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Search Results: 1 - 10 of 2512 matches for " Soon Kwon "
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Two-direction multiwavelet moments
Soon-Geol Kwon
Mathematics , 2012,
Abstract: Two-direction multiscaling functions $\boldphi$ and two-direction multiwavelets $\boldpsi$ associated with $\boldphi$ are a more general and more flexible setting than one-direction multiscaling functions and multiwavelets. In this paper, we derive two methods for computing continuous moments of orthogonal two-direction multiscaling functions $\boldphi$ and orthogonal two-direction multiwavelets $\boldpsi$ associated with $\boldphi$. The first method is by doubling and the second method is by separation. Two examples for both methods are given.
The Chevrel phase In4.07Mo15S11.87Se7.13 with mixed chalcogenide occupancy
You-Soon Lee,Sung Kwon Kang
Acta Crystallographica Section E , 2009, DOI: 10.1107/s1600536809007351
Abstract: The single-crystal of the title compound, indium pentadecamolybdenum nonadeca(sulfide/selenide), was obtained by solid state reaction with an S/Se mixture. It adopts the structure type of In3Mo15Se19 and In3.7Mo15S19, which are non-substituted Chevrel phases in the space group P63/m. The Mo, one S/Se and two In sites have point symmetry m.. and two S/Se and one In atoms are in 3.. sites. This compound contains isolated Mo6 and Mo9 clusters. The shapes of clusters are octahedral and confacial bioctahedral, respectively, face-capped by chalcogen atoms over each triangle face. The Mo—X bonds (X = S, Se) play an important role for the constitution of the framework. The Mo—X distances of 2.479 (2)–2.6687 (9) are within the ranges of average values of Mo—S and Mo—Se distances. The In atoms located on sites with m.. symmetry are partially occupied.
Point values and normalization of two-direction multiwavelets and their derivatives
Fritz Keinert,Soon-Geol Kwon
Computer Science , 2013,
Abstract: Two-direction multiscaling functions $\boldsymbol{\phi}$ and two-direction multiwavelets $\boldsymbol{\psi}$ associated with $\boldsymbol{\phi}$ are more general and more flexible setting than one-direction multiscaling functions and multiwavelets. In this paper, we investigate how to find and normalize point values and those of derivatives of the two-direction multiscaling functions $\boldsymbol{\phi}$ and multiwavelets $\boldsymbol{\psi}$. %associated with $\boldsymbol{\phi}$. For finding point values, we investigate the eigenvalue approach. For normalization, we investigate the normalizing conditions for them by normalizing the zeroth continuous moment of $\boldsymbol{\phi}$. Examples for illustrating the general theory are given.
Comprehensive Interpretation of a Three-Point Gauss Quadrature with Variable Sampling Points and Its Application to Integration for Discrete Data
Young-Doo Kwon,Soon-Bum Kwon,Bo-Kyung Shim,Hyun-Wook Kwon
Journal of Applied Mathematics , 2013, DOI: 10.1155/2013/471731
Abstract: This study examined the characteristics of a variable three-point Gauss quadrature using a variable set of weighting factors and corresponding optimal sampling points. The major findings were as follows. The one-point, two-point, and three-point Gauss quadratures that adopt the Legendre sampling points and the well-known Simpson’s 1/3 rule were found to be special cases of the variable three-point Gauss quadrature. In addition, the three-point Gauss quadrature may have out-of-domain sampling points beyond the domain end points. By applying the quadratically extrapolated integrals and nonlinearity index, the accuracy of the integration could be increased significantly for evenly acquired data, which is popular with modern sophisticated digital data acquisition systems, without using higher-order extrapolation polynomials. 1. Introduction Numerical integration methods may be grouped in two categories. One is the rule for discrete data and the other is for function of continuous data. The Gauss-Legendre quadrature [1–6] is a well-known rule belonging to the latter category. In the former category for discrete data, the Newton-Cotes [7–9] method is applicable with many orders of integration. The 1st-order rule is the same as the trapezoidal rule [7] which can be extended to the Romberg integration method [7]. The 2nd-order rule is the same as Simpson’s 1/3rd rule, and 3rd-order rule is the same as Simpson’s 3/8th rule [7]. The 4th-order rule of Newton-Cotes is known as Boole’s rule using 5 data points [7]. As the order of integration in the Newton-Cotes methods increases, Runge’s phenomenon arises and the accuracy of integration becomes worse owing to the fluctuation of the interpolated higher-order polynomials [10]. The Gauss-Legendre quadrature uses function values at interior sampling points with corresponding best weights to result in a very accurate result in spite of the relatively small number of sampling points. However, this quadrature is inapplicable to discrete data points because it does not use boundary point data. In this study, we provide a lemma with a formula for the new 3-point Gauss quadrature of variable sampling points which include the Legendre point as well. An examination of the effect of these varied sampling points found that the one-point, two-point, and three-point Gauss quadratures adopting the Legendre sampling points and Simpson’s 1/3 rule were actually special cases of the variable three-point Gauss quadrature. The order of the polynomial that can be integrated precisely by conventional three-point Gauss quadrature is 5. On
Impacts of Pig Manure-Based Liquid Fertilizer Agricultural Application on the Water Quality of Agricultural Catchment  [PDF]
Min-Kyeong Kim, Soon-Ik Kwon, Hyen-Cheng Chun, Goo-Bok Jung, Kee-Kyung Kang
Journal of Environmental Protection (JEP) , 2013, DOI: 10.4236/jep.2013.42023
Abstract:

This study was conducted to understand the effect of the livestock liquid fertilizer treatment at field-scale up to catchment-scale on the water quality properties. Cultivated paddy rice and upland plots located in Gyeonggi province, Korea were treated with two different liquid fertilizers, SP (Liquid fertilizer with storage process) and SCB (Liquid fertilizer with slurry composting and bio-filtration process). Plots with no fertilizer (control A) and chemical fertilizer (control B) were also prepared for comparison. Water quantity and quality were monitored at the catchment outlet for assessing the effect on water quality of stream water. As a result, the losses of N and P and the values of EC (Electronic Conductivity) in the surface drainage water from paddy rice plots treated with SP and SCB were higher than those from the control plots (A and B). In addition, the losses of N and P by the runoff water from upland plots with SP and SCB treatment were higher than those from control plots (A and B). The nutrient outflow from paddy rice fields and uplands with application of liquid pig manure was higher than those from the control plots (A and B). Particularly, the outflow from uplands may directly affect the water quality in neighboring streams. This caused the major eutrophication problem in stream water. In conclusion, it is necessary to establish the proper management practices to prevent the nutrient losses from agricultural fields and the pollutants against water environments.

Influence of Indian mustard (Brassica juncea) on rhizosphere soil solution chemistry in long-term contaminated soils: A rhizobox study
Influence of Indian mustard (Brassicajuncea) on rhizosphere soil solution chemistry in long-term contaminated soils: A rhizobox study

Kwon-Rae Kim,Gary Owens,Soon-lK Kwon,
Kwon-Rae Kim
,Gary Owens,Soon-lK Kwon

环境科学学报(英文版) , 2010,
Abstract: This study investigated the influence of Indian mustard (Brassica juncea) root exudation on soil solution properties (pH, dissolved organic carbon (DOC), metal solubility) in the rhizosphere using a rhizobox. Measurement was conducted following the cultivation of Indian mustard in the rhizobox filled four different types of heavy metal contaminated soils (two alkaline soils and two acidic soils). The growth of Indian mustard resulted in a significant increase (by 0.6 pH units) in rhizosphere soil solution p...
A Roadmap to the Brittle Bones of Cystic Fibrosis
Ashwini P. Gore,Soon Ho Kwon,Antine E. Stenbit
Journal of Osteoporosis , 2011, DOI: 10.4061/2011/926045
Abstract: Cystic fibrosis (CF) is an autosomal recessive disorder which despite advances in medical care continues to be a life-limiting and often fatal disease. With increase in life expectancy of the CF population, bone disease has emerged as a common complication. Unlike the osteoporosis seen in postmenopausal population, bone disease in CF begins at a young age and is associated with significant morbidity due to fractures, kyphosis, increased pain, and decreased lung function. The maintenance of bone health is essential for the CF population during their lives to prevent pain and fractures but also as they approach lung transplantation since severe bone disease can lead to exclusion from lung transplantation. Early recognition, prevention, and treatment are key to maintaining optimal bone health in CF patients and often require a multidisciplinary approach. This article will review the pathophysiology, current clinical practice guidelines, and potential future therapies for treating CF-related bone disease.
