• 융합신호처리학회논문지
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• 제3권2호
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• pp.83-88
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• 2002

본 논문에서는 온도보상과 POS 접속이 가능한 LPG 충전제어시스템을 구현하였다. 이 시스템은 16-bit 80C196 마이크로프로세서와, RAM, ROM, 비디오 driver, 프로그램주변소자 등으로 구성된다. 가스 유량계로부터의 부호화 유량신호와 장치교정 값, 온도센서로부터의 변환된 전압 값을 근거로 정확한 가스 충전량을 계산하고 솔레노이드 밸브를 on/off 함으로 충전량을 제어한다. 온도보상은 LP 가스 온도의 10-bit 아날로그-디지털변환에 의하여 0.5$^{\circ}C$의 분해능으로 이루어지며 온도보상의 범위는 영하 30도에서 영상 70도까지 가능하다.

• 한국컴퓨터정보학회지
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• 제1권2호
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• pp.73-94
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• 1995

본 논문은 유통정보 네트워크 활성화 방안에 대하여 효율적인 NDB(Network Data Base)을 설계하였다. NDB(Network Data Base)의 구조는 논리 구조, 격납 구조, 물리 구조로 형성되어 데이터는 하나의 레코드로서 표현되고 데이터들 간의 관계는 링크로서 표현되었다. 또한 데이터베이스의 논리적 구조를 표현한 자료 구조도(Data Structure Diagram:DSD)가 계층 모델로 나타내었다. 각 노드는 레코드 타입을 나타내었고, 타입들을 연결하는 방향을 지닌 링크, 논리적인 격납 형태로 구성되어 데이터베이스를 설계하는데 물리 매체상 서로 연관성 있게 설계되어 자료의 검색과 억세스 효율에 큰 영향을 미쳤다. 또한 설계된 시스템에 네트워크를 형성하고, 네트워크 표준화를 위해 OSI 환경하에서 POS(Point Of Sale)시스템을 이용하여 효율적인 유통 정보 네트워크를 활성화시켰다.

• 한국측량학회:학술대회논문집
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• 한국측량학회 2004년도 춘계학술발표회논문집
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• pp.45-49
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• 2004

The Navstar Global Positioning System(GPS) is an advanced navigation satelite system for determination of position, velocity and time. It can provide three-dimensional positioning on a global basis, independent of weather, 24 hours per day. Test results show that the carrier phase and pseudorange corrections are suitable for a kinematic GPS system. Using these corrections are more effective than using raw GPS data, since fewer bits are required for transmission Additionally, the number of computation required at the rover is reduced when corrections, rather than raw measurement are transmitted

• 한국문헌정보학회지
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• 제27권
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• pp.99-124
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• 1994

This study examines the establishment of Sea-po (서포) in the opening period of Korea at the end of the 19th century. The role they played, the particular situations and their geographical characteristics are researched, The earliest sea-po was Koh-je-hong sea-po, which was established in Tae­kwang-kyo at the end of 1880s. Around 1905, a specialised book distribution system was set up with establishement of Chu-han-yung book store, Kim-sang-man book store, Jesuit book store, Tae-dong su-si, Kae-myung sea-kwan, Tong-wha seo-kwan. The owners of the seo-pos were pioneers in introducing modern culture with nationalistic consciousness, although they were primarily businessmen and their social origins varied. The primary role of seo-pos was selling a variety of books but some combined printing and publication of books as well. It seems that publication business took roots around 1908, though it is difficult to know the accurate dates of first attempts. Some sea-pas offered book rental services for poor people who could not easily afford to purchase books. A certain amount of deposit had to be paid to benefit from the services. Jesuit Bookstore in Pyungyang had a library facility with a large stock or books in the same building open to public for free. These sea-pas started mainly in Seoul and Pyungyang, which were traditional centers for economic and cultural affairs. Early introduction of foreign cultures and commercial developments in these areas contributed to the establishment of sea-pos. The sea-po which took charge of book distribution in the provinces was set up around 1906. One of the important findings of this study is that the geographical distribution of sea-po shows the following three characteristics. First is that the area such as Seoul, Taegu and Chunju were the traditional centers of publishing culture from which Pang­gak-bon(방각본) emerged. Second characteristic is Pyungyang and the surrounding Pyungbuk province, and harbors like Inchon and Pusan, which had the benefits of early spread of modem cultures. Third characteristic is Kaesung and the surrounding Hwanghae province which bridged Pyungyang and Seoul. The reception of foreign cultures stimulated the commercial spirits traditionally attributed to Kaesung to establish sea-pas most actively.

