691 research outputs found
A fast and effective DFT for test and diagnosis of power switches in SoCs
No full textPower switches are increasingly becoming dominant leakage power reduction technique for sub-100nm CMOS technologies. Hence, fast and effective DFT solution for test and diagnosis of power switches is much needed to facilitate faster identification of potential faults and their locations. In this paper, we present a novel, coarse-grain DFT solution enabling divide and conquer based test and diagnosis solution of power switches. The proposed solution benefits from exponential time savings compared to previously reported solutions. Our DFT solution requires only (2Γlog2mΓ+ 3) clock cycles in the worst case for test and diagnosis for m-segment power switches. These time savings are further substantiated by effective discharge circuit design, which eliminates the possibility of false test and hence significantly reducing the charge and discharge times. We validated the effectiveness of our proposed solution through SPICE simulations on a number of ISCAS benchmark circuits, synthesized using 90nm gate libraries
AMERICAN GOTHIC MAINSTREAM FICTION
No full textThis is my (Subhasis Chattopadhyay's) draft of PhD pre-submission. Dr. Scriver has (had) put it up online in her blog and I found it today, that is 1:06 pm, 28th May, 2017. I am grateful to her since intellectual ideas can otherwise be hijacked. She has done a wonderful editorial job. I want to make it clear that the author of the blog post is Dr. Scriver and not I. But in the Add Contributor here I cannot insert her name as the author so I have out her as an editor which is incorrect. Her blog-post though is in the public domain. Please see http://prairiemary.blogspot.in/2013/03/it-was-all-very-unexpected-and.htm
State of the Raritan Report, Volume 1, December 2016
No full textThis report updates key indicators of water quality and watershed health for the Raritan Basin that were originally assessed in the 2002 Raritan Basin: Portrait of a Watershed as developed by the New Jersey Water Supply Authority. The objective of that original report, as well as this update, is to inform watershed management and water supply protection needs in the Raritan Basin. This new assessment uses the same eleven key indicators and updates the original data – most from 1986 and 1995 – with data from 2002, 2007 and 2012 in order to determine trends over the past 26 years and to identify data gaps for development of future more comprehensive assessments.Eleven key indicators were assessed for this report including: population; housing units; urban land use; impervious surface cover; forested, coastal and emergent wetlands; upland forest cover; prime agricultural land; groundwater recharge; fish and macroinvertebrate bioassessments; riparian area integrity; and known contaminant sites and groundwater contamination. Overall comparison of this updated analysis with the prior 2002 report (Table 1) shows that trends evident between 1986 and 1995 are continuing in the same general direction though the rate has varied over the longer time period. Trends increased for population, housing units, urban land use and impervious surface cover. An increasing trend for these indicators adds stress on water quality and supplies with potential negative impacts for the watershed. Trends declined for all of the wetland land covers assessed as well as for upland forest, prime agricultural land and groundwater recharge. Downward trends for these indicators suggests that the watershed is losing its natural filtering capacity with attendant negative impacts to water quality. The bioassessment and riparian areas trends were mixed and there was not sufficient data to determine trends for the known contaminated sites and groundwater contamination indicators.more information about report and effort at: http://raritan.rutgers.edu/2016-state-of-the-raritan-report/Authored by the Sustainable Raritan River Initiative. More information about the report and Initiative may be found at: http://raritan.rutgers.edu/2016-state-of-the-raritan-report
Design and Implementation of a Redundant Radix-4 Coprocessor with Binary Interface.
