检索结果-南通市图书馆

Secure storage and accessing the data in cloud using optimized homomorphic encryption

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Control and Decision 2023年第1期10卷 90-98页

作者： S.Gnana Sophia K.K.Thanammal S.S.Sujatha Department of Computer Science and Application MS UniversityS.T.Hindu CollegeNagercoilIndia

Different efforts have been undertaken to customizing a security and privacy concern in clouddata access. Therefore, the security measures are reliable and the data access was verified as themajor problem in the cloud environment. To overcome this problem, we proposed an efficientdata access control using optimized homomorphic encryption (HE). Because users outsourcetheir sensitive information to cloud providers, data security and access control is one of themost difficult ongoing cloud computing research projects. Existing solutions that rely on cryptographictechnologies to address these security issues result in significant complexity for bothdata and cloud service providers. The experimental results show that the key generation is 7.6%decreased by HE and 14.14% less than the proposed method. The encryption time is 11.34% lessthan the optimized HE and 23.28% decreased by ECC. The decryption time is 13.18% and 24.07%when compared with HE and ECC respectively.

关键词： Homomorphic encryption(HE) elliptical curve cryptography(ECC) data security cloud computing data access

A local refinement purely meshless scheme for time fractional nonlinear Schrodinger equation in irregular geometry region

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics B 2021年第2期30卷 164-175页

作者： Tao Jiang Rong-Rong Jiang Jin-Jing Huang Jiu Ding Jin-Lian Ren School of Mathematical Sciences Yangzhou UniversityYangzhou 225002China Department of Mathematics University of Southern MississippiHattiesburgMS 39406-5045USA

A local refinement hybrid scheme(LRCSPH-FDM)is proposed to solve the two-dimensional(2D)time fractional nonlinear Schrodinger equation(TF-NLSE)in regularly or irregularly shaped domains,and extends the scheme to predict the quantum mechanical properties governed by the time fractional Gross-Pitaevskii equation(TF-GPE)with the rotating Bose-Einstein *** is the first application of the purely meshless method to the TF-NLSE to the author’s *** proposed LRCSPH-FDM(which is based on a local refinement corrected SPH method combined with FDM)is derived by using the finite difference scheme(FDM)to discretize the Caputo TF term,followed by using a corrected smoothed particle hydrodynamics(CSPH)scheme continuously without using the kernel derivative to approximate the spatial ***,the local refinement technique is adopted to reduce the numerical *** numerical simulations,the complex irregular geometry is considered to show the flexibility of the purely meshless particle method and its advantages over the grid-based *** numerical convergence rate and merits of the proposed LRCSPH-FDM are illustrated by solving several 1D/2D(where 1D stands for one-dimensional)analytical TF-NLSEs in a rectangular region(with regular or irregular particle distribution)or in a region with irregular *** proposed method is then used to predict the complex nonlinear dynamic characters of 2D TF-NLSE/TF-GPE in a complex irregular domain,and the results from the posed method are compared with those from the *** the numerical results show that the present method has a good accuracy and flexible application capacity for the TF-NLSE/GPE in regions of a complex shape.

关键词： Caputo fractional derivative nonlinear Schrodinger/Gross-Pitaevskii equation corrected smoothed particle hydrodynamics irregularly domain

Bulk heterojunction thin film formation by single and dual feed ultrasonic spray method for application in organic solar cells

在线全文

学校读者我要写书评

暂无评论

Journal of Semiconductors 2016年第9期37卷 47-50页

作者： D.M.Marathe H.S.Tarkas M.S.Mahajan G.S.Lonkar S.R.Tak J.V.Sali Organic Photovoltaic Laboratory North Maharashtra UniversityJalgaon(MS)425001India

We here present a way of preparing the polymer： fullerene BHJ using dual feed method which can lead to formation of pure phases. In this report, we present results of our initial experiments in this *** effect of process parameters on the thickness and surface roughness of the active layer has been *** structural and optical properties have been studied using the optical microscope, UV–visible spectroscopy and photoluminescence spectroscopy. Significant PL quenching indicates efficient charge separation in the BHJ formed using this technique. We have also compared the BHJ thin films prepared with this dual feed ultrasonic technique with the single feed spray method. The BHJ formed using this technique has been used as an active layer in OSC.

关键词： P3HT PCBM dual feed ultrasonic spray method organic solar cell

Effects of vegetation on flow conveyance and sediment transport capacity

在线全文

学校读者我要写书评

暂无评论

International Journal of Sediment Research 2009年第3期24卷 247-259页

作者： Weiming WU1 and Zhiguo HE21 Research Assoc. Prof., National Center for Computational Hydroscience and Engineering, University of Mississippi, University, ms 38677, USA, 2 Postdoctoral Research Assoc., National Center for Computational Hydroscience and Engineering, University of Mississippi, University, ms 38677, USA.Present at Department of Hydraulic and Ocean Engineering, Zhejiang University, Hangzhou 310058, China, Research Assoc. Prof. National Center for Computational Hydroscience and Engineering University of Mississippi University MS 38677 USA Postdoctoral Research Assoc. National Center for Computational Hydroscience and Engineering University of Mississippi University MS 38677 USA

In-stream and riparian vegetation may significantly affect flow and sediment transport in vegetated channels. A hydraulic model has been developed in this paper to compute the flow discharge in channels with rigid and flexible vegetation under emergent and submerged conditions. An empirical formula has also been presented to determine the bed-load discharge in vegetated channels. The model has been tested against experimental and field data available in the literature. The computed flow discharge and bed-load transport rate agree well with the measured data.

