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pISSN : 1598-849X / eISSN : 2383-9945

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2019, Vol.24, No.11

  • 1.

    Small Active Command Design for High Density DRAMs

    LEE KWANG HO | JONGMIN LEE | 2019, 24(11) | pp.1~9 | number of Cited : 0
    Abstract PDF
    In this paper, we propose a Small Active Command scheme which reduces the power consumption of the command bus to DRAM. To do this, we target the ACTIVE command, which consists of multiple packets, containing the row address that occupies the largest size among the addresses delivered to the DRAM. The proposed scheme identifies frequently referenced row addresses as Hot pages first, and delivers index numbers of small caches (tables) located in the memory controller and DRAM. I-ACTIVE and I-PRECHARGE commands using unused bits of existing DRAM commands are added for index number transfer and cache synchronization management. Experimental results show that the proposed method reduces the command bus power consumption by 20% and 8.1% on average in the close-page and open-page policies, respectively.
  • 2.

    Cooperative Video Streaming and Active Node Buffer Management Technique in Hybrid CDN/P2P Architecture

    Junpyo Lee | 2019, 24(11) | pp.11~19 | number of Cited : 1
    Abstract PDF
    Recently, hybrid CDN/P2P video streaming architecture is specially designed and deployed to achieve the scalability of P2P networks and the desired low delay and high throughput of CDNs. In this paper, we propose a cooperative video streaming and active node buffer management technique in hybrid CDN/P2P architecture. The key idea of this streaming strategy is to minimize network latency such as jitter and packet loss and to maximize the QoS(quality of service) by effectively and efficiently utilizing the information sharing of file location in CDN’s proxy server which is an end node located close to a user and P2P network. Through simulation, we show that the proposed cooperative video streaming and active node buffer management technique based on CDN and P2P network improves the performance of realtime video streaming compared to previous methods.
  • 3.

    EXCUTE REAL-TIME PROCESSING IN RTOS ON 8BIT MCU WITH TEMP AND HUMIDITY SENSOR

    Ki-Su Kim | Jongchan Lee | 2019, 24(11) | pp.21~27 | number of Cited : 0
    Abstract PDF
    Recently, embedded systems have been introduced in various fields such as smart factories, industrial drones, and medical robots. Since sensor data collection and IoT functions for machine learning and big data processing are essential in embedded systems, it is essential to port the operating system that is suitable for the function requirements. However, in embedded systems, it is necessary to separate the hard real-time system, which must process within a fixed time according to service characteristics, and the flexible real-time system, which is more flexible in processing time. It is difficult to port the operating system to a low-performance embedded device such as 8BIT MCU to perform simultaneous real-time. When porting a real-time OS (RTOS) to a low-specification MCU and performing a number of tasks, the performance of the real-time and general processing greatly deteriorates, causing a problem of re-designing the hardware and software if a hard real-time system is required for an operating system ported to a low-performance MCU such as an 8BIT MCU. Research on the technology that can process real-time processing system requirements on RTOS (ported in low-performance MCU) is needed.
  • 4.

    Vision-based Real-time Lane Detection and Tracking for Mobile Robots in a Constrained Track Environment

    Kim, Young-Ju | 2019, 24(11) | pp.29~39 | number of Cited : 1
    Abstract PDF
    As mobile robot applications increase in real life, the need of low cost autonomous driving are gradually increasing. We propose a novel vision-based real-time lane detection and tracking system that supports autonomous driving of mobile robots in constrained tracks which are designed considering indoor driving conditions of mobile robots. Considering the processing of lanes with various shapes and the pre-adjustment of operation parameters, the system structure with multi-operation modes are designed. In parameter tuning mode, thresholds of the color filter is dynamically adjusted based on the geometric property of the lane thickness. And in the unstable input mode of curved tracks and the stable input mode of straight tracks, lane feature pixels are adaptively extracted based on the geometric and temporal characteristics of the lanes and the lane model is fitted using the least-squared method. The track centerline is calculated using lane models and the motion model is simplified and tracked by a linear Kalman filter. In the driving experiments, it was confirmed that even in low-performance robot configurations, real-time processing produces the accurate autonomous driving in the constrained track.
  • 5.

