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The Determination of electron collision cross sections by electron swarm method (전자군 방법에 의한 충돌단면적 결정)

  • 전병훈;박재준;하성철
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2002.07a
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    • pp.236-239
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    • 2002
  • The electron-atom collision studies has been essentially use\ulcorner for testing and developing suitable theories of the scattering and collision processes, and for providing a tool for obtaining detailed information on the structure of the target atoms and molecules and final collision products. And, the development of that has also been strongly motivated by the need for electron collision data in such fields as laser physic and development, astrophysics, plasma devices, upper atmospheric processes and radiation physics. Therefore, we explains the concept and the principle of determination of the electron collision cross sections for atoms and molecules by using the present electron swarm method.

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The Effect of Personalization on Cross-Buying and Shopping Cart Abandonment Based on the S-O-R Framework

  • Kon Woo Kwon;Gee-Woo Bock;Kyu Min Hwang
    • Asia pacific journal of information systems
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    • v.30 no.2
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    • pp.252-283
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    • 2020
  • Online retail is a growing opportunity for retailers and consumers. Cross-buying provides companies with an opportunity to increase their revenue contributions from existing consumers. In many fields, especially in the service sector, cross-selling is an easier strategy to use relative to increasing revenue rather than acquiring new consumers. Website personalization has been a powerful indispensable tool for web-based companies and end users. Using the Mehrabian and Russell's Stimulus-Organism-Response framework, we experimentally examined how an online retailing merchant's environmental stimuli (S) arouses internal affective and cognitive states (O), that affect consumers' approach-avoidance behavior (R) in cross-buying and shopping cart abandonment in online transactions.

Physical Properties and Virtual Cloth Images of Cotton Fabrics Treated with Chitosan, 1,2,3,4-Butanetetracarboxylic Acid and Citric Acid (키토산과 1,2,3,4-Butanetetracarboxylic Acid, Citric Acid로 가공된 면직물의 역학적 특성과 가상 봉제 이미지)

  • Kim, Kyung-Sun;Jeon, Dong-Won;Kim, Jong-Jun
    • Journal of Fashion Business
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    • v.13 no.1
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    • pp.102-114
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    • 2009
  • Chitosan is a polysaccharide with cationic amino groups in its structure and has useful properties as functional materials. Various end-use developments of chitosan are in progress. When the cotton fabric is pretreated with chitosan, the hand property of cotton fabric may be improved expecially for the summer apparel. In this study, as a cross-linking agent to introduce chitosan into cotton, BTCA(butane-1,2,3,4-tetracarboxylic acid) or CA(citric acid) was added in order to prevent detachment of chitosan by the cross-linking. During the cross-linking procedure, via the padding-drying-heat setting, amino groups of chitosan and hydroxyl groups of cotton, carboxyl groups of BTCA/CA are cross-linked by forming anhydrous cyclic rings. Since BTCA has four carboxyl groups, cross-linking by thermal treatment is easy, leading to the trials in wrinkle-recovery treatment of cotton fabrics. However, the high price of the BTCA reagent has been a shortcoming in the actual application for industrial use. Therefore, in this study, we tried the application of CA having three carboxyl groups, which is relatively low priced, as the substituting cross-linking agent. The hand of the treated fabrics were evaluated by measuring physical properties. In addition, based on the physical properties, three-dimensional images were introduced by using 3D CAD systems and results were compared.

A Study of Chinese Linguistic Taboo (중국 금기어 소고)

  • Han, Yong Su
    • Cross-Cultural Studies
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    • v.34
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    • pp.307-330
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    • 2014
  • To avoid calamities, the Chinese use different euphemisms in various fields of occupation and region. There are a lot of linguistic taboos concerned with Xieyin that shows the special characteristic of chinese characters. If two characters are homophones and one of them is considered offensive or misfortune, the Chinese prefer to substitute another expression for them in the actual conversations. These substitutes are called euphemisms. As an combined expression of psychological insecurity and language, euphemisms were not only used in the past, but also now they are still in common use. Although some of the chinese euphemisms are not used anymore nowadays, some of them are still used. There are a large number of chinese euphemisms in common use, but some special ones are used in particular fields only. This article focused on the linguistic taboos in some special fields like different regions, occupations and some others related with calamities, and tried to make a distinction from other previous studies. Language reflects culture and euphemism is a mirror of culture. The study of chinese linguistic taboos and euphemisms is expected to be some help to understand the chinese customs and linguistic features.

