• Journal of Korea Society of Digital Industry and Information Management
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• v.8 no.3
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• pp.23-31
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• 2012

With the advance of Smart TV technologies, TV watchers can enjoy the Internet and games while watching TV programs. Besides retrieving with some keywords in the Internet, people may want to access local information such as notifications from town, messages from children's schools, shopping information from local marts, and even reminder messages for visiting from hospitals while watching TV without using web-browser. In this paper, we introduce the daily life notification service scenarios and its functional and non-functional requirements. Furthermore, we also propose a system that provides the notification services, consists of smart TV apps and server systems. We also introduce the system architecture and the component design of the system. Our work will help smart TV service developers because this paper will give them some service scenarios, requirements, and system architecture and its component design.

• Management & Information Systems Review
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• v.39 no.1
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• pp.15-34
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• 2020

The purpose of this study was to investigate the effects of social face sensitivity on impulse buying tendency and satisfaction. This study was also to investigate the effects on the mediating effects of the impulse buying tendency in the relationship between social face sensitivity and satisfaction. For this purpose, this study was conducted to 266 subjects living in Busan, Korea. And the data was analyzed by SPSS 22 and Amos 25. The results of the study were as follows. First, others conscious social face and formality social face were related to impulse buying tendency. However, shame conscious social face was partially related to impulse buying tendency. Second, suggestion impulse buying and reminder impulse buying had significant effect on satisfaction, however stimulus impulse buying and pure impulse buying had not significant effect on satisfaction. Third, the empirical results showed others conscious social face had significant positive effect on satisfaction. But, formality social face and shame conscious social face have not significant effect on satisfaction. Finally, this study also found the mediating effects of the suggestion impulse buying and reminder impulse buying in the relation between others conscious social face and satisfaction. Based on the empirical results, implications focused on the social face sensitivity, impulse buying tendency and satisfaction were discussed.

• Journal of Information Processing Systems
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• v.12 no.3
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• pp.525-537
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• 2016

Data hiding is a wide field that is helpful to secure network communications. It is common that many data hiding researchers consider improving and increasing many aspects such as capacity, stego file quality, or robustness. In this paper, we use an audio file as a cover and propose a reversible steganographic method that is modifying the sample values using modulus function in order to make the reminder of that particular value to be same as the secret bit that is needed to be embedded. In addition, we use a location map that locates these modified sample values. This is because in reversible data hiding it needs to exactly recover both the secret message and the original audio file from that stego file. The experimental results show that, this method (measured by correlation algorithm) is able to retrieve exactly the same secret message and audio file. Moreover, it has made a significant improvement in terms of the following: the capacity since each sample value is carrying a secret bit. The quality measured by peak signal-to-noise ratio (PSNR), signal-to-noise ratio (SNR), Pearson correlation coefficient (PCC), and Similarity Index Modulation (SIM). All of them have proven that the quality of the stego audio is relatively high.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.15 no.12
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• pp.4508-4530
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• 2021

Today distributed data storage service are being widely used. However lack of proper means of security makes the user data vulnerable. In this work, we propose a Randomized Block Size (RBS) model for secure data storage in distributed environments. The model work with multifold block sizes encrypted with the Chinese Remainder Theorem-based RSA (C-RSA) technique for end-to-end security of multimedia data. The proposed RBS model has a key generation phase (KGP) for constructing asymmetric keys, and a rand generation phase (RGP) for applying optimal asymmetric encryption padding (OAEP) to the original message. The experimental results obtained with text and image files show that the post encryption file size is not much affected, and data is efficiently encrypted while storing at the distributed storage server (DSS). The parameters such as ciphertext size, encryption time, and throughput have been considered for performance evaluation, whereas statistical analysis like similarity measurement, correlation coefficient, histogram, and entropy analysis uses to check image pixels deviation. The number of pixels change rate (NPCR) and unified averaged changed intensity (UACI) were used to check the strength of the proposed encryption technique. The proposed model is robust with high resilience against eavesdropping, insider attack, and chosen-plaintext attack.

• Journal of Korea Society of Industrial Information Systems
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• v.27 no.6
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• pp.59-68
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• 2022

We propose the vehicle maintenance support system to alarm consumable replacement reminders to the vehicle owner. Since the delayed replacement of the consumables makes the condition of the vehicle worse, it is crucial to replace consumables in a recommended period. The vehicle maintenance support system alarms the replacement time, which is set by the vehicle owner, based on the mileage of the installed vehicle. It integrates speed information acquired from the Controller Area Network interface for communication between Electronic Control Unit and instrument panel, exposed at the On Board Diagnostics-II port, to calculate the vehicle mileage. By this, there is no additional wiring required for the system. We verify the system has only 0.28% error by comparing the mileage on the system with the instrument cluster on the vehicle. It automatically enters low-power mode consuming 15mW, which is a negligible amount for the typical conditions of the car, to prevent the vehicle battery from discharging when the ignition is off.

• Journal of Korean Clinical Nursing Research
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• v.19 no.3
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• pp.443-454
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• 2013

Purpose: The purpose of this study was to evaluate the effects of periodic reminding interventions on medication adherence, self-efficacy, and pain intensity for home-based lung cancer patients. Methods: A quasi-experimental nonequivalent control group, pretest and posttest design was used. The intervention comprised of individual education by tailored image-combined medication instructions, daily reminding text message, and weekly telephone calls for four weeks. The subjects in this study consisted of 62 lung cancer patients (31 in the experimental group, and 31 in the control group). Mann-Whitney U-test was applied to analyze the data. Results: Experimental group who received periodic reminding intervention program better adhered to prescribed medication compared to the control group (z=-6.14, p<.001). Experimental group demonstrated higher level of self-efficacy compared to the control group (z=-6.74, p<.001). Experimental group experienced less intense average pain compared to the control group (z=-6.29, p<.001). Conclusion: The findings suggest that periodic reminding interventions can be applied as an effective nursing intervention to promote medication adherence and self-efficacy to improve and pain management for home-based lung cancer patients.

• Journal of Ginseng Culture
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• v.6
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• pp.105-115
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• 2024

Wild ginseng, grown in undisturbed forest environments, has been maintained for centuriesthrough human intervention and knowledge, leading to the development of current ginseng agriculture. The practice of ginseng farming has long been established in various regions of Korea. However, the ginseng farming specifically in Geumsan was recognized as a Globally Important Agricultural Heritage System (GIAHS) by the Food and Agriculture Organization of the United Nations (FAO) in 2018. This designation was granted after a thorough evaluation, which confirmed that Geumsan's ginseng farming met the necessary criteria, including historical importance, traditional knowledge system, agrobiodiversity, and agricultural landscape. Traditional ginseng farming in Geumsan practices the 'rotating agriculture system', a sustainable land use approach that has been developed over several cycles of long duration (10-15 years). It contains the knowledge to choose locations for cultivation that prioritize the direction of sunlight and wind circulation. Furthermore, it received significant recognition for its agricultural heritage value based on its maintenance of several traditional knowledge systems, including ancestral wisdom and knowledge regarding pre-planting field management techniques. As of December 2023, there are currently 86 locations in 26 nations that have been designated as GIAHS. Among these sites, Geumsan stands out as the first and only site in the world specifically recognized for the cultivation of ginseng crops. This historical record serves as a significant reminder of Korea's prominent position as a major producer of ginseng on a global level. This article first provides an overview of the concept of agricultural heritage, the designation criteria, and the status of the designation. It then identifies, among the GIAHS designation criteria, the agricultural heritage value of traditional ginseng farming in the Geumsan region from the perspective of local traditional knowledge systems.