Exploring student perspectives on ChatGPT: Knowledge, attitudes, concerns, and usage patterns at Universiti Teknikal Malaysia Melaka

This study explores the prevalence and perspectives of ChatGPT usage among students at Universiti Teknikal Malaysia Melaka, encompassing their knowledge, attitudes, concerns, perceived ethics, and usage patterns. A total of 367 students from five faculties participated in the survey, which was conducted via Google Forms. The findings reveal a high level of awareness and familiarity with ChatGPT, with 87.2% of respondents having heard about it and 79.6% understanding its workings. However, significant concerns were identified, including the potential undermining of educational goals (mean = 3.90, SD = 0.95) and negative impacts on creative writing skills (mean = 3.46, SD = 0.91). Ethical apprehensions were also prominent, with 49.1% of students recognizing ethical or legal considerations and 64.8% expressing comfort in interacting with ChatGPT. Despite these concerns, the utility of ChatGPT in enhancing productivity and aiding academic tasks is acknowledged, evidenced by high mean scores for assistance in drafting essays (mean = 3.87, SD = 0.87) and resolving academic doubts (mean = 3.83, SD = 0.85). This study underscores the need for ethical guidelines and controlled integration of ChatGPT into educational practices to balance its benefits with the maintenance of academic integrity and critical thinking skills

Discovering the impact: Exploring how insider threat drivers relate to organizational performance

This study aims to investigate the determinants of Insider Threat Drivers and the impact on organizational performance. By understanding these determinants, organizations can generate awareness to protect themselves and mitigate potential insider threats by recognizing their characteristics. The findings reveal a significant relationship between individual personality traits, motivation to attack, psychological state, skill set, opportunity, and individual characteristics with the propensity for insider threats and concern for precipitating events. Additionally, the study shows a significant relationship between insider threat drivers and organizational performance. This research is crucial as it provides guidelines, instructions, and awareness to support organizations, employers, and researchers in mitigating potential insider threats. By understanding the underlying factors that contribute to insider threats, organization scan implement targeted strategies to enhance security and protect their assets

The role of generational diversity in enhancing employee competency development at Malaysia public universities: A literature review

Generational diversity within organisations, particularly in higher education, is increasingly recognised as a critical factor influencing the development of employee competencies. Public universities in Malaysia face a pressing challenge: effectively managing this diversity to foster an inclusive and productive working environment. This study investigates the role of generational diversity in enhancing employee competencies and workplace dynamics in academic settings. By examining the interactions among different generations and the impact of their varying values and approaches on team collaboration and effectiveness, the research provides insights into how generational diversity shapes teaching, learning, and organisational performance. A systematic literature review of high-impact journal publications was conducted to explore the relationship between generational diversity and competency development. The findings reveal that generational diversity enriches perspectives in teaching and learning processes, while also influencing workplace dynamics and employee collaboration. Distinct generational approaches and beliefs are shown to drive innovation and improve educational outcomes. Moreover, the study highlights the importance of generationally sensitive management practices in enhancing job satisfaction and productivity. The results suggest that educational institutions should implement strategies to integrate generational diversity effectively, leveraging its potential to enhance competency development. Understanding and valuing generational differences are essential for creating an inclusive and competitive work environment, particularly in the context of Malaysian technical universities

Phytochemical analysis and antioxidant activity assessment of methanolic extract from jasmine flowers

This study offers a comprehensive analysis of the phytochemical composition and antioxidant properties of the methanol extracts from Jasmine flowers. Employing a combination of advanced techniques, including Gas-Chromatography Mass-Spectrometry (GC-MS), Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), and antioxidant activity assays, the research uncovered key insights into the bioactive potential of Jasmine. The GC-MS analysis identified nine distinct compounds, including major constituents, such as 2-Phenylthiolane (44.12%), Cyclohexene, 3-ethenyl- (25.88%), Acetaldehyde (12.70%), and N-Methylallylamine (10.31%) among others. The FTIR spectra revealed significant functional groups, including O-H and C-C stretches, suggesting the presence of phenolic compounds. The SEM imaging highlighted the morphological changes in the Jasmine flower powder, showing expanded oil glands post-pre-treatment, which enhanced the oil extraction process. The methanol extract exhibited a strong antioxidant activity, as evidenced by the DPPH radical scavenging assay. These findings position Jasmine flowers as a promising natural source of phytochemicals, particularly antioxidants, with potential for further pharmacological and industrial applications. Future studies could focus on isolating and evaluating additional bioactive compounds for their therapeutic potential

Output voltage stabilization of non-ideal DC-DC Zeta converter with output voltage error elimination via hybrid control

In this paper, we proposed an output voltage stabilization of a DC-DC Zeta converter using hybrid control. We modeled the Zeta converter under continuous conduction mode operation. We derived a switching control law that brings the output voltage to the desired level. Due to infinite switching occurring at the desired level, we enhanced the switching control law by allowing a sizeable output voltage ripple. We derived mathematical models that allow one to choose the desired switching frequency. In practice, the existence of the non-ideal properties of the Zeta converter results in steady-state output voltage error. By analyzing the power loss in the zeta converter, we proposed an improved switching control law that eliminates the steady-state output voltage error. The effectiveness of the proposed method is illustrated with simulation results

Q-switched erbium-doped fibre laser via sub-micron nickel particles saturable absorber

