Displaying publications 41 - 60 of 358 in total

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  1. Kian Tsong Ho, Mohd Zainal Abidin Ab Kadir, Mahdi Izadi
    MyJurnal
    In this paper, cap and pin porcelain insulator was studied under an environment with different levels
    of humidity. The electric field strength and voltage distribution profile along the insulator string was
    simulated using a computational software package. In this study, ANSYS Maxwell based on the Finite
    Element Method (FEM) was used to simulate the short standard insulator string. The short standard
    insulator string was modelled as a five-unit cap and pin porcelain insulator that was stacked according
    to the IEC 60383 standard. Different humidity levels measured using relative humidity is applied to
    the insulator. From this simulation, the locations within the insulator under high electric field stress are
    identified when different humidity is applied.
    Matched MeSH terms: Environment
  2. Md. Munir Hayet Khan, Nur Shazwani Muhammad, Ahmed El-Shafie
    MyJurnal
    Prolonged drought conditions have adverse environmental and socio-economic impacts due to unmet water demands. Defining drought is difficult because of its onset and ending time. Therefore, characterisation of drought is essential for drought management operations. Thus, drought indices come in handy and are a practical approach to assimilate large amounts of data into quantitative information which can then be applied for drought forecasting, declaring drought levels, contingency planning and impact assessments. This study analyses drought events using indices, namely SPI and Deciles Index, computed with DrinC software program but are not popular in Malaysia. It is observed that both indices are identical and suitable for drought occurrences.
    Matched MeSH terms: Environment
  3. Nabilah Zainal Abidin, Fawazul Khair Ibrahim, Raja Nafida Raja Shahminan
    MyJurnal
    This paper describes the culture of Traditional Malays, in particular the use of sustainable furniture inside a Traditional Malay House (TMH). The sample houses for this study were retrieved from archived reports, from the Centre for Built Environment in the Malay World (KALAM), Universiti Teknologi Malaysia (UTM). Data collected were analysed using Componential Analysis for the presence of components (based on drawings of archival reports as well as photographic evidence from site visits). The findings showed that the Malays used a variety ofsustainable furniture in their houses. Additionally, their homes had built-in furniture, which indicated the houses were pre-designed based on its user.
    Matched MeSH terms: Environment Design
  4. Nurdiyana Zainal Abidin, Raja Nafida Raja Shahminan, Fawazul Khair Ibrahim
    MyJurnal
    Sustainability is an important factor in designing vernacular architecture, including vernacular palace architecture; the latter refers to low-rise buildings similar to Traditional Malay Houses (TMH). However, the Istana Lama Seri Menanti is a 4-storey mid-rise vernacular palace which was designed with sustainability in mind. This mid-rise element of the palace communicates the vernacular architecture of TMH in Negeri Sembilan whereas sustainable designs are factored in environmentally friendly materials, construction methods, and the environmental impact of the building culturally and economically. This research was aimed at examining the sustainability approach of Istana Lama Seri Menanti as a mid-rise vernacular palace in the early 20th Century, and its impact on the current generation after 109 years. The research methodologies include case and precedent studies of vernacular palaces in Malaysia as well as interviews with experts in the field. In conclusion, the architectural sustainability of Istana Lama Seri Menanti had taken into account timber availability, consumption of naturally available resources, designs with minimal environmental impact and high cultural importance in the building design with the ultimate aim of conserving it for future generations.
    Matched MeSH terms: Environment
  5. Muhamad Khuzaifah Ismail, Meng Cheng Lau, Mohammad Faidzul Nasrudin, Haslina Arsha
    MyJurnal
    The walking of a humanoid robot needs to be robust enough in order to maintain balance in a dynamic environment especially on uneven terrain. A walking model based on multi-sensor is proposed for a Robotis DARwIn-OP robot named as Leman. Two force sensitive resistor (FSRs) on both feet equipped to Leman to estimate the zero moment point (ZMP) alongside with accelerometer and gyrosensor embedded in the body for body state estimation. The results show that the FSRs can successfully detect the unbalanced walking event if the protuberance exists on the floor surface and the accelerometer and gyrosensor (Inertial Measurement Unit, IMU) data are recorded to tune the balancing parameter in the model.
