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Suigen, South Korea

Kyonggi University is an accredited, private higher education institution, established in 1947. Kyonggi has over 17,000 students in majors in undergraduate and graduate programs on two campuses, Seoul and Suwon. The main campus is in Suwon which is a city located 30 miles from the capital Seoul. The Seoul campus is located in the center of Seoul.Kyonggi University has 11 colleges containing 63 programs of study and 12 graduate schools offering majors. The strength in Kyonggi's academic programs and research lies in Tourism, Hospitality, Arts and Design, Business, International Studies, Environmental Engineering, and Architectural Engineering. KGU teaches all courses in English. Kyonggi has established a sister-university relationship with 152 universities in 31 countries. KGU has a Korean language program. Over 650 international students study at Kyonggi. Wikipedia.

Sung Y.,Kyonggi University
IEEE Microwave and Wireless Components Letters | Year: 2010

A novel approach for designing dual-mode dual-band bandpass filters is proposed and experimentally studied. By embedding a pair of slits in the square patch, the dual-band response is realized and one transmission zero is introduced between the two passbands. Two degenerate modes are achieved by loading with a small square perturbation, which can be placed at the diagonal line. There are three transmission zeros. The slits control the first and third transmission zeros. On the other hand, the right crossed slots control the first and the second transmission zeros. © 2006 IEEE.

Jin C.,Kyonggi University
Information and Management | Year: 2013

The author explored the factors that affect user's acceptance of Facebook by analyzing data provided in a survey of Facebook users (n = 346) using hypotheses based on the Technology Readiness and Acceptance Model (TRAM). In addition, he investigated the role of a revised TRAM on social capital building. Results showed statistically significant support for the hypothesized model, indicating that positive and negative technology readiness (PTR and NTR) play an important role in the formation of perceived ease of use (PEOU), perceived usefulness (PU), and perceived playfulness (PP) as well as in generating the intention to continue using (ICU) Facebook and social capital building. However, NTR did not significantly affect PP. The study also showed that ICU Facebook was mediated by users' PEOU, PU, and PP, and that social capital building was mediated by ICU Facebook. Theoretical and practical implications and limitations are discussed. © 2013 Elsevier B.V.

Sung Y.,Kyonggi University
IEEE Antennas and Wireless Propagation Letters | Year: 2012

In this letter, a novel ultrawideband (UWB) antenna with dual sharply rejected notch bands is proposed. The proposed antenna consists of a circular-shaped radiating element, a 50-Ω microstrip feed line, two short-circuited folded stepped impedance resonators (SIRs), and a partially truncated ground plane. The compact folded SIRs are located beside the feed line to achieve the band rejection characteristic. The proposed antenna shows UWB characteristics from around 3.07 up to 10.61 GHz for VSWR < 2 with one notch frequency band at 3.41-3.68 GHz and the other at 5.37-6.01 GHz. The notched frequencies can be adjusted according to specification by altering the folded SIR. © 2012 IEEE.

Sung Y.,Kyonggi University
IEEE Transactions on Antennas and Propagation | Year: 2012

A printed wide-slot antenna with a parasitic patch for bandwidth enhancement is proposed and experimentally investigated. A simple 50-Ω microstrip line is used to excite the slot. A rotated square slot resonator is considered as reference geometry. The rotated square slot antenna exhibits two resonances (f 1: lower resonant frequency, f 2: higher resonant frequency). By embedding a parasitic patch into the center of the rotated square slot, the lower resonant frequency f 1 is decreased and the higher resonant frequency f 2 is increased. Thus, broadband characteristic of the wide-slot antenna is achieved. The measured results demonstrate that this structure exhibits a wide impedance bandwidth, which is over 80% for S 11 ≤ -10dB ranging from 2.23 to 5.35 GHz. Also, a stable and omnidirectional radiation pattern is observed within the operating bandwidth. In this design, a smaller ground plane is considered compared to the reference antenna (rotated square slot antenna without the parasitic center patch). © 2012 IEEE.

Rim C.-S.,Kyonggi University
International Journal of Climatology | Year: 2013

The implications of geographical factors (i.e. elevation, freshwater area, urbanization, and proximity to coast) and climatic factors (i.e. air temperature, wind speed, relative humidity, and solar radiation) with regard to drought trend were investigated by analyzing the monthly averaged daily climate data (i.e. precipitation, temperature, wind speed, relative humidity, and solar radiation) recorded from 1973 to 2006 at 53 climatological stations in South Korea. In addition, geographical characteristics were identified by GIS analysis and land cover data were analyzed for these 53 stations. Further, multivariate regression analyses were performed by setting the Standardized Precipitation Index (SPI) trend as the dependent variable and the geographical and climatic factors as the independent variables. The results indicated that, overall, the droughts in South Korea are becoming more severe in spring for the short- and seasonal term; however, the droughts in all seasons are becoming less severe for the long term. The effects of geographical and climatic factors on drought trends are also closely related to seasonality and drought duration for short-, seasonal-, and medium-term droughts, but not for long-term droughts. Therefore, for efficient water resources management for drought preparedness, drought duration and seasonality should also be considered along with geographical and climatic characteristics of a region. © 2012 Royal Meteorological Society.

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