Search

A smart phone is closely related to our lives throughout the world. It processes and stores various information from personal information to classified information of companies. As it is called as “a PC in my hand,” it is similar to a PC so that it is likely to be misused, being exposed to many security threats such as hacking, malicious code, and loss, just like the DDoS attack on PC. A hacker can control a smart phone through a number of zombie smart phone instructions, even shutting down the service on the server. However, it is difficult to adapt the PC defense system to the smart phone environment as is because the attack methods on a PC and a smart phone are different. Therefore, this study aims to compare and analyze DDoS attacks on the smart phone environment and PC environment to predict DDoS attack scenario on the smart phone and establish a defense system to reduce the damage.

Latino youth are the fastest growing group of ethnic minority adolescents in the United States, but their educational needs remain underserved. Although research exploring academic engagement has expanded in recent years, the majority of research examining academic engagement among Latino youth has been cross-sectional. Using data from the National Longitudinal Study of Adolescent to Adult Health, the present investigation used a within-person and between-person analysis to examine the long-term influence of social support from teachers, family, and peers on academic engagement among a nationally representative sample of Latino adolescents. Findings indicated that between-person teacher support and family support were associated with higher academic engagement for all youth. In contrast, within-person teacher support was associated with higher academic engagement, but only for Mexican American youth. Implications for future research and practice are discussed.

The effect of B2O3 on the thermo-physical properties of commercial mold fluxes, including the viscosity, crystallization behavior, and wettability, was investigated. Viscosity was measured using the rotating spindle method, and CCT (continuous cooling transformation) diagrams were obtained to investigate the crystallization behavior at various cooling rates using CLSM (confocal laser scanning microscope). The wettability of the fluxes was determined by measuring the contact angles at 1573 K (1300 °C) using the digital images generated by the sessile drop method and were used to calculate the surface tension, interfacial tension, and work of adhesion for Flux A (existing flux) and B (modified flux). These thermo-physical properties were correlated with the structural analysis obtained using FT-IR (Fourier transform-infrared), Raman and MAS-NMR (magic angle spin-nuclear magnetic resonance) spectroscopy. In addition, DTA (differential thermal analysis) was performed on the samples to measure the liquidus temperatures. Higher B2O3 concentrations resulted in lower liquidus temperatures, consequently decreasing the viscosity, the break temperature, and the crystallization temperature. However, B2O3 addition accelerated crystal growth owing to the higher diffusion kinetics of the cations, which also reduced the size of the liquid/solid co-existing region.

The system of SCADA(Supervisory Control and Data Acquisition Security) used in electricity, water, petroleum and gas, transportation as well as manufacturing, is to collect scattered data and to monitor assets related as a centralized suppression system. ICS system, including current SCADA, is not isolated from outside, being connected with IT solution, and can operate equipment through broadband network, instead of accessing physically. Accordingly, the security accident of suppressing system can occur in the fields of antagonistic nations, terrorists, foundational facility invaders, natural disasters and ill-will or accidental actions. The security control examined in this study provides a defense-in-depth strategy which is applicable to the effective cyber security strategy regarding ICS to protect the confidentiality of information, zero defect, availability through the classification of control, operational control and technological control.

We assessed differential item functioning (DIF) based on computerized adaptive testing (CAT) to examine how perinatal mood disorders differ from adult psychiatric disorders. The CAT-Mental Health (CAT-MH) was administered to 1614 adult psychiatric outpatients and 419 perinatal women with IRB approval. We examined individual item-level differences using logistic regression and overall score differences by scoring the perinatal data using the original bifactor model calibration based on the psychiatric sample data and a new bifactor model calibration based on the perinatal data and computing their correlation. To examine convergent validity, we computed correlations of the CAT-MH with contemporaneously administered Edinburgh Postnatal Depression Scales (EPDS). The rate of major depression in the perinatal sample was 13 %. Rates of anxiety, mania, and suicide risk were 5, 6, and 0.4 %, respectively. One of 66 depression items, one of 69 anxiety items, and 15 of 53 mania items exhibited DIF (i.e., failure to discriminate between high and low levels of the disorder) in the perinatal sample based on the psychiatric sample calibration. Removal of these items resulted in correlations of the original and perinatal calibrations of r = 0.983 for depression, r = 0.986 for anxiety, and r = 0.932 for mania. The 91.3 % of cases were concordantly categorized as either "at-risk" or "low-risk" between the EPDS and the perinatal calibration of the CAT-MH. There was little evidence of DIF for depression and anxiety symptoms in perinatal women. This was not true for mania. Now calibrated for perinatal women, the CAT-MH can be evaluated for longitudinal symptom monitoring.

