3,039 research outputs found
Power Theft Identification Using Embedded System
Today, power theft plays the key role in transmission losses of electricity from the generating station to the consumer end. About 30% of power produced is being theft. Though the electricity boards know that there is power theft in the area under their vigilance, they are not able to locate the area or location of theft. So, to identify the power theft and to communicate to the EB there needs a system to be developed. Here comes the system developed by us which will find the power theft if it happens and sends the information about the place of the theft to the nearby Electricity Board
Design and analysis of Low Power High Speed Pulse Triggered Flip Flop
The main important aspect is to outline a high speed and utilization of low power pulse triggered flip-flop and simulate the same. Also, we have to minimize leakage in the consumption of power in a flip-flop by employing pulse triggering technique that is adopted for clocks. Here, to solve the problem in the discharging path of the similar flip flop implementations, we employ signal feed through technique. The discharge time is reduced by the proposed method. This design out performs all the other similar pulse triggered flip flop implementation both in speed and power consumption. Now, it is implemented by employing Cadence Virtuoso Schematic Composer in 90nm GPDK. Simulation is done by a simulator known as Spectre
Webometric Analysis of Open Universities in India
Web Impact Factor (WIF), Search Engine Optimization (SEO) ranking improve the visibility of a website’s presence in the online environment. The present study predominantly focuses on the WIFs of the Indian Open University websites. Calculating three types of web impact factors it has been found that among the selected Open Universities Yashwantrao Chavan Maharashtra Open University (YCMOU), Nashik holds the numero uno status in Simple and Internal-link WIFs with SWIF 0.2214 and IWIF 0.2092. In case of External-link Web Impact Factor (EWIF) Netaji Subhas Open University (NSOU), Kolkata holds the rank one position with EWIF of 9.9750. Among the websites IGNOU holds the best global rank i.e. 4439 and it has the 2nd best Indian rank also i.e. 349. This Open University is followed by KSOU in the global ranking i.e. 4517. KSOU holds the best Indian rank i.e.270. IGNOU has the maximum number of backlinks i.e. 1265605. The website of KSOU having domain authority of 59, ranks highest YCMOU ranks lowest by obtaining 29 out of a total of 100 points. In case of page authority, the website of IGNOU ranks first with page authority score of 59 followed by the UOU having score of 51. Again the least score (35) is obtained by the YCMOU in page authority
Webometric Analysis of Open Universities in India
Web Impact Factor (WIF), Search Engine Optimization (SEO) ranking improve the visibility of a website’s presence in the online environment. The present study predominantly focuses on the WIFs of the Indian Open University websites. Calculating three types of web impact factors it has been found that among the selected Open Universities Yashwantrao Chavan Maharashtra Open University (YCMOU), Nashik holds the numero uno status in Simple and Internal-link WIFs with SWIF 0.2214 and IWIF 0.2092. In case of External-link Web Impact Factor (EWIF) Netaji Subhas Open University (NSOU), Kolkata holds the rank one position with EWIF of 9.9750. Among the websites IGNOU holds the best global rank i.e. 4439 and it has the 2nd best Indian rank also i.e. 349. This Open University is followed by KSOU in the global ranking i.e. 4517. KSOU holds the best Indian rank i.e.270. IGNOU has the maximum number of backlinks i.e. 1265605. The website of KSOU having domain authority of 59, ranks highest YCMOU ranks lowest by obtaining 29 out of a total of 100 points. In case of page authority, the website of IGNOU ranks first with page authority score of 59 followed by the UOU having score of 51. Again the least score (35) is obtained by the YCMOU in page authority
A new method for experimental characterisation of scattered radiation in 64-slice CT scanner
PURPOSE: The consummate 64-slice CT scanner that spawns a new generation of non-invasive diagnostic tool, however revolutionary, brings with it the incidental by-product that is scattered radiation. The extended detector aperture capability in the 64-slcie CT scanner allows the effects of scattered radiation to be more pronounced and therefore demands that the magnitude and spatial distribution of scatter component be addressed during the imaging process. To this end, corrective algorithms need to be formulated on a basis of a precise understanding of scatter distribution. Relative to a 64-slice CT scanner, here now a unique solution is based upon dedicated blockers operative within various detector rows, calculating scatter profiles and scatter to primary ratios (SPR). MATERIALS AND METHODS: A single dimension blocker array was installed beneath the collimator, and the extrapolated shadow area on the detectors revealed the scatter radiation after exposure. The experiment was conducted using a 64-slice CT scanner manufactured by GE Healthcare Technologies. RESULTS: Variables such as tube voltage, phantom size and phantom-off centring on the scatter profile and the SPR was measured using the dedicated blocker method introduced above. When tube voltage is increased from 80kVp to 140kVp in a 21.5 cm water phantom, the SPR is found to reduce from 219.9 to 39.9 respectively. CONCLUSION: The method developed within this study is applicable to any measurement and is direct with minimal complexity
Back reaction, emission spectrum and entropy spectroscopy
Recently, an interesting work, which reformulates the tunneling framework to
directly produce the Hawking emission spectrum and entropy spectroscopy in the
tunneling picture, has been received a broad attention. However, during the
emission process, most related observations have not incorporated the effects
of back reaction on the background spacetime, whose derivations are therefore
not the desiring results for the real physical process. With this point as a
central motivation, in this paper we suitably adapt the \emph{reformulated}
tunneling framework so that it can well accommodate the effects of back
reaction to produce the Hawking emission spectrum and entropy spectroscopy.
