• Proceedings of the Korean Operations and Management Science Society Conference
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• 1991.10a
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• pp.376-376
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• 1991

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2011.10a
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• pp.173-175
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• 2011

In this paper, we present an user interface which can show some 3D objects at various angles using tracked 3d head position and orientation. In implemented user interface, First, when user's head moves left/right (X-Axis) and up/down(Y-Axis), displayed objects are moved towards user's eyes using 3d head position. Second, when user's head rotate upon an X-Axis(pitch) or an Y-Axis(yaw), displayed objects are rotated by the same value as user's. The results of experiment from a variety of user's position and orientation show good accuracy and reactivity for 3d visualization.

• Design & Manufacturing
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• v.12 no.2
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• pp.27-33
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• 2018

Korea's automobile industry, which has grown rapidly to become the world's fifth-largest automobile producer, To cope with environmental pollution and energy problems in order to prevail competitive edge in global market We are investing a lot of research personnel and costs. Among them, for realizing alternative light weight It is a part of the automobile module system that has achieved the technological development before the breakthrough in the injection molding process in the press process. Door module PNL was the subject of research. The door module PNL is expected to cause warpage before the mold production due to the thin and flat product characteristics and fiber orientation characteristic of the material. In this paper, CAE analysis and reverse correction tool Design. CAE analysis to obtain the results of weld line position, bending position and deformation value Through the correction tool, think3, the original product was modified before the mold production to improve the completeness of the parts. In fiber orientation, the position and size of the cooling channel in the mold, the position and size of the gate, Temperature, pressure, time, and work environment. Compared with the result of CAE analysis, the product that was reverse-corrected by Think3 was manufactured, and injection molding was performed. Injection molding products were tested 24 hours later. 3.5 mm to 7.0 mm, and under the fixed condition, the deviation was from 1.1 mm to 1.5 mm. Unlike the CAE analysis, the deviation of the actual injection pressure and the cooling temperature, the fiber orientation of the material, In order to solve this problem, it is necessary to compare the injection conditions with the database, I knew I had to catch the standard.

• Journal of Institute of Control, Robotics and Systems
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• v.7 no.6
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• pp.518-522
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• 2001

The main problem of the calibration of robots is to measure the position and orientation of a robot end effector. The calibration methods can be used as tool to improve the accuracy of robots without change of the arm or control architecture or robots. But such calibration methods require accurate measurements. Dynamic measurement of position and orientation provides a solution for this problem and improves dynamic accuracy by dynamic calibration of robots. This paper describes the development of the laser tracking system capable of determining the static and dynamic performance of industrial robots. The structure and systems components are presented and basic experimental results are included to demonstrated the instrument performance. The system can be applied to the remote controlled mobile robots as well s the calibration of robots.

• Tunnel and Underground Space
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• v.13 no.1
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• pp.33-43
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• 2003

Field investigations of the orientations of discontinuity planes inside the borehole for designing the underground rock structures have been depend solely on the borehole image-taking techniques. But, borehole image-taking has to be processed after the completion of drilling operation and also requires the handling of highly expensive apparatus so that practical application is very restricted. In this study Discontinuity Orientation Measurement (DOM) drilling system and discontinuity analysis model RoSA-DOM are developed to acquire the reliable information of rock structure by analyzing the characteristics of joint distribution. DOM drilling system retrieves the rock core on which the reference line of pre-fixed drilling orientation is engraved. Coordinates of three arbitrary points on the joint surface relative to the position of reference line are assessed to determine the orientation of joint plane. The position of joint plane is also allocated by calculating the location of core axis at which joint plane is intersected. Then, the formation of joint set is analyzed by utilizing the clustering algorithm. Total and set spacings are calculated by considering the borehole axis as the scanline. Engineering applicability of in-situ rock mass around the borehole is also estimated by calculating the total and regional RQDs along the borehole axis.

• Journal of the Korean Society of Physical Medicine
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• v.8 no.3
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• pp.337-342
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• 2013

PURPOSE: The Unilateral neglect is characterized by difficulty shifting attention to the side of space opposite the brain lesion and frequently reducing use of contralesional extremities. This study was to identify whether the visual deprivation was responsible for head position on unilateral neglect patient after stroke. METHODS: A patient with left middle cerebral artery infarction participated in the study. We assessed neglect using line bisection and star cancellation test. Patient was instructed to maintain correct alignment of trunk and head in a sit position. We evaluated degree of head lateral tilting and rotation. Then, patient was blocked visual input. Also, we evaluated head position in the same way. RESULTS: He scored 3 points in the line bisection test and 9 points star cancellation test. In postural evaluation, he had deviated posture such as lateral head tilting and rotation. After visual cue deprivation, patient showed different head position which was decreased degree of head tilting and rotation. CONCLUSION: For vertical body orientation, it was used multiple sensory references including the vestibular, somatosensory, and visual system. This finding suggested that abnormal posture of neglect patient could be related to the visual input. It has important clinical implications in terms of understanding the neglect.

