• 한국실내디자인학회논문집
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• 제20권6호
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• pp.79-87
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• 2011

Spatial perception and spatial structure that focus on psychological effects produce a real force through the medium of space that can control human actions, even their psychology. The job of understanding the characteristics and effects of architectural spaces that recognize the relationship between architecture and human beings, including the psychological dimension, is an alternative search for quality spaces that can increase the mutual relationship between space and human beings. This paper introduces two propositions called "space" and "psychology" in order to discover a meta-pattern connecting space and the human mind with the aim of systematizing that internal network and establishing a new architectural system concerning space and human beings. This paper also proposes a method of accessing physical spaces that can affect psychological states through a conceptual substitution called "extension," with the aim of discovering the implications inherent in such extensive relationships and proposing a methodology of organizing psychological spaces based on the characteristics of that extensive connection. The means of extensively connecting psychological spaces were classified into the three categories of memory system, sensory system, and motor system, and their corresponding extensive connection characteristics called "simultaneous relativity," "non-mediated immediacy," and "purification process" were also derived. These characteristics accelerate the changes in psychological intensity and function as principles that organize psychological space.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1996년도 한국자동제어학술회의논문집(국내학술편); 포항공과대학교, 포항; 24-26 Oct. 1996
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• pp.1157-1160
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• 1996

Control of a biped robot which has compliant ankle joints is dealt in this paper. Simulated version of a human ankle joint is built using springs and mechanical constraints, which gives a flexibility of joint and compliance against the touching ground. The biped robot with compliant ankle joints proposed here gives a good contact between its sole and the ground and makes foot landing soft. As a result, installing force sensors for measuring the center of gravity of the biped becomes easier. A motor to drive an ankle joint is not needed which makes legs light. However, the control problem becomes more difficult because the torque of the ankle joint to put the biped in a desired walking gait cannot be provided from the compliant ankle joint. To solve this problem, we proposed a dynamic gait modification method by adjusting the position of a hip joint. Simulation results for the mathematical model of the SD-2 biped in the Ohio State University are given to show the validity of the proposed controller.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2001년도 추계학술대회 논문집 전기기기 및 에너지변환시스템부문
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• pp.230-232
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• 2001

The camera system we researched has two stepping motors for the pan and tilt operation, and the human face tracking algorithm. Recently, this kind of the camera is used in PC communication, telecommunication vision meeting and tele-lecture. This paper discusses the smooth speed control method of this camera when the face is moved to up, down, left and right direction. We used a mean shift algorithm for the face-tracking, proposed the speed control algorithm using a fuzzy logic and certified this characteristics with the experiment.

• 제어로봇시스템학회논문지
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• 제3권2호
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• pp.187-196
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• 1997

This paper presents a semi-automatic methodology to synthesize executable digital controller saftware in a multi-loop control system. A digital controller is described by a task graph and end-to-end timing requirements. A task graph denotes the software structure of the controller, and the end-to-end requirements establish timing relationships between external inputs and outputs. Our approach translates the end-to-end requirements into a set of task attributes such as task periods and deadlines using nonlinear optimization techniques. Such attributes are essential for control engineers to implement control programs and schedule them in a control system with limited resources. In current engineering practice, human programmers manually derive those attributes in an ad hoc manner: they often resort to radical over-sampling to safely guarantee the given timing requirements, and thus render the resultant system poorly utilized. After task-specific attributes are derived, the tasks are scheduled on a single CPU and the compiled kernel is synthesized. We illustrate this process with a non-trivial servo motor control system.

• Environmental Analysis Health and Toxicology
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• 제19권1호
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• pp.59-64
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• 2004

Metallothionein gene expression of diesel exhaust particles (DEP) was investigated in human lung epithelial cell line. DEP was collected from diesel motor bus and soluble fraction in water was obtained. Cells, grown to near confluence, were exposed to 5-50 ppm DEP for 6 hours. Regarding the metallothionein gene expressions, MT-1 and MT-2 were induced in the DEP-treated cell by using RT-PCR and real-time PCR. However, MT-3 which is known to be brain specific, and another isoform MT-4 were not expressed in cadmium-treated groups as well as control group. Heavy metal of DEP was also analyzed and Zn was found as the major component of heavy metals in DEP used in this study.

• Restorative Dentistry and Endodontics
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• 제28권1호
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• pp.34-40
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• 2003

Chewing simulator, which can partly mimic the motion of chewing motion of human, has been successfully developed. The purpose of its development was to make a new machine which can anticipate the clinical results of restoration in the human teeth more accurately in vitro condition It is composed of 4 major parts, chewing part, motor part, water bath, controlling part. The controlling part control the chewing force, frequency, the temperature and running time of water. Additionally, the actual chewing force and remaining time is shown in the monitor of controlling part. At present, the chewing cycle is composed depending on the pre-published data of foreign people. Long term clinical data should be additionally collected for the simulator to mimic the clinical results more accurately.