With the international community’s efforts to respond to climate changes progressing in the world, Green IT technologies have also developing rapidly. As green IT technologies against climate change has emerged as the agenda of social sciences, the concept of green IT has evolved into two types: greening of IT and greening by IT. In order to cope with the long-term climate change, it is necessary to discuss whether the greening of IT and the greening by IT evolve in some way. In this context, this study reviewed in depth green IT research trends as well as concepts of greening of IT and greening by IT to respond to climate change. Furthermore, it proposed a life cycle assessment (LCA) as an indicator for assessing green IT. The results of this study are expected to contribute to solving political problems with green IT and continuing research in the climate change era. They are also presented to make a contribution to the development of Received (January 25, 2016), Review Result (February 10, 2016) Accepted (February 17, 2016), Published (April 30, 2016) 156-743 Department of IT Policy and Management, Soongsil University, Seoul, Korea email: cnn5001kr@naver.com 156-743 Graduate School of Software, Soongsil University, Sangdo-dong, Dongjak-gu, Seoul, Korea email: keita89@naver.com 156-743 Dept ITPM, Soongsil Univ., Sangdo 1-dong, Dongjak-gu, Seoul, Korea email: kshan@ssu.ac.kr (Corresponding Author) 156-743, Graduate School of Software, Soongsil University, Seoul Korea email : kjb123@ssu.ac.kr A Study on Green IT Evaluation Indicators Copyright c 2016 HSST 10 IT industry in Korea by presenting the concepts of greening of IT and greening by IT. Based on this, in this study, as a precondition of Green IT, Discussed by emphasize the need for environmental load measurement method based on the entire life cycle of the product is finished.

A study on trading using social big data analysis was conducted under the supposition that social members' collective emotion may affect on stock price. Social data is increasing, and is called as big data, it enables us to study social members' emotional flow which changes in real time. This study, we extracted Received (January 18, 2016), Review Result (February 1, 2016) Accepted (February 10, 2016), Published (March 31, 2016) 156-743 Dept ITPM(IT Policy & Management), Soongsil Univ., Sangdo 1-dong, Dongjak-gu, Seoul, Korea email: shsong@daumsoft.com 156-743 Dept ITPM, Soongsil Univ., Sangdo 1-dong, Dongjak-gu, Seoul, Korea email: seonho@korea.com 156-743 Dept ITPM, Soongsil Univ., Sangdo 1-dong, Dongjak-gu, Seoul, Korea email: greenyon@naver.com 156-743 Graduate School of Software, Soongsil University, Sangdo-dong, Dongjak-gu, Seoul, Korea email: hklee@ssu.ac.kr 156-743 Dept ITPM, Soongsil Univ., Sangdo 1-dong, Dongjak-gu, Seoul, Korea email: kshan@ssu.ac.kr (Corresponding Author) 156-743 Graduate School of Software, Soongsil University, Sangdo-dong, Dongjak-gu, Seoul, Korea email: kjb123@ssu.ac.kr The Stock Trading Model Using Social Big Data Analysis Copyright c 2016 HSST 92 emotions from social data with national language techniques, and found stocks highly related to emotional flow by statistic analaysis. Portfolio predicted stock price by monthly with machine learning and mean reversion strategy, and Black-Litterman's model was used as asset allocatin model. On this model, we conducted an experiment from Jananuary, 2011 to October, 2014, and the results exceeded 20% of KOSPI earning rate. We conducted another study from January, 2015 to August, 2015 on actual investment, and the result showed better performance compared to KOSPI earning rate by 12%. Through this research, we could verify the possibility of outperform compare with market performance of robotrading using AI based bigdata analysis.

