• International Journal of Knowledge Content Development & Technology
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• 제7권4호
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• pp.27-50
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• 2017

The impact of social networking is varied from good to bad. Online activities have also been categorized into pros and cons of social networking, either as reported as hiding Internet activities among teenagers or killing loneliness among elderly. In terms of relationships, there have been argument over its closeness and quality of an online relationship in Internet settings. Looking at the contradiction in an innovative interaction between classic community communication and social media, there is an unknown scent of the future struggling and challenging both human communication and relationships in the presence of digital culture. This research uses Diffusion of Innovation to study the wide and continuous spread of digital culture in human communication; and, Media Dependency in learning and structuring the cognitive, affective and behavioral effects of social media on each person uses the media in different ways. This research will be using online survey to gain opinions from a social network site as an update of views and reflection of self-awareness to all levels of people. Social media like Facebook (FB) is perceived as a good tool of communication that it is able to bring closeness among the family members. The results show that social media like FB brings positive impact towards family members; it would help to build a better and harmonic society; and, relationships among family members and communication shall be improved and enhanced to the level of a united society.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제8권5호
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• pp.1801-1816
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• 2014

Because HTTP-related ports are allowed through firewalls, they are an obvious point for launching cyber attacks. In particular, malware uses HTTP protocols to communicate with their master servers. We call this an HTTP-based command and control (C&C) server. Most previous studies concentrated on the behavioral pattern of C&Cs. However, these approaches need a well-defined white list to reduce the false positive rate because there are many benign applications, such as automatic update checks and web refreshes, that have a periodic access pattern. In this paper, we focus on finding new discriminative features of HTTP-based C&Cs by analyzing HTTP activity sets. First, a C&C shows a few connections at a time (low density). Second, the content of a request or a response is changed frequently among consecutive C&Cs (high content variability). Based on these two features, we propose a novel C&C analysis mechanism that detects the HTTP-based C&C. The HAS-Analyzer can classify the HTTP-based C&C with an accuracy of more than 96% and a false positive rate of 1.3% without using any white list.

• International Journal of Knowledge Content Development & Technology
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• 제12권4호
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• pp.105-117
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• 2022

The study investigated digital literacy skills and utilization of online platforms for teaching by LIS educators in universities in Rivers State, Nigeria. The study was undertaken as a descriptive survey design. Three research questions and three hypotheses guided this study. The population of the study was twenty-six Lecturers from the three universities in Rivers State where library and information science are offered. The twenty-six constitute the sample size. Census sampling technique was adopted for the study. The instrument titled Digital Literacy Skills and Utilization of Online Platform for Teaching Questionnaire (DLSOPUQ) was used to elicit information from the respondents. Twenty-six copies of the questionnaire were administered and retrieved. Mean (${\bar{x}}$) was used to analyze the research questions and the null hypotheses was tested with t-test at 0.05 level of significance. The study revealed that there is no significant difference between digital literacy and utilization of online platforms for teaching by LIS educators in universities in Rivers State. Further findings revealed that LIS educators do not have the necessary skills to navigate the online environment for teaching without assistance. In conclusion LIS educators should be innovative and update their skills to meet up with global practice. It was recommended among others that LIS educators should be trained and retrained by the university management to cope with online teaching and provision of the right infrastructure by governments for effectives teaching and learning process.

• 한국산업융합학회 논문집
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• 제27권2_2호
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• pp.445-456
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• 2024

This study aims to suggest service improvement opportunities by analyzing user review data of the top three OTT service apps(Netflix, Coupang Play, and TVING) on Google Play Store. To achieve this objective, we proposed a framework for uncovering service opportunities through the analysis of negative user reviews from OTT service providers. The framework involves automating the labeling of identified topics and generating service improvement opportunities using topic modeling and prompt engineering, leveraging GPT-4, a generative AI model. Consequently, we pinpointed five dissatisfaction topics for Netflix and TVING, and nine for Coupang Play. Common issues include "video playback errors", "app installation and update errors", "subscription and payment" problems, and concerns regarding "content quality". The commonly identified service enhancement opportunities include "enhancing and diversifying content quality". "optimizing video quality and data usage", "ensuring compatibility with external devices", and "streamlining payment and cancellation processes". In contrast to prior research, this study introduces a novel research framework leveraging generative AI to label topics and propose improvement strategies based on the derived topics. This is noteworthy as it identifies actionable service opportunities aimed at enhancing service competitiveness and satisfaction, instead of merely outlining topics.

• 대한두경부종양학회지
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• 제33권2호
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• pp.9-15
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• 2017

The recently released the $8^{th}$ edition of the American Joint Committee on Cancer (AJCC) Staging Manual introduces significant modifications from the prior $7^{th}$ edition. In this paper, the contents of the new changes in the decision of cancer of the head and neck is summarized except changes in staging of skin and thyroid cancer. In addition to the 8th edition, 1) Addition of extracapsular involvement in metastatic lymph nodes (N category) 2) Oral cancer T classification change, 3) Staging of the pharyngeal cancer was divided into 3 chapters: high-risk human papilloma virus (HR-HPV) associated oropharyngeal cancer (OPC), non HR-HPV associated OPC and hypopharynx cancer (HPC), and nasopharynx cancer (NPC) 4) Changes in T and N classification in NPC, 5) In the case of cancer of unknown primary, P16-positive case is defined as HR-HPV related OPC, and EBV-positive case is defined as NPC. The process that led to these changes highlights the need to collect high-fidelity cancer registry-level data that can be used to confirm prognostic observations identified in institutional data sets. Clinicians will continue to use the latest information for patient care, including scientific content of the 8th Edition Manual. All newly diagnosed cases through December $31^{st}$ 2017 should be staged with the 7th edition. The time extension will allow all partners to develop and update protocols and guidelines and for software vendors to develop, test, and deploy their products in time for the data collection and implementation of the 8th edition in 2018. The 8th edition strikes a balance between a personalized, complex system and a more general, simpler one that maintains the user-friendliness and worldwide acceptability of the traditional TNM staging paradigm.

