• Title, Summary, Keyword: Work Efficiency

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Tendency of Kindergarten Teachers' Work Performance and the Reality and Efficiency of their Working Hours (유치원 교사의 업무수행 경향성과 업무시간 운영의 실제 및 효율성에 대한 인식)

  • Ahn, Hye Jung;Lee, Seung Yeon
    • 육아정책연구
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    • v.12 no.3
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    • pp.3-27
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    • 2018
  • The purposes of this study were to examine a tendency of kindergarten teachers' daily work performance and to explore their perceptions on the reality and efficiency of working hours. 273 public and private kindergarten teachers completed questionnaires. The findings of the study are as follows. First, kindergarten teachers carried out an average of 1.41 duties per a 30-minute segment, and there were some differences in their duties between public and private teachers. Second, as a key reason of their lack of preparation time for class, public teachers indicated much administrative work, whereas private teachers indicated many events and common work. In addition, for the work duties that require supporting staff, public teachers pointed out clerical work, whereas private teachers named event-related duties. Third, in terms of efficiency of their working hours, both public and private teachers highlighted excessive workload as a key obstacle; public teachers also indicated the shortage of supporting staff, while private teachers indicated many event-related duties and lack of directors' leadership. These findings imply that it is important to maintain an optimum level of workload for kindergarten teachers, to secure preparation time for class, to increase work efficiency, and to provide support specific to kindergarten types.

Living Environment, Musculoskeletal Disorder and the Decrease of Work Efficiency & Quality of Life (생활 환경요인에 의한 근골격계 질환이 업무능률 및 삶의 질 저하에 미치는 영향)

  • Park, Jong-Ho;Kim, Eun-Jeong
    • The Journal of Industrial Distribution & Business
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    • v.8 no.7
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    • pp.63-70
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    • 2017
  • Purpose - Due to the lack of physical activities and the increase of sedentary behaviors such as screen time, the health condition for contemporaries has been deteriorating. This study is designed to investigate how the use of worktable or tools unfit for body and sedentary behaviors can exercise influence on muscular skeletal disease and how it has an impact on lowering work efficiency and the quality of life with the medium of the muscular skeletal disease. Research design, data, and methodology - The research has developed a questionnaire with 5 hypothesis. The questionnaires were also made by interview and E-mail. 350 copies of questionnaires were distributed and 315 questionnaire were used for the analysis as valid data responses. SPSS ver.22.0 were used and made Cronbach's and reliability test, correlation, Baron & α Kenny 3 step mediated regression analysis. Results - The research has found that living environment factors have positive effect on the occurrence of musculosketal disease. Particularly, repeated use of unfit worktable or tools has a positive effect on the muscular skeletal disorder. And sedentary lifestyle also has a positive effect on the disease. The musculoskeletal disease caused by living environment has a positive impact on lowering the work efficiency. This study has also showed that the muscular skeletal disease has mediated the relationship between the living environment factors and the decrease of work efficiency due to musculoskeletal disease. The musculoskeletal disorders can effect the decrease of the quality of life as well, for the decrease of work efficiency has a positive effect on lowering the quality of life. Conclusions - Sedentary lifestyles, the use of worktable unfit for body, and the repeated use of a tool have caused the increase of muscular-skeletal diseases, and reduction of productivity as well as the hight cost of medical treatment for our contemporaries. Understanding the cause of disease morbidity, finding ways to prevent the disease, and educating people about them would contribute not only to improvement of individual health but also to the advancement of welfare for all.

A Study of the Work Efficiency in the High Altitude according to Climatic Elements (지역별 기후에 따른 고소작업가능률 산정 - 서울, 인천, 부산 지역을 중심으로 -)