    Matched MeSH terms: Environment
  6. Zal U'yun Wan Mahmood, Norfaizal Mohamad, Nur Nazirah Johari
    MyJurnal
    Accumulation kinetic trends of cesium and cadmium in the Penaeus monodon were studied using Cs-134 and Cd-109 as a tracer. The objective of this study was to quantify the uptake and loss/depuration kinetic of these two radionuclides in the Penaeus monodon. Uptake and loss/depuration kinetic of these two radionuclides in the Penaeus monodon were varied widely, displayed a simple double kinetic model of linear and exponential trend with time unless modified by moulting at the stage in the mount cycle. Therefore, the variation of Cs-134 and Cd-109 bio-concentration factor could be concluded considerably influence by moulting cycle, environmental and biological condition as well as physico-chemical that direct effects on their uptake and loss/depuration kinetic.
    Matched MeSH terms: Environment
  7. Aburas, Maher Milad, Sabrina Ho Abdullah, Mohammad Firuz Ramli, Zulfa Hanan Ash'aari
    MyJurnal
    Remote sensing and geographic information system techniques are significant and popular approaches that have been used in recent years to measure and map urban growth patterns. This paper primarily aims to provide a basis for a literature review of urban growth measurement and mapping by using different methods. For this purpose, the general characteristics of measuring and mapping urban growth patterns are described and classified. The strengths and weaknesses of the various methods have been identified from an analysis and discussion of the characteristics of the techniques. Results of reviews confirm that combining quantitative and qualitative techniques, such as Shannon approach and change detection, to measure and map urban growth patterns will improve understanding of the phenomenon of urban growth. Moreover, using social and economic data such as population and income data will improve understanding of the relationships between causes and effects. The integration of social and economic factors with quantitative and qualitative techniques will contribute to a perfect evaluation of urban growth patterns and land use changes, taking technical, social, economic, spatial, and temporal factors into account.
    Matched MeSH terms: Social Environment
  8. Cross L, Atherton G, Wilson AD, Golonka S
    Front Psychol, 2017;8:1798.
    PMID: 29081761 DOI: 10.3389/fpsyg.2017.01798
    Rhythmically coordinating with a partner can increase pro-sociality, but pro-sociality does not appear to change in proportion to coordination success, or particular classes of coordination. Pro-social benefits may have more to do with simply coordinating in a social context than the details of the actual coordination (Cross et al., 2016). This begs the question, how stripped down can a coordination task be and still affect pro-sociality? Would it be sufficient simply to imagine coordinating with others? Imagining a social interaction can lead to many of the same effects as actual interaction (Crisp and Turner, 2009). We report the first experiments to explore whether imagined coordination affects pro-sociality similarly to actual coordination. Across two experiments and over 450 participants, mentally simulated coordination is shown to promote some, but not all, of the pro-social consequences of actual coordination. Imagined coordination significantly increased group cohesion and de-individuation, but did not consistently affect cooperation.
    Matched MeSH terms: Social Environment
  9. Lokman Hakim Sulaiman
    MyJurnal
    Dengue is the most rapidly increasing arthropodborne
    disease globally. The disease burden has increased
    exponentially, doubling almost every decade from the
    estimated 8.3 million cases in 2010 to about 58.4 million
    cases in 2013.1
    The number of countries reporting
    dengue has also increased. Before 1970, less than 9
    countries reported dengue but now it has been reported
    in more than 100 countries worldwide. It is transmitted
    by two species of Aedes mosquito, Aedes aegypti and Ae.
    albopictus. (Copied from article).
    Matched MeSH terms: Environment
  10. Li LX, Abdul Rahman SS
    R Soc Open Sci, 2018 Jul;5(7):172108.
    PMID: 30109052 DOI: 10.1098/rsos.172108
    Students are characterized according to their own distinct learning styles. Discovering students' learning style is significant in the educational system in order to provide adaptivity. Past researches have proposed various approaches to detect the students' learning styles. Among all, the Bayesian network has emerged as a widely used method to automatically detect students' learning styles. On the other hand, tree augmented naive Bayesian network has the ability to improve the naive Bayesian network in terms of better classification accuracy. In this paper, we evaluate the performance of the tree augmented naive Bayesian in automatically detecting students' learning style in the online learning environment. The experimental results are promising as the tree augmented naive Bayes network is shown to achieve higher detection accuracy when compared to the Bayesian network.
    Matched MeSH terms: Environment
  11. Tawfikur Rahman, Motakabber, S.M.A., Ibrahimy, M.I.
    Scientific Research Journal, 2017;14(2):17-34.
