• 제목/요약/키워드: CARDS

검색결과 716건 처리시간 0.02초

Enhanced Password-based Remote User Authentication Scheme Using Smart Cards

  • 전일수;김현성
    • 한국산업정보학회논문지
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    • 제16권1호
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    • pp.9-19
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    • 2011
  • Secure and efficient authentication schemes over insecure networks have been a very important issue with the rapid development of networking technologies. Wang et al. proposed a remote user authentication scheme using smart cards. However, recently, Chen et al. pointed out that their scheme is vulnerable to the impersonation attack and the parallel session attack, and they proposed an enhanced authentication scheme. Chen et al. claimed that their scheme is secure against the various attacks. However, we have found that their scheme cannot resist the parallel attack and the stolen smart card attack. Therefore, in this paper, we show the security flaws in Chen et al.'s scheme and propose an improved remote user authentication scheme using tamper-resistant smart cards to solve the problem of Chen et al.'s scheme. We also analyze our scheme in terms of security and performance.

명함에서 지식베이스를 이용한 구성요소의 추출 (The Component Extraction Using Knowledge-Base from Name-Card)

  • 이성범;남궁재찬
    • 한국통신학회논문지
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    • 제18권8호
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    • pp.1201-1212
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    • 1993
  • 본 논문은 명함에서 지식베이스를 이용하여, 정보항목를 자동적으로 추출하는 실험을 하였다. 본 연구에서 사용한 기본개념은 명함내에 지식으로 항목과 요소들간의 관련정보 및 구조적인 정보를 이용한다. 계층적인 지식을 지식베이스로 기술하기 위해 프레임표현을 사용하고, 명함에서 항목과 그룹후보를 추출하기위한 영역분류 알고리즘을 제안했다. 100개의 대강 명함에 대해서 실험한 결과는 95%이상의 추출율을 얻었다.

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다목적 무선 식별 카드 리더기 개발 (Development of the RFID Card Reader for Multi-purpose Application)

  • 유종상;이상철;유재문
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2003년도 학술대회 논문집 전문대학교육위원
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    • pp.117-119
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    • 2003
  • Recently, Radio Frequency Identification (RFID) cards have been charming increasing attention. In addition, the RFID card ensures high durability and ease of maintenance because it has no built-in contact. And the benefits of RFID cards over contact cards are primarily due to the increased transaction speed and convenience brought to the cardholder. In this paper, we have developed a RFID card reader for the multi-purpose applications. The vicinity card reader with large-screen to display user ID and card number for a kinds of applications such as entrance and attendance management system is suitable for the use with EM card and TEMIC card, featuring easy to mount and reliable quality. The read range of the proposed RFID card reader is 70cm. This paper also addresses current RFID technology in terms of systems and provides a look forward its future applications in the aviation environment using RFID smart card.

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CALCULATION OF FLOW FIFLD IN A CHANNEL SUBJECTED TO PRESSURE-BASED BOUNDARY CONDITION

  • 박종흥;이재헌
    • ETRI Journal
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    • 제10권4호
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    • pp.118-126
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    • 1988
  • A numerical analysis was performed for the flow field in the vertical channels consist of dummy cards and active cards to define the hydrodynamic role of dummy card which is often installed in electronic equipment between active cards to control the cooling air distribution. For a given velocity profile at the inlet and a pressure-based boundary condition at the outlet of the computation domain, the percentage of the flow rate distribution through active channel and dummy channel formed by an active card and dummy card, respectively, were investigated. As a result of present analysis, the pecentage of flow rate through active channel increases quadraticaly with the increase of the ratio of the height of barrier to the width of the dummy channel.

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복수신용카드 소지자들의 신용카드 사용행태와 부채부담에 관한 연구 (A Study on Credit Card Uses and Debt Burden of Multiple Credit Card Holders)

  • 이윤금
    • 대한가정학회지
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    • 제36권11호
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    • pp.219-230
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    • 1998
  • The purpose of this study was to understand credit card uses and debt burden of the multiple credit card holders. Data were obtained from 428 housewives living in Seoul. OLS regression analysis was used for examining factors affecting credit card uses and debt burden for the multiple credit card holders. The findings could be summarized as follows. First, among the three types of credit cards-bank card, retail card, and professional card, the multiple credit card holders tended to have more bank cards than retail and professional cards. Second, holding of the professional card was positively associated with both the frequency and the amount of credit card use per month. Third, the household income, age, employment status, and motive were important factors in predicting their attitudes toward credit card. Forth, the level of education, employment status, holding of the professional card, motive, amount of credit card use, and attitude toward credit card had singificant effects on their perceived debt burden.

