• 한국HCI학회:학술대회논문집
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• 2009.02a
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• pp.52-55
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• 2009

With the recent development of virtual reality, it has been actively investigated to develop user interfaces for immersive interaction. Immersive user interfaces improve the efficiency and the capability of information processing in the virtual environment providing various services, and provide effective interaction in the field of ubiquitous and mobile computing. In this paper, we propose an virtual reality platform "My Workspace" which renders an 3D virtual workspace by using an immersive user interface. We develop an interface that integrates an optical see-through head-mounted display, a Wii remote controller, and a helmet with infrared LEDs. It estimates the user's gaze direction in terms of horizontal and vertical angles based on the model of head movements. My Workspace expands the current 2D workspace based on monitors into the layered 3D workspace, and renders a part of 3D virtual workspace corresponding to the gaze direction. The user can arrange various tasks on the virtual workspace and switch each task by moving his head. In this paper, we will also verify the performance of the immersive user interface as well as its usefulness with the usability test.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.16 no.6
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• pp.1325-1329
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• 2012

The current situation and problems of sensory console games was analyzed focusing on the Nintendo 'Wii.' In order to develop the limitation of contents that lean strongly towards sports and fail to offer diversity one step further into glocal cultural contents, a solution of applying 'Bollywood', which has a main musical format, is presented. Bollywood is a unique cultural code of India which can stimulate the purchase desires of consumers with its exotic freshness in third countries, and can be used to lead sales of a new form of game culture that is familiar yet in a new format in the 1.1 billion population Indian market. The political, social and economic codes of Bollywood are examined in this study in addition to cultural contents and codes that include Bollywood to develop contents that are not foreign to their culture.

• KIPS Transactions on Computer and Communication Systems
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• v.5 no.10
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• pp.303-310
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• 2016

Recently there has been growing popularity in exergame, such as Wii Sport or Xbox Fitness game, which enables users to get physical exercise while playing the games. In such experienced exercise games, the user's posture recognition is very important to find out exactly how much the users need to take their body posture as compared to the proper posture. This paper proposes a new exercise posture recognition model designed for the exercise game content for the elderly. The proposed model is based on extracting feature points of a skeleton model provided by the Kinect sensor to generate the feature vectors to recognize the user's exercise posture information. This paper describes the design and implementation of the exercise posture recognition model and demonstrates the feasibility of this proposed posture recognition model through a simple experiment. The experimental results showed 94.52% of average accordance rate for 12 exercise postures of 10 participants.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2016.05a
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• pp.791-793
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• 2016

In the development of various types of sensor technology, the general users smartphone, the environment is increased, which can be seen in contact with the movement recognition device, such as a console game machine (Nintendo Wii), an increase in the user needs of the action recognition-based input device there is a tendency to have. Mouse existing behavior recognition, attached to the outside, is mounted in the form of mouse button is deformed, the left mouse was the role of the right button and a wheel, an acceleration sensor (or a gyro sensor) inside to, plays the role of a mouse cursor, is to manufacture a compact, there is a difficulty in operating the button, to apply a motion recognition technology is used to operate recognition technology only pointing cursor is limited. Therefore, in this paper, using a MEMS-based motion-les Koguni tion sensor (Motion Recognition Sensor), to recognize the behavior of the two points of the human body (thumb and forefinger), to generate the motion data, and this to the foundation, compared to the pre-determined matching table (moving and mouse button events cursor), and generates a control signal by determining, were studied the generated control signal input device of the computer wirelessly transmitting.

• Convergence Security Journal
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• v.15 no.7
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• pp.63-68
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• 2015

In rapid aging society, the disease prevention and management for healthy life of the elderly is very important. Regular physical activity is known to be a useful intervention for the physical and mental health of the elderly. In this study, we explore the convergence contents using IT technology as the intervention for encouraging the regular physical activity in the elderly. There are u-Healthcare and serious game as the convergence of health care and IT technology, and the serious game which is added special purpose such as education, training, and treatment to the fun-one of the game element- can be suitable to provide a variety of contents that leads to physical activity in the elderly. The contents inducing physical activities are "Puffer(ATARI, USA)", "WiiFit(Nintendo, JAPAN)", "Age Invaders(MXR Lab, SINGAPORE)", "Xbox $360^{\circ}$+kinect(Microsoft, USA)", "Tangible bicycle game(Donsin Univ., KOREA)", and "3D Gateball game(Soongsil Univ., KOREA)", and these contents can help health care of the elderly. By increasing physical activity through the use of these contents, it will be able to promote physical fitness and body function required in daily life, disease prevention, and maintain health in the elderly.

• Physical Therapy Rehabilitation Science
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• v.8 no.1
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• pp.8-14
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• 2019

Objective: Degenerative knee arthritis is the most common disease that occurs in older people. Constriction-induced movement therapy (CIMT) has been reported to be as an effective treatment for the impairments, such as asymmetric weight-bearing and reduced balance that occurs after receiving a total knee replacement (TKR). Game-based rehabilitation training for persons with TKR is interesting and provides a variety of feedback. Design: Randomized controlled trial. Methods: Thirty-six subjects with TKR were randomly assigned to either the CIMT game training (n=12), general game training (n=12), or the control (n=12) group. Each group underwent twelve sessions (30 min/d, 3 d/wk for 4 weeks). In the CIMT game training group, the application of CIMT adjusted the weight of the pressure delivered from the two boards used in Wii games. In the general game training group, the game was played without adjusting the weight of pressure. The game training used the Wii Fit's Ski Slalom application. Subjects were assessed with the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) and the Activities-specific Balance Confidence (ABC) Scale. Results: All three groups showed significant improvements in pain, stiffness and physical function, total WOMAC scores, and ABC scores after the intervention (p<0.05). Significant differences were observed in physical function, total WOMAC scores, and ABC scores of the CIMT game training group compared with the other groups (p<0.05). Conclusions: The CIMT game training and general game training exhibited improvements on stiffness, but the CIMT game training exhibited a larger effect on lower extremity function and balance confidence levels.

