12 results on '"Ong LE"'
Search Results
2. Understanding the low adoption of prefabrication prefinished volumetric construction (PPVC) among SMEs in Singapore: from a change management perspective
- Author
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Gao Shang, Low Sui Pheng, and Ong Le Tian Gina
- Subjects
Process management ,Technological change ,020209 energy ,0211 other engineering and technologies ,Exploratory research ,Change management ,Questionnaire ,Context (language use) ,02 engineering and technology ,Building and Construction ,021105 building & construction ,Workforce ,0202 electrical engineering, electronic engineering, information engineering ,Business ,Small and medium-sized enterprises ,Productivity ,Civil and Structural Engineering - Abstract
PurposeConstruction productivity issues have constantly surfaced in Singapore's construction industry. To push for productivity, the Government has implemented various initiatives to encourage industry players, particularly small and medium enterprises (SMEs), and to adopt more productive construction technologies. One of these technologies is prefabrication prefinished volumetric construction (PPVC), a concept of the design for manufacturing and assembly (DfMA) approach. This exploratory study sheds lights on PPVC adoption and its issues in Singapore in the context of the launch of the Construction Industry Transformation Map (ITM).Design/methodology/approachThe methodology used here is mainly a quantitative approach in the form of a survey. A questionnaire was developed and distributed to a pool of about 100 contractors, randomly chosen as part of a stratified sample. The questionnaire survey helps gain further insights into the industry's perceptions of PPVC and its adoption.FindingsThe study succeeded in identifying and analysing a list of drivers of and barriers to the adoption of PPVC. The top three most important potential drivers were “increase efficiency,” “technological change” and “changing nature of composition of workforce”. The three most important barriers were “ineffective on-site storage,” “high up-front payment” and “transportation issues”.Originality/valueThis study also looked into the organizational change management theory. Various theories were considered to help understand and implement change. It is understood that it is not only important for an organization to focus on the steps of these frameworks and models when the change is initiated but also for the organization to acknowledge and be mindful of the emotions of employees and take measures to overcome their emotions as part of organizational change management.
- Published
- 2020
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3. Identification of drone thermal signature by convolutional neural network
- Author
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Chong Yu Quan, Ong Le Wei Edmond, and Sutthiphong Srigrarom
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Identification (information) ,Thermal infrared ,Training set ,business.industry ,Minimum bounding box ,Computer science ,Thermal signature ,Computer vision ,Artificial intelligence ,business ,Convolutional neural network ,Drone - Abstract
This paper presents the work on drone detection and identification using thermal infrared emission, which is primarily aimed towards night operation. Through both indoor and outdoor trials, the characteristics of the thermal signature emitted by a drone when captured by a drone detection system is examined, and their implications on a machine learning problem are studied. Thermal maps are processed through a YOLOv3 based CNN model to detect and generate a bounding box around the thermal signature of the drone. The presented approach also seeks to utilise the characteristics of drone motion for more effective drone detection through machine learning.
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- 2021
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4. Identification of drone thermal signature by convolutional neural network
- Author
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Quan, Chong Yu, primary, Edmond, Ong Le Wei, additional, and Srigrarom, Sutthiphong, additional
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- 2021
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5. Understanding the low adoption of prefabrication prefinished volumetric construction (PPVC) among SMEs in Singapore: from a change management perspective
- Author
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Shang, Gao, primary, Pheng, Low Sui, additional, and Gina, Ong Le Tian, additional
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- 2020
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6. Novel pressure-induced topological phase transitions of supercooled liquid and amorphous silicene
- Author
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Huy, Huynh Anh, primary, Nguyen, Long Truong, additional, Nguyen, Duong Lam Thuy, additional, Truong, Tuan Quoc, additional, Ong, Le Kim, additional, Van Hoang, Vo, additional, and Nguyen, Giang Hoang, additional
- Published
- 2019
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- View/download PDF
7. CLAIM MANAGEMENT SYSTEM
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Ong Lee Wah, Rohayanti Hassan, Shahreen Kasim, Mohd Farhan Md Fudzee, Azizul Azhar Ramli, Hairulnizam Mahdin, and Seah Choon Sen
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Claim Management ,Mileage Claim ,Overtime Work Claim ,Information resources (General) ,ZA3040-5185 - Abstract
MBJB Claim Management System is developed to provide an online platform for MBJB staff to manage the claim activities. By changing the current manual claim method to computerised system, the effectiveness and efficiency of claim process have been improved, for instances this system can quicken the approval process as well as allow applicants to check the status of claim application, minimizes human errors in calculation and provides several type of claim report. By putting the system online, there is no more problems of time and distance. Iterative Model which each iterative are mini-waterfall is applied to develop this project. Furthermore, Model-View-Controller (MVC) architecture is also used for developing this project. Hence, laravel framework is used. Data dictionary is produced for better understanding on system database. Several user interfaces are created to visualise the actual system environment. Last but not least, Hypertext pre-processor (PHP), Javascript, jQuery and MySQL are used during system development. As a conclusion, MBJB Claim Management system can replace the existing manual claim management as well as bring benefits to staff MBJB.
