This paper presents the application of Solid Phase Micro Extraction (SPME) coupled with Gas Chromatography - Mass Spectrometry (GC-MS) and Gas Chromatography - Flame Ionization Detector (GC-FID) in characterizing the agarwood incense. The work involved three types of SPME fibres at 30 minute sampling time. The fibres are 50/30 μm divinylbenzene-carboxen-polydimethysiloxane (DVB-CAR-PDMS), 65 μm polydi methylsiloxane-divinylbenzene (PDMS-DVB) and 85 μm carboxen-polydimethyl siloxane (CAR-PDMS). The results showed that among the many compounds extracted by GC-MS coupled with SPME, six compounds were substantially found in high quality agarwood incense due to their high percentage area (%). They are β-maaliene, α-elemol, β-selinene, 10-epi-γ-eudesmol, agarospirol and caryophellene oxide. The finding offers a new approach for establishing the volatile profile of agarwood incense components as well as for agarwood grading and discrimination.
Objective: To determine the construct validity and the internal consistency of the Medical Student Stressor Questionnaire (MSSQ) among medical students hence in the future it could be used as a valid and reliable instrument to identify stressors among medical students. Methods: The blueprint for the development of MSSQ was developed after a review of literature on the subject and a discussion with experts in the field. It comprised of 40 items
with six hypothetical groups. The face validity of the questionnaire was established through discussion with 141 final year medical students whereas content validity was established through discussion with experts from field of Medical Education and Psychiatry. It was administered to a total of 761 medical students. Data was analysed using Statistical Package Social Sciences (SPSS) version 12. Factor analysis was applied to test construct validity of the MSSQ. Reliability analysis (Cronbach’s alpha and item total correlation) was applied to test internal consistency of the MSSQ. Results: The total Cronbach’s alpha value of the MSSQ was 0.95. All the preliminary 40 items were included in the MSSQ as the items had item total correlation value of more than 0.3. The items were loaded nicely into the six pre-determined hypothetical groups as their factor loading values were more than 0.3.
Conclusion: This study showed that MSSQ had good psychometric value. It is a valid and reliable instrument in identifying stressors among medical students.
Objective: To determine the sensitivity, specificity and internal consistency of the Malay version GHQ-12 among medical student population. This study determined the appropriate GHQ-12 score to detect distressed medical students. Methods: The Malay version of GHQ-12 was derived based on two sources which were the original version GHQ-12 and the validated Malay version 30-items GHQ. The GHQ-12 and the Malay version Beck Depression Inventory-II (BDI-II) were administered to a total of 141 medical students. Distress diagnoses were made based on the Malay version BDI-II. ROC curve analysis was applied to determine the sensitivity and specificity of the GHQ-12 by testing against the BDI-II. Reliability analysis (Cronbach’s alpha and item total correlation) was applied to test internal consistency of the
GHQ-12. The analysis was done using SPSS version 12.Results: The GHQ-12 sensitivity and specificity at cut-off point of 3/4 was 81.3% and 75.3% respectively with positive predictive value (PPV) of 62.9% as well as area under ROC curve more than 0.7. The Cronbach’s alpha value of the GHQ-12 was 0.85.Conclusion: This study showed the Malay version GHQ-12 is a valid and reliable screening tool in detecting distressed medical students. The
GHQ-12 score equal to or more than 4 was considered as significant distress.
Introduction: USMaP-i is an English, 66-item self-administered inventory, consisting of personality
(60 items, 5 factors) and faking (one factor) components, which was mainly developed to measure
personality traits among Malaysian students based on local cultures and values. The personality
component was based on the Big Five dimensions as suggested by numerous personality researchers.
Previous exploratory studies showed promising validity, reliability and stability of USMaP-i.
