• Information Systems Review
• /
• v.11 no.3
• /
• pp.107-123
• /
• 2009

In this paper, we review digital certificate technologies and their applications in e-commerce. Current digital certificate technologies are evaluated and their importance is explained. The configuration of certificate flows from providers to users through software, hardware, and network technologies is described. These five domains and the configuration of digital certificate flows guide our review of the characteristics of digital certificates. We then develop a framework for the classification of digital certificates that integrate these five domains with VeriSign's types and levels of assurance. In order to demonstrate the adequacy of our digital certificate classification framework, we populated it with VeriSign's digital certificates. Within each domain, VeriSign's classes of digital certificates are classified in accordance with the VeriSign type and level of assurance. The results of our analysis suggest that the framework is a useful step in developing a taxonomy of digital certificate technologies. The strengths and weaknesses of the study are discussed, and opportunities for further research are identified and discussed.

• Electronics and Telecommunications Trends
• /
• v.33 no.6
• /
• pp.12-23
• /
• 2018

In this paper, we review the technical trends of diamond and gallium oxide ($Ga_2O_3$) semiconductor technologies among ultra-wide bandgap semiconductor technologies for harsh environments. Diamond exhibits some of the most extreme physical properties such as a wide bandgap, high breakdown field, high electron mobility, and high thermal conductivity, yet its practical use in harsh environments has been limited owing to its scarcity, expense, and small-sized substrate. In addition, the difficulty of n-type doping through ion implantation into diamond is an obstacle to the normally-off operation of transistors. $Ga_2O_3$ also has material properties such as a wide bandgap, high breakdown field, and high working temperature superior to that of silicon, gallium arsenide, gallium nitride, silicon carbide, and so on. In addition, $Ga_2O_3$ bulk crystal growth has developed dramatically. Although the bulk growth is still relatively immature, a 2-inch substrate can already be purchased, whereas 4- and 6-inch substrates are currently under development. Owing to the rapid development of $Ga_2O_3$ bulk and epitaxy growth, device results have quickly followed. We look briefly into diamond and $Ga_2O_3$ semiconductor devices and epitaxy results that can be applied to harsh environments.

• Magazine of the Korea Concrete Institute
• /
• v.25 no.3
• /
• pp.57-60
• /
• 2013

• Genomics & Informatics
• /
• v.19 no.3
• /
• pp.20.1-20.2
• /
• 2021

• Earthquakes and Structures
• /
• v.18 no.1
• /
• pp.57-72
• /
• 2020

This paper presents the results of a monodirectional shaking table test on a full-scale unreinforced masonry cross vault characterized by asymmetric boundary conditions. The specimen represents a vault of the mosque of Dey in Algiers (Algeria), reproducing in detail the mechanical characteristics of masonry, and the constructive details including the presence of some peculiar wooden logs placed within the vault's abutments. The vault was tested with and without the presence of two steel bars which connect two opposite sides of the vault. The dynamic behaviour of both the vault's configurations were studied by using an incremental dynamic analysis up to the collapse of the vault without the steel bars. The use of an innovative high-resolution 3D optical system allowed measure displacement data of the cross vault during the shake table tests. The experimental results were analysed in terms of evolution of damage mechanisms, and in-plane and out-of-plane deformations. Moreover, the dynamic properties of the structure were investigated by means of an experimental modal analysis.

• Proceedings of the Korean Society of Crop Science Conference
• /
• 2004.10a
• /
• pp.21-35
• /
• 2004

Wheat is one of the most important cereal grain in the world, and also the staple next to rice in Korea based on its consumption. Although wheat planted area was dramatically decreased during late two decades in Korea compared to those of 1960s, fortunately there has been a continuous effort in recent to revive the wheat cultivating in this country by the non-government organizations such as Woorimil, Kanong etc. As the resusts, the cultivation area has increased to 3,792ha in 2004 from near zero ha of late 1980s. However there are many a pending problem that has to be solve In near future to enlarge the area more and more. The improvement of the postharvest technologies in wheat is one of the homeworks. This paper presents the numerous technologies that are applied to wheat as it moved from the field to final users. it investigated the technologies for harvesting, drying, storing and handling, insect management, and transporting, and blending in advanced wheat producing country..

• Resources Recycling
• /
• v.14 no.5 s.67
• /
• pp.3-12
• /
• 2005

In this paper the world wide patents on the recycle of used polystyrene were inspected. The trends and directions of on going and future technologies on this matter were analyzed. The range of search was limited in the open patents and in DB of U.S.A.(USPTO, DELPHION), Japan(PAJ), Europe(EPO), and Korea(KIPRIS). For the search condition the keyword, polystyrene or PS, and IPC classification, B29-017 and C08J-011 were used. The total of 534 cases was selected and analyzed according to years, countries, companies, and technologies.

• 대한예방의학회:학술대회논문집
• /
• 1996.10a
• /
• pp.3-26
• /
• 1996

Epidemiology and preventive medicine are changing together with Population and health and with ever expanding medical and non medical technologies. New technologies make epidemiology methodologically more sophisticated, but such advances risk overshadowing epidemiology's most important role: raising questions, providing answers, and helping the medical decision-making at ail levels of prevention. Epidemiology also plays a major role in the evaluation of new and other technologies whose effectiveness is poorly known. Epidemiological approaches, methods, techniques, and interpretations are widely used in new and rapidly expanding fields of medicine: research evaluation and synthesis (meta-analysis), establishment of guidelines for clinical preventive practices, new medical technology assessment, guidelines for national and international health policies, evidence-based medicine, outcomes research and disease management ('population-based' medicine and quality of care improvement). In the nearest future, infectious and noninfectious diseases may cease to be almost the sole subjects of epidemiology and they may share their place with other mass phenomena of the next millennium, such as medical practices and care, or political, social and economic actions and their consequences. Not only will primary, secondary, and tertiary Prevention will remain in the epidemiological mainstream, but health protection and health promotion will require perhaps a redefinition of epidemiology in these domains. Epidemiology and preventive medicine are both subjects of medical ethics and dilemma for right choices.

• Proceedings of the KIEE Conference
• /
• 2008.10c
• /
• pp.246-247
• /
• 2008

Further evolutions of technologies and needs of users will make mobile equipments improved. To make this happen, processor's good performance is essential. Hence, This paper propose a reform of Instruction Execute and Instruction Decode of contemporary ARMv7 which needs low-power and has the high performance for a faster processor. The first chapter explains why the performance of a processor has to be upgraded, the second chapter shows current technologies. The third chapter explains about the proposal and illustrates the structure. Finally, in the forth chapter, the conclusion will be made. 3-way Superscalar, that is proposed in this paper, will make designing a faster processor possible. And it will contribute for the advanced performance of mobile equipments.

• Journal of Information Technology Applications and Management
• /
• v.28 no.6
• /
• pp.133-143
• /
• 2021

Unity's Cinemachine, one of the game production technologies, can produce 3D images. However, since Cinemachine is a game production tool, video creators may find it difficult because the work process of Cinemachine is unfamiliar and complicated. However, it is necessary to learn new technologies for the future of video contents that will be advanced in the future. In order to understand Chinemachine as a video producer, I would like to embody the scene of the movie. We are going to produce a storyboard scene for storytelling in Cinemachine. We defined the workflow of Unity Cinemachine while directing the scene by creating a story, and also checked the advantages and cautions. I hope it will be an opportunity to enjoy using Unity Cinemachine, which is constantly evolving.