2,951 results on '"Adaptive strategies"'
Search Results
152. Human Rights Defenders in Colombia : Adaptive mobilization as a tool for territorial peace during the post-conflict
- Author
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Maria Catalina, Robayo Serrano and Maria Catalina, Robayo Serrano
- Abstract
While existing literature has made significant contributions on violence against human rights defenders (HRDs), there remains a gap in understanding local perceptions, leadership roles, responses to violence, and their impact on collective action for peacebuilding. This research investigates the role of HRDs in promoting territorial peace in post-conflict Colombia, addressing the question of which type of HRDs mobilization strategy increases the likelihood of territorial peace during the post-conflict. By implementing a structure focus comparison, the study analyzes two sub-regions, Northeastern of Antioquia, and Western Valle del Cauca – Buenaventura. The findings of the study support the hypothesis that the implementation of adaptive strategies by HRDs, such as approaches, adjustments, and avoidance, leads to increased levels of territorial peace, in terms of enhancing self-determination and consolidating organized protection measures. This is because as the theoretical argument suggested, adaptive strategies have facilitated HRDs' to address emerging territorial tensions and enhance their capacity for the establishment of internal and external mechanisms for peacebuilding. Moreover, these findings underscore the importance of coordinated implementation of adaptive strategies to effectively promote territorial peace. The study collected data by conducting interviews with HRDs and experts in Colombia and triangulating information from secondary data sources.
- Published
- 2023
153. Exploring adaptive strategies to cope with climate change: The case study of Le Corbusier's Modern Architecture retrofitting.
- Author
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Lamberti, Giulia, Contrada, Francesca, and Kindinis, Andrea
- Abstract
• Climate change's impact on retrofitting was tested on Le Corbusier's apartment. • Climate change scenarios project up to 70% increase in summer overheating. • Adaptive natural ventilation can reduce warm discomfort of 50–60%. • Adaptive setpoints can reduce total energy consumption of 20–30%. • Adaptive strategies are particularly favourable in historic buildings. Historic buildings, often exempt from retrofits to preserve originality, require retrofitting due to potential future climate-related indoor issues. For Modern Architecture constructions, there is a need to find solutions that help address the discomfort and heat losses caused by the extensive use of glazing. By analysing Le Corbusier's studio-apartment this paper aims to inspect: (i) Solutions for energy, Indoor Environmental Quality, and preservation; (ii) Climate change impact on them; (iii) Possible adaptation strategies to cope with climate change. Spectrally selective glazing reduced summer overheating by 15%; high-performance glazing lowers cold discomfort (24%) and heating (22%) but increased warm discomfort; shadings maintained energy use and reduced summer discomfort by up to 44%; thermal insulation can reduce winter discomfort and halves energy use but raised summer discomfort by up to 41%. Tests on 2050–2100 climate change scenarios reveal up to 70% more warm discomfort hours. Adaptive strategies can help, with natural ventilation cutting warm discomfort by 50–60%, and adaptive setpoints reducing cooling demand by about 35%. Adaptive strategies can complement traditional retrofitting in addressing current and future climate conditions, especially in historic buildings that require minimal interventions to preserve their historical characteristics and enhance resilience. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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154. Building adaptive capacity to address coastal flooding: The case of a small Texas City.
- Author
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Bezboruah, Karabi, Sakalker, Amruta, Hummel, Michelle, Jenewein, Oswald, Masten, Kathryn, and Liu, Yonghe
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SMALL cities ,NONGOVERNMENTAL organizations ,FLOODS ,TELECOMMUNICATION systems ,NONPROFIT organizations ,PHYSIOLOGICAL adaptation ,RURAL health clinics - Abstract
Coastal flooding is a severe and recurring problem, as evidenced by recent disasters that have caused significant damage for coastal communities. A community's ability to mitigate the effects of coastal flooding depends on the local context and its adaptive capacity. Although past research has highlighted the important role that non-governmental organizations play in building adaptive capacity to support effective adaptation, few studies have focused specifically on rural, community-based nonprofits. To fill this gap, we employ a mixed-methods approach to evaluate the role of the Ingleside on the Bay Coastal Watch Association (IOBCWA), a resident-led, community-based nonprofit, in building adaptive capacity to coastal flooding in the City of Ingleside on the Bay (IOB; pop. 800), located in the Coastal Bend Region of Texas. By applying a grounded theory framework, we show that IOBCWA has improved the adaptive capacity of IOB through five primary activities: engaging in community organizing, boosting advocacy and outreach, implementing evidence-based data collection, building capacity among residents, and developing regional communication networks. Our findings are further examined using the Regional Fingerprint tool (Hirschfeld et al., 2020) to assess progress toward building regional adaptive capacity. We identify a need for more formalized policies, enhanced regional partnerships, and broader inclusion of socially vulnerable groups to address environmental challenges. Overall, this work highlights the important role that small, community-based nonprofits like IOBCWA play in building community adaptive capacity and suggests the need for a more comprehensive regional approach with participation from multiple stakeholders to address challenges related to coastal flooding. • Emphasizes the role of CBOs, participatory governance, and local knowledge in coastal flood mitigation initiatives. • Applies grounded theory to analyze the environmental challenges in coastal communities. • Explores the adaptive capacity of small coastal communities amid industrial and environmental threats. • Evaluates adaptive capacities of a community by applying the Regional Fingerprint tool (Hirschfeld et al., 2020). • Underscores the importance of regional collaboration among diverse stakeholders in building adaptive capacities. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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155. Identification of key overlapping DEGs and molecular pathways under multiple stressors in the liver of Nile tilapia (Oreochromis niloticus).
- Author
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Farhadi, Ardavan, Tang, Shangshang, Huang, Maoxian, Yu, Qiuran, Xu, Chang, and Li, Erchao
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NILE tilapia ,OXIDOREDUCTASES ,CYTOCHROME oxidase ,BLOOD coagulation factors ,CARDIAC contraction ,SUSTAINABLE aquaculture ,FISH farming ,COMPLEMENT receptors - Abstract
The identification of key genes and molecular pathways that are involved in the response to stressors is crucial for controlling stress in fish and sustainable aquaculture. Environmental stressors can induce stress responses in aquatic animals, resulting in compromised immune function, inhibited growth, and increased mortality rates. mRNA-seq analysis provides a powerful tool to identify key genes and pathways associated with stress response. In the present study, mRNA-seq analysis was employed to identify key overlapping differentially expressed genes (DEGs) and molecular pathways under salinity, nitrite, copper, and pH stress in the liver of Nile tilapia (Oreochromis niloticus). The pathways associated with the immune response, oxygen transport, homeostasis, and oxidative stress were enriched across all stressors. The top KEGG pathways were complement and coagulation cascades, PPAR signaling pathway, and cardiac muscle contraction. The top GO enrichment terms were oxidoreductase activity, aerobic respiration, endopeptidase inhibitor activity, endopeptidase regulator activity, heme binding, and iron ion binding. The complement genes (C3 , C4 , C5 , factor B , and factor H), alpha-2-macroglobulin (A2M), hemoglobin subunit epsilon (HBE), hemoglobin subunit alpha (HBA), coagulation factor genes (XI and X) and the cytochrome c oxidase (COX) gene family (cox1 , cox2 , cox3 , cytochrome P450) were identified as key shared genes across multiple stressors. The discovery of these genes and molecular pathways provided a better understanding of the molecular mechanism underlying the stress response in Nile tilapia. The results of the present study can facilitate the development of stress management strategies in Nile tilapia. [Display omitted] • Overlapping DEGs and molecular pathways under multiple stressors were discovered in Nile tilapia • Pathways associated with the immune response, homeostasis, and oxidative stress were enriched across all stressors • Top KEGG pathways were complement and coagulation cascades, PPAR signaling pathway, and cardiac muscle contraction • Top GO enrichment terms were oxidoreductase activity, aerobic respiration, endopeptidase inhibitor, and heme binding • Complement genes and COX gene family were identified as key shared genes across multiple stressors [ABSTRACT FROM AUTHOR]
- Published
- 2023
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156. Emotion regulation dynamics in daily life: Adaptive strategy use may be variable without being unstable and predictable without being autoregressive
- Author
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Elisabeth S. Blanke, Zarah Rowland, Mario Wenzel, and Thomas Kubiak
- Subjects
Adaptive strategies ,Emotions ,Variance (accounting) ,Affect (psychology) ,Standard deviation ,Emotional Regulation ,Variable (computer science) ,Autoregressive model ,Well-being ,Statistics ,Humans ,Predictability ,Psychology ,General Psychology ,Data Management - Abstract
Recent research has demonstrated the adaptiveness of variability in emotion regulation (ER) by showing that variability between and, when controlled for depression, within ER strategies as assessed via the standard deviation was associated with less negative affect. We first replicated associations with negative affect by using the relative standard deviation, which is less confounded with the mean. Second, following research on affect dynamics, we extended this line of research by examining five additional ER dynamic measures covering ER instability, inertia, predictability, differentiation, and diversity. Reanalyzing data from five ambulatory assessment data sets (N = 717), we found that (a) the eight ER dynamic measures loaded on five factors that explained unique variance, (b) most ER dynamic measures had good reliabilities, and (c) between-strategy mean endorsement was positively, whereas between-strategy variability and ER predictability were negatively associated with negative affect. These results suggest that the variable but predictable use of emotion regulation strategies in daily life is beneficial for individuals' affective well-being in daily life. (PsycInfo Database Record (c) 2021 APA, all rights reserved).
