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Evaluating the Impact of Prediction Techniques: Software reliability Perspective

Computers, Materials & Continua 2021年第5期67卷 1471-1488页

作者： kavita Sahu Fahad A.Alzahrani r.k.srivastava rajeev kumar Department of Computer Science Dr.Shakuntala Misra National Rehabilitation UniversityLucknow226017India Department of Computer Engineering College of Computer and Information SystemsUmm Al-Qura UniversityMakkah21955Saudi Arabia Department of Computer Application Shri Ramswaroop Memorial UniversityBarabanki225003India Department of Information Technology Babasaheb Bhimrao Ambedkar UniversityLucknow226025India

Maintaining software reliability is the key idea for conducting quality *** can be done by having less complex *** developers and other experts have made signicant efforts in this context,the level of reliability is not the same as it should ***,further research into the most detailed mechanisms for evaluating and increasing software reliability is essential.A signicant aspect of growing the degree of reliable applications is the quantitative assessment of *** are multiple statistical as well as soft computing methods available in literature for predicting reliability of ***,none of these mechanisms are useful for all kinds of failure datasets and *** nding the most optimal model for reliability prediction is an important *** paper suggests a novel method to substantially pick the best model of reliability *** method is the combination of analytic hierarchy method(AHP),hesitant fuzzy(HF)sets and technique for order of preference by similarity to ideal solution(TOPSIS).In addition,using the different iterations of the process,procedural sensitivity was also performed to validate the *** ndings of the software reliability prediction models prioritization will help the developers to estimate reliability prediction based on the software type.

关键词： Software reliability reliability prediction prediction techniques hesitant-fuzzy-AHP hesitant-fuzzy-TOPSIS

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Safety Evaluation of a Potent Tetanus Vaccine (250 Lf) in Guinea Pigs (Cavia procellus)

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Biomedical and Environmental Sciences 1990年第3期3卷 364-371页

作者： N.SETHI r.k.srivastava r.k.SINGH S.srivastava Division of Toxicology Central Drug Research Institute Lucknow-226001 India

A subacute toxicity study of a potent tetanus toxoid (250 Lf) was carried out in guinea *** toxoid was injected subcutaneously at the nape of the neck at dose levels of 1.0, *** 2.0 ml in Groups Ⅱ. Ⅲ. and Ⅳ, *** the controls (Group Ⅰ) 2.0 ml of aluminum phosphate suspension was given in each *** evaluations of body weight, food/water intake, general observable behavior, *** blood chemistry in toxoid-injected guinea pigs were similar to those in control guinea ***, the toxoid did not cause any side effects up to four times the dose proposed for humans.1990 Academic Press, Inc.

关键词： Cavia procellus Safety Evaluation of a Potent Tetanus Vaccine Lf in Guinea Pigs

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Teratogenicity Studies of a New Potent Tetanus Vaccine in rabbit (Oryctolagus cuniculus)

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Biomedical and Environmental Sciences 1991年第3期4卷 327-331页

作者： N.SETHI r.k.srivastava r.k.SINGH Division of Toxicology Central Drug Research Institute Lucknow 226001 IndiaDivision of Toxicology Central Drug Research Institute Lucknow 226001 IndiaDivision of Toxicology Central Drug Research Institute Lucknow 226001 India

Glaxo Laboratories, Bombay, have prepared a potent tetanus vaccine of 250 Lf as a substitute of the previous 5 Lf tetanus vaccine. The safety evaluation of the vaccine has been reported, but the teratogenic potential was not studied. In the experiment reported herein we have studied the teratogenic action of the vaccine in the progeny of rabbits. No congenital anomalies were observed.

