The Erratic Behavior of Lesions in Burnt Bone

2015 ◽  
Vol 60 (5) ◽  
pp. 1290-1294 ◽  
Author(s):  
Federica Collini ◽  
Alberto Amadasi ◽  
Alessandra Mazzucchi ◽  
Davide Porta ◽  
Valeria Luisa Regazzola ◽  
...  
Keyword(s):  
Erratic Behavior ◽  
Burnt Bone

scholarly journals Autonomous Decision-Making While Drilling

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 969
Author(s):  
Eric Cayeux ◽  
Benoît Daireaux ◽  
Adrian Ambrus ◽  
Rodica Mihai ◽  
Liv Carlsen
Keyword(s):  
Decision Making ◽  
Internal State ◽  
Drilling Process ◽  
Autonomous Decision ◽  
Internal States ◽  
Markov Decision ◽  
Drilling Operations ◽  
Drilling System ◽  
Drilling Conditions ◽  
Erratic Behavior

The drilling process is complex because unexpected situations may occur at any time. Furthermore, the drilling system is extremely long and slender, therefore prone to vibrations and often being dominated by long transient periods. Adding the fact that measurements are not well distributed along the drilling system, with the majority of real-time measurements only available at the top side and having only access to very sparse data from downhole, the drilling process is poorly observed therefore making it difficult to use standard control methods. Therefore, to achieve completely autonomous drilling operations, it is necessary to utilize a method that is capable of estimating the internal state of the drilling system from parsimonious information while being able to make decisions that will keep the operation safe but effective. A solution enabling autonomous decision-making while drilling has been developed. It relies on an optimization of the time to reach the section total depth (TD). The estimated time to reach the section TD is decomposed into the effective time spent in conducting the drilling operation and the likely time lost to solve unexpected drilling events. This optimization problem is solved by using a Markov decision process method. Several example scenarios have been run in a virtual rig environment to test the validity of the concept. It is found that the system is capable to adapt itself to various drilling conditions, as for example being aggressive when the operation runs smoothly and the estimated uncertainty of the internal states is low, but also more cautious when the downhole drilling conditions deteriorate or when observations tend to indicate more erratic behavior, which is often observed prior to a drilling event.

scholarly journals Survival of planets around shrinking stellar binaries

2015 ◽  
Vol 112 (30) ◽  
pp. 9264-9269 ◽  
Author(s):  
Diego J. Muñoz ◽  
Dong Lai
Keyword(s):  
Binary Stars ◽  
Orbital Evolution ◽  
Eclipsing Binaries ◽  
Target List ◽  
Tidal Dissipation ◽  
Compact Binaries ◽  
Kepler Mission ◽  
Orbital Decay ◽  
Erratic Behavior ◽  
Circumbinary Planets

The discovery of transiting circumbinary planets by the Kepler mission suggests that planets can form efficiently around binary stars. None of the stellar binaries currently known to host planets has a period shorter than 7 d, despite the large number of eclipsing binaries found in the Kepler target list with periods shorter than a few days. These compact binaries are believed to have evolved from wider orbits into their current configurations via the so-called Lidov–Kozai migration mechanism, in which gravitational perturbations from a distant tertiary companion induce large-amplitude eccentricity oscillations in the binary, followed by orbital decay and circularization due to tidal dissipation in the stars. Here we explore the orbital evolution of planets around binaries undergoing orbital decay by this mechanism. We show that planets may survive and become misaligned from their host binary, or may develop erratic behavior in eccentricity, resulting in their consumption by the stars or ejection from the system as the binary decays. Our results suggest that circumbinary planets around compact binaries could still exist, and we offer predictions as to what their orbital configurations should be like.

