Performance analysis of covert wireless communication based on beam forming with noise uncertainty by Yuda LIN, Liang JIN, You ZHOU, Yangming LOU

“…In order to establish covert wireless communication in Rayleigh fading environment with noise uncertainty,a scheme of downlink covert wireless communication based on complex Gaussian random coding and beam forming was adopted,and more importantly,the performance of covert wireless communication was analysed.Firstly,the covert probability of communication was analyzed by using the hypothesis test theory.Secondly,the optimal detection threshold of the illegal detection party was given and proved,and the closed expressions of the average covert probability,connection interruption probability and covert throughput of the system were further obtained.Finally,by jointly designing the transmission power and target covert rate,the optimal goal of the maximum covert throughput of the system was achieved,and the corresponding algorithm based on step search was given.The simulation results show that the beam forming technology could provide some gain for covert wireless communication.Compared with the ideal case in which the legitimate receiver is not affected by the noise uncertainty,the covert throughput in non-ideal case is significantly reduced and almost not affected by the basic noise level of the environment.…”
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Design and Simulation of Cam Pressurized CVT by Hao Jianjun, Liu Yunyun, Lan Jiashui, Xiong Feng

“…Aiming at the problems of the current CVT actuated by hydraulic control system,such as high energy consumption,complicated control systems,speed ratio and transmission ability being limited by metal belt axial deflection,a new designed cam pressurized CVT hydraulic system is proposed,which is composed of cam automatic pressurized device and closed hydraulic system.The cam pressurized device automatically provides most of the clamping force,the closed hydraulic control system provides the auxiliary clamping force and changes the speed ratio.The new designed hydraulic control system with simple-structure can leave out expensive reversing values and reduce overflow loss,therefore it has advantages of less component parts,energy conservation,environmental protection and low cost.The structure design and working principle of the CVT system are introduced,and the simulation analysis is carried out by using the Matlab/Simulink software.The simulation results show that the cam pressurized CVT hydraulic control system has the significant advantages of fast dynamic response,stable performance and so on.…”
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L’utopie chez Houellebecq : interprétation des éléments dominants et du style d’écriture dans l’univers houellebecquien by Hua Hu

“…The study tries to take “Utopia” as a principle line to systematically analyze the themes, literary creation styles and other related elements in Houellebecq’s work from three aspects. …”
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Osoba i dokonania prof. Andrzeja Szczeklika. Perspektywa bioetyka by Wojciech Bołoz

“…His works also include three excellent interdisciplinary books that show the personality of the scientist, a system of thought, ideological affiliation, source of strength, and motivation. …”
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Existence of Wave Front Solutions of an Integral Differential Equation in Nonlinear Nonlocal Neuronal Network by Lijun Zhang, Linghai Zhang, Jie Yuan, C. M. Khalique

“…The main idea we apply here is to reduce the nonlinear integral-differential equation into a solvable differential equation and test whether the solution we get is really a wave front solution of the model equation.…”
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Activation and Genetic Modification of Human Monocyte-Derived Dendritic Cells using Attenuated Salmonella typhimurium by Agnieszka Michael, Justin John, Brendan Meyer, Hardev Pandha

“…We have examined two new strains of S. typhimurium and their impact on dendritic cell maturation (CD12-sifA/aroC mutant and WT05-ssaV/aroC, both in TML background). …”
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La ambigüedad de los afectos en la ética de Spinoza by Inmaculada Hoyos Sánchez

“…El propósito de este artículo es mostrar la ambigüedad que caracteriza a la definición de los afectos que Spinoza presenta al principio del libro III de su Ética en lo que respecta a la locución adverbial et simul que aparece en ella. …”
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Early Childhood Education Reform in Pakistan: Challenges, Innovations, and Future Prospects by Artipah Artipah, Zohaib Hassan Sain, Asfahani Asfahani, Sa'diyah Sa'diyah

“… This research investigates the landscape of Early Childhood Education (ECCE) reforms in Pakistan, aiming to explore the sector's challenges, innovations, and prospects. A systematic literature review identified key challenges such as limited access to quality education and a shortage of trained educators, encouraging the exploration of innovative solutions, including technology integration and community-based centers. …”
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Le Moyen Âge, une époque sans État ? Construire le passé au présent by Andrey Grunin