- Published
- 2022
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157. Edge-Based Decentralized Adaptive Pinning Synchronization of Complex Networks Under Link Attacks
- Author
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Dan Liu and Dan Ye
- Subjects
Adaptive strategies ,Class (computer programming) ,Computer Networks and Communications ,Computer science ,Distributed computing ,Link (geometry) ,Complex network ,Computer Science Applications ,Coupling (computer programming) ,Artificial Intelligence ,Asynchronous communication ,Synchronization (computer science) ,Enhanced Data Rates for GSM Evolution ,Software ,Computer Science::Cryptography and Security - Abstract
This article studies the pinning synchronization problem with edge-based decentralized adaptive schemes under link attacks. The link attacks considered here are a class of malicious attacks to break links between neighboring nodes in complex networks. In such an insecure network environment, two kinds of edge-based decentralized adaptive update strategies (synchronous and asynchronous) on coupling strengths and gains are designed to realize the security synchronization of complex networks. Moreover, by virtue of the edge pinning technique, the corresponding secure synchronization problem is considered under the case where only a small fraction of coupling strengths and gains is updated. These designed adaptive strategies do not require any global information, and therefore, the obtained results in this article are developed in a fully decentralized framework. Finally, a numerical example is provided to verify the availability of the achieved theoretical outcomes.
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- 2022
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158. Obtaining Classification Rules Using lvqPSO
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Lanzarini, Laura, Villa Monte, Augusto, Aquino, Germán, De Giusti, Armando, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Tan, Ying, editor, Shi, Yuhui, editor, Buarque, Fernando, editor, Gelbukh, Alexander, editor, Das, Swagatam, editor, and Engelbrecht, Andries, editor
- Published
- 2015
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159. Ecology and Evolution of Marine Diatoms and Parmales
- Author
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Kuwata, Akira, Jewson, David H., Ohtsuka, Susumu, editor, Suzaki, Toshinobu, editor, Horiguchi, Takeo, editor, Suzuki, Noritoshi, editor, and Not, Fabrice, editor
- Published
- 2015
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160. Resilience and Adaptation in Social-Ecological Systems
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Júnior, Washington Soares Ferreira, Nascimento, André Luiz Borba, Ramos, Marcelo Alves, de Medeiros, Patrícia Muniz, Soldati, Gustavo Taboada, Santoro, Flávia Rosa, Reyes-García, Victoria, Albuquerque, Ulysses Paulino, Albuquerque, Ulysses Paulino, editor, De Medeiros, Patrícia Muniz, editor, and Casas, Alejandro, editor
- Published
- 2015
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161. RURAL CLIMATE AND ADAPTIVE STRATEGIES FOR SUSTAINABLE FOOD SECURITY IN AKUNGBA-AKOKO, NIGERIA
- Author
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Abiodun Daniel OLABODE and Elisha Ademola ADELEKE
- Subjects
Rural Climate ,Adaptive Strategies ,Crop ,Food security ,Irrigation ,Nigeria ,Environmental sciences ,GE1-350 ,Geography (General) ,G1-922 - Abstract
Nigeria is highly vulnerable to the impacts of climatic influence on accessibility to quality food. Thus, this study focused on how people relate to the climatic condition with emphasis on improving crop production and the challenge of food insecurity. Systematic method was adopted for distribution of one-hundred and twenty copies of questionnaire among the head of the households. The sampling method involved selection of every 15th building with copy of fifteen questionnaire in each of the eight (8) quarters that made up the entire study area. 3-points Likert scale was adopted. Poor food production results from increased temperature and irrigation deficiency. Among all other adaptive measures adopted in response to climate impact on food production in this area, only irrigation system was rejected because its Mean Weight Value at 1.73 is below the 2.07 Grand Mean Weight Value. Intensive agricultural practices with irrigation-based system of farming is capable of producing crops with required moisture under diverse climatic conditions. Descriptive statistics such as tabulation and simple percentages were also employed for data analysis and presentation of results.
- Published
- 2017
162. A Voting-Mechanism-Based Ensemble Framework for Constraint Handling Techniques
- Author
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Guohua Wu, Ling Wang, Witold Pedrycz, Ponnuthurai Nagaratnam Suganthan, and Xupeng Wen
- Subjects
Adaptive strategies ,Mathematical optimization ,Computer science ,Process (engineering) ,media_common.quotation_subject ,Evolutionary algorithm ,Mechanism based ,Theoretical Computer Science ,Constraint (information theory) ,Computational Theory and Mathematics ,Ranking ,Voting ,Penalty method ,Software ,media_common - Abstract
Effective constraint handling techniques are of great significance for evolutionary algorithms dealing with constrained optimization problems. To date, many constraint handling techniques, such as penalty function, superiority of feasible solutions, and -constraint, have been designed. However, different constraint handling techniques are usually suited to different problems, even the most appropriate technique changes along with the stages of the optimization process. Motivated by this phenomenon, we propose a voting-mechanism based ensemble framework, named VMCH, to integrate multiple constraint handling techniques for solving various constrained optimization problems. In this framework, each constraint handling technique acts as a voter, all voters vote for each pair of solutions, and the solution in each pair with the highest weighted votes is considered better. In addition, an adaptive strategy is developed to adjust the voter weights according to their historical voting performance. To investigate the performance of VMCH in improving existing algorithms, the proposed VMCH is embedded into the three best algorithms in the competition on constrained single objective real-parameter optimization at CEC 2018, namely MAgES, iLSHADE, and IUDE, to form three new algorithm versions, i.e., MAgES-VMCH, iLSHADE-VMCH, and IUDE-VMCH. They are compared with seven state-of-the-art peer algorithms. Extensive experiments are conducted on 57 real-world constrained optimization problems. The ranking results show that the new algorithm version MAgES-VMCH takes first place among the ten comparison algorithms. Moreover, all the new VMCH-enhanced versions of the three best algorithms are superior to their original versions. Therefore, the proposed VMCH framework can achieve competitive performance in solving constrained optimization problems.
- Published
- 2022
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163. CARE-Share: A Cooperative and Adaptive Strategy for Distributed Taxi Ride Sharing
- Author
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Vaskar Raychoudhury, Snehanshu Saha, Aishwarya Manjunath, Saibal Kar, and Anusha Kamath
- Subjects
Adaptive strategies ,Operations research ,Computer science ,Mechanical Engineering ,Automotive Engineering ,Computer Science Applications - Published
- 2022
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164. Adaptive strategies for route selection en-route in transportation networks
- Author
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Chi Ho Yeung and Tak Shing Tai
- Subjects
Physics - Physics and Society ,Adaptive strategies ,Mathematical optimization ,Statistical Mechanics (cond-mat.stat-mech) ,Computer science ,Cellular Automata and Lattice Gases (nlin.CG) ,FOS: Physical sciences ,General Physics and Astronomy ,Physics and Society (physics.soc-ph) ,Nonlinear Sciences - Adaptation and Self-Organizing Systems ,Cellular automaton ,Path (graph theory) ,Traffic conditions ,Shortest path problem ,Adaptation and Self-Organizing Systems (nlin.AO) ,Nonlinear Sciences - Cellular Automata and Lattice Gases ,Condensed Matter - Statistical Mechanics ,Selection (genetic algorithm) - Abstract
We examine adaptive strategies adopted by vehicles for route selection en-route in transportation networks. By studying a model of two-dimensional cellular automata, we model vehicles characterized by a parameter called path-greediness, which corresponds to the tendency for them to travel to their destinations via the shortest path. The path-greediness of each individual vehicle is updated based on the local traffic conditions, to either keep the vehicle travels via a shorter path in an un-congested region or to explore longer diverted paths in a congested region. We found that the optimal number of steps to trigger an update of path-greediness is dependent on the density of vehicles, and the magnitude of path-greediness increment affects the macroscopic traffic conditions of the system. To better coordinate vehicles in denser networks, the update on the tendency for vehicles to travel via the shorter paths should be gradual and less frequent.
