• Asia pacific journal of information systems
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• 제3권2호
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• pp.117-144
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• 1993

MIS researches involve, in particular, the problems of developing appropriate IS for given MIS environments and lay emphasis on identifying prominant IS characteristics pertaining to the system in issue. This study deals with the IS characteristics for the management task of "planning". It investigates empirically the impacts of IS characteristics, under a set of proposed hypotheses, with particular respect to users' information satisfaction and performance in carrying out the task of planning. Futhermore, it examines whether the IS characteristics have different effects depending on the planning modes on the part of IS users. Based on a group of hypotheses accepted, the IS characteristics for planning decision making are not only proposed according to planning modes: preactive, reactive and proactive, but also classified into six subsystem categories: input, process, ouput, storage, interface and communication. Finally, the implications of the findings are discussed.

• 한국IT서비스학회:학술대회논문집
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• 한국IT서비스학회 2007년도 추계학술대회
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• pp.479-484
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• 2007

Annual IT budget of major companies in South Korea is 44.7 billion Korean Won on average in 2007. A survey shows that among these companies, 58% of them had decided to increase the budget compared to that in previous year. In this study, we investigate relationship between IS investment goal and IS performance with moderating effect of process for IS infrastructure maintenance. For this purpose, we used a set of data with 271 responses gathered from manufacturing industry in 2006. Our results show that the relationship exists but varies across the task characteristics and there's no moderating effect. This finding implies that practitioners should be aware of that different goals need to be established based on task characteristics and more effort to harmonize the process with task activities is required to them.

• 제어로봇시스템학회논문지
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• 제7권11호
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• pp.927-932
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• 2001

When people write a character with a pen stably, proper compliance planning is necessary. In this paper, after investigating the property of character writing task, we propose a fundamental grasp model for character writing and also analyze compliance characteristics for effective character writing using multi-fingered hands. For this, the general stiffness relation of multi-fingered hand is firstly described. Next, we investigate the grasp configurations for grasping a pen and then, we analyze the conditions of the specified stiffness matrix in the operational space to successfully and more effectively achieve the given character writing task. Through the analysis, an effective grasp modeling for successful character writing is shown. And also, we conclude that the operational compliance characteristics should be properly planned for character writing, stably and precisely.

• Journal of Information Technology Applications and Management
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• 제29권5호
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• pp.13-25
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• 2022

The purpose of this study is to explore the factors that influence the purchase of AI speakers in China. We integrate the Unified Theory of Acceptance and Use of Technology (UTAUT) and Task-technology fit (TTF) model into one model and put forward assumptions. According to the characteristics of AI speakers, we selected 6 independent variables, such as Performance Expectation, Effort Expectation, Social Influence, Facilitating Conditions, Task and Technology-characteristics. The final impact on purchase behavior is evaluated through Task-technology fit and purchase intention. After counting 478 samples, through SPSS22.0 and AMOS analysis, hypotheses have been proved by strong experimental data, except facilitating conditions. These results also imply that improving the technical level of AI speakers and enhancing consumers' purchasing intention are the central line of marketing. Based on this, we put forward several suggestions to marketers, including strengthening the research and development of AI speaker technology, and building a circle of friends of AI speakers.

• The Journal of Korean Physical Therapy
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• 제35권3호
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• pp.64-70
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• 2023

Purpose: This study investigated the influence of attention-demanding tasks on gait and measured differences in the temporal, spatial and kinematic characteristics between young healthy adults and elderly healthy adults. Methods: We recruited 16 healthy young adults and 15 healthy elderly adults in this study. All participants performed two cognitive tasks: a subtraction dual-task (SDT) and working memory dual-task (WMDT) during gait plus one normal gait. Using the LEGSys+ system, knee and hip-joint kinematic data during stance and swing phase and spatiotemporal parameter data were assessed in this study. Results: In the elderly adult group, attention-demanding tasks with gait showed a significant decrease in hip-joint motion during the stance phase, compared to the normal gait. Step length, stride length and stride velocity of the elderly adult group were significantly decreased in WMDT gait compared to normal gait (p<0.05). In the young adult group, kinematic data did not show any significant difference. However, stride velocity and cadence during SDT and WMDT gaits were significantly decreased compared to those of normal gait (p<0.05). Conclusion: We determined that attention-demanding tasks during gait in elderly adults can induce decreased hip-joint motion during stance phase and decreased gait speed and stride length to maintain balance and prevent risk of falling. We believe that understanding the changes during gait in older ages, particularly during attention-demanding tasks, would be helpful for intervention strategies and improved risk assessment.

