Browse publications by year: 2015

  1. Elumalai G, Hashim A, Sankaravel M, Chia RR
    MyJurnal
    This study is aimed to evaluate the obesity level and promote a healthy lifestyle among students at Universiti Pendidikan Sultan Idris, Perak. Fifteen male and fifteen female undergraduate students aged between 19 years to 24 years from each faculty of university Pendidikan Sultan Idris are randomly selected as samples (n=270). The Body Mass Index (BMI) and modified questionnaires by Burton (1999) are used as instruments for this study. Analysis showed that 15.9% of the respondents are overweight, 23.7% are in pre-obese level, 27.8% are in obese level one and 3.7% respondents are in obese level two. T-test analysis of independent samples was used to determine the level of knowledge and a healthy lifestyle among male and female students. The results showed that there is no significant difference between male and female students in the levels of healthy lifestyle practices with p = 0.089 (p> 0.05); the level of a healthy lifestyle practices among males (M = 71.57, SD = 8:42) have almost the same mean with females (M = 70.05, SD = 6:00). Furthermore, the findings indicate that the scores on the levels of knowledge on healthy lifestyle for male students is (M = 79.09, SD = 7:38), while the mean score for female students is (M = 76.95, SD = 8:59) with p = 0.028 (p <0.05). On comparing the means of the scores on the levels of knowledge on healthy lifestyle, the male students scored higher than the female students. It turns out there is a difference between male and female students in terms of the level of knowledge on healthy lifestyle. The study found that the respondents have a good knowledge on healthy lifestyle, but lack practice in daily life. This is an unpleasant indication because Universiti Pendidikan Sultan Idris students are facing the risk of cardiovascular-related diseases caused by obesity and a sedentary lifestyle.
    Study site: Universiti Pendidikan Sultan Idris (UPSI), Perak, Malaysia
    MeSH terms: Adult; Female; Humans; Life Style; Malaysia; Male; Obesity; Surveys and Questionnaires; Students; Universities; Body Mass Index; Overweight; Young Adult
  2. Thariq Khan Azizuddin Khan, Tony Morris, Daryl Marchant
    MyJurnal
    The main objective of this study was to investigate the effectiveness of portable devices (Mp4) in delivering imagery based on video modelling (expert model) among 30 female netball players, examining their personal experience. In the pre-test-intervention-post-test study design, 15 participants were randomly assigned into each of the Mp4 (initial and repeated instructions). Participants practised the imagery for seven days and were interviewed at post-test. In interviews most of the participants in the Mp4 conditions reported that their confidence for shooting increased. They considered the Mp4 to be a useful device to practice imagery at any time and place, but imagery training routines varied among participants and were influenced by their personal life and free time activities. The results of this study signified that the Mp4 has the potential to be a reliable tool to deliver imagery training based on video modelling among netballers.
    MeSH terms: Female; Mental Processes; Play and Playthings; Research Design; Imagery (Psychotherapy)
  3. Norkhalid Salimin, Gunathevan Elumalai, Md Amin Md Taff, Yusop Ahmad, Nuzsep Almigo
    MyJurnal
    This quasi experimental study is aimed to determine the effect of 8 weeks physical exercise training program among 219 obese an overweight National Service Training Program (NSTP). It is a purposive sampling and divide to experimental group (n = 110) and control group (n = 109). Body fat (BFP) measured using Omron Karada Scan HBF 375 with Height Scale. The experimental group underwent 8 weeks physical exercise program using the NSTP wellness module. The module contains 18 low intensity training, 40 moderate intensity training and 14 high intensity training with 8 psychological sessions. Analysis showed a significant difference between pre-test and post-test after 8 weeks in experimental group. There was a greater decrease BFP (-1.44%) and weight (-2.03%). The control group showed slightly increase in BFP (+2.97%) but decrease weight (-0.28%). This means the intervention program very effective and manage to reduce the BFP and weight among 18 years old obese and overweight NSTP in Malaysia.