Objective: To provide further validity evidence of USMaP-i for use among medical degree program
applicants by confirmatory factor analysis (CFA). Methods: Data were collected as a part of screening
of medical degree program applicants for year 2010–2013 intakes in Universiti Sains Malaysia
(USM), of which 657 cases were suitable for analyses following a data screening measures. CFA was
performed by bootstrap maximum likelihood estimation due to non-normality of items at multivariate
level. Results: Although the revised five-factor model of personality showed good model fit (X2(df) =
144.36(55), P-value < 0.001; CFI = .944, TLI = .921; RMSEA = .050; SRMR = .032, Bollen-Stine
bootstrap P-value = 0.004), the reliability of the factors is very poor (composite reliabilities (CR) =
.483 to .650). In contrast, the unidimensional faking component exhibited good model fit (X2(df)
= 14.15(5), P-value = 0.015; CFI = .984, TLI = .968; RMSEA = .053; SRMR = .011, BollenStine
bootstrap P-value = 0.068) and factor reliability (CR = 0.731). Conclusion: The personality
component should be revised and revalidated due to poor reliability, despite showing good model fit.
In contrast, the faking component showed good model fit and reliability. Further validation studies are
recommended before its use among medical degree program applicants.
Many researchers have emphasized the importance of teaching stress management and self-care skills to medical students as they are vulnerable to develop psychological health problems. The researchers designed a 4-hour intervention based on the DEAL model to address these problems. This study aimed to determine outcomes of the DEAL-based intervention on medical students’ stress, anxiety and depression symptoms. Methods: A randomized controlled trial study was conducted on 171 medical students. Their stress, anxiety and depression symptoms were measured by the 21-item Depression Anxiety Stress Scale at five intervals; at 2 weeks before the intervention, and at 1 week, 8 weeks, 16 weeks and 32 weeks after the intervention. The mixed model ANCOVA was applied to determine the effect of the intervention on the participants’ psychological health at five intervals. Results: A total of 153 medical students (intervention = 73 and control = 80) completed this study. Results showed that the intervention group experienced significantly lower stress and depression symptoms than the control group. Although anxiety scores are consistently lower in the intervention group, no significant differences between groups were found. Conclusion: These results support the favourable outcomes of the intervention on psychological health of medical students. It is a promising intervention to be considered by medical schools as it consumes minimal amount of time, money, training and man power as well can be implemented easily.
Introduction: Emotional intelligence (EI) refers to the ability to perceive, control and evaluates emotion. Research results found that EI is relevant to organizational development and manpower development. It is also important to academic success, emotional adaptability, stress management and other lifestyle issues. EI principles help one to understand and assess people's behaviors, interpersonal skills, attitudes and potentials. It also plays an important role in human resource planning, job placement and recruitment interviews and selection, business development, customer care services, and more. The study focused on exploring students’ EI, subscales of EI (i.e., personal competencies and social competencies) and its associated factors. Methods: A cross-sectional study was conducted on 571 medical students from year 1, 3 and 5. Years of study, gender, and ethnic groups were included as factor variables. USM Emotional Quotient Inventory (USMEQ-i) was used to measure EI, personal competence and social competence. Results: Years of study significantly associated with EI (F = 18.41, p < 0.001), personal competency (F = 16.93, p < 0.001) and social competency levels (F = 12.92, p < 0.001). There was a decreasing pattern of EI, personal competency and social competency level as medical training progresses. Male significantly had a higher EI (t = -1.99, p < 0.05) and personal competence (t = -1.99, p < 0.05) levels than female medical students. Nevertheless, male and female students had equal levels of social competence (t = -1.39, p = 0.730). Ethnic groups demonstrated no significant association with EI, personal competency and social competency level. Conclusion: This study found that years of study were the main associated factor, followed by gender. In addition, there is a cause of concern regarding the decreasing pattern of EI throughout medical training. Further research is required to investigate this concern, so that appropriate intervention can be taken to alleviate the concern.