Date Presented 03/26/20 The area of OT has been extended to preventive approaches from rehab. With regard to the increasing aging population, health professionals are trying to find effective approaches to maintaining and enhancing the health of healthy older adults. Although the concept of OB has a potential for preventive intervention, little is known about the scientific relationship between OB and health-related variables in older adults. Primary Author and Speaker: Sangmi Park Contributing Authors: Ji-Hyuk Park, Hae Jong Lee, Byoung-Jin Jeon, Eun Young Yoo, Jong Bae Kim

H. pylori is classified as a group I carcinogen by WHO because of its involvement in gastric cancer development. Several reports have suggested anti-bacterial effects of menadione, although the effect of menadione on major virulence factors of H. pylori and H. pylori-induced inflammation is yet to be elucidated. In this study, therefore, we demonstrated that menadione has anti-H. pylori and anti-inflammatory effects. Menadione inhibited growth of H. pylori reference strains and clinical isolates. Menadione reduced expression of vacA in H. pylori, and translocation of VacA protein into AGS (gastric adenocarcinoma cell) was also decreased by menadione treatment. This result was concordant with decreased apoptosis in AGS cells infected with H. pylori. Moreover, cytotoxin-associated protein A (CagA) translocation into H. pylori-infected AGS cells was also decreased by menadione. Menadione inhibited expression of several type IV secretion system (T4SS) components, including virB2, virB7, virB8, and virB10, that are responsible for translocation of CagA into host cells. In particular, menadione inhibited nuclear factor kappa-light-chain-enhancer of activated B cell (NF-κB) activation and thereby reduced expression of the proinflammatory cytokines such as IL-1β, IL-6, IL-8, and TNF-α in AGS as well as in THP-1 (monocytic leukemia cell) cell lines. Collectively, these results suggest the anti-bacterial and anti-inflammatory effects of menadione against H. pylori.

Owing to the energy and environmental issues, energy recovery technologies attract an increasing interest. Thermoelectric power generation is a recycling technology, which directly converts heat energy into electric energy by reusing waste heat. In this study

Human voices are one of the easiest ways to communicate information between humans. Voice characteristics may vary from person to person and include voice rate, genital form and function, pitch tone, language habits, and gender. Human voices are a key element of human communication. In the era of the Fourth Industrial Revolution, the voices are the main means of communication between people and people, between humans and machines, machines and machines. And for that reason, people are trying to communicate their intent clearly to others. In the process, language information and various additional information are included. Information such as emotional state, health status, reliability, presence of lies, changes due to alcohol, etc. These languages and non-linguistic information can be used as a device to assess the lie of telephone voices that appear as various parameters. Especially, it can be obtained by analyzing the relationship between the characteristics of the fundamental frequency (fundamental tone) of the vocal cords and the resonance frequency characteristics of vocal tracks. Previous studies have extracted parameters for false testimony of various telephone voices and conducted this study to evaluate whether a telephone voice is a lie. In this study, we proposed a judge to judge whether a lie is true by using a support vector machine. We propose a personal telephone truth discriminator.

The purpose of this study is to verify the relationship between quality factors, expected value and educational satisfaction of NCS education system for university students A total of 289 college students from Seoul and Gyeonggi provinces were selected for the study and a questionnaire survey was conducted from March to April 2017. The collected questionnaires were analyzed using SPSS 22.0 and AMOS 22.0 statistical programs and the following study results were derived. First, responsibility, contentability, assurance and usefulness have significant influence on perceived value, and reactivity and tangibility have no effect on quality factor of NCS education system. Second, responsibility, contentability, assurance and usefulness have a significant effect on educational satisfaction, and reactivity and tangibility have no effect on educational satisfaction. Finally, the perceived value of the NCS education system has a significant effect on educational satisfaction. Therefore, this study suggested implications for the satisfaction of the values and educational satisfaction of the students in terms of educational service quality provided by the NCS education system.

Bluetooth Low Energy(BLE) is becoming the most preferred technology for indoor positioning solutions as it provides a low cost, reasonably accurate, and zero infrastructure solution, and is supported by most mobile devices as well. BLE can maintain relatively stable signal strength and has a higher sample rate, which is important for accurate distance determination. On the other hand, RSSI values are not always accurate due to fluctuating signal strength for many reasons, so a designated process and algorithm are used to determine the actual location of the mobile device. In this paper, we propose a BLE plate and Pedestrian Dead Reckoning (PDR) combined algorithm that provides a wide range of accuracy and can be applied to indoor positioning for large scale space. The system tested in this study kept positioning errors to within 2.2 m in real environment, and is applicable as an indoor navigation system for very large spaces such as airports and arenas.

