The Incidence and Clinical Outcome of Constrictive Physiology After Coronary Artery Bypass Graft Surgery

Im, E.,Shim, C.Y.,Hong, G.R.,Yoo, K.J.,Youn, Y.N.,Chang, B.C.,Jang, Y.,Chung, N.,Ha, J.W. Elsevier Biomedical 2013 JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY - Vol.61 No.20

Bifurcation problem for a class of quasilinear fractional Schr\"{o}dinger equations

Imed Abid 대한수학회 2020 대한수학회지 Vol.57 No.6

We study bifurcation for the following fractional Schr\"{o}dinger equation \begin{eqnarray*}\left\{ \begin{array}{rlll} (-\Delta)^{s}u+V(x)u& = \lambda\,f(u)& \hbox{in}\,\Omega \\ u&>0& \hbox{in}\,\Omega\\ u &=0 &\hbox{in}\,\R^n\setminus\Omega \\ \end{array} \right. \end{eqnarray*} where $0<s<1,\;n>2s,\;\Omega$ is a bounded smooth domain of $\R^n,$ $(-\Delta)^s$ is the fractional Laplacian of order $s,$ $V$ is the potential energy satisfying suitable assumptions and $\lambda$ is a positive real parameter. The nonlinear term $f$ is a positive nondecreasing convex function, asymptotically linear that is $\lim\limits_{t\rightarrow+\infty}\frac{f(t)}{t}= a \in(0,+\infty).$ We discuss the existence, uniqueness and stability of a positive solution and we also prove the existence of critical value and the uniqueness of extremal solutions. We take into account the types of Bifurcation problem for a class of quasilinear fractional Schr\"{o}dinger equations, we also establish the asymptotic behavior of the solution around the bifurcation point.

Second cohomology of $\mathfrak{aff}(1)$ acting on $n$-ary differential operators

Imed Basdouri,Ammar Derbali,Soumaya Saidi 대한수학회 2019 대한수학회보 Vol.56 No.1

We compute the second cohomology of the affine Lie algebra $\mathfrak{aff}(1)$ on the dimensional real space with coefficients in the space $\mathcal{D}^n_{\underline{\lambda},\mu}$ of $n$-ary linear differential operators acting on weighted densities where $\underline{\lambda}=(\lambda_1,\ldots,\lambda_n)$. We explicitly give $2$-cocycles spanning these cohomology.

Semi-parametric Geographically Weighted Regression Modelling for Flood Damage Assessment

Imee V. Necesito,Tae Sung Cheong,Insang Yu,Sangman Jeong 한국방재학회 2016 Journal of Disaster Management Vol.1 No.3

Climate change has been a global issue since the 19th century. The increase in rainfall variability, which covers the increase in the earth’s total precipitation, will definitely lead to frequent and more severe flood disasters. As the damage increases year after year with floods as the most costly disaster among these hazards, Korea has to improve its technological responses and countermeasures. This study aims to develop a semi-parametric geographically weighted regression which can estimate a flood damage of Gunsan City. The model include parameters like flood depth, flood damage, flood duration, inundated area, family income and land price. This study collects flood depths, flood duration from GIS based flood inundation map and flood damages of local buildings from damages report collected by local government after flooding on August, 2012 in Gunsan City. Flood damage estimation of residential, commercial and agricultural facilities was done by Ordinary Least Squares and Geographically Weighted Regression using collected data. Considering the building and GIS-based spatial information, flood damage by GWR is more appropriate than OLS.

Analysis on Rainwater Harvesting System as a Source of Non-Potable Water for Flood Mitigation in Metro Manila

Imee V. Necesito,Micah Lourdes A. Felix,Lee-Hyung Kim,Tae Sung Cheong,Sangman Jeong 한국습지학회 2013 한국습지학회지 Vol.15 No.2

전 세계 적으로 발생하고 있는 국지성 집중호우, 가뭄, 혹서, 태풍, 해수면 상승 등과 같은 징후는 기후변화가 진행되고 있음을 보여준다. 이러한 기후변화로 인해 일정빈도이상의 과도한 강우가 발생하면 필리핀의 마닐라는 높은 도시화와 홍 수에 취약한 구조 때문에 홍수피해가 빈번하게 발생한다. 마닐라의 홍수조절 기능 및 생활용수 공급은 Angat댐을 통해서 만 관리되기 때문에 홍수방지와 원활한 물공급을 위해 가정용우수저류시설은 최적의 대체자원이 될 수 있다. 가정용우수 저류시설에 의해 공급되는 물은 여과 및 살균과 같은 수처리 과정을 거쳐 식수로 사용될 수 있으며 수처리 과정을 거치 지 않은 잡용수는 세정, 세차, 청소 등의 목적으로 사용할 수 있다. 본 연구에서는 다양한 기후조건을 적용하여 가정용우 수저류시설의 잠재가용량과 잠재가용성을 결정하기 위해 마닐라에 위치한 5개 강우관측소에서 갈수해, 평수해, 강수해로 구분하여 강우자료를 수집하였다. 필리핀은 대부분의 지역이 도시화되어 과도한 강우 발생시 많은 양의 우수가 발생되었 으며 본 연구의 결과를 통해 가정용우수저류시설의 사용은 잡용수의 대체자원으로서 적절한 대안이 될 것으로 판단된다.

