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Analysis of Loss of HVAC for Nuclear Power Plant (원전의 공기조화설비(HVAC) 상실사고 분석방법)

  • Song, Dong-Soo
    • Journal of Energy Engineering
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    • v.23 no.1
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    • pp.90-94
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    • 2014
  • Environmental qualification (EQ) for safety-related equipment is required to ensure that those equipment will perform their required function even under the harsh environment conditions arising from design basis accident in the nuclear power plant. As a part of EQ program, the room temperature analysis in case of a loss of Heating, Ventilation, and Air Conditioning(HVAC) system was carried out to ensure the operability of the safety-related equipment of a nuclear power plant randomly chosen among the Korean nuclear power plants. In this paper, this analysis was performed in the conservative perspective using GOTHIC code. The room temperature analysis includes selecting the rooms in which the safety related equipment are located but not supported by safety related HVAC and determining the temperature of the selected rooms. Target rooms for the analysis consist of W229/W237 (Aux. feedwater pump room), W232 (Aux. feedwater tank room) and W230 (Equipment passageway). The results showed the temperature range from $43^{\circ}C$ to $83^{\circ}C$, in 72 hours after a loss of HVAC. Those values are far below of generic EQ temperature($171^{\circ}C$). Therefore, it is satisfied with EQ requirement of temperature limits on safety related equipment.

Measurement of picosecond laser pulsewidth and pulseshape by two-photon fluorescence and noncolloinear type I second harmonic generation method (이광자 형광법과 비공선 일종 이차고조파법에 의한 피코초 레이저 펄스폭과 펄스형 측정)

  • 한기호;박종락;이재용;김현수;엄기영;변재오;공흥진
    • Korean Journal of Optics and Photonics
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    • v.7 no.3
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    • pp.251-259
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    • 1996
  • Two-Photon Fluorescence (TPF) experiment measures temporal width of an amplified short laser pulse which has passed through a four-pass Nd: glass amplifier, after selecting a single pulse from pulse train Q-switched and mode-locked(QSML) in Nd:YLF master oscillator. Determination of pulsewidth and pulseshape was also made with detection of autocorrelation trace of CW mode-locked pulse train by using noncollinear type I Second Harmonic Generation (SHG) method. The observed TPF track showed various patterns, depending on pulse-selecting position in QSML pulse train. That is, autocorrelation of a pulse extracted at front of the train displayed smooth pulse shape, while one from the trailing part of the train created many sharp spikes and substructure in the pulse. By TPF method, pulsewidth was measured to be 44.4 ps with contrast ratio of 2.86 which enabled us to find out energy fraction of a pulse to total energy, (sum of pulse and background); we obtain the value of 0.62. Pulsewidth of 46.6ps was also acquired in another SHG experiment with the help of only mode-locked pulse train. On the other hand, we confirmed that shape of the pulse is close to $sech^2$ one as a result of fitting the SHG autocorrelation signal with various functions. With simulation using this $sech^2$ type of pulse, pulsewidth reduction of the beam, having passed through four-pass amplifier, was also verified.

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Usefulness of Meyerhold's 'Biomechanics' as an Alternative for a Method of Actor Training II - Focused on the Actual Training Program of 'Biomechanics' (배우 훈련 방법의 대안으로서 메이어홀드 '인체역학'의 효용성 II - '인체역학'의 실제 훈련 프로그램을 중심으로)

  • Cho, Han-Jun
    • The Journal of the Korea Contents Association
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    • v.14 no.11
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    • pp.89-101
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    • 2014
  • The 'Biomechanics', which was devised to systematically train actor's material and medium, is evaluated as the first approach to an acting method in earnest with Stanislavsky's 'System'. Especially, due to the psycho-physical features of 'Biomechanics' that helps an actor to master a mechanism of human being such as stimulus, impulse and reaction, it was valued as an alternative for a naturalistic acting method that was excessively focused on the actor's emotional expression. However, the 'Biomechanics' is not utilized with activity in a field of actor training in Korea compared with Stanislavsky's 'The Method of Physical Action' which has a similar starting point as the psycho-physical feature. It is because of a political reason that a study for Meyerhold was officially forbidden in Russia until the mid-twentieth century. It is also because of a limit that incorporeal features of the 'Biomechanics' could not but be explained only by publications, especially translation. In this sense, as part of seeking for a new alternative of acting methods in Korea, this study will explore a possibility of applying the 'Biomechanics' to the actual actor training field through correct understanding of it.