关键词： Vegetation Flow resistance Sediment transport Bed load

Humanity and Paternal Eros: The Father-Son Relationship in Comparative Perspective

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Philosophy in China 2015年第4期10卷 629-646页

作者： LAN Fei Department of Philosophy and Religion The University of Mississippi University MS 38677USA

This paper examines the human relational patterns presented in the philosophical writings of the Confucian thinker Dai Zhen (戴震1724-77) and the Jewish philosopher Emmanuel Levinas’s (1906-95) Totality and Infinity to uncover the ethical significance of the father-son relationship. I argue that for both thinkers the father-son relation is not just one type of human relationship among other social dyads, but rather, of greater significance, serves as the paradigmatic model of the ethical human relationship in bringing to light the idea of the ethical self as a responsible being in relation to others.

关键词： Confucianism Jewish thought Dai Zhen Emmanuel Levinas the father-son relationship responsibility

Combination of epidural electrical stimulation with ex vivo triple gene therapy for spinal cord injury:a proof of principle study

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2021年第3期16卷 550-560页

作者： Filip Olegovich Fadeev Farid Vagizovich Bashirov Vahe Arshaluysovich Markosyan Andrey Alexandrovich Izmailov Tatyana Vyacheslavovna Povysheva Mikhail Evgenyevich Sokolov Maxim Sergeevich Kuznetsov Anton Alexandrovich Eremeev Ilnur Ildusovich Salafutdinov Albert Anatolyevich Rizvanov Hyun Joon Lee Rustem Robertovich Islamov Department of Medical Biology and Genetics Kazan State Medical UniversityKazanRussia Federal University KazanRussia Department of Neurology University of Mississippi Medical CenterJacksonMSUSA Research Service G.V.(Sonny)Montgomery VA Medical CenterJacksonMSUSA

Despite emerging contemporary biotechnological methods such as gene-and stem cell-based therapy,there are no clinically established therapeutic strategies for neural regeneration after spinal cord *** previous studies have demonstrated that transplantation of genetically engineered human umbilical cord blood mononuclear cells producing three recombinant therapeutic molecules,including vascular endothelial growth factor(VEGF),glial cell-line derived neurotrophic factor(GDNF),and neural cell adhesion molecule(NCAM)can improve morpho-functional recovery of injured spinal cord in rats and *** investigate the efficacy of human umbilical cord blood mononuclear cells-mediated triple-gene therapy combined with epidural electrical stimulation in the treatment of spinal cord injury,in this study,rats with moderate spinal cord contusion injury were intrathecally infused with human umbilical cord blood mononuclear cells expressing recombinant genes VEGF165,GDNF,NCAM1 at 4 hours after spinal cord *** days after injury,epidural stimulations were given simultaneously above the lesion site at C5(to stimulate the cervical network related to forelimb functions)and below the lesion site at L2(to activate the central pattern generators)every other day for 4 *** subjected to the combined treatment showed a limited functional improvement of the knee joint,high preservation of muscle fiber area in tibialis anterior muscle and increased H/M ratio in gastrocnemius muscle 30 days after spinal cord ***,beneficial cellular outcomes such as reduced apoptosis and increased sparing of the gray and white matters,and enhanced expression of heat shock and synaptic proteins were found in rats with spinal cord injury subjected to the combined epidural electrical stimulation with gene *** study presents the first proof of principle study of combination of the multisite epidural electrical stimulation with ex vivo triple gene therapy(VEGF,GDNF and NCAM

关键词： adenoviral vector epidural electrical stimulation gene therapy glial cell-line derived neurotrophic factor human umbilical cord blood mononuclear cell neural cell adhesion molecule spinal cord injury vascular endothelial growth factor

Temperature-Induced Stress on Growth and Expression of Hsp in Freshwater alga Scenedesmus quadricauda

在线全文

学校读者我要写书评

暂无评论

Biomedical and Environmental Sciences 2006年第6期19卷 414-421页

作者： S. ZARGAR K. KRISHNAMURTHI S. SARAVANA DEVI T. K. GHOSH T. CHAKRABARTI Environmental Biotechnology Division National Environmental Engineering Research Institute (NEERI)Nehru MargNagpur-440 020 (MS)India

