• Title/Summary/Keyword: symmetry and asymmetry

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The Effects of Backward Walking with Rhythmic Auditory Stimulation on Gait and Balance in Patients with Stroke (리듬청각자극을 이용한 후방 보행 훈련이 뇌졸중 환자의 보행과 균형에 미치는 영향)

  • Hyun, Dong-Su;Choi, Jong-Duk
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.14 no.12
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    • pp.6237-6245
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    • 2013
  • This study examined the effects of backward walking with rhythmic auditory stimulation on the gait and balance of stroke patients. Twenty-one people were divided randomly into three groups; group I(n=7, forward walking), group II(n=7, backward walking), group III(n=7, backward walking by rhythmic auditory stimulation). Each group was trained for 30 minutes 5 times per week for 3 weeks, and was evaluated using a 10m walking test, time up and go test, functional reach test, stride length and step length asymmetry ratio. As a result, the pre- to post-test measures revealed a significant effect in each group on the gait speed, gait symmetry and balance(p<.05). The walking speed, gait symmetry and balance were higher in group II (p<.05) than in group I and it was the highest in group III(p<.05). The stride length was higher in group II and group III(p<.05) than in group I. In conclusion, for stroke patients, backward walking training with rhythmic auditory stimulation is effective on the gait speed, gait symmetry and balance.

Studies on Changes of Blood Components and Body Composition in the Cadets (사관생도들의 혈액성분 및 신체조성 변화 연구)

  • Kim, Dong-Soo;Chung, Yeon-Soo;Kim, Keun-Su
    • Journal of the Korea Institute of Military Science and Technology
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    • v.14 no.1
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    • pp.139-146
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    • 2011
  • This study investigated physical and physiological changes of normal young adults, who are cadets of the Air Force Academy, have kept long-term physical activities and healthy behavior. The physical and physiological indices were the blood and body composition. Data were collected at the first year period, and then 4th year period from same group of cadets. The amounts of blood components were not changed, but variation among cadets was significantly reduced in the 4th grade period. The red blood cells(RBCs) were significantly reduced and the concentration of hemoglobin(HGB) were significantly increased. The body weight was significantly decreased in the 1st grade period since the body fat was rapidly decreased after the basic military drill, and then it was recovered with building up of the skeletal muscle in the 4th grade period. Asymmetry of the arms was decreased with the increased physical activities and usage of various equipments. The muscular endurance were significantly enhanced in the 4th grade period. The long-term physical activities and healthy behaviors may keep the physical strength through enhanced blood stream and oxygen supply by reduction of the RBCs and increased HGB concentration, and fat and muscle control.

A study on the deconstruction shown in the 21st century fashion decentering phenomenon - Focused on visual beauty and wearable comfort of the clothing - (21세기 패션의 탈중심화 현상에 나타난 해체성에 관한 연구 - 의복의 외형미와 착용미를 중심으로 -)

  • Chung, Sehui;Kim, Yonson
    • The Research Journal of the Costume Culture
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    • v.23 no.1
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    • pp.145-160
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    • 2015
  • The purpose of this study is to review the concept and thinking structure of deconstruction theoretically and thereupon, analyze the visual beauty and wearable comfort of the clothing and further, discuss the aesthetic characteristics and values of the decentering phenomenon in the 21st century fashion. Deconstruction provides for an cognitive framework whereby we could comprehensively review the difficult-to-understand and imprudent creativity unravelling in the name of the post-modernism as well as the ambiguous visual beauty and wearable comfort of our contemporary fashion. In particular, deconstruction refuses such concepts involving the relationship between the conventional clothing and its components as order, symmetry, balance, harmony, perfection and simplicity and instead, attaches some sense of value to such relatively inferior concepts as disorder, asymmetry, unbalance, disharmony, imperfection and complexity, and thus, reflects them in the modes of aesthetic representations to create new aesthetics and expand the expressive potential.

