SEVENTH INTERNATIONAL SYMPOSIUM ON NEGATIVE IONS, BEAMS AND SOURCES (NIBS 2020)最新文献

{"title":"Analyze and develop a model for sentimental reviews of e-government services using deep learning algorithms with CNN framework","authors":"S. Alagumuthukrishnan, A. Nirmalkumar, G. Devi","doi":"10.1063/5.0057936","DOIUrl":"https://doi.org/10.1063/5.0057936","url":null,"abstract":"Nowadays the government can introduce many new schemes through online and uploaded in their official web portal. Publics can able to access and avail those facilities on internet by reading news and notifications of such schemes. In order to improve their governance the reviews of the public will be very significant. Since these reviews will help the government to take better decisions. By achieving this, the government may get peoples reviews about such schemes. In the existing system reviews such as manual, oral and somewhere online modes were available for facilitating e-government services. But Artificial Intelligence based techniques like facial recognition and sentimental reviews of the public is not incorporated in the current scenario. So in order to facilitate the government to provide better decision the software based deep learning algorithm called Convolution Neural Networks (CNN) is implemented to analysing the sentimental reviews of e-Government services. In this framework three models were developed to implement a concept of multiple CNN models in which first model can recognize people’s hand written digits, second model can detect sentiments from text sentence which can be given by people about government services, third model can detect sentiment from person face image. This paper involves analyze some of the applications to make the user friendly. In order to make the application more accessible and navigations the well-suited browser, need to be selected. The navigations could be done from one screen to the other in sequence and also help the users to reduce the typing action. Using this method, we can reduce the human interventions in the analysing the reviews and consolidated the result which specifies the overall conclusion of the service.","PeriodicalId":21797,"journal":{"name":"SEVENTH INTERNATIONAL SYMPOSIUM ON NEGATIVE IONS, BEAMS AND SOURCES (NIBS 2020)","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77648771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design of an efficient crank shaft for four wheeler passenger vehicle by using FEA","authors":"N. Prabhakar, S. S. Kumar, K. Rao","doi":"10.1063/5.0058363","DOIUrl":"https://doi.org/10.1063/5.0058363","url":null,"abstract":"Crankshaft plays a vital role to transform reciprocating motion into rotary motion. The design and analysis of the crankshaft is very important to improve the performance of I.C. Engine. In general the crankshaft is subjected to different pressure loads with respect to crank angle, therefore design and analysis of the crankshaft is important to increase the life of the four stroke engine. The main objective of this paper is to increase the life of the crankshaft of four stroke diesel engine by changing the main bearing diameter and crank web height in the existing design. The design was done by using CATIA software and analysis was done by using ANSYS. Two types of analysis, i.e. modal analysis and fatigue analysis have been carried out.","PeriodicalId":21797,"journal":{"name":"SEVENTH INTERNATIONAL SYMPOSIUM ON NEGATIVE IONS, BEAMS AND SOURCES (NIBS 2020)","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78393668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-speed hybrid tree multiplier hardware using modified Wallace and Dadda method","authors":"Rashmi Samanth, S. Pooja, S. G. Nayak","doi":"10.1063/5.0057908","DOIUrl":"https://doi.org/10.1063/5.0057908","url":null,"abstract":"","PeriodicalId":21797,"journal":{"name":"SEVENTH INTERNATIONAL SYMPOSIUM ON NEGATIVE IONS, BEAMS AND SOURCES (NIBS 2020)","volume":"44 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74395546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of composite adsorber with graphite nanofiber based nanofluid as coolant","authors":"Vaibhav N. Deshmukh, S. Radhakrishnan, R. Kulkarni","doi":"10.1063/5.0057949","DOIUrl":"https://doi.org/10.1063/5.0057949","url":null,"abstract":"The use of composite adsorbent with nano particle additives having high surface area can lead to enhanced heat transfer, higher adsorption capacity and faster rate leading to better adsorber performance. The objectives of the present study were to investigate the effectiveness of nanofluid as a cooling fluid of a composite adsorber by carrying out nanofluid characterization and to investigate adsorption-desorption characteristics of a composite adsorbent for ammonia as an adsorbate.An experimental set up with tube-in-tube type configuration was constructed to monitor the thermal characteristics (heat transfer from and to the adsorber) and ammonia adsorption/desorption rates. The composite of calcium chloride with activated carbon and expanded graphite nanoparticles was made having different concentrations of CaCl2 ranging from 40 % to 80 % in the composite and expanded natural graphite (ENG) content ranging from 0-3 % by weight. The desorption characteristics were studied at different