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- 2017
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8. Brief Peer-Supported Web-Based Skills Training in Affective and Interpersonal Regulation (BPS webSTAIR) for Trauma-Exposed Veterans in the Community: Randomized Controlled Trial.
- Author
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Ong LE, Speicher S, Villasenor D, Kim J, Jacobs A, Macia KS, and Cloitre M
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- Humans, Male, Female, Middle Aged, Adult, Depression therapy, Depression psychology, Internet, Telemedicine, Interpersonal Relations, Veterans psychology, Stress Disorders, Post-Traumatic psychology, Stress Disorders, Post-Traumatic therapy, Peer Group
- Abstract
Background: Peer-supported mobile health (mHealth) programs hold the promise of providing a low-burden approach to increasing access to care and improving mental health. While peer support has been shown to improve engagement in care, there is limited investigation into the impact of peers on symptom outcomes. Trauma-exposed populations frequently endure co-occurring posttraumatic stress and depressive symptoms as well as difficulties in day-to-day functioning. This study evaluated the potential benefits of a peer-supported, transdiagnostic mHealth program on symptom outcomes and functioning., Objective: This randomized controlled trial tested the effectiveness of Brief Peer-Supported (BPS) web-based Skills Training in Affective and Interpersonal Regulation (webSTAIR), a 6-module transdiagnostic digital program derived from Skills Training in Affective and Interpersonal Regulation and compared to waitlist control in a community sample of veterans who screened positive for either posttraumatic stress disorder (PTSD) or depression., Methods: A total of 178 veterans were enrolled in this study using a 2:1 randomization scheme with 117 assigned to BPS webSTAIR and 61 assigned to waitlist control. PTSD and depressive symptoms as well as emotion regulation and psychosocial functioning were assessed at pretreatment, posttreatment, and 8-week follow-up time points. Mixed-effects models were used to assess change in outcome measures across time points. Exploratory analyses were conducted to determine whether the type and number of peer interactions influenced outcomes., Results: Significant interaction effects were observed for all outcomes such that participants randomized to BPS webSTAIR reported significantly greater improvement at the posttreatment time point compared to waitlist control with moderate effect sizes for PTSD (d=0.48), depression (d=0.64), emotion regulation (d=0.61), and functional impairment (d=0.61); gains were maintained at 8-week follow-up. An initial cohort of participants who were required to engage with a peer coach to progress through the modules interacted more frequently with peers but completed fewer modules compared to a later cohort for whom peer engagement was optional. Overall, those who completed more modules reported greater improvement in all outcomes., Conclusions: BPS webSTAIR was effective in improving PTSD and depression symptoms, emotion regulation, and psychosocial functioning in community veterans. Peer-supported, transdiagnostic mHealth programs may be a particularly efficient, effective, and low-burden approach to improving mental health among trauma-exposed populations. Investigation of peer-supported programs among other populations is necessary to evaluate the generalizability of the findings. Analyses comparing peer support that was required versus optional indicated that some veterans may not need or want peer support. Future research should evaluate how best to deliver peer support and for whom it is most beneficial. If successful, peer-supported tech programs may increase the Veteran Affairs workforce as well as improve veteran mental health services and outcomes., Trial Registration: ClinicalTrials.gov NCT04286165; https://clinicaltrials.gov/study/NCT04286165., (©Laura E Ong, Sarah Speicher, Diana Villasenor, Jamie Kim, Adam Jacobs, Kathryn S Macia, Marylene Cloitre. Originally published in the Journal of Medical Internet Research (https://www.jmir.org), 02.10.2024.)
