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      • 서비스관리의 새로운 시점 : 정부와 사영 비영리서비스조직의 구분, 경영과 전략적 사고 Government and Private NPO's Enclosure, Management and Strategic Explore

        張金成,謝泗薪 啓明大學校 産業經營硏究所 2002 經營經濟 Vol.35 No.1

        세계경제와 사회생활중 비영리조직의 중요성은 점점 부각되고 있으며, 전통적으로 제3부분으로 구분되어진다. 정부가 제1부문, 사영기업이 제2부문, 비영리조직이 제3부문으로 구분되어지며, 두 가지 조직으로 진화되기 시작한다. 그 첫 번째 종류는 열리조직 즉 기업이며, 두 번째 종류는 비영리조직이라 통칭하며, 정부 비영리집단과 사영기업 비영리집단이 포함된다. 지식경제와 서비스경제 시대가 도래한 현실에서, 두 종류의 비영리 서비스조직의 구분과 그 경영 및 경영자가 처한 상황은 비교적 심오한 理論 의의와 현실 의의를 구비한 도전에 직면해 있다. 본 연구는 서비스 경영의 각도에서 중국의 각종 사회기구(비영리조직)를 발전시키고 관리하기 위한 전략적 계시를 제공하고, 국내기업(영리집단)이 단기이익관을 초월하여 장기적 영리능력의 구축할 수 있도록 하고, 비영리와 서비스의 관접에서 중국의 정부기구의 정책행위에 전략적 신사고와 의사결정 상의 참고자료를 제공하고자 한다.

      • KCI등재후보

        Effects of mineral-rich salt intake on the serum and blood pressure of Dahl salt-sensitive rats

        So-Young Kim, Yong-Xie Jin, Haeng-Ryan Kim, Jin-Hyo Kim, Kun-Young Park 충북대학교 동물의학연구소 2013 Journal of Biomedical and Translational Research Vol.14 No.4

        This study was conducted in order to determine the functionality of mineral-rich salt with lower NaCl and higher mineral contents on blood pressure and lipid metabolism in Dahl salt-sensitive rats. A 1% salt solution was administered to five-week-old male Dahl rats– one normal and three salt groups (Purified salt, sun-dried salt, and bamboo salt) for 15 weeks. On the basis of the salt production process, the sun-dried group was classified into two subgroups: SS1 (2-year) and SS2 (>5-year) depending on the storage period of the mineral-rich salt. The relationships between salt intake and changes in blood pressure, serum lipids, and serum mineral concentrations were then examined. The results showed that intake of SS2, which is stored for five years, and BS (bamboo salt) resulted in continuous delay of the increase in blood pressure and inhibited angiotensin–converting enzyme (ACE) activity. In addition, a significant decrease in the triglyceride level in serum lipids of approximately 30% was observed in the SS2 group compared to the PS (purified salt) group. However, all salt intake groups showed an increase in total cholesterol levels compared to the normal group. The results demonstrate that intake of mineral-rich salt is beneficial for the human body and results in reduced blood pressure and triglyceride levels in serum lipids, however, conduct of more research will be needed in order to explore other functions.

      • KCI등재

        Study on 3D Characterized Profile and Point Accuracies of Ground Micro-Pyramid-Structured Si Surface

        Jin Xie,Yong-Xian Lu,Xu-Ran Liu,Yan-Jun Lu 한국정밀공학회 2013 International Journal of Precision Engineering and Vol. No.

