• 제목/요약/키워드: control networks

검색결과 4,026건 처리시간 0.033초

텍스트 마이닝과 네트워크 이론을 활용한 권역별 국가하천 점용허가 키워드 분석 (Analysis of Keywords in national river occupancy permits by region using text mining and network theory)

  • 정성윤
    • 스마트미디어저널
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    • 제12권11호
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    • pp.185-197
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    • 2023
  • 점용허가 정보를 기록하는 단순 용도로만 사용되고 있는 허가 대장에서 허가 내용에 내재한 점용 신청과 허가업무 수행에 유용한 정보를 추출하기 위해 텍스트 마이닝과 네트워크 이론을 활용하여 본 연구를 진행하였다. 텍스트 마이닝 기반으로 불용어 제거와 형태소 분석 등 정규화 과정을 비롯하여 서울·경기, 경상, 전라, 충청, 강원 등 5개 권역별로 어휘 출현 빈도와 토픽 모델링을 분석, 비교하였다. 네트워크 이론에 가정 많이 사용되는 단계, 근접, 매개 및 고유벡터 등 4종의 중심성 알고리즘을 적용하여 네트워크에서 중심적인 위치에 있거나 중간 매개체 역할을 하는 키워드를 살펴보았다. 이러한 어휘 출현 빈도, 토픽 모델링 및 네트워크 중심성을 종합적으로 분석하여 모든 권역에서 '설치' 키워드가 가장 영향력이 큰 것을 알 수 있었다. 이는 환경부의 허가관리청에서는 시설물을 건설하거나 공작물을 설치하는 허가가 많아서 나타난 결과라고 판단된다. 또한, 도로 시설, 치수 시설, 지하 매설 시설, 전력·통신 시설, 체육·공원 시설 등과 연관된 키워드가 토픽 모델링과 네트워크에서 중심적 위치에 있거나 중간 매개체의 역할을 하는 것을 알 수 있었다. 키워드 대부분은 출현 빈도와 분포 비율이 낮은 짚프의 원칙(Zipf' Law)의 통계분포 형태를 보이는 것으로 보였다.

지하 터널 건설을 위한 굴착 시 지하수 유동 분석 (Groundwater Flow Analysis During Excavation for Underground Tunnel Construction)

  • 이성열;백원진;김진영;정창성;강재모
    • 한국지반환경공학회 논문집
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    • 제25권6호
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    • pp.19-24
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    • 2024
  • 도심지의 인구 밀집화로 인해 인구의 분산 및 이동을 위해 지하철도 및 지하 터널의 개발과 같은 지하공간에 대한 개발이 이루어지고 있다. 지하공간을 개발하기 위해서는 지반 상부로부터 굴착이 진행되어야 하며, 굴착 시 주변 지하수 유동이 발생할 수 있다. 지하수의 유동은 지반의 침하 및 함몰을 야기하여 구조물의 손상을 발생시킬 수 있다. 따라서 시공 전 지하수 유동을 모델링하여 지하수 유동 특성을 분석하고 굴착 시 발생하는 지하수 유출을 예측하여 대비해야 한다. 본 연구에서는 지하터널 건설을 위한 굴착공사가 이루어지는 ○○시를 대상으로 기상 및 지형, 지반 조건 등을 수집하여 Visual MODFLOW 프로그램을 통해 지하수 유동을 모델링하였다. 또한, 모델을 통해 굴착구간을 배수 지점으로 설정하여 굴착 공정에 따른 지하수 유출을 확인하였으며, 차수 조건에 따른 지하수 유출 감소 효과를 확인하였다. 실측 지하수위와 모델의 지하수위를 비교하여 모델을 검증한 결과, 0.87의 결정계수가 도출되었으며, 해당 모델을 통해 대상지역 굴착 공정에 따른 지하수 유동을 비교하였다. 그 결과, 굴착 초기에 지하수 유출이 가장 많이 발생하는 것으로 나타났다. 또한, 차수 유무에 따른 지하수 유출 저감 효과를 확인한 결과, 차수 구조물 설치 시 약 59%의 지하수 유출 저감 효과를 보이는 것으로 나타났다.