Melancholic Madness and the Puritans

1973 ◽  
Vol 66 (3) ◽  
pp. 293-309 ◽  
Author(s):  
John F. Sena
Keyword(s):  
Eighteenth Century ◽  
Seventeenth Century ◽  
Emotional Disorders ◽  
Medical Theory ◽  
Erratic Behavior ◽  
Established Church

Since the resurgence of interest in the Augustan period, the myriad of sixteenth- seventeenth- and eighteenth-century literary attacks on the Puritans have been enumerated, catalogued, analyzed, and elucidated. Although the Puritans were accused of a seemingly endless series of malefactions, most of the anti-sectarian assaults, we have been told, charged them with ignorance — the inability to see the value of the established church — or hypocrisy — the desire to use religion to advance political ambitions, secure riches, or satisfy libidinous interests. By mid-seventeenth century, however, a change occurred in the nature of the attacks which has not been adequately discussed. Instead of questioning the sincerity of the Puritans' religious countenance or ascribing the usual peccadillos to them, Puritan traducers charged the sectaries with insanity. Although societies in all ages have protected themselves from unpopular and dissenting opinions by declaring them products of a deranged mind, anti-sectarians in the Restoration and eighteenth century established a rationale for their charges of madness by employing contemporary medical theory to demonstrate that the Puritans suffered from mental and emotional disorders as a result of natural physical causes. Enthusiasts were seen as splenetic sufferers, and their erratic behavior and religious delusions were explained as the inevitable consequence of melancholic vapors.

The Bone

1985 ◽  
Vol 51 (S2) ◽  
pp. 46-72
Author(s):  
Sue Browne
Keyword(s):  
Human Remains ◽  
The Other ◽  
Eastern Side ◽  
Worked Bone ◽  
Post Hole ◽  
Burnt Bone

In all, 1065 fragments of bone were recovered from trench B. The bulk of the bone (868 fragments: 81%) came from the ditch; 121 fragments came from pits and scoops, 74 fragments from post holes and 1 fragment from a layer in the ‘working area’. Four of the pits and three of the post holes are in the ‘working area’ and they contained a total of 104 fragments of bone; the five post holes interpreted as a four-post structure contained 40 fragments of bone. With the exception of post holes 96 and 117, which contained one and two fragments of bone respectively, no bone was recovered from contexts east of the ditch running north-south at the eastern side of the site (39 and 78), nor from those contexts lying between its terminals. Two fragments of worked bone were recovered, one from context 5 in the ditch and one from post hole 75, which also contained one of the bird bones; the other bird bone came from context 41 in the ditch. The human remains and the dog bones were recovered exclusively from the ditch. The distribution of the bones of the larger domesticates and pig indicates consistency and continuity in disposal practices: 95.6% of the identified horse bones, 92.5% of the identified cattle bones and 80.5% of the identified pig bones w*re recovered from the ditch. Only the caprovid bones were spread more evenly over the site: 66.7% came from the ditch, 26.1% from the pits and scoops and 7.2% from post holes. Fragments of burnt bone were recovered from contexts 3 (ditch), 16 (post hole) and 107 (pit). Butchered and gnawed bones were distributed without any particular pattern in all three types of bone-bearing context.

Inflammatory and Noninflammatory Synovial Fluids Exhibit New and Distinct Tribological Endotypes

2020 ◽  
Vol 142 (11) ◽  
Author(s):  
Elizabeth Feeney ◽  
Devis Galesso ◽  
Cynthia Secchieri ◽  
Francesca Oliviero ◽  
Roberta Ramonda ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Hyaluronic Acid ◽  
Synovial Fluid ◽  
Inflammatory Arthritis ◽  
Tribological Behavior ◽  
Friction Coefficients ◽  
Low Concentrations ◽  
Synovial Fluids ◽  
Erratic Behavior ◽  
Lubricating Properties

