• 제어로봇시스템학회논문지
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• 제10권9호
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• pp.755-762
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• 2004

In this research, EOG(Electrooculogram) signal was analyzed to predict the subject's intention using a fuzzy classifier. The fuzzy classifier is built automatically using the EOG data and evolutionary algorithms. An assistant robot manipulator in redundant configuration has been developed, which operates according to the EOG signal classification results. For automatic fuzzy model construction without any experts' knowledge, an evolutionary algorithm with the new representation scheme, design of adequate fitness function and evolutionary operators, is proposed. The proposed evolutionary algorithm can optimize the number of fuzzy rules, the number of fuzzy membership functions, parameter values for the each membership functions, and parameter values for the consequent parts. It is shown that the fuzzy classifier built by the proposed algorithm can classify the EOG data efficiently. Intelligent motion planner that consists of several neural networks are used for control of robot manipulator based upon EOG classification results.

• 경영과학
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• 제32권2호
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• pp.125-143
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• 2015

When studying the film industry, researchers have seldom addressed the dynamic interaction between marketing information and word of mouth in the motion picture industry mainly because of the limitation of traditional research methodologies. This study explores integration and competition among important variables influencing on audience's choice on movie selection, particularly by using a new method of agent-based modeling including competitive environment. Decision process of moviegoer composed of transition probability based on multinomial logit model, considering marketing and box-office information, critique, and word of mouth from other moviegoers. After validating the fitness of market share among released movies, this study conducted a set of simulation experiments considering several variables such as market size, change of weight between variables, and movie performance under competition. Propositions are derived from the simulation results is also suggested for future research.

• Structural Engineering and Mechanics
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• 제42권6호
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• pp.783-797
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• 2012

A new hybrid meta-heuristic optimization algorithm is presented for design of structures. The algorithm is based on the concepts of the charged system search (CSS) and the particle swarm optimization (PSO) algorithms. The CSS is inspired by the Coulomb and Gauss's laws of electrostatics in physics, the governing laws of motion from the Newtonian mechanics, and the PSO is based on the swarm intelligence and utilizes the information of the best fitness historically achieved by the particles (local best) and by the best among all the particles (global best). In the new hybrid algorithm, each agent is affected by local and global best positions stored in the charged memory considering the governing laws of electrical physics. Three different types of structures are optimized as the numerical examples with the new algorithm. Comparison of the results of the hybrid algorithm with those of other meta-heuristic algorithms proves the robustness of the new algorithm.

• 한국의류학회지
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• 제19권6호
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• pp.1008-1016
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• 1995

The purpose of this study is to examine the vest patterns with better fitness, function and beauty best suited to the bodies because the previous studies on the vest pattern are not enough to be usable for its making and wearing including the emperiment and practice as well as its direct design and cutting although its wearing range has been widely popular. This study was carried out by making the experimental vest and performing its wearing experiment. The result of this study is summarized as follows. 1. The sensory evaluation on apperance showed that the wholoe average of pattern 4 was the highest for all S, M, L bodies. In addition, it was shown by the bodies that the most suitable related patterns included pattern 4-M body, pattern 2-S body and pattern 4-L body. However, the L body indicated the lowest score in all patterns. Then, this fact means that the diversified studies must be carried out on the vest patterns for the bodies. 2. The results on the function of vertical motions indicated that when the motion angle increased the lifting volume of the vertical motion also increased proportionally, and that the motion at $135^{\circ}$ among these verical motions showed the highest score. Therefore, it is required to consider this fact when determining the vest length in the process of making the vest pattern. 3. The results on the twisted degree of a posture showed that as to the experimental results on these vertical motions the twisted degree increased with the increase of angle. This fact seems to be also important in deforming the vest length when making the vest.

• 한국융합학회논문지
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• 제11권10호
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• pp.355-361
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• 2020

스쿼트는 장소에 제약 없이 효과적으로 하체 근력을 증진시킬 수 있는 운동이다. 스쿼트 시 잘못된 자세로 인한 부상이 빈번하게 발생하고 있으며, 부상을 예방하기 위해서는 적절한 각도를 유지하며 운동하는 것이 중요하다. 본 연구에서는 허벅지에 착용된 단일 관성 센서 모듈을 이용하여 스쿼트 각도를 측정할 수 있는 시스템을 개발하고 검증하였다. 스쿼트 각도를 측정하기 위해 각 관성 센서(가속도 센서, 자이로 센서)의 장단점을 상호 보완 하는 상보필터 알고리즘을 사용하였고, 임상 실험을 통해 각 상보필터 계수에 따른 스쿼트 각도의 정확도를 평가하였다. 분석 결과, 최적의 상보필터 계수를 기반으로 계산된 스쿼트 각도는 측각기에서 측정한 각도와 상관 계수 0.623와 편향 오차 -5.6°로 유의한 상관관계를 보였다.

