• Title/Summary/Keyword: working school

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The characteristics of dye-sensitized solar cells using carbon nanotube in working and counter electrodes (작업전극과 상대전극에 탄소나노튜브를 이용한 염료감응 태양전지의 특성연구)

  • Kim, Bora;Song, Suil;Lee, Hak Soo;Cho, Namjun
    • Analytical Science and Technology
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    • v.27 no.6
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    • pp.308-313
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    • 2014
  • The effect of electrochemical characteristics of dye-sensitized solar cells (DSSC) upon employing multi-wall carbon nanotube (MWCNT) on both working electrode and counter electrode were examined with using EIS, J-V curves and UV-Vis absorption spectrometry. When 0.1 wt% of MWCNT was employed in the $TiO_2$-MWCNT composit on working electrode, the energy conversion efficiency increased about 12.5% compared to the $TiO_2$ only working electrode. The higher light conversion efficiency may attribut to the high electrical conductivity of MWCNT in $TiO_2$-MWCNT composite which improves the electron transport in the working electrode. However, higher amount of MWCNT than 0.1 wt% in the $TiO_2$-MWCNT composite decreases the light conversion efficiency, which is mainly ascribed to the decreased transmittance of light by MWCNT and to the decreased adsorption of dye onto $TiO_2$. The MWCNT employed counter electrode exhibited much lower light conversion efficiency of DSSC than the Pt-counter electrode, while the MWCNT-Pt counter electrode showed similar in light conversion efficiency to that of Pt-counter electrode.

Working Mother's Child-rearing Behavior According to Self-esteem, Life Satisfaction, and Job Characteristics (자아존중감, 생활만족도 및 직업특성에 따른 취업모의 양육행동)

  • No, Jin-A;Lee, Sook
    • Korean Journal of Human Ecology
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    • v.6 no.1
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    • pp.81-93
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    • 2003
  • This study was conducted to analyze working mother's affectionate and authoritarian behavior according to social demographic variables, life satisfaction, self-esteem, and Job characteristics. Questionnaires were developed and administered to 152 working mothers with 5th and 6th emementary school graders in Gwangju City. The results of this study can be summarized as follows : First, there was no significant differences in working mothers' child-rearing behavior according to social demographic variables. Second, affectionate behavior showed a significant difference according to all sub-factors of self-esteem, and authoritarian behavior showed a significant difference only in moral behavior and self-value. Third, there was a significant difference in both child-rearing behavior according to life satisfaction of working mothers. Fourth, according to job-related variables, there was a significant difference in the affectionate behavior, but not in the authoritarian behavior. Fifth, moral behavior and self-value had significant positive influencies on mother's affectionate behavior, and life satisfaction had negative influencies on authoritarian behavior.

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Effects of Job Participation on Intention to Leave among Physicians Working in Public Health Center (보건소 근무 의사의 업무 참여가 이직의도에 미치는 영향)

  • Song, Hyunjong;Cho, Hyong Won;Lee, Sok-Goo;Park, Hyunkyung
    • Health Policy and Management
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    • v.26 no.3
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    • pp.219-225
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    • 2016
  • Background: Intention to leave was an important managerial issue among physicians working in public health centers. This study was conducted to explore the relationship between job participations and intention to leave among physicians working in health centers. Methods: A cross-sectional questionnaire survey was conducted to gather information about job participation, intention to leave and demographics among physicians (n=243) in public health centers in Korea. Job participation was measured by 15 items categorized 3 dimensions. Multiple regression analysis was performed to determine the effect of job participation on intent to leave among physicians working in public health center. Results: Participation of medical treatment and administrative job were significantly associated with intention to leave adjusted for sex, age, income, working area, working duration, tenure, and overall job satisfaction. Therefore, physicians who actively participated in administrative job showed a lower turnover intention. Physicians who actively participated in medical treatment job had a higher quit intention. Conclusion: To retain qualified physicians in public health center, education should be reinforced to physician for administrative capacity building.