Automatic Detection and Classification of Rib Fractures on Thoracic CT Using Convolutional Neural Network: Accuracy and Feasibility

  • Qing-Qing Zhou;Jiashuo Wang;Wen Tang;Zhang-Chun Hu;Zi-Yi Xia;Xue-Song Li;Rongguo Zhang;Xindao Yin;Bing Zhang;Hong Zhang
    • Korean Journal of Radiology
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    • 제21권7호
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    • pp.869-879
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    • 2020
  • Objective: To evaluate the performance of a convolutional neural network (CNN) model that can automatically detect and classify rib fractures, and output structured reports from computed tomography (CT) images. Materials and Methods: This study included 1079 patients (median age, 55 years; men, 718) from three hospitals, between January 2011 and January 2019, who were divided into a monocentric training set (n = 876; median age, 55 years; men, 582), five multicenter/multiparameter validation sets (n = 173; median age, 59 years; men, 118) with different slice thicknesses and image pixels, and a normal control set (n = 30; median age, 53 years; men, 18). Three classifications (fresh, healing, and old fracture) combined with fracture location (corresponding CT layers) were detected automatically and delivered in a structured report. Precision, recall, and F1-score were selected as metrics to measure the optimum CNN model. Detection/diagnosis time, precision, and sensitivity were employed to compare the diagnostic efficiency of the structured report and that of experienced radiologists. Results: A total of 25054 annotations (fresh fracture, 10089; healing fracture, 10922; old fracture, 4043) were labelled for training (18584) and validation (6470). The detection efficiency was higher for fresh fractures and healing fractures than for old fractures (F1-scores, 0.849, 0.856, 0.770, respectively, p = 0.023 for each), and the robustness of the model was good in the five multicenter/multiparameter validation sets (all mean F1-scores > 0.8 except validation set 5 [512 x 512 pixels; F1-score = 0.757]). The precision of the five radiologists improved from 80.3% to 91.1%, and the sensitivity increased from 62.4% to 86.3% with artificial intelligence-assisted diagnosis. On average, the diagnosis time of the radiologists was reduced by 73.9 seconds. Conclusion: Our CNN model for automatic rib fracture detection could assist radiologists in improving diagnostic efficiency, reducing diagnosis time and radiologists' workload.

가족계획과 모자보건 통합을 위한 조산원의 투입효과 분석 -서산지역의 개입연구 평가보고- (An Intervention Study on Integration of Family Planning and Maternal/Infant Care Services in Rural Korea)

