• 제어로봇시스템학회:학술대회논문집
• /
• 2003.10a
• /
• pp.1109-1114
• /
• 2003

In this paper, task control architecture is proposed for a mobile robot with behaviors based on cognition theory to endow the robot intelligence. In the task control architecture, task manager is introduced especially for the management of computational resource. The management is based on classical RMS (Rate Monotonic Strategy), but with online rate modulation strategy. The rate modulation is performed using the value variances of behavior execution for the task. Because the values are based on natively uncertain sensor information, they are modeled using PDF (probability Density Function). As a rate modulation process, the range of the rate modulation is defined firstly by real-time constraints of RMS and discrete control stability of behaviors. With the allowable range, rate modulations are performed considering harmonic bases to maintain utilization bound without decrease. To evaluate the efficiency of the proposed rate modulation strategy, a simulation test is performed to compare the efficiency between the control architecture with the proposed strategy and previous one. A performance index with the formalization of propensity of resource allocation is proposed and utilized for the simulation test. To evaluate the appropriateness of the performance index, the performance index is compared with practical one through a practical simulation test.

• Proceedings of the Korean Institute Of Construction Engineering and Management
• /
• autumn
• /
• pp.331-334
• /
• 2002

This study proposes a scheme for successful remodeling projects by establishing the task and role of project participants. In doing so, the study investigates the natures and problems of the current remodeling practices through interview and questionnaire survey with experts. This study establishes the critical phase of remodeling process and defines the task and role of project participants at each phase. The related documents of being generated at each phase also match up the task and role. It is expected that this scheme can be applied to deal with conflicts, cost overruns, and delays of time.

• Journal of Korean Academy of Nursing Administration
• /
• v.21 no.3
• /
• pp.287-296
• /
• 2015

Purpose: Purpose of the study was to investigate task performance, importance, knowledge, and level of job stress and job satisfaction of nurses working in a hospital with no family or family paid auxiliary caregivers. Methods: Participants were 119 nurses working in hospitals with no guardians. The questionnaire contained 488 items: general characteristics, performance, importance, knowledge of nursing tasks, job stress and job satisfaction. Data were analyzed using descriptive statistics and Pearson correlation coefficients with SPSS/WIN 21.0. Results: Most frequently performed nursing tasks were patient nursing management and information management. Nursing tasks perceived as most important were medication and transfusion and nursing tasks with the highest knowledge were also medication and transfusion. Nursing task (subcategory) most frequently performed was oral medication. Nursing task (subcategory) perceived as most important was mental status observation and nursing task (subcategory) with the highest knowledge was vital sign check. Nurses' job stress was significantly associated with job satisfaction. The mean scores for nurses' job stress and job satisfaction were low. Conclusion: The results indicate that nurses working in hospitals with no guardians perform daily living assistance services more often than previously, and nurses need to be prepared to do these tasks.

• Safety and Health at Work
• /
• v.12 no.2
• /
• pp.154-166
• /
• 2021

Background: Occupational health and safety (OHS) is a significant interest of all governments to prevent workplace hazards. Although appropriate legislation and regulations are essentials for the protection of workers, they are solely not enough. Application of them in practice should be secured by an efficient inspection system. Fundamental components of an inspection system are inspectors and their audit tasks. Maintaining the fair balanced task assignment among inspectors strictly enhances the efficiency of the overall system. Methods: This study proposes a two-phased goal programming approach for OHS inspectors' task assignments and presents a case study. Results: The solution approach gives the balanced assignment of inspectors to the workplaces in different cities of the country in the planning period. The obtained schedule takes into account the distances covered by the work places and the number of the workplaces' employees to be audited and pays attention to the human factors by considering the preferences of the inspectors. The comparisons between the obtained optimal schedule and the implemented one that is produced manually show that the approach not only maintains the technical requirements of the problem, but also provides social and physical balance to the task assignment. Conclusion: Both the approach and the application study are expected to offer fruitful inspirations in the area of safety management and policy and they provide a good guide for social policy and organizational aspects in the field of OHS inspectors' task assignment.

• International conference on construction engineering and project management
• /
• 2009.05a
• /
• pp.457-463
• /
• 2009

The earthwork is essential procedure for all civil engineering projects. Because of its importance in terms of cost and time, it should be managed effectively. In light of this, The Intelligent Excavating System (IES) research consortium has established to improve the productivity, quality and safety of current excavating/earthwork system by the Ministry of Land, Transportation and Maritime Affairs (MLTM) of Korea. This paper summarizes ongoing research aimed at development knowledge and presents a framework of task planning and visualization system for IES. The task planning and visualization system consists of three functions. 1) Using digital terrain model which created by 3D laser scanner, the system can divide it and generates global/local work area so that the excavator can work through the area. 2) In order to operate and/or control the excavator, the system exports the location, paths of boom, arm and bucket data of the excavator to control center. 3) The task planning system is visualized on the computer programming aided-graphic interface which simulates the planned work processes and eventually assists the operator for the control of the excavator. The case study which we have performed, demonstrates the effectiveness of the proposed system.