• 한국콘텐츠학회논문지
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• 제12권2호
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• pp.322-330
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• 2012

본 연구는 Hackman and Oldham의 직무특성이론에 근거하여 대학생을 대상으로 자원봉사활동 직무특성이 활동만족도와 지속의지에 미치는 효과를 분석하였다. 이를 위해 강원도내 6개 대학의 대학생 261명을 대상으로 설문조사를 실시하여 자료를 분석하였다. 연구 결과 대학생의 자원봉사참가율은 평균 71.6%로 나타났으며, 자원봉사활동의 직무특성과 활동만족도, 지속의지는 중간값 보다 낮은 수준으로 나타났다. 자원봉사 활동만족도에 미치는 직무특성의 효과에서는 기술다양성과 과업정체성, 피드백이 유의한 수준에서 영향을 미치는 것으로 나타났고, 지속의지에 대해서는 자율성을 제외한 기술다양성, 과업정체성, 과업중요성, 피드백 모두가 영향을 미치는 것으로 나타났다. 또한 상관분석을 통해 자원봉사 활동만족도가 높으면 지속의지 역시 높아지는 것을 알 수 있다. 따라서 자원봉사관리자는 자원봉사활동의 직무를 직무특성이론에 기초하여 설계(design)함으로써 의미충만감이나 책임감, 결과의식을 높여서 최종적으로는 자원봉사를 통한 동기부여와 성과 향상으로 이어져야 할 것이다.

• The Journal of Korean Physical Therapy
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• 제27권5호
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• pp.292-298
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• 2015

Purpose: The purpose of this study was to examine the effects of dual tasks on balance and postural control during standing in patients with cerebellar ataxia (CA). It was hypothesized that CA patients would exhibit different sway characteristics of the center of mass (COM) depending on the complexity of the secondary cognitive tasks compared with normal control subjects. Methods: A total of 8 patients with CA and age-matched healthy control subjects participated in this study. They were instructed to perform two balance tasks (non-dual and dual movement) with 3 different complexity of dual tasks. Range, variability, and velocity of COMs were measured. Results: According to the results CA patients showed deficits in balance and postural control with increased dual-task complexity during the static balance task in saggital sway movements. However, there was no significant difference in static balance in frontal sway. With higher difficulty in the cognitive task, CA patients took longer to stabilize their body center, while normal control subjects showed no change between conditions. In addition, CA patients had a greater COM resultant velocity during recovery in the dual-task condition compared with the single-task condition. These findings indicate that CA patients had defendable compensatory strategies in performing dual tasks. Conclusion: In conclusion, CA patients appeared to manage the priority to balance and postural control. Particularly in a situation with a postural threat such as when potential consequences of the loss of stability increase, they appeared to prioritize the control of balance and posture over the performance of the secondary task.

• 한국직업건강간호학회지
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• 제27권1호
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• pp.59-66
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• 2018

Purpose: This study aimed to identify the effect of role conflict, self-efficacy, and resilience on the nursing task performance of emergency department (ED) nurses. Methods: Data were collected from 140 ED nurses working in 6 general hospitals, using self-reporting questionnaires. Data were analyzed using SPSS 23.0, and the analyses included descriptive statistics, a t-test, an ANOVA, the Pearson's correlation coefficient test, and a stepwise multiple regression. Results: Nursing task performance differed significantly in terms of the following general characteristics of the participants: age, marital status, total clinical experience, clinical experience in the ED, and position at the hospital. Nursing task performance was positively correlated with role conflict, self-efficacy, and resilience. Self-efficacy, role conflict, clinical experience in the ED, and resilience were significant predictors of nursing performance, and they accounted for 36.9% of the variance. Conclusion: Self-efficacy was identified as the most significant factor affecting the nursing task performance of ED nurses. Therefore, it is necessary to develop programs to improve the self-efficacy of ED nurses.