  • 방숙;한성현;이정자;안문영;이인숙;김은실;김종호
    • Journal of Preventive Medicine and Public Health
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    • 제20권1호
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    • pp.165-203
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    • 1987
  • This project was a service-cum-research effort with a quasi-experimental study design to examine the health benefits of an integrated Family Planning (FP)/Maternal & Child health (MCH) Service approach that provides crucial factors missing in the present on-going programs. The specific objectives were: 1) To test the effectiveness of trained nurse/midwives (MW) assigned as change agents in the Health Sub-Center (HSC) to bring about the changes in the eight FP/MCH indicators, namely; (i)FP/MCH contacts between field workers and their clients (ii) the use of effective FP methods, (iii) the inter-birth interval and/or open interval, (iv) prenatal care by medically qualified personnel, (v) medically supervised deliveries, (vi) the rate of induced abortion, (vii) maternal and infant morbidity, and (viii) preinatal & infant mortality. 2) To measure the integrative linkage (contacts) between MW & HSC workers and between HSC and clients. 3) To examine the organizational or administrative factors influencing integrative linkage between health workers. Study design; The above objectives called for quasi-experimental design setting up a study and control area with and without a midwife. An active intervention program (FP/MCH minimum 'package' program) was conducted for a 2 year period from June 1982-July 1984 in Seosan County and 'before and after' surveys were conducted to measure the change. Service input; This study was undertaken by the Soonchunhyang University in collaboration with WHO. After a baseline survery in 1981, trained nurses/midwives were introduced into two health sub-centers in a rural setting (Seosan county) for a 2 year period from 1982 to 1984. A major service input was the establishment of midwifery services in the existing health delivery system with emphasis on nurse/midwife's role as the link between health workers (nurse aids) and village health workers, and the referral of risk patients to the private physician (OBGY specialist). An evaluation survey was made in August 1984 to assess the effectiveness of this alternative integrated approach in the study areas in comparison with the control area which had normal government services. Method of evaluation; a. In this study, the primary objective was first to examine to what extent the FP/MCH package program brought about changes in the pre-determined eight indicators (outcome and impact measures) and the following relationship was first analyzed; b. Nevertheless, this project did not automatically accept the assumption that if two or more activities were integrated, the results would automatically be better than a non-integrated or categorical program. There is a need to assess the 'integration process' itself within the package program. The process of integration was measured in terms of interactive linkages, or the quantity & quality of contacts between workers & clients and among workers. Intergrative linkages were hypothesized to be influenced by organizational factors at the HSC clinic level including HSC goals, sltrurture, authority, leadership style, resources, and personal characteristics of HSC staff. The extent or degree of integration, as measured by the intensity of integrative linkages, was in turn presumed to influence programme performance. Thus as indicated diagrammatically below, organizational factors constituted the independent variables, integration as the intervening variable and programme performance with respect to family planning and health services as the dependent variable: Concerning organizational factors, however, due to the limited number of HSCs (2 in the study area and 3 in the control area), they were studied by participatory observation of an anthropologist who was independent of the project. In this observation, we examined whether the assumed integration process actually occurred or not. If not, what were the constraints in producing an effective integration process. Summary of Findings; A) Program effects and impact 1. Effects on FP use: During this 2 year action period, FP acceptance increased from 58% in 1981 to 78% in 1984 in both the study and control areas. This increase in both areas was mainly due to the new family planning campaign driven by the Government for the same study period. Therefore, there was no increment of FP acceptance rate due to additional input of MW to the on-going FP program. But in the study area, quality aspects of FP were somewhat improved, having a better continuation rate of IUDs & pills and more use of effective Contraceptive methods in comparison with the control area. 2. Effects of use of MCH services: Between the study and control areas, however, there was a significant difference in maternal and child health care. For example, the coverage of prenatal care was increased from 53% for 1981 birth cohort to 75% for 1984 birth cohort in the study area. In the control area, the same increased from 41% (1981) to 65% (1984). It is noteworthy that almost two thirds of the recent birth cohort received prenatal care even in the control area, indicating that there is a growing demand of MCH care as the size of family norm becomes smaller 3. There has been a substantive increase in delivery care by medical professions in the study area, with an annual increase rate of 10% due to midwives input in the study areas. The project had about two times greater effect on postnatal care (68% vs. 33%) at delivery care(45.2% vs. 26.1%). 4. The study area had better reproductive efficiency (wanted pregancies with FP practice & healthy live births survived by one year old) than the control area, especially among women under 30 (14.1% vs. 9.6%). The proportion of women who preferred the 1st trimester for their first prenatal care rose significantly in the study area as compared to the control area (24% vs 13%). B) Effects on Interactive Linkage 1. This project made a contribution in making several useful steps in the direction of service integration, namely; i) The health workers have become familiar with procedures on how to work together with each other (especially with a midwife) in carrying out their work in FP/MCH and, ii) The health workers have gotten a feeling of the usefulness of family health records (statistical integration) in identifying targets in their own work and their usefulness in caring for family health. 2. On the other hand, because of a lack of required organizational factors, complete linkage was not obtained as the project intended. i) In regards to the government health worker's activities in terms of home visiting there was not much difference between the study & control areas though the MW did more home visiting than Government health workers. ii) In assessing the service performance of MW & health workers, the midwives balanced their workload between 40% FP, 40% MCH & 20% other activities (mainly immunization). However, $85{\sim}90%$ of the services provided by the health workers were other than FP/MCH, mainly for immunizations such as the encephalitis campaign. In the control area, a similar pattern was observed. Over 75% of their service was other than FP/MCH. Therefore, the pattern shows the health workers are a long way from becoming multipurpose workers even though the government is pushing in this direction. 3. Villagers were much more likely to visit the health sub-center clinic in the study area than in the control area (58% vs.31%) and for more combined care (45% vs.23%). C) Organization factors (admistrative integrative issues) 1. When MW (new workers with higher qualification) were introduced to HSC, it was noted that there were conflicts between the existing HSC workers (Nurse aids with less qualification than MW) and the MW for the beginning period of the project. The cause of the conflict was studied by an anthropologist and it was pointed out that these functional integration problems stemmed from the structural inadequacies of the health subcenter organization as indicated below; i) There is still no general consensus about the objectives and goals of the project between the project staff and the existing health workers. ii) There is no formal linkage between the responsibility of each member's job in the health sub-center. iii) There is still little chance for midwives to play a catalytic role or to establish communicative networks between workers in order to link various knowledge and skills to provide better FP/MCH services in the health sub-center. 2. Based on the above findings the project recommended to the County Chief (who has power to control the administrative staff and the technical staff in his county) the following ; i) In order to solve the conflicts between the individual roles and functions in performing health care activities, there must be goals agreed upon by both. ii) The health sub·center must function as an autonomous organization to undertake the integration health project. In order to do that, it is necessary to support administrative considerations, and to establish a communication system for supervision and to control of the health sub-centers. iii) The administrative organization, tentatively, must be organized to bind the health worker's midwive's and director's jobs by an organic relationship in order to achieve the integrative system under the leadership of health sub-center director. After submitting this observation report, there has been better understanding from frequent meetings & communication between HW/MW in FP/MCH work as the program developed. Lessons learned from the Seosan Project (on issues of FP/MCH integration in Korea); 1) A majority or about 80% of the couples are now practicing FP. As indicated by the study, there is a growing demand from clients for the health system to provide more MCH services than FP in order to maintain the achieved small size of family through FP practice. It is fortunate to see that the government is now formulating a MCH policy for the year 2,000 and revising MCH laws and regulations to emphasize more MCH care for achieving a small size family through family planning practice. 2) Goal consensus in FP/MCH shouBd be made among the health workers It administrators, especially to emphasize the need of care of 'wanted' child. But there is a long way to go to realize the 'real' integration of FP into MCH in Korea, unless there is a structural integration FP/MCH because a categorical FP is still first priority to reduce the rate of population growth for economic reasons but not yet for health/welfare reasons in practice. 3) There should be more financial allocation: (i) a midwife should be made available to help to promote the MCH program and coordinate services, (in) there should be a health sub·center director who can provide leadership training for managing the integrated program. There is a need for 'organizational support', if the decision of integration is made to obtain benefit from both FP & MCH. In other words, costs should be paid equally to both FP/MCH. The integration slogan itself, without the commitment of paying such costs, is powerless to advocate it. 4) Need of management training for middle level health personnel is more acute as the Government has already constructed 90 MCH centers attached to the County Health Center but without adequate manpower, facilities, and guidelines for integrating the work of both FP and MCH. 5) The local government still considers these MCH centers only as delivery centers to take care only of those visiting maternity cases. The MCH center should be a center for the managment of all pregnancies occurring in the community and the promotion of FP with a systematic and effective linkage of resources available in the county such as i.e. Village Health Worker, Community Health Practitioner, Health Sub-center Physicians & Health workers, Doctors and Midwives in MCH center, OBGY Specialists in clinics & hospitals as practiced by the Seosan project at primary health care level.