    MyJurnal
    In recent years, the utility grid system is more essential for the power
    transmission and distribution system because it cannot produce harmful
    gases or no discharge waste in the environment. PWM based phase
    synchronous invert systems are generally utilised in the high efficiency
    energy supply, long distance and higher power quality. The inverter output
    voltage depends on the coupling transformer, input sources and invert
    controllers. An inverter using a three leg IGBT has been designed for utility
    grid and simulated by using MATLAB2014a. In this paper, both sides of
    the LCL filters are used for removing the DC ripple current, reducing the
    noise and synchronous the output phase between inverter and the utility
    grid. The PWM controller has created pulse signal to control the inverter,
    electronic switches and precisely synchronise with grid line frequency. In
    this system, the input DC voltage 500V, switching frequency 1.65 kHz, grid
    frequency 50Hz, 20 km feeder (resistance, inductance and capacitance per
    unit length, which are 0.1153, 1.05e-3 and 11.33e-09 ohms/km) with 30MW
    three phase load (active and inductive reactive power which are 30e6 W
    and 2e6 var) and also a balanced utility grid load of star configuration (00,
    1200, and 2400 degree) are considered in the design. On the other hand,
    three phase transformer consists of three signal phase transformers, normal
    power 100e3, magnetization resistance and inductance which are 500 pu and
    416.67pu are considered in this design. The system conversion efficiency
    is 99.94% and 99.96%, while the total THD are 0.06% on inverter side
    and 0.04% on grid side.
    Matched MeSH terms: Environment
  12. Omar WM
    Trop Life Sci Res, 2010 Dec;21(2):51-67.
    PMID: 24575199
    Algal communities possess many attributes as biological indicators of spatial and temporal environmental changes. Algal parameters, especially the community structural and functional variables that have been used in biological monitoring programs, are highlighted in this document. Biological indicators like algae have only recently been included in water quality assessments in some areas of Malaysia. The use of algal parameters in identifying various types of water degradation is essential and complementary to other environmental indicators.
    Matched MeSH terms: Environment; Environmental Monitoring
  13. Tran CD, Ibrahim R, Asirvadam VS, Saad N, Sabo Miya H
    ISA Trans, 2018 Apr;75:236-246.
    PMID: 29478749 DOI: 10.1016/j.isatra.2017.12.010
    The emergence of wireless technologies such as WirelessHART and ISA100 Wireless for deployment at industrial process plants has urged the need for research and development in wireless control. This is in view of the fact that the recent application is mainly in monitoring domain due to lack of confidence in control aspect. WirelessHART has an edge over its counterpart as it is based on the successful Wired HART protocol with over 30 million devices as of 2009. Recent works on control have primarily focused on maintaining the traditional PID control structure which is proven not adequate for the wireless environment. In contrast, Internal Model Control (IMC), a promising technique for delay compensation, disturbance rejection and setpoint tracking has not been investigated in the context of WirelessHART. Therefore, this paper discusses the control design using IMC approach with a focus on wireless processes. The simulation and experimental results using real-time WirelessHART hardware-in-the-loop simulator (WH-HILS) indicate that the proposed approach is more robust to delay variation of the network than the PID.
    Matched MeSH terms: Environment
  14. Chia SR, Chew KW, Show PL, Yap YJ, Ong HC, Ling TC, et al.
    Biotechnol J, 2018 Jun;13(6):e1700618.
    PMID: 29356369 DOI: 10.1002/biot.201700618
    Microalgae are considered promising feedstock for the production of biofuels and other bioactive compounds, yet there are still challenges on commercial applications of microalgae-based products. This review focuses on the economic analysis, environmental impact, and industrial potential of biofuels production from microalgae. The cost of biofuels production remains higher compared to conventional fuel sources. However, integration of biorefinery pathways with biofuels production for the recovery of value-added products (such as antioxidants, natural dyes, cosmetics, nutritional supplements, polyunsaturated fatty acids, and so forth) could substantially reduce the production costs. It also paves the way for sustainable energy resources by significantly reducing the emissions of CO2 , NOx , SOx , and heavy metals. Large-scale biofuels production has yet to be successfully commercialized with many roadblocks ahead and heavy competition with conventional fuel feedstock as well as technological aspects. One of the prominent challenges is to develop a cost-effective method to achieve high-density microalgal cultivation on an industrial scale. The biofuels industry should be boosted by Government's support in the form of subsidies and incentives, for addressing the pressing climate change issues, achieving sustainability, and energy security.
    Matched MeSH terms: Environment
  15. Wiyono ES, Ihsan
    Trop Life Sci Res, 2018 Mar;29(1):1-15.
