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Efficient and secure source authentication scheme for multicast user authentication

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Journal of Central South University 2013年第10期20卷 2741-2746页

作者： JEONG yoon-su LEE Sang-hyuk shin Seung-soo Department of Information Communication Engineering Mokwon University Department of Electrical and Electronic Engineering Xi’an Jiaotong-Liverpool University Department of Information Security Tongmyong University

Multicast technology application has been widely utilized in broadband internet. Source authentication is one of the most needs for many multicast applications transferring real-time information such as stream video and online news. Because multicast current services provided to the group members are changed dynamically, data transferring by a group member is not used by the recipient. In order to verify the identity of the sender who sent the packet and to make sure that the data have not been tampered, an optimized source authentication scheme has been proposed to transfer the authentication information not to the next-door packet. The proposed method for multiple packets authenticates the source with a limited number of electronic signatures. The proposed method can reduce overhead compared to the method by adding a digital signature for every packet. In addition, by sending the generated electronic signature to the first packet and the last packet, it prevents the loss of consecutive packets, as well as a source authentication can be provided in real-time services.

关键词： multicast packet source authentication broadband Internet

Behavioral consequences of children with sleep-disordered breathing after adenotonsillectomy

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World Journal of Pediatrics 2018年第1期14卷 57-65页

作者： Ji yoon Kim Chang Ho Lee Hyoung-mi Kim Otorhinolaryngology Department CHA UniversitySeongnamKorea Otorhinolaryngology Department CHA Bundang MedicalCenterCHA University351Yatap-dongBundang-guSeongnam-siGyeonggi-do463-712Korea

Background Adenotonsillectomy (AT) has been an effective treatment for sleep-disordered breathing (SDB) in children, and several studies described the risk of postoperative weight gain and obesity in children treated with AT. The present study aimed to evaluate behavioral improvements in children with SDB one year after adenotonsillectomy and to investigate an influence of postoperative weight gain on behaviors. Methods The study included 170 children aged 5–11 years who underwent adenotonsillectomy for SDB and 150 controls. Body mass index percentile was obtained for age and gender, and parental sleep-related breathing disorder (SRBD) question-naire was used to assess the severity of SDB. Psychological assessment was performed pre- and post-adenotonsillectomy using standardized questionnaires including strength and difficulties questionnaire, children's depression inventory and screen for child anxiety-related emotional disorder. Results The mean age of 170 patients was 7.7 ± 1.5 years with 73 (42.9%) girls and 97 (57.1%) boys. The mean follow-up period were 15.4 ± 2.7 months. The patients had shown significant improvements in SDB scores as well as in questionnaire-based behavioral problems after adenotonsillectomy. The odds of a child being overweight were significantly increased after adenotonsillectomy. Less improvements in hyperactivity and conduct problems were observed in the patients with older ages, higher SRBD scores, and overweight/obesity at 1-year follow-up after adenotonsillectomy. Conclusion These data suggest that abnormal behavioral outcomes should be evaluated postoperatively, which potentially could be reduced with the early adenotonsillectomy and adequate postoperative weight control.

关键词： Obesity Obstructive sleep apnea Pediatric Snoring Tonsillectomy

The effect of diet-induced insulin resistance on DNA methylation of the androgen receptor promoter in the penile cavernosal smooth muscle of mice

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Asian Journal of Andrology 2013年第4期15卷 487-491,I0007页

作者： Jin-Wook Kim mi-mi Oh Cheol-Yong yoon Jae-Hyun Bae Je-Jong Kim Du-Geon Moon Department of Urology Korea University Medical Center Guro Hospital Seou1152-703 Korea and Department of Urology Korea University College of Medicine Seou1152 703 Korea

