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Einstein Energy-Momentum Complex for a phantom Black Hole Metric

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Chinese physics Letters 2015年第2期32卷 19-22页

作者： p. K. Sahoo K. L. Mahanta D. Goit A. K. Sinha S. S. Xulu U. R. Das A. prasad R. prasad Department of Mathematics Birla Institute of Technology and Science-Pilani Hyderabad Campus Hyderabad 500078 India Department of Mathematics C. V. Raman College of Engineering Bhubaneswar 752054 India Department of physics B.S. College Patna 800012 India Department of physics College of Commerce Patna 800020 India Department of Computer Science University of Zululand Kwa-Dlangezwa 3886 South Africa Department of physics D.N. College Patna 804452 India Department of physics L.S. College Muzaffarpur 842001 India

We calculate the energy distribution associated with a static spherically symmetric non-singular phantom black hole metric in Einstein＇s prescription in general relativity. As required for the Einstein energy-momentum complex, we perform the calculations in quasi-Cartesian coordinates. We also calculate the momentum components and obtain a zero value, as expected from the geometry of the metric.

关键词： Einstein Energy-Momentum Complex for a phantom Black Hole Metric FRW

parallel Manipulators Applications—A Survey

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Modern Mechanical Engineering 2012年第3期2卷 57-64页

作者： Y. D. patel p. M. George Department of Mechanical Engineering A. D. Patel Institute of Technology New Vallabh Vidyanagar India Department of Mechanical Engineering Birla Vishvakarma Mahavidyalaya Engineering College Vallabh Vidyanagar India

This paper presents the comparison between serial and parallel manipulators. Day by day, the applications of the parallel manipulator in various field is become apparent and with a rapid rate utilized in precise manufacturing, medical science and in space exploration equipments. A parallel manipulator can be defined as a closed loop kinematic chain mechanism whose end effector is linked to the base by several independent kinematic chains. The classification of various parallel manipulators is presented herewith. The prime focus of the paper is to realize the parallel manipulators applications for industry, space, medical science or commercial usage by orienting manipulator in the space at the high speed with a desired accuracy.

关键词： parallel Manipulator Hexapod Reconfigurable parallel Robot Delta Robots

Categorization of Software Release Risks and Its Abatement Strategy

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Journal of Software Engineering and Applications 2014年第12期7卷 1039-1044页

作者： Arti Rana S. p. Singh Rachna Soni Ashish Jolly Amity Institute of Information Technology Amity University Noida (UP) India birla Institute of Technology Extension Centre Noida India Department of Computer Science DAV College for Girls Yamuna Nagar India Department of Computer Science Govt. College Bherian (Pehowa) Haryana India

Growing competition in the software industry with the persistently changing needs and the usual?problems associated with software release, which have made acceptance of a new software in?market, are extremely important for the success. Volatility in the software developmental processes is generally difficult to handle. The change request at any arbitrary point of time leads to the inevitable change and rework request. The software release process which broadly includes all the process that starts after the completion of development till the final deployment. This complete phase is exposed to various risks which may hamper the final result. This paper presents threat associated with software release activities and their possible mitigation and exploring the role played by the change management in controlling or reducing those *** the effective survival in ever changing software industry needs, Software Release Management takes a holistic view of the change and configuration relationship and work on the improvement strategies for the effective release with zero defect potential.

关键词： Software Release Management Change Management Release Deployment

Development of Moisture and Ash Based Correlation for the Estimation of Mineral Matter in High Ash Indian Coal

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International Journal of Clean Coal and Energy 2015年第2期4卷 33-42页

作者： M. K. Saini p. K. Srivastava N. Choudhury Resource Quality Assessment CSIR-Central Institute of Mining & Fuel Research Regional Center Ranchi India Applied Chemistry Birla Institute of Technology Regional Center Deoghar India Resource Quality Assessment CSIR-Central Institute of Mining & Fuel Research Digwadih Campus Dhanbad India

The experimental determination of mineral matter in coal is a tedious as well as time consuming process, and requires highly skilled analyst to carry out the chemical analysis of coal and ash. On the other hand, determination of moisture and ash is relatively easy using moisture oven and muffle furnace and can be determined anywhere with little care. Most of the methods reported till date for the evaluation of mineral matter in coal involves indirect determination of mineral matter using high temperature ash as one parameter. All these methods offer conversion of ash yield into mineral matter with the help of correlations based on certain assumptions. Although, the method for direct determination of mineral matter by chemical analysis is also reported, but is of little use as it requires extensive chemical analysis. In this study mineral matter is determined directly by oxygen plasma asher in coal samples collected from different regions of India. The results obtained were compared with those obtained by existing correlations. It has been observed that all the existing correlations including parr’s, are found to be unrealistic for high ash Indian coal. An attempt has been made to develop a new correlation for the estimation of mineral matter based on two simple parameter i.e. moisture content and ash yield. present model was developed after analyzing 75 coal samples. The developed correlation appears to be more simple and better and is represented as Mineral Matter(MM)= 0.74(Moisture) + 1.17(Ash)