Development of Curriculum for the Emergency Clinical Nurse Specialist (응급전문간호사의 교육과정안 개발)

  • 김광주;이향련;김귀분
    • Journal of Korean Academy of Nursing
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    • v.26 no.1
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    • pp.194-222
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    • 1996
  • Various accidents and injuries are currently occurring in Korea at increasingly high rates. Good quality emergency care service is urgently needed to cope with these various forms of accidents and injuries. In order to develop a sound emergency care system, there need to be a plan to educate and train professionals specifically in emergency care. One solution for the on going problem would be to educate and train emergency clinical nurse specialists. This study on a strategy for curriculum development for emergency clinical nurse specialist was based on the following five content areas, developed from literature related to the curriculum of emergency nursing and emergency care situation : 1. Nurses working in the emergency rooms of three university hospitals were analyzed for six days to identify categories of nursing activities. 2. Two hundreds and eleven nurses working in the emergency rooms of 12 university hospitals were surveyed to identify needs for educational content that should be included in a curriculum for the clinical nurse specialist. 3. Examination of the environment in which emergency management was provided. 4. Identification of characteristics of patients in the emergency room. 5. The role of emergency clinical nurse specialist was identified through literature, recent data, and research materials. The following curriculum was formulated using the above mentioned process. 1. The philosophy of education for emergency clinical nurse specialist was established through a realistic philosophical framework. In this frame, client, environment, health, nursing, and learning have been defined. 2. The purpose of education is framed on individual development, social structure, nursing process and responsibility along with the role and function of the emergency clinical nurse specialist. 3. The central theme was based on human, environment, health and nursing. 4. The elements of structure in the curriculum content were divided to include two major threads, I, e., vertical and horizontal : The vertical thread to consist of the client, life cycle, education, research, leadership and consultation, and the horizontal thread to consist of level of nursing (prevention to rehabilitation), and health to illness based on the health care system developed by Betty Neuman system model. 5. Behavioral objectives for education were structured according to the emergency clinical nurse specialist role and function as a master degree prepared in various emergency settings. 6. The content of the curriculum consisted of three core courses(9 credits), five major courses(15 credits), six elective courses(12 credits) and six prerequisite courses (12 credits). Thus 48 credits are required. Recommendations : 1. To promote tile quality of the emergency care system, the number of emergency professionals, has to be expanded. Further the role and function of the emergency clinical nurse specialist needs to be specified in both the medical law and the Nursing Practice Act. 2. In order to upgrade the qualification of emergency clinical nurse specialists, the course should be given as part of the graduate Program. 3. Certification should be issued through the Korean Nurses Association.

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A Study on the Activity and its Influence of Pioneer Missionary in Korea Protestant Mission Architecture -(1) Focused on the Architectural Activities of Graham Lee- (한국미션건축에 있어서 개신교 개척선교사의 활동과 영향에 관한 연구 -(1) 그래함 리(Graham Lee)의 건축활동을 중심으로-)

  • Chung, Chang-Won
    • Journal of architectural history
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    • v.13 no.2 s.38
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    • pp.57-70
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    • 2004
  • Since Korea disclaimed to open the ports, Korean architecture has met the impetuous transformation. Although there would be various factors of this transformation, the new-coming architecture by missionary seemed to be a significant one, and many researches have been carried out on this theme in diverse viewpoints. However, because these researches have preponderated on the Catholic tradition, it is deficient for clarify the whole history of mission architecture. Therefore, this research has the meaning to enrich the history of Korean modern architecture by making balance. First of all, this paper is focused on the activities of one missionary, Graham Lee. He is a practical missionary at the beginning, his architecture made a critical influence in Korean traditional architecture. Graham Lee was born in Rock Island, Illinois, 1861, and he determined to become a missionary through grown up. He spent his boyhood by working as a plumber for his purpose and studied in a university afterward. Graduating of McComick Theological Seminary, he was nominated as a pioneer of Pyeng Yang Mission Station and set foot in Korea, September of 1892. Since then he started to erect missionary facilities in Pyeng Yang, such as Well House(1898), Pyeng Yang Central Church(1900-1901), Pyeng Yang Academy(1902). These all his works are designed with eclectic style which shows western and Korean traditional style intermingled. This unique characteristic made a profound influence to the Korean mission architecture afterwards. Especially, the L-type plan of Pyeng Yang Central Church, which is first shown by him, is recognized very unique, and this plan type had been spread all over the country. Therefore the L-type plan became the peculiar feature of the early Korean churches. Furthermore, working with Korean carpenters, he taught them new skills of modem buildings. After that, they were expanded out northern part of Korea and took the roles of master builders. According to this expansion, his particular style had got spread and had been settled as a unique eclectic style in Korean modern architecture. In the conclusion, he is evaluated to be a critical pioneer missionary, who left a big influence on the frame work of Korean modern architecture in the transitional times.

