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      • Effective Corporate Governance and Internal Audit Role: A Faith based Approach

        ( Owolabi Sunday Ajao ),( Dada Samuel Olajide ) 글로벌기독교세계관학회 2011 학문과기독교세계관 Vol.3 No.-

        The issue of Corporate Governance is a global phenomenon irrespective of geographical location and economic classification. This paper reviews various existing theories of corporate governance, including stewardship theory, market theory and agency theory. The writers also proposed a postulation called Win-Win Model of Corporate Governance. The postulation is based on Faith and Biblical principles. Internal audit roles in instituting effective corporate governance considering biblical principles were also examined. The paper was concluded by way of recommendations that the effective corporate governance that is lacking globally can be achieved by applying biblical and faith based principles.

      • KCI우수등재

        Predicting the Greenhouse Air Humidity Using Artificial Neural Network Model Based on Principal Components Analysis

        오우라비압둘하메드바바툰데,이종원,메쓰캄카남즈사니카닐란가니자야세카라,이현우,Owolabi, Abdulhameed B.,Lee, Jong W,Jayasekara, Shanika N.,Lee, Hyun W. The Korean Society of Agricultural Engineers 2017 한국농공학회논문집 Vol.59 No.5

        A model was developed using Artificial Neural Networks (ANNs) based on Principal Component Analysis (PCA), to accurately predict the air humidity inside an experimental greenhouse located in Daegu (latitude $35.53^{\circ}N$, longitude $128.36^{\circ}E$, and altitude 48 m), South Korea. The weather parameters, air temperature, relative humidity, solar radiation, and carbon dioxide inside and outside the greenhouse were monitored and measured by mounted sensors. Through the PCA of the data samples, three main components were used as the input data, and the measured inside humidity was used as the output data for the ALYUDA forecaster software of the ANN model. The Nash-Sutcliff Model Efficiency Coefficient (NSE) was used to analyze the difference between the experimental and the simulated results, in order to determine the predictive power of the ANN software. The results obtained revealed the variables that affect the inside air humidity through a sensitivity analysis graph. The measured humidity agreed well with the predicted humidity, which signifies that the model has a very high accuracy and can be used for predictions based on the computed $R^2$ and NSE values for the training and validation samples.

      • KCI등재

        Dynamic Failure Investigation in Ultrafi ne Grained AA2219: Mechanical and Microstructural Analysis

        Amin Azimi,Gbadebo Moses Owolabi,Nikhil Kumar,Grant Warner 대한금속·재료학회 2019 METALS AND MATERIALS International Vol.25 No.4

        In this study, the high strain rate behavior of ultrafi ne grained (UFG) AA2219 alloy processed via multi axial forging atcryogenic temperature was investigated. Room temperature forged sample was used as a reference to determine the eff ectsof signifi cant grain size refi nement on the dynamic response of the materials. The initial microstructure characterizationindicated that severe plastic deformation in the cryogenically process alloy resulted in its grain size reduction to ~ 270 nmand the second phase breakage to fi ner particles. The results of the dynamic impact tests show that the strain hardening andthermal softening are substantially less signifi cant in the UFG materials, whereas the maximum fl ow stress and the strain ratesensitivity increased. Furthermore, the grain size reduction led to the absorption of higher portion of the deformation energyand an increase in the toughness of the fabricated UFG material when compared to the conventionally forged samples. Thisimprovement is approximately 56% at a strain rate of 4000 s −1 obtained via the grain structure refi nement. Microstructureanalysis of the post-deformed samples revealed two fully transformed adiabatic shear bands (ASBs) in the coarser grainedmaterial due to intense localized strain and thermal instability during the impact tests which caused the pushing off of thesecond phases and cracks formation inside the ASBs. However, low-intensity deformed ASBs and a notable enhancementin crack initiation strength were observed by morphology and fi nal confi guration of the post-deformed UFG samples. Inaddition, no considerable hardness variations were experienced in the impacted UFG material due to the saturation of grainsize during the cryogenically forging process. In contrary to the UFG alloys, signifi cant hardness increase was observed inthe deformed coarse grained material which was associated with softening in the adjacent regions providing a zone proneto cracks initiation.

