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Updated time: 05 Aug 2021
Definition: The bullwhip effect results from inefficiencies in the supply chain; in perishable products, the inefficiencies are quality in the supply chain and product waste. Update the demand, the level of deterioration of the product, and the number of intermediaries is the causes of the bullwhip effect most investigated.
Updated time: 16 Jun 2021
Definition: Compact Muon Solenoid (CMS) detector and the methodology of modelling the heterogeneous CMS magnetic system for describing the magnetic flux of the CMS superconducting solenoid enclosed in a steel flux-return yoke.
Entry Collection : Computation of Electromagnetic Fields
Updated time: 12 Apr 2021
Abstract: Micromachines (ISSN 2072-666X) first launched in 2010，initially published as a quarterly journal，and received 1st Impact Factor in July 2014. In 2015，Micromachines was transferred to a monthly journal. Micromachines (ISSN 2072-666X) is an international, peer-reviewed, open access journal, which provides an advanced forum for studies on micro/nano-scaled structures, materials, devices, systems as well as related micro- and nanotechnology from fundamental research to applications. The journal publishes reviews, original research articles, and communications in this field. Our aim is to encourage scientists to publish their theoretical and experimental results in as much detail as possible. Therefore, there is no restriction on the length of the papers or the number of electronic supplementary files. Full details on experiments, materials and methods must be provided for a research article so that the results can be reproduced. Micromachines is covered by the Science Citation Index Expanded (Web of Science), Ei Compendex, Scopus, and PubMed, and its 2019 impact factor is 2.523.
Updated time: 05 Jul 2021
Definition: The contemporary displacement measurement systems used in geotechnical laboratories during the determination of soil precise mechanical parameters, (e.g., the shear modules G: initial and in the range of small and very small strains) are not universal and their use depends on the type of soil (cohesive, non-cohesive), its condition (loose or dense, stiff or very soft), and its characteristic properties (e.g., organic soil, swelling soil).
Entry Collection : Structures for Engineering and Architecture
Updated time: 01 Apr 2021
Definition: An NCS consists of control loops joined through communication networks in which both the control signal and the feedback signal are exchanged between the system and the controller.
Updated time: 22 Sep 2021
Abstract: The standard Bluetooth Low-Energy mesh networks assume the use of flooding for multihop communications. The flooding approach causes network overheads and delays due to continuous message broadcasting in the absence of a routing mechanism. Among the routing protocols, AODV is one of the most popular and robust routing protocol for wireless ad hoc networks. In this paper, we optimized the AODV protocol for Bluetooth Low-Energy communication to make it more efficient in comparison to the mesh protocol. With the proposed protocol (Optimized AODV (O-AODV)), we were able to achieve lower overheads, end-to-end delay, and average per-hop one-way delay in comparison to the BLE mesh (flooding) protocol and AODV protocol for all three scenarios (linear topology with ten nodes, multipath topology with six and ten nodes). In addition, the proposed protocol exhibited practically constant route requests and route reply setup times. Furthermore, the proposed protocol demonstrated a better Packet Delivery Ratio (PDR) for O-AODV (84%) in comparison to AODV (71%), but lower than the PDR of the mesh (flooding) protocol with 93%.
Updated time: 11 Jun 2021
Definition: A smart helmet is a wearable device that has attracted attention in various fields, especially in applied sciences,
Updated time: 25 Apr 2021
Definition: Wearable sensors provide a promising opportunity to quantitatively assess the individual functional capacities of an athlete with disability in an ecological environment. The available evidence for the application of wearable sensors in sport for athletes with disabilities is mainly focused on performance assessment and characterization for training optimization, mirroring classic aspects of sports biomechanics in non-disabled athletes. Applications specific to sports for people with disability, such as athlete classification and injury prevention, are limited but indicate possible directions for further development. Finally, since the equipment is frequently of particular importance in sports for persons with disability, the literature indicates that wearable systems are promising to support the customization of equipment to meet the athlete's individual needs.