• 제어로봇시스템학회:학술대회논문집
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• 2000.10a
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• pp.95-95
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• 2000

In this study, the LLI software in the Profibus is developed by using MFC and API of visual C++. This paper presents the implementation method of LLI protocol. Software of LLI protocol was implemented as Window-based program and DOS-based program for PC and sensor module, respectively.

• Biomedical Science Letters
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• v.13 no.3
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• pp.223-230
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• 2007

Low power laser and neuromuscular electrical stimulation have been utilized in many clinical applications for the treatment of musculoskeletal lesion. This study was to investigate the effects of low power He-Ne IR laser and neuromuscular electrical stimulation on the change of the serum biochemical components in experimentally induced muscle injured rats. The twenty Sprague-Dawley male rats were randomly assigned to the 4 groups: the normal group (n=5), the control group (n=5), the low power laser irradiation group (LLI) (n=5) and the neuromuscular electrical stimulation group (NMES) (n=5). The experimentally induced muscle injury was induced by the subcutaneous injection of a 0.1 ml Freund's Complete Adjuvant into the right hind paw and calf muscles in control, LLI and NMES groups. The LLI group was irradiated with He-Ne IR laser for 5 minutes every day during 10 days. Also, the NMES group was electrically stimulated 15 minutes every day during 10 days. The normal and control groups were not received with any therapeutic intervention. The authors performed tests which were the concentration of the serum biochemical components to detect the effects of therapeutic interventions. The results were as follows: 1. The level of the aspartate aminotransferase (AST) was significantly decreased in the LLI and NMES groups compare to the control group. 2. The level of the serum lactate dehydrogenase (LDH) was significantly decreased in the LLI and NMES groups compare to the control group. 3. The level of the serum creatine kinase (CK) was significantly decreased in the LLI and NMES groups compare to the control group. From the results, we could come to the conclusion that low power laser and neuromuscular electrical stimulation could be accelerating healing processes of skeletal muscle injury and further clinical work will be required.

• Journal of the Korean Society of Physical Medicine
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• v.2 no.2
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• pp.183-194
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• 2007

Purpose : The purpose of this study was to evaluate influence of therapeutic exercise on functional leg length inequality(LLI). Methods : The subjects were consisted of thirty patients who had Leg length inequality(LLI) of more than 10mm(l6 females. 14 males) from 20 to 35 years of age(mean aged 24.23). All subjects randomly assigned to contract-relax exercise of proprioceptive neuromuscular facilitation(PNF) group(n=15), control group(n=15). Contract-relax exercise group received contract-relax exercise about 10 minutes with therapeutic massage about 15 minutes for 3 times per week during 4 weeks period. Control group not received intervention during 4 weeks period. The tape measure method(TMM) was used to measure functional Leg length inequality. Biodex System 3 Pro was used to measure strength of Knee extension & flexion. All measurements of each subjects were measured at pre-test, 2weeks post-test and 4weeks post-test. Results : 1. The LLI of contract-relax exercise group was significantly reduced according to within treatment period(p<.05), most significantly reduced between pre-test and post-test(p<.05). Contract-relax exercise group significantly more reduced than control group(p<.05). 2. The knee extension strength of contract-relax exercise group was significantly increased according to within treatment period(p<.05), most significantly increased between pre-test and post-test(p<.05). Contract-relax exercise group significantly more increased than control group(p<.05). 3. The knee flexion strength of contract-relax exercise group was significantly increased according to within treatment period(p<.05), most significantly increased between pre-test and post-test(p<.05). Contract-relax exercise group significantly more increased than control group(p<.05). Conclusion : Contract-relax exercise applied with therapeutic massage can reduce LLI and increased lower extremity muscle strength.

