• The KIPS Transactions:PartD
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• v.11D no.1
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• pp.51-60
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• 2004

In open GIS environment, a GIS client can access spatial data in different types of GIS sowers with the same Interfaces. This means that open GIS components software ensures the interoperability throughout the heterogeneous GIS servers. The user response time, however, tends to be increased, if the client makes use of the standard interfaces for data accesses that can ensure interoperability. This is because the format of spatial data accessed from a specific GIS server must be transformed into common format, such as Rowset in OLE/DB, which is compatible with the standard interfaces. In this paper, we develop efficient techniques for data buffering in GIS client to reduce the response time. We design the buffer management method, which Is based on the space partitioning, and Integrate buffer management components into MapBase, an open GIS component software. And we also, show that buffer management proposed in this paper yields significant performance improvement in GIS client.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.28 no.5B
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• pp.414-426
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• 2003

XML is being used to describe components and applications in a vendor and language neutral. Therefore it already has a role in distributed system. XML is also being used as a data interchange format between components and applications in loosely coupled large-scale application. Until now, policy is described for specific applications and devices. Its use has been very limited. In current network management system, we can only invoke predefined operations and actions using policy-based network management. The main motivation for the recent interests in policy-based networks is to support dynamic adaptability of behavior by changing policy without recoding or stopping system. For these reasons we present the use of the XML for describing the policy and PIB(Policy Information Base) in COPS-PR. It improves flexibility and interoperability among heterogeneous network systems. It also can add new functionality into network components. In this paper, we propose a dynamically extensible network management architecture using XML-based PIB.

• Annals of Clinical Neurophysiology
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• v.6 no.2
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• pp.65-74
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• 2004

Limb-girdle muscular dystrophy (LGMD) is a heterogeneous group of inherited muscle disorders caused by the mutations of different genes encoding muscle proteins. In the past, when the molecular diagnostic techniques were not available, the subtypes of muscular dystrophies were classified by the pattern of muscle weakness and the mode of inheritance, and LGMD had been considered as a 'waste basket' of muscular dystrophy because many unrelated heterogeneous cases with 'limb-girdle' weakness were put into the category of LGMD. With the advent of molecular genetics at the end of the last century, it has been known that there are many subtypes of LGMD caused by the mutation of different genes, and now, LGMD is classified according to the results of the linkage analysis and the genes or proteins affected. Only small proportion (probably less than 10%) of LGMD is dominantly inherited, and autosomal dominant LGMD (AD-LGMD) consists of six subtypes (LGMD1A to 1F) so far. In autosomal recessive LGMD (AR-LGMD), more than 10 subtypes (LGMD2A to 2J) have been linked and most of the causative genes have been identified. Among AR-LGMDs, LGMD2A (calpain 3 deficiency), 2B (dysferlin deficiency), and sarcoglycanopathy (LGMD2C-2F) are major subtypes. The defective proteins in LGMDs are components of nuclear envelope, cytosol, sarcomere, or sarcolemma, and seem to play a different role in the pathogenesis of muscular dystrophy. It is notable that many causative genes of LGMDs are also responsible for other categories of muscular dystrophy or diseases affecting other tissue. However, by which mechanism they produce such a broad phenotypic variability is still unknown. The identification of mutation in the relevant gene is confirmative for the diagnosis, and is essential for genetic counseling and antenatal diagnosis of LGMD. Because many different genes are responsible for LGMD, differentiation of subtypes using immunohistochemistry and western blotting is the essential step toward the detection of mutation. For the effective research and medical care of the patients with muscular dystrophy in Korea, a research center with a medical facility supported by the government seems to be needed.

• Proceedings of the Korean Society for Technology of Plasticity Conference
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• 2003.10a
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• pp.301-301
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• 2003

In current study, Nanocomposites are reinforced with carbon nanofiber, carbon nanotube and SiC, etc. Since the nano reinforcements have the excellent mechanical, thermal and electrical properties compared with that of existing composites, it has lately attracted considerable attention in the various areas. Cu have been widely used as signal transmission materials for electrical electronic components owing to its high electrical conductivity. However, it's size have been limited to small ones due to its poor mechanical properties. Until now, strengthening of the copper alloy was obtained either by the solid solution and precipitation hardening by adding alloy elements or the work hardening by deformation process. Adding the alloy elements lead to reduction of electrical conductivity. In this aspect, if carbon nanofiber is used as reinforcement which have outstanding mechanical strength and electric conductivity, it is possible to develope Cu matrix nanocomposite having almost no loss of electric conductivity. It is expected to be innovative in electric conducting material market. The unidirectional alignment of carbon nanofiber is the most challenging task developing the cooer matrix composites of high strength and electric conductivity. In this study, the unidirectional alignment of carbon nanofibers which is used reinforced material are controlled by drawing process and align mechanism as well as optimized drawing process parameter are verified via numerical analysis. The materials used in this study were pure copper and the nanofibers of 150nm in diameter and of 10∼20$\mu\textrm{m}$ in length. The materials have been tested and the tensile strength was 75MPa with the elongation of 44% for the copper. it is assumed that carbon nanofiber behave like porous elasto-plastic materials. Compaction test was conducted to obtain constitutive properties of carbon nanofiber Optimal parameter for drawing process was obtained by analytical and numerical analysis considering the various drawing angles, reduction areas, friction coefficient, etc. The lower drawing angles and lower reduction areas provides the less rupture of co tube is noticed during the drawing process and the better alignment of carbon nanofiber is obtained.

