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Videos are a powerful and expressive media that can capture and present information. As these videos cover many subjects / genres, it is critical task to segregate videos as per the needs or interest of the users which requires classifications. In this paper we present a model for video classification using embedded audio. Video classification is usually accompanied with video annotation which helps...
The paper presents front-end ASIC and measurements of low intensity fluorescence light using Silicon Photomultiplier. Front-end ASIC is dedicated device for amplifying and shaping signals from Silicon Photomultipliers. Measurement method is described. Fluorescence intensity for sodium fluoresceinate and resorufin in different concentrations is presented. Sensitivity limit is studied.
Plants are an integral part of our ecosystems. Their identification and classification has always been a matter of interest for the botanists as well as for the laymen. With around 3 million recognized plant species, only a tiny part of the plants is known. The leaves of the plant carry a lot of information about the plant species. These features are extracted and are used as a basis for an automated...
Rescue teams require exchanging tactical information to efficiently adapt their behavior to the particular disaster response scenario conditions. Broadcasting is the main technique used to disseminate messages throughout nodes in ad hoc networks. Ad hoc networks are one of the most appealing networks to be used in disaster response scenario due to their decentralized and self-organizing features....
Achieving soft switching in primary switches and reducing switching losses in the secondary ones make of the Asymmetrical Half Bridge (AHB) a suitable topology for many high-performance applications. Besides, the lack of dead times, except those needed for achieving soft switching, is a very interesting feature for self-driven synchronous rectification. On the other hand, it also has some disadvantages...
This paper presents a modelling, simulation and Implementation of topology of single-phase AC-DC active rectifier having power factor correction (PFC). This converter topology is evaluated on the basis of performance and its salient features are discussed to analyze its applicability. The technique not only helps to develop a deeper understanding of this converter but also to evaluate performance...
The Au-Sn binary phase diagram shows that there are two eutectic alloy compositions. The first one is at ∼30 at% Sn (Au-rich) with a melting point of 280°C and the second composition is at ∼94 at% Sn (Sn-rich) with an eutectic temperature at 217°C. This paper summarizes work that demonstrates that both eutectic alloys can be electrodeposited from electrolytes that are non-toxic and environmentally...
Compact polarimetry (compact-pol) architecture is a new hybrid mode for synthetic aperture radar (SAR) and is proposed for the future Canadian Radarsat Constellation Mission (RCM) and the future Japanese ALOS-2 mission. The Compact-pol mode transmits single circular polarization (left/right) and receives simultaneous coherent orthogonal linear polarizations. In this paper, we use Radarsat-2 C-band...
The behavior of an electron beam in plasma in the presence of external fields is investigated. The analysis of electron beam divergence dependence vs. concentration of ions in the interaction space is carried out. It is demonstrated that a longitudinal magnetic field and positively charged plasma in combination can be used for confinement of the electron beam.
Osteoarthritis (OA) is commonly seen among older populace and it is the most widespread of arthritic type. It is a degenerative joint disease where cartilage slowly wears away. Cartilage that covers the bone ensures the smooth movements of the joints. In knee OA, affected bones slide together due to degradation of cartilage, causing swell, pain and eventual loss of motion. Due to stress, knee joints...
Industrial process measurement and control systems are used in many industrial sectors in order to achieve production improvement, process optimization and accuracy of measurements. The increasing tendency in the construction of photovoltaic (PV) parks suggests the use of PLC and SCADA systems for the efficient operation. This paper proposes an intelligent automation system for supervising the performance...
The increasing demand of an intermediate storage of electrical energy in battery systems, in particular due to the use of renewable energy, has resulted in the need of more intelligent power supply systems. Bidirectional DC/DC power converters with galvanic isolation and efficient and low harmonic distortion AC/DC conversion to connect the mains line to the load are usually required in multiple applications...
In this paper a new triode circuit with virtual cathode was investigated. Such device has additional cathode grid and allows increasing an anode mutual conductance up to 100 mA/V.
Data are presented demonstrating, to our knowledge, the first monolithic chip integrating a semiconductor laser with a spontaneous light emitting diode optical pump that can also act as a heat pump. The light emitting diode operates in the voltage bias regime needed to generate a thermoelectrophotonic heat absorption. Under ideal operation the light emitting diode can efficiently optically pump the...
Vertical-cavity surface-emitting lasers (VCSELs) have achieved remarkable performance in threshold, speed, and efficiency. However the VCSELs have so far achieved their performance without the benefit of a buried-heterostructure (BH) gain structure. A high quality BH gain structure can be expected to dramatically improve VCSEL performance by eliminating parasitic charging effects in the perimeter...
Nanolasers made from III–V active materials and metal-clad cavities have attracted research interest because of the small volume possible with metal nanocavities.1 Proposed applications include intrachip optical interconnects and optical sensors. The metal-clad nanocavities are one of several cavity approaches being studied, and differ from dielectric and semiconductor nanocavities in their high optical...
Decapsulation is the process of removing mold compound from the die surface of a plastic encapsulated device. Typically, the mold compound is removed only in the area above the die and bond wires for failure site isolation and analysis. Hot fuming sulfuric and nitric acids are the most commonly used decapsulating agent. Jet etching system employing these acids or mixture of these acids have become...
Equivalent moisture distibution calaculation for fast moisture sensitivity level analysis (MSLA) is disccused in this paper. Moisture diffusion time can be speed up to 1.7 to 3.2 times according to the simulation. Moisture diffusion properties are also disccused in this paper and this method can be used for fast moisture sensitivity level analysis.
An ongoing programme looking at the active detection of special nuclear material is being undertaken by the Atomic Weapons Establishment in collaboration with the Naval Research Laboratory (NRL). As part of this programme, proton beam generation experiments were conducted at the NRL Mercury pulsed power accelerator using a lithium metal cathode to generate neutrons through the 7Li(p,n)7Be reaction...
Laser diodes based on planar quantum wells produce power conversion efficiencies that tend to saturate at room temperature at ∼ 70%. These planar quantum well laser diodes have been heavily researched and developed and the power conversion efficiencies appear close to the material limits for optimized devices. The power conversion efficiency can be treated as a product of separate efficiencies based...
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