• Journal of Communications and Networks
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• v.8 no.3
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• pp.267-274
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• 2006

Self-spreading (SSP) is a spread spectrum technique where the spreading sequence is generated from data bits. Although SSP allows communications with low probability of interception by unintended receivers, despreading by the intended receiver is prone to error propagation. In this paper, we propose both a new transmitter and a new receiver based on SSP with the aim to a) reduce error propagation and b) increase the concealment of the transmission. We first describe a new technique for the generation of SSP spreading sequence, which generalizes SSPs of existing literature. We include also coding at the transmitter, in order to further reduce the effects of error propagation at the receiver. For the receiver, we propose a turbo architecture based on the exchange of information between a soft despreader and a soft-input soft-output decoder. We design the despreader in order to fully exploit the information provided by the decoder. Lastly, we propose a chip decoder that extracts the information on data bits contained in the spreading sequence from the received signal. The performance of the proposed scheme is evaluated and compared with existing spread-spectrum systems.

• Journal of the Korean Society of Clothing and Textiles
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• v.46 no.1
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• pp.63-79
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• 2022

This study investigated the phenomenon of modern people enjoying tattoo culture in Korea from the perspective of post subculture. A qualitative study was conducted using both literature review and in-depth interview methods. For post-subculture perspectives, the theories of Maffesoli (2017) and Thornton (1996), which are suitable for interpreting contemporary tattoo culture, were reviewed in terms of seven concepts: sporadic network, grouping, fluid participation, temporary emotional bond, self-distinction, pursuit of underground culture, and display and concealment. Semi-structured questionnaires were constructed and administered based on the organized characteristics. Five cultural qualities of the tattoo phenomenon in Korea were derived based on post-subculture concepts. Sporadic formation is related to the pattern of inflow into tattoo culture, and "streaming" participation is based on fluid participation and temporary ties. Distinction within subculture is based on self-distinction and pursuit of underground. The costume-playing ordinary concept includes the characteristic of controlling the exposure of tattoos in society. Finally, formation of the consumer tattoo market was newly discovered in Korean tattoo culture.

• The Korean Society of Law and Medicine
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• v.15 no.1
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• pp.211-237
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• 2014

Because of unpredictability and high possibility of abnormal results by clinical trials compared to general medical behaviors, a procedure for ensuring with sufficient explanations by investigators must be secured. Therefore, in a sequence of clinical trials, what kinds of scope, stage, and method of explanations provided by investigators, including doctors or researchers, to trial subjects are closely related to the compensation for damages by violation of liability for explanation. In case of application of clinical trials to patients who have critical illness such as cancer, issues of "Quality of Life" regarding trial subjects, cancer patients, should be discussed. Especially, in case of clinical trials for terminal cancer patients, the right of subjects' self-determination, which is a fundamental principle in medical behaviors, should be discussed. The right of self-determination includes participation in clinical trials for the possibility of life-sustaining even a little bit, or no participation in clinical trials in order to have a time for completing the rest of his life. Like this, if the extent and scope of explanations related to the issues of "Quality of Life" are raised as main issues, the evaluation of "Quality of Life", should be a prerequisite. In many occasions, realistically, despite bad results such as deaths or serious adverse drug reactions after clinical trials, it may not be easy for compensating to trial subjects or their survivors, who requested civil compensation for damage. Futhermore, in abnormal results after concealment of clinical trials or performance of clinical trials without permission, and in the case of trial subjects' failures of proving proximate cause between the clinical trials and abnormal results, problematic results such as no protection to the trial subjects could be occurred. In performing clinical trials, investigators should provide sufficient explanations for trial subjects and secure voluntary informed consents from the trial subjects. Therefore, clinical trials without trial subjects' permissions and the informed consent process violate trial subjects' rights of self-determination, and the investigators shall be liable for compensation for damages. Then, issues might be addressed are what are essential contents of patients' "rights of self-determination" infringed by clinical trials without subjects' permissions. Two perspectives about patients' rights of self-determination might be considered. One perspective regards physical distress of patients (subjects) from therapies without sufficient explanations as the crux of the matter. The other perspective regards infringement of human dignity caused by being subjects without permission as the crux of the matter irrespective of risks' big and small influences. This research follows perspective of the latter. Forming constant fiduciary relation between investigators (doctors) and subjects (patients) pursuant medical contracts, and in accordance with this fiduciary relation, subjects, who are patients, have expectations of explanations and treatments by the best ways. If doctors and patients set this forth as a premise, doctors should assume civil liability when doctors infringe patients' expectations.