Subjective symptoms and risk assessment of musculoskeletal disorders of the dental hygienists (치과위생사의 근골격계질환 자각증상 및 위험도 평가)

  • Kim, Jung-Hee;Yoo, Wang-Keun
    • Journal of Korean society of Dental Hygiene
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    • v.12 no.1
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    • pp.67-79
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    • 2012
  • Objectives : The study was carried out to find out the experience of musculoskeletal disorder symptoms of dental hygienists and evaluate the risk with ergonomic evaluation method(RULA). Methods : The subjects in this study were 344 dental hygienists working at dental clinics and general hospitals in Seoul, Gyeonggi, Daejeon and Chungnam/Chungbuk. The data were collected through the self-questionnaire survey from July 26th 2010 to September 30th 2010. Results : The results showed that those who working at dental hospital, network dental clinics, with 1-5 years of clinical experience, long working hour and sitting hour, no rest hour, more physical and mental burden had higher rate of the experience of musculoskeletal disorder symptoms compared with other groups. The final score of RULA evaluation results was 6 on average requiring continuous observation and urgent demand for work improvements. According to the result of RULA evaluation by work, the orthodontic clinics were 4.5, prosthodontic clinics were 5.0, and dental surgery clinics were 6.8 being the most risky. Conclusions : The study showed high complaints rate on musculoskeletal disorders in dental hygienists. Thus, various measures including provision of proper working and rest hours, use of ergonomic working equipments, strengthening the health education for desirable working posture and the development of musculoskeletal disorder prevention program should be needed.

A Study on Working Attitude by Family Nursing Intervention (가족간호중재에 따른 근로자의 업무수행 태도)

  • Kim, Yang Ja
    • Korean Journal of Occupational Health Nursing
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    • v.4
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    • pp.39-47
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    • 1995
  • In order to investigate the effects of family nursing intervention on workers' working attitude, the questionnaire survey was carried out on 31 workers who had experienced family nursing intervention and 31 workers who did not have experienced family nursing intervention. The structured questionnaire was constituted of 3 parts of the workers' working attitude, job satisfaction, interpersonal relationship and creativeness. The results were as follows ; 1. Mean score of working attitude for post-intervention was significantly higher in the intervention group(3.48) than in the control group(3.03). However, there was no significant difference that for pre-intervention between two groups. 2. Mean scores of the job satisfaction, interpersonal relationship and creativeness were significantly higher in the intervention group(4.12, 3.58, 4.06) than in control group(3.49, 3.09, 3.34) 3. The major contributing factor to the effect of family nursing intervention was sex(18.2%) and followed by nursing intervention(13.2%) in general. The major contributing factors were sex and working evaluation records in post-intervention in job satisfaction(15.1%), and nursing intervention and sex in creativeness (39.2%).

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Beauty Shop Workers' Views of Job (미용사의 직무만족도와 직업관)

