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UPSI Digital Repository (UDRep)
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| Latest addition to the database : |
| 951 | 2024 Article | Synthesis of copper oxide (CuO) via coprecipitation method: Tailoring structural and optical properties of CuO nanoparticles for optoelectronic device applications Suriani Abu Bakar Oxide-based nanoparticles have been studied extensively due to their unique optical and passivation properties, which are significantly distinct from those of bulk materials. The present study aimed to synthesize copper oxide nanoparticles through the co-precipitation method. The adequate substitution of sodium hydroxide (NaOH) into CuO is analyzed by different characterizations, i.e., X-ray diffraction (XRD), Scanning Electron Microscope (SEM), UV–visible spectroscopy (UV–visible), Fourier transform infrared (FTIR), and EDX. The X-ray diffraction spectra indicate that the prepared copper oxide nanoparticles were crystalline, nano-sized, and highly pure. The SEM micrographs showed that nanoparticles were spherical at lower contents of NaOH, while at higher contents, agglomeration of nanoparticles occurs, and the grain size changes. The decreased optical bandgap of the nanoparticles was observed due to different concentrations of sodium hydroxide. The crystalline size and strain val..... 80 hits |
| 952 | 2024 Article | A systematic literature review of brownfield sustainability: Dimensions, indicators, and stakeholders Nor Shahida Azali In recent years, the necessity of brownfield redevelopment has garnered increasing attention in academic literature. This paper employs a systematic review methodology to analyse current perspectives on brownfield sustainability, with a focus on dimensions, indicators, and stakeholders. Using the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) methodology, this study systematically reviews 40 articles from the WoS and Scopus databases. The findings highlight a shift towards prioritising ecological resilience and cultural preservation, alongside traditional economic, environmental, and social dimensions. The complexity of sustainability indicators is discussed, emphasising their crucial role in assessing redevelopment success. The review also identifies key stakeholders, including governments, developers, and community groups, who prioritise these dimensions due to their impact on sustainable urban development and community well-being. Future research should ..... 150 hits |
| 953 | 2024 Article | Enhancing geometry achievement in pre-service mathematics teachers: The impact of a scaffolded flipped classroom using a learning management system Miftachul Huda This study investigates the effectiveness of a flipped classroom approach integrated with scaffolding through a Learning Management System (LMS) in enhancing the geometry achievement of pre-service mathematics teachers. The study utilized an experimental post-test-only control group design involving 63 randomly selected pre-service mathematics teachers. The experimental group received instruction through a flipped classroom model supplemented with scaffolding and LMS support, while the control group experienced traditional teaching methods enhanced by scaffolding and LMS. Quantitative data were collected via a geometry essay test and analyzed using descriptive and inferential statistics, including t-tests. The results revealed that the experimental group significantly outperformed the control group in geometry achievement. Additionally, qualitative data from thematic analysis of semi-structured interviews indicated that the flipped classroom approach fostered improved comprehension, pe..... 66 hits |
| 954 | 2024 Article | Comparison of barriers to physical activity to levels of physical activity and psychological well-being based on the demographic environment in the vision impairment disability group Mohd Azrul Anuar Zolkafi Barriers to physical activity in vision impairment are associated with increased inactivity and psychological well-being problems. Previous research has only identified constraints in physical activity without conducting an in-depth analysis of physical activity levels and psychological well-being. This study aims to explore the differences in physical activity barriers based on three different demographic environments regarding physical activity levels and psychological well-being. The method used was quantitative inferential with a cross-sectional design approach involving 90 respondents registered with the Indonesia Association of the Blind. Data were collected using the Barrier Questionnaire for People with Vision Impairment (BPAQ-VI), the Psychological Well-Being Scale (PWBS), and General Practice Physical Activity (GPPAQ). The data was processed using the one-way ANOVA test and the Tukey HSD via SPSS version 26. The study's results stated differences in physical activity barriers..... 211 hits |
| 955 | 2024 Article | Visual representation of selected Malaysian political trolling on social media: Disclose the ideology and power Md Zahril Nizam Md Yusoff —The visual variety involving internet political trolling in Malaysia also adds to and impacts the audience's awareness of this resource. The existence of internet trolling encourages the audience's openness to give diverse responses and perceptions in politics in Malaysia. Thus, these responses and views will have a big impact on anything that is depicted visually, especially on social media. This study examines the ideology and power behind visual internet trolling on social media. For this purpose, the research methodology applies a qualitative approach based on visual content. Social media such as Twitter is used as the medium and unit of analysis of this study in visual sources. Adaptation of the theory uses Fairclough's (1995) critical discourse analysis and Visual Semiotics Theory by Kress and van Leeuwen (1996) in studying selected visual trolling. By using a combination and adaptation of these theories, visual ideology, and power can be best unraveled. The results of the stu..... 136 hits |
