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4,649 results on '"Chow, C."'

1. Intelligent Charging Control of Power Aggregator for Electric Vehicles Using Optimal Control

Author

ALKAWAZ, A. N., KANESAN, J., MOHD KHAIRUDDIN, A. S., CHOW, C. O., and SINGH, M.

Subjects
battery chargers, electric vehicle, energy consumption, lithium batteries, optimal control, Electrical engineering. Electronics. Nuclear engineering, TK1-9971, Computer engineering. Computer hardware, TK7885-7895
Abstract

Electric Vehicles (EVs) have been shown to be better for the environment since they emit lesser air pollutants compared to fuel-based vehicles. High penetration of EVs in the distribution network contributes to the increment of capital investment in smart grid technologies. This is because EVs' charging operation involves a considerably high level of electricity due to the size of EVs' battery charging period. Poor scheduling of EVs charging operation will lead to an increment in electricity consumption. This will then lead to overloading of distribution network, voltage quality degradation, power loss increment, and dispatch of uneconomical energy sources. Hence, coordinated, and smart charging schemes are vital in order to reduce charging costs. This paper proposes an optimized EV battery charging and discharging scheduling model using an ordinary differential equation (ODE) based on three charging scenarios. The daily charging and discharging schedule of EVs are optimized using optimal control. The result shows that the proposed optimized charging and discharging scheduling model reduces the charging cost up to approximately 50%.

Published
2021
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5. Outcomes of Immunocompromised and Non-immunocompromised Patients in the Intensive Care Unit Differ Depending on COVID Strain

Author

Battu, S., primary, Moore, A.R., additional, Parmer-Chow, C., additional, Roque, J., additional, Pacheco-Navarro, A., additional, Lebold, K., additional, Pienkos, S., additional, O'Donnell, C., additional, Sanchez, P.A., additional, Wilson, J., additional, Levitt, J.E., additional, Collins, W., additional, and Rogers, A., additional

Published
2024
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11. Evaluation of Power Consumption and Application Optimization for Adaptive-Ticks Feature in Linux Kernel

Author

Aljuhni, Abdullah, Yusuf, Shaji, Chow, C. Edward, Akanbi, Oluwatobi, Aljaedi, Amer, Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, and Latifi, Shahram, editor

Published
2021
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12. Computation at the Edge with WebAssembly

Author

Alamari, Jebreel, Chow, C. Edward, Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, and Latifi, Shahram, editor

Published
2021
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13. Efficient Design of Underwater Acoustic Sensor Networks Communication for Delay Sensitive Applications over Multi-hop

Author

Al Guqhaiman, Ahmed, Akanbi, Oluwatobi, Aljaedi, Amer, Chow, C. Edward, Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, and Latifi, Shahram, editor

Published
2021
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14. Automated U.S Diplomatic Cables Security Classification: Topic Model Pruning vs. Classification Based on Clusters

Author

Alzhrani, Khudran, Rudd, Ethan M., Chow, C. Edward, and Boult, Terrance E.

Subjects
Computer Science - Cryptography and Security
Abstract

The U.S Government has been the target for cyber-attacks from all over the world. Just recently, former President Obama accused the Russian government of the leaking emails to Wikileaks and declared that the U.S. might be forced to respond. While Russia denied involvement, it is clear that the U.S. has to take some defensive measures to protect its data infrastructure. Insider threats have been the cause of other sensitive information leaks too, including the infamous Edward Snowden incident. Most of the recent leaks were in the form of text. Due to the nature of text data, security classifications are assigned manually. In an adversarial environment, insiders can leak texts through E-mail, printers, or any untrusted channels. The optimal defense is to automatically detect the unstructured text security class and enforce the appropriate protection mechanism without degrading services or daily tasks. Unfortunately, existing Data Leak Prevention (DLP) systems are not well suited for detecting unstructured texts. In this paper, we compare two recent approaches in the literature for text security classification, evaluating them on actual sensitive text data from the WikiLeaks dataset., Comment: Pre-print of camera-ready copy accepted to the 2017 IEEE Homeland Security Technologies (HST) conference