    MeSH terms: Adipose Tissue; Body Weight; Malaysia; Obesity; Exercise; Control Groups; Overweight
  4. Afizudin Idrus, Nur Ikhwan Mohamad
    MyJurnal
    The purpose of this study was to determine the relationship between supporting leg strength and supporting leg balance; and their correlation with kicking performance. Thirty four recreational male futsal players with a mean age 23.2±1.5 years old voluntarily participated in this study. Physical characteristics of participants (age, weight, height and body mass index) were recorded prior to test. Force platform was used to record kinetics variables during maximal instep kick (with and without target) and during the Balance Stork Test. Ball flight after impact with the kicking foot was recorded using high speed video camera set at 120 frame per second, with 500 hertz shutter speed. Ball velocity was then calculated using motion analysis software. Pearson correlation was used to determine the relationship between variables. Results indicated no significant correlation between maximal vertical force (max-vGRF) with the ball velocity for both condition of kicks; between strength (max-vGRF) and balance (at 95% ellipse area) of supporting leg; between supporting leg balance and ball velocity; between supporting leg balance and ball accuracy. However, negative significant correlations exist between max-vGRF and ball accuracy. Max-vGRF and ball velocity for both kicking without target and kicking with target was found highly correlated. As a conclusion, kicking performance was not primarily influenced by either the supporting leg strength (MVF) or supporting leg balance (95% ellipse area).
    MeSH terms: Body Weight; Foot; Kinetics; Leg; Male; Recreation; Software; Body Mass Index
  5. Ong, Kuan Boon, Hishamuddin Ahmad, Sanmuganathan Jegathesan, Lee, Ai Choo
    MyJurnal
    Anthropometric measurements are widely used to determine body composition, size and weight, and proportions of the human body, especially in children. Our aim was to identify common physical characteristics of student athletes in selected Malaysia states sports schools. The ensuing analysis aimed to provide these states sports school athletes with a competitive advantage. Participants (n=317) were from student-athletes, aged between 13-14y and 15-16y staying in their school’s dormitory. These student-athletes comprise of 181 males (13-14y, n=138; 15-16y, n=43) and 136 females (13-14y, n=84; 15-16y, n=52). All subjects were measured on 26 anthropometric dimensions using measurements of four skin folds, six direct lengths, seven segment girths, six segment breadths, plus body mass, stretch stature and sitting height. The results showed significantly differences (p
    MeSH terms: Anthropometry; Body Composition; Body Height; Body Weight; Child; Female; Humans; Malaysia; Male; Sports; Students; Human Body; Athletes
  6. Punita Marapen, Low, Jeffrey Fook Lee
    MyJurnal
    The relative age effect (RAE) is the effects of differences between athletes born in the early compared to the later months of the year. This study investigated the presence of RAE among 306 age-group swimmers competing in the 2014 Malaysian Schools Sports Competition (MSSM). Participants’ birthdates were grouped according to four birth quartiles (Q1- Jan to Mar; Q2- Apr to June; Q3 – July to September; Q4 – October to December). Data analyzed using chi-squared goodness-of-fit showed there was a significant difference among overall male but not for the female swimmers. There was a presence of RAE in the U-12 and U-15 but none in the U-18 boys’ category. Further analyses on the medal winners showed no RAEs on both gender. Physical attributes of the male swimmers, especially the early adolescents are suggested to influence the relative age effects in swimming.
    MeSH terms: Adolescent; Female; Health Services; Humans; Male; Physical Examination; Swimming; Athletic Performance; Athletes
  7. Dzul Azri Mohamed Noor, Baharudin Ibrahim, Vikneswaran, Murugaiyah, Balamurugan, Tangiisuran, Amer Hayat Khan, Fahad Saleem, et al.
