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Assessment of the spatial extent of permafrost in the Upper Indus Basin(UIB)

Journal of Mountain Science 2023年第6期20卷 1508-1525页

作者： Wasim HASSAN G.JEELANI a.p.dimri Marcus NüSSER Department of Earth Sciences University of KashmirSrinagar 190006India School of Environmental Sciences Jawaharlal Nehru UniversityNew Delhi 110067India Department of Geography South Asia Institute(SAI)Heidelberg UniversityHeidelberg 69115Germany Heidelberg Centre for the Environment(HCE) Heidelberg UniversityHeidelberg 69120Germany

Climate change differentially influences the frozen ground,a major dynamic component of the cryosphere,on a local and regional *** the warming climate with pronounced effects reported at higher altitudes,the characterization of the frozen ground is very important in the Upper Indus Basin(UIB),an important and critical region with respect to climate and hydro-glaciological *** this study,the efficiency and reliability of the surface frost number model are assessed in delineating the spatial extent of different classes of frozen ground in the *** daily MODIS land surface temperature(LST)with ground surface temperature(GST)and surface geomorphological expressions as ground validation datasets are used jointly in efficiently determining the extent of different classes of frozen ground(continuous and discontinuous permafrost and seasonal frost).The LST and GST resonate with each other in the annual cycle of temperature variation,however,with mean annual LST exhibiting an offset(cold bias)of 5 to 7℃relative to mean *** study shows that the highest permafrost extent is observed in areas where the lowest thinning rates of glacier ice are reported and vice *** surface frost number model categorizes an area of 38%±3%and 15%±3%in the UIB as permafrost and seasonal frost,*** on the altitude model,the lower limit of alpine permafrost is approximated at a mean altitude of 4919±590 m *** the *** present study acts as preliminary work in the data sparse and inaccessible regions of the UIB in characterizing the frozen and unfrozen ground and may act as a promising input data source in glaciohydro-meteorological models for the Himalaya and *** addition,the study also underlines the consideration of this derelict cryospheric climatic variable in defining and accounting for the sustainable development of socio-economic systems through its intricate ramification on agricultural activity,landscape stability and infrastruc

关键词： Upper Indus Basin Land surface temperature Ground surface temperature Surface frost number permafrost Seasonal frost

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An efficient algorithm to clip a 2D-polygon against a rectangular clip window

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Applied Mathematics(A Journal of Chinese Universities) 2022年第1期37卷 147-158页

作者： Sushil Chandra dimri Umesh Kumar Tiwari Mangey Ram Department of Computer Science and Engineering Graphic Era(Deemed to be University)DehradunUttarakhandIndia

polygon clipping is of great importance in computer *** of the popular algorithms to clip a polygon is Cohan–Sutherland Hodgeman algorithm which is based on line ***–Sutherland Hodgeman algorithm clips the polygon against the given rectangular clip window with the help of line clipping ***–Sutherland algorithm requires traversing the polygon in anti clockwise direction(positive orientation).In this work we propose an efficient polygon clipping algorithm against a rectangular clip *** algorithm uses parametric representation of polygon *** the concept of point clipping,we can find required intersection points of edges of polygon with clip window *** suited numerical illustrations are used to explain the proposed polygon clipping *** proposed algorithm is computationally less expensive and comprehensive.

关键词： point clipping polygon clipping clip window line segment computational complexity

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Spatio-temporal variation of trace elements distributed over surface water of Upper Ganga River Basin in Western Himalayan Region

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Journal of Mountain Science 2023年第1期20卷 145-162页

作者： Deepika dimri Ambika KUMAR DeepakKumar MISHRA Archana SHARMA Doon University Dehradun248012India Bhagalpur National College Bhagalpur812007India

The rivers draining from the Himalayan range distribute enormous amount of fresh water to the people living in downstream *** metals flowed with river water can lead to serious impact on ecological system and human ***,the documentation on trace elements of Himalayan rivers is inadequately *** current study deals with the spatial and temporal variability of the major and trace elements of Ganga river water in epirhithron,metarhithron and hyporhithron zone belonging to Himalayan *** samples from nineteen monitoring locations were collected in pre-monsoon(May-June),monsoon(AugustSeptember)and post-monsoon(December)seasons and subjected to be assessed for 20 elements(Ag,Al,Ba,Cd,Ca,Cr,Cu,Fe,Ga,K,Mn,Mg,Na,Ni,pb,Sr,Th,U,Zn,and Zr)using ICp-OES(Inductively Coupled plasma-Optical Emission Spectrometer).Different water pollution indexes such as HpI(Heavy Metal pollution Index),MI(Metal Index)and pI(pollution Index)were used to describe current water quality status at each monitoring station under particular classified ecological *** studied stations in hyporhithron zone had the value of Metal Index(MI>1),indicating threshold of ***,the highest values of HpI in hyporhithron zone correspond to poor water quality *** with poor water quality were also found to be contaminated as per the pollution Index(pI),exhibiting high concentrations for element(Fe).However,the epirhithron and metarhithron zone in Himalayan segment showed excellent water quality mainly contributed from natural *** Analysis(CA)and principal Component Analysis(pCA)were applied to identify the main influential sources for Ganga river water *** Kriging interpolation method was also applied to prepare spatial distribution map of computed indexes(HpI,MI,and pI).With the help of index of local Moran’s I(LMI),identified spatial clusters and spatial outliers revealed the elevated concentration of most elements in hyporhithr

关键词： Trace elements Spatial variation Temporal variation Surface water Ganga River Basin ICp-OES

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Fixed point Theorems for Weakly Contractive Mappings in Ordered Metric Spaces with an Application

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Analysis in Theory and Applications 2022年第2期38卷 232-242页

作者： Gopi prasad Ramesh Chandra dimri Department of Mathematics HNB Garhwal UniversitySrinagar Garhwal 246174India

In this paper,we prove fixed point theorem for weakly contractive mappings using locally T-transitivity of binary relation and presenting an analogous version of Harjani and Sadarangani theorem involving more general relation theoretic metrical *** fixed point results under universal relation reduces to Harjani and Sadarangani[Nonlinear Anal.,71(2009),3403-3410]fixed point *** this way we also generalize some of the recent fixed point theorems for weak contraction in the existing literature.

