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Fast Neutron Beam Dosimetry (속중성자선의 선량분포에 관한 연구)

  • Lee Hyo Nam;Ji Young Hoon;Ji Kwang Soo;Lee Dong Han
    • The Journal of Korean Society for Radiation Therapy
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    • v.9 no.1
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    • pp.71-81
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    • 1997
  • I. Objective and Importance of the Project We have been using MC-50 cyclotron and NT-50 neutron therapy machine for treating cancer patients since 1986 at Korea Cancer Center Hospital. It is mandatory to measure accurately the dose distribution and the total absorbed dose of fast neutron for putting it to the clinical use. At present the methods of measurement of fast neutron are proposed largely by American Associations of Physicists in Medicine (Task Group 18), European Clinical Neutron Dosimetry Group, and International Commission on Radiation Units and Measurements. The complexity of measurement, however, induce the methodological differences between them. In our study, therefore, we tried to establish a unique technique of measurement by means of measuring the emitted doses and the dose distribution of fast neutron beam from neutron therapy machine, and to invent a standard method of measurement adequate to our situation. II. Scope and Contents of the Project For establishing a unique technique of measurement and inventing a standard method of measurement of fast neutron beam, 1. to grasp the physical characteristics of neutron therapy machine 2. to study the principles for measrement of fast neutron beam 3. to get the dose distribution (dose rate, percent-depth dose, flatness etc) throught the actual measurement 4. to compare our data with those being cited world-widely.

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Analysis and Consideration of Plagiarism Cases to Establish Research Ethics in Korea

  • KWON, Young-Eun;JEON, Ye-Won;KWON, Lee-Seung
    • Journal of Research and Publication Ethics
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    • v.1 no.1
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    • pp.1-9
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    • 2020
  • Purpose: The main purpose of this study is to identify the cause and problem of one plagiarism and suggest a solution. Research design, data and methodology: Based on the Center for Research Ethics Information, this study analyzed the total of 17 cases from October 3, 2017 to June 16, 2020. Results: As seen in the case of this study, the Supreme Court's verdict on plagiarism requires clear sources, whether it is plagiarism or self-plagiarism, and the criterion for plagiarism is the time of writing the work, and the final judgment will be conducted by the court. Evidence-based sources indicate that the researcher or professor provides a lot of anticipation to the academic development and readers who read it. In addition, it is necessary to revise and submit the thesis judge's point of view in the thesis for doctoral dissertation within the proper and reasonable scope. The implications are also very large. Lastly, the reason for dismissal of a doctoral dissertation plagiarized at the time of recruitment is recognized Research ethics should be institutionalized in educational institutions or research institutions. Conclusions: Research ethics education should be strengthened in universities and research institutes. Research ethics is a code of ethics that must be ruled by everyone who explores.

Development of a Computer-assisted Cost Accounting System Prototype for Hospital Dietetics (병원 영양과의 재무관리 시스템 전산화 모델에 관한 연구)

  • 최성경
    • Journal of Nutrition and Health
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    • v.20 no.6
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    • pp.442-455
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    • 1987
  • The purpose of the study were to assist foodservice managers in complex decision making by utilizing computerized cost accounting system and to relieve managers from repetitive and routine tasks so that more adequate patient care and consultation can be provided. The scope of the computer-assisted cost accounting system consists of budget, menu planning, purchasing, inventory, cost control and financial reporting. The content of the computerized system are summarized as follows ; 1) For budgeting monthly income was estimated by calculating unit cost of each meal and forecasting serving numbers. The actual serving numbers for patients and employees were totaled everyday, and utilized as the basic data base for estimating income and planning menu. The monthly lists of meal sensus were generated. 2) for menu planning concersion factors were computed based on the standarized recipe for 50 servings. Daily menus for patients and employees which include total amounts of each ingredient and cost analyzed information were generated. 3) Daily and monthly purchasing report for each food item classified by patient and employee meals were generated. 4) Inventory transactions such as recipts and issues were totalized daily for each stocked item, and monthly inventory reports were generated. 5) Cost analysis reports for each menu item were generated into two ways based on the budget coat as well as the purchasing cost. 6) Editing new recipes and updating food costs change to the data base were carried out. 7) Financial reports were generated monthly, first-half and second-half of the year, and yearly basis.

