Synchronization overhead may limit the number of applications that can take advantage of a shared-memory abstraction on top of emerging network of workstation organizations. While the programmer could spend additional efforts into getting rid of such overhead by restructuring the computation, this paper focuses on a simpler approach where the overhead of lock operations is hidden through lock p...

Infections remain a devastating complication associated with vascular access devices. Removal of central venous catheter devices (CVCs) is costly, invasive and there are finite number site in young children. 1 2 This has led to several preventative strategies. Fears promoting drug resistance antibiotic lock therapy the possibility systemic side effects have use ethanol-lock (ELT). Ethanol easil...

Mutual-exclusion locks are currently the most popular mechanism for interpro-cess synchronisation, largely due to their apparent simplicity and ease of implementation. In the parallel-computing environments that are increasingly commonplace in high-performance applications, this simplicity is deceptive: mutual exclusion does not scale well with large numbers of locks and many concurrent threads...

An object is lock-free if it guarantees that in a system where multiple threads are manipulating the object, some thread will complete its operation on the object in a finite number of steps, no matter what happens to other threads. More practically, lock-free programming is a technique to achieve thread safety without the use of locks, which are the current standard. Lock-free objects (LFOs) h...

هدف: هدف این پژوهش مقایسه اثربخشی امیددرمانی و معنویت درمانی بر کیفیت زندگی، قند خون فشار زنان میانسال مبتلا به دیابت نوع دو بود. روش: حاضر نیمه آزمایشی با طرح پیش آزمون- پس پیگیری گروه گواه جامعه آماری شامل تمام 2 مراجعه کننده مرکز تحقیقات دیابت، متابولیسم غدد شهر تهران در سال 1399 بودند که ‏45 نفر شیوه نمونه‌گیری دسترس انتخاب صورت تصادفی آزمایش یک (هر 15 نفر) قرار گرفتند. ابزار پرسشنامه کوتاه...

Techniques for Constructing Efficient Lock-free Data Structures Trevor Brown Doctor of Philosophy Graduate Department of Computer Science University of Toronto 2017 Building a library of concurrent data structures is an essential way to simplify the difficult task of developing concurrent software. Lock-free data structures, in which processes can help one another to complete operations, offer ...

A novel visible multi-digit DNA keypad lock system was fabricated based on split G-quadruplex DNAzyme and silver microspheres. The final result of the keypad lock can be easily recognized by the naked eye and the number of inputs for the keypad lock can be flexibly adjusted. This molecular platform showed excellent scalability and flexibility.

The rotor-router model, also called the Propp machine, was first considered as a deterministic alternative to the random walk. It is known that the route in an undirected graph G = (V,E), where |V | = n and |E| = m, adopted by an agent controlled by the rotor-router mechanism forms eventually an Euler tour based on arcs obtained via replacing each edge in G by two arcs with opposite direction. ...

To maintain the stability trajectory of vehicles under critical driving conditions, anti lock-anti skid controllers, consisting of four anti-lock sub-controllers for each wheel and two anti-skid sub-controllers for left and right pair wheels have been separately designed. Wheel and body systems have been simulated with seven degrees of freedom to evaluate the proper functioning of controllers. ...

Background: Otogenic tetanus is a vaccine preventable disease which continues to be of public health significance. Objectives: To evaluate patients with otogenic tetanus and identify the factors that predisposes patients to it. Methodology: This is a 16-year retrospective review of all patients managed for otogenic tetanus at the Department of Otorhinolaryngology, University College Hospital, I...