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An artificial neural network based deep collocation method for the solution of transient linear and nonlinear partial differential equations

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Frontiers of Structural and Civil Engineering 2024年第8期18卷 1296-1310页

作者： abhishek mishra Cosmin ANITESCU Pattabhi Ramaiah BUDARAPU Sundararajan NATARAJAN Pandu Rang VUNDAVILLI Timon RABCZUK School of Mechanical Sciences Indian Institute of TechnologyBhubaneswar 752050India Institute of Structural Mechanics Bauhaus University of WeimarWeimar 99423Germany Department of Mechanical Engineering Indian Institute of Technology MadrasChennai 600036India

A combined deep machine learning(DML)and collocation based approach to solve the partial differential equations using artificial neural networks is *** developed method is applied to solve problems governed by the Sine–Gordon equation(SGE),the scalar wave equation and *** methods are studied:one is a space-time formulation and the other is a semi-discrete method based on an implicit Runge–Kutta(RK)time *** methodology is implemented using the Tensorflow framework and it is tested on several numerical *** on the results,the relative normalized error was observed to be less than 5%in all cases.

关键词： collocation method artificial neural networks deep machine learning Sine-Gordon equation transient wave equation dynamic scalar and elasto-dynamic equation Runge-Kutta method

Nanomaterial Based Biosensors for Detection of Viruses Including SARS-CoV-2:A Review

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Journal of Analysis and Testing 2021年第4期5卷 327-340页

作者： Ayushi Bisht abhishek mishra Harender Bisht R.M.Tripathi Amity Institute of Biotechnology Amity UniversityNoida 201303India Amity Institute of Nanotechnology Amity UniversityNoida 201303India Reliance Industries Limited MotikhavdiJamnagar 361140India

The COVID-19 outbreak led to an uncontrollable situation and was later declared a global ***-PCR is one of the reliable methods for the detection of COVID-19,but it requires transporting samples to sophisticated laboratories and takes a significant amount of time to amplify the viral ***,there is an urgent need for a large-scale,rapid,specific,and portable detection *** nanomaterials-based detection technology has been developed and it showed advancement over the conventional methods in selectivity and *** review aims at summarising some of the most promising nanomaterial-based sensing technologies for detecting *** possess unique physical,chemical,electrical and optical properties,which can be exploited for the application in ***,nanomaterials work on the same scale as biological processes and can be easily functionalized with substrates of *** devices do not require extraordinary sophistication and are suitable for use by common individuals without high-tech *** and colorimetric methods similar to glucometer and pregnancy test kits are discussed and reviewed as potential diagnostic devices for *** devices working on the principle of immune response and microarrays are also discussed as possible *** such as metal nanoparticles,graphene,quantum dots,and CNTs enhance the limit of detection and accuracy of the biosensors to give spontaneous *** challenges of industrial-scale production of these devices are also *** mass production is successfully developed,these sensors can ramp up the testing to provide the accurate number of people aff ected by the virus,which is extremely critical in today’s scenario.

关键词： SARS-CoV-2 Electrochemical sensors Nanomaterials Colorimetric detection Microarray-based sensors Impedimetric biosensors

Consumption Value of Digital Devices: An Investigation through Facebook Advertisement

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Social Networking 2015年第3期4卷 51-61页

作者： abhishek mishra Indian Institute of Management Prabandh Shikhar Indore India

Data collection represents the most effort-intensive stage of any marketing research exercise, especially in cases sampling frame is unavailable. Sub-optimal bypasses in form of student surveys or surveys employing convenience sampling have become common. In modern era, where laptops and smartphones enable easy accessibility of respondents online, this study utilizes Facebook advertisement as a source of data collection to measure the construct of user experience for interactive products. Modern digital devices, like smartphones, are a source of a variety of experiences for the user. Design teams at various smartphone manufacturers are struggling every day to create products which provide complete consumer experiences. This work not only proposes a framework for describing the same with usability, social value and pleasure in use, but also tests the scales for each by empirical validation. Data collection process through Facebook, as a sample frame, is something yet to be seen in marketing literature. This work goes the distance in not only demonstrating the efficacy of using Facebook advertisement as a viable data collection tool but also developing a framework to measure consumption value. Outcomes of the study, should promote further research using this sampling frame for future research, especially in the area of marketing.

