• 제목/요약/키워드: task demands

검색결과 168건 처리시간 0.022초

직무스트레스와 근골격계 작업부담간의 연관성 분석 (A Study on the Association between Job Stress and Musculoskeletal Workload in the Manufacturing Industry)

  • 김상호
    • 대한인간공학회지
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    • 제28권4호
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    • pp.25-34
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    • 2009
  • A cross-sectional study was conducted to assess the association between musculoskeletal workload and psychosocial job stress variables from 100 employees from a cable making industry. It was found that the employees who had to do musculoskeletal hazardous tasks suffered higher psychosocial stress in 'decision latitude', 'job insecurity' and 'psychological job demands' also. The employees with higher level of psychosocial job stress in 'psychological job demands' and 'score of the "type A" personality' responded that they had higher 'physical job demands' from the task irrespective of its musculoskeletal hazardousness. These results confirm that musculoskeletal workload were associated with both physical and psychosocial work factors. Attention should be paid to psychosocial work factors along with physical workload to prevent musculoskeletal disorders in the manufacturing industries.

교사의 수업반성이 수학 수업에 주는 영향 - 수학적 과제의 인지적 수준을 중심으로 - (The Effect Of Teachers' Reflection For Mathematics Classroom Instruction - Focused on the cognitive demands of mathematical tasks -)

  • 이은영;이광호
    • 한국수학교육학회지시리즈C:초등수학교육
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    • 제18권2호
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    • pp.155-173
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    • 2015
  • 본 연구의 목적은 수학적 과제의 인지적 수준에 대한 교사의 수업반성이 수학 수업에 어떠한 영향을 주는지 분석하여 초등 교사의 수학 수업에 시사점을 제공하는 것이다. 이를 위해 수학 수업에서 과제 설정과 과제 실행단계 동안, 수학적 과제의 인지적 수준의 변화와 변화에 영향을 준 교실 요인을 분석하고, 이에 대한 수업반성을 거쳐 실시한 수학 수업에서 과제 설정과 과제 실행 단계동안, 수학적 과제의 인지적 수준의 변화 양상 및 변화에 영향을 준 교실 요인을 분석하였다. 그 결과, 수학적 과제의 인지적 수준이 쇠퇴했던 수학 수업이 수업반성을 통해 수학적 과제의 인지적 수준이 높게 유지하는 수학 수업으로 변화하였다.

간호근무환경, 조직문화유형, 업무의 양과 속도가 간호사의 감정노동에 미치는 영향 (Effects of Work Environment, Organizational Culture and Demands at Work on Emotional Labor in Nurses)

  • 이지윤;남혜리
    • 간호행정학회지
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    • 제22권2호
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    • pp.119-128
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    • 2016
  • Purpose: The purpose of this study was to investigate the relationship among work environment of nursing, nursing organizational culture, demands at work and the emotional labor in clinical nurses. Methods: A convenience sample of 241 registered nurses was obtained from two hospitals. Data were collected by a self-administered questionnaire during December, 2014. Data were analyzed using descriptive statistics, t-test, one-way ANOVA, Pearson correlations and multiple regression with SPSS/WIN 21.0. Results: The mean score for emotional labor was $3.36{\pm}0.48$, for work environment of nursing, $2.44{\pm}0.36$, and for innovational-orientation, $2.95{\pm}0.56$: Relation-orientation, $3.34{\pm}0.62$, Task-orientation, $2.95{\pm}0.53$, and hierarchy-orientation, $3.41{\pm}0.49$, The score for quantitative demands was $3.02{\pm}0.56$, and for work pace, $3.76{\pm}0.76$. In multivariate analysis, factors related to emotional labor were work environment of nursing, innovational-orientation and work pace. Conclusion: Findings from this study indicate the need to evaluate and improve the work environment for nurses to decrease emotional labor.

