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      • KCI등재후보

        DECOMPOSING POVERTY-INEQUALITY LINKAGES OF SOURCES OF DEPRIVATION BY MEN-HEADED AND WOMEN-HEADED HOUSEHOLDS IN CAMEROON

        BONIFACE NGAH EPO,FRANCIS MENJO BAYE 중앙대학교 경제연구소 2016 Journal of Economic Development Vol.41 No.1

        We decompose poverty-inequality linkages of sources of deprivation by men-headed and women-headed households in Cameroon. Results indicate that (a) women-headed and gender-neutral households face more human and household capital deprivation and higher levels of inequality than their men-headed counterparts; and (b) whereas decreasing inequality between the men-headed and women-headed households would reduce the incidence and depth of human capital deprivation, reducing inequality among the men-and women-headed households will reduce the incidence and depth of household capital deprivation. Policies should simultaneously reduce household capital deprivations among men-headed and women-headed and human capital deprivation between these households.

      • 태양광발전에서 양수발전 시스템 연계방안

        키뉴이응가죠셉 ( Ngah Joseph Kinyuy ),홍성구 ( Seonggu Hong ) 한국농공학회 2019 한국농공학회 학술대회초록집 Vol.2019 No.-

        The use of renewable energy resources must increase rapidly in the near future in order to mitigate climate change. Intermittent renewable energy sources are characterized by a highly fluctuating, unpredictable and delocalized energy production, caused great problems in the balance between demand and supply. Electrical energy storage systems (EESS) could solve many problems in future electricity generation and distribution. Storing electricity by other alternative systems such as batteries, compressed air storage systems, etc. is more costly than electricity production by standby generator. The solar energy for electricity is fast growing in developing counties but it is facing some challenges, one of which being the high cost of Batteries and their short life span. The Main objective of this work is to determine the height and volume of a storage reservoir in the pump storage hydropower system with a pump as turbine. The power produced by the PV panels is transmitted to the load and the extra energy during off peak hours is used to pump the water from a lower reservoir to an upper reservoir. The pump used for water pumping is a DC pump so there is no inverter in the system. The water from the upper reservoir is released through into a centrifugal pump converted in a turbine to produce energy during peak load hours. The generator is an induction motor 0.6kW of the centrifugal pump functioning as a self-excited induction generator. The generator is connected in star 3-phase connection. For experimental purposes an engine pump is used as prime mover. As the water flow through the centrifugal pump impeller it creates a rotation at the motor which generate the AC voltage and current in 3-phase. The total energy from the PV-pumped storage hydropower system is expected to be 0.4 kWh of electricity. The efficient of the system is expected to be 53%. This mean that the system can be used instead of the battery storage system for electrical backup in PV system. The combination of renewable energy resource is an imperative option for electricity production at all time without intermittency. Future work should be done in automating the system instead of man control as it is time consuming.

      • 태양광발전에서 양수발전 시스템 연계방안

        응가죠셉키뉴이 ( Ngah Joseph Kinyuy ),홍성구 ( Hong Seong-gu ) 한국농공학회 2019 한국농공학회 학술대회초록집 Vol.2019 No.-

        The use of renewable energy resources must increase rapidly in the near future in order to mitigate climate change. Intermittent renewable energy sources are characterized by a highly fluctuating, unpredictable and delocalized energy production, caused great problems in the balance between demand and supply. Electrical energy storage systems (EESS) could solve many problems in future electricity generation and distribution. Storing electricity by other alternative systems such as batteries, compressed air storage systems, etc. is more costly than electricity production by standby generator. The solar energy for electricity is fast growing in developing counties but it is facing some challenges, one of which being the high cost of Batteries and their short life span. The Main objective of this work is to determine the height and volume of a storage reservoir in the pump storage hydropower system with a pump as turbine The power produced by the PV panels is transmitted to the load and the extra energy during off peak hours is used to pump the water from a lower reservoir to an upper reservoir. The pump used for water pumping is a DC pump so there is no inverter in the system. The water from the upper reservoir is released through into a centrifugal pump converted in a turbine to produce energy during peak load hours. The generator is an induction motor 0.6kW of the centrifugal pump functioning as a self-excited induction generator. The generator is connected in star 3-phase connection. For experimental purposes an engine pump is used as prime mover. As the water flow through the centrifugal pump impeller it creates a rotation at the motor which generate the AC voltage and current in 3-phase. The total energy from the PV-pumped storage hydropower system is expected to be 0.4 kWh of electricity. The efficient of the system is expected to be 53 %. This mean that the system can be used instead of the battery storage system for electrical backup in PV system. The combination of renewable energy resource is an imperative option for electricity production at all time without intermittency. Future work should be done in automating the system instead of man control as it is time consuming.