      • KCI등재후보

        Trajectory of brain-drain and quality of work-life amongst Nigeria’s university lecturers: academic staff union of universities (ASUU) incessant strike in retrospect

        Akinwale Olusegun Emmanuel,Kuye Owolabi Lateef,Akinwale Olayombo Elizabeth 경희대학교 글로벌 통상·금융연구원 2023 International Trade, Politics and Development Vol.7 No.2

        Brain-drain insurgency has become pervasive amongst professionals and the last option for everyone in the country to realise a sustainable quality of work-life (QWL). All youths now in the country have perceived migrating to the international workspace as a noble idea. This study investigates the incidence of brain-drain and QWL amongst academics in Nigerian universities.To sparkle a clearer understanding concerning factors preventing the QWL amongst Nigeria's lecturers, this study utilised a cross-sectional research design to survey the participants across all departments in federal institutions through an explanatory research approach. This study applied an array of adapted scales to evaluate members of academic staff track of what provoked the incidence of brain-drain amongst Nigerian lecturers and possible influence on their QWL. The study surveyed 431 members of academic staff in Nigerian universities to collect useful data and employed a structural equation model (SEM) to analyse the obtained data.The outcome of this study highlights that there is a horrible condition of service amongst Nigerian lecturers, a poor compensation system, poor academic research funding and lack of autonomy are bane to the QWL experienced in Nigerian tertiary institutions today. This study indicates that poor staff development and inadequate university funding are part of the justification that provoked brain-drain insurgence, and allowed the government to lose their skilled and competent egg-heads in the university to other foreign nations of the world.This study demonstrated that brain-drain has become part of Nigeria's national life given that all professionals are seeking better life where their skills, competence and energy would be valued. Brain-drain was not common until these days amongst academics and fewer studies were noted but this study showed a novel paradigm regarding the QWL and brain-drain trajectory.

      • KCI등재

        EFFECTS OF POLYPHENOLS OF Cocos Nucifera HUSK FIBRE ON SELECTED KIDNEY FUNCTION INDICES IN MICE

        Adebayo, Joseph Oluwatope,Owolabi, O.O.,Adewumi, O.S.,Balogun, E.A.,Malomo, S.O. Cellmed Orthocellular Medicine and Pharmaceutical 2019 셀메드 (CellMed) Vol.9 No.1

        Decoction of Cocos nucifera husk fibre is used indigenously in Nigeria for malaria treatment. Polyphenols have been identified as the phytochemicals responsible for the antimalarial activity of Cocos nucifera husk fibre, though their toxicity has not been evaluated. The polyphenols of Cocos nucifera husk fibre were therefore evaluated for their effects on selected kidney function indices in mice. Fifty mice were randomly divided into five groups (A-E) of ten mice each. Mice in group A were orally administered 5% DMSO solution while those in groups B, C, D and E were orally administered 31.25, 62.5, 125 and 250 mg/Kg body weight of the polyphenols respectively for seven days. Serum urea, creatinine and uric acid concentrations were determined. Serum levels of sodium, potassium, chloride and calcium ions and kidney alkaline phosphatase (ALP), glutamate dehydrogenase (GDH) and gamma-glutamyltransferase (GGT) activities were also determined. The results showed that the polyphenols significantly reduced (p<0.05) urea concentration at 250 mg/Kg body weight and creatinine concentration at all doses compared to controls. The polyphenols caused no significant alteration (p>0.05) in serum uric acid concentration and kidney ALP, GGT and GDH activities compared to controls. There was significant increase (p<0.05) in serum sodium ion concentration at 31.25, 125 and 250 mg/Kg body weight of polyphenols whereas significant increase (p<0.05) in serum potassium and chloride ions was observed at 62.5 and 250 mg/Kg body weight compared to controls. Thus, polyphenols of Cocos nucifera husk fibre may adversely affect some osmoregulatory functions of the kidney, especially at higher concentrations.