Published
2017

15. Automated Big Text Security Classification

Author

Alzhrani, Khudran, Rudd, Ethan M., Boult, Terrance E., and Chow, C. Edward

Subjects
Computer Science - Cryptography and Security, Computer Science - Artificial Intelligence, Computer Science - Computation and Language, Computer Science - Computers and Society
Abstract

In recent years, traditional cybersecurity safeguards have proven ineffective against insider threats. Famous cases of sensitive information leaks caused by insiders, including the WikiLeaks release of diplomatic cables and the Edward Snowden incident, have greatly harmed the U.S. government's relationship with other governments and with its own citizens. Data Leak Prevention (DLP) is a solution for detecting and preventing information leaks from within an organization's network. However, state-of-art DLP detection models are only able to detect very limited types of sensitive information, and research in the field has been hindered due to the lack of available sensitive texts. Many researchers have focused on document-based detection with artificially labeled "confidential documents" for which security labels are assigned to the entire document, when in reality only a portion of the document is sensitive. This type of whole-document based security labeling increases the chances of preventing authorized users from accessing non-sensitive information within sensitive documents. In this paper, we introduce Automated Classification Enabled by Security Similarity (ACESS), a new and innovative detection model that penetrates the complexity of big text security classification/detection. To analyze the ACESS system, we constructed a novel dataset, containing formerly classified paragraphs from diplomatic cables made public by the WikiLeaks organization. To our knowledge this paper is the first to analyze a dataset that contains actual formerly sensitive information annotated at paragraph granularity., Comment: Pre-print of Best Paper Award IEEE Intelligence and Security Informatics (ISI) 2016 Manuscript

Published
2016

16. Empathy in adolescents with externalizing problems : reflective function and self-other control

Author

Chow, C.

Subjects
153.8
Abstract

This thesis examines the underlying mechanisms behind empathy deficits in adolescents with externalizing problems. Individual difference in reflective function (RF) and imitative self-other control are investigated in typically developing adolescents and adolescents with externalizing problems. Owing to the lack of measurements of RF for this age group, RF features in adolescents were initially explored using the existing coding scale. This was found unsuitable, and the coding scale was modified in order to capture the unique RF features in adolescents. The relationship between psychological adaptation and callous-unemotional (CU) traits was examined in 95 typically developing adolescents. Results indicated that RF predicted both internalizing and externalizing problems. However, the association between RF and externalizing problems was not significant after the internalizing problems were controlled for. In contrast, CU traits robustly predicted externalizing problems. The thesis then focused on the neural mechanism of related social-cognitive deficits and CU traits. The shared temporal and neural processes between ToM ability and imitative self-other control were examined in typically developing adolescents and adolescents with conduct problems in two studies. In the first study, two theory-of-mind related ERP components; TP450 and LFSW were found in the neural process of imitative self-other control in typically developing adolescents. The other study showed that adolescents with callous-unemotional traits took longer to execute imitative self-other control. Furthermore, adolescents with conduct problems demonstrated an atypical neural response in the early stage of the neural processes involved in imitative control. The implication of RF capacity, imitative self-other control and CU traits in adolescents with externalizing problems were discussed.

Published
2017

25. Diagnostic accuracy of handheld single-lead electrocardiographic devices to detect atrial fibrillation: an examination using more than 30,000 rhythm traces in a randomised control trial

Author

Wong, K C, primary, Nguyen, T N, additional, Marschner, S, additional, Turnbull, S, additional, Indrawansa, A B, additional, Burns, M, additional, White, R, additional, Gopal, V, additional, Von Huben, A, additional, Quintans, D, additional, Trankle, S, additional, Usherwood, T, additional, Kumar, S, additional, Lindley, R I, additional, and Chow, C K, additional

Published
2023
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27. Effect of initial treatment with a single pill containing quadruple combination of quarter doses of blood pressure medicines versus standard dose monotherapy on ambulatory blood pressure indices

