• 제목/요약/키워드: segmental

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Green Wall 시스템의 설계 및 해석을 위한 기초연구 (A Basic Study for Design and Analysis of the Green Wall System)

  • 박시삼;김종민;김홍택
    • 한국지반공학회:학술대회논문집
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    • 한국지반공학회 2005년도 지반공학 공동 학술발표회
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    • pp.681-688
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    • 2005
  • The Green Wall is the highest eco-system among a segmental retaining wall systems. Recently, the demand of high segmental retaining wall (SRW) is increased in domestic. The soil nailing system is applied in order to maintain the high SRW stability for steeper slope. However, the proper design approach that can consider the earth pressure reduction effects in soil nailing system has not been proposed. Hence, the purpose of this study was to provide the design and analysis technique of the segmental retaining wall reinforced by soil nailing. Also, in this study, various parametric studies using numerical method as shear strength reduction (SSR) technique were carried out. In the parametric study, the length ratio and the bond ratio of the soil nailing were changed to identify the earth pressure reduction effect of the retaining wall reinforced by soil nailing.

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Aurora DB를 이용한 잡음 음성 인식실험을 위한 Segmental K-means 훈련 방식의 기반인식기의 구현 (An Implementation of the Baseline Recognizer Using the Segmental K-means Algorithm for the Noisy Speech Recognition Using the Aurora DB)

  • 김희근;정용주
    • 대한음성학회지:말소리
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    • 제57호
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    • pp.113-122
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    • 2006
  • Recently, many studies have been done for speech recognition in noisy environments. Particularly, the Aurora DB has been built as the common database for comparing the various feature extraction schemes. However, in general, the recognition models as well as the features have to be modified for effective noisy speech recognition. As the structure of the HTK is very complex, it is not easy to modify, the recognition engine. In this paper, we implemented a baseline recognizer based on the segmental K-means algorithm whose performance is comparable to the HTK in spite of the simplicity in its implementation.

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소아에서 발생한 직장구불결장의 분절확장에 대한 Laparoscopic-Assisted Transanal Endorectal Pull-Through 술식 (Laparoscopic-Assisted Transanal Endorectal Pull-Through for Segmental Dilatation of Rectosigmoid Colon in a Child)

  • 박지영;박진영
    • Advances in pediatric surgery
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    • 제19권2호
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    • pp.156-161
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    • 2013
  • Congenital segmental dilatation of the colon is a very rare entity of unknown etiology, characterized by a localized dilatation of a bowel segment of the colon of variable length and an abrupt transition between the normal and dilated intestine. It can affect any part of the colon, with the rectosigmoid colon being the most commonly affected site. The clinical and radiological features may resemble that of Hirschsprung disease, but differ in that the normal ganglion cells are found in the dilated and normal segment of the colon. We performed laparoscopic-assisted transanal endorectal pull-through for segmental dilatation of rectosigmoid colon in an 8-year-old boy with chronic constipation since the age of 5 months.

조립식 프리스트레스트 콘크리트 교각에 관한 해석적 연구 (Analytical Study on Precast Segmental Prestressed Concrete Bridge Piers)

  • 김태훈;진병무;김영진;신현목
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2006년도 춘계학술발표회 논문집(I)
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    • pp.178-181
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    • 2006
  • The purpose of this study is to investigate the inelastic behavior of precast segmental prestressed concrete bridge piers. A computer program, named RCAHEST (Reinforced Concrete Analysis in Higher Evaluation System Technology), for the analysis of reinforced concrete structures was used. Material nonlinearity is taken into account by comprising tensile, compressive and shear models of cracked concrete and a model of reinforcing steel. An unbonded tendon element based on the finite element method, that can represent the interaction between tendon and concrete of prestressed concrete member, is used. A joint element is newly developed to predict the inelastic behaviors of segmental joints. The proposed numerical method for the inelastic behavior of precast segmental prestressed concrete bridge piers is verified by comparison with reliable experimental results.

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악리론으로 본 정음창제와 정음소 분절 알고리즘 (Ortho-phonic Alphabet Creation by the Musical Theory and its Segmental Algorithm)

  • 진용옥;안정근
    • 음성과학
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    • 제8권2호
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    • pp.49-59
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    • 2001
  • The phoneme segmentation is a very difficult problem in speech sound processing because it has found out segmental algorithm in many kinds of allophone and coarticulation's trees. Thus system configuration for the speech recognition and voice retrieval processing has a complex system structure. To solve it, we discuss a possibility of new segmental algorithm, which is called the minus a thirds one or plus in tripartitioning(삼분손익) of twelve temporament(12 율려), first proposed by Prof. T. S. Han. It is close to oriental and western musical theory. He also has suggested a 3 consonant and 3 vowel phonemes in Hunminjungum(훈민정음) invented by the King Sejong in the 15th century. In this paper, we suggest to newly name it as ortho-phonic phoneme(OPP/정음소), which carries the meaning of 'the absoluteness and independency'. OPP also is acceptable to any other languages, for example IPA. Lastly we know that this algorithm is constantly applicable to the global language and is very useful to construct a voice recognition and retrieval structuring engineering.