ORTHOPANTOMOGRAPHIC STUDY OF THE MAXILLARY SINUS (Orthopantomograph에 의한 상악동의 형태학적 연구)

  • Kim Hyun Joo
    • Journal of Korean Academy of Oral and Maxillofacial Radiology
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    • v.1 no.1
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    • pp.5-11
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    • 1971
  • The author has observed the orthopantomograms of the maxillary sinus which were taken by special exposure method to study mesiodistal dimension, shape, symmetrical relationship, bony septum of the maxillary sinus and relationship between upper. 1st molar and the maxillary sinus, that were selected 56 cases of 23 to 27 years old male, who have good. systemic conditions and no missing teeth on upper posterior molar in normal occlusion, and obtained following conclusions: 1. Mesiodistal dimensions of the maxillary sinus are shown as follows; The mean of left dimension is 50.94±8.34㎜ and of right dimension is 49.50±9.87㎜. 2. To the shape of the maxillary sinus, V or U shape are 33cases(29.5%) and W shape are 77 cases(70.5%). 3. In the ralationship between upper 1st molar and floor of the maxllary sinus, superimposition are 62 cases (55.36%) and aproach are 50 cases (44.64%). 4. In the right and left symmetrical relationship of the maxillary sinus, symmetry are 37cases (66.07%) and asymmetry are 19 cases (33.93%). 5. The bony septums in the maxillary sinuses revealed that presence of bony septums are 29 cases (25.8%) and absence are 83 cases (74.11%).

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Single Crystal 133Cs NMR Study of Cs+(15-Crown-5)2I-

  • Lee, Kang-Yeol;Kim, Tae-Ho;Shin, Yong-Woon;Kim, Jin-Eun
    • Bulletin of the Korean Chemical Society
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    • v.25 no.4
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    • pp.529-532
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    • 2004
  • Cesium-133 NMR spectra of a single crystal of tetragonal $Cs^+ (15-crown-5)_2I^-$ were obtained as a function of crystal orientation in an applied magnetic field of 9.40T and analyzed to provide the magnitudes and orientations of the $^{133}Cs$ chemical shift and quadrupolar tensors for two magnetically nonequivalent and symmetry related sites. Chemical shift tensor components and parameters of quadrupolar interactions are obtained as ${\delta}_{11}=46(1),\;{\delta}_{22}=60(1),\;{\delta}_{33}=-30(1)$ ppm, quadrupole coupling constant QCC = 581(1) kHz, and asymmetry parameter ${\eta}$ = 0.481(1), respectively. The nonaxially symmetric NMR parameters imply that the local environment of the cesium nuclei is nonaxially symmetric. The DANTE experiment burned holes in the $^{133}Cs$ NMR line of the title compound. The hole burning of the single crystal and powder $^{133}Cs$ NMR lines showed that the NMR lines are not homogeneously broadened.

Condylar Hyperplasia with Long-standing Temporomandibular Joint Dislocation

  • Kim, Il-Kyu;Cho, Hyun-Young;Jung, Bum-Sang;Pae, Sang-Pill;Cho, Hyun-Woo;Seo, Ji-Hoon
    • Maxillofacial Plastic and Reconstructive Surgery
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    • v.36 no.1
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    • pp.16-20
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    • 2014
  • Mandibular condylar hyperplasia is an uncommon condition of excessive unilateral growth of the condyle causing facial asymmetry and occlusal alterations. The etiology of condylar hyperplasia is unclear, but several factors are suspected, including previous trauma, hormonal disturbances, and abnormal functional loadings. Acute or chronic recurrent dislocation of temporomandibular joint (TMJ) is common, but long-standing dislocation is rare. We present two cases of the exophytic condylar hyperplasia that lasted for over 20 years with TMJ dislocation. In both cases, we performed a condyloplasty to restore normal occlusion and facial symmetry, with satisfactory results.

The Effect of Masticatory Muscle Fatigue on the Occlusal Contact Stability and Masticatory Muscle Actibities (저작근의 피로가 치아접촉안정성 및 저작근활성에 미치는 효과)

  • Hye-Yeong Kim;Sun-Ha Kim;Jae-Kap Choi
    • Journal of Oral Medicine and Pain
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    • v.17 no.1
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    • pp.41-50
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    • 1992
  • The authors performed a experimental study to evaluate the effects of masticatory muscle fatigue on tooth contact and masticatory muscle activity in 26 normal healthy women. The experimental masticatory muscle fatigue was induced by unilateral biting of 5kg force on mandibular first molar. The results were as follows : 1. The initial symptom related to muscle fatigue pain appeared in 85.19 seconds of isometric contraction and the endurance time of isometric contraction was 203.15 seconds. 2. The pain occurred more frequently in masseter region than in temporal region. In masseter pain the incidence was almost equal between both sides, whereas the temporal pain was more in contralateral side. 3. The spontaneity and the symmetry of tooth contact during maximum clenching were reduced after isometric unilateral biting. 4. After induction of experimental muscle fatigue, the EMG activities of masseter muscles of both sides and ipsilateral temporal muscle showed the tendency of decreasing activities. 5. The asymmetry indicies of masseter and temporal muscles were reduced after isometric bilateral biting.

