2,508 research outputs found
Mapping Global Research Output in Big Data during 2007-16
The paper examines global research in big data, as covered in Scopus database 2007-16, on a series of bibliometric indicators. The study finds that big data registered exceedingly fast growth (135.2%), but averaged low citation impact per paper (3.75) and accounted for very low share of highly cited papers (0.86%) in 10 years. The study reports publication trends in big data research by top countries, top institutions, top authors, top journals, major subject areas, publication modes, and country-level share of international collaborative publications. The study concludes that big data is a subject of recent origin. Given its major potential to impact business, governance, society, healthcare, industry and many other sectors, big data is fast emerging as a major discipline of interest and importance to nations, corporates, and institutions across developed and fast emerging economies
On locally quasi A∗ algebras in codimension-one over a Noetherian normal domain
AbstractLet R be Noetherian normal domain. We shall call an R-algebra A quasi A∗ if A=R[X,(aX+b)−1] where X∈A is a transcendental element over R, a∈R∖0, b∈R and (a,b)R=R. In this paper we shall describe a general structure for any faithfully flat R-algebra A which is locally quasi A∗ in codimension-one over R. We shall also investigate minimal sufficient conditions for such an algebra to be finitely generated
Identification of gene network motifs for cancer disease diagnosis
All networks, including biological networks, computer
networks, social networks and more can be represented as
graphs, which include a number of small module such as subgraph,
also called as network motifs. Network motifs are subgraph
which recur themselves in a specific network or different
networks. In biological networks, these network motifs plays very
important role to identify diseases in human beings. In this paper
we have developed a module to identify common network motifs
types from cancer pathways and Signal Transduction Networks
(STNs). It also identifies the topological behaviors of cancer
networks and STNs. In this study, we have implemented five motif
algorithms such as Auto-Regulation Loop (ARL), Feed Backward
Loop (FBL), Feed Forward Loop (FFL), Single-Input Motif (SIM)
and Bi-fan.
These algorithms gives correct results in terms of network
motifs for human cancer and STNs. Finding network motifs by
using online tool is limited to three nodes, but our proposed
work provides facility to find network motifs up to any number
of nodes. We applied five motif algorithms to human cancer
networks and Signal Transduction Networks (STNs) which are
collected from KEGG database as a result we got ”Frequent
Occurrences of Network Motifs (FONMs)”. These FONMs acts
as a references for an oncologist in order to find type of cancer
in human being
20W Output Broadband Amplifier with Automatic Gain Control and Thermal Protection
The requirement is to explore concept, design, fabrication and testing of a common source class B, cwrf amplifier by using readily available MOSFET that can withstand a load mismatch at all phase angles with more than a VSWR of 20:1. This amplifier must give an output of more than 20W with 13dB gain in the frequency range of 28 to 46MHz i.e. 37 ± 9MHz. This module will make one of the stages for a multistage cascaded high power cwrf solid state amplifier. The amplifier must be over current and over voltage protected by using external self-regulated dc power supply at the drain. The amplifier MOSFET device is presently to be biased at the gate with a variable dc supply. This arrangement will make it gain controlled. This will be feed backed from the cwrf output so as to make it automatic gain controlled in future. Various techniques of sampling forward and reflected power at the output must also be explored. A thermoswitch at the heat sink of MOSFET is to be added along with necessary circuitry to regulate the operating temperature, thereby protecting the device from overheating
Estimation of Survival Rates of Female Breast Cancer Patients in Meerut City, India
There is no data available on cancer incidence pattern in Meerut City. This is the first report on breast cancer incidence in females among Meerut urban population during the period of 2008-09, which gives the first hand information on breast cancer incidence in females. The data for this report has been collected by us. The sources for cancer registration are the tertiary care government hospital and two private cancer referral centers in the region. A total of 285 breast cancer cases were registered during the period from 1st January, 2008 to 31st December, 2009. Complete data was analyzed by using SPSS Statistical Software version 17. Complete to Follow Up (CFU) patients survival rate were estimated by Actuarial Method (ACM) and Lost to Follow Up (LFU) patients survival rate were estimated by Lost Adjusted Survival Rate (LAR) Method. The patients were followed up for more than three years. The overall survival rate in age group 40-49 (51%, OR=0.69, CI=0.35-01.32) was higher than that seen in other age groups were comparatively lower than other registries situated in India. Survival rate against Hindu patients (23%, OR=1.78, CI=0.93-3.27) was higher than Muslim patients and it was statistically significant. Patients with tumor size 2cm had a better survival rate (65%, OR=2.22, CI=1.22-3.98) and it was statistically significant (p=.008)