Author

Nolde, J, primary, Atkins, E, additional, Marschner, S, additional, Hillis, G S, additional, Chalmers, J, additional, Billiot, L, additional, Nelson, M R, additional, Reid, C M, additional, Hay, P, additional, Burke, M, additional, Jansen, S, additional, Usherwood, T, additional, Rodgers, A, additional, Chow, C K, additional, and Schlaich, M P, additional

Published
2023
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32. Neural Substrates of Inhibitory Control Deficits in 22q11.2 Deletion Syndrome

Author

Montojo, CA, Jalbrzikowski, M, Congdon, E, Domicoli, S, Chow, C, Dawson, C, Karlsgodt, KH, Bilder, RM, and Bearden, CE

Subjects
Biological Psychology, Pharmacology and Pharmaceutical Sciences, Biomedical and Clinical Sciences, Psychology, Basic Behavioral and Social Science, Neurosciences, Clinical Research, Mental Health, Behavioral and Social Science, Brain Disorders, Aetiology, 2.1 Biological and endogenous factors, Neurological, Mental health, Adolescent, Adult, Brain, DiGeorge Syndrome, Female, Humans, Inhibition, Psychological, Magnetic Resonance Imaging, Male, Neuropsychological Tests, Psychiatric Status Rating Scales, Psychomotor Performance, Severity of Illness Index, Young Adult, fronto-basal ganglia, impulsivity, response inhibition, velocardiofacial syndrome, Cognitive Sciences, Experimental Psychology, Biological psychology, Cognitive and computational psychology
Abstract

22q11.2 deletion syndrome (22q11DS) is associated with elevated levels of impulsivity, inattention, and distractibility, which may be related to underlying neurobiological dysfunction due to haploinsufficiency for genes involved in dopaminergic neurotransmission (i.e. catechol-O-methyltransferase). The Stop-signal task has been employed to probe the neural circuitry involved in response inhibition (RI); findings in healthy individuals indicate that a fronto-basal ganglia network underlies successful inhibition of a prepotent motor response. However, little is known about the neurobiological substrates of RI difficulties in 22q11DS. Here, we investigated this using functional magnetic resonance imaging while 45 adult participants (15 22q11DS patients, 30 matched controls) performed the Stop-signal task. Healthy controls showed significantly greater activation than 22q11DS patients within frontal cortical and basal ganglia regions during successful RI, whereas 22q11DS patients did not show increased neural activity relative to controls in any regions. Using the Barratt Impulsivity Scale, we also investigated whether neural dysfunction during RI was associated with cognitive impulsivity in 22q11DS patients. RI-related activity within left middle frontal gyrus and basal ganglia was associated with severity of self-reported cognitive impulsivity. These results suggest reduced engagement of RI-related brain regions in 22q11DS patients, which may be relevant to characteristic behavioral manifestations of the disorder.

Published
2015

33. Disrupted working memory circuitry and psychotic symptoms in 22q11.2 deletion syndrome.

Author

Montojo, CA, Ibrahim, A, Karlsgodt, KH, Chow, C, Hilton, AE, Jonas, RK, Vesagas, TK, and Bearden, CE

Subjects
Brain, Nerve Net, Neural Pathways, Humans, Memory Disorders, DiGeorge Syndrome, Magnetic Resonance Imaging, Sensitivity and Specificity, Reproducibility of Results, Memory, Short-Term, Psychotic Disorders, Adolescent, Adult, Female, Male, Young Adult, Connectome, Spatial Memory, Copy number variation, Endophenotype, Executive function, Psychosis, Velocardiofacial syndrome, Memory, Short-Term, Neurosciences
Abstract

