• Journal of the Korea Academia-Industrial cooperation Society
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• v.10 no.12
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• pp.3879-3887
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• 2009

The purpose of this study was to investigate the effect of mental practice about functional performance of affected limb to unilateral neglect and ADL(Activities of Daily Living) in person with stroke. A single subject experimental research with ABA design was employed in this study. The experiment formed 18 sessions in total: 5 sessions for baseline, 10 sessions for mental practice treatment, and 3 sessions for the second baseline. Mental practice was composed of performing 3 functional activities(dressing clothes, make-up with materials and arrangement, folding clothes). It took 5 minutes at once and 15 minutes in total daily. The unilateral neglect was measured by reading test, writing test, and Baking Tray Task. ADL was assessed by COPM. The results indicated that unilateral neglect test scores were all reduced, and the score of COPM was clinically significant. Mental practice for performing of functional activities was effective method to reduce unilateral neglect and improve ADL in person with stroke.

• Annual Conference on Human and Language Technology
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• 2009.10a
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• pp.251-254
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• 2009

띄어쓰기는 한글 맞춤법에 명시되어 있는 규정에 따르면 되지만, 근본적으로 명확한 정의가 내려있지 않으며 복잡하고 애매모호한 기준들이 얽혀 사용자들이 혼란을 겪는 등 많은 오류를 일으키고 있다. 이에 맞춤법 오류에 대한 원인을 찾아 체계적인 교육이 이루어지거나, 맞춤법을 수정 및 보완할 필요성이 있다 하겠다. 본 연구는 사용자들의 편의성을 우선시하여 맞춤법에 있어 논리적 근거를 마련하고 한국어 정보처리의 양상을 살펴보는 것에 의의가 있다. 이에 비교적 띄어쓰기 기준이 명확한 관형어절에 초점을 두어 띄어쓰기가 읽기에 어떤 영향을 미치는지 알아보고자 실시하였다. '관형사 + 명사' 구조와 '~적 + 명사' 구조의 관형어절이 포함된 104개의 문장을 가지고 2개의 목록을 만들었다. 목록 간에는 띄어쓰기 여부가 반대이며 피험자는 목록 중 하나를 경험하였다. 하나의 문장을 끊어서 제시하여 피험자는 읽는 데로 space bar key를 누르는 자기 읽기 조절 과제를 시행하였고, 이어서 문장에 대한 질문을 통해 이해도 검사를 실시하였다. 관형어절을 읽는 평균 속도를 분석한 결과 미세한 차이가 있었으나, 유의미하지는 않았다. 이는 관형어절에 있어서 띄어쓰기의 영향이 크지 않음을 의미한다고 볼 수 있겠다.

• Proceedings of the Korean Information Science Society Conference
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• 2006.10a
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• pp.130-134
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• 2006

본 논문에서는 메타 테이블(meta table)을 이용한 광선(ray)과 삼각형(triangle)들의 교차검사를 할 수 있는 효율적인 레이트레이싱 알고리즘을 제안한다. 기존의 kd-tree 탐색은 깊이 우선 탐색을 하면서 이미 방문했던 노드들을 방문하지 않기 위해서 스택을 이용하는 방법을 택하고 있는데, 본 논문에서 제안하는 알고리즘은 스택을 사용하지 않고 읽기 전용으로만 쓰이는 메타 테이블을 둠으로써 기존의 트리 탐색 과정보다 효율적으로 트리의 리프 노드들에 접근할 수 있도록 하였다. 실험결과 제안된 레이트레이싱 알고리즘이 기존의 kd-tree의 트리 탐색보다 노드 방문을 5배 이상 적게 하였고, 이미지 렌더링 시간도 총 2배 정도 향상됨을 볼 수 있었다.

• Proceedings of the Korean Information Science Society Conference
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• 1999.10a
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• pp.287-289
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• 1999

다등급 보안 자료기지 관리체계는 하위 등급의 자료에 대한 쓰기 연산 및 상위 등급의 자료에 대한 읽기 연산을 불허하여, 상위 등급의 자료가 하위 등급의 거래에 노출되는 것을 방지한다. 하지만, 전통적인 다등급 보안 자료기지 관리체계는 서로 상이한 등급간 거래의 공모로 생성될 수 있는 비밀 경로는 차단할 수 없다. 이러한 비밀 경로의 생성을 막기 위한 여러 연구가 다중 버전의 환경 및 제한된 버전의 환경 하에서 수행되어 왔다. 하지만 다중 버전에 기반한 기법은 상위 등급의 거래가 지나치게 오래된 버전의 자료를 읽을 뿐 아니라 버전 관리를 위하여 추가적인 부담이 요구된다는 단점이 있고, 제한된 버전에 기반한 기법은 항상 상위 등급 거래의 지연 및 철회를 강요한다는 단점이 있다. 본 논문에서는 제한된 버전 하에서 직렬화 가능성 그래프 검사 기법을 사용하여, 각 보안 등급간의 형평성을 높일 수 있는 비밀경로 생성 방지 기법을 제안한다.

• Journal of the Korea Convergence Society
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• v.9 no.5
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• pp.219-229
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• 2018

The purpose of this study was to investigate the relationship among Exercising Activity, muscle mass, Muscular strength and cognitive function of 274 elderly people aged 65 years and older living in Seoul and Gyeonggi-do As for the data collection methods, were measured the Exercising Activity, muscle mass and muscular strength and the Korean version of Mini Mental State Examination(MMSE-K) and digit span test were measured. The results are as follows First, there was a statistically significant correlation between Exercising activity, muscle mass, muscular strength, and cognitive function of the elderly. Second, Exercising activity of the elderly showed a positive (+) influence on muscle mass, muscular strength, and cognitive function. Third, the muscle mass of the elderly showed a statistically significant (+) influence on muscular strength and cognitive function. Fourth, the strength of the elderly showed a positive (+) influence on cognitive function.

