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A Study on Principles of the Law of Software Contracts Drafts in America (미국 소프트웨어 계약법 원칙 초안에 대한 소고)

  • Cho, Hyun-Sook
    • International Commerce and Information Review
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    • v.11 no.1
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    • pp.333-351
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    • 2009
  • The American Law Institute(ALI) has presented drafts of "Principles of the law of software contracts" to clarify and unify the law of software transactions. These principles apply to agreements for the transfer of or access to software. Providing these principles means something in software contracts. First of all, these principles seek to limit the scope to cover only contracts involving software exchanged or accessed for consideration, while UCITA includes a wide variety of "computer information". Secondly, this project is "Principles" instead of "Restatement" which means that these principles are not the law unless a court adopts it. This is for flexibility not to hinder law's adoptability of new legal issues that might be created in the future since the software industry has developed. Third, the project seek to balance between software transferor's interest and transferees to permit the use of remote disablement in limited circumstances. These principles, however, should be considered some concerns in the future work. For example, not to be a unconscionable agreement, it is better to suggest the specific click-wrap procedure and be more illustrative about what types of browser-wrap language are acceptable and what types are not.

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Optimization of Product's Tipping Position in Designing Die Face for Manufacturing Automobile Outer Panels (차체 외판의 제작을 위한 다이페이스 설계에 있어서 제품 성형방향의 최적화)

  • 박종천;조경호;이건우
    • Transactions of the Korean Society of Mechanical Engineers
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    • v.17 no.6
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    • pp.1389-1403
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    • 1993
  • A procedure has be developed to optimize the product's tipping position in designing a die face for manufacturing automobile outer panels. Two design requirements are considered in optimizing the tipping position. One is to satisfy that all the points on the product should have a uniform distribution of drawing depths. The other is to guarantee that the user-specified area on the product should first contact with the binder wrap. The problem to satisfy the design requirements described above is analogous to the flatness calculation problem in the area of metrology if some constraints can be imposed. Thus the problem can be solved by the simulated annealing method, which is one of the optimization methods. The developed procedure was tested with the real die face design problem and the usefulness was verified by the diagram of the drawing depth.

Plastic Tray와 Wrap으로 포장한 닭고기의 미생물 수준에 따른 저장 특성

  • Chae, Hyeon-Seok;An, Jong-Nam;Yu, Yeong-Mo;Jeong, Seok-Geun;Ham, Jun-Sang;Kim, Dong-Hun
    • Proceedings of the Korean Society for Food Science of Animal Resources Conference
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    • 2006.05a
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    • pp.228-232
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    • 2006
  • 닭고기를 표면에 미생물 수준을 달리하여, plastic tray와 wrap으로 포장함에 따라 저장 3일에 TBARS 값이 도체의 미생물 수준이 증가할수록 $10^2\;CFU/cm^2$ 처리구 0.064, $10^3\;CFU/cm^2$, 0.079, $10^4\;CFU/cm^2$, 0.088 mgMA/kg으로 계속 증가하는 경향을 나타내었고 저장 5일에서도 비슷한 경향을 나타내었다. VBN의 변화도 도체 내 미생물 수준이 증가할수록 전체적으로 증가하는 경향을 나타내었다. 육색에서 명도(L*), 황색도(b*)는 미생물 수준에 따라 일정한 경향을 나타내지 않았다. 미생물 수준에 따른 총 세균수는 저장 3일 $10^2\;CFU/cm^2$ 처리구에서 3.34, $10^3\;CFU/cm^2$, 3.67, $10^4\;CFU/cm^2$ 3.77 log $CFU/cm^2$로 도체 미생물 수준이 증가할수록 약간씩 증가하는 경향을 나타내었다. 이러한 경향은 저장 5일에서도 비슷한 경향을 나타내었다. E. coli의 변화는 저장 3일에 $10^2\;CFU/cm^2$ 처리구에서 1.70, $10^3\;CFU/cm^2$, 1.69, $10^4\;CFU/cm^2$ 1.77 log $CFU/cm^2$으로 $10^4\;CFU/cm^2$ 처리구에서 가장 높은 증가율을 나타내었다. 저장 5일에서도 저장 3일과 비슷한 경향을 나타내었다.

