775 research outputs found
Low insertion loss of surface mount device low pass filter at 700 MHz
Get PDFThe paper involved with the design, simulation and fabrication of 6th order elliptical-based Surface Mount Device (SMD) LPF with cutoff frequency at 700 MHz. Fabricated LPF is consisted of four PCB layers which components of SMD are soldered on the top layer. Another three layers is for grounding and shielding, power supply and grounding void. The four layers is crucial to avoid interference between components. The research has find out that the momentum simulation is definitely required to improve the signals response compared to a normal simulation by ADS software. The comparison between momentum simulated versus measured and normal simulated versus measured is 0.2 dB and 29 dB correspondingly. Such huge difference leads to conclusion that momentum simulation is saving time without having much struggles and efforts to get optimum readings. The Proposed SMD LPF has a very low insertion loss of 0.965dB with a transition region of 195 MHz which is good steepness to avoid any image frequency
Timing Attack: An Analysis of Preliminary Data
Get PDFTiming attacks have caused an unprecedented evolution in the present cryptographic era where more and more cryptographic applications are running on embedded systems in a wireless environment. Paul Kocher, a well-known cryptanalyst was the first to successfully implement a timing attack on a cryptosystem. Subsequently many other timing attacks have been recorded while cryptographers tirelessly work on making the schemes more resistant to these and other side channel attacks. In this work, we examine timing information leaked from the computation of g^a (mod p) and observe the timing variations of modular exponential computations by varying the key length as well as the operating frequency of our experimental Raspberry Pi board. We have chosen to compute the algebraic expression on a U-Boot Bare Metal platforms our platform and use the GMP bignum library to compute the numbers which are greater than 64 bit.  We believe that the timing variations and patterns can lead to the early extraction of secret information in systems based on modular exponentiation. From our observations, there is a strong correlation of timing patterns when computing keys of the same length while the operating frequency used in the computation only affects the computational delay
The Development of Environment & Occupation Likelihood Scale on Workers Mental Health Status
Get PDFDaily work activities are among the sources of stress to humans. Typically, each individual will spend 1/3 of their day at work. It is no exaggeration to say that 1/3 affects the other 2/3. Appropriate assessments should be conducted to assess what employment factors and the work environment contribute to this. This study explains the development process and the use of the Environmental & Occupational Probability Scale screening form on mental health status or known as SKiPP. This assessment can be used to measure both of these factors on the mental health status of employees based on the DASS21 score.
Keywords: DASS21; Person-Environment-Occupation model; Work-related stress
eISSN: 2398-4287© 2021. The Authors. Published for AMER ABRA cE-Bs by e-International Publishing House, Ltd., UK. This is an open access article under the CC BYNC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer–review under responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians/Africans/Arabians) and cE-Bs (Centre for Environment-Behaviour Studies), Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia.
DOI: https://doi.org/10.21834/ebpj.v6i18.306
Employers Practice towards Managing Psychosocial Risk in the Workplace: IMAGE star rating system
Get PDFThe management of employee mental health in the workplace is essential. Good leadership by employers can increase employees' productivity and directly improve their quality of life. This study explores the use of more objective evaluators in formulating employers' action plans on workplace psychosocial risks. This survey was conducted using an employer practice evaluation form (Amalan Majikan: AM). Seventy-seven employers have filled out this survey voluntarily. Seven employers (9.1%) received an excellent result equivalent to five stars rating. This rating can be used as a reference for employers' practice managing psychosocial risk in the workplace.
Keywords: Psychosocial risk; Workplace management; Employers practice; SKiPP
eISSN: 2398-4287 © 2022. The Authors. Published for AMER ABRA cE-Bs by e-International Publishing House, Ltd., UK. This is an open access article under the CC BYNC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer–review under responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians/Africans/Arabians) and cE-Bs (Centre for Environment-Behaviour Studies), Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia.
