Instantaneous Impact Point Guidance with Coast Arcs for Solid Rockets by Shengwei Jia, Fugui Li, Mingbo Tong

“…This paper proposed an analytical iterative guidance method with the desired instantaneous impact point constraint for solid rockets in “burn-coast-burn” trajectory mode. Solid rocket motors expect to remove the thrust termination mechanism to increase the structural strength and launch reliability, which induce new difficulties and challenges to the guidance problems. …”
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Recent Levels of Technetium-99 in Seawater at the West Coast of Svalbard by Sebastian Gerland, Bjørn Lind, Mark Dowdall, Anne Kathrine Kolstad

“…Seawater from the western coast of Svalbard was sampled in the spring and summer of 2000 to determine levels of technetium-99 (99Tc), a conservative-behaving, manmade radionuclide originating from European nuclear reprocessing plants. …”
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Perception of students' motivations in gymnastic activities in physical education classes by Carla Vieira, Tatiana Rocha, António Manuel Azevedo

“…An adapted version of the questionnaire by Silva and Ferro (2016) was used for data collection, as well as version 29 of the IBM Statistical Package for the Social Sciences (SPSS) for data analysis. Results: Age did not significantly influenced the enjoyment of gymnastic activities; a significant association was noted between gender and the enjoyment of the practice, as well as between gender and the perception of gymnastics as a feminine modality; there was a significant association between the appreciation of gymnastics in the school context and its practice outside of it, as well as with the perceived difficulty in its execution. …”
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On Some Integral Operators for Certain Classes of p-Valent Functions by Lokesh Vijayvargy, Pranay Goswami, Bushra Malik

“…We study some generalized integral operators for the classes of p-valent functions with bounded radius and boundary rotation. …”
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A Note on the Square Roots of a Class of Circulant Matrices by Ying Zhang, Huisheng Zhang, Guoyan Chen

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A New Class of Analytic Functions Associated with Sălăgean Operator by Muhammad Arif, Khurshid Ahmad, Jin-Lin Liu, Janusz Sokół

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Geotouristic Coastal Itinerary in the South Coast of Paraíba (Northeast of Brazil) by Luciano Pereira, Arilde Alves

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Cohesive fracture in composite systems: experimental setup and first results by Valentino Paolo Berardi, Michele Perrella, Gabriele Cricrì

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The Scale Effect of Coarse-Grained Materials by Triaxial Test Simulation by Xiaotao Ai, Guangjin Wang, Xiangyun Kong, Bo Cui, Bin Hu, Hongling Ma

“…As the confining pressure increased, the scale effect of coarse-grained materials would be magnified. If particle breakage and migration were assumed to be neglected, the internal friction angle φ and dmax would be roughly proportional, the cohesive force c fluctuated with the increase of dmax, and the empirical relations between dmax and c and φ were established, respectively, which provides a reference for estimating the actual shear strength parameters of coarse-grained materials on-site. …”
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A Class of New Metrics for n-Dimensional Unit Hypercube by Guoxiang Lu

“…We study the metric on the n-dimensional unit hypercube. We introduce a class of new metrics for the space, which is information theoretically motivated and has close relation to Jensen-Shannon divergence. …”
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The historical roots of post-apartheid intra-working-class racism by Tlhabane Mokhine ‘Dan’ Motaung

“…This has been exacerbated by poor economic performance based on a neo-liberal framework, the social visibility of the often-self-assertive emerging Black middle class resulting from government affirmative policies, and the relative impoverishment of the white working class as they begin to face the cut and thrust of labour market with no preferential state cover. …”
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Preliminary diagnostics of mathematical achievements of 4th class pupils by Sigitas Balčiūnas, Danutė Kiseliova, Arkadijus Kiseliovas

“… In the article is presented an information about experimental measurement of 4 the class pupils' mathematical knowledge and skills. …”
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Middle Paleolithic surface finds on the northern coast of the Taganrog Bay by Kolesnik A.V., Danilchenko A.Yu., Zorov Yu.N., Titov V.V., Gavrilov K.N.

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The Asymptotic Behavior for a Class of Impulsive Delay Differential Equations by Zhichun Yang

“…This paper is concerned with asymptotical behavior for a class of impulsive delay differential equations. …”
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Investigating Students’ Academic Self-Efficacy in Play Performance Class by Thomas Wahyu Prabowo Mukti, Veronica Triprihatmini

“… Play Performance class at the English Language Education Study Program of Sanata Dharma University is designed to introduce students to fundamental concepts of drama and elaborate underlying principles of drama performance that come into play. …”
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Defect groups of class S $$ \mathcal{S} $$ theories from the Coulomb branch by Elias Riedel Gårding

“…Abstract We study the global forms of class S A N − 1 $$ \mathcal{S}\left[{A}_{N-1}\right] $$ 4d N $$ \mathcal{N} $$ = 2 theories by deriving their defect groups (charges of line operators up to screening by local operators) from Coulomb branch data. …”
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A Network Traffic Classification Method for Class-Imbalanced Data by Xiaohui Guan, Yaguan Qian

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On a Class of Anisotropic Nonlinear Elliptic Equations with Variable Exponent by Guoqing Zhang, Hongtao Zhang

“…Based on truncation technique and priori estimates, we prove the existence and uniqueness of weak solution for a class of anisotropic nonlinear elliptic equations with variable exponent p(x)→ growth. …”
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ON EUROPEAN UNION ECONOMIC GROWTH: IS COHESION POLICY STILL RELEVANT? by Cătălin Marian COSTACHE, Marcel Ioan BOLOȘ

Subjects: “…cohesion policy…”
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Lagrangian Stability of a Class of Second-Order Periodic Systems by Shunjun Jiang, Fang Fang

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