    The Unsupervised Learning-based Language Modeling of Word Comprehension in Korean

    Kim, Euhee | 2019, 24(11) | pp.41~49 | number of Cited : 3
    Abstract PDF
    We are to build an unsupervised machine learning-based language model which can estimate the amount of information that are in need to process words consisting of subword-level morphemes and syllables. We are then to investigate whether the reading times of words reflecting their morphemic and syllabic structures are predicted by an information-theoretic measure such as surprisal. Specifically, the proposed Morfessor-based unsupervised machine learning model is first to be trained on the large dataset of sentences on Sejong Corpus and is then to be applied to estimate the information-theoretic measure on each word in the test data of Korean words. The reading times of the words in the test data are to be recruited from Korean Lexicon Project (KLP) Database. A comparison between the information-theoretic measures of the words in point and the corresponding reading times by using a linear mixed effect model reveals a reliable correlation between surprisal and reading time. We conclude that surprisal is positively related to the processing effort (i.e. reading time), confirming the surprisal hypothesis.
  • 6.

    Web access prediction based on parallel deep learning

    Togtokh Gantur | KIM KYUNG CHANG | 2019, 24(11) | pp.51~59 | number of Cited : 0
    Abstract PDF
    Due to the exponential growth of access information on the web, the need for predicting web users’ next access has increased. Various models such as markov models, deep neural networks, support vector machines, and fuzzy inference models were proposed to handle web access prediction. For deep learning based on neural network models, training time on large-scale web usage data is very huge. To address this problem, deep neural network models are trained on cluster of computers in parallel. In this paper, we investigated impact of several important spark parameters related to data partitions, shuffling, compression, and locality (basic spark parameters) for training Multi-Layer Perceptron model on Spark standalone cluster. Then based on the investigation, we tuned basic spark parameters for training Multi-Layer Perceptron model and used it for tuning Spark when training Multi-Layer Perceptron model for web access prediction. Through experiments, we showed the accuracy of web access prediction based on our proposed web access prediction model. In addition, we also showed performance improvement in training time based on our spark basic parameters tuning for training Multi-Layer Perceptron model over default spark parameters configuration.
  • 7.

    Multisensory based AR System for Education of Cultural Heritage

    Eunsol Jeong | Jeong-eun Oh | Haeyeon Won and 1other persons | 2019, 24(11) | pp.61~69 | number of Cited : 0
    Abstract PDF
    In this paper, we propose a multisensory(i.e., visual-auditory-tactile) based AR system for the education of cultural heritage. The proposed system provides a multisensory interaction by designing a user to experience with a 3D printed artifact which is mapped by a virtual 3D content of digital heritage. Compared with the existing systems of cultural heritage education based on augmented reality(AR) technology, this system focused on not only providing learning experience via a sense of visual and auditory, but also a sense of tactile. Furthermore, since this systems mainly provided the direct interactions using a 3D printed model, it gives a higher degree of realism than existing system that use touch or click motions on a 2D display of mobile phones and tablets. According to a result of user testing, we concluded that the proposed system delivered the excellent presence and learning flow to users. Particularly, from the usability evaluation, a 3D printed target artifact which is similar in shape to original heritage artifact, achieved the highest scores among the various tested targets.
  • 8.

    A study of Polarization Modulator to Single-cell type in Polarized Glasses 3D Display System Using Binocular Parallax

    Kyung-Bae Kong | KWON JUNG JANG | 2019, 24(11) | pp.71~78 | number of Cited : 0
    Abstract PDF
    Most 3D displays that are currently in the market adopt the binocular disparity method creating a different image for the left and right eye for a 3 dimensional effect. However, commercialized 3D image output devices lack in performance making it uncomfortable for the viewer and restrict the viewer to certain positions. In this paper, we propose a single-cell polarized lens type stereoscopic system which has a smaller viewing angle and reduced crosstalk, with improved light penetration compared to existing double-cell structures; and analyzed the single-cell polarized lens type stereoscopic system properties, and conducted an effect analysis of performance improvement compared to the dual-cell type. Results showed that the single-cell type had a 25% improved performance, and the 3D crosstalk index which is an important index for quality characteristics of stereoscopic systems, increased over about 37%, compared to the dual-cell type.
  • 9.

