• Title/Summary/Keyword: Self-discovery

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Analysis for Ad Hoc Routing Protocol based-on Dynamic Source Routing (Dynamic Source Routing 기반의 Ad Hoc Routing Protocol 분석)

  • 이광재;김탁근;김동일;최삼길
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2001.10a
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    • pp.121-124
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    • 2001
  • Dynamic Source Route(DSR) protocol is a simple and efficient routing protocol designed specially for use of the multi-hop Ad Hoc Network. DSR allows the network to be completely self-organized and self-configured without the need for any existing infrastructure or administration. DSR protocol consists of the two mechanisms of Router discovery and Router Maintenance, works entirely On-demand in all aspects. In this paper, we will present the performance of DSR protocol on the multi-hop wireless Ad Hoc Networks, illustrate it with simulation, and then analysis the algorism of DSR.

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Consistent Distributed Lookup Service Architecture for Mobile Ad-hoc Networks

  • Malik Muhammad Ali;Kim Jai-Hoon
    • International Journal of Contents
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    • v.2 no.2
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    • pp.29-31
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    • 2006
  • Mobile Ad hoc network is a self configuring network of mobile nodes. It allows mobile nodes to configure network spontaneously and share their services. In these networks, service discovery is very important because all nodes do not have same resources in term of memory and computing power. Nodes need to use different services offered by different servers. Some service discovery protocols have been proposed in last couple of years but they include significant traffic overhead and for small scale MANETS. In this paper, we present extensible lookup service scheme based on distributed mechanism. In our scheme neighboring nodes of service provider monitor service provider and send notification to lookup server when the service provider terminates its services unexpectedly. Lookup server can find other service provider or other alternative services in advance because of advance notification method and can provide consistent lookup services. In our scheme neighboring nodes also monitor lookup server and send notification to network when lookup server terminates unexpectedly. Simulation results show that our scheme can reduce up to 70% and 30% lookup failure as compare to centralize and simple distributed mechanism respectively.

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Non-Practice of Breast Self Examination and Marital Status are Associated with Delayed Presentation with Breast Cancer

  • Ghazali, Sumarni Mohd;Othman, Zabedah;Cheong, Kee Chee;Lim, Kuang Hock;Wan Mahiyuddin, Wan Rozita;Kamaluddin, Muhammad Amir;Yusoff, Ahmad Faudzi;Mustafa, Amal Nasir
    • Asian Pacific Journal of Cancer Prevention
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    • v.14 no.2
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    • pp.1141-1145
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    • 2013
  • Delay in seeking treatment for breast cancer is a barrier to the early diagnosis and management of the disease, resulting in a poorer prognosis. We here estimated the prevalence of delayed presentation for breast cancer and identified possible influential sociodemographic factors in a cross-sectional study of 250 patients diagnosed with primary breast cancer at the Radiotherapy and Oncology Clinic in Kuala Lumpur Hospital. Data were collected by face-to-face interview using a structured questionnaire and from medical records. We examined associations between delayed presentation (presenting to a physician more than 3 months after self-discovery of a symptom) and sociodemographic characteristics, practice of breast self examination (BSE), history of benign breast disease, family history of breast cancer and type of symptom, symptom disclosure and advice from others to seek treatment using multiple logistic regression. Time from self-discovery of symptom to presentation ranged from tghe same day to 5 years. Prevalence of delayed presentation was 33.1% (95%CI: 27.4, 39.3). A significantly higher proportion of delayers presented with late stages (stage III/IV) (58.3% vs. 26.9%, p<0.001). Divorced or widowed women (OR: 2.23, 95% CI: 1.11, 4.47) had a higher risk of delayed presentation than married women and women who never performed breast self examination were more likely to delay presentation compared to those who regularly performed BSE (OR: 2.74, 95% CI: 1.33, 5.64). Our findings indicate that delayed presentation for breast cancer symptoms among Malaysian women is high and that marital status and breast self examination play major roles in treatment-seeking for breast cancer symptoms.

The Aspect on the Leisure-Activity of Sasul-Sijo (사설시조에 나타난 여가활동의 양상)

  • Ryoo Hae-Choon
    • Sijohaknonchong
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    • v.21
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    • pp.23-46
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    • 2004
  • The purpose of this thesis is to clarify the aspect on the Leisure-Activity of Sasul-Sijo in Choson Dynasty. The Aspect on the Leisure-Activity of Sasul-Sijo can be divided into three type, Three type are the recreation. the health-care, and the self-discovery. The type of the recreation is reversed the Youth age-Leisure in the second chapter, the type of the health-care is reversed the Old age-Leisure in the third chapter, the type of the self-discovery is reversed the Youth age and Old age-Leisure in the fourth chapter. In order to study the Aspect on the Leisure-Activity of Sasul-Sijo which have succeeded up to present without interruption, it is to gather more materials, widen an appreciative eye our leisure-activity and deepen the till now study continuously.

