• Journal of Information Display
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• v.8 no.4
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• pp.5-9
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• 2007

We demonstrate an optically compensated bend (OCB) cell with pixel-isolating polymer wall. The polymer wall is formed by anisotropic phase separation of LCs and UV-curable polymer. The fabricated cell is initially in ${\pi}-twisted$ state so that it shows uniform and fast bend transition without any transition nucleus. The proposed cell has lower driving voltage than conventional OCB cell. Also, the polymer wall provides mechanical stability, hence preventing distortion of display image from external pressure.

• Journal of Information Display
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• v.8 no.1
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• pp.14-17
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• 2007

The toner type paper-like display (PLD) has been developed with two polymer particles having opposite polarity composed of polymer, colorant and external additives (nano-sized silica). Nano-sized silica with triboelectric charge was used for the charge control agent (CCA) and influenced on the electrostatic properties of the silica-coated polymer particles. The surface morphology and the cohesiveness of silica-coated polymer particles were changed with the silica coating time. From these results, it was verified that the PLD cell using silica-coated particles (200 seconds) shows a good white appearance and low driving voltage.

• Journal of the Korean Society for Library and Information Science
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• v.50 no.3
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• pp.155-169
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• 2016

The purpose of this study is to find a policy and to predict the needs of legislative information service of the 20th National Assembly. For this purpose, It is critical to understand the use behavior of legislative information service according to the attribute for the member of the 19th National Assembly. Thus, this study examined the results of reference service of National Assembly Library of Korea using the politics attribute and the relation attribute as independent variables for the member of the National Assembly in the First Half of the 19th National Assembly. Consequently, there were meaningful differences in the use of legislative information service between users by party affiliation, method of an election and introversion. Also, the increased demand of legislative information service was predicted in that the 20th National Assembly is the status of the opposition majority and the three major parties.

• Journal of Korea Society of Digital Industry and Information Management
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• v.12 no.3
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• pp.75-85
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• 2016

MANET is a network composed only mobile network having limited resources and has dynamic topology characteristics. Therefore, every mobile node acts as a route and delivers data by using multi-hop method. In particular, group communication such as multicast is desperately needed because of characteristics such as battery life of limited wireless bandwidth and mobile nodes. However, the multicast technique can have different efficient of data transmission according to configuring method of a virtual topology by the movement of the nodes and the performance of a multicast can be significantly degraded. In this paper, the region based security multicast technique is proposed in order to increase the efficiency of data transmission by maintaining an optimal path and enhance the security features in data transmission. The group management node that manages the state information of the member nodes after the whole network is separated to area for efficient management of multicast member nodes is used. Member node encrypts using member key for secure data transmission and the security features are strengthened by sending the data after encrypted using group key in group management node. The superiority of the proposed technique in this paper was confirmed through experiments.

• Journal of Information Technology Services
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• v.18 no.3
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• pp.117-128
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• 2019

The remarkable achievements of the artificial intelligence in recent years are also raising awareness about its potential risks. Several governments and public organizations have been proposing the artificial intelligence ethics for sustainable development of artificial intelligence by minimizing potential risks. However, most existing proposals are focused on the developer-centered ethics, which is not sufficient for the comprehensive ethics required for ongoing intelligent information society. In addition, they have chosen a number of principles as the starting point of artificial intelligence ethics, so it is not easy to derive the guideline flexibly for a specific member reflecting its own situation. In this paper, we classify primitive members who need artificial intelligence ethics in intelligent information society into three : Developer, Supplier and User. We suggest a new artificial intelligence ethics, Seoul PACT, with minimal principles through publicness (P), accountability (A), controllability (C), and transparency (T). In addition, we provide 38 canonical guidelines based on these four principles, which are applicable to each primitive members. It is possible for a specific member to duplicate the roles of primitive members, so that the flexible derivation of the artificial intelligence ethics guidelines can be made according to the characteristics of the member reflecting its own situation. As an application example, in preparation for applying artificial intelligence to e-government service, we derive a full set of artificial intelligence ethics guideline from Seoul PACT, which can be adopted by the special member named Korean Government.