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The Immediate Effects of External Kinesio-tape Wrapping for Inner Arch Support on the Lower Leg EMG for Gait in Stiletto Heels

  • Yi, Kyungock
    • Korean Journal of Applied Biomechanics
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    • v.26 no.1
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    • pp.127-133
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    • 2016
  • Purpose: The purpose of this study was to analyze the effects of using external kinesio-tape wrapping for inner arch support on the lower extremity EMG for gait in stiletto heels. Methods: Subjects for this study were two female college students who had been wearing stiletto heels almost every day of the week for more than three years. The independent variable was the presence or absence of kinesio-tape wrap for inner arch support. Dependent variables were EMG readings for the four muscle groups: the medial and lateral gastrocnemius, the tibialis anterior, and the peroneus longus. EMG readings were taken using the NORAXON (USA). The Paired t-test within the subject repeated measure design for the presence and absence of inner arch support (p<0.05) was used via SPSS 18.0. Results: With kinesio-tape wrap for inner arch support, there was a statistically significant decrease in the muscle force mean values for the peroneus longus and the medial and lateral gastrocnemius, in the maximum muscle forces of the peroneus longus and the lateral gastrocnemius. Conclusion: External kinesio-tape wrapping for inner arch support in stiletto heels could have an effect to reduce peroneus longus, and medial/lateral gastrocnemius activities that could result in decreased fatigue and discomfort.

FSI(Fluid-Structure Interaction) Analysis for Harmonious Operation of High-Speed Printing Machine

  • Kim, Jin-Ho;Lee, Jae-Woo;Park, Soo-Hyung;Byun, Do-Young;Byun, Yung-Hwan;Lee, Chang-Jin
    • International Journal of Aeronautical and Space Sciences
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    • v.9 no.1
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    • pp.137-146
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    • 2008
  • Proper amount of entrained air and nip force should be also considered to minimize ballooning phenomenon since tight contact between a roller and web is required. In this paper, various web materials, PET(Polyester) and OPP(Oriented Poly Propylene) have been selected and investigated to satisfy high-speed printing requirement. Several web speeds, web tensions, and temperature conditions are imposed on each web materials and the pressure and gap profiles as well as nip force have been calculated. Increase of both the winding roller radius and the incoming wrap angle is considered under proper taper tension at 500 m/min of rewinding roller. By solving coupled Reynolds equation and web deflection equation simultaneously, the fluid-structure interaction process has been developed and is applied to the rewinding roller to investigate the ballooning phenomenon which causes guiding problems in high-speed printing performance conditions. By adjusting the linear taper tension, stress distribution between rewinding webs can be remarkably reduced and stable pressure and gap profile with ignorable ballooning phenomenon have been found.

Scroll Expander with Heating Structure and Their Systems for Distributed Power Source (가열구조를 갖는 스크롤 팽창기와 이를 이용한 분산발전 시스템)

  • Kim, Young Min;Shin, Dong Kil;Lee, Jang Hee
    • 유체기계공업학회:학술대회논문집
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    • 2004.12a
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    • pp.225-231
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    • 2004
  • Scroll compressor has been used extensively for refrigeration since the early 1980's for its improved efficiency, greater reliability, smoother operation, lower noise and vibration. And also, nowadays, the scroll mechanism is used for expander even though in niche market yet. But scroll expander has not been used for high-temperature and high-pressure gas, because the continuous expansion of the gas causes a wide range of temperature distribution over the whole scroll wrap that leads to differential thermal expansion of scroll elements, which results in system vibrations, noise and efficiency losses. For the scroll expander to produce power more efficiently, all of radial and radial clearances between scroll wrap must be the same. In order to reduce differential thermal expansion in addition to improvements in thermal efficiency and specific power, we propose a scroll expander with heating structure. Heat-pipe heating structure is considered as the most effective method to heat the scroll expander at a uniform temperature. This paper includes some results of preliminary study of the scroll expander with heating structure and proposals of their systems for power generation and refrigeration.

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Development of the Automatic Knee Joint Control System for a Knee-Ankle-Foot Orthosis Using an Electromechanical Clutch (전자-기계식 클러치를 이용한 장하지 보조기용 무릎관절 자동 제어 장치의 개발)