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- 2022
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165. Adaptive Strategies Adopted by Herders Against the Decollectivization of Rangeland in the Qinghai–Tibetan Plateau in China
- Author
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Yang Zhe, Jiu Cili, Ruth H. Mace, Du Juan, Bai Pengpeng, and Du Guozhen
- Subjects
adaptive strategies ,herding ,nomadic settlement project ,qinghai–tibetan plateau ,rangeland contract policy ,rangeland decollectivization ,Environmental sciences ,GE1-350 - Abstract
The domestication of the yak on the Qinghai–Tibetan Plateau probably dates back to 7300 years ago, when the rangelands were also utilized for cultivation. Over time, a complete system of herding and rangeland management developed. In recent years, however, the rangeland contract policy and nomadic settlement project have reduced the mobility of herds through the decollectivization of the rangeland. This process has destroyed the traditional nomadic lifestyle and caused difficulties, forcing the herders to adapt to new ways. This paper considers 3 issues: (1) the implementation of the contract policy and the settlement project—2 important policies that have caused the decollectivization of rangeland on the Qinghai–Tibetan Plateau; (2) the effects of the 2 policies on herding at 2 sites; and (3) the adaptive strategies employed by herders against the constraints of the policies. The study incorporates a literature review, fieldwork, key-person interviews, and focus group discussions. Community-based self-management of the rangeland appears to be the best strategy for herders. Policies such as group herding can help herders increase herd mobility, which is crucial for sustainably raising livestock on the Qinghai–Tibetan Plateau.
- Published
- 2019
- Full Text
- View/download PDF
166. Organized Civil Society Under Authoritarian Populism: Cases from Ecuador
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Appe Susan, Barragán Daniel, and Telch Fabian
- Subjects
nonprofit-government relations ,civil society-government relations ,populism ,authoritarian regime ,coping strategies ,adaptive strategies ,restrictive policies ,Social pathology. Social and public welfare. Criminology ,HV1-9960 - Abstract
This article examines how civil society organizations (CSOs) in Latin America cope with authoritarian populism. In particular, it outlines cases of coping and adaptive strategies by CSOs in Ecuador during the years of President Rafael Correa’s presidency (2007–2017). Ecuador provides an example of an authoritarian, leftist populist administration; thus situating our discussion in the general civil society-government relations literature, we link together trends of authoritarianism and populism and its implications on CSOs. Using a qualitative-interpretive approach with long-term fieldwork in Ecuador, we outline a selection of coping strategies used by organized civil society that include formal, semi-formal and informal organizational configurations.
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- 2019
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167. Overview on tyrosinases: Genetics, molecular biology, phylogenetic relationship.
- Author
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Capasso C and Supuran CT
- Subjects
- Animals, Humans, Bacteria enzymology, Fungi enzymology, Fungi genetics, Phylogeny, Protein Processing, Post-Translational, Monophenol Monooxygenase metabolism, Monophenol Monooxygenase genetics
- Abstract
Tyrosinases (TYRs) are enzymes found in various organisms that are crucial for melanin biosynthesis, coloration, and UV protection. They play vital roles in insect cuticle sclerotization, mollusk shell formation, fungal and bacterial pigmentation, biofilm formation, and virulence. Structurally, TYRs feature copper-binding sites that are essential for catalytic activity, facilitating substrate oxidation via interactions with conserved histidine residues. TYRs exhibit diversity across animals, plants, fungi, mollusks, and bacteria, reflecting their roles and function. Eukaryotic TYRs undergo post-translational modifications, such as glycosylation, which affect protein folding and activity. Bacterial TYRs are categorized into five types based on their structural variation, domain organization and enzymatic properties, showing versatility across bacterial species. Moreover, bacterial TYRs, akin to fungal TYRs, have been implicated in the synthesis of secondary metabolites with antimicrobial properties. TYRs share significant sequence homology with hemocyanins, oxygen-carrier proteins in mollusks and arthropods, highlighting their evolutionary relationships. The evolution of TYRs underscores the dynamic nature of these enzymes and reflects adaptive strategies across diverse taxa., (Copyright © 2024. Published by Elsevier Inc.)
- Published
- 2024
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168. Lappeenrannan alueen kärkiyritysten muutosjoustavuus ja sietokyky keskeisimmän kansainvälisen matkailijasegmentin kadottua
- Author
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Könönen, Ella, Kauppatieteiden laitos, Department of Business, Yhteiskuntatieteiden ja kauppatieteiden tiedekunta, Kauppatieteiden laitos, Faculty of Social Sciences and Business, Department of Business, Yhteiskuntatieteiden ja kauppatieteiden tiedekunta, and Faculty of Social Sciences and Business
- Subjects
tourism marketing and management ,adaptive strategies ,crisis ,market segmentation ,crisis management ,borderland ,resilience ,destination management ,matkailumarkkinointi ja johtaminen ,business continuity - Published
- 2023
169. MINERÍA Y RIESGO: PERCEPCIONES DEL PROYECTO NAVIDAD EN LA PROVINCIA DE CHUBUT
- Author
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Alfonso, Valentina
- Subjects
Risk ,adaptive strategies ,progress ,risk acceptability ,mining - Abstract
This paper aims to evaluate the ways in which various actors perceive risk and dispute its acceptability in the case of the «Navidad» mining project in the province of Chubut. The conflict will be considered in a context of three decades of environmental conflicts in the province, being framed in a broader debate between notions of progress and development and sustainability expectations. At first, the perceptions around mining will be estimated and analyzed according to the provincial State and the Assemblies for the “No a la Mina”. Following, the concept of acceptability of risk will be considered with the aim of analyzing the willingness of the actors to accept or avoid the risks in question, understanding that culture and social structure strongly affect the categorization of tolerable or intolerable risks. The ways of disputing acceptability by some actors will be understood as adaptive strategies, being the case of the Assemblies in their effort to resignify the acceptable risks, disputing the place occupied by the environment regarding the ideals of progress and development, and demanding the redefinition of the plateau as a sacrifice zone
- Published
- 2023
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170. Convergent catastrophes and the termination of the Arctic Norwegian Stone Age: A multi-proxy assessment of the demographic and adaptive responses of mid-Holocene collectors to biophysical forcing.
- Author
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Jørgensen, Erlend Kirkeng and Riede, Felix
- Subjects
- *
STONE Age , *POPULATION , *RESIDENTIAL mobility , *CLIMATE change , *FOREST declines , *DISASTERS - Abstract
Using multiple archeological and paleoenvironmental proxies, this paper makes the case for a climate-induced convergent catastrophe among the human population of terminal Stone Age Arctic Norway. We show that climatic changes correlate with the termination of the so-called Gressbakken phase (4200–3500 cal BP), and unpack the middle-range mechanisms linking the Gressbakken termination to contemporaneous changes in the biophysical environment. We show that what was a Holocene extreme, and likely volcanically-induced, climate deterioration around 3550 cal BP coincided with a population decline as reflected in the frequency of radiocarbon-dated archeological sites along with major changes in material culture and settlement pattern. Together, these proxies suggest a return to forms of social and economic organization based on lower population densities, higher residential mobility, and reduced locational investments. In establishing the middle-range ecological mechanics mediating these changes into archeologically observable patterns, the results indicate that the Gressbakken termination was the result of a particularly unstable climate period characterized by regional paludification, increased effective precipitation, forest decline, and likely impacts on reindeer populations and their migratory behavior, with drastic human implications. We argue for a convergent catastrophe-scenario in which a series of hardships between 4000 and 3500 cal BP exceeded the adaptive mitigation capabilities of the contemporaneous Arctic Norwegian population. Our study supports the notion that increased sedentism and locational investment actually increases vulnerability in the face of rapid biophysical change and contributes to the growing database of past human ecodynamics that speak to current socio-ecological concerns. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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171. Climatic Projections of Indian Ocean During 2030, 2050, 2080 with Implications on Fisheries Sector.
- Author
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Akhiljith, Paruthiyazhath Joshy, Liya, Vazhamattom Benjamin, Rojith, Girindran, Zacharia, Parayapanal Ulahannan, Grinson, George, Ajith, Sudhakaran, Lakshmi, Puthenthara Madhusoodanan, Sajna, Valiyakath Hussain, and Sathianandan, Thayyil Valappil
- Subjects
- *
AQUACULTURE , *FISHERIES , *MARICULTURE , *CLIMATE change , *OCEAN temperature , *OCEAN , *FISHERY management , *SALTWATER encroachment - Abstract
Akhiljith, P.J.; Liya, V.B.; Rojith, G.; Zacharia, P.U.; Grinson, G.; Ajith, S.; Lakshmi, P.M.; Sajna, V.H., and Sathianandan, T.V., 2019. Climatic projections of Indian ocean during 2030, 2050, 2080 with implications on fisheries sector. In: Jithendran, K.P.; Saraswathy, R.; Balasubramanian, C.P.; Kumaraguru Vasagam, K.P.; Jayasankar, V.; Raghavan, R.; Alavandi, S.V., and Vijayan, K.K. (eds.), BRAQCON 2019: World Brackishwater Aquaculture Conference. Journal of Coastal Research, Special Issue No. 86, pp. 198-208. Coconut Creek (Florida), ISSN 0749-0208. Climatic projections are essential to frame resilient strategies towards futuristic impacts of climate changes on fish species and habitat. The present study projects the variations of climatic variables such as Sea Surface Temperature (SST), Sea Surface Salinity (SSS), Sea Level Rise (SLR), Precipitation (Pr), and pH along the Indian Ocean. Climate projections for 2030, 2050 and 2080 were obtained as MIROC-ESM-CHEM, CMIP5 model output for each Representative Concentration Pathways (RCP) scenarios. Each climatic variable was assessed for any change against the reference year of 2015. The RCP scenarios showed an increasing trend for SLR and SST while a decreasing trend for SSS and pH. The study focuses on assessing the impacts of projected variations on marine and aquaculture system. The climate model projections show that the SST during 2080 is likely to rise by 0.69°C for the lowest emissions scenario and 2.6°C for the highest emissions scenario. Elevated temperature disturbs the homeostasis of fish and subjects to physiological stress in the habitat resulting in mortality. These thermal limits can predict distributional changes of marine species in response to climate change. Projections showed no significant changes in the pattern of precipitation. Changes in sea level rise and sea surface salinity reduce water quality, spawning and seed availability, increased disease incidence and damage to freshwater aquaculture system by salinization of groundwater. The results show that variation in SST and pH have a potential impact on marine fisheries while SSS, SLR, Precipitation affects the aquaculture systems. The synergic effects of climatic variations are found to have negative implications on capture fisheries as well as aquaculture system and are elucidated through this work. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
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172. Adaptive Strategies Adopted by Herders Against the Decollectivization of Rangeland in the Qinghai–Tibetan Plateau in China.
