22 research outputs found
Simulation Based Comparison Between OWL and DSDV
No full textAbstractMobile ad-hoc network is collection of mobile nodes like laptops; cell phones which have limited processing power and limited battery power also have limited bandwidth. MANET is self-adjustable with dynamic topology network, because of its mobile environment, routing face challenges. Main challenges in routing are to maximize delivery ratio and minimize End-to-End delay with minimum use of nodes resources, because mobile nodes have limited batter power and bandwidth. DSDV is proactive type routing protocol which trying to minimize route discovery time by manage route information in routing table and broadcast to other neighbors. OWL is a reactive routing protocol which uses DFS instead of broadcasting of RREQ to all its neighbors. In this paper we are going to compare these two routing protocol on the basis of their power consumption in different phases of routing
Comparative Analysis of Scalability and Energy Efficiency of Ordered Walk Learning Routing Protocol
No full text
On the support of symmetric infinitely divisible and stable probability measures on LCTVS
No full textIt is shown that the topological support (supp.) of a
τ
\tau
-regular, symmetric, infinitely divisible (resp. stable of any index
α
∈
(
0
,
2
)
\alpha \in (0,2)
) probability measure on a Hausdorff LCTVS E is a subgroup (resp. a subspace) of E. The part regarding the support of a stable probability measure of this theorem completes a result of A. De-Acosta [Ann. of Probability 3 (1975), 865-875], who proved a similar result for
α
∈
(
1
,
2
)
\alpha \in (1,2)
, and the author [Proc. Amer. Math. Soc. 63 (1977), 306-312], who proved it for
α
∈
[
1
,
2
)
\alpha \in [1,2)
. Further, it provides a complete affirmative solution to the question, raised by J. Kuelbs and V. Mandrekar [Studia Math. 50 (1974), 149-162], of whether the supp. of a symmetric stable probability measure of index
α
∈
(
0
,
1
]
\alpha \in (0,1]
on a separable Hilbert space H is a subspace of H.</p
An epidemiological study of primary hypertension in children and adolescents 5 to 18 years of age in a rural Newfoundland community
No full textAn epidemiological study of primary hypertension in children and adolescents attending school in a rural Newfoundland community was carried out in 1977. Blood pressure measurements of 320 subjects 5-18 years of age were taken with a Physiometrics Automatic Blood Pressure Recorder. Of these 320 subjects, 68 had had their blood pressure measured two years earlier with an Arteriosonde 1010 recorder. The blood pressure values of these 68 subjects were used to study the ”tracking" of blood pressure by plotting a scattergram and obtaining linear egression statistics. -- Subjects were grouped into two year age groups and their blood pressure readings adjusted for age and sex and expressed in standard deviation unit (SDU) or scores. -- SDU scores ≥1 to <2 were considered as “high normal” and used to identify prospective hypertensives. SDU scores ≥2 were used to identify hypertensives. -- The familial aggregation of blood pressure was studied using the Analysis of Variance (ANOVA) technique. -- Blood Pressure readings for two year age groups were correlated with eleven factors. These were: height, weight, Quetelet Index, triceps skinfold thickness, subscapular skinfold thickness, upper arm circumference, resting heart rate, amplitude of P wave in lead II, amplitude of R wave in lead II, family size and birth order. -- Multiple linear regression analysis was carried out for children in the 5-12 and adolescents in the 13-18 year age groups. This division was made to ascertain whether the determinants of blood pressure levels might be different for children and adolescents. Blood pressure in SDU was the dependent variable and the eleven factors listed above were the independent variables. The data on three of these independent variables, height, weight, and Quetelet Index were converted to SDU. The level of statistical significance was chosen as p ≤0.05. -- The following results were obtained: -- (a) 14.4% of the 320 subjects had "high normal" systolic blood pressure with SDU scores ≥1 to <2 and 15.3% had “high normal” diastolic (4th phase) blood pressure with SDU scores ≥1 to <2. 1.6% had systolic hypertension with SDU scores ≥2. 