“…L’existence de l’État médiéval est sujet à débat. Les temps prémodernes ne semblent disposer ni du mot ni de l’organisation matérielle de l’État dans notre compréhension actuelle. …”
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护理程序法对幼儿口腔健康促进的作用

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Los conceptos de tour(ismus) y reise en los fraseologismos alemanes y su traducción al español. by Alfonso Corbacho Sánchez

“…Como se podrá comprobar, los conceptos de Tour(ismus) y Reise muestran en numerosas unidades fraseológicas significados muy diferentes, a pesar de que cada una de ellas trata de estar relacionada con los términos mencionados. …”
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Left Main Coronary Artery Hypoplasia in Elderly by Selma Kenar Tiryakioglu, Hakan Ozkan, Hakan Bahadir, Osman Tiryakioglu

“…Congenital anomalies of the coronary artery causing coronary occlusive disease may be of many different types. A 67-year-old woman with no coronary risk factors was referred for coronary angiography with few months’ history of angina. …”
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Komparasi Tampilan dan Hasil Lima Varietas Jagung Manis (Zea mays saccharata, Sturt) di Kota Pekanbaru by Surtinah Surtinah, Neng Susi, Sri Utami Lestari

“…The method used is an experimental method to design treatment 5 varieties of sweet corn that is v1 = Sugar 75; v2 = Star Asia; v3 = Bonanza; v4 = Sagita sweet; v5 = Master sweet, and using a completely randomized design environment and repeated 6 times. …”
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Rejection of Organic Micropollutants by Clean and Fouled Nanofiltration Membranes by Lifang Zhu

“…The observed enhancement in the rejection of organic micropollutants by fouled NF270 membranes was attributed to pore blocking, which was a dominating fouling mechanism for loose NF membranes. …”
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Druhý, tzv. Gibišův transport československých legií z Ruska do Francie (1917-1918) by Tomáš Jiránek

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NEW ACT ON THEATERS DE LEGE LATA AND DE LEGE FERENDA by Dragan Zlatović

“…In particular, necessary changes were detected in the regulation of the composition and powers of theater councils, which are re-implemented in the Act on Theaters from 2023 as a link between the founder and the theater itself, with such management functions that continue to enable political influence on the personnel policy, management and operation of the theater, not only in business, but also indirectly in the artistic field.…”
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EFFECT OF BIOFERTILIZERS ON SOYBEAN GROWTH AND THEIR KEY PEST DENSITIES AS ALTERNATIVE APPROACH TOWARD SUSTAINABLE AGRICULTURE PRODUCTION by Alaa R. Fadel, Feryal H. Sadiq, Hassan M. Lilo

“…Chemical fertilizers are widely used to increase production in quantity and quality. As a result of the harmful effects caused by chemical fertilizers, it become necessary to find alternative solutions as sustainable approach toward supply plant by elements needs such as biofertilizers. …”
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Approximation properties relative to continuous scale space for hybrid discretisations of Gaussian derivative operators by Tony Lindeberg

“…The presented results are intended as a guide, when designing as well as interpreting the experimental results of scale-space algorithms that operate at very fine scale levels.…”
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Utilization of Carbonized Wood from Tropical Fast-Growing Trees for Functional Materials by Joko Sulistyo, Toshimitsu Hata, Sri Nugroho Marsoem

“…The development of functional materials for engineering applications utilizing carbonized wood from fast-growing trees species have to consider the microstructure and pore structure in carbonized wood which has a relationship to the carbonization conditions. …”
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Forage Grasses for Florida's Organic Soils by Joao Vendramini, Philipe Moriel, Lindsey Wiggins

“…In the past, the combination of potentially high forage yields on the fertile organic soils and the long grazing season were the basis for one of the highest concentrations of beef cattle and a viable beef cattle industry in Florida. Presently most livestock operations on EAA are small noncommercial herds on improved and unimproved pastures comprising less than 1% of the EAA. …”
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