      • Willingness to pay for Halal transportation cost: The Stimulus-organism-response model

        A. H. NGAH,HD KIM,R.M.HANAFIAH,N. H. M. SALLEH,J. JEEVAN,N.M. ASRI 국제이네비해양경제학회 2019 International Journal of e-Navigation and Maritime Vol.12 No.1

        Halal transportations will ensure that the Halal status of the products will be preserved. Halal certification is believed to increase the operation cost for the transport providers, which reflect the price paid by customers who choose to buy products transported by Halal transportation. Hence, it is worthwhile to investigate the willingness of Muslim consumers to pay extra for the Halal transportation cost. The study aims to identify factors influencing Muslim consumers’ attitude towards their willingness to pay for Halal transportation. Using the stimulus-organism-response model, attitude which represents the organism factor will be treated as a mediator for variables representing the stimulus factors and the variable for the response. On the other hand, the study will also examine the effect of knowledge as a moderating factor. The data was collected from Muslim consumers in Kuala Lumpur. Applying the purposive sampling method with a self-administered survey, 202 respondents agreed to participate in the study. The findings revealed that awareness and perceived behavioural control are a stimulus towards attitude, and attitude is a significant organism on willingness to pay. The study also found that attitude mediates the relationship between awareness and perceived behavioural control towards the willingness to pay for Halal transportation. Additionally, the knowledge has a moderating effect of the relationship between attitude and the willingness to pay. The findings of the study are not only beneficial for the Muslim community in Malaysia, but also the Muslims around the world.

      • KCI등재

        Duration of Heads of State in Power and Economic Growth in Sub-Saharan Africa

        Limi Kouotou Hibrahim,Boniface Ngah Epo 중앙대학교 경제연구소 2023 Journal of Economic Development Vol.48 No.1

        This paper evaluates the impact of the duration of heads of state in power on economic growth on a panel of 41 countries in sub-Saharan Africa over the period 1990-2016. The results find diminishing returns after the optimal threshold of twelve, eleven and fifteen years for sub-Saharan Africa, English-speaking and French-speaking African countries respectively. The results are robust in both static and dynamic settings as well as for fixed effects related to the educational profile of heads of state

      • KCI등재

        Written Asthma Action Plan Improves Asthma Control and the Quality of Life among Pediatric Asthma Patients in Malaysia: A Randomized Control Trial

        Juliawati Muhammad,Najwa Diyana Ngah,Imran Ahmad 대한가정의학회 2023 Korean Journal of Family Medicine Vol.44 No.1

        Background: A written asthma action plan (WAAP) is one of the treatment strategies to achieve good asthma con-trol in children.Methods: This randomized controlled trial was conducted to observe the effect of WAAP on asthma control and quality of life using the Asthma Control Questionnaire and Pediatric Asthma Quality of Life Questionnaire (PAQLQ) at baseline and after 3 months. A repeated measure analysis of variance was used to analyze the mean score differ-ence between the two groups.Results: There was no significant difference in mean score for asthma control at baseline between groups (F[degree of freedom (df)]=1.17 [1, 119], P=0.282). However, at 3 months, a significant difference in mean scores between groups was observed (F[df]=7.32 [1, 119], P=0.008). The mean±standard deviation (SD) scores in the intervention and control groups were 0.96±0.53 and 1.21±0.49, respectively. For the analysis of the PAQLQ, no significant differ-ence was observed in the mean score for the quality of life baseline in both groups. There were significant mean score changes for the quality of life (F[df]=10.9 [1, 119], P=0.001) at 3 months follow-up, where those in the inter-vention group scored a mean±SD score of 6.19±0.45, and those in the control group scored 5.94±0.38. A time-group interaction analysis using repeated-measures analysis of variance showed significant differences in mean score changes (F[df]=5.03 [1, 116], P=0.027) and (F[df]=11.55 [1, 116], P=0.001) where a lower mean score was observed in the intervention group, indicating better asthma control and quality of life, respectively. A significant (P<0.001) negative Pearson correlation between asthma control and quality of life (-0.65) indicated a moderate correlation.Conclusion: WAAP, along with standard asthma treatment, improves asthma care.

