Securely Outsourcing Large Scale Eigen Value Problem to Public Cloud

Cloud computing enables clients with limited computational power to economically outsource their large scale computations to a public cloud with huge computational power. Cloud has the massive storage, computational power and software which can be used by clients for reducing their computational overhead and storage limitation. But in case of outsourcing, privacy of client's confidential data must be maintained. We have designed a protocol for outsourcing large scale Eigen value problem to a malicious cloud which provides input/output data security, result verifiability and client's efficiency. As the direct computation method to find all eigenvectors is computationally expensive for large dimensionality, we have used power iterative method for finding the largest Eigen value and the corresponding Eigen vector of a matrix. For protecting the privacy, some transformations are applied to the input matrix to get encrypted matrix which is sent to the cloud and then decrypting the result that is returned from the cloud for getting the correct solution of Eigen value problem. We have also proposed result verification mechanism for detecting robust cheating and provided theoretical analysis and experimental result that describes high-efficiency, correctness, security and robust cheating resistance of the proposed protocol

Diagnosis of cervical lesion by colposcopy, VIA, pap smear tests, and their correlation with histopathology in a tertiary level laboratory in Chattogram, Bangladesh

Background: Cervical carcinoma is one of the most common causes of mortality among women. This mortality rate can be reduced by early detection of cervical neoplasm by different screening tests. The main objective of this study was to diagnose cervical diseases by colposcopy, by pap smears for cytological examination as well as correlate these findings as screening tests with histopathological diagnosis. Methods: In this cross-sectional observational study, total 143 cases were included. History was taken and clinical examination was done. Colposcopy and VIA test was done, pap smear sample was collected and reporting was made. Cytological findings were correlated with histopathology. Results: Mean age of the study cases was 41.2±11.5 years. VIA test was positive in 98 study cases (68.5%). On colposcopy, most of the cases show neoplastic proliferation (80 cases, 55.9%). Among them, most cases were diagnosed as cervical intraepithelial neoplasia-I (CIN-I). Sixty-three (63) cases (44.1%) were non-neoplastic. Most of the biopsies was diagnosed histopathologically as cervical intraepithelial neoplasia-I (CIN-I) (20 cases, 14.0%). Association of colposcopy findings with histopathological diagnosis was done which was significant. Sensitivity of diagnosis of cervical malignancy by colposcopy was 33.33% and specificity was 98.57%. Conclusions: The study provides good cyto-histopathology correlation in detecting different cervical lesions and malignancy with colposcopy. Although colposcopy sensitivity was low but it can be increased by adequate training and avoiding technical errors. Bethesda system is strongly recommended for adequacy of sampling to minimize inconsistency. Early and regular screening should be advised for reduction of mortality rates from cervical carcinoma

Assessment Of Pond Water Quality Of Thakurgaon Sadar Upazila For Fish Production

During dry season, physico-chemical properties of waters from 30 ponds of Thakugaon Sadar Upazila, Thakurgaon, Bangladesh were analyzed for its quality and suitability for aquaculture. The variation in the physico-chemical parameters of the aquaculture ponds above or below standard values has potential effects on the health and productivity of aquaculture. Overall, we found that the pond water were acidic to neutral in nature (pH varied from 6.0 to 7.2) and could be suitable for aquaculture. The dissolved oxygen (DO) concentration was suitable for fish production but more DO level should be present for all aquatic life especially for fish production. Chemical oxygen demands (COD) of all pond waters were within the permissible limits for fish production. The temperature values were remained within the standard values in all the aquaculture ponds. Pond water samples contained Ca2+, Mg2+ and Na+ as the dominant cations and HCO3- and Cl- were the dominant anions. All samples were within soft class regarding hardness. Based on Zn2+, Mn2+, Fe3+, SO42-, NO3- and Cl- all pond water samples were within the safe limit for fish production during dry period. Int. J. Agril. Res. Innov. & Tech. 3 (1): 29-34, June, 2013 DOI: http://dx.doi.org/10.3329/ijarit.v3i1.1605

EXCESS MOLAR VOLUMES AND DEVIATIONS IN VISCOSITY OF THE BINARY MIXTURES OF 1-PENTANOL + AROMATIC HYDROCARBONS AT T = 298.15 K