• Proceedings of the Korea Multimedia Society Conference
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• 2004.05a
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• pp.143-146
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• 2004

무선 사용자의 증가에 따라 802.11 표준에 대한 취약점이 대두되었다. 무선랜에서 보안을 위한 IEEE 워킹 그룹에서는 EAP, 802.1x, RADIUS, TKIP, 802.lli등의 표준안을 제시 하여 최근 WPA 가 Wi-Fi 에 의해 802.lli의 중간 단계로써 제안되어 구현되고 있다. 본 논문에서는 향후 각 회사 별 WEP 취약점 보완을 위한 패켓단위의 IV변경을 PRF 알고리즘에 기반하여 암호화를 리눅스 디바이스 드라이버 레벨에서 시험 구현하였다. 임베디드 시스템에 적용하기 위한 구현 타당성을 위하여 PXA255 프로세서에서 client를, 인텔 PC에서 HOST AP 환경을 시험환경으로 사용하였다.

• Journal of Korean Medicine Rehabilitation
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• v.18 no.1
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• pp.173-185
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• 2008

Objectives : The purpose of this study was to observe the effect of Bong (a type of stick which is called bong) Chuna manual therapy (CMT) on the correction of posterior inferior (PI) ilium deviation, and evaluate changes of pain intensity and Oswestry Disability Index (ODI) for the treatment of low back pain. Methods : We measured leg length inequality (LLI), as an indicator of correction of PI ilium, before and after the Bong CMT twice immediately, and also checked the change of LLI in the course of 10 times of treatment. Ten times of Bong CMT with oriental medical treatment, such as acupuncture and bee venom pharmacopuncture, were performed not only to correct the PI ilium deviation but also to alleviate pain. Visual Analog Scale (VAS) and Oswetry Low-back Pain Disability Index (ODI) score were scored to evaluate the pain and function of low back. Results : In this study, LLI was decreased in general while we performed correction of PI ilium deviation immediately, also effectively decreased comparing between before and after 10 times of Bong CMT, Bong CMT with oriental medical treatment improved pain and function of low back. Conclusions : These results suggest that Bong CMT may be an effective method for the correction of PI ilium deviation. However more rigorous study should be followed because of small cases report.

• Journal of the Korean Society of Physical Medicine
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• v.2 no.2
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• pp.101-112
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• 2007

Purpose : The purpose of this study was to evaluate influence of sacroiliac joint mobilization on lower extremity muscle strength. Methods : The subjects were consisted of thirty patients who had Leg length inequality(LLI) of more than 10mm(16 females. 14 males) from 21 to 41 years of age(mean aged 24.87). All subjects randomly assigned to sacroiliac joint mobilization group(n=15), control group(n=15). sacroiliac joint mobilization group received sacroiliac joint mobilization about 10 minutes for 3 times per week during 4 weeks period. Control group not received intervention during 4 weeks period. The tape measure method(TMM) was used to measure functional Leg length inequality. Biodex System 3 Pro was used to measure strength of Knee extension & flexion. All measurements of each subjects were measured at pre-test, 2weeks post-test and 4weeks post-test. Results : 1. The LLI of sacroiliac joint mobilization group was significantly reduced according to within treatment period(p<.05), most significantly reduced between pre-test and post-test(p<.05). sacroiliac joint mobilization group significantly more reduced than control group(p<.05). 2. The knee extension strength of sacroiliac joint mobilization group was significantly increased according to within treatment period(p<.05), most significantly increased between pre-test and post-test(p<.05). sacroiliac joint mobilization group significantly more increased than control group(p<.05). 3. The knee flexion strength of sacroiliac joint mobilization group was significantly increased according to within treatment period(p<.05), most significantly increased between pre-test and post-test(p<.05). sacroiliac joint mobilization group significantly more increased than control group(p<.05). Conclusion : sacroiliac joint mobilization can reduce LLI and increased lower extremity muscle strength.

