• 한국비블리아학회지
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• 제4권1호
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• pp.103-127
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• 1980

Due to the rapid growth of publications, librarians have been facing the problems caused by the shortage of stack as well as the quality deterioration of library collections. This naturally disappointed the user communities and the present library activities are weak and inadequate. It seems to the author that one of the desirable actions in remedying this problems is to weed library collections properly and regulraly. The purpose of this study is to establish weeding criteria in library collections, particulary in the fields of polictical science, economics and law In order to establish weeding criteria, shelf-time period which is the length of time that a book remains on the shelf between the last two users of a volume, was measured by examining the book cards or date-due slips of circulating books and collections which remained in the stack. The results of this study are as follows: (1) In the fields of political science economics and law, the shelf-time periods of general materials in Korean for circulation was measured. (2) This study shows shelf-time periods that vary in different subject fields. (3) Combining the shelf-time periods of books in active circulation and the total collection including books which have never been circulated, the size of library holdings which may satisfy a certain percentage of the current circulation can be estimated.

• 한국비블리아학회지
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• 제22권4호
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• pp.189-211
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• 2011

정보생산 및 정보유통환경의 변화에 따라 도서관에서 전자정보원의 비중은 지속적으로 높아가고 있다. 따라서 전자정보원의 이용률에 대한 통계데이터는 도서관 경영 및 정보서비스 제공에 중요한 지표로서 활용되고 있다. 본 연구에서는 전자정보원에 대한 정의 및 특징을 살펴보고 전자정보원과 관련된 이용통계표준에 대한 현황을 분석하였다. 또한 대형 벤더 및 출판사에서 생산되는 이용통계에 대한 현황을 분석하였다. 이를 기반으로 출판사 및 벤더들을 통하여 제공되는 전자정보원 이용통계를 도서관 경영 및 정보서비스 개발에 적용할 수 있는 방안을 도출하였다.

• 한국임상약학회지
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• 제29권4호
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• pp.286-294
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• 2019

Background: At the end of the'Waste Drug Disposal Project', collection and disposal of waste drugs remain a social issue. Objective: This study aimed to provide suggestions to improve the drug waste management system in Korea by comparing domestic and overseas relevant programs. Methods: This is a comparative study between South Korea, Australia, Canada, France, and the US. These overseas countries were selected because they have been operating waste drug management programs continuously to date. Comparison was conducted by a pre-determined analysis frame including legal regulation, enforcement program and its performance. Results: All selected countries except Australia had legal regulations on drug wastes. The US had the largest variety of drug waste disposal methods. Canada had recommended that pharmacies actively participate in drug waste withdrawal programs. France had the largest variety of methods to promote relevant programs, including window sticker, SNS, and app, as well as the highest level of awareness and participation. Australia had the lowest level of awareness and participation in pharmaceutical waste management programs. Pharmaceutical companies took responsibility of paying for these programs in the selected overseas countries. Conclusion: Further efforts should be made to establish a clear guideline including the role of pharmaceutical companies, and to develop various methods for the public to be aware of appropriate ways of disposing drug wastes in Korea.

• 한국조리학회지
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• 제23권7호
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• pp.204-219
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• 2017

The aim of this study was to examine the role of celebrity's traits on food service enterprises' media engagement, advertising effect (AD effect) and purchasing intention. Based on advance research, structural model of relationship between celebrity's traits and media engagement, AD effect and promotion of purchase was developed among the proposed constructs. Few empirical studies have been conducted to test the model. Date collection of study was from June 1st, 2017 to June 30th, distributing total of 300 issues and collecting total of 290 issues. Total of 271 questionnaires were used as the final analysis data as the nineteen questionnaires included missing information. The results can be summarized as follows: Celebrity's Traits significantly affected media engagement, AD effect and purchasing intentions. More specifically, mediating effect among the celebrity's traits and AD effect which came from media engagement was valid only if the subject of advertising effectiveness was on brands attitude. Based on the findings, theoretical and managerial implications were discussed to make one conclusion. As the media engagement was identified as a mediator between celebrity's traits and AD effect, certain brands which tend to enhance their AD effectivity should liaison proper celebrity.

• Wind and Structures
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• 제4권3호
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• pp.247-260
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• 2001

In the last three decades several comprehensive field measurement programs have produced significant insight into the wind effects on low-rise structures. The most notable and well published of these efforts are measurements being collected at the Wind Engineering Field Laboratory (WERFL) at Texas Tech University, measurements on low-rise structures in Silsoe, England and measurements on groups of low-rise structures collected in Aylesbury, England. Complementary to these efforts, an additional full-scale field investigation program has recently collected meteorological, pressure, strain and displacement data on a low-rise structure in Southern Shores, North Carolina. To date over seventy-five hundred data sets have been collected at the Southern Shores site in a variety meteorological conditions up to and including hurricane-force winds. This paper provides details of the system, its development, and preliminary assessment of its performance. A description of the field site, the instrumented structure, and the instrumentation system is provided. In addition, an example of the data collected during three hurricanes is presented. The primary goal of this paper is to provide the reader with the necessary technical details to appropriately interpret data from this experiment, which will be presented in future publications currently under development.