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Characteristics of the Uses and Exterior Design of Balconies in Urban Housing - Focusing on the Balconies from the Ancient Times to the 19th Century with a Culture-historical Perspective - (도시주거의 발코니에서 나타나는 내부이용 및 외부표현 특성 - 고대부터 19세기 말까지의 동.서양 주거문화사적(文化史的) 고찰을 중심으로 -)

  • Jee, Soo-In
    • Journal of the Korean housing association
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    • v.21 no.2
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    • pp.133-144
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    • 2010
  • The purpose of this study is to analyze the uses and exterior design of the balconies in urban housing from the ancient times to the 19th century. In doing so, the paper seeks to investigate the cultural identity of the balcony in urban housing. The results are as follow. First, in the urban housing the balcony space were made for protection from the heat, light and ventilation; gardening; views toward the streets, city, waterside, inner court, domain for men; breathing french air; watching ceremony, festivals and events; simple houseworks like drying, carpet cleaning and hair coloring; lever installation and fire escape. Second, as part of exterior design the typical projecting characteristic of the balconies was emphasized and they became an impotent decorative element. The monotonous facade changed to a lively design with a rhythmical sense. On the facade the effects of horizontal movement, symmetry or asymmetry from the main entrance, and the center-projection (rialto) were created. In the urban housing the balconies were used for cultural activities which supplement and enlarge the function of the interior space, and moreover the rich effects of the facade contributed to the creation of attractive urban landscape.

A RADIOGRAPHIC STUDY ON TEMPOROMANDIBULAR JOINT TROUBLE (악관절기능장애자의 방사선학적 연구)

  • Choe Byung Woon
    • Journal of Korean Academy of Oral and Maxillofacial Radiology
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    • v.9 no.1
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    • pp.13-18
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    • 1979
  • The purpose of this study was to investigate the radiographic images of Temporomandibular joint trouble patients. This study included 186 patients with the chief complaints of TMJ pain and dysfunction. Their age ranged from 17 to 68 years. All patients were identified in the department of Dental mary of College of Dentistry, Seoul National University, Apr. 1978 to Jun. 1979. The author has observed the radiographic variations of two positions of condylar head taken by modified transcranial oblique-lateral projection, which are one in centric occlusion and the other in 1 inch(2.54㎝) mouth open. The results were obtained as follows; 1. In centric occlusion, the distances and positional relationship between the summit of condylar head and the deepest point of articular fossa revealed more or less large variations; Normal range is of 37.9%, anterior displacement of 37.3% and posterior displacement of 22.6%. 2. In the horizontal movement of condylar heads when on 1 inch mouth open, it was revealed that normalrange was of 46.5%, anterior displacement of 12.3%, posterior displacement of 41. 1 %. 3. In the positional interrelationship of both condylar heads when on 1 inch mouth open, it was revealed that symmetry(71. 5%) occurred approximately 2.5 times as many as asymmetry. 4. In both centric occlusion and 1 inch mouth open, it was showed that almost all estimated figures were greater in male than in female, and in the horizontal movement of condylar head when on 1 inch open, it was showed that hypermobility was dominant in male and hypomobility in female.

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Influence of Slashpipe Exercise on Symmetrical Contraction of Trunk Muscle in Normal Adults

  • Choi, Young In;Kim, Jung Sun;Kim, Shin Young
    • The Journal of Korean Physical Therapy
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    • v.31 no.5
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    • pp.298-303
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    • 2019
  • Purpose: This study examined the effects of slashpipe exercise on reducing the thickness of the left and right external oblique, internal oblique, transverse abdominis, erector spinae, and multifidus muscles. Methods: A total of 29 healthy adult men and women were included in the study. They performed trunk flexion in the supine position and trunk extension in the prone position with a slashpipe and weight bar. The external oblique, internal oblique, and transverse abdominis muscles were measured in the supine position, while the erector spinae and multifidus muscles were measured in the prone position. The data were analyzed using the SPSS ver 21.0 statistical program. The difference in thickness between the right and left sides of the trunk muscle was analyzed by repeated measures analysis. The statistical significance level was set to p<0.05. Results: The results showed that the slashpipe exercise reduced significantly the difference in thickness of the oblique internus and erector spinae muscles compared to the weight bar exercise. Conclusion: The chaotic fluidity of the fluid filled inside the slashpipe could be used as sensory feedback information on body mal-alignment, which would have positively affected the symmetrical contraction of the trunk muscles as a trigger for self-correction. Therefore, it will have a useful effect not only on the health of the general public, but also on low back patients and athletes with muscle asymmetry.