• International Journal of Computer Science & Network Security
• /
• 제24권6호
• /
• pp.89-98
• /
• 2024

Due to the increase in population and consequently the increase in the production of plastic waste, recovery of this part of the waste is an undeniable necessity. On the other hand, the recycling of plastic waste, if it is placed in a systematic process and controlled, can be effective in creating jobs and maintaining environmental health. Waste collection in many large cities has become a major problem due to lack of proper planning with increasing waste from population accumulation and changing consumption patterns. Today, waste management is no longer limited to waste collection, but waste collection is one of the important areas of its management, i.e. training, segregation, collection, recycling and processing. In this study, a systematic method based on machine vision for sorting plastic bottles in different colors for recycling purposes will be proposed. In this method, image classification and segmentation techniques were presented to improve the performance of plastic bottle classification. Evaluation of the proposed method and comparison with previous works showed the proper performance of this method.

• 경영과학
• /
• 제9권1호
• /
• pp.31-40
• /
• 1992

The size of software collection at any organization is increasing rapidly with the use of computer becomes popular for various applications. This trend points out the importance of proper 'catalog'or 'directory' for software collections, however, only 'title list' is found in practice. The problem of no proper directory with software collection would be more serious than the problem with book collection since browsing is not possible with softwares. Many of the expensive softwares will be a waste of money to purchase and to hold if no catalog about them is provided. In this paper the difficulties in applying AACR2 to software cataloging and the most important characteristic of computer software are discussed as well as presenting the necessity of localized information due to the requirement of a machine to be used, the difficulty using subject-based-call-number scheme, an expected way of searching software to design a location indicator, software qualifications to be cataloged, and so on. In addition, an analysis of randomly selected softwares after a cataloging practice is followed.

• 한국문헌정보학회지
• /
• 제22권
• /
• pp.109-141
• /
• 1992

University library must have a substantial collection development policy, by which the short and long term plannings are set up to meet the goals of university education and to support university function. Only when university library organizes collection building based on the well-planned policy, can it establish the systematic collection building, which can satisfy users, support continuity of work, use budget efficiently, and solve the space problem by with-drawing the materials. But most Korean university libraries, contrary to many foreign cases, don't have proper systematic collection development policy or guideline that controls overall library work from planning the collection of materials to evaluating and preserving them. Questionaire on whether university library has collection development policy or guideline was answered positively by only 6 cases out of 57 cases, which is just 10.5 percent. Even in cases that they have a guideline, the content of the copied guideline they sent was confined to acquisition, which is just a part of collection development. Collection development is a statement needed to set up long and short term plannings in consideration of the aims of the library and the needs of users and to shape and manage the library collection systematically. With the above conception and definition, we try to make a proper collection development policy and guideline for the Korean university libraries. Here we must define the object of the university. Object of university is to have good curriculum, good courses, research activities on the part of the faculty, enlargement of graduate school, and establishment of various institutes, etc. And in guideline, selector, method of selection, level of selection and arrangement of budget, etc. must be described concretely in its contents. Since collection development policy and guideline of Korean university libraries should concern their situation, we must confer with the result of the survey and analysis on the matter of collection determination. Here the contents include the priority of materials to be collected, method of collecting materials, arrangement of budget, and others. The purpose of this study is to develop a tenative collection development guideline in reference to the Jeonju University Library by means of analyzing the guiding principle, contents of the guideline, and present conditions of the Korean university libraries. The systematic collection development based on the Guideline for Collection Development of the Korean University Library, can offer a satisfactory service to the users of the university community, and also contribute to the development of the university itself as well as the university library.

• 한국도서관정보학회지
• /
• 제50권3호
• /
• pp.49-69
• /
• 2019

본 연구는 공공도서관의 자료이용공간 내 장서포화 상태를 측정하고, 이를 해결할 수 있는 방안을 제안하는데 그 목적이 있다. 연구의 수행을 위하여 특정 지방자치단체 한 곳을 선정하여 이 지방자치단체가 운영하는 공공도서관의 도서관별 장서포화상태를 측정하여 장서포화의 상태와 원인을 밝히고자 하였다. 본 연구를 통해 도출한 연구 결과를 토대로 우리나라 공공도서관에서 장서포화도를 측정하여 장서포화에 대한 심각성을 인지하고, 장서포화의 원인을 파악하여 이를 해결해야 한다는 당면과제를 제시하는데 있다.

