• 제목/요약/키워드: Lateral view

검색결과 420건 처리시간 0.032초

시변 절환면을 갖는 슬라이딩 모드에 의한 차량의 횡방향 운동제어 (Control of Vehicle Lateral Dynamics using Sliding Mode with Time-Varying Switching Surface)

  • 이창로;양현석;박영필
    • 대한기계학회:학술대회논문집
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    • 대한기계학회 2000년도 춘계학술대회논문집A
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    • pp.458-463
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    • 2000
  • This paper presents a design of the controller for vehicle lateral dynamics using active yaw moment. Vehicle lateral motion is incorporated with directional controllability and stability. These are conflicting each other from the view of vehicle handling performance. To compromise the trade-off between these two aspects, we suggest a new control algorithm based on the sliding mode with time-varying switching surface according to the body side slip angle. The controller can deal with the nonlinear region in vehicle driving and be robust to the parameter uncertainties in the plant model. Control performance was evaluated from the simulation.

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근위축성측삭경화증 환자의 적응과정 (The Adjustment Process of Patients with Amyotrophic Lateral Sclerosis)

  • 이윤경;임난영;김승현
    • 근관절건강학회지
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    • 제15권2호
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    • pp.140-154
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    • 2008
  • Purpose: The purpose of this study was to describe the adjustment process of patients with Amyotrophic Lateral Sclerosis(ALS). Method: The data were collected from May 2007 to February 2008 through individual in-depth interviews with 4 ALS patients. The data collection and analysis were performed according to grounded theory methodology, as suggested by Strauss and Corbin. Results: 'Accepting the sick role' was the central phenomenon, which was derived from 'perceiving an intial symptom'. Therefore, the adjustment pattern was represented by using the different strategies, which were 'raising hope' and 'hoping to dye comfortably'. For taking a view of the future, ALS patients adopted the strategies of 'living positively', 'being treated hardly', 'joining in the experience', 'depending on the absolute being', 'recognizing the dying process'. Conclusion: This study provides guidance for the development of nursing interventions for patients with ALS.

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외측 인대 손상의 자기공명영상 소견들이 수술 소견 및 신체검사와 항상 일치할까? (Are Magnetic Resonance Imaging Findings of Ankle Instability Always Correlated with Operative and Physical Examination Findings?)

  • 박현우
    • 대한족부족관절학회지
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    • 제25권1호
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    • pp.1-5
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    • 2021
  • Physical examination and surgical findings and symptoms are often inconsistent with magnetic resonance imaging (MRI) findings when diagnosing chronic ankle lateral ligament instability, and confirmed surgical findings are used as the gold standard in most clinical studies. Anterior drawer testing is considered unreliable because normal findings are highly variable, and its accuracy ranges from 50% to 100%. Furthermore, radiographic stress imaging, such as in anterior drawer stress view, is performed under manual stress or using a stress device, and its findings also vary widely and confuse when interpreting stress views. The average accuracy of MRI findings is around 85% (range, 66%~91.7%), and thus, cannot be used as a primary indicator for surgery. For patients with suspected lateral ankle ligament instability, based on symptoms and physical examination findings, MRI may be useful for identifying lesions in ankle joints and for differentiating them from other conditions.

측두하악관절의 panoramic double TMJ 방사선사진상에서 하악과두와 인접구조의 관계 (Relationship between the condyle and adjacent structures in double temporomandibular joint view using panorama)

