• 디지털융복합연구
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• 제18권11호
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• pp.355-363
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• 2020

본 연구는 강원도 일부 지역의 치위생과 학생들을 대상으로 수업방법에 따른 수업 인식과 진로 인식의 변화를 살펴보기 위한 연구이다. 동일한 설문지를 사용하여, 2019년 12월에 대면 수업 후 1차 설문을 진행하였고, 2020년 7월에 비대면 수업 후 2차 설문을 진행하였다. 통계분석은 SPSS 24.0을 사용하였으며 결과는 다음과 같다. 학년에 따른 수업 인식과 진로 인식에 차이를 보였고, 학교생활 만족도와 치면세마 수업 만족도에 따라 진로 관심과 진로 호기심, 진로 자신감 차이를 보였다. 비대면 수업의 경우 인터넷을 통한 진로 결정의 비중이 높아졌으며, 진로 자신감도 상승하였다. 이 결과들은 실기과목 수업 운영에 있어 융복합적 측면을 고려한 플립러닝 수업과 같은 방법의 활용과 실기시험을 위한 표준화된 실기 동영상 제작에 필요한 기초자료로 제공될 수 있을 것이다.

• 가정과삶의질연구
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• 제30권5호
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• pp.89-105
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• 2012

The purpose of this study is to analyze working mothers' demand for child care and housekeeping home services, and to investigate the present supply condition of home services in Korea. Data collection was implemented to examine the service demand of working mothers(n=700) in four areas. The data were analyzed with SPSS. The results were as follows: 1) For home-based child-care dispatch services social enterprises are superior to other private service suppliers in terms of the treatment of service workers, wages, and quality control. As for child care service contents, the provision of meals, and casual safeguards were mostly expected. The most important qualification for care providers was found to be in faithfulness, and the certification related with child care was required. An affordable wage range was perceived as ￦3,000~5,000 per hour, and part time services. For the time range, services which commenced before 9 am and terminated after between 5~6 pm were preferred. 2) For housekeeping dispatch services, standard services, including basic cleaning, preparation of meals and side dishes, special cleaning, and washing, were in demand. The required qualifications of housekeeping service providers were similar to those of child care service providers. Possessing certification was not considered as an important quality; however, personality and career type were important factors. An acceptable wage range was ￦3,000~5,000 per hour and part-time services were preferred. In terms of the service time range, services which commenced between 8~9 am and terminated between 5~7 pm were preferred.

• 산경연구논집
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• 제8권3호
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• pp.11-18
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• 2017

Purpose - This study aims to analyze the effects of the social support on the economic activities from the Korean Chinese residing in Korea. Particularly, this paper focuses on the consequence of the economic activity intention according to the three kinds of social support. Research design, data, and methodology - For the statistics process of data collected by this survey, SPSS 19 statistics package program was used through data-coding and data-cleaning processes to analyze the data in this study. Results - This hypothesis was selected partially. As a result of investigating hypotheses in detail, Hypothesis 1-2 was significant as shown in the significance level 0.1, and when the emotional support was regarded important, the will of economic activities was also higher. Hypothesis 1-2 was found to be meaningful with the significance level of 0.05, and when the social support was regarded important, the will of economic activities was also higher. Lastly, Hypothesis 1-3 was found to not be statistically significant. Conclusions - The results of this study are expected to be used as basic data for vitalization of the Korean Chinese' economic activities and governmental support for it, and to be a guideline in preparing successful strategies for expansion of the Korean Chinese' economic activities in the future by applying these results.

• 한국인터넷방송통신학회논문지
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• 제9권4호
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• pp.25-31
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• 2009

본 연구는 제조업 분야의 생산공정관리 시스댐에 RFID를 적용하여, 투입된 인원과 생산 기계설비의 정확한 Cost Center 정보를 얻기 위한 RFID 리더기 응용기술 개발 및 데이터 전송장치에 관한 것이다. RFID Tag를 이용해 각 공정에 투입시 Tag를 RFID리더에서 체크하고 해당 공정을 마쳤을 때 다시 RFID리더에 자신의 Tag를 인식시킴으로써 공정별 투입된 시간을 정확히 산출, 자동으로 전송할 수 있도록 했다. 또한 그 동안 ERP시스탬이나 POP시스템에 누락되었던 생산기계설비의 워밍업 시간, 청소시간, 정전, 고장등의 시간을 계산하기 위해 각 공정별 생산기계설비에 고유한 RFID리더를 설치하고 기계설비도 하나의 객체로 인정하고 Tag를 발행하여 각각의 상황을 입력하는 터치스크린을 함께 설치해 기계설비의 정확한 Cost center 정보를 획득 할 수 있게 되었다.

• 한국항해항만학회지
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• 제47권4호
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• pp.182-190
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• 2023

본 연구에서는 벌크 선박의 연료 소비를 예측하기 위해 XGBoost와 SHapley Additive exPlanation (SHAP)을 사용하는 예측 모델을 제안한다. 기존 연구에서도 선박 엔진 데이터와 기상데이터를 활용하였지만 선박 연료소모량 예측 모델에 대한 예측 결과의 신뢰성과 예측 모델 구현에 사용된 변수들에 대한 설명이 부족한 한계가 있었다. 이러한 문제를 해결하기 위해 본 연구에서는 XGBoost와 SHAP를 사용하여 예측 모델을 개발하였다. 이 연구는 연구 배경, 범위, 관련 규정 및 이전 연구들, 그리고 연구 방법론에 대한 소개를 제공하며, 또한 벌크선 데이터 정제 방법과 예측 모델 결과의 검증을 설명한다.

