• 한국위성정보통신학회논문지
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• 제9권2호
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• pp.28-32
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• 2014

본 논문에서는 LTE 시스템을 위한 Cyclostationary 신호 검출 기법의 성능을 분석하였다. 스펙트럼 사용 효율을 높이고 주파수를 공유하는 인지무선(Cognitive radio, CR)기술에 Cyclostationary 신호검출 기법을 적용하여, Long term evolution(LTE) 환경의 주파수 대역 내에서 신호를 검출하였다. LTE 시스템은 3rd generation partnership project(3GPP)에서 최대 전송률을 높이고, 낮은 지연을 제공하기 위한 표준으로 지정되었다. 본 논문에서는 하향링크 직교 주파수 분할 다중 접속(Orthogonal frequency division multiple access, OFDMA) 신호를 기준으로 LTE 신호를 생성하였으며, 생성된 신호의 Segment 및 임계값에 따라 검출성능을 분석하였다. 모의실험에 적용된 채널은 가우시안 채널이고, 추후 LTE 시스템에 CR을 적용하기 위한 향후 연구 방향에 대하여 논의하였다.

• 통상정보연구
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• 제15권3호
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• pp.387-409
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• 2013

본 논문은 중국의 제3자 물류산업의 현황 및 문제점들을 체계적으로 분석하여 중국의 제3자 물류산업의 서비스 수준이 비교적 낮고, 화주의 만족도도 낮으므로 협력관계가 향상되어야 한다는 결론을 내렸다. 다음으로 국내외 많은 선행연구들을 바탕으로 제3자 물류서비스 기업과 화주기업과의 파트너쉽에 관련된 연구 성과들을 종합적으로 서술하였을 뿐만 아니라 기존 연구의 한계점에 대해서도 분석하였다. 또한 물류서비스 성과의 평가모형을 토대로 상호파트너쉽, 운영, 경영성과를 기초로 한 제3자 물류서비스 성과 평가모형을 구축하였고 파트너쉽을 측정함에 있어서의 파트너쉽 평가모형을 결합시켰다. 이를 통해 물류파트너쉽 성과의 실제모형에 관한 쌍방의 파트너쉽 실현과 관계친밀도가 향후 협력에 중요한 영향을 미친다는 것을 밝혀내고 3PL 파트너쉽 실현, 관계친밀도를 3차원으로 평가하는 물류성과 파트너쉽 모형을 설정하였다. 그리고 종합물류서비스 성과와 파트너쉽 평가모형과 고객만족도를 함께 결부시켜, 물류파트너쉽 이론적 모형을 확정하였다. 마지막으로 제3자 물류파트너쉽에 관한 설문조사 데이터를 수집하여 실증분석을 실시하였다.

• 한국생활과학회지
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• 제8권1호
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• pp.29-43
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• 1999

This study was carried out to investigate the view of the choice of spouse and marriage of unmarried women's college students. Most respondents in this study think that the optimum age for marriage is 27 and prefer a seniority in age of 3-4 years who feels in love as the future husband. Also, they wish that the job of future husband be a technical expert. Approximately 63% of respondents recognize the necessity of marriage but 38% of respondents do not show a positive opinion for marriage. They also expect the emotional stabilization or partnership from marriage. Majority of respondents show a negative response to the marriage as means to solve economic difficulties. However, only 25.9% of respondents strongly show the negative opinion. In the acquaintance of the opposite sex in the purpose for marriage, most respondent are negative. However, they are positive in keeping virginal purity prior to marriage. Also, it has revealed that respondents want a partnership through allotment in domestic duties including baby sitting rather than household management through patriarchal system. In household economy, they prefer sharing living expenses and having a job after marriage. In choosing an ideal husband, although the academic background is considered as an important factor, but the present occupation is more important than the academic background. Also, one of the priority to choosing a spouse is influenced by each household circumstance and economic balance. About half of respondents want their parents-in-law to be alive, however, few respondents want to live together with parents-in-law.

• 산업공학
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• 제13권3호
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• pp.296-305
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• 2000

In supply chains, coordination between a manufacturer and suppliers is regarded as the most important issue when partnership of organizations is considered. Since the suppliers are external to the manufacturer and poor coordination between them results in excessive delays and ultimately leads to poor customer service, manufacturers need a new methodology to select suppliers and to manage and enhance the partnership between manufacturer and suppliers. We suggest a methodology that extends knowledge obtained from the supplier selection process to the supplier management process. We reserved a word, the supplier selection and management system (SSMS) for this methodology. In this paper, we explain how the SSMS is applied to a real supply chain. The methodology identifies the managerial criteria using information derived from supplier selection process and makes use of them in the supplier management process. These managerial criteria include key criteria that are major criteria required by the manufacturer for the best quality of parts from suppliers according to the character of each part, and weak criteria that show the shortcomings of selected suppliers as compared with alternative suppliers with regard to each criterion. The effectiveness of supplier management with managerial criteria was verified by a t-test and a correlation analysis with data collected and hypothesized from a Korean air-conditioner manufacturer.

