• Journal of the HCI Society of Korea
• /
• v.6 no.2
• /
• pp.1-9
• /
• 2011

Increasing communication through social media forming impression becomes more important. In this research, how three stimulus can build the impression of Twitter Account Owner(TAO) such as the types of the profile pictures, the types of timeline messages and the number of followers. We analysed the feelings of respondents when they face TAO's formal picture and informal picture, informative message and normal message, the number of followers. We, in addition, measured the willingness of respondents whether they want to develop their relationship online and offline as well. As a result, informative message draws positive reliability and makes respondent want to build deeper relationship with TAO at online. Respondent answered TAO's informal picture was more likable than formal picture and more reliable when informative message and formal picture were provided together. Our study shows that there are actual differences at attitudes of respondents by the types of the profile pictures and the types of timeline messages. Thus, we can conclude that TAOs can modify their impressions at online as they hope to.

• Journal of Digital Convergence
• /
• v.19 no.3
• /
• pp.187-194
• /
• 2021

OSINT(Open Source Intelligence), rapidly increasing on the surface web in various forms, can also be used for criminal investigations by using profiling. This technique has become quite common in foreign investigative agencies such as the United States. On the other hand, in Korea, it is not used a lot, and there is a large deviation in the quantity and quality of information acquired according to the experience and knowledge level of investigator. Unlike Bazzell's most well-known model, we designed a Korean-style OSINT-based profiling technique that considers the Korean web environment and provides timeline information, focusing on the improved workflow. The database schema to improve the efficiency of profiling is also presented. Using this, we can obtain search results that guarantee a certain level of quantity and quality. And it can also be used as a standard training course. To increase the effectiveness and efficiency of criminal investigations using this technique, it is necessary to strengthen the legal basis and to introduce automation technologies.

• The Journal of Asian Finance, Economics and Business
• /
• v.6 no.3
• /
• pp.41-53
• /
• 2019

Building a target capital structure is one of the most important decisions in corporate financial management. The purpose of this article is to identify the determinants of capital structure and adjustment mechanism toward the target leverage. The partial adjustment model was applied on a sample of 306 non-financial companies listed on Vietnam stock exchange market during the period of 2008-2017. By the fixed effect model estimation method, the research results have discovered the factors of growth opportunities, firm size, tangible fixed assets and firm's unique characteristics have a positive effect on the target capital structure of enterprises. Besides, profitability and dividend payment have a negative effect on the target capital structure of enterprises. Accordingly, the research results show that the average adjustment speed toward target leverage of the firms is 90.03%. Research results also demonstrate firms have higher or lower debt ratio than the target debt ratio, capital surplus or capital deficit also have an impact on the adjustment rate toward the target capital structure. The research results are consistent with the Dynamic Trade-off Theory. From this result, this article has provided policy implications for non-financial companies listed on Vietnam's stock market in building a reasonable target capital structure according to operating timeline to maximize enterprise value.

• 한국HCI학회:학술대회논문집
• /
• 2008.02a
• /
• pp.256-261
• /
• 2008

We developed an authoring tool for designing vibrotactile patterns quickly and easily by using the drag-and-drop paradigm in mobile devices. Designed vibrotactile patterns are registered into a data pool in the XML format, improving the reusability and extensibility of vibrotactile patterns. A multi-channel timeline interface is also incorporated to provide time-synchronized pattern editing for multiple vibration patterns (for multiple vibration actuators). In addition, an internal vibration player is embedded in the authoring tool in order to evaluate the patterns on the spot. A transform function for perceptually transparent vibration rendering can also be set in the editor. Although the authoring tool was developed for mobile devices, it can be used for other applications such as haptic interaction m virtual reality.

• Journal of Korea Multimedia Society
• /
• v.10 no.1
• /
• pp.36-48
• /
• 2007

This paper proposed 3D keyframe animation using orientation interpolator. 3D keyframe animation consists of a number of transform nodes that have geometrical node of initial model and several interpolator nodes that represent the object moving. In the proposed algorithm, we randomly selects transform nodes with orientation interpolator node and performs to resample quaternion components for haying uniform key time. And then, watermark bits are embedded into quaternion components with large rotation angles. Experimental results verified that the watermark embedded by the proposed algorithm had good robustness against geometrical attacks and timeline attacks and also PSNR of keyvalue in orientation interpolator node is above 42dB.

