• 한국항해항만학회:학술대회논문집
• /
• 한국항해항만학회 2006년도 International Symposium on GPS/GNSS Vol.2
• /
• pp.399-403
• /
• 2006

Software-based GNSS receivers have the great advantage in flexibility compared with conventional receivers. But it has some problems to processing IF level Signal RAW data, need long time to process long term data and TTFF is long because the process is too slow. So this time, we concentrated on the signal acquisition, and examined the speedup technique. Using this technique, the acquisition was speedup dramatically, and signal-to-noise ratio was improved.

• 한국국방경영분석학회지
• /
• 제30권1호
• /
• pp.168-188
• /
• 2004

Integrated Logistic Support (ILS) is a management and technical process whereby all the diverse elements needed to fully operate, maintain, and totally support a materiel system in the field are identified, developed, and deployed simultaneously and on an equal priority with the item of materiel being supported. The test and evaluation (T＆E)of ILS act the important role of reduction of life-cycle cost and keeping of good performance for weapon system. In this article, we suggest the alternatives for improvement in the test and evaluation of ILS during weapon system acquisition. It is hoped that this research is valuable and beneficial to persons related weapon system acquisition, in order to maximize the efficiency of defense acquisition management by reducing the life-cycle cost and enhancing the quality of weapon system.

• 한국국방경영분석학회지
• /
• 제28권2호
• /
• pp.95-115
• /
• 2002

Configuration management is a process that establishes and maintains consistency of a product with its requirements and configuration information throughout its life cycle. This paper deals with the improvement of configuration management for weapon system. We analyze configuration management system, organization, human resource, regulations, and automated system of USA. Then we apply the ideas to our proposal for the improvement of configuration management. The proposal for the improvement of configuration management consists of three parts. The first one is the improvement of configuration management for weapon system by R&D, the second one is the improvement of configuration management for weapon system by foreign acquisition, and the last one is the improvement of configuration management in the aspects of organization, human resource, regulations, and automated system. This paper will be contributed to the activation of configuration management system and the efficiency of acquisition project management.

• 한국산업정보학회논문지
• /
• 제14권4호
• /
• pp.75-90
• /
• 2009

생산성 향상과 효율적인 프로세스 관리는 기존 업무의 문제점을 올바르게 파악하는 것에서부터 시작한다. 또한 데이터 수집에서 필요한 정보를 도출하는 데 많은 시간이 소요될 경우 고객의 요구와 수요를 충족시키고 업무의 효율성을 높이기 위한 지속적인 프로세스 관리가 더욱 어려워진다. 본 논문은 실시간 정보획득 기술의 도입을 통해 제조공정 관리상 발생 가능한 여러 문제점을 개선하기 위한 방안과 기초적 의사결정을 위한 상황인지(Context awareness) 시스템을 제시하는 것을 목적으로 한다. 공정 작업 중 획득한 데이터를 바탕으로 각 작업을 자동으로 분류하는 판단규칙을 제시하여 제조 현장에서의 상황인지를 구현하고자 하였다. 그리고 제안하는 개념과 구조를 작업자가 신속하게 문제를 파악하고 지시사항을 전달할 수 있는 사례를 기본적 시스템으로 구현하였다. 생산요소 객체 및 정보시스템의 데이터 일치와 공정에 대하 지속적이 모니터링을 통해 비효율적 자원 할당 및 공정 지연을 측정하고 해결하며 가시성을 높여 업무 효율을 지속적으로 향상시킬 수 있을 것이다.

• 한국어교육
• /
• 제29권3호
• /
• pp.165-196
• /
• 2018

This study examined the language acquisition of children from Chinese families in Korea under the bilingual background of Korean and Chinese, focusing on pronunciation and vocabulary. First, in the analysis of pronunciation acquisition, children correctly realized the lenition, aspirated sound, glottalization, palatalization, nasalization, and liquidization while the realization of pronunciation rules for unfamiliar words was low. There were also errors caused when the application principles of pronunciation were not accurately understood or they were not partially acquired. Second, in the analysis of vocabulary acquisition, the acquisition of receptive vocabulary was in the order of verb, noun, and adjective while they clearly understood vocabulary used in the actual relationships with school, family, and peers. In the acquisition of productive vocabulary, they showed the 'meaning-centered principle' of learning the meaning of vocabulary first and then learning its form afterwards. The amount of study and exposure to Korean language had effects on the improvement of vocabulary. Even though this study focused on the errors and characteristics in the acquisition process of Korean pronunciation and vocabulary for children from Chinese families in Korea, it could not clearly find out which one would have greater effects on the acquisition of Korean language. However, lots of exchanges and experiences with surrounding environment and peer group had great effects on the language acquisition and language acquisition transfer of children.

