• 제목/요약/키워드: Single Subject Research

검색결과 347건 처리시간 0.034초

Possible Causes of Paleosecular Variation and Deflection of Geomagnetic Directions Recorded by Lava Flows on the Island of Hawaii

  • Czango Baag
    • IUGG한국위원회:학술대회논문집
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    • IUGG한국위원회 2003년도 정기총회 및 학술발표회
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    • pp.20-20
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    • 2003
  • In the summers of 1997 and 1998 and in February of 2000 we made 570 measurements of the ambient geomagnetic field 120 cm above the pavement surface of State Route 130, south of Pahoa, the island of Hawaii using a three-component fluxgate magnetometer. We measured at every 15.2 m (50 feet) interval covering a distance of 6, 310 m (20, 704 ft) where both historic and pre-historic highly magnetic basalt flows underlie. We also collected 197 core samples from eight road cuts, 489 specimens of which were subject to AF demagnetizations at 5 - 10 mT level up to a maximum field of 60 mT. We observed significant inclination anomalies ranging from a minimum of $31^{\circ}$ to a maximum $40^{\circ}$ where a uniform inclination value of $36.7^{\circ}$ (International Geomagnetic Reference Field, IGRF) was expected. Since the mean of the observed inclinations is approximately $35^{\circ}$ we assume that the study area is slightly affected by the magnetic terrain effect to a systematically shallower inclinations for being located in the regionally sloping surface of the southern side of the island (Baag, et al., 1995). We observed inclination anomalies showing wider (spacial) wavelength (160 - 600 m) and higher amplitudes in the historic lava flows area than in the northern pre-historic flows. Our observations imply that preexisting inclination anomalies such as those that we observed would have been interpreted as paleosecular variation (PSV). These inclination anomalies can best be attributed to concealed underground highly magnetic dikes, channel type lava flows, on-and-off hydrothermal activities through fissure-like openings, etc. Both the within- and between-site dispersions of natural remanent magnetization (NRM) are largest (up to ${\pm}7^{\circ}$) above the flows of 1955, while the area of pre-historic flows in the northern part of the study area exhibit the smallest dispersion. Nevertheless, mean inclinations of each historic flow of 1955 and 1790 are almost identical to that of the corresponding present field, whereas mean of NRM (after AF demagnetization) inclinations for each of the four pre-historic lava flow units is twelve to thirteen degrees lower than the present field inclination. We observed three cases of very large inclination variations from within a single flow, the best fitting curves of which are linear, second and third order polynomials each from within a single flow, whereas no present field variations are observed. This phenomena can be attributed to the notion that local magnetic anomalies on the surface of an active volcano are not permanent, but are transient. Therefore we believe that local magnetic anomalies of an active volcano may be constantly modified due to on going subsurface injections and circulations of hot material and also due to wide spacial and temporal distribution of highly magnetic basaltic flows that will constantly modify the topography which will in turn modify the local ambient geomagnetic field (Baag, et al., 1995). Our observations bring into question the general reliability of PSV data inferred from volcanic rocks, because on-going various geologic and geophysical activities associated with active volcano would continuously deflect and modify the ambient geomagnetic field.

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한국의 초록서비스에 대하여 (Abstracting Services in Korea)