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균형성과표를 이용한 노인장기요양 방문간호센터의 핵심성과지표 개발 (Development of the Key Performance Indicators of Long-term Care Visiting Nursing Centers Using Balanced Score Cards)

  • 김선희;임지영
    • 가정∙방문간호학회지
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    • 제28권2호
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    • pp.164-177
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    • 2021
  • Purpose: The purpose of this study was to develop effective management indicators for improving efficiencies of visiting nursing centers. Method: This was a methodological research study to develop the key performance indicators based on balanced score cards for long-term care visiting nursing centers. The main methods used in this study were literature review, focus group interview, and content validity index. The data analysis was used frequency, percentage, mean, and standard deviation. Results: The common vision of the long-term care visiting nursing centers was identified as "The healthy visiting nursing center to serve high quality cares." Eight action strategies and 15 key performance indicators to achieve this vision were developed. Conclusion: Based on the results of this study, we suggest that the developed balanced score cards will be used as an effective managerial guideline to improve performances of long-term care visiting nursing centers.

임상간호사의 분노표현양상: Q 방법론 적용 (Types of Anger Expression in Clinical Nurses: Q Methodology)

  • 김명애;고성희;박은아;박정언;정복희;김선희
    • 임상간호연구
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    • 제16권1호
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    • pp.107-117
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    • 2010
  • Purpose: The purpose of this study was to identify types and characteristics of anger expression in clinical nurses. Methods: Q methodology was used to analyze each individual participant's subjectivity on anger expression. A total of forty clinical nurses arranged 32 pre-selected Q statement cards on a 9 point scale, shaping the cards' pile into a normal distribution. Then the data from the arranged cards were analyzed using the QUANL PC Program. Results: Three types of anger expression were identified; 'reasonably overcoming', 'emotionally expressing', and 'internally mitigating' including both positive and negative aspects. Conclusion: Adequate strategies to resolve anger in clinical nurses needs to be developed according to anger expression types.

의류 소매점의 판매촉진에 대한 소비자 태도와 구매의도 (Consumer Attitudes toward the Sales Promotions of Retail Apparel Stores With Respect to Purchase Intention)

  • 경문수;황춘섭
    • 유통과학연구
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    • 제13권3호
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    • pp.51-60
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    • 2015
  • Purpose - Among potential marketing strategies, the most efficient method to encourage purchase intention is through sales promotions. Sales promotions also serve to enhance customer satisfaction, which is closely related to the incidence of repurchases. Therefore, the success of retail stores greatly depends on the effectiveness of their promotional activities. The present study aimed to obtain the necessary information for apparel stores to establish more effective promotional activities. To this end, the study's specific research questions were to examine 1) consumer satisfaction with the recent sales promotions of retail apparel stores, 2) the levels of consumer preferences for different types of sales promotions (cash discounts, promotional gifts, prize drawings, discount coupons, stamp cards, or mileage cards), and 3) the differences in purchase intention according to preference levels for different types of sales promotions. Research design, data, and methodology - The research employed a descriptive survey method using a self-administered questionnaire. The sample consisted of 700 men (n=234) and women (n=466) ranging in age from their 20s to their 50s and residing in the Seoul area. Data were analyzed through methods including factor analysis as well as Cronbach's α coefficients, the t-test, ANOVA, and the Duncan test. Results - Differences among consumer preferences were identified for each type of sales promotion according to the purchase amount and the customer's age. In relation to purchase amounts below 500,000 won, participants in their 50s have lower preferences for price discounts than those in their 20s or 30s, whereas participants in their 40s or 50s have lower preferences for stamp cards and mileage cards than those in their 20s. When the purchase amount is greater than 500,000 won, housewives have higher preferences for promotional gifts than respondents with other occupations. However, no gender differences were found with regard to preference levels for the different types of sales promotions. Respondents generally exhibited mediocre satisfaction with the sales promotion events of retail apparel stores. They also expressed negative opinions about sales promotions when such promotions lead to high prices, as well as dissatisfaction with the poor quality of promotional gifts. It was also found that, regardless of the purchase amount, the groups with higher preferences for discount coupons and mileage cards displayed higher purchase intentions. Only when the purchase amount is greater than 200,000 won did the group with higher preferences for lottery system promotional gifts express higher purchase intentions. On the other hand, for all purchase amount sizes, there were no differences in purchase intentions according to preferences for cash discounts, promotional gifts, or stamp cards. Conclusions - The results revealed that greater effort must be devoted to enhancing consumers' satisfaction levels with the promotional activities performed by apparel retail stores. The results also showed that it is necessary to differentiate among sales promotion strategies according to preference levels for different types of sales promotions, purchase amounts, and target consumer ages.