Protective effect of the DNA vaccine encoding the major house dust mite allergens on allergic inflammation in the murine model of house dust mite allergy
Nacksung Kim, Soon Kwon, Jaechun Lee, Sohyung Kim, Tai Yoo
Clinical and Molecular Allergy , 2006, DOI: 10.1186/1476-7961-4-4
Abstract: To evaluate the effects of vaccination with mixed naked DNA plasmids encoding Der p 1, Der p 2, Der p 3, Der f 1, Der f 2, and Der f 3, the major house dust mite allergens on the allergic inflammation to the whole house dust mites (HDM) crude extract.Three hundred micrograms of these gene mixtures were injected into muscle of BALB/c mice. Control mice were injected with the pcDNA 3.1 blank vector. After 3 weeks, the mice were actively sensitized and inhaled with the whole house dust mite extract intranasally.The vaccinated mice showed a significantly decreased synthesis of total and HDM-specific IgE compared with controls. Analysis of the cytokine profile of lymphocytes after challenge with HDM crude extract revealed that mRNA expression of interferon-γ was higher in the vaccinated mice than in the controls. Reduced infiltration of inflammatory cells and the prominent infiltration of CD8+ T cells were observed in histology of lung tissue from the vaccinated mice.Vaccination with DNA encoding the major house dust mite allergens provides a promising approach for treating allergic responses to whole house dust mite allergens.It has been reported that IgE-mediated inflammation to mites is associated with diseases such as asthma, allergic rhinitis, and atopic dermatitis and that the relatively minor determinants of house dust mite (HDM) allergens show IgE binding with 40% or more of allergic sera [1-4]. The most frequently implicated allergens are derived from Dermatophagoides pteronyssinus (Der p) and Dermatophagoides farinae (Der f) [5]. Targeting specific T lymphocytes that induce or regulate the allergic inflammation is one of the therapeutic goals in allergic disorders. Specific immunotherapy with crude extracts has been used mainly in treating HDM-induced allergy. However, it has limited efficacy. Recently, vaccinations with naked DNA encoding antigen were reported to induce long-lasting cellular and humoral immune tolerance [6,7]. Injection of plasmid DNA encoding
Comparison of Natural Course, Intravitreal Triamcinolone and Macular laser photocoagulation for Treatment of Mild Diabetic Macular Edema
Soon Il Kwon, Sung Uk Baek, In Won Park
International Journal of Medical Sciences , 2013,
Abstract: Purpose: To assess the natural course of the mild diabetic macular edema(DME) and to compare the visual outcomes with the patients with receiving either macular laser photocoagulation or intravitreal injection of triamcinolone acetonide(IVTA). Methods: 28 eyes with central macular thickness (CMT) of between 250 to 300μm were followed without treatment and 48 eyes with CMT between 300 to 500μm had been divided into 3 subgroups according to treatment. We evaluated the best corrected visual acuity (BCVA) and CMT of natural course group and compared the BCVA and CMT of the patients who had been treated with IVTA or macular laser treatment. Results: The eyes with DME between 250 to 300μm showed no significant change in BCVA and CMT at 6 month. Among the eyes with DME between 300 to 500μm, all 3 subgroups showed no statistically significant change of BCVA at any follow up period and no significant difference was revealed among the subgroups. All subgroups showed significant reduction of CMT after 1 month and maintained until final follow-up and there was no significant difference among subgroups. Conclusions: Mild DME between 250 to 500μm did not show significant worsening of BCVA or macular edema without any specific treatment.
A Roadmap to the Brittle Bones of Cystic Fibrosis
Ashwini P. Gore,Soon Ho Kwon,Antine E. Stenbit
Journal of Osteoporosis , 2011, DOI: 10.4061/2011/926045
Abstract: Cystic fibrosis (CF) is an autosomal recessive disorder which despite advances in medical care continues to be a life-limiting and often fatal disease. With increase in life expectancy of the CF population, bone disease has emerged as a common complication. Unlike the osteoporosis seen in postmenopausal population, bone disease in CF begins at a young age and is associated with significant morbidity due to fractures, kyphosis, increased pain, and decreased lung function. The maintenance of bone health is essential for the CF population during their lives to prevent pain and fractures but also as they approach lung transplantation since severe bone disease can lead to exclusion from lung transplantation. Early recognition, prevention, and treatment are key to maintaining optimal bone health in CF patients and often require a multidisciplinary approach. This article will review the pathophysiology, current clinical practice guidelines, and potential future therapies for treating CF-related bone disease. 1. Introduction Cystic fibrosis (CF) is an autosomal recessive disorder caused by defects in the cystic fibrosis transmembrane conductance regulator protein (CFTR), a chloride channel found in the epithelial tissues in the lungs, sinuses, pancreas, skin, and gastrointestinal tract. CF most commonly affects Caucasians and occurs with a frequency of 1 in 2000 to 3000 live births in the United States each year [1]. The defects in CFTR leads to alterations in the sodium, chloride, and water transport in the epithelial cells and in turn to changes in the viscosity and hydration of the fluids overlying the epithelial cells. The change in the fluid composition is partially responsible for several of the complications associated with the progression of CF such as chronic respiratory infections, pancreatic duct obstruction, pancreatic insufficiency, biliary obstruction, cirrhosis as well as distal intestinal obstruction syndrome. In addition to expression of CFTR in a variety of epithelial cells, its expression has been found in osteoblasts but its precise role in these cells remains to be elucidated [2, 3]. The respiratory disease is hallmarked by bronchiectasis caused by cycles of infection, inflammation, and destruction of the airways. Airway clearance and aerosolized therapies have been a staple in the care of the CF patients for the past several decades and have lead to an improvement in the lifespan of the patients leading some to consider it now a life-limiting instead of a fatal disease. However, CF continues to lead to premature respiratory failure from
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