• KSII Transactions on Internet and Information Systems (TIIS)
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• v.8 no.10
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• pp.3378-3393
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• 2014

We have witnessed the rapid development of information technology in recent years. One of the key phenomena is the fast, near-exponential increase of data. Consequently, most of the traditional data classification methods fail to meet the dynamic and real-time demands of today's data processing and analyzing needs--especially for continuous data streams. This paper proposes an improved incremental learning algorithm for a large-scale data stream, which is based on SVM (Support Vector Machine) and is named DS-IILS. The DS-IILS takes the load condition of the entire system and the node performance into consideration to improve efficiency. The threshold of the distance to the optimal separating hyperplane is given in the DS-IILS algorithm. The samples of the history sample set and the incremental sample set that are within the scope of the threshold are all reserved. These reserved samples are treated as the training sample set. To design a more accurate classifier, the effects of the data volumes of the history sample set and the incremental sample set are handled by weighted processing. Finally, the algorithm is implemented in a cloud computing system and is applied to study user behaviors. The results of the experiment are provided and compared with other incremental learning algorithms. The results show that the DS-IILS can improve training efficiency and guarantee relatively high classification accuracy at the same time, which is consistent with the theoretical analysis.

• Proceedings of the Korean Vacuum Society Conference
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• 2007.02a
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• pp.88-88
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• 2007

• Journal of Information Science Theory and Practice
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• v.10 no.spc
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• pp.123-134
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• 2022

Existing network cryptography systems are threatened by recent developments in quantum computing. For example, the Shor algorithm, which can be run on a quantum computer, is capable of overriding public key-based network cryptography systems in a short time. Therefore, research on new cryptography systems is actively being conducted. The most powerful cryptography systems are quantum key distribution (QKD) and post quantum cryptograph (PQC) systems; in this study, a network based on both QKD and PQC is proposed, along with a quantum key management system (QKMS) and a Q-controller to efficiently operate the network. The proposed quantum cryptography communication network uses QKD as its backbone, and replaces QKD with PQC at the user end to overcome the shortcomings of QKD. This paper presents the functional requirements of QKMS and Q-Controller, which can be utilized to perform efficient network resource management.

• Proceedings of the IEEK Conference
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• 2004.06a
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• pp.229-232
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• 2004

With the internet(World Wide Web) widespread among people after 1995, Information Communication Network, which is basic structure of the internet, is rapidly changing into fiber optics communication. Voice-centered Circuit Traffic is rapidly changing into Internet-centered Packet Traffic and Optics Communication Technology can transmit 1Tb/s thousands kilometers away. The information conveyed through the internet is being diversified - from simple information based on text to bulky multimedia information such as auido & video data. So the demand for higher speed, high storage Router is on the crease. With the continued increase of Internet Traffic, Router for Core Backbone System will be much more needed.

• Proceedings of the Korea Information Processing Society Conference
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• 2003.11c
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• pp.1437-1440
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• 2003

의사결정지원시스템으로서의 DW는 기업정보시스템에서 두뇌역할을 담당하는 만큼 전략적 중요도에 있어서 매우 중요한 역할을 차지하고 있다. 이러한 추세와 더불어 많은 기업들이 DW구축에 엄청난 예산을 투입하여 시스템을 구축하지만 프로젝트의 실패 역시 흔하게 찾아 볼 수 있는 사실이다. 이러한 실패의 주요인은 기술적인 문제에서 발생하기 보다는 낮은 시스템 활용도와 명확하지 않은 분석요구사항에서 주요원인을 찾아 볼 수 있는데 이는 구축단계에서 이용자와 이해관계자들이 DW의 시스템적 목적을 제대로 이해하지 못하여 사용자 관점의 요구사항을 제대로 제시하지 못하고 이에 따라 시스템의 활용도 역시 낮아지는 데에서 본질적인 원인을 찾을 수 있다. 본 논문에서는 시스템의 사용자가 요구사항을 적극적으로 제시하고 시스템에 끊임없는 관심을 같도록 유도하여 이용자의 요구사항을 충족시킨 수 있는 정확한 주제분야와 분석관점을 발굴함과 통시에 시스템의 활용도를 높이기 위한 방안으로 정형화되고 주기적인 분석정보를 제시하기 위하여 정적 Reporting을 위한 Web Reporting Tool과 함께 시스템의 이용자와 주기적으로 Communication을 유지하여 시스템에 지속적으로 관심을 갖도록 하기 위한 상호 Communication기능을 통한 문제의 해결방안을 제시하고자 한다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.19 no.9
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• pp.2100-2106
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• 2015