It is important to study and apply the application method developed to service from the SCM module for designing SaaS level to the cloud system, which supports SCM tasks such as procurement, purchase, logistics and standard information as to industrial sectors. These industrial sectors are divided into sewing clothes manufacturing, other metal processing product manufacturing and building construction business in terms of usage targets of cloud-based common collaboration platform. In addition, based on the importance and object of works such as common collaboration process, cloud-based common collaboration platform objective model is designed by selecting development model and service model suitable for this study. The cloud-based common collaboration platform will be used by many and unspecified companies, which is provided as the form of public cloud. Target model design means SaaS level finally. In the case of module development costs of collaboration works, it is required to be studied more to the future. By the way, in the case of the common collaboration module, the SCM tasks which can be applied to all industrial sectors have been calculated, which was based on the manufacturing industry. Since the SCM-related functions provided by the cloud-based common collaboration platform are not specific to the specified companies sectors, they are available to all companies. Furthermore, the SCM-related functions provided by the cloud-based common collaboration platform are various and selected by the modules freely because they are provided at the level of the cloud SaaS. The SCM-related functions provided by the cloud-based common collaboration platform are easy to select. It is necessary to make universal service available to the enterprise unlike the government that has been carrying out the support project to the specified company sectors on a one-to-one basis.

Background Natural killer (NK) cells are crucial components of the innate immune system, providing the first line of defense against pathogens. In a previous study, we demonstrated prophylactic activity of water extract of Korean mistletoe (Viscum album coloratum) on tumor metastasis. However, the leading compound from water extract of Korean mistletoe was not clearly addressed. Objective The purpose of this research was mainly focused on addressing the effect of Korean mistletoe lectin (KMLC) on NK cell cytotoxicity, and the ability of cytokine secretion as well as its signal transduction, mitogen-activated protein kinase (MAPK) pathway. Methods KMLC was used to test NK cell-mediated cytotoxicity in vitro and in vivo. Non-isotope cytotoxicity assay (bis-N,N,N',N'-tetraacetic acid (BATDA) release assay) was performed to test the cytotoxicity of NK cells against target tumor cells. Receptor expression was checked by flow cytometry analysis and MAPK signal molecules were analyzed by immunoblotting. Results and conclusions KMLC at 200 ng/mL increased the cytotoxicity of NK92 cells by 35% compared with untreated cells. KMLC-treated (at 100 ng/mL) mice splenocytes showed a 20% increase in cytotoxic activity. Also, the B chain, one of the subchains of KMLC, increases perforin expression. We demonstrated that the signal transduction controlling NK cell cytotoxicity was mediated by upregulation of the NKG2D receptor and expression of a cytotoxic effector molecule. These results suggested that KMLC possessed immunological activity, mediated by NK cell activation.

After 2000, the Education Office has supplied about 1.3 million PCs. to every elementary, middle and high schools including school administration offices aiming to allow one person to use one PC. The Education Office has purchased 220 thousands new PCs a year ( it costs 176 bil. won, 800 thousands won per pc.) in order to exchange obsolete PCs, appled in six year exchange cycle. Sometimes, delayed and Received(November 27, 2015), Review request(November 28, 2015), Review Result(1st: December 13, 2015, 2nd: January 03, 2016) Accepted(January 12, 2016), Published(January 31, 2016) 110-781 Information Management Division, Seoul Metropolitan Office of Education, Songwol-gil 48, jongno-gu, Seoul, Korea email: pch@sen.go.kr 135-744 Chief Financial Officer, DBCS, 6F, Rosedale Bldg, #280, Gwangpyeong-ro, Gangnam-gu, Seoul, Korea email: kyong@dbcs.1co.kr 156-743 Graduate School of Software, Soongsil University, Sangdo-dong, Dongjak-gu, Seoul, Korea email: worhs0410@gmail.com 156-743 Graduate School of Software, Soongsil University, Sangdo-dong, Dongjak-gu, Seoul, Korea email: nylee@ssu.ac.kr (Corresponding Author) 156-743 Graduate School of Software, Soongsil University, Sangdo-dong, Dongjak-gu, Seoul, Korea email: kjb123@ssu.ac.kr A Study on the Cloud Computing Service for Education Organization Copyright c 2016 HSST 30 late exchanges cause to much complaint. The Education office also, has payed 68 billion won a year for office program license fee. There may be spending resource lavishly in reason that amount of pc affairs of teachers is less than only one forths of general staff in education office. The educational office tried to adapt pc virtualization SBC concept, to reduce pc replacement costs and obtain effective management in school pc training center 2002, but good performance has not been actualized in reason that lack of expert members for the device management overhead and server operating along with old pc recycling. This study aims to a proposal to solve the above extravagance problem by applying VDI (Virtualization desktop Infra) and SAAS (Software As A Service) system which will show the cost reduction and management efficiency.

