• Proceedings of the Korea Information Processing Society Conference
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• 2008.11a
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• pp.1363-1366
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• 2008

최근 Skype의 인기와 더불어 P2P기반의 VoIP에 대한 관심이 높아지고 있다. 이에 표준 콜 셋업 프로토콜인 SIP와 동등 계층 간 통신망 구성의 P2P 기술을 결합하여 분산된 VoIP 서비스를 제공하려는 연구가 활발하게 진행 중에 있다. P2P에서는 중앙 엔티티가 존재하지 않으므로 사용자의 위치정보를 효율적으로 분산시키고 신속한 검색 방법을 제공하는 것을 중요한 문제로 다루고 있다. P2PSIP에서는 파일공유 목적의 P2P 서비스와는 다르게 특정 사용자의 각종정보(위치, 프로파일 등)를 빠르고 정확하게 찾아내야한다. 분산된 사용자의 위치정보를 검색하기 위하여 주로 DHT를 사용하고 있다. 하지만 매번 새로운 접속마다 사용자의 위치를 다시 찾아야 하기 때문에 오버레이 네트워크의 트래픽을 증가시킨다. 또한, 오버레이 네트워크에 참여하는 노드의 수가 증가함에 따라 사용자의 검색시간이 길어지는 단점을 가지고 있다. 본 논문에서는 DHT로 찾아낸 사용자의 접속패턴 히스토리 정보를 캐쉬로 저장하여 호 설정 지연을 감소시키는 방안을 제안한다.

• Journal of Haehwa Medicine
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• v.13 no.2
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• pp.317-326
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• 2004

Administrating PalMoolGoonJaTang and SipIMiGwanJungTang to 40-weeks-(old Wistar rat for 10 weeks so, I researched into weight change, weight change of internal organ, and hemtological and serological changews. Then I got these conclusions. 1. Observed gain in weight than control group form of SipIMiGwanJungTang to aged Wistar rat. 2. Is thought to promote activation of living body action gaining intestine weight along with gain in weight. 3. Displayed decrease of MDA's content of serum than control group form of SipIMiGwan JungTang to aged Wistar rat. 4. Change that is Wistar rat's hematological value by aging according to 10, 30, 50 week WBC, RBC, Hgb, monocytes, eosinophil etc. increase, and HCT, PLT etc. showed tendency that decrease according to old-week, and observed improvement that is hematological value than control group form of SipIMiGwanJungTang 5. Change that is Wistar rat's biochemical value by aging was measured highest in 50 week because ALT, AST, BUN, CRN, T-bili., T-chol., TG, TP, ALB, A/G, P etc. increase according to 10, 30, 50 week, and observed improvement that is biochemical value than control group form of SipIMiGwanJungTang As those results, PalmoolGoonJaTang and SipIMiGwanJungTang are effective against dacline of physical function as aging. Moreover, considered to the serogical results, SipIMiGwanJungTang is much more effective than the other.

• Journal of Society of Preventive Korean Medicine
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• v.3 no.2
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• pp.151-170
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• 1999

This study was to investigate the metal accumulation from SipJeonDaeBo-Decoction to rat blood of Sprague Dawley. 1. There were no significance in body weight, water dose feed ingestion quantity, liver, kidney, brain, bone weights between the control and the experimental groups. Under the experiment with drinking waters was no metal ${\sim}\;0.65mg/L$ detected. Metal level within feed found 0.0001-376.983mg/kg. 2. In the pack of SipJeonDaeBo-decoction, there detected no metal ${\sim}2.086mg/L$ 3. After P.O(per os) SipJeonDaeBo-decoction, As is detected $2.390{\pm}0.812mg/kg$ in blood; Cd $0.001{\pm}0.001mg/kg$, Co $0.003{\pm}0.001mg/kg$, Cr $0.432{\pm}0.234mg/kg$, Cu $1.013{\pm}0.373mg/kg$, Fe $426.293{\pm}114.842mg/kg$, no Hg, Mn $0.109{\pm}0.082mg/kg$, Ni $0.122{\pm}0.068mg/kg$, Zn $3.584{\pm}1.270mg/kg$. 4. The concentration of Hazardous heavy metal (As, Cd, Co, Cr, Hg, Ni, Pb) within blood control group is searched $0.488{\pm}0.138\;mg/l$; experiment I group $0.432{\pm}0.080mg/l$, experiment II group $0.588{\pm}0.213mg/l$. In the concentration of non hazardous heavy metal(Cu, Fe, Mn, Zn) control group $101.409{\pm}6.832mg/l$; experiment I group $96.062{\pm}5.732\;mg/l$, experiment II group $125.139{\pm}044.820mg/l$. 5. Correlation among every metal in blood Zn and Cr was 0.87956 ; Cd and As -0.02316, Pb and As -0.08738, Ni and As 0.07824, Mn and As 0.07824, Mn and Cd 0.04999. Briefly under the injection of SipJeonDaeBo-decoction, this study was defined within safety in blood level by P.O. during 10 days.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.47 no.10
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• pp.57-66
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• 2010

