bluuebunny/crossref_metadata_2025_split huggingface dataset:
Induced radiofrequency fields in patients undergoing MR examinations: insights for risk assessment
Authors: Yao Aiping , Murbach Manuel , Goren Tolga , Zastrow Earl , Kainz Wolfgang , Kuster Niels 
Published: August 2021

Abstract

Purpose. To characterize and quantify the induced radiofrequency (RF) electric (E)-fields and B
1+rms fields in patients undergoing magnetic resonance (MR) examinations; to provide guidance on aspects of RF heating risks for patients with and without implants; and to discuss some strengths and limitations of safety assessments in current ISO, IEC, and ASTM standards to determine the RF heating risks for patients with and without implants.

Methods. Induced E-fields and B
1+rms fields during 1.5 T and 3 T MR examinations were numerically estimated for high-resolution patient models of the Virtual Population exposed to ten two-port birdcage RF coils from head to feet imaging landmarks over the full polarization space, as well as in surrogate ASTM phantoms.

Results. Worst-case B
1+rms exposure greater than 3.5 μT (1.5 T) and 2 μT (3 T) must be considered for all MR examinations at the Normal Operating Mode limit. Representative induced E-field and specific absorption rate distributions under different clinical scenarios allow quick estimation of clinical factors of high and reduced exposure. B
1 shimming can cause +6 dB enhancements to E-fields along implant trajectories. The distribution and magnitude of induced E-fields in the ASTM phantom differ from clinical exposures and are not always conservative for typical implant locations.

Conclusions. Field distributions in patient models are condensed, visualized for quick estimation of risks, and compared to those induced in the ASTM phantom. Induced E-fields in patient models can significantly exceed those in the surrogate ASTM phantom in some cases. In the recent 19
ε2 revision of the ASTM F2182 standard, the major shortcomings of previous versions have been addressed by requiring that the relationship between ASTM test conditions and in vivo tangential E-fields be established, e.g. numerically. With this requirement, the principal methods defined in the ASTM standard for passive implants are reconciled with those of the ISO 10974 standard for active implantable medical devices.
Detecting entanglement can be more effective with inequivalent mutually unbiased bases
Authors: Hiesmayr B C , McNulty D , Baek S , Singha Roy S , Bae J , Chruściński D 
Published: August 2021

Abstract
Mutually unbiased bases (MUBs) provide a standard tool in the verification of quantum states, especially when harnessing a complete set for optimal quantum state tomography. In this work, we investigate the detection of entanglement via inequivalent sets of MUBs, with a particular focus on unextendible MUBs. These are bases for which an additional unbiased basis cannot be constructed and, consequently, are unsuitable for quantum state verification. Here, we show that unextendible MUBs, as well as other inequivalent sets in higher dimensions, can be more effective in the verification of entanglement. Furthermore, we provide an efficient and systematic method to search for inequivalent MUBs and show that such sets occur regularly within the Heisenberg–Weyl MUBs, as the dimension increases. Our findings are particularly useful for experimentalists since they demonstrate that a clever selection of MUBs allows for entanglement detection with fewer measurements.
The minimally extended Varying Speed of Light (meVSL)
Authors: Lee Seokcheon 
Published: August 2021

Abstract
Even though there have been various models of the time-varying speed of light (VSL), they remain out of the mainstream because of their possible violation of physics laws built into fundamental physics. In order to be the VSL as a viable theory, it should inherit the success of special relativity including Maxwell equations and thermodynamics at least. For this purpose, we adopt the assumption that the speed of light, c̃, i.e., c̃[a], varies for the scale factor, a. The background FLRW universe can be defined by the constant cosmic time hypersurface using physical quantities such as temperature, density, c̃, etc. It is because they evolve in cosmic time and the homogeneity of the Universe demands that they must equal at the equal cosmic time. The variation of c̃ accompanies the joint variations of all related physical constants in order to satisfy the Lorentz invariance, thermodynamics, Bianchi identity, etc. We dub this VSL model as a “minimally extended VSL (meVSL)”. We derive cosmological observables of meVSL and obtain the constraints on the variation of c̃ by using current cosmological observations. Interestingly, both the cosmological redshift z and all geometrical distances except the luminosity distance of meVSL are the same as those of general relativity. However, the Hubble parameter of meVSL is rescaled as H(z) = (1+z)-b/4 H(GR)(z), where H(GR)(z) denotes the Hubble parameter obtained from general relativity. Thus, it might be used as an alternative solution for the tension of the Hubble parameter measurements. In this manuscript, we provide the main effects of the meVSL model on various cosmological observations including BBN, CMB, SZE, BAO, SNe, GWs, H, SL, and Δα. Compared to previous VSL models, meVSL might provide alternative solutions for various late time problems of the standard ΛCDM model. This is the main motivation for proposing the meVSL model.
Neutron stars in f(R,T) gravity with conserved energy-momentum tensor: Hydrostatic equilibrium and asteroseismology
Authors: Pretel Juan M.Z. , Jorás Sergio E. , Reis Ribamar R.R. , Arbañil José D.V. 
Published: August 2021