Epstein-Barr virus (EBV) has a pathogenic role in several lymphomas including diffuse large B-cell lymphoma (DLBCL). In this study, we detected EBV from formalin-fixed paraffin embedded (FFPE) tissues of DLBCL patients by RT-PCR and compared the sensitivity of the RT-PCR method to in situ hybridization (ISH) method. The RNA was extracted from 91 FFPE samples with DLBCL and amplified with primers targeting EBV-encoded small RNA (EBER) by RT-PCR. When using the RT-PCR method, 13 of 91 patients (14.3%) were positive and among these 13 cases, 7 cases (7.7%) were from > 50-year-old patients that is classified as EBV positive DLBCL of the elderly. In previous results using ISH method, 3 of 91 patients (3.3%) were positive and 2 case (2.4%) were older than 50-year-old. These results indicate that RT-PCR method used in this study shows a higher sensitivity than ISH method. The ratio of male versus female among the EBV positive samples was 1.2:1 with the ratio of male higher. If RT-PCR method having high sensitivity is used simultaneously as well as the ISH method providing the information of the EBV positive cellular location, it is expected that EBV will be more accurately detected.

Temporomandibular joint dislocation causes considerable pain, discomfort, and swelling. The anatomic construction of the articular fossa and the eminentia articularis may predispose to dislocation, and weakness of the connective tissue forming the capsule is believed to be a predisposing factor. The capsule may be stretched and, more rarely, torn. Dislocation may be unilateral or bilateral and may occur spontaneously after stretching of the mouth to its extreme open position, such as during a yawn or during a routine dental operation. Manual reduction with the patient under muscle-relaxing condition or anesthesia is recommended method. After the reduction of an acute dislocation, immobilization of the jaw is recommended to allow the stretched and sometimes torn capsule to heal, thus preventing recurrence. A Barton's bandage may be applied for 2 to 3 weeks to prevent the patient from opening the jaw too wide. But, it results in recurrent dislocation in the neurologically disabled patient, because of loose intermaxillary fixation. This is a case report about management of recurrent temporomandibular joint dislocation by multiple loop wirings and intermaxillary elastics in cerebrovascular accident patient.

Agile development methodologies and open source software development process(OSSDP) has repeatedly called for common frequent releases and short development cycle. TDD(Test Driven Development) and refactoring (Refactoring) represented by the characteristics of Agile Techniques, and frequent communication represented by the characteristic of Agile methodology. If you apply the three factors in OSSDP will increase the satisfaction of the users and then participating in the OS project maturity also will increase. Received (September 03 2015), Review Result(September 21, 2015) Accepted(October 05, 2015), Published(December 31, 2015) 156-032 Dept. SW engeneering, Graduated Soongsil University, Sangdo-Dong, Dongjak-gu, Seoul, Korea email: hyojung.sohn@gmail.com 156-032 Dept. SW engeneering, Graduated Soongsil University, Sangdo-Dong, Dongjak-gu, Seoul, Korea email:marse101@naver.com 156-032 Dept. SW engeneering, Graduated Soongsil University, Sangdo-Dong, Dongjak-gu, Seoul, Korea email: feeling127@naver.com (Corresponding Author) 156-032 Dept. SW engeneering, Graduated Soongsil University, Sangdo-Dong, Dongjak-gu, Seoul, Korea email: kjb123@ssu.ac.kr Collaboration tools of the Agile methodology impact on the OS project evaluation Copyright c 2015 HSST 10 We established this research model. OS projects are geographically dispersed users, but utilizes several tools to communicate online degree in communication is bi-directional emphasis in Agile methodologies that reflect the characteristics of Web 2.0 tools than the traditional one-way communication, openness, communication reported to be satisfied by using the available tools, existing tools and improved tools to investigate the influence on user satisfaction. In this paper eoteumyeo to focus on communication elements of the three factors, further research, we want to make through the final research model studies and the results for each TDD and refactoring.

