نتایج جستجو برای: time passing and demands

تعداد نتایج: 16995980  

Journal: :Population and Development Review 2021

Generational overlap affects the care time demands on parents and grandparents worldwide. Here, we present first global estimates of experience simultaneously having frail older young children (“sandwichness”) or grandchildren (“grandsandwichness”) for 1970–2040 cohorts, using demographic methods microsimulations. We find that sandwichness is more prevalent in Global South—for example, almost t...

2002
Ahmad Faraj Xin Yuan

In this paper, we investigate the communication characteristics of the Message Passing Interface (MPI) implementation of the NAS parallel benchmarks and study the effectiveness of compiled communication for MPI programs. Compiled communication is a technique that utilizes the compiler knowledge of both the application communication requirement and the underlying network architecture to signific...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی خواجه نصیرالدین طوسی - دانشکده علوم 1391

abstract in the present research solution of chalcopyrite in sulfuric acid in hydrometallurgy method using electrochemistry with cyclic voltammetry technique has been investigated. the value of maximum reduction peak current of copper ions represents the measure of solubility. in this research different parameters temperature, potential, potential exert time, chalcopyrite concentration, sulfur...

Journal: :International Journal of Critical Infrastructure Protection 2021

This paper presents a method that allows urban planners and municipal engineers to identify critical components of interdependent infrastructure systems. The intent the is provide means modeling impact capacity-related changes (e.g., population growth, component degradation) on city’s ability deliver resources locations. Infrastructure systems are modeled as flow networks in which capacities, d...

2015
Giuseppe Cota Riccardo Zese Elena Bellodi Fabrizio Riguzzi Evelina Lamma

Representing uncertainty in Description Logics has recently received an increasing attention because of its potential to model real world domains. EDGE for “Em over bDds for description loGics paramEter learning” is an algorithm for learning the parameters of probabilistic ontologies from data. However, the computational cost of this algorithm is high since it often takes hours to complete an e...

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