Abstract
We investigate the equilibrium and radial stability of spherically symmetric relativistic stars, considering a polytropic equation of state (EoS), within the framework of f(R,T) gravity with a conservative energy-momentum tensor. Both modified stellar structure equations and Chandrasekhar's pulsation equations are derived for the f(R,T)= R+ h(T) gravity model, where the function h(T) assumes a specific form in order to safeguard the conservation equation for the energy-momentum tensor. The neutron star properties, such as radius, mass, binding energy and oscillation spectrum are studied in detail. Our results show that a cusp — which signals the appearance of instability — is formed when the binding energy is plotted as a function of the compact star proper mass. We find that the squared frequency of the fundamental vibration mode passes through zero at the central-density value corresponding to such a cusp where the binding energy is a minimum.
Quantum multicast communication over the butterfly network
Authors: Pan Xing-Bo , Chen Xiu-Bo , Xu Gang , Dou Zhao , Li Zong-Peng , Yang Yi-Xian 
Published: August 2021

Abstract
We propose a scheme where one can exploit auxiliary resources to achieve quantum multicast communication with network coding over the butterfly network. In this paper, we propose the quantum 2-pair multicast communication scheme, and extend it to k-pair multicast communication over the extended butterfly network. Firstly, an EPR pair is shared between each adjacent node on the butterfly network, and make use of local operation and classical communication to generate entangled relationship between non-adjacent nodes. Secondly, each sender adds auxiliary particles according to the multicast number k, in which the CNOT operations are applied to form the multi-particle entangled state. Finally, combined with network coding and free classical communication, quantum multicast communication based on quantum measurements is completed over the extended butterfly network. Not only the bottleneck problem is solved, but also quantum multicast communication can be completed in our scheme. At the same time, regardless of multicast number k, the maximum capacity of classical channel is 2 bits, and quantum channel is used only once.
The Effects of Air Change Rate and Indoor Particle Generation on Indoor Particulate Concentration Based on Numerical Simulation
Authors: Li Hao , Yi Weiqi 
Published: August 2021

Abstract
The influences of air change rates and particle generation on indoor particulate concentrations in a cleanroom were studied by eight numerical simulation cases. Results show that the influence of ACH on indoor particulate concentration is very significant than that of particle generated concentration when ACH great than 4.0 h-1. And ACH = 4.0 h-1 seems a suitable value for central air conditioning (AC) systems in residential buildings and public buildings.
Research on the Quality Evaluation of Teaching Reform Project in Colleges Based on Computer
Authors: Zhang Dan 
Published: August 2021

Abstract
With the rapid development and change of society, the teaching of colleges should continue to follow up the reform. In addition, with the deepening of teaching reform in colleges, there is an urgent need to develop a quality evaluation system suitable for teaching reform projects. This paper first introduces the theoretical basis of the quality evaluation of teaching reform projects in colleges, then analyzes the construction of the quality evaluation index system of teaching reform projects based on computer, and finally introduces the quality evaluation methods of teaching reform projects.
RETRACTED: Innovative Research on the Integration of Boneless Chinese Painting Techniques and Commercial Comics Based on Big Data Analysis
Authors: Chang Song 
Published: August 2021

Abstract
Nationality is the world. A new type of comic theme with Chinese characteristics has become a new art form and popular trend, and is deeply loved by people. This article focuses on the development of Chinese comics and the needs of authors and customer groups, analyzes the development and creation of Chinese comics, and analyzes the advantages of introducing unique Chinese painting methods into comics from three perspectives: composition, coloring and character design, To bring the boneless technology of Chinese painting into comics, and at the same time, Chinese commercial comics use the Internet and other media to find more commercial cooperation to make Chinese comics and commercial comics more harmonious.
Research on the Integration of Art Production and Education and Urban Ecosystem Construction Based on Digital Media Technology
Authors: Wang Xianghui 
Published: August 2021

Abstract
The development speed of digital media technology is increasing year by year. However, the lack of artistic talents in digital media is a serious problem. In many schools, the upper limit of the level of digital art graduates is very low. The integration of production and education of art has become the main research direction of scholars. In order to effectively implement the green city rectification policy, the State advocates the construction of urban ecosystem. However, the traditional theory of ecosystem construction has been ignored. Many scholars put forward the construction of urban ecological circle with the integration of digital art illustration and teaching. This paper analyzes the characteristics of the integration of art production and education in digital media. On this basis, this paper puts forward the construction path of urbanization ecosystem.
Research on the Application Of Blockchain Technology in Financial Statement Auditing
Authors: He Jiaxuan 
Published: August 2021