        It is very difficult to evaluate 3D profile accuracy of micro-machined surface due to the 3D characterization of its measured point cloud. Hence, three ideal point cloud models, which are grid point model, slash profile model and horizontal profile model, were constructed to register 3D measured point cloud of micro-machined surface and evaluate the accuracies of characterized profile and points. First, #400 and #600 diamond wheel V-tips were employed to fabricate non-integrated and integrated micro-pyramidstructured surfaces with 173 μm in depth and 0.865 in aspect ratio in Computer Numerical Control (CNC) grinding system,respectively; then a white light interferometer was utilized to measure the micro-ground surfaces; finally, registration accuracy and registration efficiency were investigated with regard to characterized profile and point accuracies. The results show that registration accuracy increases and registration efficiency decreases with increasing model point number, but they have little relation with the posture of measured point cloud. Registration error may converge to micro-ground form error when model point number is larger than measured point number. Moreover, the slash profile and horizontal profile models may register characterized profile and point more precisely than grid point model. The slash profile model can produce the best registration accuracy and efficiency. It is confirmed that the micro-ground form errors are 23.8 μm and 7.9 μm, the characterized profile errors are 37.2 μm and 19.0 μm and the characterized peak errors are 51.2 μm and 34.1 μm for non-integrated surface and integrated surface, respectively. As a result,a #600 diamond grinding wheel may be used to perform a precision micro-grinding in CNC grinding system.

      • Allelic polymorphism of <i>GIGANTEA</i> is responsible for naturally occurring variation in circadian period in <i>Brassica rapa</i>

        Xie, Qiguang,Lou, Ping,Hermand, Victor,Aman, Rashid,Park, Hee Jin,Yun, Dae-Jin,Kim, Woe Yeon,Salmela, Matti Juhani,Ewers, Brent E.,Weinig, Cynthia,Khan, Sarah L.,Schaible, D. Loring P.,McClung, C. Rob National Academy of Sciences 2015 PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF Vol.112 No.12

        <P><B>Significance</B></P><P>The plant circadian clock affects many aspects of growth and development and influences both fitness in natural settings and performance in cultivated conditions. We show that <I>GIGANTEA</I> (<I>GI</I>) underlies a major quantitative trait locus for circadian period in <I>Brassica rapa</I> by fine-mapping, analysis of heterogeneous inbred lines, and transgenic rescue of an <I>Arabidopsis gi-201</I> loss-of-function mutant. Analysis of chimeric and mutated <I>B. rapa GI</I> alleles identified the causal nucleotide polymorphism responsible for the allelic variation in circadian period, cold and salt tolerance, and red light inhibition of hypocotyl elongation. Allelic variation of <I>GI</I> and of clock genes in general offers targets for marker-assisted (molecular) breeding for enhanced stress tolerance and potentially for improved crop yield.</P><P><I>GIGANTEA</I> (<I>GI</I>) was originally identified by a late-flowering mutant in <I>Arabidopsis</I>, but subsequently has been shown to act in circadian period determination, light inhibition of hypocotyl elongation, and responses to multiple abiotic stresses, including tolerance to high salt and cold (freezing) temperature. Genetic mapping and analysis of families of heterogeneous inbred lines showed that natural variation in <I>GI</I> is responsible for a major quantitative trait locus in circadian period in <I>Brassica rapa.</I> We confirmed this conclusion by transgenic rescue of an <I>Arabidopsis gi-201</I> loss of function mutant. The two <I>B. rapa GI</I> alleles each fully rescued the delayed flowering of <I>Arabidopsis gi-201</I> but showed differential rescue of perturbations in red light inhibition of hypocotyl elongation and altered cold and salt tolerance. The <I>B. rapa</I> R500 <I>GI</I> allele, which failed to rescue the hypocotyl and abiotic stress phenotypes, disrupted circadian period determination in <I>Arabidopsis</I>. Analysis of chimeric <I>B. rapa GI</I> alleles identified the causal nucleotide polymorphism, which results in an amino acid substitution (S264A) between the two GI proteins. This polymorphism underlies variation in circadian period, cold and salt tolerance, and red light inhibition of hypocotyl elongation. Loss-of-function mutations of <I>B. rapa GI</I> confer delayed flowering, perturbed circadian rhythms in leaf movement, and increased freezing and increased salt tolerance, consistent with effects of similar mutations in <I>Arabidopsis</I>. Collectively, these data suggest that allelic variation of <I>GI</I>—and possibly of clock genes in general—offers an attractive target for molecular breeding for enhanced stress tolerance and potentially for improved crop yield.</P>

      • KCI등재

        Micro-grinding of Micro-groove Array on Tool Rake Surface for Dry Cutting of Titanium Alloy

        Jin Xie,Min-Jian Luo,Jian-Lin He,Xu-Ran Liu,Ting-Wu Tan 한국정밀공학회 2012 International Journal of Precision Engineering and Vol. No.

