• The Journal of Korean Physical Therapy
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• 제23권5호
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• pp.49-56
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• 2011

Purpose: The purpose of this study was to investigate the kinematic characteristics and muscle activities during the following two conditions: transition from half-kneel to standing on the affected leg and non-affected leg. Methods: Twenty-one hemiplegic patients participated in the study. A motion analysis system was used to record the range of motion and angle velocity of the hip, knee and ankle from the half-kneel to the standing position. Electromyography was used to record the activity of 4 muscles. Results: The statistical analysis showed that the minimum ROM of the hip joint was less on the affected leg during transition from half-kneel to standing. However, the minimum ROM of the knee and ankle joints was less on the non-affected leg during transition from half-kneel to standing. The angle velocity of the knee and ankle joints was less during transition from half kneeling to standing on the non-affected leg. Muscle activity of the rectus femoris and tibialis anterior was less while moving from half-kneel to the standing position on the affected leg. Conclusion: These results show that greater active ROM of the knee and ankle was required on the affected leg for transition from half-kneel to the standing position than for normal gait. Muscle activity of the rectus femoris and tibialis anterior is normally required for movement from the half-kneel to the standing position during normal gait. Further studies are needed to investigate the antigravity movement in healthy subjects and hemiplegic patients in order to completely understand the normal and abnormal movement from the half-kneel to the standing position.

• Asian Pacific Journal of Cancer Prevention
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• 제15권18호
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• pp.7769-7773
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• 2014

Background: Some tumor types are related to HIV, including non-Hodgkin lymphoma (NHL). The morbidity and mortality of NHL has remained high, even after highly active antiretroviral therapy (HAART) was introduced. We collected cases of AIDS with NHL, and evaluated the imaging features and strategies for diagnosis. Materials and Methods: There were 27 patients with AIDS and tumors confirmed by pathology. There were 9 patients with Burkitt lymphoma, 16 with diffuse large B cell lymphomas (DLBCLs), and 2 with primary central nervous system (PCNS) lymphomas. All of the patients underwent a series of imaging studies. Three radiologists analyzed the images, and any disagreement was discussed until consensus was reached. Results: The radiologic manifestations of AIDS with NHL were mainly masses and lymphadenopathy, 3 patients having one mass and 12 two or more masses. 7 patients had lymphadenopathy in one site and 3patients had lymphadenopathy in two or more sites. Coarse mucosal folds, thickening of the gastrointestinal wall, and lumen narrowing were typical manifestations of NHL within the gastrointestinal tract. There were 4 patients with masses and 5 with lymphadenopathy inthe 9 with Burkitt lymphoma, and 11 patients with masses 5 with lymphadenopathy in the 16 with DLBCLs. Conclusion: NHL is a malignancy that usually occurs in patients with AIDS. Imaging is an important method by which to evaluate lesions, masses, and lymphadenopathy. Fine needle aspiration biopsy and stereotaxis biopsy are useful methods by which to diagnose NHL.

• 한국융합학회논문지
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• 제6권5호
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• pp.303-314
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• 2015

본 연구는 중 소 섬유제조기업을 중심으로 전략실행과 MCS의 활용에 따른 기업성과와의 관계를 살펴보고자 한다. 특히 본 연구의 차별성이라고 할 수 있는 관리회계담당자 역할의 영향력을 분석하는데 목적이 있다. 연구 모형을 검증하기 위하여 한국의 중 소 섬유제조기업을 대상으로 255개의 설문지를 최종 표본으로 하여 구조방정식모형을 활용하였으며, 이를 위해 AMOS ver 18.0을 사용하였다. 연구결과 원가리더십전략과 차별화전략은 MCS 이용에 긍정적 영향을 미치고 기업성과에 직접적인 영향을 미치지 못하였다. MCS 이용은 기업의 비재무적성과에 긍정적인 영향을 미친다. 차별화전략은 MCS의 이용을 매개로 기업성과에 긍정적 영향을 미치고 원가리더십전략은 기업성과에 영향을 미치는 과정에서 MCS의 이용의 매개효과는 없다. 기업전략, 경영통제시스템의 이용, 기업성과간에 관리회계담당자의 역할수준이 조절변수로서의 효과가 있다.

