• Journal of Information Technology Services
• /
• v.15 no.1
• /
• pp.131-152
• /
• 2016

Group social capital can be defined as an intangible asset that promotes knowledge sharing and social interaction. It is posited here that the group social capital raised and nurtured among group members positively influences on team performance in IS (Information Systems) development projects. And communication effectiveness is selected as a critical antecedent and its detailed relationships with the dimensions of group social capital are analyzed. Effective communication plays important role in ISD project teams by integrating knowledge from different areas. Moderating effects of project phase between the sub-dimensions of social capital and project performance are investigated. Hypotheses are tested using data from 131 project teams of 85 manufacturing firms. The results indicated that Communication effectiveness positively impacted sub-dimensions of social capital (social ties, trust, and shared vision). Moreover, the team performance is influenced by shared vision and trust, leaving social ties as a leading subcontract, as theoretically proposed in prior research. The project phase moderates the impact of shared vision on team performance.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2004.05b
• /
• pp.760-763
• /
• 2004

We propose a biometrical information security method based on Optical Visual Cryptography in that a fingerprint data is processed by Secret Sharing method taking into account the Optical Visual Cryptography and a part of shared data transmitted through an open network. Whenever necessary the owner or the fingerprint can be authenticated by submitting his fingerprint with the other shared information.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.14 no.3
• /
• pp.684-690
• /
• 2010

Most of the existing SoCs have shared bus architecture which always has a bottleneck state. The more IPs are in an SOC, the less performance it is of the SOC, Therefore, its performance is effected by the entire communication rather than CPU speed. In this paper, we propose cross-bar switch bus architecture for the reduction of the bottleneck state and the improvement of the performance. The cross-bar switch bus supports up to 8 masters and 16 slaves and parallel communication with architecture of multiple channel bus. Each slave has an arbiter which stores priority information about masters. So, it prevents only one master occupying one slave and supports efficient communication. We compared WISHBONE on-chip shared bus architecture with crossbar switch bus architecture of the SOC platform, which consists of an OpenRISC processor, a VGA/LCD controller, an AC97 controller, a debug interface, a memory interface, and the performance improved by 26.58% than the previous shared bus.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
• /
• v.8 no.2
• /
• pp.1-10
• /
• 2013

Porter(2011)'s CSV(Creating Shared Value) is a more strategically advanced perspective of CSR(Corporate Social Responsibility). CSV creates corporates' value by exploiting the firms' own core competence and social value of the stakeholders in the community such firms simultaneously belong to. In this points of view, CSV is more appropriate for the principles of capitalism than CSR. A case study on food producing firms that adopted the concept of CSV to their business management was conducted. Considering the characteristics of food industry, the researchers have investigate many existing cases, especially focused on the CSV activities toward rural area and agriculture. As result of the case analysis, the 'mutual firm-establishing-CSV,' which refers to the new organization established on the point of contact where corporate value and social value meet, was observed. The aspects of establishing a new organization by firms' collaborating with rural area and agriculture is different in accordance with each firm's method of creating shared value. However, the cases have common grounds that the created value is for pursuing both firms' and stakeholders' value. This study is significant, in that the study deducts implications about accompanied growth and win-win management by suggesting the establishment of firms based on CSV.

• The KIPS Transactions:PartC
• /
• v.11C no.2
• /
• pp.253-262
• /
• 2004

In this paper, a session allocation algorithm for a switch with multiple shared links is proposed. The algorithm guarantees the reserved bandwidth to each service class and keeps the delay of sessions belonging to a service class as close as possible even if the sessionsare allocated to different shared links. To support these qualities of services, a new scheduling model for multiple shared links is defined and a session allocation algorithm to decide a shared link to be allocated to a new session on the connection establishmentis developed based on the model. The proposed heuristic algorithm allocates a session to a link including the subclass with the shortest (expected) delay that subclasses of the service class the session belongs to will experience. Simulation results verify that a switch with multiple shared links hiring the proposed algorithm provides service classes with fairer bandwidth allocation and higher throughput, and guarantees reserved bandwidth better than the switch hiring other session algorithms. It also guarantees very similarservice delay to the sessions in the same service class.

