• Title/Summary/Keyword: Key Management Mechanism

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Current States of Sibling Researches in America (미국 동기관계연구의 최근동향 - 기본인식과 접근방법-)

  • 박영애
    • Journal of Families and Better Life
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    • v.8 no.2
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    • pp.147-162
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    • 1990
  • The purpose of this review is to establish a groundwork for building a more comprehensive conceptual framework within which various aspects of sibling relations and factor related to sibling behaviors con be explained and integrated. Descriptions of the trends and shifts in sibling studies are made in terms of their themes, variables, basic perceptions and general approaches, and analyzes of current state of sibling researches are made with relation to the conceptual aspects of the studies, namely, their standpoints on the issues of sibling variations, the sources of variations, and basic units of analysis, their reliance or emphasis on different methods, and their interests in the mediation processes. It is recognized that research variables have been successively differentiated and used in diversified manners and family ecology and systems theory viewpoints have been incorporated into the understanding of sibling relations. A triad in its full meaning, rather than a dyad or a partial trial, is proposed as a unit of analysis in order for the researchers to be able to examine and describe the true interactional aspects of family relations involving sibling relations. The concepts of coexistence and interaction are proposed as key concepts os that the inconsistencies in findings, differing viewpoints, contradicting conceptions , and contrasting approaches can be interpreted and integrated into a unified system of theories on siblings. The coexistence of similarities and differences in reality. the inevitability of interaction between individual variables and environmental variables and between within-family environmental factors and our-of-family environmental factors, and the need for the joint use of intrafamilial and extrafamilial approach are acknowledged. Attention is also drawn to the mechanism characteristics and the directionality of the mediating processes of mediating variables between a variable and its effects.

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A Short Review on the Mechanical and Thermal Processes for Underwater Cutting of Metal Structures (금속 구조물의 수중 절단을 위한 기계적 열적 공정의 특징 분석)

  • Mun, Do Yeong;Cho, Young Tae
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.19 no.1
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    • pp.121-133
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    • 2020
  • Underwater cutting has a different mechanism than dry cutting, and there are more restrictions than benefits. Due to these constraints, research and development of underwater cutting has been very limited. At present, reactor dismantling is emerging as an important task worldwide, and reactor pressure containers, a key part of the reactor, are decommissioned based on underwater cutting. Reactor pressure containers are high-level radioactive waste, which is one of the main goals of today, such as to bridge the gap between environmental, safety, and cutting performance; hence, a process suitable for cutting should be applied. Therefore, many studies are being conducted on underwater cutting in connection with the dismantling of nuclear reactors in various areas in order to find appropriate processes. This paper first introduces the core technology of underwater cutting processes and discusses various processes. The emphasis is then placed on the adequacy of the reactor dismantling application. More specifically, we examine the suitability for the mechanical and thermal cutting processes, respectively, to find a solution suitable for dismantling a reactor. We discuss how each solution can sufficiently perform the specified functions at each stage of reactor dismantling and suggest that these processes can perform all of the work of underwater cutting.

Effective Management Method of the GeoContents using Differences (상이점을 이용한 GeoContents의 효율적인 관리 방법)

  • Park, Sun-Rae;Kim, Jae-Chul;Lee, Kyu-Chul
    • Journal of Korea Spatial Information System Society
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    • v.11 no.4
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    • pp.65-73
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    • 2009
  • With the rapid development of computer, information and communication technologies, the production and distribution of digital contents among various kinds of networks have become more common. In such environment, we need to store and to manage efficiently a large volume of geograpruc data because the amount of geographic data grows faster and faster. In this paper, as a key solution to manage efficiently such a huge amount of geograpruc data, we adopt the mechanism which compresses only the difference between original and updated data with high compression ratio. By transferring highly compressed updated part only instead of the entire of geographic data, we can reduce the network traffic during the download of contents and service.