• Structural Engineering and Mechanics
• /
• v.46 no.1
• /
• pp.53-73
• /
• 2013

Prediction of prestressed concrete girder integral abutment bridge (IAB) load effect requires understanding of the inherent uncertainties as it relates to thermal loading, time-dependent effects, bridge material properties and soil properties. In addition, complex inelastic and hysteretic behavior must be considered over an extended, 75-year bridge life. The present study establishes IAB displacement and internal force statistics based on available material property and soil property statistical models and Monte Carlo simulations. Numerical models within the simulation were developed to evaluate the 75-year bridge displacements and internal forces based on 2D numerical models that were calibrated against four field monitored IABs. The considered input uncertainties include both resistance and load variables. Material variables are: (1) concrete elastic modulus; (2) backfill stiffness; and (3) lateral pile soil stiffness. Thermal, time dependent, and soil loading variables are: (1) superstructure temperature fluctuation; (2) superstructure concrete thermal expansion coefficient; (3) superstructure temperature gradient; (4) concrete creep and shrinkage; (5) bridge construction timeline; and (6) backfill pressure on backwall and abutment. IAB displacement and internal force statistics were established for: (1) bridge axial force; (2) bridge bending moment; (3) pile lateral force; (4) pile moment; (5) pile head/abutment displacement; (6) compressive stress at the top fiber at the mid-span of the exterior span; and (7) tensile stress at the bottom fiber at the mid-span of the exterior span. These established IAB displacement and internal force statistics provide a basis for future reliability-based design criteria development.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.32 no.3C
• /
• pp.287-296
• /
• 2007

3D keyframe animation is used widely in 3D graphics for real-time animation. This is a method that registers the animated key values in the important several frames among the entire frames and generates the rest frame by interpolator using the registered key values. This paper proposed the watermarking for 3D keyframe animation using PositionInterpolator. The proposed algorithm selects randomly the embedding meshes, which are transform nodes among the entire hierarchical structure. Then the watermark is embedded into keyValues of PositionInterpolator in selected transform node. Experimental results verified that the proposed algorithm has the robustness against geometrical attacks and timeline attacks.

• Journal of Korean Society of Archives and Records Management
• /
• v.6 no.2
• /
• pp.5-25
• /
• 2006

In this study, twelve research papers on "records management and archives research areas" that were written from the 1980s to the 2000s were analyzed according to a timeline. The results show that the main subject areas during the 1980's were records and archives. During the 1990s, with the increase of electronic records, research areas expanded to information systems and related social environments. In the 2000s, more advanced technical and interdisciplinary subjects have emerged in the digital society. These results show that research areas in records management and archives still have much potential for growth and will expand in the near future.

• The Journal of Korean Medical History
• /
• v.24 no.2
• /
• pp.135-143
• /
• 2011

The market of conferences and expos of traditional/ complementary and alternative medicine has not been mature enough while interests in those medicines are growing fast. Meanwhile, some related events in Europe, North America, and Asia, held on regular basis, have reached to the international level in size, such as CAMExpo The Complementary, Natural & Healthcare Show in Europe, Integrative Healthcare Symposium in North America, Ayurveda Congress & Arogya Expo in India, International Conference and Exhibition of the Modernization of Chinese Medicine & Health Products in Hong Kong. Those events have been held for 10 years or so, initiated their own features, and secured their own regular booth exhibitors and visitors. They open the homepage on the internet one or two years before their events are held and vigorously advertise their events on yearly basis. To succeed in, and bear fruits from, the 2013 World Traditional Medicine Expo in Sancheong, it is needed to analyze strong points of the events above and benchmark a practical timeline and technical road map to the 2013 Expo from them.

• The Journal of Korean Medical History
• /
• v.33 no.1
• /
• pp.21-30
• /
• 2020

'Medical officials of State Council' (議政府藥房) (MOSC) were bureaucrats who was part of a State Council and provided regular medical care to the State Council's bureaucracy. The Manual for Medical Officials of State Council (議政府藥房式例) (MMOSC) is a rare resource that records the actual work of the MOSC in the 19th century. This paper examines the changing history of the title of 'medical official' (藥房, yakbang) in the Joseon Dynasty and analyzes the role of MOSC by examining the contents of MMOSC. It argues: 1) The MOSC system was established before other similar medical office systems. Subsequently, the Medical Office of Ritual Minister (禮曹藥房) and Medical Office of Patriots and Veterans Minister (忠勳府藥房) were established, followed by Medical Office of General Office (都總府藥房) and Medical Office of Managing Royal Family (宗親府藥房). 2) The MMOSC was first written in 1812 and was augmented in 1832 and 1840. This timeline can be verified through written seal at the end of the literature. 3) In addition to the medicine-related work, the medical office also did the administrative work of the government office.