Today the various types of communication and application service are provided by the development of Internet and IP technologies. It is expected to be extended the service domain of two networks through the interconnecting P2PSIP overlay which is highlighted as an important technologies for Internet based services and IMS(IP Multimedia Subsystem) which is the new architecture adopted in the evolution of NGN. Therefore, this paper explains the possible methods of the service expansion with interconnecting P2PSIP overlay and IMS network. Specially this paper suggests the interconnection architectures of P2PSIP overlay and IMS network as subscriber's types and analyzes the traffic analysis model and session set up delay characteristics by simulation model. As a results, this paper shows that the interconnection architecture using gateway AS(Application Server) is the excellent method to interconnect the IMS in case of P2PSIP overlay only subscriber, and that interconnection architecture using I-CSCF is good method to interconnect the IMS in case of P2PSIP overlay and IMS subscriber.

• Journal of Microbiology
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• v.40 no.2
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• pp.140-145
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• 2002

The 5.8 kb pMMH1, rolling-circle replication (RCR) plasmid of the wild type soil Bacillus mesentericus was developed into a novel secretion vector system in Bacillus subtilis. The pMMHl turned out to have a replication origin and two open reading frames (ORFs) of the putative γ-GTP and type I signal peptidase (sipP). To characterize the regions necessary for plasmid stability and high copy number, five vectors (pPS, pPP, pEN, pMN, pME) were constructed by disruption or deletion of each region in pMMH1. Like pMMHl all constructed vectors were stable over 100 generations In a non-selective medium. Since pPS was the smallest (2.3 kb)of all, it was selected for the construction of a navel secretion vector, Using the $\alpha$-amylase promoter/signal sequence of B. subtilils the novel plasmid pJSN was constructed. When $\beta$-glucosidase was expressed using pJSN, we found $\beta$-glucosidase activity in the medium. This result strongly suggested that plasmid pJSN can be used for the production of bioactive peptides in B. subtilis.

• Proceedings of the KSAR Conference
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• 2002.06a
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• pp.70-70
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• 2002

Sphingosine-1-phosphate(S1P) is one of the sphingolipid metabolites which affect a variety of cellular processes including the proliferation, differentiation, growth, survival, migration and gene expression. The present study was undertaken to investigate the effect of SIP on nuclear maturation of porcine oocytes. In vitro maturation frequency of porcine oocytes were compared in three different media; group Ⅰ: NCSU23＋0.1% PVA, group Ⅱ: NCSU23＋10% PFF(porcine follicular fluid), and group Ⅲ: NCSU23＋10% PFF＋10 ng/㎖ EGF＋2.5 mM β-mercaptoethanol. Each group containing 0.1 ㎎/㎖ cysteine was divided into 4 sub-groups of SIP concentration(0, 50, 500 and 5000nM). Porcine oocytes were incubated in each maturation medium supplemented with hormones(10 IU/㎖ PMSG and 10 IU/㎖ hCG) for 22h and then further cultured in the same medium without the hormones for 22h. After completion of in vitro maturation, the oocytes were fixed and stained to examine nuclear maturation by using a rapid stain method. In the group Ⅰ, the proportions of metaphase Ⅱ stage among oocytes cultured in 0nM(control), 50 nM, 500nM and 5000nM S1P were 45.5%, 66.7%, 56.6% and 48.7%, respectively. (omitted)