The densities, ρ and viscosities, η of pure 1-Pentanol, toluene, ethylbenzene, propylbenzene, and those of their binary mixtures covering the whole composition range have been measured at 298.15 K under atmospheric pressure. Excess molar volumes, E Vm , partial molar volumes, Vi , deviations in viscosity, ∆η and excess free energies of activation, E G# ∆, have also been calculated from the ρ and η data. To obtain correlation coefficients and standard deviations E Vm , ∆η and E G# ∆were fitted to Redlich–Kister type function in terms of mole fraction. In the whole range of composition, E Vm were found to be positive for 1-pentanol + ethylbenzene and + propylbenzene, but 1-pentanol + toluene system showed negative E Vm in the alcohol-rich region for. The ∆η and E G# ∆ values were the negative for all the binary mixtures

EXCESS MOLAR VOLUMES AND DEVIATIONS IN VISCOSITY OF THE BINARY MIXTURES OF 1-PENTANOL + AROMATIC HYDROCARBONS AT T = 298.15 K

The densities, ρ and viscosities, η of pure 1-Pentanol, toluene, ethylbenzene, propylbenzene, and those of their binary mixtures covering the whole composition range have been measured at 298.15 K under atmospheric pressure. Excess molar volumes, E Vm , partial molar volumes, Vi , deviations in viscosity, ∆η and excess free energies of activation, E G# ∆, have also been calculated from the ρ and η data. To obtain correlation coefficients and standard deviations E Vm , ∆η and E G# ∆were fitted to Redlich–Kister type function in terms of mole fraction. In the whole range of composition, E Vm were found to be positive for 1-pentanol + ethylbenzene and + propylbenzene, but 1-pentanol + toluene system showed negative E Vm in the alcohol-rich region for. The ∆η and E G# ∆ values were the negative for all the binary mixtures

How do parents' depression and anxiety, and infants' negative temperament relate to parent–infant face-to-face interactions?

The present study investigated the associations of mothers' and fathers' lifetime depression and anxiety symptoms, and of infants' negative temperament with parents' and infants' gaze, facial expressions of emotion, and synchrony. We observed infants' (age between 3.5 and 5.5 months, N = 101) and parents' gaze and facial expressions during 4-min naturalistic face-to-face interactions. Parents' lifetime symptoms of depression and anxiety were assessed with clinical interviews, and infants' negative temperament was measured with standardized observations. Parents with more depressive symptoms and their infants expressed less positive and more neutral affect. Parents' lifetime anxiety symptoms were not significantly related to parents' expressions of affect, while they were linked to longer durations of gaze to parent, and to more positive and negative affect in infants. Parents' lifetime depression or anxiety was not related to synchrony. Infants' temperament did not predict infants' or parents' interactive behavior. The study reveals that more depression symptoms in parents are linked to more neutral affect from parents and from infants during face-to-face interactions, while parents' anxiety symptoms are related to more attention to parent and less neutral affect from infants (but not from parents)

The relation between early behavioural inhibition and later social anxiety, independent of attentional biases to threat

Early behavioural inhibition, a temperamental characteristic defined by fearful, overly-sensitive, avoidant, or withdrawn reactions to the unknown, is a predictor of later social anxiety. However, not all behaviourally inhibited children develop anxiety problems, and attentional bias to threat has been proposed to moderate the relation between behavioural inhibition and anxiety. The current study aimed to further specify the relation between early behavioural inhibition and later social anxiety by testing this potentially moderating role of childhood attentional bias to threat. Behavioural inhibition was assessed during toddlerhood (age 2.5 years) using laboratory observations of children’s behaviours in response to unknown objects and situations. When children were 7.5 years old, attentional bias was measured in 86 children (46 girls) using both a visual probe task and a visual search task with angry and happy faces. Child social anxiety was measured using questionnaires completed by the child and both parents, and clinical interviews conducted with both parents. Our results showed that while early behavioural inhibition was related to later social anxiety, there was no evidence for a moderation of this relation by attentional bias, suggesting that the relation between early fearful temperament and later social anxiety holds across children, independent of their attentional biases.</p