- Author
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Zhe, Yang, Cili, Jiu, Mace, Ruth H., Juan, Du, Pengpeng, Bai, and Guozhen, Du
- Abstract
The domestication of the yak on the Qinghai–Tibetan Plateau probably dates back to 7300 years ago, when the rangelands were also utilized for cultivation. Over time, a complete system of herding and rangeland management developed. In recent years, however, the rangeland contract policy and nomadic settlement project have reduced the mobility of herds through the decollectivization of the rangeland. This process has destroyed the traditional nomadic lifestyle and caused difficulties, forcing the herders to adapt to new ways. This paper considers 3 issues: (1) the implementation of the contract policy and the settlement project—2 important policies that have caused the decollectivization of rangeland on the Qinghai–Tibetan Plateau; (2) the effects of the 2 policies on herding at 2 sites; and (3) the adaptive strategies employed by herders against the constraints of the policies. The study incorporates a literature review, fieldwork, key-person interviews, and focus group discussions. Community-based self-management of the rangeland appears to be the best strategy for herders. Policies such as group herding can help herders increase herd mobility, which is crucial for sustainably raising livestock on the Qinghai–Tibetan Plateau. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
173. Adaptive Strategies of Structures that Enhance Invasion in Sicyos angulatus.
- Author
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Fengxi ZHAO, Shihui YAN, Meihui LI, Xinyu LIU, Xinwan ZHANG, Yong CAO, and Hong ZHAO
- Subjects
- *
SMART structures , *CLIMBING plants , *PLANT development , *PLANT communities , *INVASIVE plants , *POLLINATORS - Abstract
Sicyos angulatus may become an extremely dangerous invasive plant depending on its ability to naturalize and outcompete other species. To further understand the adaptive strategies of structures that could enhance its competitiveness, field surveys and experimental studies were conducted in plant communities where invasion may occur. The results showed that multistage branches of tendrils ensured that the plants could climb higher to strive for better photosynthetic opportunities. The single fleshy fruit of the infructescence was carpeted with slender white spines on which dense barbs were arranged, which could defend fruits against herbivores and contributed to long-distance dispersal. There would be beaklike lignified thorn forming to continue spreading when most of the barbed spines fell off during the fruit season. Rootstock was found in this herbaceous vine, which could accumulate various storage substances during development and helped the plants spread in harsh conditions. Moreover, the discovery of ants as new pollinators enriched the pollination system of S. angulatus, which greatly enhanced pollination efficiency. Above all, we conclude that this species has diverse adaptive strategies and a strong invasive capacity. It is urgent to find some way to slow or even stop its invasion effectively. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
174. Vulnerability and adaptive strategies of smallholder farmers to seasonal fluctuations in production and marketing in southwest Nigeria.
- Author
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Oluwatayo, Isaac B.
- Subjects
PROBIT analysis ,FARMERS ,AGE distribution ,MARKET prices ,LIVING conditions - Abstract
Smallholder farmers in sub-Saharan Africa produce the bulk of the food consumed by inhabitants of these countries despite their poor working conditions in terms of access to inputs, improved technology and basic infrastructure. Climate change, unstable micro- and macroeconomic conditions coupled with the rising poverty situation have even made the matter worse for them. This has aggravated their living conditions and dwindling interest in agriculture. In Nigeria, agriculture remains the largest employer of labour providing livelihood for over 70% of the population. The paper relied on primary data collected through structured questionnaire on a random sample of 360 smallholder farmers in southwest Nigeria using a multistage sampling procedure. The data were collected in March and September, being the peak of dry and raining seasons in the country. Respondents' distribution by age indicates average age to be 45 years with about one-third having tertiary education and 36% having no formal education. Also, about two-thirds were estimated to be vulnerable going by the vulnerability benchmark constructed using the consumption expenditure data collected in both seasons. A probit analysis employed shows that respondents' age, gender, years of formal education, household size, membership of cooperatives, access to inputs, access to extension services, distance to markets and price situation are major determinants of vulnerability to seasonal fluctuations in production and marketing in the study area. [ABSTRACT FROM AUTHOR]
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- 2019
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175. Stress response and tolerance mechanisms of ammonia exposure based on transcriptomics and metabolomics in Litopenaeus vannamei.
- Author
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Xiao, Jie, Li, Qiang-Yong, Tu, Jia-Peng, Chen, Xiu-Li, Chen, Xiao-Han, Liu, Qing-Yun, Liu, Hong, Zhou, Xiao-Yun, Zhao, Yong-Zhen, and Wang, Huan-Ling
- Subjects
WHITELEG shrimp ,LIPID metabolism ,AMINO acid metabolism ,AMMONIA ,METABOLOMICS ,ENERGY metabolism ,TRICARBOXYLIC acids - Abstract
Ammonia, one of the major limiting environment factors in aquaculture, may pose a threat to the shrimp growth, reproduction and survival. In this study, to understand molecular differences of transcriptomic and metabolomic responses and investigate the tolerance mechanisms underlying ammonia stress in Litopenaeus vannamei , ammonia-tolerant family (LV-AT) and ammonia-sensitive family (LV-AS) of these two extreme families were exposed to high-concentration (NH 4 Cl, 46 mg/L) ammonia for 24 h. The comparative transcriptome analysis between ammonia-treated and control (LV-C) groups revealed involvement of immune defense, cytoskeleton remodeling, antioxidative system and metabolic pathway in ammonia-stress response of L. vannamei. Likewise, metabolomics analysis showed that ammonia exposure could disturb amino acid metabolism, nucleotide metabolism and lipid metabolism, with metabolism related-genes changed according to RNA-seq analysis. The comparison of metabolite and transcript profiles between LV-AT and LV-AS indicated that LV-AT used the enhanced glycolysis and tricarboxylic acid (TCA) cycle strategies for energy supply and ammonia excretion to adapt high-concentration ammonia. Furthermore, some of genes involved in the detoxification and ammonia excretion were highly expressed in LV-AT. We speculate that the higher ability of ammonia excretion and detoxification and the accelerated energy metabolism for energy supplies might be the adaptive strategies for LV-AT relative to LV-AS after ammonia stress. Collectively, the combination of transcriptomics and metabolomics results will greatly contribute to incrementally understand the stress responses on ammonia exposure to L. vannamei and supply molecular level support for evaluating the environmental effects of ammonia on aquatic organisms. The results further constitute new sights on the potential molecular mechanisms of ammonia adaptive strategies in shrimps at the transcriptomics and metabolomics levels. • Transcriptomic and metabolomic responses to high-concentration of ammonia were studied in L. vannamei. • Ammonia exposure influences immune defense, cytoskeleton remodeling, antioxidative system and metabolic pathway. • Ammonia exposure disturbs the amino acid metabolism, lipid metabolism and nucleotide metabolism. • Higher ability of excretion and detoxification and accelerated energy metabolism might be related to ammonia tolerance. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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176. Emergence of anti-coordination through reinforcement learning in generalized minority games.
- Author
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Chakrabarti, Anindya S. and Ghosh, Diptesh
- Abstract
In this paper we propose adaptive strategies to solve coordination failures in a prototype generalized minority game model with a multi-agent, multi-choice environment. We illustrate the model with an application to large scale distributed processing systems with a large number of agents and servers. In our set up, agents are assigned responsibility to complete tasks that require unit time. They request servers to process these tasks. Servers can process only one task at a time. Agents have to choose servers independently and simultaneously, and have access to the outcomes of their own past requests only. Coordination failure occurs if more than one agent simultaneously requests the same server to process tasks at the same time, while other servers remain idle. Since agents are independent, this leads to multiple coordination failures. In this paper, we propose strategies based on reinforcement learning that minimize such coordination failures. We also prove a null result that a large category of probabilistic strategies which attempts to combine information about other agents' strategies, asymptotically converge to uniformly random choices over the servers. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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177. ¿Refugios de la fe o sextantes en tiempos seculares? Los nuevos roles de las instituciones religiosas en contextos minoritarios.
