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Linearly Polarized Emission of Quantum Wells Subject to an In-Plane Magnetic Field
D. Wolverson,Yu. G. Kusrayev,A. V. Koudinov,N. S. Averkiev,J. J. Davies,J. Kossut,G. Karczewski,T. Wojtowicz 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.53 No.5
We present results on the linear polarization of the photoluminescence (PL) of dilute magnetic semiconductor quantum wells which is induced by an applied magnetic field. The PL is found to be partially linearly polarized, but without any correlation with the polarization of the exciting light, whilst the direction of the polarization does not depend on the direction of the magnetic field in the plane although its magnitude does. We present a model for this behavior in terms of a possible reduction of the in-plane symmetry of the quantum well; we conclude that any perturbations giving (i) a finite in-plane hole g-factor and (ii) a mixing of light and heavy holes are sufficient to generate the type of experimental behavior we observe.
Davy, James G.,Noh, Chang-Kyun Korean Institute of Navigation and Port Research 2011 한국항해항만학회지 Vol.35 No.9
This paper compares the English language programs of two maritime institutes in very different parts of the world, South Korea and Belgium. It will show that although both institutes comply with the minimum standard set by the STCW Code issued by the IMO, course contents and requirements can vary greatly. Method of class delivery, choice of learning tools and testing will be examined to illustrate some of these differences. This paper will show that in order to train new seafarers in the best possible way that will fulfill the IMO mandate of Safer Shipping and Cleaner Oceans, continual review and development of course curriculum should be an ongoing process that focusing on encouraging cadets to communicate in a targeted, efficient and professional way within a nautical context. This paper will show by comparison the huge potential that the Korean Maritime English program has for positive change and growth.
Davy, James G.,Noh, Chang-Kyun Korean Institute of Navigation and Port Research 2016 한국항해항만학회지 Vol.40 No.5
Accidents and incidents caused by poor performance in the maritime industry suggest the need to find ways to improve performance in order to operate effectively and improve safety. The data for this study was collected from maritime students and involves the performance and levels of intrinsic and extrinsic motivation. Various motivational factors were identified and the ways in which these factors relate to performance was analyzed. The importance of considering motivation when recruiting new trainees and workers, and continually looking for ways to increase intrinsic motivation, is stressed throughout this paper. The results suggest that high levels of good quality motivation correlate positively with better performance.
A Basic Study on Maritime English Education and the Need for Raising the Instructor Profile
Davy, James G.,Noh, Chang-Kyun Korean Institute of Navigation and Port Research 2010 한국항해항만학회지 Vol.34 No.7
English is the accepted common working language of the maritime world and being competent in its use is essential to the safety of ships, their crews and the marine environment. This paper is a response to the urgent need to find a suitable solution to the problem of providing maritime students with quality instruction in Maritime English. This paper will show what type of English instructor is best suited to help cadets have at least a basic grasp of Maritime English communication, with a view to possessing the level required by STCW 95 within the shortest time. It presents ways that maritime institutes can develop their own qualified or 'marinated' English Instructors and what qualifications should be required. It is concluded that by further essential research, interviews and questionnaires etc., the language needs of the university and shipping industry in Korea as a whole can be clearly verified. By examining such data, the present language education systems can be evaluated as to efficacy and relevance, allowing the establishment and implementation of 'best practice' within the training institute. This will result in making excellent informed decisions and choices about how best to improve the language competencies of graduating cadets, thereby creating the catalyst for the success of future seafarers whilst raising the image of the institute and Korean shipping worldwide.
Davy, James G.,Noh, Chang-Kyun Korean Institute of Navigation and Port Research 2012 한국항해항만학회지 Vol.36 No.4
Working onboard large ocean-going vessels is one of many industries that is by its very nature extremely error-provoking. In industries such as aviation, nuclear power, healthcare and transport, the need for mental preparedness and professionalism are amongst the qualities essential for the management of complex hazardous systems. Recruiting, training, and more importantly retaining the right people to work in these industries is of paramount importance if safety is to be continuously improved and economic benefits realized. Through consideration of extant empirical literature this paper will explore the need for enhancing collaboration between shipping companies and maritime training insitutes in order to provide the industry with those most capable for the job. It will be concluded that by providing a strong maritime foundation from the outset of training, maritime academies in South Korea can provide shipping companies with a wealth of highly qualified, motivated officers who will contribute to safety and remain valuable assets within the industry for years to come.
미국 의회연구소 보고서 : 미·북관계 개선과 관련된 법적, 절차적 문제
Davis, Zachary S.,Niksch, Larry A.,Nowels, Larry Q.,Pregelj, Vladimir N.,Shinn, Rinn-Sup,Sutter, Robert G. 한국전략문제연구소 1995 전략연구 Vol.2 No.1
클린턴 행정부는 1994년10월21일 북한 핵개발로 인한 위기를 해소하고 정치 및 경제관계 정상화 방안들을 포함한 미·북 협정에 서명하였다. 對북 경수로 제공 및 중유선적 등을 위한 세부 절차 그리고 후속조치인 관계 정상화등에 관한 절찬 등 여러협정 세부조항들이 아직 공개되지 않았다. 의회와 행정부가 동 협정을 이행하고 관계정상화를 위한 조치들을 고려함에 따라서 현재의 미북한간 관계를 주도하고 있는 일련의 복잡한 법률 및 규정상의 제한에 봉착하게 될 것이다. 이러한 제한 요소들은 경수로 제공 및 유류공급이 중요한 국면에 영향을 미치고 경제, 외교, 문화 및 기타 등을 포함한 모든 공식적인 관계를 망라 하고 있다. 이것들은 또한 냉전시대에 공산주의를 반대하는 미국의 조치들에 깊은 역사적 뿌리를 두고 있다. 중국 및 베트남 같은 기타의 공산주의국가들과 관계정상화를 도모할 때 있었던 법률 및 규정상의 제한요소와 경험을 검토해 보면 공산주의 국가와의 관계정상화 과정은 종종 지연되었음을 알 수 있다. 현재의 미·북관계의 여러 제한요소들은 북한에 관한 특별한 법령 또는 북한을 포함한 특정국가들에 영향을 미치는 법령들에 의해 규정지워 진다. 일부 법령들은 대통령의 재량권인 한편, 기타 제한 요소들은 일반 법령 또는 특정상황 또는 정책에 관한 행정결정에 의해 북한에 적용된 가타의 권한등에 의해서 유지되어 왔다. 후속되는 관계정상화 과정은 경제관계를 유예시키고 외교관계를 먼저 수립하거나 정치분야보다 경제관계를 선행 또는 모든분야를 동시에 발전시키는 등과 같이 다양한 방안들이 있다. 일반적으로 대통령이 주로 이들을 추진하지만 의회도 여러 분야에서 중요한 역할을 하기 때문에 의회의 지원없이는 관계 정상화가 불가능하다.
James G. Davy,Chang-Kyun Noh 한국항해항만학회 2011 한국항해항만학회지 Vol.35 No.9
This paper compares the English language programs of two maritime institutes in very different parts of the world, South Korea and Belgium. It will show that although both institutes comply with the minimum standard set by the STCW Code issued by the IMO, course contents and requirements can vary greatly. Method of class delivery, choice of learning tools and testing will be examined to illustrate some of these differences. This paper will show that in order to train new seafarers in the best possible way that will fulfill the IMO mandate of Safer Shipping and Cleaner Oceans, continual review and development of course curriculum should be an ongoing process that focusing on encouraging cadets to communicate in a targeted, efficient and professional way within a nautical context. This paper will show by comparison the huge potential that the Korean Maritime English program has for positive change and growth.