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Conflict-Overcoming and Self-Discovering: A Study of Caleb, the Protagonist in Steinbeck's Novel "East of Eden" (갈등의 극복과 자아의 발견; 스타인벡의 소설 "에덴의 동쪽"의 주인공 갈렙(Caleb)에 근거한 연구)

  • Kim, Wooyoung
    • The Journal of the Convergence on Culture Technology
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    • v.10 no.3
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    • pp.427-436
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    • 2024
  • In this paper, we present the results of a study of lessons learned from the life of Caleb (Cal), a significant character in John Steinbeck's "East of Eden." His life serves as a powerful example of the process of self-discovery, overcoming conflicts with self, others, and society. He emphasizes the importance of managing and understanding your emotions, learning to acknowledge and express them throughout your journey. He makes moral judgments while confronting desires and conflicts, and transparently demonstrates the importance of self-determination based on ethical decisions, while his honest expression and acceptance of his own emotions emphasizes the core value of emotion management and understanding. Additionally, his story emphasizes the clear importance of understanding and compromise in human relationships. We present a thorough exploration of these topics and consider how the lessons from Caleb's story can be applied to our everyday lives. As a result of the analysis in this paper, we expect to gain insight into how these lessons can be applied and put into practice.

Service Discovery Mechanism based on Trustable DHT in MANET (MANET에서 신뢰성 있는 DHT기반의 서비스 발견 기법)

  • Han, In-Sung;Ryou, Hwang-Bin
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.13 no.9
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    • pp.1947-1954
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    • 2009
  • Service discovery mechanism is a core technique for getting a desired service in MANET(Mobile Ad-Hoc NETwork) environment. However, As feature of MANET, existing mechanisms have some problem that service requester search for trustable service. also it can not support scalability. in this paper, how to reliably support applications such as service discovery on top of MANET. we are firstly finding a trustable service provider and configure DHT(Distributed Hash Table). P2P's DHT can be adopted to service discovery mechanism because P2P and MANET share certain similarities, primarily the fact that both are instances of self-organizing decentralized systems. Especially, Proposed DHT systems used for P2P overlay network can be effective in reducing the communication overhead in service discovery. So proposed mechanism can support for reliably searching required service and scalability. Simulation results show that our mechanism is scalable and outperforms existing service discovery mechanism.

Self-tuning Robust Regression Estimation

  • Park, You-Sung;Lee, Dong-Hee
    • Proceedings of the Korean Statistical Society Conference
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    • 2003.10a
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    • pp.257-262
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    • 2003
  • We introduce a new robust regression estimator, self-tuning regression estimator. Various robust estimators have been developed with discovery for theories and applications since Huber introduced M-estimator at 1960's. We start by announcing various robust estimators and their properties, including their advantages and disadvantages, and furthermore, new estimator overcomes drawbacks of other robust regression estimators, such as ineffective computation on preserving robustness properties.

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Two-dimensional Surface Structures of Arenthiols Studied by STM

  • Gwon, Gi-Yeong
    • Proceedings of the Korean Vacuum Society Conference
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    • 2012.02a
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    • pp.89-89
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    • 2012
  • Arrangement of individual atoms and molecules with atomic precision and understanding the resulting properties at the molecular level are ultimate goals of chemistry, biology, and materials science. For the past three decades, scanning probe microscopy has made strides towards these goals through the direct observation of individual atoms and molecules, enabling the discovery of new and unexpected phenomena. This talk will discuss the origin of forces governing motion of small organic molecules and their extended self-assembly into two-dimensional surface structures by direct observation of individual molecules using scanning tunneling microscopy (STM).

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A study on Generating Molecules with Variational Auto-encoders based on Graph Neural Networks (그래프 신경망 기반 가변 자동 인코더로 분자 생성에 관한 연구)

  • Cahyadi, Edward Dwijayanto;Song, Mi-Hwa
    • Proceedings of the Korea Information Processing Society Conference
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    • 2022.11a
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    • pp.380-382
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    • 2022
  • Extracting informative representation of molecules using graph neural networks(GNNs) is crucial in AI-driven drug discovery. Recently, the graph research community has been trying to replicate the success of self supervised in natural language processing, with several successes claimed. However, we find the benefit brought by self-supervised learning on applying varitional auto-encoders can be potentially effective on molecular data.

A Study on the Method for the Self-Reflection of Librarianship (사서직의 자아성찰 방안 제시에 관한 연구)

  • Lim, Seong-Gwan
    • Journal of Korean Library and Information Science Society
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    • v.47 no.4
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    • pp.511-535
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    • 2016
  • This study focuses on the fact that the awareness of problems concerning self-reflection has not been sufficiently addressed in the realm of Library and Information Science, although it has an important effect on the professional development and individual maturity of librarians. Recent research on self-reflection, which is only at the beginning stages of study, has brought up the need for additional and more in-depth analyses of factors that influence self-reflection. This study on the progress of overall research will show the current status and definition of librarians' self-reflection. The study will also illuminate and make suggestions to help direct future research along the lines of librarians' self-reflection and corresponding educational requirements.