    MyJurnal
    Medicine is an essential need for many people to treat their illness. Creating awareness among general public regarding medicines use and common illnesses can promote healthy lifestyles among them. The objectives of this study are to determine public knowledge and perception of medicines use and; to explore the pattern of medicines used in the past 3 months. A cross‐sectional survey was carried out among the general public in Pulau Pinang. People who were using medications during the time of the survey or in the last 3 months were invited to participate in the study. Only Malaysians ≥18 years were selected by convenient sampling to participate in the survey. The results of this study showed that most of the respondents were using some sort of medications during the last 3 months. Around 30% did not read the label of the medicines before use. Furthermore, participants had low awareness towards some aspects of medicines use such as the name of generic and brand medicines, overuse of paracetamol or vitamins and their side effects, discontinuation of antibiotics, storing ointments and syrups in refrigerator, and the side effects of medicines registered in Malaysia. Efforts are still needed to increase the awareness of medicines use among the general public. More quantitative studies are needed to understand the factors that may influence public knowledge and perceptions on the use of medicines.
    MeSH terms: Acetaminophen; Anti-Bacterial Agents; Awareness; Cross-Sectional Studies; Life Style; Malaysia; Ointments; Perception; Surveys and Questionnaires; Vitamin A; Vitamin K; Vitamins
  8. Lee XY, Selvadurai S, Cheah KY, Noh NB, Gan CB, Teng J, et al.
    MyJurnal
    Pharmacist-managed DMTAC has been set up in Malaysia government healthcare facilities to assist diabetic patients in improving their medication adherence level and glycaemic control. The aim of this study is to determine the effect of pharmacist involvement in a DMTAC programme on patient glycaemic control in 14 government health clinics in Kuala Lumpur and Putrajaya. This multi-centre retrospective study collected DMTAC patient demographics, medication regimens, glycated haemoglobin (HbA1c) levels, Modified Morisky Medication Adherence Scale (MMMAS) data, and percentages of understanding towards their medications (based on information retrieved and reviewed from their DMTAC booklets). The data were analysed using IBM SPSS Statistics Version 21.0. Fifty six patients were involved in this study. The mean HbA1c reduction (SD) of the pre- and post-intervention groups showed a statistically significant
    improvement of 1.0% (1.70) (p<0.001); decreasing from 10.7% (1.51) pre-intervention to 9.7% (1.75) post-intervention. The mean medication understanding score for the postintervention group was 97.6% (7.32), which was significantly higher than the preintervention group score of 92.2% (13.61) (p = 0.005). The mean MMMAS of the postintervention group was 7.4 (1.19), which was significantly higher than the pre-intervention group mean MMMAS of 6.5 (2.33) (p = 0.001). This study demonstrated an improvement in glycaemic control, medication understanding, and adherence level among T2DM patients who were enrolled in a pharmacist-managed DMTAC programme.
    Keywords: Diabetes, Diabetes Medication Adherence Therapy Clinic (DMTAC), Endocrine, Pharmacist, HbA1c, Medication adherence, Medication understanding
    MeSH terms: Adult; Ambulatory Care Facilities; Blood Glucose; China/ethnology; Diabetes Mellitus; Female; Hemoglobin A, Glycosylated; Humans; India/ethnology; Malaysia; Malaysia/ethnology; Male; Pamphlets; Pharmacists; Prospective Studies; Retrospective Studies; Cohort Studies; Medication Adherence
  9. Tan SF, Chong CP, Chooi WT
    MyJurnal
    An assessment on the use of acetaminophen (paracetamol) among consumers would
    provide guidance for implementing strategies to overcome the misuse of acetaminophencontaining
    products. This study aims to evaluate Malaysian consumers’ practices,
    perceptions and understanding regarding the use of acetaminophen. A semi-structured
    qualitative study utilising face-to-face interviews was conducted among 14 consumers
    aged 24 to 82 years old who live in Pulau Pinang, Malaysia. Transcripts of all the
    interviews were generated from audio tapes and were analysed for the issues and themes
    emerging from the text; the transcripts were independently coded and verified by experts.
    The consumers had a positive attitude towards the popularity, safety and efficacy of
    acetaminophen. The consumers predominantly used acetaminophen for pain and fever.
