시각차단을 적용한 중재방법이 아급성기 뇌졸중 환자의 기능적능력 및 보행에 미치는 영향

윤현식 한국신경근육물리치료학회 2024 한국신경근육재활학회지 Vol.14 No.2

The purpose of this study was analyse the effect of the sit-to-stand exercise with visual deprivation rehabilitation intervention on functional ability and gait performance of subacute stroke patients. The subjects of the study were 22 sub-acute stroke patients. An onset time of less than 6 months were included in the study (subacute stage stroke patients). They are allocated in the visual deprivation group (n=11) and conventional physical therapy group (n=11) and observed for 30 min/1 session, 5 days a week for 4 weeks. Power tract, Timed Up & Go Test (TUG), 10M Walking Test (10MWT), and 6 Minute Walking Test (6MWT) were performed to evaluate the muscle strength, balance, and gait of stroke patients. In this study, We observed significant differences in the muscle strength, TUG, 10MWT as well as 6MWT between the conventional physical therapy and visual deprivation group (p<.01). visual deprivation intervention showed significant improvements in muscle strength(knee extensor muscle & ankle plantar flexor muscle), TUG, 10MWT and 6MWT. Collectively, our research provides the clinical evidence of optimal neurorehabilitation in subacute stroke patients. As a result, it is concluded that combining the intervention with visual deprivation in future clinical practice will help to improve the strength, balance, and walking ability of stroke patients more effectively.

마이크로 프로세서用 가상기억체제에 關한 硏究

尹賢植 忠州大學校 1985 한국교통대학교 논문집 Vol.19 No.1

This thesis introduces a virtual memory system which may be connected to the memory bus of a host computer. The sistem is based on the use of a separate processor to interface to the auxiliary memory and perform all the processing related to manging the virtual memory. The proposed approach provides a virtual memory that is transparent to the host processer, with one exception. When a memory reference generated by the host result in a pag efault, a long delay is encountered. This delay corresponds to the time taken by the virtual memory controller to carry outa page transfer. Bubble memory devices are used to implement the auxiliary memory. The suitability of bubble memories in this environment is discussed in the thesis.

最小테스트數를 要하는 論理回路의 實現에 關한 硏究

尹賢植 忠州大學校 1982 한국교통대학교 논문집 Vol.15 No.1

This paper is an investigation of the design of combinational logic circuits which require a minimal number of fault detection tests. Based on the path sensitizing concepts, the patterns for the primary input gates of the network are defined, and then it is shown that, arranging these predefined test patterns according to the path sensitizing characteristics of the given network structures, the minimal complete test sets for fan-out free combinational networks can be found easily. It is also shown that, taking into account the fanout paths sensitizing compatibility, the proposed method can be extended to the irredundant reconvergent fan-out networks.

잉여수계 신경망의 고속 연산 알고리즘에 관한 연구

尹賢植 忠州大學校 1998 한국교통대학교 논문집 Vol.33 No.2

We propose a design algorithm for fast computation and shrinking the hardware size of the sigmoid function generator in digital neural networks(DNN). Because the DNN is composed of massive distributed parallelism and a lot of data buses, it needs a high speed processors and small hardware structure in the same time. The proposed algorithm is superior to the digital neural network system with floating point processing structure in the same conditions. From the results of computer simulation, Look-up table should be taken larger size in order to converging target error under 10??, because accuracy of neural network applications decide modulo and in that case, sigmoid function values in the look-up table are changed with I/O values and error degrees. The proposed algorithm is avaliable to the pattern recognition field for the merit of residue number system.

Mechano-Responsive Lateral Buckling of Polymeric Structures

윤현식 한국고분자학회 2017 한국고분자학회 학술대회 연구논문 초록집 Vol.42 No.1

페이지 기억체계를 지닌 데이타흐름구조의 설계

윤현식 忠州大學校 1986 한국교통대학교 논문집 Vol.20 No.1

The paper presents a data flow architecture with a paged memory system to hold both data flow programs and data structures. The token labeling mechenism is coupled with the memory management system in order to provide for each token a unique memory location. The instruction format allows instructions with multiple operands and multiple destinations for each result Data structures are held in memory while pointers to the structures are circulating as tokens.