• International Journal of Advanced Culture Technology
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• 제7권1호
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• pp.209-215
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• 2019

In order to provide a safe free-weight-training environment to people without workout trainers, we suggest a smart bench press machine with an automatic weight control system sensitive to user tiredness. Physical weight plates on the machine are replaced with a hydraulic cylinder as a press load and the cylinder knob is coupled with a step motor to change its tensile force automatically in-between lifting exercises. Three subjects participated to verify the usability of the smart bench press machine. They were asked to lift a 6-RM press load 10 times with 3 different lifting conditions: 1) no assistance, 2) a human assistance, and 3) the automatic weight control. All subjects were not able to complete the 10 sets without assistance due to tiredness, but they finished the full sets under the two assistive conditions. Average lifting speeds under the automatic weight control condition showed the most consistent level. Normalized quasi-tension data based on surface electromyogram signals of both Pectoralis Majors revealed that the subjects maintained the target muscle activation level above 50% but not more than 80% throughout the 10 sets. Therefore, the smart bench press machine is expected to both keep pace with the lifting exercise and reduce risk of injuries due to excessive muscle tensions.

• 인간행동과 음악연구
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• 제16권1호
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• pp.47-72
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• 2019

본 연구는 자폐스펙트럼장애(ASD) 아동의 운동조절을 평가하기 위해 리드믹 운동과제를 포함한 국외 실험연구를 고찰하고 분석하고자 하였다. 이를 위해 ASD로 진단받은 아동과 신경학적 손상이 없는 대조군(TD)을 대상으로 하고 리드믹 탭핑, 리드믹 운동, 동기화 등 운동조절 관련 변인을 포함하고 있는 국외 실험연구를 선정하였다. 총 10개의 연구가 최종 선정되었고, 해당 연구에 포함된 운동조절 관련 변인과 사용된 청각 자극, 측정 방법 등을 분석하였다. 또한 ASD 아동과 TD 아동의 리드믹 운동과제 수행력 차이를 확인하기 위해 메타분석을 실시하였다. 연구 결과, 리드믹 운동과제를 통해 운동조절을 평가할 때 목표된 변인은 다섯 가지로 운동 타이밍 조절, 타이밍 재산출, 양손 협응, 동기화, 대인 간 동기화가 포함되었고, 각 과제는 움직임의 정확도(accuracy)와 정밀도(precision)의 측면에서 분석됨을 알 수 있었다. 또한 리드믹 운동과제 수행력과 사회기술 지표의 상관관계가 보고됨을 확인할 수 있었다. 메타분석 결과, ASD 그룹은 청각 자극에 맞추어 움직이다가 자극이 소거된 후에도 동일한 움직임을 지속하는 타이밍 재산출 지표에 있어서는 TD 그룹과 유의한 차이가 없는 반면, 외부 자극(청각적 큐나타인)에 동기화하고 움직임을 일관적으로 조절하는 데 있어서는 유의하게 낮은 수행 수준을 보이는 것으로 나타났다. 이러한 연구 결과는 리드믹 운동과제가 음악치료 임상 현장에서 ASD 아동의 운동조절뿐만 아니라 사회기술을 평가하는 효과적인 방안이 될 수 있음을 시사한다.

• Journal of Electrical Engineering and Technology
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• 제9권1호
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• pp.352-362
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• 2014

In this paper, a fuzzy logic controller is designed for a DC motor which can be used for navigation control of mobile robots. These mobile robots can be used for agricultural, defense and assorted social applications. The robots used in these fields can reduce manpower, save human life and can be operated using remote control from a distant place. The developed fuzzy logic controller is used to control navigation speed and steering angle according to the desired reference position. Differential drive is used to control the steering angle and the speed of the robot. Two DC motors are connected with the rear wheels of the robot. They are controlled by a fuzzy logic controller to offer accurate steering angle and the driving speed of the robot. Its location is monitored using GPS (Global Positioning System) on a real time basis. IR sensors in the robot detect obstacles around the robot. The designed fuzzy logic controller has been implemented in a robot, which depicts that the robot could avoid obstacle as well as perform its operation efficiently with remote online control.

• 대한물리의학회지
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• 제8권3호
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• pp.379-385
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• 2013

PURPOSE: This study is research about deep trunk muscles (DTM) that is important and serve to control the movement of the trunk to provide stability during movement for human. In this study, trying to prove a change of DTM of aging in the ultrasound image. METHODS: We measured via an ultrasound image during rest and contraction of DTM in 42 young and 48 old people, and then we measured the change of thickness and symmetry. RESULTS: Symmetry showed a significant difference only external oblique (EO) in the young(p<.05). In the elderly, it was found that ratio of contraction was greater transverse abdominis than EO. CONCLUSION: I considered it could lead to improvement of activity of daily life by applying intervention for recovery of motor control of TrA for the elderly in clinical practice.