• Journal of Korea Spatial Information System Society
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• v.5 no.2 s.10
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• pp.69-82
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• 2003

Mobile transactions updating spatial objects are long transactions that update local objects of mobile clients during disconnection. Since a recovered transaction cannot read the write sets of other transactions committed before the recovery due to disconnection, the recovered transaction may conflicts with them. However, aborting of the recovered long transaction leads to the cancellation of all updates including the recovered updates. It is definitely unsuitable to cancel the recovered updates due to the conflicts. In this paper, we propose the recovery scheme to retrieve foreign conflictive objects from the write sets of other transactions for reducing aborting of a recovered transaction. The foreign conflictive objects are part of the data committed by other transactions and may conflict with the objects updated by the recovered transaction. In the scheme, since the recovered transaction can read both the foreign conflictive objects and the recently checkpoint read set, it is possible to reupdate properly the potentially conflicted objects.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.27 no.2
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• pp.109-118
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• 2016

Objectives: The aim of this study was to develop the computerized Comprehensive Learning Test-Reading (CLT-R) to evaluate the cognitive processes and achievements related to their basic reading ability and identify dyslexia in children and adolescents in South Korea. We also obtained the normative data and evaluated the reliability and validity of the test. Methods: We developed the CLT-R, including the word attack/nonword decoding, paragraph reading, sound blending, nonword repetition, rapid automatized naming, letter-sound matching, visual attention, orthography awareness, and digit span tests, for the purpose of diagnosing dyslexia. We investigated the reliability and validity of the tests and gathered the normative data from 399 subjects (male 48.9%), aged 5-14 years, from the last grade in kindergarten to middle school, dwelling in Seoul and Gyeonggi Province, South Korea. Results: No statistical differences were observed between the means of the tests and retests of the CAT. The mean of the correlation coefficient of the test-retest scores was 0.85. According to the construct validity test calculated by principal constant analysis using the oblique rotation method, 4 factors explained 70.0% of the cumulative variances. In addition, the normative data were obtained for all of the CLT-R subtests. Conclusion: The computerized CLT-R can be used as a reliable and valid tool to evaluate the reading achievement and reading related cognitive process in Korean children and adolescents in schools, clinics, and research institutes.

• The Journal of the Korea Contents Association
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• v.16 no.12
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• pp.600-621
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• 2016

This study aims to develop and apply the language education program model - based on balanced language education approach - on development of literacy of young children in low-income families, specially participating in Dream Start public welfare service. Development of this languge education program was based on the basic view and characteristis of balanced language education. It was progressed in accordance with Analyze-Design-Develop-implement-Evaluate(ADDIE), which is an widely-used instructional design model. Educational contents including reading skills of picture books based on whole language approach and well-structured reading and writing sequences, teaching and learning method including the principles and the strategies and teaching and learning systematic evaluation method are proposed in viewpoint of balanced language teaching approach. The application of the program was conducted targeting 20 young children participating in Dream Start welfare service from June 2015 until early November. To evaluate the effectiveness of this program, word reading inspection and nonsense word reading inspection developed by Ko, Yeon-Kyung(2002) were performed. The reflective thinking journal of visiting teachers and the satisfaction reported by parents were analysed in the qualitative research method. As a result, reading skills of young children were improved. The superiority of the program - prefernce for the picture book, interests in written languages, effectiveness of individualized language education method - was demonstrated by qualitative analysis of reflective journal. This study has the significance on presenting the executable language education model for literacy development of young children in low-income families based on balanced language education approach.

• Phonetics and Speech Sciences
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• v.11 no.3
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• pp.49-55
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• 2019

This study sought to investigate whether mean speaking fundamental frequency (SFF) can be predicted by parameters of voice and speech range profile (VRP and SRP) in Korean normal adults. Moreover, it explored whether gender differences exist in the absolute differences between the SFF and estimated SFF (ESFF) predicted by the VRP and SRP. A total of 85 native Korean speakers with normal voice participated in the study. Each participant was asked to perform the VRP task using the vowel /a/ and the SRP task using the first sentence of a Korean standard passage "Ga-eul". In addition, the SFF was measured with electroglottography during a passage reading task. Predictive factors of the SFF were explored and the absolute difference between the SFF and the ESFF (DSFF) was compared between gender groups. Results indicated that predictive factors were age, gender, minimum pitch and pitch range for the VRP (adjusted $R^2=.931$), and pitch range (in semi-tones) and maximum pitch for the SRP (adjusted $R^2=.963$), respectively. The SFF and ESFF predicted by the VRP and SRP showed a strong positive correlation. The DSFF of the VRP and SRP, as well as their sum did not differ by gender. In conclusion, the SFF during a passage reading task could be successfully predicted by the parameters of the VRP and SRP tasks. In further studies, clinical implications need to be explored in patients who may exhibit deviations in SFF.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.15 no.6
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• pp.1355-1362
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• 2011

This paper describes a multi-mode LDPC decoder which supports three block lengths(648, 1296, 1944) and four code rates(1/2, 2/3, 3/4, 5/6) of IEEE 802.11n WLAN standard. Our LDPC decoder adopts a block-serial architecture based on min-sum algorithm and layered decoding scheme. A novel way to store check-node values and parity check matrix reduces the sizes of check-node memory and H-ROM. An efficient scheme for check-node memory addressing is used to achieve stall-free read/write operations. The designed LDPC decoder is verified by FPGA implementation, and synthesized with a $0.18-{\mu}m$ CMOS cell library. It has 219,100 gates and 45,036 bits RAM, and the estimated throughput is about 164~212 Mbps at 50 MHz@2.5v.