关键词： Smartphone Digital Device Facebook Advertisement Consumption Value Usability Social Value Pleasure in Use

Virtual preoperative planning and 3D printing are valuable for the management of complex orthopaedic trauma

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Chinese Journal of Traumatology 2019年第6期22卷 350-355页

作者： abhishek mishra Tarun Verma abhishek Vaish Riya Vaish Raju Vaishya Lalit Maini Department of Orthopaedics and Joint Replacement Surgery Maulana Azad Medical CollegeLok Nayak HospitalNew Delhi 110001India Department of Orthopaedics and Joint Replacement Surgery Indraprastha Apollo HospitalSaritaViharNew Delhi 110076India

Purpose:The technology of 3D printing(3DP)exists for quite some time,but it is still not utilized to its full potential in the field of orthopaedics and traumatology,such as underestimating its worth in virtual preoperative planning(VPP)and designing various models,templates,and *** can be a significant tool in the reduction of surgical morbidity and better surgical outcome avoiding various associated ***:An observational study was done including 91 cases of complex trauma presented in our institution requiring operative *** preoperative planning and 3DP were used in the management of these *** managing these cases were given a set of questionnaire and responses were recorded and assessed as a quantitative ***:In all the 91 cases,where VPP and 3DP were used,the surgeons were satisfied with the outcome which they got intraoperatively and *** time was reduced,with a better *** dimensional models of complex fracture were helpful in understanding the anatomy and sketching out the plans for optimum reduction and *** average score of the questionnaire was 4.5,out of a maximum of 6,suggesting a positive role of 3DP in ***:3DP is useful in complex trauma management by accurate reduction and placement of implants,reduction of surgical time and with a better *** there is an initial learning curve to understand and execute the VPP and 3DP,these become easier with practice and experience.

关键词： Three-dimensional printing Bone fractures Fracture dislocation X-ray computed tomography

Penetrating soft palate injury by lollypop candy stick

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Journal of Acute Disease 2023年第5期12卷 213-214页

作者： Shalendra Singh Sushrut Avinash Kulkarni Nitesh Agrawal abhishek mishra Department of Anaesthesiology and Critical Care Command Hospital(NC)UdhampurIndia Department of ENT Command Hospital(NC)UdampurIndia Department of Radiology Command Hospital(NC)UdhampurIndia

Incidents of soft palate injury or laceration caused by unintended movement when holding a sharp object in the mouth in the pediatric population are usually rarely *** we report a case of soft palate laceration in a c... 详细信息

关键词： injury sharp palate

Practice patterns among ophthalmic surgeons in treating concomitant oculoplastic conditions in preoperative period:A questionnaire-based study

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World Journal of Clinical Cases 2025年第1期13卷 29-37页

作者： Bijnya Birajita Panda Chitaranjan mishra Bhagabat Nayak Avik Kumar Roy Logesh Balakrishnan Priyadarshini mishra Department of Ophthalmology All India Institute of Medical SciencesBhubaneswar 751019OdishaIndia Department of Vitreo-Retina Trilochan NetralayaSambalpur 768004India Department of Glaucoma Services LV Prasad Eye InstituteBhubaneswar 751013India Department of Statistics Apollo HospitalsChennai 823104India

BACKGROUND Addressing oculoplastic conditions in the preoperative period ensures both the safety and functional success of any ophthalmic *** oculoplastic conditions,like nasolacrimal duct obstruction,have been extensively studied,whereas others,like eyelid malposition and thyroid eye disease,have received minimal or no *** To investigate the current practice patterns among ophthalmologists while treating concomitant oculoplastic conditions before any subspecialty ophthalmic *** A cross-sectional survey was disseminated among ophthalmologists all over *** survey included questions related to pre-operative evaluation,anaesthetic and surgical techniques preferred,post-operative care,the use of adjunctive therapies,and patient follow-up *** A total of 180 ophthalmologists responded to the *** practitioners(89%)felt that the ROPLAS test was sufficient during pre-operative evaluation before any subspecialty surgery was *** most common surgical techniques employed were lacrimal drainage procedures(Dacryocystorhinostomy)(63.3%),eyelid malposition repair(36.9%),and ptosis repair(58.7%).Post-operatively,47.7%of respondents emphasized that at least a 4-week gap should be maintained after lacrimal drainage procedures and eyelid ***-seven percent of ophthalmologists felt that topical anaesthetic procedures should be preferred while performing ocular surgeries in thyroid eye disease *** Approximately 50%of ophthalmologists handle prevalent oculoplastic issues themselves,seeking the expertise of an oculoplastic surgeon under particular *** ophthalmologists still favor using ROPLAS as a preliminary screening method before proceeding with cataract *** conditions and thyroid eye disease are not as commonly addressed before subspecialty procedures compared to issues like nasolacrimal duct obstruction and periocular infections.