모바일 신용카드 사용자 만족 및 지속사용의도에 영향을 미치는 요인에 관한 연구: 혁신확산이론 및 후기수용모형을 중심으로 (Factors Influencing User Satisfaction and Continuous Usage Intention on Mobile Credit Card: Based on Innovation Diffusion Theory and Post Acceptance Model)

  • 정영훈;김건;이중정
    • 한국전자거래학회지
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    • 제20권3호
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    • pp.11-28
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    • 2015
  • 스마트폰의 일상화로 모바일 중심의 라이프 스타일이 확산되면서, 모바일을 기반으로 하는 모바일 뱅킹, 쇼핑 등의 이용이 증가하고 있다. 또한 최근 금융과 IT기술이 결합된 신조어인 Fintech(Financial + Technology)의 등장과 함께, IT기반의 금융시장은 더 확대될 것으로 보인다. 이러한 추세에 따라서, 지급결제 수단으로서의 모바일 신용카드에 대한 기업 및 국가적 차원의 관심 및 투자가 증가하고 있으나, 소비자의 실제적인 확산 및 이용은 낮은 수준에 있다. 이러한 점을 고려하여 본 연구에서는 모바일 신용카드 이용 및 확산을 위한 요인이 무엇인지를 파악하기 위하여 확산이론(Innovation Diffusion Theory)과 후기수용모형(Post Acceptance Model)을 바탕으로 연구모형을 구성하였다. 설문조사를 통해 분석 자료를 수집하고, 연구모형을 분석한 결과, 인지된 용이성, 이미지, 적합성, 촉진의 4가지 요인이 사용자 만족에 유의한 영향을 미치는 것이 확인되었다. 또한, 모바일 신용카드에 대한 사용자 만족은 모바일 신용카드 지속사용의도에 유의한 영향을 미치는 것으로 나타났다. 또한 집단 간 비교연구에서는 플라스틱 신용카드보다 모바일 신용카드 이용금액이 많은 집단에서 촉진이 사용자 만족에 더 큰 영향을 미치는 것으로 나타났으며, 상대적으로 모바일카드 이용금액이 적은 집단에서는 인지된 용이성과 이미지가 사용자 만족에 더 큰 영향을 미치는 것으로 나타났다. 본 연구결과는 모바일 신용카드 활성화를 위한 정부 및 기업의 마케팅에 있어서의 전략적 가이드라인을 제공할 것으로 기대하며, 또한 상대적으로 부족한 모바일 신용카드 연구에 초기 단계 연구로서의 가치를 지닐 것으로 기대한다.

1회용 RF교통카드 발매기 운영체제 개발방법에 관한 연구 (A single use RF Transit Card Study on development of operating systems, vending machines)

  • 유신철;박광환
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2011년도 춘계학술대회 논문집
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    • pp.1148-1154
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    • 2011
  • Vending machines to release single-use RF(Radio Frequency) transport cards at Seoul Metro stations are operated under unmanned facility and have release & charge function. This Paper introduces function, configuration of vending machine to release single-use RF transport cards, the basic concepts & overview about vending machine's operating system. And suggests programming procedure to develop OS image of Windows Embedded operating system which is onboard the main board's electronic circuitry.

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