• KSII Transactions on Internet and Information Systems (TIIS)
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• v.14 no.1
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• pp.455-472
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• 2020

As a user in modern societies with the rapid growth of Internet environment and more complicated business flow processes in order to be effective at work and accomplish things on time when the manager of the company went for a business trip, he/she need to delegate his/her signing authorities to someone such that, the delegatee can act as a manager and sign a message on his/her behalf. In order to make the delegation process more secure and authentic, we proposed a secure and efficient identity-based proxy signcryption in cloud data sharing (SE-IDPSC-CS), which provides a secure privilege delegation mechanism for a person to delegate his/her signcryption privilege to his/her proxy agent. Our scheme allows the manager of the company to delegate his/her signcryption privilege to his/her proxy agent and the proxy agent can act as a manager and generate signcrypted messages on his/her behalf using special information called "proxy key". Then, the proxy agent uploads the signcrypted ciphertext to a cloud service provider (CSP) which can only be downloaded, decrypted and verified by an authorized user at any time from any place through the Internet. Finally, the security analysis and experiment result determine that the proposed scheme outperforms previous works in terms of functionalities and computational time.

• Archives of design research
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• v.17 no.2
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• pp.147-156
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• 2004

An enterprise is a basic unit to constitute national economy and a unit of independent production economy to pursue profit based on separation between ownership of production means and labor. Even though price and quantity of production are decided by planned economy in order to survive in the mechanism of market economy, quantity of production and of demands can't be same at all because of consumers' different preferences. An enterprise uses audio-visual media like letters, pictures, and voice in order to grasp consumers' taste, to develop products and to advertise them. Advertising is communication that a company, a non-profit organization or an individual, that is shown in the message of an ad, makes through several media. It is time that a company should appeal its image, not only its products, to consumers as a salesman. Marketing strategy of company identity is to visualize a company's intentions, to formalize its motto, slogan or culture, to build up trust of products and the company in consumers, and then, to have the consumers forever. By the virtue of development of www in 1990s, the media has been expanded to online. Development of www has united the world into a network and the market has been changed to unlimited competition. This paper intends to define the concept and characteristics of web identity and investigates and analyzes how web sites of sports shoes express their identities. In addition, it analyzes influences of multinational companies' web identifies (in Korean version) and of local companies' web identities on local consumers. Through survey, it will analyze the effects of web identity and review its operation.

• CHINESE LITERATURE
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• v.100
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• pp.85 -100
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• 2019

In the 21st century, there was a boom of research in the field of Taiwanese historical narrative on Netherland's colonial rule of Taiwan in the 17th century. Such trend expanded to the literature field, and creations were made using the forgotten historical material. Representative works are 《婆 娑之島》 and 《福爾摩沙三族記》, written by Ping Lu and Chen Yao-chang. By analyzing these texts, this study studies what kind of a message the author presents through the literary form, and what his view is on the present and the future. In 《婆娑之島》, Ping Lu presents the fate of Taiwan being in the midst of imperialism for 400 years, and points out the betrayal of imperialism on Taiwan. Ping Lu argues that in order for Taiwan to evade from such situation, the future of Taiwan should be discussed in the global context, outside of the limited perspective of "China/Taiwan". Chen Yao-chang established the Tiwanese identity based on the multiple history narrative, by referencing to the spacial identity instead of the innate kinship. Such establishment of identity gave a breakthrough to the identity politics in Taiwan. Amidst the rapidly changing world politics and economy, it is essential for Taiwan to reestablish the cultural identity for itself for its development. What is more important is that the multiple history narrative maintains openness of history and communicates with the grand narrative to prevent history from being baised.

• Journal of Korea Multimedia Society
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• v.14 no.6
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• pp.775-784
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• 2011

In this paper we introduce the notion of multi-receiver certificateless encryption that avoids the inherent key escrow problem of multi-receiver identity-based encryption, and also present a highly efficient multi-receiver certificateless encryption scheme which eliminates pairing computation to encrypt a message for multiple receivers, Moreover, the proposed scheme only needs one pairing computation to decrypt the ciphertext. Finally, we discuss how to properly transform our scheme into a new public key broadcast encryption scheme for stateless receivers based on the subset-cover framework, which enjoys the advantages of certificateless cryptography.

