• Journal of rehabilitation welfare engineering & assistive technology
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• v.11 no.4
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• pp.323-330
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• 2017

Knee sleeve has been used for prevention of sport injuries as well as rehabilitation. To investigate prevention of sport injuries of knee sleeve, it is important to evaluate balance associated with proprioception. The aim of this study was to evaluate the effects of a knee sleeve with a pad that stimulate to golgi tendon organ (GTO_PAD) on proprioception and balance ability. Five healthy males were participated for the study. They were asked to reenact target angle with Biodex and perform one leg standing with knee sleeve and knee sleeve with GTO_PAD. There was no significant difference in %Target angle, but the value of %Target angle was higher in subjects wearing knee sleeve with GTO_PAD than only knee sleeve, except for one subject. During one leg standing, time duration was increased in subjects wearing knee sleeve with GTO_PAD. The length of center of pressure in x-axis (COPx) and COP in y-axis (COPy) were decreased when wearing knee sleeve with GTO_PAD (COPx : $162.06{\pm}58.99mm$ in knee sleeve vs. $149.03{\pm}45.30mm$ in knee sleeve with GTO_PAD, COPy : $310.79{\pm}115.89mm$ in knee sleeve, $291.57{\pm}76.53mm$ in knee sleeve with GTO_PAD). There was significant differences in INI_transition, steady, and LAT_transition phase (all, p < 0.05). These findings support that wearing knee sleeve with GTO_PAD might enhance proprioception and balance.

• Proceedings of the Korean Society of Machine Tool Engineers Conference
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• 2002.04a
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• pp.440-445
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• 2002

공압쿠션실린더(${\psi}80{\times}500^{st}$)의 쿠션장치인 쿠션슬리브(${\psi}20{\times}28^{st}$) 4종(Model #a, Model #b, Model #c, Model #d) 모델을 제작하여 수직하강하는 실린더에 각각 장착한 후, 각 모델에 따라 압력과 부하 특성을 비교하였다. 동일한 실험조건인 공급압력($5kg_{f}/$\textrm{cm}^2$)과 부하하중($70kg_{f}$)에서 각 모델별 실험을 실행하였다. 각 모델별 실험에서, Model #c의 쿠션슬리브인 경우가 가장 적합한 형상임을 알 수 있었다.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.10 no.7
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• pp.973-984
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• 1999

This paper presents a method of moments with the transmission line theory to analyze the sleeve dipole array antennas and analyses characteristics of that. There were several considerations for analysis of the method of moments. First, the method of moments were applied at both of the sleeve dipole elements and the coaxial line because the current flows on both of them. Second, the feed voltages of each sleeve dipole element were obtained by using a transmission line theory because the feeding structure is fed by coaxial line in series. Third, the series reactance between the coaxial line and the open side of the sleeve was considered as impedance loading on the antenna. The radiation patterns and current distributions from the numerical results were considered as variation of the feed distances and frequencies. To verify the validity of our method, 4 elements sleeve dipole array antennas with 1 λg distance were fabricated and measured, and then the measured radiation patterns were compared with the numerical results. The measured results were confirmed a good agreement with the numerical results.

• The Research Journal of the Costume Culture
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• v.21 no.5
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• pp.742-754
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• 2013

This study aims to conduct a investigation on the gusset of a Kimono sleeve to achieve excellent movability through an evaluation of its fit wearing by conducting comparative research in terms of the length of the gusset pattern according to sleeve angle, which having a great effect on the wearing and activity of the top of a Kimono sleeve. A prototype was manufactured by developing the basic Kimono sleeve based on the method of Ernestine Kopp's basic bodice pattern. The sleeve angles which was applied to the prototype pattern of the Kimono sleeve ware approximately $50^{\circ}$, $70^{\circ}$ and the gusset was diamond-shaped which has a width of 10cm and lengths of 9cm, 10cm and 11cm. As a result, in the case of $55^{\circ}$ of the sleeve angle, the angle was gradually increased as the length of gusset was extended, although, in the case of $68^{\circ}$ of the sleeve angle, there was not remarkable effects between increased gusset length and the value of the angle. This result could be analyzed that the gusset did not affect remarkably since the sufficient movability was gained with only the angle in the case of $68^{\circ}$. Also, in the results of experiment on $55^{\circ}$ angle, as 9cm, 10cm and 11cm of length of gusset commonly indicated over $70^{\circ}$ in average, it was found that the movability was obtained sufficiently in every part.