• Physical Therapy Rehabilitation Science
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• v.7 no.4
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• pp.179-185
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• 2018

Objective: The purpose of this study was to analyze and compare vertical ground reaction forces during sit to stand (STS) and gait between female elderly and young individuals using the Wii Balance Board (WBB). Design: Cross-sectional study. Methods: Fifty-one female elderly people (age: $75.18{\pm}4.60years$), and 13 young people (age: $29.85{\pm}3.69years$) performed the five times STS test and gait respectively on the WBB. We analyzed time (s), vertical peak (%), integral summation (Int_SUM, %), and counter variables (%) in STS and 1st peak (body weight, BW%), 2nd peak (BW%), peak minimum (BW%), time (second), center of pressure (COP) path length (mm), and Int_SUM (BW%) in gait. The independent t-test was used to assess for differences in STS, gait ability, and general characteristics between the female elderly group and young adults group. With the first and last trials excluded, the mean value was obtained from the middle three of the five trials. Results: During STS, Int_SUM and time of young adults were significantly less than of the female elderly subjects. There were no significant differences in peak and counter variables. In gait, all variables (1st peak, 2nd peak, min, time, COP_path, and Int_SUM) showed significant differences between groups (p<0.05). This study demonstrated that the validity of vertical ground reaction forces occurring during STS and gait was significant in female elderly and young adults. Conclusions: Based on the measurement of vertical ground reaction forces in STS and gait using the WBB, it is possible to clinically improve the quality of geriatric physical therapy. Further studies are necessary to examine concurrent validity of elderly patients who have undergone total hip or knee replacement.

• Physical Therapy Rehabilitation Science
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• v.10 no.2
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• pp.161-166
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• 2021

Objective: The purpose of this study was to quantitatively evaluate the Wii Balance Board (WBB)-based jump performance for the elderly and to confirm the difference in jump performance according to age. Design: Cross-sectional study. Methods: 40 young adults (aged 22.5±2.2 years) and 33 elderly (aged 75.1±5.2 years) without orthopedics disease participated in this study. Standing on the WBB then, with the signal "start," jump vertically to the maximum height at which you can jump, land on the force plate after jump and keep it standing on both feet. All subjects were required to practice the jump sufficiently before starting the measurement, each measuring three times, and the mean values were used. A one-minute break was provided between each trial. Evaluators waited within 1meter for every test to prepare for fall. Results: The vertical ground reaction force of elderly and young adults when jumping using WBB showed a significant difference (p<0.05) and demonstrated discriminant validity. Between two groups, there were significant differences in overall jump time (p<0.05), maximum value (p<0.05), minimum value (p<0.05), center of pressure (COP) pathlength (p<0.05), and flight time p<0.05). Conclusions: This study found that performing the vertical jump, the elderly showed longer jump time, lower vertical ground reaction force, COP pathlength and shorter flight phase than healthy young adults using WBB and demonstrated that as a measurement tool, WBB discriminated vertical jump performance between elderly and young adults.

• Korean Security Journal
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• no.36
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• pp.139-176
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• 2013

It is believed that the Koryo dynasty era is the period which has very special meaning with regard to the history of the VIP guard system. The guard system in the early Koryo dynasty time focused on the official protection for kings and their families with absolute royal authority. On the contrary, the guard system in the late Koryo dynasty time, especially military regime period, conducted providing private protection for military rulers and increasing their power. The official guard troops named 2Gun6Wii became just perfunctory organizations at that time. That is the reason why this study develops the discussion only about the guard system of the early Koryo time. The official VIP guard organizations under the government structure of the early Koryo period were Naegoonbu, Byeongbu and Joongchoowon. This study particularly reviewed the Joongchoowon with thorough research. In the meantime, the guard organizations under the military chart of the early Koryo period were 2Gun6Wii, Gonghakgoon, Geonryonggun and so on. 2Gun consisted of ungyanggun and yonghogun. They were the royal bodyguards. This study especially tried to review the substance of the Gonghakgoon, Geonryonggun with different point of view from other theories. The Gumowwii, one of 6 Wii, conducted many official duties such as royal palace protection, capital city Gaesung defence, area patrols, criminal apprehension and disturbance prevention. It also accomplished crowd control and convoy mission at the streets to respond emergency cases while carrying out VIP protection roles for kings and Chinese diplomats. Many bibliographies verified that the Chunwoowii was the royal bodyguards which helped kings during state ceremonies and grand meetings held by kings. Consequentially, it is true that this study discovered, analyzed and evaluated various references and research materials related with the guard system. It is meaningful that this study newly reviewed the organizations and functions of the guard system as one structure.

• Journal of Navigation and Port Research
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• v.27 no.3
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• pp.345-349
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• 2003

A theme park is a tourism destination attracting a lot of tourists. Many local authorities establish theme parks within their own territory. Busan Metropolitan City tries to host an attractive theme park, and to make the city known as the tourism destination for 21st century. The purpose of this paper is to suggest a policy and management strategy of theme park based on questionnaire analysis for international tourists visiting Busan. First, it is needed to supply low land price to reduce construction cost and to attract investors from the public and private sectors. Second, the theme park has to have attractive themes and new events for repeaters. Third, infra structures related to the theme parks should be provided for the easy accessibility. Finally more emphasis should be placed on public relation and service education for employees.