Introduction: Clinical educators around the globe agreed that an optimal educational climate is a vital aspect for effective learning to take place. This study was conducted to evaluate the perceptions of graduates toward the quality of clinical education climate in USM medical school. Methods: A cross-sectional study was conducted on a cohort of USM medical graduates. Questionnaires were administered to the graduates to measure their perception on four aspects of clinical education climate that include structure of clinical rotation, clinical teaching and learning activities, quality of lecturers and end clinical rotation assessment across 13 clinical rotations. The graduates were requested to respond to seven-Likert scale ranging from 1(poor) to 7(excellent). Scores of equal to or more than 5 was considered as positive areas, scores of between 4 and 5 were considered as areas for improvement, and scores less than 4 were considered as areas of concern. Data analysis was performed using SPSS version 20. Results: A total of 105 (96.3%) graduates responded to the questionnaire. Results showed only the paediatric rotation obtained positive ratings on all areas of the clinical rotation structure. With regards to teaching and learning activities, the graduates scored most of the clinical rotations between 4 and 5. With regards to the quality of lecturers, most of the clinical rotations obtained score more than 5. Most of the areas related to the end-of-assessment of clinical rotation obtained score more than 5 except for the feedback adequacy, indicating inadequacy of feedback they received. Conclusion: USM medical graduates positively perceived the quality of lecturers during clinical training, however several areas of clinical education related to clinical rotation structure, clinical teaching and learning activities, and feedback practice were perceived by them as areas for improvement. Medical schools should introduce strategic measures to address the concerns raised by the graduates to ensure the best clinical learning experience are provided to the current and future medical students.
Background: One of important educational climate roles is to provide an environment that promotes positive development of medical students' psychological wellbeing during training. Unfortunately, many studies have reported that educational climate in medical education are not favourable to them. Therefore, it is a real need for a simple, valid, reliable and stable tool that will help medical schools to screen psychological wellbeing of their students so that early intervention could be done.
Objective: This study aimed to explore the psychometric properties of the Medical Student Wellbeing Index (MSWBI) to measure psychological wellbeing at different interval of measurements in a cohort of medical students.
Method: A prospective study was done on a cohort of medical students. MSWBI was administered to the medical students at five different intervals. The confirmatory factor analysis, Cronbach's alpha and intra-class correlation analysis were applied to measure construct validity, internal consistency and agreement level at different interval of measurements.
Result: A total of 153 (89.5%) medical students responded completely to the MSWBI. The MSWBI showed that the one-factor model had acceptable values for most of the goodness of fit indices signified its construct was stable across multiple measurements. The overall Cronbach's alpha values for the MSWBI at the five measurements ranged between 0.69 and 0.78. The ICC coefficient values for the MSWBI total score was 0.58 to 0.59.
Conclusion: This study found that the MSWBI had stable psychometric properties as a screening tool for measuring psychological wellbeing among medical students at different time and occasions. Continued research is required to refine and verify its psychometric credentials at different educational settings.
Introduction: Medical and allied health educators around the globe agreed that an optimal educational climate is a vital aspect for effective learning to take place. Without a doubt, appraisal of the educational climate has been emphasized as a key to the delivery of high quality medical education. In addition, the appraisal provides useful feedback to particular institution to improve their curriculum.
Objective: This study was employed as part of the School of Medical Sciences (SMS) Universiti Sains Malaysia curriculum review process. It aimed to explore the strengths and weaknesses of the current medical curriculum thus could provide useful information to guide the curriculum review committee during the review process.
Method: A cross sectional study was conducted on a total of 656 medical students from the first, third and fifth year of study. Purposive sampling method was applied. DREEM was administered to the medical students to evaluate the educational climate in the studied medical school.
Result: A total of 511 (77.9%) medical students completely responded to the 50 statements of DREEM. The mean global score across phases of medical training was 128.36/200. The global scores for year 1, year 3 and year 5 were 138.94/200, 122.27/200 and 125.49/200 respectively. Results showed that; 1) the medical school had reasonably level of educational climates across phases of medical training; 2) the medical teachers were knowledgeable and well prepared for the teaching; 3) the students were overloaded with factual knowledge; 4) the medical teachers were quite harsh to students during teaching session especially in clinical phase; 5) students experienced a significant amount of stress that led to poor memory; 6) the learning process was inclined toward teacher-centered rather than student-centered learning; 7) students had a considerable healthy social relationships with peers as well as others; and 8) academic dishonesty became more apparent in the clinical phase.
