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Studies in History and Philosophy of Science Part A, 2016
Like many virtuosi in his day, the English philosopher John Locke maintained an active interest in metrology. Yet for Locke, this was no mere hobby: questions concerning measurement were also implicated in his ongoing philosophical project to develop an account of human understanding. This paper follows Locke's treatment of four problems of measurement
Peter R Anstey
exaly +3 more sources
Like many virtuosi in his day, the English philosopher John Locke maintained an active interest in metrology. Yet for Locke, this was no mere hobby: questions concerning measurement were also implicated in his ongoing philosophical project to develop an account of human understanding. This paper follows Locke's treatment of four problems of measurement
Peter R Anstey
exaly +3 more sources
Hastings Center Report, 2022
AbstractTiffany was seventeen when injury to her brain stem put her in the intensive care unit on life‐sustaining treatment and in a permanently locked‐in state—fully conscious but able to control no bodily movements other than her eye movements. As a clinical ethicist at the hospital, I was consulted by her neurologist, who had established a blink ...
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AbstractTiffany was seventeen when injury to her brain stem put her in the intensive care unit on life‐sustaining treatment and in a permanently locked‐in state—fully conscious but able to control no bodily movements other than her eye movements. As a clinical ethicist at the hospital, I was consulted by her neurologist, who had established a blink ...
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To lock, or not to lock: That is the question
Journal of Systems and Software, 2012Mechanisms to control concurrent access over project artefacts are needed to execute the software development process in an organized way. These mechanisms are implemented by concurrency control policies in version control systems that may inhibit (i.e. 'to lock') or allow (i.e., 'not to lock') parallel development.
João Gustavo Prudêncio +3 more
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iNethi: locked down but not locked out
XRDS: Crossroads, The ACM Magazine for Students, 2020A community-driven network seeks to overcome the digital divide in South African education by delivering e-learning to bandwidth-constrained learners.
André van Zyl, David Lloyd Johnson
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Journal of the ACM, 1984
The power of locking as a primitive for controlling concurrency in database systems is examined. It is accepted that the concurrent execution (or schedule) of different transactions must be serializable; that is, it must behave like a serial schedule, one in which the transactions run one at a time.
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The power of locking as a primitive for controlling concurrency in database systems is examined. It is accepted that the concurrent execution (or schedule) of different transactions must be serializable; that is, it must behave like a serial schedule, one in which the transactions run one at a time.
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Proceedings of the Great Lakes Symposium on VLSI 2017, 2017
Logic locking is an intellectual property (IP) protection technique that prevents IP piracy, reverse engineering and overbuilding attacks by the untrusted foundry or end-users. Existing logic locking techniques are all based on locking the functionality; the design/chip is nonfunctional unless the secret key has been loaded.
Muhammad Yasin +5 more
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Logic locking is an intellectual property (IP) protection technique that prevents IP piracy, reverse engineering and overbuilding attacks by the untrusted foundry or end-users. Existing logic locking techniques are all based on locking the functionality; the design/chip is nonfunctional unless the secret key has been loaded.
Muhammad Yasin +5 more
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Proceedings of the 1981 ACM SIGMOD international conference on Management of data - SIGMOD '81, 1981
This paper describes a new method for controlling data base concurrency, called precision locks (PL). The name is derived from the fact that they lock precisely the set of tuples required to guarantee data base consistency, phantoms included. This results in maximum concurrency among all tuple-level locking methods, including predicate locks.
J. R. Jordan, J. Banerjee, R. B. Batman
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This paper describes a new method for controlling data base concurrency, called precision locks (PL). The name is derived from the fact that they lock precisely the set of tuples required to guarantee data base consistency, phantoms included. This results in maximum concurrency among all tuple-level locking methods, including predicate locks.
J. R. Jordan, J. Banerjee, R. B. Batman
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ACM Transactions on Database Systems, 1994
Long-lived transactions (LLTs) hold on to database resources for relatively long periods of time, significantly delaying the completion of shorter and more common transactions. To alleviate this problem we propose an extension to two-phase locking, called altruistic locking, whereby LLTs can release their locks early.
Kenneth Salem +2 more
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Long-lived transactions (LLTs) hold on to database resources for relatively long periods of time, significantly delaying the completion of shorter and more common transactions. To alleviate this problem we propose an extension to two-phase locking, called altruistic locking, whereby LLTs can release their locks early.
Kenneth Salem +2 more
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Lock Detection in Phase-Locked Loops
SIAM Journal on Applied Mathematics, 1992The phase quadrature lock detector is used extensively to detect phase lock in phase-locked loops (PLLs). However, this lock detector's relationship to PLL closed-loop dynamics has never been established. A new theory is presented, which accomplishes this for a specified class of PLLs.
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