Some virulence proteins of Helicobacter pylori, such as vacuolating cytotoxic protein A (VacA) and cytotoxinassociated gene protein A (CagA) have been reported to be causative agents of various gastric diseases including chronic gastritis, gastric ulcer or gastric adenocarcinoma. The expression level of these virulence proteins can be regulated when H. pylori is exposed to the antibacterial agent, cyanidin 3-O-glucoside (C3G) as previously reported. In this study, we analyzed the quantitative change of various virulence proteins including CagA and VacA by C3G treatment. We used 2-dimensional electrophoresis (2-DE) to analyze the quantitative change of representative ten proteome components of H. pylori 60190 (VacA + /CagA + ; standard strain of Eastern type). After 2-DE analysis, spot intensities were analyzed using ImageMaster TM 2-DE Platinum software then each spot was identified using matrix assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF-MS) or peptide sequencing using Finnigan LCQ ion trap mass spectrometer (LC-MS/MS). Next, we selected major virulence proteins of H. pylori among quantitatively meaningful ten spots and confirmed the 2-DE results by Western blot analysis. These results suggest that cyanidin 3-O-glucoside can modulate a variety of H. pylori pathogenic determinants.

Financial information systems operated by financial institutions are based on various customers’ information. If leaked for illegal and vicious purposes, financial information can bring a lot of damages, including financial damages. Therefore, continuous demands on IT compliance related to financial information systems have risen as financial policy institutions suggest integrated plans for improvement on clarity of financial information service and reinforcement on safety of information systems operation. In order to meet such demands, financial institutions invested efforts and capital to prevent illegal leaks of financial information outside of barriers, however, it happens that not only do information leaks caused by external factors, but also ones caused by internal information system users occur quite frequently. Therefore, financial information systems must be operated and managed by authorized internal users. For that, this study analyzes various authentication technologies and compliances as advanced research then suggests a new authentication model for financial information system users. Through this model, we expect that the system will be able to secure safety in operation and management of financial information system hence, to deal with illegal leaks of financial information.

Recently, as Internet is widely used due to the increased spread of the internet network, the software with malicious intent is distributed via the internet and its infection path gets various too. In particular, attacks by Bot mainly work at C&C (command-and-control) server but it can be secured just by blocking IP because C&C server runs in form of IP. However, this attacker too gets gradually intelligent as they try to connect periphrastically in order to avoid server blocking. Once these malicious codes infiltrate user’s system, it is not easy to detect it through general detection method while it is running. In this paper, we propose malicious process detection system based on security agent in order to prevent damage caused by malicious code infection from spreading.

For the agile development methodology that repeats the frequent releases and the short development periods, there are some value practices that we have to keep. Among them, three typical practices were selected: use of Web 2.0 collaboration tool, adoption of the test driven development (TDD) and refactoring. The agile practice that forces the communication between team members was defined with the use of Web 2.0 collaboration tool. When this is applied to the development method of open-source projects which are dispersed geographically, temporally and culturally, it is expected to raise the satisfaction of OS project users and to contribute the maturity of community. It was applied to the study models that were drawn out from the precedent studies. Today, OS project users are adopting diverse tools for the online communication. But the degree of communication that is emphasized in the agile methodology can be satisfied only with the use of two-way, open and communicable tools reflecting the characteristics of Web 2.0 rather than with the conventional one-way information transmitting tool. In this situation, it was examined how the conventional and the improved tools have influence on the users’ satisfaction. This paper is focusing on the communication factor among 3 factors.

Recently, form of domestic industries is undergoing changes composite of goods and services and enlargement. These changes in the industry requires that react quickly to changes while still increasing the structural complexity of IT. Therefore, today's information system and a structure could lead to a small and simple components and structures that are continuous in a service-oriented integration needs, flexibility, integrity, reusability and the like is necessary. In this paper, we propose the application of these into one integrated IT in ways that reflect the structural changes service oriented architecture-based integrated business architecture model. These are business architecture with distinctive characteristics can bring the effect of such new business and agile response of the product, improving the consistency and flexibility of the business.