• 가정과삶의질연구
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• 제11권2호
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• pp.169-181
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• 1993

The purpose of this study was to investigate the implementing level of housewife's manage-ment behavior related to reducing environmental pollution and the effects of three variable-groups on management behavior related to reducing environmental pollution. The research data were collected by structured questionnare and 544 cases were finnally selected. The data analysis was conducted by the method of frequency mean Pearson's correla-tion multiple regression. The major findings were as follows: 1) The implementing level of housewife's overall management behavior slightly high. 2) Wife's value(ecologicalism materialism expediency social-enviromental resources(degree of masscom contact degree of meeting with neighbors. refuse box) were significant predictors of the level of overall management behavior And Background variables(wife's aged and educa-tion level & job household income occupation of husband) had not significant effect on the level of overall management behavior. The most influential variable-group on the level of overall management behavior and buying cleaning & dishwashing cooking laundry activities was Wife's value. But the most influential variable-group on the implementing level of disposing trash was social-environmental resources.

• 대한용접접합학회:학술대회논문집
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• 대한용접접합학회 2002년도 Proceedings of the International Welding/Joining Conference-Korea
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• pp.418-424
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• 2002

Korean Fusion Reactor(KSTAR) system consists of a vacuum vessel, in-vessel components, cryostat, thermal shield, super-conducting magnets and magnet supporting structures. These systems are in the final stage of engineering design with the involvement of industrial manufacturers. The overall configuration and the detailed dimensions of the KSTAR structure have been determined and the first stage of manufacturing is progressing now. In this study, the fabrication and assembly sequence were evaluated in viewpoint of high strengthening joints and very high accuracy. Especially for this purpose, the special cleaning process and welding process were proposed for high strengthening austenitic stainless steel which shall be used at cryogenic temperature. The draft procedure qualification data for welding process are presented with precise welding data including special narrow groove design. For the cooling line attachment on the surface of inside wall of magnet structure case, Induction brazing technology is introduced with some special jigging system and some consumables.

• 한국초등과학교육학회지:초등과학교육
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• 제37권1호
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• pp.27-38
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• 2018

The purpose of this study was to investigate the perceptions of the students about professionalism on the elementary teachers' science teaching through network analysis of keyword. For this study, questionnaires were conducted to elementary school students. The collected data were translated by coding and data cleaning. And then analyzed by Gephi 0.9.2 program as a tool of the network analysis. The results of this study were as follows: Top 5 words in betweenness centrality were 'smart, experiment, fun, various, and student understanding'. There was some difference of perceptions of students according to personal backgrounds(gender, grade and interest toward science class). Based on the result of this study, implications to improve elementary teachers' science teaching professionalism were suggested.

• 대한치과기공학회지
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• 제43권3호
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• pp.84-92
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• 2021

Purpose: The purpose of this study was to compare the dimension safety evaluation between a general ultrasonic cleaner and an ultrasonic cleaner equipped with UV-C (ultraviolet-C). Methods: An edentulous model was prepared. A denture base and an occlusal rim were fabricated, and scanning was performed. After scanning, a denture base and full arch artificial teeth were designed. The full arch artificial teeth were printed using a three-dimensional printer (n=10). The residual resin was washed with alcohol and then scanned (reference data). The printed specimens were classified and cleaned using a general ultrasonic cleaner (GU group) and an ultrasonic cleaner equipped with UV-C (UC group). After each washing, a rescan was performed (scan data). Reference data and scan data were superimposed using overlapping software. Data were statistically analyzed using the Mann-Whitney test (α=0.05). Results: In the deviation values of full arch artificial teeth, the GU group showed a high deviation of 18.02 ㎛ and the UC group showed a low deviation of 15.02 ㎛. The two groups demonstrated a statistically significant difference (p<0.05). Conclusion: Full arch artificial teeth prepared using photopolymerized resin were deformed according to the temperature of water generated in the ultrasonic cleaner. It is judged that there is no deformation according to the UV-C ultrasonic cleaner.

• International Journal of Computer Science & Network Security
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• 제23권9호
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• pp.95-99
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• 2023

Recently Machine Learning has been considered as one of the active research areas of Computer Science. The various Artificial Intelligence techniques are used to solve the classification problems of environmental sciences, biological sciences, and medical sciences etc. Due to the heterogynous and malfunctioning weather sensors a considerable amount of noisy data with missing is generated, which is alarming situation for weather prediction stockholders. Filling of these missing values with proper method is really one of the significant problems. The data must be cleaned before applying prediction model to collect more precise & accurate results. In order to solve all above stated problems, this research proposes a novel weather forecasting system which consists upon two steps. The first step will prepare data by reducing the noise; whereas a decision model is constructed at second step using regression algorithm. The Confusion Matrix will be used to evaluation the proposed classifier.