- Author
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Moreras, Jordi
- Abstract
Copyright of International Journal of Organizations / Revista Internacional de Organizaciones (RIO) is the property of Analisi Social i Organitzativa grup de recerca and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2019
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178. Improving sustainability of urban drainage systems for climate change adaptation using best management practices: a case study of Tehran, Iran.
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Binesh, Negin, Niksokhan, Mohammad Hossein, Sarang, Amin, and Rauch, Wolfgang
- Subjects
- *
CITIES & towns , *RUNOFF , *CLIMATE change , *SUBURBS , *SUSTAINABILITY , *BEST practices - Abstract
Although the effectiveness of best management practices (BMPs) in reducing urban flooding is widely recognized, the improved sustainability achieved by implementing BMPs in upstream suburban areas, reducing downstream urban floods, is still debated. This study introduces a new definition of urban drainage system (UDS) sustainability, focusing on BMP usage to enhance system performance after adaptation to climate change. Three types of hydraulic reliability index (HRI) plus robustness and improvability indices were used to quantify the potential enhanced sustainability of the system in a changing climate, together with a climate change adaptability index (CCAI). The sustainability of UDS for the safe conveyance of storm-water runoff was investigated under different land-use scenarios: No BMP, BMP in urban areas, and BMP inside and upstream of urban areas, considering climate change impacts. Rainfall–runoff simulation alongside drainage network modelling was conducted using a storm-water management model (US EPA SWMM) to determine the inundation areas for both base-line and future climatic conditions. A new method for disaggregating daily rainfall to hourly, proposed to provide a finer resolution of input rainfall to SWMM, was applied to a semi-urbanized catchment whose upstream runoff from mountainous areas may contribute to the storm-water runoff in downstream urban parts. Our findings confirm an increase in the number of inundation points and reduction in sustainability indices of UDS due to climate change. The results present an increase in UDS reliability from 4% to 16% and improvements in other sustainability indicators using BMPs in upstream suburban areas compared to implementing them in urban areas. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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179. ADAPTIVE, LIMITED-MEMORY BFGS ALGORITHMS FOR UNCONSTRAINED OPTIMIZATION.
- Author
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BOGGS, PAUL T. and BYRD, RICHARD H.
- Subjects
- *
MATHEMATICAL optimization , *NONLINEAR equations , *QUASI-Newton methods - Abstract
The limited-memory BFGS method (L-BFGS) has become the workhorse optimization strategy for many large-scale nonlinear optimization problems. A major difficulty with L-BFGS is that, although the memory size m can have a significant effect on performance, it is difficult to know what memory size will work best. Importantly, a larger m does not necessarily improve performance, but may, in fact, degrade it. There is no guidance in the literature on how to choose m. In this paper, we briefly review L-BFGS and then suggest two computationally efficient ways to measure the effectiveness of various memory sizes, thus allowing us to adaptively choose a different memory size at each iteration. Our overall numerical results illustrate that our approach improves the performance of the L-BFGS method. These results also indicate some further directions for research. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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180. Comparative Study on Resistance of C3 and C4 Xerohalophytes of the Genus Atriplex to Water Deficit and Salinity.
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Rakhmankulova, Z. F., Shuyskaya, E. V., Voronin, P. Yu., and Usmanov, I. Yu.
- Subjects
- *
ATRIPLEX , *SALINITY , *MULTIPLE correspondence analysis (Statistics) , *POTASSIUM ions , *POLYETHYLENE glycol - Abstract
The C3 species Аtriplex verrucifera M. Bieb and the C4 species A. tatarica L. were compared in terms of their photosynthetic activities, plant growth rates, and the content of water, Na+, K+, and proline under water deficit and salinity conditions caused by polyethylene glycol (PEG) and NaCl solutions having equal osmotic potentials (–0.6 MPa). Nonstressed A. tatarica plants accumulated twofold larger biomass compared with A.verrucifera; they also featured a tenfold higher amount of proline and were superior in photosynthetic water use efficiency. Compared to A. tatarica, А. verrucifera plants were more resistant to osmotic stress: they exhibited normal growth rates at low osmotic potential of the medium, retained their water and K+ content in tissues, and preserved the rates of dark respiration and water use efficiency. Despite the attribution to C4 plants, A. tatarica showed low resistance to PEG-induced osmotic stress and accumulated significant amounts of proline, whereas the C3 species accumulated proline only under excess of Na+, i.e., under salinity. The principal component analysis of various parameters (content of proline, water, K+, Na+, and the K+/Na+ ratio) revealed the factors significant for adaptation of the examined plant species to water stress. In A. tatarica, the main role belongs to proline, Na+, and water, whereas this role is played by Na+ and proline in А. verrucifera. Potassium ions proved to be an indispensable component of adaptive mechanisms in both plant species. Under salt stress, the C3 species accumulated proline, which served as an antioxidant and osmoprotector and also balanced the cell osmotic potential. The examined C4 species accumulated the osmolyte proline under PEG-induced water stress. The results provide evidence that representatives of the genus Atriplex employ different strategies of adapting to water deficit and salinity. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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181. CLIMATE CHANGE THREAT: WHERE ARE WE HEADING?
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ROTARU, Ciprian and DUMITRACHE, Victor-Marian
- Subjects
- *
CLIMATE change , *HUMANITY , *SUSTAINABLE development - Abstract
Our century is facing a major challenge, with implications that can endanger the existence of humanity - climate change. If hundreds of years ago, these climate changes were perceived as a reaction of nature, now, almost 300 years after the industrial revolution, part of humanity's activities in the struggle for survival are those that generate climate change. The challenges of climate change have become so complex that they require research and understanding of the phenomena in order to have an effective approach and implement the appropriate measures needed to mitigate the negative effects of the consequences of climate change. Agricultural is the one that generates climate change through GHG emissions, but at the same time is the sector most affected by these changes. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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182. Adaptive strategies of smaller foreign investors in the Russian agricultural sector: identity, narrative and performance.
- Author
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Lander, Christopher D.
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FOREIGN investments ,AGRICULTURE finance ,AGRICULTURE - Abstract
This paper utilises a qualitative narrative analysis approach to examine smaller foreign investors operating within the Russian agricultural sector as private farmers: the foreign versions of the krestyansko-fermerskiye khoziaistva (peasant farms) that were the early focus of agrarian reform. With difficulty experienced by foreign investment in Russian agriculture, and with the Putin administration shifting its focus to larger scale agriculture, interest lies in the fate of these smaller foreign investors, set in the broader question of: 'Is there really a future for smaller foreign investors in Russia?' The investors were aligned along a performance and narrative spectrum, and the construction of their identities - guided by their adaptive processes on the 'Turnerian' frontier - were found to shape their business conduct, and interactions with labour forces and regional authorities. Negative prejudgment of the labour force existed amongst the investors - with associated negative notions of trust, inefficiency, laziness, morality, and sexual deviancy - and they were involved in explicit or ambiguous forms of gift-gifting, drawing parallels to Soviet blat behaviour. This paper concludes that despite efforts to construct identity, the narratives of the investors betrayed themselves in certain aspects, with elements of 'undoing' in the identity process. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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183. Adaptive synchronization of fractional-order complex-valued coupled neural networks via direct error method
- Author
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Bibo Zheng and Zhanshan Wang
- Subjects
Adaptive strategies ,Computer simulation ,Artificial neural network ,Artificial Intelligence ,Computer science ,Cognitive Neuroscience ,Synchronization (computer science) ,Order (ring theory) ,Value (computer science) ,Node (circuits) ,Topology ,Connected dominating set ,Computer Science Applications - Abstract
In this paper, without dividing the fractional-order complex-valued coupled neural networks (FCVCNNs) into two real-valued systems, the problem of synchronization is investigated for FCVCNNs with time-varying coupling strength. To achieve synchronization, by updating coupling strength, two feasible adaptive protocols are designed, 1) a fractional-order adaptive strategy depending on global information; 2) a fractional-order adaptive law relying on the local information based on the connected dominating set theory. Additionally, instead of making the weighted average technique or the solution of the isolated node equation as synchronization reference value, direct error method is adopted to realize synchronization, which offers a flexible way in analysis of FCVCNNs. At last, a numerical simulation is provided to illustrate the validity of theoretical results.
- Published
- 2022
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184. Cluster Synchronization of Complex Networks Under Denial-of-Service Attacks With Distributed Adaptive Strategies
- Author
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Dan Ye and Dan Liu
- Subjects
Lyapunov function ,Adaptive strategies ,Control and Optimization ,Computer Networks and Communications ,Computer science ,business.industry ,Denial-of-service attack ,Complex network ,Network topology ,symbols.namesake ,Coupling (computer programming) ,Control and Systems Engineering ,Signal Processing ,Synchronization (computer science) ,symbols ,Cluster (physics) ,business ,Computer Science::Cryptography and Security ,Computer network - Abstract
This paper studies the security cluster synchronization of complex networks under denial-of-service (DoS) attacks. First, an adaptive strategy is designed to update coupling weights and gains for ensuring cluster synchronization, even if the control channels of complex networks suffer from DoS attacks. This security strategy is developed in a distributed framework, in which only local information is utilized instead of any global information, such as network topology and the number of nodes. Then, the security cluster synchronization analysis against DoS attacks is extended to the case where only partial coupling weights on edges are updated. By constructing the suitable Lyapunov functions with exponential terms, the corresponding security cluster synchronization conditions are presented, and the DoS attack duration ratio that system can tolerate is also obtained. At last, a network composed of Chuas circuits is employed to validate the efficiency of the derived methods.