Population studies have suggested an association between diabetes and the symptoms of testosterone deficiency. Recently, the expression of the androgen receptor （AR） has been shown to be decreased in diabetic patients. Furthermore, diabetes has been shown to induce global methylation. In this study, we used an animal model to investigate whether diabetes results in increased methylation of the AR promoter and whether these changes are associated with the decreased expression of AR in penile cavernosal smooth muscle tissue. Twenty C57BL/6J mice were divided into two groups, receiving either high- （mature diabetic） or low- （mature control） caloric meals for 14 weeks. Another 10 mice were killed at 1 week （young control）. Animals in the mature diabetic group showed decreased testosterone levels, although this was not statistically significant. In both control groups, no significant methylation was observed in the AR promoter region CpG island （-85 to ＋339）. In the mature diabetic group, significant methylation was observed at ＋ 185 and ＋200 of the AR promoter. These changes were associated with increased homeostatic model assessment for insulin resistance （HOMA-IR） and decreased corpus cavernosal tissue mass and expression of AR mRNA and protein. We conclude that in these animals, insulin resistance increased the methylation of the GC-rich regions of the AR promoter, leading to decreased AR expression.

关键词： androgen receptor (AR) diabetes DNA methylation

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Journal of Central South University 2014年第9期21卷 3534-3540页

作者： LEE Sang-hyuk YAN Sun JEONG yoon-su shin Seung-soo Department of Electrical and Electronic Engineering Xi'an Jiaotong-Liverpool University International Business School Suzhou Xi'an Jiaotong-Liverpool University Department of Information Communication Engineering Mokwon University Department of Information Security Tongmyong University

Information analysis of high dimensional data was carried out through similarity measure application. High dimensional data were considered as the a typical structure. Additionally, overlapped and non-overlapped data were introduced, and similarity measure analysis was also illustrated and compared with conventional similarity measure. As a result, overlapped data comparison was possible to present similarity with conventional similarity measure. Non-overlapped data similarity analysis provided the clue to solve the similarity of high dimensional data. Considering high dimensional data analysis was designed with consideration of neighborhoods information. Conservative and strict solutions were proposed. Proposed similarity measure was applied to express financial fraud among multi dimensional datasets. In illustrative example, financial fraud similarity with respect to age, gender, qualification and job was presented. And with the proposed similarity measure, high dimensional personal data were calculated to evaluate how similar to the financial fraud. Calculation results show that the actual fraud has rather high similarity measure compared to the average, from minimal 0.0609 to maximal 0.1667.

关键词： high dimensional data similarity measure difference neighborhood information financial fraud

A comparison of anionic and cationic flotation of a siliceous phosphate rock in a column flotation cell

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mining Science and Technology 2011年第1期21卷 147-151页

作者： Al-Thyabat Salah yoon Roe-Hoan shin Dongcheol Department of mining Engineering Faculty of EngineeringAl-Hussein Bin Talal UniversityMaanJordan Center for Advanced Separation(CAST) Virginia Polytechnic Institute and State UniversityVirginiaUSA

Flotation performance of a de-slimed（-150＋53μm）Jordanian siliceous phosphate was evaluated in a batch laboratory flotation column 100 cm high and 5 cm inside *** collector used during anionic flotation was sodium oleate while an amine acetate（AEROmiNE 3100C）was used for cationic *** comparison at different collector dosage,superficial gas velocity,and frother concentration showed that the maximum difference in performance between cationic and anionic flotation was obtained with these flotation parameters：30×10^（-6）（mg/L）frother concentration,250 g/t collector concentration,and 3.4 cm/s superficial gas *** these operating conditions amine （cationic）flotation gave 7%higher flotation recovery,a 6%cleaner concentrate grade,and was 6%more efficient at removing silica.

关键词： Anionic flotation Cationic flotation Siliceous phosphate Jordanian phosphate Column flotation Anionic-cationic flotation

Authentication mechanism for fast handoff in cdma2000-WiBro interworking

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Science China(Information Sciences) 2010年第1期53卷 137-146页

作者： HONG Do Won KIM Je yoon shin Sang Uk Electronics and Telecommunications Research Institute Penta Security Systems Inc. Pukyong National University

In this paper, we propose the authentication mechanism for a handoff in cdma2000-WiBro interworking environment. In the interworking environment, the handoff procedure requires the authentication on MS for the access control and the accounting. In the handoff procedure, it is required to perform the EAP-AKA authentication process with cdma2000-HN (home network) because TN (target network) does not have the information for the authentication about MS. This process has relatively long delay. Therefore, the fast handoff authentication mechanism for reducing the long delay in the handoff procedure is needed. Thus this paper proposes the handoff authentication method of using the reactive context transfer and ticket forwarding method, to provide the fast handoff in cdma2000-WiBro interworking environment. The proposed scheme satisfies security requirements on handoff and has the advantage of low signaling overhead in handoff authentication.