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- 2024
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9. Supporting equitable engagement and retention of women patients in a trauma-informed virtual mental health intervention: Acceptability and needed adaptations.
- Author
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Olmos-Ochoa TT, Speicher S, Ong LE, Kim J, Hamilton AB, and Cloitre M
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- Humans, Female, United States, Ethnicity psychology, Mental Health, Minority Groups, Veterans psychology, Stress Disorders, Post-Traumatic psychology
- Abstract
Objective: This study examines barriers and facilitators to participation in webSTAIR, a telemental health program providing virtual coaching sessions for veterans with posttraumatic stress disorder (PTSD) and depression symptoms, among women veterans from racial and ethnic minority groups., Method: Using qualitative interviews (n = 26), we compared women veterans from racial and ethnic minority groups who completed (completers; n = 16) and did not complete (noncompleters; n = 11) webSTAIR at rural-serving facilities in the Veterans Health Administration (VA). Interview data were analyzed using rapid qualitative analysis. Chi-square and t tests assessed differences between completers and noncompleters by sociodemographic characteristics and baseline PTSD and depression symptomatology., Results: There were no statistically significant sociodemographic differences at baseline between completers and noncompleters; completers reported significantly higher baseline PTSD and depression symptomatology. Noncompleters were more likely to describe feeling angry, depressed, and unable to control their environments during participation in the program as barriers to webSTAIR completion. Completers, despite higher symptomatology, cited internal motivation and support from concurrent mental health services as facilitators. Both groups made recommendations for how VA can better support women veterans from racial and ethnic minority groups, including providing space for peer support and community building, addressing stigma associated with seeking mental health services and fostering mental health provider diversity and retention., Conclusions and Implications for Practice: Although previous research has identified racial and ethnic disparities in PTSD treatment retention, mechanisms to improve retention have been unclear. Women veterans from racial and ethnic minority groups should be collaboratively engaged in the design and implementation of telemental health programs for PTSD to improve equitable retention. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
- Published
- 2023
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10. AvrB mutants lose both virulence and avirulence activities on soybean and Arabidopsis.
- Author
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Ong LE and Innes RW
- Subjects
- Amino Acid Sequence, Arabidopsis genetics, Arabidopsis Proteins genetics, Arabidopsis Proteins metabolism, Bacterial Proteins metabolism, Gene Library, Genes, Plant genetics, Molecular Sequence Data, Mutation, Plant Diseases genetics, Plant Proteins genetics, Plant Proteins metabolism, Protein Conformation, Pseudomonas syringae genetics, Glycine max genetics, Virulence, Arabidopsis microbiology, Bacterial Proteins genetics, Plant Diseases microbiology, Pseudomonas syringae pathogenicity, Glycine max microbiology
- Abstract
The Pseudomonas syringae pv. glycinea effector protein AvrB induces resistance responses in soybean varieties that contain the resistance gene Rpg1-b and Arabidopsis varieties that carry RPM1. In addition to this avirulence activity, AvrB also enhances bacterial virulence on soybean plants that lack Rpg1-b and induces a chlorotic phenotype on Arabidopsis plants that lack RPM1. We screened a library of avrB mutants for loss of avirulence on soybean and Arabidopsis, and assayed selected avirulence mutants for loss of virulence on both plants. All mutants screened were recognized similarly on both plant species. Nine single-site avrB mutations that affected avirulence localized to a solvent-accessible pocket in the protein structure. Seven of these mutated residues are absolutely conserved between AvrB and its nine homologues. Avirulence mutants generally lost virulence enhancement on susceptible soybean varieties and lost the ability to induce a chlorotic response on the rpm1 null Arabidopsis variety Mt-0. Three of four avirulence mutants tested failed to interact with RIN4, an Arabidopsis protein previously shown to be required for RPM1 function. Our results suggest that soybean and Arabidopsis recognize AvrB in the same manner, and that AvrB enzymatic activity is required for its function as an avirulence and virulence effector on two different plant species.
