A new method to improve 5G coverage of urban grid roads by Yejiang ZHANG, Jie CHEN, Jian HU, Xiaokang YANG, Yun LU, Teng LIANG

“…Urban grid road is an important use scenario for mobile communication users.Compared with other static scenes, UE mobility on the road leads to relatively poor customer perception.The traditional urban grid road test optimization has some pain points, such as incomplete regulation, low optimization efficiency, repeated work orders, no focus and so on.A new method to improve 5G coverage of urban grid roads was proposed.The proposed method introduces the concept of problem circle, realizes the effective aggregation of sporadic test problem points, and uses“aggregation degree” and “repetition degree” to quantitatively identify the priority of test problems.By introducing the concepts of “ideal azimuth” and “appropriate cell”, the method of the optimal coverage cell of the problem circle was proposed, which can effectively output the optimization scheme of the problem circle.This method has been deployed in the current network and effectively supports the test and optimization of urban grid roads.The 5G coverage rate has increased from 89.95% to 98.86%.…”
Get full text

A PEDESTRIAN STEP COUNTING PARAMETER DETECTION METHOD AIDED WITH ANGULAR VELOCITY INFORMAITON by WANG Ping, ZHANG GuangPeng, ZHANG YanShun, HUANG ShuFeng, YAO Juan

“…Then peak signal of vertical accelerometer output is used to detect steps in common. In 27 experiments,which pedestrian walked certain steps and interference of activities ups and downs in-situ were brought in,the average accuracy rate of peak detection method and this method was 85. 8%,98. 84% respectively. …”
Get full text

Preparing Schrödinger Cat States in a Microwave Cavity Using a Neural Network by Hector Hutin, Pavlo Bilous, Chengzhi Ye, Sepideh Abdollahi, Loris Cros, Tom Dvir, Tirth Shah, Yonatan Cohen, Audrey Bienfait, Florian Marquardt, Benjamin Huard

“…We show that it is possible to teach a neural network to output optimized control pulses for a whole family of quantum states. …”
Get full text

Joint Simulation of a Marine High Power Hydraulic Control Clutch Transmission System by Wang Xuezhi, Yan Ze, Feng Liju, Chen Kexin, Wang Yongfan, Zhan Qingxin, Li Chao, Qu Dongyue

“…With the given parameters, the visual calculation results can be output. The simulation results show that the dynamic characteristics and impact load of the gear clutch during the axial engagement are affected by the torsional stiffness of the active end and the end face structure of the gear. …”
Get full text

On the Properties of Reachability, Observability, Controllability, and Constructibility of Discrete-Time Positive Time-Invariant Linear Systems with Aperiodic Choice of the Samplin... by M. De la Sen

“…Controllability and constructibility hold globally only asymptotically under close conditions to the above ones guaranteeing reachability/observability provided that the matrix of dynamics of the continuous-time system, required to be a Metzler matrix for the system's positivity, is furthermore a stability matrix while they hold in finite time only for regions excluding the zero vector of the first orthant of the state space or output space, respectively. Some related properties can be deduced for continuous-time systems and for piecewise constant discrete-time ones from the above general framework.…”
Get full text

Ein Blutegel wird salonfähig. Tiere, Menschen und Maschinen im 19. Jahrhundert by Christian Kassung

“…Lorsque le médecin anglais George Merryweather présente son Tempest Pronosticator en 1851 à l’Exposition universelle de Londres, ce ne sont pourtant pas des données météorologiques au sens actuel du terme qui sont communiquées, mais plutôt l’« instinct animal » transmis par des sangsues. …”
Get full text

Improved Dynamic Response of a Single-Phase-Integrated KY Boost Converter with an MLI System of a DC-AC Converter in Motor Speed Regulation by V. Mohan, K. Nandakumar

“…The main purpose of this suggested technique is to match the output current, total harmonic distortion (THD), and dynamic response of closed-loop PI and FOPID-controlled KBC-MLI systems. …”
Get full text

Outage performance analysis for multi-UAV relay systems with threshold-based DF protocol by Zhenlei DAN, Xuewen WU, Jian OUYANG, Xiaoxiao WANG, Chenwei GU

“…The unmanned aerial vehicle (UAV) relay system has become a hot topic as an effective method for the remote transmission in wireless communications.By taking path loss into account,a relay cooperative transmission system model based on multiple UAVs was established firstly,and the maximum output signal-to-noise ratio (SNR) of the system with threshold-based decode-and-forward (DF) protocol was obtained.Then,by assuming that both the uplink and downlink experience Rician distribution,the closed-form expression for outage probability (OP) of the considered system with multiple UAVs was derived.Furthermore,the asymptotic OP formula at high SNR was also derived to show the diversity order and array gain of the considered system,which were convenient to reveal the effects of system parameters on the outage performance.Finally,the computer simulations verify the correctness of the theoretical analysis,and reveal the effect of the relay number,antenna number and the threshold on the system outage performance,thus the proposed scheme can provide guidance for the system design and application.…”
Get full text

A conceptual flow field with metallic foam for enhanced performance and thermal management in a PEM fuel cell by Pouya Barnoon

“…The flow field configuration significantly influences the output power of PEMFCs. Common designs often result in lower current densities, making it challenging to achieve higher current density and better uniformity of reactant gases. …”
Get full text

Fault Feature Extraction of Gear Crack based on QPSO-Volterra by Chen Li, Xiaojuan Wei, Ningzhou Li

