1,402 results on '"integrated model"'
Search Results
2. Impact of Flooding on Pavement Performance Using Integrated Hydraulic and Mechanical Modeling
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Chen, Xiao, Wang, Hao, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Cui, Zhen-Dong, Series Editor, Lu, Xinzheng, Series Editor, Rujikiatkamjorn, Cholachat, editor, Xue, Jianfeng, editor, and Indraratna, Buddhima, editor
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- 2025
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3. Increasing the Effectiveness of Personalized Recommender Systems Based on the Integrated GNN-RL Model.
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Sharifbaev, A. N., Zainidinov, H. N., Kovalev, I. V., Kravchenko, I. N., and Kuznetsov, Yu. A.
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A modern approach to personalized recommendation systems is presented, combining graph neural networks GNN with RL reinforcement learning methods. The GNN model is optimized for recommendation systems and is trained on vector representations of users and products, which are used to generate an initial list of recommendations that are fed into the RL model. Particular attention is paid to the architecture and operation of the integrated GNN-RL model. The results of experimental studies demonstrating the effectiveness of the proposed approach are presented. [ABSTRACT FROM AUTHOR]
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- 2024
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4. An individual‐based model trained on multiple data sources estimates population connectivity and facilitates aggregation of harvest management units.
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Gonnerman, Matthew, Shea, Stephanie A., Sullivan, Kelsey, Kamath, Pauline L., and Blomberg, Erik
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WILD turkey , *ANIMAL mechanics , *WILDLIFE management , *SPRING , *FUNCTIONAL connectivity - Abstract
Management boundaries are often delimited by political and social factors, whereas animal movements are affected by ecological and geophysical constraints. Thus, understanding connectivity among distinct management units is of considerable importance, particularly for harvested species, where quotas set in ignorance of connectivity may fail to meet management goals.We constructed an individual‐based model (IBM) to better understand wild turkey movements at large scales, benefiting from multiple data sources that are often available for harvested species.We built an IBM from spring seasonal movements of wild turkey, using data from ringed, radio‐, and GPS‐marked turkeys captured in Maine, USA. Our IBM accommodated variation in individual turkey response to landscape connectivity metrics and identified emergent migratory connectivity dynamics among harvest management regions.We calculated a low degree of connectivity among wildlife management districts (WMD) which, in combination with the substantial number of boundary crossings observed, indicated a more diffuse distribution of turkeys among WMDs.Synthesis and applications: Estimates of turkeys moving between districts provided a clear delineation of where immigration was strongest, identifying which WMDs should be managed as singular population units. This approach has widespread utility for any species or system where harvest management decisions are made at finer spatial scales than the movement dynamics affecting population processes. [ABSTRACT FROM AUTHOR]
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- 2024
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5. The characterization of serum proteomics and metabolomics across the cancer trajectory in chronic hepatitis B‐related liver diseases.
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Xiao, Jin, Liu, Hang, Yao, Jun, Yang, Shuang, Shen, Fenglin, Bu, KunPeng, Wang, Zhenxin, Liu, Fan, Xia, Ningshao, Yuan, Quan, Shu, Hong, Xiong, Yueting, and Liu, Xiaohui
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Hepatocellular carcinoma (HCC) is a deadly cancer that emerges from a continuous progression of liver cells from normal to abnormal, often following infections by hepatitis B/C viruses (HBV/HCV), liver fibrosis, and liver cirrhosis (LC), ultimately culminating in cancer. However, there is currently limited systematic molecular analysis of biomarkers at different stages of HCC progression using multi‐omics approaches. We carried out an innovative pipeline by utilizing targeted proteomics and metabolomics to identify potential biomarkers for early detection of HCC in 316 participants, including healthy adults and patients diagnosed with HBV, HCV, LC, and HCC from three independent cohorts. We first established a detailed database of candidate biomarkers for HCC containing 3059 proteins and 103 metabolites, and identified pivotal candidates implicated in the progressive trajectory of liver cancers. Through our developed DeepPRM, scheduled multiple reaction monitoring (MRM)‐targeted approach, and machine learning‐based computational pipeline, we identified an eight‐biomolecular‐based combination with an accuracy rate of 91.43% for early diagnosis of HCC, and a 12‐biomolecular‐based combination with an accuracy rate of 80.00% for detecting changes in HBV–LC progression. These two biomarker combinations significantly improved accuracy compared to traditional tumor biomarkers. Our extensive analysis provides valuable proteomic and metabolomic data resources that will contribute to a deeper understanding of liver disease progression and enhance the identification of potential therapeutic targets. [ABSTRACT FROM AUTHOR]
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- 2024
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6. Evaluating the effects of wolf culling on livestock predation when considering wolf population dynamics in an individual‐based model.
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Grente, Oksana, Bauduin, Sarah, Santostasi, Nina Luisa, Chamaillé‐Jammes, Simon, Duchamp, Christophe, Drouet‐Hoguet, Nolwenn, and Gimenez, Olivier
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WOLVES , *UNIFORM spaces , *POPULATION dynamics , *SOCIAL processes , *DEMOGRAPHIC change , *PREDATION - Abstract
The efficiency of the management of predations on livestock by gray wolves (Canis lupus) through culling is under debate. Evaluating wolf culling efficiency requires to simultaneously analyze the effects of culling on the wolf population and the repercussions of these population changes on livestock predation. This protocol is technically difficult to implement in the field. To properly assess culling efficiency, we provided an integrated and flexible individual‐based model that simulated interactions between wolf population dynamics, predation behavior and culling management. We considered many social processes in wolves. We calibrated the model to match the Western Alps as a case study. By considering the prey community in this area and the opportunistic nature of wolf predation, we assumed that predation on livestock at the wolf territory level increased with pack's food needs. Under this assumption and considering livestock availability as high and livestock vulnerability as uniform in space and time, culling maintained wolf population size and predation risks at low levels. Contrary to what was expected, culling decreased the mean annual proportions of dispersing wolves in our simulations, by speeding settlement. This population‐level mechanism compensated for the high mortality and the pack instability caused by culling. Compensation was however dependent on the selectivity and the timing of culling. When executed before the natural mortality module in our model, the selective culling could undermine replacement of lost breeders and therefore decrease wolf population resilience to culling. Our model gives insights about culling effects in one specific simulated context, but we do not expect that our assumption about predation behavior necessarily holds in other ecological contexts and we therefore encourage further explorations of the model. [ABSTRACT FROM AUTHOR]
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- 2024
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7. Integrated model between Three Pillars of Institutions and Mair Noboa model to determine social entrepreneurial intention.
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Iqbal, Mehree, Geneste, Louis, and Weber, Paull
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Purpose: This study aims to expand antecedent roles on social entrepreneurial behavioural intention by integrating both the Three Pillars of Institutions and the Mair Noboa model. The literature lacks in investigating both institutional- and individual-level antecedents to determine social entrepreneurial behavioural intention. This proposed integrated model was developed in which the Mair Noboa's model antecedents mediates the positive relationship between the antecedents of Three Pillars of Institutions and social entrepreneurial intention. Design/methodology/approach: This study uses quantitative research methodologies to answer the research question of the extent that institutional-level antecedents in turn influence individual antecedents and thus determine social entrepreneurial intention. To explore this, a Web-based survey distributed across Bangladesh (n = 412). The confirmation of hypotheses involved using covariance-based structural equation modelling (SEM) for data analysis. The resulting measurement and structural models successfully met all criteria for reliability, model fit, convergent validity and discriminant validity. The hypotheses were subsequently assessed by examining both direct relationships and mediating effects. Findings: The findings demonstrated a significant relationship between the antecedents of the Three Pillars of Institutions and the Mair Noboa model. The results suggest that the Mair Noboa model antecedents can mediate the relationship between the Three Pillars of Institutions and social entrepreneurial intention. Originality/value: This paper advances the existing knowledge of social entrepreneurial intention, through the novel lens of combined institutional and individual antecedents. This paper fills an important knowledge gap by exploring both institutional- and individual-level antecedents to determine social entrepreneurial intention. This study findings yield fresh theoretical and practical insights into how institutional and individual antecedents jointly influence social entrepreneurial intention. [ABSTRACT FROM AUTHOR]
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- 2024
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8. Socio-Cultural Aspects of Diabetic Foot: An Ethnographic Study and an Integrated Model Proposal.
