• KSII Transactions on Internet and Information Systems (TIIS)
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• v.14 no.7
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• pp.2904-2918
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• 2020

With a huge demand for replicated content on the Internet, a new networking paradigm called information-centric networking (ICN) has been introduced for efficient content dissemination. In ICN, named content is distributed over the network cache and it is accessed by name instead of a location identifier. These aspects allow users to retrieve content from any of the nodes having replicas, and consequently 1) network resources are more efficiently utilized by avoiding redundant transmission and 2) more scalable services are provided by distributing server loads. However, in-network caching in ICN brings about a new type of security issues, called content poisoning attacks, where fabricated content is located in the network cache and interferes with the normal behavior of the system. In this paper, we look into the problems of content poisoning in ICN and discuss security architectures against them. In particular, we reconsider the state-of-the-art schemes from the perspective of feasibility, and propose a practical security architecture.

• The Journal of Pediatrics of Korean Medicine
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• v.20 no.3
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• pp.143-160
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• 2006

Objectives : As the side effect brought up by internet game addiction, many reports come out, but most of past articles are for middle or high school students. There is seldom a poisoning game treatise to a primary school student, if there is treatise, it is real condition that treatise for lead pipe with psychological reasons is seldom discussion about physical symptoms. This research searches high grade elementary students' game use actual conditions and when divide to general user group, latent danger use group, high dangerous use group, according to serious illness degree of game poisoning, three groups and game poisoning happens, recognized about body symptoms that happen much. Methods : Target population of these questionnaire are fifth and sixth grade elementary student of Seoul city 2 school. Chose 263 elementary students, 144 men, 119 women who understand purpose of research and admit participation is 25 October, 2006 since 1 September, 2006 Results : As poisoning serious illness degree is high, there are many number of game times, much more boys are addicted to internet game than girs, insomnia is apt to happen frequently in game poisoning danger group, and correlation is high by megrim, shoulder ache, digestive trouble. Insomnia, symptoms that show next even if some symptoms show first because there is high correlation between megrim, shoulder ache, digestive trouble is high possibility to happen among four symptoms. Insomnia, megrim, shoulder ache, digestive trouble that happen by internet game poisoning, is apt to increase by increasing addiction. Symptoms treatment can divide by internal treatment that treat insomnia, megrim, digestive trouble, external treatment that is typical symptoms of VDT syndrome shoulder ache, headache, fatigue persimmon. Root treatment is mind symptoms treatment. Game addiction treatment is relationship method 'seven emotions injury treatment' in oriental medicine. 'promote the normal flow of qi' and 'adjustment of suitable emotion' can talk as pivotal point of treatment.

• Journal of The Korean Society of Clinical Toxicology
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• v.2 no.2
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• pp.77-82
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• 2004

Backgrounds: Deaths from pesticides poisoning has increased annually, but no studies have been reported. Especially paraquat is suspected to be a major material in pesticide poisoning deaths. In Korea, simple epidemiology of pesticides poisoning is not well known. So, there is no effective method to prevent pesticides poisoning. We tried to investigate the present status of pesticides poisoning with data from Korea National Statistical Office and suggest an effective counterplan. Methods: We analysed death cause data derived from Korean Statistical association, deaths causes being pesticides poisoning in the year 2002. Also, we investigated data from internet, mainly from Korea National Statistical Office home page. Results: Total 2,875 persons died after pesticides poisoning in 2002 year. Average age is 54.2 year, standard deviation being 17.7 year. Many victims (about $41\%$) died during the herbicides' non-necessary period (JanuaryMarch, October-December) Conclusion: Herbicides sale should be restricted only during herbicides' necessary period, and so called a pesticides safety supervisor system shall effectively prevent herbicides poisoning.

• Journal of KIISE
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• v.43 no.11
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• pp.1233-1244
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• 2016

In the IoT network environments for LLNs(Low power and Lossy networks), IPv6 Routing Protocol for Low Power and Lossy networks(RPL) has been proposed by IETF(Internet Engineering Task Force). The goal of RPL is to create a directed acyclic graph, without loops. As recommended by the IETF standard, RPL route recovery mechanisms in the event of a failure of a node should avoid loop, loop detection, DIO Poisoning. In this process, route recovery time and control message might be increased in the sub-tree because of the repeated route search. In this paper, we suggested RPL route recovery method to solve the routing overhead problem in the sub-tree during a loss of a link in the RPL routing protocol based on IoT wireless networks. The proposed method improved local repair process by utilizing a route that could not be selected as the preferred existing parents. This reduced the traffic control packet, especially in the disconnected node's sub tree. It also resulted in a quick recovery. Our simulation results showed that the proposed RPL local repair reduced the recovery time and the traffic of control packets of RPL. According to our experiment results, the proposed method improved the recovery performance of RPL.

• The Korean Journal of Health Service Management
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• v.10 no.4
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• pp.213-223
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• 2016

Objectives : This study was conducted to examine the educational status and needs of both parents and kindergarten teachers pertaining to the prevention of infectious diseaes in children. Methods : The participants were 280 parents and 147 kindergarten teachers. Data were collected from August 21, 2013 to December 30, 2014. Results : Only 16.7% of parents had educational experience with infectious diseases. The source of their education was broadcast media and their preferred educational method was the internet. Parents reported that the childhood infection about which they should be educated were influenza (30.4%) followed by hand-foot-and-mouth disease (13.9%), food poisoning (6.4%), and so on. About 27.2% of kindergarten teachers had received an education about infectious diseases, and the major source of their education was refresher training. The teachers' preferred educational method was the internet. The teachers wanted to be educated about influenza (22.4%), hand-foot-and-mouth disease (20.4%), food poisoning (20.4%) and so on. Conclusions : Educational programs should be developed and applied to children, parents and kindergarten teachers based on consideration of their educational needs.