構造記述函數에 의한 組合回路의 테스트 제너레이션에 關한 硏究

尹賢植 충주대학교 1983 한국교통대학교 논문집 Vol.16 No.1

This paper presents a method for generating tests for combinational circuits form tructure description functions(SDF) that represent the circuit structure and its gical function. The SDF, Called and “Equivalent Fanout-free From(EFF)”, defined and an algorithm for deriving the EFF is presented, A “path difference” defined as an efficient tool for generating tests. And a necessary and sufficient edition for a path to be sensitized is given by using the path difference. e relation between the path difference and Boolean difference is also shown. Finally ne experimental results are presented.

애드혹 시스템을 위한 비디오 스트리밍에 관한 연구

윤현식 忠州大學校 2007 한국교통대학교 논문집 Vol.42 No.-

Now-a-days, wireless communication network technology has created variety types of advanced wireless systems. This paper accomplishes the research of Ad-Hoc wireless networks technology to apply wireless multimedia streaming services. specially, to introduce embedded multimedia streaming system. The result of study in this paper will provide the more efficient streaming video and audio services in the field of Ad-Hoc wireless networks.

도시지역 합류식 하수관거 월류수의 오염부하 특성

윤현식,이두진,이영대 漢陽大學校 環境科學硏究所 2003 環境科學論文集 Vol.24 No.-

합류식 하수관거 월류수(Combined sewer overflow, CSOs)는 도시 인근 방류선 수체의 주요한 오염원의 하나로 알려져 있으며, 특히 강우초기 월류수의 경우 높은 오염부하가 일시에 방류되어 심각한 문제를 야기시킨다. 본 연구에서는 도시지역 합류식 하수관거 월류수의 발생 및 오염부하 특성을 분석하고, 초기강우에 의한 세척효과, 오염원 기여도 평가 등을 수행하였다. 강우사상에 따라 다소 차이가 있었으나, 합류식 하수관거 월류수가 건기하수에 비하여 오염부하가 전반적으로 높았으며, 특히 월류초기에는 매우 고농도로 측정되었다. 근사적인 오염물질 수지식을 통하여 관거퇴적물의 재부유에 의한 오염기여도가 가장 높았다. 무차원 L(V)곡선이 초기세척현상(First flush)을 잘 표현하였으며 SS, CODcr, T-P, T-N의 순으로 초기세척효과가 크게 나타났다. Combined sewer overflows(CSOs) have been considered as a major cause of water quality deterioration of natural water-courses in the vicinity of the heavily urbanized areas. The factors defining the magnitude and occurrence of CSOs are site specific. It is important to know exact properties of pollutants contained in CSOs to address water quality impacts that are caused by CSOs inputs to the receiving waters. This should be accompanied with an integrated analysis, evaluation programs, thus allowing us to an appropriate technology to alleviate the impacts. Pollutant concentrations measured during the storm events were generally higher than those of dry weather conditions except for T-N parameter and observed significant higher concentrations at the initial phase of CSOs. Based on the rough estimation by the proposed pollutant mass balance, it was found that a main part of wet weather pollutional loads originates from the resuspension of sewer bottom sediments. The dimensionless L(V) curves for determining whether first flush phenomenon occur or not were well described the pollutant flushing. These results show that a given fraction of volume contains a load of SS higher than CODcr, T-P, T-N in the initial phase of wet weather runoff.

기호정합에 의한 문서영상데이타의 압축

尹賢植 충주대학교 1990 한국교통대학교 논문집 Vol.24 No.-

Digital facsimile is an increasingly important component in office automation. Techniques for the compression of bi-level scanned image data are vital to the efficient storage, retrieval and transmission of office documents. A scheme for the compression of typewritten and printed documents is described. It incorporates a new pattern matching algorithem which can handle a variety of styles and sizes of text more efficiently then existing method.