نتایج جستجو برای: shear locking

تعداد نتایج: 83887  

2007
D. Jutla P. Bodorik

This work investigates the effect of the explicit inclusion of queueing delays due to locking overhead in a performance study of a two phase locking concurrency control method. A mean value analysis is used to calculate the system's performance measures, response time and throughput. It is found that the locking overhead's contribution to delay depends largely on the degree of page faulting act...

2017
Jingzhi Zhang Huihua Liu Yunqiu Wu Chenxi Zhao Kai Kang

An ultra-wide locking range transformer-based injection-locked frequency divider (ILFD) is presented. By making use of a 4-order transformer-based resonator and an inductive gain peaking technique, the proposed ILFD can achieve high performance in terms of wide locking range and low power consumption. Fabricated in a standard 65nm CMOS process with a core area of 0.18mm, the ILFD measures a loc...

2001
David Chen Chengzheng Sun

Real-time collaborative editing systems are distributed groupware systems that allow multiple users to edit the same document at the same t ime from multiple sites. A specific type of collaborative editing system is the object-based collaborative graphics editing system. f i a ditionally, locking has been used as the major concurrency control techniques in this type of system. This paper examin...

Journal: :IEEE Trans. Parallel Distrib. Syst. 2002
Chengzheng Sun

Locking is a standard technique in distributed computing and database systems used to ensure data integrity by prohibiting concurrent conflicting updates on shared data objects. Internet-based collaborative systems are a special class of distributed applications which support human-to-human interaction and collaboration over the Internet. In this paper, a novel optional and responsive fine-grai...

2012
B. Grawe T. Le S. Williamson A. Archdeacon L. Zardiackas

OBJECTIVES We aimed to further evaluate the biomechanical characteristics of two locking screws versus three standard bicortical screws in synthetic models of normal and osteoporotic bone. METHODS Synthetic tubular bone models representing normal bone density and osteoporotic bone density were used. Artificial fracture gaps of 1 cm were created in each specimen before fixation with one of two...

2010
Kiarash Khajavi Arthur T Lee Derek P Lindsey Philipp Leucht Michael J Bellino Nicholas J Giori

BACKGROUND The objective of this study was to determine whether one can achieve stable fixation of a two column (transverse) acetabular fracture by only fixing a single column with a locking plate and unicortical locking screws. We hypothesized that a locking plate applied to the anterior column of a transverse acetabular fracture would create a construct that is more rigid than a non-locking p...

2015
Jarret M Woodmass Graeme Matthewson Yohei Ono Aaron J Bois Richard S Boorman Ian KY Lo Gail M Thornton

PURPOSE The purpose of this study was to evaluate the mechanical performance of different suture locking mechanisms including: i) interference fit between the anchor and the bone (eg, 4.5 mm PushLock, 5.5 mm SwiveLock), ii) internal locking mechanism within the anchor itself (eg, 5.5 mm SpeedScrew), or iii) a combination of interference fit and internal locking (eg, 4.5 mm MultiFIX P, 5.5 mm Mu...

2018
Donald A Belcher Julia A Ju Jin Hyen Baek Ayla Yalamanoglu Paul W Buehler Daniele M Gilkes Andre F Palmer

A major constraint in the treatment of cancer is inadequate oxygenation of the tumor mass, which can reduce chemotherapeutic efficacy. We hypothesize that polymerized human hemoglobin (PolyhHb) can be transfused into the systemic circulation to increase solid tumor oxygenation, and improve chemotherapeutic outcomes. By locking PolyhHb in the relaxed (R) quaternary state, oxygen (O2) offloading ...

2014

A three-dimensional multiscale model has been developed and used to analyze the evolutions of microstructural attributes and hydraulic properties inside dilatant shear bands. In the proposed multiscale coupled scheme, we establish links between the discrete element method, which explicitly replicates granular motion of individual particles, and a fi nite element continuum model, which captures ...

2005
Hubertus Franke Rusty Russell Matthew Kirkwood

Fast userlevel locking is an alternative locking mechanism to the typically heavy weight kernel approaches such as fcntl locking and System V semaphores. Here, multiple processes communicate locking state through shared memory regions and atomic operations. Kernel involvement is only necessary when there is contention on a lock, in order to perform queueing and scheduling functions. In this pap...

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