Conclusion: The medical school's educational environment across different phases of study was more positive than negative. However, there are plenty of rooms for improvement as perceived by the medical students. The medical school should address various important issues highlighted in this article during the curriculum review process.
Teaching stress management skills for medical students has been echoed as an important educational component in medical education. Discussions about approaches to teaching stress management in medical education context are largely unexplored despite of a large number of articles have emphasized on its importance. This paper describes four elements in a framework as an approach to teaching stress management skills in medical education. As one moves through the framework, it provides a greater degree of insight on stress management ability as is acquired through one's awareness, experience and conscious effort that allow stressful situations to be handled effectively and efficiently. It may provide a useful educational framework for medical teachers to teach and assess stress management skills of medical students. It also may be used as an aid in planning, implementing and evaluating stress management programs in medical schools. The authors discuss about the implications of this framework for future research in medical education.
Context: Question vetting is important to ensure validity, reliability, and other quality indicators of assessment tools, including the MCQ. Faculty members invest a substantial amount of time and effort into the MCQ vetting process. However, there is shortage of scientific evidence showing its effectiveness and at which level it needs to be focused on. This study aimed to provide scientific evidence regarding the effects of question vetting process on students’ examination performance by looking at their scores and pass-fail outcomes.
Method: A parallel randomized control trial was conducted on third year medical students in a medical school. They were randomly assigned into two equal groups (i.e. control and experimental). Two mock examinations were conducted (i.e. time I and time II). At time I, non-vetted MCQs were administered to both groups as a baseline measurement. At time II, vetted MCQs were administered to the experimental group, while the same non-vetted MCQs were administered to the control group.
Results: Out of 203 students, 129 (63.5%) participated in both mock examinations. 65 students were in the control group and 64 students were in the experimental group. Statistical analysis showed no significant differences (p > 0.05) in mean examination scores and pass-fail outcomes between or within the control and experimental groups.
Conclusion: This study indicated that the MCQ vetting process did not influence examination performance. Despite these findings, the MCQ vetting process should still be considered an important activity to ensure that test items are developed at the highest quality and standards. However, it can be suggested that such activity can be done at the departmental level rather than at the central level.
Self-similarity network traffic is considered as one of stochastic process studies in telecommunications
engineering. In determining self-similarity traffic, Hurst value is an important parameter to be measured.
This paper presents self-similarity traffic measurement using Rescaled Range, R/S statistical method in
estimating Hurst parameter value. Inbound internet traffics on an IP-based campus network in Malaysia,
which implements a 16.0 Mbps speed to internet and supports 10GE bandwidth at switch level, are
captured and measured. The objectives of this research are to observe and present the existence level of
Hurst parameter value, type of self-similarity and overall percentage of Hurts parameter estimation. The
inbound traffic is measured due to its relevancy to next development on policing and shaping algorithm
traffic model. Solarwinds Net Flow machine is setup on a campus gateway to its Wide Area Network
(WAN). Data of the traffic like in flow, size and speed were taken over 20 days and 14 weeks in different
inter-arrival time. These traffics are analysed, which lead to the impacts of packet loss, throughput and
speed in network performance. Results present the Hurst parameter value, the existence of Long Range
Dependant Self-similarity traffic distribution and percentage level of Hurst parameter value for the three
types of captured traffic
Objective: This paper describes the patterns of professional identity development (PID) among
medical graduates of a SPICES (i.e., Student-centred/teacher-centred; Problem-based/information
gathering; Integrated/discipline-based; Community based; Elective/uniform; and Systematic/
apprenticeship-based) curriculum implemented by the School of Medical Sciences, Universiti Sains
Malaysia (USM). Methods: The phenomenological study design evaluated 50 medical graduates of
USM who underwent housemanship at government hospitals in the Peninsular of Malaysia. Focus
group interviews (FGI) were conducted to explore and capture the experience of the participants
in relation to PID during medical training. Eight FGI sessions were conducted at a specific place
as agreed by both researchers and participants. A thematic analysis technique assisted by Atlas.ti
software was used to analyse the qualitative data. Results: The thematic analysis revealed that there
were two themes: self-development and professional development. The self-development theme was
represented by four categories: self-confidence, internal and external motivation, communication skills,
and problem solving. The professional development theme was represented by five categories: social
adjustment, leadership skills and management, team work, hands-on skills, and creativity. Conclusion:
The formation of professional identity among USM medical graduates was related to self-development
and professional development. This suggests that the USM medical curriculum is vital in shaping
professionalism attributes among its medical graduates that are balanced among knowledge, skills,
behaviours and values. Producing balanced medical graduates will ensure the highest quality of
healthcare sevices provided to the country. The implications of this study and recommendations are
discussed.