  • Lee, Hyun-Soo;Cho, Sung-Jun;Park, Moon-Seo;Hwang, Sung-Joo;Kim, Hyun-Soo
    • Korean Journal of Construction Engineering and Management
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    • v.13 no.3
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    • pp.67-77
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    • 2012
  • O Having a highly reliable plan for the process and estimating an accurate construction period during the early stages of a construction project can prevent falsifying the plan and reduce the occurrence of construction delays. Moreover, it allows a succession of swift and accurate decisions to happen. The difficulty in obtaining an accurate estimate of the construction period is especially prominent in high-rise building projects because the works involved are very complicated and costly. As such, it is important that research is done to find out the impacts a reliable plan and good estimate of the construction period can bring with regards to the monthly work efficiency and success of a high-rise building project. However, due to the difference in climatic conditions at high altitude and surface level, the current way of calculating work efficiency in a typical project is inaccurate for a high-rise building project. With that, this paper aims to compute the work efficiency with height, taking into consideration the change in climatic elements at different working heights. A comparison of the results according to the climatic features of each city can also be done in this paper. According to the results calculated in work altitudes, the work efficiency in Busan falls the most. On the other hands, the work efficiency in Seoul falls the least. The reason these results are shown is the influence of wind speed at high altitude. The estimation of work efficiency at high altitude would be used for estimating construction period, feasibility studies, and selecting a city of high-rise building projects.

Work limit Load Efficiency According to Splicing Method for Hand Spliced Wirerope Sling (스플라이스식 와이어로프 슬링의 편입법에 따른 사용하중한계효율)

  • Park, Jae-Suk;Han, Kyoung-Hun
    • Journal of the Korean Society of Safety
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    • v.25 no.6
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    • pp.70-74
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    • 2010
  • For each strand of wirerope sling, the international standards, ISO-8794, EN-13414 specify that the splice shall have five series of load carrying tucks. At least three of the load carrying tucks shall be made with the whole strand. And, the breaking force of the splice shall not be less than 70% or 80% of that of rope. But, There are no prescriptions for splicing types against different efficiency of each splicing type being used many workplace. In this study, analysis the work limit load efficiency according to variation of number of tucks and splicing types by experimental method As a result, the number of tucks 3+2 had the highest breaking efficiency.

The Effect of Advice Information for Arriving Aircraft Landing Order on Air Traffic Controller's Work Efficiency (도착항공기 착륙순서에 관한 조언정보가 관제사 업무효율에 미치는 영향)

  • Kim, Seyeon;Chai, Hongah;Jung, Hyuntae;Kim, Huiyang;Lee, Keumjin
    • Journal of the Korean Society for Aviation and Aeronautics
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    • v.26 no.3
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    • pp.23-31
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    • 2018
  • This paper describes the effect of advice information for arriving aircraft landing order on the air traffic controller's work efficiency. The air traffic control simulator used in the experiment was modeled on the basis of the aircraft parameters from BADA, gamma-command model and the 4-dimensional trajectory using the Bezier curve. The simulation results show that advice information was helpful for the performance of the work for users who did not have the air traffic control training. On the other hand, in case of users who have experience in air traffic control training, the work efficiency was lowered when the advisory information that does not reflect the user's intention is provided. Therefore, it can be seen that the effect of improving the work efficiency through advice information can be limited depending on the skill level of the air traffic controllers and the complexity of the air traffic situation.

Measures to Improve the Work Process Through the Convergence of Social Welfare based on IT (IT기반 사회복지 융합을 통한 업무 프로세스의 개선방안)

  • Kim, Jung-Hoon;Lee, Keun-Ho
    • Journal of the Korea Convergence Society
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    • v.5 no.4
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    • pp.33-38
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    • 2014
  • The progress in IT has increased work efficiency in many fields, leading to the start of a new era where information is exchanged by connecting all objects under the paradigm of IoT. Interest is growing on the convergence of various fields of study that goes beyond simply applying IT to research to increase efficiency in multidisciplinary studies. As such, there is a need to develop an IT-based model that can be applied to social welfare work. Social welfare workers in Korea at present have twice the workload and stress of those of their counterparts in other OECD countries. This leads to decreased work efficiency. This paper seeks to suggest a way to increase efficiency in social welfare work by improving the work process through IT-based systems. The study is expected to contribute to increased efficiency in the area of social welfare.

