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Topic Review
European Air Pollution Restrictions on Internal Combustion Engines
European Union (EU) legislators have laid out limits for emissions to air, grouping combustion engines by application, and then by power, displacement, engine type (spark ignited (SI) or compression-ignition (CI)), operating conditions and site, as well as the type of fuel used. The basic groups are cars and light trucks, heavy-duty truck and bus engines, and non-road engines. The regulations concerning road vehicles are more stringent than those for engines used in non-road machinery. EU law is considerably more liberal for small engine non-road equipment, which is defined as featuring engines below 56 kW. Some of the main reasons for this include the size and weight of those engines.
  • 638
  • 14 Nov 2022
Topic Review
TMCrack-Net
The detection of crack information is very important in mural conservation. In practice, the number of ancient murals is scarce, and the difficulty of collecting digital information about murals leads to minimal data being collected. Crack information appears in pictures of paintings, which resembles painting traces and is easy to misidentify. However, the current mainstream semantic segmentation networks directly use the features of the backbone network for prediction, which do not fully use the features at different scales and ignore the differences between the decoder and encoder features. A new U-shaped convolutional neural network with feature pyramids and a transformer called TMCrack-net is proposed.
  • 512
  • 14 Nov 2022
Topic Review
Computer Vision and Convolutional Neural Networks
Computer vision (CV) combined with a deep convolutional neural network (CNN) has emerged as a reliable analytical method to effectively characterize and quantify high-throughput phenotyping of different grain crops, including rice, wheat, corn, and soybean. In addition to the ability to rapidly obtain information on plant organs and abiotic stresses, and the ability to segment crops from weeds, such techniques have been used to detect pests and plant diseases and to identify grain varieties. The development of corresponding imaging systems to assess the phenotypic parameters, yield, and quality of crop plants will increase the confidence of stakeholders in grain crop cultivation, thereby bringing technical and economic benefits to advanced agriculture.
  • 1.6K
  • 14 Nov 2022
Topic Review
Underlying Factors and Strategies for Organizational BIM Capabilities
Building information modeling (BIM) has a significant role in the architecture, engineering, construction, and operation (AECO) industries. Most BIM benefits have not been grasped due to the lack of organizational BIM capabilities (OBIMCs). Accordingly, organizations must develop intuitive strategies to support BIM implementation and to fulfill the promised benefits.
  • 768
  • 14 Nov 2022
Topic Review
Biomimetic Olfactory and Gustatory Biosensors
The biomimetic olfactory and gustatory biosensing devices have broad applications in many fields, such as industry, security, and biomedicine. The development of these biosensors was inspired by the organization of biological olfactory and gustatory systems.
  • 507
  • 14 Nov 2022
Topic Review
Osa (Handgun)
The ПБ-4 «ОСА» (EN:PB-4 Osa, Russian for "wasp"), is a family of Russian non-lethal pistols that can be also used as flare gun, flashbang gun, or starting pistol. The system consists of the pistol (2-4 cartridges, laser target pointer, electronic ignition capsule), and various ammunition types. Osa was developed in the 1990s by engineer-constructor and weapon designer G.A. Bideev (Г.А. Бидеев). It was designed and is manufactured by the state-owned organizations Federal Center for Research and Manufacturing and The Institute for Science and Research in the Applied Chemistry. The pistol is available in the civilian market.
  • 659
  • 14 Nov 2022
Topic Review
Degradation of Concrete Structures in Nuclear Power Plants
Concrete, an integral part of a nuclear power plant (NPP), experiences degradation during their operational lifetime of the plant. The damage mechanism could be chemical or physical. The major causes of chemical degradation include alkali–aggregate reactions, leaching, sulfate attack, bases and acids attack, and carbonation. Physical degradation is a consequence of both environmental and mechanical factors combined. These factors are mainly elevated temperature, radiation, abrasion and erosion, salt crystallization, freeze–thaw distortions, fatigue and vibration. Additionally, steel reinforcements, prestressing steels, liner plates, and structural steel also experience degradation. 
  • 587
  • 14 Nov 2022
Topic Review
Bloch Wave – MoM Method
Bloch wave – MoM is a first principles technique for determining the photonic band structure of triply-periodic electromagnetic media such as photonic crystals. It is based on the 3-dimensional spectral domain method, specialized to triply-periodic media. This technique uses the method of moments (MoM) in combination with a Bloch wave expansion of the electromagnetic field to yield a matrix eigenvalue equation for the propagation bands. The eigenvalue is the frequency (for a given propagation constant) and the eigenvector is the set of current amplitudes on the surface of the scatterers. Bloch wave - MoM is similar in principle to the plane wave expansion method, but since it additionally employs the method of moments to produce a surface integral equation, it is significantly more efficient both in terms of the number of unknowns and the number of plane waves needed for good convergence. Bloch wave - MoM is the extension to 3 dimensions of the spectral domain MoM method commonly used for analyzing 2D periodic structures such as frequency selective surfaces (FSS). In both cases, the field is expanded as a set of eigenfunction modes (either a Bloch wave in 3D or a discrete plane wave - aka Floquet mode - spectrum in 2D), and an integral equation is enforced on the surface of the scatterers in each unit cell. In the FSS case, the unit cell is 2-dimensional and in the photonic crystal case, the unit cell is 3-dimensional.
  • 262
  • 13 Nov 2022
Biography
Ali T. Alouani
The University of Tennessee Knoxville, USA Ph.D. Degree in Electrical & Computer Engineering. (Dec, 1986) Thesis title: Implementation of Nonlinear Centralized Estimators in a Distributed Fashion. Research Areas: Autonomous Systems, Sensor Data Fusion, Medical Diagnosis Support Systems, EV Battery Safety, Smart Grid Monitoring Ecole Nationale d’Ingénieurs de Tunis, Tunisia, Ingénieur Prin
  • 799
  • 11 Nov 2022
Topic Review
Customs Broking
Customs brokerage. Custom brokers may be employed by or affiliated with freight forwarders, independent businesses, or shipping lines, importers, exporters, trade authorities, and customs brokerage firms.
  • 419
  • 11 Nov 2022
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