• 한국정보통신학회논문지
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• 제8권8호
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• pp.1613-1619
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• 2004

긴 블럭 크기의 터보부호는 AWGN(Additive White Gaussian Noise) 채널 환경에서 매우 좋은 성능을 보이는 것으로 알려져 있으며, 또한 3GPP(3rd Generation Partnership Project)의 W-CDMA(Wideband Code Division Multiple Access)에서는 터보부호를 에러 정정 코드로 강력하게 권장하고 있다. 최근 실시간 통신 시스템을 위해서 짧은 블럭 크기를 갖는 터보부호에 대한 관심이 고조되고 있다. 따라서 본 논문에서는 ITU-R 실측 채널 모델에서 1/3의 부호화율과 192 비트의 짧은 프레임 크기를 갖는 터보부호를 고려하였다. 본 논문에서는 MRC(Maximal Ratio Combining) 다이버시티와 SOVA(Soft Output Viterbi Algorithm)에 기초한 터보부호를 동시에 갖는 RAKE 수신기를 적용한 10MHz 시스템 대역폭을 갖는 W-CDMA 시스템의 성능을 분석하였다.

• 대한수학교육학회지:수학교육학연구
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• 제15권2호
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• pp.215-232
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• 2005

컴퓨터 대수 체계(CAS) 계산기는 점차 학교와 대학에서 보편화되어가고 있다 이 계산기는 교사와 학생들에게 꽤 정교한 수학적 기능을 제공하지만, 현재로서는 어떻게 잘 활용될 수 있는지에 대해서 명확하지 않다. 특히 학생들의 학습과 문제 해결의 통합은 문제로 남아있다. 본 논문에서 우리는 TI-89 CAS 계산기를 대학에 입학하려는 학생들에게 도입하는 연구에서 이러한 문제를 제기하고 학생들이 그들의 학습에서 CAS 계산기를 조작하면서 형성하는 협력 관계의 여러 측면을 기술하였다.

• 보건교육건강증진학회지
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• 제30권4호
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• pp.77-85
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• 2013

Objectives: This paper discusses the current contexts of the collaboration between public health centers(PHCs) and community partners for health promotion. Then it suggests directions for the development and enhancement of the collaboration. Methods: The discussion in this paper is based on key literature on community health promotion, including literature reviews and case reports. Results: PHCs are mostly engaged in networking and cooperation rather than collaboration with the community. A typical pattern of cooperation is where PHCs provide healthy-setting types of programs to the community in single-partnered relationships. Current cooperation rarely involves co-planning by a multi-partnered partnership, and is greatly influenced by the interest of PHC directors and PHC performance evaluation indicators. Systems change is recommended to foster collaboration for community health promotion. Such change involves: shared understanding of health promotion and collaboration, inclusion of collaboration mechanism in public health governance, leadership development, capacity enhancement of all partners. role definition of PHCs for community collaboration, and development of collaborative system, at the least. Conclusions: At this point where collaboration should be more than rhetoric, multi-faceted, intersectoral, and concurrent approaches are required to create discourses, to develop cases, and to share experience for actual realization of collaboration for community health promotion.

• 보건교육건강증진학회지
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• 제33권4호
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• pp.89-100
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• 2016

Objectives: Life style modification leads to decrease health risk and change of health status for person at health risk. This study aimed to suggest essential components and effective strategies for customized health management service to provide individual and risk group in public and private health care organizations. Methods: To systematic review the essential component of health management service, I performed to collect political legislation, research papers, reports, publication and public release for heath management service from 2008 to 2016. Essential components of heath management service were service scope, service design, organizations and applied technology. Results: Service cope was composed of health risk factors, such as smoking, drinking, nutrition, physical activity and weight control. Main strategies were customized health management services, personalized behavior modification programs, evidence-based service protocol, utilization of information and communications technology (ICT), multi-dimension and multi-level approach, and public and private organizations partnership through health policies and health care system. Conclusions: To make the most of the limited resources, it should require a systematic approach that focuses on continuous monitoring and partnership of health management service.

• 가정과삶의질연구
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• 제30권5호
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• pp.149-161
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• 2012

Family policy and parents support policy are similar in that they are both object-oriented, not function-oriented. An object-oriented policy, different from a function-oriented policy, is demander-oriented in that it combines the existing policies from the object-perspective. Parents support policy and family policy are very similar in that they are both object-oriented policies and emphasize the perspective of the demanders: the parents and family. As is the case for all policies, if the ministries concerned with the policies are different, the projects are promoted from different delivery systems, so it is difficult to link them together. However, it is essential to relate the two policies because a partnership between families and schools, the subjects of the policy, is the basis of healthy family and a healthy society. Therefore, this research analyzes the current family policy and parents support policy, and examines the necessity and possibility of relating the two policies. This analysis is meaningful in that it seeks consilience between the policy areas, and seeks a new demander-oriented paradigm construction system.

• 정보보호학회논문지
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• 제14권3호
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• pp.137-144
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• 2004

3GPP-WLAN(3rd Generation Partnership Project-Wireless Local Area Network) interworking은 WLAN UE(user equipment)에 의한 3GPP 시스템내에서 자원 이용과 서비스 접근을 의미하며, 3GPP 서비스와 기능을 WALN 액세스 환경으로 확장함으로써, 3GPP 시스템에 무선 액세스 기술로 WLAN을 보완적으로 이용하는 것을 목적으로 한다. 본 논문에서는 3GPP-WLAN interworking에서 UE 개시 터널 설정을 위한 효율적인 메커니즘을 제안한다. 제안된 메커니즘은 UE와 3GPP AAA(Authentication, Authorization Accounting) 서버 사이의 인증과 키 일치 과정에서 미리 분배된 비밀키에 기반 한다. 따라서 UE에서 많은 계산을 필요로 하는 모듈러 지수승 연산과 공개키 서명 연산을 피할 수 있다. 또한 제안된 기법은 UE와 PDGW(Packet Data Gateway) 사이에 상호 인증과 세션 키 설정을 제공한다.