关键词： Ash Yield Low Temperature Ashing Mineral Matter Moisture Content

EXpERT SYSTEM FOR HF COMMUNICATION LINK

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EXPERT SYSTEM FOR HF COMMUNICATION LINK

Rectangularisation Issues in Health Economics &Insurance: Measures and Mitigations

计算机，通信，控制与电力工程国际会议

作者： Vipul Rawat R. C. Ramola p. S. Bhatnagar birla Institute of Technology & Science PilaniINDIA. Central Electronics Engineering Research Institute pilani-333031 INDIA.

The fading phenomenon is one of the major factor upon which the reliable communication through HF link *** to this phenomenon errors occur in received message in terms of character error rate (CER).This paper describe... 详细信息

关键词： CER EXpERT SYSTEM FOR HF COMMUNICATION LINK

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Journal of Applied Mathematics and physics 2016年第7期4卷 1327-1335页

作者： S. Jayaprakash p. K. Dinakar Michael Ha Zhengjun Jiang Uthit Siriwan Manning Li Chukwuemeka Okeagu Nanobi Data and Analytics private Ltd. Bangalore India The Institute of Actuaries of India Mumbai India Xi’an Jiaotong-Liverpool University Suzhou China Bryant College Beijing Institute of Technology Zhuhai China Faculty of Business Charisma University Turks and Caicos UK Bank of Communications Suzhou Branch Suzhou China

Aim: Actuaries are financial engineers who construct arrays of risk models combining mathematical techniques in order to carry out required actuarial calculations, such as reserve valuation and pricing. The main purpose is to identify some reliable models which price risk factors embedded in insurance products. Health insurance products which are very different in nature from life insurance products must be examined and priced carefully. This paper discusses predominantly two risks. Excess claims ratio and Rectangularisation risks. Background: The first author, Dr. S. Jayaprakash was responsible for Enterprise Risk Management with MetLife India. He was earlier associated with Life Insurance Corporation of India & Oracle Financial Services. Dr. p. K. Dinakar, the second author, qualified as Fellow of the Institute of Actuaries of India, was Chief Actuary of MetLife India Insurance. He was earlier associated with Life Insurance Corporation of India & birla Sunlife. The third author, Dr. Michael Ha, FSA, MAAA, CFA, CpA (Australia), FRM, pRM, LLM, was Vice president of Strategic Business Initiatives Units at ING Life Insurance in its Taiwan operation. He started his actuarial career at MetLife, Canada. Earlier, the first and third authors worked on a research paper titled “Modeling policyholder Behavior through Insurance Resonant Marts for pricing Options and Guarantees” [1] which was presented at the 5th World Congress on Engineering and Technology. The seven authors decided to collaborate on the current research paper for health insurance design and financing purposes.

关键词： Claims Ratio Valuation De-Risk Rectangularisation Morbidity

An adaptive supervised wide-area backup protection scheme for transmission lines protection

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protection and Control of Modern power Systems 2017年第1期2卷 229-244页

作者： B.Mallikarjuna p.V.Vardhan Varma S.D.Samir M.Jaya Bharata Reddy D.K.Mohanta Department of Electrical and Electronics Engineering National Institute of TechnologyTiruchirappalliTamilnaduIndia. Department of Electrical and Electronics Engineering Birla Institute of TechnologyMesraRanchiIndia.

Maloperation of conventional relays is becoming prevalent due to ever increase in complexity of conventional power *** are dominant during power system contingencies like power swing,load encroachment,voltage instability,unbalanced loading,*** these situations,adaptive supervised wide-area backup protection(ASWABp)plays a major role in enhancing the power system reliability.A balance between security and dependability of protection is essential to maintain the *** paper proposes multi-phasor measurement units(MpMU)based ASWABp scheme that can function effectively during faults besides power system *** is an extended version of phasor Measurement Unit(pMU).It is an intelligent electronic device which estimates the synchronized predominant harmonic phasors(100Hz and 150Hz)along with the fundamental phasors(50Hz)of three phase voltages and currents with high *** proposed ASWABp scheme can detect the fault,identify the parent bus,determine the faulty branch and classify the faults using MpMU measurements at System protection Center(SpC).Based on these MpMU measurements(received at phasor data concentrator(pDC)at SpC)the appropriate relays will be supervised to enhance the overall reliability of the power *** case studies are conducted on WSCC-9 bus and IEEE-14 bus systems to illustrate the security and dependability attributes of proposed ASWABp scheme in MATLAB/Simulink ***,comparative studies are performed with the existing conventional distance protection(Mho relays)for corroborating the superiority of the proposed scheme regarding security and *** studies have shown that the proposed scheme can be used as adaptive supervised wide-area backup protection of conventional distance protection.

