Results 61 to 70 of about 4,177,989 (299)

Doubling the Accuracy of Indoor Positioning: Frequency Diversity

Sensors, 2020
Determination of indoor position based on fine time measurement (FTM) of the round trip time (RTT) of a signal between an initiator (smartphone) and a responder (Wi-Fi access point) enables a number of applications.
Berthold K.P. Horn
doaj   +1 more source

Signal space diversity for spatial multiplexing [PDF]

2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, 2008
When channel state information is available at the transmitter, we can diagonalize a MIMO channel with SVD transceivers. However, outage of the weaker eigenchannels limits the performance of such a transceiver. In the current work, we propose and analytically characterize co-ordinate interleaving of multi-dimensional symbols over sets of eigenchannels.
Gajanana Krishna, Kothapalli V. Srinivas, Srikrishna Bhashyam, Ravinder David Koilpillai   +3 more
openaire   +2 more sources

Conserved binding mode but diverse interfaces of MreC‐PBP2 interactions

FEBS Letters, EarlyView.
The crystal structure of abMreC reveals a conserved two β‐barrel architecture and provides structural insights into its role within the bacterial elongasome. The abMreC–abPBP2 complex model identifies the molecular basis of MreC‐mediated PBP2 recognition, contributing to the regulation of peptidoglycan synthesis.
Hyunseok Jang, Hyo Been Jin, Chang Min Kim, So Yeon Lee, Hyun Ho Park   +4 more
wiley   +1 more source

Presence of a loner strain maintains cooperation and diversity in well-mixed bacterial communities [PDF]

, 2016
Cooperation and diversity abound in nature despite cooperators risking exploitation from defectors and superior competitors displacing weaker ones. Understanding the persistence of cooperation and diversity is therefore a major problem for evolutionary ...
Inglis, R. Fredrik, Kümmerli, Rolf, Biernaskie, Jay M., Inglis, R Fredrik, Inglis, Robert, Biernaskie, Jay, Gardner, Andy   +6 more
core   +1 more source

UAV-Assisted MOSI/SOMI MIMO-FSO Relay for Resilient Transport Communication Links

Automation
Reliable communication infrastructure is a fundamental component of Intelligent Transport Systems (ITSs), particularly in scenarios involving maritime corridors and emergency traffic management.
Ho Van Cuu, Leminh Thien Huynh, Žarko Koboević   +2 more
doaj   +1 more source

Array Gain Analysis in Molecular MIMO Communications

IEEE Access, 2018
In this paper, spatial transmission techniques in the area of multiple-input multipleoutput (MIMO) diffusion-based molecular communications (DBMC) are investigated.
Martin Damrath, H. Birkan Yilmaz, Chan-Byoung Chae, Peter Adam Hoeher   +3 more
doaj   +1 more source

Spatial scale changes the relationship between beta diversity, species richness and latitude [PDF]

Royal Society Open Science, 2018
The relationship between β-diversity and latitude still remains to be a core question in ecology because of the lack of consensus between studies. One hypothesis for the lack of consensus between studies is that spatial scale changes the relationship ...
Rachakonda Sreekar, Masatoshi Katabuchi, Akihiro Nakamura, Richard T. Corlett, J. W. Ferry Slik, Christine Fletcher, Fangliang He, George D. Weiblen, Guochun Shen, Han Xu, I-Fang Sun, Ke Cao, Keping Ma, Li-Wan Chang, Min Cao, Mingxi Jiang, I. A. U. Nimal Gunatilleke, Perry Ong, Sandra Yap, C. V. Savitri Gunatilleke, Vojtech Novotny, Warren Y. Brockelman, Wusheng Xiang, Xiangcheng Mi, Xiankun Li, Xihua Wang, Xiujuan Qiao, Yide Li, Sylvester Tan, Richard Condit, Rhett D. Harrison, Lian Pin Koh   +31 more
doaj   +1 more source

Disturbance and diversity at two spatial scales [PDF]

Oecologia, 2011
The spatial scale of disturbance is a factor potentially influencing the relationship between disturbance and diversity. There has been discussion on whether disturbances that affect local communities and create a mosaic of patches in different successional stages have the same effect on diversity as regional disturbances that affect the whole ...
Limberger, Romana, Wickham, Stephen A.
openaire   +2 more sources

Microbiome‐blood–brain barrier interactions in aging — mechanisms and therapeutic potential

FEBS Letters, EarlyView.
Aging reshapes the gut microbiome (↓SCFA‐producing commensals; ↑pro‐inflammatory outputs), shifting circulating metabolites (↓SCFAs; ↑LPS, ↑TMAO, ↑PAA) that act at the BBB to increase nonspecific transcytosis, alter transport, and promote astrocyte reactivity, heightening brain vulnerability.
Daniel Cuervo‐Zanatta, Hari Baskar Balasubramanian, Amir Pasokh, Marietta Zille   +3 more
wiley   +1 more source

SPATIAL DIVERSITY OF POVERTY IN POLAND

Acta Universitatis Lodziensis. Folia Oeconomica, 2014
Badania nad problemem ubóstwa mają wieloletnią tradycję. W Polsce problematyka ta nabrała szczególnego znaczenia wraz z rozpoczęciem transformacji ustrojowej. Dodatkowo przystąpienie Polski do Unii Europejskiej, a zwłaszcza konieczność wdrożenia unijnej Strategii Spójności Społecznej, narzuciło nowe wymagania w zakresie badania tego zjawiska.
Ulman, Paweł, Wałęga, Agnieszka
openaire   +2 more sources