• Journal of the Korean Society of Costume
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• v.57 no.1 s.110
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• pp.28-38
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• 2007

This study is on the image of a woman's body exposure, expressed in various situations or images in the modern fashion. The results of this study can be summarized as the following. First, either the exposure or stress of a woman's specific body parts like breast, waist, hips, or legs which can be sensed totally different from man's or the ironic disclosure of body parts always lapped around emphasizes femininity by giving full play the unique sexual beauty of a woman's body. Second, the desire of disclosure to have others' attention with the concealment as suggestive exposure expresses the eroticism. The modified eroticism is found different from the conventional concept and is based on the desire to make others notice one's existence continually by the sexual exposure dress particularly to entire the other sex, the dismantlement of changing an underwear to an outer-dress, and so forth. Third, both exposure of a woman's sexual body parts and expression of exposure to the utmost by laying a woman's entire body bare can mean sex liberty in the laissez-faire generation. This may suggest a pleasure-oriented way of thinking of the self-consolation rather than showing others, or feature the personality and the liberty endowed women with.

• Fashion & Textile Research Journal
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• v.15 no.5
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• pp.671-681
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• 2013

Persona means the mask of personality where the internal ego exposes itself to the outside. The complicated structure and diversity of contemporary society has provided men with a more variegated and diversified persona; in addition, advancements in internet and information communications creates the possibility for the emergence of more variegated and new persona. This study probes the persona of virtual space expressed in fashion designs; subsequently, this study reviews the concept and various characteristics of persona and examines the type of persona in the virtual space from the perspective of the manifestation of identity. The type of persona in the virtual space canbe categorized into flexible identity and falsified identity; subsequently, the characteristics and meanings of virtual space persona in fashion designs are analyzed. Flexible identity-oriented personas expressed in fashion designs are revealed through the images of animals or dolls. This is a childlike persona expression that expresses ego through other substances in an effort to express infantile substances such as dreams and fantasy cherished in childhood. Falsified identity-oriented personas are expanded as a realm of expression of the body and the realities are camouflaged as transformed persona. Negating existence itself by covering the eyes or face as well as the concealment of the body with masks or veils is an expression of a self-denying persona.

• Cross-Cultural Studies
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• v.33
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• pp.263-286
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• 2013

Is this a right way in politics that attitude of Japanese scholars to separate Natsume Soseki from the expansionism of pre-war Japan to protect 'sanctity'? Nowadays, most Japanese scholars are regarded to share the desire that minimize the memory of the behavior of Japanese Imperialism in East Asia, such as Korea, China, etc. Furthermore, 'the desire to minimize' inescapably concluded in avoidance, concealment, at last the temptation of deliberate misleading. Until now, the controversy about the Natsume Soseki's travel to Korea and Manchuria has repeated in defence and criticism surrounding the self-awareness and recognition of others of Natsume Soseki, making the expression in a record of Natsume's travel as the subject of study, for example, the degrading expression about Chosun people and scorn for Chinese and Russian. This paper will investigate that Natsume's travel is the political practice which is combined with the desire for the empire, focusing on the political context in the action of journey of Natsume and its contents other than the expression itself.

• International Journal of Advanced Culture Technology
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• v.9 no.4
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• pp.288-294
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• 2021

There are various ways to be infected with malicious code due to the increase in Internet use, such as the web, affiliate programs, P2P, illegal software, DNS alteration of routers, word processor vulnerabilities, spam mail, and storage media. In addition, malicious codes are produced more easily than before through automatic generation programs due to evasion technology according to the advancement of production technology. In the past, the propagation speed of malicious code was slow, the infection route was limited, and the propagation technology had a simple structure, so there was enough time to study countermeasures. However, current malicious codes have become very intelligent by absorbing technologies such as concealment technology and self-transformation, causing problems such as distributed denial of service attacks (DDoS), spam sending and personal information theft. The existing malware detection technique, which is a signature detection technique, cannot respond when it encounters a malicious code whose attack pattern has been changed or a new type of malicious code. In addition, it is difficult to perform static analysis on malicious code to which code obfuscation, encryption, and packing techniques are applied to make malicious code analysis difficult. Therefore, in this paper, a method to detect malicious code through dynamic analysis and static analysis using Trojan-type Downloader/Dropper malicious code was showed, and suggested to malicious code detection and countermeasures.

