In a multiprogrammed multiprocessor system, existing lock based mechanisms hold the lock for a task during a context-switch. In this case, the time that a task holds a lock can be greatly increased, resulting in a wasted lock utilization and an increase in the average response time for tasks using the lock. An option for avoiding this problem is to release the lock held by a task during a conte...

Two traditional approaches exist for a task that is blocked on a global resource; a task either performs a non-preemptive busy wait, i.e., spins, or suspends and releases the processor. Previously, we have shown that both approaches can be viewed as spinning either at the highest priority (HP) or at the lowest priority on the processor (LP), respectively. Based on this view, previously we have ...

The purpose of this study is to analyze the impacts good corporate Governance during Covid -19 era on dividend payout ratio policy in Indonesia. Moreover, Covid- 19 has urged higher management such US boards ofDirectors deal with all difficulties and uncertainties business situation. During Covid-19 era, Energy faced big challenges due lock down occurred many areas which can leads disruptive gl...

The COVID-19 pandemics have affected every aspect of the human race and world economy. disease has been contaminated in almost part India. A threat for poor standards induced premature mortality from cardiovascular respiratory diseases. Amongst huge-reaching implications continuing outbreak, a significant enhancement air quality was detected all around globe after lockdowns enforced several cit...

Providing efficient access to XML documents becomes crucial in XML database systems. More and more concurrency control protocols for XML database systems were proposed in the past few years. Being an important language for addressing data in XML documents, XPath expressions are the basis of several query languages, such as XQurey and XSLT. In this paper, we propose a lock-based concurrency cont...

Storing, querying, and updating XML documents in multi-user environments requires data processing guarded by a transactional context to assure the well-known ACID properties, particularly with regard to isolate concurrent transactions. In this paper, we introduce the taDOM tree, an extended data model which allows finegrained lock acquisition for XML documents. For this reason, we design a tail...

Logical thinking ability of secondary level school students is described in this article. The logical one the important components 21st century. Thus study aim to analyze 14-16age group lock down period. sample was chosen by using a simple random sampling technique. involves two classes which has 200participants, consisting of, 100boys and 100girls class 9and 10 South Delhi school. researcher u...