    Some consumers tended to increase the frequency and dosage of acetaminophen
    consumption if their condition persisted. Consumers had difficulty recognising the generic
    acetaminophen-containing products available in the market. Health literacy investigations
    have found that consumers have a lack of knowledge regarding the correct dosing
    regimen for acetaminophen in adults and children. The consumers were not aware of the
    precautions and toxicities of acetaminophen. To increase awareness of acetaminophen
    poisoning in Malaysia, the consumers suggested that educational tools regarding the
    proper use of acetaminophen are needed from the Ministry of Health and policy-makers.
    The information gained from this study emphasises the importance of educational
    interventions to educate the public on the proper use of acetaminophen in Malaysia.
    MeSH terms: Acetaminophen; Adult; Fever; Humans; Malaysia; Pain; Perception; Comprehension; Health Literacy
  10. Lim, Chin Choon, Asrul Akmal Shafie, Mohamed Azmi Ahmad Hassali
    MyJurnal
    Programmes that increase awareness of childhood obesity are vital to reducing the
    number of obese adults and adults with cardiovascular diseases. However, the
    effectiveness of these programmes must be evaluated to optimise resources for childhood
    obesity awareness programmes. The present study was conducted to assess the
    intermediate cost-effectiveness and provide a cost analysis of childhood obesity health
    promotion programmes. This quasi-experimental study compared the intermediate
    outcomes of the Sahabat Sihat and Be Best programmes over a six-month period. Data
    regarding health-related quality of life (EQ-5D and EQ-VAS), the Knowledge, Attitude and
    Practice questionnaire, and biomedical data were obtained from booklets prepared by
    MySihat for childhood obesity-related health promotion programmes. Data regarding cost
    was obtained from the expenditure records of the respective health promotion
    programmes. The intergroup and intragroup comparisons between the EQ-5D and
    EQ-VAS results, the Knowledge, Attitude, and Practice scores, and the biomedical data
    were explored using the Mann-Whitney and Friedman tests. Descriptive statistics were
    utilised in the analysis of the cost results. Be Best and Sahabat Sihat were successful in
    helping to prevent overweight respondents from becoming obese. The Attitude score was
    higher among the Sahabat Sihat cohort, but the Practice score was higher among the Be
    Best cohort. Be Best had a lower mean cost per participant and was more cost-effective
    than Sahabat Sihat.
    MeSH terms: Adult; Cardiovascular Diseases; Cost-Benefit Analysis; Health Expenditures; Health Promotion; Humans; Pamphlets; Quality of Life; Surveys and Questionnaires; Overweight; Pediatric Obesity
  11. Ab. Rahman, N.S., Abd. Majid F.A., Harisun, Y., Md. Salleh L.
    MyJurnal
    Effects of different types of solvent on the antioxidant and antibacterial activity of Quercus infectoria extract have not been well documented. Therefore, extraction process was conducted using conventional Soxhlet extraction with six different types of solvent (100% methanol, ethanol, acetone, water and 70% methanol, and ethanol). High performance liquid chromatography was implemented to identify gallic acid and tannic acid in the extracts. Water extracts contained the highest concentration of both gallic acid and tannic acid compared to other types of solvent; 51.14 mg/g sample and 1332.88 mg/g sample of gallic acid and tannic acid. Meanwhile, antioxidant and antibacterial activity were tested using DPPH free radicals scavenging and disc diffusion assay. Results demonstrated that water extracts gave the highest antioxidant activity (approximately 94.55%), while acetone extract gave the largest inhibition zone for disc diffusion assay (19.00mm respectively). The results also revealed rich sources of gallic acid and tannic acid in Q. infectoria which might provide a novel source of these natural antioxidant and antibacterial activity.
    MeSH terms: Acetone; Ethanol; Methanol; Anti-Bacterial Agents; Antioxidants; Chromatography, Liquid; Free Radicals; Gallic Acid; Solvents; Tannins; Water; Quercus; Hydrolyzable Tannins