  • 최성진
    • 한국문헌정보학회지
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    • 제24권
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    • pp.9-51
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    • 1993
  • The purpose of this study is twofold: to investigate into general characteristics of the abstracting services in Korea and to discuss general directions of development of the abstracting services in the country. This study is designed to achieve the purpose by gathering and analysing data related to the abstracting journals published in the past ten years and by comparing the results with similar data gathered by the investigator in 1984. The major conclusions made in this study is summarised as follows. (1) Researchers and professionals working in limited numbers of subject fields are benefited by abstracting services of recent achievements in research and development in Korea. Those in most of the fields have essentially no abstracting services of such achievements. Even many researchers and professionals in the limited numbers of the fields that have some elementary abstracting services are not informed of research results in their fields because the abstracting journals are scattered in many narrow subjects and in many cases, the abstracting journals only cover publications in some specific forms and kinds. (2) Abstracting journals of general subjects, which are supposed to be of more or less help to the researchers in the subject fields that have no abstracting journals of their own, have rapidly increased in number in the past ten years. Most of such abstracting journals carry thesis and dissertation abstracts, and the rest those of research papers published in specific places, in specific forms, by specific institutes, and of reports of research projects sponsored by specific foundations. These abstracting journals are not of the kind that comprehensively provide general readers with current awareness of publications of research results in Korea. (3) Most of the abstracting journals existing in Korea are published by institutions of higher education and research institutes, and the rest by commercial publishers, industrial firms, libraries, information centers, government agencies, research foundations, learned societies, etc. Those which publish many titles are small in number and those publish one or two titles are large in number. The former is largely made up of institutions of higher education and research institutes. (4) Ten years ago, there was not a single publishing house that produced abstracting journals. Three commercial publishing houses now produce abstracting journals. As this change occurs, centers of excellence are founded and competitive elements are introduced in abstracting services. This change, in turn, is expected to improve quality of the other abstracting journals in Korea. (5) The abstracting journals published in Korea are classified by type into those of dissertations, research papers, journal articles, patent specifications in that descending order. The fact that Master's and doctoral dissertation abstracts are dominating in Korea is due to the irrational practice of publishing those abstracts at many institutions. (6) Most of the abstracting journals existing in Korea are published by national or government-supported research institutes in order to publicise their own research outputs. Their coverage of literature is normally narrow, and naturally their value to users is limited. (7) The abstracting journals published in Korea increased in number at the rate of $77.8-100\%$ every five years in the past twenty-five years. Most of the abstracting journals that ceased to be published during the period survived for two years. (8) Korean is the desirable language for the abstracting journals designed to be distributed within Korea. About half of the abstracting journals published in Korea is printed in Korean and the other half in foreign languages, and in Korean with foreign languages. All the abstracting journals in foreign languages are printed in English xcept one, which is printed in Japanese. (9) Some twenty percent of the abstracting journals in Korea is published monthly, bimonthly, and quarterly. Others are published annually, biannually, and irregularly. The latter may not function properly as a current-awareness tool due to long intervals between their issues. It is particularly undesirable that about half of the abstracting journals in Korea is published irregularly. Most of the abstracting journals published in Korea are distributed freely to individuals and institutions selected by the publishers. (10) The abstracting journals published by the use of computers increased drastically in the past ten years. The abstracting journals produced by the conventional type-setting method will probably disappear In Korea in another ten years to come. Automation of the production of abstracting journals does not simply mean technical, economic improvement of publishing processes but availability of machine-readable databases that can be used for other purposes, including the generation of other publications and the provision of machine literature searching capabilities. Necessary steps should be taken for this important development that is occurring in the abstracting services in Korea.

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신장과 체중을 이용한 남자의 신체 용적 간접 측정 (Prediction of Human Body Volume from Height and Weight)

  • 김기용
    • The Korean Journal of Physiology
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    • 제4권2호
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    • pp.37-44
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    • 1970
  • Human body volumes were calculated from the measurments of body height and body weight. Equations Suited to express the relations of height, weight, and surface area to show the body volume were derived from the body volume measurements by means of underwater. weighing method. Underwater body weights were corrected for the residual volume of long obtained by the Rahn's three breath method. Underwater weighing was performed on 173 male subjects aged between 13 and 51 years. Subjects were divided into 4 age groups, namely, 13-16 years group of 47 subjects, 16-19 years group of 46 subjects, adult group aged between 22 and 38 years comprising 45 subjects, and middle-aged group (40-51 years) of 35 subjects. The group division was made on .the basis of physical growth and development. The following results were obtained. 1. Body height (H, cm), body weight (W, kg), body surface area $S,\; m^{2})$, and body volume (V, liter.) interrelated closely. V/S showed a high correlation with W/H and the coefficient of correlation was r=0.97 irrespective of age group differences of the subjects. The coefficients of correlation between V/S and W/H in the total mate subjects as a single group was r=1.983. Subsequently the following regression equation was obtained. V = S X (54.84 W/H + 14.08) The agreement of body volume values obtained by the calculation and underwater weighing in the total subject group was better than that of the separate age group division. 2. The calculated values of body volume were: 40.4 l (euiqvalent to the body density value of 1.0562 kg/1) in 13-16 years group; 52.0 l (equivalent to density value of 1.0723 kg/l) in 16-19 years group; 55.3 l (equivalent to density value of 1.0570 kg/l) In the adult group; and 54. 0 l (equivalent to density value of 1.074 kg/l) in the middle-age group. The mean deviation of calculated from the measured volume value ranged between ${\pm}0.55$ and ${\pm}0.81$ liters. 3. The correlation between V/S and mean skinfold thickness of 4 sites (arm, back, iliac and chest) was high, namely, the coefficient of correlation was r=0.656. The coefficients of correlation between V./S and the $R\"{o}hrer$ index ranged between r=0.668 and r=0.810 affected by the difference in group age of the subject. The body volume (V) alone correlated poorly than V/S with mean skinfold thickness (r=0.606) and the $R\"{o}hrer$ index (r ranged between 0.274 and 0.588).