In order to protect an internal system from malicious attacks outside, a trial of separating a network logically and physically is made these days. Still, physical network separation is vulnerable to social engineering hacking. For the reason, main organizations in charge of national infrastructure facilities need to establish a safer network. The control system of the organizations is separated from business network and is being operated in a closed environment, however, their hacking accidents, such as data leakage by security USB loss and virus infection over the internet, occurred. In the circumstance, it is hard to ensure that the control system being separated from business network is safe. If control information in a business network is sent to a control system without any control, it is possible to cause massive damage to the national system. Accordingly, this thesis proposes a one-way data transmission system. The proposed system receives and processes information which is sent to a business network from a control system, but does not transmit control information of a business network. In this way, under any circumstances, it is impossible to access an infrastructure system via an internal control network from an outside network, and thus it is possible to protect national infrastructure facilities safely.

As information technology environment gets based on mobile, cloud, BYOD, mobile terminal just used for communication in the past is changed to support e-commerce and mobile office using the internet. However, threat of tap and information leak due to terminal loss, theft or infection of malware occurs. Corporations are strengthening access control and security through attaching sticker to a smart phone camera but it looks not enough as fundamental protection measures. In order to maintain high level of security, security control function should be applied and location-based entrants’ security policy should be established so that a method to control mobile device can be directly suggested.

Common Criteria (CC) is a global standard for the information technology security evaluation of IT products. IT products must obtain at least a certain Evaluation Assurance Level (EAL) to be supplied to governmental institutions. The general software development life cycle (SDLC) does not provide guidelines for the removal of the weaknesses in the software development process for CC certification, and software applications developed with security weaknesses that have not been removed can lead to fatal situations. At present, CC provides only security certification for the target of evaluation (TOE) and does not provide guidelines regarding the secure software development life cycle (SSDLC), which considers the weaknesses in the development process. If a TOE that has been specialized for CC is developed by SSDLC, both evaluators and developers can undertake CC certification from an objective standpoint. This paper presents an SSDLC that is appropriate for CC by discerning weaknesses, by referring to MS-SDL, McGraw’s TouchPoints, and OWASP CLASP based on the weaknesses provided by CWE (Common Weakness Enumeration). The findings of this study can be used as guidelines for the development process of weakness-free software applications by developers aiming for CC certification.

This study aims to understand how to utilize bag data and measures to establish business strategies. In the past, the management information system, the independent infra-based architecture, had a limit in processing data with active decision-making according to the real-time managers’ decision-making supports based on batch processing. However, real-time data analysis and prediction have become possible through the rapid development of information technology, and now, the management information system can be established to react actively to fast-changing external environmental changes. Real-time data analysis methods include semantic search, social network search, and pattern-based information analysis search. We studied how to apply the analyzed data through such methods to establish measures to business strategies.

This study designed a safe combined certification system by approaching the matter of certification upon recent expansion of the cyber world and the market size of mobile shopping through a newer plan. Recently, mobile field has drawn much attention and it is used for most means of living for users like purchase of commodity, payment, and user certification. The mobile economy also grows by this trend, but hacking accidents or financial crimes are also in full swing. It is expected that the service for mobile in the future will increase more than ever, but in security aspects we still use problematic certification and security system. Data control service in the future is expected to do a lot with the service, which basically stores all services in phones as well as service providers through cloud service. Data control service will lead to the expansion of IoT (Internet of Things) service, as it substitutes existing off-line backup and safely provide user data regardless of location or kinds of devices. That is, users can use data from the devices connected to the Internet without copying or moving to devices users want to use. To use this data safely, establishing a certification system of users will be an ever more important factor. Therefore, this treatise is going to suggest the plan that we can conduct the certification in a safer way among several threats. In particular, mobile hacking is a very serious and important issue, as it could directly lead to monetary loss. When certification is insufficient, the possibility of a third party reaping benefits through hacking is greater. This treatise is going to suggest a model that service providers can provide safe certification service by performing verification of transaction and data through electronic certification. Building of a combined and safe certification system upon recent FinTech boom is a very important factor and this study is going to suggest various structures in aspects of security and convenience. Keyword: Certificate, ISP, Authentication, Mobile, Payment

The government has adopted the field of “Internet of Things” as a national strategic project, announcing the Internet of Things master plan to achieve a leading country of hyper-connected digital revolution last May. The government has the promotional strategy of reinforcing the competitiveness in software (SW) sensor components devices, training specialists that will lead Internet of Things (IoT) services and products, and internalizing security for Internet of Things products and services. Internet of Things, thus expected to grow from ₩2 trillion and 300 billion last year to ₩30 trillion by 2020 in the market, refers to the Internet environment where people, things around, data, etc. are all connected to the wired and wireless network to mutually create, collect, share, and utilize information. Internet of Things is the technology and service that includes generating information (sensor) - acquisition (parts, devices) - sharing (Clyde) - utilization (Big Data) - application software. Internet of Things is getting a lot of attention from the public due to the effect of increasing export businesses and jobs and has become a buzzword among businesses. The Internet of Things market has a tendency to grow in the future as it is extended from social infrastructure (utilities, transportation, automation, etc.) and safety management to the consumer sector centered on life services. Sophisticated wireless communication technology is expected to form a huge network connected to all object units as a communication function.