• 한국철도학회논문집
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• 제11권5호
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• pp.477-481
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• 2008

본 논문은 저압계통에서 전기화재의 징후인 직렬아크의 검출방법에 대해 기술하였다. 제안한 검출회로는 전원주파수 성분을 80dB 이상 감소시킬 수 있는 저역차단주파수가 3kHz인 고역통과필터와 아크신호만을 검출하기 위한 중심주파수가 4kHz인 대역통과필터로 구성된다. UL1699에 규정된 아크발생장치를 이용하여 비선형부하인 위상제어 백열전구와 고주파발생부하인 인버터 추동 유도전동기에서 직렬아크신호를 모의하여 성능을 평가하였다. 실험 결과로부터 세안한 방식은 비선형부하와 고주파발생하에 대해서도 직렬아크신호를 정확히 구분함으로써 현재 최대 문제인 검출오류를 해결하였음이 확인되었다.

• JSTS:Journal of Semiconductor Technology and Science
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• 제11권3호
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• pp.221-228
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• 2011

This paper describes 250-Mb/s fiber optic transmitter and receiver ICs for plastic optical fiber applications using a$ 0.18-{\mu}m$ CMOS technology. Simple signal and light detection schemes are introduced for power reduction in sleep mode. The transmitter converts non-return-to-zero digital data into 650-nm visible-red light signal and the receiver recovers the digital data from the incident light signal through up to 50-m plastic optical fiber. The transmitter and receiver ICs occupy only 0.62 $mm^2$ of area including electrostatic discharge protection diodes and bonding pads. The transmitter IC consumes 23 mA with 20 mA of LED driving currents, and the receiver IC consumes 16 mA with 4 mA of output driving currents at 250 Mb/s of data rate from a 3.3-V supply in active mode. In sleep mode, the transmitter and receiver ICs consume only 25 ${\mu}A$ and 40 ${\mu}A$, respectively.

• Geomechanics and Engineering
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• 제13권1호
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• pp.161-171
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• 2017

The underlying ground state of a railway plays a significant role in maintaining the integrity of the overlying concrete slab and ultimately supporting the train load. While effective nondestructive tests have been used to evaluate the rail track system, they can only be performed during non-operating time due to the stress wave generated by active sources. In this study, finite element numerical simulations are conducted to investigate the feasibility of detecting unfavorable substructure conditions by using a moving train load. First, a train load module is developed by converting the train load into time-variant equivalent forces. The moving forces based on the shape functions are applied at the nodes. A parametric study that takes into account the bonding state and the train class is then performed. All the synthetic signals obtained from numerical simulations are analyzed at the frequency domain using a Fast Fourier transform (FFT) and at the time-frequency domain using a Short-Time Fourier transform (STFT). The presence of a void condition amplifies the acceleration amplitude and the vibration response. This study confirms the feasibility of using a moving train load to systematically evaluate a rail track system.

• 제어로봇시스템학회논문지
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• 제10권11호
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• pp.1052-1057
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• 2004

Bluetooth technology is essentially a method for wireless connectivity of a diverse set of devices ranging from PDAs, mobile phone, notebook computers, to another equipments, The bluetooth system both point-to point connection and point-to multipoint connection. In point-to multipoint connection, the channel is shared among several bluetooth devices. Two or more devices sharing the same channel form a piconet. There one master device and up to seven active slave devices in a piconet. The radio operates in the unlicensed 2.45GHz ISM band. This allows users who travel world-wide to use bluetooth equipments anywhere. Since the link is based on frequency-hop spread spectrum, multiple channels can exist at the same time. The bluetooth standard ha s been suggested that bluetooth equipments can be used in the short-range, maximum 100 meters. It has been defined that the time takes to setup and establish a bluetooth connection among devices is 10 seconds. It is a long time and may be a cause to lose a chance of finding other non-fixed devices. We propose a routing protocols for scatternets which can be used to control a mobile units(MUs) in this network. The proposed routing protocol is composed of two kinds of bluetooth information, access point(AP) and MU.

