728 research outputs found
Streaming Analytics and Workflow Automation for DFS
Researchers reuse data from past studies to avoid costly re-collection of experimental data. However, large-scale data reuse is challenging due to lack of consensus on metadata representations among research groups and disciplines. Dataset File System (DFS) is a semi-structured data description format that promotes such consensus by standardizing the semantics of data description, storage, and retrieval. In this paper, we present analytic-streams – a specification for streaming data analytics with DFS, and streaming-hub – a visual programming toolkit built on DFS to simplify data analysis work-flows. Analytic-streams facilitate higher-order data analysis with less computational overhead, while streaming-hub enables storage, retrieval, manipulation, and visualization of data and analytics. We discuss how they simplify data pre-processing, aggregation, and visualization, and their implications on data analysis workflows
Effect of residual detergents in specimen collection containers on routine serum biochemical analytes
The use of Teepol, Lysol and sodium hypochlorite are frequent in reusing of specimen collection tubes by the state hospitals in Sri Lanka. Detergent residue in collection tubes is thought to be the reason for uncertain results in the recent past. This raised a concern to evaluate the effect of washing of the specimen collection tubes by various detergents on serum creatinine, aspartate transaminase (AST), Na+ and K+. Three sets of newly purchased glass Khan tubes were washed using Teepol, Lysol (concentration of 1%), and sodium hypochlorite (0.1 %) adhering to World Health Organization protocol. Blood from a single donor was aliquoted to a detergent washed tubes (test) and to a newly purchased plain glass Khan tube (control). Both were tested for serum creatinine, AST, Na+ and K+. A sample size of 20 was analyzed for each detergent-washed tube. There was no significant difference in serum creatinine, AST and K+ when Teepol, Lysol or sodium hypochlorite washed tubes were used in sequence (p>0.05). Na+ concentrations measured in serum was significantly different in specimens collected to Lysol-washed tubes (p<0.05). The Lysol-washed tubes were significantly contaminated with detergent residues. In conclusion, domestic detergents (Teepol, Lysol and sodium hypochlorite) don’t impart a significant effect on tested analytes if the cleansing is done according to guidelines by World Health Organization. However, newly purchased tubes are recommended in critical investigations such as serum electrolytes to improve the accuracy of laboratory reports.
KEYWORDS: Teepol, Lysol, Sodium hypochlorite, creatinine, Na+ and K+
 
Impact of Decision Making, Reward Management on Job Performance: Mediation of Job Satisfaction: A Case of a Private Banks in Sri Lanka
With the huge competition prevailing in the business world, organizations focusing more on job performance than ever before as less performed employees will lead the organizations for destruction. With this interest, organizations looking forward to recognize how job performance can be enhanced within the organization, which leads to a competitive edge. By identifying this importance, this study is focused on to investigate the impact of decision making and reward management on job performance, and to identify the mediation effect of job satisfaction on the above relationships. self administered questionnaires were used to collect the date and data were collected from 311 employees in private banks in Sri Lanka. The impact of decision making and reward management on job performance were significant and partial mediation of job satisfaction on the above relationships were found out. Thereby, this study sign the managers of the organizations to focus more on practices of the organizations to enhance the performance of the employees. Keywords: Decision Making, Job Performance, Job Satisfaction, Private Banks, Reward Management, Sri Lank
A Survey of Attention Deficit Hyperactivity Disorder Identification Using Psychophysiological Data
Attention Deficit Hyperactivity Disorder (ADHD) is one of the most common neurological disorders among children, that affects different areas in the brain that allows executing certain functionalities. This may lead to a variety of impairments such as difficulties in paying attention or focusing, controlling impulsive behaviours and overreacting. The continuous symptoms may have a severe impact in the long-term. This paper explores the ADHD identification studies using eye movement data and functional Magnetic Resonance Imaging (fMRI). This study discusses different machine learning techniques, existing models and analyses the existing literature. We have identified the current challenges and possible future directions to provide computational support for early identification of ADHD patients that enable early treatments
Survey on Ten Years of Multi-Depot Vehicle Routing Problems: Mathematical Models, Solution Methods and Real-Life Applications