  12. Shahapuzi, N.S., Taip, F. S., Aziz, N., Ahmedov, A.
    MyJurnal
    The presence of airflow during heating process is expected to increase heat uniformity in a closed heating chamber. Circulation of hot air increases the percentage of convective heat transfer. In this study effects of airflow on oven temperature, cake temperature and several cake qualities were investigated. Experimental studies were conducted in convective oven using two different baking modes; with and without airflow. During baking, oven temperatures and internal cake temperature were measured, and images of cake expansion were captured. Results of the study showed that the presence of airflow could maintain the oven temperature within a small range of set point temperature. Temperature in the oven exhibited ±5.5°C fluctuation, approximately 3.5% overshoot that occurred continuously during baking with airflow. On the contrary, higher overshoot (ranging from 15 to 30%) was observed in oven temperature without airflow. Airflow also showed a significant effect (p
    MeSH terms: Food; Hot Temperature; Heating; Maintenance; Temperature; Biological Processes; Physiological Processes
  13. Nordin, N. I. A. A., Ariffin, H., Hassan, M.A., Ibrahim, N. A., Shirai, Y., Andou, Y.
    MyJurnal
    The objective of this study was to evaluate the effects of milling methods on tensile properties of polypropylene (PP) / oil palm mesocarp fibre (OPMF) biocomposites. Two types of mills were used; Wiley mill (WM) and disc mill (DM). Ground OPMF from each milling process was examined for its particle size distribution and aspect ratio by sieve and microscopic analyses, respectively. Results showed that DM-OPMF had smaller diameter fibre with uniform particle size compared to the WM-OPMF. Surface morphology study by SEM showed that DM-OPMF had rougher surface compared to WM-OPMF. Furthermore, it was found that PP/DM-OPMF biocomposite had higher tensile strength compared to PP/WM-OPMF, with almost two-fold. Thus, it is suggested that small diameter and uniform size fibre may improve stress transfer and surface contact between the fibre and polymer matrix and cause well dispersion of filler throughout the polymer resulted in better tensile strength of PP/DM-OPMF Compared to PP/WM-OPMF biocomposite. Overall, it can be concluded that disc milling could serve as a simple and effective grinding method for improving the tensile properties of biocomposite.
    MeSH terms: Clothing; Dietary Fiber; Excipients; Particle Size; Plant Oils; Polymers; Polypropylenes; Tensile Strength
  14. Talib, R.A., Nor, M.Z.M., Noranizan, M.A., Chin, N.L., Hashim, K.
    MyJurnal
    This work describes the effects of different cooking temperatures in repetitive cooking-chilling (RCC) process on resistant starch (RS) content in fish crackers prepared in a ratio of 1:1 fish to sago starch formulation. In this work, three sets of four RCC cycles were performed on fish crackers, in which each set was cooked at fixed temperatures of 100, 115 and 121°C, respectively. The chilling temperature was fixed at 4°C in all cases. Subjecting the fish crackers to a higher cooking temperature for up to 4 cycles of RCC can increase the RS content. However, quality degradation was observed in the characteristics of the fish crackers. During the first RCC cycle, cooking at a higher temperature had caused the crackers to crack and burst. Besides, defragmentation to the shape of the fish cracker gels was also observed during the first RCC cycle, coupled with softer texture and high moisture content. When the products were subjected to frying, their linear expansion decreased, the texture became harder and the colour turned darker. This work demonstrated that the application of higher cooking temperature up to 4 RCC cycles was able to enhance the RS content in the fish crackers, but it was less able to attain the product's perfect shape. On the contrary, fish crackers that were exposed to lower cooking temperatures contained lower RS but with less shape damage.