“…In view of the limitation of current mainstream methods of gear crack fault detection (that is only using the system response as research object, and seldom considering the input effect on fault feature extraction), and taking into account its dynamic characteristics as a kind of typical nonlinear system, by applying Volterra series theory into different states of gear meshing transmission system, for fully taking the advantage of Volterra series, which can use both the input and output data of system to describe the nonlinear characteristics of system. …”
Get full text

SIGNAL FLOW GRAPH ANALYSIS METHOD FOR KINEMATIC CHARACTERISTICS OF SINGLE DEGREE OF FREEDOM PLANETARY GEAR TRAIN by ZHOU XinTao, CUI YaHui, YAN HaiTao, GAO Jing, LI LongLong

“…Reuse the calculation rules of signal flow graph,and got a variety of planetary gear train speed relation of input and output of the transmission components,the conversion ratio of the transmission system. …”
Get full text

Des femmes difficiles en psychiatrie (1933-1960) by Véronique Fau-Vincenti

“…Le propos consiste ici à exposer le cas de femmes, parfois délinquantes et le plus souvent hors des normes attendues, qui ont été préemptées par les professionnels de la psychiatrie en raison de leurs attitudes ou de leurs actes. Mais surtout, en filigrane, se lisent les préjugés sociétaux et les tâtonnements médico-légaux  appliqués à des femmes plus souvent dérangeantes que « dérangées » : filles-mère, rebelles, insoumises, délinquantes ou en rupture de ban ; celles internées à la section Henri-Colin de Villejuif se sont avérées être avant tout des cas sociaux embarrassants et par la même difficiles.…”
Get full text

The Place of Place in the 21st-Century American West by O. Alan Weltzien

“…Cet article soutient des arguments de nature psychologique et littéraire et propose le palimpseste, plutôt que le rhizome, comme métaphore la plus adéquate. …”
Get full text

Research on the Statistical Properties and Stability of Complex Interindustrial Networks by Xinyu Cheng

“…This study consolidates input-output data from 42 sectors across 31 provinces and regions in China into a unified dataset for 42 industrial sectors within eight major economic zones. …”
Get full text

Exploring the nonlinear coded superposed modulation MISO visible light communication system by Zengyi XU, Wenqing NIU, Hui CHEN, Zhixue HE, Nan CHI

“…The light-emitting diode (LED) based visible light multi-input single-output (MISO) system usually suffers from the nonlinearity in LED and its incoherent nature in emission.Adopting precoding would alleviate this limitation at comparatively lower cost.Existing researches usually apply the same coding scheme to all the channels.An asymmetric coding scheme was proposed, which nonlinearly encodes one of the two channels in a MISO system.This solution enlarges the dynamic range of the uncoded channel at the cost of a higher bit error ratio (BER) in the coded one.When the BER threshold is set at 3.8×10^-3, the uncoded channel gains a dynamic range 30% larger than that of the coded one.If this solution is combined with flexible forward error correction redundancy, it would allow the system to adapt to varying channel condition while still maintaining the communication in both channels.This research would be beneficial in the study on indoor or underwater visible light communication (VLC) system.…”
Get full text

The Use of Adenosine to Enable Safe Implantation of Transcatheter Tricuspid Valve by Vicki Zeniou, Shmuel Chen, Mony Shuvy, David Luria, Chaim Lotan, Haim D. Danenberg

“…The precision of the implantation has been established by increasing the heart rate (usually to 200 beats per minute) to the point of significantly reduced cardiac output and thus minimizing valve movement. Routinely, this tachycardia is induced by rapid pacing. …”
Get full text

TECHNO-ECONOMIC ANALYSIS OF BOILER WASTE HEAT-BASED BIOMASS DRYING SYSTEM OF A COAL COFIRING POWER PLANT by Mahpudi Baisir, Adi Surjosatyo, Hafif Dafiqurrohman

“…Reductions in energy output and operational duration should be avoided wherever possible because they have a significant impact on reducing profit.…”
Get full text

Prediction of Crack for Drilling Process on Alumina Using Neural Network and Taguchi Method by Kingsun Lee

“…The neural network is applied to establish a model based on the relationship between input parameters (spindle speed, feed rate, depth of cut, and diamond abrasive size) and output parameter (cracking area percentage). The neural network can predict individual crack in terms of input parameters, which provides faster and more automated model synthesis. …”
Get full text

Percutaneous Embolization of Congenital Portosystemic Venous Fistula in an Infant with Down Syndrome by Pattaraporn Tanya Chun, Terrence Chun, Matthew Files, Nghia Vo, Ryan M. McAdams

“…We describe a term male infant with Down syndrome with high output heart failure secondary to a congenital arterial to portal venous fistula that was diagnosed by Doppler ultrasound. …”
Get full text

Novel level shifter based physical unclonable function circuit design by Lijuan HAN, Lei QIAN, Enyi YAO, Xin LOU, Yuan CAO, Yanhua LIU

“…Level shifters are widely used in low-power, multi-threshold integrated circuit chips.A novel physical unclonable function (PUF) design based on cross-coupled level shifter was proposed.In this work, a single switching transistor was inserted in the level shifter, which was the only overhead per response bit to change the operation mode of the cross-coupled level shifter from differential to common.The signature of the PUF was extracted while in common mode, by exploiting the uncertainty of the output voltage due to the difference of the switching time of the two PMOS in the cross-coupled network.Simulated with a standard 65 nm CMOS process, the results show the proposed PUF can produce a uniqueness of 49.11% and a reliability of 96.09% with the power supply voltage ranged from 1.0 V to 1.5 V and 95.31% with the temperature ranged from -20 ℃ to 100 ℃.The energy per bit is only 0.72 pJ at a high throughput of 20 Mbit/s (1.2 V, 27 ℃).…”
Get full text