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| 1 | Is multi-hazard mapping effective in assessing natural hazards and integrated watershed management?显示文摘Natural hazards are often studied in isolation.However,there is a great need to examine hazards holistically to better manage the complex of threats found in any region.Many regions of the world have complex hazard landscapes wherein risk from individual and/or multiple extreme events is omnipresent.Extensive parts of Iran experience a complex array of natural hazards-floods,earthquakes,landslides,forest fires,subsidence,and drought.The effectiveness of risk mitigation is in part a function of whether the complex of hazards can be collectively considered,visualized,and evaluated.This study develops and tests individual and collective multihazard risk maps for floods,landslides,and forest fires to visualize the spatial distribution of risk in Fars Province,southern Iran.To do this,two well-known machine-learning algorithms-SVM and MARS-are used to predict the distribution of these events.Past floods,landslides,and forest fires were surveyed and mapped.The locations of occurrence of these events(individually and collectively) were randomly separated into training(70%) and testing(30%) data sets.The conditioning factors(for floods,landslides,and forest fires) employed to model the risk distributions are aspect,elevation,drainage density,distance from faults,geology,LULC,profile curvature,annual mean rainfall,plan curvature,distance from man-made residential structures,distance from nearest river,distance from nearest road,slope gradient,soil types,mean annual temperature,and TWI.The outputs of the two models were assessed using receiver-operating-characteristic(ROC) curves,true-skill statistics(TSS),and the correlation and deviance values from each models for each hazard.The areas-under-the-curves(AUC) for the MARS model prediction were 76.0%,91.2%,and 90.1% for floods,landslides,and forest fires,respectively.Similarly,the AUCs for the SVM model were 75.5%,89.0%,and 91.5%.The TSS reveals that the MARS model was better able to predict landslide risk,but was less able to predict flood-risk patterns and forest-fire risk.Finally,the combination of flood,forest fire,and landslide risk maps yielded a multi-hazard susceptibility map for the province.The better predictive model indicated that 52.3% of the province was at-risk for at least one of these hazards.This multi-hazard map may yield valuable insight for land-use planning,sustainable development of infrastructure,and also integrated watershed management in Fars Province. | Hamid Reza Pourghasemi Amiya Gayen Mohsen Edalat Mehrdad Zarafshar John P.Tiefenbacher | 2020 | Geoscience Frontiers2020，11，4： | 4 |
| 2 | Wave Interaction with Dual Circular Porous Plates显示文摘在这份报纸,我们调查了思考,二个对称的圆形弧形的薄多孔的盘子的一个系统的传播在线性理论的上下文以内在深水里沉没了。hypersingular 积分方程技术被用来算术地分析这个问题。不可分的方程被把草地不可分的定理用于基本潜在的功能和散布潜在的功能进一个合适的液体区域提出,然后在多孔的板表面上使用边界条件。这些在盘子的尖端用潜在的功能的行为用一个 expansion-cum-collocation 方法近似被解决。这个方法最终为思考和传播系数和水动力学力量部件生产很好的数字近似。数字结果为弧的许多布局对波浪数字图形地被描绘。一些结果与在有好同意的文学可得到的双僵硬的板系统的类似的配置的已知的结果相比。 | Arpita Mondal R. Gayen | 2015 | Journal of Marine Science and Application2015，14，4： | 2 |
| 3 | Two-photon excitation of the lowest 4f 2→4f 5d near-ultraviolet transitions in Pr3+ : Y3Al5O12 显示文摘 | Gayen S K Xie B Q Cheung Y M | 1992 | Phys Rev B1992，45，1： | 2 |
| 4 | Statistical functions used for spatial modelling due to assessment of landslide distribution and landscape-interaction factors in Iran显示文摘Landslides influence the capacity for safe and sustainable development of mountainous environments.This study explores the spatial distribution of and the interactions between landslides that are mapped using global positioning system(GPS) and extensive field surveys in Mazandaran Province,Iran.Point-pattern assessment is undertaken using several univariate summary statistical functions,including pair correlation,spherical-contact distribution,nearest-neighbor analysis,and O-ring analysis,as well as bivariate summary statistics,and a markcorrelation function.The maximum entropy method was applied to prioritize the factors controlling the incidence of landslides and the landslides susceptibility map.The validation processes were