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Indicating the Problem of Shielding Design and the Way of Estimating Radiation Leakage for CT Rooms located through Survey of Radiation Leakage : in the case of Busan and Gyung-nam Area (방사선 누설선량 조사를 통한 방어시설과 누설선량 평가방법에 대한 문제점 연구 : 부산, 경남 지역 CT실을 중심으로)

  • Yang, Won Seok;Choi, Jun-Hyeok;Shin, Woon-Jae;Min, Byung-In
    • The Journal of the Korea Contents Association
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    • v.13 no.11
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    • pp.768-777
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    • 2013
  • The purpose of this study is to minimize radiation exposure to the workers and public members during CT examination. The objects are seven of the CT rooms in university hospitals and four of the CT rooms in clinics located in Busan and Gyung-nam area. The places of measurement for radiation leakage are 1) 3 m above the ground of shielding wall in the control room 2) particular space in the control room 3) worker's gate in the control room 4) the patient gate. Its values were calculated maximum leakage radiation per week(MLRW). As a result, the worker's gate of M clinic displayed the highest dose. When it was calculated by MLRW in classic method, it showed 1) $5.97{\pm}0.23$, 2) $0.50{\pm}0.02$, 3) $10.00{\pm}0.11$, 4) $2.37{\pm}0.47$ mR/week. All of them did not exceed limit for maximum permissible dose per week(MPDW). However, When MLRW of M clinic was calculated by empirical method, its value displayed $118.31{\pm}17.72$ mR/week.(MPDW>100 mR/week). Radiation leakage influenced in the control room(p<0.05). Therefore, The way of calculating MLRW must be developed and shielding wall in control room is designed 3 m above the ground for reducing dangerous of leakage radiation.

A Study on Characteristics of Medical Expenses and the Hospitalization Period of Hospitalized Patients Using Diem Payment System at Convalescent Hospitals (요양병원 일당정액제 입원환자의 입원일수 및 진료비 특성에 관한 연구)

  • Roh, Ock-Hee;Lee, Chong Hyung;Park, Arma;Kim, Kwang-Hwan
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.17 no.8
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    • pp.407-414
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    • 2016
  • This study was conducted to provide basic data to evaluate the appropriateness of convalescent hospitalization treatment by investigating the number of hospitalization days and the total treatment expenses of a total of 44,037 monthly billing statements requested from the Health Insurance Review and Assessment Service. Evaluated data consisted of medical care expenses of patients of the diem payment system hospitalized at convalescent hospitals in Daejeon, Chungnam, Chungbuk and Sejong from January through December of 2014. According to the analysis result of the general characteristics of the study objects and the canonical correlation analysis of the top 15 main diagnosis names, 7 canonical functions have been deducted. Among them, six canonical functions were shown to be statistically significant (p<0.001), and canonical function 1 had a chi-squared value of 5955.49 and 98 degrees of freedom at p<0.001 level. Overall, the results indicated that if health and welfare service in the regional society is magnified, social hospitalization can be reduced.

A Trend of Research Topics on University Libraries in Korea (한국에서의 대학도서관 연구동향)

  • Rhee, HeyYoung
    • Journal of the Korean Society for information Management
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    • v.32 no.2
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    • pp.153-165
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    • 2015
  • This study aims at a trend of research topics on university library. This study analyzed the contents of the study, under the theme of university library, published on four academic society journals, related to library and information science, from 2000 to 2014, such as Journal of the Korean Society for Library and Information, Journal of Korean Library and Information Science Society, Journal of the Korean Society for Information Management, and Journal of the Korean Biblia Society for Library and Information Science. As a result of investigation, of total 1,023 researches, the research on university library was performed (332 researches, 32.5%), next to the research on public library (418 researches, 40.9%) in frequency. The concernment themes of university library research were 'management of library' (95 researches, 28.6%), 'information science' (76 researches, 22.9%), 'library service' (31 researches, 9.3%) in order. Major research methods applied to university library research were questionnaire investigation (112 researches, 33.7%), case investigation (40 researches, 12.0%), interview investigation (50 researches, 15.1%), and other methods (132 researches, 39.8%) in order. The objects, classified with academic system, on university library research, were four year university library 244 researches (73.5%), two year university library (6 researches, 1.8%), and other university library (82 researches, 24.7%). The researcher dispersion was, in the case of one person research, professor (136 researches, 41%), librarian (35 researchers, 10.5%), and lecturer (14 researches, 4.2%) in order. In the case of group researches, the research dispersion was professor /librarian (53 researches, 16%), professor/graduate school student (27 researches, 8.1%), and professor/professor (19 researches, 5.7%) in order.

