https://pubs.kist.re.kr/handle/123456789/75390 Wed, 15 Apr 2026 18:24:45 GMT 2026-04-15T18:24:45Z https://pubs.kist.re.kr/handle/201004/115735 Title: Expansion of spatial measurement range in a correlation based Brillouin optical sensing system Authors: Jeong, Ji Ho; Lee, Kwanil; Jeong, Je-Myung; Lee, Sang Bae Abstract: We propose a novel technique for expansion of spatial measurement range in a Brillouin optical correlation domain analysis (BOCDA) sensor system. Unlike conventional BOCDA, which has only a single correlation peak within the sensing fiber, the proposed scheme has multiple correlation peaks within the sensing section, and enables us to obtain selectively the physical information at a position corresponding to each correlation peak since the fiber under test consists of different kinds of fibers with different Brillouin frequency shifts. Using the proposed technique, we have successfully expanded a measurement range while maintaining the spatial resolution. Sat, 01 Jan 2011 00:00:00 GMT https://pubs.kist.re.kr/handle/201004/115735 2011-01-01T00:00:00Z https://pubs.kist.re.kr/handle/201004/115734 Title: A Guideline for an Outpatient Guidance System for Use in General Hospitals Authors: Kim, Gunhee; Park, Jukyung; Han, Manchul; Park, Hyunchul; Jung, Dayoung; Park, Sehyung; Lee, Seongil; Ha, Sungdo Abstract: This paper presents a guideline for a hospital guidance system that provides outpatients with guidance about their process and location. When visiting general hospitals, outpatients often encounter difficulties in understanding the hospital process and in knowing where to go next during that process. To address this issue, we initially conducted an ethnographic interview of fifteen outpatients to determine their needs, interviewed hospital staff to discover exceptional cases, and then analyzed the hospital process for outpatients to uncover any timing difficulties so as to specify the proposed guidance service. Considering the findings of the user study and the result of a domain analysis, we formulated the outpatient guidance service. The outpatient guidance system is presented here as an example. Sat, 01 Jan 2011 00:00:00 GMT https://pubs.kist.re.kr/handle/201004/115734 2011-01-01T00:00:00Z https://pubs.kist.re.kr/handle/201004/115733 Title: TiO2 Photocatalysis for the Redox Conversion of Aquatic Pollutants Authors: Lee, Jaesang; Kim, Jungwon; Choi, Wonyong Abstract: Photo-induced redox chemical reactions occurring on irradiated semiconductor surfaces have been utilized for the purification of water contaminated with various inorganic and organic chemicals. Here, we focus on TiO2 as the most popular photocatalyst and briefly describe its characteristics and applications mainly in relation with the photochemical redox conversion of aquatic pollutants. The photoexcitation of TiO2 induces electron-hole pair formation and subsequent charge separation/migration/transfer leads to the production of highly reactive oxygen species (ROS) such as OH radical and superoxide on the surface of TiO2. Aquatic organic pollutants subsequently react with ROS, holes, or electrons, and they undergo a series of redox chemical reactions, eventually leading to mineralization. The photo-induced ROS generation on TiO2 is exploitable for bacterial/viral inactivation as well, while TiO2 particles at the nano- and microscale possibly induce adverse biological effects in the absence of light. Photo-induced redox reactions on TiO2 can also transform a variety of inorganic pollutants such as oxyanions (arsenite, chromate, bromate, etc.), ammonia, and metal ions. On the other hand, the photocatalytic degradation mechanism can be actively controlled by modifying the surface of TiO2 to change the products. For example, the photocatalytic degradation of phenolic compounds can be accompanied by the simultaneous production of hydrogen when the surface of TiO2 is modified with both platinum and fluoride. Finally, the photocatalytic activity of TiO2 is highly dependent on the kind of substrates and the activity assessed with a specific test substrate is difficult to generalize. Therefore, the photocatalytic activities of TiO2 should be assessed using multiple substrates to obtain balanced information. Sat, 01 Jan 2011 00:00:00 GMT https://pubs.kist.re.kr/handle/201004/115733 2011-01-01T00:00:00Z https://pubs.kist.re.kr/handle/201004/115732 Title: Effect of Aesthetic Design Elements on Tabletop Display Interaction Authors: Lee, Hyunglae; Shin, Hyunjin; Park, Ji-Hyung Abstract: Recent technology developments in the field of tabletop display systems have provided new types of user experiences that were unavailable in traditional vertical displays. While substantial amount of work has been done on new technologies and usability tests for a tabletop display system, not much attention was focused on aesthetic design aspect. In this paper, we studied the effect of aesthetic design elements on tabletop display interactions, especially focusing on users' emotional satisfaction and usability. For this purpose, two different tabletop display systems, one aesthetically well designed with 5 selected design elements (color, typography, form, graphic, and sound) and the other not, were tested in an intelligent collaborative environment. The user study showed that an aesthetically well-designed tabletop system not only influenced users' emotional satisfaction but also usability by enhancing the abilities in human perception, and eventually affected overall user experience with the system. Sat, 01 Jan 2011 00:00:00 GMT https://pubs.kist.re.kr/handle/201004/115732 2011-01-01T00:00:00Z