• 한국수학교육학회지시리즈A:수학교육
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• 제62권3호
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• pp.363-380
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• 2023

본 연구의 목적은 초등학교 교사가 수학 교과서 과제를 수학적 모델링 과제로 변형하는 과정에서 경험하는 어려움과 수학적 모델링 과제 개발을 위한 지식 변화의 사례를 분석하는 것이다. 이를 위해 10년 경력의 초등교사가 교사연구공동체의 반복적인 논의에 참여하면서 초등학교 5학년 수학의 자료와 규칙성 영역 중 평균 지도를 위한 과제를 수학적 모델링 과제로 변형하였다. 연구결과, 첫째, 교사는 과제 변형 과정에서 현실성의 반영, 수학적 모델링 과제의 적절한 인지적 수준 설정, 수학적 모델링 과정에 따른 세부 과제의 제시에 어려움을 겪었다. 둘째, 반복된 과제 변형을 통해, 교사는 학습 내용과 학생의 인지적 수준을 고려한 현실성 있는 과제의 개발, 과제의 복잡성 및 개방성 조정을 통한 과제의 인지적 수준 조정, 학생의 과제 해결 과정에 대한 사고실험을 통한 수학적 모델링 과정에 따른 세부 과제의 제시를 수행할 수 있었으며, 이는 수학적 모델링의 개념과 과제의 특징 등 수학적 모델링 과제 개발을 위해 요구되는 교사 지식이 향상되었음 보여준다. 본 연구결과는 향후 수학적 모델링 교사교육과 관련하여, 교과서 과제 변형을 통한 수학적 모델링 과제 개발 역량 향상의 기회를 제공하는 교사교육, 수학적 모델링의 이론 및 실제를 결합한 교사교육, 교사연구공동체에의 참여를 통한 교사교육이 필요함을 보여준다.

• 대한정형도수물리치료학회지
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• 제19권1호
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• pp.21-31
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• 2013

Background: The purpose of this survey is to determine the job and task satisfaction of physiotherapists. These are important factors because they are directly connected to both morale and work efficiency. Methods: Data was collected from March 9th, 2013 to April 15th, 2013 using self-administered questionnaires. First, Cronbach Alpha coefficient was used to evaluate date reliability. Further data analysis used mean and standard deviation to determine frequency and satisfaction for each characteristic. To determine the significance of job and task satisfaction, T-test and an analysis of variance were performed. Also, regression analysis was used to find out a relation between job satisfaction of physiotherapist and task satisfaction of orthopaedic physical therapy. Result: This survey includes results from 197 physiotherapists who engage in orthopaedic physical therapy from major, medium and small cities. The general characteristics of survey respondents include: 112 males (56.9%), 85 females (43.1%); 123 in their twenties (62.4%), 56 in their thirties (28.4%), and 18 over forty (9.1%); 156 had less than five years work experience in orthopaedics, 25 had six to ten years, and 16 had more than eleven years work experience. In the physiotherapist's job satisfaction survey (out of 5), males averaged 3.71 and females averaged 3.43. Individuals with less than five years in the career averaged 3.5, 3.69 for between 6 to 10 years in career, 3.87 for over 11 years in career; this showed a significant difference. Results of the sub-factors of job satisfaction were 3.81 for self-esteem and 3.21 for prospect of occupation. Results of task satisfaction in orthopaedic therapy showed a significant difference between 4.03 for males and 3.66 for females. For sub-factors of task satisfaction scores were 3.81 for vision, 4.29 for task adoption, and 3.57 for task recognition. Conclusion: Physiotherapists will be satisfied when their motivation to work and morale are increased by concerns such as improving the education environment, expert physiotherapist adoption issue, and medical law revision.