No full textArithmetic Operations in Redundant Radix-4 require lesser time and hardware complexity with respect to those in binary number system. The proposal deals with the Design and Implementation of a coprocessor for some arithmetic and logical operations which can be integrated with the main processor operating in binary mamber system. The implementation is likely to be done using FPGA modules
The Specious Present: background for my students (special author Virginia Woolf)
No full textThis 4 slides' presentation is supplementary material for my students who have opted for Virginia Woolf as their Masters' 'special author'. The presentation shows how James' the specious moment and Husserl's the rough now constitute the matrix of modernist literature, especially the fiction of Virginia Woolf. From St. Augustine to Husserl there is a continuum which has to be understood for engaging with the novels of Virginia Woolf
Optimal Design of Sulfidated Nanoscale Zerovalent Iron for Enhanced Trichloroethene Degradation
No full textSulfidated nanoscale zerovalent iron
(S-nZVI) has the potential to be a cost-effective remediation agent
for a wide range of environmental pollutants, including chlorinated
solvents. Various synthesis approaches have yielded S-nZVI consisting
of a Fe0 (or Fe0/S0) core and FeS
shell, which are significantly more reactive to trichloroethene (TCE)
than nZVI. However, their reactivity is not as high as palladium-doped
nZVI (Pd-nZVI). We synthesized S-nZVI by the co-precipitation of FeS
and Fe0 by using Na2S during the borohydride
reduction of FeSO4 (S-nZVIco). This resulted
in FeS structures bridging the nZVI core and the surface, as confirmed
by electron microscopy and X-ray analyses. The TCE degradation capacity
of up to 0.46 mol TCE/mol Fe0 was obtained for S-nZVIco at a high S loading and was comparable to Pd-nZVI but 60%
higher than the currently most reactive S-nZVI, in which FeS only
coats the nZVI (S-nZVIpost). The high TCE degradation was
due to complete utilization of Fe0 (2 e–/mol Fe0) toward the formation of acetylene. Although
Pd-nZVI yielded 3 e–/mol Fe0, TCE degradation
was comparable because it reduced acetylene further to ethene and
ethane. Under Fe0-limited conditions, the S-nZVIco TCE degradation rate was 16 times higher than that of Pd-nZVI (0.5
wt % Pd) and 90 times higher than that of S-nZVIpost
A comprehensive review on integrated photo rechargeable batteries- supercapacitors, and their techno-economic feasibility
No full textSolar energy is a cost-effective replacement for traditional fossil fuels since it is a green, renewable energy source. Direct solar energy conversion and storage using electrochemistry have been proposed. In this context, the need to create high-performance integrated devices based on solar energy conversion components such as solar cells, photoelectrodes, and electrochemical energy storage components has increased. Carbon and functional materials based on carbon play a major role in the performance of energy conversion/storage components. The techno-economic performance of two alternative hybrid energy storage system designs of the supercapacitor and photo rechargeable battery systems are compared in this review paper. The importance and impact of photoactive nanomaterials acting as photoelectrodes in embedded photo batteries result from their structure, topology, and pertinent for photo charging and Li-ion storage; this photo battery uses highly photosensitive two-dimensional lead halide perovskites. Integrating lithium-ion batteries (LIB) with fast-charging supercapacitors (SCs) decreases the time storage technologies take compared to conventional systems. The important role of carbon‐based materials in integrated devices has been highlighted. The optimized electric renewable model was used to analyze the techno-economic analysis of the fast-charging lithium-ion battery (FCLIB) proposal. The fundamentals of integrated devices are presented, emphasizing the functions performed by carbon-based materials in these hybrid energy devices. This review also highlights the importance of integrated devices, photovoltaic and photoelectrochemical rechargeable batteries, and supercapacitors and their techno-economic viability, challenges, and future development
A review on photocatalysis and nanocatalysts for advanced organic synthesis
No full textControl of redox processes at the molecular level is central to molecular synthesis, and electrochemistry provides a unique means of directing electron flow for chemical transformations. Although the chemistry community has long recognized its power, the potential of electrochemical methods in organic synthesis has not been nearly as exploited academically or industrially. In this respect, a review related to applying nano-photocatalysts in fine chemical synthesis for producing organic compounds has been presented. The existing laboratory and industrial methods of organic synthesis are too resource-intensive, mostly based on non-renewable energy sources, and often require extreme conditions regarding temperature and pressure. In the review, we emphasize the forward organic transformations realizable with the help of such nanomaterials under UV/visible light exposure. Nanophotocatalysts thus offer huge potential for green synthesis of high-value-added organics. This review outlines a huge potential for green synthesis of high-value-added organics in nanophotocatalysts, such as graphene semiconductors, titanium oxide, quantum dots, and carbon-based catalysts. This review aims to present current research in this field and provide an impetus for helpers to further build on this area of social impact. For the first time, this all-inclusive approach helps bridge gaps between these different areas and provides a view of the potential and challenges of electro-organic photocatalysis
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