  • Oh, Ai-Ja;Nam, Chul-Hyun
    • The Journal of Korean Society for School & Community Health Education
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    • v.2 no.1
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    • pp.67-84
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    • 2001
  • This study was conducted to examine beauty shop workers' views of job. Data were collected from the workers in Seoul, Daegu, Pohang, Junjoo, and Kimhae from June 1, 2000 to August 31, 2000. The results of this study are summarized as follows. 1. According to general characteristics of the subjects, 28,7% of them was female; 94.2% 'specialized in hair'; 46.4% 'below twenty nine years old'; 47.1% 'married'; 59.7% 'highschool graduate'; 33.9% 'worked for below three years'; 28.5% 'monthly income of five hundred thousand to nine hundred ninety thousand won'; 62.3% 'working for above twelve hours a day' ; 41.0% 'above five workers' ; 40.6% 'working in city'. 2. 54.8% of the respondents thought that they were in good health. 76.3% of them smoked and 54.8% drank. 62.8% of them did not exercise and 78.7% was under stress. 61.5% responded that they chose the job because of its possibility of professional vocation. 91.0% of them obtained the beauty skill from beauty schools. 3. Among the factors which influenced job satisfaction, 'stable job and life security' was highest(43.9%), while 'interest in the job and amount of pay' was lowest(3.2%). 'Personal ability and use of originality' was 19.4% and 'harmonious relationship with fellow workers' was 18.1%. 'Job environment' was 7.1% and 'harmonious relationship with higher workers' was 4.5%. 4. The level workers' view of job was $113.8{\pm}17.3$ points on the basis of 150 points. On the basis of 75 points, each item showed it points in order of self-development($22.3{\pm}3.8$), service for customers($20.1{\pm}3.1$), vocational mission($15.6{\pm}3.1$), harmony with the others($18.9{\pm}3.5$), working environment($18.6{\pm}3.6$), and working condition($14.3{\pm}5.1$). 5. Among the reasons why they considered leaving the job, 24.0% of them considered it because they could not free time, while 15.4% considered it because undesirable living environment or long distance from home. 15.0% thought it because they could not receive proper treatment as much as they worked and 12.8% thought they overworked. 6. When they move into new working places, they consider such factors as good working environment(24.1%), good place to open their own beauty shops(16.7%), good beauty shop to learn beauty skill(15.6%), chance to have job training(9.5%), and close place from home(9.0%). 7. 40.6% of the respondents wanted to leave the job, while 32.3% of them did not want to leave the job. The intention of leaving the displayed significant difference in the variables of age, working period, monthly income, marital status, the number of workers, location of the shop, rank, and reason of selecting the job. 8. According to the results of a regression analysis of factors which influenced job satisfaction, it was affected significantly by intention of leaving job, the number of workers, health condition, level of stress, and monthly income. The beauty shop workers showed low satisfaction level with working environment, working condition, and working mission, They considered leaving the job because of lack of free time, overwork, poor working environment, improper treatment, etc. Therefore, related professionals and organizations must device adequate measures in order to make them work with pride as creators of beauty.

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Effect of passive ultrasonic agitation during final irrigation on cleaning capacity of hybrid instrumentation

  • Vinhorte, Marcilene Coelho;Eduardo Hideki, Suzuki;Maira Sousa, De Carvalho;Andre Augusto Franco, Marques;Emilio Carlos Junior, Sponchiado;Lucas Da Fonseca Roberti, Garcia
    • Restorative Dentistry and Endodontics
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    • v.39 no.2
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    • pp.104-108
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    • 2014
  • Objectives: To evaluate the effect of passive ultrasonic agitation on the cleaning capacity of a hybrid instrumentation technique. Materials and Methods: Twenty mandibular incisors with mesiodistal-flattened root shape had their crowns sectioned at 1 mm from the cementoenamel junction. Instrumentation was initiated by catheterization with K-type files (Denstply Maillefer) #10, #15, and #20 at 3 mm from the working length. Cervical preparation was performed with Largo bur #1 (Dentsply Maillefer) followed by apical instrumentation with K-type files #15, #20 and #25, and finishing with ProTaper F2 file (Denstply Maillefer). All files were used up to the working length under irrigation with 1 mL of 2.5% sodium hypochlorite (Biodyn$\hat{a}$mica) at each instrument change. At the end of instrumentation, the roots were randomly separated into 2 groups (n = 10). All specimens received final irrigation with 1 mL of 2.5% sodium hypochlorite. The solution remained in the root canals in Group 1 for one minute; and ultrasonic agitation was performed in Group 2 for one minute using a straight tip inserted at 1 mm from working length. The specimens were processed histologically and the sections were analyzed under optic microscope (x64) to quantify debris present in the root canal. Results: The samples submitted to ultrasonic agitation (Group 2) presented significant decrease in the amount of debris in comparison with those of Group 1 (p < 0.05). Conclusions: The hybrid instrumentation technique associated with passive ultrasonic agitation promoted greater debris removal in the apical third of the root canals.

