2,488 research outputs found
Making a rainbow workstation for a chemistry lab
Chemical kinetics is the study of how quickly and by what means chemical reactions proceed. Some reactions are so fast and complicated that data must be taken very quickly and then lengthy calculations must be done to get results. Computers speed these studies greatly. The system to he described uses a DEC-Rainbow microcomputer as a terminal for a workstation. The system may collect 8k of buffered data at a rate of 1MHz and then upload the data to a VAX for analysis using the same Rainbow u a graphics terminal. The program for data analysis, called KinSim, will then accept the data and also other information about the chemical reactions in the same symbolic format that chemists use so that the analysis may be done. The analysis consists of simulating the chemical reactioll8 from the information provided and compare it with the experimental data that was collected earlier on the Rainbow
Password Cracking and Countermeasures in Computer Security: A Survey
With the rapid development of internet technologies, social networks, and
other related areas, user authentication becomes more and more important to
protect the data of the users. Password authentication is one of the widely
used methods to achieve authentication for legal users and defense against
intruders. There have been many password cracking methods developed during the
past years, and people have been designing the countermeasures against password
cracking all the time. However, we find that the survey work on the password
cracking research has not been done very much. This paper is mainly to give a
brief review of the password cracking methods, import technologies of password
cracking, and the countermeasures against password cracking that are usually
designed at two stages including the password design stage (e.g. user
education, dynamic password, use of tokens, computer generations) and after the
design (e.g. reactive password checking, proactive password checking, password
encryption, access control). The main objective of this work is offering the
abecedarian IT security professionals and the common audiences with some
knowledge about the computer security and password cracking, and promoting the
development of this area.Comment: add copyright to the tables to the original authors, add
acknowledgement to helpe
A putative serine protease, SpSsp1, from Saprolegnia parasitica is recognised by sera of rainbow trout, Oncorhynchus mykiss
Acknowledgements Our work was supported by the BBSRC (BB/C518457/1, BB/G012075/1, BB/J018333/1) (K.L.M., C.J.S., J.S.C., K.S.D., and P.v.W.), the University of Aberdeen (V.L.A., C.J.S., and P.v.W.), MSD Animal Health (J.S.C., K.S.D., and A.H.v.d.B), and The Royal Society (P.v.W.). This work was also supported by a Marie Curie Initial Training Networks with the SAPRO (sustainable approaches to reduce Oomycete (Saprolegnia) infections in aquacultures) grant PITN-GA-2009-238550 (A.H.v.d.B., L.L., C.J.S., P.v.W.). We would like to acknowledge Aberdeen Proteomics for carrying out LC–MS/MS and Laura Grenville-Briggs for valuable discussion and technical help. We are grateful to the Broad Institute (Carsten Russ, Rays Jiang, Brian Haas, and Chad Nusbaum), Brett Tyler (VBI), and P.v.W. for early release of draft supercontigs of the genome sequence of isolate CBS233.65, which helped us identify SpSsp1.Peer reviewedPublisher PD
Analysis of a quenched lattice-QCD dressed-quark propagator
Quenched lattice-QCD data on the dressed-quark Schwinger function can be
correlated with dressed-gluon data via a rainbow gap equation so long as that
equation's kernel possesses enhancement at infrared momenta above that
exhibited by the gluon alone. The required enhancement can be ascribed to a
dressing of the quark-gluon vertex. The solutions of the rainbow gap equation
exhibit dynamical chiral symmetry breaking and are consistent with confinement.
The gap equation and related, symmetry-preserving ladder Bethe-Salpeter
equation yield estimates for chiral and physical pion observables that suggest
these quantities are materially underestimated in the quenched theory: |<bar-q
q>| by a factor of two and f_pi by 30%.Comment: 9 pages, LaTeX2e, REVTEX4, 6 figure
Aerospace Medicine and Biology: A continuing bibliography with indexes (supplement 290)
This bibliography lists 125 reports, articles and other documents introduced into the NASA scientific and technical information system in October 1986
Large-scale Continuous Gesture Recognition Using Convolutional Neural Networks
This paper addresses the problem of continuous gesture recognition from
sequences of depth maps using convolutional neutral networks (ConvNets). The
proposed method first segments individual gestures from a depth sequence based
on quantity of movement (QOM). For each segmented gesture, an Improved Depth
Motion Map (IDMM), which converts the depth sequence into one image, is
constructed and fed to a ConvNet for recognition. The IDMM effectively encodes
both spatial and temporal information and allows the fine-tuning with existing
ConvNet models for classification without introducing millions of parameters to
learn. The proposed method is evaluated on the Large-scale Continuous Gesture
Recognition of the ChaLearn Looking at People (LAP) challenge 2016. It achieved
the performance of 0.2655 (Mean Jaccard Index) and ranked place in
this challenge
Modeled flux and polarisation signals of horizontally inhomogeneous exoplanets, applied to Earth--like planets
We present modeled flux and linear polarisation signals of starlight that is
reflected by spatially unresolved, horizontally inhomogeneous planets and
discuss the effects of including horizontal inhomogeneities on the flux and
polarisation signals of Earth-like exoplanets. Our code is based on an
efficient adding--doubling algorithm, which fully includes multiple scattering
by gases and aerosol/cloud particles. We divide a model planet into pixels that
are small enough for the local properties of the atmosphere and surface (if
present) to be horizontally homogeneous. Given a planetary phase angle, we sum
up the reflected total and linearly polarised fluxes across the illuminated and
visible part of the planetary disk, taking care to properly rotate the
polarized flux vectors towards the same reference plane. We compared flux and
polarisation signals of simple horizontally inhomogeneous model planets against
results of the weighted sum approximation, in which signals of horizontally
homogeneous planets are combined. Apart from cases in which the planet has only
a minor inhomogeneity, the signals differ significantly. In particular, the
shape of the polarisation phase function appears to be sensitive to the
horizontal inhomogeneities. The same holds true for Earth-like model planets
with patchy clouds above an ocean and a sandy continent. Our simulations
clearly show that horizontal inhomogeneities leave different traces in flux and
polarisation signals. Combining flux with polarisation measurements would help
retrieving the atmospheric and surface patterns on a planet
Integrating heterogeneous distributed COTS discrete-event simulation packages: An emerging standards-based approach
This paper reports on the progress made toward the emergence of standards to support the integration of heterogeneous discrete-event simulations (DESs) created in specialist support tools called commercial-off-the-shelf (COTS) discrete-event simulation packages (CSPs). The general standard for heterogeneous integration in this area has been developed from research in distributed simulation and is the IEEE 1516 standard The High Level Architecture (HLA). However, the specific needs of heterogeneous CSP integration require that the HLA is augmented by additional complementary standards. These are the suite of CSP interoperability (CSPI) standards being developed under the Simulation Interoperability Standards Organization (SISO-http://www.sisostds.org) by the CSPI Product Development Group (CSPI-PDG). The suite consists of several interoperability reference models (IRMs) that outline different integration needs of CSPI, interoperability frameworks (IFs) that define the HLA-based solution to each IRM, appropriate data exchange representations to specify the data exchanged in an IF, and benchmarks termed CSP emulators (CSPEs). This paper contributes to the development of the Type I IF that is intended to represent the HLA-based solution to the problem outlined by the Type I IRM (asynchronous entity passing) by developing the entity transfer specification (ETS) data exchange representation. The use of the ETS in an illustrative case study implemented using a prototype CSPE is shown. This case study also allows us to highlight the importance of event granularity and lookahead in the performance and development of the Type I IF, and to discuss possible methods to automate the capture of appropriate values of lookahead
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