Mobile Multihop Relay (MMR) network is an attractive and low-cost solution for expanding service coverage and enhancing throughput of the conventional single hop network. However, mobility of Mobile Station (MS) in MMR network might lead to performance degradation in terms of Quality of Service (QoS). Selecting an appropriate Relay Station (RS) that can support data transmission for high mobility MS to enhance QoS is one of the challenges in MMR network. The main goal of the work is to develop and enhance relay selection mechanisms that can assure continuous connectivity while ensuring QoS in MMR network using NCTUns simulation tools. The approach is to develop and enhance a relay selection for MS with continuous connectivity in non-transparent relay. In this approach, the standard network entry procedure is modified to allow continuous connectivity with reduced signaling messages whenever MS joins RS that is out of Multihop Relay Base Station (MRBS) coverage and the relay selection is.....

16107 hits

A study on the alkaloid composition on the Malaysian Annonaceae species, i.e Popowia perakensis King has been carried out. Barks of Popowia perakensis were extracted with hexane, dichloromethane and methanol, respectively. Dichloromethane extract further underwent the acid base treatment to give the alkaloidal crude extract. Isolation of compounds was carried out using various chromatography techniques including column chromatography and thin layer chromatography. Spectroscopic methods notably 1 H, 13 C NMR, IR, UV and GC-MS spectroscopy were utilized to identify pure compounds in addition to comparison of reported data. Two azaanthraquinones alkaloids namely cleistopholine 1 and 6-methoxycleistopholine 2 together with simple isoquinolone alkaloid, N-methylcorydaldine 3 had been isolated. All three alkaloids are known but they were isolated for the first time from this species. Cleistopholine 1 was tested for Dipeptidyl peptidase IV (DPP IV) inhibition to investigate its potential anti.....

9779 hits

This  study  examined  the  effect  of  Mindfulness  Acceptance  Commitment-Physical  (MAC-P)  on anaerobic performance. The MAC-P specifically designed for anaerobic training, and has its validity and  reliability.  The  study used  non-randomized  control  group  pretest-posttest  design.  Research instrument consisted of Wingate Test to evaluate anaerobic performance in terms of peak power, mean power and anaerobic fatigue index. Subjects were semester one Coaching Science students from Sultan Idris Education University, divided into MAC-P (n = 21), PST (n = 21) and control (n = 21) group.  Analysis  of  Covariance  (ANCOVA)  showed  significant  effect  of  the  intervention  on  the achievement of post anaerobic peak power [F(2, 59) = 19.18, p < 0.05] and mean power [F(2, 59) = 3.60, p < 0.05]. However, the interventions did not have significant effect on post anaerobic fatigue. In conclusion, the MAC-P has prominent effect on  anaerobic performance.....

7171 hits

The aim of this study is to examine the significant of Islamic ethics in the development of ethicalaccounting graduates through accounting educator’s perspectives. This paper used a survey questionnaire to collect data from accounting educators from eight public universities in Malaysia. Survey items were developed based on Islamic ethics instrument adapted from AAOIFI Code of Ethics for Accountants and Auditors (1998), and Accounting Ethical Development model (Fisher et al., 2005). The findings provide evidence that accounting educators have similar consensus that Islamic ethics principles were acceptable and important to be incorporate in accounting curriculum in order to generate ethical future accountants. Further, respondent encourage accounting educators to integrate Islamic ethics in their teaching and learning process. Overall, the findings of the study are expected to provide a guideline for the university administrator to enhance the improvement of accounting curriculum..

11486 hits

Identifying the local time scale of the torrential rainfall pattern through Singular Spectrum Analysis (SSA) is useful to separate the trend and noise components. However, SSA poses two main issues which are torrential rainfall time series data have coinciding singular values and the leading components from eigenvector obtained from the decomposing time series matrix are usually assesed by graphical inference lacking in a specific statistical measure. In consequences to both issues, the extracted trend from SSA tended to flatten out and did not show any distinct pattern. This problem was approached in two ways. First, an Iterative Oblique SSA (Iterative OSSA) was presented to make adjustment to the singular values data. Second, a measure was introduced to group the decomposed eigenvector based on Robust Sparse K-means (RSK-Means). As the results, the extracted trend using modification of SSA appeared to fit the original time series and looked more flexible compared to SSA...