- Published
- 2022
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185. Farmers' Adaptation to Climate Change in Pakistan: Perceptions, Options and Constraints.
- Author
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Salman, Aneel, ul Husnain, Muhammad Iftikhar, Jan, Inayatullah, Ashfaq, Muhammad, Rashid, Mudassar, and Shakoor, Usman
- Subjects
- *
CLIMATE change , *PHYSIOLOGICAL adaptation , *MICROIRRIGATION , *FARMERS , *CULTIVARS , *HIGH-income countries - Abstract
Agriculture in Pakistan is extremely vulnerable to climate change. Adaptation of the agriculture sector is imperative as it contributes 20 percent to the GDP and supports directly or indirectly about 68 percent of the population for their sustenance. Farmers' perception about climate change, current adaptation measures, and decision-making process is important for farmers' successful adaptation strategies. Using data of 205 conventional farmers from three district of Punjab province, this study provides insights into farmers' perceptions about climate change, on-going adaptation practices, and constraints to various adaption strategies. We found that majority of the farmers do not consider climate change as a potential threat to agriculture; therefore, they do not make any intentional efforts to change their farming practices. However, a few adaptation measures like use of different crop varieties, tree planting, and drip irrigation methods are prevalent in the research area. The major hurdles that farmers perceived in adaptation are limited access to credit, lack of access to information, and institutional support. As expected, no significant variations were found across districts in the characteristics of respondents (age and income) that can affect their perceptions, their adaptation strategies, and obstacles faced in adaptation. The results of the study need to be interpreted with caution, as we did not focus on other determinants like education, role of media, and government policies that can affect farmers' choices to adopt climate resilient farming practices. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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186. Family Businesses and Adaptation: A Dynamic Capabilities Approach.
- Author
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Duarte Alonso, Abel, Kok, Seng, and O’Shea, Michelle
- Subjects
FAMILY-owned business enterprises ,FAMILY adaptability ,ENTREPRENEURSHIP ,STRATEGIC planning - Abstract
The main objective of this research was to propose a framework centred on the dynamic capabilities approach, and to be applied in the context of family businesses’ adaption to their changing business environment. Data were gathered through interviews with ten FBs operating in Western Australia. Based on the findings, the clusters of activities, sensing, seizing, and transforming emerged as key factors for firms’ adaptation, and were reinforced by firms’ open culture, signature processes, idiosyncratic knowledge, and valuable, rare, inimitable and non-substitutable attributes. Thus, the usefulness of the proposed framework was confirmed. Implications and future research opportunities are presented. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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187. Analysis of reproduction success, growth and milk trajectories and response to nutritional challenge in two Alpine goat lines selected on divergent longevity.
- Author
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Amiri, S., Puillet, L., Huau, C., Fassier, T., Rupp, R., and Friggens, N.C.
- Abstract
• Two Alpine goat lines were selected for divergent functional longevity. • Reproduction, and milk and BW trajectories were evaluated in both lines. • The deviations in performance trajectories in a challenging environment were explored. • Different allocation strategies were found between the selected lines over time. • Functional longevity may be an indicator of adaptive capacity selection in goat. This study aims to investigate whether the variation in reproduction success, growth, and milk trajectories is associated with different adaptive strategies in the short term (response to an acute nutritional challenge), using two Alpine goat lines. A total of 382 Alpine goats (179 low longevity (low_LGV) and 203 high longevity (high_LGV)), selected for divergent functional longevity from a commercial population, were monitored for 4 years and recorded for BW, reproduction and milking performance. Every year, an average of fifty primiparous goats were exposed to a 2-d nutritional challenge in early lactation. A polynomial model was used to analyse the lifetime trajectory of lactation and BW. A piecewise model was used to analyse the individual milk yield and responses of milk components to the nutritional challenges. The statistical analysis revealed that the two lines had a similar performance for total milk yield in the first lactation, BW at birth and at first kidding, litter size and weight, kidding interval and interval from the first insemination to conception. BW trajectories revealed that low_LGV goats had a greater BW in pregnancy but then lost more weight in early lactation compared to high_LGV goats, which showed a greater BW after kidding. Milk trajectories showed that the high_LGV goats had a higher initial milk yield, an earlier but less marked lactation peak and more persistency in milk production in late lactation than low_LGV goats. Except for milk protein content, quite similar response and recovery profiles of milk yield and milk fat content were observed during the challenge for both lines. The response to the challenge was positively correlated to the initial level of milk production in early lactation but negatively correlated with milk production decline after the peak. This finding suggests that the low_LGV goats were more adapted to allocate resources to meet an expected physiological change such as gestation and lactation. However, high_LGV goats allocate more than low_LGV goats for structural mass and may better cope with an unexpected environmental change such as nutritional deficit. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
188. Using the global value chain framework to analyse and tackle global environmental crises
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Valentina De Marchi and Gary Gereffi
- Subjects
Upgrading ,Economics and Econometrics ,Governance ,Climate crisis, Adaptive strategies, Global value chains, Upgrading, Governance, Sustainability ,Sustainability ,Global value chains ,Adaptive strategies ,Climate crisis ,Business and International Management ,General Economics, Econometrics and Finance ,General Business, Management and Accounting - Abstract
Climate crises are being experienced all over the world and appear to be accelerating as “extreme weather” events become the “new normal.” In today’s world economy, where trade and production activities are internationally dispersed and prone to disruptions, the global value chain (GVC) framework provides a systematic approach to understand and combat environmental crises and to advance sustainable development options across global, regional, and local scales. A vast “implementation deficit” characterizes sustainability efforts to date. The GVC framework incorporates firm and policymaker perspectives in a multistakeholder approach that offers multiple building blocks for a progressive environmental agenda, including: a multi-actor perspective to define sustainability; measuring it across diverse geographic scales; analysis of both environmental upgrading and downgrading; distinguishing motivations, actions, and outcomes when assessing environmental performance; viewing GVC resilience in terms of the interplay of economic and environmental forces; and highlighting how context matters in analyzing national, industry, and geopolitical factors.
- Published
- 2023
189. Social network and institution-based strategy research
- Author
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Sonja Opper
- Subjects
Adaptive strategies ,Relative value ,Knowledge management ,Social network ,SOCIAL NETWORK ,business.industry ,Strategy and Management ,media_common.quotation_subject ,Economics, Econometrics and Finance (miscellaneous) ,Globe ,Sample (statistics) ,Sketch ,CHINA ,medicine.anatomical_structure ,Work (electrical) ,INSTITUTION-BASED RESEARCH ,Institution ,medicine ,INSTITUTION-BASED RESEARCH, SOCIAL NETWORK, STRATEGY, METHOD, CHINA ,STRATEGY ,METHOD ,Business and International Management ,business ,media_common - Abstract
Almost two decades ago, Asia Pacific Journal of Management, 19(2/3): 251–267 Peng (2002) called attention to the promise of institution-based strategy research. The puzzle was to explain differences in strategies around the globe. Building on the work accomplished so far, I ask: Can institution-based strategy succeed when embedded in inappropriate social networks? Institutions and networks are usually studied as separate phenomena, yet each also defines the capabilities of the other. Institutions shape social network contacts and structures because institutions define opportunities for affiliation and the relative value of distinct contacts and network structures. At the same time, social networks shape institutions and organizations’ capabilities for institutional innovation. Thus, the social network in which a manager or organization is embedded can either amplify or counteract success in implementing institution-based strategy. After I review the co-constitutional nature of institutions and networks and discuss a number of sample studies using China as a productive research site, I sketch questions that need to be answered to more tightly integrate network behavior into institutional strategy research, and discuss four emerging areas of research into how network-strategy fit affects performance: (1) network fit to adaptive strategy, (2) network fit to change strategy, (3) institutional dynamics and network-strategy fit, and (4) institutional distance and network-strategy fit.
- Published
- 2023
190. Problem-Focused Coping Strategies Used by Victims of Gender Violence Across the Stages of Change
- Author
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Alicia Puente-Martinez, Darío Páez-Rovira, and Silvia Ubillos-Landa
- Subjects
Adult ,Adaptive strategies ,Adolescent ,Sociology and Political Science ,Abusive relationship ,Intimate Partner Violence ,Gender-Based Violence ,Affect (psychology) ,Developmental psychology ,Gender Studies ,Young Adult ,Adaptation, Psychological ,Humans ,Survivors ,music ,Aged ,music.instrument ,Gender violence ,Stage of change ,Problem focused ,Middle Aged ,Transtheoretical Model ,Domestic violence ,Female ,sense organs ,Psychology ,Law - Abstract
This study compares the problem-focused emotion regulation strategies used by 200 female survivors of intimate partner violence (age: M = 40.16, SD = 11.27, 18 – 66 years) to cope with violence throughout various stages of change (SOC). It examines the relationship between problem-focused coping strategies and positive and negative affect, and the impact of these variables on the different SOC. Results suggest that victims differ and are flexible in the use of strategies throughout the various SOC. During the initial stages, victims tend to use passive/maladaptive behaviors that hamper change, while in the later stages they use more active/adaptive strategies to leave the abusive relationship.