    MeSH terms: Animals; Color; Cooking; Gels; Hardness; Hot Temperature; Starch; Temperature; Chills
  15. Ibrahim, M.N., Sarker, M.S.H., Ab. Aziz N., Mohd Salleh, P
    MyJurnal
    Field investigation on the operation of an industrial fluidized bed paddy dryer of 25 t/h capacity available in a processing complex of Padiberas Nasional Berhad (BERNAS) of Malaysia was carried out to assess its drying characteristics, energy consumption and quality of product during two paddy harvesting seasons. A grain drying simulation model was used to predict dryer performance which can be used as a basis for improving drying operations. For the first season (August-September), average drying rate was found to be 538 kg moisture/h to reduce moisture content (mc) from 36.98± 0.89% dry basis (db) to 27.58±0.79% (db) at 100-120°C of drying air temperature with a feed rate (capacity) of 7.75 t/h. In the second season (February-March), average drying rate was found to be 435 kg moisture/h to reduce mc from 28.14 ±0.68% (db) to 22.54 ± 0.69% (db) at 78-90°C drying air temperature with a feed rate of 9.5 t/h. The thermal and electrical energy consumptions were obtained as 7.57 and 0.97 MJ/kg water removed, respectively, for the first season, while 5.92 and 1.2 MJ/kg water removed for the second season. Higher head rice yield and whiteness and lower milling recovery were achieved during the first season than the second season at acceptable milling degree and transparency. Meanwhile, simulation results indicated that the dryer performed better in terms of increased drying capacity during the second than the first season; the dryer could be operated at 150°C to achieve almost double throughput capacity up to 20 t/h for the second season, while for the first season, high mc hindered the capacity to be at or below 7.75 t/h even when using higher a temperature of 160°C to reduce moisture to the desired final moisture of 24-25% (db). Proportion of slower vehicles based on users' opinion poll
    MeSH terms: Edible Grain; Desiccation; Malaysia; Oryza; Seasons; Temperature; Water; Biological Processes; Physiological Processes
  16. Hasmida, M.N., Liza, M. S., Nur Syukriah, A.R., Harisun, Y., Mohd Azizi, C. Y., Fadzilah Adibah, A. M.
    MyJurnal
    Quercus infectoria gall, which is known as manjakani in Malaysia, was traditionally used in treating diseases. The bioactive compounds from the galls can be extracted using various extraction methods. In this study, supercritical carbon dioxide (SC-CO2) extraction was used to study the effects of CO2 flow rate on the yield, total phenolic content and antioxidant activity of Q. infectoria extract by fixing the pressure and temperature at the highest density (P: 30 MPa, T: 40°C). The results were compared with those acquired from the Soxhlet extraction method. The results showed that the Soxhlet extraction had a higher percentage of extraction yield than SC-CO2 extraction. The selectivity of Q. infectoria extracts using SC-CO2 extraction was better than the Soxhlet extraction method. Meanwhile, the extraction efficiency using the SC-CO2 extraction ranged from 46% to 53%. The SC-CO2 extraction also yielded higher total phenolic content than using the Soxhlet extraction method when 2 mL/min of CO2 flow rate was applied (203.53 mg GA/g sample). This study also revealed that the extracts from the SC-CO2 extraction showed a better radical scavenging activity compared to the Soxhlet extraction when analysed using DPPH (2,2-diphenyl-1-picryl hydrazyl) radical scavenging activity assays.radical scavenging activity compared to the Soxhlet extraction when analysed using DPPH (2,2-diphenyl-1-picryl hydrazyl) radical scavenging activity assays.
    MeSH terms: Biphenyl Compounds; Carbon Dioxide; Malaysia; Phenols; Pressure; Temperature; Gas Scavengers; Quercus
  17. Marzzatul Farhana Maslan, Ayiesah Ramli
    MyJurnal
    Continuous professional development (CPD) has gained prominence in the last decade to meet improved self-development and health care services among health professionals. Being practitioners serving clients in health care, therefore, necessitates the importance of the physiotherapist’s participation in activities of CPD. This paper aims to identify how physiotherapists view CPD, barriers to its progress and its impact on healthcare practice. This is a qualitative study with one-to-one interview sessions involving open-ended questions to facilitate free flow of idea that are rich with information. Twentytwo physiotherapist (17 females and 5 males) participated. Four main themes were generated following analysis: (i) comprehension of what is CPD (ii) outcome of CPD (iii) barriers to undertaking CPD and (iv) strategies to improve participation in CPD. Further sub-themes were generated from the themes suggestive of physiotherapists’ awareness and concerns related to CPD activities and problems encountered when embarking on CPD participation. In conclusion, physiotherapists should recognise the importance of participation in CPD activities either for self-development or to provide effective health care services. The main barrier to CPD activities that was identified was a support system that facilitates enhancement in such activities. This has major implication such as mandatory participation in CPD among staff and for managers to ensure that an effective mechanism is in place such as funding, schedule events and moral support.