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The Significance of Independence Park in Korean Landscape Architectural History (독립공원의 조경사적 의의)

  • Lee, Yoo-Jick
    • Journal of the Korean Institute of Landscape Architecture
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    • v.36 no.1
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    • pp.103-115
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    • 2008
  • This paper investigates the historical significance of Independence Park in Korean landscape architecture by examining the idea and goal, master plan and scheme, and meaning and limitation of the park The construction was announced in July and began with the Independence Arch in the middle of September, 1896. Dr. Philip Jaisohn (Suh Jai-Pil), Counselor of The Privy Office and president of the Independence newspaper, played an important role in park construction. He formally advised the arrangements and general planning of the park, but he actually played a leading role in the park as much as he designed and superintended the erection of the arch. He had the conception of a productive park for cultivating and experimenting with a variety of trees surrounding the monument. In terms of the history of Korean landscape architecture, Independence Park is important in that it is the first modem city park that was tried independently as part of the modernizing-Seoul project and the only park of which object and scheme were revealed. It also strengthens the roots of Korean modem landscape architecture by pushing Korean history of public parks into the prior time to Japanese colonial period and enriches the contents of Korean modem landscape architecture. Independence Park is the original realization of a public park because it was constructed with participation and donations from the planning stage to the construction and use. In addition, it is the goal and means to inspire the spirit of national independence and patriotism in Korean people and lead them to voluntary awakening, enlightenment, and participation. Independence Park, however, was not constructed according to Dr. Jaisohn's original intent due to the lack of funds and the rudimentary level of landscape construction technology. In addition, the location was too far from downtown and accessibility was very difficult. For these reasons, many do not consider the park as having been constructed. However, this kind of view must be changed. Other parks of the time were not detailed and decorated like typical western parks, but were left as public spaces. In other words, these parks should not be judged by comparing them to western parks. This is the same concept as that of the first parks of modem Korea being called 'park land.' These parks were more natural environments than planned gardens.

A Study on Introduction of Accreditation Program for Industrial Hygiene Laboratories in Korea (국내 작업환경측정기관 인정제도 도입을 위한 현황 조사 연구)

  • Park, Deok Mook;Park, Jeonglm;Shin, Yong Chul;Cha, Jeong Young;Jeong, Jee Yeon;Kim, Boo Wook;Paik, Nam Won
    • Journal of Korean Society of Occupational and Environmental Hygiene
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    • v.15 no.3
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    • pp.232-238
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    • 2005
  • There are growing needs for improving the general performances of the domestic working environment evaluation organizations. For this purpose, introduction of laboratory accreditation program has been suggested. This study was conducted as a part of this effort. With a questionnaire developed in accordance with the ISO/IEC 17025, the current status of industrial hygiene (IH) laboratories in terms of manpower, management and technical aspects. The results of this study were as follows: 1. The average working staffs' number of the working environment evaluation organizations was $6.8{\pm}3.3$ persons. In addition, 49% of all organizations are run by less than 5 persons. This suggests that manpower of Korean IH laboratories is very limited. 2. IH laboratories surveyed in this study obtained 53% of the points by the international standard. And there is significant correlation between the number of staffing and total scores (P<0.05). 3. The period of work experience is one of the most important factors to determine the working capability. The average year of work experience of the laboratories' directors was $13.5{\pm}5.3$ years. Directors with more wok experiences obtained higher scores on the questions that ask to prove the appropriateness of the research methodology (p<0.05). 4. As for academic qualifications of laboratory directors, 14% had Ph.D., 31% with Master's, 29% with Bachelor's, and 4% had Associate degree. There was significant correlation between the total scores and the general managers' academic background (p<0.05). The 27% of laboratory directors have majored in either industrial hygiene or health, 8% majored in medicine, another 8% majored environmental studies, and 6% majored in chemistry. 5. Only 14% of all IH laboratories surveyed employ directors with Certified Industrial Hygienist licence, 41% have general managers with Certified Associate Industrial Hygienist (Level 1) licence, and 45% of all laboratories either employ directors without relevant qualification or did not respond. When the laboratory manger holds relevant qualification, laboratory health and safety management was better (p<0.05). 6. When compared to the general international standard in terms of the management, and 55% in terms of technological level.

A Study of the Munheongak and Munheongaksomog (문헌각과 문헌각서목의 분석 -숙종조의 문화적 배경을통한 한국본 서고의 연구-)