• 한국컴퓨터정보학회논문지
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• 제11권5호
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• pp.75-86
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• 2006

일반적으로 영어를 한국어로 번역할 때, 대부분의 영어 명사 어휘들은 해당 어휘가 사용되는 문맥에 따라 다양한 한국어 명사로 번역될 수 있다. 따라서 영어 원문이 갖는 의미를 손실 없이 번역문으로 전달하기 위해서는 문맥에 맞는 올바른 한국어 대역어를 선택할 수 있어야 한다. 본 논문에서는 동사구패턴, 공기 정보에 기반한 의미벡터, 공기 품사 정보 및 한국어 문맥 통계 정보 등의 다양한 지식을 사용하여 영어 명사 어휘의 대역어를 올바로 선택하는 방안을 제공한다. 동사구 패턴은 사전과 코퍼스를 사용하여 구축되었으며, 의미 벡터는 영어 어휘가 특정 한국어 어휘로 번역될 때 공기하는 정보들의 조건부 확률을 나타낸다. 한국어 문맥 통계 정보는 한국어 코퍼스로부터 추출된 N-그램 정보를 나타내며, 품사 공기 정보는 대역어 선택 모호성을 지니는 영어 어휘와 통계적으로 깊은 관련성을 지니는 품사를 나타낸다. 마지막으로 본 논문에서 제안한 대역어 선택 모호성 해소 방안을 평가하기 위한 실험을 수행하였으며, 실험 결과, 제안하는 방법이 기존의 방법보다 성능이 좋다는 것을 확인할 수 있었다.

• Structural Engineering and Mechanics
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• 제86권4호
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• pp.473-486
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• 2023

Nowadays, urban centers are increasingly vertical, making architects and engineers look for more efficient tools to analyze the effects of wind on tall buildings. Topology optimization can be used as an efficient tool for the design of bracing systems. Therefore, this work obtained the wind loads that act in the CAARC building, following the Brazilian standard NBR 6123/1988 and using Computational Fluid Dynamics. Four loading situations were considered, using the SIMP and BESO methods to optimize two-dimensional structures. A comparison between the SIMP and BESO methods is presented, showing the differences in the geometry of the solution found by both methods, the percentage variation in the objective function values and the dimensionless processing time. The solutions obtained through the loads obtained by the Brazilian standard are also compared with the numerical solutions obtained by CFD. The results show that the BESO method presented more rigid structures compared to the SIMP method. The bracing structures obtained with the SIMP method always present similar patterns in the distribution and quantity of bars, in contrast to the BESO method where no characteristic topology pattern was observed. It was concluded that even though the structures obtained by the BESO method presented greater stiffness, the SIMP method was less susceptible to the methodology used for the determination of wind loads. Additionally, it was evident the great potential that the combination topology optimization and computational wind engineering have in the design of bracing systems of high functional and aesthetic standards.

• 디지털융복합연구
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• 제14권10호
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• pp.167-172
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• 2016

상권 분석은 유통 구조의 개선, 운영 원가의 절감 등의 이유로 많이 활용되고 있다. 특히, 상권 분석을 통해 매출 증가의 효과를 기대할 수 있기 때문에 경영 분야에서 널리 사용되고 있다. 그러나, 기존의 상권 분석 시스템은 유동 인구 및 주변 상점들의 환경 분석을 통한 것이 대부분이다. 따라서, 본 논문에서는 효율적인 상품 배치를 위한 경로 가중치 데이터 분석 시스템을 설계하였다. 이는, 기존 매출 중심의 상권 분석 방식을 적용하지 않고, 매장 안에서 고객 경로 이용 형태에 가중치를 적용한 데이터 분석 시스템이다. 기존의 POS 시스템과의 연동으로 백화점, 대형마트, 편의점 등 매장내의 효율적인 상품 배치를 제공하는 시스템이다. 이를 위해, 경로 데이터를 수신하고 가중치를 적용한 통계 데이터로 변환하여 관리자에게 시각화 모니터링 시스템으로 출력함으로써 매장에서 상품 배치의 효율성을 극대화시키는 시스템을 설계하였다.