considered for separated 30%data applying the ROC curves,fourfold plot,and Cohen’s kappa index.The results show that pair correlation and O-ring analyses satisfactorily predicted landslides at scales from 1 to 150 m.At smaller scales,from 150 to 400 m,landslides were randomly distributed.The nearest-neighbor distribution function show that the highest distance to the nearest landslide occurred in the 355 m.The spherical-contact distribution revealed that the patterns were random up to a spatial scale of 80 m.The bivariate correlation functions revealed that landslides were positively linked to several linear features(including faults,roads,and rivers) at all spatial scales.The mark-correlation function showed that aggregated fields of landslides were positively correlated with measures of land use,lithology,drainage density,plan curvature,and aspect,when the numbers of landslides in the groups were greater than the overall average aggregation.The results of analysis of factor importance have showed that elevation(topography map scale:1:25,000),distance to roads,and distance to rivers are the most important factors in the occurrence of landslides.The susceptibility model of landslides indicates an excellent accuracy,i.e.,the AUC value of landslides was 0.860.The susceptibility map of landslides analyzed has shown that 35% of the area is low susceptible to landslides. | Hamid Reza Pourghasemi Narges Kariminejad Amiya Gayen Marko Komac | 2020 | Geoscience Frontiers2020，11，4： | 2 |
| 5 | Water wave scattering by an ice-strip 显示文摘 | Gayen R Mandal B N Chakrabarti A | 2005 | J Engg Maths2005，53，1： | 1 |
| 6 | Distribution of haploids on the ear显示文摘 | Sarkar K R Prasanna B M Gayen P | 1995 | Maize Genet Coop News Lett1995，69，： | 1 |
| 7 | Chromosome doubling in haploids through colchicines 显示文摘 | Gayen P Maden J K Kumar R | 1994 | Maize Genet Coop News Lett1994，68，： | 1 |
| 8 | Sterol carrier protein-2 overexpression enhances sterol cycling and inhibits cholesterol ester synthesis and high density lipoprotein cholesterol secretion显示文摘 | Baum CL Reschly EJ Gayen AK | 1997 | J Biol Chem1997，272，10： | 1 |
| 9 | Effect of ferulic acid from Hibiscus mutabilis on filarial parasite Setaria cervi: molecular and biochemical approaches显示文摘 | Saini P Gayen P Nayak A | 2012 | Parasitol Int2012，61，4： | 1 |
| 10 | Developments in biobutanol production: Newinsights显示文摘 | KUMAR M GAYEN K | 2011 | Appl Energ2011，88，6： | 1 |
| 11 | Distribution of haploids on the ear显示文摘 | Sarkar K R Prasanna B M Gayen P | 1995 | Maize Genet Coop News Lett1995，69，： | 1 |
| 12 | Evaluation of purgative activity of roots of Rumex nepalensis显示文摘 | Ghosh L Gayen J R Murugesan T | 2003 | Fitoterapiu2003，74，： | 1 |
| 13 | Effect of ferulic acid from Hibiscus mutabilis on filarial parasite Setaria cervi : Molecular and biochemical approaches显示文摘 | Prasanta Saini Prajna Gayen Ananya Nayak Deepak Kumar Niladri Mukherjee Bikas C. Pal Santi P. Sinha Babu | 2012 | Parasitology International2012，，4： | 1 |
| 14 | Molecular evidence of curcumin-induced apoptosis in the filarial worm Setaria cervi显示文摘 | Ananya Nayak Prajna Gayen Prasanta Saini Niladri Mukherjee Santi Sinha Babu | 2012 | Parasitology Research2012，，3： | 1 |
| 15 | Albendazole induces apoptosis in adults and microfilariae of Setaria cervi显示文摘 | A. Nayak P. Gayen P. Saini S. Maitra S.P. Sinha Babu | 2011 | Experimental Parasitology2011，，3： | 1 |
| 16 | Global disturbances in autonomic function yield cardiovascular instability and hypertension in the chromogranin a null mouse 显示文摘 | Gayen JR Gu Y O'Connor DT | 2009 | Endocrinology2009，150，： | 1 |
| 17 | Emerging optical biomedical imaging techniques显示文摘 | R R Alfano | 1996 | Optics & Photonics News1996，7，3： | 1 |
| 18 | Experimental demonstration of an excited-state Faraday filter operating at 532 nm显示文摘 | Billmers R I Gayen S K Squicciarini M F Contarino V M and Scharpf W J | | 0，，01： | 1 |
| 19 | Developments in biobutanol production:New insights显示文摘 | Kumar M Gayen K | 2011 | Applied Energy2011，88，6： | 1 |
| 20 | Global disturbances in autonomic function yield cardiovascular instability and hypertension in the chromogranin a null mouse显示文摘 | Gayen JR Gu Y O'Connor DT | | 0，，11： | 1 |
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