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국내 대학출판부의 학술단행본 출판에 대한 양적 분석 (A Quantitative Analysis of Scholarly Monograph Publishing by University Presses in Korea)

  • 심원식;도슬기;이선애
    • 한국문헌정보학회지
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    • 제50권3호
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    • pp.309-327
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    • 2016
  • 학술단행본은 지식의 표현과 전달에 있어서 중요한 기능을 하고 있으며 동시에 학술연구의 중요한 성과물이다. 대학출판부는 상업성이 낮은 학술단행본을 발간하는 최후의 보루로 여겨진다. 하지만 국내 대학출판부를 통한 학술단행본의 규모와 내용에 대한 체계적인 데이터가 부족하다. 본 연구는 국립중앙도서관의 온라인 목록을 기반으로 1950년대부터 2015년까지의 대학출판부 출판 통계를 수집하고 분석하였다. 총 21,015건의 서지데이터가 분석에 사용되었다. 2001년부터 2015년까지 발간된 자료에 대해서는 학술단행본 여부에 대한 추정을 시도하였다. 국내 대학출판부를 통한 단행본 출판은 1970-80년대의 완만한 상승기를 거쳐 1990년대에 급격한 성장을 보였으나 2005년을 정점으로 하락하는 추세를 보이고 있다. 또한 학술단행본보다 어학교재, 강의교재 및 교양 관련 서적 발간의 비중이 더 높은 것으로 나타났으며 대학출판부 간의 출판 규모 및 학술단행본 발간 비중에서도 큰 격차가 있다. 저자 유형에 있어서는 1인 저서의 비중이 가장 높고 번역서의 경우 일정한 비율을 보이고 있지만 편집 저서의 경우 상당한 감소 추세를 보인다. 주제분야별 출판 분석에서는 사회과학 도서의 비중이 가장 높으며 분야별로 학술단행본의 비중은 큰 차이를 보인다.

과제 지향적 프로그램이 뇌졸중환자의 균형과 상지기능에 미치는 효과: 단일사례연구 (Effects of Task-Oriented programme on Balance and Upper Extremity in stroke)

  • 김은주;홍소영;김경미
    • 재활치료과학
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    • 제1권1호
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    • pp.17-28
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    • 2012
  • 목적 : 본 연구의 목적은 과제 지향적 프로그램이 뇌졸중 환자의 균형과 상지기능에 미치는 효과에 대해 알아보고자 단일 사례 연구를 실시하였다. 연구방법 : 연구 대상자는 뇌졸중 진단을 받은 자로 균형검사는 Time up & go 검사, Nintendo Wii Balance Board Test로 실시하였고, 상지기능은 Manual Function Test(MFT)로 측정하였다. 과제지향적 프로그램은 운동처리 기술평가(AMPS)의 표준화된 과제 중 셔츠다리기, 자루걸레로 바닥 청소하기, 창문 청소하기, 손빨래하기를 환자에게 맞게 수정 보완하여 실시하였다. 이에 대한 결과는 다음과 같다. 결과 : 환자의 동적 균형능력은 기초선 평균 51.53에서 42.62로 향상되었고, 정적 균형능력은 기초선에서는 좌우 균형차이가 평균 13.8 났으나, 중재 후 좌우 균형차이가 6.29로 보다 0에 가까워져 좌-우 균형이 안정되었음을 확인할 수 있었다. 또한 상기기능은 MFT 검사결과 평균이 6점에서 7.6점으로의 증가 되었다. 결론 : 일상생활활동 과제로 구성된 과제지향 프로그램은 뇌졸중환자의 균형과 상지기능 향상에 영향을 미칠 수 있다. 따라서 향후 본 연구의 결과를 일반화 시킬 수 있도록 다양한 유형과 특성을 가진 뇌졸중 환자들에 대한 연구가 지속되어야 할 것이다.

일본 중등학교 가정교과서 주생활영역의 교육내용 분석 (Content Analyses of Housing Unit of Secondary School Home Economics Textbooks in Japan)