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Validating Twin Deficit Hypothesis: The Zambian Case

  • Mahuni, Kenneth
    • Asia Pacific Journal of Business Review
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    • v.1 no.2
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    • pp.1-16
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    • 2017
  • The fundamental goal of the research was to verify if the Twin Deficits Hypothesis holds for the economy of Zambia using time series data from 1980-2014. The current account and budget deficit were employed as key variables. The exchange rate was also used as a transmission mechanism to see how it contributes in the nexus. Cointegration tests confirmed a long run association of the variables. After fitting the VECM model, Granger causality tests confirmed the existence of twin deficits for Zambia. The results supported uni-directional reverse causality. The exchange rate was shown to be more significant in the long run than in the short run. The implosion of the time series as shown by the predicted cointegration equation implies that unless drastic measures are taken to cure the deficits, using the current account as the major target variable, twin deficits will persist for some time. The major policy implication of this research is that given that Zambia is a primary commodity-dependent developing country subsisting largely on copper revenues to sustain the economy, there is a need to move away from "copper addiction," given the recent volatility of earnings of primary commodities (e.g. through diversification of the economy, import substitution, and other strategies).

The Product Supply Process Design for Fast Fashion Industry with BPMN (패스트 패션의 상품 공급 프로세스 설계에 관한 연구)

  • Park, Hyun-Sung;Park, Kwang-Ho
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.34 no.3
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    • pp.134-146
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    • 2011
  • This paper suggests the product supply process model based on the store and production capacity, assortment planning and quick response for fast fashion retailers with BPMN. In the fast fashion industry, the standardized business process model is required to respond quickly market trends and customer requirements based on the quantitative and qualitative criteria. Thus we define the product supply processes which incorporate forecasting and assortment plan, cost and profitability of the production, store capacity based on the visual merchandising, and production capacity of the fast fashion retailers. Also we design the key performance indicators to evaluate the effectiveness of these product supply processes. The product supply process model for the fast fashion has great significance in embracing the fast fashion product development process because it presents the holistic view of the product supply process of the fast fashion and provides a performance evaluation mechanism. A case study shows that adopting the processes, a Korean fast fashion company achieves improvement in various performance indicators.

THREE-DIMENSIONAL CORE DESIGN OF A SUPER FAST REACTOR WITH A HIGH POWER DENSITY

  • Cao, Liangzhi;Oka, Yoshiaki;Ishiwatari, Yuki;Ikejiri, Satoshi;Ju, Haitao
    • Nuclear Engineering and Technology
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    • v.42 no.1
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    • pp.47-54
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    • 2010
  • The SuperCritical Water-cooled Reactor (SCWR) pursues high power density to reduce its capital cost. The fast spectrum SCWR, called a super fast reactor, can be designed with a higher power density than thermal spectrum SCWR. The mechanism of increasing the average power density of the super fast reactor is studied theoretically and numerically. Some key parameters affecting the average power density, including fuel pin outer diameter, fuel pitch, power peaking factor, and the fraction of seed assemblies, are analyzed and optimized to achieve a more compact core. Based on those sensitivity analyses, a compact super fast reactor is successfully designed with an average power density of 294.8 W/$cm^3$. The core characteristics are analyzed by using three-dimensional neutronics/thermal-hydraulics coupling method. Numerical results show that all of the design criteria and goals are satisfied.

Key Success Factors of Home-Based Business among Female Entrepreneur in Saudi Arabia

  • bin Dahari, Zainurin;Abu Bakar, Abdul Rahim;Al-Gosaibi, Sahar
    • Asia Pacific Journal of Business Review
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    • v.3 no.2
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    • pp.43-66
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    • 2019
  • Home-based business (HBB) is one of the fastest growing form of business start-ups where the business is conducted from home. In develop economies, the HBB industry is an engine for economic growth that has proven its viability through significant contribution to the national GDP. In view of its importance, the Saudi Ministry of Commerce and Industry encourage local women to start and develop their own HBB as it gives them the flexibility while still contributing to the national economy. Although various initiatives have been taken place, little information is available about Saudi HBB. This study therefore aims to determine the factors that contribute to the growth as well as the challenges of female HBB in Saudi Arabia. The study was based on qualitative approach which adopted an in-depth interview with eleven Saudi females who run HBB. The findings revealed that HBB contributing factors comprised of access to funding, sufficiency of savings and the influence of the intrinsic and extrinsic motivation in starting the business. Meanwhile, the obstacles are government regulations and policies, culture, and home design. The study recommendations include improving banks and service institution policy and procedures to enable HBB to have access to funding and services and to develop legal policies to protect the right of the HBB operator and customers. Finally, the study also suggests future research on managerial factors that can contribute to HBB female success, the stress coping mechanism of HBB and the factors contributing to the difference between HBB in growth strategies.