• Journal of Korean Academy of Nursing
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• v.31 no.5
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• pp.912-920
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• 2001

The purpose of this study is to identify the correlation that exists between quality of life and self-efficacy of schizophrenic patients, focusing on the influence of related factors on these varables. Method: The subjects of this study were 151 schizophrenic patients. The data were collected using questionnaires. The instruments used for this study were the general self-efficacy scale developed by Sherer ＆ Maddex(1982), the specific self-efficacy scale modified and complemented by these co-researchers on the basis of the past studies and modified SIP by Voruganti(1996). The period of data collection was from July. 2000 to Jan. 2001. Data analysis was done by SPSS, t-test, ANOVA and the Pearson Correlation Coefficient. Result: 1. The level of self-efficacy showed a mean score of 60.0 and the level of quality of life, a mean score of 47.0. 2. The general characteristics affecting the self-efficacy of schizophrenic patients were staying with family (p=0.05) and employment (p=0.00). 3. The general characteristics affecting the quality of life of schizophrenic patients were staying with family (p=0.04), employment (p=0.05) and duration of illness (0.03). 4. A positive correlation was identified between self-efficacy and quality of life (r=-0.469, p=0.000). Conclusion: The study suggests that nursing intervention strategy should be worked out to develop a psychiatric rehabilitation program that can promote self-efficacy and thus enhance the quality of life of schizophrenic patients.

• Proceedings of the PSK Conference
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• 2002.10a
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• pp.96-97
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• 2002

Lysophosphatidic acid (LPA) and sphingosine 1-phosphate (SIP) are bioactive lysophospholipids (LPs) that act as mediators in various cellular processes, such as cell growth, differentiation, survival, motility, and cytoskeletal reorganization (1,2). LPA and S1P are both abundant in serum and are produced by activated platelets and other cell types. (omitted)

• Journal of Mushroom
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• v.9 no.1
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• pp.3-16
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• 2011

In the bipolar basidiomycete Pholiota nameko, a pair of homeodomain protein genes located at the A mating-type locus regulates mating compatibility. In the present study, we used a DNA-mediated transformation system in P. nameko to investigate the homeodomain proteins that control the clamp formation. When a single homeodomain protein gene (A3-hox1 or A3-hox2) from the A3 monokaryon strain was introduced into the A4 monokaryon strain, the transformants produced many pseudo-clamps but very few clamps. When two homeodomain protein genes (A3-hox1 and A3-hox2) were transformed either separately or together into the A4 monokaryon, the ratio of clamps to the clamp-like cells in the transformants was significantly increased to approximately 50%. We, therefore, concluded that the gene dosage of homeodomain protein genes is important for clamp formation. When the sip promoter was connected to the coding region of A3-hox1 and A3-hox2 and the fused fragments were introduced into NGW19-6 (A4), the transformants achieved more than 85% clamp formation and exhibited two nuclei per cell, similar to the dikaryon (NGW12-163 ${\times}$ NGW19-6). The results of real-time RT-PCR confirmed that sip promoter activity is greater than that of the native promoter of homeodomain protein genes in P. nameko. So, we concluded that nearly 100% clamp formation requires high expression levels of homeodomain protein genes and that altered expression of the A mating-type genes alone is sufficient to drive true clamp formation.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.48 no.12
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• pp.9-16
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• 2011

Most of the current mobility management protocols such as MIPv4/6 and its variants standardized by the IETF do not support global seamless handover. This is because they require comprehensive changes of the existing network infrastructure. In this article, we propose a simple mobility management protocol (SMMP) which can support global seamless handover between homogeneous or heterogeneous wireless networks. The idea is that the SMMP employs separate location management function as done in SIP to support global user and service mobility. In addition, the bidirectional tunnels are dynamically constructed to support seamless IP mobility by extending the IEEE 802.21 MIH standards. The detailed architecture and functions of the SMMP have been designed. Finally, the simulation results, using NS-2, show that the proposed SMMP outperforms the existing MIPv6 and HMIPv6 in terms of handover latency, packet loss, pear signal noise ratio (PSNR).