A crucial practical issue encountered in logistics management is the circulation of final products from depots to end-user customers. When routing and scheduling systems are improved, they will not only improve customer satisfaction but also increase the capacity to serve a large number of customers minimizing time. On the assumption that there is only one depot, the key issue of distribution is generally identified and formulated as VRP standing for Vehicle Routing Problem. In case, a company having more than one depot, the suggested VRP is most unlikely to work out. In view of resolving this limitation and proposing alternatives, VRP with multiple depots and multi-depot MDVRP have been a focus of this paper. Carrying out a comprehensive analytical literature survey of past ten years on cost-effective Multi-Depot Vehicle Routing is the main aim of this research. Therefore, the current status of the MDVRP along with its future developments is reviewed at length in the paper
Experimental Study and CFD Modelling of Minimum Fluidization Velocity for Geldart A, B and D Particles
Influence of culture medium on in-vitro biofilm formation by Candida species
Objectives: Objective of this study was to establish an in vitro biofilm on the 96 well plates and to determine the efficacy of three different culture media on biofilm formation of Candida albicans and C. tropicalis Methods: A 96 well sterile, polystyrene plate was inoculated using 10^6 cell/ml of C. albicans and C. tropicalis suspensions and the growth rate of planktonic cells was determined by measuring the absorbance (OD492) at 2 hour intervals. Adhesion of Candidial cells to initiate the biofilm formation in the presence of three culture media (Yeast Nitrogen Base (YNB) supplemented with 100 mM glucose, Sabouraud Dextrose Broth (SDB) and RPMI1640) was quantified using MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) and Crystal Violet (CV) assay after 90 minutes. Biofilms of C. albicans, C. tropicalis and 1:1 co-biofilms were developed and the growth rates were quantified at 24 hours’ time intervals. Scanning electron microscope (SEM) was performed to assess the architecture. Results: Planktonic cells of both C. albicans and C. tropicalis showed maximum growth with SDB. C. albicans and co-biofilm adhesion were significantly facilitated with RPMI1640 and the best medium for C. tropicalis adhesion was YNB. Biofilms showed the maximum growth rate in RPMI 1640. C. tropicalis exhibited the minimum growth with all three culture media.Conclusions: The maximum growth rate for planktonic C. albicans and C. tropicalis was achieved with SDB. However RPMI 1640 was the best medium for growth of biofilms
Multiplicity dependence of jet-like two-particle correlations in p-Pb collisions at = 5.02 TeV
Two-particle angular correlations between unidentified charged trigger and
associated particles are measured by the ALICE detector in p-Pb collisions at a
nucleon-nucleon centre-of-mass energy of 5.02 TeV. The transverse-momentum
range 0.7 5.0 GeV/ is examined,
to include correlations induced by jets originating from low
momen\-tum-transfer scatterings (minijets). The correlations expressed as
associated yield per trigger particle are obtained in the pseudorapidity range
. The near-side long-range pseudorapidity correlations observed in
high-multiplicity p-Pb collisions are subtracted from both near-side
short-range and away-side correlations in order to remove the non-jet-like
components. The yields in the jet-like peaks are found to be invariant with
event multiplicity with the exception of events with low multiplicity. This
invariance is consistent with the particles being produced via the incoherent
fragmentation of multiple parton--parton scatterings, while the yield related
to the previously observed ridge structures is not jet-related. The number of
uncorrelated sources of particle production is found to increase linearly with
multiplicity, suggesting no saturation of the number of multi-parton
interactions even in the highest multiplicity p-Pb collisions. Further, the
number scales in the intermediate multiplicity region with the number of binary
nucleon-nucleon collisions estimated with a Glauber Monte-Carlo simulation.Comment: 23 pages, 6 captioned figures, 1 table, authors from page 17,
published version, figures at
http://aliceinfo.cern.ch/ArtSubmission/node/161
Charge separation relative to the reaction plane in Pb-Pb collisions at TeV
Measurements of charge dependent azimuthal correlations with the ALICE
detector at the LHC are reported for Pb-Pb collisions at TeV. Two- and three-particle charge-dependent azimuthal correlations in
the pseudo-rapidity range are presented as a function of the
collision centrality, particle separation in pseudo-rapidity, and transverse
momentum. A clear signal compatible with a charge-dependent separation relative
to the reaction plane is observed, which shows little or no collision energy
dependence when compared to measurements at RHIC energies. This provides a new
insight for understanding the nature of the charge dependent azimuthal
correlations observed at RHIC and LHC energies.Comment: 12 pages, 3 captioned figures, authors from page 2 to 6, published
version, figures at http://aliceinfo.cern.ch/ArtSubmission/node/286
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