Success of Cloud computing requires that both customers and providers can be confident that signed Service Level Agreements (SLA) are supporting their respective business activities to their best extent. Currently used SLAs fail in providing such confidence, especially when providers outsource resources to other providers. These resource providers typically support very simple metrics, or metri...

In categorical semantics, there have traditionally been two approaches to modelling environments, one by use of finite products in cartesian closed categories, the other by use of the base categories of indexed categories with structure. Each requires modifications in order to account for environments in call-by-value programming languages. There have been two more general definitions along bot...

Synchronous fine-grained distribution is an important aspect of an interesting range of applications. Most conventional platforms for supporting computations of this type constrain their performance because of the lack of scheduling integration and coarse timing granularity imposed by the underlying operating system. This paper discusses the use of a real-time and embedded system approach to im...

Owing to the Internet’s rapid expansion and fast advancing PC technology, there are many PC-based network systems now. For increasingly many applications running over the Internet, guaranteeing QoS on these PC-based systems has become an issue of some concern. In this paper, we investigate QoS failures that occur on PC-based systems and focus on one aspect of the problem that arises from coarse...

Transactional Memory (TM) is a concurrent programming paradigm that aims to make concurrent programming easier than finegrain locking, whilst providing similar performance and scalability. Several TM systems have been made available for research purposes. However, there is a lack of a wide range of non-trivial benchmarks with which to thoroughly evaluate these TM systems. This paper introduces ...

Survivability, the ability of a system to tolerate intentional attacks or accidental failures or errors, is becoming increasingly important with the extended use of computer systems in society. While techniques such as cryptographic methods, intrusion detection, and traditional fault tolerance are currently being used to improve the survivability of such systems, new approaches are needed to he...

Wireless sensor networks (WSNs) are widely used intelligent technology in the century that provides user-oriented better solutions for real-time environment. WSNs have wide range of applications, such as, habitat monitoring, surveillance, location tracking, agriculture monitoring, structural monitoring, wild-life monitoring and water monitoring, are few examples (Akyildiz et al., 2002). Further...

در سال‌های أخیر با افزایش پیچیدگی، سطح عدم­اطمینان نیز یافته است؛ ازاین‌رو مدیریت ریسک زنجیره تأمین یکی از موضوع‌هایی است که موردتوجه سازمان‌ها قرار گرفته است. ریسک‌های موجود تأمین، وارده ناحیه تأمین‌کنندگان پژوهش حاضر به‌کارگیری مدلی به‌منظور ارزیابی صنایع غذایی شی­‌فو، به شناسایی محتمل و اتخاذ تصمیماتی راستای می­‌پردازد. مدل به‌کار‌گرفته‌شده، ترکیبی محاسبات کلامی فازی (FLC) محاسبه مقدار عوامل...

We investigate the challenges of collecting sensor measurements with mobile platforms to reveal spatio-temporal insights across our surrounding environments and enable novel data-driven algorithms. Our efforts aim to take advantage of the increasing ubiquity of mobile platforms are already equipped with sensors. Today, sensor measurements are primarily used in limited settings (outdoor GPS) wit...

در پژوهش حاضر، پس از مطالعه مبانی نظری کارت امتیازی متوازن و بررسی راه‌حل‌های ارائه‌شده برای بهبود کاربرد آن توسعه نقشه استراتژی اهداف استراتژیک که روشن‌کننده مسیر حرکت سازمان رشد دستیابی به سازمانی است، مدلی پیشنهاد می­شود تا با نگاهی نو کاربردی، روابط تعیین اولویت‌بندی شوند. این پژوهش، نقاط قوت ضعف فرصت‌ها تهدیدهای اولویت‌دار به‌عنوان معیارهای ارزیابی نظر گرفته‌ شده است؛ سپس استفاده تکنیک تاپ...