A Rule Protecting Scheme with Symmetric Cryptosystem for Intrusion Detection System (암호화 기법을 적용한 침입 탐지 시스템의 룰 보호 기법)

  • Son Hyung-Seo;Kim Hyun-Sung;Bu Ki-Dong
    • Journal of the Korea Institute of Information Security & Cryptology
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    • v.14 no.6
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    • pp.3-13
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    • 2004
  • Kvarnstrom et al. ${in}^{[10]}$ proposed a rule protection scheme by using one-way hash function to protect rules in security systems over ubiquitous environment. Son et at. ${in}^{[5-6]}$ also prooposed a rule protection scheme for Snort, which is one of the most common IDS. These schemes provide security only for the header information but not for its contents. To solve this problem, this paper presents a scheme based on the symmetric cryptosystem over Snort not only for the header information but also contents. This paper uses the key management based on PCMCIA security module proposed ${by}^{[12]}$ for the symmetric cryptosystem. Our scheme could be adjusted to other security systems, which use the rule based detection.

Features of the Impact of Social and Digital Changes on the System of Government Regulation of Banking Activity

  • Zalutska, Khrystyna;Pasichnyk, Vаsyl;Smolinska, Natalia;Grybyk, Igor;Antonova, Liudmyla
    • International Journal of Computer Science & Network Security
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    • v.22 no.4
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    • pp.217-222
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    • 2022
  • The main purpose of the article is to study the features of the impact of social and digital changes on the system of government regulation of banking acitivity. The digital economy sets the vector along which socio-economic systems of micro-, meso-, macro-levels will develop in the long term, which necessitates research and a comprehensive analysis of digital transformation processes. Once a priority for individual innovative companies, today digital transformation has become a mass phenomenon, and the corresponding projects are vital for the success of not only individual companies, but also regions and countries. At the same time, this transformation itself is closely connected with the trend of servicing socio-economic systems and is largely implemented on its basis. Moreover, this relationship and the mechanism for its implementation remain insufficiently studied, which necessitates the development of tools for its identification, assessment and management. As a result of the analysis, the key aspects of the impact of social and digital changes on the system of state regulation of banking activities were identified.

Methods of Regulating Migration Processes in EU Countries

  • Hamova, Oksana;Dergach, Anna;Pikulyk, Oksana;Zolotykh, Irina;Diachenko, Kateryna
    • International Journal of Computer Science & Network Security
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    • v.21 no.3
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    • pp.257-265
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    • 2021
  • Modern methods of regulating migration processes in EU states include a wide variety of adapted, transformed under the sway of globalization tools in order to influence the movement of human capital within the European space. The main purpose of the regulatory policy on migration flows is the redistribution of professionally competent professionals between different spheres of life. Herewith, the determining factor in the effectiveness of such distribution is a rational combination of stimulating and disincentive levers of influence on the movement of citizens of different EU countries and taking into account the motives of such mobility. Modernization of migration management approaches can be a major economic, social, political and cultural progress of European countries. The purpose of the research is to conduct a detailed analysis of existing practices of migration flow management, in particular their stimulation or containment, and to outline key migration trends formed under the influence of multicomponent approaches to migration regulation, transformation of regulatory legislation and changing priorities of modern society. The research methods: statistical-analytical method; ARIS method; method of tabular, graphical and analytical modeling; comparative analysis; systematization, generalization. Results. Current pan-European methods of regulating migration processes are insufficiently adapted to the multinational socialeconomic space; consequently, there are some disparities in the distribution of migrants between EU countries, although the overall dynamics of migration is positive. Fluctuations in the population of European countries during 2000-2019 and trends in the transformation of social-economic space confirm the insufficient level of influence of current methods of regulating migration flows. Along with this, the presence of a characteristic asymmetry in the distribution of migrants requires a greater focus on the modernization of regulatory instruments, in particular, the regulatory mechanism for managing migration processes. As a result of the conducted study, further prospects for the implementation of alternative methods of regulating migration processes in EU states have been outlined; the current and projected limits for increasing the level of observance of migrants' rights at the European level have been clarified through the adoption of appropriate regulatory acts; effective solutions for intensifying the influx of high-quality labor resources from different countries to EU have been identified. The research results can be used to study methods of regulating migration processes in the countries in the global dimension.