Research on the control strategy of multi-port DC/DC energy router for the energy Internet by Wenzhong MA, Guancheng LI, Kuitong ZHANG, Shujuan YANG, Mengdi WEI, Yuzhen TANG, Yucheng SONG, Lei DONG

“…The characteristics and shortcomings of the current multi-port direct current (DC) to DC (DC/DC) energy router were analyzed.A multi-port DC/DC energy router for the energy Internet was optimized and designed.Through the analysis of the operating voltage requirements under different working conditions,the full-bridge proportional design of the sub-module was proposed.On this basis,an alternating current (AC) to DC (AC/DC) decoupling control strategy to realize riding through the DC fault without de-blocking any devices was proposed.The multi-port DC/DC energy router was used to realize the interconnection of multiple DC power grids with different voltage levels.It not only retained the advantages of low cost and low loss of the traditional DC autotransformer,but also effectively improved the shortcomings that the DC autotransformer cannot ride through the DC fault.Finally,the simulation test was carried out in the MATLAB/Simulink environment to verify the stability of the technology in the normal operation,the feasibility of suppressing the DC fault and the effectiveness of the control strategy.…”
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Accurate Flexible Temperature Sensor Based on Laser-Induced Graphene Material by Huang Kun, Liu Bin, Mostafa Orban, Qiu Donghai, Yang Hongbo

“…The sensor is of high accuracy, is easy to manufacture, and is of low cost. The sensor has high accuracy and is linear between 30°C and 40°C in the human body temperature ranges. …”
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TV-Based Caring Videophone System for the Elderly in the Smart Home Environment by Jingshuang Shen, Chongyang Zhang, Chuanwen Jiang

“…Based on the detailed analysis of the elderly’s physical and psychological characteristics, a TV-based caring videophone system for the elderly is developed: an embedded multimedia device is designed to implement the interactive video and audio processing and IP-based communication, in which TV is adopted as the display terminal to achieve a low-cost but high-quality service. Considering the user’s convenience, many personalized designs, such as photo-based address book, photo-click-dialing, and touch pad based remote controller, are developed to make the proposed videophone system more intuitive and easy to use for the elderly. …”
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Endoscopic Alcohol Injection Therapy of Giant Gastric Leiomyomas: An Alternative Method to Surgery by Burhan Ozdil, Hikmet Akkiz, Can Kece, Macit Sandikci

“…To the authors’ knowledge, the present study is the first report of the treatment of such hemorrhagic gastric tumours using this alternative and low-cost technique. Endoscopic local ethanol injection may be the treatment of choice in carefully selected patients with hemorrhagic leiomyomas of the upper gastrointestinal tract.…”
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Research on accurate and efficient coverage of 5G private network by Jingbo ZHAO, Shilei DONG, Tingyu HUANG, Mengxia CHEN, Peng HUANG

“…5G private network has become a new information infrastructure in all trades and professions because of its customizability, stable performance, safety and reliability.At the same time, due to the industry's higher requirements for business stability, certainty, energy conservation and low cost, 5G private network is urgently needed to achieve more accurate and efficient coverage than the public network.Taking the automated warehouse as a typical industry business scenario, a method to improve the accurate coverage of 5G private network by building a small experimental environment and optimizing the propagation model was proposed.Based on the refined modeling and simulation of the antenna gain of the typical space of the automated three-dimensional warehouse, combined with the test RSRP (Reference Signal Receiving Power) data of the typical space, the propagation model can be accurately corrected.According to the service level agreement (SLA) requirements of the industry terminal, the 5G private network accurate coverage parameters common to automated three-dimensional warehouses of different sizes can be obtained.…”
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Single-Layer Circularly Polarized Wide Band Reflectarray Antenna with High Aperture Efficiency by Xinyu Da, Jialiang Wu, Jing Zhao, Lin Baoqin, Kai Wu

“…A circularly polarized broadband low-cost reflectarray in Ku-band is presented using a novel single-layer subwavelength phase-shifting element. …”
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High-quality 100% Ce3+:(Lu1−xYx)2SiO5 single crystals grown by the hydrothermal technique by Encarnación G. Víllora, Makoto Saito, Kiyoshi Shimamura

“…The growth of large-size single crystals with improved scintillation properties at a low cost is envisaged.…”
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Photoactive Thin Silver Films by Atmospheric Pressure CVD by Heather M. Yates, Lucy A. Brook, David W. Sheel

“…This approach overcomes many of the previously encountered limitations to silver deposition by employing an atmospheric pressure process, low-cost and low-toxicity precursors. The resultant films are assessed for activity using stearic acid destruction as a model compound. …”
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Desenvolvimento de Cadastro Multifinalitário de baixo custo e plataforma web para sua atualização: contribuições de softwares livres e geotecnologias no planejamento territorial... by Maurício Rizzatti, Natália Lampert Batista, Pedro Leonardo Cezar Spode, Romario Trentin, Eduardo Augusto Werneck Ribeiro, Cezar Augusto Crummenauer