Objective To investigate the impact of various levels of sublethal temperature （26℃, 31 ℃, 33℃, 36℃, and 39℃） on growth and heat shock protein （hsp） expression in freshwater green alga Scenedesmus quadricauda. Methods Impact of selected levels of temperature on growth rate （based on optical density）, population count, chlorophyll-a and biomass of the alga was evaluated in artificial growth medium for 19 days. To determine the induction of hsp in the alga, it was exposed to selected temperature levels for 3 h and further kept for 6 h at culturing condition at 26℃. Induction of hsp was confirmed by immuno-detection followed by SDS-polyacrylamide gel electrophoresis. Results The selected growth parameters such as growth rate, population count, chlorophyll-a and biomass were reduced significantly （P〈0.001） at 39℃. However, hsp 70 expression was observed only at 39℃. Conclusion Temperature up to 36℃ may be considered as the limit of safe exposure for thermal, stress for the alga Scenedesmus quadricauda.

关键词： Temperature Scenedesmus quadricauda Heat shock protein (Hsp)

Dredging effects on selected nutrient concentrations and ecoenzymatic activity in two drainage ditch sediments in the lower Mississippi River Valley

在线全文

学校读者我要写书评

暂无评论

International Soil and Water Conservation Research 2017年第3期5卷 190-195页

作者： Matt Moore Martin A.Locke Michael Jenkins Robert W.Steinriede Daniel S.McChesney USDA-Agricultural Research Service National Sedimentation Laboratory598 McElroy DriveOxfordMS 38655USA

Agricultural drainage ditches are conduits between production acreage and receiving aquatic *** overlooked for their mitigation capabilities,agricultural drainage ditches provide an important role for nutrient transformation via microbial *** in ecoenzyme activities have been used to elucidate microbial metabolism and resource demand of microbial communities to better understand the relationship between altered nutrient ratios and microbial activity in aquatic *** agricultural drainage ditches,one in the northeast portion of the Arkansas Delta and the other in the lower Mississippi Delta,were monitored for a *** samples were collected prior to each ditch being dredged(cleaned),and subsequent post-dredging samples occurred as soon as access was *** samples were then collected throughout a year to examine effects of dredging on selected nutrient concentrations and ecoenzymatic activity recovery in drainage ditch *** concentrations in sediments after dredging decreased 33–66%,depending on ditch and phosphorus extraction ***,ecoenzymatic activity was significantly decreased in most sediment samples after *** diacetate hydrolysis activity,an estimate of total microbial activity,decreased 56–67%after dredging in one of the two *** sample sites also had significant phosphorus and ecoenzymatic activity differences between the post-dredge samples and the year-long follow-up *** indicate microbial metabolism in dredged drainage ditches may take up to a year or more to recover to pre-dredged ***,while sediment nutrient concentrations may be decreased through dredging and removal,runoff and erosion events over time tend to quickly replenish nutrient concentrations in replaced *** nutrient dynamics and microbial metabolism within agricultural drainage ditches is a crucial step toward addressing issues of nutri

关键词： Phosphorus FDA Denitrification Mehlich III Microbial Metabolism

History and evaluation of national-scale geochemical data sets for the United States

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Geoscience Frontiers 2013年第2期4卷 167-183页

作者： David B.Smith Steven M.Smith John D.Horton U.S.Geological Survey.Denver Federal Center MS 973.DenverCO 80225USA

Six national-scale,or near national-scale,geochemical data sets for soils or stream sediments exist for the United *** earliest of these,here termed the ＇Shacklette＇ data set,was generated by a U.S. Geological Survey（USGS） project conducted from 1961 to *** project used soil collected from a depth of about 20 cm as the sampling medium at 1323 sites throughout the conterminous *** National Uranium Resource Evaluation Hydrogeochemical and Stream Sediment Reconnaissance（NUREHSSR） Program of the *** of Energy was conducted from 1975 to 1984 and collected either stream sediments,lake sediments,or soils at more than 378,000 sites in both the conterminous *** *** sampled area represented about 65%of the *** Natural Resources Conservation Service（NRCS）,from 1978 to 1982,collected samples from multiple soil horizons at sites within the major crop-growing regions of the conterminous *** data set contains analyses of more than 3000 *** National Geochemical Survey,a USGS project conducted from 1997 to 2009,used a subset of the NURE-HSSR archival samples as its starting point and then collected primarily stream sediments, with occasional soils,in the parts of the *** covered by the NURE-HSSR *** data set contains chemical analyses for more than 70,000 *** USGS,in collaboration with the Mexican Geological Survey and the Geological Survey of Canada,initiated soil sampling for the North American Soil Geochemical Landscapes Project in *** of three horizons or depths at more than 4800 sites in the *** completed in 2010,and chemical analyses are currently *** NRCS initiated a project in the 1990s to analyze the various soil horizons from selected pedons throughout the *** data set currently contains data from more than 1400 *** paper（1） discusses each data set in terms of its purpose,sample collection protocols,and analytical methods;and（2） evaluates each data set in terms

关键词： Geochemical mapping National-scale geochemical data Geochemical baselines United States