1.6% had diastolic hypertension with SDU scores ≥2. -- (b) There was a strong significant tracking of systolic blood pressure. The regression coefficient of follow-up systolic blood pressure on initial systolic blood pressure was 0.53 (p <0.00002). A significant tracking effect of diastolic (4th phase) blood pressure was also obtained. The regression coefficient of follow-up diastolic (4th phase) blood pressure on initial diastolic (4th phase) blood pressure was 0.19 (p <0.05). -- (c) A significant aggregation of systolic (p <0.01) and diastolic (p <0.01) (4th phase) blood pressure within families was found for subjects 5-18 years of age. -- (d) Correlation analysis showed that systolic blood pressure was positively correlated with amplitude of P wave in lead II and amplitude of R wave in lead II in all age groups of each sex. Diastolic (4th phase) blood pressure was positively correlated with height, triceps skinfold thickness, resting heart rate, amplitude of P wave in lead II and amplitude of R wave in lead II in all age groups of each sex. -- (e) Multiple linear regression analysis showed that resting heart rate and amplitude of P wave in lead II were significant positive predictors of both systolic and diastolic (4th phase) blood pressure in the 5-12 and 13-18 year age groups. The amplitude of the R wave in lead II was a significant positive predictor of systolic blood pressure in the 5-12 and 13-18 year age groups. -- The findings relating amplitude of P wave in lead II and amplitude of R wave in lead II to blood pressure levels in children and adolescents is, to the author's knowledge, new and have never been reported before.Bibliography : leaves 153-160
Synthesis and Characterization of Multiwalled Carbon Nanotubes (MWCNTs) Dispersed ZnS Based Photocatalytic Activity
No full textZinc Sulfide (ZnS) based photocatalytic activity has been focused in solar hydrogen production and water treatment process because to their very strong redox reaction. Due to wide visible light range, ZnS becomes a promising semiconductor in formation of photocatalysts. The bandgap energies (Eg) of all prepared
samples ZnS NCs and MWCNTs/ZnS nanocomposites were evaluated and Methylene Blue (MB) degradation study occurring of ZnS NCs and MWCNTs/ZnS nanocomposites were evaluated under visible light using UV-visible spectroscopy. The author found that removal rate of MB is greater than 95 percentage in
the presence of MWCNTs/ZnS composites photocatalysts after 50 min. Crystalline grain size and structure
of photocatalyst were characterized by X-ray Diffraction (XRD) spectroscopy. The enhancement of photocatalytic activity can be associated by many factors like a suitable band gap in visible region, crystalline
structure of nanocomposites and particle size in nanometer (nm) of the MWCNTs/ZnS nanocomposites.
The suitable photocatalytic reaction and mechanisms of MB degradation also included in this article
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Ultrasound diagnosis of dissecting thoracic aortic aneurysms: procedure with a handheld device and a video-illustrated case
No full textAcute thoracic aortic dissection is an uncommon, although not rare, life-threatening condition. With protean signs and symptoms that often suggest more common cardiac or pulmonary conditions, it can be difficult to diagnose. Ultrasound has proven useful in making the correct diagnosis. This case demonstrates that training gained using standard ultrasound machines can be easily and successfully adapted to newer handheld ultrasound devices. The examination technique using the handheld device is illustrated with photos and a video. © The Author(s) 2021.This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at [email protected]
Balram’s Struggle to Reach the Higher Social Status in Aravind Adiga’s The White Tiger
No full textThis study aims to explain about Balram’s struggle to reach the higher social class, from lower class becomes upper class in the novel The White Tiger written by Aravind Adiga. The explanation from this study is talk about the depiction of lower class from their place, education opportunity, job opportunity and health opportunity, and also the depiction of upper class that representation from four characters that full of power. The purpose of this thesis is to explain the depiction of social class to describe Balram’s struggle to reach the higher social class and to explain the impacts of Balram’s struggle to his life. In this thesis, the author uses Marxist theory and focuses on social class theory. The result of this study shows that there are two classes in the novel, they are lower class and upper class, Balram’s struggle to reach the higher social class by working as a waiter in tea-shop, a driver, the main driver, and starting a car rental business with the stolen money. And the impact of Balram struggle is he moves into another city to start his new life
