• 한국전자거래학회지
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• 제1권1호
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• pp.141-157
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• 1996

Data sharing is a major challenge to implement CALS. STEP is the international standard for the product model data exchange among heterogeneous systems and plays a key role in CALS. Advances in computer networks are rapidly changing the product development processes. The network oriented modeling system premises to integrate design activities across the enterprise. To achieve goals of CALS 3-dimensional concurrent modeling that complies international standard is required since integrity and common perception of product data can be assured. This paper presents 3-dimensional concurrent geometric modeling on high speed network using STEP and methodologies.

• 한국수학교육학회지시리즈A:수학교육
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• 제24권2호
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• pp.74-104
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• 1986

This study aims at investigating the correlation between such variables as a child's family circumstance and personality and that of the child's mathematical ability. For the objects of the study five hundreds and sixteen students (male 273, female 243) were andomly selected from the fifth grade primary school students in the city of Seoul. For the tool of measure the investigation of Korean family circumstances with particular characteristics, the personality test by Chong Pom Mo and Kim Ho Kwon, and the intelligence test by Lee Sang Ro, Chin Whal Kyo and Pyon Chang Jin were employed. For the statistical analysis S. A. S. C., the statistical analysis package of KAIST was employed. The resutis of the test can be summarized as follows. The correlation between the variable of family Circumstance and that of mathematical alility 1) In case of the significance level 0.05 the education of the childs mother and the order of the child's birth have much to do with the perception speed. In case of the significance level 0.1 it makes some difference in the child's perception spead whether the clild's mother has a job or not. 2) In case of the significance level 0.05 the education of the child's father and mother, the father's job and the type of habitation have influence on the child's perception of space. 3) In case of the significance level 0.05 the education of the child's father and mother, the father's job, the order of the child's birth, the type of habitation, their religion, and their cultural, and economic standard have influence on the child's ability of inference. 4) In case of the significance level 0.05 the education of the child's father and mother, the father's job, the type of habitation, their religion and their cultural and economic standard have influence on the child's ability of calculation. 5) In case of the significance level 0.05 any variable of the child's family circumstance has nothing to do with the child's memory. In case of the significance level 0, 1 the type of family and the type of habitation have effect on the child's memory. 6) In case of the significance level 0.05 the education of the child's parents, the jobs of the parents, the type of habtation, their religion, and their cultural and economic standard have influence on the child's linguistic notion. The correlation between the variable of the child's personality and that of the child's mathematical ability 1) In regard to the priority of the variables influencing the child's perception speed, the child's discretion comes first in order, and then sociability and impulsiveness of the child. 2) The child's discretion has effect on the child's space perception. 3) The child's discretion has effect on the child's ability of inference. 4) In regard to the child's ability of calculation the child's discretion comes first in order, and then impulsiveness and sociability of the child. 5) The child's discretion has effect on memory. 6) The child's discretion has effect on the child's linguistic notion.

• 대한교통학회지
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• 제26권1호
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• pp.181-190
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• 2008

본 연구는 교통약자(어린이와 고령자)에 대한 보행속도 및 인지-반응을 포함한 보행특성에 관한 기초자료를 제공하고, 이와 같은 교통약자의 보행 특성을 반영한 보행 신호시간 모형을 개발하는 목적으로 수행되었다. 본 연구를 위하여 가상횡단보도를 이용한 현장조사를 실시하여 어린이 및 고령자의 보행특성에 관한 자료를 수집하였다. 자료를 분석한 결과 어린이가 고령자에 비해 보행속도가 높게 나타났고, 약 0.63 m/s, 0.57 m/s의 평균속도를 나타내었다. 그러나 인지-반응시간과 여유시간은 고령자가 어린이에 비하여 높게 조사되었다. 이와 같은 특성을 반영한 보행신호시간 산정모형을 개발하여 제시하였다. 개발된 모형에 대한 민감도 분석 결과 실제 보행행태에 적합한 결과를 얻었고, 이를 현재 사용되고 있는 경찰청 모형과 비교한 결과 대부분의 상황에서 현재의 모형보다 증가된 보행 신호시간을 제공하는 것으로 분석되었다. 본 연구결과는 향후 교통약자의 보행환경을 개선하는데 적용할 수 있고, 장기적으로는 교통약자의 이동성 증진에 기여할 것으로 판단된다.

• 한국식생활문화학회지
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• 제17권1호
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• pp.49-56
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• 2002

The purpose of this study was to analyze staff satisfaction with staff foodservice in hospitals. The study compared the hospital staff's expectations and perceptions of foodservice. The quality satisfaction values were indicated as the differences between their expectations and perceptions. The subjects were 643 hospital staff in 11 Daegu . Kyungpook hospitals. Written questionnaires were used to collect the data. The completion rate was 76.9%. There were 17 attributes for foodservice quality, which were divided by factor analysis into four main quality factors; sensory, nutrition, sanitation and service. The high expectation and low perception items on the expectation and perception grid were: seasoning of the meals, taste of the meals, variety of the menu, nutritional considerations, cleanliness of the dishes, and prompt handling of meal complaints. On all the attributes measured, expectations were higher than perceptions. The quality satisfaction values were all negative. There were highly significant(p<0.001) correlations between quality satisfaction and variety of the menu(r=0.783), nutritional considerations(r=0.770), prompt dealing with meal complaints(r=0.762), cleanliness of meals(r=0.689), and courtesy of employees (r=0.653). There is a need to improve taste, menu variety, nutrition, sanitation, speed of handling meal complaints, and courtesy.