• 한국수자원학회논문집
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• 제35권1호
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• pp.13-24
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• 2002

본 연구에서는 역학적으로 실질적이면서도 단순화된 방법으로 폭풍과 같은 악후시에 임의의 해안단면에서 발생하는 소상파의 수동학적 거동에 대한 예측모델을 개발하고자 한다. 실제 크기의 폭풍과 조건하에서 사구의 침식을 모의하기 위해 수행된 대형조파수조 실험에서 계측된 실험자료가 모델 개발을 위해서 활용된다. 일반적으로 본 모델은 해안종단방향에서의 소상파의 파고, 속도 및 주기의 변화를 예측할수 있음을 보인다. 정량적으로 보다 나은 소상파 변수들에 대한 예측은 유의 소상파고가 영이 되는 해빈면의 높이, ymax에 대한 예측향상을 통하여 이루어질수 있다.

• 한국항해학회지
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• 제6권2호
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• pp.13-33
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• 1982

The NAVSTAR/GPS is a satellite-based navigation system that will provide extremely accurate three-dimensional position and velocity information to users anywhere on or near the earth. This system has been studied primarly for military use and thus the results of studies are seldom obtainable for civilian use up to date. Expecting this system to be opened to civilian use in the future, this paper aims to the collection of basic data of the PN phase modulated communication system adopted in the GPS system by computer simulation. The results of studies are as follows; 1) The PN phase modulation of the speed of 106b/s can be simulated by Fourier summation, the spectrum region which can be restricted is in the region of 0.5-1.5 MHz and spectrum number required is over than 270. 2) By computer simulation, it is verified that optimum r.f filter bandwidth is about 0.3 MHz for the case of $10^6$b/s PN codes phase modulated in 1.575GHz carrier. 3) In case that PN rate to data rate is between 10 and 100, the allowable minimum SNR to demodulate data signal correctly by optimum LPF is about 0.3. It is also verified that the larger the frequency ratio of PN code to the data code, the lower the allowable minimum SNR required.

• Journal of Ecology and Environment
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• 제42권4호
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• pp.285-291
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• 2018

The impact of climate change on animals has been globally documented. Especially, migration of birds has been extensively monitored as migratory birds are susceptible to any changes occurring both on breeding grounds and on wintering grounds. However, in contrast to spring migration, the patterns and the factors for autumn migration have not been well documented. In this study, we investigated the relationship with climate condition and the first arrival dates (FADs) of bean geese (Anser fabalis) and white-fronted geese (A. albifrons), the representative group of wintering birds in South Korea, using the data collected by Korean Meteorological Association during 1995-2016. Average temperature of September in wintering grounds has increased, and the FADs of the geese have advanced over the 22 years. Even when the influence of autumn temperature was statistically controlled for, the FADs of the geese have significantly advanced. This suggests that warming has hastened the completion of breeding, which speeded up the arrival of the geese at the wintering grounds. In order to assess the effect of climate condition on the arrival of the wintering migratory birds such as the geese in more detail, extensive data collection over many sampling sites and with long-term monitoring is needed.

• 대한한의학원전학회지
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• 제35권3호
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• pp.1-20
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• 2022

Objectives : Translations of Korean Medical Classical texts were analyzed quantitatively to verify their trend. Based on findings, accumulated problems and their solutions were discussed. Methods : A list of translated Classical texts in the field of Korean Medicine from the National Central Library collection was organized. Afterwards, the publication date, field, author information and content of the translated version were analyzed. Results : Of Chinese Medical texts, those from the Ming and Qing periods were most translated, while major texts pre-dating the Song period were left out. In addition, while texts in the fields of Shanghan-Jingui, comprehensive medical texts, scriptures, medical theories that were high in demand in educational and clinical sectors were actively translated, those in secondary fields were insufficiently translated. Of medical texts of Korea, those from the Joseon period were mostly translated, including major texts such as the Donguibogam and various kinds of texts reflecting research demands. Conclusions : In the future, texts that have not been translated need to be prioritized while basic elements need to be identified for better quality translation. To enable quantitative and qualitative expansion of Korean Medical Classical Texts translation, institutional and academic support is crucial.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제17권7호
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• pp.1935-1950
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• 2023

The arrival of the Internet of Things and 5G technology enables users to rely on edge computing platforms to process massive data. Data sharing based on edge computing refines the efficiency of data collection and analysis, saves the communication cost of data transmission back and forth, but also causes the privacy leakage of a lot of user data. Based on attribute-based encryption and blockchain technology, we design a fine-grained access control scheme for data in edge computing, which has the characteristics of verifiability, support for outsourcing decryption and user attribute revocation. User attributes are authorized by multi-attribute authorization, and the calculation of outsourcing decryption in attribute encryption is completed by edge server, which reduces the computing cost of end users. Meanwhile, We implemented the user's attribute revocation process through the dual encryption process of attribute authority and blockchain. Compared with other schemes, our scheme can manage users' attributes more flexibly. Blockchain technology also ensures the verifiability in the process of outsourcing decryption, which reduces the space occupied by ciphertext compared with other schemes. Meanwhile, the user attribute revocation scheme realizes the dynamic management of user attribute and protects the privacy of user attribute.