temperatures from 70° C to 110° C. The cooling fluid with and without graphite nanofibers (GNF) was circulated in the inner tube at different flow rates from 5 LPH to 25 LPH.From the experimentation on adsorption-desorption characteristics, it was found that the total amount of ammonia adsorbed increased from 133 g for 50:50 composition of CaCl2:AC to 156 g for CaCl2:AC composition of 50:50 with the addition of 3 % ENG nanoparticles. Also the adsorption process time reduced from 22 minutes to 18 minutes. For 50 % CaCl2 in the composite the temperature at which the maximum desorption occurred was 70°C.So, desorption could occur at lower temperature, which is advantageous as it increases the number of options for heat sources to be used. When nanofluid was used as a cooling fluid of the composite adsorber, the total amount of ammonia adsorbed increased from 79.411 g for basefluid to 90.206 g for 0.4 % graphite nanofiber nanofluid for flow rate of 25 LPH. With the use of composite adsorbent of CaCl2:AC of 50:50 composition and addition of expanded natural graphite (ENG) by 3% and when 0.4 % graphite nanofiber nanofluid was used as a cooling fluid, the maximum ammonia was adsorbed up to the bed length of 600 mm only out of the total bed length of 1 m indicating the possibility of reduction in the size of an adsorber.","PeriodicalId":21797,"journal":{"name":"SEVENTH INTERNATIONAL SYMPOSIUM ON NEGATIVE IONS, BEAMS AND SOURCES (NIBS 2020)","volume":"90 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83188066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design and analysis of head expander of electrodynamic shaker for vibration testing","authors":"Vinod Kumar Bandu, Venkata Narayana Yenugula, B. Shirish","doi":"10.1063/5.0058032","DOIUrl":"https://doi.org/10.1063/5.0058032","url":null,"abstract":"Design of Head Expander (HE) for environmental vibration testing components with a required test frequency range has become very important, because it is an interface between electrodynamics vibration shaker and test specimen. The HE subjected to resonant and anti-resonant frequencies due to limitations of mass/stiffness properties. The random vibration and harmonic analysis of existing Head Expander was carried out and validated with tested results in the present work. The proposed new features Head Expander is designed by introducing three different hole-patterns which accommodates the different configurations of work pieces for vibration testing. Modal analysis, random vibration and harmonic analysis were carried out using generalized finite element software, ANSYS. The GRMS values of proposed HE design are compared with GRMS values of NAVMAT P-9492 work and found satisfactory.","PeriodicalId":21797,"journal":{"name":"SEVENTH INTERNATIONAL SYMPOSIUM ON NEGATIVE IONS, BEAMS AND SOURCES (NIBS 2020)","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81003257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The data intactness of efficient audit service outsourcing for data integrity in clouds","authors":"U. Veeresh, G. Kumar, S. Asif","doi":"10.1063/5.0057948","DOIUrl":"https://doi.org/10.1063/5.0057948","url":null,"abstract":"The cloud is the web-based computer which allows services to be exchanged. It enables users to use the application on any device with internet or intranet access without having an application installed and allows users to access their personal files and applications. Many people have recently used databases to store their data in the cloud. This is useful because it helps users to save data and allows users to access it anywhere and anywhere. The cloud has changed the way applications and databases are saved. Nowadays, running computing servers are stored in cloud computing. The main consideration of cloud information storage is the protection of cloud-specified information. The modern phenomenon used to store and handle data without investments in resources created many security problems that do not seem fully understood. This article focuses on cloud server information security and integrity. A third-party investigator is completed with the verification of data integrity who can sporadically check data integrity on behalf of his consumers.","PeriodicalId":21797,"journal":{"name":"SEVENTH INTERNATIONAL SYMPOSIUM ON NEGATIVE IONS, BEAMS AND SOURCES (NIBS 2020)","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87075193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research activities of RF-based negative ion source in the ASIPP","authors":"Yahong Xie, Hu Chundong, Wei Jianglong, Gu Yuming, Jiang Caichao, Yongjian Xu, Liang Lizhen, Yuanzhe Zhao, Xie Yuanlai","doi":"10.1063/5.0057461","DOIUrl":"https://doi.org/10.1063/5.0057461","url":null,"abstract":"The Comprehensive Research Facility for Fusion Technology (CRAFT) is a large scientific programme that is preferentially deployed for the construction of major national science and technology infrastructures. A negative ion-based neutral beam injector (NNBI) with beam energy of 400 keV, beam power of 2 MW and beam duration of 100 s is one of the projects. A radio frequency (RF) based negative beam source was designed for the CRAFT NNBI system. In order to understand the physics and pre-study the engineering problems for RF negative