检索结果-南通市图书馆

Sarve:synthetic data and local differential privacy for private frequency estimation

Cybersecurity 2022年第4期5卷 97-116页

作者： Gatha Varmal ritu chauhan Dhananjay Singh Amity Institute of Information Technology Amity UniversityNoidaIndia Center for Computational Biology and Bioinformatics Amity UniversityNoidaIndia Department of Electronics Engineering HUFSSeoulKorea

The collection of user attributes by service providers is a double-edged *** are instrumental in driving statistical analysis to train more accurate predictive models like *** analysis of the collected user data includes frequency estimation for categorical ***,the users deserve privacy guarantees against inadvertent identity *** algorithms called frequency oracles were developed to randomize or perturb user attributes and estimate the frequencies of their *** propose Sarve,a frequency oracle that used Randomized Aggregatable Privacy-Preserving Ordinal Response(RAPPOR)and Hadamard Response(HR)for randomization in combination with fake *** design of a service-oriented architecture must consider two types of complexities,namely computational and *** functions of such systems aim to minimize the two complexities and therefore,the choice of privacy-enhancing methods must be a calculated *** variant of RAPPOR we had used was realized through bloom flters.A bloom filter is a memory-efficient data structure that offers time complexity of O(1).On the other hand,HR has been proven to give the best communication costs of the order of log(b)for b-bits ***,Sarve is a step towards frequency oracles that exhibit how privacy provisions of existing methods can be combined with those of fake data to achieve statistical results comparable to the original *** also implemented an adaptive solution enhanced from the work of Arcolezi et *** use of RAPPOR was found to provide better privacy-utility tradeoffs for specific privacy budgets in both high and general privacyregimes.

关键词： Synthetic data Differential privacy Frequency estimation Frequency oracle Privacy

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Magnetic fabric and geomorphic characteristic of Neotectonic activity along strike direction of North Almora Thrust,Kumaun Lesser Himalaya,India

引用

Geodesy and Geodynamics 2022年第3期13卷 261-274页

作者： ritu chauhan Girish Ch Kothyari Surendra S.Bhakuni Pitamber Dutt Pant Ajay Kumar Taloor CAS in Geology Kumaun UniversityNainitalIndia Institute of Seismological Research RaisanGandhinagar382009India Wadia Institute of Himalayan Geology DehradunIndia Department of Remote Sensing and GIS University of JammuJammuIndia

Structurally,the North Almora Thrust(NAT),is placed in the northern proximity of the Almora Nappe(AN)in the Kumaun Lesser *** NAT is characterized by the presence of a zone of mylonitic rocks of basal Saryu Formation(1800±100 Ma)in the hanging wall and the metasedimentaries of Inner Lesser Himalayan rocks as the footwall *** NAT has been dextrally offset by two estabilished maj or faults *** River Fault(SRF)in Saryu Valley and Dwarahat-Chaukhutia Fault(DCF)in Ramganga *** present study,we identified four new faults,based on field study,geomorphic landform and magnetic fabric *** faults are N-S trending Pancheshwar Fault,NE-SW Rameshwer Fault,NNE-SSW trending Kosi Fault,and NNE-SSW trending Gagas Fault(GF).Our results show that the zone is bound by cross cutting relation with NAT and these fault zones are comparatively more active than other ***,we suggest that the steep and NW-SE orientation of magnetic foliation within the NAT zone is a result of NE-SW oriented progressive regional *** magnetic foliations represent the unseen internal foliations in the rocks developed due to preferred alignment of magnetic minerals and can be found through the Anisotropy of magnetic susceptibility(AMS)*** in the alignment of the field and magnetic foliations are developed due to superimposed brittle deformation along the faults over the pre-existing field *** foliations represent the impact of last stage deformation and significant to find brittle deformation and finite strain in the rocks of the study *** lowering of anisotropy(Pj)away from the fault zone represents distribution of strain across the NAT *** fabric confirms the presence of faults developed across the NAT zone and also explains the deformation pattern along these *** geomorphic anomalies and steepness changes across the NAT zone are correlated with active deformation along the NAT and associated transverse

关键词： North Almora Thrust(NAT) Geomorphology Anisotropy of magnetic susceptibility Neotectonics Kumaun Lesser Himalaya

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Preparation, characterization and luminescence behavior of some samarium complexes

引用

Rare Metals 2021年第9期40卷 2618-2626页

作者： Archana chauhan ritu Langyan Department of Chemistry Kurukshetra UniversityKurukshetra 136119India