Design Principles and Validation of a Human-sized Quadruped Robot Leg for High Energy Efficiency (에너지 효율적인 인간 크기 4족 보행 로봇의 설계와 검증)

  • Yeom, Hoyeon;Ba, Dang Xuan;Bae, Joonbum
    • The Journal of Korea Robotics Society
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    • v.13 no.2
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    • pp.86-91
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    • 2018
  • This paper presents about design efforts of a human-sized quadruped robot leg for high energy efficiency, and verifications. One of the representative index of the energy efficiency is the Cost of Transport (COT), but increased in the energy or work done is not calculated in COT. In this reason, the input to the output energy efficiency should be also considered as a very important term. By designing the robot with customized motor housing, small rotational inertia, and low gear ratio to reduce friction, high energy efficiency was achieved. Squatting motion of one leg was performed and simulation results were compared to the experimental results for validation. The developed 50 kg robot can lift the weight up to 200 kg, and during squatting, it showed high energy efficiency. The robot showed 71% input to output energy efficiency in positive work. Peak current during squatting only appears to be 0.3 A.

A Study on the Effect of Professionality of Franchise Education Program on the Satisfaction, Work Efficiency and Business Performance

  • Song, Ji-Hyun;Jo, Gye-Beom
    • Journal of the Korea Society of Computer and Information
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    • v.24 no.11
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    • pp.245-254
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    • 2019
  • In this paper, We analyze the effect of professionality of franchise education program on the satisfaction, work efficiency and business performance, to find how to develop education program which is considered as important in franchise management and to propose ways of sustainable operation of franchise education program. In this study, we carried out survey for 224 users who have competed franchise education programs. We divided the professionality of franchise education program into education instructors, education contents, education environment and education methods through precedent study. For the verification of study hypothesis, we used single regression and multiple regression analysis to verify the relationship between variables. The core study results are as follows. First, professionality of franchise education program is positively related to the satisfaction. Second, professionality of franchise education is positively related to work efficiency. Third, satisfaction affects work efficiency. Fourth, satisfaction and work efficiency have positive effect on business performance. Based on these study results, we found that if education program suitable for the industry and subjects from instructors to education method is developed to improve the professionality of franchise program and continuous communication and improvement is made to increase satisfaction and work efficiency, the franchise education program will create good results.

Development of Maintenance Information System for Electric Multiple Unit (도시철도 차량 유지보수 정보화시스템 개발)

  • Park, Kee-Jun;Kim, Moon-Hyun;Ahn, Tae-Ki
    • Journal of the Korean Society for Railway
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    • v.9 no.5
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    • pp.577-581
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    • 2006
  • Urban transit operation corporations perform repetitive work to investigate the EMU, electric multiple unit, by some fixed maintenance cycle. The quality of maintenance work usually depends on workers' know-how. Though some information to support the maintenance work is digitalized and provided to workers, it is not great help to them because of its non systematic structure. The information includes drawings, manuals, work results, work history, fault history, etc. The maintenance workers want to access the information anytime anywhere, and make an effect to promote the efficiency of maintenance for EMU. But it is difficult to achieve that without some structured information system which is able to use in work area. So we develop maintenance information system for EMU for about 4 years from 2002 to 2005. In this paper we present the configuration and characteristics of this system, and the results of the evaluation test. We install the system in two depots, Changdong and Jichuk, belonged to SeoulMetro to evaluate its efficiency and estimate its economic benefits.

High Work Function of AZO Fhin Films as Insertion Layer between TCO and p-layer and Its Application of Solar Cells

  • Kang, Junyoung;Park, Hyeongsik;Yi, Junsin
    • Proceedings of the Korean Vacuum Society Conference
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    • pp.426.1-426.1
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    • 2016
  • We report high work function Aluminum doped zinc oxide (AZO) films as insertion layer as a function of O2 flow rate between transparent conducting oxides (TCO) and hydrogenated amorphous silicon oxide (a-SiOx:H) layer to improve open circuit voltage (Voc) and fill factor (FF) for high efficiency thin film solar cell. However, amorphous silicon (a-Si:H) solar cells exhibit poor fill factors due to a Schottky barrier like impedance at the interface between a-SiOx:H windows and TCO. The impedance is caused by an increasing mismatch between the work function of TCO and that of p-type a-SiOx:H. In this study, we report on the silicon thin film solar cell by using as insertion layer of O2 reactive AZO films between TCO and p-type a-SiOx:H. Significant efficiency enhancement was demonstrated by using high work-function layers (4.95 eV at O2=2 sccm) for engineering the work function at the key interfaces to raise FF as well as Voc. Therefore, we can be obtained the conversion efficiency of 7 % at 13mA/cm2 of the current density (Jsc) and 63.35 % of FF.

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