A Study on Activating Police Conversational Techniques - Focusing on activation of crisis negotiation techniques - (경찰 대화기법 활성화 방안에 관한 연구 - 위기협상기법의 활성화 방안을 중심으로 -)

  • Cho, Se-Hee
    • Korean Security Journal
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    • no.54
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    • pp.149-179
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    • 2018
  • October 31, 2017, a man named Saipov who follows ISIS killed 8 people and injured nearly 20 others by driving his truck to the riverside bicycle path in Manhattan, New York, in an act of terror. June 5, 2017, the Islamic extremist Yacqub Khayre held a woman hostage in a suburb of Melbourne, Australia, before being killed by the police. Various countries around the world including the UK, France, and Germany are in war against terrorism. The terrorists change their target from hard targets such as government officials to vulnerable soft target, intensifying the public's fear, and, unlike in the past when they were organized by governments or organizations, extremists such as ISIS followers are now acting on their own in the act of terrorism. Also, as they use vehicles, pressure cooker, and other objects that can be easily found for terrorism, it is becoming more difficult for the police to prepare against terrorist attacks. Meanwhile, some terrorism researchers argue that conversational techniques (negotiation) used by the police are now of no use, as shown in the cases like 9/11 attacks in 2001 and 2016 Nice attack in France in which the suspects committed terrorist attacks without leaving enough time for the police to take action and that, therefore, tactical suppression techniques need to be developed. Therefore, this study suggested police negotiation techniques are necessary not only for terrorist attacks but also for overall police work, including handling intoxicated people at police station, and proposed ways to activate conversational techniques for police organizations.

A Study on Industrial Accidents of Workers in Jeonbug Areas (전북지역(全北地域) 산업근로자(産業勤勞者)의 산업재해(産業災害)에 관(關)한 조사연구(調査硏究))

  • Hwang, In-Dam;Park, Young-Soo;Suh, Suk-Kwon
    • Journal of Preventive Medicine and Public Health
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    • v.14 no.1
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    • pp.89-96
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    • 1981
  • Of 2,740 industries in Jeonbug area which are covered by industrial insurance policy, 462 facilities which the accidents related to industry occured during the year of 1979 were studied. and the results are summarized as follows: 1. The accidents related to industry occured in 462 industries of the total 2,740 industrial facilities in Jeonbug area as of 1979. 2. The incidence rate of accident per 1,000 workers was 34.3 (49.2 in male workers and 12.8 in female workers), the frequency rate of the total industries in jeonbug area was 13.36, and severity rate was 1.3. 3. The frequency rates and severity rates by type of industry in study area were quite different to compare with those of national rates. 4. The incidence rate of construction industry was 223.6 per 1,000 workers, and that of transportation-communication industries were 78.6. 5. The proportion of industrial accidents of $20{\sim}24$ age group was 22.1 per cent of the total accidents, and the proportions decreased according to age increase. 6. The incidence rate in the industry having less than 49 workers was 20.6 per 1,000 workers, that of industry with $50{\sim]99$ workers was 26.7, that of industry with $100{\sim}199$ was 51.9, that of industry with $200{\sim}499$ was 80.2 and that of with more than 500 worker was 40.7. 7. The accidents which occured in the workers with experience of less than one year was 69.4 per cent of the total accidents, otherwise, the longer the workers have worked the less accident they have. 8. The most accidents occured in tile shift between 10 to 12 o'clock, and 16 to 18 hour 9. The primary causes of the industrial accidents were found to be collisions, machinery falling objects and falls. 10. The site of injury by type of industry were quite different, and the major site of injury was finger. 11. The laceration and open injuries of the accidents related to industry were 37.2 per cent of the total cases, and fractures or dislocations were 23.5 per cent, and contusions were 6.5 per cent. 12. Death rate of industrial accident was 5.0 per 10,000 workers, and those of industry were 47.6 in transportation, 42.8 in construction industry, 24.4 in mine industry, and 2.0 in manufacturing industry.

