ali havasi

Secret sharing is the process of distributing a secret among n shareholders, in such a way that only a subset of them can recover the secret, while unauthorized subsets, referred to as dishonest shareholders, cannot access the secret. During the secret reconstruction phase, when shareholders present their shares, a dishonest shareholder or shareholders can always obtain the secret exclusively by presenting fake shares, thus leaving the honest shareholders with nothing but a fake secret. Detecting cheating is crucial for achieving a fair secret reconstruction. In this paper, it has been proposed a cheating-detecting secret sharing scheme that utilizes polynomial coefficients for cheat detection in secret reconstruction. It is leveraged the invertibility property of polynomial coefficients in the z_q field to detect cheat and employ relationships that follow a linear equation.

This study examines the social and cultural structure of drug offenses in Ahwaz municipal areas using GIS.
The population of the study consisted of drug offenders in Correction and Rehabilitation Center of Ahwaz in 2013. Statistical tests and graphs, including Mean Center test, Standard Deviation Ellipse, Kernel Density Estimation were used in this study.
The most important centers of drug crime are in the same border with informal settlement areas, such as Kut Abdullah, Lashkar Abad, and Khashayar (urban areas 5 and 6 of Ahwaz city). In addition, there is a direct relationship between illiteracy rate & population density and crime rate.
Discussion and Spatial analysis of geographic crime and punishment can act as a means for security and safety policy making in the fight against drugs.

This study aimed to determine the epidemiology of energetic substances as well as the knowledge of the students in this regard and effective and effective factors on tendency to abuse the substances. Theoretical frame work in this study included Merton’s theory of strain and discriminative association of Sutherland. A survey method of research was used in this study. The applied instrument was a hand-made questionnaire. Statistical community encompassed all high school students of Khorram Abad. Among the community 135 students who abused the substances were selected via a snowball sampling method. Dependent variable in this study was energetic substance abuse which its relationship with socio-economic status, anomie, social isolation feeling, and relative deprivation, interaction with abuser friends, and gender as independent variables was assessed. The collected data analyzed with applying descriptive, as well as inferential statistics such as variance analysis, regression, chi square, factor analysis and correlation coefficient. Findings showed 13.369 and 4.26 percentage epidemic of the problem among male and female students respectively. There was also a significant, direct relationship between socio-economic status, Anomie, social isolation feeling, relative deprivation, interaction with abuser friends and gender.

There are researches to point epidemiology of addiction to drugs, chemical and solvent abuse in elderlies. Drug and Solvent abuse is considered as one of these addictions. This study was point to chemical abuse among elderly population of Ahwaz an Iranian city during year of 2007.Methods & Materials: Research method is description-exploration with use to questionnaire, clinical interview and survey of medical and clinical reports among volunteer clients. Statistical community is all elderly population at one of citizen region in Ahwaz city (Iran). Seventy four dossiers were considered via random sampling; with 30 Elder volunteer clients been interviewed and replied to Elderly Drug Abuse Questionnaire (EDAQ).

Signification of hypothesis with X2 test was considered significant relation between age and addiction record variables to solvent abuse; this relation is very significant to second value of drug's derivations such as Morphine, Codeine, Tebaine and Heroine. Interview showed psychological dependent due to appeal them to solvent abuse. Kind of abuse among elderly was snuffing and abuse of medicine drugs which were been recommended to them by their physician.

Although study of solvent and chemical abuse's epidemiology pointed less average of this addiction in samples, should be considered important and notice in studies. Finally, researchers were suggested to avoid of this new drug abuse and so to control behavior and interaction of these addicted and their behavior development; it's better to control on distribution of solvent and glue materials and recommending of medicine drug via physicians visiting exderlies.