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Costa, Davide, Gallelli, Giuseppe, Scalise, Enrica, Ielapi, Nicola, Bracale, Umberto Marcello, and Serra, Raffaele
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DIABETIC foot ,PEOPLE with diabetes ,TRADITIONAL medicine ,DIABETES ,ECOLOGICAL houses ,ETHNOLOGY - Abstract
Background: Diabetes mellitus (DM) is an ongoing and growing health problem worldwide, with a series of important complications such as diabetic foot that can significatively reduce the quality of life of affected patients. This study aims to explore the socio-cultural aspects of patients with diabetic foot, analyzing the following research question: "What are the socio-cultural aspects experienced by patients with diabetic foot?" Methods: A qualitative design using an ethnographic approach was applied to study the social and cultural aspects of Italian diabetic foot patients. Results: We included 20 key informants: 13 men and 7 women. Ages ranged from 54 to 71, with an average age of 61.2. The data analysis revealed five main themes: perceptions of diabetic foot, living with diabetic foot, impacts of culture and economic performance, barriers to health and diabetic foot, and home remedies and alternative medicine. Conclusions: This study provides a new perspective on the influence of cultural factors on the health of diabetic foot patients, showing various factors related to a lack of knowledge and training, fear, and acceptance of diabetic foot. This study also presents a new integrated model which will allow patients and practitioners to act on the various critical issues that emerged from our research. [ABSTRACT FROM AUTHOR]
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- 2024
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9. An Integrated Fuzzy Delphi and Fuzzy AHP Model for Evaluating Factors Affecting Human Errors in Manual Assembly Processes.
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Alqahtani, Fahad M. and Noman, Mohammed A.
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ANALYTIC hierarchy process ,HUMAN error ,DELPHI method ,MANUFACTURING defects ,MULTIPLE criteria decision making - Abstract
Human errors (HEs) are prevalent issues in manual assembly, leading to product defects and increased costs. Understanding and knowing the factors influencing human errors in manual assembly processes is essential for improving product quality and efficiency. This study aims to determine and rank factors influencing HEs in manual assembly processes based on expert judgments. To achieve this objective, an integrated model was developed using two multi-criteria decision-making (MCDM) techniques—specifically, the fuzzy Delphi Method (FDM) and the fuzzy Analytic Hierarchy Process (FAHP). Firstly, two rounds of the FDM were conducted to identify and categorize the primary factors contributing to HEs in manual assembly. Expert consensus with at least 75% agreement determined that 27 factors with influence scores of 0.7 or higher significantly impact HEs in these processes. After that, the priorities of the 27 influencing factors in assembly HEs were determined using a third round of the FAHP method. Data analysis was performed using SPSS 22.0 to evaluate the reliability and normality of the survey responses. This study has divided the affecting factors on assembly HEs into two levels: level 1, called main factors, and level 2, called sub-factors. Based on the final measured weights for level 1, the proposed model estimation results revealed that the most influential factors on HEs in a manual assembly are the individual factor, followed by the tool factor and the task factor. For level 2, the model results showed a lack of experience, poor instructions and procedures, and misunderstanding as the most critical factors influencing manual assembly errors. Sensitivity analysis was performed to determine how changes in model inputs or parameters affect final decisions to ensure reliable and practical results. The findings of this study provide valuable insights to help organizations develop effective strategies for reducing worker errors in manual assembly. Identifying the key and root factors contributing to assembly errors, this research offers a solid foundation for enhancing the overall quality of final products. [ABSTRACT FROM AUTHOR]
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- 2024
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10. Enhancing the differential diagnosis of small pulmonary nodules: a comprehensive model integrating plasma methylation, protein biomarkers, and LDCT imaging features.
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Yang, Meng, Yu, Huansha, Feng, Hongxiang, Duan, Jianghui, Wang, Kaige, Tong, Bing, Zhang, Yunzhi, Li, Wei, Wang, Ye, Liang, Chaoyang, Sun, Hongliang, Zhong, Dingrong, Wang, Bei, Chen, Huang, Gong, Chengxiang, He, Qiye, Su, Zhixi, Liu, Rui, and Zhang, Peng
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DNA methylation , *CELL-free DNA , *COMPUTED tomography , *PULMONARY nodules , *INDEPENDENT sets , *PROTEIN models - Abstract
Background: Accurate differentiation between malignant and benign pulmonary nodules, especially those measuring 5–10 mm in diameter, continues to pose a significant diagnostic challenge. This study introduces a novel, precise approach by integrating circulating cell-free DNA (cfDNA) methylation patterns, protein profiling, and computed tomography (CT) imaging features to enhance the classification of pulmonary nodules. Methods: Blood samples were collected from 419 participants diagnosed with pulmonary nodules ranging from 5 to 30 mm in size, before any disease-altering procedures such as treatment or surgical intervention. High-throughput bisulfite sequencing was used to conduct DNA methylation profiling, while protein profiling was performed utilizing the Olink proximity extension assay. The dataset was divided into a training set and an independent test set. The training set included 162 matched cases of benign and malignant nodules, balanced for sex and age. In contrast, the test set consisted of 46 benign and 49 malignant nodules. By effectively integrating both molecular (DNA methylation and protein profiling) and CT imaging parameters, a sophisticated deep learning-based classifier was developed to accurately distinguish between benign and malignant pulmonary nodules. Results: Our results demonstrate that the integrated model is both accurate and robust in distinguishing between benign and malignant pulmonary nodules. It achieved an AUC score 0.925 (sensitivity = 83.7%, specificity = 82.6%) in classifying test set. The performance of the integrated model was significantly higher than that of individual methylation (AUC = 0.799, P = 0.004), protein (AUC = 0.846, P = 0.009), and imaging models (AUC = 0.866, P = 0.01). Importantly, the integrated model achieved a higher AUC of 0.951 (sensitivity = 83.9%, specificity = 89.7%) in 5–10 mm small nodules. These results collectively confirm the accuracy and robustness of our model in detecting malignant nodules from benign ones. Conclusions: Our study presents a promising noninvasive approach to distinguish the malignancy of pulmonary nodules using multiple molecular and imaging features, which has the potential to assist in clinical decision-making. Trial registration: This study was registered on ClinicalTrials.gov on 01/01/2020 (NCT05432128). https://classic.clinicaltrials.gov/ct2/show/NCT05432128. [ABSTRACT FROM AUTHOR]
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- 2024
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11. Factors Impacting Consumers' Purchase Intention of Electric Vehicles in China: Based on the Integration of Theory of Planned Behaviour and Norm Activation Model.
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Ji, Zhongyang, Jiang, Hao, and Zhu, Jingyi
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Understanding the factors that drive consumers to purchase electric vehicles (EVs) is critical to achieving decarbonization of China's transportation sector, as well as mitigating global warming. This study aims to construct a research model based on altruistic and self-interested perspectives by integrating the Theory of Planned Behaviour (TPB) and Norm Activation Model (NAM) to predict the psychological factors that influence Chinese consumers' intention to purchase EVs. Data were collected from 867 participants in China and empirically tested using Structural Equation Modeling (SEM). Self-interested factors, namely subjective norms, attitudes and perceived behavioural control, all had a significant positive effect on EV purchase intention. Additionally, the results showed that personal norms had the greatest effect on EV purchase intention. It was also found that awareness of consequence, ascription of responsibility and subjective norms were positive predictors of personal norms. Awareness of consequence had a positive effect on both the ascription of responsibility and attitudes. The findings contribute to understanding the psychological drivers of Chinese consumers' intention to purchase EVs and can provide decision-making references for policy makers and manufacturers. [ABSTRACT FROM AUTHOR]
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- 2024
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12. Determinants of consuming functional fermented foods: An integrated structural model approach.
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Vahabzadeh, Mansoureh, Esfandiar, Kourosh, and Pourazad, Naser
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PROTECTION motivation theory , *FERMENTED foods , *FLOW theory (Psychology) , *PLANNED behavior theory , *STRUCTURAL equation modeling - Abstract
AbstractFunctional fermented foods are increasingly recognized for their positive impact on human health, and this study aims to identify the factors that influence these products’ consumption in Iran. The study uses structural equation modeling (SEM) to test the conceptual model incorporating the theory of planned behavior (TPB), protection motivation theory (PMT), and flow theory (FT). Data from 319 individuals having prior experience with such foods were analyzed to test the hypothesized relationships. Based on the results, the integrated model components demonstrated a strong predictive power, explaining 70.6% of the variance in functional fermented food consumption. The study found that perceived vulnerability, perceived severity, and response cost from the PMT were the main drivers of functional fermented food consumption among Iranians. The study also offers practical insights, including highlighting health benefits, promoting pleasurable aspects, and mitigating accessibility challenges to these foods for Iranian consumers. [ABSTRACT FROM AUTHOR]
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- 2024
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13. Holistic Approach to Adult Patient Care: Integrated Psychology Pilot for Acute Care.
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de la Osa, Catherine M., Gonzalez-Alpizar, Lisa C., and Jimenez Hamann, Maria C.