Most people with the proliferation of smartphone holds a smart phone. In addition, the FinTech has developed a user coming age that can easily pay using a smartphone without a purse. However, this convenience and security of the effort to compensate for weak security, because it is necessary to inverse relationship. If user's smartphone is attacked by hackers or lost equipment and payment behavior has occurred, the introduction of transaction detection system that can detect when more than this abnormal behavior occurs, this is urgent. Accordingly, the paper proposes a way to apply the above transaction detection system using the location-based information.

디지털 운행기록장치는 2011년부터 상용차에 대해 법령으로 장착이 의무화되었다. 이 장치는 자동 차의 속도, 주행거리, 위치 등을 수집하는 기록장치로서 이를 통해 수집된 정보로 운전 형태를 파악 하고 분석해준다. 그러나 상용차 운전자를 대상으로 하는 디지털 운행기록장치의 기능을 일반 운전자 가 사용하는 데에는 비용 등의 제약사항이 따른다. 이런 이유로, 본 연구는 일반 운전자의 위험운전 행동을 분석하고 파악하여 결과를 제공하는 스마트폰 어플리케이션의 설계를 목적으로 한다. 이 연구 에서 사용되는 위험 운전 판단 알고리즘은 교통안전공단에서 제공하는 위험운전에 대한 정의를 바탕 으로 한다. 어플리케이션에서 분석된 결과는 실시간으로 사용자에게 제공되며, 이를 통해 운전자들의 안전 운전을 유도하여 사고율을 줄이고자 한다.

In the recent work environment, any firm or organization can’t guarantee the achievement of its strategic goals, that is, its success without utilizing IT well, so the IT became the object of main attention, and the reliance on the IT gets more intensified in all business fields. Therefore, each firm and public institute take enormous efforts for setting their internal audit systems appropriate for the recent business environment. Especially as the Public Audit Act began to take in effect from 2010, its raised the necessity to develop a new internal audit administration meeting a more advanced internal audit body’s role and its status as well as the changes in the administration different from the past administration. Reflecting the past, the existing internal audit activities have done around the post-exposure approaching to the known risks or a kind of fragmentary checkup around samples. Besides, the existing internal audits have focused on pointing out the organization’s problems and controlling them. So the organization being audited did not fully accept the internal audit results and there were also some aspects not meeting the internal customer’s needs. Therefore this study aimed to propose an improved model of audit information system supporting the recent audit trends (enhancing the efficiency of work process and consulting) in order to draw out a more strategic improvement plan after analyzing the status quo of public firms’ internal audits and their problems through the review of existing studies and literature about the theme.

Financial information systems play such a pivotal role in the financial institution services that are provided for a large customers on the basis of various information including the personal information. As for the personal information collected during the transactions in the financial information systems, huge efforts and investment have been made to protect previously them from being inappropriately misused or illegally used if they could be released. Unfortunately, the frequent accidents on the leakage of sensitive personal information have occurred recently not only by external service users but even by internal system users. Therefore, the aim of this study is to suggest a model of advanced two-channel authentication for internal users in order to increase the stability of financial information systems with enhanced security.

Currently, the previous studies on the concept, configuration, and system regarding spacial information policies show the little progress. However, these studies only propose the basic structure system in terms of a policy theory, seeking and suggesting the basic concept to establish spacial information policies. In the shift of a new paradigm from a PC-based paradigm that began in the mid-2000s to the current smart society based on mobile devises, such as smart phones, this study thus reviewed the strategic direction of the propulsion to establish the desired future strategy for the spatial technology policy with spatial information system that can influence the future national competitiveness of Korea. The results of this study is expected to be used to analyze a variety of issues and technological changes on geospatial intelligence at the global level and to support the establishment of a road-map for policies and research & development on domestic geospatial information.