• Journal of Computing Science and Engineering
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• v.7 no.4
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• pp.285-299
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• 2013

To enable hard real-time systems to take advantage of multicore processors, it is crucial to obtain the worst-case execution time (WCET) for programs running on multicore processors. However, this is challenging and complicated due to the inter-thread interferences from the shared resources in a multicore processor. Recent research used the combined cache conflict graph (CCCG) to model and compute the worst-case inter-thread interferences on a shared L2 cache in a multicore processor, which is called the CCCG-based approach in this paper. Although it can compute the WCET safely and accurately, its computational complexity is exponential and prohibitive for a large number of cores. In this paper, we propose three counter-based approaches to significantly reduce the complexity of the multicore WCET analysis, while achieving absolute safety with tightness close to the CCCG-based approach. The basic counter-based approach simply counts the worst-case number of cache line blocks mapped to a cache set of a shared L2 cache from all the concurrent threads, and compares it with the associativity of the cache set to compute the worst-case cache behavior. The enhanced counter-based approach uses techniques to enhance the accuracy of calculating the counters. The hybrid counter-based approach combines the enhanced counter-based approach and the CCCG-based approach to further improve the tightness of analysis without significantly increasing the complexity. Our experiments on a 4-core processor indicate that the enhanced counter-based approach overestimates the WCET by 14% on average compared to the CCCG-based approach, while its averaged running time is less than 1/380 that of the CCCG-based approach. The hybrid approach reduces the overestimation to only 2.65%, while its running time is less than 1/150 that of the CCCG-based approach on average.

• Journal of Convergence for Information Technology
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• v.8 no.5
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• pp.69-75
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• 2018

The purpose of access control is to prevent computing resources from illegal behavior such as leakage, modification, and destruction by unauthorized users. As the cloud computing environment is expanded to resource sharing services using virtualization technology, a new security model and access control technique are required to provide dynamic and secure cloud-based computing services. The virtualization management convergence access control model provides a flexible user authorization function by applying the dynamic privilege assignment function to the role based access control mechanism. In addition, by applying access control mechanism based on security level and rules, we solve the conflict problem in virtual machine system and guarantee the safeness of physical resources. This model will help to build a secure and efficient cloud-based virtualization management system and will be expanded to a mechanism that reflects the multi-level characteristics.

• Korean Journal of Agricultural Science
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• v.42 no.3
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• pp.231-235
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• 2015

This study was performed to investigate the change of the body surface temperature during socialization of weaning pigs. A total of 108 piglets (Landrace 60 and Yorkshire 48) aged 31 (${\pm}1.1$) day was used for this study. Experiment was designed as follows; familiar group (T1), randomly mixed with unfamiliar piglets (T2), mixed based on weight of unfamiliar piglet (T3). The transport and mixing of pigs were performed at 10:00, and then body surface temperature was taken by thermo-graphic camera after 4 hours (14:00). Average surface temperature and hot-spot-temperature, which is the hottest spot of the body surface, were analyzed using Testo IRsoft 3.1 software. Average temperature of body surface were 36.0, 38.2, and 37.5 in T1, T2, and T3, respectively. Average of body surface temperature in T2 and T3 were higher (p<0.001) than T1, and average temperature of body surface of T3 was greater (p<0.001) than that of T2. The hot-spot-temperature of T1, T2, and T3 were 38.7, 39.5, and 39.6, respectively. The hot-spot-temperature of T2 (p<0.01) and T3 (p<0.001) were significantly higher than that of T1. Above results demonstrate that grouping unfamiliar pigs leads to increase in the body temperature possibly by pigs aggressive behavior during social conflict. By the result on average body temperature, this study suggests that the mixing with similar body weight would increase the struggle time and frequency.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.2 no.1
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• pp.43-48
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• 1991

The College entrance examination stress syndrome is a kind of anxiety disorder. The underlying cause of this disorder is not a test anxiety itself. One's hidden inner and familial conflicts are more likely attributed to this disorder. Patient's the most common complaints are various psychosomatic symptoms but in severe cases underlying psychopathology may be activated and progress to major psychosis. In a broad sense adolescent's delinguent behavior, drug abuse, school drop-out and sucide are closely related to this syndrome. In clinical management of these patients, considering the special situation of impending examination, the therapist must access to central conflict theme in a short time without severe resistance. The authors classified this syndrome into 5 clinical subtypes ; 'the anxious group', 'the exhaustion group', 'the despair group', 'the emptyness group' and 'the boredome group'. Typical case of each subtype and it's management methods were presented briefly.