• 전자공학회논문지A
• /
• 제33A권5호
• /
• pp.24-30
• /
• 1996

In this paper, we propose a fast code acquisition method that can reduce drastically the mean acquisition time of the direct sequence spread spectrum (DS-SS) system by using and integrated search and verification (ISV) scheme. The proposed method performs simultaneously the search and verification processes at every search cell, through storing sufficiently long signal samples enough to perform the verification process form the previously received samples. We analyze and acquisition performance in the case of Gaussian channel to evaluate theacquisition perfomrance of the proposed method. From the simple numericl analysis result, we have shown that the acquisition performance of the proposed method is better than that of the conventional serial search method, and the performance improvement becomes more prominent as the channel environment becomes degraded.

• 인터넷정보학회논문지
• /
• 제21권2호
• /
• pp.131-138
• /
• 2020

무기체계 소요제기부터 연구개발, 시험평가, 운영유지까지 국방 무기체계 획득 전 과정에서 활용하고 있는 국방M&S(Modeling & Simulation)정보를 과학적이고 체계적으로 관리하기 위해 SBA(Simulation Based Acquisition)통합정보체계가 구축·운영되고 있다. 국방 무기체계 획득 전 수명주기에 M&S자원을 적극적이고 효과적으로 활용하기 위해서는 SBA통합정보체계의 효율적인 운영방안이 필요하다. 이를 위해 SBA통합정보체계의 이용현황을 식별하고 운영성과측정을 수행한 결과, M&S자원 활성화와 획득업무 지원을 위해서는 SBA통합정보체계 운영 절차 수립과 더불어 세부적인 제도 마련이 필수적인 것으로 판단하였다. 본 논문에서는 SBA통합정보체계의 효율적인 운영을 위해 국방 M&S 정보관리 현황을 분석하고 국방 M&S 활성화와 체계적인 운영을 위한 정보체계의 개선방안을 제시한다.

• Journal of information and communication convergence engineering
• /
• 제6권1호
• /
• pp.47-50
• /
• 2008

A novel high channel efficiency transceiver based on a fast acquisition frequency synthesizer has been designed. The direct digital synthesis (DDS) technique is applied and a simple memory look-up table is incorporated to expedite channel acquisition. The technique simplifies the frequency control process in the transceiver and thus reduces the channel switching time. As a result, the channel efficiency is improved. The designed transceiver is ideal for frequency hopping mobile communication applications.

• 기술경영경제학회:학술대회논문집
• /
• 기술경영경제학회 1999년도 제15회 하계 학술발표회 논문집
• /
• pp.176-202
• /
• 1999

Korea has exerted her efforts to assimilate nuclear power technology, and reportedly localized 95 percent of nuclear power technology by 1995. This paper investigates the evolution of nuclear power program in Korea to exploit the development process of the nuclear power industry and key factors for the technological localization of nuclear power plant. In developing countries, an imitative catching-up process can be shown as a course for developing the absorptive capacity of foreign technology, which depends on prior knowledge base and the intensity of effort. The process of technological learning consists of five stages including preparation, implementation of foreign technology, acquisition of peripheral technology, acquisition of core technology, and improvement f foreign technology. Moreover, this paper discusses six essential factors that have influenced the successful achievement of technological localization of nuclear power plants in Korea. They include the role and strategies of the government, the leading role of utility firm, the development and cooperation of the related organizations, the development of human resources and their efforts, market conditions and the assistance of foreign donors, and social conditions. Finally, this paper discusses about implications offered by the Korean experience for other developing countries.

• International Journal of Advanced Culture Technology
• /
• 제7권3호
• /
• pp.92-96
• /
• 2019

This study analyzes the problems of fire qualification information websites and job search websites due to incomplete information in the job search process and suggests an improvement plan. It has been confirmed that the main reason for the cost of job searching is incomplete information required for a job search and job search through existing analysis. As a result, it is suggested to construct a smooth information system for economic entities and to provide easy access to information by mitigating the incompleteness of information. Based on this, analysis of the problems of Korean qualifications in the firefighting realm reveals that there is a qualification holder information and a job information site, and a qualification holder management system is established but only information of either qualification acquisition information or employment information is provided. In addition, it is easy to access information through a qualification acquisition information and employment information site via the Internet, but there are inconveniences that qualification acquisition information and employment information are dualized. In order to improve this, it is necessary to build a new customized integrated qualification management system that covers existing Q-net qualification acquisition information and worknet employment information.