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| 1 | Radial growth response of Pinus densiflora and Quercus spp.to topographic and climatic factors in South Korea显示文摘Aims This study aimed to develop radial growth models and to predict the potential spatial distribution of Pinus densiflora(Japanese red pine)and Quercus spp.(Oaks)in South Korea,considering topographic and climatic factors.Methods We used a dataset of diameter at breast height and radial growth estimates of individual trees,topographic and climatic factors in systematic sample plots distributed over the whole of South Korea.On the basis that radial growth is attributed primarily to tree age,we developed a radial growth model employing tree age as an explanatory variable.We estimated standard growth(SG),defined as radial growth of the tree at age 30,to eliminate the influence of tree age on radial growth.In addition,SG estimates including the Topographic Wetness Index,temperature and precipitation were calculated by the Generalized Additive Model.Important Findings As a result of variogram analysis of SG,we found spatial autocorrelation between SG,topographic and climatic factors.Incremental temperature had negative impacts on radial growth of P.densiflora and positive impacts on that of Quercus spp.Precipitation was associated with positive effects on both tree species.Based on the model,we found that radial growth of P.densiflora would be more vulnerable than that of Quercus spp.to climatic factors.Through simulation with the radial growth model,it was predicted that P.densiflora stands would be gradually replaced with Quercus spp.stands in eastern coastal and southern regions of South Korea in the future.The models developed in this study will be helpful for understanding the impact of climatic factors on tree growth and for predicting changes in distribution of P.densiflora and Quercus spp.due to climate change in South Korea. | Jae Gyun Byun Woo Kyun Lee Moonil Kim Doo Ahn Kwak Hanbin Kwak Taejin Park Woo Hyuk Byun Yowhan Son Jung Kee Choi Young Jin Lee Joachim Saborowski Dong Jun Chung Jin Hyun Jung | 2013 | Journal of Plant Ecology2013，6，5： | 3 |
| 2 | Investigation of drying characteristics of low rank coal of bubbling fluidization through experiment using lab scale显示文摘Lignite is a low rank coal which is evenly distributed throughout the world and accounts for 45% of the total coal reserves. As it has a higher moisture content, its moisture content must be reduced in order to utilize it in power plant. In the present work, experiments on lignite has been done using a lab scale fluidized-bed reactor. Drying lignite through fluidized-bed reactor has a higher drying rate because there is good contact between particles and gas in the fluidized-bed reactor. Fluidized-bed drying can use air of 1.5 times of the minimum fluidizing velocity performance at bubbling fluidized-bed. Experiments have been performed on coal particle sizes of 0.3–1 mm, 1–1.18 mm and 1.18–2.8 mm, with operating temperatures being 100°C, 125°C and 150°C, respectively. It is found that fluidization has a higher drying rate due to the heat transfer rate through air velocity. Hence, moisture content in lignite can be dried to a desired value with a time interval of 10 min. The experiment through fluidized-bed reactor is expected to be useful for saving money and time. | DoMan JEON TaeJin KANG HyungTaek KIM SiHyun LEE SangDo KIM | 2011 | Science China(Technological Sciences)2011，54，7： | 2 |
| 3 | Dynamic adjust of container stacking policy in an automated container terminal 显示文摘 | Taejin Park Ri Choe Young Hun Kim Kwang Ryel Ryu | 2011 | Interuational Journal of Production Economics2011，133，： | 1 |
| 4 | Estimation of Rear-end Crash Potential Usingvehicle Trajectory Data显示文摘 | CheolOh Taejin Kim | 2010 | Accident Analysis and Prevention2010，，42： | 1 |
| 5 | Plasma osteoprotegerin levels in- crease with the severity of cerebral artery atherosclerosis 显示文摘 | Kim J Song Taejin Yang SH | 2013 | Clinical Biochemistry2013，46，12： | 1 |
| 6 | Cloning and sequence diaysis of the Korean strain of spike gene of porcine epidemic diarrhea virus and expression of its neutralizing epitope in plants显示文摘 | Kang Taejin Seo J E Kim D H | 2005 | Protein Expression and Purification2005，41，2： | 1 |