Abstract
The audit of financial statements is an important content of business management, improve the quality of financial statements audit work can understand the business status of enterprises, combined with the actual financial status of enterprises to develop in line with the enterprise’s own development of enterprise planning. This paper firstly explains the deficiencies of financial statement auditing and the concept and advantages of blockchain technology, and at the same time puts forward countermeasures and suggestions for the development of audit industry under blockchain technology for the reference of readers.
Kinematics Analysis and Research on Volleyball Serving Using Computer Technology
Authors: Xiong Yulong 
Published: August 2021

Abstract
As one of the most important competitive sports, volleyball is gradually developed in many countries and regions due to its strong interest and simple operation. Volleyball serve is a basic technique for beginners in volleyball sports. This paper firstly analyzes volleyball serve technology and volleyball serve kinematics. At the same time, it makes use of computer technology to analyze volleyball serve kinematics for readers’ reference.
Application of Human-Computer Interaction Based on Big Data Technology in Electronic Product Design
Authors: Xu Ruijing , Chen Hong 
Published: August 2021

Abstract
With the development of information technology and the improvement of people’s living standards, people’s requirements for product design are becoming higher and higher. As the necessary equipment in people’s work and life, electronic products occupy a very important position on the way forward of the society. In the contradiction between product and human demand, human-computer interaction technology comes into being, which provides a solution to this problem. This technology builds a bridge between the product and the demand, so that the product can really serve people, rather than people to adapt to the design of the product. Accordingly, this study discusses the basic situation of human-computer interaction technology, the concept of electronic product design and the application of human-computer interaction technology in electronic product design.
Research on the New Development Direction of Visual Communication Based on VR Virtual Reality
Authors: Lyu Pan , Ma Quanwei 
Published: August 2021

Abstract
Nowadays, with the development of science and technology, VR has become a very popular vocabulary. Moreover, VR technology has gradually penetrated into people’s lives. Many games can be played through virtual reality technology. People can experience the fun of games and have a more vivid picture through VR technology. This paper introduces VR technology in detail, related concepts and technology. Especially, the application of VR technology has been improved, and this project has great development prospects.
Construction and Application of College English Teaching Management System Based on Computer Software
Authors: Xiang Duoli 
Published: August 2021

Abstract
The foundation of English education in China is relatively solid. China’s compulsory education policy also tends to high-quality English education. Many parents hope their children can receive more advanced English education. They even spend a lot of money on English education and training institutions. With the increasing trend of internationalization, English language has become an important language way for us to communicate with international friends. This paper briefly introduces the historical process of English teaching. The research of English teaching management system based on computer software technology has become an important topic for many linguists.
Research on the Integration of Online-offline Hybrid English Teaching in Information Structure
Authors: Wang Zengguang 
Published: August 2021

Abstract
As a kind of teaching strategy based on information technology, hybrid teaching has the typical characteristics of customization and multi dimension, which helps students free from spactio-temporal limitations in English learning process and carry out English learning more freely and flexibly. Based on this, this paper first studies the feasibility of English online-offline hybrid teaching integration, then analyses the implementation of English online-offline hybrid teaching, and finally gives the optimization strategy of English online-offline hybrid teaching based on informatization.
Research on the Challenge of Computer Artificial Intelligence Technology to Financial Risk Management
Authors: Liu Wei , Hong Yijiang 
Published: August 2021

Abstract
Artificial intelligence is widely used in people’s lives. With the popularity of artificial intelligence, the financial industry has also ushered in reforms. With other technical support, the integration of artificial intelligence technology has formed a new model of financial industry development, that is,“ Internet + big data + artificial intelligence + financial risk control”. It has gradually become popular in this rapidly developing society. And this new model will be the main form of financial risk control in the future. This paper mainly sorts out the application status of artificial intelligence in the financial field, and it analyzes its advantages and problems.
Research on the Design and Implementation of FTP Client Based on Java
Authors: Chu Liangyan 
Published: August 2021

Abstract
Java program has the advantages of convenient operation, and has a powerful processing routine library for TCP / IP protocol. Java based utilizations can achieve efficient access to remote objects. Based on this, this paper first analyses the characteristics and functions of java development tool environment, then studies the requirement analysis of FTP client system based on Java development, and finally analyses the specific process of FTP client design and Implementation Based on Java development.
Research on the Application of Computer Technology in Data Processing of University Chemical Experiment
Authors: Chen Jiaming 
Published: August 2021

