background:leisure time activity is an important life-style habit. this study aims to determine the screen time ofa nationally representative sample of iranian children and adolescents. methods:this nationwide cross-sectional study was conducted as part ofthe fourth survey of a surveillance system. the participants consisted of 14880 students, with aged range from 6 to 18 years, living in 30 pr...

ONSM is a rare tumour. It is usually separated into the primary ONSM (pONSM) (intraorbital or intracanalicular) and secondary (sONSM) (intra­ cranial). The tumour can also originate within the optic nerve sheath in the orbit or optic canal and may grow intracranially to involve various struc­ tures there. ONSM can also present in a bilateral form. pONSM represent approximately 96% of all intrao...

Forward Error Correction (FEC) is very efficient for off-line streaming with large buffering time, but real-time streaming puts hard restrictions on the buffer size making FEC inefficient for combating long link failures on single path routes. Multi-path routing, orthogonal to buffering, can however make FEC effective also for real-time streaming. For this purpose we introduce a capillary routi...

Initiation of Intercourse: Overall Influences At the follow-up interview, 28% of young men reported having initiated intercourse within a year of the first survey. In general, involvement in risky behaviors and precoital sexual activity increased the likelihood of first sex (odds ratios, 1.4 and 1.3, respectively—Table 3). The more approving that young men were of premarital sex, the more likel...

effect of different ratios of sucrose to fruit concentrate (orange and sour cherry), level of cacl2 (0-2%) and storage time (0-90 days) on physicochemical properties of candied apples were investigated using of a combined design. different quality indices such as total sugars content, ascorbic acid, color attribute (chroma) and overall acceptance were modeled and then multiobjective optimizatio...

data envelopment analysis (dea) measures the relative efficiency of decision making units (dmus) with multiple inputs and multiple outputs. dea-based malmquist productivity index measures the productivity change over time. we propose a dynamic dea model involving network structure in each period within the framework a dea. we have previously published the network dea (ndea) and the dynamic dea ...

A brief summary of the basic ideas of Topological Geometrodynamics (TGD), its recent state, its applications, and its theoretical challenges is given with a special emphasis on the most recent developments. Parton level formulation of quantum TGD as an almost topological quantum field theory using light-like 3-surfaces as fundamental objects allows a detailed understanding of generalized super-...