| 7 | Efficient Explanation and Evaluation Methodology Based on Hybrid Feature Dropout显示文摘AI-related research is conducted in various ways,but the reliability of AI prediction results is currently insufficient,so expert decisions are indispensable for tasks that require essential decision-making.XAI(eXplainable AI)is studied to improve the reliability of AI.However,each XAI methodology shows different results in the same data set and exact model.This means that XAI results must be given meaning,and a lot of noise value emerges.This paper proposes the HFD(Hybrid Feature Dropout)-based XAI and evaluation methodology.The proposed XAI methodology can mitigate shortcomings,such as incorrect feature weights and impractical feature selection.There are few XAI evaluation methods.This paper proposed four evaluation criteria that can give practical meaning.As a result of verifying with the malware data set(Data Challenge 2019),we confirmed better results than other XAI methodologies in 4 evaluation criteria.Since the efficiency of interpretation is verified with a reasonable XAI evaluation standard,The practicality of the XAI methodology will be improved.In addition,The usefulness of the XAI methodology will be demonstrated to enhance the reliability of AI,and it helps apply AI results to essential tasks that require expert decision-making. | Jingang Kim Suengbum Lim Taejin Lee | 2023 | Computer Systems Science & Engineering2023，47，10： | 0 |
| 8 | Performance evaluation and calibration of capacitance sensor for estimating the salinity of reclaimed land显示文摘Generally,soil moisture and salinity in reclaimed land are monitored using soil dielectric sensors such as time domain reflectometry,frequency domain reflectometry,and capacitance.The soil dielectric sensor measures apparent dielectric permittivity.However,apparent dielectric permittivity is affected by soil moisture,salinity,and texture.In this study,performance evaluation and calibration of a dielectric sensor(5TE;METER Group,Inc.,Pullman,WA,USA)for monitoring soil salinity were performed.Laboratory calibration tests were completed,incorporating various levels of dry density,water content,and salinity.The soil salinity was determined by the electrical conductivity(EC)1:5 method.The volumetric water content as measured by the sensor was affected by dry density and water content.Generally,it linearly increased as dry density and water content increased.However,when dry density or water content was high,the measured value of the sensor increased nonlinearly.The bulk EC measured by sensor had no specific correlation with EC 1:5.The EC 1:5 measurement had a linear relationship with the gradient ofθandθs.Therefore,it can be estimated with a simple linear equation usingθfrom the soil test andθs from the capacitance sensor.The R 2 value of the EC 1:5 estimation equation was 0.98.The proposed equation requiresθfrom the gravimetric sample andθs from the sensor.Therefore,in the case of monitoring salinity using a sensor,it is recommended to measure the water content with a tensiometer. | Donggeun Kim Younghwan Son Jaesung Park Taejin Kim Jihun Jeon | 2020 | International Journal of Agricultural and Biological Engineering2020，13，1： | 0 |
| 9 | New Precoded Spatial-Multiplexing for an Erasure Event in Single Frequency Networks显示文摘In this paper, we propose a new spatial-multiplexing(SM) scheme employing an orthogonal precoder over Rayleigh-fading channels for an erasure event in single frequency networks(SFN). To optimize the precoder, the average bit error rate(BER) is evaluated and minimized through a mathematical analysis. Compared to an ordinary SM, the proposed scheme guarantees identical BER performance under non-erasure fading channels and achieves a greatly improved performance under erasure fading channels, especially for a higher erasure-ratio and SNR values. This improvement is mainly due to the increase in the diversity gain incurred by the optimized precoder over the erasure event. We also compare the performance of the proposed SM to that of the conventional constellation-rotation(CR) scheme applied to the single antenna SFN systems. The results of a computer simulation show that the performance of the new scheme is more effective than that of a conventional CR across all simulation cases. | hojun kim seyoung kim yulong shang seunghyeon kim taejin jung | 2018 | China Communications2018，15，4： | 0 |
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