생물막 담체를 이용한 실험실 규모 $A_{2}O$공법의 시스템 변형에 따른 고도처리 성능 평가에 관한 연구 (The Study on Evaluating Performances of Lab Sacle-Advanced $A_{2}O$ with Changing System Using Biofilm Process)

  • 김민식;강구영
    • 상하수도학회지
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    • 제26권2호
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    • pp.209-218
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    • 2012
  • Recently, as reinforced water quality standards for wastewater has been announced, more efficient and more powerful wastewater treatment processes are required rather than the existing activated sludge process. In order to meet this demands, we evaluate Task 1-4 about lab scale $A_{2}O$ process using biofilm media. Task 1, 2, and 3 use 'Module A' which has 4 partitions (Anoxic/Anerobic/Oxic/Oxic). Task 4 uses 'Module B' which has 2 partitions including a denitrification reactor with an Inclined plug flow reactor (IPFR) and a nitrification reactor with biofilm media. The denitrification reactor of Module B is designed to be upward flow using IPFR. The result of evaluating at each Task has shown that attached growth system has better capacity of removal efficiency for organic matter and nitrogen with the exception of phosphorus. Task 4 which has the most outstanding removal efficiency has 90.5% of $BOD_{5}$ removal efficiency, 97.8% of ${NH_4}^{+}-N$ removal efficiency, 65% of T-N removal efficiency and 92% of T-P removal efficiency with additional chemical phosphorus removal system operated at HRT 9hr, Qi:Qir 1:2, and BOD/T-N ratio 2.7.

초등예비교사의 수학수업에서의 학습과제의 인지적 수준 분석 (An analysis on the level of cognitive demands of mathematical tasks set up by pre-service elementary school teachers)

  • 권성룡
    • 한국수학교육학회지시리즈C:초등수학교육
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    • 제18권2호
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    • pp.61-75
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    • 2015
  • 본 연구는 초등예비교사가 수학수업에서 활용한 과제의 특성을 살펴보았다. 이를 위해서 G교육대학교 3학년에 재학중인 2개반 학생들 중 4주간의 교육실습에서 수학수업을 배정받아 수업을 한 학생들 중 자신의 수업동영상, 수업계획서, 동영상 전사자료를 제출한 50명의 학생들을 연구대상으로 선정하였다. 수집된 자료를 바탕으로 예비교사가 수학수업시간에 활용한 과제의 출처, 과제의 수정여부, 수정방법, 과제의 인지적 요구 수준을 분석하였다.

펙인홀 작업을 위한 임피던스 제어 기반의 직접교시 및 재현 알고리즘 (Direct Teaching and Playback Algorithm for Peg-in-Hole Task using Impedance Control)

  • 김현중;백주훈;송재복
    • 제어로봇시스템학회논문지
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    • 제15권5호
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    • pp.538-542
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    • 2009
  • Industrial manipulators have been mostly used in large companies such as automakers and electronics companies. In recent years, however, demands for industrial manipulators from small and medium-sized enterprises are on the increase because of shortage of manpower and high wages. Since these companies cannot hire robot engineers for operation and programming of a robot, intuitive teaching and playback techniques of a robot manipulator should replace the robot programming which requires substantial knowledge of a robot. This paper proposes an intuitive teaching and playback algorithm used in assembly tasks. An operator can directly teach the robot by grasping the end-effector and moving it to the desired point in the teaching phase. The 6 axis force/torque sensor attached to the manipulator end-effector is used to sense the human intention in teaching the robot. After this teaching phase, a robot can track the target position or trajectory accurately in the playback phase. When the robot contacts the environment during the teaching and playback phases, impedance control is conducted to make the contact task stable. Peg-in-hole experiments are selected to validate the proposed algorithm since this task can describe the important features of various assembly tasks which require both accurate position and force control. It is shown that the proposed teaching and playback algorithm provides high positioning accuracy and stable contact tasks.