Abstract
University chemistry is a subject based on experimental verification, which is inseparable from instruments and data analysis. However, with the increasing complexity of university chemistry experiments, we need to use modern instruments for analysis, which can record experimental data more accurately. However, there are clear requirements for the processing of experimental data. With the different purposes of the experiment, we need different graphics and data analysis, which needs the help of computer technology. Through the computer technology, we can realize the automation of chemical experiment instrument operation, which can also automatically collect and transmit test data. Therefore, computer technology not only promotes the development of modern chemical instrument technology, but also improves the processing of university chemical experiment data. First of all, this paper analyzes the main application software technology. Then, this paper puts forward some examples for MATLAB and origin respectively.
RETRACTED: Research on the Optimal Deployment and Scheduling Strategy of Big Data Application in Cloud Computing Platform
Authors: Lu Lihua 
Published: August 2021

Abstract
With the progress and development of science and technology and society, all walks of life in China have started to actively apply big data. Big data has become the most important part and plays an indispensable role in the development of today’s society. In recent years, in the application of big data based on cloud computing platform, the flexibility of big data has been fully reflected in the resource allocation. At the same time, in the actual application of big data, cloud computing platform can make corresponding reflection based on the requirements of big data for relevant platforms. Moreover, the charging behavior based on cloud service will be carried out in accordance with the actual demand. For users in today’s era, this is completely in line with their consumption pattern, especially for small and medium-sized users in today’s market. The advantages and characteristics of this applicable business are particularly prominent. However, in the application process of big data technology based on cloud computing platform, there are still some problems that need our attention. This paper makes an in-depth discussion on the performance of big data in the cloud computing platform to make a brief analysis on the optimization deployment and scheduling strategy of big data application in the cloud computing platform.
Analysis on the New Ways of International Trade Cross Border E-Commerce Research from Big Data Theory
Authors: Tang Xiaojing 
Published: August 2021

Abstract
With the popularity of the Internet, the server terminal will receive massive data every day. Therefore, China has entered the era of big data. Mobile terminal applications have subverted people’s traditional user experience, which has brought significant changes in business model. Therefore, big data has become an important strategic resource, which has become an important means of technological innovation used by enterprises. Through big data mining and other technologies, enterprises can analyze the global price changes in international trade (hereinafter referred to as ITT). By analyzing user behavior, enterprises can push appropriate products to users. Therefore, big data technology has been applied to ITT, especially Cross Border E-Commerce (hereinafter referred to as CBEC). Therefore, this paper first analyzes the application process of big data technology to CBEC. Then, this paper puts forward the future business model. Finally, some suggestions are put forward.
Analysis on the Bottleneck and Countermeasures of Commercial Gymnasium Operation Based on Big Data
Authors: Deng Kaiyuan 
Published: August 2021

Abstract
According to the analysis of big data, With the development of the society, people’s living standard is improved, and the consciousness of the whole people’s body-building is gradually enhanced. This study uses the methods of literature, interview and logic to study the operation of the commercial gym in Shanghai as the research object of the commercial gymnasium in Shanghai.
Research on the Cultivation of College Students’ Innovative and Entrepreneurship Ability Based on the Internet Technology
Authors: Gao Rui 
Published: August 2021

Abstract
At present, China’s economy is in an important stage of transformation and upgrading. In order to provide continuous driving force for development, we must attach importance to the improvement of the comprehensive quality of college students and effectively solve the existing employment problems. Especially in the rapid development of information technology today, in addition to mastering the basic professional literacy, college students also need to have a certain ability to innovate and start a business, so as to better meet the needs of the market development for the full range of talent types, and more in line with the requirements of the phased development of our country. Based on this, this paper will study how to cultivate the innovative and entrepreneurial ability of college students in the computer Internet era, hoping to provide some help to the actual university education, so that colleges and universities can really cultivate generation after generation of high-quality innovative talents for the rapid development of society [1].
Research on the Design of Intelligent Data Acquisition Platform for Wireless Monitoring of Rotating Machinery Based on Arm
Authors: Suo Xiangfeng , Han Xue 
Published: August 2021

Abstract
Rotating machinery is the most extensive type of machinery in the industry, which is the key equipment in many industries. Therefore, once the rotating machinery fails, it will cause huge economic losses, which requires us to monitor and diagnose the equipment status. Therefore, the rotating mechanical equipment must have an intelligent data acquisition system, which can collect the state of mechanical operation. Through real-time information collection, the rotating machinery can be monitored and diagnosed in real time, which will reduce the accident shutdown rate and maintenance costs. Therefore, the rotating machinery can reduce the production cost, which will avoid rabbit accidents and ensure the safety of production. Arm is an embedded computer system, which can be used for intelligent data collection flexibly. Firstly, this paper analyzes the application of embedded system in the rotating machinery monitoring system. Then, the hardware scheme and software of the system are designed.