  • 장상옥
    • 한국가정과교육학회지
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    • 제22권4호
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    • pp.155-183
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    • 2010
  • 본 연구는 일본 중등학교 가정 교과서 주생활영역 교육내용 분석을 통하여 우리의 가정 교과서 주생활영역 집필, 내용 수시보완 및 교육내용 재구성 시의 시사점을 얻고자 하였다. 분석대상은 현재 사용되는 2009년판 중학교의 '기술 가정' 교과서 '가정분야' 2종과 고등학교의 '가정총합' 6종이며, 분석내용은 외형체제, 본문내용, 용어해설, 읽기자료, 표자료 및 활동자료의 내용이었다. 연구결과의 시사점은 다음과 같다. 첫째, 주생활영역의 교육내용을 학교급의 증가에 따라 학습의 연계성을 갖고 계통성 있게 심화할 수 있도록 구성하면, 주생활영역의 학습목표를 학생들에게 명확하게 구현할 수 있을 것이다. 따라서 앞으로 개정되는 중등학교 교육과정과 가정교과서의 주생활영역은 학년별, 학교급별로 교육내용의 연계성을 갖도록 구성한다. 아울러 2009년 교육과정에 제시된 한 시점에 집중이수하는 방식은 교육효과가 낮을 것이므로 교육과정의 검토가 요망된다. 둘째, 주생활영역의 교육내용 구성 시 관점은 생활의 주체인 개인이나 가족을 중심으로 주거환경, 근접환경, 광역환경 차원을 반영하여 학습자가 자신과 사회와의 관계를 중시하고, 지구환경을 생각하며, 전통문화를 계승 발전시킬 수 있도록 구성한다. 셋째, 주생활영역의 교육내용 구성 시 수준은 학교급별 이해수준을 감안하여 이해도가 낮은 중학교에는 실험이나 실습과 같은 체험활동을 포함하고, 고등학교에는 스스로 문제를 연구하고 실생활에 적용하며 실천할 수 있도록 구성한다.

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3차원적 동작 분석기를 이용한 건강한 여자 노인의 하지 정렬 상태와 슬관절 내전 모멘트의 상관 관계에 관한 연구 (3-Dimensional Gait analysis and the relationship between lower limb alignment and knee adduction moment in elderly healthy women)

  • 조유미;이완희
    • 대한물리치료과학회지
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    • 제10권1호
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    • pp.90-101
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    • 2003
  • Gait analysis can provide a better understanding of how the alignment of the lower limb and foot can contribute to force observed at the knee. Anatomic and mechanical factors that affect loading in the knee pint can contribute to pathologic change seen at the knee in degenerative pint disease and should be considered in treatment plan. The purpose of this study is to present the gait analysis data and to determine whether there is any relationships between alignment of the lower limb, foot progression angle and knee pint moments in elderly healthy women with 3-dimensional motion analyzer. The results were as follows; 1. Cadence showed 114.8 steps/min, gait speed showed 1.05 m/s, time per a stride showed 1.06 sec, time per a step showed 0.53 sec, single-supporting phase was 0.41 sec, double-supporting phase was 0.24 sec, stride length was 1.04 m, Step length was 0.56 m. 2. According to the parameters of kinematics, the maximal knee flexion angle through swing phase showed left $46.82^{\circ}$, right $40.19^{\circ}$ and the maximal knee extension angle showed left $-1.32^{\circ}$, right $2.01^{\circ}$. knee varus showed left $26.90^{\circ}$, right $30.93^{\circ}$. 3. Moment, one of kinetic parameters of knee pint the maximal flexion moment showed left 0.363. Nm/kg, right 0.464 Nm/kg and maximal extension moment showed left 0.389 Nm/kg, right 0.463 Nm/kg. The maximal. adduction moment showed left 0.332 Nm/kg, right 0.379 Nm/kg and the maximal internal rotatory moment showed left 0.13 Nm/kg, right 0.140 Nm/kg. 4. On sagittal plane, the maximal power of knee joint showed left 0.571 J/kg, right 0.629 J/kg. On coronal plane, the maximal power of knee joint showed left 0.11 J/kg, right 0.12 J/kg. On transverse plane, the maximal power of knee joint showed left 0.058 J/kg, right 0.072 J/kg. 5. The subject who had varus alignment of the lower extremity had statistically higher in knee adduction moment in mid stance phase. 6. The subject who had large foot progression angle had statistically lower in knee adduction moment in late stance phase. A relationship was observed between the alignment of the lower extremity and the adduction moment of the knee joint during stance phase. Hence, we need some research to figure, out the change of adduction moment according to the sort of knee joint osteoarthritis and the normal geriatrics as well. And we also require more effective, specific therapeutic program by making use of those background of researches.