    MeSH terms: Awareness; Education, Continuing*; Female; Malaysia; Male; Morals; Comprehension; Qualitative Research; Physical Therapists
  18. Hong, Choon Ong, Tilahun, Surafel Luleseged, Tang, Suey Shya
    MyJurnal
    Many studies have been carried out using different metaheuristic algorithms on optimisation problems in various fields like engineering design, economics and routes planning. In the real world, resources and time are scarce. Thus the goals of optimisation algorithms are to optimise these available resources. Different metaheuristic algorithms are available. The firefly algorithm is one of the recent metaheuristic algorithms that is used in many applications; it is also modified and hybridised to improve its performance. In this paper, we compare the Standard Firefly Algorithm, the Elitist Firefly Algorithm, also called the Modified Firefly Algorithm with the Chaotic Firefly Algorithm, which embeds chaos maps in the Standard Firefly Algorithm. The Modified Firefly Algorithm differs from the Standard Firefly Algorithm in such a way that the global optimum solution at a particular iteration will not move randomly but in a direction that is chosen from randomly generated directions that can improve its performance. If none of these directions improves its performance, then the algorithm will not be updated. On the other hand, the Chaotic Firefly Algorithm tunes the parameters of the algorithms for the purpose of increasing the global search mobility i.e. to improve the attractiveness of fireflies. In our study, we found that the Chaotic Firefly Algorithms using three different chaotic maps do not perform as well as the Modified Firefly Algorithms; however, at least one or two of the Chaotic Firefly Algorithms outperform the Standard Firefly Algorithm under the given accuracy and efficiency tests.
    MeSH terms: Algorithms; Animals; Goals; Hybridization, Genetic; Solutions; Pharmaceutical Solutions; Fireflies
  19. Nima Khoshsirat, Nurul Amziah Md Yunus, Mohd Nizar Hamidon, Suhaidi Shafie, Nowshad Amin
    MyJurnal
    A numerical simulation and analysis was performed to investigate the effect of absorber and buffer layer band gap grading and on a Copper-Indium-Gallium-Diselenide (CIGS) solar cell. The software used is the Solar Cell Capacitance Simulator (SCAPS). The absorber and buffer layer energy band structures’ effect on the cell’s output parameters such as open circuit voltage, short circuit current density, fill factor and efficiency were extensively simulated. Two structures of the energy band gap were simulated and studied for each of the absorber and buffer layer. The simulation was done on the uniform structure in which the energy band gap is constant throughout the layer. It was then continued on the cell with graded band structure, where the energy band gap of the material is varied throughout the layer. It was found that the cell with graded band structure in absorber and buffer layer had demonstrated higher efficiency and better performance in comparison with the cell with uniform band gap structure.
    MeSH terms: Clothing; Copper; Gallium; Indium; Selenium; Software; Sunlight; Electric Capacitance
  20. Syerrina Zakaria, Nuzlinda Abdul Rahman
    MyJurnal
    The objective of this study was to explore the geographic distribution and temporal patterns of violent crime cases in Peninsular Malaysia by using the tools and techniques for spatial analysis. This study will also provide a general picture of violent crime patterns in Malaysia. The unit of analysis is district and the violent crime data from the year 2000 until 2009 were used in this study. In order to obtain the optimum number of components of crime in the space-time period, the space-time Normal Mixture Models were used. Based on the results of this model, the mapping of the crime occurrences was made. This map displays the spatial distribution of crime occurrence in 82 districts of Peninsular Malaysia. From this analysis, more violent crimes were shown to have occurred in developed states such as Selangor, Wilayah Persekutuan Kuala Lumpur and Johor. The findings of this study could be used by policy makers or responsible agencies to take any relevant actions in terms of crime prevention, human resource allocation and law enforcement so as to overcome this important issue in future.
    MeSH terms: Crime; Humans; Malaysia; Violence; Law Enforcement; Resource Allocation; Spatial Analysis
External Links