- Published
- 2021
- Full Text
- View/download PDF
191. Projected impacts of climate change on snow leopard habitat in Qinghai Province, China
- Author
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Bo Wu, Wei Cong, Charlotte E. Hacker, Ye Li, Jia Li, Lixiao Jin, Diqiang Li, Gang Li, Yadong Xue, Yuguang Zhang, and Yu Zhang
- Subjects
Ecology ,vulnerability ,Climate change ,National park ,suitable habitat ,habitat corridors ,adaptive strategies ,Geography ,Habitat ,Snow leopard ,Physical geography ,China ,Ecology, Evolution, Behavior and Systematics ,Research Articles ,QH540-549.5 ,Nature and Landscape Conservation ,Research Article - Abstract
Assessing species’ vulnerability to climate change is a prerequisite for developing effective strategies to reduce emerging climate‐related threats. We used the maximum entropy algorithm (MaxEnt model) to assess potential changes in suitable snow leopard (Panthera uncia) habitat in Qinghai Province, China, under a mild climate change scenario. Our results showed that the area of suitable snow leopard habitat in Qinghai Province was 302,821 km2 under current conditions and 228,997 km2 under the 2050s climatic scenario, with a mean upward shift in elevation of 90 m. At present, nature reserves protect 38.78% of currently suitable habitat and will protect 42.56% of future suitable habitat. Current areas of climate refugia amounted to 212,341 km2 and are mainly distributed in the Sanjiangyuan region, Qilian mountains, and surrounding areas. Our results provide valuable information for formulating strategies to meet future conservation challenges brought on by climate stress. We suggest that conservation efforts in Qinghai Province should focus on protecting areas of climate refugia and on maintaining or building corridors when planning for future species management., Climate change challenges current snow leopard conservation efforts; identify refugia and corridors under climate change for species; and provide adaptation strategies to mitigate climate‐related threats to the species.
- Published
- 2021
192. Leaf Anatomy of Xylopia aromatica (Lam.) Mart. (Annonaceae) occurring in a rocky savannah in the Brazilian Amazonian
- Author
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Priscila Fernanda Simioni, Marcos José Gomes Pessoa, Maialu Antunes Cardoso, Fabiana Ferreira Cabral, Soraia Oliveira Teixeira, and Ivone Viera da Silva
- Subjects
Ecological anatomy ,adaptive strategies ,environmental conditions ,xerophytes. ,Biology (General) ,QH301-705.5 ,Microbiology ,QR1-502 - Abstract
Savannas of the Amazon Region of Mato Grosso State have an unique ecological identity due to the complexity of the Cerrado-Amazon transition region, their geographical isolation and the physical-chemical properties of the soil. This study aimed to characterize the leaf anatomy of Xylopia aromatica, and to identify potential adaptive traits to the xeric environment. We collected adult leaves from X. aromatica from a Amazonian savannah located in the Nova Canãa do Norte city, Mato Grosso. The leaves were fixed and stored in 70% ethanol. Cross sections were obtained by free hand with the aid of a razor blade, stained with astra blue and basic fuchsin, and mounted on histological slides. Characters considered adaptive: thick cuticle, epidermal cells with thickened walls, the presence of silica in the epidermis, trichomes, hypostomatic leaves, stomata on the same level as the other epidermal cells, presence of hypodermis, and dorsiventral mesophyll with palisade parenchyma occupying more than 50%. The anatomical characters presented are of great importance for the establishment and development of X. aromatica in xeric environments. They contribute to the protection of the leaves from many biotic and abiotic factors to which they are subjected, thus ensuring the species survival in the savannic environment.
- Published
- 2018
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193. A singular perturbation based adaptive strategy for bounded controller design in feedback linearizable systems
- Author
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Madan Mohan Rayguru, Mohan Rajesh Elara, and Balakrishnan Ramalingam
- Subjects
Controller design ,Singular perturbation ,Adaptive strategies ,Control and Systems Engineering ,Computer science ,Control theory ,Bounded function ,Signal Processing ,Electrical and Electronic Engineering - Published
- 2021
- Full Text
- View/download PDF
194. ADAPTIVE STRATEGIES EMPLOYED BY THE MICE SECTOR IN RESPONSE TO COVID-19
- Author
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Refiloe Julia Lekgau, Tembi Maloney Tichaawa, and South Africa Economics
- Subjects
mice tourism ,south africa ,Adaptive strategies ,Geography (General) ,Coronavirus disease 2019 (COVID-19) ,virtual events ,Computer science ,business.industry ,Geography, Planning and Development ,Machine learning ,computer.software_genre ,resilience theory ,covid-19 ,Earth and Planetary Sciences (miscellaneous) ,Geography. Anthropology. Recreation ,G1-922 ,Artificial intelligence ,business ,computer - Abstract
COVID-19 has brought to the fore drastic and transformative changes to MICE tourism. The current study therefore sought to examine the adaptive responses employed by the MICE sector of South Africa to survive and maintain business continuity during the COVID-19 pandemic. Adopting a qualitative research design, 19 representatives of various subsectors of the MICE industry (including organisers, suppliers, and associations) were interviewed. The data reveals that the immediate strategies implemented by many MICE organisations involved the reevaluation of their operational costs. Moreover, the study found that the sector has readjusted its business models to include virtual events in order to ensure recovery and resilience in light of the pandemic. The study argues the importance of understanding adaptive strategies as broadening theory on tourism and crises (specifically to the MICE sector) as well as understanding the process of sector resilience post-COVID-19.
- Published
- 2021
195. A novel hybrid particle swarm optimization using adaptive strategy
- Author
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Tong Wang, Kuangrong Hao, Chunli Jiang, Lei Chen, and Rui Wang
- Subjects
Adaptive strategies ,Mathematical optimization ,education.field_of_study ,Information Systems and Management ,Optimization problem ,Computer science ,Population ,Chaotic map ,Particle swarm optimization ,Computer Science Applications ,Theoretical Computer Science ,Artificial Intelligence ,Control and Systems Engineering ,Position (vector) ,Substitution mechanism ,education ,Software ,Premature convergence - Abstract
Particle swarm optimization (PSO) has been employed to solve numerous real-world problems because of its strong optimization ability and easy implementation. However, PSO still has some shortcomings in solving complicated optimization problems, such as premature convergence and poor balance between global exploration and local exploitation. A novel hybrid particle swarm optimization using adaptive strategy (ASPSO) is developed to address associated difficulties. The contribution of ASPSO is threefold: (1) a chaotic map and an adaptive position updating strategy to balance exploration behavior and exploitation nature in the search progress; (2) elite and dimensional learning strategies to enhance the diversity of the population effectively; (3) a competitive substitution mechanism to improve the accuracy of solutions. Based on various functions from CEC 2017, the numerical experiment results demonstrate that ASPSO is significantly better than the other 16 optimization algorithms. Furthermore, we apply ASPSO to a typical industrial problem, the optimization of melt spinning progress, where the results indicate that ASPSO performs better than other algorithms.
- Published
- 2021
- Full Text
- View/download PDF
196. Regulation adaptive strategy and bank efficiency: A network slacks-based measure with shared resources
- Author
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Qingyuan Zhu, Linlin Zhao, and Lin Zhang
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050210 logistics & transportation ,Measure (data warehouse) ,Adaptive strategies ,021103 operations research ,Information Systems and Management ,General Computer Science ,business.industry ,Process (engineering) ,05 social sciences ,Big data ,0211 other engineering and technologies ,02 engineering and technology ,Management Science and Operations Research ,Industrial and Manufacturing Engineering ,Shared resource ,Modeling and Simulation ,0502 economics and business ,Data envelopment analysis ,Profitability index ,Business ,Productivity ,Industrial organization - Abstract
Banks have two primary strategies for adapting to a regulation change in the era of big data which can be characterized as natural disposability and managerial disposability. Natural disposability implies a negative strategy by which a bank attempts to decreases its vector of inputs to decrease undesirable outputs. In contrast, managerial disposability indicates a positive strategy by which a bank considers a regulation change as an opportunity and adapt the regulation change by utilizing big data technology. The operational process of a bank can be decomposed into a productivity stage and a profitability stage. Furthermore, the operation costs, a shared resource, can be used to characterize natural disposability and managerial disposability. Based on natural disposability and managerial disposability, this paper proposes two network models to estimate the efficiencies of banks. To test their practical implications, the proposed models were applied to examine the efficiencies of Chinese commercial banks in the period 2014−2018. Our key findings are as follows. (1) There exist great disparities in the inefficiencies between two adaptive strategies. The inefficiencies are primarily driven by the profitability stage under natural disposability, whereas the inefficiencies are equally attributed to both stages under managerial disposability. (2) The efficiency differences among different types of banks are insignificant under natural disposability but are significant under managerial disposability. (3) Joint-stock commercial banks are more oveall efficient than state-owned commercial banks, city commercial banks and rural commercial banks, while state-owned commercial banks show worst practice for overall efficiency and profitability stage efficiency.
