• Journal of Korean Society for Atmospheric Environment
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• v.21 no.6
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• pp.573-583
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• 2005

Fugitive dust, which is emitted in the ambient air without first passing through a stack or duct designed to control flow, is frequently generated by means of wind erosion from storage yards at Pohang Steel Wokrs. The size distribution of fugitive dust is mostly in the range of coarse particulate which is deposited as soon as emitted and less harm to human health; however $20\%$ of fugitive dust contains PM 10 known as one of most harmful airborne pollutant. Consequently, effective control and reduction of fugitive dust is strongly requested by the local society, but it is not easy so far because the generation and dispersion of fugitive dust highly depends on meteorological conditions, and it being occurred for irregularity. This research presented a fugitive dust control system for each meteorological condition by providing statistical prediction data obtained from a statistical analysis on the probability of generating the threshold velocity at which the fugitive dust begins to occur, and the frequency occurring by season and by time of the wind direction that can generate atmospheric pollution when the dispersed dust spreads to adjacent residential areas. The research also built a fugitive dust detection system which monitors the weather conditions surrounding storage yards and the changes in air quality on a real-time basis and issues a warning message by identifying a situation where the fugitive dust disperses outside the site boundary line so that appropriate measures can be taken on a timely basis. Furthermore, in respect to the spraying of water to prevent the generation of fugitive dust from the storage piles at the storage yard, an advanced statistical meteorological analysis on the weather conditions in Pohang area and a case study of fugitive dust dispersion toward outside of working field during $2002\∼2003$ were carried out in order to decide an optimal water-spraying time and the number of spraying that can prevent the origin of fugitive dust emission. The results of this research are expected to create extremely significant effects in improving surrounding environment through actual reduction of the fugitive dust produced from the storage yard of Pohang Steel Works by providing a high-tech warning system capable of constantly monitoring the leakage of fugitive dust and water-spray guidance that can maximize the water-spraying effects.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.21 no.1
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• pp.193-198
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• 2017

Recently, as interest in health increases, various wearable devices such as smart watch and smart band which can measure user's biometric information are being studied. Conventional wearable devices service the measured biometric information in a form that provides simple monitoring, disease prevention, and exercise amount. However, the user is Lack to deal with the dangerous situation. In this paper, we propose a hazard notification system to address these problems. The biometric information measured by the acceleration sensor and the heart rate sensor is transmitted to the application through the Arduino in real time. It identifies the risk situation through sensor priority measurement and risk situation identification algorithm. If a dangerous situation occurs, a notification message is sent to the guardian indicating the current location of the user. Therefore, it can be expected that if a dangerous situation occurs to a user who needs protection, he can respond promptly.

• Journal of the Korea Society of Computer and Information
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• v.16 no.4
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• pp.101-110
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• 2011

A smart grid networks delivers electricity from suppliers to consumers using digital technology with two-way communications to control appliances at consumers' homes to save energy, reduce cost and increase reliability and transparency. Security is critically important for smart grid networks that are usually used for the electric power network and IT environments that are opened to attacks, such as, eavesdroping, replay attacks of abnormal messages, forgery of the messages to name a few. ZigBee has emerged as a strong contender for smart grid networks. ZigBee is used for low data rate and low power wireless network applications. To deploy smart grid networks, the collected information requires protection from an adversary over the network in many cases. The security mechanism should be provided for collecting the information over the network. However, the ZigBee protocol has some security weaknesses. In this paper, these weaknesses are discussed and a method to improve security aspect of the ZigBee protocol is presented along with a comparison of the message complexity of the proposed security protocol with that of the current ZigBee protocol.

• The Journal of the Korea Contents Association
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• v.12 no.1
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• pp.369-378
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• 2012

Asthma requires continuous long-term management with at least 5% outcome of general population as well as being the second cause of death and disability after cancer. The present study developed an efficient self management system based on the commercial mobile phone network. The spirometric test results are input to the mobile phone through the communication line connected to the portable spirometer. The doctor or the care-giver can search, identify, and review the data accumulated daily by the patient, and feedback to the patient necessary recommendations by short message and color mail services. Patient can also send an emergency call to the doctor and/or the care-giver. User interface was designed as convenient as possible for maximum efficiency of these operations. The present system provides a desired remote medical services, thus would enhance health management of chronic diseased patients.

• The Journal of the Korea Contents Association
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• v.16 no.7
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• pp.659-666
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• 2016

Effect of color is to the human in modern society, has become an important element from the mental psychological aspects. Color is to heal the dry emotion directed the feelings and emotions that occur in the message visually the human mind, the environment plays a role that will enhance the value of life in accordance with the color that has been expressed. In this study, the metal jewelry on the sides to eliminate monotonous color expression of the metal using a Ottchil and Porcelaine 150 paint by applying the method of representing, it shows changes in various colors. Chapter and comparative analysis to produce a metal piece of Ottchil and Porcelaine 150 paint. It was derived as a result of the defect. Advantage is a method in combination of this, in comparison with the general method of metal color expression, were able to variously express color effect, since the role of the surface coating, to prevent the vessels discoloration the variable problems can give complemented on. The disadvantage is, Ottchil appears Ottchil up phenomenon by constitution, Porcelaine 150 paint, when used in the dishes in the chemical composition, can be harmful to health. To apply to work in the this reference, trying to contribute to the practicality of implementation and artistry.