    Analysis of SCI Journals Cited by Korean Journals in the Computer field

    Kim, Byung-Kyu | YOU, BEOMJONG | Kang, Ji-Hoon | 2019, 24(11) | pp.79~86 | number of Cited : 0
    Abstract PDF
    It is very important to analyze and provide information resources for research output produced in the computer field, the core science of the 4th Industrial Revolution. In this paper, SCI journals cited from domestic journals in the computer field were identified and the citation rankings and their co-citation networks were generated, analyzed, mapped and visualized. For this, the bibliographic and citation index information from 2015 to 2017 in the KSCD were used as the basis data, and the co-citation method and network centrality analysis were used. As a result of this study, the number of citations and the citation ranks of SCI journals and papers cited by korean journals in the computer field were analyzed, and peak time(2 years), half-life(6.6 years), and immediacy citation rate(2.4%) were measured by citation age analysis. As a result of network centrality analysis, Three network centralities(degree, betweenness, closeness) of the cited SCI journals were calculated, and the ranking of journals by each network centrality was measured, and the relationship between the subject classifications of the cited SCI journals was visualized through the mapping of the network.
  • 10.

    The Effect of Organizational Justice on Information Security-Related Role Stress and Negative Behaviors

    Hwang Inho | AHN Sang Joon | 2019, 24(11) | pp.87~98 | number of Cited : 1
    Abstract PDF
    In recent years, many organizations protect their information resources by investing in information security technology. However, information security threats from insiders have not been reduced. This study proposes a method for reducing information security threats within an organization by mitigating negative information security behaviors of employees. Specifically, the study finds a relationship between information security related role stress and negative behavior and suggests whether organizational justice mitigates role stress. That is, the purpose of the study is to suggest a mechanism between organizational justice, information security related role stress, and negative behavior. Negative behavior consist of avoidance behavior and deviant behavior, and security related role stress consist of role conflict and role ambiguity. Organizational justice consist of distributional justice, procedural justice, and informational justice. The research model is verified through structural equation modeling. After establishing a research model and hypothesis, we develop a survey questionnaire and collect data from 383 employees whose organizations have already implemented security policies. The findings appear that security related role stress increases negative behavior and that organizational justice mitigates role stress. The results of the analysis suggest the direction of organizational strategy for minimizing insider's security-related negative behaviors.
  • 11.

    The Integrated Cyber SRM(Security Risk Monitoring) System Based on the Patterns of Cyber Security Charts

    LEE GANG SOO | Hyun Mi Jung | 2019, 24(11) | pp.99~107 | number of Cited : 0
    Abstract PDF
    The "Risk management" and "Security monitoring" activities for cyber security are deeply correlated in that they prepare for future security threats and minimize security incidents. In addition, it is effective to apply a pattern model that visually demonstrates to an administrator the threat to that information asset in both the risk management and the security system areas. Validated pattern models have long-standing "control chart" models in the traditional quality control sector, but lack the use of information systems in cyber risk management and security systems. In this paper, a cyber Security Risk Monitoring (SRM) system that integrates risk management and a security system was designed. The SRM presents a strategy for applying 'security control' using the pattern of 'control charts'. The security measures were integrated with the existing set of standardized security measures, ISMS, NIST SP 800-53 and CC. Using this information, we analyzed the warning trends of the cyber crisis in Korea for four years from 2014 to 2018 and this enables us to establish more flexible security measures in the future.
  • 12.

    A Study on an Efficient and Robust Differential Privacy Scheme Using a Tag Field in Medical Environment

    Kim Soon Seok | 2019, 24(11) | pp.109~117 | number of Cited : 0
    Abstract PDF
    Recently, the invasion of privacy in medical information has been issued following the interest in the secondary use of mass medical information. The mass medical information is very useful information that can be used in various fields such as disease research and prevention. However, due to privacy laws such as the Privacy Act and Medical Law, this information, including patients' or health professionals' personal information, is difficult to utilize as a secondary use of mass information. To do these problem, various methods such as k-anonymity, l-diversity and differential-privacy that can be utilized while protecting privacy have been developed and utilized in this field. In this paper, we discuss the differential privacy processing of the various methods that have been studied so far, and discuss the problems of differential privacy using Laplace noise and the previously proposed differential privacy. Finally, we propose a new scheme to solve the existing problem by adding a 1-bit status field to the last column of a given data set to confirm the response to queries from analysts.
  • 13.