• Journal of the Korean Operations Research and Management Science Society
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• v.27 no.4
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• pp.111-126
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• 2002

This paper presents an interactive decision procedure to aggregate each group member's preferences when each group member articulates his or her preference information incompletely. An index, an indicative for the preference strength between alternatives, is derived to aid each decision maker to articulate preference information about alternatives. We develop a mathematical programming model that can establish dominance relations when the preference information about values of alternatives, attribute weights, and group member's importance weights are provided incompletely. Also, the preference relation between alternatives is to be considered in the model. Based on the preference strength measure and mathematical model, we develop an interactive group decision support procedure.

• Journal of Information Display
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• v.8 no.2
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• pp.25-31
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• 2007

MgO thick film for ac-PDPs was formed via electrophoresis deposition process and its effect on luminance and luminance efficiency were evaluated. The electrophoresis deposition process of MgO thick film was optimized through parametric study and defects levels in MgO powders was evaluated using cathodoluminescence spectra measurements. The results demonstrate a possibility of using MgO thick film as electron emission layer for ac-PDPs.

• Information Systems Review
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• v.12 no.1
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• pp.23-42
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• 2010

Although organizations are given various benefits with information technologies, they sometimes have suffered fatal damages due to information security incidents now such as computer virus, hacking, counterfeiting, plagiarizing, etc. The fundamentalcauses of information security incidents are closely related to individuals who do not comply with information security policy or rules. The spontaneous self-control of individuals and monitoring for individuals could be the most essential solution for the ongoing observance of information security policy. Thus, the purpose of this study is to analyze effects of punishment and ethics training on compliance of information security policy of individuals in organizations, to determine individual divide among security propensity depending on organization types, and to find the more fundamental solution which leads change of organizational members’ behaviors and self-control. Regardless of the type of organizations, the results of the study suggest that there exist positive effects of punishment and ethics training in all types of organization on compliance of information security rules or regulations. A member of unitary form organization has higher cognition of punishment than a member's cognition of the multi-divisional form organization, while relatively lower awareness of ethics training. Also, a member of public organization has higher awareness of ethics training than a member’s awareness of private organization, while lower cognition of punishment. Finally, the result shows that punishment and ethics training may be major factors which affect information security. It also suggests that organizational security managers have to understand and consider organization member’s propensity relying on organization form and organization characteristics for establishment and enforcement of information security policy.

• Journal of KIISE:Software and Applications
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• v.37 no.3
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• pp.233-237
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• 2010

This paper addresses a problem of violating the member accessibility of a class in C++, which is not detected as an error by existing C++ compilers. The member access specifiers can be used to specify member accessibility. The C++ uses a private or protected specifier for specifying the members which cannot be accessed from outside of an object. However, the private or protected members can be accessed from outside of that object by the pointer arithmetic in C++. We show some violating examples that cannot be detected by existing C++ compilers. The contribution of this paper is to discover and define the new problem of the member accessibility.

• Journal of Information Display
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• v.9 no.1
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• pp.1-5
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• 2008

Two new impulsive driving technologies for 120Hz liquid crystal display (LCD) panels are proposed to improve moving picture quality. One technology generates the dark frame using an adder and a shifter simply without using any look up tables (LUTs). It results in a cost effective impulsive scheme with motion picture quality comparable to that of high speed driving. The other is a backlight flashing method designed to avoid ghost images. The issue of ghost images caused by the slow response time of liquid crystal (LC) is solved by means of 120Hz overdriving and 120Hz backlight flashing. Using the perceived blur edge time (PBET) metric, measured moving picture response time (MPRT) values were 10.8ms and 4.4ms, respectively, while that of 120Hz high speed driving was 10.1ms.