Infinite randomness and quantum Griffiths effects in a classical system: the randomly layered Heisenberg magnet

We investigate the phase transition in a three-dimensional classical Heisenberg magnet with planar defects, i.e., disorder perfectly correlated in two dimensions. By applying a strong-disorder renormalization group, we show that the critical point has exotic infinite-randomness character. It is accompanied by strong power-law Griffiths singularities. We compute various thermodynamic observables paying particular attention to finite-size effects relevant for an experimental verification of our theory. We also study the critical dynamics within a Langevin equation approach and find it extremely slow. At the critical point, the autocorrelation function decays only logarithmically with time while it follows a nonuniversal power-law in the Griffiths phase.Comment: 10 pages, 2 eps figures included, final version as published

Cactus Graphs with Cycle Blocks and Square Product Labeling

A graph G is known to be square product labeling, if there exists a bijection f from V (G) to {1, 2, 3,..., p} which induces f* from E(G) to N, defined by f*(uv) = f(u)^2 f(v)^2 is injective for each uv in E(G), for which the labeling pattern of edges are distinct. G is considered to be square product graph, if it admits a square product labeling. In this article, the results are obtained on square product labeling for some cactus graphs with cycle blocks

Square Sum And Square Difference Labelings Of Semitotal-block Graph For Some Class Of Graphs

A graph G is said to be square sum and square difference labeling, if there exists a bijection f from V (G) to {1, 2, 3, ..., (p − 1)} which induces the injective function f ∗ from E(G) to N, defined by f ∗(uv) = f(u)2 + f(v)2 and f ∗(uv) = f(u)2 − f(v)2 respectively, for each uv ∈ E(G) and the resulting edges are distinctly labeled. G is said to be square sum and square difference graph, if it asdmits a square sum and square difference labeling respectively. The present work investigates, square sum and square difference labelingof semitotal-block graph for some class of graphs which are proved using number theory concept

Narrow Band Interference Elimination based on Compressed Sensing in UWB Energy Detector

Wireless communication applications with large signal bandwidth are developed tremendously in recent times. Due to large bandwidth the wide band communication causes huge power consumption and signal deterioration after addition of narrow band interference (NBI). The ultra wide band (UWB) energy detector, which is highly robust against NBI signal is presented. Compressed sensing is implemented to reduce the power consumption at the analog to digital converter with approximated message passing reconstruction. In addition to this, digital notch is employed to eliminate the NBI affected measurements from compressed version of the received signal before applying it to the energy detector. To analyze the efficiency of the detector, the energy detection and bit error probability of the detector in the absence of NBI and after mitigating NBI is compared. The simulation results are the evidence of effectiveness of the presented energy detector.

Drug promotional literature: Does pharmaceutical industry follow WHO guidelines?

Background: Promotional literature is an important tool for both pharmaceutical industry (marketing strategy) and physicians (up to date knowledge). Important ways of doing drug promotion are visual aids, leave behind, flip charts. World Health Organisation has laid down criteria for drug promotional literature.Methods: A cross sectional observational study was performed in Department of Pharmacology, Tertiary Care Teaching Hospital of Mumbai. Total 137 drug promotional Literatures were randomly collected from different outpatient departments out of which 37 were excluded. 100 drug promotional literatures were evaluated by using WHO guidelines.Results: None of drug promotional literature fulfilled all WHO criteria. Though name of the active ingredient and brand name featured in 100% of the literature, 69% of them lacked information related to adverse drug reactions, precautions, contraindications and warnings. The approved therapeutic uses were mentioned in 96% but the dosage regimen in 38% only. Majority of the literature (80%) did not mention the drug interactions. References were given in 76% of the literature of which 87% were from journal article.Conclusions: Pharmaceutical industries do not follow WHO guidelines in toto to promote their product. Thus more strict regulations need to be implemented for proper promotion and dissemination of information about new drugs

Obstetric outcome of antenatal mother with history of spontaneous abortion attending a tertiary care hospital in Puducherry

Background: The pregnancy time is critical for both the mother’s and the baby’s health. The most common unfavourable pregnancy outcome is spontaneous abortion. Spontaneous pregnancy loss is a surprisingly common event, with roughly 15% of all clinically diagnosed pregnancies ending in pregnancy failure. Couples who suffer from frequent miscarriages may find it difficult to cope physically and emotionally. This study was planned to evaluate the association of preterm delivery, low birth weight, IUGR, recurrence of abortion, still birth, IUD, PROM, or any other adverse outcome in patients with history of previous spontaneous abortions. Objectives were to look for association between previous spontaneous abortion and preterm delivery, low birth weight, IUGR, recurrence of abortion, stillbirth, IUD, PROM and other complications in subsequent pregnancies. Methods: This was a prospective observational study done with 150 samples. The information such as demographic data of the antenatal women, clinical history, past obstetrics history, clinical examination, laboratory investigations and outcome of present pregnancy were collected and evaluated. Results: Maternal complications such as UTI (4.6%), Infection and fever (5.3%), PROM (2.7%), PPH (4%), hyperemesis 4%, PPROM 2.7% were observed. In study population, 60% of the foetus were in cephalic position, 19% in breech presentation and 21% in shoulder presentation.  29% of the women had preterm delivery, 34% were delivered by LSCS and 6% had spontaneous abortions. Low birth weight babies delivered in 25% cases. Foetal distress was observed in 15%, FGR in 9%, still birth in 3% and IUD in 1%. Conclusions: Women with previous spontaneous abortion are associated with a higher incidence of preterm delivery, cesarean section rate, neonatal low birth weight, fetal distress and high possibility of infection. Therefore, patients with previous spontaneous miscarriage represent a high-risk population for obstetric complication and close surveillance during the antenatal period is required

Detection and Elimination of Fake Access Points in WLAN using Multi Agents Sourcing MethodologyÂ

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