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HOLISTIC medicine , *SCALE analysis (Psychology) , *MENTAL health services , *MEDICAL quality control , *PSYCHOLOGICAL burnout , *INTERPROFESSIONAL relations , *T-test (Statistics) , *PILOT projects , *PATIENT care , *DESCRIPTIVE statistics , *MANN Whitney U Test , *JOB satisfaction , *ATTITUDES of medical personnel , *QUALITY assurance , *HEALTH outcome assessment , *LENGTH of stay in hospitals , *DATA analysis software , *CONFIDENCE intervals , *INTEGRATED health care delivery , *BIOPSYCHOSOCIAL model , *CRITICAL care medicine , *MEDICAL referrals , *HEALTH care teams - Abstract
We report on a quality improvement initiative to facilitate biopsychosocial approaches for medical patients in an acute hospital setting through a hybrid integrated psychology care model. The expectation was to improve patient outcomes by increasing provider satisfaction and reducing average length of stay (ALOS). Psychologists in the adult consultation–liaison (CL) service were embedded with two service lines: hematology–oncology and medical trauma teams to comanage medical patients in their daily care through an interdisciplinary integrated approach. After 6 months, we compared differences in the ALOS between the traditional CL and hybrid integrated models. Satisfaction with the psychology services among providers was evident with 97% noting that integrated psychologists would reduce their own burnout. ALOS for patients evaluated by psychologists in the CL service was not statistically significantly different from the hybrid integrated model (CL service ALOS = 28 days vs. hybrid integrated pilot model ALOS = 20 days, p =.603). Earlier psychology evaluations (i.e., conducted within 5 days of admission) resulted in statistically significantly lower LOS in both models (p ≤.002). An integrated approach to patient care showed the potential to reduce LOS especially when psychological evaluation occurred within 5 days of admission. Additionally, the integrated model resulted in improved staff satisfaction. This collaboration can be of significant clinical and potential monetary value for the medical field as a whole. Public Significance Statement: This study advances the notion that integrating a psychologist within a medical team in an acute care medical setting can improve overall hospital outcomes for both patients and physicians. Additionally, it highlights how to maximize efficiencies of health care services being utilized, which has significant clinical and potential monetary value for the medical field. Hence, this approach aligns with the quadruple aim of health care. [ABSTRACT FROM AUTHOR]
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- 2024
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14. Factors Influencing the Perceived Employability among University Students.
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Zou Longxiang, Appalanaidu, Sathish Rao, and Nachiappan, Suppiah
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COLLEGE students ,EMPLOYABILITY ,LABOR market ,CAREER development ,UNIVERSITIES & colleges - Abstract
The global economic turmoil and the employability gap among university students have created a challenging job market for graduates. It is crucial to understand the factors that shape students' perceived employability and to implement effective measures to address this serious issue. A literature review was conducted to provide a comprehensive understanding of the factors influencing perceived employability among university students, focusing on research findings published since 2021. The present study indicates that numerous factors, including individual, behavioural, and environmental variables, significantly influence perceived employability among university students. Besides, previous research has diverged on specific factors such as demographics, partial components of personality traits, career engagement, political skills, and labour market situation, which need to be further investigated in the future. Furthermore, this study underscores the crucial significance of perceived employability among university students in a challenging job market. It validates the relevance of Career Construction Theory in interpreting perceived employability among university students and improves researchers' understanding of how perceived employability has evolved before and after the pandemic. Most importantly, this study develops an integrated model of the factors influencing the perceived employability among university students, which can serve as a guide for future researchers to study university students' employment issues and navigate the career practices of stakeholders such as the Ministry of Education, universities, university students, employers, and career practitioners. [ABSTRACT FROM AUTHOR]
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- 2024
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15. Enhancing the differential diagnosis of small pulmonary nodules: a comprehensive model integrating plasma methylation, protein biomarkers, and LDCT imaging features
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Meng Yang, Huansha Yu, Hongxiang Feng, Jianghui Duan, Kaige Wang, Bing Tong, Yunzhi Zhang, Wei Li, Ye Wang, Chaoyang Liang, Hongliang Sun, Dingrong Zhong, Bei Wang, Huang Chen, Chengxiang Gong, Qiye He, Zhixi Su, Rui Liu, and Peng Zhang
- Subjects
Pulmonary nodules classification ,Cell-free DNA methylation ,Protein profiling ,Imaging ,Integrated model ,Medicine - Abstract
Abstract Background Accurate differentiation between malignant and benign pulmonary nodules, especially those measuring 5–10 mm in diameter, continues to pose a significant diagnostic challenge. This study introduces a novel, precise approach by integrating circulating cell-free DNA (cfDNA) methylation patterns, protein profiling, and computed tomography (CT) imaging features to enhance the classification of pulmonary nodules. Methods Blood samples were collected from 419 participants diagnosed with pulmonary nodules ranging from 5 to 30 mm in size, before any disease-altering procedures such as treatment or surgical intervention. High-throughput bisulfite sequencing was used to conduct DNA methylation profiling, while protein profiling was performed utilizing the Olink proximity extension assay. The dataset was divided into a training set and an independent test set. The training set included 162 matched cases of benign and malignant nodules, balanced for sex and age. In contrast, the test set consisted of 46 benign and 49 malignant nodules. By effectively integrating both molecular (DNA methylation and protein profiling) and CT imaging parameters, a sophisticated deep learning-based classifier was developed to accurately distinguish between benign and malignant pulmonary nodules. Results Our results demonstrate that the integrated model is both accurate and robust in distinguishing between benign and malignant pulmonary nodules. It achieved an AUC score 0.925 (sensitivity = 83.7%, specificity = 82.6%) in classifying test set. The performance of the integrated model was significantly higher than that of individual methylation (AUC = 0.799, P = 0.004), protein (AUC = 0.846, P = 0.009), and imaging models (AUC = 0.866, P = 0.01). Importantly, the integrated model achieved a higher AUC of 0.951 (sensitivity = 83.9%, specificity = 89.7%) in 5–10 mm small nodules. These results collectively confirm the accuracy and robustness of our model in detecting malignant nodules from benign ones. Conclusions Our study presents a promising noninvasive approach to distinguish the malignancy of pulmonary nodules using multiple molecular and imaging features, which has the potential to assist in clinical decision-making. Trial registration: This study was registered on ClinicalTrials.gov on 01/01/2020 (NCT05432128). https://classic.clinicaltrials.gov/ct2/show/NCT05432128 .
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- 2024
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16. Research progress on intelligent control and decision-making models for the ladle furnace refining process
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Huan WANG, Min WANG, Qing LIU, Lidong XING, and Yanping BAO
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lf refining ,control and decision ,automation ,integrated model ,intelligent refining ,Mining engineering. Metallurgy ,TN1-997 ,Environmental engineering ,TA170-171 - Abstract
Ladle furnace (LF) refining can effectively control the composition and temperature of molten steel and plays a role in cushioning and coordinating the production rhythm between steelmaking and continuous casting. The use of models for control and decision-making in LF refining can further standardize the refining operations, improve the quality and stability of molten steel, and, combined with automatic control, will strongly promote the development of intelligent refining to achieve optimization of steelmaking and improve efficiency. Regarding promoting intelligent manufacturing in the steel industry, the LF refining process model is no longer limited to the establishment and deployment of single-function models and has begun to develop in the direction of integration, automation, and intelligence while its function has also changed from a single prediction and recommendation to overall intelligent control and decision-making. LF process control and decision models are mostly single-function models, but few integrate applications. Due to the complexity and uncertainty of the refining process, these models have differences in stability and accuracy. Therefore, establishing an integrated model, standardizing the field process, improving the data quality, and combining automatic control and closed-loop feedback to further realize the intelligent control model have become important directions for future research and application of LF control models. Herein, the development and research status of LF refining control and decision models are summarized, including the alloying model, slagging model, temperature model, argon blowing control model, calcium treatment model, and other single-function models, as well as intelligent refining technology. The modeling principles and functions of these models are systematically reviewed, and future development directions of LF process intelligent control and decision models are prospected, providing a reference for the subsequent development and application of LF intelligent refining technology. The establishment and real landing of LF intelligent control and decision models not only require the realization and linkage of process control and decision models but also propose higher requirements for iron and steel enterprises. The realization of LF intelligent control and decision-making models can greatly improve the consistency and qualified rate of product quality, reduce energy consumption and cost, reduce manual intervention, and shorten the smelting cycle, thus improving the competitiveness of enterprises. With the continuous upgrading and improvement of model design, automation technology, and steel mill site environment, the application and development of LF intelligent control and decision-making models show great potential in realizing green, low-carbon, and intelligent manufacturing and would make great contributions to the progress and transformation and upgrading of the steel industry in the future.
