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Yangsan, South Korea

Youngsan University is a private university in southeastern South Korea. It operates a main campus in Yangsan City, South Gyeongsang province, a branch campus in nearby Busan, and an "auxiliary learning center" in Seoul. Youngsan offers undergraduate degrees in various practical fields, including international studies, law, Asian business, and information engineering. It also offers graduate degrees in legal affairs, hotel tourism management, information technology, real estate, and teaching English as a foreign language. Wikipedia.

Park H.,Youngsan University
International Journal of Smart Home | Year: 2013

With the recent advances in mobile platform technologies, a variety of studies on context-aware information services for the tourist information domain have been undertaken. Many studies on ontological approaches to tourist informationservices, moreover, have been conducted. However, most studies have focused on upper-level or domain ontologies; comparatively, few have proceeded from the perspective of task ontology based on mobile users' generic tasks. Thus, we considered the construction of a task model and task ontology based on mobile users' generic activities for a task-oriented tourist information service. In this paper, we introduce 1) a generic task model based on travelers' needs and generic activities before and during trips, which model accounts for generic tasks and task processes; 2) a task ontology based on the generic task model, and 3) a task-ontology-based Task-Oriented Tourist Information Service (TOTIS). Using the generic task model and the task ontology, task-oriented menu can be constructed automatically by means simply users' selections and context-awareness. Additionally, compared with the existing domain-oriented services, the TOTIS can facilitate more flexible searching of tourist information and make real-time determinations with context-awareness.

Kim J.-W.,Youngsan University
Communications in Computer and Information Science | Year: 2011

We propose an algorithm for dynamic signature verification using the latest Smart-phones such as iPhone, android phone and MS windows phone. Also, we suggest simple signature patterns, the performance of a dynamic signature verification system, which determine the authentication of signatures by comparing and analyzing various dynamic data such as shape of the signature, writing speed, slant of shape, and the order and number of strokes for personal signatures for the smart-phones. In ubiquitous society, the smart-phone will be very important portable device for the mankind. © 2011 Springer-Verlag.

Ji S.G.,Eulji University | Kim M.K.,Youngsan University
Clinical Rehabilitation | Year: 2015

Objective: To investigate the effect of mirror therapy on the gait of patients with subacute stroke. Design: Randomized controlled experimental study. Setting: Outpatient rehabilitation hospital. Subjects: Thirty-four patients with stroke were randomly assigned to two groups: a mirror therapy group (experimental) and a control group. Interventions: The stroke patients in the experimental group underwent comprehensive rehabilitation therapy and mirror therapy for the lower limbs. The stroke patients in the control group underwent sham therapy and comprehensive rehabilitation therapy. Participants in both groups received therapy five days per week for four weeks. Main measures: Temporospatial gait characteristics, such as single stance, stance phase, step length, stride, swing phase, velocity, and cadence, were assessed before and after the four weeks therapy period. Results: A significant difference was observed in post-training gains for the single stance (10.32 SD 4.14 vs. 6.54 SD 3.23), step length (8.47 SD 4.12 vs. 4.83 SD 2.14), and stride length (17.03 SD 6.57 vs 10.54 SD 4.34) between the experimental group and the control group (p 〈 0.05). However, there were no significant differences between two groups on stance phase, swing phase, velocity, cadence, and step width (P 〉 0.05). Conclusion: We conclude that mirror therapy may be beneficial in improving the effects of stroke on gait ability. © The Author(s) 2014.

Kim B.,Youngsan University
Applied Physics Express | Year: 2012

An optical blue-shifting mechanism is reported for a heterostructure light-emitting solar cell (LESC), which has two absorbing layers and an emitting layer to act simultaneously as a photovoltaic device and an optical up-convertor. A detailed balance analysis for a combined system of an LESC and a single-junction solar cell gives a maximum efficiency of 43.9% for a band gap of 1.90 eV. Validity of the analysis has been demonstrated by comparing an analyzed result with that obtained from Shockley and Queisser's detailed balance model at a specific condition. © 2012 The Japan Society of Applied Physics.

Kim J.-W.,Youngsan University
International Journal of Multimedia and Ubiquitous Engineering | Year: 2015

This paper presents research on the TinyOS operating system and associated nesC programming methods. TinyOS is currently being used in many domestic and foreign research institutes, universities and companies. We describe TinyOS and nesC programming methods and their characteristics, comparing with existing programming languages such as C, C++, and MFC window programming. Additionally control methods and analysis activation characteristics of two domestic companies’ wireless sensors are introduce. We tried to explain easily and hope to be used in various industry fields © 2015 SERSC.

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