• 한국문헌정보학회지
• /
• 제43권3호
• /
• pp.247-267
• /
• 2009

이 연구는 국내 공공도서관의 장서관리 현황을 분석하고 요구사항을 조사하는데 그 목적이 있다. 장서관리의 세부운영지침을 조사하고 공공도서관의 유형에 따라 장서관리 지침 및 요구사항을 파악하고자 하였다. 공공도서관의 장서관리 지침은 세부적으로 일부 이용자와 관련하여 명시하기 쉬운 업무를 위주로 성문화된 지침을 가진 곳이 많았으나 포괄적으로 장서관리를 다루는 체계적인 장서관리 지침이 마련된 곳은 없었다. 특히 작은도서관, 병원, 교도소, 병영도서관 등 전문 인력과 재원이 부족한 작은 규모의 도서관에서는 체계적인 장서관리 업무에 어려움을 겪거나 실무에 바로 참고할만한 지침을 갖고 있지 못한 경우가 많았다.

• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2007년도 춘계학술대회 논문집
• /
• pp.227-235
• /
• 2007

The railway catenary is softer in the middle of a span than at the end. This stiffness variation induce the vertical motion of a moving pantograph, which results in the large variation of contact forces. To reduce the vertical motion of a pantograph, we can introduce a pre-sag of the contact wire. The pre-sag changes merely equilibrium position of the contact wire. Because the pantograph must follow the sag added to the motion of the contact wire, the sag gives downward forces to the pantograph. If the pre-sag is proper, the variation of the vertical motion of the pantograph is reduced. However, excessive sag worses the current collection performance because the pantograph receives too large downward forces by the contact wire. The objective of the paper is to establish the theoretical basis to understand how the pre-sag affect the contact force variation and to propose the proper sag for the railway catenary for the train speed up to 200 km/h.

• 대한두경부종양학회지
• /
• 제17권1호
• /
• pp.8-12
• /
• 2001

It is well established that cervical lymph node metastasis is the base of clinical study on head and neck cancer. But few studies have been reported on lymph node metastasis of head and neck cancer in Korea. We consider it essential that studies on cervical lymph node metastases are conducted on pathologically proven database. Therefore, We must have database and consitent system for documentation and data collection of neck dissection specimen for prospective and retrospective study. Herein, We suggest several points from our experiences performing the proper data collection and documentation of neck dissection specimen.

• 상하수도학회지
• /
• 제24권5호
• /
• pp.573-580
• /
• 2010

Average pressure in a pipe network is one of critical factors to estimate the flow distribution and to calculate UARL (Unavoidable Annual Real Losses) value in ILI (Infrastructure Leakage Index). While its collection period and measuring location are essential to obtain average pressure, their standard method have not been established so far. In this study, proper method including its procedure for data collection period and measuring point for average pressure were suggested using non-exceedance probability concept in the water distribution network.

• 전기학회논문지
• /
• 제65권12호
• /
• pp.1979-1985
• /
• 2016

A protection algorithm using a voltage-controlled overcurrent element for a looped collection circuit in a wind farm is suggested in this paper. Because the proposed algorithm uses voltage relaying signals as well as current relaying signals, any fault in the looped collection circuit can be cleared by voltage-controlled overcurrent relays located at the two adjacent relaying points, the nearest place in each direction from the fault point. The algorithm can also distinguish the external faults which occur at the outside of a wind farm from the internal faults. It means that the proposed algorithm can provide the proper ability of protection coordination to the relays in the looped collection circuits of a large wind farm. The performance of the proposed algorithm is verified under various fault conditions using PSCAD/EMTDC simulations.

• 대한임상검사과학회지
• /
• 제51권4호
• /
• pp.495-503
• /
• 2019

본 연구는 채혈실의 적정인력에 대한 표준산출모형을 제시하기 위하여 임상병리사의 채혈 업무량 평가에 따른 적정인력 규모를 산정하였다. 연구대상으로 600에서 2,000병상 사이의 11개 대학병원을 선정하였다. 표준산출모형을 위한 채혈 관련 주요 인자를 선정하고 국내현황조사, 인자의 병원 간 분석, 표준채혈시간을 제시하여 채혈 적정인력을 산정하였다. 연구대상으로 600에서 2,000병상 사이의 11개 대학병원을 선정하였다. 소아와 노인을 제외한 20세 이상~60세 미만의 성인 외래채혈환자를 대상으로 측정한 14단계 표준채혈시간은 4분 8초이었다. 하루 8시간 기계적 채혈을 한다고 가정할 경우 1명의 임상병리사가 채혈 할 수 있는 최대건수는 100건으로 분석되었다. 결론적으로 채혈에 종사하는 임상병리사의 1일 적정채혈 환자 건수는 100건 이하로 하는 것이 적정할 것으로 사료된다. 그리고 채혈적정인력은(채혈업무 100% 비중)=연간적정건수/((1일 근로시간/건당 소요시간)×연간 근무일수)이므로 채혈 적정인력(채혈업무 100%비중)=연간적정건수/(100×연간 근무일수)라 할 수 있다.