• Journal of Communications and Networks
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• 제8권1호
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• pp.59-69
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• 2006

Bluetooth is reputed as a wireless networking technology supplying ad-hoc networks between digital devices. In particular, Bluetooth scatternet is an essential part of dynamic ad-hoc networks. Yet, there have not been sufficient researches performed on scatternet environment. This paper proposes a scatternet reformation algorithm for ad-hoc networks for instances where some nodes enter or leave the scatternet. The proposed algorithm is a general algorithm that can be applied to many types of Bluetooth scatternet regardless of the topology. The proposed algorithm is made for two reformation cases, i.e., nodes leaving and nodes entering. For the reformation when nodes leave a scatternet, the recovery node vector (RNV) algorithm is proposed. It has short reformation setup delay because the process involves a single page process (not including inquiry process). For the reformation when nodes enter a scatternet, the entry node algorithm is proposed. This is a simple and easily implementable algorithm. In this paper, real hardware experiments are carried out to evaluate the algorithm's performance where the reformation setup delay, the reformation setup probability and the data transfer rate are measured. The proposed algorithm has shown improvement in the reformation setup delay and probability.

• 한국정보과학회논문지:정보통신
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• 제32권1호
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• pp.110-122
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• 2005

블루투스(Bluetooth)는 휴대폰을 중심으로 하여 다양한 디지털 기기 사이의 무선 인터페이스를 제공할 수 있는 기술로 가능성을 인정받아 왔다. 특히 블루투스에서 지원되는 스캐터넷(Scattemet)이라는 네트워크의 형태는 PAN(Personal Area Network)과 같은 동적인 Ad-hoc 네트워크 환경에서 블루투스가 지원되기 위해서는 필수적인 요소이다. 하지만 기존의 블루투스 스캐터넷 관련 연구들은 노드들이 수시로 추가 혹은 이탈하는 동적인 네트워크 환경을 거의 고려하지 않고 있다. 본 논문에서는 동적인 네트워크 상황을 고려하여 블루투스 스캐터넷 내부에서 노드가 이탈하였을 경우 이를 재형성하기 위한 알고리즘을 제시하였다. 본 알고리즘은 다양한 스캐터넷 형태와 무관하게 적용될 수 있는 범용 알고리즘이며, Inquiry 과정이 생략된 채 Page 과정만으로 빠르게 네트워크가 복구되는 특성을 지닌다. 또 노드의 형태에 따라 복구 마스터/슬레이브를 지정하여 작성되는 복구 노드 벡터(Recovery Node Vector)에 따라 동작한다. 또 본 논문에 제시한 알고리즘은 상용 하드웨어에 적용이 가능한 구체적인 알고리즘으로, 실제 상용 하드웨어 실험을 통해 그 성능을 평가하고 발생되는 문제점을 수정하였다. 실험을 통해 제안한 알고리즘의 재형성 지연 시간은 Inquiry 과정이 포함된 경우의 23~60% 정도로 단축된 결과를 얻었고, 97% 이상의 복구 성공률을 보였다.

• Imaging Science in Dentistry
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• 제37권2호
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• pp.69-77
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• 2007

Purpose: To evaluate the accuracy of the imaging reformation of cone beam computed tomography for the assessment of bone defect healing in rat model. Materials and Methods: Sprague-Dawley strain rats weighing about 350 gms were selected. Then critical size bone defects were done at parietal bone with implantation of collagen sponge. The rats were divided into seven groups of 3 days, 1 week, 2 weeks, 3 weeks, 4 weeks, 6 weeks, and 8 weeks. The healing of surgical defect was assessed by multi planar reconstruction (MPR) images and three-dimensional (3-D) images of cone beam computed tomography, compared with soft X-ray radiograph and histopathologic examination. Results: MPR images and 3-D images showed similar reformation of the healing amount at 3 days, 1 week, 2 weeks, and 8 weeks, however, lower reformation at 3 weeks, 4 weeks, and 6 weeks. According to imaging-based methodologies, MPR image revealed similar reformation of the healing amount than 3-D images compare with soft X-ray image. Among the four threshold values for 3-D images, 400-500 HU revealed similar reformation of the healing amount. Histopathologic examination confirmed the newly formed trabeculation correspond with imaging-based methologies. Conclusion: MPR images revealed higher accuracy of the imaging reformation of cone beam computed tomography and cone beam computed tomography is a clinically useful diagnostic tool for the assessment of bone defect healing.