“…In this context, the objective of this study is to propose a low-cost MTC methodology using open-source software to aid decision-making and cadastral updates through a web application. …”
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Unravelling the Impact of an Additional Sex Chromosome in an Adult Female by Sigin George, Vikas Dagar, Barun Kumar Chakrabarty, N. Nagaraja

“…The patient was initially evaluated by a low-cost peripheral blood (PB) conventional karyotyping using standard cytogenetic protocols. …”
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Multiobjective-Optimized Design of a New UWB Antenna for UWB Applications by C. Moreno de Jong van Coevorden, M. Fernández Pantoja, Salvador G. García, A. Rubio Bretones, R. Gómez-Martín, K. Palmer

“…The ultrawideband performance with respect to antenna impedance and gain is achieved by an optimized resistive loading profile and flare angle. A low-cost prototype is manufactured and numerical simulations are validated with measurements.…”
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Numerical Simulations of Single-Step Holographic Interferometry for Split-Ring Metamaterial Fabrication by Zhiming Qi, Wenyao Liang

“…These results provide useful guidance for the effective and low-cost fabrication of metamaterials with diverse unitcells.…”
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Finite Volume Method for a Time-Dependent Convection-Diffusion-Reaction Equation with Small Parameters by Uzair Ahmed, Daoud Suleiman Mashat, Dalal Adnan Maturi

“…The efficiency of solving computationally partial differential equations can be illustrated by using a precise numerical method that yields remarkable precision at a low cost. The accuracy and computational efficiency of two second-order finite difference methods were investigated. …”
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Non-intermittent cooperative downloading approach for VANET by Yong XIE, bing WULi, xiang HEYan, Jing FAN, yi LIUBing

“…Internet access through access points (AP) for vehicles has the advantages of low cost, high-bandwidth and low latency. However,because of dark area (DA) around AP, vehicles have to take interm tent linking to Internet, result-ing in the QoS of network is difficult to be guaranteed.A non-intermittent cooperative downloading method (NICDM)for highway was proposed. …”
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Efficient Range Estimation in Beat Radio Interferometry by Bing Xu, Wangdong Qi, Li Wei, Su Zhang

“…The beat radio interferometry (BRI) is a novel ranging scheme that achieves high accuracy with low-cost devices. A major problem with BRI is the lack of an efficient range estimation method that is valid in general measurement configurations and accommodates large-scale scenarios. …”
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Effective Removal of Phosphate from Waste Water Based on Silica Nanoparticles by Tan Tai Nguyen

“…The phosphate removal based on SiNPs will offer several benefit such as an effective and low cost method, reliable to reuse as an effective slow release phosphate fertilizer.…”
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IoT sensing technology based on acoustic phase by Yang LIU, Wuxiong ZHANG, Weidong FANG

“…The perception and interaction technology between IoT devices is one of the necessary foundations for the development of the Internet of things.With the growing popularity of multimedia devices,such as smart phones,tablet,and home audio,the speakers and microphones are ubiquitous on these devices which make it possible to the low cost interaction between devices using acoustic signal.The low speed and low frequency physical properties of sound waves make the acoustic-based sensing technology have higher accuracy and lower computation.A phase based measurement method using acoustic signals was proposed,which could be used to measure high precision distance between different mobile devices and sound sources.In a certain range,firstly,the mobile device receives the single frequency acoustic signal transmitted by a sound source.The mobile device uses the sound signal to synchronize the phase between the mobile devices the sound source,and then calculates the distance between the mobile device and the sound source by calculating the phase difference during movement.…”
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Patient's Heart Beat and Temperature Monitoring System. by Mbabazi Caleb

“…This project aims at the design and implementation of a low cost but efficient and flexible heartbeat monitoring and alert system using GSM technology. …”
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Cobalt (II) phthalocyanine derived Co3O4@HCNFs as highly effective bifunctional electrocatalysts for iodide redox couple reduction (IRR) and oxygen reduction reaction (ORR) by Ziyu Guo, Wenyu Gong, Jianing Guo, Mingxing Wu

“…Developing low-cost electrocatalysts for iodide redox couple reduction (IRR) and oxygen reduction reaction (ORR), applied in dye-sensitized solar cells (DSCs) and Zinc-air batteries (ZABs) is of crucial significance for the fields of energy conversion and energy storage. …”
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A Robust and Space-Efficient Stack Management Method for Wireless Sensor Network OS with Scarce Hardware Resources by Seokhwan Kim, Seungku Kim, Doo-Seop Eom

“…Due to such requirements as low power consumption and low cost, sensor nodes commonly do not include advanced H/W features. …”
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