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- 2024
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17. Research on optimization of mining methods for broken ore bodies based on interval-valued pythagorean fuzzy sets and TOPSIS-GRA
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Junxi Wu, Guoyan Zhao, Ning Wang, Yihang Xu, and Meng Wang
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Mining method optimization ,Interval-valued Pythagorean fuzzy sets ,Integrated model ,Broken and difficult-to-mine ore body ,Point-pillar upward horizontal layered filling mining method ,Medicine ,Science - Abstract
Abstract Identifying the optimal mining methods plays a pivotal role in ensuring both economic efficiency and environmental sustainability. This study aims to propose a model that combines interval-valued Pythagorean fuzzy sets (IVPFS) and TOPSIS-GRA to select the optimal mining method for broken ore bodies. First, a multi-factor comprehensive evaluation system, including economic, safety, and technical aspects, was established. IVPFS was introduced to express the fuzzy information of the decision-making process within the evaluation system. Additionally, an objective method combining the principle of fuzzy entropy measurement with EWM was proposed to determine the weights of fuzzy information. This method distinguished the importance of decision-makers and indicators. Then, an integration of distance and similarity (TOPSIS-GRA) was employed for ranking alternative solutions to select the optimal one. This model was applied to the decision-making problem of mining methods for the broken and difficult-to-mine ore bodies in the Tanyaokou mining area. Initial fuzzy evaluation information was obtained by having decision-makers score the mining methods. Results showed that the comprehensive scores of four alternatives are 0.5172, 0.4683, 0.5192, and 0.5465, respectively. The optimal method was the point-pillar upward horizontal layered filling mining method. Finally, the sensitivity analysis confirmed the stability of the model. The comparative results under different fuzzy environments (PFS and TFS) demonstrated the strong capability of IVPFS in handling fuzzy information for optimizing mining methods.
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- 2024
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18. A Novel Method for Identifying Landslide Surface Deformation via the Integrated YOLOX and Mask R-CNN Model
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Chenghui Wan, Jianjun Gan, Anbang Chen, Prabin Acharya, Fenghui Li, Wenjie Yu, and Fangzhou Liu
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Landslide deformation ,Deep learning ,Integrated model ,Target detection ,Semantic segmentation ,Electronic computers. Computer science ,QA75.5-76.95 - Abstract
Abstract The detection of landslide areas and surface characteristics is the prerequisite and basis of landslide hazard risk assessment. The traditional method relies mainly on manual field identification, and discrimination is based on the lack of unified quantitative standards. Thus, the use of neural networks for the quantitative identification and prediction of landslide surface deformation is explored. By constructing an integrated model based on YOLO X-CNN and Mask R-CNN, a deep learning-based feature detection method for landslide surface images is proposed. First, the method superimposes Unmanned Aerial Vehicle (UAV) oblique photography data (UOPD) and Internet heterosource image data (IHID) to construct a landslide surface image dataset and landslide surface deformation database. Second, an integrated model suitable for small- and medium-scale target detection and large-scale target edge extraction is constructed to automatically identify and extract landslide surface features and to achieve rapid detection of landslide surface features and accurate segmentation and deformation recognition of landslide areas. The results show that the detection accuracy for small rock targets is greater than 80% and that the speed is 57.04 FPS. The classification and mask segmentation accuracies of large slope targets are approximately 90%. A speed of 7.89 FPS can meet the needs of disaster emergency response; this provides a reference method for the accurate identification of landslide surface features.
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- 2024
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19. Formation of a Model of Sustainable Development of the Pipe Industry
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A. N. Kutieva and A. V. Glotko
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pipe industry ,pipe products ,sustainable development ,economic growth ,integrated model ,Competition ,HD41 ,Finance ,HG1-9999 - Abstract
Relevance: the article analyzes an alternative view of the model of sustainable development of the pipe industry. A comparative description of the classical and author’s models is given. The following methods were used in the work: analysis of reliable sources, up-to-date data, as well as calculations of an integrated model of sustainable development using the example of the Chelyabinsk Pipe Rolling Plant. The scientific novelty of the research consists in the fact that the author’s model of sustainable development of the pipe industry is proposed, justifi ed, and substantiated on the basis of the interaction of the main areas of sustainability (on the example of the Russian Federation and the European Union). The results and conclusions of the article can be useful for the scientifi c community and pipe industry enterprises in the development of strategic economic development programs.
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- 2024
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20. Integrated modeling of urban mobility, flood inundation, and sewer hydrodynamics processes to support resilience assessment of urban drainage systems
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Luyao Wang, Ruyi Li, and Xin Dong
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flood ,integrated model ,resilience ,urban drainage system ,urban mobility ,Environmental technology. Sanitary engineering ,TD1-1066 - Abstract
With the increasing frequency of extreme weather events and a deepening understanding of disasters, resilience has received widespread attention in urban drainage systems. The studies on the resilience assessment of urban drainage systems are mostly indirect assessments that did not simulate human behavior affected by rainfall or semi-quantitative assessments that did not build simulation models, but few research characterizes the processes between people and infrastructure to assess resilience directly. Our study developed a dynamic model that integrates urban mobility, flood inundation, and sewer hydrodynamics processes. The model can simulate the impact of rainfall on people's mobility behavior and the full process including runoff generation, runoff entering pipes, node overflow, flood migration, urban mobility, and residential water usage. Then, we assessed the resilience of the urban drainage system under rainfall events from the perspectives of property loss and urban mobility. The study found that the average percentage increase in commuting time under different return periods of rainfall ranged from 6.4 to 203.9%. Calculating the annual expectation of property loss and traffic obstruction, the study found that the annual expectation loss in urban mobility is 9.1% of the annual expectation of property loss if the rainfall is near the morning commuting peak. HIGHLIGHTS Assessed the resilience of the drainage system from the perspectives of property and urban.; Developed a model that integrates urban mobility, flood inundation, and sewer hydrodynamics processes.; The average percentage increase in commuting time ranged from 6.4 to 203.9%.; The annual expectation loss in urban mobility is 9.1% of the annual expectation of property loss if the rainfall is near the morning commuting peak.;
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- 2024
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21. Analysis of Short-Term Heavy Rainfall-Based Urban Flood Disaster Risk Assessment Using Integrated Learning Approach.
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Wu, Xinyue, Zhu, Hong, Hu, Liuru, Meng, Jian, and Sun, Fulu
- Abstract
Accurate and timely risk assessment of short-term rainstorm-type flood disasters is very important for ecological environment protection and sustainable socio-economic development. Given the complexity and variability of different geographical environments and climate conditions, a single machine learning model may lead to overfitting issues in flood disaster assessment, limiting the generalization ability of such models. In order to overcome this challenge, this study proposed a short-term rainstorm flood disaster risk assessment framework under the integrated learning model, which is divided into two stages: The first stage uses microwave remote sensing images to extract flood coverage and establish disaster samples, and integrates multi-source heterogeneous data to build a flood disaster risk assessment index system. The second stage, under the constraints of Whale Optimization Algorithm (WOA), optimizes the integration of random forest (RF), support vector machine (SVM), and logistic regression (LR) base models, and then the WRSL-Short-Term Flood Risk Assessment Model is established. The experimental results show that the Area Under Curve (AUC) accuracy of the WRSL-Short-Term Flood Risk Assessment Model is 89.27%, which is 0.95%, 1.77%, 2.07%, 1.86%, and 0.47% higher than RF, SVM, LR, XGBoost, and average weight RF-SVM-LR, respectively. The accuracy evaluation metrics for accuracy, Recall, and F1 Score have improved by 5.84%, 21.50%, and 11.06%, respectively. In this paper, WRSL-Short-Term Flood Risk Assessment Model is used to carry out the risk assessment of flood and waterlogging disasters in Henan Province, and ArcGIS is used to complete the short-term rainstorm city flood and waterlogging risk map. The research results will provide a scientific assessment basis for short-term rainstorm city flood disaster risk assessment and provide technical support for regional flood control and risk management. [ABSTRACT FROM AUTHOR]
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- 2024
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22. Factors affecting the intention to wear helmets for e-bike riders: the case of Chinese college students.
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Yang, Ying, Li, Chun, Cheng, Kun, and Hu, Sangen
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- *
HEALTH Belief Model , *PLANNED behavior theory , *CHINESE-speaking students , *ELECTRIC bicycles , *SOCIAL norms - Abstract
As the popularity of electric bicycles (e-bikes) continues to surge, the number of accidents involving them has commensurately increased. A significant factor contributing to the high fatality rate in these accidents is the low usage of helmets among e-bike riders. Helmets have been proven to reduce the severity of injuries, yet their usage remains unexpectedly low. This issue is particularly pronounced among college students, the primary buyer group for e-bikes. Regrettably, there is a lack of research exploring their intentions to wear helmets. Understanding determinants of their intentions to wear helmets is crucial in promoting safe e-bike travel. Therefore, the present study aims to develop an integrated theoretical model that combines the Theory of Planned Behavior (TPB) and the Health Belief Model (HBM) to examine the factors influencing e-bike riders' helmet-wearing intentions among college students. Additionally, two variables—descriptive norms and law enforcement—are incorporated. The results indicate that the integrated model accounts for 76% of the variance in helmet-wearing intention, surpassing single-theory models. Specifically, the TPB accounts for 65%, while the HBM explains 53%. Notably, law enforcement emerges as the most influential factor, highlighting the crucial role of enforcing regulations and promoting awareness. Other significant factors include subjective and descriptive norms, attitudes, perceived benefits, perceived susceptibility, perceived barriers, and perceived severity. These findings provide valuable insights for policy development and targeted interventions aimed at improving helmet wear rates among e-bike riders, especially among the college student population. [ABSTRACT FROM AUTHOR]
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- 2024
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23. Investigation of integrated model for optimizing the performance of urban wastewater system.