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Curvilinear free-edge form effect on stability of perforated laminated composite plates

  • Zerin, Zihni;Basoglu, Muhammed Fatih;Turan, Ferruh
    • Structural Engineering and Mechanics
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    • v.61 no.2
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    • pp.255-266
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    • 2017
  • In this study, self-supporting roofing elements especially convenient for large-span structures such as stadium, airport terminal, mall, coliseum, etc. were examined with respect to critical buckling load. These elements were assumed as laminated composite plates and, variation of free-edge forms, cutout types and lamination configurations were used as design parameters. Based on the architectural feature and structural requirements, the effects of curvilinear free-edge form on critical buckling load were focused on in this research. Within this scope, 14 types of lamination configuration were specified according to various orientation angle, number and thickness of plies with a constant value of total plate thickness. Besides that, 6 different types of cutout and 3 different free-edge forms were determined. By combining all these parameters 294 different critical buckling load analyses were performed by using ANSYS Mechanical software based on finite element method. Effects of those parameters on critical buckling load were evaluated referring to the obtained results. According to the results presented here, it may be concluded that lamination conditions have more significant influence on the critical buckling load values than the other parameters. On the other hand, it is perceived that curvilinear free-edge forms explicitly undergo changings depending on lamination conditions. For future work, existence of delamination might be considered and progression of the defect could be investigated by using non-linear analysis.

Influence of ground pumice powder on the bond behavior of reinforcement and mechanical properties of self-compacting mortars

  • Benli, Ahmet;Karatas, Mehmet;Sastim, M. Veysel
    • Computers and Concrete
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    • v.20 no.3
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    • pp.283-290
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    • 2017
  • The aim of this study is to investigate the effect of the bond strength of self-compacting mortars (SCMS) produced from ground pumice powder (GPP) as a mineral additive. In this scope, six series of mortars including control mix were prepared that consist of 7%, 12%, 17%, 22% and 27% of ground pumice powder by weight of cement. A total of 54 specimens of $40{\times}40{\times}160mm$ were produced and cured at the age of 3, 28 and 90-day for compressive and tensile strength tests and 18 specimens of $150{\times}150{\times}150mm$ mortar were prepared and cured at 28 days for bond strength tests. Flexural tensile strength and compressive strength of $40{\times}40{\times}160mm$ specimens were measured at the curing age of 7, 28 and 90-day. Mini V-funnel flow time and mini slump flow diameter tests were also conducted to obtain rheological properties. As a result of the study, it was observed that the SCMs containing 12% of GPP has the highest bond strength as compared to control and GPP mortars. Compressive strength slightly increased up to 12% of GPP.

A Proposal on Livestock Farmstead Planning Design by the Field Survey Results (현장 조사를 통한 신농촌의 축산농장 모형의 개발 연구)

  • 오무영;이신호
    • Journal of Korean Society of Rural Planning
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    • v.1 no.2
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    • pp.67-76
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    • 1995
  • The actual condition of farmstead, mainly livestock facility, was surveyed in ChungChongBukDo in order to find out factors and problems of farmstead planning design. From the data collected, a type, plot, size and scope of farmstead, relationship of house and farmstead, topography, climate, proprietor's opinion on them were analyzed or obtained as the basic design criteria for planning: designs. The best type of farmsteads was individual farm having livestock facilities. They were mostly breeding a kind of livestock without their plan and Bone planning at residing area. The south aspect of the facility was extremely much and slope of the land was mostly 15。 below. Wind blows from East-South in summer and winter wind are West-North extremely much. Sun heat was mostly above 6 hours. In the case of collective and composite farmstead, proprietors wanted that a head of cow has 1,000-3,000 pyeong, the area of facility has 1,500-2,000 pyeong, total area of farmstead has 45,000-400,000 pyeong and an estimated expense is 0.2 - 1.5 billion won. Farmstead planning design was proposed through field survey results and contents of'references. Examples of farmstead planning design were composite and concentrated type and existed according to the situation of road(North, South, East, and West).

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Development of the zip-up T-shirt design for men's outdoor clothing in summer (남성용 하절기 아웃도어 집업 티셔츠 디자인 개발)

  • Kim, Koh Woon;Kim, Yoon
    • The Research Journal of the Costume Culture
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    • v.28 no.1
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    • pp.131-145
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    • 2020
  • As the population of consumers of outdoor wear expands, there is increasing interest among consumers in trendy lifestyle outdoor. Accordingly, it is essential to develop designs that are drawn from outdoor wear. This can be limited to traditional mountaineering suits, and designs developed from men's outdoor zip-up T-shirts, which are highly utilized in everyday life, are very important. This study developed the design of a summer zip-up T-shirt for men with both functional and aesthetic qualities. Visual images of foreign brands and domestic outdoor-focused T-shirts from the spring/summer seasons of 2013-2019 were collected to analyze the following modeling elements: silhouettes, details, colors, materials, and prints. In addition, the design concept was derived by analyzing presentations from the global outdoor trade Fairs (2013-2019). To develop a sustainable eco-friendly outdoor summer T-shirt for men, the concept was derived according to three categories: eco-friendly, sportism-expressed active elements of sports, and an outro-concept of urban town wear as an outdoor lifestyle. Thus, a total of 12 styles of design were developed. High utilization of the outdoor wear T-shirts (which are also popular as lifestyle wear), is an important aspect of building a segmented lineup of the slow-growing outdoor wear market and supports expansion of the scope of theoretical research on outdoor wear design.

