639 research outputs found
Design, processing and testing of LSI arrays, hybrid microelectronics task
Mathematical cost models previously developed for hybrid microelectronic subsystems were refined and expanded. Rework terms related to substrate fabrication, nonrecurring developmental and manufacturing operations, and prototype production are included. Sample computer programs were written to demonstrate hybrid microelectric applications of these cost models. Computer programs were generated to calculate and analyze values for the total microelectronics costs. Large scale integrated (LST) chips utilizing tape chip carrier technology were studied. The feasibility of interconnecting arrays of LSU chips utilizing tape chip carrier and semiautomatic wire bonding technology was demonstrated
Применение гибких носителей при сборке кремниевых детекторов
Показана перспективность применения гибких носителей типа «алюминий-полиимид» для сборки детекторов различного назначения. Рассмотрены преимущества данной технологии в сравнении с проволочными соединениями детекторов.Показана перспективність застосування технології гнучких носіїв типу «алюміній-полімід» для детекторів різного призначення, в т. ч. кремнієвих мікрострипових детекторів. Приведені реальні конструкції і збірки різних вузлів детекторів з використанням технології гнучких носіїв, зокрема мікрокабелів, адаптерів, шлейфів, міжз'єднань. Розглянуто переваги даної технології порівняно з дротяними з.єднаннями детекторів з великою кількістю виводів і малим кроком.·Perspective of aluminium-poliimide flexible carrier technology usage for assembling of different purpose detectors, including Si microstripe detectors is shown. Real constructs and assembly examples of different detector units with usage of flexible carrier technology, in particular microcables, adapters, cables, interconnections etc., are shown. Advantages of this technology are considered in comparison with ordinary wire connections in case of comparatively large amount of outlets and small step
Nanoantenna-Microcavity Hybrids with Highly Cooperative Plasmonic-Photonic Coupling
Nanoantennas offer the ultimate spatial control over light by concentrating
optical energy well below the diffraction limit, whereas their quality factor
(Q) is constrained by large radiative and dissipative losses. Dielectric
microcavities, on the other hand, are capable of generating a high Q-factor
through an extended photon storage time but have a diffraction-limited optical
mode volume. Here we bridge the two worlds, by studying an exemplary hybrid
system integrating plasmonic gold nanorods acting as nanoantennas with an
on-resonance dielectric photonic crystal (PC) slab acting as a low-loss
microcavity and, more importantly, by synergistically combining their
advantages to produce a much stronger local field enhancement than that of the
separate entities. To achieve this synergy between the two polar opposite types
of nanophotonic resonant elements, we show that it is crucial to coordinate
both the dissipative loss of the nanoantenna and the Q-factor of the low-loss
cavity. In comparison to the antenna-cavity coupling approach using a
Fabry-Perot resonator, which has proved successful for resonant amplification
of the antenna's local field intensity, we theoretically and experimentally
show that coupling to a modest-Q PC guided resonance can produce a greater
amplification by at least an order of magnitude. The synergistic
nanoantenna-microcavity hybrid strategy opens new opportunities for further
enhancing nanoscale light-matter interactions to benefit numerous areas such as
nonlinear optics, nanolasers, plasmonic hot carrier technology, and
surface-enhanced Raman and infrared absorption spectroscopies.Comment: Revised version after acceptanc
Efficiency Analysis of LOHC Based Hydrogen Energy Storage System
有机液体储氢材料是理想的储氢介质。本文建立了以有机液体储氢材料为基础的氢储能系统的能效分析模型,并以乙基咔唑和二苄基甲苯两种有机液体储氢载体为算例,逐步计算了制氢、储氢和燃料电池等过程的能耗。研究结果表明,乙基咔唑能效优于二苄基甲苯,其储氢效率为84.17%、系统能效为47.58%。本研究所开发的框架可衡量基于有机液体储氢载体的氢储能系统的能效,并可用于筛选有机液体储氢载体
Sistem Penghantaran Obat Melewati Barrier Darah Otak
Brain barrier is effective barrier in drug delivery to brain. For effectiveness drug deliveryneed be desaigned a delivery with nanoparticle technology. Nanoparticles are solid colloidalparticles ranging in size from 1 to 1000 nm that are utilized as drug delivery agents. The primaryadvantages of nanoparticle carrier technology is that nanoparticles mask the blood – brain barrierlimiting characteristics of the therapeutic drug molecule. Furthermore, this system may slow drugrelease in the brain, decreasing peripheral toxicity. The method which elaboration in manufacturenanoparticles are emulsion polimerization, interfacial polimerization, desolvation evaporation andsolvent deposition. Currently, report evaluating nanoparticles for brain delivery have studiedanesthetic and chemoterapeutic agent. These studies are reviewed for efficacy and mechanisms oftransport. Physiological factors such as phagocytic activity of the reticuloendothelial system andprotein opsonization may limit the amount of brain delivered drug. Nanoparticle technology appearsto have significant promise in delivering therapeutic molecules across the blood-brain barrier