• Journal of Digital Convergence
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• v.14 no.2
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• pp.217-225
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• 2016

In this study, a dementia patient care monitoring system is suggested that uses a wearable type bluetooth beacon to prevent them from going missing. This system shows whether the patients stay within the manageable area and sends a warning message to their monitoring managers' or guardians' smart devices when they leave it. The feature of the system is that it provides the service based on indoor location that makes the beacon worn by dementia patients continuously transmit their location information to the managing server through the smart terminal installed indoors or in hospitals and that enables the monitoring managers or the guardians to receive messages sent from the server that tell the patients' whereabouts through their smart devices. The system suggested in this paper is believed to be a system that effectively contributes to the prevention of the dementia patients' going astray from the hospitals and facilities where they are taking care.

• Convergence Security Journal
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• v.13 no.6
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• pp.35-41
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• 2013

What is an alternative to medical information security of medical information more secure preservation and safety of various types of security threats should be taken, starting from the software design. Interspersed with medical information systems medical information to be able to integrate the real-time exchange of medical information must be reliable data communication. The software architecture design of medical information systems and sharing of medical information security issues and communication phase allows the user to identify the requirements reflected in the software design. Software framework design, message standard design, design a web-based inter-process communication procedures, access control algorithm design, architecture, writing descriptions, evaluation of various will procedure the establishing architecture. The initial decision is a software architecture design, development, testing, maintenance, ongoing impact. In addition, the project will be based on the decision in detail. Medical information security method based on the design software architecture of today's medical information security has become an important task of the framework will be able to provide.

• Journal of Digital Convergence
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• v.18 no.10
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• pp.517-526
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• 2020

This study aimed to understand the effects on preventive behavior intention to particulate matter by risk perception attitude and anxiety. Also, to expand applicable target and range of RPA model, add anxiety. To measure main variables of RPA model, did a survey with 570 college students. With a data, analyzed by correlation, one-way ANOVA and three-way ANOVA. As a result, perceived risk and efficacy effect on intention to preventive action and information seeking. And an anxiety factor effects on intention to preventive action and information seeking also. And distinguished 4 groups of RPA model, there were meaningful differences between intention to preventive action and information seeking by groups, and a factor of anxiety effects certain groups. As a result, it can suggest how to plan and enforce message on preventive campaign of particulate matter. In follow research, with social psychological factors, it will helpful to identify health activities about particulate matters.

• Journal of the Korea Society of Computer and Information
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• v.17 no.12
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• pp.121-129
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• 2012

In this paper, we proposed WBAN system model to management an application that requires low rate data transfer in IEEE 802.15.4. We have to use different wireless sensor network technology to transfer different date rate and emergency message in medical application service. A suitable system model for WBAN and a WBAN MAC protocol in order to solve these existing system problems are proposed. Firstly, the priority queuing was applied to contention access period, and the system model which could guarantee transmission of a MAC command frame was proposed. Secondly, the MAC frame was newly defined to use the system model which was proposed above. Thirdly, WBAN CSMA/CA back-off algorithm based on data transmission rate was proposed to enhance data throughput and transmission probability of the data frame which does not have priority in the proposed WBAN system. The proposed algorithm is designed to be variable CSMA/CA algorithm parameter, depending on data rate. For the evaluation of WBAN CSMA/CA algorithm, we used Castalia. As a result of the simulation, it is found that the proposed system model can not only relieve loads of data processing, but also probability of collision was decreased.

• Korean Journal of Clinical Pharmacy
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• v.24 no.4
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• pp.265-271
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• 2014

Objective: This study aims to explore the perception of off-label use of medications and the provision of informed consents from the general public's perspective. Methods: The study subjects (n=291) were recruited from 7 cities in Korea through a convenience sampling method. The self-administered questionnaire with 13 items was issued and collected. The study subjects who have had a pharmaceutical job were excluded. Results: The total of 231 respondents was included. Only 23% of respondents were familiar with the concept of off-label use of medications. Eighty five percent of respondents (n=196) stated that the prescribers should explain the off-label use of a medication to their patients. The preferred method for delivering the message was the oral explanation (n=122, 53%), followed by oral explanation plus a pamphlet (n=94, 41%). The safety issue is the most concerned aspect regarding the off-label drug use, also effectiveness and insurance coverage. The majority of respondents (n=217, 94%) agreed that the prescriber should get a consent from patients before prescribing medications for off-label use. They preferred written consent to oral consent (140 vs. 77). Conclusion: This study demonstrated general publics are infrequently aware of off-label use of medications. It is important to raise public awareness of the off-label use of medications and to openly discuss its pros and cons for safe and effective drug therapy.