Consequently, we interestingly find that, when back reaction is considered, the
Parikh-Wilczek's outstanding observations that, an isolated radiating black
hole has an unitary-evolving emission spectrum that is \emph{not} precisely
thermal, but is related to the change of the Bekenstein-Hawking entropy, can
also be reproduced in the reformulated tunneling framework, meanwhile the
entropy spectrum has the same form as that without inclusion of back reaction,
which demonstrates the entropy quantum is \emph{independent} of the effects of
back reaction. As our final analysis, we concentrate on the issues of the black
hole information, but \emph{unfortunately} find that, even including the
effects of back reaction and higher-order quantum corrections, such tunneling
formalism can still not provide a mechanism for preserving the black hole
information.Comment: 16 pages, no figure, use JHEP3.cls. to be published in JHE
Monopolin subunit Csm1 associates with MIND complex to establish monopolar attachment of sister kinetochores at meiosis I
Sexually reproducing organisms halve their cellular ploidy during gametogenesis by undergoing a specialized form of cell division known as meiosis. During meiosis, a single round of DNA replication is followed by two rounds of nuclear divisions (referred to as meiosis I and II). While sister kinetochores bind to microtubules emanating from opposite spindle poles during mitosis, they bind to microtubules originating from the same spindle pole during meiosis I. This phenomenon is referred to as mono-orientation and is essential for setting up the reductional mode of chromosome segregation during meiosis I. In budding yeast, mono-orientation depends on a four component protein complex referred to as monopolin which consists of two nucleolar proteins Csm1 and Lrs4, meiosis-specific protein Mam1 of unknown function and casein kinase Hrr25. Monopolin complex binds to kinetochores during meiosis I and prevents bipolar attachments. Although monopolin associates with kinetochores during meiosis I, its binding site(s) on the kinetochore is not known and its mechanism of action has not been established. By carrying out an imaging-based screen we have found that the MIND complex, a component of the central kinetochore, is required for monopolin association with kinetochores during meiosis. Furthermore, we demonstrate that interaction of monopolin subunit Csm1 with the N-terminal domain of MIND complex subunit Dsn1, is essential for both the association of monopolin with kinetochores and for monopolar attachment of sister kinetochores during meiosis I. As such this provides the first functional evidence for a monopolin-binding site at the kinetochore
On nonsupersymmetric \BC^4/\BZ_N, tachyons, terminal singularities and flips
We investigate nonsupersymmetric \BC^4/\BZ_N orbifold singularities using
their description in terms of the string worldsheet conformal field theory and
its close relation with the toric geometry description of these singularities
and their possible resolutions. Analytic and numerical study strongly suggest
the absence of nonsupersymmetric Type II terminal singularities (i.e. with no
marginal or relevant blowup modes) so that there are always moduli or closed
string tachyons that give rise to resolutions of these singularities, although
supersymmetric and Type 0 terminal singularities do exist. Using gauged linear
sigma models, we analyze the phase structure of these singularities, which
often involves 4-dimensional flip transitions, occurring between resolution
endpoints of distinct topology. We then discuss 4-dim analogs of unstable
conifold-like singularities that exhibit flips, in particular their Type II GSO
projection and the phase structure. We also briefly discuss aspects of
M2-branes stacked at such singularities and nonsupersymmetric AdS_4\times
S^7/\BZ_N backgrounds.Comment: Latex, 43pgs incl. appendices, 2 eps figs, v2. minor clarifications
added, to appear in JHE
A List Scheduling Heuristic with New Node Priorities and Critical Child Technique for Task Scheduling with Communication Contention
Task scheduling is becoming an important aspect for parallel programming of modern embedded systems. In this chapter, the application to be scheduled is modeled as a Directed Acyclic Graph (DAG), and the architecture targets parallel embedded systems composed of multiple processors interconnected by buses and/or switches. This chapter presents new list scheduling heuristics with communication contention. Furthermore, we define new node priorities (top level and bottom level) to sort nodes, and propose an advanced technique named critical child to select a processor to execute a node. Experimental results show that the proposed method is effective to reduce the schedule length, and the runtime performance is greatly improved in the cases of medium and high communication. Since the communication cost is increasing from medium to high in modern applications like digital communication and video compression, the proposed method is well-adapted for scheduling these applications over parallel embedded systems
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