    Partial Inverse Traveling Salesman Problems on the Line

    Chung Yerim | Myoungju Park | 2019, 24(11) | pp.119~126 | number of Cited : 1
    Abstract PDF
    The partial inverse optimization problem is an interesting variant of the inverse optimization problem in which the given instance of an optimization problem need to be modified so that a prescribed partial solution can constitute a part of an optimal solution in the modified instance. In this paper, we consider the traveling salesman problem defined on the line (TSP on the line) which has many applications such as item delivery systems, the collection of objects from storage shelves, and so on. It is worth studying the partial inverse TSP on the line, defined as follows. We are given n requests on the line, and a sequence of k requests that need to be served consecutively. Each request has a specific position on the real line and should be served by the server traveling on the line. The task is to modify as little as possible the position vector associated with n requests so that the prescribed sequence can constitute a part of the optimal solution (minimum Hamiltonian cycle) of TSP on the line. In this paper, we show that the partial inverse TSP on the line and its variant can be solved in polynomial time when the sever is equiped with a specific internal algorithm Forward Trip or with a general optimal algorithm.
  • 14.

    Relational Database SQL Test Auto-scoring System

    Hur,Ta-Sung | 2019, 24(11) | pp.127~133 | number of Cited : 0
    Abstract PDF
    SQL is the most common language in data processing. Therefore, most of the colleges offer SQL in their curriculum. In this research, an auto scoring SQL test is proposed for the efficient results of SQL education. The system was treated with algorithms instead of using expensive DBMS(Data Base Management System) for automatic scoring, and satisfactory results were produced. For this system, the test question bank was established out of ‘personnel management’ and ‘academic management’. It provides users with different sets of test each time. Scoring was done by dividing tables into two sections. The one that does not change the table(select) and the other that actually changes the table(update, insert, delete). In the case of a search, the answer and response were executed at first and then the results were compared and processed, the user’s answers are evaluated by comparing the table with the correct answer. Modification, insertion, and deletion of table actually changes the data table, so data was restored by using ROLLBACK command. This system was implemented and tested 772 times on the 88 students in Computer Information Division of our college. The results of the implementation show that the average scoring time for a test consisting of 10 questions is 0.052 seconds, and the performance of this system is distinguished considering that multiple responses cannot be processed at the same time by a human grader, we want to develop a problem system that takes into account the difficulty of the problem into account near future.
  • 15.

    Indoor positioning system for naval ship personnel using beacon

    Jong-Hwa Kim | Joo-Yong Kim | 2019, 24(11) | pp.135~142 | number of Cited : 1
    Abstract PDF
    In this paper, we propose a system that can identify the position of naval ship personnel at a glance by utilizing the Bluetooth-based beacons. The system proposed in this paper, installs a beacon receiver which are short-range wireless communication devices for each cabin, and in the installed beacon receiver receives information from beacons held by personnel. The received information is transmitted to the processing server, and the processing server transmits the integrated information of the cabin to the display module. Display module displays personnel information located in each cabin. As a result of simulations using the designed system, it was confirmed that the integrated information is transferred to the display module and displayed. Unlike existing situations where personnel positions are reported orally within the ship, the system can quickly and in real time determine the position of personnel, allowing for the management of personnel in non-combat situations and the rapid battle disposition in combat situations. This is expected to contribute greatly to the improvement of fighting power.
  • 16.

    A Descriptive Study on the Job Information Service Market

    Jongwook Yoon | 2019, 24(11) | pp.143~152 | number of Cited : 0
    Abstract PDF
    In this study, the author seeks to identify the status of the online job information service market and present strategic guidelines to maintain the market ecosystem based on it. The research method was carried out as a descriptive study to identify the online job information service market by utilizing various secondary data. Specifically, the market analysis identified the high potential growth rate of the job information service market and key issues. Industry trend analysis analyzed key service features, job seeker types and features, service use trends, promotion and marketing methods. Finally, through SWOT analysis of the market, strategic guidelines were proposed to lead the market ecosystem into a virtuous circle. In the first place, these findings will help us gain a comprehensive view of the market by identifying the status of the job information service market with a focus on the main issues. It may also provide companies in the industry with the necessary clues to their continued survival within the industry. Furthermore, the government and public organizations are expected to contribute to boosting the job information service market with the aim of creating and improving jobs.
  • 17.