Direct Quotations in Headline and Readers' Perception of Factivity (따옴표 기사제목과 인용에 대한 인식차이)

  • Yoon, Jae-Hak
    • Cross-Cultural Studies
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    • v.22
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    • pp.377-401
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    • 2011
  • Major news organizations in Korea are often accused of intentionally conspiring to advance conservative agendas under the disguise of unbiased reporting. Critics suspect that headlines are frequently abused for a certain framing effect. The widespread use of direct quotation is cited as one area of the abuse in headlines. The present study is an attempt to determine whether the criticism is based on facts. We conducted two separate surveys. First, the headlines on three major Korean newspapers were compared with those on The New York Times, Washington Post, and The Times. Then, we collected from Korean and English speakers factivity judgements for the sentences containing a direct quotation. The results confirm previous studies that Korean newspapers engage in a heavy use of direct quotation in headlines. Moreover, the results partially confirm the popular perception that the common use of direct quotation is a recent phenomenon in Korea. Finally, the study finds that both groups of speakers consider direct quotations more truthful than factive sentences.

A Comparative Study of the Trisyllabic Words with same form-morpheme and same meaning in Modern Chinese and the Trisyllabic Korean Words Written in Chinese Characters with same form-morpheme and same meaning (현대 중국어의 삼음사(三音詞)와 현용 한국 삼음절(三音節) 한자어(漢字語)의 동형(同形) 동소어(同素語) 비교 연구)

  • CHOE, GEUM DAN
    • Cross-Cultural Studies
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    • v.25
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    • pp.743-773
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    • 2011
  • In this research, the writer has done a comparative analysis of 4,791 trisyllabic modern Chinese vocabularies from "a dictionary for trisyllabic modern Chinese word" and the corresponding Korean words written in Chinese characters out of 170,000 vocabularies hereupon that are collected in "new age new Korean dictionar y". Aa a result, we have the total 407 pairs of corresponding group with the following 3 types: 1) Chinese : Korean 3(2) : 3 syllable Chinese characters with completely same form-morpheme and same meaning, use, class (376pairs, 92.38% of 407), 2) Chinese : Korean 3 : 3 syllable Chinese characters with completely same form-morpheme and partly same meaning, use, class (18pairs, 4.42% of 407), 3)Chinese : Korean 3 : 3 syllable Chinese characters with completely same form-morpheme and different meaning, use, class (13pairs, 3.19% of 407).

Perceptions of Residents in Relation to Smartphone Applications to Promote Understanding of Radiation Exposure after the Fukushima Accident: A Cross-Sectional Study within and outside Fukushima Prefecture

  • Kuroda, Yujiro;Goto, Jun;Yoshida, Hiroko;Takahashi, Takeshi
    • Journal of Radiation Protection and Research
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    • v.47 no.2
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    • pp.67-76
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    • 2022
  • Background: We conducted a cross-sectional study of residents within and outside Fukushima Prefecture to clarify their perceptions of the need for smartphone applications (apps) for explaining exposure doses. The results will lead to more effective methods for identifying target groups for future app development by researchers and municipalities, which will promote residents' understanding of radiological situations. Materials and Methods: In November 2019, 400 people in Fukushima Prefecture and 400 people outside were surveyed via a web-based questionnaire. In addition to basic characteristics, survey items included concerns about radiation levels and intention to use a smartphone app to keep track of exposure. The analysis was conducted by stratifying responses in each region and then cross-tabulating responses to concerns about radiation levels and intention to use an app by demographic variables. The intention to use an app was analyzed by binomial logistic regression analysis. Text-mining analyses were conducted in KH Coder software. Results and Discussion: Outside Fukushima Prefecture, concerns about the medical exposure of women to radiation exceeded 30%. Within the prefecture, the medical exposure of women, purchasing food products, and consumption of own-grown food were the main concerns. Within the prefecture, having children under the age of 18, the experience of measurement, and having experience of evacuation were significantly related to the intention to use an app. Conclusion: Regional and individual differences were evident. Since respondents differ, it is necessary to develop and promote app use in accordance with their needs and with phases of reconstruction. We expect that a suitable app will not only collect data but also connect local service providers and residents, while protecting personal information.