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말운동프로그램 향상을 위한 한국어 비단어 중재접근법의 확립 및 임상 적용 (Development and clinical application of Korean-version nonword intervention to improve speech motor programming)

  • 오다희;하지완
    • 말소리와 음성과학
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    • 제13권2호
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    • pp.77-90
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    • 2021
  • 본 연구는 국외에서 개발된 비단어 중재접근법을 수정 및 보완하여 한국어 비단어 중재접근법을 확립하고, 아동기 말실행증 아동에게 직접 적용하여 그 효과를 확인하기 위해 실시되었다. 궁극적인 목적은 비단어를 이용한 중재가 아동기 말실행증의 말운동프로그래밍 능력을 개선시켜 비단어 산출 및 단어로의 일반화에 효과적인지 알아보기 위함에 있다. 중재는 아동기 말실행증의 진단 특성을 보이는 5세 6개월의 남아를 대상으로, ABA설계를 사용한 단일대상연구를 실시하였다. 중재에 사용된 비단어는 아동 맞춤형으로 제작하였으며, 한 회기당 60분씩 주 2회로, 총 12회기를 실시하였다. 그 결과 중재한 3음절 비단어의 모든 지표가 향상되었으며, 중재하지 않은 3음절, 4음절 비단어 및 단어로의 일반화를 확인하였다. 단, 단어로의 일반화 효과는 비단어로의 일반화 효과에 비해 미비하였다. 비단어 중재는 대상 아동의 말운동프로그래밍 능력을 개선시키는데 효과적이었다. 그 결과 운동프로그래밍 손상에 기인한 전환 오류가 크게 감소하였고, 중재하지 않은 비단어의 산출 능력이 큰 폭으로 증가하였다. 그러나 강력하게 습관화된 단어 오류를 완전히 개선시키는 데에는 한계가 있었으며, 이는 보다 집중적이고 반복적인 중재 일정을 제공했을 때 기대할 수 있는 결과일 것이다.

초등 수학 학습을 위한 소켓 기반 멀티플레이형 게임 서비스의 설계 및 구현 (Design and Implementation of Socket-based Multi-player Game Service for Elementary Mathematics Learning)

  • 김성완
    • 서비스연구
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    • 제6권2호
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    • pp.175-184
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    • 2016
  • 오락적 기능을 가지고 있는 교육용 컴퓨터 게임 서비스는 학생들이 학습에 대한 흥미를 높일 수 있도록 도와주는 매력적인 도구로 활용되고 있다. 특히, 수학 과목은 교육용 컴퓨터 게임 서비스가 가장 효과적으로 적용될 수 있는 대표적인 교과목이다. 기존에 개발된 게임 서비스는 대부분 단일 사용자 혹은 2명이 게임에 참여하는 형태이며 문제로 제시된 수식의 답을 단순히 찾는 방식으로 진행된다. 본 논문에서는 교육용 게임 서비스 요구 사항을 준수하고 특히 TCP/IP 소켓 프로그래밍 기술을 기반으로 여러 학습자가 동시에 게임에 참가 할 수 있는 멀티플레이형 게임 서비스를 설계 및 구현하였다. 또한, 수 감각의 신장을 유도하기 위해 단순히 수식의 답만 구하는 것이 아니라 학습자 스스로 여러 수식을 합성하고 선택 할 수 있도록 게임 규칙을 설계하여 적용하였다. 마지막으로 제안 게임 서비스를 교육용 게임 서비스 요구사항에 따라 비교하여 적합성을 확인하였다.

Does the Addition of Visual Feedback Improve Postural Vertical Training in the Patients with Pusher Syndrome After Stroke?

  • Lee, Jang-Tae;Chon, Seung-Chul
    • 대한물리의학회지
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    • 제12권3호
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    • pp.33-42
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    • 2017
  • PURPOSE: To compare postural vertical training with and without visual feedback for improving functional recovery in post-stroke hemiparesis patients with pusher syndrome. METHODS: This study used a single-subject research with alternating design with multiple baselines. Three patients with hemiparetic post-stroke diagnosed with pusher syndrome were selected from the inpatients at the department of physical therapy of a local rehabilitation hospital. For subjective postural vertical (SPV) training with and without visual feedback, an alternating treatment was used. The subjects were randomly selected using the sequence of the two training methods upon starting the intervention, and then the training was alternated. SPV training was performed twice a day, once in the morning and again in the afternoon. Scale for contraversive pushing (SCP), postural assessment scale for stroke, and Barthel index score were used to determine the intervention-related changes. RESULTS: Compared to the average score at baseline, the average SCP score for the SPV training without visual feedback decreased from 5.3 to 2.8, from 4.6 to 3, and from 3.5 to 2.7 for subjects 1, 2, and 3, respectively. However, the average score for the SPV training with visual feedback decreased from 5.3 to 3.1, from 4.6 to 3.5, and from 3.5 to 3.3 for subjects 1, 2, and 3, respectively. CONCLUSION: Postural vertical training without visual feedback may be more beneficial than postural vertical training with visual feedback for improving pushing behavior and functional activity in stroke patients with pusher syndrome.