  • 이창율;김재덕
    • Imaging Science in Dentistry
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    • 제31권4호
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    • pp.209-214
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    • 2001
  • Purpose: To investigate the ability of double TMJ view by multifunctional panorama to view the bony components and the space of the temporomandibular joint. Materials and Methods: Ten dry skulls fitted with resin shims over the articular surface of the condyle were used to reproduce the temporomandibular joint space. Fine metal wires were attached to the three portions of contours of the condylar head and the articular eminence. With 10 dry skulls and 20 cases having TMJ dysfunction, double TMJ views by multifunctional panorama (Planmeca 2002 Proline CC) and transcranial views were taken, analyzed from the anatomical view point, and compared statistically in view of the widths of the posterior joint space and the condylar head. Results: In double TMJ view, the supero-anterior part of the condyle represented the lateral 1/3, the most superior part represented center portion, and the posterior part medial l/3 of the condyle. In maximum mouth opening, no other structures were superimposed with the condyle in double TMJ view. In double TMJ view, petrous bone was moderately superimposed with the superior part of the condyle and the posterior increment of angle exposure made wider the images of the articular eminence and the condyle. The tendency of reduction in the posterior joint space appeared in the side of TMJ dysfunction compared with the normal side. The posterior joint spaces in double TMJ view were statistically wider (p<0.05) than those in transcranial view. The correlation coefficient was 0.5179 between the widths of the posterior joint spaces in two radiographic views. Conclusions: Double TMJ view can be substituted for transcranial view in evaluating the TMJ dysfunction.

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Utility of False Profile View for Screening of Ischiofemoral Impingement

  • Kwak, Dae-Kyung;Yang, Ick-Hwan;Kim, Sungjun;Lee, Sang-Chul;Park, Kwan-Kyu;Lee, Woo-Suk
    • Hip & pelvis
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    • 제30권4호
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    • pp.219-225
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    • 2018
  • Purpose: Ischiofemoral impingement (IFI)-primarily diagnosed by magnetic resonance imaging (MRI)-is an easily overlooked disease due to its low incidence. The purpose of this study was to evaluate the usefulness of false profile view as a screening test for IFI. Materials and Methods: Fifty-eight patients diagnosed with IFI between June 2013 and July 2017 were enrolled in this retrospective study. A control group (n=58) with matching propensity scores (age, gender, and body mass index) were also included. Ischiofemoral space (IFS) was measured as the shortest distance between the lateral cortex of the ischium and the medial cortex of lesser trochanter in weight bearing hip anteroposterior (AP) view and false profile view. MRI was used to measure IFS and quadratus femoris space (QFS). The receiver operating characteristics (ROC), area under the ROC curve (AUC) and cutoff point of the IFS were measured by false profile images, and the correlation between the IFS and QFS was analyzed using the MRI scans. Results: In the false profile view and hip AP view, patients with IFI had significantly decreased IFS (P<0.01). In the false profile view, ROC AUC (0.967) was higher than in the hip AP view (0.841). Cutoff value for differential diagnosis of IFI in the false profile view was 10.3 mm (sensitivity, 88.2%; specificity, 88.4%). IFS correlated with IFS (r=0.744) QFS (0.740) in MRI and IFS (0.621) in hip AP view (P<0.01). Conclusion: IFS on false profile view can be used as a screening tool for potential IFI.

Nemoura phasianusa, a New Species of Nemouridae (Insecta: Plecoptera) from Korea

  • Ham, Soon-Ah
    • Animal Systematics, Evolution and Diversity
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    • 제25권1호
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    • pp.95-98
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    • 2009
  • Nemoura phasianusa n. sp. is similar to Nemoura jezoensis in general morphology especially lateral view, but can be distinguished by the combination of the characters of the epiproctal shape whose apex is depressed medially, and sclerites of epiproct, which look like question marks without dots.

중년여성의 의복구성을 위한 상반신 체형분류 (Classification of Upper Torso Somatotype for the Construction of Middle-Aged Women's Clothing)

  • 김혜경;김순자
    • 한국의류학회지
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    • 제19권6호
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    • pp.1027-1039
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    • 1995
  • Clothing fitness is strongly required in the apparel industry, and draping is an effective tool to increase fitness to the wearers. A more sophisticated and systematic information of the somatotype, accordingly, is necessary for better cress form design. This study was performed to provide fundamental data on middle aged women's upper torso for dress form designers and pattern makers by classifying the somatotype based on each individual's lateral view, and analyzing the characteristics of their somatotype. Data were analyzed by factor analysis, cluster analysis, analysis of variance. Factor analysis was used to 23 items from photometric measurment and cluster analysis was applied for classification of upper torso forms. Through cluster analysis using 5 factor scores, 3 somatotypes were categorized from th lateral view 1) Type I was straight somatotype in which the plumb line passes throught the lobe of the ear, the shoulder joing and the mid abdominal region laterally. This type of woman was slender and shorter than average. 2) Type II was bending somatotype in which the upper portion of upper torso is bent forward. This type of woman was taller and fatter than average. 3) Type III was swayback somatotype in which the upper portion of protruding point on the back is bent forward but the lower portion of protruding point had characteristic of turning over somatotype. This type of woman had storter length on the front and longer lenght on the back, slender type and flat chest.