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- 2006
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11. Convergent evolution of disease resistance gene specificity in two flowering plant families.
- Author
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Ashfield T, Ong LE, Nobuta K, Schneider CM, and Innes RW
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- Amino Acid Sequence, Arabidopsis microbiology, Arabidopsis Proteins genetics, Arabidopsis Proteins metabolism, Bacterial Proteins genetics, Bacterial Proteins metabolism, Immunity, Innate genetics, Molecular Sequence Data, Phylogeny, Plant Diseases microbiology, Plant Proteins metabolism, Pseudomonas syringae genetics, Pseudomonas syringae growth & development, Sequence Alignment, Sequence Homology, Amino Acid, Glycine max microbiology, Species Specificity, Arabidopsis genetics, Evolution, Molecular, Plant Diseases genetics, Plant Proteins genetics, Glycine max genetics
- Abstract
Plant disease resistance (R) genes that mediate recognition of the same pathogen determinant sometimes can be found in distantly related plant families. This observation implies that some R gene alleles may have been conserved throughout the diversification of land plants. To address this question, we have compared R genes from Glycine max (soybean), Rpg1-b, and Arabidopsis thaliana, RPM1, that mediate recognition of the same type III effector protein from Pseudomonas syringae, AvrB. RPM1 has been cloned previously, and here, we describe the isolation of Rpg1-b. Although RPM1 and Rpg1-b both belong to the coiled-coil nucleotide binding site (NBS) Leu-rich repeat (LRR) class of R genes, they share only limited sequence similarity outside the conserved domains characteristic of this class. Phylogenetic analyses of A. thaliana and legume NBS-LRR sequences demonstrate that Rpg1-b and RPM1 are not orthologous. We conclude that convergent evolution, rather than the conservation of an ancient specificity, is responsible for the generation of these AvrB-specific genes.
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- 2004
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12. CotB is essential for complete activation of green light-induced genes during complementary chromatic adaptation in Fremyella diplosiphon.
- Author
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Balabas BE, Montgomery BL, Ong LE, and Kehoe DM
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- Amino Acid Sequence, Bacterial Proteins genetics, Cyanobacteria genetics, Genetic Complementation Test, Light, Lyases metabolism, Molecular Sequence Data, Mutation, Operon, Phycoerythrin genetics, Phycoerythrin metabolism, RNA, Bacterial metabolism, Sequence Homology, Amino Acid, Transcription, Genetic, Adaptation, Physiological genetics, Bacterial Proteins metabolism, Cyanobacteria physiology, Gene Expression Regulation, Bacterial
- Abstract
The dramatic modifications of photosynthetic light harvesting antennae called phycobilisomes that occur during complementary chromatic adaptation in cyanobacteria are controlled by two separate photosensory systems. The first system involves the signal transduction components RcaE, RcaF and RcaC, which appear to make up a complex multistep phosphorelay. This system controls the light responsive expression of the cpcB2A2H2I2D2, cpeBA and cpeCDE operons, which encode phycobilisome proteins. The second system, which is not yet characterized, acts in concert with the first but only regulates the light responses of cpeBA and cpeCDE. We have generated and characterized a new mutant class, named the Tan mutants. In at least one member of this class, light-regulated RNA accumulation patterns are altered for cpeBA and cpeCDE, but not for cpcB2A2H2I2D2. Thus this mutant contains a lesion that may impair the operation of the second system. We demonstrate that several Tan mutants are the result of improper expression of the gene cotB. CotB has limited similarity to lyase class proteins, particularly those related to NblB, which is required for degradation of phycobilisomes in other cyanobacteria. Possible roles of CotB in the biogenesis of phycobilisomes are discussed.
- Published
- 2003
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