| 956 | 2024 Article | Formal and informal institutional factors and women entrepreneurship in Egypt: A qualitative perspective Rosfizah Md Taib This paper aims to identify the constrains faced by female entrepreneurs in Egypt. This study also intends to examine the influence of formal and informal institutional factors on women’s entry into entrepreneurship in Egypt. In addition, to explore the factors enable women entrepreneurs to overcome the barriers they may face. The qualitative research approach was adopted in the study to explore the challenges experienced by Egyptian female entrepreneurs. Purposeful sampling was employed and twenty-five (25) women entrepreneurs were selected from five Egyptian governorates to conduct semi-structured interviews to collect primary data. The findings indicated that the main constraints faced Egyptian women entrepreneurs arise from difficulty in raising capital, socio-culture commitments, sexual harassment, work-family conflict and lack of managerial skills. The study found factors such family-husband support, religious values, personal traits and technological skills are crucial for ove..... 149 hits |
| 957 | 2024 Article | Quantitative assessment of Hurricane Ian's damage on urban vegetation dynamics utilizing Landsat 9 in Fort Myers, Florida Zullyadini A. Rahaman Florida's unique climatic and geographical features have profoundly influenced its hurricane history. This study quantitatively examines the effects of Hurricane Ian on urban vegetation in Fort Myers, Florida, using remote sensing data. We analyzed pre- and post-hurricane vegetation indices, including NDVI (Normalized Difference Vegetation Index), ARVI (Atmospherically Resistant Vegetation Index), and SAVI (Soil-Adjusted Vegetation Index). Our findings reveal varied spatial impacts, with NDVI changes ranging from −0.03 to 0.333, ARVI changes from −0.016 to 0.25, and SAVI changes from −0.04 to 0.5. Negative values indicate vegetation damage, while positive values suggest resilience or recovery. The study area experienced a 63.75% reduction in vegetation cover, from 67.10 km2 before Hurricane Ian to 24.325 km2 after. Pre-hurricane NDVI ranged from −0.2298 to 0.5663, while post-hurricane values ranged from −0.189 to 0.521, indicating overall vegetation stress. ARVI maxima decrea..... 80 hits |
| 958 | 2024 Article | Leveraging machine learning algorithms in dynamic modeling of urban expansion, surface heat islands, and carbon storage for sustainable environmental management in coastal ecosystems Zullyadini A. Rahaman Climate change and rapid urbanization are dramatically altering coastal ecosystems worldwide, with significant implications for land surface temperatures (LST) and carbon stock concentration (CSC). This study investigates the impacts of day and night time LST dynamics on CSC in Cox's Bazar, Bangladesh, from 1996 to 2021, with future projections to 2041. Using Landsat and MODIS imagery, we found that mean daytime LST increased by 3.57 °C over the 25-year period, while nighttime LST showed a slight decrease of 0.05 °C. Concurrently, areas with no carbon storage increased by 355.78%, while high and very high CSC zones declined by 14.15% and 47.78%, respectively. The Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) model estimated a 28.64 km2 reduction in high CSC areas from 1996 to 2021. Statistical analysis revealed strong negative correlations between LST and vegetation indices (R2 = −0.795 to −0.842, p < 0.001) and positive correlations with built-up indices (R2 ..... 100 hits |
| 959 | 2024 Article | The effects of medicine ball training on batting velocity in female collegiate softball players Ali Md Nadzalan Softball batting performance, characterised by bat velocity and rotational strength, is crucial for competitive success. This study explores the effect of medicine ball training, a widely used yet understudied method, on these key performance metrics. This study examines the impact of an 8-week medicine ball training program on torso rotation strength and batting velocity in female collegiate softball players. Forty participants were divided into a control group and a medicine ball group, performing 100 bat swings thrice weekly. Additionally, the medicine ball group undertook full-body medicine ball exercises thrice weekly. Results showed a significant main effect, F(1, 38) = 5.00, p = 0.03, partial eta squared = 0.12 for torso rotation strength test and F(1, 38) = 4.01, p = 0.05, partial eta squared = 0.10 for batting velocity, signifying there is a difference in the effectiveness of the two training approaches. Pre- and post-intervention tests showed significant improvements in both ..... 85 hits |
| 960 | 2024 Article | In silico and MS/MS-Based approaches to investigate protein-protein interaction networks in staphylococcus aureus biofilm Hamidah Idris Staphylococcus aureus is a Gram-positive pathogen inhabiting soft tissues like the epidermis and nasal cavity. Currently, there is limited knowledge of the protein-protein interaction (PPI) networks in S. aureus biofilm. The present study aimed to characterize S. aureus proteins and their interaction networks using an in silico approach and to identify the proteins expressed in S. aureus biofilm using tandem mass spectrometry. Initially, a preliminary characterization of the PPI networks in S. aureus was conducted using the STRING 12.0 database. Subsequently, S. aureus biofilm was developed in a 6-well microplate and harvested at 6 h, 12 h, 18 h, and 24 h. The expression of proteins in S. aureus biofilm was determined using a combination of one-dimensional SDSPAGE and HPLC-ESI-MS/MS. The in silico results demonstrated that 147 biological processes, 46 molecular functions, 17 cellular components, and 15 biological pathways were significantly enriched (p .. 74 hits |
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