• KIISE Transactions on Computing Practices
• /
• v.22 no.11
• /
• pp.601-613
• /
• 2016

With the increasing need for big data processing, building a shared big data processing platform is important to minimize time and monetary costs. In shared big data processing, multitenancy is a major requirement that needs to be addressed, in order to provide a single isolated personal big data platform for each user, but to share the underlying hardware is shared among users to increase hardware utilization. In this paper, we explore two well-known shared big data processing platform models. One is to use a native Hadoop cluster, and the other is to build a virtual Hadoop cluster for each user. For each model we verified whether it is sufficient to support multi-tenancy. We also present a method to complement unsupported multi-tenancy features in a native Hadoop cluster model. Lastly we built prototype platforms and compared the performance of both models.

• Journal of KIISE:Computer Systems and Theory
• /
• v.29 no.5
• /
• pp.257-264
• /
• 2002

In this paper, we give a detailed description of KDSM(KAIST Distributed Shared Memory) system. KDSM is implemented as a user-level library running on Linux 2.2.13, and TCP/IP is used for communication. KDSM uses page-based invalidation protocol, multiple-writer protocol, and supports HLRC(Home-based Lazy Release Consistency) memory consistency model. To evaluate performance of KDSM, we executed 4 scientific applications and compared the result to JLAJLA. The results showed that performance of KDSM almost equal to JIAJIA for 2 applications and performance of KDSM is better than JIAJIA for 2 applications.

• Journal of KIISE:Computer Systems and Theory
• /
• v.31 no.12
• /
• pp.716-725
• /
• 2004

It is extremely important to minimize network access time in constructing a high-performance PC cluster system. For PC cluster systems, it is possible to reduce network access time by maintaining network cache in each cluster node. This paper presents a Network Cache Coherent NUMA (NCC-NUMA) system to utilize network cache by locating shared memory on the PCI bus, and the NCC-NUMA card which is core module of the NCC-NUMA system is developed. The NCC-NUMA card is directly plugged into the PCI slot of each node, and contains shared memory, network cache, shared memory control module and network control module. The network cache is maintained for the shared memory on the PCI bus of cluster nodes. The coherency mechanism between the network cache and the shared memory is based on the IEEE SCI standard. According to the SPLASH-2 benchmark experiments, the NCC-NUMA system showed improvements of 56% compared with an SCI-based cluster without network cache.

• Journal of KIISE:Computer Systems and Theory
• /
• v.30 no.7_8
• /
• pp.341-351
• /
• 2003

For debugging effectively the shared-memory programs with nested parallelism, it is important to detect efficiently the first races which incur non-deterministic executions of the programs. Previous on-the-fly technique detects the first races in two passes, and shows inefficiencies both in execution time and memory space because the size of an access history for each shared variable depends on the maximum parallelism of program. This paper proposes a new on-the-fly technique to detect the first races in two passes, which is constant in both the number of event comparisons and the space complexity on each access to shared variable because the size of an access history for each shared variable is a small constant. This technique therefore makes on-the-fly race detection more efficient and practical for debugging shared-memory programs with nested parallelism.

• Journal of the Korea Convergence Society
• /
• v.10 no.7
• /
• pp.183-189
• /
• 2019

The change to the horizontal structure of the modern corporate management environment requires joint efforts and cooperation to share responsibility and purpose and to increase positive mutual influence in order to achieve the corporate goal beyond the individual capacity of the organizational members. In order to achieve the purpose of the organization, the organizational structure in which various members share information and aim at collective leadership is more effective than the structure concentrated on one individual (leader). This study was to examine the effectiveness of shared leadership, and to investigate the causal relationship and effect of shared leadership, organizational trust, and job performance. As a result of the analysis, shared leadership had a positive effect on organizational trust, and organizational trust had a positive effect on job performance. This means that high trust in organization has a positive effect on performance.This study is meaningful in that it examines the difference between shared leadership and existing leadership types that have not been studied yet.