  • 이기원;강성재;김영호;조강희
    • Journal of Biomedical Engineering Research
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    • v.22 no.4
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    • pp.359-368
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    • 2001
  • A new knee-ankle-foot-orthosis(KAFO) which uses an automatically-controlled electromechanical wrap spring clutch for the knee joint was developed in the present study. It was found that the output voltage from the foot switches of the developed KAFO was proportionally increased with respect to the applied load. The output voltage from the infrared sensor also decreased as the knee flexion angle increased. The knee joint system for the new KAFO weighs only 780g lighter than any other commercially available developed system. In addition, the solenoid reduces the reaction time for the automatic control of the knee joint. The static torque of the clutch was measured for three persons, and it satisfied the normal knee extension moment during the pre-swing. Three-dimensional gait analyses for three different gait patterns (normal gait, locked-knee gait, controlled-knee gait) from five normal subjects were conducted. Controlled-knee gait showed the maximum knee flexion angle of 40.56$\pm9.55^{\circ}$ and the maximum knee flexion moment of 0.20$\pm$0.07Nm/kg at similar periods in the normal gait. Our KAFO system satisfies both stability during stance phase and free knee flexion during the swing phase at the proper period during the gait cycle. Therefore, our KAFO system would be very useful in various low extremity orthotic applications.

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Implementation of Policing Algorithm in ATM network (ATM 망에서의 감시 알고리즘 구현)

  • 이요섭;권재우;이상길;최명렬
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.26 no.12C
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    • pp.181-189
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    • 2001
  • In this thesis, a policing algorithm is proposed, which is one of the traffic management function in ATM networks. The proposed algorithm minimizes CLR(Cell Loss patio) of high priority cells and solves burstiness problem of the traffic caused by multiplexing and demultiplexing process. The proposed algorithm has been implemented with VHDL and is divided into three parts, which are an input module, an UPC module, and an output module. In implementation of the UPC module\`s memory access, memory address is assigned according to VCI\`s LSB(Lowest Significant Byte) of ATM header for convenience. And the error of VSA operation from counter\`s wrap-around can be recovered by the proposed method. ANAM library 0.25 $\mu\textrm{m}$ and design compiler of Synopsys are used for synthesis of the algorithm and Synopsys VSS tool is used for VHDL simulation of it

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Performance analysis of a scroll compressor considering quasi one-dimensional leakage modeling and heat transfer loss (준 1차원 누설모델링 및 열전달 손실을 고려한 스크롤압축기의 성능해석)

  • Gang, Tae-Gyu;Park, Gyeong-U;Jeong, Yeon-Gu;Park, Hui-Yong
    • Transactions of the Korean Society of Mechanical Engineers B
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    • v.21 no.10
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    • pp.1339-1349
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    • 1997
  • A numerical method of calculating the performance of a scroll compressor for refrigerant R-22 and R-134a is presented in this paper. A series of involute curves are employed for the scroll wrap design and the compression volume is investigated geometrically. The radial leakage flow rate through tip clearance is calculated by the two-dimensional compressible flow. On the basis of the results, quasi one-dimensional leakage modeling can be applied to the performance analysis of a scroll compressor, more effectively. Furthermore, the heat transfer effect between scroll wrap and working fluid in compression chamber is considered for the performance analysis. As the results of this study, the effects of the radial and tangential leakage flow rate and heat transfer on the scroll compressor performance are derived precisely. These results may provide the guideline for the design and development of a real scroll compressor.

Changes of Physical and Sensory Quality in Home-delivered meals for elderly as affected by Packaging methods and Storage conditions 3 (노인을 위한 가정배달급식의 포장방법 및 저장조건에 따른 물성ㆍ관능적 품질 변화 3)

  • 김혜영;류시현
    • Korean journal of food and cookery science
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    • v.19 no.3
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    • pp.374-389
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    • 2003
  • The Purpose of this study was to propose the most effective packaging method and storage conditions to apply to home-delivered meals for the elderly Changes in the physical and sensory qualities of pan fried oak mushroom and meat, soy sauce glazed hair tail and roasted dodok, in wrap packaging, top sealing and vacuum packaging were evaluated during storage at 25, 4 and -18$^{\circ}C$, for 5 days. The speed of falling-off in the foods qualities, under chilled and frozen storage conditions did not differ much as the 5 day storage period was too short for a proper assessment. The sensory characteristics of taste and texture were better evaluated in the chilled than in the frozen storage. The most effective packaging method at all the storage temperatures was the vacuum packaging, which assured the safety of the foods by the removal of oxygen. The lightness, springiness and hardness were significantly influenced by the storage temperature, period and packaging method, while the sensory characters were affected by storage temperature and the period. In conclusion, the quality of the vacuum packed pan fried oak mushroom and meat and soy sauce glazed hair tail, in frozen storage, were still fresh after the five days of the experiment. The shelf-life of those foods with wrap packaging, in chilled storage, were suggested to be three days. The quality of the roasted dodok, with vacuum packaging in chilled storage, was preserved for five days.