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보강토 옹벽 전면블록의 연결강도 및 마찰특성 평가 (Assessment of Connection Strength and Frictional Characteristic for The Segmental Retaining Wall Unit)

  • 김진만;조삼덕;오세용;이대영
    • 한국지반공학회:학술대회논문집
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    • 한국지반공학회 2005년도 춘계 학술발표회 논문집
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    • pp.1562-1571
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    • 2005
  • The use of geogrid for SRW systems and bridge abutment has increased rapidly over the past 10 years in Korea. The concept of segmental retaining walls and reinforced soil is very old and for example The Ziggurats of Babylonia(i.e. Tower of Babel) were built some 2,500 to 3,000 years ago using soil reinforcing methods very similar to those described in current design. Modern SRW(Semental Retaining Wall) units were introduced in 1960's as concrete crib retaining wall systems. In this paper, the friction properties between segmental concrete units and geogrid are investigated by performing various tests.

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Numerical investigation of segmental tunnel linings-comparison between the hyperstatic reaction method and a 3D numerical model

  • Do, Ngoc Anh;Dias, Daniel;Oreste, Pierpaolo
    • Geomechanics and Engineering
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    • 제14권3호
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    • pp.293-299
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    • 2018
  • This paper has the aim of estimating the applicability of a numerical approach to the Hyperstatic Reaction Method (HRM) for the analysis of segmental tunnel linings. For this purpose, a simplified three-dimensional (3D) numerical model, using the $FLAC^{3D}$ finite difference software, has been developed, which allows analysing in a rigorous way the effect of the lining segmentation on the overall behaviour of the lining. Comparisons between the results obtained with the HRM and those determined by means of the simplified 3D numerical model show that the proposed HRM method can be used to investigate the behaviour of a segmental tunnel lining.

Spinal segmental myoclonus improved with epidural blockade in a patient with herpes zoster radiculitis

  • Han, Su-Hyun;Jeong, Hae-Bong;Yoo, Il-Han;Ahn, Suk-Won
    • Annals of Clinical Neurophysiology
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    • 제19권1호
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    • pp.71-73
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    • 2017
  • The spinal segmental myoclonus by viral radiculitis has been rarely reported and the pathophysiology remains to be elucidated. However, the hyperactivity of contiguous anterior horn neurons induced by viral irritation has been suggested to be a possible patho-mechanism. In general, spinal segmental myoclonus is not well-controlled by medication and the patient suffers from continuous involuntary movement. We recently experienced a case of spinal segmental myoclonus induced by herpes zoster radiculitis, and which was successfully relieved by epidural injections.

요통에 적용된 심부 안정근 재교육 프로그램에 관한 연구 (A study on relearning program of deep stabilizing muscle for low back pain)

  • 구희서;김순자
    • The Journal of Korean Physical Therapy
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    • 제16권4호
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    • pp.11-22
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    • 2004
  • The concept of segmental stabilization has been one of the most exciting advancements in the field of physical therapy. Specific deep stabilizing muscle have proven to reverse motor control deficits that occurs after back injury. After an injury, a new motor programming strategy is adopted and there is excessive recruitment of the large , strong , global muscular system works instead of small segmental deep muscle recruitment for stability. Many physical therapists and doctors mistakenly prescribe therapeutic exercise for low back pain to use larger, superficial musculature to strengthen the spine for stability and pain control. But motor control coordination of local segmental muscle is actually the key to stability and pain control, not strengthening of global muscle. A recent focus in physiotherapy management of patients with chronic back pain has been the specific training of muscles surrounding the lumbar spine whose primary role is considered to be the provision of dynamic stability and segmental control to the spine. These are the deep transverse abdominis muscle and lumbar multifudus.

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모달시험을 통한 Post-Tensioned Segmental 콘크리트 교량의 손상평가 (Damage Assessment of a Post-Tensioned Segmental Concrete Bridge Using Modal Testing Data)

  • 허광희;최만용
    • 한국구조물진단유지관리공학회 논문집
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    • 제3권4호
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    • pp.205-214
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    • 1999
  • 구조물의 동특성(고유진동수, 감쇠, 모드형상 등)의 변화는 구조물의 안전도를 평가할 수 있는 한 방법이다. 본 연구에서 콘크리트 세그먼트의 웨브 부분에 상당히 많은 균열이 진전되고 있는 상태의 Post-Tensioned Segmental 콘크리트 교량의 안전도 평가를 시도하였다. 안전도 평가를 위한 근간 데이터로 1986년 측정했던 데이터와 2차원 유한요소해석에서 얻은 결과값을 사용했다. 손상의 정도와 손상의 위치를 보다 정확히 찾아내기 위한 기술 중의 한 방법으로 Modal Test를 이용하였다. 이 방법이 Post-Tensioned Segmental 콘크리트 교량에 적용되어 교량의 안전도를 분석 평가하였다.

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