• The Korean Journal of Emergency Medical Services
• /
• v.5 no.1
• /
• pp.199-212
• /
• 2001

This research, aiming at analyzing the Emergency Medical Technicians' duties prior to establishing a baseline for question development in the national exams to qualify for the EMTs, investigated the importance and frequency per unit specified in the description with the EMTs to be subjects working on the task spot by means of questionnaires. The EMT duties were classified into 9 items like 1) the notification and response, 2) the scene size-up, 3) the patient assessment, 4) the emergency care, 5) the patient transport, 6) the duties at hospital clinics, 7) the operational management, 8) the receiving and responding to a call, 9) the self-development, and put the functional tasks into 52 items, describing the task elements into 177 items, and then questioned 112 EMTs working on the spot from July 21 through August 30, 2000, which showed the following results. 1) The distribution of subjects' career showed the highest rate with 33.9% for those who careered "less than a year", only 13.4% for those with more than 4 years and the highest rate with 43.8% for those who aged at 20-25. And 70.5% of all those who were questioned was the junior college graduates, 58.9% for those working at fire station and 29.5% working at hospital clinics. 2) Looking at the distribution of frequency and importance for each task element, questioning 'the patients main symptoms', 'accidental type', 'place of the patients identification' showed the highest rate in both frequency and importance in the field of "notification and response". 3) In the "scene size-up", identifying the patients showed the highest rate of frequency and importance, compared to other field of tasks, among which "identifying the patients' state" showed the highest rate of frequency (2.66) and importance (2.81). 4) In the "patient assessment", "identifying the patients" showed the high rate of frequency and importance in most elements of task, especially the importance showed the highest rate with 2.83 for the task of airway management and the cervical immobilization during "the primary assessment", and the frequency showed the highest rate for questioning the past case of the task of grasping the patients' history. 5) In the "emergency care", "the management of the heart attacked patients" and "the advanced cardiac life support" showed a high rate in the importance, whereas the frequency showed a very low rate. The high rate of frequency during the emergent task was the management of "musculoskeletal system injury patients" and of "the gastro-intestinal and urinary genital system injury patient support." In care of the patients with heart attack, the management of the airway showed the highest rate with 2.95, whereas the management of alcoholic abused patients and of dying patients, showed comparatively lower rate of assessment in the importance. The frequency of tasks showed the highest rate with 2.69 in the control of bleeding and the lowest with 0.47 in the management of abnormal delivery of child. 6) As to the patient transport, "the emergency transport" showed the highest rate with 2.74 and the unemergent transport with 2.55 in the importance, and the task importance at hospital showed the highest rate with 2.89 in managing the cardio-pulmonary resuscitation and with 2.60 in identifying the patient state. 7) Of all the tasks related with "operational task", the high importance was to "educate for the management of the first responder", but the frequency of tasks mostly showed a low rate and "receiving and responding to a call" showed relatively a high rate of importance and frequency. And related with "the self-development", "the health care management" and "the stress control" on working spot showed a high rate, but the frequency mostly showed a low rate.

• Proceedings of the Korean Institute of Building Construction Conference
• /
• 2002.11a
• /
• pp.123-131
• /
• 2002

Recently our government operates earned value management system (EVMS) for improving work management system of the construction projects over specific scale. The EVMS is based on the integrated management between construction cost and schedule, the existing systems, however, are focused on the cost management by using wort quantity. This study suggests a work management mode1 to integrate construction cost with activity information. The model introduces a work task concept as a tool that can connect construction cost to activity information. The suggested model in this study is verified by using actual data for the applicability to practical construction projects.

• Journal of the Korean Home Economics Association
• /
• v.31 no.3
• /
• pp.63-74
• /
• 1993

The purpose of this study is to consider mother's influence in married daughter in family resource management style, and efficiency and the related factors in it. The data were analyzed using frequencies, percentages, Mean, standard deviation, χ2-test, multiple regression analyses and hierachical regression. The following results were acquired: 1) The styles of the mothers' family resource management were in the rank of the seperated, the task-centered, the person-centered and the integrated. According to demographic variables, there was no significant difference, but there was, according to sex-role attitudes. 2) The styles of married daughters' family resource management were in the rank of the separated, the integrated, the person-centered and the task-centered. Among demographic variables, only level of education was significant. 3) Similarity was shown in the mothers' and their married daughters' family resource management styles. 4) The married daughter's efficiency of the management was influenced y accordance of residence, and her own management styles.

• Journal of the Korea Institute of Building Construction
• /
• v.2 no.4
• /
• pp.153-161
• /
• 2002

Recently our government operates earned value management system (EVMS) for improving work management system of the construction projects over specific scale. The EVMS is based on the integrated management between construction cost and schedule. the existing systems, however, are focused on the cost management by using work quantity. This study suggests a work management model to integrate construction cost with activity information. The model introduces a work task concept as a tool that can connect construction rest to activity information. The suggested model in this study is verified by using actual data for the applicability to practical construction projects.

• Asia pacific journal of information systems
• /
• v.10 no.3
• /
• pp.181-197
• /
• 2000

The purpose of this study is to confirm whether the fit between the task and the information characteristics makes any effects on the user satisfaction. The task is defined as two sub-constructs representing the degree of exception and analyzability. The information characteristics is divided into the degree of aggregation, scope and timeliness of information. User satisfaction was used as a surrogate measure of the performance of information systems. The computer self-efficacy was used to control any confounding effects. Field research method using questionnaires was employed to empirically investigate the relationship among the variables. Findings of the study are summarized as follows: the fit between the task and the aggregation of information and between the task and the scope of information turned out to have significant effects on information system performance. The implication of such results is that under highly exceptional or less analyzable task environment, less-aggregated or broad information is more appropriate.