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- 2021
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197. ПСИХОЛОГІЧНІ СТРАТЕГІЇ ПОДОЛАННЯ ПРОФЕСІЙНОГО СТРЕСУ У ФАХІВЦІВ
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Coping (psychology) ,Social support ,Stress management ,Adaptive strategies ,Stressor ,Applied psychology ,Occupational stress ,Set (psychology) ,Psychology ,Constructive - Abstract
Introduction. The problem of overcoming professional stress is an important part of both individual and corporate responsibility. The founders of the theory of stress assessment and its overcoming R. Lazarus and S. Folkman consider overcoming as an interacting process between the individual and his environment, as an effort made by the individual to harmonize the requirements of the environment with the support of homeostasis. Thus, the use of adaptive strategies to overcome professional stress is aimed at increasing resources, personal adaptive potential, which leads to the improvement of the subjective state of the individual and professional and life well-being. Purpose. Highlight the results of the analysis of scientific views of domestic and foreign scientists who consider the main strategies for overcoming occupational stress. Methods. Theoretical (analysis of scientific literature, generalization of the received information and its systematization). Originality. Overcoming strategies are a set of measures and efforts, cognitive or behavioral, aimed at finding a solution to the problem and calming the emotional reaction, which in some cases can be excessive and cause anxiety. Overcoming strategies are the subject of many scientific papers, which have developed various proposals for the most acceptable way to classify them in terms of functions and efficiency. As a result of scientific research, it has been established that each person has his or her own constructive and destructive strategies for overcoming stress, based on life experience, physiological, psychological and social resources. The main types of coping strategies are identified: assessment-oriented, problem-oriented, emotion-oriented. Some scholars question the possibility of categorization because different coping strategies are not independent of each other. All stress management strategies have been found to be helpful. Conclusions. It is established that occupational stress is a stressful condition that occurs in professionals under the influence of external and internal stesogenic factors, conditions and features of professional activity and is manifested by changes in cognitive, social, emotional, motivational, behavioral and professional spheres of personality. It is an imbalance between the requirements of conditions and features of professional activity and abilities, individual psychological characteristics, subjective attitude to stressors and skills of a specialist to choose an individual constructive or destructive coping strategy to overcome it. The three most common coping strategies have been identified: assessment, problem, and emotion. Evaluation-oriented strategies modify thought processes. Problem-oriented strategies are aimed at overcoming the causes or problems that caused stress. Emotionally-oriented strategies relate to self-regulation of the emotional-volitional sphere. It is determined that coping strategies can be constructive (adaptive) or destructive (maladaptive). Constructive coping strategies successfully reduce stress levels and provide positive feedback. Destructive strategies for coping with stress can be successful in managing or reducing stress, but the result is dysfunctional and unproductive. It was found that social support - emotional, informational, spiritual, sociable, material - plays a significant role in strategies for overcoming professional stress. Prospects for further research are to justify, develop and test a psycho-correction program for a specific contingent of specialists. Key words: occupational stress; psychological strategies; overcoming; specialists.
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- 2021
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198. Vulnerability and Responses of Smallholder Farmers to Climate Change Effects in Semiarid Areas of Bahi and Kongwa Districts, Tanzania
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Helena Elias Myeya
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Adaptive capacity ,Adaptive strategies ,biology ,Land use ,climate change effects ,Vulnerability ,food and beverages ,Climate change ,challenges ,Intercropping ,biology.organism_classification ,semiarid area ,Tanzania ,Trend analysis ,Geography ,sense organs ,Socioeconomics - Abstract
This study examined the vulnerability and responses of smallholder farmers to climate change effects in Semiarid Areas of Bahi and Kongwa Districts. A total of 366 household heads were involved in this study. The study employed questionnaire, interviews and documentary review as data collection techniques. Archival data for temperature, rainfall and crop yields were collected for trend analysis. Descriptive and inferential statistics were used to analyse quantitative data, content analysis was employed to analyse qualitative data. Simple linear trend analysis and Mann Kendall were used to establish trends. The findings indicate that smallholder farmers in the study area have noted reduced rainfall, increased temperature and reduced production as indicators of climate change. Results from archival data indicate insignificant decline of rainfall, significant increase of temperature and insignificant decline of crop yields at 5% significance level. As a response to these changes, smallholder farmers reported to use improved crop varieties, change planting dates, use intercropping, out-migrating and change land use practices. Several challenges were reported to hinder effective adaptation including inadequate capital, limited soft loans, limited weather information and deficient extension services. It is concluded that the climate is changing in the study area calling for strengthening farmers’ adaptive capacity. Keywords: Adaptive strategies, climate change effects, challenges, semiarid area, Tanzania.
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- 2021
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199. Phosphorus starvation response dynamics and management in plants for sustainable agriculture
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Rajesh Kumar, Suvajit Basu, and Rajat M Srivastava
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Adaptive strategies ,business.industry ,Agroforestry ,Phosphorus ,chemistry.chemical_element ,Plant Science ,engineering.material ,Biology ,chemistry ,Agriculture ,Sustainable agriculture ,engineering ,Fertilizer ,Agricultural productivity ,Soil fertility ,business ,Surface runoff ,Agronomy and Crop Science ,Biotechnology - Abstract
Phosphorus (P) is an essential macronutrient required for the survival and reproduction of all living organisms. Its inorganic form (Pi) is taken up by the roots to support plant growth and development, and its availability directly determines agricultural productivity. The primary source of P replenishment in agriculture is chemical phosphate (Pi) fertilizers. While application of Pi-fertilizers to croplands ensures high yield agriculture, its intensive use leads to several environmental implications, including loss of soil fertility and pollution of water bodies with runoff fertilizer. Global non-renewable P-reserves are finite and would last for only a few hundred years. Therefore, a holistic approach is needed to combine Pi-use efficient germplasm with the targeted fertilization, agronomically superior fertilizer formulations for better P-management. The latest technologies to reclaim Pi from alternative sources need to be explored. In the present review, we first outline the challenges and environmental consequences of Pi-intensive fertilization, followed by plants' response and adaptive strategies to Pi starvation. Next, we discuss the role of microbes and Pi-nanofertilizer to plant Pi nutrition. Finally, a few cutting-edge technologies and innovative solutions available for reclaiming Pi from waste are argued.
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- 2021
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200. Photosynthetic and morphological traits control aquatic plant distribution according to light stress
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Gudrun Bornette, C. Romestaing, F. Arthaud, J. Toury, Centre Alpin de Recherche sur les Réseaux Trophiques et Ecosystèmes Limniques (CARRTEL), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Équipe 4 - Écophysiologie, Comportement, Conservation (E2C), Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés (LEHNA), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Chrono-environnement - CNRS - UBFC (UMR 6249) (LCE), Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), and Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)
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Morphology ,0106 biological sciences ,Adaptive strategies ,fungi ,Eutrophication ,15. Life on land ,Photosynthetic efficiency ,Biology ,Photosynthesis ,010603 evolutionary biology ,01 natural sciences ,Macrophyte ,Agronomy ,Animal ecology ,Aquatic plant ,Phytoplankton ,Photic zone ,Shallow lake ,[SDE.BE]Environmental Sciences/Biodiversity and Ecology ,Ecology, Evolution, Behavior and Systematics ,010606 plant biology & botany - Abstract
International audience; The eutrophication of aquatic systems resulting from human activities frequently leads to phytoplankton blooms, which decrease water transparency and therefore limit light availability for aquatic plants. However, several submerged macrophytes are able to grow despite the light competition pressure exerted by phytoplankton. Photosynthetic performance and plant morphology may be key traits allowing plant species to tolerate phytoplankton-induced light limitation in eutrophic systems. The aim of this study was to explore how morphological and photosynthetic traits allow submerged macrophytes to withstand the stress induced by decreased light in eutrophic systems. Morphological and photosynthetic traits were measured in 7 species of submerged macrophytes collected from mesotrophic to hypertrophic shallow lakes (Dombes, Ain, France). Then, we determined whether these traits were related to species occurrence in lakes according to depth and water turbidity. This study highlighted 2 strategies potentially resulting in a trade-off between morphological and photosynthetic traits. The first strategy was tolerance to reduced light and was characterized by a higher investment in leaf area and photosynthetic efficiency (initial slope of photosynthetic activity measured at low light intensities), allowing plants to use low amounts of light energy. The second strategy was to avoid the regions of reduced light and was characterized by a greater investment in vertical growth and maximum photosynthesis at high light intensities. The morphological and physiological traits favoured in turbid lakes corresponded to the avoidance strategy with a low compensation point, allowing plants to grow to the photic zone to reach the water areas where light is at a maximum. Small species exhibiting a light stress tolerance strategy may be maintained in turbid lakes subjected to disturbances, offering a window of opportunity for successful recruitment and reproduction.
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- 2021
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