A Study on the Architectural Characteristics of the Mixed-use Buildings in the Residential Land Development District in country-side cities - Focused on Shin-Eum Housing district in Gimcheon - (중소도시 택지개발지구내 복합건축물의 건축적 특성에 관한 연구 - 김천시 신음택지지구를 중심으로 -)

  • Lee, Keun-Taek;Park, Kyoung-Hwan
    • Journal of the Korean housing association
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    • v.17 no.5
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    • pp.127-136
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    • 2006
  • The intent of this study is to propose future planning guidelines and directions of the mixed-use buildings in the residential land development district in country-side cities, based on the concept that the neighborhood facilities are to be strategically laid out in a convenient location and planned in a proper manner for a healthy, safe, friendly and new neighborhood environment. For this purpose, seventeen mixed-use buildings which had been built in Shin-Eum housing development district in Gimcheon from 1995 until 2004 were chosen and investigated in terms of architectural characteristics in that process with surveying and analyzing those. The scope of investigation on case studies was that site size would be below 400 square meters, total area below 1500 square meters, and the number of stories below five stories high on the ground. Method of investigation on those was through field investigation, field photographs, recordings and drawings on those. Investigative contents have been divided and analyzed into the quantitative and qualitative factors in urban and architectural dimension. From results of quantitative investigations, five planning guidelines or directions could be obtained. From results of qualitative investigations, five planning guidelines or directions could be obtained. The criteria will be applied to new architectural developments of the neighborhood facilities linked with the small shops.

Developing Standards for Measuring Consumption Style and Analysis of Characteristics (소비스타일 척도개발 및 특성분석)

  • Chang, Hyun-Sun;Kim, Kee-Ok
    • Journal of Families and Better Life
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    • v.27 no.2
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    • pp.11-28
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    • 2009
  • This study is intended to make a tool which can identify how consumers consume by presenting a concept of "consumption style" and by developing the scale to measure it. In order to study the scope and meaning of consumption for modern consumers, "the meaning of consumption" was theoretically considered. Based on it, the concept and perspective of 'consumption style'was formed and then the scale for measuring it was developed. To develop the scale, the scale was formed by extracting questions through a literature survey, and verifying validity through experts' opinion. Then, the final scale was developed by conducting a questionnaire survey for consumers. A preliminary 150- item scale was developed through a literature review. 1000 consumers responded to an online survey using the preliminary scale. This research was made with the intention of not only supplying the academic data on the consumer's "consumption style" but also understanding the consumer's basic behavior patterns. Then A series of tests, such as test-retest, item-to-total correlation, Cronbach's reliability coefficient and factor analysis, were conducted using the survey data. The final scale with 68-items was constructed in the end. The "consumption style" Scale for Consumers consisted of 4 factors.

Environmental Impact Evaluation for Glass Bottle Recycle using Life Cycle Assessment (LCA를 이용한 유리병 재활용의 환경영향 평가)

  • Baek, Seung-Hyuk;Kim, Hyung-Jin;Kwon, Young-Shik
    • Journal of Environmental Science International
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    • v.23 no.6
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    • pp.1067-1074
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    • 2014
  • Life Cycle Assessment(LCA) has been carried out to evaluate the environmental impacts of glass bottle recycle. The LCA consists of four stages such as Goal and Scope Definition, Life Cycle Inventory(LCI) Analysis, Life Cycle Impact Assessment(LCIA), and Interpretation. The LCI analysis showed that the major input materials were water, materials, sand, and crude oil, whereas the major output ones were wastewater, $CO_2$, and non-hazardous wastes. The LCIA was conducted for the six impact categories including 'Abiotic Resource Depletion', 'Acidification', 'Eutrophication', 'Global Warming', 'Ozone Depletion', and 'Photochemical Oxidant Creation'. As for Abiotic Resource Depletion, Acidification, and Photochemical Oxidant Creation, Bunker fuel oil C and LNG were major effects. As for Eutrophication, electricity and Bunker fuel oil C were major effects. As for Global Warming, electricity and LNG were major effects. As for Ozone Depletion, plate glasses were major effects. Among the six categories, the biggest impact potential was found to be Global Warming as 97% of total, but the rest could be negligible.