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Search Results: 1 - 10 of 91660 matches for " Barry I. Campbell "
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Dementia and Depression with Ischemic Heart Disease: A Population-Based Longitudinal Study Comparing Interventional Approaches to Medical Management
W. Alan C. Mutch,Randall R. Fransoo,Barry I. Campbell,Dan G. Chateau,Monica Sirski,R. Keith Warrian
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0017457
Abstract: We compared the proportion of ischemic heart disease (IHD) patients newly diagnosed with dementia and depression across three treatment groups: percutaneous coronary intervention (PCI), coronary artery bypass grafting (CABG) and medical management alone (IHD-medical).
Ordering temperatures of Ising Spin Glasses
I. A. Campbell
Physics , 2005,
Abstract: Exploiting an approach due to Singh and Fisher I show that in the high dimension limit the ordering temperature of near neighbour Ising Spin Glasses drops linearly with the kurtosis of the interaction distribution, in excellent agreement with accurate high temperature series data of Daboul, Chang and Aharony. At lower dimensions the linear relation no longer applies strictly but the kurtosis can still be taken to be an appropriate parameter for ranking different systems. I also compare the series estimates with simulation and Migdal-Kadanoff estimates where these are available.
A Technique for Shipping Hippoboscid Puparia (Diptera)
I. Barry Tarshis
Psyche , 1956, DOI: 10.1155/1956/12909
Transporting Live Hippoboscids (Diptera)
I. Barry Tarshis
Psyche , 1954, DOI: 10.1155/1954/84084
Removing Ambiguities of IP Telephony Traffic Using Protocol Scrubbers
Bazara I. A. Barry
Journal of Systemics, Cybernetics and Informatics , 2012,
Abstract: Network intrusion detection systems (NIDSs) face the serious challenge of attacks such as insertion and evasion attacks that are caused by ambiguous network traffic. Such ambiguity comes as a result of the nature of network traffic which includes protocol implementation variations and errors alongside legitimate network traffic. Moreover, attackers can intentionally introduce further ambiguities in the traffic. Consequently, NIDSs need to be aware of these ambiguities when detection is performed and make sure to differentiate between true attacks and protocol implementation variations or errors; otherwise, detection accuracy can be affected negatively. In this paper we present the design and implementation of tools that are called protocol scrubbers whose main functionality is to remove ambiguities from network traffic before it is presented to the NIDS. The proposed protocol scrubbers are designed for session initiation and data transfer protocols in IP telephony systems. They guarantee that the traffic presented to NIDSs is unambiguous by eliminating ambiguous behaviors of protocols using well-designed protocol state machines, and walking through packet headers of protocols to make sure packets will be interpreted in the desired way by the NIDS. The experimental results shown in this paper demonstrate the good quality and applicability of the introduced scrubbers.
A phase 1 trial of nebulised heparin in acute lung injury
Barry Dixon, John D Santamaria, Duncan J Campbell
Critical Care , 2008, DOI: 10.1186/cc6894
Abstract: An open label phase 1 trial of four escalating doses of nebulised heparin was performed. A total of 16 ventilated patients with ALI were studied. The first group was administered a total of 50,000 U/day, the second group 100,000 U/day, the third group 200,000 U/day and the fourth group 400,000 U/day. Assessments of lung function included the PaO2/FiO2 ratio, lung compliance and the alveolar dead space fraction. Monitoring of anticoagulation included the activated partial thromboplastin time (APTT) and the thrombin clotting time. Bronchoalveolar lavage fluid was collected and the prothrombin fragment and tissue plasminogen activator levels were assessed. Analysis of variance was used to compare the effects of dose.No serious adverse events occurred for any dose. The changes over time for the PaO2/FiO2 ratio, lung compliance and the alveolar dead space fraction levels were similar for all doses. A trend to increased APTT and thrombin clotting time levels was present with higher doses (P = 0.09 and P = 0.1, respectively). For the highest dose, the APTT reached 64 seconds; following cessation of nebulised heparin, the APTT fell to 39 seconds (P = 0.06). In bronchoalveolar lavage samples a trend to reduced prothrombin fragment levels was present with higher doses (P = 0.1), while tissue plasminogen activator levels were similar for all doses.Administration of nebulised heparin to mechanically ventilated patients with ALI is feasible. Nebulised heparin was not associated with any serious adverse events, and at higher doses it increased APTT levels. Larger trials are required to further investigate the safety and efficacy of nebulised heparin. In these trials due consideration must be given to systemic anticoagulant effects.Australian Clinical trials registry ACTRN12606000388516.Acute lung injury (ALI) is a serious clinical problem. Estimates are that 190,600 cases of ALI develop in the United States each year, which are associated with 74,500 deaths and 3.6 million hospit
Gene Flow between Sympatric Life History Forms of Oncorhynchus mykiss Located above and below Migratory Barriers
Donald M. Van Doornik, Barry A. Berejikian, Lance A. Campbell
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0079931
Abstract: Oncorhynchus mykiss have a diverse array of life history types, and understanding the relationship among types is important for management of the species. Patterns of gene flow between sympatric freshwater resident O. mykiss, commonly known as rainbow trout, and anadromous O. mykiss, commonly known as steelhead, populations are complex and poorly understood. In this study, we attempt to determine the occurrence and pathways of gene flow and the degree of genetic similarity between sympatric resident and anadromous O. mykiss in three river systems, and investigate whether resident O. mykiss are producing anadromous offspring in these rivers, two of which have complete barriers to upstream migration. We found that the population structure of the O. mykiss in these rivers appears to be influenced more by the presence of a barrier to upstream migration than by life history type. The sex ratio of resident O. mykiss located above a barrier, and smolts captured in screw traps was significantly skewed in favor of females, whereas the reverse was true below the barriers, suggesting that male resident O. mykiss readily migrate downstream over the barrier, and that precocious male maturation may be occurring in the anadromous populations. Through paternity analyses, we also provide direct confirmation that resident O. mykiss can produce offspring that become anadromous. Most (89%) of the resident O. mykiss that produced anadromous offspring were males. Our results add to the growing body of evidence that shows that gene flow does readily occur between sympatric resident and anadromous O. mykiss life history types, and indicates that resident O. mykiss populations may be a potential repository of genes for the anadromous life history type.
Self-reported energy intake of male & female bodybuilders in the scientific literature
Lankford Brad,Campbell Bill I
Journal of the International Society of Sports Nutrition , 2012, DOI: 10.1186/1550-2783-9-s1-p19
Finite temperature phase transition in the two-dimension Randomly Coupled Ferromagnet
N. Lemke,I. A. Campbell
Physics , 1999, DOI: 10.1088/0305-4470/32/45/304
Abstract: We show using extensive simulation results and physical arguments that an Ising system on a two dimensional square lattice, having interactions of random sign between first neighbors and ferromagnetic interactions between second neighbors, presents a phase transition at a non-zero temperature.
Two dimensional Ising spin glasses with non-zero ordering temperatures
N. Lemke,I. A. Campbell
Physics , 1996, DOI: 10.1103/PhysRevLett.76.4616
Abstract: We demonstrate numerically that for Ising spins on square lattices with ferromagnetic second neighbour interactions and random near neighbour interactions, two dimensional Ising spin glass order with a non-zero freezing temperature can occur. We compare some of the physical properties of these spin glasses with those of standard spin glasses in higher dimensions.
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