关键词： In Oryctolagus cuniculus Teratogenicity Studies of a New Potent Tetanus Vaccine in rabbit

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role of Soluble Factors in Immune and Normal Sera in the Control of Giardiasis Due to Giardia Iamblia

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Biomedical and Environmental Sciences 1992年第2期5卷 87-91页

作者： r.k.srivastava N.SETHI N.GUPTA A.k.AGArWAL Division of Toxicology Division of ToxicologyMicrobiology Central Drug Research Institute LucknowMicrobiology Central Drug Research Institute Lucknow Offprint request to Dr. (Mrs). N. Sethi Scientist-in-Charge226001. India226001. India

Hyperimmune sera (HIS), raised against crude giardia antigen, on in vitro interaction, caused more agglutination of Giardia lamblia trophozoites. Heat inactivated HIS possessed a comparable agglutinating activity as the non-inactivated controls. Non-inactivated normal (unimmunized) serum caused immobilization of Giardia trophozoite, which was checked on heat inactivation. Antibodies in immune sera are mainly responsible for agglutination, whereas the heat labile non-immune components control the mobility of the intestinal parasite.

关键词： role of Soluble Factors in Immune and Normal Sera in the Control of Giardiasis Due to Giardia Iamblia

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夏季降温对商品肉鸡生长及饲料利用的影响

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国外畜牧学(猪与禽) 1982年第2期 27-28页

作者： r.k.srivastava D.P.Dhingra 顾朝旭

Longhouse 等(1960)证明,气温可影响鸡的生长率、饲料利用、产蛋、蛋壳厚度和性成熟。对所有各鸡种来说,理想的温度约为13℃。大多数鸡种在温度降到大约7℃以下时即开始显现低温应激的征兆,而温度持续低于7℃,则会降低饲料效率及产蛋量... 详细信息

Longhouse 等(1960)证明,气温可影响鸡的生长率、饲料利用、产蛋、蛋壳厚度和性成熟。对所有各鸡种来说,理想的温度约为13℃。大多数鸡种在温度降到大约7℃以下时即开始显现低温应激的征兆,而温度持续低于7℃,则会降低饲料效率及产蛋量。同样,持续高于29℃的气温也会导致饲料效率、产蛋量、蛋的大

关键词：饲料利用水雾鸡种风扇周龄肉用仔鸡试验鸡蒸发降温

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注气法提高稠油采收率合理技术政策的实验室评价

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吐哈油气 1998年第2期3卷 76-91页

作者： r.k.srivastava S.S.HUANG 杨静孙洪滨

萨斯喀彻温省的大多数稠油油藏层薄且位于油田边缘,不适宜用热采方法。对这些稠油油藏而言,非混相的CO_2或天然气驱替工艺可能是十分有利的提高原油采收率技术。如果该工艺的确适用,将会采出90%的原始石油地质储量。该地区无廉价的CO_2... 详细信息

萨斯喀彻温省的大多数稠油油藏层薄且位于油田边缘,不适宜用热采方法。对这些稠油油藏而言,非混相的CO_2或天然气驱替工艺可能是十分有利的提高原油采收率技术。如果该工艺的确适用,将会采出90%的原始石油地质储量。该地区无廉价的CO_2资源,可用含有CO_2的其它气体代替。本文采用萨斯喀彻温省研究委员会实验室研究结果来评价含85mol%N_2和15mol%CO_2烟道气的适用性,并评价稠油开发的多种开发技术政策。试验所用稠油(14°API比重)是从位于LOYMINSTEr地区的SENLAC油藏收集到的。本项评价研究了驱替类型(二次或三次),注入方式(段塞试验及水-气交替驱替),原油类型(SENLAC含气原油与脱气原油),注入气体(烟道气及CO_2)等因素对原油采收率的影响。采用SENLAC油烟道气所做的线性岩心驱替试验(28℃,2.5-2.7MPa实施状态下)得出的主要结论是: 1.在三种不同注入方式(二次段塞、三次段塞及三次水气交替)之中,含气原油采用二次气段塞注入是稠油开发最适宜的注入方式。因为采用这种注气方法具有很高的驱替效率。 2.用三次水气交替方法比二次段塞方法可以采出更多的原油,因为前者的优势在于能够提高对流度的控制。 3.实验中用含气原油比用脱气原油总采收率高。这是由于含气原油的流度相对更为适宜,含气原油实验中操作压力略高一点。 4.烟道气可作为有效驱替介质,因为其原油采收率比采用CO_2仅低2-4个百分点。人们认为用烟道气方法获得的较好原油采收率是二个竞争机制的综合结果——一为由N_2提供的游离气驱机理,另一个由CO_2提供的溶解机理,这不同于CO_2驱占主导的溶解机理(由CO_2提供)。