关键词： Adaptive supervised wide-area backup protection(ASWABp) Multi-phasor measurement unit(MpMU) Security Dependability

Association of latitude and altitude with adverse outcomes in patients with COVID-19: The VIRUS registry

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World Journal of Critical Care Medicine 2022年第2期11卷 102-111页

作者： Aysun Tekin Shahraz Qamar Romil Singh vikas Bansal Mayank Sharma Allison M LeMahieu Andrew C Hanson phillip J Schulte Marija Bogojevic Neha Deo Simon Zec Diana J Valencia Morales Katherine A Belden Smith F Heavner Margit Kaufman Sreekanth Cheruku Valerie C Danesh Valerie M Banner-Goodspeed Catherine A St Hill Amy B Christie Syed A Khan Lynn Retford Karen Boman Vishakha KKumar John C O'Horo Juan pablo Domecq Allan J Walkey Ognjen Gajic Rahul Kashyap Salim Surani TheSociety of Critical Care Medicine(SCCM)Discovery Viral Infection and Respiratory Illness Universal Study(VIRUS):COVID-Registry Investigator Group Department of Anesthesiology Mayo ClinicRochesterMN 55905United States post-baccalaureate Research Education program Mayo Clinic College of Medicine and ScienceRochesterMN 55905United States Division of pulmonary and Critical Care Medicine Department of Internal MedicineMayo ClinicRochesterMN 55905United States Division of Clinical Trials and Biostatistics Department of Quantitative Health SciencesMayo ClinicRochesterMN 55905United States Alix School of Medicine Mayo ClinicRochesterMN 55905United States Division of Infectious Diseases Thomas Jefferson University HospitalPhiladelphiaPA 19107United States prisma Health GreenvilleSC 29605United States Englewood Health EnglewoodNJ 07631United States Divisions of Cardiothoracic Anesthesiology and Critical Care Medicine Department of Anesthesiology and Pain ManagementUT Southwestern Medical CenterDallasTX 75390United States Center for Applied Health Research Baylor Scott and White HealthDallasTX 75246United States Department of Anesthesiology Critical Care and Pain MedicineBeth Israel Deaconess Medical CenterBostonMA 02215United States Allina Health MinneapolisMN 55407United States Department of Critical Care Atrium Health NavicentMaconGA 31201United States Division of Critical Care Medicine Mayo Clinic Health SystemMankatoMN 56001United States Society of Critical Care Medicine Mount ProspectIL 60056United States Division of Infectious Diseases Mayo ClinicRochesterMN 55905United States Division of Nephrology and Hypertension Department of Internal MedicineMayo ClinicRochesterMN 55905United States pulmonary Center Division of PulmonaryAllergyCritical Care and Sleep MedicineDepartment of MedicineEvans Center of Implementation and Improvement SciencesBoston University School of MedicineBostonMA 02118United States Department of pulmonary and Critical Care Medicine Texas A&M UniversityBryanTX 77807United States 不详

BACKGROUND The coronavirus disease 2019(COVID-19)course may be affected by environmental *** studies previously suggested a link between climatological factors and COVID-19 fatality ***,individual-level impact of these factors has not been thoroughly evaluated *** To study the association of climatological factors related to patient location with unfavorable outcomes in *** In this observational analysis of the Society of Critical Care Medicine Discovery Viral Infection and Respiratory Illness Universal Study:COVID-19 Registry cohort,the latitudes and altitudes of hospitals were examined as a covariate for mortality within 28 d of admission and the length of hospital *** for baseline parameters and admission date,multivariable regression modeling was *** estimating equations were used to fit the *** Twenty-two thousand one hundred eight patients from over 20 countries were *** median age was 62(interquartile range:49-74)years,and 54%of the included patients were *** median age increased with increasing latitude as well as the frequency of ***,the percentage of comorbidities was lower in elevated *** within 28 d of hospital admission was found to be 25%.The median hospital-free days among all included patients was 20 *** the significant linear relationship between mortality and hospital-free days(adjusted odds ratio(aOR)=1.39(1.04,1.86),p=0.025 for mortality within 28 d of admission;aOR=-1.47(-2.60,-0.33),p=0.011 for hospital-free days),suggesting that adverse patient outcomes were more common in locations further away from the Equator;the results were no longer significant when adjusted for baseline differences(aOR=1.32(1.00,1.74),p=0.051 for 28-day mortality;aOR=-1.07(-2.13,-0.01),p=0.050 for hospital-free days).When we looked at the altitude’s effect,we discovered that it demonstrated a non-linear association with mortality wi

关键词： 28 d mortality Altitude COVID-19 Hospital-free days Latitude Outcomes