IDEALIST control and service management solutions for dynamic and adaptive flexi-grid DWDM networks
Wavelength Switched Optical Networks (WSON) were designed with the premise that all channels in a network have the same spectrum needs, based on the ITU-T DWDM grid. However, this rigid grid-based approach is not adapted to the spectrum requirements of the signals that are best candidates for long-reach transmission and high-speed data rates of 400Gbps and beyond. An innovative approach is to evolve the fixed DWDM grid to a flexible grid, in which the optical spectrum is partitioned into fixed-sized spectrum slices. This allows facilitating the required amount of optical bandwidth and spectrum for an elastic optical connection to be dynamically and adaptively allocated by assigning the necessary number of slices of spectrum. The ICT IDEALIST project will provide the architectural design, protocol specification, implementation, evaluation and standardization of a control plane and a network and service management system. This architecture and tools are necessary to introduce dynamicity, elasticity and adaptation in flexi-grid DWDM networks. This paper provides an overview of the objectives, framework, functional requirements and use cases of the elastic control plane and the adaptive network and service management system targeted in the ICT IDEALIST project
MONROE-Nettest: A Configurable Tool for Dissecting Speed Measurements in Mobile Broadband Networks
As the demand for mobile connectivity continues to grow, there is a strong
need to evaluate the performance of Mobile Broadband (MBB) networks. In the
last years, mobile "speed", quantified most commonly by data rate, gained
popularity as the widely accepted metric to describe their performance.
However, there is a lack of consensus on how mobile speed should be measured.
In this paper, we design and implement MONROE-Nettest to dissect mobile speed
measurements, and investigate the effect of different factors on speed
measurements in the complex mobile ecosystem. MONROE-Nettest is built as an
Experiment as a Service (EaaS) on top of the MONROE platform, an open dedicated
platform for experimentation in operational MBB networks. Using MONROE-Nettest,
we conduct a large scale measurement campaign and quantify the effects of
measurement duration, number of TCP flows, and server location on measured
downlink data rate in 6 operational MBB networks in Europe. Our results
indicate that differences in parameter configuration can significantly affect
the measurement results. We provide the complete MONROE-Nettest toolset as open
source and our measurements as open data.Comment: 6 pages, 3 figures, submitted to INFOCOM CNERT Workshop 201
Hortibot: Feasibility study of a plant nursing robot performing weeding operations – part IV
Based on the development of a robotic tool carrier (Hortibot) equipped with weeding tools, a feasibility study was carried out to evaluate the viability of this innovative technology. The feasibility was demonstrated through a targeted evaluation adapted to the obtainable knowledge on the system performance in horticulture.
A usage scenario was designed to set the implementation of the robotic system in a row crop of seeded bulb onions considering operational and functional constraints in organic crop, production. This usage scenario together with the technical specifications of the implemented system provided the basis for the feasibility analysis, including a comparison with a conventional weeding system. Preliminary results show that the automation of the weeding tasks within a row crop has the potential of significantly reducing the costs and still fulfill the operational requirements set forth.
The potential benefits in terms of operational capabilities and economic viability have been quantified. Profitability gains ranging from 20 to 50% are achievable through targeted applications. In general, the analyses demonstrate the operational and economic feasibility of using small automated vehicles and targeted tools in specialized production settings
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