• 의학교육논단
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• 제9권2호
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• pp.1-12
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• 2007

Purpose: The aim of this study is to identify the elements of success in curriculum reformation using focus group interview and faculty survey. Methods: We analyzed the 105 questionnaires that were collected horn 450 faculties in Yonsei University College of Medicine from September 1 to September 12, 2005. The interview of focus group was conducted to 105 faculty and students using 10 interview questions from July 25 to August 29, 2005. The data of focus group interview and faculty survey were analyzed by content analysis. frequency and percentile. Results : 66.7% of faculty have pointed out that it is right a direction of new curriculum but there are some problems in curriculum management. The most frequently addressed problem in the new curriculum is as follows : ability of self-directed learning(15.3%). deficiency of faculty understanding(10.5%). The faculty comments on the improvement areas of new curriculum such as curriculum revision (8.6%). efficiency of curriculum management (6.7%), reward and incentive system of education(6.7%). The focus groups pointed out the important factors of curriculum reformation such as horizontal and vertical integrity between subjects, improvement of student achievement test, enhancement of self-directed learning. responsibility and authorities of course director. Conclusions : It should be concluded. to succeed curriculum reformation, which the purpose of curriculum reformation announces obviously and management group should effort continuously so that professors may understand the new curriculum. The course directors have to responsibility and authorities operating the subjects and the university should develop the students' evaluation system and faculty performance appraisal system.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2009년도 추계학술대회 논문집
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• pp.85-86
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• 2009

• 철학연구
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• 제126권
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• pp.321-343
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• 2013

종교개혁은 근대철학과는 무관한 듯 보이지만 실상은 근대철학과 밀접한 연관을 갖고 있다. 철학적으로 볼 때, 종교개혁은 두 가지 면에서 근대철학의 형성에 지대한 영향을 미쳤다. 종교개혁의 기본원리인 신적 이성에 대한 신적 의지의 우위를 강조하는 주의주의는 교회의 전승을 무시한 채 '오직 믿음으로'를 강조함으로써 성서와 교리에 대한 자의적 해석을 허용하게 되었다. 이로 인해 극심한 종교적 분쟁이 야기되었고 근대지성인들은 이를 종식시킬 수 있는 방안으로 이른바 보편종교라 할 수 있는 이신론과 자연종교를 추구하게 되었다. 또한 주의주의는 자연에 대한 탐구에 있어 종래의 사변적 탐구를 탈피해 관찰과 실험에 근거한 실험적 탐구에 나서게 함으로써 인간 본성에 대한 실험적 탐구인 실험철학(경험론)의 단초를 제공하였다. 요컨대 종교개혁은 한편에서는 보편종교의 추구를 그리고 다른 한편에서는 실험철학의 출현을 가져왔다고 할 수 있다. 보편종교란 행동과 실천의 근거가 되는 신비적 종교가 아니라 단순히 과학적 탐구를 위한 근거가 되는 세계관에 불과한 것이기에 보편종교를 추구한 철학은 '과학을 위한 철학'이었다. 또한 실험철학은 실험과 관찰을 통해 인간본능을 탐구한 이른바 인간학이란 점에서 '과학에 의한 철학'이었다. 결국 종교개혁은 과거 철학의 안방을 차지하고 있던 종교를 쫓아내고 그 자리에 과학을 앉힌 것이다.

• 한국주거학회논문집
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• 제25권6호
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• pp.67-74
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• 2014

Dongseong-ro public design was reformed for a short time to be short of connection and riffle effect of another project and to have limitation on long term and integrated development, so that systematic plan from beginning of the project was needed to produce synergy effects. The purpose of the study was to investigate reformation of Dongseong-ro public design and to check on existing development project again and to take actions against future projects in advance and to reexamine and make long term plan from point of view of development of downtown. This study investigated reformation of Dongseong-ro public design of Junggucheong office of Daegu that was done from May 2007 to December 2010. The study consisted of purpose of the project, scope, time, the committee of promotion, questionnaire survey, residents' participation and follow up to suggest reformation based on questionnaire survey. This study had limitation of investigation into internal materials of 'Dongseong-ro public design reformation's master planning service' of Junggucheong office of Daegu. Further studies were needed to investigate empirically.