Recently, we are increasing an interest of the health care from the developing elderly society. The need for the safety standardization is the High-tech industry that the technology of Medical science based on advanced nations with the wireless communication technology. It is urgent matter the chronic disease that is growing the total costs is everyday increased. We consider the standardization of the monitoring the medical examination based on the medical science environment with wireless communication technology. In addition, we make the environment of the powerful nation based on medical / patient care technology for the supporting of the high quality service. In this paper, we focus on description of the relationship that convergence of the medical / patient care science is need the component based on wireless communication technology.

• Journal of Distribution Science
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• v.22 no.9
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• pp.129-139
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• 2024

Purpose: This research aims to examine the impact of social media marketing on buy decisions in Indonesia's B2B market, considering the mediating roles of brand image, perceived quality, and perceived value in relation to interactive flat panel display technology. To better understand technology adoption and distribution, we utilize the innovation diffusion theory. Research Design, Data and Methodology: The Decision-Making Unit of each organization that buy interactive flat panel display technology conducted an empirical survey of 82 participants. The quantitative research design analyzed the data utilizing the PLS-SEM model. outcome: This research reveals that social media marketing significantly impacted perceived quality, brand image, perceived value, and buy decisions. The research also found that perceived quality does not significantly impact buy decisions, but perceived value and brand image significantly impacted buy decisions. This research contributes to understanding the key factorsinfluencing buy decisionsin Indonesia's B2B market. Conclusion: Thisresearch concludesthat B2B consumers in Indonesia are less concerned about product quality but prioritize the value they receive when purchasing interactive display technology. Social media marketing could impacted the distribution of interactive display technology in Indonesia's B2B market by affecting the DMU's purchasing decisions. Brandsshould leverage social media marketing to positively impact theirsuccess.

• Journal of Korean Association for Spatial Structures
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• v.17 no.4
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• pp.93-102
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• 2017

Wireless MEMS sensors have common features such as wireless communication, data measurement, embedded processing, battery-based self-power, and low cost, and increased measurement effectiveness. Wireless MEMS sensors enable efficient SHM without interfering with location because there is no requirement for triboelectric noise and cumbersome cables. However, there is little research on the communication distance with sensors and data. For instance, existing researches have limited communication distance experiments in civil engineering bridges. It is also necessary to investigate the characteristics of dynamic behavior and the communication distance of architectural structures with different wireless transmission/reception environments. Therefore, in a building structure with walls and slabs instead of open spaces, MEMS sensors and data loggers were used as distance experiments where communication disturbance between the vertical slab and the horizontal wall could actually be communicated.

• Journal of Advanced Navigation Technology
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• v.23 no.1
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• pp.61-68
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• 2019

Underwater wireless light communication system is quite necessary to retrieve recorded data from underwater devices or the black box without taking back it body. In this paper, a research on the light sensor technology in underwater wireless light communication under turbid sea was studied. A noise source under turbid sea for light communication was analysed, and a sensor system for light sensing using the reference light signal to remove the noises and to improve the output swing power wasstudied. Also, an underwater communication system was manufactured to validate the good performance of the development system, and using the system, the good performance of the developed system was validated through the light communication test in the tank containing the turbid sea water was presented.

• IEIE Transactions on Smart Processing and Computing
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• v.5 no.2
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• pp.85-93
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• 2016

The existence of correlation characteristics brings significant potential advantages to the development of efficient routing protocols in wireless sensor networks. This research proposes a new simple method of clustering sensor nodes into correlation groups in multiple-correlation areas. At first, the evaluation of joint entropy for multiple-sensed data is considered. Based on the evaluation, the definition of correlation region, based on entropy theory, is proposed. Following that, a correlation clustering scheme with less computation is developed. The results are validated with a real data set.