关键词： Oculoplasty Ophthalmic plastic surgery Nasolacrimal duct obstruction Practice patterns Survey

Multi-head neural networks for simulating particle breakage dynamics

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Theoretical & Applied Mechanics Letters 2024年第2期14卷 130-141页

作者： abhishek Gupta Barada Kanta mishra School of Mechanical Sciences Indian Institute of Technology(IIT)GoaPonda 403401India School of Chemical and Materials Science Indian Institute of Technology(IIT)GoaPonda 403401India

The breakage of brittle particulate materials into smaller particles under compressive or impact loads can be modelled as an instantiation of the population balance integro-differential *** this paper,the emerging computational science paradigm of physics-informed neural networks is studied for the first time for solving both linear and nonlinear variants of the governing *** conventional methods,the proposed neural network provides rapid simulations of arbitrarily high resolution in particle size,predicting values on arbitrarily fine grids without the need for model *** network is assigned a simple multi-head architecture tailored to uphold monotonicity of the modelled cumulative distribution function over particle *** method is theoretically analyzed and validated against analytical results before being applied to real-world data of a batch grinding *** agreement between laboratory data and numerical simulation encourages the use of physics-informed neural nets for optimal planning and control of industrial comminution processes.

关键词： Particle breakage dynamics Population balance equation Physics-informed neural networks

Robotic assisted Roux-en-Y hepaticojejunostomy in a post-cholecystectomy type E2 bile duct injury

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World Journal of Gastroenterology 2015年第6期21卷 1703-1706页

作者： Arun Prasad Sudipto De Purak mishra abhishek Tiwari Department of Minimal Access and Robotic Surgery Apollo Hospital

Roux-en-Y hepaticojejunostomy anastomosis is the treatment of choice for common hepatic duct injury type *** has been performed laparoscopically with the advancement of laparoscopic ***,a telemanipulative robotic surgical system was introduced,providing laparoscopic instruments with wrist-arm technology and 3-dimensional visualization of theoperative *** present a case of 36-year-old female patient who had undergone elective cholecystectomy2 mo ago for gall stones and had a common bile duct injury during *** the stricture was old and complete it could not be tackled *** did a laparoscopic assisted adhesiolysis followed by robotic Roux-en-Y *** intraoperative complications or technical problems were *** period was uneventful and she was discharged on the 4th postoperative *** followup,she is doing well without evidence of jaundice or *** is the first reported case of robotic hepaticojejunostomy following common bile duct *** hybrid technique gives the patient benefit of laparoscopic adhesiolysis and robotic suturing.

关键词： Hepaticojejunostomy Common bile duct Robotic surge

Anticonvulsant potential of rosuvastatin in combination with carbamazepine and valproate in animal models of epilepsy

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World Journal of Methodology 2025年第2期15卷 137-144页

作者： Vandana Tayal Akash Mandal Ijasul Haque M Akhilesh mishra Bhupinder S Kalra Vandana Roy Department of Pharmacology Maulana Azad Medical CollegeNew Delhi 110002India Department of Pharmacology MES Medical CollegePerintalmanna 679338KeralaIndia Department of Central Animal Facility Maulana Azad Medical CollegeNew Delhi 110002India

BACKGROUND Epilepsy impacts millions of people,with many not responding to existing *** evidence links neuroinflammatory processes to *** exhibit anti-inflammatory and neuroprotective properties,potentially offering antiepileptic *** To evaluate the anticonvulsant effects of rosuvastatin in animal models of *** Ninety-six albino mice were divided into 16 *** the maximal electroshock seizure(MES)model,eight groups received intraperitoneal vehicle,carbama-zepine,rosuvastatin,or a *** measured included seizure protection[tonic hind limb extension(THLE)],duration of THLE,seizure duration,and *** the pentylenetetrazol(PTZ)model,eight groups were pretreated with vehicle,valproate,rosuvastatin,or a combination,with outcomes measured as seizure latency,seizure duration,and *** In the MES model,rosuvastatin exhibited protection against THLE in a small percentage of *** shortens the duration of THLE in a dose-dependent ***,none of these were statistically significant com-pared to the control *** combination of rosuvastatin 10 mg/kg with carbamazepine 4 mg/kg resulted in a significant reduction in seizure duration compared to the control group,better than carbamazepine alone at 4 mg/kg and 6 mg/*** the PTZ model,rosuvastatin alone showed no significant effects on latency,duration of seizure,or ***,rosuvastatin 10 mg/kg combined with valproate 100 mg/kg significantly delayed the onset of seizures,seizure duration and mortality percentage,better than valproate alone at 100 mg/*** Rosuvastatin enhanced the anticonvulsant effects of carbamazepine and *** studies are required to explore the antiepileptic potential of rosuvastatin at various doses,durations,dosage forms,routes and models.

关键词： Antiepileptic Anticonvulsant Statins Rosuvastatin Maximal electroshock seizure Pentylenetetrazol