• The Journal of the Korea institute of electronic communication sciences
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• v.17 no.4
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• pp.563-570
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• 2022

We designed a biconical antenna with sleeve baluns that exhibited an improved radiation pattern from 3-40 GHz. In the antenna, the edges of the ring of the upper cone are blended to a cylinder. Sleeve baluns operating at specific frequencies are connected to the antenna to minimize leakage currents on the surface of the feeding coaxial cable. The radiation pattern was improved with the sleeve baluns, and the angular 3-dB beamwidth ranged from 67.1-101.1° over 3-40 GHz, which is much broader than the 21-99° of the conventional antenna.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.46 no.6
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• pp.487-495
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• 2018

Experimental analysis of the spray characteristics of the movable sleeve injector, which can simultaneously control the area of the annular gap and the pintle gap, has been studied and a method for controlling the uniform performance over a wide thrust range has been studied. It is confirmed that the design flow rate is not satisfied when the constant pressure difference is set regardless of the opening distance of the sleeve. In order to improve this, the differential pressure in the annular gap and the pintle gap was applied differently according to the opening distance. It was confirmed that the design flow rate was satisfied within the operating range and thrust control was linear from 25% to 100% in linear sleeve area.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.1
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• pp.79-87
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• 2016

In this paper, concrete base to sleeve connections of hybrid substructures for offshore wind turbines were suggested and investigated experimentally. Punching shear strength tests with well-instrumented three connections under different reinforcement ratios and loading conditions were conducted to investigate the punching shear strength and the behavior of the concrete base to a sleeve connection. The test results showed that the punching strength and stiffness of the connections are affected mainly by the reinforcement ratios. The loading conditions with an axial load and proportional moment cannot affect the stiffness but affect the strength of the connections because of the axial load-moment interaction. The punching shear failure and critical section of the each test specimen are also discussed.

• Journal of Korean Society of Steel Construction
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• v.17 no.4 s.77
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• pp.419-429
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• 2005

The objective of this study is to clarify the structural features of members consisting of a connection, as part of the previous study on the CFT column-to-beam tensile connection with a combined cross diaphragm. This connection has the following merits: it evenly distributes the stress on the beam flange and the diaphragm and reduces the stress concentration by improving the stress transfer route and restraining the abrupt deformation of the diaphragm. Finite element analysis was performed to find out the stress transfer through the sleeve, which is an important member of the connection with a combined cross diaphragm. The length and thickness of the sleeve were used as variables for the analysis. The analysis results showed that the length and thickness of the sleeve did not influence the capacity of the connection and played the role of a medium for the transfer of the stress from the diaphragm to the filled concrete. It was proposed that the appropriate length of the sleeve have the same value as the diameter of the sleeve and that the appropriate ratio of the sleeve diameter to the sleeve thickness be 20. Two equations for the evaluation of the load carrying the capacity of the connection were also proposed through the modification of the evaluation equation suggested in the previous study.

• The Journal of the Korea institute of electronic communication sciences
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• v.13 no.3
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• pp.533-538
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• 2018

For WLAN dual-band operation, a modified Yagi dipole antenna is presented. The modified dipole antenna consists of a dipole antenna with open sleeves and parasitic elements. The parasitic elements are used for the practical application of the radiation patterns and high-gain operation at the WLAN dual band. The experimental results showed that the achieved impedance bandwidths were 320 MHz (2.4 to 2.72 GHz) and 640 MHz (5.04 to 5.68 GHz), respectively. The measured maximum gain at the two WLAN bands was 7.74 dBi and 6.93 dBi, respectively.

• Journal of the Korean Society for Railway
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• v.20 no.2
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• pp.257-264
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• 2017

The PC (Precast Concrete) construction method is a technique where concrete members that have been produced in a plant are constructed on site. Thus, continuity and secure integration of a structure that can be obtained by connecting rebars at splicing joint for PC members are the main areas of concern for this method. To evaluate the splicing and bonding performance according to application of a splice sleeve for connecting rebar in this research study, the diameter of rebar, development length, grouting strength etc. were set as variables. The performance and stiffness of splicing according to the development length of grout strength were measured and evaluated. In addition, by conducting comparative analysis on each of the variables, the factors that affected the splice sleeve for connecting rebar were discussed. The results confirmed that the strength and stiffness of the splice sleeve for connecting rebar were significantly affected by the development length while the increase in performance according to grout strength was not as significant.