• Journal of Distribution Science
• /
• v.21 no.10
• /
• pp.1-9
• /
• 2023

Purpose: This study analyses the current development of cross-border e-commerce in China, outlines the challenges faced by Chinese cross-border e-commerce SMEs, and finally summarises the development strategies of Chinese cross-border e-commerce SMEs in the post-covid-19 era, which will provide opinion references for the development of Chinese cross-border e-commerce SMEs. Research design, data and methodology: The methodology used in this study is to analyse the current situation of cross-border e-commerce development in China in the context of covid-19 through literature; and to summarise the challenges encountered by Chinese cross-border e-commerce SMEs through semi-structured interviews. Results: The article summarises the current status of China's cross-border e-commerce development in the context of covid-19 in terms of cross-border e-commerce trade volume, cross-border e-commerce enterprise and user scale, cross-border e-commerce logistics, cross-border e-commerce global co-operation, government policy, and cross-border e-commerce product distribution, outlining challenges encountered by China's cross-border e-commerce SMEs in terms of logistic pricing, operating capital chain, product service support, and trade protection The paper Finally, it is pointed out that Chinese cross-border e-commerce SMEs must adopt new strategies to adapt to the new development in the context of covid-19. Conclusions: Specific development strategies are provided for Chinese cross-border e-commerce enterprises and reference suggestions are provided for the post-covid-19 era.

• Journal of the Korean Society of Manufacturing Process Engineers
• /
• v.12 no.2
• /
• pp.91-99
• /
• 2013

Car cross beam made by aluminium for new car is designed for the substitution of steel and it can be verified the performance by computer simulations. The parts of car cross beam are designed to replace steel parts according to their manufacturing processes. At the first stage, the weight of the aluminium car cross beam can be reduced to 75% by comparing with that of steel car cross beam. But NVH performance of the aluminium car cross beam becomes slightly insufficient as compared with that of steel car cross beam. Taguchi method is adopted to optimize the design variables affecting NVH characteristics of car cross beam. New car cross beam is designed at the second stage by using these analysis results. Weight reduction can be obtained to 31.7% by design modification and material change of car cross beam in comparison with the original steel one. NVH characteristics of aluminium car cross beam become on an equal level with the steel car cross beam. By side impact analysis results, new car cross beam has higher performance as compared with the steel car cross beam.

• Journal of the Korean Society of Costume
• /
• v.35
• /
• pp.111-134
• /
• 1997

The purpose of this paper is to examine into the cross-dressing. Cross-dressing means 'dress-ing in clothes of the opposite sex' which has increased under the contemporary conditions. There also have been various cross-dressing phenomena in past but it appears strongly now that it would destroy the cultural stereo-types and give rise to the cultural insecurities in the contemporary conditions,. In this paper the author classified cross-dressing with the oppositional cross-dressing the perverted cross-dressing and the custom-ary cross-dressing. And the results are as follows 1. The oppositional cross-dressing has increased under the influence of feminism movements homosexual identities and subcul-tural identities. 2. The perverted cross-dressing has ap-peared in various social cultural contexts that is in the regional theratrical and the religious habits. Cross-dressers have used the clothes as an instrument for which the solve the contradic-tion between sex and gender role. And through the cross-dressing phenomena we can find all the category crises which are related with sex and gender but simultaneously we can search for all the possibilities through the open thought.

• Archives of Pharmacal Research
• /
• v.29 no.12
• /
• pp.1179-1186
• /
• 2006

Cross-linked starch microspheres were prepared using different kinds of cross-linking agents. The influence of several parameters on morphology, size, swelling ratio and drug release rate from these microspheres were evaluated. These parameters included cross-linker type, concentration and the duration of cross-linking reaction. Microspheres cross-linked with glutaraldehyde had smooth surface compared with those prepared with epichlorhydrine or formaldehyde. The particle size increased with increasing the cross-linking time and increasing the drug loading. Swelling ratio of the particles was a function of cross-linker type but not the concentration or time of cross-linking. Drug release from starch microspheres was measured in phosphate buffer and also in phosphate buffer containing a-amylase. Results showed that microspheres cross-linked with epichlorhydrine released all their drug content in the first 30 minutes. However, cross-linking of the starch microspheres with glutaraldehyde or formaldehyde decreased drug release rate. SEM and drug release studies showed that cross-linked starch microspheres were susceptible to the enzymatic degradation under the influence of alpha-amylase. Changing the enzyme concentration from 5000 to 10,000 IU/L, increased drug release rate but higher concentration of enzyme (20,000 IU/L) caused no more acceleration.