• 대한정형도수물리치료학회지
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• 제28권2호
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• pp.67-75
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• 2022

Background: Scapular winging is a rare disorder that is commonly caused by nerve damage of the dorsal scapular nerve, spinal accessory nerve, or the long thoracic nerve. This affects the scapulohumeral rhythm which may cause abnormal kinetic motion of the shoulder. The purpose of this case report is to describe a self-exercise oriented management incorporating shoulder strengthening to reduce symptoms in a shoulder pain patient with winging scapular. Methods: A 45 year old male patient complained of pain in his both shoulders without any trauma. Shoulders were treated with steroid injections for supraspinatus tendonitis, but although pain improved to some extent, pain and disability continued for 3 months. Both shoulders had pain, decreased active range of motions, muscles weakness, and scapular winging. The patient underwent 9 interventional sessions over 3 months and was managed mainly by self-exercise. The intervention method involved push up plus, sling, muscle strengthening, and stabilization exercises. Loads were increased as symptoms improved. Results: Clinical outcomes were measured at every session. Pain in both shoulders reduced to 0 on a numerical pain rate scale by the 4th session, and the active range of motion was fully recovered. During the 9th session, the strength of the serratus anterior had improved from grade P to G on the right side and grade G to N grade on the left. Conclusion: In this case study, the self-exercise program was effective in reducing pain, increasing active range of motion, and improving muscle strength in subjects with scapular winging.

• 대한간호학회지
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• 제30권5호
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• pp.1318-1332
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• 2000

The purpose of this study was to determine the effect of walk training on leg strength, flexibility, postural stability, balance and gait in home bound elderly women. Eighteen elderly women of the experimental group aged between 70 and 90 years image who have normal vision, hearing and Romberg test. They participated in the 12 week walk training. The subjects of the experimental group practiced walk training 3 times a week for during 12 weeks. During the 40 minute workout, the subjects practiced 5 minutes of warming-up exercises, 30 minutes of conditioning exercises and 10 minutes of a cool-down exercise. The intensity for the conditioning phase was determined by subject' heart rates, which ranged from 60% to 70% of age-adjusted maximum heart rates. The body composition, leg strength, flexibility, postural stability, balance and gait were measured prior to and after the experimental treatment. The body fat, lean body mass, leg strength (ankle dorsiflexor, plantarflexor, inversor and eversir, knee flexor, extensior), flexibility (range of motion of ankle dorsiflexion, plantarflexion, inversion and eversion), and postural stability of the experimental group were significantly greater than those of the control group. Duration of standing on the right foot and that of standing on the left foot of the experimental group was greater than that of the control group. Total balance scores of the experimental group were significantly higher than those of the control group. Among 13 items for balance, the scores of experimental group in balance with eyes closes, turning balance, sternal nudge, neck turning, one leg standing balance and back extension were higher than those of the control group. Total scores of gait of the experimental group were significantly higher than those of the control group following the walking training. Scores of experimental group in step height, step length and walk stance while walking among 9 items for gait were significantly higher than those of the control group. The results suggest that walk training can improve physical fitness for prevention in home bound elderly women.

• 대한물리치료과학회지
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• 제12권4호
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• pp.25-31
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• 2005