• 한국인터넷방송통신학회논문지
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• 제9권4호
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• pp.129-138
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• 2009

TV방송에서의 문자그래픽(방송자막)은 영상정보에 대한 시청자의 이해를 돕고 프로그램의 가치를 높여주는 영상구성 요소로써의 역할이 확대되고 있다. 본 논문은 TV화면의 대형화와 영상의 고품질화에 적합한 글자 표현을 위해 방송문자의 글꼴, 크기, 색상, 이동속도 등 문자의 속성에 변화가 필요한 점을 찾고 그 개선 방법에 관한 연구이다. 논문에서는 이론적 고찰과 함께 전문가 그룹을 대상으로 한 델파이조사를 기반으로 TV화면의 분자가 지닌 제 특성요소와 시각적 인지도가 어떤 연관을 가지고 있는지를 고찰하고 OSMU(One Source Multi Use) 환경에서의 각 매체별 특성을 고려한 개선안을 제안한다.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2006년도 Asia Navigation Conference
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• pp.3-10
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• 2006

Recently it is coming to be hish reality on visual system in ship-handling simulator depending on the technical development of 3D computer graphics. Even with high reality, it is possible that visual information presented seafarers through screen or display is not equivalent to the real world. In docking maneuvering, visual targets or obstructs are sighted close to ship's operator or within few hundred meters, so it might be possible to affect visual information such as the difference between both eyes' and single eye's visual sight. Because it is not possible to perceive of very slow ship's movement by visual in case of very large vessels, so the Doppler Docking SONAR and/or Docking Speed and Distance Measurement Equipment were developed and applied for safety docking maneuvering. By the way, the simulator training includes the ship's maneuvering training in docking, but in Ship-handling Simulator and also onboard, there are some limitations of perception of ship's movement with visual information. In this paper, perception of ship's movement with visual system in Ship-handling Simulator and competition of performances of visual systems that are conventional screen type with Fixed Eye-point system and Mission Simulator. We got some conclusions not only on the effectiveness for visual system but also on the human behavior in docking maneuver.

• Physical Therapy Rehabilitation Science
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• 제10권2호
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• pp.124-133
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• 2021

Objective: In order to secure the right to walk for the weak, such as the disabled, this study aims to suggest ways to improve the pedestrian environment by identifying factors that cause obstacles to walking. Design: Data Analysis and Perception Survey. Methods: The questionnaire was conducted separately between users of personal mobility vehicle and non-users. A total of 207 effective questionnaires were collected, and the analysis analyzed the perception of personal mobility vehicle by conducting frequency analysis using SAS 9.4. The survey focused on basic information on respondents, walking conditions, understanding of personal mobility vehicle, awareness of pedestrian space passage and parking, and awareness of the possibility of securing pedestrian rights due to new regulations. Results: First, when moving a pedestrian path by personal mobility vehicle, it shall be limited to less than the walking speed of pedestrians. Second, the parking location of the personal mobility vehicle is located at the boundary of the pedestrian road and the lane. Third, pay a fair price to park in a pedestrian space. Conclusions: It is necessary to improve the system to strengthen the contents of education to take into account the safety of pedestrians in education on how to use personal mobility vehicle.

• 한국지능시스템학회:학술대회논문집
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• 한국퍼지및지능시스템학회 1998년도 The Third Asian Fuzzy Systems Symposium
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• pp.395-398
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• 1998

In this paper, a method for the improvement of learning speed and convergence rate was proposed applied it to physiological neural structure with the advantages of artificial neural networks and fuzzy theory to physiological neuron structure, To compare the proposed method with conventional the single layer perception algorithm, we applied these algorithms bit parity problem and pattern recognition containing noise. The simulation result indicated that our learning algorithm reduces the possibility of local minima more than the conventional single layer perception does. Furthermore we show that our learning algorithm guarantees the convergence.

• 한국산업융합학회 논문집
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• 제17권2호
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• pp.69-76
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• 2014

This paper proposes a new approach to the design of cruise control system of a mobile robot with two drive wheel. The proposed control scheme uses a Gaussian function as a unit function in the fuzzy neural network, and back propagation algorithm to train the fuzzy neural network controller in the framework of the specialized learning architecture. It is proposed a learning controller consisting of two neural network-fuzzy based on independent reasoning and a connection net with fixed weights to simply the neural networks-fuzzy. The performance of the proposed controller is shown by performing the computer simulation for trajectory tracking of the speed and azimuth of a mobile robot driven by two independent wheels.

• 대한인간공학회:학술대회논문집
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• 대한인간공학회 1997년도 춘계학술대회논문집
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• pp.107-113
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• 1997

In this paper, an interfacing method to control rehabilitation assitance system with bio-signal is proposed. Controlling with EMG signals method has certain advantage on signal-collecting, but has some drawbacks in the function resolution of EMG signals because data-processing process is not efficient. To improve function-resolution and to increase the efficiency of EMG signal interfacing with rehabilitation assistance system, Multi-layer Perception which is highly effective with static signal and hidden-Markov model for dynamic signal resolving are fused together. In proposed method. The direction and average speed of the rehabilitation assitance system are controlled by the trajectory control and estimation of the moving direction result from the fused model. From the experiment, proposed GMM and 2-level MLP hybrid-classifier yielded 8.6% perception-error rate, improving function resolution. New acceleration control method constructed with 3 nested linear filter produced continuous acceleration paths without the information of destination point. Thus, the mass output caused by non- continuous acceleration-deceleration was eliminated. In the simulation, the necessary calculation, in the case of multiplication, was reduced by 11.54%.