      • KCI등재후보

        Falls and Their Associated Risks in Parkinson’s Disease Patients in Nigeria

        Temitope Hannah Farombi,Mayowa O Owolabi,Adesola Ogunniyi 대한파킨슨병및이상운동질환학회 2016 Journal Of Movement Disorders Vol.9 No.3

        Objective Falls are a devastating consequence of Parkinson’s disease (PD) and are due to motor imbalance. However, the frequency of falls and their risk factors among Nigerians with PD is not known despite the significant increase in PD cases in the country. To assess fall risk factors and frequency in Nigerian PD patients. Methods Using an analytical design to compare falling versus non-falling patients, 81 PD patients were assessed for clinical factors, frequency of falls, and candidate risk factors for falls according to the Tinetti Balance and Gait, Unified Parkinson’s Disease Rating Scale subsection 1, and Timed Up and Go Tests. Descriptive, bivariate, and multivariate analyses were performed at the 95% confidence level. Results The mean age of participants was 65.6 ± 9.7 years. Falls were about three times (p < 0.001) more common in PD patients. Of the falling patients, 67.7% sustained injuries, 67.7% had recurrent falls and 44.9% admitted to having a fear of falling. The independent statistical predictors of fall were fear of falling [odds ratio (OR): 3.86], disease severity (OR: 1.09) and disease duration (OR: 1.01). Conclusion The frequency of falls in PD patients was significantly higher when compared with the healthy adult population, and the modifiable predictor was fear of falling with a potential to significantly reduce falls when strategically addressed

      • Traditional oil palm (Elaeis guineensis jacq.) and its medicinal uses: A review

        Bamidele Victor Owoyele,Gbenga Opeyemi Owolabi 셀메드 세포교정의약학회 2014 셀메드 (CellMed) Vol.4 No.3

        The oil palm ( Elaeis guineensis Jacq.) has been reported to originate along the gulf of the guinea in West Africa. The various parts of the tree have been used locally and traditionally for various medicinal purposes. Some of these uses have been proved by scientific experiments. Palm oil is extracted from the mesocarp of the fruit and is used traditionally for the treatment of headaches, pains, rheumatism, cardiovascular diseases, arterial thrombosis and an atherosclerosis due to its rich phytonutrients. The leaves are also used for the treatment of cancer, cardiovascular diseases, kidney diseases and wound healing. The sap also has been found to be rich in phytonutrients that can be used to treat various diseases. This review therefore seeks to explore many of the uses of the oil palm using the various parts of the oil palm.

      • 공공 데이터를 이용한 UAV 자동경로비행

        박경석 ( Kyungseok Park ),김민준 ( Minjun Kim ),( Owolabi Ganiyat Oyindamola ),( Liu Huiyu ),김승호 ( Sungho Kim ) 한국정보처리학회 2019 한국정보처리학회 학술대회논문집 Vol.26 No.1

        움직이는 UAV는 많은 위치에너지와 운동에너지를 가지므로 지상으로 추락하는 경우 많은 충격량을 가질 수 있다. 이는 인명피해로 연결될 수 있기 때문에 본 논문에서는 UAV 비행경로 상의 인구밀집 지역을 위험구역으로 정의하였다. 기존의 UAV 경로비행은 사용자에 의해 미리 설정된 경로만을 운행하는 수동적인 형태였다. 일부 UAV는 경로비행 중 장애물을 회피하는 시스템 등 안전기능을 포함하고 있지만, 비행환경변화에 대응하기에는 부족하다. UAV 경로비행에 공공 데이터를 활용할 경우, 위험구역을 검출하고 회피비행을 수행할 수 있어서 비행환경변화에 대한 대응이 향상될 수 있다. 따라서 본 논문에서는 수집된 데이터를 활용하여 위험구역을 회피하는 최적경로 비행 방안을 제안한다. 실험 결과, 제안하는 자동경로비행에서 목적지와 목적지에 따른 경로를 지정할 경우, 위험지역을 스스로 판단하여 최적 우회경로로 비행하는 것을 확인하였다. 추후 회피방안에 따라 비행하여 획득하는 영상의 질적 만족도를 높일 수 있는 방안을 연구할 예정이다.

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