• KSII Transactions on Internet and Information Systems (TIIS)
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• v.12 no.10
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• pp.5100-5119
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• 2018

Most of existing privacy-preserving multi-authorities attribute-based encryption schemes (PP-MA-ABE) only considers the privacy of the user identity (ID). However, in many occasions information leakage is caused by the disclosing of his/her some sensitive attributes. In this paper, we propose a collusion-resisting ciphertext-policy PP-MA-ABE (CRPP-MACP-ABE) scheme with hiding both user's ID and attributes in the cloud storage system. We present a method to depict anonymous users and introduce a managerial role denoted by IDM for the management of user's anonymous identity certificate ($AID_{Cred}$). The scheme uses $AID_{Cred}$ to realize privacy-preserving of the user, namely, by verifying which attribute authorities (AAs) obtain the blinded public attribute keys, pseudonyms involved in the $AID_{Cred}$ and then distributes corresponding private keys for the user. We use different pseudonyms of the user to resist the collusion attack launched by viciousAAs. In addition, we utilize IDM to cooperate with multiple authorities in producing consistent private key for the user to avoid the collusion attack launched by vicious users. The proposed CRPP-MACP-ABE scheme is proved secure. Some computation and communication costs in our scheme are finished in preparation phase (i.e. user registration). Compared with the existing schemes, our scheme is more efficient.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.14
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• pp.323-348
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• 2000

Facing the current difficulties of fisheries industry nationally and internationally, economic cooperations between South and North Korea are needed urgently. Applying the process of economic integration to fisheries sector of separated nation, cooperation processes are divided as follows; (1) indirect and direct fisheries trade, (2) reciprocal use of fishing grounds, (3) joint venture in fisheries sector, (4) free movement of production factors and common fisheries policy. Here, fisheries trade falls under economic interchange stage. Reciprocal use of fishing ground and fisheries joint venture come in economic cooperation stage. Finally. free factor movement and common fisheries policy are related with economic integration stage. This paper investigates the schemes for fisheries cooperation between South and North Korea in preparation for a unified Korea, focusing on fisheries trade. The paper is composed of 5 chapters. Chapter 2 discusses structure and characteristics of North Korea trade, and trade situation between South and North Korea. Then, the present condition of North Korea fisheries industry and fisheries trade trend between South and North Korea are presented in chapter 3. Next, chapter 4 tackles the most common problems encountered in fisheries trade between South and North Korea, and the devices and schemes to raise fisheries trade between South and North Korea. Finally, chapter 5 summarizes and concludes the research results.

• The Journal of Industrial Distribution & Business
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• v.8 no.5
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• pp.23-33
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• 2017

Purpose - The present study aims to examine the relationship between small enterprise start-up preparatory factors and increases in sales and operating profits, which are business performances utilizing the National Survey of Actual Conditions of Small Enterprises conducted by the Small Enterprise, Market Service. Research design, data, and methodology - Start-up preparatory factors were divided into six types; business type, start-up history, start-up motives, preparatory periods, and start-up funds to figure out the relationship between sales and operating profits with regression analyses. Regression analyses were conducted based on the foregoing with a view to identifying the effects of start-up preparatory factors on business performance. Results - Since start-up preparatory factors generally affect business performance, it was identified that start-up preparatory factors importantly affect operating profits and sales, which are business performances. However, start-up preparatory periods and the implementation of education among preparatory activities were shown to have no effect on business performances, and the effect of the ratio of start-up fund provided by the founder on operating profits was shown to be not significant. Conclusions - The present study comprehensively examined those start-up preparatory factors that have positive effects on business performances after start-up. The present study is meaningful in that it can provide positive implications for efficient start-up of small enterprises hereafter.

• Journal of Digital Convergence
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• v.14 no.4
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• pp.79-88
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• 2016

The priority policy measures to draw peaceful unification is to induce North Kore to open the Internet. In order to induce the Internet open for exchange and cooperation in ICT industry of the two Koreas, a preparation task was drawn after analyzing ICT standard, current state of Internet and industry, and feasibility of North Korea. The priority task for the exchange and cooperation in ICT industry of North and South Korea requires an effort to develop North Korea's underdeveloped technology level. Thus, to decrease the technology gap must precede, providing state-of-the-art ICT infrastructure of the South. In this paper, the inducement to draw the Internet open of North Korea through technical specifications and standardization in ICT industry of the North and South was studied.