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Bashara, Ahmed Naeemah and Qaderi, Farhad
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- *
WASTEWATER treatment , *ECONOMIC development , *WATER supply , *SUSTAINABILITY , *MATHEMATICAL models - Abstract
Due to the rapid population and economic growth, the demand for water has increased. In addition, the natural resources are limited and degrade because of several factors such as the climate change. These challenges lead to reduce the ability of providing water at the required quantity and quality. One of solutions to maintain the sustainability of water supply from different sources is reuse of wastewater. For this aim, it is crucial to optimize wastewater systems. This research paper aims to describe different modelling possibilities and optimization methods for various components of integrated urban wastewater systems. The main conclusion of this research paper is the lack of study of optimum design and operation of urban wastewater systems in a holistic method. Moreover, most of previous studies on integrated wastewater management have been conducted on combined sewer systems. [ABSTRACT FROM AUTHOR]
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- 2024
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24. Economic Feasibility of LNG Business: An Integrated Model and Case Study Analysis.
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Zhang, Jin, Yin, Xiuling, Lei, Zhanxiang, Wang, Jianjun, Fan, Zifei, and Liu, Shenaoyi
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- *
NATURAL gas , *LIQUEFIED natural gas , *BUSINESS models , *GAS industry , *VALUE chains , *STRATEGIC planning , *CARBON emissions - Abstract
Liquefied natural gas (LNG), recognized as the fossil fuel with the lowest carbon emission intensity, is a crucial transitional energy source in the global shift towards low-carbon energy. As the natural gas industry undergoes rapid expansion, the complexity of investment business models has increased significantly. Optimizing the combination of various segments within the value chain has become standard practice, making it essential to control risks and enhance economic benefits in these multifaceted scenarios. This paper introduces an integrated economic model encompassing upstream, liquefaction, shipping, regasification, and consumption, suitable for both upstream and downstream integration. The model offers a comprehensive analysis of the primary business models and key factors across each segment of the value chain. By constructing a robust economic evaluation framework, the study aims to provide a holistic approach to understanding the economic feasibility of LNG projects. Two detailed case studies are conducted to demonstrate the application and effectiveness of the proposed model, highlighting its capability to guide investment decisions, support risk management, and optimize asset portfolios. The integrated economic model developed in this study serves as a valuable tool for stakeholders in the LNG industry. It not only facilitates informed investment decision-making but also enhances the strategic management of risks and resources. By leveraging this model, investors and managers can better navigate the complexities of the LNG business, ensuring sustainable and economically viable operations. [ABSTRACT FROM AUTHOR]
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- 2024
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25. The characterization of serum proteomics and metabolomics across the cancer trajectory in chronic hepatitis B‐related liver diseases
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Jin Xiao, Hang Liu, Jun Yao, Shuang Yang, Fenglin Shen, KunPeng Bu, Zhenxin Wang, Fan Liu, Ningshao Xia, Quan Yuan, Hong Shu, Yueting Xiong, and Xiaohui Liu
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biomarker discovery ,hepatocellular carcinoma ,integrated model ,metabolomics ,proteomics ,serum ,Biotechnology ,TP248.13-248.65 ,Medical technology ,R855-855.5 - Abstract
Abstract Hepatocellular carcinoma (HCC) is a deadly cancer that emerges from a continuous progression of liver cells from normal to abnormal, often following infections by hepatitis B/C viruses (HBV/HCV), liver fibrosis, and liver cirrhosis (LC), ultimately culminating in cancer. However, there is currently limited systematic molecular analysis of biomarkers at different stages of HCC progression using multi‐omics approaches. We carried out an innovative pipeline by utilizing targeted proteomics and metabolomics to identify potential biomarkers for early detection of HCC in 316 participants, including healthy adults and patients diagnosed with HBV, HCV, LC, and HCC from three independent cohorts. We first established a detailed database of candidate biomarkers for HCC containing 3059 proteins and 103 metabolites, and identified pivotal candidates implicated in the progressive trajectory of liver cancers. Through our developed DeepPRM, scheduled multiple reaction monitoring (MRM)‐targeted approach, and machine learning‐based computational pipeline, we identified an eight‐biomolecular‐based combination with an accuracy rate of 91.43% for early diagnosis of HCC, and a 12‐biomolecular‐based combination with an accuracy rate of 80.00% for detecting changes in HBV–LC progression. These two biomarker combinations significantly improved accuracy compared to traditional tumor biomarkers. Our extensive analysis provides valuable proteomic and metabolomic data resources that will contribute to a deeper understanding of liver disease progression and enhance the identification of potential therapeutic targets.
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- 2024
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26. Flood resilience assessment of region based on TOPSIS-BOA-RF integrated model
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Guofeng Wen and Fayan Ji
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Region ,Flood resilience ,Integrated model ,TOPSIS-BOA-RF ,Ecology ,QH540-549.5 - Abstract
Global climate change and rapid urbanization have increased the risk of flood disasters in regions. Flood resilience assessment is the foundation for building regional resilience. Addressing issues of efficiency and accuracy in high-dimensional, small-sample context found in existing assessment models, this study proposes a regional flood resilience assessment integrated model. Firstly, an indicator system is established through the process of “data collection-indicator extraction -opinion solicitation-indicator confirmation”, focusing on dimensions of robustness, redundancy, resourcefulness, and rapidity. Secondly, the combined indicator weights are determined using quadratic programming combined with the EWM-Delphi method. Finally, based on the obtained weights, learning samples are generated using piecewise linear interpolation and the TOPSIS. Training samples are then input into the Butterfly Optimization Algorithm(BOA) to optimize the key parameters in the Random Forest(RF). The performance of optimized RF is evaluated using test samples. Therefore, the TOPSIS-BOA-RF integrated model is constructed. Taking the Shandong Peninsula Urban Agglomeration as an example, the integrated model is used to analyze the flood resilience in 16 cities under the jurisdiction of the region from 2003 to 2022. The results indicate that as of 2022, Jinan, Qingdao, and Zibo have reached a high resilience, while Yantai, Weihai, Weifang, Rizhao, Dongying, and Binzhou are rated higher. In contrast, Zaozhuang, Taian, Dezhou, Jining, Linyi, Liaocheng, and Heze exhibit moderate resilience, which is lower than that of other cities. From 2003 to 2022, the Shandong Peninsula Urban Agglomeration has significantly improved in flood resilience, showing a decreasing trend from northeast to southwest. Comparative analysis shows that results of the constructed model are consistent with reality and perform better than other models. Suggestions for enhancing regional resilience, such as construction of regional rescue centers and improvement of economic circle resilience, are proposed.
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- 2024
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27. Attention-based integrated deep neural network architecture for predicting the effectiveness of data center power usage
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Yang-Cheng Shih, Sathesh Tamilarasan, Chin-Sheng Chen, Omid Ali Zargar, and Yean-Der Kuan
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Data center ,Power usage effectiveness ,Convolutional long short-term memory ,Deep neural network ,Integrated model ,Attention mechanism ,Heat ,QC251-338.5 - Abstract
Addressing the critical need for enhanced power usage effectiveness in data centers (DCs), this study pioneers an improved convolutional long short-term memory with deep neural network (CLDNN) model, enriched with attention mechanisms for precise DC performance prediction. We rigorously evaluate our model against leading architectures – long short-term memory (LSTM), attention-based (att-LSTM), convolutional LSTM (CNN-LSTM), gated recurrent unit (GRU), and CNN-GRU – to affirm its superiority in predictive accuracy and robustness. The integration of convolutional layers processes hourly data inputs efficiently, reducing complexity and improving pattern detection. A subsequent flattening layer optimizes accuracy, while a dual-layered LSTM and a deep neural network delve into frequency, temporal dynamics, and complex data relationships. Incorporating an attention mechanism into the att-CLDNN model has revolutionized predictive analytics in DC energy management, significantly enhancing accuracy by highlighting crucial data interdependencies. This model's unparalleled precision, evidenced by achieving the lowest Mean Squared Error (MSE) of 0.000179, the minimum Mean Absolute Error (MAE) of 0.01048, and the highest R2 Score of 0.977031, underscores its effectiveness. Crucially, this breakthrough fosters sustainability in energy management, promoting greener DC operations through precise energy use predictions, leading to substantial energy savings and reduced carbon emissions, in alignment with global sustainability objectives.