Cytological studies of Brassicaceae Burn. (Cruciferae Juss.) from western Himalayas
Цитологические исследования проведены на 12 видах семейства Brassicaceae Burn. из популяций различных географических зон Западных Гималаев. Определены хромосомные числа для Barbaraea intermedia (n = 16), Cardamine loxostemonoides (n = 8), Nasturtium officinale (n = 8), Sisymbrium orientale (n = 14) и добавлены к известным сведениям об этих видах. Хромосомные числа семи видов, Barbaraea intermedia (n = 8), B. vulgaris (n = 8), Capsella bursa-pastoris (n = 8), Descuriania sophia (n = 10), Rorippa islandica (n = 8), Sisymbrium strictum (n = 7) и Thlaspi alpestre (n = 7), были определены впервые в Индии. Течение мейоза в популяциях семи видов (Barbaraea intermedia, Capsella bursa-pastoris, Coronopus didymus, Descuriania sophia, Nasturtium officinale, Sisymbrium orientale и S. strictum) изменяется от нормального до аномального, в то время как в популяциях Barbaraea vulgaris и Sisymbrium irio наблюдается аномальный ход мейоза. Мейотические аномалии проявляются в виде цитомиксиса, слипшихся хромосом, дезориентированных бивалентов, межбивалентных соединений, формировании отставших хромосом и мостов, что в целом приводит к нарушениям микроспорогенеза. Гетерогенные по размеру фертильные пыльцевые зерна и сниженный репродукционный потенциал наблюдались во всех мейотически аномальных популяціях. В то же время ход мейоза во всех популяциях Cardamine loxostemonoides, Rorippa islandica и Thalspi alpestre был нормальным и сопровождался высокой фертильностью пыльцы.Цитологічні дослідження проведені на 12 видах родини Brassicaceae Burn. з популяцій різних географічних зон Західних Гімалаїв. Визначені хромосомні числа для Barbaraea intermedia (n = 16), Cardamine loxostemonoides (n = 8), Nasturtium officinale (n = 8), Sisymbrium orientale (n = 14) і додані до відомостей про ці види. Хромосомні числа семи видів, Barbaraea intermedia (n = 8), B. vulgaris (n = 8), Capsella bursa-pastoris (n = 8), Descuriania sophia (n = 10), Rorippa islandica (n = 8), Sisymbrium strictum (n= 7) та Thlaspi alpestre (n = 7), були визначені вперше в Індії. Проходження мейозу в популяціях семи видів (Barbaraea intermedia, Capsella bursa-pastoris, Coronopus didymus, Descuriania sophia, Nasturtium officinale, Sisymbrium orientale і S. strictum) змінюється від нормального до аномального, тоді як в популяціях Barbaraea vulgaris і Sisymbrium irio спостерігається аномальний хід мейозу. Мейотичні аномалії проявляються у вигляді цитоміксису, злиплих хромосом, дезорієнтованих бівалентів, міжбівалентних сполук, формуванні відсталих хромосом і мостів, що в цілому призводить до порушень мікроспорогенезу. Гетерогенні за розміром фертильні пилкові зерна та знижений репродукційний потенціал спостерігалися в усіх мейотично аномальних популяціях. В той же час хід мейозу в усіх популяціях Cardamine loxostemonoides, Rorippa islandica і Thalspi alpestre був нормальним і супроводжувався високою фертильністю пилку.Cytological studies have been carried out on 12 species of Brassicaceae Burn. on population basis from different geographical areas of Kashmir and Himachal Pradesh in the Western Himalayas. Variable chromosome reports for Barbaraea intermedia (n = 16), Cardamine loxostemonoides (n = 8), Nasturtium officinale (n = 8), Sisymbrium orientale (n = 14) on world-wide basis have been added to the previous reports of these species. The chromosome numbers in seven species as Barbaraea intermedia (n = 8), B. vulgaris (n = 8), Capsella bursa-pastoris (n = 8), Descuriania sophia (n = 10), Rorippa islandica (n = 8), Sisymbrium strictum (n = 7) and Thlaspi alpestre (n = 7) have been worked out for the first time from India. The meiotic course in the populations of seven species such as Barbaraea intermedia, Capsella bursa-pastoris, Coronopus didymus, Descuriania sophia, Nasturtium officinale, Sisymbrium orientale and S. strictum varies from normal to abnormal while all the populations of two species Barbaraea vulgaris and Sisymbrium irio show abnormal meiotic course. Meiotic abnormalities are in the form of cytomixis, chromosomal stickiness, unoriented bivalents, inter-bivalent connections, formation of laggards and bridges, all resulting into abnormal microsporogenesis. Heterogenous sized fertile pollen grains and reduced reproductive potentialities have invariably been observed in all the meiotically abnormal populations. However, the meiotic course in all the populations of Cardamine loxostemonoides, Rorippa islandica and Thalspi alpestre is found to be normal with high pollen fertility
Radial Excited States for Heavy Quark Systems in NRQCD
Following the Non-Relativistic QCD approach we use a gauge invariant smearing
method with factorization to measure the excitation energies for a heavy
system on a lattice at . The results come
from averaging over an ensemble of 60 QCD configurations. In order to enhance
the signal from each configuration we use wall sources for quark propagators.