    A Method of White Noise Reduction for Recognizing Cattle's Gulp Downing Sounds

    Ho Young Kwak | Woo-Chan Kim | Jin-Wook Chang | 2019, 24(11) | pp.153~161 | number of Cited : 0
    Abstract PDF
    In this paper, we proposed a method to measure the feed intake of cattle using the cattle's gulp downing sounds. To measure the sound of cattle's gulp downing, the recording is performed through a wearable device attached to the cattle's neck. A lot of noises are recorded according to the ranching environment. This paper proposed a method for spectralizing raw gulping sound data containing white noise and removing white noise through the signal transformation using a filter. This allows the feed intake to be measured. Through the proposed white noise reduction method, it was possible to extract only the cattle's gulp downing sound, and through this, the number of cattle's gulp downing could be measured. The proposed method in this paper makes it possible to measure cattle's feed intake easily, so that estrus prediction, health care for cattle, and feed management can be done efficiently.
  • 18.

    The Effect of Leader's Coaching and LMX on Innovative Behavior of Automotive VR Technology Researcher: Focusing on Mediated Effect of Resilience

    Hao Dai | Tae-Hyun Kim | Xiao Jing Yang | 2019, 24(11) | pp.163~170 | number of Cited : 1
    Abstract PDF
    In this study, we tried to demonstrate the influence of leader's coaching and LMX on the member's innovation vibrator and to provide implications. This study reviewed the reader's coaching, LMX, the theories of the member's innovation behabior, resiliency, and the studies and discussions that have been carried out in the past, and finally produced five hypotheses. To verify this research theory, this study collected data from 320 automotive company researchers using VR interaction technology. The collected data were used for frequency analysis, reliability analysis, exploratory factor analysis, confirmatory factor analysis, structural equation analysis. An Empirical Analysis are confirming a result of this study can be summarized as follows. First, leader's coaching have a positive effect on resilience. Second, is have a positive effect on resilience lmx. Third, the researchers is high resilience innovative behavior to promote positive influence. Fourth, resilience leader's coaching the innovative behavior the impact on. Fifth, are lmx resilience innovative behavior the impact on. Through the conclusion and discussion section, the theoretical practical significance of this study and the limitations of the research and the direction of future research are presented.
  • 19.

    A Study on the Perception Level and Proper Management of Indoor Air Quality Recognition in Elderly Care Hospital Workers

    Choi Mi Suk | 2019, 24(11) | pp.171~178 | number of Cited : 1
    Abstract PDF
    In this paper, we proposed a plan for a indoor air quality management in elderly care hospital by measuring the indoor air quality level of elderly care hospital and conducting a survey the workers' awareness of indoor air quality. The measurement items were Temperature, Humidity, CO2, CO, PM10, VOC and were taken on April 26, 2019. The survey found that the lower the satisfaction level with indoor air quality, the better outdoor air quality and odor items were analyzed to be the lowest among the indoor environmental factors. When the satisfaction level of indoor air quality is high, the satisfaction level of indoor environment factor is high. The result of the multiple response analysis was “lack of ventilation” and the regression analysis was the lower the "relevance of indoor air quality" category. To provide the best indoor air quality environment for elderly care hospital workers the installation of additional ventilation equipment to remove odors, the increase in the number of natural ventilation and the designation of regular ventilation personnel will be necessary. By establishing such a plan, it is possible to provide indoor air quality environment to provide the best services for elderly care hospital workers.
  • 20.

