Transmission characteristics of air-ground channel in aerial communication platform by Xiaobin FU, Baohui ZHENG

“…Satellite communication can solve the problem of global communication,at the same time,it follows the problems of difficult deploy and limited satellite resources.Aerial communication platform is consisted of aircraft with payload communication and not more than 10 km from ground.The platform communicating with ground nodes can solve the weakness of traditional satellite communication.The loss of air-to-ground channel was analyzed to model the air-to-ground wideband channel in Ku and Ka band.The consequence of theory and simulation demonstrates that the fading of the model has serious influence on transmission performance.In low elevation transmission,the value of K-factor is small because of multipath reception.Simulation results show that orthogonal frequency division multiplexing (OFDM) can be a good candidate for wideband communications to transmit payload data from aerial platform to ground station.…”
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Investigation Of Plasma Stability Of The Prototype Plasma Lens For Positron Matching by Hamann Niclas, Jones Harry, Loisch Gregor, Formela Manuel, Ludwig Kai, Osterhoff Jens, Moortgat-Pick Gudrid

“…The quest for novel technologies in the ever-evolving landscape of scientific exploration has led to the investigation of plasma lensing as a potential solution for optical matching devices for all kinds of positron sources. This research becomes increasingly significant as the need for higher event rate demands innovative concepts to increase positron yield and therefore luminosity. …”
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A Simple Approach to Distinguish Classic and Formaldehyde-Free Tannin Based Rigid Foams by ATR FT-IR by Gianluca Tondi, Martin Link, Chuan Wei Oo, Alexander Petutschnigg

“…The spectra of the formaldehyde-free TBRFs, indeed, present decreased band intensity related to the C–O stretching vibration of (i) the methylol groups and (ii) the furanic rings. …”
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Correlation between Electrochemical Impedance Spectroscopy and Structural Properties of Amorphous Tunisian Metanacrite Synthetic Material by Nouha Jaafar, Hafsia Ben Rhaiem, Abdessalem Ben Haj Amara

“…The structure of the amorphous synthetic product was corroborated by X-ray diffraction (disappearing of nacrite peaks) and infrared spectroscopy (disappearing of Al–OH and water bands). The decomposition of the silicate framework was confirmed by transmission electron microscope (TEM). …”
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Dynamics Characteristic Analysis of Spur Gear Pairs based on Tooth Surface Friction by Lu Fengxia, Wang Haofei, Zhu Rupeng, Bao Heyun, Jiang Huihui

“…A bending-torsional nonlinear dynamics model of the spur gear pair with 6-DOF is established and the dimensionless dynamics equations are derived.The tooth surface friction,time-varying stiffness,gear backlashes as well as gear mesh errors are considered in this model.Based on the location of the contact line,the mathematical expressions of the tooth surface friction and the friction torque are both derived.The effects of tooth surface friction on the dynamic behaviors of the system are studied.The results show that the tooth surface friction can increase the vibration of the system,and the effect is more obvious on the vibration in the perpendicular direction to the meshing line.The degree of the chaotic motion of the system can be reduced by the tooth surface friction,and the bifurcation of the system becomes blurred at the high meshing frequency and chaotic motion appears earlier by the tooth surface friction.…”
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Applying Randomness Effectively Based on Random Forests for Classification Task of Datasets of Insufficient Information by Hyontai Sug

“…Hence, in this paper, some best classification accuracy based on clever application of random forests to predict the occurrence of cylinder bands in rotogravure printing is investigated. Since random forests could generate good results with an appropriate combination of parameters like the number of randomly selected attributes for each split and the number of trees in the forests, an effective data mining procedure considering the property of the target dataset by way of trial random forests is investigated. …”
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Research of the Meshing Drive Performance of New Arc Tooth Synchronous Belt based on RecurDyn by Guo Jianhua, Wei Lai, Cao Zhongliang, Jiang Hongyuan

“…Analysis on dynamic virtual prototypes shows that the tooth surfaces are loaded in the pinch-in and pinch-out areas,and belt deflection are the main reasons for the increase of the band load. And the load on the top of the belt tooth can effectively reduce the root load. …”
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Over-deterministic method: The influence of rounding numbers on the accuracy of the values of Williams expansion terms by V. Ru풞icka, L. Malkov�, S. Seitl

“…The results are presented taking into account a three-point bend single edge notched beam. Crack tip stress tensor components are expressed using the linear elastic fracture mechanics (LEFM) theory in this work, more precisely via its multi-parameter formulation, i.e. by Williams� power series (WPS). …”
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A Simplified Finite Element Approach for Modeling of Multilayer Plates by Taiyou Liu, Xinbo Ma, Pak Kin Wong, Jing Zhao, Zhengchao Xie, V. A. Melo Cristino