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A study on the Regulatory Environment of the French Distribution Industry and the Intermarche's Management strategies

  • Choi, In-Sik;Lee, Sang-Youn
    • 산경연구논집
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    • 제3권1호
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    • pp.7-16
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    • 2012
  • Despite the enforcement of SSM control laws such as 'the Law of Developing the Distribution Industry (LDDI)' and 'the Law of Promoting Mutual Cooperation between Large and Small/medium Enterprises (LPMC)' stipulating the business adjustment system, the number of super-supermarkets (SSMs) has ever been expanding in Korea. In France, however, Super Centers are being regulated most strongly and directly in the whole Europe viewing that there is not a single SSM in Paris, which is emphasized to be the outcome from French government's regulation exerted on the opening of large scale retail stores. In France, the authority to approve store opening is deeply centralized and the store opening regulation is a socio-economic regulation driven by economic laws whereas EU strongly regulates the distribution industry. To control the French distribution industry, such seven laws and regulations as Commission départementale d'urbanisme commercial guidelines (CDLIC) (1969), the Royer Law (1973), the Doubin Law (1990), the Sapin Law (1993), the Raffarin Law (1996), solidarite et renouvellement urbains (SRU) (2000), and Loi de modernisation de l'économie (LME) (2009) have been promulgated one by one since the amendment of the Fontanet guidelines, through which commercial adjustment laws and regulations have been complemented and reinforced while regulatory measures have been taken. Even in the course of forming such strong regulatory laws, InterMarche, the largest supermarket chain in France, has been in existence as a global enterprise specialized in retail distribution with over 4,000 stores in Europe. InterMarche's business can be divided largely into two segments of food and non-food. As a supermarket chain, InterMarche's food segment has 2,300 stores in Europe and as a hard-discounter store chain in France, Netto has 420 stores. Restaumarch is a chain of traditional family restaurants and the steak house restaurant chain of Poivre Rouge has 4 restaurants currently. In addition, there are others like Ecomarche which is a supermarket chain for small and medium cities. In the non-food segment, the DIY and gardening chain of Bricomarche has a total of 620 stores in Europe. And the car-related chain of Roady has a total of 158 stores in Europe. There is the clothing chain of Veti as well. In view of InterMarche's management strategies, since its distribution strategy is to sell goods at cheap prices, buying goods cheap only is not enough. In other words, in order to sell goods cheap, it is all important to buy goods cheap, manage them cheap, systemize them cheap, and transport them cheap. In quality assurance, InterMarche has guaranteed the purchase safety for consumers by providing its own private brand products. InterMarche has 90 private brands of its own, thus being the retailer with the largest number of distributor brands in France. In view of its IT service strategy, InterMarche is utilizing a high performance IT system so as to obtainas much of the market information as possible and also to find out the best locations for opening stores. In its global expansion strategy of international alliance, InterMarche has established the ALDIS group together with the distribution enterprises of both Spain and Germany in order to expand its food purchase, whereas in the non-food segment, it has established the ARENA group in alliance with 11 international distribution enterprises. Such strategies of InterMarche have been intended to find out the consumer needs for both price and quality of goods and to secure the purchase and supply networks which are closely localized. It is necessary to cope promptly with the constantly changing circumstances through being unified with relevant regions and by providing diversified customer services as well. In view of the InterMarche's positive policy for promoting local partnerships as well as the assistance for enhancing the local economic structure, implications are existing for those retail distributors of our country.