• Journal of Families and Better Life
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• v.19 no.2
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• pp.13-21
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• 2001

The purpose of this study is to examine the Marriage Preparation and Preservation Act adopted in Florida which require premarital counseling and covenant marriage laws of Louisiana and Arizona among many kinds of family policy which recently are designed to prevent divorce in the United States of America. Most of states in the U.S. require the marriage license prior to having a marriage ceremony. Covenant marriage legislation has admirable motives to strengthen marriage and cure the defects of the no-fault system. In that legislation, the imposition of waiting period for the no-fault ground of divorce, proof of fault requirements, consent requirements, and mandatory course or counseling attendance will likely serve as deterrents to those seeking divorce as a first resort. To sum up, by offering preventive measures in the form of premarital counseling and waiting period before marriage, covenant marriage will force couples entering marriage to carefully consider their actions before they act and prevent broken marriages in the first place. In response to rising divorce rates, the Koreas family policy has put its emphasis of fixing social problems accompanied with family dissolution. Rather, this study suggests that attention in Korea also should be shifted from broken marriages to preventing them.

• Journal of the Korea Society of Computer and Information
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• v.22 no.10
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• pp.137-144
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• 2017

In this paper, we propose the policy direction of SW education in 2015 Revised National Curriculum with an analysis of pre-service elementary school principals' awareness and needs on SW education. One hundred two pre-service principals had been questioned about their acknowledge the importance and necessity of SW education and willingness to develop the better SW curriculums. In details, 1) it is necessary to change of starting time to initiate SW education in 3rd grade or 4th grade, which is younger than it was planned at the 2015 Revision National Curriculum, and change over to be the independent subject. 2) It is necessary to establish a system for selecting a specialized teacher, such as a dedicated teacher. 3) It is necessary to urgently be obtained of government budget for wireless Internet. These changes in the SW education policy would lead to the positive results from works by students and teachers.

• Korean Journal of Agricultural Science
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• v.35 no.2
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• pp.247-262
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• 2008

The purpose of this study is to evaluate farmer's general contents on the current direct payment schemes and to derive some improvement measures, based on the survey data for the three types of direct payment schemes currently executed in Korea; Rice Farmer's Income Support, Early Retirement Aged Farmer's Support and Less Favored Area Direct Payment. In recent years we have introduced diverse direct payment schemes that are expected to have immediate effects in a short term period without enough preparation of the policy, which raises some contradiction between the agricultural policy and the original purpose of the direct payments. The result shows some important revisions should be made related the direct payment schemes, such as farmer's income stability through the improvement of unit payment and the payment length jointed with criteria of the payment, in addition to keeping up multifunctionality of agriculture and enhancing the effect of structural adjustment in agriculture.

• Convergence Security Journal
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• v.9 no.4
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• pp.55-62
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• 2009

Industrial Security is a management activity protecting industrial asset of enterprise by application of security elements(physical, IP, conversion security tools) and can be understood as a comprehensive term including software aspect(establishment of policy and strategy, maintenance operation, post- response act, etc.) as well as the operation of hardware elements. In this paper, after recognizing the definition and relative concept of industrial security, the role and its relative laws of the industrial security organizations, the management system and the reality, I will find some problems and submit a reform measure. Furthermore I would like to propose the policy direction to enhance the national competitiveness and to become one of the advanced nations in 21st industrial security through the effective industrial security activities of our enterprises.

• Convergence Security Journal
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• v.18 no.2
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• pp.3-10
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• 2018

The existing smart grid, which is centered on the power grid, is rapidly spreading to new energy and renewable energy such as heat and gas, which are expressed as smart energy. Smart Energy interacts with electric energy and is connected to wired / wireless network based on IoT sensor based on energy analysis using AI to rapidly expand ecosystem with various energy carriers and customers. However, smart energy based on IoT is lacking in technological and institutional preparation for security compared to efforts to activate the market according to the interests of government and business operators. In this study, we will present Smart Energy 's privacy policy in terms of value system(CPND) of convergence ICT.

• Journal of the International Relations & Interdisciplinary Education
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• v.2 no.2
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• pp.1-8
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• 2022

In March 2021, the <Guidance on Promoting the Scientific Interface between Kindergarten and Elementary School> issued by the Ministry of Education of China clearly pointed out that it is necessary to adhere to child oriented. This goal of this policy is based on the idea of "living education" proposed by Mr. Heqin Chen in 1940, which indicates that a true understanding of children is necessary before talking about educating them. The core goal of "bidirectional articulation" is to strengthen the sense of articulation between kindergartens and elementary school, scientifically prepare for and adapt to school enrollment, and promote the smooth transition of children. Moreover, the <Guidance Points for Kindergarten Readiness Education> and the <Guidance Points for Elementary School Adaptation Education>, which were released at the same time as the <Guidance on Promoting the Scientific Interface between Kindergarten and Elementary School>, also place special emphasis on the cultivation of children's life preparation and adaptability. The aim of the bidirectional articulation "bridging" is to realize a two-way exchange of curriculum between kindergarten and elementary school, and to reform the curriculum at three levels through the curriculum spirit of "gamification", the continuous curriculum structure, and the developmental curriculum evaluation.