The synthesis of luminescent complexes of Sm(III) with the general formula [Sm(L)_(3)·(X)] was done in powder form. In the formula, L is 6-methyl-4-oxo-4 H-1-benzopyran-3-carboxaldehyde and X represents 2H_(2)O(C1), 1,10-phenanthroline(C2), 2,20-bipyridine(C3);bathophenanthroline(C4) and neocuproine(C5). The complexes were characterized by using various analytical and spectroscopic tools like elemental analysis, electrospray ionization mass spectrometry(ESI–MS+), Fourier transform infrared spectroscopy(FTIR), ultraviolet–visible(UV–Vis) spectroscopy, thermo-gravimetric analysis/differential thermal gravimetric analysis(TGA/DTG), field emission scanning electron microscopy(FESEM), powder X-ray diffraction(XRD), and photoluminescence(PL)studies. TGA/DTG showed high thermal stability of synthesized complexes. Powder XRD depicts that the average particle size lies in the nano-range. On monitoring at the excitation wavelength of 370 nm, the complexes display characteristic luminescence peaks of Sm(III) at ~564,~600 and ~647 nm assigned to^(4)G_(5/2)→^(6)H_(5/2),^(4)G_(5/2)→^(6)H_(7/2), and ^(4)G_(5/2)→6H9/2 transitions, respectively, with the most intense transition at ~600(orange emission) and~647 nm(bright red emission) in liquid and powder state, respectively. The investigations demonstrate that the synthesized novel complexes might be practically useful in electroluminescent devices, bio-assays, and liquid lasers due to their attractive photoluminescent properties.

关键词： Samarium complexes Luminescence Thermal analysis Quantum yield

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Synthesis,characterization and photoluminescent properties of Eu(Ⅲ)complexes with 5-hydroxy-2-hydroxymethyl-4H-4-pyranone and N,N’-donor heterocyclic coligands

引用

Rare Metals 2021年第5期40卷 1118-1125页

作者： Shammy Laj Dhania Archana chauhan ritu Langyan Department of Chemistry Kurukshetra UniversityKurukshetra 136119India

In present work,five novel europium complexes[Eu(L)3·Phen(2),Eu(L)3·Bipy(3),Eu(L)3·Neo(4),Eu(L)3·Biq(5)and Eu(L)3·Batho(6)]were synthesized,derived from[Eu(L)3·2 H_(2)O](1)complex by using ligand(HL)5-hydroxy-2-(hydroxymethyl)-4 H-pyran-4-one and coligands 1,10-phenanthroline,bipyridine,neocuproine,2,2’-biquinoline and *** order to seek excellent photoluminescent properties,coligands were introduced in the complexes to form a rigid conjugated system,thus enhancing luminescence properties of *** synthesized complexes reveal four narrow characteristic emission lines of Eu(III)consistent with ^(5)D0→^(7)FJ transitions,where J=0,1,2 and 3 at about 580,595,614 and 650 nm,*** ^(5)D0→^(7)F_(2) transition is responsible for strong red *** coordinate diagram also indicates that x,y coordinates lie in deep red *** data are in favour of high thermal stability of synthesized *** to their high thermal stability and strong red luminescence,these complexes might be used in fabrication of optoelectronic devices.

关键词： Photoluminescence Europium complexes Color coordinates Optoelectronic devices Thermal stability

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Patch testing and cross sensitivity study of adverse cutaneous drug reactions due to anticonvulsants: A preliminary report

引用

World Journal of Methodology 2017年第1期7卷 25-32页

作者： TN Shiny Vikram K Mahajan Karaninder S Mehta Pushpinder S chauhan ritu Rawat Rajni Sharma Department of Der-matology Venereology and LeprosyDr.R.P.Govt. Medical College

AIM To evaluate the utility of patch test and cross-sensitivity patterns in patients with adverse cutaneous drug reactions(ACDR) from common anticonvulsants. METHODS Twenty-four(M:F = 13:11) patients aged 18-75 years with ACDR from anticonvulsants were patch tested 3-27 mo after complete recovery using carbamazepine, phenytoin, phenobarbitone, lamotrigine, and sodium valproate in 10%, 20% and 30% conc. in pet. after informed consent. Positive reactions persisting on D3 and D4 were considered significant. RESULTS Clinical patterns were exanthematous drug rash with or without systemic involvement(DRESS) in 18(75%), Stevens-Johnsons syndrome/toxic epidermal necrolysis(SJS/TEN) overlap and TEN in 2(8.3%) patients each, SJS and lichenoid drug eruption in 1(4.2%) patient each, respectively. The implicated drugs were phenytoin in 14(58.3%), carbamazepine in 9(37.5%), phenobarbitone in 2(8.3%), and lamotrigine in 1(4.7%) patients,respectively. Twelve(50%) patients elicited positive reactions to implicated drugs; carbamazepine in 6(50%), phenytoin alone in 4(33.3%), phenobarbitone alone in 1(8.3%), and both phenytoin and phenobarbitone in 1(8.33%) patients, respectively. Cross-reactions occurred in 11(92%) patients. Six patients with carbamazepine positive patch test reaction showed cross sensitivity with phenobarbitone, sodium valproate and/or lamotrigine. Three(75%) patients among positive phenytoin patch test reactions had cross reactions with phenobarbitone, lamotrigine, and/or valproate. CONCLUSION Carbamazepine remains the commonest anticonvulsant causing ACDRs and cross-reactions with other anticonvulsants are possible. Drug patch testing appears useful in DRESS for drug imputability and cross-reactions established clinically.

关键词： Anticonvulsant hypersensitivity syndrome Carbamazepine Sodium valproate Drug rash with eosinophilia with or without systemic involvement Drug patch test Lamotrigine Phenobarbitone Phenytoin Stevens-Johnsons syndrome Toxic epidermal necrolysis

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：