이 사례연구는 2002년 10월 15일 칼에 의한 좌상으로 경추 3-4번의 불완전 척수손상을 입은 25세의 남자 환자가 최초 병원에서 2002년 12월 한달 간의 치료를 마친 후, 2003년 1월 3일부터 4월 28일까지 태릉에 위치한 N 재활센터에서 주 5회 2시간의 자세조절 훈련, 심폐지구력 훈련, 웨이트 훈련, 스포츠(축구, 소프트 볼), 여가활동(등산)의 프로그램을 적용하여 척추손상 환자의 사회적응을 돕기위한 재활 프로그램의 다양화를 꾀하기 위한 기초 선행 작업으로 시작되었다. 신체능력을 평가하기 위한 측정도구는 관절가동범위(Range of Motion), 수동근력검사(Muscle Manual Test), 경직(Spasticity), 신체체력(Physical Fitness), 발란스(Balance: one leg stand), 상대적인 등속성 하지근력(Isokinetic Muscle Strength) 그리고 신체조성(Body Composition)로 하였다. 재활기간을 통해 처음 시작 일자에서 45일 간격으로 3차례의 측정을(1월 3일부터 4월 28일까지 실시하였다) 실시하였다. 최초 환자의 상태는 부분적으로 일상생활의 도움을 받아야 하는 상태로 동작을 시작하려 할 때 경직이 발생되어 옷을 입고 벗기, 신발 신고 벗기, 운전, 식사, 보행과 계단보행, 경사보행에서 보조자의 도움이 필요했으며, 작은 물건 잡기와 글씨쓰기, 타이핑 작업은 불가능 한 상태였다. 또한 스포츠 활동과 여가활동 역시 불가능 한 상태였다. 3달 15일간의 기간 동안 환자는 복학을 준비하기 위해 적극적으로 치료에 임했으며, 결과는 다음과 같았다. 신체조성은 재활 훈련을 통해 체중, 체지방율(%), 복부지방율(WHR)의 많은 감소를 가져왔다. 경직을 측정하는 Ashworth Scale은 정상에 가깝게 감소하였다. 관절가동범위는 고관절, 무릎, 발목에서 모두 증가하였다. 수동근력검사(0-9)는 많은 향상을 가져왔다. 신체체력능력 항목에서 근지구력의 윗몸일으키기와 팔굽히기, 악근력, 유연성으로 앉아 체간 숙이기, 민첩성으로 사이드 스텝, 순발력의 서전트는 모두 크게 향상되었다. 환자의 일상능력에서도 옷을 입고 벗기, 신발 신고 벗기, 운전, 식사, 보행과 계단보행, 경사보행에서 보조자의 도움이 필요없었으며, 타이핑 작업은 5손가락을 모두 사용하지는 않았지만, 1분에 80타로 큰 향상을 가져왔다. 또한 축구와 소프트볼, 등산을 달에 1회 정도 실시하여 약간의 도움만으로 가능하게 되었다.

• 대한기계학회논문집A
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• 제41권4호
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• pp.329-332
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• 2017

본 연구는 기존 운동기기에 부착 가능한 새로운 운동중량, 횟수 자동측정기기의 개발을 위하여 센서모듈과 운동정보획득 알고리즘을 이용하여 운동의 양을 측정할 수 있는 시스템의 운동 계측성능 평가에 관한 것이다. 개발된 시스템은 기존 사용되고 있는 운동기기에 손쉽게 장착할 수 있도록 설계하였으며 측정된 데이터는 스마트폰에 블루투스로 전달 가능하도록 하였다. 실험결과 운동습관이 다른 3명의 사용자로부터 무게 및 횟수를 작은 오차로 검출할 수 있었다. 본 시스템은 사용자의 운동을 측정하여 운동데이터 활용이 가능한 각종 기기에 전달함으로써 개인 맞춤형 헬스케어 시스템 및 재활치료 시스템에도 적용이 가능하다는 장점을 가지고 있다.

• 대한정형도수물리치료학회지
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• 제18권1호
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• pp.83-86
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• 2012

Background: The research examined the effect of a scapular stabilizing exercise on shoulder pain, active range of motion (AROM) and changes in the position of the shoulder blade of patients with frozen shoulder. Methods: General physical therapy and a scapular stabilizing exercise were applied to a 53-year-old female patient with frozen shoulder three times a week for four weeks. Before and after the therapy, measurements were made on the visual analog scale (VAS) and of the AROM, and a lateral scapular slide test was conducted. Results: Following the therapy, VAS fell from 7 to 3. Before therapy, flexion, abduction, internal rotation, and external rotation recorded $133^{\circ}$, $102^{\circ}$, $45^{\circ}$, and $53^{\circ}$ respectively; after the therapy they increased to $150^{\circ}$, $123^{\circ}$, $55^{\circ}$, and $65^{\circ}$ respectively. The lateral scapular slide test showed sliding distances before therapy of 8.5cm at $0^{\circ}$, 9.2cm at $45^{\circ}$, and 11.3cm at $90^{\circ}$; after therapy, the distances decreased to 6.8 cm at $0^{\circ}$, 8.2 cm at $45^{\circ}$, and 9cm at $90^{\circ}$. Conclusion: The scapular stabilizing exercise was effective in alleviating shoulder pain, increasing AROM, and reducing changes in the position of the shoulder blade of frozen shoulder patients.