• Journal of Korean Society of Forest Science
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• v.80 no.3
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• pp.287-295
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• 1991

Overuse and damage to natural resources from inappropriate visitor behavior is a type of social dilemmas faced by many recreation areas. Social dilemmas in natural recreation resource management are the conflict between the individual's own benefit and that of the collectivity. Social dilemmas may be defined by two properties : (1) Each individual in a group receives a higher payoff for a socially defecting choice than for a cooperative choice, regardless of others' choices, and (2) each individual receives a higher payoff if all group members cooperate than if all defect. There are two approaches to solve the social dilemmas in National Parks, the structural solutions and the individual solutions. Establishment of superordinate authority, selective incentives, and privatization of common resources are included in the structural approaches, while face-to-face interaction and communication among group members in the individual approaches. To aid in generalizing from specific results to other situation, data from laboratory and field experiments are interpreted in the light of social dilemma theory.

• The Journal of the Korea Contents Association
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• v.19 no.11
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• pp.247-261
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• 2019

Demand/withdraw communication is an important dysfunctional pattern of serial arguing. This study aims at addressing factors that affect the ways in which self-demand/partner-withdraw pattern increases the likelihood of persistence of serial arguing. We posit that sensitivity to rejection is positively related to the degree to which individuals perceive a partners' behavior as generally disconfirming, which is positively related to enactment of self-demand/partner-withdraw during an argumentative episode. This sequence is positively related to perception of arguments as unresolved. In addition, among those who reported their argument was resolved, this sequence is positively related to the likelihood that the argument is resolved without mutual agreement. Serial mediation analysis confirmed that the likelihood of resolution without mutual agreement were positively associated with rejection sensitivity partially because high RS individuals are likely to perceive their partner to be generally disconfirming and to enact self-demand/partner-withdraw communication during the episode. However, this pattern did not apply to perception of the argument as resolved.

• Journal of Families and Better Life
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• v.21 no.3
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• pp.171-180
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• 2003

In this study, the characteristics and patterns of family problems were explored. What constituted family problems, and how those evolved over the period of drastic changes in the Korean society were examined, by analyzing articles published from the 1940s to the 1980s in the four major national newspapers in Korea. A total of 6542 articles related to family problems in the four newspapers, Chosun, Dong-A, Kyunghyang, and Seoul, were used for the content analysis of this study. The main categories of family problems were classified as poverty, marital issues, issues related to children and adolescents, elderly issues, problems in the family as an institution, and the so-called family-lag problem. Each of these categories consisted of several subcategories: The poverty-related problems included the problems caused by difficulty in making a living and instability of living, for example. The marital issues category consisted of conflicts between the couple, unfaithful spouses, domestic violence, divorce, and so on. Issues related to children and adolescents included juvenile delinquency, difficulty in bringing up children, child abuse, single motherhood, and underage household heads, for example. The elderly issues included the anxiety over the aging society, support for the elderly, conflicts between mother-in-law and daughter-in-law, alienation of the elderly, etc. Problems in the family as an institution consisted of the legal issues in such areas as marriage, succession of the family head, and adoption. Lastly, the family-lag problem included confusion over family values, and conflict caused by the inconsistency between consciousness and actual behavior related to the family or family crisis. From the 1940s to the 1980s, family-lag was the most common problem (26.2% of the total articles), followed by issues related to children and adolescents (23.1%), poverty (16.2%), marital issues (15.9%), elderly issues (12.4%), and problems in the family as an institution (6.0%). During the 1940s and the 1950s, poverty was a prominent problem, and in the 1960s, issues related to children and adolescents were most commonly addressed in the articles. In the 1970s and the 1980s, the family-lag problem was the most frequently addressed.

