• International journal of advanced smart convergence
• /
• v.10 no.4
• /
• pp.66-71
• /
• 2021

In this paper, we sought ways to accept and reject advertisements using the function of a smartphone gyro sensor to enable selective transmission and reception of YouTube advertisements by linking the gyro function of mobile phones. In the case of YouTube advertisements, the skip button is activated after the advertisement is played for a certain period of time (about 5 seconds) before and after the video is played. During the time the advertisement is maintained, it can be used to achieve various goals such as increased website traffic, brand awareness, and sales induction. Since this type of advertisement is not a setting in which the transition takes place immediately, it can be seen as the most suitable setting to strengthen brand awareness. However, due to the nature of the YouTube advertising system, it is often discarded through users' skipping behavior in the process of sharing and reproducing information. Therefore, in this paper, we implemented an optional advertisement transmission system that applies the principle of gyroscope to minimize wasted advertisements and selectively maintain desired advertisements in consideration of the transmission and reception aspects of advertisement broadcasts. It measures rotational repulsive force with directional stability and car wash characteristics, and uses algorithms to identify the slope and angular speed of mobile phones to ensure that advertisements are transmitted and received. Through this, it is expected that advertisement transmission can be performed on the side of an advertisement provider, and selective advertisement reception can be performed on the side of a user.

• Journal of the Korea Fashion and Costume Design Association
• /
• v.21 no.1
• /
• pp.17-33
• /
• 2019

The purpose of this study is to understand the present status of the international textile fashion conventions and the Korean textile fashion conventions in order to secure competitiveness in the textile fashion industry and to discover the satisfaction of the convention and to develop an improvement plan of the current textile and fashion conventions in Korea. For the method of study, five representative conventions of domestic and foreign textiles and fashion were selected and case analyses were conducted focusing on relevant reports. Also, the satisfaction and improvement of the conventions for companies, buyers and visitors attending the Preview in Seoul(PIS) convention were surveyed. The first result of the study was that international textile and fashion conventions have clarified their identity according to changes in the market environment and buyer's interest. For example, the professional exhibition changed the nature of the comprehensive convention or made it easier for many related businesses and buyers to attend the convention by sharing the same convention period and location with other conventions. In addition, the convention hall has been constructed to display promising items, such as eco-friendly materials and smart materials. Second, participating companies, buyers and visitors of the Preview in Seoul (PIS) convention were generally satisfied with the convention, but were aware of the need for change. In particular, the satisfaction level with the number and level of new buyers at home and abroad, the number of counseling sessions and the quality level were also found to be low.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.22 no.1
• /
• pp.641-649
• /
• 2021

This qualitative content analysis aims to explore the meaning of experiences for college students who have experienced community service activities. This study aimed to find the essence of college students' community service experiences and provide them with basic data to develop effective personality education methods and service programs. The participants of this study were six college students with community service experience. Data were collected through in-depth interviews from May to September 2019 and were analyzed using the qualitative content analysis method suggested by Graneheim & Lundman. The community service experiences of college students could be summarized by the core theme, "Becoming a social professional through growth and maturity", consisting of the following themes: together in a living experience, growth through sharing, achieving maturity toward professionalism, and experiencing one's limitations. Through this study, it was confirmed that the experience of college students' service activities would cultivate the human character and competency necessary to live with others, the community, and nature. The college student's service activities could be used as an important educational program in personality education.

• Journal of the Korean Society for Library and Information Science
• /
• v.55 no.2
• /
• pp.227-261
• /
• 2021

This study aims to analyze the current status of school library assessment and generate discussion points for the development directions of the assessment. Surveys, consulting, and evaluations related to school libraries conducted by the Office of Education, the Ministry of Education, the Ministry of Culture, Sports and Tourism were analyzed using meta-evaluations and in-depth interviews with the school librarians. The analysis revealed problems such as duplication of evaluation by various institutions, no reflection of the national school library development plan, low participation rate due to voluntary nature of the assessment, and lack of the educational evaluation index. The solution to the problem was a school libraries' operation evaluation improvement plan. The plan included the legal evaluation agent specification, the national school library development plan incorporation, inter-agency evaluation network & the case sharing system establishment, and the Office of Education's investigation and consulting cooperation.

• Maritime Security
• /
• v.1 no.1
• /
• pp.119-148
• /
• 2020

The purpose of this study is to examine the perceptions of neighboring countries on the gray zone and to explore Korea's maritime strategy. The concept of gray zones appears in various ways from country to country. In international relations, the gray zone is a comprehensive space between war and peace. The gray zone in the ocean is an unstable space in which competition between the US and China is represented and proxy wars are possible, and the gray zone needs strategic management. This study summarizes the concept of gray zones in the maritime security field, examines the gray zone strategies of neighboring countries, and suggests Korea's gray zone strategies. In particular, the recognition of the gray zone itself is the core of the problem, and it is necessary to strengthen information sharing to clarify the problem about the gray zone and accurately recognize the gray zone situation. The CMG(Complex Maritime Geostrategy) framework attempted in this study is expected to be helpful in understanding the nature of various gray zone issues around Korea and preparing for a geostrategy based on the analysis.

