• 공학교육연구
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• 제16권1호
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• pp.35-44
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• 2013

The purpose of this study is to develop an examination system for an e-learning quality manager's certificate which is composed of subjects, criteria, method of examination. The task model of e-learning quality manager was modify and task/knowledge/skill matrix was developed to design the examination system through conferences of DACUM committee and an advisory committee. And a survey was carry out to analyze validity of contents of the examination system. The major findings were as the follow: First, occupational specification, job specification, task specification and task/knowledge/skill matrix were developed. Second, examination subjects were developed based on task/knowledge/skill matrix, which were "Basis of e-Learning and plan of service", "Expulsion and management of e-learning infrastructure", "Development of e-learning contents", "Operation and evaluation of e-learning service". Third, the criteria and methods of examination for an e-learning quality manager's certificate were developed, which is composed of test type, the sum of test items, test time and acceptable standards.

• 산업경영시스템학회지
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• 제30권2호
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• pp.67-74
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• 2007

The objective of this research is to select the most effective technique among task related techniques(motion & time study, job redesign, physical environment improvement) for improving work efficiency in shipbuilding enterprise. This study consists of several principal steps. The first step is to design critical criteria in evaluating work efficiency in ship-building enterprises. The second step is to develop sub-criteria of the critical criteria. The third step is to develop a four level AHP(Analytic Hierarchy Process) structure using the critical criteria, sub-criteria and techniques among task related techniques. The fourth step is to develop the pairwise comparison matrix at each level of AHP structure, which was based on survey data collected at the H heavy industry. And the last step is to select the most effective technique among task related techniques using AHP analysis. The result of AHP analysis has shown clear difference in priority among task related techniques in terms of work efficiency of the shipbuilding enterprise: The reduction of normal time is more important than the reduction of allowance time in improving of the work efficiency. Motion & time study is the most important technique for the reduction of normal time, and physical environment improvement is the most important technique for the reduction of allowance time as well.

• 간호행정학회지
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• 제17권1호
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• pp.106-114
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• 2011

Purpose: This study was done to examine effects of task performance style, communication ability and their interaction on problem-solving ability and nursing competency of nursing students participating in a nursing management practicum. Methods: The study was a non-equivalent control group non-synchronized design. Participants were 56 fourth year nursing students (25 in the cooperative task group and 31 in the individual task group) and data were collected from March to September 2010. Additionally, two groups were classified based on communication ability of students and four groups were classified by their task performance style and communication ability. Problem-solving ability and nursing competency were measured pre- and post-test and compared between groups. Data were analyzed using SPSS Windows 17.0 program. Results: Neither problem-solving ability and nursing competency were statistically significantly different according to task performance style. Nursing competency was statistically significantly higher in the high communication group compared to the low communication group. Problem-solving ability was significantly different among the four groups classified by task performance style and communication ability. Conclusion: Nursing educators may need to improve students' communication ability to improve nursing competency and also assign different tasks based on communication ability of nursing students to improve problem-solving ability.

• 정보처리학회논문지D
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• 제12D권7호
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• pp.1049-1064
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• 2005