      • SCIESCOPUSKCI등재

        A New Reliable Algorithm for Identifying Types of Partial Discharge Detected through Ultrasonic Emission

        Hapeez, Mohammad Shukri,Hamzah, Ngah Ramzi,Hashim, Habibah,Abidin, Ahmad Farid The Korean Institute of Electrical Engineers 2014 Journal of Electrical Engineering & Technology Vol.9 No.1

        This paper presents a simple, consistent and reliable technique to identify detected partial discharges (PD) using an acoustic ultrasonic method. A new reliable algorithm named 'Simple Partial Discharge Identifier' (SPDI) is proposed to perform identification process of the detected ultrasonic signals of PD. Experimental works based on recommended practices were setup and the ultrasonic signals of the PD were recorded. The PD data is then employed as the reference data. The SPDI developed has been tested against commonly used models in Neural Network (NN). Results from the SPDI algorithm shows more reliable results compared to NN models results. Comparison made on the mean square error (MSE) results shows SPDI produces the desired outcome with lower MSE in 97.17% of trials. Low error of SPDI indicates a high reliability to be applied in the identification of PD.

      • KCI등재
      • KCI등재

        Delineating inflammatory bowel disease through transcriptomic studies: current review of progress and evidence

        Seow-Neng Chan,Eden Ngah Den Low,Raja Affendi Raja Ali,Norfilza Mohd Mokhtar 대한장연구학회 2018 Intestinal Research Vol.16 No.3

        Inflammatory bowel disease (IBD), which comprises of Crohn’s disease and ulcerative colitis, is an idiopathic relapsing and remitting disease in which the interplay of different environment, microbial, immunological and genetic factors that attribute to the progression of the disease. Numerous studies have been conducted in multiple aspects including clinical, endoscopy and histopathology for the diagnostics and treatment of IBD. However, the molecular mechanism underlying the aetiology and pathogenesis of IBD is still poorly understood. This review tries to critically assess the scientific evidence at the transcriptomic level as it would help in the discovery of RNA molecules in tissues or serum between the healthy and diseased or different IBD subtypes. These molecular signatures could potentially serve as a reliable diagnostic or prognostic biomarker. Researchers have also embarked on the study of transcriptome to be utilized in targeted therapy. We focus on the evaluation and discussion related to the publications reporting the different approaches and techniques used in investigating the transcriptomic changes in IBD with the intention to offer new perspectives to the landscape of the disease.

      • KCI등재

        A New Reliable Algorithm for Identifying Types of Partial Discharge Detected through Ultrasonic Emission

        Mohammad Shukri Hapeez,Ngah Ramzi Hamzah,Habibah Hashim,Ahmad Farid Abidin 대한전기학회 2014 Journal of Electrical Engineering & Technology Vol.9 No.1

        This paper presents a simple, consistent and reliable technique to identify detected partial discharges (PD) using an acoustic ultrasonic method. A new reliable algorithm named ‘Simple Partial Discharge Identifier’ (SPDI) is proposed to perform identification process of the detected ultrasonic signals of PD. Experimental works based on recommended practices were setup and the ultrasonic signals of the PD were recorded. The PD data is then employed as the reference data. The SPDI developed has been tested against commonly used models in Neural Network (NN). Results from the SPDI algorithm shows more reliable results compared to NN models results. Comparison made on the mean square error (MSE) results shows SPDI produces the desired outcome with lower MSE in 97.17% of trials. Low error of SPDI indicates a high reliability to be applied in the identification of PD.

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