The quark Hamiltonian contains only the simplest non-relativistic kinetic
energy term. The results are listed for a range of bare quark masses. The mass
splittings are insensitive to this variable though there are a slight trends
with increasing quark mass. For an appropriate choice of UV cut-off
(Gev) the mass spectrum compares reasonably well with the
experimental values for the spin-averaged energy gaps of the system.
We also present results for the and waves for the lowest bare quark
mass. The results are consistent with degeneracy between the two types of
wave. This encourages the idea that even with our simple quark Hamiltonian the
departure from rotational invariance is not great.Comment: 12 page
Simulated annealing algorithm for solving sequence-dependent disassembly line balancing problem
In this paper, we consider a sequence-dependent disassembly line balancing problem (SDDLBP) with multiple objectives that concerns with the assignment of disassembly tasks to a set of ordered disassembly workstations while satisfying the disassembly precedence constraints and optimizing the effectiveness of several measures considering sequence-dependent time increments among disassembly tasks. Due to the high complexity of the SDDLBP, there is currently no known way to optimally solve even moderately sized instances of the problem; therefore an efficient methodology based on the simulated annealing is proposed to solve the SDDLBP. © IFAC
Comparative study of syndromic and etiological diagnosis of reproductive tract infections/sexually transmitted infections in women in Delhi
SummaryBackgroundThe adequacy of the World Health Organization's syndromic approach for the diagnosis and management of sexually transmitted diseases (STDs), especially at primary health centers (PHCs) and at other levels, is still debatable in different settings in India and requires validation.ObjectivesA cross-sectional study was carried out in women attending the peripheral government clinics of Delhi in order to (1) enumerate their self-reported reproductive tract infection (RTI)/sexually transmitted infection (STI) symptoms; (2) assess their clinical status; (3) determine the syndromic diagnosis of RTI/STI in symptomatic women and etiological diagnosis in both symptomatic and asymptomatic women; and (4) compare the level of agreement between self-reporting of morbidity and syndromic and etiological diagnosis.Materials and methodsThe study was conducted over 26 months in 4090 women attending peripheral government healthcare centers, both rural and urban, in four zones of Delhi. They were recruited into four different study groups: group I, non-pregnant, reporting with symptoms of RTI/STI; group II, with a bad obstetric history or infertility; group III, pregnant women in any trimester attending the antenatal clinic; and group IV, the control group. Gynecological examination, followed by the collection of genital specimens and blood, were performed after informed and written consent was obtained. Every symptomatic patient was managed on the basis of algorithms of the syndromic approach as recommended by the National AIDS Control Organisation (NACO), India. All specimens were transported to the STD Reference Laboratory, Safdarjung Hospital, New Delhi and processed by standard methods to diagnose the various STDs. Laboratory reports were sent to the clinicians and appropriate treatment was instituted. Data were analyzed by applying statistical methods.ResultsOverall, self-reporting of morbidity was 65.0%. However, the percentage of women with some STD-related syndrome was 71.4%. The rural women were observed to have significantly more STD syndromes than their urban counterparts. The etiological diagnosis could be established in only 32.2% of cases.ConclusionsThis study highlights the wide variation between self-reporting of morbidity and syndromic- and etiology-based diagnosis in women from both rural and urban settings. This has implications for the syndromic approach to STI case management. These observations call for a review of the diagnostic policy for RTIs/STIs by national authorities in order to avoid the overuse of antimicrobials. The study also highlights the need for the introduction and/or strengthening of facilities for simple diagnostic tests for RTIs/STIs, especially at the peripheral healthcare level
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