1477 hits

7985 hits

Kajian ini bertujuan membentuk instrumen untuk mengenal pasti motif penglibatan remaja dalam bidang sukan. Instrumen Motif Penglibatan Sukan (MPS) dibina melalui dua fasa penyelidikan iaitu fasa penggubalan item dan ujian psikometrik instrumen. Pengubalan item soal selidik dilakukan mengikut proses Nominal Group Technique terhadap remaja yang aktif dalam sukan. Sebanyak 75 item telah terhasil daripada fasa penggubalan item soal selidik. Analisis faktor dan nilai pekali Alpha Cronbach digunakan untuk menguji bilangan faktor dan kebolehpercayaan dalaman data. Soal selidik MPS telah ditadbir ke atas 582 orang remaja yang aktif bersukan bagi mendapatkan analisis faktor dan kebolehpercayaan instrumen. Hasil proses analisis komponen prinsipal soal selidik MPS mempunyai 58 item merangkumi sembilan faktor iaitu Menaikkan Nama Negara, Kesihatan dan Kecergasan, Peningkatan Kemahiran, Inginkan Cabaran, Inginkan Kejayaan, Kebanggaan Keluarga, Kebanggaan Diri, Kestabilan Emosi dan Jaminan Masa Depa.....

13496 hits

Microalgae are known as an alternative source of biomass energy to replace fossil fuels. The aim of the present study is to optimise the growth conditions and increase the lipid, carbohydrate and biomass productivity of Tetradesmus obliquus UPSI-JRM02 using response surface methodology with Design Expert software. Four variables (nitrogen concentration, temperature, pH, and light intensity) were optimised to enhance T. obliquus productivity. The highest lipid (33 ± 1.2mg/L/day), carbohydrate (51 ± 1.5 mg/L/day) and biomass (115 ± 1.4 mg/L/day) productivity were produced at a nitrogen concentration of 400 mg/L NO3
at 36 C with pH of 9.8, and light intensity of 23500 lux. The fatty acid methyl ester contains polyunsaturated fatty acid (C18:2, C18:3) and saturated fatty acid (C16:0). These results demonstrate the potential of T. obliquus to produce promising feedstock for biofuel production.  ..

4510 hits

Algae often reduce aesthetic values and usability of freshwater as they can grow excessively and present in high biomass concentration. A biological approach to control algae growth by using plant-derived substances has received significant attention due to its minimal undesirable effects. To date, numerous herbaceous plants species are known to have antimicrobial properties. Nevertheless, their inhibitory potential against freshwater algae remains widely unexplored. This study attempted to explore algae inhibition potential using extracts from five herbaceous plants including Melastoma malabathricum, Cosmos caudatus, Pistia stratiotes, Etlingera elatior, and Cinnamomum cassia. Potential inhibitory effect of each plant extract on algae growth was determined through the percentage of algae growth reduction as compared to the control. Our results revealed that all, except Cinnamomum cassia, gave positive inhibitory effects on algae growth. The highest algae growth inhibition wasobserved .....

5470 hits

Prawn allergy is a common cause of allergic reactions in countries where crustacean is a famous seafood. Macrobrachium rosenbergii (giant river prawn) is declared as a local major food allergens, causes severe symptoms like asthma and anaphylactic shock.Therefore, the goal concerning this research is to identify the allergenicity of heat treated of M. rosenbergii. Prawn extracts have been prepared using fresh raw prawn and three heat-treated prawn flesh (boiled, steamed, fried), then afterward analyzed by the usage of sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). Allergenic proteins were identified by means of immunoblotting by the use of sera from 30 prawnallergic patients. The identities of selective major allergens were then determined by massspectrometry analysis. The raw prawn has 27 protein fractions between 6 to 207 kDa, while the heat-treated prawns have reduced number of protein bands. Six prominent bands at 72, 65, 48, 38, 36, and 30 kDa were considere.....

2191 hits