关键词： R-continuity locally T-transitive binary relation weakly contractive map

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Inundation Studies Along the East Coast of India due to Tsunamigenic Earthquakes in North-Andaman and Car Nicobar Subduction zone

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地学前缘 2009年第S1期16卷 65-65页

作者： R.Krishna Kumar Kirti Srivastava V.Swaroopa Rani V.p.dimri National Geophysical Research Institute(NGRI)(Council of Scientific and Industrial Research)

The Sumatra-Andaman arc is an active subduction zone and had generated several destructive Tsunamis in the *** this paper we have analyzed two historical Tsunamigenic earthquakes from this region. One of the historical earthquake is the earthquake of 26th June 1941 in the North Andaman region,which was one of the strongest in the Andaman Sea and Bay of Bengal of magnitude M_w=*** earthquake had triggered tsunami which affected the east coast of *** other is the earthquake in Car Nicobar region on 31 st December 1881 of magnitude M_w=7.9. This submarine earthquake beneath the

关键词： inundation tsunamigenic earthquakes tsunami wave propagation run-ups

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Xeroderma pigmentosa with ocular association: Case report

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Case Reports in Clinical Medicine 2013年第8期2卷 466-469页

作者： Achyut N. pandey Krishna Kuldeep Ameeta Koul Manoj Tyagi parul Singh parmeshwari Das Sharma Deepak dimri Department of Dermatology VCSG Government Medical College and Research Institute Srinagar Garhwal India Department of Ophthalmology VCSG Government Medical College and Research Institute Srinagar Garhwal India Department of Ophthalmology VCSG Government Medical College and Research Institute Srinagar Garhwal India

Xeroderma pigmentosum is a rare, autosomal recessive disease caused by a defect in DNA repair. patients with xeroderma pigmentosum often have cutaneous and ocular sun sensitivity, freckle-like skin pigmentation, multiple skin and eye cancers, and, in some patients, progressive neurodegeneration. Xeroderma pigmentosum predominantly affects the ultraviolet (UV) exposed ocular surface, resulting in eyelid atrophy and cancers, corneal dryness, exposure keratopathy, and conjunctival tumors. General features included parental consanguinity (40%), familiarity (60%), onset of symptoms in the first 2 years (50%), malignant skin neoplasms (60%), and carcinoma of the tongue (20%). Among the ocular features, 50% of patients presented with photophobia. Lid freckles or atrophic skin lesions were seen in all patients. Lower lid tumours were seen in 30%, chronic conjunctival congestion in 40%, corneal opacification in 40%, squamous cell carcinoma of limbus in 20%, bilateral pterygium in 40%, and visual impairment in 50%. We report the clinical history and ocular pathology of a boy who is having xeroderma pigmentosum with ocular manifestations. The ophthalmic manifestations of xeroderma pigmentosum are discussed and reviewed with respect to this report and other cases in the literature. These cases illustrate the role of DNA repair in protection of the eyes from UV damage and neuron degeneration of the retina.

关键词： Ciliary Body Hamartoma Ocular pathology Optic Atrophy Xeroderma pigmentosum pigmentary Retinal Degeneration

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科依纳水库地区一次4级地震的预报获得成功!

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世界地震译丛 2006年第4期37卷 79-80页

作者： H．Gupta D．Shashidhar M．periera p．Mandal V．p.dimri 杨智娴（译）陈运泰（校）不详中国地震局地球物理研究所

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Jaipur珀尔时装设计学院

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建筑技艺 2010年第6期16卷 66-73页

作者： Morphogenesis Andre J Fanthome Edmund Sumner 李昭君 Sonali Rastogi Rudrajit Sabhaney Anna Kristiana Bergbom Shruti dimri John Alok Decruz Oracles

经济的快速发展带来对普遍现代主义和新奇事物的盲目追寻，这成为了困扰当代印度建筑界的一个重要问题。如何将建筑传统与场地精神融入新的建筑形式之中成为建筑界最具挑战性的任务。Jaipur是拉奇普特、莫沃尔和其他多种文化的汇集地，... 详细信息

经济的快速发展带来对普遍现代主义和新奇事物的盲目追寻，这成为了困扰当代印度建筑界的一个重要问题。如何将建筑传统与场地精神融入新的建筑形式之中成为建筑界最具挑战性的任务。Jaipur是拉奇普特、莫沃尔和其他多种文化的汇集地，也是白话印度语的重要基地。在这样一个具有悠久历史的地区建造一所现代的先锋设计学院，既要强调新的时代特征，又要突出当代社会背景，并与传统有机结合，启发现代社会条件下的设计学学生们体会到“当代”的情感。

关键词：设计学院时装建筑传统社会背景现代主义建筑形式建筑界挑战性

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科依纳可能发生一次5级地震

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世界地震译丛 2006年第4期37卷 81-83页

作者： H. Gupta p. Mandal H.V.S. Satyanarayana D. Shashidhar B. Sairam M. Shekar A. Singh E.U. Devi M. Kousalya N.p. Rao V.p. dimri 杨智娴（译）陈运泰（校）不详中国地震局地球物理研究所

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