• 한국ITS학회 논문지
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• 제10권4호
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• pp.71-77
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• 2011

본 논문에서는 고품질 모바일 VoIP 음성통신에 대한 객관적인 QoS를 제공하는 대화음질 측정시스템을 구현하였다. 대화음질 측정을 위해서 VoIP로 연결된 두 대의 스마트폰에 에코 및 잡음 제거, 음성 인코딩 및 디코딩, RTP (Real-TimeProtocol)을 적용한 패킷 생성, 지터버퍼 콘트롤, LC (Loss Concealment)를 포함한 POS (Play-out Schedule)로 구성된 VoIP음성 통화시스템을 구현하였다. 대화음질 측정 시스템은 VoIP로 연결된 두 스마트폰의 마이크, 그리고 스피커와 연결되어 각 화자별로 음성신호를 녹음한 후에, 녹음된 음성신호를 이용하여 CE (Conversational Efficiency), CS (Conversational Symmetry) 및 PESQ (Perceptual Evaluation of Speech Quality)를 측정하고, CE-CS-PESQ에 대한 상관관계를 측정한다. 본 논문에서는 다양한 SNR, IP 네트워크망 변동에 따른 지연, 손실 변화에 따른 CE, CS, PESQ를 측정하여 대화음질 측정시스템을 검증하였다.

• 한국의류학회지
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• 제30권1호
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• pp.1-11
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• 2006

The purpose of this study was to analyze the current CRM situation in Korean apparel industry. Specifically, research purposes were 1) to examine the concepts and benefits of CRM, 2) to examine CRM strategies, 3) to analyze CRM system(i.e., customer relationship management service, customer segmentation criteria, DB management system), and 4) to analyze the potential problems and CRM adoption plan. The subjects for this research were thirty CRM managers in Korean apparel firms classified by the company type(woman's wear, man's wear, casual wear, children's wear, retailer) interviewed from December 2003 to March 1004. The results of this study were as follows: First, the concept of CRM represented the prime customer relationship, continuous consideration, and customer management system. The benefits of CRM reflected re-sales, improvement of profit share, and acquisition of customer's data base. Second, concerning the CRM strategies, most companies focused on persistent customer management through mileage program, membership cards and also implemented product strategies such as demand forecasting, customization based on customer data analysis. We also found that industry preferred to use pricing strategies, for example, segmentation of customer through discrepancies of price in which customers are provided by discount and gift voucher services. Regarding distribution strategy, channel diversification, localized service, and convenient delivery system were used. As promotion strategies, they chose celebrating customers' personal events and promoting cultural events and issuing coupons. Third, regarding CRM system, information service was the most frequently adopted, important and highly beneficial category. Also POS/web-POS, homepage were main sources of information. RFM is the mostly commonly used customer segmentation criteria. Fourth, potential problems in CRM adoption were lack of CRM knowledge and performance measurement of CRM. Future CRM adoption plan included CRM education and development of CRM performance measures.

• 대한가정학회지
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• 제36권11호
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• pp.141-156
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• 1998

The purpose of this study was to investigate current QR technology usages and merchandisers' roles and information activities in the Korean apparel industry. Data were collected by interview and questionnaire with merchandisers in apparel companies, manufacturing apparels for both men and women. Statistical analyses were t-test, ANOVA, frequency with SAS program. The results of the study were as follows: 1. The usage of QR technology was generally low. But POS, bar-coding, logistics and small lot order were highly used compared to other technologies. CAD, automated sewing operation, unit product system, logistics, and small lot order were more used in domestic national brand than in import license brand. POS applications were more used in product planning division than in others. 2. Merchandisers played important roles in making major decisions on cost price, sales price, manufacturing request, delivery data, production quantity, produce mix, budget planning, market timing and delivery channels. Products planning was conducted mostly on a monthly basis. Price was determined mainly according to cost price, while the production quantity depended on the last year's sales. Usually sales were analyzed on a daily basis. 3. Merchandisers got more information on fashion them and color trend from foreign information sources than from domestic, while more information on fabrication from domestic sources. For fashion design information they used the equal amount from domestic and foreign sources. Over all degree of utilization in each field of fashion information was fugured rather high.