关键词： authentication cdma2000 WiBro interworking handoff

Anomaly Detection Based on Discrete Wavelet Transformation for Insider Threat Classification

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Computer Systems Science & Engineering 2023年第7期46卷 153-164页

作者： Dong-Wook Kim Gun-yoon shin Myung-Mook Han Department of Computer Engineering Gachon UniversitySeongnam-si13120Korea Department of AI Software Gachon UniversitySeongnam-si13120Korea

Unlike external attacks,insider threats arise from legitimate users who belong to the *** individuals may be a potential threat for hostile behavior depending on their *** insider detection,many intrusion detection systems learn and prevent known scenarios,but because malicious behavior has similar patterns to normal behavior,in reality,these systems can be ***,because insider threats share a feature space similar to normal behavior,identifying them by detecting anomalies has *** study proposes an improved anomaly detection methodology for insider threats that occur in cybersecurity in which a discrete wavelet transformation technique is applied to classify normal *** *** discrete wavelet transformation technique easily discovers new patterns or decomposes synthesized data,making it possible to distinguish between shared *** verify the efficacy of the proposed methodology,experiments were conducted in which normal users and malicious users were classified based on insider threat scenarios provided in Carnegie Mellon University’s Computer Emergency Response Team(CERT)*** experimental results indicate that the proposed methodology with discrete wavelet transformation reduced the false-positive rate by 82%to 98%compared to the case with no wavelet ***,the proposed methodology has high potential for application to similar feature spaces.

关键词： Anomaly detection cybersecurity discrete wavelet transformation insider threat classification

Effectiveness of lorazepam-assisted interviews in an adolescent with dissociative amnesia A case report

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Neural Regeneration Research 2013年第2期8卷 186-190页

作者： Yuna Seo mi-Hee shin Sung-Gon Kim Ji-Hoon Kim Department of Psychiatry Aram Hospital Department of Psychiatry Pusan National University School of Medicine Division of Child-Adolescent Psychiatry Department of Psychiatry Pusan National University School of Medicine

To facilitate gathering information during a psychiatric interview, some psychiatrists advocate augmenting the interview using drugs. Rather than barbiturates, benzodiazepines have been used for drug-assisted interviews. Dissociative amnesia is one of the indications for these interviews. Herein, we present the case of a 15-year-old female who was diagnosed as having dissociative amnesia because of conflicts with her friends. She was administered a Iorazepam-assisted interview to aid recovery of her memories. In this case, a small dose of Iorazepam was sufficient to recover her memories without any adverse effects.

关键词： neural regeneration clinical practice dissociative amnesia dissociative disorder dissociation drug-assisted interview amobarbital, Iorazepam benzodiazepine adolescent memory loss emotional distress distress grant-supported paper neuroregeneration

A Unified Buffering Management with Set Divisible Cache for PCM Main Memory

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Journal of Computer Science & Technology 2016年第1期31卷 137-146页

作者： Mei-Ying Bian Su-Kyung yoon Jeong-Geun Kim Sangjae Nam shin-Dug Kim Department of Computer Science Yonsei University Seoul 120-749 Korea

This research proposes a phase-change memory （PCM） based main memory system with an effective combi- nation of a superblock-based adaptive buffering structure and its associated set divisible last-level cache （LLC）. To achieve high performance similar to that of dynamic random-access memory （DRAM） based main memory, the superblock-based adaptive buffer （SABU） is comprised of dual DRAM buffers, i.e., an aggressive superblock-based pre-fetching buffer （SBPB） and an adaptive sub-block reusing buffer （SBRB）, and a set divisible LLC based on a cache space optimization scheme. According to our experiment, the longer PCM access latency can typically be hidden using our proposed SABU, which can significantly reduce the number of writes over the PCM main memory by 26.44%. The SABU approach can reduce PCM access latency up to 0.43 times, compared with conventional DRAM main memory. Meanwhile, the average memory energy consumption can be reduced by 19.7%.

关键词： memory hierarchy memory structure,cache memory buffer management