关键词：总采收率石油地质储量烟道气含气原油原油采收率脱气原油技术政策实验室评价原油类型岩心驱替试验

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Microstructure transformations and improving wear resistance of austenitic stainless steel additively fabricated by arc-based DED process

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Defence Technology（防务技术） 2024年第8期38卷 194-204页

作者： Ashish Yadav Manu srivastava Prashant k.Jain Sandeep rathee Hybrid Additive Manufacturing Laboratory Mechanical Engineering DepartmentPDPM Indian Institute of Information TechnologyDesign&ManufacturingJabalpur482005Madhya PradeshIndia FFF Laboratory Mechanical Engineering DepartmentPDPM Indian Institute of Information TechnologyDesign&ManufacturingJabalpur482005Madhya PradeshIndia Department of Mechanical Engineering National Institute of TechnologySrinagarIndia

In this study, austenitic stainless steel(ASS) was additively fabricated by an arc-based direct energy deposition(DED) technique. Macrostructure, microstructure, mechanical characteristics at different spatial orientations(0°, 90°, and 45°), and wear characteristics were evaluated at the deposited structure top, middle, and bottom regions. results show that austenite(γ) and delta-ferrite(δ) phases make up most of the microstructure of additively fabricated SS316LSi steel. Within γ matrix, δ phase is dispersed both(within and along) grain boundaries, exhibiting a fine vermicular morphology. The bottom, middle,and top regions of WAAM deposited ASS exhibit similar values to those of wrought SS316L in the tensile and impact test findings. Notably, a drop in hardness values is observed as build height increases. During SEM examinations of fractured surfaces from tensile specimen, closed dimples were observed, indicating good ductility of as-built structure. Wear test findings show signs of mild oxidation and usual adhesive wear. By depositing a mechanically mixed composite layer, an increase in the oxidation percentage was discovered to facilitate healing of worn surfaces. The findings of this study will help in design, production and renovation of products/components that are prone to wear. WAAM-deposited ASS has remarkable strength and ability to withstand impacts;it can be used in the production of armour plates for defence applications, mainly military vehicles and aircraft.

关键词： Metal additive deposition Defence applications Arc-based DED Characterization Wear behaviour Fractography

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rSPO2 as Wnt signaling enabler: Important roles in cancer development and therapeutic opportunities

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Genes & Diseases 2024年第2期11卷 788-806页

作者： Ankit srivastava Deeksha rikhari Sameer srivastava Department of Biotechnology Motilal Nehru National Institute of TechnologyAllahabadUttar Pradesh 211004India

r-spondins are secretory proteins localized in the endoplasmic reticulum and Golgi bodies and are processed through the secretory *** the r-spondin family,rSPO2 has emanated as a novel regulator of Wnt signaling,which has now been acknowledged in numerous in vitro and in vivo *** is an abnormal growth of cells that proliferates and spreads uncontrollably due to the accumulation of genetic and epigenetic factors that constitutively activate Wnt signaling in various types of *** cancer (CrC) begins when cells in the colon and rectum follow an indefinite pattern of division due to aberrant Wnt activation as one of the key ***-long progress in research on r-spondins has demonstrated their oncogenic function in distinct cancer types,particularly *** a critical regulator of the Wnt pathway,it modulates several phenotypes of cells,such as cell proliferation,invasion,migration,and cancer stem cell ***,rSPO mutations,gene rearrangements,fusions,copy number alterations,and altered gene expression have also been identified in a variety of cancers,including *** this review,we addressed the recent updates regarding the recurrently altered r-spondins with special emphasis on the rSPO2 gene and its involvement in potentiating Wnt signaling in *** addition to the compelling physiological and biological roles in cellular fate and regulation,we propose that rSPO2 would be valuable as a potential biomarker for prognostic,diagnostic,and therapeutic use in CrC.