Distributed generator is one of the most common sources of electric power as it has many advantages. However, it might cause negative effects to the distribution system if appropriate conditions are undermined. Thus, this paper describes ways to optimise the use of distributed generator in a distribution system in order to reduce total power losses and to improve system performance by increasing stability of the voltage profile. This study focuses on the installation of distributed generator that is installed on 69-bus radial distribution system. Optimisation are done through Particle Swarm Optimization and Voltage Stability Indicator. The findings show that total power loss was reduced by 44.6%, and there was improvement in voltage profile stability.
Contaminated and ageing transmission line insulators often suffer from temporary or permanent loss of their insulating properties due to flashover resulting in power system failure. Surface discharges are precursors to flashover. To pre-empt any occurrence of flashovers, utility companies monitor the conditions of their insulators. There are numerous insulator surface monitoring techniques such as Leakage Current, Acoustics, and Infrared. However, these techniques may not be suitable for in-situ condition monitoring of the insulators as they are prone to noise, affected by environmental conditions or contact methods. Monitoring of the UV signals emitted by the surface discharges of these insulators has been reported to be a promising technique. However, comprehensive studies on this technique is lacking, especially on aged insulators. This paper investigated the UV signals of contaminated and aged insulators detected during surface discharge activities using UV pulse method. The time and frequency domain of the UV signals were analysed for a group of insulator samples having varying levels of contamination and phases of ageing. Results show that there is a strong correlation between the contamination level and ageing of the insulators with the amplitude and harmonic components of the UV signals. This correlation can useful to monitor in-service insulator surface conditions.
Agarwood or gaharu, due to its unique scent and quality is considered one of the most expensive wood in the world. This paper uses solvent trap, Gas Chromatography-Flame Ionization Detector (GC-FID) and Gas Chromatography-Mass Spectrometry (GC-MS) to establish agarwood quality, and is part of ongoing research. The result showed that monoterpenes hydrocarbon, sesquiterpenes hydrocarbon and oxygenated sesquiterpene contribute to agarwood smoke. Among many compounds extracted, 2-hydrdoxy-benzaldehyde, β-selinene and guaia-1(10),11-dien-15,2-olide were found dominant in monoterpenes hydrocarbon, sesquiterpenes hydrocarbon and oxygenated sesquiterpenes respectively. This finding pointed to the utility of solvent trap in extracting chemical compounds of agarwood smoke. This study is also useful for further research on establishing the grade of agarwood.