    PMID: 29644012 DOI: 10.21315/tlsr2018.29.1.1
    In order to manage blue swimming crabs in Pangkajene Kepulauan, management measures are required. Since the environment which affects the abundance of the blue swimming crab varies seasonally, it is necessary to take into account the seasonal nature with the aim of developing a management strategy. The objectives of this study are to define the abundance of and fishing season of blue swimming crabs in the Pangkajene Kepulauan waters, South Sulawesi, Indonesia. The fishing season was analysed using seasonal index analysis, while fish abundance was analysed by means of Equilibrium-Schaefer. The result of this study demonstrated that fishermen allocate their fishing gear all year, although the fish catch is seasonal. Based on analysis of the result, the fishing season for the blue swimming crabs is short. The peak fishing season starts in May and finishes in June. However, in order to enable their families to earn a living, fishermen operated their fishing gear throughout the year. As a result, both catch landing and effort were close to maximum sustainable yield (MSY). In order to reduce fishing pressure, it is necessary to reduce fishing gear and have a seasonal arrangement regarding fishing gear allocation.
    Matched MeSH terms: Environment
  16. Sharmini S, Jamaiyah H, Jaya Purany SP
    Malays Fam Physician, 2010;5(1):13-8.
    PMID: 25606180 MyJurnal
    This survey set out to describe patient registries available in the country, to determine their security features, data confidentiality, extent of outputs produced and data quality of the registries.
    Matched MeSH terms: Environment
  17. Mohd Syazwan, S., Aqbal, H.A., Azhar, H., Zulhadi, M., Sharifah Allyana, S.M.R., Baba M.D.
    MyJurnal
    Pedestrians' fatality trend in road crashes has been improving in recent years though it remains third in rank behind
    motorcyclists and car occupants. Based on the statistics, young pedestrians were the most affected group and the
    commonest injury regions were head and legs. Pedestrian crashes occurred primarily in rural areas and straight roads
    and at low light environment, and often involve cars and motorcycles. In addition to existing issues of careless and
    illegal crossing practices, there are potential new hazards face by pedestrian, which are mobile electronic device use
    and electric vehicle, especially when crossing roads. Road safety programs and interventions shall consider these new
    issues.
    Matched MeSH terms: Environment
  18. Mohamed Khairi Termizi, Mazlan Ismail
    MyJurnal
    Various claims have been made about the extinction of Malay Reservation Land in the country. Before
    independence, the land depreciation was due to the acquisition of land by the British colonial
    government for mining, opening of new villages during the communist threat and the mortgage and
    sale activities by the Malay landowners to non-Malays. After independence, land depreciation linked
    with the acquisition of land by the government through the Land Acquisition Act, 1960. This study is a
    content analysis study involving material derived from the secondary source text and earlier research
    findings. Emphasis is given to analyze the statistical size of Malay Reservation Land in the country.
    Results show that the allegations regarding the depreciation trend of the Malay Reservation Land is
    inaccurate and misleading. While the analysis of the size of the Malay Reservation Land found that the
    actual percentage of Malay Reservation Land in 2009 was 30.13 percent instead of 11.83 percent as
    claimed. The percentage grew steadily in 2013 to 31.85 percent. The analysis also found that there was
    confusion about the actual size of Malay Reservation Land in the country.
    Matched MeSH terms: Environment
  19. Adam, M.B., Norazman, N., Mohamad Kasim, M.R.
    MATEMATIKA, 2018;34(1):113-123.
    MyJurnal
    Logging activity is one of the most important activities for tropical countries
    including Malaysia, as it produces quality trees for papers. One of the important tree
    species is the Acacia Mangium which it produces a soft tree for papermaking enterprises.
    The papers are exported to Europe and countries which have high demand for paper
    due to the rapid development of the printing industry. Thus we analyzed the height for
    individual trees. We investigate the maximum height of the trees from 1990 to 2006
    and we fit the data using extreme value model. Some of the data are missing and three
    imputation methods we used to solve this problem.
    Matched MeSH terms: Environment
  20. Mohammed Saleh Alosani, Rushami Zien Yusoff, Ali Musaed Alansi
    MyJurnal
    Improving organizational performance is the main objective of any organization. Six
    Sigma is one of the most important approaches to improve performance and sustain
    competitive advantage. This article reviewed the literature related to organizational
    performance and explains the potential impact of Six Sigma and innovation culture on
    organizational performance. Given that previous studies have reported inconclusive
    results, this paper tries to establish a mechanism to explain the role of Six Sigma in
    improving organizational performance. Therefore, based on the theoretical foundation
    and comprehensive review of previous literature, a research framework is proposed.
    This proposed framework is grounded in the implementation of Six Sigma projects; it
    also establishes that innovation culture can help organizations to achieve success in a
    turbulent business environment.
    Matched MeSH terms: Environment
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