  • Nam Kwon-Heui
    • Journal of the Korean Society for Library and Information Science
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    • v.11
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    • pp.147-183
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    • 1984
  • This is an analytical study on Munheongak (文獻閣) and it's catalogue. The major objective of the study is to get a recognition of Munheongak under the culture of Sukjong (肅宗) period in Korean library history. Most of early studies made on such a category have been concentrated on Jiphyunjeon (集賢殿), Hongmungwan (弘文館), Kyujanggak(奎章閣) and their backgrounds. In this study, the author has invest gated Kungwolji (宮闕志), Munheongakseomg (文獻閣書目) and other materials related to this subject. The findings of the study can be summarized as follows: 1. Munheongak was established by king Sukjong in the 26th year of his reign. According to some records of Kungkwolji, the reason of establishment of the library was to arrange the collection in the Sango (相庫) consisted of various kinds of materials. In case of books, most of them turned out to be Korean books. 2. Munheongak was sited to the estern side of Kyunghyundang (景賢堂), which was located on the Kyungdeokgung (慶德宮). After Youngjo (英祖) the place was called Kyungheuigung (慶熙宮) so as to avoid the name of the precedent king. But these days, both the buildings are not to be found. 3. After its establishment, the library could not play the role as a library because of the then political situation and sectionalism. During the period of the revival of the learning from Youngjo till Jeongjo(正祖) the function of the library was in a stagnant state. Kyujanggak played the part in its place. 4. Referring to the collection management, the Munheongakseomog is equipped with 101 titles, 2,525 volumes, which are arranged by means of the traditional Chinese classification system. 5. The classification scheme is based on the traditional Chinese classification system which might divide all subjects into four categories such as: Confucian classics division, Historical documents division, Master's division, and Collection of literature division. Some illustrations reveal that the classification system was directly influenced by Seogoseomg (書庫書目) : the influence reflected in the classes for the translated literature and writings, poems, genealogy about kings, etc. But some subdivisions such as a class of Annals, Historical Epcerpts were omitted in the classification scheme, which did not strike the balance in the system in terms of the present theory of classification. Most of bibliographical descriptions were also influenced by Seogoseomog but some elements were partly omitted. 6. The special feature of the collection building is the absence of books in Collection of literature division except only three kinds of books in examining the Munheongakseomog. Since this is rather a comprehensive study for such aspects as historical backround, catalogue, and cultural environment of Munheongak and its related record, it is advised that further and additional research should be made.

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Exploring the Image Types of Secondary School Students' Perception about the Talented Person in Convergence (중등학생들이 생각하는 융합인재에 대한 이미지 유형 탐색)

  • Lee, Jun-Ki;Lee, Tae-Kyong;Shin, Sein;Chung, Duk-Ho;Oh, Sang-Wook
    • Journal of The Korean Association For Science Education
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    • v.33 no.7
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    • pp.1486-1509
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    • 2013
  • This study aims to identify the image types of secondary school students' perception about the talented person in convergence and to find the differences in drawing images of the talented person in convergence among the students who have taken STEAM class and the ones who haven't. One hundred and eighty seven students in middle and high schools located in the southern part of South Korea participated in this study and they were asked to draw a picture of the talented person in convergence with a brief explanation. Based on students' pictures, researchers categorized their perception about convergence and talented person in convergence by using an inductive method. The result indicated that secondary school students' perceptions were categorized into convergence as individual cognitive processing and collective cognitive processing and convergence as outcomes. The image of the convergence in a talented person leaning toward individual cognitive processing was divided into the following seven types: idea banker type, various talented celebrity type, multi-tasking master type, multi-talented career type, active problem-solver type, creative developer type, and unrealistic ideal man type. Another image of collective cognitive processing was split into expert group type and interactive-mates group type. The other image was transformer type which is the subcategory of convergence as outcomes. From this study, it can be suggested that secondary school students express the various images of the talented person in convergence depending on experiencing STEAM or not.

Recent Home Networking Services Development and Future Directions: Case analysis of Korean Smart Apartment Complexes (홈네트워킹 서비스 현황 및 발전 방향: 국내 사이버 타운 사례분석)

  • Sawng, Yeong-Wha;Han, Hyun-Soo
    • Information Systems Review
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    • v.6 no.2
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    • pp.269-284
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    • 2004
  • Induced from government policy to boost regional economic competitiveness, regional informatization forming e-community has been the subject included in the various regional informatization master plans in Korea. However, few cases are reported for its successful implementation mainly due to the lack of profitable business model to encourage investment. On the other hand, most efforts to build smart apartments, part of the home networking in a broad sense, has been pursued from the different directions. Telecommunication giant such as Korea Telecom tries to find new source of revenue exploiting enhanced broad band technology. Also, construction companies started constructing housing complexes equipped with built-in high speed network infrastructure as a means to differentiation to other competitors. The contents providing community portal has become mandatory in the sense of bearing the cost from customer side who are willing to adopt those services for new smart house. Our research motivation stems from exploring critical value aspects of realizing the profitability of this emerging new business model, that is, industry convergence model. In this paper, mainly from the survey results of the Korean smart apartment complexes, we reported recent home networking services development in Korea, and value propositions from the business model perspective. Merged business model components of telecommunications, construction, and internet contents are analyzed to provide the insights for future directions.