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국내 조류인플루엔자 발생 지역의 모델 패턴을 활용한 고병원성조류인플루엔자(HPAI)의 감염가능 지역 분석 (Analysis of Potential Infection Site by Highly Pathogenic Avian Influenza Using Model Patterns of Avian Influenza Outbreak Area in Republic of Korea)

  • 엄치호;박선일;배선학
    • 한국지리정보학회지
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    • 제20권2호
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    • pp.60-74
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    • 2017
  • 지리정보시스템(Geographic Information System: 이하 GIS)은 고병원성조류인플루엔자(Highly Pathogenic Avian Influenza: 이하 HPAI)의 예찰, 역학조사, 감염농장 관리, 예방적 살처분 실시, 청정화 진행 등 질병관리를 위한 전 과정에서 공간 위치정보의 관리와 표현 그리고 의사결정을 위한 도구로 활용될 수 있다. 우리나라에서도 2010-2011년 구제역 발생으로 큰 피해를 본 이후, GIS와 연계된 국가동물방역통합시스템(Korea Animal Health Integrated System: 이하 KAHIS)를 구축하여 가축전염병 관리를 시행하고 있다. 그러나 농장 및 축산관련 시설과 차량에 대한 관리 및 모니터링 수준의 KAHIS 방역통합시스템은 HPAI 예찰 및 방역에 역부족이다. 따라서 KAHIS시스템과 더불어 효율적 가축질병(HPAI) 관리를 위하여 본 연구를 실시하였다. 본 연구에서는 2014년 기준 HPAI 감염농장의 특성을 바탕으로 차후 HPAI 감염 가능 농장을 예측하였다. HPAI 감염농장 특징 분석을 위하여 권역별 HPAI-양성농장의 개수와 밀도 및 가금사육 두수를 조사하였다. 조사결과 HPAI-양성농장의 82.4%가 전라지역과 충청지역에 분포하고 있었다. 위 두 지역에 위치한 HPAI-양성농장(충청지역: $4.2{\pm}5.6$, 전라지역: $2.2{\pm}1.1$)은 HPAI-음성농장(충청지역: $1.8{\pm}1.5$, 전라지역: $1.7{\pm}0.7$)에 비하여 통계적으로 높은 밀도값을 보여주었다. 또한 HPAI-양성농장의 92.4%에서 가금두수 최소 6,537에서 최대 24,250를 사육하고 있었다. 위의 HPAI 감염농장 특징은 GIS Multiple Ring Butter(MRB) 기능을 이용하여 차후 HPAI 감염 가능 농장을 예측하는데 사용되었다. 분석결과 철새도래지 반경 30km(386개)와 35km(407개) 내 위치한 HPAI-양성농장의 수는 HPAI 확산 후 전국 감염농장(429개)과 유사한 값을 보여주었다. 또한 철새도래지 반경 30km 내 위치한 일반가금농장 중 하천 반경 1-1.5km와 지방도로 반경 1km에 중첩되는 지역에 위치한 일반가금농장의 개수(324-409개) 및 지리적 위치는 2014년 HPAI-양성농장의 개수(386개)와 90.0% 그리고 지리적 위치와 54.8%의 유사성을 보였다. 본 연구는 철새도래지의 위치정보와 가금농장의 위치 및 사육가금두수의 정보를 토대로 GIS분석을 통하여 앞으로 발생할 HPAI 발생농장에 대한 추이를 판단할 수 있을 것으로 기대된다.

