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Wiener-Hopf 적분방정식으로부터 파수영역에서의 쌍적분 방정식 유도에 관한 검토
하헌태,라정웅 대한전자공학회 1998 電子工學會論文誌, D Vol.d35 No.6
Wiener-Hopf 적분방정식으로부터 경계면 위의 전체파를 미지수로 하는 파수영역에서의 쌍적분 방정식을 얻는 기존의 유도과정을 검토하였다. 이러한 기존의 유도 과정은 결국 Wiener-Hopf 적분방정식으로부터 Helmholtz-Kirchhoff 적분방정식을 유도하는 과정임을 해석적으로 보였다. The derivation of the dual integral equation in the spectral domain, which has total fields of the interfaces as unknowns, is investigated. It is analytically shown that the derivation of the dual integral equation is equivalent to deriving the Helmholtz-Kirchhoff integral equation from the Wiener-Hopf integral equation.
쌍적분 방정식을 이용한 완전도체쐐기의 점근해 유도, II : H-분극된 평면파 입사시
하헌태,나정웅,Ha, Huen-Tae,Ra, Jung-Woong 대한전자공학회 1999 電子工學會論文誌, D Vol.d36 No.1
An exact asymptotic solution for a perfect conducting wedge with H-polarized plane wave incidence is analytically derived by substituting the exact boundary fields of the perfeet conducting wedge, the well known series solution, into the dual integral exquation in the spectral domain. The validity of the derivation is assured by showing that the analytic integration gives the null fields in the complementary region. The merits taking the dual integral equation for derivation of an asymptotic solution for a perfect conduction wedge is discussed. H-분극된 평면파가 입사되는 완전도체쇄기에 대해 급수형태의 정확한 경계면 전자파를 파수영억역에서의 쌍적분 방정식에 대힙하여 해석적으로 적분함으로써 검근해를 유도하였다. 가상공간에서 적분 결과가 0이 되는 것을 보임으로써 적분 과정의 타당성을 보였다. 완전도체쇄기의 점근해 유도과정에 쌍적분 방정식을 이동함으로써 얻은 잇점에 대해 살펴보았다.
河憲泰 건국대학교 교육대학원 1991 敎育論叢 Vol.16 No.-
This study aims at finding out the importance of class assignment in personnel administration, looking into the relations betweens class assignment and morale of teacher, and between class assignment and class administration, Searching for the more desirable class assignment realized in the future through the discovery of problems in the present class assignment. To sum up the results of investigation in this study : Firstly, teachers showed the high degree of satisfaction with their own teaching profession. Secondly, as regards class assignment the request sheets for class were received from each school, but the rate of reflection are low. The class assignment was conducted by primary school principal. Thirdly, the classes for which teachers had a preference were the first seconded grade, and the classes for which had a disliking were the fifth-sixth grade class. The reason that teacher had a perference for such grades is a few hours of teaching burden. Toward teaching profession becomes higher, the system which degrades the morale of teachers due to unfair class assignment should be corrected. Secondly, the reason for the classes that teachers have a preference for is a few hours of teachings. Class burden(hours of teaching) becomes the big reason for the degraded morale of teachers. Thirdly, class assignment exercises an influence upon all the aspects of school management. Unreasonabled class assignment is enabled to degrade the educational quality of primary school ultimately. Accordingly, a right class assignment system should be executed. Fourthly, the request sheets of primary school teachers for class assignment, in the existing class assignment system, should primarily be taken into consideration, and the amount of their task should be alleviated after highter-graded class is assigned to teachers. Fifthly, the class assignment that should be carried out in the future should introduce the legal institualization. And it is required that the meeting on school affairs should become a deliberative organ, and as regards the hours of teaching the overtime allowance should be pay though the set-up of the legal hours of teaching. It is most desirable that the ideal class assignment should be conducted through the organization of the personnel committe by class-to-class. The school hours(hous of teaching) that teachers desire in a week is twenty four-five-hours. Fourthly, class assignment exert great influence upon the morale of teachers. Unfair class assignment exercises an influence upon the relationship between themselves and their superior fellow teachers. Fifthly, the degradation of the morale of teachers after class assignment exercises an effect on all aspects of class administration. Sixthly, the reason for unreasonable class assignment is no legal criterion and the matter on primary school principal administration of teachers gifts. The request sheet for class should primarily be taken into account in the present class assignment system, and the task burden of primary school children should be alleviated at time of high-graded class assignment. The legal hour system should be established in relation to class burden(hour system of teaching) and an overtime allowance system be introduced. It is required that the meeting on school affairs should become a deliberative organ, and it is desirable that class should be assigned to teachers through the organization of class-to-class personnel committee. To come to a conclusion based on the above result of study : Firstly, class assignment exercises a significant influence upon morale of teachers. At this time when the degree of satisfaction.