We demonstrate a sandwich-type saturable absorber (SA) configuration of sub-micron nickel (Ni) particles aimed at generating Q-switched pulses in an erbium-doped fibre laser. The Ni-SA was fabricated by depositing the Ni materials in between two fibre ferrules with 2.38% modulation depth and 225 MW/cm2 saturation intensity. The integration of the Ni-SA in a ring cavity laser generated Q-switched pulses at around 1559 nm lasing wavelength. The pulse operation regime was obtained within 70–250 mW pump power, in which the pulse width and repetition rate were tuneable from 13.98 to 5.12 µs and 25.74 to 55.72 kHz, respectively. Meanwhile, the maximum achievable output power and pulse energy at 250 mW were up to 5.55 mW and 99.71 nJ, respectively. This work unlocks new possibilities of generating high energy microsecond pulses for valuable applications in the near future

Impact of chitosan as a binder in graphene gas sensor for volatile organic compound detection

Exposure to high amounts of volatile organic compounds (VOC) in the short term can cause headaches, dizziness, worsening asthma symptoms, vomiting, and eye, nose, and throat irritation. Thus, a gas sensor is needed to detect VOC gases. Chitosan as a nonconducting polymer was used as an alternative binder for thick film gas sensors in this study. Chitosan was dissolved in an acetic acid to produce a polymer solution and mixed with graphene nanoflakes to make a graphene gas sensor. Two chitosan binder recipes were used in this study to investigate their performance in gas sensors for the VOCs acetone and ethanol. A single layer and a double layer of graphene were deposited to study their effects on VOC sensing. Single and double layers of graphene gas sensors had little effect on the sensing response to acetone and ethanol vapor. Results revealed that the gas sensors were prepared by binder B responded better than binder A in sensing response to acetone and ethanol with a response value achieved by T2-2-S1(3) and, T2-2-S1(1) with a response value of 1.0579 and, 1.0532, respectively. In addition, chitosan in graphene gas sensors had outstanding performances, in terms of linearity and repeatability characteristics

Impact of geometries on performances and surface morphology of SLS 3D-printed thrust and roller bearings

Bearings are among the most prevalent elements in civil engineering buildings and mechanical machinery, with numerous applications. The global bearings market has experienced considerable growth in recent years, fuelled by rising demand in the automotive, aerospace, and manufacturing sectors. Bearings were used as early as 40 Before Christ (BC) and commonly have a solid geometrical design. Lately, there have been limited studies to predict the effects of different geometries on the behaviour of bearings. In this study, different geometrical models were designed using CatiaV5 software and manufactured using selective laser sintering (SLS) three-dimensional (3D) printing. The printed geometrical bearing samples were subjected to vibration analysis, performance testing, and surface validation using a scanning electron microscope (SEM) to evaluate their tribological behaviour. The findings indicated that the samples with a triangular geometry exhibited a remarkably smooth surface texture. This smoothness surpassed that of the samples with a square geometry, and this was attributed to the shorter spacing between the melted particles, extensive coverage of the particle area and reduced presence of independent particles. These findings highlight the intricate interplay between geometry and surface texture in bearing fabrication, offering valuable insights for further research and development

Integrating family business values into cultural heritage stewardship at Malacca Heritage World Site, Malaysia

This research investigates the intersection of family business practices and cultural heritage management in Malaysia, a country rich in cultural diversity and history. The study was motivated by the need to understand how family-run businesses contribute to preserving and promoting cultural heritage in Malaysia. Through a comprehensive qualitative approach, researchers examined the business strategies, cultural values, and operational models of family businesses engaged in cultural heritage sectors. The findings revealed a unique blend of traditional values and modern business understanding, highlighting how these businesses play a crucial role in sustaining cultural heritage. Family businesses in Malaysia have developed distinctive approaches to cultural heritage management, blending traditional values with innovative strategies to navigate the challenges of modernisation and globalisation. This has implications for business practices and cultural preservation, offering insights into sustainable cultural heritage management in a rapidly evolving global landscape. The study underscores the importance of family business-based culture in the stewardship of cultural heritage. It argues for greater recognition of these businesses in policy formulation and heritage management strategies. The “take home” message is clear: Malaysia's symbiotic relationship between family businesses and cultural heritage presents a unique model that balances economic viability with cultural preservation, offering valuable lessons for the business world and cultural heritage sectors globally

A review of technologies and techniques for indoor positioning systems

Location-based services are among important applications in current telecommunication networks which causes an increasing demand in the advancements of indoor positioning systems (IPS). This paper presents a comprehensive review of the technologies and techniques employed in recent works related to IPS and discusses the challenges in IPS implementations. This study widely categorizes indoor positioning technologies into five types which are computer vision, short-range communication, acoustic-based, magnetic methods, and radio frequency (RF) technologies. The strengths and limitations of each technology is discussed based on its accuracy, coverage, infrastructure, implementation cost and signal characteristics. The literature study shows that range-based and fingerprinting are two main techniques employed in IPS. In addition, the study indicates that fingerprinting methods utilizing Wi-Fi and cellular networks are prevalent due to their widespread availability. However, these technologies face some challenges such as multipath fading, signal instability, device heterogeneity, infrastructure and cost implications, computational complexity, and privacy and security concerns. This paper emphasizesthe need for innovative approaches to enhance positioning accuracy and reduce infrastructure costs, thereby fostering broader adoption of IPS across diverse applications