인공신경망을 이용한 MMORPG 설계의 핵심성공요인 식별 (Identifying the Key Success Factors of Massively Multiplayer Online Role Playing Game Design using Artificial Neural Networks)

  • 정회일;박일순;안현철
    • 한국전자거래학회지
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    • 제17권1호
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    • pp.23-38
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    • 2012
  • NC소프트, NHN, 넥슨 등 국내 업체들을 필두로 최근 대규모 다중 사용자 온라인 롤플레잉 게임(Massive Multiplayer Online Role Playing Game, 이하 MMORPG) 시장이 크게 확대되고 있다. 하지만, MMORPG의 경우 막대한 초기투자비용이 소요되는데 반해, 성공으로 이어지는 게임의 수는 그 수가 매우 적어, 초기 기획 단계부터 사용자들의 구미에 맞는 게임을 설계하는 것이 국내 MMORPG 산업에 있어 주요한 도전과제로 대두되고 있다. 이러한 배경 하에 본 연구는 MMORPG에 대한 사용자 만족에 영향을 미치는 주요 설계 요소들을 기존 문헌을 통해 도출하고, 이들 요소들 중 MMORPG 게임의 만족도 및 지불의향에 가장 크게 영향을 미치는 핵심 요인들은 무엇인지 식별해 보고자 하였다. 주로 분석적 계층 프로세스(AHP) 기법을 이용해 MMORPG 설계요소에 대한 분석을 시도한 기존 연구들과 달리, 본 연구에서는 대표적인 인공지능 기법 중 하나인 인공신경망 기법을 이용해, MMORPG 설계의 핵심성공요인을 식별해 보고자 하였다. 분석결과, 사용자의 만족도에는 부가가치 시스템 관련 요인들보다는 게임 컨텐츠 자체의 품질과 관련한 요인들이 더 크게 영향을 미치는 것으로 나타났다. 반면 사용자의 지불의향에는 부가가치 시스템 관련 요인들이 게임 컨텐츠의 품질 관련 요인들보다 더 큰 영향을 미치는 것으로 나타났다. 이러한 본 연구의 결과는 MMORPG 사용자의 만족을 결정하는 설계요소와 지불의향을 결정하는 설계요소 사이에는 서로 차이가 있기 때문에, 게임의 성격과 시장진출 전략에 따라 업체에서 집중해야 할 설계 요소가 반드시 달라져야 함을 시사한다. 아울러, 만족도와 지불의향 모두에 가장 큰 영향을 미치는 설계 요소는 '사용자 인터페이스(user interface)'라는 사실도 함께 확인할 수 있었는데, 이는 사용자가 편리하고 직관적으로 조작할 수 있는 환경이 기본적으로 제공되지 않는 한 MMORPG의 사용자 만족과 수익창출 모두 달성되기 어렵다는 점을 우리에게 시사한다고 할 수 있다. 이러한 본 연구의 시사점들은 향후 MMORPG 개발업체나 유통업체의 전략 수립에 유용하게 활용될 수 있을 것으로 기대된다.

가정과교사 문화의 특징과 발전 방안 (Characteristics and development plan of Home Economics teachers' culture)