내간형 시스템이 제공하는 기능이 다양해지고 그 구조가 복잡해짐에 따라, 이들 시스템을 설계하는 데에 객체 지향 설계 방법론이 널리 사용되고 있다. 객체로 설계된 시스템을 대상 하드웨어에서 수행시키기 위해서는 객체들로부터 태스크 집합을 유도해야 하는데, 여기에 몇 개의 태스크가 존재하며 각 태스크가 어떤 객체들로 도착한 어떤 이벤트를 처리하느냐에 따라 시스템의 응답성이 크게 좌우된다. 그럼에도 불구하고 객체와 태스크의 상이함 때문에 최적의 태스크 집합을 유도하는 것은 매우 어려운 일이며, 그로 인해 지금까지는 여러 태스크 집합을 반복적으로 시도해 보는 것이 보편적인 방법이었다. 본 논문에서는 이 문제를 해결하는 Scenario-based Implementation Synthesis Architecture(SISA)를 제안한다. SISA는 객체로 설계된 시스템에서 태스크 집합을 유도하는 방법, 그리고 이를 지원하는 개발 도구와 런타임 시스템 아키텍처를 총칭한다. 이를 이용하여 개발된 시스템은 가능한 적은 개수의 태스크들로 이루어져 있으면서도 시스템의 각 이벤트에 대한 응답 시간이 최소임이 보장된다. 우리는 UML 2.0을 모델링 언어로 사용하는 개발도구인 ResoRT를 확장하여 SISA를 구현했으며, 기 개발된 산업용 PBX(사설교환기) 시스템에 이를 적용했다 이 시스템의 성능 평가 결과, 지금까지 알려진 최선의 태스크 유도 방식을 이용하여 개발되었을 때에 비해 ,시스템의 최대 응답 시간이 평균 $30.3\%$ 단축된다는 것을 확인할 수 있었다.

• 대한인간공학회지
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• 제19권2호
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• pp.87-99
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• 2000

This study aims to examine a fuzzy logic-based human expert EMG prediction model (FLHEPM) for predicting electromyographic responses of trunk muscles due to manual lifting based on two task (control) variables. The FLHEPM utilizes two variables as inputs and ten muscle activities as outputs. As the results, the lifting task variables could be represented with the fuzzy membership functions. This provides flexibility to combine different scales of model variables in order to design the EMG prediction system. In model development, it was possible to generate the initial fuzzy rules using the neural network, but not all the rules were appropriate (87% correct ratio). With regard to the model precision, the EMG signals could be predicted with reasonable accuracy that the model shows mean absolute error of 8.43% ranging from 4.97% to 13.16% and mean absolute difference of 6.4% ranging from 2.88% to 11.59%. However, the model prediction accuracy is limited by use of only two task variables which were available for this study (out of five proposed task variables). Ultimately, the neuro-fuzzy approach utilizing all five variables to predict either the EMG activities or the spinal loading due to dynamic lifting tasks should be developed.

• 전자공학회논문지CI
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• 제40권4호
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• pp.222-231
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• 2003

디지털기술과 반도체기술의 발전은 모든 전자제품의 발전을 가지고 왔다. 특히 이동 통신과 컴퓨터의 발전은 전자제품은 물론이고 가전제품까지도 네트워크화와 고성능화를 가져오게 하였다 따라서 기존의 전자제품들이 단순제어와 독자적인 동작에서 벗어나서 복잡한 제어와 네트워크에 접속이 되며, 원격으로 조종되는 기능이 추가가 되어지고 있다. 따라서 내장형 기기(Embedded System)는 예전의 단일 Task의 단순 루프 제어 방식과는 달리 다중 Task의 실시간 처리가 필요하게 되었다. 이에 따라서 중·소형 기기에도 실시간 운영체제의 필요성이 대두되고 있다. 본 논문에서는 소형 내장형 기기를 위한 실시간 운영체제를 설계하고 구현하였다. 소형 내장형 기기는 자원과 CPU의 성능에서 한계가 있기 때문에 기존의 상업용 운영체제의 기능 중에서 가장 필요한 기능을 중심으로 구현하였다.

• 대한건축학회논문집:계획계
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• 제35권12호
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• pp.43-53
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• 2019

The construction industry has made great strides in the past decades by utilizing computer programs including CAD. However, compared to other manufacturing sectors, labor productivity is low due to the high proportion of workers' knowledge-based task in addition to simple repetitive task. Therefore, the knowledge-based task efficiency of workers should be improved by recognizing the visual information of computers. A computer needs a lot of training data, such as the ImageNet project, to recognize visual information. This study, aim at proposing building facade datasets that is efficiently constructed by quickly collecting building facade data through portal site road view and automatically labeling using deep learning as part of construction of image dataset for visual recognition construction by the computer. As a method proposed in this study, we constructed a dataset for a part of Dongseong-ro, Daegu Metropolitan City and analyzed the utility and reliability of the dataset. Through this, it was confirmed that the computer could extract the significant facade information of the portal site road view by recognizing the visual information of the building facade image. Additionally, In contribution to verifying the feasibility of building construction image datasets. this study suggests the possibility of securing quantitative and qualitative facade design knowledge by extracting the facade design knowledge from any facade all over the world.