• Journal of Korean Medicine Rehabilitation
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• v.19 no.2
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• pp.187-202
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• 2009

Objectives : The purpose of this study is to investigate the efficacy of adjusting leg length inequality(LLI) by chuna manual treatment for post-stroke hemiplegia. Methods : 39 patients with stroke-originated hemiplegia who had leg length inequality were included in this study. Chuna manual treatment at pelvic girdle was applied to 20 patients and they had been treated by general oriental rehabilitation therapy(test group). The other 19 patients had been treated by general oriental rehabilitation therapy only(control group). Outcomes were assessed by Modified Barthel Index(MBI), Berg Balance Scale(BBS), lower extremity Fugl-Meyer Assessment(FMA) at the point of beginning and end of the study. Results : 1. In terms of activity of daily living(ADL), test group showed statistically meaningful differences compared to control group(p<0.05). In subacute group(onset had been past under 6 months), test group didn't showed statistically meaningful differences compared to control group. In chronic group(onset had been past over 6 months), test group didn't showed statistically meaningful differences compared to control group. 2. In terms of lower extremity function and balance, test group showed statistically meaningful differences compared to control group(p<0.05). In subacute group, test group didn't showed statistically meaningful differences compared to control group. In chronic group, test group showed statistically meaningful differences compared to control group(p<0.01). 3. In terms of lower extremity function of hemiplegic side, test group showed statistically meaningful differences compared to control group(p<0.05). In subacute group, test group didn't showed statistically meaningful differences compared to control group. In chronic group, test group showed statistically meaningful differences compared to control group(p<0.05). Coclusions : Adjusting LLI by chuna manual treatment is efficacious for rehabilitation of stroke-originated hemiplegia, in terms of ADL, balance and lower extremity function, and is especially efficacious for chronic patients.

• Journal of KIISE:Information Networking
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• v.32 no.3
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• pp.327-338
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• 2005

Since the IEEE 802.11 wireless LANs were known to have several critical weaknesses in the aspect of security, a lot of works have been done to reduce such weaknesses of the wireless LAN security, Among them IEEE 802.lli may be the ultimate long-term solution that requires new security platform with new wireless LAM products. However, it might not be the best solution for small organizations due to its high cost where the cost is a critical issue. This paper proposes FR-WEP, a light-weight key management for wireless LANs that can be used with small changes of the existing Products. FR-WEP is an extension to a lightweight key management, WEP'(9), which was proposed lately. It makes up for the weak points of WEP' by providing lightweight mutual authentication with both host keys and user keys, and seamless key-refresh for authenticated users with fast re-authentication. It would be a good alternative to the heavy standards for wireless LAN security, especially to small organizations hoping for better security.

• Proceedings of the Korean Information Science Society Conference
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• 2003.04a
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• pp.371-373
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• 2003

최근에 공공장소에서의 보다 안정적이고 고속의 무선 인터넷 접속에 대한 욕구가 커지면서 무선랜에 대한 수요가 많아지고 있고, 유무선 사업자들은 무선랜 시장을 선점하기 위해서 서비스를 서두르고 있다. 이와 같은 무선랜환경에서 안전하게 사용자를 인증하고 서비스를 제공하기 위한 표준으로 802.laa와 802.11i가 있다. 이와 같은 802.laa와 802.11i를 지원하는 액세스포인트를 위해서는 두 표준을 지원할 수 있는 라디우스 클라이언트가 필요하다. 본 논문에서는 위의 액세스포인트가 라디우스 프로토콜을 사용하여 무선단말 사용자를 인증시켜 주고 WEP(Wired Equivalent Privacy)을 위한 키를 교환할 수 있는 라디우스 클라이언트를 설계하고 구현하였다.

• Progress in Superconductivity and Cryogenics
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• v.7 no.1
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• pp.47-50
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• 2005

The AC loss is an important issue in the design of the high temperature superconductor (HTS) power cables, which consist of a number of lli 2223 tapes wound on a former. In the cables, the tapes have different critical currents intrinsically. And they are electrically connected to each other and current leads. These make loss measurements considerably complex, especially for short samples of laboratory size. In this work we have prepared a multi-tape conductor composed of Bi-2223 tapes. The at losses of the conductor have experimentally investigated. The loss tests indicate that the effect of tapes critical currents on AC loss measurement in the multi tape conductor is negligible only if currents in the tapes flow uniformly Moreover, the measured tosses of the conductor are in good agreement with the sum of the transport losses in the tapes. However, in the case of non-uniform current distributions, the measured AC losses considerably depend on the current distribution parameter of the positioning of a voltage lead. Thus special cautions should be needed for the measurement of the true AC losses in the short power cable samples.