Laboratory Astrophysics using Intense X-ray from Free Electron Lasers

Moses Chung 한국천문학회 2017 天文學會報 Vol.42 No.2

Comparative Study of E-Learning Experiences: A Case Study of Nigeria, South Africa and United States

Moses Timothy,Oladunjoye John A,Agu Edward O 보안공학연구지원센터 2016 International Journal of Grid and Distributed Comp Vol.9 No.10

We are in a society where availability of open courseware and countless internet-based online programmes are run by universities across the globe. The world is moving from the traditional face-to-face classroom teaching to a virtual classroom. There are concerns however; that this paradigm shift is limited by the understanding on what quality/standard is needed for a good e-learning resource. This concern has prompted the need to compare e-learning experiences in United States, South Africa and Nigeria so as to encourage developing countries to improve on this innovative approach to learning.

Metaphoric Conceptualizations of Death in Gikuyu

( Moses Gatambuki Gathigia ) 서울대학교 인지과학연구소 2017 Journal of Cognitive Science Vol.18 No.2

Using the dictum that metaphor is a conceptual mapping from a concrete source domain to an abstract target domain, this paper identifies and categorizes the metaphors of death in Gikuyu using the Conceptual Metaphor Theory. To achieve this objective, a purposive sample of twenty speakers of Gikuyu was interviewed. The study collected 47 metaphors of death as the target domain. Having employed the mnemonics “TARGET DOMAIN IS SOURCE DOMAIN” as posited by Lakoff and Johnson (1980), the study identified four conceptual metaphors of death in Gikuyu as follows: DEATH IS A JOURNEY; DEATH IS THE END; DEATH IS A REST; and DEATH IS A SUMMON. The study concludes that the Cognitive linguistics model provides tools for understanding, interpreting and accounting for metaphors of death in Gikuyu.

Discretization Approach for the Very Light Aircraft Configurations Validation Using Computational Fluid Dynamics

Moses Sitio,Dongguk Ryu,Sangho Kim,Jae-Woo Lee 한국항공우주학회 2013 한국항공우주학회 학술발표회 논문집 Vol.2013 No.4

In this paper the development of unstructured grid discretization approach is presented. The objective of this study is to better establish the effects of mesh generation techniques and grid convergence on velocity fields and particle deposition patterns to determine the optimal aerodynamic characteristics. In order to achieve this objective, cell-centred and vertex-centred approaches are employed and compared with experimental data. The cell-centred approach result indicates that the aerodynamic characteristic was captured faster in the stall condition, although with a different trend after the stall condition compared with the experimental data. The vertex-centred approach result indicates that the aerodynamic characteristic trend captured is comparable to the experimental data. From the model an advance study can also be achieved for this vertex-centred discretization approach with discrete vertex variables in several important areas.

Laboratory Astrophysics using High Energy/Power Lasers

Moses Chung 한국천문학회 2017 天文學會報 Vol.42 No.2

Comparison of Reading Speed after Bilateral Bifocal and Trifocal Intraocular Lens Implantation

Moses Kim,Jae-hyung Kim,Tae-Hyung Lim,Beom Jin Cho 대한안과학회 2018 Korean Journal of Ophthalmology Vol.32 No.2

Purpose: : To evaluate and compare visual acuity and reading speed for Korean language between a diffractive bifocal and trifocal intraocular lens (IOL) of the same material and haptic design. Methods: We reviewed the medical records of the patients who had undergone bilateral cataract surgery with bifocal IOLs (AT LISA 801) on the both eyes (bifocal group) and trifocal IOLs (AT LISA tri 839 MP, trifocal group). The main outcome measures were the uncorrected distance, intermediate, and near visual acuity (uncorrected distance visual acuity [UCDVA], uncorrected intermediate visual acuity [UCIVA], and uncorrected near visual acuity [UCNVA]) and corrected distance, near, and distance-corrected intermediate visual acuity (corrected distance visual acuity [CDVA], corrected near visual acuity [CNVA], and distance-corrected intermediate visual acuity [DCIVA]) at last postoperative follow-up month. Reading speeds for Korean language were measured to check near visual function. Results: Fourteen eyes (7 patients) were included in the bifocal group and 32 eyes of 16 patients in the trifocal group. There were no statistical differences between the two groups with respect to UCDVA, UCNVA, CDVA, and CNVA. However, UCIVA (0.35 vs. 0.22 logarithm of the minimum angle of resolution [logMAR], p < 0.01) and DCIVA (0.34 vs. 0.20 logMAR, p < 0.01) were significantly better in the trifocal group than in the bifocal group. The mean reading speed for logMAR 0.5 optotype (point 10) was 86.50 words per minute (wpm) in the bifocal group and 81.48 wpm in the trifocal group without a significant difference (p = 0.70). Conclusions: Trifocal IOLs provided the same level of distance and near visual acuity and reading speed as that of bifocal IOLs with better intermediate visual acuity