쌍적분 방정식을 이용한 완전도체쐐기의 점근해 유도, I : E-분극된 평면파 입사시
하헌태,나정웅 대한전자공학회 1998 電子工學會論文誌, D Vol.d35 No.12
E-분극된 평면파가 입사되는, 임의의 쐐기각을 갖는 완전도체쐐기에 대해 파수영역에서의 쌍적분 방정식을 유도하였다. 급수전개된 완전도체쐐기의 정확한 경계면 전자파를 파수영역에서의 쌍적분 방정식에 대입하여 해석적으로 적분함으로써 점근해를 유도하였다. 가상공간에서 적분 결과가 0이 되는 것을 보임으로써 적분과정의 타당성을 보였다. Dual integral equation in the spectral domain is derived for an arbitrary angled perfect conducting wedge with E-polarized plane wave incidence. Analytic integration of the dual integral equation in the spectral domain with the exact boundary fields of the perfect conducting wedge, the well known series solution, gives the exact asymptotic solution. The validity of the integration is assured by showing that analytic integration gives the null fields in the complementary region.
스포츠활동의 실태에 관한 조사연구 : 대도시와 중소도시 성인을 중심으로
박정래,하헌태 公州大學校스포츠科學硏究所 1995 스포츠科學硏究所論文集 Vol.- No.9
1. Conclusions The survey was based on the realities of sports activities of citizens in big, middle and small cities. The conclusion was as follows; (1) In the sports activities of citizens, the 51.8% of males in fifties and the 55.9% of females in forties responded that seldom did, the sports activities which obviously revealed that the participation of sports activities of people at both ages was lower than that of the other ranges of ages. (2) The purpose of participating in sports activities lay in the fact that they wanted to promote their health, do body-building and make friends. While the youth were only interested in enjoying sports themselves, only a few of them joined them. It is noted that the senior citizens was to get a victory, and this fact revealed that senior citizens had a strong desire for winning the game in comparison with other ages. (3) Among the sports activities actually played in one recent year, the youth were participating in sports events which had been regarded as leisure sports such as ski, tennis, aerobic, and so on, while the middle aged had a great tendency of rield sports such as golf, fishing, taking a walk, climbing mountains and wanted to spend their time in enjoying the sports which could be closely harmony with nature. (4) Among facilities of sports activities, public establishement, public park, stream park, shool were selected and in the use of cibil commercial facilities, males in the wide scope of ages were expected to take a part in them, while in them, while in females, they were limited in marrow scope of ages. (5) With regard to sports images in cities the cities themselves had a variety of simply available facilities with greenplants filled in the mountain areas, we can safely say that in the way of practicing sports activities, most of people can easily join in and enjoy them without any burden. 2. Suggestions By the conclusion, I will try to suggest as follows; (1) For the encouragwments of sports activities. There will be more supports given by the national and local governments. (2) And do not hesitate to support the developments and spread of equipments and leaders. (3) Finally, There will must be a lot of continuous studies for the activation of activities.