“…The simplified FE model of multilayer plates is proposed based on the equivalent bending stiffness by curve fitting of the reference value of the transverse response. …”
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Novel extended cyclic MUSIC algorithm based on uniform circular array by Guo-hong YOU, Tian-shuang QIU, Nan XIA, Ai-min SONG, Zhao-feng WANG

“…The proposed method could eliminate both noises and interferences in the same frequency band by exploiting simultaneously the information contained in both cyclic cor-relation matrix and cyclic conjugate correlation matrix of the extended array data vector. …”
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A freestanding ferroelectric thin film-based soft strain sensor by Jianping Guo, Zelong Wang, Guo Tian, Deyang Chen, Xingsen Gao, Xiaoyuan Zhou, Jiangyu Li, Ji-Yan Dai

“…In this work, we demonstrated a freestanding BiFeO3(BFO) thin film-based soft strain sensor and explored their flexoelectric coefficient and flexoelectric photovoltaic effect under different strain gradients. Under different bending scales, the photocurrent of the thin film exhibits a step-like variation, indicating that the sensor can measure strain gradient with high sensitivity. …”
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Maximizing Weed Control in Florida Citrus by Stephen H. Futch

“…When developing a weed management program, growers must consider: 1) weeds present, 2) stage of weed growth, 3) material selection, 4) amount of herbicide used, 5) application site, method and timing, and 6) herbicide band width. These items are discussed in detail in this document. …”
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Performance Comparison of Thin and Thick Film Microstrip Rejection Filters by M. M. Mandhare, S. A. Gangal, M. S. Setty, R. N. Karekar

“…A performance comparison of microstripline circuits using thin and thick film techniques has been studied, in which a Microstrip rejection filter, in the X-band of microwaves, is used as test circuit. A thick film technique is capable of giving good adhesive films with comparable d.c. sheet resistivity, but other parameters such as open area (porosity), particle size, and edge definition are inferior to thin-film microstrip filters. …”
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Miniaturized Wideband Aperture Coupled Microstrip Patch Antenna by Using Inverted U-Slot by Amandeep Singh, Surinder Singh

“…The proposed antenna design shows the measured return loss within acceptable range throughout the band (11.08 GHz–13.25 GHz) and maximum return loss is achieved with proper impedance matching. …”
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An Empirical Path-Loss Model for Wireless Channels in Indoor Short-Range Office Environment by Ye Wang, Wen-jun Lu, Hong-bo Zhu

“…A novel empirical path-loss model for wireless indoor short-range office environment at 4.3–7.3 GHz band is presented. The model is developed based on the experimental datum sampled in 30 office rooms in both line of sight (LOS) and non-LOS (NLOS) scenarios. …”
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L’héritage d’OK Computer : Influence de l’esthétique de Radiohead dans les productions de Leprous by Guillaume Deveney

“…We propose to examine this statement with a focus on progressive metal band Leprous, whose main composer, Einar Solberg, has always acknowledged the Oxford quintet’s influence – especially with OK Computer – on his own creations. …”
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A Multivariate Methodological Workflow for the Analysis of FTIR Chemical Mapping Applied on Historic Paint Stratigraphies by Giorgia Sciutto, Paolo Oliveri, Silvia Prati, Emilio Catelli, Irene Bonacini, Rocco Mazzeo

“…Successively, the brushing approach is applied, demonstrating its usefulness for a deep understanding of the relationships between the multivariate map and PC score space, as well as for the identification of the spectral bands mainly involved in the definition of each area localised within the score maps.…”
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Research on the enhancement technology based on the 5G wireless access and wireless backhaul integration by Feng BI

“…With the increasing requirements for communication services, it is necessary to focus on the factors such as the network coverage, the spectrum efficiency and the deployment and operation cost of operators when building 5G networks.The relay node introduced into the network can solve these problems.However, the relay node has self-interference.Although time-division multiplexing can avoid self-interference, it will increase the end-to-end service delay.In order to better solve these problems, the integrated enhancement technology researches were focused on the aspects of the resource multiplexing mode, the node timing, the guard band and the performance simulation verification between the wireless access and the wireless backhaul.The proposed integrated enhancement technology schemes not only avoid the self-interference of relay node, but also ensure the requirement for the service delay and user perceived throughput.…”
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Perovskite Thin Film Solar Cells Based on Inorganic Hole Conducting Materials by Pan-Pan Zhang, Zheng-Ji Zhou, Dong-Xing Kou, Si-Xin Wu

“…Inorganic p-type semiconductors are alternative HTMs due to their chemical stability, higher mobility, high transparency in the visible region, and applicable valence band (VB) energy level. This review analyzed the advantages, disadvantages, and development prospects of several popular inorganic HTMs in PSCs.…”
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Maximizing Weed Control in Florida Citrus by Stephen H. Futch

“…When developing a weed management program, growers must consider: 1) weeds present, 2) stage of weed growth, 3) material selection, 4) amount of herbicide used, 5) application site, method and timing, and 6) herbicide band width. These items are discussed in detail in this document. …”
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