scholarly journals Is Turing’s Thesis the Consequence of a More General Physical Principle?

2012 ◽  
pp. 714-722
Author(s):  
Matthew P. Szudzik
Keyword(s):  
Physical Principle ◽  
General Physical

Dynamic priority rules for cyclic-type queues

1989 ◽  
Vol 21 (2) ◽  
pp. 432-450 ◽  
Author(s):  
Sid Browne ◽  
Uri Yechiali
Keyword(s):  
Control Strategies ◽  
Current System ◽  
Waiting Times ◽  
Physical Principle ◽  
Priority Rules ◽  
Dynamic Priority ◽  
Cyclic Service ◽  
Cyclic Type ◽  
General Physical ◽  
Adaptive Nature

A cyclic service system is composed of K channels (queues) and a single cyclically roving server who typically takes a positive amount of time to switch between channels. Research has previously focused on evaluating and computing performance measures (notably, waiting times) of fixed template routing schemes under three main service disciplines, the exhaustive, gated and limited service regimes.In this paper, probabilistic results are derived that allow control strategies and optimal policies to be considered for the first time. By concentrating on a new objective function, we are able to derive rules of index form amenable for direct implementation to dynamically control the system at suitably defined decision epochs. These rules utilize current system information, are of an adaptive nature, and are shown to emanate from a general physical principle.

Dynamic priority rules for cyclic-type queues

1989 ◽  
Vol 21 (02) ◽  
pp. 432-450 ◽  
Author(s):  
Sid Browne ◽  
Uri Yechiali
Keyword(s):  
Control Strategies ◽  
Current System ◽  
Waiting Times ◽  
Physical Principle ◽  
Priority Rules ◽  
Dynamic Priority ◽  
Cyclic Service ◽  
Cyclic Type ◽  
General Physical ◽  
Adaptive Nature

A cyclic service system is composed of K channels (queues) and a single cyclically roving server who typically takes a positive amount of time to switch between channels. Research has previously focused on evaluating and computing performance measures (notably, waiting times) of fixed template routing schemes under three main service disciplines, the exhaustive, gated and limited service regimes. In this paper, probabilistic results are derived that allow control strategies and optimal policies to be considered for the first time. By concentrating on a new objective function, we are able to derive rules of index form amenable for direct implementation to dynamically control the system at suitably defined decision epochs. These rules utilize current system information, are of an adaptive nature, and are shown to emanate from a general physical principle.

Presentation with Personality changes and Tinnitus to a Vascular Intervention: Rare case of Carotid Body Paraganglioma

2018 ◽  
pp. e000109
Author(s):  
Ahsan Zil-E-Ali ◽  
Zubair Ahmed ◽  
Amber Ehsan Faquih ◽  
Muhammad Ishaq ◽  
Muhammad Aadil
Keyword(s):  
Case Report ◽  
Carotid Body ◽  
Neuroendocrine Neoplasms ◽  
Vascular Surgeon ◽  
Vascular Intervention ◽  
Presenting Symptoms ◽  
Personality Changes ◽  
Tender Mass ◽  
Carotid Body Tumors ◽  
General Physical

Background: Carotid body paragangliomas are rare neuroendocrine neoplasms of chromaffin negative glomus cells. This case report explains an atypical case with unusual presentation and treatment. Case Report: A healthy smoker technician by profession was brought to the emergency room (ER) with coprolalia. The general physical exam did not reveal any information. His history revealed unilateral tinnitus and odynophagia leading to a consultation by the neurologist with head imaging. Acoustic neuroma was ruled out and the caregiver was asked to elaborate the events mentioned in the history and a psychiatric examination was done. The personality changes were evaluated by the psychiatrist that showed overlapping of delirium and depression. The patient was further examined by a vascular surgeon. After careful revisiting of the history, examination and indication of tender mass in the neck by the patient's vascular surgeon, the diagnosis of carotid body paraganglioma was made which was followed by surgical resection for treatment. Conclusion: Carotid Body Paragangliomas are very vascular structures and their manipulation in a surgery setting requires expertise. This case presented with personality changes and tinnitus, a very less likely event to occur in a carotid body tumor. The present care report, thus adds on to the literature of carotid body tumors and its presenting symptoms.

MORPHOMETRIC CHANGES OF BUCCAL EPITHELIOCYTES AND ERYTHROCYTES IN STUDENTS WITH VARIOUS LEVEL OF SOMATIC HEALTH AND GENERAL PHYSICAL HARDINESS

2018 ◽  
Vol 14 (64) ◽  
pp. 024 ◽  
Author(s):  
N. V. Gavrilova ◽  
Ya. N. Yatciv ◽  
E. I. Lapkovskyi ◽  
S. L. Popel ◽  
A. V. Synitsa ◽  
...  
Keyword(s):  
Somatic Health ◽  
General Physical
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