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체형별 토르소 원형의 개발에 관한 연구 -다트(Dart) 배분을 중심으로- (Study of Development of Torso Pattern according to Somatotype)

  • 김소라;송미령
    • 한국의류학회지
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    • 제21권2호
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    • pp.262-276
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    • 1997
  • The purpose of this study was to develop torso patterns according to the somatotype and thus to contribute to the ready-made industry. Classification of the somatotypes was based on each individual's lateral and frontal view and development of torso patterns according to the somatotype was to center on the darts. The subjects in this study were female college students of 18 to 24 year old. This study was carried out by the following procedures: 1. Classification of the somatotypes was based on each individual's lateral and frontal view. The somatotypes were classified into 18 types. 2. Eighteen subjects who had prominent somatic characteristics and average mea- surements were chosen. 3. Subjects were clothed and a sensory evaluation was carried out. 4. Experiments of alterations were carried out. The quantities of revision of torso patterns due to the difference of somatotypes were measured through these. These method were due to the items of the sensory evaluation. 5. By obtaining the results of the sensory evaluation and experiments of alterations, the torso patterns according to the somatotypes were developed. These were inputted to the CAD System and compared with one another. 6. Grading of the torso pattern according to each somatotype was carried out and thus a file of torso patterns was made according to the somatotypes.

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병렬처리 그래픽 기술 기반의 Spectral Domain-Optical Coherence Tomography를 이용한 3차원 광 대역 망막 촬영 (High-Speed SD-OCT for Ultra Wide-field Human Retinal Three Dimensions Imaging using GPU)

  • 박기범;조남현;;김지현
    • 대한의용생체공학회:의공학회지
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    • 제34권3호
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    • pp.135-140
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    • 2013
  • We have developed an ultra wide-field of view Optical Coherence Tomography(OCT) which has capability to 2D and 3D views of cross-sectional structure of in vivo human retina. Conventional OCT has a limitation in visualizing the entire retina due to a reduced field of view. We designed an optical setup to significantly improve the lateral scanning range to be more than 20 mm. The entire human retinal structure in 2D and 3D was reported in this paper with the developed OCT system. Also, we empirically searched an optimized image size for real time visualization by analyzing variation of the frame rate with different lateral scan points. The size was concluded to be $1024{\times}2000{\times}300$ pixels which took 9 seconds for visualization.

중년여성의 상반신 측면체형 특성에 관한 연구 (A Study for the Properties of Upper Body Somatotype of Lateral View for Middle-aged Women)

  • 김소라
    • 대한가정학회지
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    • 제41권11호
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    • pp.1-9
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    • 2003
  • The somatotype classification of this study was to manufacture well-fitted clothes for middle-aged women. The somatotype classification of the upper body of lateral view was based on previous studies, and 4 postures, straight posture, leaning back posture, bent forward posture, and swayback posture were selected for this study. The front of leaning back posture was longer and wider than that of straight posture, and its front neck depth was deeper. Its front interscye breadth was wider and back interscye breadth was narrower. S.N.P. B.P. front waistline length, waist front length, front diagonal length, chest shedder length, front waistline shoulder line length were longer, and S.N.P. scapular back waistline length, back length, back shoulder length, back diagonal length, shoulder line back waistline length were shorter. On the contrary, the front of bent forward posture was shorter and narrower than that of straight posture, and its back neck depth was deeper. The properties of swayback posture were similar to those of bent forward posture. Its front was shorter and narrower, but the results of front neck depth and back neck depth were like those of straight posture.