beam sources, a prototype source with a single driver was developed. Recently, this source was tested on a test facility with RF plasma generation, negative ion production and extraction. The long pulse plasma discharge and negative ion beam extraction with a three electrode accelerator were achieved successfully. The extracted ion current is 153 A/m2 with Cs injection and the ratio of electrons to negative ions is around 0.3. It lays good foundations for the R&D of negative ion sources for the CRAFT NNBI system. The details of design and experimental results of the beam source are given in this paper.","PeriodicalId":21797,"journal":{"name":"SEVENTH INTERNATIONAL SYMPOSIUM ON NEGATIVE IONS, BEAMS AND SOURCES (NIBS 2020)","volume":"70 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84100338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"COVID-19 image classification techniques in medical analysis using deep representations","authors":"Morarjee Kolla, H. R. Rao, N. Kumar","doi":"10.1063/5.0057943","DOIUrl":"https://doi.org/10.1063/5.0057943","url":null,"abstract":"Covid-19 is a fast-growing disease that affects human health with contacts nowadays. The medical community has not found any vaccine for immediate use, and some countries recently released vaccines. The human health and financial status of various countries spoiled recently with this virus. COVID-19 vaccine research is at the clinical trial stage in many countries. Mainly this disease affects the lungs of the patients. Recently deep learning approaches are widely using in radiographic image classifications with large-scale data. Convolutional Neural Networks (CNN) are widely used to diagnose COVID-19 pneumonia classification on Chest radiographic images to help radiologists in medical analysis. Recently some researchers developed tools to detect the virus, and they reduce the time of chest X-ray interpretation. This article discusses methods that can help protect themselves from those already infected with the virus by classifying the large-scale radiographic images with deep learning models. This study compares various methodologies and observes exciting insights for future research directions. © 2021 Author(s).","PeriodicalId":21797,"journal":{"name":"SEVENTH INTERNATIONAL SYMPOSIUM ON NEGATIVE IONS, BEAMS AND SOURCES (NIBS 2020)","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88169387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Plasma electrode shape suitable for plasma electrode performance study","authors":"K. Bito, M. Sasao, M. Kisaki, M. Wada","doi":"10.1063/5.0057489","DOIUrl":"https://doi.org/10.1063/5.0057489","url":null,"abstract":"A compact ECR ion source was used to investigate the effect that the shape of the plasma electrode (PE) has on the surface production of negative hydrogen (H−) ions. A C12A7 electride PE produced ten times more H-ion current compared with a molybdenum (Mo) PE of the identical design. Four times more H- ion current was obtained when the ion source plasma faces the 45-degree tapered hole opened on the surface of the electride PE as compared to the current obtained from a plasma facing the flat side of the PE. This enhancement in H- ion current may indicate larger surface production of H− ions by the enlarged surface area. A Mo PE also showed a similar effect but with less pronounced H- ion current enhancement. A beam trajectory study showed that the beam divergence was larger when the source plasma faced against the tapered side of the PE.","PeriodicalId":21797,"journal":{"name":"SEVENTH INTERNATIONAL SYMPOSIUM ON NEGATIVE IONS, BEAMS AND SOURCES (NIBS 2020)","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90620430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of the population density of excited atomic hydrogen in negative hydrogen ion sources based on a collisional-radiative model","authors":"Z. Li, D. Li, J. Yang, P. Chen, C. Zuo, F. Song, D. Chen","doi":"10.1063/5.0058485","DOIUrl":"https://doi.org/10.1063/5.0058485","url":null,"abstract":"Collisional-radiative (CR) models are useful to analyze the dynamic process of excited states and support the interpretation of excited population densities measured for example by optical emission spectroscopy (OES). A CR model of atomic hydrogen is described, in which the population densities of the excited states are coupled to the densities of ground state H, H2 and H2+. The three coupling channels, namely excitation of H, dissociative excitation of H2 and dissociative recombination of H2+, usually account for the main contributions to the excited hydrogen atoms in cesium free negative hydrogen ion sources. The population densities of excited hydrogen atom are presented for each channel. They have a similar dependence on electron density for the three channels. Furthermore, the influences of varying electron energy distribution function (EEDF) on the excited state density are discussed. Finally, the described CR model is applied to OES in an ICP hydrogen discharge and the estimated plasma parameters are given.","PeriodicalId":21797,"journal":{"name":"SEVENTH INTERNATIONAL SYMPOSIUM ON NEGATIVE IONS, BEAMS AND SOURCES (NIBS 2020)","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87533845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}