22q11.2 deletion syndrome (22q11DS) is a recurrent genetic mutation that is highly penetrant for psychosis. Behavioral research suggests that 22q11DS patients exhibit a characteristic neurocognitive phenotype that includes differential impairment in spatial working memory (WM). Notably, spatial WM has also been proposed as an endophenotype for idiopathic psychotic disorder, yet little is known about the neurobiological substrates of WM in 22q11DS. In order to investigate the neural systems engaged during spatial WM in 22q11DS patients, we collected functional magnetic resonance imaging (fMRI) data while 41 participants (16 22q11DS patients, 25 demographically matched controls) performed a spatial capacity WM task that included manipulations of delay length and load level. Relative to controls, 22q11DS patients showed reduced neural activation during task performance in the intraparietal sulcus (IPS) and superior frontal sulcus (SFS). In addition, the typical increases in neural activity within spatial WM-relevant regions with greater memory load were not observed in 22q11DS. We further investigated whether neural dysfunction during WM was associated with behavioral WM performance, assessed via the University of Maryland letter-number sequencing (LNS) task, and positive psychotic symptoms, assessed via the Structured Interview for Prodromal Syndromes (SIPS), in 22q11DS patients. WM load activity within IPS and SFS was positively correlated with LNS task performance; moreover, WM load activity within IPS was inversely correlated with the severity of unusual thought content and delusional ideas, indicating that decreased recruitment of working memory-associated neural circuitry is associated with more severe positive symptoms. These results suggest that 22q11DS patients show reduced neural recruitment of brain regions critical for spatial WM function, which may be related to characteristic behavioral manifestations of the disorder.

Published
2014

38. Process Evaluation Results of QUality Improvement for Effectiveness of Care for People Living With Heart Disease (QUEL):A Cluster Randomised Controlled Data-driven Quality Improvement Trial to Improve Cardiovascular Disease Care in Australian Primary Care Practices

Author

Hafiz, N., primary, Hyun, K., additional, Tu, Q., additional, Knight, A., additional, Hespe, C., additional, Chow, C., additional, Briffa, T., additional, Gallagher, R., additional, Reid, C., additional, Hare, D., additional, Zwar, N., additional, Woodward, M., additional, Jan, S., additional, Atkins, E., additional, Laba, T., additional, Halcomb, E., additional, Johnson, T., additional, Manandi, D., additional, Usherwood, T., additional, and Redfern, J., additional

Published
2023
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40. Provision of Primary Care Services and Cardioprotective Medication Prescriptions in Patients With Cardiovascular Diseases and Cancer: A Cross-sectional Study

Author

Tu, Q., primary, Hyun, K., additional, Hafiz, N., additional, Knight, A., additional, Hespe, C., additional, Chow, C., additional, Briffa, T., additional, Gallagher, R., additional, Reid, C., additional, Hare, D., additional, Zwar, N., additional, Woodward, M., additional, Jan, S., additional, Atkins, E., additional, Laba, T., additional, Halcomb, E., additional, Usherwood, T., additional, and Redfern, J., additional

Published
2023
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41. Patient Perspectives of a Cardiovascular Post-Discharge Text Message Support Program—The ‘Heart Health’ Program

Author

Sheahen, B., primary, Chow, C., additional, Shaw, T., additional, Sivagangabalan, G., additional, Thiagalingam, A., additional, Denniss, A.R., additional, Wynne, D., additional, Kumar, S., additional, Thakkar, J., additional, Altman, M., additional, Thomas, S., additional, Kovoor, P., additional, Minn, H., additional, and Indrawansa, A., additional

Published
2023
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43. Steering a Patient-Led Community Atrial Fibrillation Screening Trial Through the COVID-19 Pandemic: Synergising Virtual and Face-to-Face Approaches

Author

Wong, K., primary, Nguyen, T., additional, Marschner, S., additional, Turnbull, S., additional, Indrawansa, A., additional, Burns, M., additional, White, R., additional, Gopal, V., additional, Trankle, S., additional, Usherwood, T., additional, Kumar, S., additional, Lindley, R., additional, and Chow, C., additional

Published
2023
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48. Process Evaluation of a Randomised Control Trial of Patient-Led Atrial Fibrillation Screening in Community-Dwelling Older People: A Qualitative Framework Approach

Author

Wong, K., primary, Nguyen, T., additional, Trankle, S., additional, Usherwood, T., additional, Marschner, S., additional, Turnbull, S., additional, Indrawansa, A., additional, Burns, M., additional, White, R., additional, Gopal, V., additional, Kumar, S., additional, Lindley, R., additional, and Chow, C., additional

Published
2023
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