Performance of MMSE Beamforming with Time and Spatial Coordinate Interleaving

Author(s):  
Mustafa Anil Resat ◽  
Serdar Ozyurt
2020 ◽  
Vol 2020 (12) ◽  
Author(s):  
Yoonbai Kim ◽  
O-Kab Kwon ◽  
D. D. Tolla

Abstract We construct the 4-dimensional $$ \mathcal{N}=\frac{1}{2} $$ N = 1 2 and $$ \mathcal{N} $$ N = 1 inhomogeneously mass-deformed super Yang-Mills theories from the $$ \mathcal{N} $$ N = 1* and $$ \mathcal{N} $$ N = 2* theories, respectively, and analyse their supersymmetric vacua. The inhomogeneity is attributed to the dependence of background fluxes in the type IIB supergravity on a single spatial coordinate. This gives rise to inhomogeneous mass functions in the $$ \mathcal{N} $$ N = 4 super Yang-Mills theory which describes the dynamics of D3-branes. The Killing spinor equations for those inhomogeneous theories lead to the supersymmetric vacuum equation and a boundary condition. We investigate two types of solutions in the $$ \mathcal{N}=\frac{1}{2} $$ N = 1 2 theory, corresponding to the cases of asymptotically constant mass functions and periodic mass functions. For the former case, the boundary condition gives a relation between the parameters of two possibly distinct vacua at the asymptotic boundaries. Brane interpretations for corresponding vacuum solutions in type IIB supergravity are also discussed. For the latter case, we obtain explicit forms of the periodic vacuum solutions.


2020 ◽  
Vol 34 ◽  
pp. 39-70
Author(s):  
Cristian Micu

"Shepherding on Argeș Valley – spatial coordinates This paper presents the essential elements that define the spatial coordinate characteristic of shepherding which is practised in the sub-Carpathian villages on the Argeș Valley, following the documentary attestations of the villages, the genesis and evolution of the village boundaries, the evolution of land ownership and the right to use lands (in condominium or individually). Also within the spatial coordinate, there are researched the traditional ways in which the potential of the rural land fund is highlighted, as a result of its geomorphological, pedological, climatic qualities, etc., the study taking into consideration all the areal types with pastoral potential, not only those on the administrative territory of the villages, but also those in the mountain area destined for summer grazing. If for the presentation of origins, attestations, borderline fixation of the villages from the studied areal, documents, monographic studies and other categories of specialized works have been used, for the understanding of the manner of pastoral, individual and especially collective exploitation of the land fund by the village communities, of valorizing the fodder qualities of the different types of surfaces, it was necessary to carry out field research in the three targeted villages: Albeștii de Argeș, Corbeni and Arefu, all in the Argeș County. The visit of sheepfolds from Lespezi, Lipitoarea, Ciocanu, Podeanu, Oticu, in the alpine hollow of the Făgăraș Mountains, were necessary both for studying some elements related to the spatial coordinate (sheepfold location, daily travel routes, travel routes from the village hearth to the mountains, etc.) as well as for conducting interviews, based on an elaborate questionnaire, interviews generating unique and extremely useful information also for researching the other coordinates of the pastoral system practiced in the area. Keywords: shepherding, Argeș Valley, spatial coordinate, pastoral system, field research "


2017 ◽  
Author(s):  
Andrew S. Alexander ◽  
Douglas A. Nitz

AbstractTraversal of a complicated route is often facilitated by considering it as a set of related sub-spaces. Such compartmentalization processes could occur within retrosplenial cortex, a structure whose neurons simultaneously encode position within routes and other spatial coordinate systems. Here, retrosplenial cortex neurons were recorded as rats traversed a track having recurrent structure at multiple scales. Consistent with a major role in compartmentalization of complex routes, individual RSC neurons exhibited periodic activation patterns that repeated across route segments having the same shape. Concurrently, a larger population of RSC neurons exhibited single-cycle periodicity over the full route, effectively defining a framework for encoding of sub-route positions relative to the whole. The same population simultaneously provides a novel metric for distance from each route position to all others. Together, the findings implicate retrosplenial cortex in the extraction of path sub-spaces, the encoding of their spatial relationships to each other, and path integration.


2019 ◽  
Vol 10 (12) ◽  
pp. 6160 ◽  
Author(s):  
Xuan Liu ◽  
Basil Hubbi ◽  
Xianlian Zhou

2017 ◽  
Vol 44 (3) ◽  
pp. 0304003 ◽  
Author(s):  
陈洪芳 Chen Hongfang ◽  
郑博文 Zheng Bowen ◽  
石照耀 Shi Zhaoyao ◽  
孙衍强 Sun Yanqiang ◽  
隆昌宇 Long Changyu ◽  
...  

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