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- 2024
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28. The optimum condition for electric vehicles’ battery powering factors to travel distance: A model-based approach
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MD Shouquat Hossain, Audrius Senulis, Laura Saltyte-Vaisiauske, and Mohammad Jakir Hossain Khan
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Electric vehicles ,Batteries ,Integrated model ,Modeling and validation ,Power sources performance ,Science (General) ,Q1-390 ,Social sciences (General) ,H1-99 - Abstract
The development of electric vehicles (EVs) and their power source systems (PSS) is a rapidly growing field of technology. However, the EV's travel distance (range between charging stations) depends on the agility of the PSS, or battery capacity system. EV driving range and battery capacity are the two most significant technical challenges in commercializing EVs. This study aims to propose an integrated model that identifies the optimal energy factor orientation, enabling EVs to cover the maximum travel distance and reach the charging station for their next trip. Additionally, the artificial intelligence (AI) and statistical models were integrated and applied to predict, validate, and explain how energy factors affect the driving range of EVs. The developed models and validations revealed that maintaining precise assimilation of battery power factors can vary the EV's travel distance from 60 to 610 km. In this case, we have identified 77.5 kWh battery capacity and 14.5 kW charging capacity as the optimum power source factors. After 5.5 h of charging, various adjustments to power source factors allow for optimum battery performance. We have also proposed the central composite factorial design (CCFD) to compute the impact of energy factors on travel distance. The study used the response surface methodology (RSM) and an in-house-developed AI-based algorithm to achieve the research results. The alignment percentage between model-predicted data and real-time outputs showed an extremely high precision of over 95 % and confidence in the findings' reliability.
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- 2024
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29. An empirical evidence on the impact of social customer relationship management on the small and medium enterprises performance
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Fathey Mohammed, Rahayu Binti Ahmad, Syahida Binti Hassan, Yousef Fazea, and Ahmed Ibrahim Alzahrani
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Social media ,CRM ,SMEs ,Performance ,Integrated model ,FVM ,Information technology ,T58.5-58.64 - Abstract
Social media has swiftly established itself as a primary source of products’ information for customers. Nowadays, Small and Medium-size Enterprises (SMEs) can use social media to develop Customer Relationship Management platforms (social CRM). Firms, particularly SMEs in developing countries need to understand the factors affecting their performance by implementing social CRM. However, there is a dearth of awareness on the impact of social CRM on the performance of SMEs. This study proposes an integrated model that aims to investigate the effects of social CRM on SMEs’ performance. The model is constructed by incorporating three dominant theoretical frameworks: the Fit-Viability Model (FVM), Network Externalities, and the Resource-Based View (RBV). A cross-sectional survey was used to gather data from 149 SMEs managerial staff. Findings revealed that almost 50% of the variability in the performance of SMEs is explained by the fitness and viability of social CRM. In addition, network externalities of social media significantly impact the social CRM fitness in the context of SMEs with path coefficient 0.617. Furthermore, the internal financial resources factor makes sCRM viable for SMEs as the results show significant relationship between the internal financial resources and the sCRM viability with 0.536 path coefficient. Manager innovativeness, IT knowledge, top management support, and government assistance, on the other hand, do not contribute significantly to the viability of social CRM for SMEs. The model aids SMEs in making well-informed decisions regarding the adoption of social CRM by evaluating both the suitability of social media for CRM tasks and the enterprise preparedness to implement social CRM, leading to enhanced performance.
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- 2024
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30. An Ecological-Integrated Framework for an Inclusive Academia
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Damiani, Paola, Guaraldi, Giacomo, Genovese, Elisabetta, Lotti, Antonella, Filipe, Joaquim, Editorial Board Member, Ghosh, Ashish, Editorial Board Member, Zhou, Lizhu, Editorial Board Member, Casalino, Gabriella, editor, Di Fuccio, Raffaele, editor, Fulantelli, Giovanni, editor, Raviolo, Paolo, editor, Rivoltella, Pier Cesare, editor, Taibi, Davide, editor, and Toto, Giusi Antonia, editor
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- 2024
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31. Emotion Analysis of Weibo Based on Long Short-Term Memory Neural Network
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Kangshun, Li, Chen, Weicong, Lei, Yishu, Filipe, Joaquim, Editorial Board Member, Ghosh, Ashish, Editorial Board Member, Zhou, Lizhu, Editorial Board Member, Li, Kangshun, editor, and Liu, Yong, editor
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- 2024
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32. Study on the Integrated Technical and Economic Measure Evaluation Method to Increase Oil Production in Low Porosity and Low Permeability Oilfield
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Li, Jia, Li, Jian, Peng, Yun, Yan, Wei, Fang, Li-chun, Yi, Jie-xin, Liu, Yan-lu, Liu, Chun-feng, Wu, Wei, Series Editor, and Lin, Jia'en, editor
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- 2024
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33. Proposal for a model integrating sustainability and social innovation in higher education institutions
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Alvarenga, Mariana, Aguiar Dutra, Ana Regina, Fernandez, Felipe, Thomé, Ricardo Lemos, Junges, Ivone, Nunes, Nei, and Guerra, José Baltazar Salgueirinho Osório de Andrade
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- 2024
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34. Constraint optimization of an integrated production model utilizing history matching and production forecast uncertainty through the ensemble Kalman filter
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Mehdi Fadaei, Mohammad Javad Ameri, and Yousef Rafiei
- Subjects
History matching ,Uncertainty ,Constraint optimization ,Integrated model ,Ensemble Kalman filter ,Medicine ,Science - Abstract
Abstract The calibration of reservoir models using production data can enhance the reliability of predictions. However, history matching often leads to only a few matched models, and the original geological interpretation is not always preserved. Therefore, there is a need for stochastic methodologies for history matching. The Ensemble Kalman Filter (EnKF) is a well-known Monte Carlo method that updates reservoir models in real time. When new production data becomes available, the ensemble of models is updated accordingly. The initial ensemble is created using the prior model, and the posterior probability function is sampled through a series of updates. In this study, EnKF was employed to evaluate the uncertainty of production forecasts for a specific development plan and to match historical data to a real field reservoir model. This study represents the first attempt to combine EnKF with an integrated model that includes a genuine oil reservoir, actual production wells, a surface choke, a surface pipeline, a separator, and a PID pressure controller. The research optimized a real integrated production system, considering the constraint that there should be no slug flow at the inlet of the separator. The objective function was to maximize the net present value (NPV). Geological data was used to model uncertainty using Sequential Gaussian Simulation. Porosity scenarios were generated, and conditioning the porosity to well data yielded improved results. Ensembles were employed to balance accuracy and efficiency, demonstrating a reduction in porosity uncertainty due to production data. This study revealed that utilizing a PID pressure controller for the production separator can enhance oil production by 59% over 20 years, resulting in the generation of 2.97 million barrels of surplus oil in the field and significant economic gains.
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- 2024
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35. Integrating presence‐only and detection/non‐detection data to estimate distributions and expected abundance of difficult‐to‐monitor species on a landscape‐scale.
- Author
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Twining, Joshua P., Fuller, Angela K., Sun, Catherine C., Calderón‐Acevedo, Camilo A., Schlesinger, Matthew D., Berger, Melanie, Kramer, David, and Frair, Jacqueline L.
- Subjects
- *
NUMBERS of species , *BOBCAT , *SPECIES distribution , *SPECIES , *COYOTE , *SPATIAL variation - Abstract
Estimating species distribution and abundance is foundational to effective management and conservation.Using an integrated species distribution model that combines presence‐only data from various sources with detection/non‐detection data from structured surveys, we estimated the distribution and expected abundance of three difficult‐to‐monitor mammals of management concern across New York State, namely, coyotes (Canis latrans), bobcats (Lynx rufus) and black bears (Ursus americanus). Three distinct landscape‐scale camera trap surveys provided detection/non‐detection data over 9 years between 2013 and 2021, and we augmented those data with incidental records of our focal species from public repositories. We used an inhomogeneous Poisson point process to construct an integrated model that fit both data types simultaneously.We demonstrate a simple application of spatial point density of all species records in the accessed public databases to inform the thinning process to account for unknown spatial sampling in the presence‐only data, often referred to as the 'magic covariate'. Using this approach, we examine habitat associations and provide spatially explicit estimates in expected abundance across the entirety of New York State for all three focal species.As expected, coyotes were the most widely distributed and abundant species, with a strong positive association with agricultural land uses. Bobcats exhibited low expected abundance throughout the state and showed positive associations with deciduous forest and forest edge, and a negative association with road density. Finally, we observed considerable spatial variation in abundance of black bears with expected abundance increasing in association with various forest cover and composition covariates and decreasing with crop cover. We present insights into habitat associations and spatial variation in abundance, and provide management implications for each of the species of interest.Synthesis and applications. Our integrated modelling method allows for managers to use citizen sightings combined with detection/non‐detection surveys to estimate robust indices of abundance for both high‐ and low‐density, and wide‐spread versus patchily distributed species. Through comparison with previous studies, we highlight how broad‐scale programmes, such as the statewide efforts to estimate species distributions undertaken here, can benefit substantively from integrated models that leverage additional data (here, incidental records) from a larger region of space, and thus capture more landscape heterogeneity than is plausible within formalized surveys alone. [ABSTRACT FROM AUTHOR]
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- 2024
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36. Smart Homes as Catalysts for Sustainable Consumption: A Digital Economy Perspective.
