This paper introduces an inequality on vectors in $mathbb{R}^n$ which compares vectors in $mathbb{R}^n$ based on the $p$-norm of their projections on $mathbb{R}^k$ ($kleq n$). For $p>0$, we say $x$ is $d$-projectionally less than or equal to $y$ with respect to $p$-norm if $sum_{i=1}^kvert x_ivert^p$ is less than or equal to $ sum_{i=1}^kvert y_ivert^p$, for every $dleq kleq n$. For...

for vectors x, y ∈ rn, it is said that x is left matrix majorizedby y if for some row stochastic matrix r; x = ry. the relationx ∼` y, is defined as follows: x ∼` y if and only if x is leftmatrix majorized by y and y is left matrix majorized by x. alinear operator t : rp → rn is said to be a linear preserver ofa given relation ≺ if x ≺ y on rp implies that t x ≺ ty onrn. the linear preservers o...

packaging is one of the most important parts of the food industry that is related to food security and it acts as a preserver that maintains the health of its content. product's packaging is the only mean of communication that absorb the attention of consumers in the store among other choices. the packaging is referred to as the silent salesman which means that it sells the product on retail sh...

how to cite this article: hakim shoushtari m, ghalebandi mf, tavasoli a, pourshams m. kleine-levin syndrome in an 8 year old girl with autistic disorder does autism account a primary or secondary cause? iran j child neurol. autumn 2015;9(4):61-64. abstract objective kleine–levin syndrome (kls) is a rare disorder with an unknown etiology. autism spectrum disorder is characterized by various degr...

background: it is believed that environmental and genetic factors may be responsible for autism. methylenetetrahydrofolate reductase (mthfr) and its gene polymorphisms have been shown to be implicated as risk factors in autism. objectives: to analyze mthfr c677t polymorphism (rs1801133) in autistic patients. materials and methods: this study was carried out in 2014 and 2015 in northern iran. on...

background: classroom behaviors are disturbed in autistic students because of their repetitive, restlessness, and disruptive behaviors. this study aimed to examine the impacts of sitting on a ball, cushion, and/or common chair on classroom behavior of four students with autism spectrum disorder (asd). methods : four children with autism participated in this single-subject study. students’ behav...

continuous four hours eeg (electroencephalogram) recordings and its power spectrum analysis using fast fourier transform (fft) in urethane anesthetized male charles foster rats were performed in two groups: open brain injury and p-cpa (para-chlorophenylalanine) pretreated before brain injury, respectively, and compared with the eeg power spectrum of control rats. the eeg power spectrum analysis...

objective: children with autism have sitting and on-task behavior problems in class. therefore, the effects of three alternative classroom-seating devices such as regular classroom chairs, therapy balls, and air cushions were examined on students’ classroom behavior. material and method: fifteen autistic students participated in this a-b-a-c multiple treatments, semi-experimental study. student...

conclusions according to our results, blatem-116 was the most frequent isolated esbl gene among the p. aeruginosa strains isolated from patients. results ciprofloxacin and piperacillin were the most efficient antipseudomonal agents. the results disclosed that 19 (16.37%) of the isolates were multidrug resistant and 8 (6.89%) were esbl-positive. of the 116 isolates, 30 (25.86%) were resistant to...