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تعداد نتایج: 16836220 فیلتر نتایج به سال:
Introduction Racism is a pervasive social problem that influences medicine, highlighting the need for interventions. One promising educational technique, referred to as edutainment, utilizes clips from television shows an instructive strategy. The objective of this study was examine acceptability edutainment around anti-racist curricula residents. Methods We conducted survey underrepresented in...
We show that public-key bit encryption schemes which support weak (i.e., compact) homomorphic evaluation of any sufficiently “sensitive” collection of functions cannot be proved message indistinguishable beyond AM ∩ coAM via general (adaptive) reductions, and beyond statistical zero-knowledge via reductions of constant query complexity. Examples of sensitive collections include parities, majori...
By considering the energy cost of messages carried by proteins as proportional to their information content we found experimental proof that proteins from all living organisms tend to have their estimated semantic content of information per unit mass, statistically, close to a constant. Thus, in the message carried by proteins −to achieve minimum energy waste− the rate of information content pe...
Children in single-parent families, particularly children born to unmarried parents, are at high risk for experiencing material hardship. Previous research based on cross-sectional data suggests that father involvement, especially visitation, diminishes hardship. This article uses longitudinal data to examine the associations between nonresident fathers' involvement with their children and mate...
This paper provides simple approximations for evaluating option prices and implied volatilities under stochastic volatility. Simple recursive formulae are derived that can easily be implemented in spreadsheets. The traditional random walk assumption, dominating in the analysis of financial markets, is compared with mean reversion which is often more relevant in commodity markets. Deterministic ...
تعداد 23 رأس گاو خشک و آبستن هلشتاین (11 رأس زایش دوم و 12 رأس سومین زایش یا بالاتر) بلوک بندی شدند تا اثر کوتاه نمودن دوره پابه ماه مورد مطالعه قرار گیرد. گاوها به طور تصادفی به دو تیمار اختصاص یافتند، تیمار شاهد(far-off 41 روز و close-up 20 روز) و تیمار آزمایشی(far-off 51 روز و close-up 10روز). تیمار شاهد طی41 روز اول دوره خشکی جیره دوره far-off را دریافت نمودند و از آن پس جیره دوره close-up ...
Efficient mass transport through porous networks is essential for achieving rapid response times in sensing applications utilizing porous materials. In this work, we show that open-ended porous membranes can overcome diffusion challenges experienced by closed-ended porous materials in a microfluidic environment. A theoretical model including both transport and reaction kinetics is employed to s...
Current climate variability is already imposing significant challenge to Ethiopia. Therefore, farmers have faced income variability in almost every production season. Problems associated with dependence on rain fed agriculture are common in Ethiopia. Smallholder farmers’ vulnerability from such income variability is also common. Over the years, a range of risk management strategies have been us...
BACKGROUND A high burden of HIV in many sub-Saharan African countries has triggered renewed interest in volunteer-based community health programmes as a way to support treatment roll-out and to deliver services to children orphaned due to HIV. This study was undertaken as an evaluation of a USAID project implemented by a consortium of 7 NGOs operating in 52 Zambian districts. We aimed to examin...
This study attempts to root out some of the causes of absence of conceptual understanding in elementary level particularly in math subject and the factors that cause this deficiency. As a body of researchers, we use a quasi-form of methodology qualitatively designed by which we give a pre-test and post-test to our participants (randomly selected teachers and students), through some open-ended q...
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