    Effects of Mirror-based Visual Effects on Chest Compression Quality in Cardiopulmonary Resuscitation

    Seong-Woo Yun | 2019, 24(11) | pp.179~185 | number of Cited : 0
    Abstract PDF
    In this paper, We purpose the basic data for the success of effective CPR using mirror in order to increase the quality of chest compression during CPR. The subject of this study was an experimental study based on a randomized crossover design of 28 people who completed the BLS Health Care Provider, and collected data were analyzed by SPSS Ver. 23.0 for Win statistics program. As the research methods, depth, speed, compression to relaxation ratio, arm angle and easiness during the chest compression were measured. Taken together, the results of this study showed that using a mirror-based chest compression method for chest compressions in adult CPR could make chest compressions easier, in addition, the quality of breast compression was improved by improving the posture of the rescuers, such as the average depth of compression, compression to relaxation ratio, and arm angle. However, it is necessary to confirm the feasibility of clinical application through additional studies on various environmental factors and job groups for mirror-based chest compression method.
  • 21.

    A Study of the Impact of Knowledge Sharing and Utilization on the Characteristics and Joint Performance of the Participants in an International Joint Ventures

    lee won hee | Jae-Young Moon | 2019, 24(11) | pp.187~193 | number of Cited : 0
    Abstract PDF
    The study is to investigate the impact of the knowledge sharing and utilization among the participants in international joint ventures on the characteristics and the joint venment performance of the participants. The specific areas of the investigation for significant impacts of knowledge sharing & utilization by international joint ventures are contract compliance, motivation & willingness for business participation, management autonomy, organizational culture and the joint performances, and the characteristics that are unique to the participants in international joint ventures are empirically investigated as well. The findings of the empirical analysis are as follows: knowledge sharing & utilization has positive impacts on the areas of contract compliance, management autonomy, motivation & willingness for business participation and organizational culture, and, in return, the areas of contract compliance, managerial autonomy, and motivation & willingness for business participation appeared to have positive effects on their joint venture performances.
  • 22.

    Analizing Korean media reports on security guard : focusing on visual analysis

    Park-Suhyeon | MinChul Shin | Cho Cheol Kyu | 2019, 24(11) | pp.195~200 | number of Cited : 2
    Abstract PDF
    The purpose of this paper is to explore security guard's status and roles in society through media reports. Research method is to anlyze security Guard's 'Keyword Trend' and 'Keyword Frequency Analysis' by 'Big Kind' which enables 'News Big Data' analysis. The result came out by the analysis in sectional private security guard's history of settling down, growing up (quantity), and growing up (quality) by separating generations is that there are lots of attention and exposure from media about crime, security guard job, minimum wage, and 'Gabjil', but the images of security guard are recognized as victim of crime and 'Gabjil', and working in poor environment with minimum waged and ambiguous job, instead of people preventing crimes. In the future, stabilizing security guard's social status and work responsibility, and developing job professionalism are necessary to improve the images of security guard.
  • 23.

    The Effectiveness of Information Protection and Improvement Plan Based on SMEs Consulting Case

    Jae Nam Kim | 2019, 24(11) | pp.201~208 | number of Cited : 0
    Abstract PDF
    In the phono-sapiens era of the intelligence information society, most business activities are increasingly dependent on networks and information systems. SMEs, which occupy the majority of Korean companies, are increasingly possessing the value and technology of their information assets, and their ability to protect core technologies that are the driving force of corporate growth will be the most important competitiveness of enterprises. Accordingly, the Ministry of Science and ICT and the Korea Internet & Security Agency(KISA) provides a foundation for minimizing the damage from cyber threats such as hacking and information leakage by evaluating the current information protection level of SMEs and enhancing information protection capability by supporting a high level of customized information protection consulting. In this study, we analyze the effectiveness of information protection based on the results of KISA SMEs consulting. In addition, by identifying problems and limitations derived from SMEs information protection consulting results, SMEs should propose measures to improve information security of SMEs that can manage information protection management system more efficiently and effectively.
  • 24.

    A Longitudinal Study on the Parenting Effectiveness of Multicultural Families and Self‐esteem and Achievement Motivation of Multicultural Adolescents: Verification of Autoregressive Cross‐lagged Model