A Study on Real Time Working Path Control of Vertical Articulated Robot for Forging Process Automation in High Temperature Environments (고온 환경 단조공정 자동화를 위한 수직다관절 로봇의 실시간 작업경로 제어에 관한 연구)

  • Jo, Sang-Young;Kim, Min-Seong;Do, Ki-Hoon;Han, Sung-Hyun;Ha, Un-Tae;Shim, Hyun-Suk;Lim, Chang-Sik
    • Journal of the Korean Society of Industry Convergence
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    • v.20 no.1
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    • pp.34-48
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    • 2017
  • This study proposes a new approach to control a trajectory control of vertical type articulated robot arm with six revolution joints by computed torque method for manufacturing process automation. The proposed control scheme takes advantage of the properties of the fuzzy controllers. The proposed method is suitable to control of the trajectory and path control in cartesian space for vertical type articulated robot manipulator for forging manufacturing process automation. The results is illustrated that the proposed fuzzy computed torque controller is more stable and robust than the conventional computed torque controller. This study is included with an analytical methodology of inverse kinematic computation for 6 DOF manipulators. And an intelligent PID based on feed forward fuzzy control structure is applied to control the working path control with disturbances caused by uncertainty parameters of the manipulator dynamic model. Lastly, the validity of proposed is verified by simulations and experiments.

Nurses' Perception of Flexible Working and Its Operational Guideline (간호사의 시간선택제 근무에 대한 인식과 근무방안)

  • Kim, Miyoung;Kim, Eunjung;Choi, Sujin
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.17 no.1
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    • pp.664-675
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    • 2016
  • The purpose of the study was to explore the nurses' perception of flexible working and present an operational guideline for implementation. The data were collected from a survey of 532 nurses conducted from 10 February to 24 February, 2015, using simple random sampling. SPSS 21.0 was used to analyze the data. This study found that the demanding for shorter hour shifts was highest ($M=3.89{\pm}0.87$) and 242 participants (46.2%) intended to apply the shift, followed by a fixed night shift, fixed weekend shift, and 12 hour shift. The common reasons identified were the poor environment of shift work and the challenges of child care. The increased time for personal development, relaxation activity to improve the quality of life and child care was highlighted and work-life balance was noted as a positive impact of flexible working. The negative impacts of flexible working were being likely to become temporary workers. These results can help establish uniform working conditions of nurses in the future by providing a standardized operational guideline as a precondition for reasonable compensation and working environment according to a flexible working pattern.

Children's Food Intake and Nutrition Levels, and Obesity by Maternal Employment: Based on the Korea National Health and Nutrition Examination Survey 2013-2015 (어머니 취업여부에 따른 자녀의 영양소 섭취 수준과 비만 유병률 비교 - 국민건강영양조사 자료(2013-2015년) 활용 -)

  • Kang, Geunyeong;Lee, Yoonna;UM, Mihyang;Kye, Seunghee
    • Korean Journal of Community Nutrition
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    • v.24 no.4
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    • pp.331-342
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    • 2019
  • Objectives: This study examines the intake of food and nutrients of children according to the employment and working hours of their mothers. Methods: The married women in the source data from the 6th National Health and Nutrition Survey were classified into full-time working mothers, part-time working mothers and housewives according to the working type and the data on their children from 3 to 18 years old were analyzed using SAS 9.4. Results: The group from 3 to 5 years old was the smallest group with 682 children (20.2%), followed by the group from 6 to 11 years with 1,345 children (39.8%) and the group from 12 to 18 years old with 1,355 children (40.1%). The lowest rates for having no breakfast and dinner were observed in the group with housewives (p<0.05). The calcium and phosphorous intakes were the highest in the group with housewives at 61.9% and 126.8%, respectively, and the lowest in the group with full-time working mothers at 54.7% and 115.3%, respectively (p<0.05). The group with full-time working mothers had the highest rate in the calcium and iron intake less than the dietary reference intake at 74.9% and 30.0%, respectively. It indicated that the group with full-time working mothers did not have sufficient nutrients as compared to the other two groups. Moreover, the group with the part-time working mothers showed the high vitamin A intake ratio of 41.4% (p<0.05). Conclusions: This study found evidence of a negative association between mother's employment status and children's diet quality. The employment and economic activity of married women will continuously increase in the future. Therefore, a national nutrition policy is required to provide quality nutrition care for children in the households.