• Journal of the Korean Society for Precision Engineering
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• v.16 no.12
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• pp.87-98
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• 1999

This study is concentrated on the development of real-time estimation model and vision control method as well as the experimental test. The proposed method permits a kind of adaptability not otherwise available in that the relationship between the camera-space location of manipulable visual cues and the vector of manipulator joint coordinates is estimate in real time. This is done based on a estimation model ta\hat generalizes known manipulator kinematics to accommodate unknown relative camera position and orientation as well as uncertainty of manipulator. This vision control method is roboust and reliable, which overcomes the difficulties of the conventional research such as precise calibration of the vision sensor, exact kinematic modeling of the manipulator, and correct knowledge of position and orientation of CCD camera with respect to the manipulator base. Finally, evidence of the ability of real-time vision control method for manipulator's position control is provided by performing the thin-rod placement in space with 2 cues test model which is completed without a prior knowledge of camera or manipulator positions. This feature opens the door to a range of applications of manipulation, including a mobile manipulator with stationary cameras tracking and providing information for control of the manipulator event.

• Proceedings of the KIEE Conference
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• 2003.07d
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• pp.2310-2312
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• 2003

This paper describes a navigation system for an autonomous vehicle in outdoor environments. The vehicle uses vision system to detect coordinates and DGPS information to determine the vehicles initial position and orientation. The vision system detects coordinates in the environment by referring to an environment model. As the vehicle moves, it estimates its position by conventional DGPS data, and matches up the coordinates with the environment model in order to reduce the error in the vehicles position estimate. The vehicles initial position and orientation are calculated from the coordinate values of the first and second locations, which are acquired by DGPS. Subsequent orientations and positions are derived. Experimental results in real environments have showed the effectiveness of our proposed navigation methods and real-time methods.

• Korean Journal of Acupuncture
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• v.37 no.1
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• pp.1-13
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• 2020

Objectives : To analyze the contents of ≪Lingshu·Jingjin≫ and study the standard posture in context of Korean Medicine. Methods : Analyzed the terms related to the name, body region and orientation of Three Yin and Three Yang used in ≪Lingshu·Jingjin≫ to deduce the standard posture of the description. ≪Lingshu·Jingmai≫ was used as supplementary data. Results : The term "Three Yin and Three Yang" in ≪Lingshu·Jingjin≫ is used to indicate regions of the human body, and based on this, terms with orientation were used. Just like 'anatomical position', there is a standard posture in Korean Medicine, and it may seem to be similar overall, but there is a difference in posture in the upper extremity. In ≪Lingshu·Jingjin≫, Greater Yang is the dorsal region, Lesser Yang is the lateral surface region, Yang Brightness is the anterior surface region of the human body. In the body trunk, Three Yin refers to the inner parts of the human body. However, in the lower extremity, Three Yin refers to the medial surface of the legs. The name of the individual Meridian-muscle was given following the region corresponding to Three Yin and Three Yang. In ≪Lingshu·Jingjin≫, there is a basic posture that became the standard posture derived from the description. In an upright standing position, the feet face forward, the fingers naturally extended, and the back of the hand faces outward. The fact that the posture of the thumb is naturally extended is especially reflected in ≪Lingshu·Jingjin≫. This is clearly different from the "anatomical position" and as it can be the base of all areas of acupuncture, it is suggested that it be defined as the "Standard Position of Acupuncture Medicine". Conclusions : Based on our analysis, we suggest the "Standard Position of Acupuncture Medicine" as an upright standing position, with the feet facing forward, the fingers naturally extended, the back of the hand facing outward, and the thumb naturally extended.

• Korean Journal of Occupational Health Nursing
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• v.21 no.3
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• pp.299-307
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• 2012

Purpose: This descriptive study attempted to identify the influence of internal marketing perception, empowerment, and job satisfaction on customer orientation of clinical nurses. Methods: The subjects were 411 nurses with over one year working experience in a university hospital, located in I-city. The data were collected from April 20 to 30, 2012. using a self-report questionnaire. The data were analyzed using hierarchical multiple regression with the SPSS/WIN 17.0 program. Results: There were significant differences in customer orientation depending on general characteristics(age, marital status, education, position, clinical experience, and department). Internal marketing perception, empowerment, and job satisfaction correlated with customer orientation. As the results of hierarchical multiple regression analysis for impact factors on nurses' customer orientation show, factors are the outpatient department in working places(${\beta}$=.10), education and training in internal marketing perception(${\beta}$=.12) and empowerment(${\beta}$=.44), which accounted for 31.1% of customer orientation. Conclusion: Therefore, nurse managers should identify the needs to perceive nurses as internal customers, and the internal marketing strategy should be performed to empower nurses. Also, it is needed to place nurses with high customer orientation at the outpatient department.