Exploring the Relation of Smartphone Addiction and Musculoskeletal Pain in the Neck, Trunk, and Upper Limbs: A Cross-sectional Study

  • Yixin Wang;Ye-Jin Kim;Kyeong-Ah Moon;Joo-Hee Park;Hye-Seon Jeon
    • Physical Therapy Korea
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    • v.30 no.3
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    • pp.211-220
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    • 2023
  • Background: Smartphone addiction has emerged as a significant social problem. Numerous studies have indicated the association between smartphone use and discomfort in the musculoskeletal system of the upper extremities. Objects: This cross-sectional survey aimed to compare the characteristics of musculoskeletal pain in the neck, trunk, and upper limbs between individuals with smartphone addiction and those without addiction. Methods: We collected a total of 326 healthy individuals' data from China and Korea who had owned and used smartphones for more than 5 years between 20-50s through an online questionnaire consisting of 84 questions in four major sections. The first part contained basic information on the participant's personal characteristics and smartphones. The second part contained questions about smartphone use and posture. The third part was the smartphone addiction. The fourth part was to investigate musculoskeletal pain in various upper body parts. Results: Smartphone addiction has a weak negative correlation with age (r = -0.20, p < 0.01) and a weak positive correlation with the hours of smartphone use (r = 0.376, p < 0.01). Frequent musculoskeletal pain symptoms related to smartphone use were observed in the neck, shoulder, lower back, and wrists. The hours of smartphone use was slightly positively associated with the prevalence of musculoskeletal pain in the shoulder (r = 0.162, p < 0.05) and lower back (r = 0.125, p < 0.05). The prevalence of musculoskeletal pain in the neck (χ2 = 3.993, p < 0.05), shoulder (χ2 = 6.465, p < 0.05), and wrist (χ2 = 4.645, p < 0.05) was significantly higher among females than males. Conclusion: The results suggest that smartphone addiction should be recognized as a dual concern encompassing both physical health and psychosocial aspects. Furthermore, healthcare professionals, including physicians and physical therapists, should consider clients' smartphone usage patterns when assessing and treating with musculoskeletal pain.

The New Ecosystem of Cross-border E-Commerce among Korea, China and Japan Based on Blockchain

  • Shen, Xiang-Dong;Chen, Xi;Ji, Ran;Wu, Ren-Hong
    • Journal of Korea Trade
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    • v.24 no.5
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    • pp.87-105
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    • 2020
  • Purpose - The purpose of the study is to propose a theoretical framework of cross-border e-commerce ecosystems based on blockchain technology. The ecosystem includes five systems, namely, crossborder supply chain intelligent system, cross-border logistics system, cross-border payment system, cross-border product quality traceability system and cross-border customs supervision system. Design/methodology - This study firstly derived the main improvement factors for the new ecosystem based on blockchain through prior research and expert interviews on cross-border e-commerce. Then explored the use of virtue of decentralization, anti-counterfeiting traceability, consensus mechanism, smart contract and other means of the core technology of blockchain to overcome the bottleneck of cross-border e-commerce development among Korea, China, and Japan. Finally, proposed valuable implications in both theoretical and practical perspectives. Findings - As a result, we combined with the problems existing in cross-border e-commerce among Korea, China and Japan, this paper proposes a solution based on blockchain. On this basis, it constructs a cross-border e-commerce ecosystem among these three countries, including five systems. In addition, we discuss the main problems existing in the current blockchain, such as low transaction concurrency, security loopholes, and inconsistent standards, the corresponding countermeasures are proposed from the technical level, security level and industry standards. Originality/value - This study is the first to apply the blockchain technology to solve the cross-border e-commerce problems in Korea, China and Japan, which is of pioneering significance in both literature and practice. Block chain technology is in the ascendency. This study provides technical solutions for promoting the development of cross-border e-commerce import and export trade between Korea, China and Japan.

Micro-seismic monitoring in mines based on cross wavelet transform

  • Huang, Linqi;Hao, Hong;Li, Xibing;Li, Jun
    • Earthquakes and Structures
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    • v.11 no.6
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    • pp.1143-1164
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    • 2016
  • Time Delay of Arrival (TDOA) estimation methods based on correlation function analysis play an important role in the micro-seismic event monitoring. It makes full use of the similarity in the recorded signals that are from the same source. However, those methods are subjected to the noise effect, particularly when the global similarity of the signals is low. This paper proposes a new approach for micro-seismic monitoring based on cross wavelet transform. The cross wavelet transform is utilized to analyse the measured signals under micro-seismic events, and the cross wavelet power spectrum is used to measure the similarity of two signals in a multi-scale dimension and subsequently identify TDOA. The offset time instant associated with the maximum cross wavelet transform spectrum power is identified as TDOA, and then the location of micro-seismic event can be identified. Individual and statistical identification tests are performed with measurement data from an in-field mine. Experimental studies demonstrate that the proposed approach significantly improves the robustness and accuracy of micro-seismic source locating in mines compared to several existing methods, such as the cross-correlation, multi-correlation, STA/LTA and Kurtosis methods.