Results 51 to 60 of about 553,266 (266)

Internalizing negative externalities in vehicle routing problems through green taxes and green tolls [PDF]

open access: yes, 2019
Road freight transportation includes various internal and external costs that need to be accounted for in the construction of efficient routing plans. Typically, the resulting optimization problem is formulated as a vehicle routing problem in any of its ...
Faulìn, Javier   +1 more
core  

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

open access: yesFEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka   +11 more
wiley   +1 more source

A Heuristic Angular Clustering Framework for Secured Statistical Data Aggregation in Sensor Networks

open access: yesSensors, 2020
Clustering in wireless sensor networks plays a vital role in solving energy and scalability issues. Although multiple deployment structures and cluster shapes have been implemented, they sometimes fail to produce the expected outcomes owing to different ...
Lalitha Krishnasamy   +5 more
doaj   +1 more source

Cross-docking cargo delivery routing for guaranteed minimum period

open access: yesTransport Technologies, 2022
The article is devoted to the problem of effective use of cross-docking as a technology of cargo delivery with increased time requirements, which allows to resolve the contradictions of guaranteed delivery time ensuring and the efficiency of the existing
Myroslav Oliskevych   +2 more
doaj   +1 more source

Route masters [PDF]

open access: yesCurrent Biology, 2007
A new study reveals that turtles stick closely to previous tracks between breeding and foraging sites, offering new potential to protect these animals at sea. Nigel Williams reports.
openaire   +2 more sources

Cell wall target fragment discovery using a low‐cost, minimal fragment library

open access: yesFEBS Letters, EarlyView.
LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan   +5 more
wiley   +1 more source

An Adaptive Topology Management Scheme to Maintain Network Connectivity in Wireless Sensor Networks

open access: yesSensors, 2022
The roots of Wireless Sensor Networks (WSNs) are tracked back to US military developments, and, currently, WSNs have paved their way into a vast domain of civil applications, especially environmental, critical infrastructure, habitat monitoring, etc.
Muhammad Zia Ul Haq   +6 more
doaj   +1 more source

An improved largest gap routing heuristic for order picking [PDF]

open access: yes, 2012
The largest-gap policy is a routing heuristic for order picking systems. In this paper we develop an improved largest gap routing method. A simulation approach is used to demonstrate the superior performance of the improved largest gap routing over ...
Limère, Veronique   +2 more
core   +1 more source

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

open access: yesFEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee   +3 more
wiley   +1 more source

A Multi Period Routing and Scheduling optimization Model for Home health Care Problem [PDF]

open access: yesMuṭāli̒āt-i Mudīriyyat-i Ṣan̒atī, 2018
Home health care services have a key importance in modern societies. Most organizations working in this area in Iran use the traditional procedure to plan and manage medical staff and determine the arrangement of visiting patients.
Seyed Mohammad Taghi Fatemi Ghomi   +2 more
doaj   +1 more source

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