  • 김승희;채정현
    • 한국가정과교육학회지
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    • 제30권2호
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    • pp.77-102
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    • 2018
  • 본 연구의 목적은 가정과교사 문화의 특징과 가정과교육 발전의 저해 요소를 밝힘으로써 가정과교사 문화의 발전 방안을 제시하는데 있다. 이를 위해 집중면접의 주제 분석법을 실행하였으며, 각 지역 가정교과연구회 또는 한국가정과교육학회 소속 석사과정 이상인 가정과교사 14명을 대상으로 이루어졌다. 응답 자료 분석을 위해 주제 분석법을 실행하였다. 본 연구의 결과는 다음과 같다. 첫째, 가정과교사들은 가정과교육의 철학을 정립한 후 가정교과가 청소년 개인과 가정, 그리고 사회를 이롭게 하는 실천비판교과라는 신념을 확고히 가지고 가정과수업을 통해서 청소년과 그들의 가정, 더 나아가 사회에 유익을 주는 교육을 실천하고 있었다. 둘째, 가정과교사들은 대학원에 진학하거나 가정교과연구회에 가입하여 수업 방법, 평가 방법, 업무 능력을 향상시키고, 수업을 공개하는 등 지속해서 전문성을 향상시키기 위해서 노력하는 문화를 형성하고 있었다. 셋째, 가정과교사들은 가정과교육 패러다임을 실천비판 패러다임으로 전환하여 실천적 문제 중심 수업을 실행해야 한다는 문화를 자리매김하였다. 또한, 그들은 세 행동체계(기술적 행동, 의사소통적 행동, 해방적 행동)를 순환적으로 적용하여 삶의 질과 가치를 향상시켜야 한다고 보았다. 넷째, 가정과교육의 발전을 저해하는 요소에는 교육제도와 사회적 인식이 있었다. 하지만 가정과교사들의 노력으로 가정과교육은 학생과 사회적 요구를 반영한 교육, 학생의 적성을 찾아주며 가정교과의 목표를 잘 살린 교육으로 자리 잡고 있었고, 이를 통해 가정과교사들은 학생들이 가정교과가 개인과 가정의 행복을 위해 꼭 필요한 교과라는 인식의 전환을 가져올 수 있다고 믿었다. 가정과교사문화의 발전방안으로 가정과교사들은 각 지역의 가정교과연구회에서는 더 많은 가정과교사들이 연구회에 참여하고 활동함으로써 발전할 수 있는 기회를 마련해야 한다고 하였다. 또한 지역의 가정교과연구회끼리 협력적 네트워크를 활성화하고 이를 이끌 수 있는 컨트롤타워가 필요하다고 했다. 한국가정과교육학회는 각 지역의 교과연구회의 중심점 역할이 되어서 다가올 교육 변화에 더욱 신속하고 조직적으로 움직여 적극적으로 대처함으로써 가정과교사들의 힘이 될 수 있어야 할 것이다. 마지막으로 참여자는 가정과교육의 변화를 위한 기초적 틀을 마련하기 위해 실천 비판적 가정과교사 양성이 필요하다고 했다. 이를 위해 가정과교사 양성과정에서 학생들이 더욱 깊이 있는 가정교과교육철학을 수강함으로써 가정교육학의 본질을 이해하고 정체성을 확립하여 유능하고 성숙한 가정과교사로서의 자질을 갖출 수 있을 것이다.

소의 체세포핵이식태반과 정상태반간의 차등 발현 유전자 분석 (Identification of Differentially Expressed Genes Between Somatic Cell Nuclear Transfer and Normal Placenta in Cattle)

  • 유성란;정행진;상병찬;류승희;정기철;윤종택;성환후;진동일;이준헌
    • Journal of Animal Science and Technology
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    • 제50권5호
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    • pp.641-648
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    • 2008
  • 체세포핵이식을 이용하여 복제동물을 생산하고자하는 연구가 계속적으로 진행되고 있으며 현재까지 많은 성과를 거두고 있으나 복제동물의 성공률이 현저히 낮은 것은 잘 알려진 사실이다. 본 연구에서는 복제동물생산과 관련된 여러 가지 이유 중 정상태반과 체세포복제소의 태반사이의 차등발현 유전자를 발굴하기 위해서 각각의 태반에서 total RNA를 추출하였고 이를 20개의 arbitrary ACPs를 이용하여 정상과 체세포이식태반사이에서 차등발현되는 유전자를 조사한 결과 8개의 발현차이를 보이는 band를 확인할 수 있었고 이 유전자들의 염기서열을 이용하여 BLAST search한 결과 정상태반에서는 CTSZ, LOC509426 및 ELF1 유전자의 발현이 높았고 체세포이식태반에서는 TIMP2, PAG1B, PAG-21, LOC782894, SERPINB6 및 mKIAA2025 protein 유전자의 발현이 높아 총 9개의 차등발현 유전자를 확인할 수 있었다. 이 결과중 체세포핵이식태반에서 발현이 높은 유전자중 아직까지 기능이 밝혀지지 않은 mKIAA 2025 protein를 제외하고 5개의 유전자는 quantitative real-time PCR를 이용하여 유전자의 발현을 재확인하여 체세포핵이식태반에서 발현이 높음을 재확인하였다. 본 연구는 체세포핵이식태반에서 발현차이를 보이는 유전자들 중 극히 일부분만을 확인하였으나 앞으로 더 많은 유전자들과 상호관계를 확인한다면 체세포복제생산에서 태반내의 유전자 변화에 관한 기전을 밝히는데 도움이 될 것이라고 사료된다.