    Lee Hyoung Ha | 2019, 24(11) | pp.209~218 | number of Cited : 2
    Abstract PDF
    The purpose of this study is to longitudinally analyze the relationship between parenting effectiveness of parents of multicultural families and self‐esteem and achievement motivation of multicultural adolescents. The study used the data of Multi‐cultural Adolescent Panel Survey (MAPS). Of the six years of data from the 1st survey (elementary grade 4 students) in 2011 to the 6th survey (3rd year middle school students) in 2016, this study employed and analyzed the data from year 2012 (2nd survey, fifth graders), year 2014 (4th survey, 1st year middle school students), and year 2016 (6th survey, 3rd year middle school students). The results of applying the Autoregressive Cross‐lagged Model to examine the longitudinal relationship between parenting effectiveness of multicultural families and self ‐esteem and achievement motivation of multicultural adolescents are as follows. First, parenting effectiveness of parents of multicultural families, and self‐esteem of multicultural adolescents, and autoregressive effects of achievement motivation were found to have a positive (+) effect with the passage of time. Second, the parenting effectiveness of parents of multicultural families at the previous time was found to have a significant positive (+) effect on the cross‐lagged effect on self‐esteem and achievement motivation of multicultural adolescents at a later time. Third, the self‐esteem of multicultural adolescents at the previous time at the previous time was found to have a significant effect in the positive (+) direction on the cross‐lagged effect affecting achievement motivation of multicultural adolescents at a later time. Fourth, it was found that the cross‐lagged effect of the parenting effectiveness of parents of multicultural families on achievement motivation of multicultural adolescents was greater than the cross‐lagged effect of self‐esteem on achievement motivation of multicultural adolescents. This study is meaningful in that the longitudinal data are used to verify the causal orientation between three variables over time to examine the relationship between parenting effectiveness of parents of multicultural families and self‐esteem and achievement motivation of multicultural adolescents.
  • 25.

    Prioritizing Maintenance of Naval Command and Control System Using Feature Selection

    Junhyeong Choi | Dongsu Kang | 2019, 24(11) | pp.219~228 | number of Cited : 0
    Abstract PDF
    Naval command and control system are very important for operation and their failures can be fatal for warfare. To prepare for these failures, we use feature selection method which is one of the data mining techniques. First, we analyzes failure data set of Navy from 2016 to 2018. And then We derive attributes that are associated with failure and to predict failure using feature selection method. We propose a method for prioritizing maintenance using the degree of association of attributes. This improves the efficiency and economics of command and control system maintenanc
  • 26.

    Effect of Family-Friendly Corporate culture on Organizational Commitment and Job Performance-Focus on ICT companies in Korea

    lee won hee | Dal-Nim Yang | 2019, 24(11) | pp.229~234 | number of Cited : 0
    Abstract PDF
    This study is an empirical study to examine how the family-friendly corporate culture affects organizational commitment and job performance for ICT companies in Korea. Therefore, the purpose of the study is to investigate the effects of family-friendly culture of ICT companies on the organizational commitment and job performance of their employees. To this end, the impacts of internal factors of family-friendly corporate culture on their organizational commitment and job performance of the employees of ICT companies in South Korean are empirically analyzed. And the findings of the empirical investigation are as follows: Family-friendly Organizational culture and Family-Friendly Welfare System have positive effects on the organizational commitment, and Organizational commitment, in return, has positive effects on the job performance. But the Family-friendly working environment is found to have NO significant effects on the Organizational commitment. These results confirm the characteristics of workers who prefer family-friendly welfare systems with economic rewards rather than formal family-friendly programs.
  • 27.

    Fourth industrial revolution of Women's University Students and change of intelligent information technology

    Hwang Eui Chul | 2019, 24(11) | pp.235~243 | number of Cited : 1
    Abstract PDF
    Universities are opening related majors and subjects to nurture the problem-solving fusion that businesses want. The time has come when rapid technological. On this thesis, we analyzed three years (2017-2019) of survey result of Women University students in order to figuring out and dealing with the change in 4th industrial revolution and intellectual information technology. It turns out that 1) there was an increase of interest in 4th industrial revolution from 59% in 2017 to 80% in 2019, 2) IoT, ICT, Artificial Intelligence, and Education Research System became top priority in technical strategy, 3)the prime keyword is AI, robot, job, 4)the expectation on increasing of the opportunity and the number of jobs in science technology field was 50%, 5)the importance of universities and companies was 50%, 80% each, 6) the information needed for science technology were educational discipline, change in future science, prospective future information in order, and 7)the most needed education were education on creativity, coding, cross-subject, engineering in order. In the era of the fourth industrial revolution, it is essential to expand the SW manpower base in various fields. University education, which should provide connectivity for super-fusion, should provide curriculum optimized for industrial demands such as, fusion and connected education, creative thinking, self-directed problem solving and etc.
  • 28.