DOI: https://doi.org/10.21834/ebpj.v7i20.351
Human Factors and Attitude towards Safe Driving Scale among Young Adults in Malaysia
Get PDFThe human factor is one of the major causes that contributed to a road traffic accident (RTA). This study aims to identify the correlation between sleep duration and safe driving attitude among young adult in Malaysia. The significant relationship showed between Domain (D) 1, 4 and 5 of ASDS-46 with sleep duration (ESS). D1 (self-complaint), D4 (self-concern) has positive correlation (p= .110 and .147) and D5 (driving style) has negative correlation (p=.132). In conclusion, short sleep duration may influence the risk of RTA, and on-road assessment is recommended for further investigation.Keywords: Young adult; Sleep quality; Driver’s attitude; Human factorseISSN: 2398-4287 © 2019. The Authors. Published for AMER ABRA cE-Bs by e-International Publishing House, Ltd., UK. This is an open access article under the CC BYNC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer–review under responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians) and cE-Bs (Centre for Environment-Behaviour Studies), Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia.DOI: https://doi.org/10.21834/e-bpj.v4i11.1726      Â
Clinical manifestation of academic stress in temporomandibular joints disorders (TMDS) among undergraduate dental students of Universiti Teknologi MARA, Malaysia / Nik Mohd Mazuan Nik Mohd Rosdy ... [et al.]
Get PDFObjectives: Numerous studies have indicated that academic stress is associated with detrimental impacts on mental well-being among undergraduate students. Here, we examined the clinical manifestations of the temporomandibular disorder (TMD) of perceived academic stress among dental students in Universiti Teknologi MARA. Methods: 27 TMD-diagnosed students with perceived academic stress were examined for the clinical manifestations of temporomandibular disorder. Research Diagnostic Criteria for temporomandibular disorders (RDC/TMD) a widely acceptable international TMD diagnostic tool was applied for this examination. RDC/TMD contains axis I and II. Statistical analysis was performed using the Fisher exact test using SPSS 20.0. The significance level was set at P≤0.05. Result: Regardless of the year of study, out of the 27 TMD-diagnosed students, 19 students (9.4%) had disk displacements with reduction, 8 students (3.9%) had TMJ arthralgia (n=7) and arthrosis (n=1), and 3 TMD patients (1.5%) presented myofascial pain (n=2) with limited jaw opening (n=1). Conclusion: Moderate to severe academic-related stressors may have contributed to the pathophysiological complications of TMD. Further research is needed to understand the pathophysiological mechanism of academic stressors in TMD development and progression
Academic stress contributes to Temporomandibular Joint Disorders (TMDs) among dental students of the Universiti Teknologi MARA Malaysia, not the social stress: an institutional study / Nik Mohd Mazuan Nik Mohd Rosdy ... [et al.]
Get PDFObjectives: The objectives of this study were to determine the prevalence of TMD in dental students in Universiti Teknologi MARA, and to identify risk factors that may contribute (social vs academic) to TMD in dental students.
Methods: In a cross-sectional study, 202 dental u ndergraduate students, aged 19 to 25 years from year 1 to year 5 were recruited in our study. The respondents have undergone an assessment using a Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) and Dental Environment Stress (DES) questionnaires. TMD was diagnosed b y using RDC/TMD axis I and II. The DES questionnaire was based on five-p oint Likert scale, from a range of not pertinent to very stressful. Stress scores were measured from seven stressor domains. Statistical analysis was performed using Fisher-exact test using SPSS 20.0. Significance level was set at P≤0 .05.
Result: 13.3% of the students were diagnosed with TMD, The higher p revalence of TMD was detected among female students. Present study demonstrated that academic stress is significantly higher than social stress among all dental students. Among the domains in the academic stress, performance pressure found to be the highest to effect the students.
Conclusion: The significant association between TMD and academic stress observed in our p resent study warrants further investigation to examine the underlying molecular mechanism of academic stress in TMD initiation and progression
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