네트워크 구조와 조직학습문화, 지식경영참여가 개인창의성 및 성과에 미치는 영향에 관한 실증분석: SI제안팀과 R&D팀의 비교연구 (Exploring Influence of Network Structure, Organizational Learning Culture, and Knowledge Management Participation on Individual Creativity and Performance: Comparison of SI Proposal Team and R&D Team)

  • 이건창;서영욱;채성욱;송석우
    • Asia pacific journal of information systems
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    • 제20권4호
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    • pp.101-123
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    • 2010
  • Recently, firms are operating a number of teams to accomplish organizational performance. Especially, ad hoc teams like proposal preparation team are quite different from permanent teams like R&D team in the sense of how the team forms network structure and deals with organizational learning culture and knowledge management participation efforts. Moreover, depending on the team characteristics, individual creativity will differ from each other, which will lead to organizational performance eventually. Previous studies in the field of creativity are lacking in this issue. So main objectives of this study are organized as follows. First, the issue of how to improve individual creativity and organizational performance will be analyzed empirically. This issue will be performed depending on team characteristics such as ad hoc team and permanent team. Antecedents adopted for this research objective are cultural and knowledge factors such as organizational learning culture, and knowledge management participation. Second, the network structure such as degree centrality, and structural hole is used to analyze its influence on individual creativity and organizational performance. SI (System Integration) companies are facing severely tough requirements from clients to submit very creative proposals. Also, R&D teams are widely accepted as relatively creative teams because their responsibilities are focused on suggesting innovative techniques to make their companies remain competitive in the market. SI teams are usually ad hoc, while R&D teams are permanent on an average. By taking advantage of these characteristics of the two kinds of teams, we will prove the validity of the proposed research questions. To obtain the survey data, we accessed 7 SI teams (74 members), and 6 R&D teams (63 members), collecting 137 valid questionnaires. PLS technique was applied to analyze the survey data. Results are as follows. First, in case of SI teams, organizational learning culture affects individual creativity significantly. Meanwhile, knowledge management participation has a significant influence on Individual creativity for the permanent teams. Second, degree centrality Influences individual creativity significantly in case of SI teams. This is comparable with the fact that structural hole has a significant impact on individual creativity for the R&D teams. Practical implications can be summarized as follows: First, network structure of ad hoc team should be designed differently from one of permanent team. Ad hoc team is supposed to show a high creativity in a rather short period, implying that network density among team members should be improved, and those members with high degree centrality should be encouraged to show their Individual creativity and take a leading role by allowing them to get heavily engaged in knowledge sharing and diffusion. In contrast, permanent team should be designed to take advantage of structural hole instead of focusing on network density. Since structural hole can be utilized very effectively in the permanent team, strong arbitrators' merits in the permanent team will increase and therefore helps increase both network efficiency and effectiveness too. In this way, individual creativity in the permanent team is likely to lead to organizational creativity in a seamless way. Second, way of Increasing individual creativity should be sought from the perspective of organizational culture and knowledge management. Organization is supposed to provide a cultural atmosphere in which Innovative idea suggestions and active discussion among team members are encouraged. In this way, trust builds up among team members, facilitating the formation of organizational learning culture. Third, in the ad hoc team, organizational looming culture should be built such a way that individual creativity can grow up fast in a rather short period. Since time is tight, reasonable compensation policy, leader's Initiatives, and learning culture formation should be done In a short period so that mutual trust is built among members quickly, and necessary knowledge and information can be learnt rapidly. Fourth, in the permanent team, it should be kept in mind that the degree of participation in knowledge management determines level of Individual creativity. Therefore, the team ought to facilitate knowledge circulation process such as knowledge creation, storage, sharing, utilization, and learning among team members, which will lead to team performance. In this way, firms must control knowledge networks in permanent team and ad hoc team in a way mentioned above so that individual creativity as well as team performance can be maximized.