Modified stepwise inertial control using the mechanical input and electrical output curves of a doubly fed induction generator

Moses Kang,Jinsik Lee,Yong Cheol Kang 전력전자학회 2015 ICPE(ISPE)논문집 Vol.2015 No.6

A stepwise inertial control (SIC) scheme of a wind turbine generator (WTG) rapidly increases its constant output to support the frequency control if a large disturbance such as a generator trip occurs in a power grid. This helps to significantly arrest the frequency nadir, but causes significant reduction in the kinetic energy (KE) of a WTG. Thus, the output of a WTG should be rapidly reduced to restore the rotor speed. This might cause a second frequency dip. This paper presents a modified SIC scheme of a doubly fed induction generator (DFIG) to prevent a second frequency dip. The modified SIC scheme generates a reference signal that consists of the constant reference and the reference for maximum power point tracking operation. The former is analytically determined by considering the mechanical input power and electrical output power curves of a DFIG. The output of the proposed SIC scheme decreases with the KE of the DFIG and thus no second frequency dip occurs. The performance of the proposed SIC is investigated for a 100MW aggregated DFIG wind power plant using an EMTP-RV simulator. The results clearly show that the proposed SIC scheme significantly increases the frequency nadir without causing a second frequency dip.

Cognitive Behaviour Therapy And Relaxation Technique on Examination Anxiety among Senior Secondary School Students in the Ibadan Metropolis, Nigeria

Moses Oluwafemi Ogundokun,Victoria Aipu Olowo 강원대학교 인문과학연구소 2021 Journal of Humanities Therapy Vol.12 No.2

Examination anxiety is as old as examination itself, as long as examination exist, anxiety is bound to occur. Many students often feel anxious and exhibits lots of negative emotions towards examinations. These feelings of anxiety exhibited by the students generally has deleterious effects on the students and also on their academics and personality. This study therefore examined the use of Cognitive Behaviour Therapy and Relaxation technique on examination anxiety among Senior Secondary School students in the Ibadan metropolis. The moderating effects of emotional intelligence and academic self-efficacy were also examined. A pretest-posttest control group quasi- experimental design with a 3x2x2 factorial matrix was adopted. Multi-stage sampling procedure was employed. Three local government areas were randomly selected from Ibadan metropolis. One public secondary school were randomly selected from each of the local government area. Ninety (M=37; F= 53) Senior Secondary School students SS 1 and 2 were screened for the test anxiety and were randomly assigned to the Cognitive Behaviour Therapy (30) Relaxation Technique(30) and control group(30). Treatment lasted for eight weeks for the CBT and Relaxation Technique groups. Data were analysed using Analysis of Covariance and Multiple Classification Analysis at the 0.05 level of significance. The results indicated that there was significant main effect of treatments on examination anxiety of secondary school students. There was also significant main effect of emotional intelligence and academic self-efficacy on examination anxiety of secondary school students. Both CBT and relaxation technique were effective in managing examination anxiety among secondary school students. Counsellors and educational Psychologists should utilise these therapies to manage examination anxiety among students.

Foreign Capital Inflows and Manufacturing Sector Output in Nigeria

Moses Oyeyemi Agbede 한국외국어대학교 아프리카연구소 2021 Asian Journal of African Studies Vol.- No.51

The study investigated the effects of foreign capital inflows on manufacturing sector output in Nigeria. Time series data were used for the study and they were sourced from the Central Bank of Nigeria Statistical Bulletins 2018 and World Bank Indicators which spanned between 1986 to 2017. In order to achieve the objective of the study, the study employed the Autoregressive Distributive Lag (ARDL) bounds testing approach to establish the long-run relationship between the relevant time series data. The unit root test employed suggested that, all the variables were found to be either I(0) or I(1) levels of stationary. The Lag length criterion was one, the bound test was conducted which revealed an existence of long run relationship among the variables. The study found that a unit rise in foreign direct investment and foreign portfolio investment increases manufacturing output by 29% and 15%, credit to manufacturing sector signed positive but insignificant to manufacturing output in Nigeria. Development assistance and external debt have an inverse relationship with manufacturing output in the long-run model. External debt has a significant negative effect on manufacturing output while development assistance signed positive but insignificant on the manufacturing sector output in the short run. Therefore, the study recommended among others a proactive step to expand market capitalization which is the major driver of foreign portfolio investment and formulate policies to attract foreign capital inflow to improve manufacturing output in Nigeria.

AN ALGORITHM FOR COMBINE HARVESTER REEL STAGGER DETERMINATION BASED ON REEL KINEMATICS AND CROP STEM DEFLECTION

Moses Frank ODUORI,Jun SAKAI,Eiji INOUE 한국농업기계학회 1993 ICAMPE 요약집 Vol.3 No.-