• Journal of Arbitration Studies
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• v.9 no.1
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• pp.367-390
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• 1999

The basic requirements for conducting electronic commerce include confidentiality, integrity, authentication and authorization. Cryptographic algorithms, make possible use of powerful authentication and encryption methods. Cryptographic techniques offer essential types of services for electronic commerce : authentication, non-repudiation. The oldest form of key-based cryptography is called secret-key or symmetric encryption. Public-key systems offer some advantages. The public key pair can be rapidly distributed. We don't have to send a copy of your public key to all the respondents. Fast cryptographic algorithms for generating message digests are known as one-way hash function. In order to use public-key cryptography, we need to generate a public key and a private key. We could use e-mail to send public key to all the correspondents. A better, trusted way of distributing public keys is to use a certification authority. A certification authority will accept our public key, along with some proof of identity, and serve as a repository of digital certificates. The digital certificate acts like an electronic driver's license. The Korea government is trying to set up the Public Key Infrastructure for certificate authorities. Both governments and the international business community must involve archiving keys with trusted third parties within a key management infrastructure. The archived keys would be managed, secured by governments under due process of law and strict accountability. It is important that all the nations continue efforts to develop an escrowed key in frastructure based on voluntary use and international standards and agreements.

• Korean Journal of Health Education and Promotion
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• v.23 no.2
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• pp.77-89
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• 2006

Objectives: Recent studies have shown that tailoring to women's individual beliefs and stage of cancer screening adoption increase the probability that cancer screening will ensue. To identify variables associated with cancer screening behavior, many studies for cancer screening have used the Transtheoretical Model(TTM). This study was carried out to identity the cognitive and behavioral factors associated with breast cancer screening by stages of change among women, forties aged. Methods: Building on the TTM constructs, we collected the data to test the association with cognitive and behavioral factors for breast cancer screening by stage of change among women, forties aged (N=232), using the self-reported questionnaire. The stages of change were grouped according to screening participation and intention for breast cancer as precontemplation, contemplation, preparation, action, and maintenance. We found out the association between breast cancer screening and cognitive and behavioral factors, and testified the difference between stages of change by chi-square test, one-way ANOVA, and multiple comparison analysis(Duncan test). Results: Analyses of 232 women showed that participation on mammography was 68.1% within lifetime and 46.1% within last 2 years, and we found out the association with breast cancer screening participation, intention and cognitive-behavioral factors. The stages of change based on participation and intention were different from the decisional balance, the screening attitude, and the self-efficacy(p<0.01). The decisional balance was differ from stages of change because the difference on opinions about pros(positives) and cons(negative) were likely to significant by stages of change(p<0.05, p<0.01). Conclusion: To increase the screening rate for breast cancer, it should be developed the tailored message and recommend guideline. And the tailored message should be designed to increase the pros of breast cancer screening(mammography) and to decrease the cons, and considered the woman's stage of adoption.

• Journal of the Korean Society of Clothing and Textiles
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• v.40 no.2
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• pp.315-329
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• 2016

The $21^{st}$ century is the age when the revolution of digital technology enables two-way communication and when emotional values are emphasized. Thus, it exerts influence on the fashion industry and fashion communication. Along with fashion shows, advertising and displays, many fashion brands have increased the use of fashion films. For that reason, this study examines the characteristics of fashion films made by fashion brands, based on the frame work of persuasion communication. For the research, literature reviews and internet website research were done and films of Chanel, Prada, Kenzo and Alexander Wang were analyzed. The definition and types of fashion films were redefined as terminology varied throughout previous studies prior to analyzing each case. As a result, a fashion film would be redefined as 'a digital image which a fashion brand publishes to consumers for the promotion of brand comprehension'. Also, five fashion film types, 'short film', 'campaign film', 'animation film', 'brand film' and 'show film' were redefined. The analysis provided three communication characteristics: reliability, engagement and intuition. First, reliability is attained when a fashion brand (sender) delivers brand message to consumers (receiver) consistently and unitedly. Second, engagement is attained when the type of fashion film (channel) delivers creative image features such as format, music, video technique to attract consumers' interest. Lastly, intuition is attained when a fashion brand (sender) delivers a message akin to brand identity and deepens consumers' understanding. In addition, this study tried to identify the unique usage tendency of brands that could serve as practice guidelines for other fashion brands.