• Asian Journal for Public Opinion Research
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• 제2권2호
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• pp.103-120
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• 2015

Since 1795, 106 districts in Japan have been selected as Important Historic Preservation Districts (Juuyo dentouteki kenzoubutsugun hozon chiku [Juudenken]). The system for protection of cultural properties enables the local government to name a "Preservation District" and allows for the development of a preservation plan based on local ordinances. Moreover, the well-organized, bottom-up networks, which are groups for community development activities on the basis of local participation, play an important role in raising awareness and conducting several preservation projects in their own towns. This study mainly focused on cultural resources management in the local community. The system, which possibly bridged the gap between the local authorities and the community, was revealed. Fifty non-profit groups and active citizens, who were engaged in an advanced stage of community participation in Juudenken, were selected to be interviewed. The results then were analyzed using STAT program. The significant associations were shown by mapping the associations related to the public process of community involvement. Each variable had its own significant meaning and contributed credible indirect association to community involvement. The network mapping indicated that balancing the local economy and technical conservation was important in generating community involvement, which provided a model on how local authorities and communities could articulate and maintain their own cultural resources.

• Ocean Systems Engineering
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• 제1권1호
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• pp.31-57
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• 2011

Impact pressure due to sloshing is of great concern for the ship owners, designers and builders of the LNG carriers regarding the safety of LNG containment system and hull structure. Sloshing of LNG in partially filled tank has been an active area of research with numerous experimental and numerical investigations over the past decade. In order to accurately predict the sloshing impact load, a new numerical method was developed for accurate resolution of violent sloshing flow inside a three-dimensional LNG tank including wave breaking, jet formation, gas entrapping and liquid-gas interaction. The sloshing flow inside a membrane-type LNG tank is simulated numerically using the Finite-Analytic Navier-Stokes (FANS) method. The governing equations for two-phase air and water flows are formulated in curvilinear coordinate system and discretized using the finite-analytic method on a non-staggered grid. Simulations were performed for LNG tank in transverse and longitudinal motions including horizontal, vertical, and rotational motions. The predicted impact pressures were compared with the corresponding experimental data. The validation results clearly illustrate the capability of the present two-phase FANS method for accurate prediction of impact pressure in sloshing LNG tank including violent free surface motion, three-dimensional instability and air trapping effects.

• The Journal of Asian Finance, Economics and Business
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• 제8권9호
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• pp.177-187
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• 2021

The purpose of the research to evaluate the efficiency and productivity growth rate of some Vietnamese commercial banks in the period 2008-2020. Using input and output selection theory, the author selected 2 models, estimating the efficiency for model 1 and estimating the yield change for both the models. We have built a model to estimate the efficiency and calculate as well as decompose the productivity growth of Vietnamese commercial banks during the period of active mergers and acquisitions activities in the banking system. Based on the results of the efficiency estimation, TFP shows during mergers and acquisitions, efficiency fluctuates but in an inverted U-shape (increasing from 2008-2011 but decreasing from 2013 to 2020). The estimated results of the impact assessment model show that FDI reduces the efficiency of banks. Productivity analysis shows that 6 out of 23 banks in the study period had positive TFP growth (tfpch > 1) due to technical progress and management efficiency. The findings of this study suggest that Vietnam's commercial banking system has many opportunities to improve operational efficiency in many aspects. In which, there are opportunities to increase credit, improve governance as well as improve the technology level of each bank. In addition, along with traditional products such as deposits and loans, diversification with a wide range of products and services is an important factor to enhance customer experience and demand in commercial banks.