• Journal of the Korean Society of Costume
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• v.51 no.6
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• pp.5-24
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• 2001

This paper is intended to explore femininity the ideal beauty of body and the features in fashion pursued in the Fashion system and the Anti-Fashion Movement in the Victorian period, on which the modern fashion is based. For the informative facts needed in this paper, books on history, fashion history, feminism, art history of aestheticism and the ideal beauty of body are referred to. On the part Ⅱ of this paper, the femininity and the ideal beauty of body implied in the Aesthetic Movement and Rational Dress Movement as the anti-fashion movement in the Victorian period will be reviewed. Following are the conclusion : First, the works in Aesthetic Movement mainly include the image of sensual female. The essence of femininity is categorized by cultural value, poetic spirit. appetite for sex and self-expression. The ideal beauty of body pursued in this movement is the beauty of immatured body, which means rejection of maternity as well as appetite for sex in the form of metaphor of the power and enthusiasm of female. The features of Aesthetic Movement emphasize the image of sensual and characteristic woman. These features are expressed in the natural waist line and the vertical H silhouette of high waist, natural exposure of body by means of drapery, simplicity and decency by design without fixed forms and seemingly faded colors. Second, Rational Dress Movement attempted to evaluate the femininity in a different way and ultimately pursued masculinity. Therefore, morality, liberty, intelligence, spirituality, self-control, willingness, which had been believed to exclusively belong to male, are added to the categories of femininity. The ideal beauty of body is expressed in the form of Venus Coelestic which is refined and strong. This symbolizes woman's freeing from the fate of reproduction and subordinate relationship with male, morality, decision of one's own and willingness. The features of Rational Dress Movement represent the image of strong-willed and moral woman in its internal meaning. The features of its fashions represent the concealment of the body, emphasis on activeness in pants without decoration and simplicity in its external form. All these features resulted from the pursuit of masculinity.

• Journal of the Korea Society for Simulation
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• v.30 no.3
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• pp.11-17
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• 2021

The 30mm anti-aircraft gun has been developed with various types of weapon systems such as protective, protective complex, and wheel-type anti-aircraft artillery. The role of this anti-aircraft gun is an important anti-aircraft weapon in charge of air defense. Anti-aircraft weapons are tasked with defending the airspace from aircraft attacks. In particular, anti-aircraft weapons are organized in combination with mechanized units. And anti-aircraft weapons are prone to attack by enemies because they operate on the front lines of the battlefield. The enemy is expected to attack our troops by covering up or concealing as much as possible in order to increase their viability. Therefore, this study analyzed whether our 30mm anti-aircraft bullets could subdue the enemy in cover. This study analyzed the performance of 30mm anti-aircraft bullets using the M&S technique. For this study, live shooting and simulation method by M&S were used for the experiment. In this study, steel plate and plywood were used for the live shooting experiment. In addition, in the simulation process through M&S, this study used the PRODAS model, AUTODYN model, and Split-x model to analyze the trajectory, penetration, and fragmentation capability of 30mm anti-aircraft bullets. According to the experimental results, it has been proven that 30mm anti-aircraft bullets can destroy enemy armored vehicles. 30mm anti-aircraft bullets succeeded in quickly subduing enemies concealed in general buildings or forests. In this way, it was possible to minimize damage to allies in advance.

• Journal of Korean Academy of Nursing
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• v.25 no.4
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• pp.641-652
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• 1995

Working as nurses, authors found that some patients were not content with their hospital life. Some patients wanted to move to another ward, and others complained about their ward atmosphere. In spite of patients' discomfort, nurses didn't know what made some patients complain about their ward. So, authors tried to find factors that influence atmosphere of hospital wards of the neurosurgery patients. To know the atmosphere of wards, authors selected five neurosurgery ward of a university hospital in Seoul. Observation took a month. An author observed using molar approach, in the morning, in the day time, and in evening time. Authors used concealment /no intervention technique. An author checked condition of people in the wards, and observed their verbal and nonverbal communication behavior their activities and environmental characteristics, and interpreted their meaning through ethnographic research methodology by Spradly. Authors found there was an important factors that influence the atmosphere of ward. It was a human and his attitude. At least one person who was willing to help others made ward atmosphere better. Helping others physically whenever needed, sup-porting the depressed emotionally, offering foods, or talking to others friendly brought good atmosphere. On the contrary, if everyone was indiffernt to others, the atmosphere became cold. Self-centered or selfish behaviors such as occupying too much area, using the toilet too long, covering other's suction bottle without permission and seeing others delicate or urinate were hurtful. In addition to the attitude of patients and their families, unkindness of medical teams including nurses and doctors and tasteless meal caused bad ward atmosphere. Based on this research finding, authors suggest the followings. A For the better atmosphere of ward 1. Nurses should try to make the ward atmosphere better by introducing new patient to older ones. 2. Every ward should have dividing curtains to keep patient's privacy. 3. All hospital personnel should be kind enough to make patients feel that they are repected. 4. Hospital should serve high quality meals to patients. 5. Patients had better stay with those in the similar condition. B. For the future studies 1. Repeated researches are necessary to check reliability of this results. 2. Researches for patients in different area such as ICU, or hemodialysis unit are necessary.