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An Interdisciplinary Approach for the Solution of Enviromental polution (環境汚染의 解決을 위한 綜合科學的 接近方法 (I))

  • Sin, Hyeon-Deok
    • Journal of the Korean institute of surface engineering
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    • v.12 no.3
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    • pp.207-216
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    • 1979
  • Environmental pollution or contaminations caused by various kinds of pollutants have become one of most serious problems of our time. Environ mental pollution is the unfavoralble alteration of our surroundings, through direct or indirect effects of changes in energy patterns, rediation levels, chemical and physical constitution and abundances of organisms. These changes may affect humans directly or through their supplies of water and of agicultural and other biological products, their physical objects or possessions, or their opportunities for recreation and appreciation of nature. Pollutants that meet the criteria of this definition of environmental pollution are numerous: gases (such as sulfur dioxide and nitrogen oxides) and paniculate matter (such as smoke particles, lead aerosols, and asbestos) in the atmosphere; pesticides and radioactive isotopes in the atmosphee and in waterways; sewage, organic. chemicals, and phosphates in water; solid wastes on land; excessive heating (thermal pollution) of rivers and lakes; and many others. Some of these pollutants are introduced into the environment naturally, others by human actions, and most in both ways. Our major concer is with environmental pollution resulting wholly or largely as a by-product of human activities, because these can be controlled most readily. Environmental pollution cannot be solved by science and technology alone. It should be handled by an interdisciplinary approach with combined methods of science and technology as wen as social science disciplines for the better solution of this critical problem. In this respect, introducing "Environmental Science," a new scientific approach for the solution of environmental problems, which is now widely accepted by most developed countries of the world will be very helpful for systematization of theoretical basis for a new scientific approach to environmental pollution. Environmental science is "the study of all systems of air, land, water, energy, and life that surround Man. It includes all sciences directed to the system-level of understanding of the environment, drawing especially upon such disciplines as meteorology, geophysics, oceanography, and ecology, and utilizing to the fullest knowledge and techniques developed in such fields as physics, chemistry, biology, mathematics and engineering as well as many social science disciplines, such as economics, such as economics, law, political science and public administration." The components of this discipline are not new, for they are drawn from existing areas of science within biology chemistry, physics, and geoscience. What is really new about environmental science, however, is it siewpoint - its orientation to global problems, its conception of the earth as a set of interlocking, interacting systems, and its interest in Man as a part of these systems.

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Characteristics of Male Diploma Nursing Students in Korea (전국 간호전문대학 남학생의 제특성에 관한 조사연구)

  • 김혜성
    • Journal of Korean Academy of Nursing
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    • v.9 no.2
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    • pp.63-72
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    • 1979
  • This study was performed to investigated of characteristics of male diploma nursing students. Data were collected by means of a mailed questionnaire. The sample included 29 respondents from 3 diploma nursing colleges during the period of Nov. 1st-15th, 1978. Major findings included. 1 ) Motive by which the objects of this investigation have chosen the science of nursing. Twenty-one (72.4%) responded, “As nursing occupation is a public welfare work, ”the highest rate, eighteen (62.3%) chose on advices of their parents and acquaintances. Seventeen (58.6%) reflected as a means of life with an occupation in hope of employment abroad. 2) Appreciation of nursing occupation. Twenty-two (75.9%) of opinions that the nursing job is called for by society was pre-dominent. While eighteen (62.1%) replied, “It is the job fit for the male sex, too.”“It is admitted as specialized occupation.”, or“It needs various human relation.”3) Degree of satisfaction wilt the science of nursing. Fifteen (51.7%) responded neither satisfied nor dissatisfied, while eight (27.6%) indicated as “satisfied”and four (13.8%) as“dissatisfied.”4) Degree of satisfaction with the faculty. Sixteen (55.2%) replied, “common, ”the highest, while ten (34.5%) indicated as“dissatisfied, ”two (6.9%) as“satisfied.”The reason for dissatisfaction with the faculty; The responses regarding dissatisfaction was twenty-three (79.3%) as insufficiency of the faculty. Thirteen (44.8%) indicated“the lack of personal cultivation of the faculty.”, And eleven (37.9%) indicated as“the quantitive shortage of the faculty, ”or“the vagueness of learning estimation.”5) Degree of satisfaction with the clinical, training. Eight (27.6%) responded as“common, ”or “dissatisfied, ”while seven (24.1%) indicated as“satisfied.”Reason for dissatisfaction with the training ; Twenty (69.0%) indicated“deficiency of personal treatment to the students of the men of business in the hospital”with respect to the reason, eighteen (62.1%) was indicated as gap between theory and practice, while eleven (37.9%) indicated“insufficiency of the equipment and materials of the hospital.”6) Interest in employment after graduation. Twenty-five (86.2%) indicated“going abroad”while fifteen (51.7%) indicated “education of nursing, ”which were the highest responses. Thirteen (44.8%) chose“Community Health Nursing (Health Center, Industrial Health).”7) Interest an employment during clinical nursing. Sixteen (55.2%) was interested in an operating room or the department of anesthesia, while fifteen (51.7%) was indicated “psychiatry, ”Eight (21.6%) chose a intensive care unit or a emergency room.