The microbial composition in coastal water of the Port Dickson beach in Negeri Sembilan, Malaysia was analyzed using several microbial indicators for the purpose of selecting the best indicator for marine water pollution. The indicators studied were total coliform (TC), fecal coliform (FC), fecal streptococci (FS) and coliphage. Five locations were selected along the Port Dickson beaches and samplings were carried out in 1998 and 2001. The results showed an increase in the number of total coliform (TC), fecal coliform (FC) and fecal streptococci (FS) between these two sampling by 98.12%, 86.12% and 99%, respectively. The numbers of TC, FC and FS exceeded the recommended limit for recreational seawater based on U.S. EPA 1986 standard. There was a positive correlation between TC, FC and FS and negative to coliphages.
Nitridation behaviour of Al-Mg-Si alloys was studied as a function of temperature by means of thermogravimetry method. A reactive gas, N2-4%H2 at a rate of 10 ml/min was purged into the thermogravimetry analyser chamber. The Al alloys were heated from 25oC to 625oC at the heating rate of 15oC/min and then reduced to 3oC/min until it reached 1500oC. It was found that by varying the amount of Mg and Si in Al-Mg-Si alloys significantly influenced the growth of the composites. A differential thermogravimetric curve shows the Mg containing alloys experienced many steps of chemical reactions. This indicates that besides AlN presence as a major phase, other compounds also exist in the final product. The X-ray diffraction results confirmed the existence of oxide phases such as a-Al2O3, MgAl2O4 and MgO in addition to residual Si and Al metal. The presence of oxide compounds is believed to be due to the reaction between the alloying elements and residual oxygen gas left in the reaction atmosphere. It was also found that Si could play a role in promoting the weight gain of the composite produced. The heating rate has also a profound effect on the weight gain, whereby higher heating rate resulted in low yielded of AlN during the nitridation reaction of the Al-Mg-Si alloys.
Liquefactions of kenaf core wood were carried out at different phenol-kenaf (P/k) ratios. Characterizations of kenaf core wood liquefied residue were carried out to measure the degree of liquefaction. This provides a new approach to understand some fundamental aspects of the liquefaction reaction. Functional groups on the raw kenaf core wood and liquefied residue were examined using Fourier transform infrared spectroscopy (FTIR). The crystallinity index of the kenaf wood liquefied residue, which represents crystallinity changes of the cellulose component after the liquefaction process, was studied using X-ray diffraction (XRD). The surface morphology of the wood residue was observed using scanning electron microscopy (SEM). The thermal behavior of the residues was analyzed using thermogravimetric analysis (TGA). Abroad peak around 3450-3400 cm-1 representing OH stretching in lignin start to disappear as P/K ratio increases. The results showed that the higher the P/K ratio the greater the liquefaction of the lignin component in the kenaf core wood. The crystallinity index (CrI) on the kenaf liquefied residues increased with the increase in P/K ratio. SEM images showed that the small fragments attached on the liquefied kenaf residue surface were gradually removed as the P/K ratio was increased from 1.5/1.0 to 2.5/1.0, which is mainly attributed to the greater chemical penetration toward reactive site of the kenaf fibres. Residue content decreased as the P/K ratio increased from 1.5/1.0 to 2.5/1.0. TGA results showed the increase of heat resistance in the residue as the P/K ratio was increased.
Universiti Sains Malaysia (USM) Attitudes toward Statistics (USM-AS) is a newly developed, selfadministered inventory for measuring attitudes toward statistics among postgraduate students. The
USM-AS consists of three factors (affect, cognition, and behavior) and 58 items. This study was
aimed to validate the USM-AS and provide evidence of its construct validity by investigating its
internal structure. This study consists of four validation studies, which were conducted consecutively
among postgraduate students (master’s degree and PhD students) in the medical and health sciences.
The revised USM-AS, consisting of three factors and 12 items, was found to have good construct
validity, which was demonstrated by good model fit, high factor loadings (0.62 to 0.92), high
construct reliability (0.84 to 0.89), good discrimination between factors and good test-retest reliability
(intraclass correlation coefficients = 0.63 to 0.82). However, validity was limited to postgraduate
students in the medical and health sciences in Malaysia. Further validation studies among
postgraduate students in other scientific fields are recommended to provide additional construct
validity evidence of the USM-AS.