Abstract Inferior synovial lubrication is a hallmark of osteoarthritis (OA), and synovial fluid (SF) lubrication and composition are variable among OA patients. Hyaluronic acid (HA) viscosupplementation is a widely used therapy for improving SF viscoelasticity and lubrication, but it is unclear how the effectiveness of HA viscosupplements varies with arthritic endotype. The objective of this study was to investigate the effects of the HA viscosupplement, Hymovis®, on the lubricating properties of diseased SF from patients with noninflammatory OA and inflammatory arthritis (IA). The composition (cytokine, HA, and lubricin concentrations) of the SF was measured as well as the mechanical properties (rheology, tribology) of the SF alone and in a 1:1 mixture with the HA viscosupplement. Using rotational rheometry, no difference in SF viscosity was detected between disease types, and the addition of HA significantly increased all fluids' viscosities. In noninflammatory OA SF, friction coefficients followed a typical Stribeck pattern, and their magnitude was decreased by the addition of HA. While some of the IA SF also showed typical Stribeck behavior, a subset showed more erratic behavior with highly variable and larger friction coefficients. Interestingly, this aberrant behavior was not eliminated by the addition of HA, and it was associated with low concentrations of lubricin. Aberrant SF exhibited significantly lower effective viscosities compared to noninflammatory OA and IA SF with typical tribological behavior. Collectively, these results suggest that different endotypes of arthritis exist with respect to lubrication, which may impact the effectiveness of HA viscosupplements in reducing friction.

Determining the human origin of fragments of burnt bone: a comparative study of histological, immunological and DNA techniques

1999 ◽  
Vol 102 (2-3) ◽  
pp. 181-191 ◽  
Author(s):  
C. Cattaneo ◽  
S. DiMartino ◽  
S. Scali ◽  
O.E. Craig ◽  
M. Grandi ◽  
...  
Keyword(s):  
Comparative Study ◽  
Human Origin ◽  
Burnt Bone

Automated Reengineering of Industrial Service-Based Systems

2016 ◽  
Author(s):  
Carlos Agostinho ◽  
Carlos Raposo ◽  
Ricardo Jardim-Goncalves
Keyword(s):  
Information Systems ◽  
Web Service ◽  
Business Processes ◽  
Information Modeling ◽  
Industrial Service ◽  
Complex Relationships ◽  
Service Environments ◽  
Static Nature ◽  
Erratic Behavior ◽  
Holistic Manner

Complex systems are not of static nature. Most are governed by a particular set of laws and behave accordingly to a certain range of expected inputs and variables, but they can also evolve in response to unforeseen stimulus. The same principle can be applied to industrial information systems. Larger systems such as an entire company or a network of companies may be divided into further subsystems, including information systems, each behaving autonomously but is still under influence of the others, interacting with them in a holistic manner. This paper explores this relationship and proposes a conceptual solution to the strain of sustaining interoperability in complex service-based networks from the domain of manufacturing. To such effect, and in order to tackle the complex relationships and dependencies implicit in web-service environments, information modeling is used, allowing for the optimization of several service engineering activities and enterprise business processes while maximizing the efficiency of system’s interactions. Hence, service modeling and orchestration is here suggested as a baseline to network monitoring, and as a possible approach to automatically handle and recover from erratic behavior, providing systems with adaptive web services and self-organizing capabilities.

USES OF THE GAMMA‐RAY SPECTROMETER IN MINERAL EXPLORATION

Geophysics ◽  
1960 ◽  
Vol 25 (5) ◽  
pp. 1054-1076 ◽  
Author(s):  
John L. Mero
Keyword(s):  
Gamma Ray ◽  
Mineral Exploration ◽  
Well Logs ◽  
Radioactive Tracers ◽  
Correlation Studies ◽  
Gamma Ray Spectrometer ◽  
Gamma Ray Spectroscopy ◽  
Potential Applications ◽  
Rock Analysis ◽  
Erratic Behavior

Gamma‐ray spectroscopy offers a rapid and reliable radiometric method of analysis of uranium and/or thorium ores. Methods of ore analysis are described and experimental results are presented. The uranium‐thorium ratios of rocks, which are important in strata recognition and correlation studies, can be determined directly by gamma‐ray spectroscopy without the necessity of making individual uranium or thorium assays. Analysis of potash ores is facilitated with a gamma‐ray spectrometer. Erratic behavior of gamma‐ray well logs can often be resolved by studying the gamma‐ray spectra of these logs. Neutron‐activation, followed by gamma‐ray spectral analysis, of common earth materials offers a method of borehole rock analysis for elements such as calcium, hydrogen, chlorine, sulphur and magnesium. Data in studies employing radioactive tracers can often be enhanced through use of a gamma‐ray spectrometer. Other present and potential applications of the gamma‐ray spectrometer in mineral exploration are also discussed.

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