• Journal of the Korean Society of Clothing and Textiles
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• v.26 no.9
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• pp.1308-1319
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• 2002

The purpose of this is to analyze the aesthetics characteristics of our modern sports fashion, and thereby, discuss them in the light of the overall mentality or the 20th century, and thus, present the conditions or sports fashion design meeting modem people's divers aesthetics values and desired. Modern sports fashion sues can be categorized into futurist sports style, erotic sports style and American sheet sports style. And the 20th century mentality characterized by changes of lifestyle, identity and aspiration has influenced the aesthetic features of such sports fashion sues, which can be summed up as follows; first, the futurist sports style applies the functional items and details of active sportswear to design, while heralding a positive and hopeful message of technology and future by using the material of hi-tech functions and senses. This sports style was affected much by shift from social status, attraction and wealth to demonstration of state-of-the-art science, pursuit of functionality in terms of shapes and materials, convenience through See combinations of sportswear items or design elements. Second, the erotic sports style based on minimalism attempted to express the erotic body beauty indirectly by exposing some parts of body or using the material pressed against the body. This sports style was closely related with the changes of sexual identity such as neutral sexualism, bi-sexualism and homo-sexualism. Lastly, the American street sports style was born from black Americarns' sports and dances. This spors style pursues “youth” beyond TPO concept As mass media and commercial sports developed, the young generation copied sports stars' uniforms or fashions to share honor, wealth and youth with them. In sort, the American sheet sports style was affected much by the so-called “heroism”. Such a changed object of aspiration influenced the aesthetic characteristics of American shot sports style directly.

• Journal of the Korean Society of Clothing and Textiles
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• v.39 no.3
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• pp.353-368
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• 2015

Walter Van Beirendonck expresses a fairy tale world of perverted sexual desire of sadism and masochism, violence, and aggressiveness that breaks from a transient one-time concept as is an essential element of fashion. This study classifies the aesthetic characteristic shown on the design of Walter Van Beirendonck and analyzes the intent of his symbolism and meaning. The attempt has a meaning in exploring a new directionality of fashion by conveying a critical message to this end, contemporary fashion breaks down boundaries with artistic genre and connects a problematic consciousness that exists in life with fashion. The results of study on the aesthetic characteristics of Walter Van Beirendonck are as follows. First, Beirendonck emphasized an interpersonal image about body by giving a question through the deconstruction of image on a perfect body into race, age, and body based on body modification. Second, fetishism appeared as a consciousness that human identity and character can be changed by connecting a fetish element of sexual identity, and sadism and masochism with fashion's imagination. Third, infantilism as an amusement expression of the form metaphorically satirized life of modern people. Fourth, makeup shown on performance or festival of an African tribe was used in the way of mixture or reuse for ethnography to obtain inspiration from ethnography. Fifth, pop art combined a popular culture code as amusement through mass production and mass media. Aesthetics of Beirendonck do not have norm and are bold in using form, color, pattern, print, and styling because Beirendonck reinterpreted critical attitudes about essential problems that human life entails into a motif of his symbolic meaning in amusement. In regards to his design aesthetics, Beirendonck expanded fashion to the scope of Gesamtkunstwerk in a consistent and continued theme combined with philosophical creativity and differentiated from other fashion designers.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.24 no.6
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• pp.1147-1157
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• 2014

Intelligent transportation system (ITS) is realized through a highly ephemeral network, i.e. vehicular ad hoc network (VANET) which is on its way towards the deployment stage, thanks to the advancements in the automobile and communication technologies. However, it has not been successful, at least to date, to install the technology in the mass of vehicles due to security and privacy challenges. Besides, the users of such technology do not want to put their privacy at stake as a result of communication with peer vehicles or with the infrastructure. Therefore serious privacy measures should be taken before bringing this technology to the roads. To date, privacy issues in ephemeral networks in general and in VANET in particular, have been dealt with through various approaches. So far, multiple pseudonymous approach is the most prominent approach. However, recently it has been found out that even multiple pseudonyms cannot protect the privacy of the user and profilation is still possible even if different pseudonym is used with every message. Therefore, another privacy-aware mechanism is essential in vehicular networks. In this paper, we propose a novel identity exchange mechanism to preserve conditional privacy of the users in VANET. Users exchange their pseudonyms with neighbors and then use neighbors' pseudonyms in their own messages. To this end, our proposed scheme conditionally preserves the privacy where the senders of the message can be revoked by the authorities in case of any dispute.