• 한국콘텐츠학회논문지
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• 제17권1호
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• pp.662-672
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• 2017

최근 모바일 기기와 근거리 무선 통신 기술 등의 발달로 기존 중앙 집중 처리 시스템의 한계를 개선하기 위해 모바일 P2P 네트워크에 대한 연구가 활발하게 진행되고 있다. 모바일 P2P네트워크에서 피어는 배터리, 메모리, 저장 공간 등과 같은 제한적인 요소들을 가진다. 모바일 P2P 네트워크에서 안전한 콘텐츠 공유를 위해서는 피어의 신뢰성이 판별되어야 한다. 본 논문에서는 제한된 모바일 P2P 네트워크에서 신뢰도를 판별하는 기법을 제안한다. 제안하는 기법은 피어의 평가 정보를 이용하여 직접적으로 피어가 평가한 값과 다른 피어가 평가한 간접적인 평가 값을 이용하여 피어의 신뢰성을 판별한다. 피어가 가지는 평가 정보로 최근 갱신 시간을 활용한다. 피어 평가 정보의 최근 갱신 시간을 비교하여 평가 정보 공유 시 중복되는 평가 정보를 감소시킨다. 성능 평가를 통해 제안된 기법이 메시지 수를 감소시키며 신뢰성에 대한 정확도를 향상 시키는 것을 입증한다.

• 한국컴퓨터정보학회논문지
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• 제15권1호
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• pp.71-81
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• 2010

일반적인 웹 환경에서도 웹 페이지에 포함되어 있는 웹뷰 콘텐츠의 갱신 상태와 재-계산 상태 또는 생성되는 과정에서의 변화는 파악하기가 어려우며, 만약 갱신이 되고 있는 도중에 읽기 작업이 수행되거나, 잘못된 갱신으로 인한 부정확한 콘텐츠의 사용으로 인한 문제가 발생하면 이에 대한 문제 해결은 매우 복잡하다. 이러한 문제를 해결하기 위하여 많은 연구가 이루어져 왔으나, 대부분 단일 사용자 환경에서의 웹뷰 연구로 분산된 환경에서의 적용은 문제가 있다. 이러한 이유로 본 연구에서는 웹뷰 콘텐츠의 운영 상태를 확인할 수 있는 방법으로 기존의 상태 전이 그래프를 확장하고 이에 대한 알고리즘을 제시하여 분산된 환경에서의 웹뷰 콘텐츠의 갱신 및 재-계산 상태 또는 생성되는 과정에서의 상태 변화를 설명할 수 있도록 하며, 구체화 웹뷰를 이용한 실험을 통하여 구체화 웹뷰를 사용하였을 경우와 사용하지 않았을 경우 그리고 네트워크의 상태에 따른 시간 분석과 웹뷰 콘텐츠의 크기에 따른 효율성에 대한 분석을 한다.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2002년도 춘계종합학술대회
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• pp.380-383
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• 2002

KLDP(리눅스 한글 문서 프로젝트, http://kldp.org)와 같이 많은 분량의 HTML 문서들로 이루어진 매뉴얼 사이트를 관리하는데 가장 어려운 점은 현수 참조(dangling reference), 오문 참조 (inaccurate content reference)와 같은 깨진 링크(broken link)를 관리하는 것이다. 본 논문에서는 웹사이트의 HTML 문서들 사이에 존재하는 관계성(Relationship)과 제약 조건(Constraints)을 정의하여, HTML 문서의 삽입, 삭제, 변경이 발생할 경우 사용자에게 통지하거나, 트리거를 수행하여 HTML 문서들의 무결성(Integrity)을 유지할 수 있도록 하는 HIMS(HTML Document Integrity Management System)시스템을 설계 및 구현하였다.

• 대한기관식도과학회지
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• 제16권2호
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• pp.83-90
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• 2010

The pathophysiology of Gastroesophageal reflux disease (GERD) has been known that it is developed when the offense-primarily the gastric acid-pepsin content of the refluxate-overcomes a 3-tiered esophageal protective defense. consisting of antireflux mechanisms, luminal clearance mechanisms, and tissue resistance. Laryngopharyngeal reflux (LPR), which is known as an extraesophageal variant of GERD, has been considered to be developed by transient lower esophageal sphincter relaxation (TLESR), direct mucosal injury by gastric contents, more sensitive mucosa compared to esophagus, and absence of buffering effect and aggravation of the injury due to pepsin. However, hypothesis of the pathophysiology in both entities are numerous and still lack of understanding for being a theory. There is no conflict that understanding the pathophysiology is necessary for resolving the problems of these diseases and numerous studies and results have been releasing. This review could provide clinicians dealing with GERD and LPR with applicable new information and help for overcoming the clinical obstruction.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2013년도 추계학술발표대회
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• pp.400-401
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• 2013

Mobility in a network causes link disconnections and link recovery is vital for reliability of a network. A link failure affects all the preceding nodes on a damaged routing path; creates communication delay, throughput degradation, and congestion. This paper proposes link recovery mechanisms in CCN based networks. Packet overhearing is used to update neighboring nodes information. The recovery is done by forwarding node resulting in low control overhead, and better efficiency. The proposed mechanisms increase overall performance of a typical CCN and simulation results show that our proposed scheme works very well in densely populated networks with high mobility.