• Journal of Internet of Things and Convergence
• /
• v.7 no.1
• /
• pp.1-7
• /
• 2021

The IoT market continues to expand and grow, but the security threat to IoT devices is also increasing. However, it is difficult to apply the security technology applied to the existing system to IoT devices that have a problem of resource limitation. Therefore, in this paper, we present a service that can improve the security of IoT devices by presenting authentication and lightweight cryptographic algorithms that can reduce the overhead of applying security features, taking into account the nature of resource limitations of IoT devices. We want to apply these service to home network IoT equipment to provide security. The authentication and lightweight cryptographic algorithm application protocols presented in this paper have secured the safety of the service through the use of LEA encryption algorithms and secret key generation by users, IoT devices and server in the IoT environment. Although there is no difference in speed from randomly generating secret keys in experiments, we verify that the problem of resource limitation of IoT devices can be solved by additionally not applying logic for secret key sharing to IoT devices.

• Journal of Music and Human Behavior
• /
• v.17 no.2
• /
• pp.101-117
• /
• 2020

This study aimed to investigate music and imagery (MI) experiences in group settings using a qualitative case study approach. For this purpose, a focus group interview was conducted with four professional music therapists, who participated in peer MI group sessions without a therapist. Data collected from the interview were analyzed by qualitative data analysis procedures. Results demonstrated that successful group music experiences in the early stages, such as sharing and selecting music together within the group or experiencing group support, leaded to developing trust towards music and the group in participants. Moreover, the trust built upon such basis was shown to facilitate expansions in emotional experiences, imageries, relational aspects, and music resources, which led to new personal insights. In addition, the participants recognized the supportive nature of the group played a role of encouraging participants to challenge new experiences during MI experiences. The results suggest that group as a therapeutic factor can promote expansive emotional experiences and insights. Furthermore, the findings may provide implications for music psychotherapy applications in group settings.

• Journal of Korean Society of Archives and Records Management
• /
• v.21 no.1
• /
• pp.117-139
• /
• 2021

"Detailed Nondisclosure Standards" of an institution include subject information and rationale that should not be disclosed by the institution. According to the Information Disclosure Act, such standards must be established in consideration of the nature of work, and continuous implementation is required. However, studies that reviewed the purpose and role of "Detailed Nondisclosure Standards" or the status of public institutions' development and operation of such standards were insufficient despite such standards being an indispensable tool in practice and a major device to protect the people's right to know. Therefore, this study introduces the strategies of the public institution and the research team to develop detailed standards for nondisclosure through the case of institution A. This will be of practical help to public institutions that intend to develop detailed nondisclosure standards in the future based on communication between institution A and the research team and sharing details during the project process.

• International Journal of Computer Science & Network Security
• /
• v.21 no.12
• /
• pp.309-315
• /
• 2021

The purpose of the article is to analyze the functioning of economic systems in the context of the development of their potential in a circular economy. It is determined that the functioning of economic systems to ensure their sustainability should meet modern challenges and provide for the formation of competitive institutional architecture, the introduction of structural and regulatory innovations, the transition to an innovative model of development. The specific principles of functioning of economic systems include openness, nonlinearity, multivectority, dynamism, emergence, uncertainty about the development of economic processes. It is substantiated that the linear nature of development and equilibrium are not dominant in the functioning of economic systems, and increasing the level of economic efficiency should go hand in hand with minimizing the activities of enterprises, which necessitates the use of circular economy. The main prerequisites for the transition to a circular economy are analyzed. It is determined that the basic concept of the circular economy involves the development of a system of production and consumption, which is based on processing, reuse, repair, product sharing, change of consumption patterns and new business models and systems. The main elements of the circular economy include: a closed cycle, the use of renewable energy sources, systems thinking. The correlation of the principles of sustainable development and the peculiarities of the application of the circular economy is analyzed. It is determined that the circular economy contrasts with the traditional linear economic model, which is based on the model of "take-do-consume-throw away". The advantages and disadvantages due to the use of the principles of circular economy are given. Based on the study, steps are identified to accelerate the transition from a linear economy to a circular economy.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• v.17 no.2
• /
• pp.312-334
• /
• 2023

In large-scale computing, cloud computing plays an important role by sharing globally-distributed resources. The evolution of cloud has taken place in the development of data centers and numerous servers across the globe. But the cloud information centers incur huge operational costs, consume high electricity and emit tons of dioxides. It is possible for the cloud suppliers to leverage their resources and decrease the consumption of energy through various methods such as dynamic consolidation of Virtual Machines (VMs), by keeping idle nodes in sleep mode and mistreatment of live migration. But the performance may get affected in case of harsh consolidation of VMs. So, it is a desired trait to have associate degree energy-performance exchange without compromising the quality of service while at the same time reducing the power consumption. This research article details a number of novel algorithms that dynamically consolidate the VMs in cloud information centers. The primary objective of the study is to leverage the computing resources to its best and reduce the energy consumption way behind the Service Level Agreement (SLA)drawbacks relevant to CPU load, RAM capacity and information measure. The proposed VM consolidation Algorithm (PVMCA) is contained of four algorithms: over loaded host detection algorithm, VM selection algorithm, VM placement algorithm, and under loading host detection algorithm. PVMCA is dynamic because it uses dynamic thresholds instead of static thresholds values, which makes it suggestion for real, unpredictable workloads common in cloud data centers. Also, the Algorithms are adaptive because it inevitably adjusts its behavior based on the studies of historical data of host resource utilization for any application with diverse workload patterns. Finally, the proposed algorithm is online because the algorithms are achieved run time and make an action in response to each request. The proposed algorithms' efficiency was validated through different simulations of extensive nature. The output analysis depicts the projected algorithms scaled back the energy consumption up to some considerable level besides ensuring proper SLA. On the basis of the project algorithms, the energy consumption got reduced by 22% while there was an improvement observed in SLA up to 80% compared to other benchmark algorithms.