• 한국콘텐츠학회논문지
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• 제17권5호
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• pp.642-657
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• 2017

지금으로부터 500년 전에 발생했던 루터의 종교개혁은 교회 안의 부패와 모순, 성경신학적 문제들을 세상에 드러내면서 성경과 초대교회의 가르침으로 돌아가자고 주장했던 "교회 안"만의 개혁이 아니었다. 그로 인해 시작된 종교개혁은 사회 전반적인 모든 분야에 영향을 미쳤고 중세에서 근세로 넘어가는 결정적인 디딤돌이 되었다. 본 연구의 목적은 16세기에 발생했던 루터의 종교개혁 과정에서 분명하게 드러났던 사회복지개혁적 특징이 무엇이었는지를 살펴보고 그것을 현대 기독교적 입장, 특별히 선교적 교회의 관점에서 어떻게 적용할 수 있는지를 제안하는 것이었다. 따라서 본론에서는 이신칭의와 만인사제설 교리가 루터종교개혁의 사상적 토대였음을 확인하였고 신양약자와 여성들과 같이 사회적 약자들에 대한 특별한 관심을 가지면서 현실을 무시하지 않았던 종교개혁이 루터의 종교개혁적 특징임을 살펴보았다. 루터의 사회복지 정책으로는 크게 세 분야로 나누어 볼 수 있는데 가난한 자들을 위한 구호활동, 교육사업, 그리고 경제정책이었다. 그리고 마지막으로 오늘날 현대 기독교가 루터의 사회복지개혁적 특징들을 계승하여 발전시킬 사항으로 현실을 무시하지 않는 사회적 복지실천, 교회의 올바른 실천적인 사회책임 이해, 지역공동체를 위한 실제적 복지실천을 제안하였다.

• 안보군사학연구
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• 통권9호
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• pp.313-340
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• 2011

The National Defense Reformation bill of "National Defense Reformation 2020" which have been constantly disputed and reformed by the government went through various levels of complementary measures after the North Korean sinking on the Republic of Korea (ROK) Naval Vessel "Cheonan". The final outcome of this reform is also known as the 307 Plan and this was announced on the 8th March. The reformed National Defense Reformation is to reduce the number of units and military personnel under the military structure reformation. However, in order for us to undertake successful National Defense Reformation, the use of privatized civilian resources are essential. Therefore according to this theory, the ROK Ministry of National Defense (MND) have selected the usage of privatized resources as one of the main core agenda for the National Defense Reformation management procedures, and under this agenda the MND plans to further expand the usage of private Especially the MND plans to minimize the personnel resources applied in non-combat areas and in turn use these supplemented personnel with optimization. In order to do this, the MND have initiated necessary appropriate analysis over the whole national defense section by understanding various projects and acquisition requests required by each militaries and civilian research institutions. However for efficient management of privatized civilian resources, first of all, those possible efficient private resources which can achieve optimization will need to be identified, and secondly continuous systematic reinforcements will need to be made in private resource usage legislations. Furthermore, we would need to consider the possibility of labor disputes because of privatization expansion. Therefore, full legal and systematic complementary measures are required in all possible issue arising areas which can affect the combat readiness posture. There is another problem of huge increase in operational expenses as reduction of standby forces are only reducing the number of soldiers and filling these numbers with more cost expensive commissioned officers. However, to overcome this problem, we would need to reduce the number of positions available for active officers and fill these positions with military reserve personnel who previously had working experiences with the related positions (thereby guaranteeing active officers re-employment after completing active service). This would in tum maintain the standards of combat readiness posture and reduce necessary financial budgets which may newly arise. The area of maintenance, supply, transportation, training & education duties which are highly efficient when using privatized resources, will need to be transformed from military management based to civilian management based system. For maintenance, this can be processed by integrating National Maintenance Support System. In order for us to undertake this procedure, we would need to develop maintenance units which are possible to be privatized and this will in turn reduce the military personnel executing job duties, improve service quality and prevent duplicate investments etc. For supply area, we will need to establish Integrated Military Logistics Center in-connection with national and civilian logistics system. This will in turn reduce the logistics time frame as well as required personnel and equipments. In terms of transportation, we will need to further expand the renting and leasing system. This will need to be executed by integrating the National Defense Transportation Information System which will in turn reduce the required personnel and financial budgets. Finally for training and education, retired military personnel can be employed as training instructors and at the military academy, further expansion in the number of civilian professors can be employed in-connection with National Defense Reformation. In other words, more active privatized civilian resources will need to be managed and used for National Defense Reformation.

• 공학교육연구
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• 제17권2호
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• pp.35-41
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• 2014

This paper deals with the ways that can improve the reliability of the course evaluation system based on reformation of the system and design of user interface for the practical applications. In the reformation of the system aspect, there are the improvements of the course evaluation questionnaires and the feedback of course evaluation to the lecturers. In the design aspect, a computer screen of the graphic user interface is redesigned to reflect the reformation of the system aspect issues. The results show the effectiveness in the reliability improvement.