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A Study on the Child Care Providers' Perception on the Seoul-Type Child Care Accreditation System (서울형 어린이집 공인인증에 대한 보육시설 종사자의 인식연구)

  • Kim, Young Ok;Choi, Inhwa
    • Korean Journal of Childcare and Education
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    • v.7 no.2
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    • pp.181-203
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    • 2011
  • The purposes of this study were to examine the perception of directors and child care providers regarding the Seoul-type Child Care Accreditation and its operating system. The objects were 309 directors and child care providers at accredited Seoul-type child care centers. The collected data was analyzed using frequency, percentiles, and ${\chi}^2$. The results are as follows: First, the majority of directors and child care providers perceived 'the preparation for effective quality control of child-care service' as the primary purpose of the Seoul-type Child Care Accreditation. Many of them responded that the child care centers meeting the purpose of accreditation would be 'private' and 'home-based' ones. Seoul-type Child Care Accreditation was easier to pass compared to National Child Care Accreditation. The directors and child care providers perceived that the accreditation will narrow the gap between public and private child care centers. Second, in operating customized child-care service, most directors preferred 'submits only the same plan as that of a designated one', but most child care providers preferred 'assessment after providing customized child-care'. For the reliable child-care service and accounting management system, both subject groups showed general satisfaction with 'current system'. Third, both subject groups responded that 'overtime pay for child care providers' and 'government's consistent child-care policy' were what they desire most to improve Seoul-type Child Care Accreditation.

The Effect of High School Earth Science Instruction Using Mind Map (마인드 맵을 활용한 고등학교 지구과학 수업의 효과)

  • Kim, Sang-Dal;Kim, Eun-Jung;Ju, Cook-Young;Choi, Sung-Bong;Hong, Dong-Gyoon
    • Journal of the Korean earth science society
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    • v.29 no.7
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    • pp.617-625
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    • 2008
  • The purpose of this study was to identify the effect that using mind map instruction has on the students' scientific inquiry skill and science-related attitudes in 11th grade in the earth science instruction. The objects of this study were consisted of two classes with 11th graders at K public high school in Kimhea city. The experimental group using mind map was lessoned 2 hours a week for 10 weeks. On the other hand, the controlled group was traditionally taught. Each group was consisted of 34 students. Student's science inquiry skills and science-related attitudes were assessed in pre-test, and then each group was instructed. The post-test was conducted after the instruction. Findings were as follows: First, As for the scientific inquiry skill, the result revealed that there was a statistically significant difference between the two groups. This finding means that the mind map instruction was more effectiveto improve students' scientific inquiry skills. Second, Regarding the science-related attitudes, the t-test analysis showed that there was a statistically significant difference between the two groups. This result implies that the mind map instruction was more effective in promoting students' attitudes toward science. In conclusion, the earth science instruction using mind map showed more effectiveness on the high school students' improvement of their science inquiry skills and science-related attitudes.

Object Classification List for BIM-based Maintenance Information Modeling in Electrical and Telecommunications Field of Architecture (BIM 기반 유지관리정보 모델링을 위한 객체분류목록 개발 -건축 전기/정보통신 분야를 중심으로-)

  • Song, Jong-Kwan;Cho, Gen-Ha;Won, Ji-Sun;Ju, Ki-Beom;Bea, Si-Hwa
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.15 no.5
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    • pp.3183-3191
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    • 2014
  • It is essential to effectively manage facilities because operating and maintenance cost for them accounts for more than 83% of lifecycle cost. This study developed BIM Object-based classification list to manage information required to operating and maintenance phase of them from design and construction phase. In order to develop this classification list, Construction Information Classification System, Design Criteria for Architectural Electrical Installations, commodity list classification of PPS(Public Procurement Service) were analyzed. and problems for consisting of object classification list were drawn. And each materials is classified that drawings discipline code (KSF 1540:2010 (Principle and criteria for CAD Drawing) was classified as level 1 to cover main areas and construction information classification system was classified as level 2 to cover elements also UNSPSC was classified as level 3 to cover objects for devices and equipments. this classification criteria was given code. This study is expected to be useful to exchange and share information in operating and maintenance phase by offering object point of view classification in design and construction phase. besides, it is looking forward to effective operating and maintenance of facilities by enabling management of devices and equipments by function, space, use.