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Strzelecki, Artur, Kolny, Beata, and Kucia, Michał
- Abstract
The green living issues that arise as a result of smart home use in the context of sustainability consumption, at a time when smart homes are being built that can improve the management of electricity, water, gas consumption, and when their use offers the opportunity to raise awareness of caring for health and achieving wellbeing, became the basis for writing this article. This paper explores the intersection of smart home technologies, sustainable consumption, and the digital economy, offering insights into how digital advancements can foster environmentally responsible consumer behaviors. The motivation behind this study is the growing environmental concerns and the need for sustainable solutions in consumer behavior. Despite the advancements in smart home technologies, there is a significant gap in the literature regarding their role in promoting sustainable consumption. The research employs an extended unified theory of acceptance and use of technology (UTAUT2) model, integrating factors such as convenience, health and wellbeing, and environmental impact to assess the determinants influencing the adoption of smart home technologies. This study follows a comprehensive research process involving a survey of 795 individuals and the use of structural equation modeling (SmartPLS 4). The empirical findings reveal that factors such as performance expectancy and personal innovativeness are critical in shaping the adoption of smart home technologies. Additionally, this study highlights the significant positive influence of smart homes on sustainable consumption behaviors, underscoring their potential in driving the digital economy towards sustainability goals. The significance of these findings lies in their contribution to the understanding of how digital technologies, particularly smart homes, can enhance sustainable consumption, offering implications for policymakers, developers, and stakeholders in the digital economy seeking to promote sustainability through technological innovations. [ABSTRACT FROM AUTHOR]
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- 2024
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37. Identifying Risk Components Using a Sewer-Road Integrated Urban Stormwater Model.
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Shen, Chen, Xia, Haishan, Fu, Xin, Wang, Xinhao, and Wang, Weiping
- Subjects
RAINSTORMS ,PUBLIC officers ,URBANIZATION ,RESEARCH personnel ,FLOODS ,SEWERAGE - Abstract
Disasters caused by heavy rainfalls are of growing concern to researchers and government officials. While many studies have provided details of rainstorm-induced risks and efficient strategies for stormwater management, there is still a lack of attention to how the interactions between urban sewer systems and road networks during precipitation events affect sewer system performance and road inundation. To fill this gap, we have developed an integrated model that combines hydraulic characteristics and the topological structure of a sewer-road network system to explore the behaviour of these two interdependent systems and identify risk components during precipitation events. We apply the model to a watershed during different return periods of precipitation events in Cincinnati, Ohio, USA. The results reveal that the behaviour of some inconspicuous pipes has a significant impact on the sewer-road network system, resulting in a significant decrease in the system performance. Moreover, the interactions between road and sewer networks create multiple microstructures of connected components, which leads to different risks of interdependent systems and road inundations. The modelling results provide target areas for mitigation projects to reduce rainstorm-induced risks. [ABSTRACT FROM AUTHOR]
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- 2024
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38. Integrated Model for Comprehensive Performance Investigation of Solar Concentrated Photovoltaic‐Thermal System Embedded with Microchannel Heat Sinks.
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Chaurasia, Harsh and Reddy, Kalvala Srinivas
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HEAT sinks ,ELECTRIC power ,FINITE volume method ,SOLAR cells ,RAY tracing ,COOLING systems - Abstract
Concentrated photovoltaic (CPV) is a well‐established renewable energy technology. A significant challenge in CPV systems is their low efficiency, majorly due to localized heating yielded from concentration, often requiring the use of cooling systems. The accurate performance analysis and cooling system design for CPV systems require a multiphysics model. Herein, an integrated optical–thermal–electrical model is proposed for the performance evaluation of CPV systems incorporated with different configurations of microchannel heat sinks. The heat sink configuration includes 116 parallel and counter microchannels (Configuration A and B), a single wide microchannel (Configuration C), and single wide minichannel (Configuration D) heat sinks. This study involves 3D Monte‐Carlo ray tracing, finite volume method, and cell‐based electrical modeling. The results indicate that the flux profile over the absorber is highly nonuniform in nature. Furthermore, the CPV system with a Configuration C heat sink achieves a better uniformity in temperature, providing an optimized thermal performance of 64.63%. Moreover, the integrated model considers the impact of PV cell current mismatch that becomes prominent at increasing incidence angles. A maximum deviation of 6.9% in electrical power is obtained while comparing predicted numerical results against experimental results available in literature. [ABSTRACT FROM AUTHOR]
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- 2024
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39. Integrated distance sampling models for simple point counts.
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Kéry, Marc, Royle, J. Andrew, Hallman, Tyler, Robinson, W. Douglas, Strebel, Nicolas, and Kellner, Kenneth F.
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- *
BIODIVERSITY monitoring , *PROBLEM solving , *CHILDREN with intellectual disabilities - Abstract
Point counts (PCs) are widely used in biodiversity surveys but, despite numerous advantages, simple PCs suffer from several problems: detectability, and therefore abundance, is unknown; systematic spatiotemporal variation in detectability yields biased inferences, and unknown survey area prevents formal density estimation and scaling‐up to the landscape level. We introduce integrated distance sampling (IDS) models that combine distance sampling (DS) with simple PC or detection/nondetection (DND) data to capitalize on the strengths and mitigate the weaknesses of each data type. Key to IDS models is the view of simple PC and DND data as aggregations of latent DS surveys that observe the same underlying density process. This enables the estimation of separate detection functions, along with distinct covariate effects, for all data types. Additional information from repeat or time‐removal surveys, or variable survey duration, enables the separate estimation of the availability and perceptibility components of detectability with DS and PC data. IDS models reconcile spatial and temporal mismatches among data sets and solve the above‐mentioned problems of simple PC and DND data. To fit IDS models, we provide JAGS code and the new "IDS()" function in the R package unmarked. Extant citizen‐science data generally lack the information necessary to adjust for detection biases, but IDS models address this shortcoming, thus greatly extending the utility and reach of these data. In addition, they enable formal density estimation in hybrid designs, which efficiently combine DS with distance‐free, point‐based PC or DND surveys. We believe that IDS models have considerable scope in ecology, management, and monitoring. [ABSTRACT FROM AUTHOR]
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- 2024
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40. Real-time flood forecasting using an integrated hydrologic and hydraulic model for the Vamsadhara and Nagavali basins, Eastern India.
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Venkata Rao, G., Nagireddy, Nageswara Reddy, Keesara, Venkata Reddy, Sridhar, Venkataramana, Srinivasan, Raghavan, Umamahesh, N. V., and Pratap, Deva
- Subjects
FLOOD forecasting ,HYDRAULIC models ,HYDROLOGIC models ,RAINFALL ,TROPICAL cyclones ,LEAD time (Supply chain management) ,FLOODS ,WATERSHEDS - Abstract
Due to recent rainfall extremes and tropical cyclones that form over the Bay of Bengal during the pre- and post-monsoon seasons, the Nagavali and Vamsadhara basins in India experience frequent floods, causing significant loss of human life and damage to agricultural lands and infrastructure. This study provides an integrated hydrologic and hydraulic modeling system that is based on the Soil and Water Assessment Tool model and the 2-Dimensional Hydrological Engineering Centre-River Analysis System, which simulates floods using Global Forecasting System rainfall forecasts with a 48-h lead time. The integrated model was used to simulate the streamflow, flood area extent, and depth for the historical flood events (i.e., 1991–2018) with peak discharges of 1200 m
3 /s in the Nagavali basin and 1360 m3 /s in the Vamsadhara basin. The integrated model predicted flood inundation depths that were in good agreement with observed inundation depths provided by the Central Water Commission. The inundation maps generated by the integrated modeling system with a 48-h lead time for tropical cyclone Titli demonstrated an accuracy of more than 75%. The insights gained from this study will help the public and government agencies make better decisions and deal with floods. [ABSTRACT FROM AUTHOR]- Published
- 2024
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41. Modelling and estimating trajectory points from RTK-GNSS based on an integrated modelling approach.