    A Study on the Effect of Professionality of Franchise Education Program on the Satisfaction, Work Efficiency and Business Performance

    Ji-Hyun Song | Jo Gye Beom | 2019, 24(11) | pp.245~254 | number of Cited : 0
    Abstract PDF
    In this paper, We analyze the effect of professionality of franchise education program on the satisfaction, work efficiency and business performance, to find how to develop education program which is considered as important in franchise management and to propose ways of sustainable operation of franchise education program. In this study, we carried out survey for 224 users who have competed franchise education programs. We divided the professionality of franchise education program into education instructors, education contents, education environment and education methods through precedent study. For the verification of study hypothesis, we used single regression and multiple regression analysis to verify the relationship between variables. The core study results are as follows. First, professionality of franchise education program is positively related to the satisfaction. Second, professionality of franchise education is positively related to work efficiency. Third, satisfaction affects work efficiency. Fourth, satisfaction and work efficiency have positive effect on business performance. Based on these study results, we found that if education program suitable for the industry and subjects from instructors to education method is developed to improve the professionality of franchise program and continuous communication and improvement is made to increase satisfaction and work efficiency, the franchise education program will create good results.
  • 29.

    The Effects of Mobile phone Dependence and Fandom Activities on the Satisfaction of life of Adolescents : Mediating Effect of Self-Resilience

    Bang Sung A | 2019, 24(11) | pp.255~262 | number of Cited : 1
    Abstract PDF
    The purpose of this study to the factors affecting the satisfaction of adolescent life. This study analyzed data from the panel data of the Korean Children and Youth Panel Survey (KCYS). Based on this, it aims to propose practical and policy measures for the correct use of mobile phones and fandom activities to increase the satisfaction of young people's lives. The AMOS 24.0 was used as an analytical method of this study. First, the higher the life satisfaction of adolescents, the lower the dependence on mobile phones. Second, the mobile phone dependence of adolescents has a significant effect on life satisfaction by Self-resilience. In conclusion, it is suggested that customized programs suitable for social emotional development and rapidly changing cultural activities should be developed and distributed in order to improve the life satisfaction of adolescent.
  • 30.

    The Factors Affecting Job Satisfaction in Speech-Language Pathologists

    Moon Kyung Im | Insook Cho | park woong sik | 2019, 24(11) | pp.263~270 | number of Cited : 0
    Abstract PDF
    The propose of this study was to investigate the factors affecting job satisfaction in Speech-Language Pathologists and to identify the relationships among job satisfaction self-efficiency and job stress. The participant of this study were 145 Speech-Language Pathologists. The results of present study are as follows. The mean score for job satisfaction was 3.62. job satisfaction was found to have a positive correlation with self-efficiency, and a negative correlation with job stress. The influencing factors impacting on job satisfaction were self-efficiency and job stress. This factors explained that job satisfaction was 46.8% of the variance. Conclusion: This study is expected be useful to find ways to improve subjects’ job satisfaction by increasing their self-efficiency, decreasing their job stress and developing intervention programs as basic data.
  • 31.

    A Study on Motivation and Utilization of SNS for High School Students in Korea

    Jae-Young Moon | 2019, 24(11) | pp.271~276 | number of Cited : 0
    Abstract PDF
    The purpose of this study is to examine how social motivation, functional motivation, playful motivation, and psychological motivation affect SNS user satisfaction in order to find out what factors are important to Korean high school students in using SNS. As a result, playful motives, functional motives, and psychological motives except social motives have an effect on SNS user satisfaction, and this satisfaction has a positive effect on students' value formation. These results suggest that the reason why Korean high school students use SNS is that they need it and enjoy it, that is, they use SNS from a personal point of view, and are not related to social phenomena. However, social motives were found to have a positive effect on functional and playful motives. In other words, various social phenomena, which are social motives, provide an opportunity and theme for the use of SNS, and functional motives have positive effects on playful and psychological motives. In other words, the various functions provided by SNS have a positive effect on the selection and use of SNS.