The demand for live and interactive multimedia services over the Internet raises questions on how well the Internet Protocol (IP)’s best-effort effort service can be adapted to provide adequate end-to-end quality of service (QoS) for the users. Although the Internet community has developed two different IP-based QoS architectures, neither has been widely deployed. Overlay networks are seen as a...

Recombination in Hepatitis C virus (HCV) is considered to be rare. In this study, we performed a phylogenetic analysis of 1278 full-length HCV genome sequences to identify potential recombination events. Nine inter-genotype recombinants were identified, all of which have been previously reported. This confirms the rarity of inter-genotype HCV recombinants. The analysis also identified five inte...

This paper is concerned with the development of a methodology for object-oriented software development. The intention is to support effective use of a formal model for specifying and reasoning during the requirement analysis and design of a software development process. The overall purpose is to enhance the application of the Unified Modeling Language (UML) with a formal semantics in the Ration...

Change detection (CD) is an essential earth observation technique. It captures the dynamic information of land objects. With rise deep learning, convolutional neural networks (CNN) have shown great potential in CD. However, current CNN models introduce backbone architectures that lose detailed during learning. Moreover, are heavy parameters, which prevents their deployment on edge devices such ...

We study unirationality of a Del Pezzo surface degree two over given (non algebraically closed) field, under the assumption that it admits at least one rational double point an algebraic closure base field. As corollaries our main results, we find finite is unirational if cardinality field greater than or equal to nine and also infinite which not necessarily perfect, only points are Zariski dense

برای دستیابی به مزیت رقابتی در شرایط عدم‌­اطمینان که آن تغییر ضروری است، یکی از چالش‌های بزرگ سازمان‌ها کاهش ریسک طریق ایجاد زنجیره‌های تأمین تاب‌آور است. تاب‌آوری زنجیره ‌تأمین توانایی مقابله با اختلال اشاره دارد یک رویداد غیرقابل‌پیش‌بینی بوده و دارای منابع داخلی خارجی مختلفی ازجمله بلایای طبیعی ریسک‌های عملیاتی پژوهش حاضر شبیه‌سازی توسط نرم‌افزار ارنا زنجیره‌ سنگ ساختمانی «کارخانه سنگبری آسم...

Environmental DNA metabarcoding is a powerful tool for studying biodiversity. However, bioinformatic approaches need to adjust the diversity of taxonomic compartments targeted as well each barcode gene specificities. We built and tested pipeline based on read correction with DADA2 allowing analysing data from prokaryotic (16S) eukaryotic (18S, COI) life compartments. implemented option cluster ...