Recent Philippine Flood Disasters: 2009 Typhoon Ondoy and Pepeng

Imee V,Necesito,Insang Yu,Sangman Jeong 한국방재학회 2016 Journal of Disaster Management Vol.1 No.1

Abstract Natural disasters are out of control phenomena that continue to devastate even the most advanced countries in the world. Flood disaster is one of the most serious natural hazards for human societies which cause damages to properties as well as loss of human lives. A country, such as the Philippines, which is bounded by limited funds, is most likely to have a public outcry in times of catastrophes like intense floods. This paper examines the impacts of the 2009 Ondoy and Pepeng flood in view of the Philippines’ productive and social sectors as well as presents a glimpse on the economic conditions of the urban and rural poor communities and how they survived the hazards of the said catastrophes amid limited support from the government and other institutions. Data from the studies funded by the different institutions both local and international were used in order to evaluate the damages and losses on the economic and social perspective of the country during the said two catastrophic events. This assessment, backed up by previous actual observations, will help the government and civil society groups to refine and apply different recovery and reconstruction strategies for the benefit of the entire country. Abstract Natural disasters are out of control phenomena that continue to devastate even the most advanced countries in the world. Flood disaster is one of the most serious natural hazards for human societies which cause damages to properties as well as loss of human lives. A country, such as the Philippines, which is bounded by limited funds, is most likely to have a public outcry in times of catastrophes like intense floods. This paper examines the impacts of the 2009 Ondoy and Pepeng flood in view of the Philippines’ productive and social sectors as well as presents a glimpse on the economic conditions of the urban and rural poor communities and how they survived the hazards of the said catastrophes amid limited support from the government and other institutions. Data from the studies funded by the different institutions both local and international were used in order to evaluate the damages and losses on the economic and social perspective of the country during the said two catastrophic events. This assessment, backed up by previous actual observations, will help the government and civil society groups to refine and apply different recovery and reconstruction strategies for the benefit of the entire country.

Agriculture in Tunisia: The challenge between Resources and Climate

( Imed Ben Aissa ),( Mansour Mohsen ) 한국국제농업개발학회 2011 한국국제농업개발학회 춘계학술발표논문집 Vol.2011 No.-

Semi-parametric Geographically Weighted Regression Modelling for Flood Damage Assessment in Gunsan City, Korea

Imee V. Necesito,Tae Sung Cheong,Insang Yu,Sangman Jeong 한국방재학회 2015 한국방재학회 학술발표대회논문집 Vol.14 No.-

Climate change has been a global issue since the 19th century. The increase in rainfall variability, which covers the increase in the earth’s total precipitation, will definitely lead to frequent and more severe flood disasters. As the damage increases year after year with floods as the most chronic and costly disaster among these hazards, Korea has to improve its technological responses and countermeasures to better visualize the hazards brought about by such disasters. Gunsan City ranked number eight in the country’s most susceptible region to floods. From 2004 to 2013, Korea has experienced a total of 174 flood disasters which were estimated to cost USD 7.32 billion. But reports showed that the total expenditure of the government amounted to 1.4 times the estimated losses and damages and the private companies have spent twice the said estimated amount. To summarize, the post-disaster loss and damage reports showed underestimated values. This study aims to develop a semi-parametric geographically weighted regression which can implement a flood damage estimation model of Gunsan City. The model building process include parameters like flood depth, flood duration, inundated area, family income and land price. The datasets are composed of both untransformed and transformed data (using Box-Cox Method). Both Ordinary Least Squares (OLS) Regression and Geographically Weighted Regression (GWR) were evaluated in this study, but the search for best fit resulted to the use of GWR.

2013 MONSTER TYPHOON: HAIYAN

Imee V. Necesito 한국방재학회 2014 한국방재학회지 Vol.14 No.1

Bioconversion of Crude Oil Production Sludge into Soil Conditioner Using Sawdust as Organic Amendment

Ime R. Udotong,Justina I. Udotong,Edu Inam,김경웅 한국자원공학회 2011 Geosystem engineering Vol.14 No.2

Nigeria is a major oil producer in Africa and the World, with significant oil exploration and production activities. These vast oil activities pose a challenge in disposal of oily sludge. The objective of this study was to adopt the principles of biotechnological wastes - to - wealth conversion for the utilization of abundant oily sludge waste. Various sawdust/oily sludge (SD/OS) ratios were used for composting for 21 weeks with sawdust (SD), oily sludge (OS) and untreated soil used as controls. Total heterotrophic bacterial count for SD/OS ratios used ranged between 7.4 and 17.4 x 106 cfu/g and between 6.2 and 18.4 x 106 cfu/g for controls. Hydrocarbon utilizing bacterial counts ranged between 5.9 and 9.0 x 106 cfu/g for SD/OS ratios and between 5.4 and 5.8 x 106cfu/g for controls while total fungal counts for SD/OS ratios used ranged between 4.5 and 5.0 x 107cfu/g and between 3.25 and 5.50 x 107 cfu/g for controls. Hydrocarbon utilizing fungal counts ranged between 3.50 and 4.25 x 107 cfu/g for SD/OS ratios and between 3.00 and 5.25 x 102cfu/g for controls. Predominant bacterial genera isolated were Micrococcus, Flavobacterium, Pseudomonas,Acinetobacter and Staphylococcus while fungal genera were Aspergillus, Penicillium, Saccharomyces and Candida. Nutrient levels for nitrogen, potassium, phosphorus, magnesium, iron and zinc reduced between weeks 0 – 21. Microbial counts increased between weeks 0 and 7 and decreased between weeks 14 and 21 of composting for SD/OS ratios, SD and OS. SD/OS ratios 1:1, 4:1, 8:1, 16:1 caused the most positive significant effects on plant growth. This research shows that oily sludge from oil activities can be converted to soil conditioner to enhance agricultural productivity and thus ensure food security.