• The Korean Journal of Emergency Medical Services
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• v.24 no.3
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• pp.117-128
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• 2020

Purpose: This study analyzed the information and accessibility of toxic substances provided to Internet websites. Methods: From August 1, 2020, to August 31, 2020, we analyzed eight internet websites regarding toxic pharmaceuticals, pesticides, and chemicals. The website-evaluation criteria were divided into five categories for information and five categories for website convenience. Results: All eight websites about toxic substances were hosted by reliable institutions or organizations and provided accurate information in terms of informational relevance. The website run by the Safety and Health Corporation scored the highest with 100points. Analysis of the websites' accessibility to non-members' revealed that six (75.0%) were accessible, but two (12.5%) provided only limited information. Access to information through mobile apps was only available in three of the eight cases (37.5%). Conclusion: This study can be used as a reference for Internet websites about toxic substances. Toxicological information that can be viewed only with membership and manager approval requires membership in advance of viewing. In addition, emergency medical personnel working at a site or hospital should be familiar with the characteristics of toxicity information retrieval.

• Journal of Digital Contents Society
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• v.10 no.2
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• pp.309-318
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• 2009

The youth of this research using the Internet, navigate to the factors and relationships with Internet addiction, and the sense of seeking and want to verify the effectiveness of the regulation of interpersonal relationships. Who was studied 347 high school students in the Gyeonggi Province. SPSS win 13.0 program to study the reliability coefficient was calculated and analysis of care. Regression analysis, control theory verification (MMR) was conducted. Factor analysis using the Internet when the Internet addiction affect, interpersonal relationships and the pursuit of a sense of interaction was confirmed by the positive control the effects. Verification results of this research using the Internet to the fact that Internet addiction Static (+) gave. Pursuit of interpersonal relationships and a sense of control and the interaction effects were different.

• Journal of Digital Convergence
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• v.9 no.6
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• pp.103-111
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• 2011

This study parent-children relationship with the youth of the Internet was to evaluate the impact on. Internet excess utility of adolescents was to influence the, and how we received its relation the influence. This study distinguished their patent-children relation according to the violence and non-interference level and Internet excess utility contains an everyday life problem, we can not do the work to plan, the excess Internet usage, and the complications of the another person. This distinguished with genernal, potent risk, high risk category. The result was as follows: First, potent risk and high risk category appeared in the parent-children relation to be the no- interference. This means that parent-children relation has an influence on internet excess utility of adolescent. Second, the role of parents is important to reduce internet utility of adolescent, and it must understand so that the development stage is careful. We need the supply for adolescent with play and experience program development which can enjoy the leisure culture. We need internet poisoning expert training and the treatment must be achieved with the counselling to be continuous to problem adolescents.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.15 no.9
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• pp.3243-3257
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• 2021

Deep neural networks provide excellent performance in pattern recognition, audio classification, and image recognition. It is important that they accurately recognize input data, particularly when they are used in autonomous vehicles or for medical services. In this study, we propose a data correction method for increasing the accuracy of an unknown classifier by modifying the input data without changing the classifier. This method modifies the input data slightly so that the unknown classifier will correctly recognize the input data. It is an ensemble method that has the characteristic of transferability to an unknown classifier by generating corrected data that are correctly recognized by several classifiers that are known in advance. We tested our method using MNIST and CIFAR-10 as experimental data. The experimental results exhibit that the accuracy of the unknown classifier is a 100% correct recognition rate owing to the data correction generated by the proposed method, which minimizes data distortion to maintain the data's recognizability by humans.

• Korean Journal of Human Ecology
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• v.20 no.3
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• pp.665-675
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• 2011

The purpose of this study was to examine the attitude toward food safety and the HACCP of college students in Daejeon. 51.9% of respondents had experienced food poisoning. The main symptoms of food poisoning were diarrhea(73.4%), stomachache(57.3%), and vomiting(24.7%). Most students answered that food hygiene was important and more students in private residences recognized the importance of food hygiene than in non-private residences (p<0.05). More information about hygine was obtained from TV & radio(44.9%) than the internet(38.1%). Half of them were afraid of food safety and more females felt unsafe about food sold than males(p<0.01). 37.6% of them were aware of HACCP, more females(44.6%) than males(28.4%) had such knowledge(p<0.001). The more information they had on HACCP, the higher the perception of the HACCP mark(p<0.001). 45.4% of them had seen HACCP mark on food packages and more females had seen it than males(p<0.001), 64% of them purchased HACCP products, The more information they had on HACCP, the more experience they had with HACCP consumption(p<0.001), 44% of them were willing to buy HACCP products. Males(32.3%) wanted to buy HACCP products for their health and females(49.6%) wanted to buy HACCP products if they were the same price (p<0.001). Education about food hygiene and HACCP should be conducted for collage students' health though TV, radio, and the internet.