        A micro-grinding approach is proposed to fabricate micro-groove array on tool rake surface. These micro-grooves were used to rapidly dissipate cutting chips and heat from cutting zone for eco-cutting of titanium alloy without any coolant. This tool is called micro-grooved tool. The objective is to replace chemical and high-energy-beam etching approaches because they have not yet been able to control micron-scale groove shape accuracy. In this study, a superhard diamond wheel V-tip was employed to perform a micro-grinding through a traverse grinding. After micro-grinding, these micro-grooves were characterized by the mean depth of 155.1 μm, the mean form error PV of 7.8 μm and the mean tip radius of 45.6 μm. Firstly, traditional plate tool, orthogonal micro-grooved tool and diagonal micro-grooved tool were employed to perform a dry turning of titanium alloy, respectively; then, tool wear, surface roughness, chip topography and shear angle were investigated. It is shown that the sharpened diamond wheel V-tip is valid to grinding micro-groove array on tool rake surface without any burrs. Furthermore, the micro-grooved tools may reduce the cutting sparks, tool wear, 3D chip size and chip saw-tooth size compared to traditional plate tool. The diagonal micro-grooved tool may decrease tool wear by 6.7% and surface roughness by 37.3% and increase shear angle by 24.3% against orthogonal micro-grooved tool, respectively. This is because the diagonal micro-grooving direction is identical to the cutting chip flowing on tool rake surface. It is confirmed that the diagonal micro-grooved tool is applicable to a stable dry cutting of titanium alloy.

      • KCI등재

        A method of measuring acoustic absorption coefficient of a material specimen using a dynamic microphone

        Jin Xie,Shih-Fu Ling 대한기계학회 2012 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.26 No.3

        This paper reports the development of a method for measuring the absorption coefficient of a material specimen mounted at one end of a planar wave tube using a dynamic microphone at the other end. In the proposed method, the dynamic microphone mounted is used as an actuator (loudspeaker) to generate sound waves and simultaneously performs as a probe to sense acoustic impedance at the same point. For the electro-mechanical acoustical system formed by the dynamic microphone and the tube, a “transduction matrix” is introduced to relate the input electrical variables (voltage and current) and the output acoustical variables (pressure and particle velocity). Once the matrix is calibrated, probing the input voltage and current to the dynamic microphone alone allows quantitative evaluation of the acoustic impedance of material specimen, from which absorption coefficient of the material is calculated. Measurements of fully-reflected end,anechoic end and a porous material specimen are carried out and compared to the results obtained by the conventional transfer function method. It is found that the results match well with each other in a frequency range depending on the length of the tube

      • KCI등재

        Electrical impedance as signal to monitor healthy state of eardrum-like membranes

        Jin Xie,Shih-Fu Ling 대한기계학회 2013 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.27 No.8

        Eardrum perforation is viewed as one kind of structural damage occurring in human being, which will cause loss of hearing when the damage becomes serious. This paper describes a preliminary concept to detect damage of eardrum-like membranes through measuring electrical impedance of a dynamic microphone. The dynamic microphone is inserted in one end of an ear canal-like tube and the eardrum-like membrane is attached at the other end of tube. Holes with different size are drilled in the membranes to represent the different damage levels. The electrical impedance of dynamic microphone is directly related to the mechanical impedance of the membrane, and any change in the electrical impedance signal can be considered an indication of change in the membrane integrity. For the different damage levels of membrane, variation of electrical impedance from the dynamic microphone is observed in experiment. Features are extracted from the curves of electrical impedance and used to train an artificial neural network. Through the trained neural network, damage in membrane can be monitored even in its incipient stage, and the damage levels can be easily estimated, which indicates electrical impedance is a good signal for non-destructive evaluation of structural health.

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