중등 수학 예비교사의 미분계수 과제 변형 (Pre-Service Secondary Mathematics Teachers' Modification of Derivative Tasks)

  • 김하림;이경화
    • 대한수학교육학회지:학교수학
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    • 제18권3호
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    • pp.711-731
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    • 2016
  • 본 연구에서는 중등 수학 예비교사가 교과서의 수학 과제(Mathematical task)를 어떻게 변형하는지 그리고 그 과정에서 예비교사들이 어떤 학습 기회를 가지는지 조사하였다. 이를 위하여 교과서의 미분계수 단원에서 과제를 선정하고 5명의 예비교사를 대상으로 과제 변형 활동을 실시하여 분석한 결과, 다음과 같은 결론을 얻을 수 있었다. 첫째, 과제는 인지적 노력 수준을 유지하거나 높이는 방향으로 이루어졌으며 이러한 경향은 예비교사들이 미분계수의 개념적 이해를 추구하는 가운데 나타났다. 둘째, 과제 변형 활동은 예비교사들에게 다양한 학습기회를 제공하였다. 예비교사들은 교육과정과 교과서의 의도를 파악하기 위해 노력하였고, 학생의 반응을 예측하는 것의 중요성을 알게 되었으며, 협업과 반성적 사고의 기회를 가졌다.

지연된 자극 제시가 실어증 환자의 문장 이해에 미치는 영향: 반응정확도와 반응시간을 중심으로 (The Effects of Increased Processing Demands on the Sentence Comprehension of Korean-speaking Adults with Aphasia)

  • 최소영
    • 말소리와 음성과학
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    • 제4권2호
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    • pp.127-134
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    • 2012
  • The purpose of this study is to present evidence for a particular processing approach based on the language-specific characteristics of Korean. To compare individuals' sentence-comprehension abilities, this study measured the accuracy and reaction times (RT) of 12 aphasic patients (AP) and 12 normal controls (NC) during a sentence-picture matching task. Four versions of a sentence were constructed with the two types of voice (active/passive) and two types of word order (agent-first/patient-first). To examine the effects of increased processing demand, picture stimuli were manipulated in such a way that they appeared immediately after the sentence was presented. As expected, the AP group showed higher error rates and longer RT for all conditions than the NC group. Furthermore, Korean speakers with aphasia performed above a chance level in sentence comprehension, even with passive sentences. Aphasics understood sentences more quickly and accurately when they were given in the active voice and with agent-first order. The patterns of the NC group were similar. These results confirm that Korean adults with aphasia do not completely lose their knowledge of sentence comprehension. When the processing demand was increased by delaying the picture stimulus onset, the effect of increased processing demands on RT was more pronounced in the AP than in the NC group. These findings fit well with the idea that the computational system for interpreting sentences is intact in aphasics, but its ability is compromised when processing demands increase.

"Narrating Rights: Literary Texts and Human, Nonhuman, and Inhuman Demands"

  • Kim, Youngmin
    • 영어영문학
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    • 제64권3호
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    • pp.483-530
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    • 2018
  • Unpacking and dispersing rights of various kinds formerly enjoyed by a selected few has been the constant motivation behind the democratization and modernization of human society. Human rights and later civil rights have continuously been constituted and reconstituted in response to the demands of the laboring class, slaves, women, subalterns, animals, and things, expanding beyond the boundaries of class, race, nation, sexuality, gender, species and organism. Calling attention to the ways in which literary and cultural texts have narrated rights so as to inscribe these human, nonhuman, and inhuman demands. Narrating rights offer opportunities to interrogate the lasting contributions of English language and literature to questioning, reforming, and practicing rights. The interrogation is particularly pertinent in this age in which revised and dispersed rights are creating new conflicts, requiring them to be narrated differently and imaginatively so as to allow all the parties in conflict to participate in working out the conflicts. With the 2017 theme of "Literature and Human Rights," JELL editorial collective hope to explore the relationship between literature and human rights in its multiple simultaneous, and plural manifestations in an open platform. "Narrating Rights" is a double-edged task that, on one hand, reflects the singular life conditions or contexts of a human, inhuman or nonhuman being and, on the other hand, aspires to the perpetual process of rights' universal application. Eleven out of all the keynote speakers at the 2017 ELLAK Convention were invited to this roundtable on Literature and Human Rights. The following transcription includes the dialogues of the eleven discussants.