• Journal of the Korean Society of Costume
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• v.56 no.9 s.109
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• pp.14-23
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• 2006

The purpose of this study is to identify the esthetic features of femme fatale character fashions, which are shown in Movie . The feature of evil femineity is the attribute of evil which brings men to ruin by the dangerous, cunning, and cruel trick, and is expressed in black color, red color, and slash fashion. This fashion shows the dark reverse side of women's sexual desire in relation to anxiety, evil, and death. The feature of sensuality evokes physical pleasures or desires, and maximizes the exposure of sexual regions by tightening or loosening women's body. In the fashion expressing this feature, the forms are fit or loose silhouette. and the colors are black and red. and the materials are soft. This fashion seems to deconstruct the past concept of sex consciousness and emphasize the independent and autonomous femineity. The feature of positiveness combines feminine elements with masculine elements in relation to power elements. This feature is expressed in tailored suit and trousers, with few patterns and details, and in black color and gray color. This fashion reflects the aggressive, challenging, and independent femineity, and expresses the potential defense for the weakness and danger of female body. The feature of purity expresses the earnest and truthful mind, and is expressed in the soft and light one-piece dress, the elegant suit, and the pink color and black color fashion. This fashion shows angel-like and reliable womanly beauty, but at the same time shows women's attribute which changes their behavior and thinking every moment, so that this fashion shows women's double-sided attribute which combines women's weakness and violence, or tenacity and conflict.

• Korean Journal of Human Ecology
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• v.5 no.1
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• pp.1-13
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• 2002

The purpose of this study was to verify the effectiveness of the parent education program through play to improve the relationships between mothers and children. The subject of this study consisted of 30 mothers with 4-7 aged child attending S-day-care center located in Ik-San. In order to examine the effectiveness of the parent education program through play, two groups were divided into 15 participants each. The experimental group participated in the parent education program for total 8 sessions(2 sessions per week over the 4 weeks) while the control group didn't. The instrument were 'Maternal Affection & Control Resources Scale developed by Cho, Bok Hee(1991) and 'Teacher-Child relationship Scale' by Pinata & Steinberg. Teacher-Child relationship Scale was modified to be appropriate for use with this program. Parental acceptance level was measured by modified Parental Acceptance Scale (P.P.A.S.) by porter(1954). The data were analyzed by SPSSWIN program. The statistical methods for data analysis were frequency, t-test. paired t-test. The main results of this study were as follows : First, the mothers who participated in the parent education program through play showed improvement in affectionate attitudes than before. Second, the mothers who participated in the parent education program through play have been improved in familiarity and have been decreased in conflict of relationships of mother-child than those who did not participated in. Third, the mothers who participated in parent education program through play improve the recognition on respect to children's emotion, emotional expression right, uniqueness of children's temperament and needs to children's independency and autonomy.

• The Journal of the Korea Contents Association
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• v.16 no.12
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• pp.233-243
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• 2016

The movie offers a chance to observe the social signifier and the sensitivity of audiences who feel sympathy with the tragic history of crown prince Sado. While watching the movie, the audience halts between ideas whether to go back to "primary ego", or to play the unconscious hypocrisy or the ingrained social behavior which is to resolve the internal conflicts while they face two contrary opinions; one is the obedient subject to obey fatherness, as a symbol of historic value and convention in a society, and the other is the resistant body to break the bond of convention. The audience may feel some ambivalent feelings of the moral values between the paternal authority and the existential philosophical value of 'self'. This study will observe the audience's response of Sado toward the moral norms of the society when they face the signifier of father in the movie with experience the conflict between their resistant ego and madness. Also the study will discuss that the social landscape such as norms, order, and legal system is ever-changing and open to be subverted by the future even though audience hope that the present moral value with which we are content ever-last.