• Journal of Information Management
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• v.32 no.1
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• pp.50-70
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• 2001

As todays's networks are typically heterogeneous and very often comprised of multi-platform, multi-vendor network components, mobile agents have been proposed as a solution to the problem of the management of increasingly heterogeneous networks. Mobile agents are no longer statically resident on managed devices for network management: in contrast, they are migratory, replaceable at any time as necessary, and may be equipped with mini expert systems which can diagnose and fix networks' faults on behalf of the manager. Therefore, in this paper, the MIB browsing facilities for network management using the JAMAS and mobile agents are implemented. That is, the network manager accesses the MIB information through mobile agents with which communicate the SNMP agent of each of managed devices. The implementation performance is also evaluated.

• Journal of Internet Computing and Services
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• v.10 no.1
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• pp.19-31
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• 2009

Network management involves configuring and operating various network elements in a suitable manner. Generally, a network management system can perform basic functionalities such as configuration management, performance management, and fault management. Due to the open structure of the Internet, the volume of network traffic and the network equipment used have increased in size and complexity. Therefore, it is expensive and time consuming to develop a network management program for heterogeneous network equipment in an SNMP.based network. In order to facilitate the management of network environments and the control of heterogeneous devices in an efficient manner, we propose an Active Network Management System (ANMS) comprising an automatic generator that uses triggers to generate a network management program. The concept of triggers can be represented through event condition action rules performed in response to a change in the status of a network environment. The proposed ANMS comprises basic components for real time network management and also includes an automatic generator (AG). When the ANMS is monitoring network elements that are newly added or changed, a trigger rule is activated and these components are then able to collaborate and automatically generate a new network management program by using the information provided along with the SNMP libraries. Our method is useful for expanding the network structure and replacing network equipment. Through experiments, we have proved that our ANMS is useful when new network objects are added or changed in the network environment to expand the network structure. Further, we have verified that our ANMS system reduces the time and cost required to develop a network management program as compared to the manual method used in existing network management systems.

• Korean Journal of Social Welfare Studies
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• v.49 no.3
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• pp.247-275
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• 2018

In the absence of a research study on meta-analysis in terms of program development, the purpose of the study is to analyze the contents of the meta-analysis research studies which has been conducted for 18 years, and is to identify the level of program component evidence for the development of social work program. In order to achieve these purposes, the study analyzed the feature and usefulness of the 110 meta-analysis studies(5,781 program evaluation studies)published from 2010 to June 2017 in major academic journals related to the areas of the social welfare, psychology, counseling and health. The major findings are as follows. The 110 meta-analysis studies tended to narrow down the scope of the population, problems, and program types, but they also included a lot of heterogeneous types. In the statistical methods, there were relatively few studies to explain the factors behind the heterogeneity of program effectiveness. In addition, researchers tended to select program components arbitrarily with bias on specific components. The important program components with the statistical validity are as follows; the age of the subjects, the severity of the problem, the expertise of the providers, and the strength and activities of the intervention, The academic meanings of the study results was discussed, and the direction of future research was presented to increase the usefulness of the metaanalysis for program development.

• Polymer(Korea)
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• v.29 no.3
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• pp.221-230
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• 2005

Interfacial interactions and interphases played a key role in multicomponent materials irrespectively of the number and type of their components or their actual structure. They were equally important in particulate filled polymer, polymer blends, fibers-reinforced advanced composites, nanocomposites or biomimetic materials. Recognition of the role of the main factors influencing interfacial adhesion and proper surface modification could lead to significant progress in many fields of research and development, as well as in related technologies. Although the role and importance of interfaces and interphases were the same for all multicomponent materials, the surface modification could be always selected according to the objectives targeted, as well as to the characteristics of the particular system. In this wort therefore, several types of surface modification were performed to improve the interfacial interactions between two components in composite system and their results for the composites were investigated.

• Journal of KIISE:Computing Practices and Letters
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• v.14 no.7
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• pp.646-656
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• 2008

In this paper, the prototype of haptic-based NVE (networked virtual environment) QoE (quality of experience) is proposed. The proposed framework plays a role of providing users with realistic feeling by managing the system and network resources efficiently under time-varying networks and heterogeneous systems. Therefore, first IoPH (importance of presence for haptic interaction) is defined to quantitate the sense of real that the users feel now. Then we define the haptic-based NVE components required to satisfy the haptic interaction QoE requirements. Finally, QoE adaptation scheme is suggested, which adapts the haptic-based NVE components to current network and system constraints for better haptic interaction quality.

• Journal of the Society of Naval Architects of Korea
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• v.41 no.6
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• pp.126-133
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• 2004

As the automation of ship production system proliferates, it is unavoidable to move the real machinery, facility, application software, and virtual environment from the heterogeneous data environment to the integrated one. However, it is a prevailing situation that each component operates under the different environment, due to the inability of interchanging the data in a structured manner between the components. The issue is obstacles to improvement of the application system. To facilitate seamless exchange of data among the manufacturing systems, STEP, PDML, and XML has been tried by other studies. This study has investigated how XML data can be applied to exchange the data among the ship production system components. XML data is applied to the forming shop in shipyard to overcome the present difficulties on sharing and exchanging of the information. An example of forming information is represented by XML to demonstrate the feasibility of the proposed approach. In addition, an application of XML information applicable to virtual factory and electronic work order sheet is included.