• 대한안전경영과학회:학술대회논문집
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• 대한안전경영과학회 2006년도 추계공동학술대회
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• pp.415-426
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• 2006

Many technical and nontechnical issues hinder enterprise wide workflow management. The most significant technical issue is the inability to deal with the heterogeneity among users, workflow types, and WFMSs. Not all users demand the same workflow functionality, so user interfaces of different levels of sophistication are required. Because workflow types cannot always be fully predefined, they often need to be adjusted or extended during execution. Unlike relational database management systems, however, each WFMS often has differing workflow metamodels. This leads to incompatibility between WFMSs, making integration into an environment comprising many heterogeneous WFMSs a troublesome and sometimes impossible task. Current Workflow system consists mainly of Database system. It contains some problems like that the integration relationship among system processes cant be expressed properly. This research has been focused on two phases that should be considered in the Workflow system. First of all, the first phase is the analysis phase; one of its role is to figure out independent execution task unit(Workflow component). The second phase is design phase that provides with the framework to execute these task units actively. The Workflow component extraction method in the analysis phase uses a analysis method called C-C Net and, in the design phase, the architecture that makes the these Workflow component executed actively is provided. Through this research, each process is divided into a task unit and more effective Workflow system could be formed by executing these units actively. Current system layer calls task units, on the other hand, the Workflow system this research implemented provides with the architecture that places a layer between them that controls task units actively.

• 대한인간공학회지
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• 제31권1호
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• pp.41-48
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• 2012

Objective: Companies want to expand their business by providing their services at other devices and new services based upon existing services. Therefore, they look for building brand identity by providing same experience throughout devices and services. Background: Many services are available to use at multiple devices including mobile phones, tablet, personal computers, and televisions, thanks to proliferation of n-screen and cloud technology. Method: It was discussed that consistency, which emphasizes the regularity and has been one of essential aspects of user interface design, seems not effective to be applied to n-screen services, owing to different screen size, input and output peripherals, usage environment and users' attitude. Results: A new definition of same experience among different devices and services, called coherence, was introduced and abstraction levels of user interfaces were proposed as the denominator of defining coherence. Then types of users' task knowledge at each abstraction level were discussed with examples. Conclusion: This paper concluded by discussing design requirements for designing coherent user interfaces among devices and services.

• International Journal of Computer Science & Network Security
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• 제21권3호
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• pp.304-310
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• 2021

The paper presents problems of optimization of the synthesis of embedded systems, in particular Pareto optimization. The model of such a system for its design for high-level of abstract is based on the classic approach known from the theory of task scheduling, but it is significantly extended, among others, by the characteristics of tasks and resources as well as additional criteria of optimal system in scope structure and operation. The metaheuristic algorithm operating according to this model introduces a new approach to system synthesis, in which parallelism of task scheduling and resources partition is applied. An algorithm based on a genetic approach with simulated annealing and Boltzmann tournaments, avoids local minima and generates optimized solutions. Such a synthesis is based on the implementation of task scheduling, resources identification and partition, allocation of tasks and resources and ultimately on the optimization of the designed system in accordance with the optimization criteria regarding cost of implementation, execution speed of processes and energy consumption by the system during operation. This paper presents examples and results for multi-criteria optimization, based on calculations for specifying non-dominated solutions and indicating a subset of Pareto solutions in the space of all solutions.