Results 31 to 40 of about 1,445,204 (316)

Levels of accumulation of heavy metals and activity of radionuclides in narrow-clawed crayfish (Astacus leptodactylus Eschscholtz, 1823) of the Kamianske and Zaporizhzhia (Dnipro) reservoirs

open access: yesRibogospodarsʹka Nauka Ukraïni, 2023
Purpose. To determine the content of heavy metals as well as natural and artificial radionuclides in muscle tissue and carapaces of narrow-clawed crayfish Astacus leptodactylus of the Kamianske and Zaporizhzhia (Dnipro) reservoirs. Methodology.
P. Korzhenevska   +3 more
doaj   +1 more source

Analysis of DoS Attacks at MAC Layer in Mobile Adhoc Networks [PDF]

open access: yes, 2015
—Wireless network security has received tremendous attention due to the vulnerabilities exposed in the open communication medium. The most common wireless Medium Access Control (MAC) protocol is IEEE 802.11, which assumes all the nodes in the network are
Alocious, Chaminda   +2 more
core   +2 more sources

Ecological monitoring of the water bodies of the Ural-Caspian basin

open access: yesCentral Asian Journal of Water Research, 2021
The article presents the results of investigating heavy metal concentrations in water bodies of the Ural-Caspian Basin. Heavy metal content in water, bottom sediment (silt) and biota condition constitute the most objective and reliable indicators of ...
G. Tulemisova   +4 more
doaj   +1 more source

Effects of Mindfulness-Acceptance-Commitment (MAC) on Sport-Specific Dispositional Mindfulness, Emotion Regulation, and Self-Rated Athletic Performance in a Multiple-Sport Population: an RCT Study

open access: yesMindfulness, 2019
ObjectivesThe aim of the study was to examine mediating effects of emotion regulation and sport-specific dispositional mindfulness on self-rated athletic training performance, following the Mindfulness-Acceptance-Commitment (MAC) intervention, compared ...
Torbjorn Josefsson   +6 more
semanticscholar   +1 more source

Comparison of CSMA based MAC protocols of wireless sensor networks

open access: yes, 2012
Energy conservation has been an important area of interest in Wireless Sensor networks (WSNs). Medium Access Control (MAC) protocols play an important role in energy conservation.
Biswas, Bhaskar, singh, Himanshu
core   +1 more source

A Priority-Based Multichannel Mac to Support the Non-Safety Applications in SCH Interval at RSU in V2I Communication

open access: yesTransport and Telecommunication, 2018
The transmission of safety applications in VANET is clearly the top concern. However, the non-safety applications, which improve the quality of experience, as well as the efficiency of the traffic, also need to be paid more attention.
Le Duc Tran   +4 more
doaj   +1 more source

Predictive ecological niche model for Cinnamomum parthenoxylon (Jack) Meisn. (Lauraceae) from Last Glacial Maximum to future in Vietnam [PDF]

open access: yesBiodiversity Data Journal
Cinnamomum parthenoxylon (Jack) Meisn. is a tree in genus Cinnamomum that has been facing global threats due to forest degradation and habitat fragmentation. Many recent studies aim to describe habitats and assess population and species genetic diversity
Mai-Phuong Pham   +3 more
doaj   +3 more sources

Millimeter Wave Cellular Networks: A MAC Layer Perspective [PDF]

open access: yesIEEE Transactions on Communications, 2015
The millimeter-wave (mmWave) frequency band is seen as a key enabler of multigigabit wireless access in future cellular networks. In order to overcome the propagation challenges, mmWave systems use a large number of antenna elements both at the base ...
H. S. Ghadikolaei   +4 more
semanticscholar   +1 more source

CR-MAC: Cooperative Relaying MAC Protocol for VANETs

open access: yes2019 Scientific Meeting on Electrical-Electronics & Biomedical Engineering and Computer Science (EBBT), 2019
In this paper, a novel cooperative relaying medium access control (CR-MAC) protocol is proposed for vehicular ad hoc networks (VANETs). Three data transmission modes have been offered to increase the throughput which are direct transmission (DT), cooperative relaying (CR) and multi-hop relaying (MHR).
Karabulut, Muhammet Ali   +2 more
openaire   +3 more sources

An multi-BSS multi-user full duplex MAC protocol based on AP cooperation for the next generation WLAN

open access: yesXibei Gongye Daxue Xuebao, 2021
Aiming at the problems of low efficiency of buffer information collection and sharp drop of system throughput caused by the aggravation of conflicts in the multi basic service set (BSS) high density deployment overlap coverage scenario of next generation

doaj   +1 more source

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