关键词： CrC Gene fusion r-Spondins rSPO2 Therapeutics Wnt signaling

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Impact of infectious density-induced additional screening and treatment saturation on COVID-19:Modeling and cost-effective optimal control

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Infectious Disease Modelling 2024年第2期9卷 569-600页

作者： Sonu Lamba Tanuja Das Prashant k.srivastava Department of Mathematics Indian Institute of Technology Patna Bihta–801106PatnaBiharIndia Department of Mathematics and Statistics University of New Brunswick FrederictonNBE3B 5A3Canada

This study introduces a novel SI2Hr model,where“I2”denotes two infectious classes representing asymptomatic and symptomatic infections,aiming to investigate and analyze the cost-effective optimal control measures for managing *** model incorporates a novel concept of infectious density-induced additional screening(IDIAS)and accounts for treatment ***,the model considers the possibility of reinfection and the loss of immunity in individuals who have previously *** validate and calibrate the proposed model,real data from November–December 2022 in Hong kong are *** estimated parameters obtained from this calibration process are valuable for prediction purposes and facilitate further numerical *** analysis of the model reveals that delays in screening,treatment,and quarantine contribute to an increase in the basic reproduction number r0,indicating a tendency towards *** particular,from the elasticity of r0,we deduce that normalized sensitivity indices of baseline screening rate(θ),quarantine rates(γ,αs),and treatment rate(α)are negative,which shows that delaying any of these may cause huge surge in r0,ultimately increases the disease ***,by the contour plots,we note the two-parameter behavior of the infectives(both symptomatic and asymptomatic).Expanding upon the model analysis,an optimal control problem(OCP)is formulated,incorporating three control measures:precautionary interventions,boosted IDIAS,and boosted *** Pontryagin's maximum principle and the forward-backward sweep method are employed to solve the *** numerical simulations highlight that enhanced screening and treatment,coupled with preventive interventions,can effectively contribute to sustainable disease ***,the cost-effectiveness analysis(CEA)conducted in this study suggests that boosting IDIAS alone is the most economically efficient and cost-effective approach compared to other *** CEA resul

关键词： COVID-19 IDIAS Estimation Prediction Optimal control Cost-effectiveness analysis

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Optimizing sampling frequency of surface and downhole measurements for efficient stick-slip vibration detection

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Petroleum 2024年第1期10卷 30-38页

作者： Saket srivastava Aditya Sharma Catalin Teodoriu Mewbourne School of Petroleum and Geological Engineering The University of OklahomaNormanOK73019USA

Drilling vibrations significantly impact drilling operations with high costs due to early downhole equipment failure and loss of productive ***-slip vibrations,a severe form of torsional vibrations,is known to be present up to 50%of total drilling time,making it a topic of immense concern and *** ongoing discussion in the industry is regarding the reliability of surface measurements for early detection of severe downhole bit ***,most surface measurements are sampled at lower frequency rates closer to 1 ***,the implementation of advanced data acquisition modules in downhole subs has greatly improved our understanding of drilling vibrations through high resolution data,sampled up to 10 ***,with a wide range of sampling frequency to choose from different available tools,a critical question remains *** is an optimal and adequate sampling frequency for early detection of downhole vibrations using both surface and downhole measurements?The paper addresses the question with a focus on stick-slip vibrations through an experimental *** slip tests are repeated for different sampling frequencies of surface and downhole measurements and the stick slip index for each case is *** stick-slip index varies for different sampling frequency even though the vibration tests remain completely *** was inferred that sampling frequency of measurements greatly impact the detection of downhole *** though stick-slip vibrations are characteristically low frequency vibrations(2Hz),a minimum of 10Hz sampling frequency is recommended for detection of stick-slip ***,all characteristics of stick-slip vibrations including bit sticking,bit rPM peaks and negative bit rPMs are clearly observed at a minimum of 100Hz sampling rate.

关键词： Drilling closer downhole

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