În acest articol prezentăm câteva metode şi tehnici noi, foarte practice, pentru calculul unor valori agregate în structuri şi baze de date multidimensionale. De asemenea, considerăm şi problema determinării eficiente a celei de-a k-a valori minime din mulţimi definite prin diverse constrângeri. A treia contribuţie a articolului este reprezentată de câteva extensii şi aplicaţii ale unor problem...

Incidental ingestion of household dust is an important arsenic (As) exposure pathway for children. However, compared to soils, assessment of As relative bioavailability (RBA) in household dust is limited. In this study, As-RBA in 12 household dust samples (7–38 mg kg(–1)) was measured using an in vivo mouse model and compared to As bioaccessibility determined using 4 assays [Solubility Bioacces...

Due to the sink node crucial position, its location privacy is becoming one of the major issues in wireless sensor networks (WSNs) which requires ultimate protection. Particularly, the WSNs successfulness is endanger as the wireless transmission nodes are susceptive to illicit tracing and detection. While privacy of the message can be ensured through encryption content, this paper formalizes a ...

The paper presents the results of the qualitative and quantitative determination of scopoletin (SLT) in Physalis alkekengi and Solanum dulcamara (Solanaceae) by highperformance liquid chromatography tandem mass spectrometry (HPLC/MS). The plant samples were harvested around Iasi on July 2007, July 2008, August-September 2009. Scopoletin was extracted from dried leaves by two methods: with metha...

Department of Chemistry, Islamic Azad University, Qom Branch, Qom, Iran 2 Department of Chemistry, Teacher Training University, 15614, Tehran, Iran 3 Department of Chemistry, Yasouj University, Yasouj, Iran 4 Institute of Materials Chemistry, Vienna University of Technology, Vienna, Austria 5 Department of Chemistry, Imam Hossein University, Tehran, Iran 6 Department of Chemistry, Razi Universi...

1 Department of Mathematics, Faculty of Basic Sciences, University of Shahrekord, Shahrekord 88186-34141, Iran 2 Department of Mathematics, School of Science, Razi University, Kermanshah 67149, Iran 3 Department of Mathematics, College of Arts, Social Sciences and Celtic Studies, National University of Ireland, Galway, Ireland 4 Department of Mathematical Sciences, College of Science, Florida I...

In this paper, we present a task scheduling heuristic, based on a parallel genetic algorithm (PGA). The algorithm schedules parallel programs, represented as directed acyclic graphs (DAGs), onto multi-processor systems with dynamic interconnection networks (DIN). It combines PGA with list scheduling approach and takes into account inter-processor communication cost, link contention in the DIN a...