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Nahar, Ravenny Sandin, Kok Mun Ng, Kamaruzaman, Fadhlan Hafizhelmi, Razak, Noorfadzli Abdul, and Johari, Juliana
- Subjects
KRIGING ,ARTIFICIAL satellites in navigation ,SCATTER diagrams ,GLOBAL Positioning System ,BOX-Jenkins forecasting ,LOCALIZATION (Mathematics) - Abstract
The sparse Gaussian process regression (GPR) has been used to model trajectory data from Real time kinematics-global navigation satellite system (RTK-GNSS). However, upon scrutinizing the model residuals; the sparse GPR model poorly fits the data and exhibits presence of correlated noise. This work attempts to address these issues by proposing an integrated modeling approach called GPR-LR-ARIMA where the sparse GPR was integrated with the linear regression with autoregressive integrated moving average errors (LR-ARIMA) to further enhance the description of the trajectory data. In this integrated approach, the predicted trajectory points from the GPR were further described by the LR-ARIMA. Simulation of the GPR-LR-ARIMA on three sets of trajectory data indicated better model fit, revealed in the normally distributed model residuals and symmetrically distributed scatter plots. Correlated noise was also successfully eliminated by the model. The GPR-LR-ARIMA outperformed both the GPR and LRARIMA by its ability to improve mean-absolute-error in 2-dimension positioning by up to 86%. The GPR-LR-ARIMA contributes to enhancement of positioning accuracy of dynamic GNSS measurements in localization and navigation system with good model fit. [ABSTRACT FROM AUTHOR]
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- 2024
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42. Investigation of integrated model for optimizing the performance of urban wastewater system
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Ahmad Naeemah Bashara and Farhad Qaderi
- Subjects
mathematical modeling ,urban wastewater system ,integrated model ,wastewater treatment ,optimization ,Environmental technology. Sanitary engineering ,TD1-1066 - Abstract
Due to the rapid population and economic growth, the demand for water has increased. In addition, the natural resources are limited and degrade because of several factors such as the climate change. These challenges lead to reduce the ability of providing water at the required quantity and quality. One of solutions to maintain the sustainability of water supply from different sources is reuse of wastewater. For this aim, it is crucial to optimize wastewater systems. This research paper aims to describe different modelling possibilities and optimization methods for various components of integrated urban wastewater systems. The main conclusion of this research paper is the lack of study of optimum design and operation of urban wastewater systems in a holistic method. Moreover, most of previous studies on integrated wastewater management have been conducted on combined sewer systems.
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- 2024
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43. Integrated model construction for state of charge estimation in electric vehicle lithium batteries
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Yuanyuan Liu and Wenxin Dun
- Subjects
Electric vehicles ,Lithium batteries ,SOC ,Integrated model ,Energy industries. Energy policy. Fuel trade ,HD9502-9502.5 - Abstract
Abstract This research addresses the issue of State of Charge (SOC) prediction for electric vehicle batteries by employing a dynamic Kalman neural network model. The model is optimized using a Genetic algorithm to adjust the neural network weights. Additionally, a strategy involving support vector machines for model optimization is proposed. This strategy involves preprocessing the data, selecting appropriate kernel functions for training, and merging prediction results to enhance the stability of the model. Results indicated that the Dynamic Genetic Kalman Neural Network (DGKNN) model achieved the minimum prediction error percentage of only 0.1529% when the correction coefficient was set to 0.7. The DGKNN model consistently exhibited the lowest error percentage, average absolute error, mean square error, and root mean square error when handling small, medium, and large datasets. For instance, in the small dataset, the error percentage was only 0.1518, and the root mean square error was only 0.0604. The research findings demonstrated that the proposed model exhibited high real-time accuracy in predicting battery SOC, enabling real-time monitoring of battery operating parameters. The method proposed in this study can accurately predict the state of battery charge, extend the life of battery packs, and improve the performance of electric vehicles. It has important significance for promoting the development of the electric vehicle industry.
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- 2024
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44. Research on Arthroscopic Images Bleeding Detection Algorithm Based on ViT-ResNet50 Integrated Model and Transfer Learning
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Zewen Liu, Shaoyi Zhou, Jianqiao Chu, Zhiyuan Chai, Dongdong Chang, Yi Yuan, Jinling Qin, and Xiancheng Wang
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Arthroscopy surgery ,bleeding detection ,transfer learning ,integrated model ,Vision Transformer ,ResNet50 ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 - Abstract
Arthroscopic surgery is a major technique for the treatment of joint-related diseases, however, intraoperative bleeding often produces a blood mist that severely affects the surgeon’s field of vision and requires prompt high-flow drainage to remove the mist. Therefore, accurate bleeding detection is a prerequisite for effective blood mist removal. This paper proposes an arthroscopic image bleeding detection method based on the ViT-ResNet50 integrated model and transfer learning to solve the problem of relying on naked eye to identify bleeding in existing arthroscopic surgery. Firstly, Vision Transformer model and ResNet50 model are used to learn features by transfer learning on ImageNet dataset respectively. Then, a difference-enhanced proportional sampling method is proposed to enhance the unbalanced data. Finally, the two sub-network models are integrated through weighted soft voting method to realize bleeding detection in arthroscopic images. In order to evaluate the performance of the model proposed in this paper, experimental results on real data show that the integrated model is superior to a single deep learning model in various performance indicators and has good effects in detecting bleeding in arthroscopic images.
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- 2024
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45. Socio-Cultural Aspects of Diabetic Foot: An Ethnographic Study and an Integrated Model Proposal
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Davide Costa, Giuseppe Gallelli, Enrica Scalise, Nicola Ielapi, Umberto Marcello Bracale, and Raffaele Serra
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diabetic foot ,qualitative research ,ethnography ,Italy ,socio-cultural aspects ,integrated model ,Social sciences (General) ,H1-99 - Abstract
Background: Diabetes mellitus (DM) is an ongoing and growing health problem worldwide, with a series of important complications such as diabetic foot that can significatively reduce the quality of life of affected patients. This study aims to explore the socio-cultural aspects of patients with diabetic foot, analyzing the following research question: “What are the socio-cultural aspects experienced by patients with diabetic foot?” Methods: A qualitative design using an ethnographic approach was applied to study the social and cultural aspects of Italian diabetic foot patients. Results: We included 20 key informants: 13 men and 7 women. Ages ranged from 54 to 71, with an average age of 61.2. The data analysis revealed five main themes: perceptions of diabetic foot, living with diabetic foot, impacts of culture and economic performance, barriers to health and diabetic foot, and home remedies and alternative medicine. Conclusions: This study provides a new perspective on the influence of cultural factors on the health of diabetic foot patients, showing various factors related to a lack of knowledge and training, fear, and acceptance of diabetic foot. This study also presents a new integrated model which will allow patients and practitioners to act on the various critical issues that emerged from our research.
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- 2024
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46. An Integrated Fuzzy Delphi and Fuzzy AHP Model for Evaluating Factors Affecting Human Errors in Manual Assembly Processes
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Fahad M. Alqahtani and Mohammed A. Noman
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integrated model ,human errors ,manual assembly ,fuzzy Delphi ,fuzzy AHP ,Systems engineering ,TA168 ,Technology (General) ,T1-995 - Abstract
Human errors (HEs) are prevalent issues in manual assembly, leading to product defects and increased costs. Understanding and knowing the factors influencing human errors in manual assembly processes is essential for improving product quality and efficiency. This study aims to determine and rank factors influencing HEs in manual assembly processes based on expert judgments. To achieve this objective, an integrated model was developed using two multi-criteria decision-making (MCDM) techniques—specifically, the fuzzy Delphi Method (FDM) and the fuzzy Analytic Hierarchy Process (FAHP). Firstly, two rounds of the FDM were conducted to identify and categorize the primary factors contributing to HEs in manual assembly. Expert consensus with at least 75% agreement determined that 27 factors with influence scores of 0.7 or higher significantly impact HEs in these processes. After that, the priorities of the 27 influencing factors in assembly HEs were determined using a third round of the FAHP method. Data analysis was performed using SPSS 22.0 to evaluate the reliability and normality of the survey responses. This study has divided the affecting factors on assembly HEs into two levels: level 1, called main factors, and level 2, called sub-factors. Based on the final measured weights for level 1, the proposed model estimation results revealed that the most influential factors on HEs in a manual assembly are the individual factor, followed by the tool factor and the task factor. For level 2, the model results showed a lack of experience, poor instructions and procedures, and misunderstanding as the most critical factors influencing manual assembly errors. Sensitivity analysis was performed to determine how changes in model inputs or parameters affect final decisions to ensure reliable and practical results. The findings of this study provide valuable insights to help organizations develop effective strategies for reducing worker errors in manual assembly. Identifying the key and root factors contributing to assembly errors, this research offers a solid foundation for enhancing the overall quality of final products.
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- 2024
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47. A Comparison of the Theoretical Models of NSSI
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Hird, Kirsty, Hasking, Penelope, Boyes, Mark, Lloyd-Richardson, Elizabeth E., book editor, Baetens, Imke, book editor, and Whitlock, Janis L., book editor
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- 2024
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48. Combining corporate environmental sustainability and customer experience management to build an integrated model for decision-making
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Calza, Francesco, Sorrentino, Annarita, and Tutore, Ilaria
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- 2023
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49. Social marketing framework for anti-littering behavior: an integrated serial mediation model
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Kaur, Ranjit and Singh, Jagwinder
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- 2023
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50. Research on optimization of mining methods for broken ore bodies based on interval-valued pythagorean fuzzy sets and TOPSIS-GRA
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Wu, Junxi, Zhao, Guoyan, Wang, Ning, Xu, Yihang, and Wang, Meng
- Published
- 2024
- Full Text
- View/download PDF
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