• Transactions of the Korean Society of Automotive Engineers
• /
• v.19 no.2
• /
• pp.117-124
• /
• 2011

Valve springs with non-circular cross-section are widely used in automotive engines. Because of the reduced height, the oval cross-section provides some merits in its install height and stress distribution. This paper introduces a new method to generate optimal shape of the non-circular cross-section. For given width and height, arbitrary shape of the cross-section are described using the Hermite spline curves. Cross-section area and maximum stress level are chosen as performance indices, and nonlinear optimization problems are formulated with inequality constraints. Compared to a production spring wire, cross-section area can be reduced about 2.4 [%] without increasing maximum stress level. In addition, the other approach gives an optimum cross-section which reduces maximum stress level of 2.0 [%] without increasing cross-section area.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.19 no.4
• /
• pp.623-632
• /
• 2018

Predicting the behavior of rheological polymers is highly shear rate- and temperature-dependent. The Cross-WLF viscosity model has become a powerful solution that describes the shear rate- and temperature-dependent characteristics. To estimate the behavior of polymers in computational simulations, the coefficients of the Cross-WLF model should be well identified. An identification technique was proposed to determine the Cross-WLF viscosity model coefficient. The assumption is that the Cross-WLF viscosity model well describes the real characteristics of polymers when the calculated viscosity with the parameters is identical to the reference data. In this study, Auto-desk Moldflow data were used as a reference. The numerical examples showed that the proposed method accurately identifies the Cross-WLF viscosity model coefficients.

• Korean Journal of Human Ecology
• /
• v.17 no.2
• /
• pp.335-344
• /
• 2008

The purpose of this study was to examine male students' awareness and receptivity of cross-sexual fashion. The subjects in this study were 480 male university students and 320 high school boys. After a survey was conducted in August 2007, the following findings were given: 1. How much the students were interested in fashion was investigated, and they thought of fashion often, Even though nothing any fashion shopping plan they were interested display of fashion market and logged onto online fashion shopping malls frequently. 2. As for awareness of cross-sexual, they got a mean of 2.79(1.10), which indicated their awareness level was below the average. Those who were more intrigued by fashion, who were university students and who had a girl friend were better cognizant of cross-sexual. 3. To what extent they were receptive to cross-sexual fashion was checked in terms of clothes, haircare, skin care, accessories and perfume/cosmetic surgery and they were most receptive to cross-sexual haircare(3.49). Those who cared more about fashion were more receptive to cross-sexual. The Value of clothes and perfume/cosmetic surgery for university students was higher than the high school students. 4. They were most receptive to other's cross-sexual haircare(3.51) and to other's cross-sexual clothes(2.77) the least. Those who were more intrigued by fashion were more receptive to others seeking after cross-sexual. The Value of clothes sand perfume/cosmetic surgery for university students was higher than the high school students. 5. There was a strong correlational relationship among their interest in fashion, awareness of cross-sexual, receptivity to their own being a cross-sexual man and receptivity to others who are cross-sexual. The findings of the study illustrated that those who were more intrigued by fashion and who were better aware of cross-sexual were more receptive to cross-sexual fashion.

• Proceedings of the Korean Society for Technology of Plasticity Conference
• /
• 2008.10a
• /
• pp.95-98
• /
• 2008

In the present work, cross-roil rolling was rallied out using a rolling mill in which the roll axes are tilted by $5^{\circ},\;7.5^{\circ},\;10^{\circ}$ towards the transverse direction of the roiled sample. The evolution of strain states during cross-roll rolling was investigated by three-dimensional finite element method (FEM) simulation. Parallel to cross-roll rolling, normal-rolling using a conventional rolling mill was also carried out in the same rolling condition for clarifying the effect of cross-roll rolling. It turned out that three shear rate components were all introduced to the rolled sample by the cross-roll rolling process, while only one shear rate component operated during normal-rolling.

• Proceedings of the Korean Geotechical Society Conference
• /
• 2006.03a
• /
• pp.286-300
• /
• 2006

Nonlinear cross-anisotropic properties of soil is critical for exact numerical simulation. Theoretically, initial cross-anisotropic properties can be evaluated from triaxial tests with bender element tests, and nonlinear cross-anisotropic properties over initial strain level cannot be evaluated from triaxial tests. In this study, a supposed condition among nonlinear cross-anisotropic properties is suggested to calculate nonlinear cross-anisotropic properties from triaxial tests. Maximum strain and incremental strain energy are applied to combine triaxial test results and theoretical normalized shear modulus curve, respectively Based on combined results, nonlinear cross-anisotropic properties are calculated. Numerical simulation for triaxial tests Is carried out to verify the applicability of the supposed condition with calculated cross-anisotropic properties and simplified nonlinear cross-anisotropic model.

• Journal of Power Electronics
• /
• v.16 no.5
• /
• pp.1802-1812
• /
• 2016

Cross regulation is a key technical issue of single-inductor multiple-output (SIMO) DC-DC converters. This paper investigates the cross regulation in single-inductor dual-output (SIDO) Buck converters with continuous conduction mode (CCM) operation. The expressions of the DC voltage gain, control to the output transfer function, cross regulation transfer function, cross coupled transfer function and impedance transfer function of the converter are presented by the time averaging equivalent circuit approach. A small signal model of a SIDO CCM Buck converter is built to analyze this cross regulation. The laws of cross regulation with respect to various load conditions are investigated. Simulation and experiment results verify the theoretical analysis. This study will be helpful for converter design to reduce the cross regulation. In addition, a control strategy to reduce cross regulation is performed.