scholarly journals Decoherence, Anti-Decoherence, and Fisher Information

Entropy ◽  
2021 ◽  
Vol 23 (8) ◽  
pp. 1035
Author(s):  
Andres M. Kowalski ◽  
Angelo Plastino
Keyword(s):  
Fisher Information ◽  
Uncertainty Principle ◽  
Good Description ◽  
Information Geometry ◽  
Information Measure ◽  
Quantum Decoherence ◽  
Clear Insight ◽  
Decoherence Process ◽  
Insight Into ◽  
Fisher's Information

In this work, we study quantum decoherence as reflected by the dynamics of a system that accounts for the interaction between matter and a given field. The process is described by an important information geometry tool: Fisher’s information measure (FIM). We find that it appropriately describes this concept, detecting salient details of the quantum–classical changeover (qcc). A good description of the qcc report can thus be obtained; in particular, a clear insight into the role that the uncertainty principle (UP) plays in the pertinent proceedings is presented. Plotting FIM versus a system’s motion invariant related to the UP, one can also visualize how anti-decoherence takes place, as opposed to the decoherence process studied in dozens of papers. In Fisher terms, the qcc can be seen as an order (quantum)–disorder (classical, including chaos) transition.

scholarly journals Classical-Quantum Transition as a Disorder-Order Process

Entropy ◽  
2022 ◽  
Vol 24 (1) ◽  
pp. 87
Author(s):  
Andres M. Kowalski ◽  
Angelo Plastino
Keyword(s):  
Uncertainty Principle ◽  
Information Geometry ◽  
Quantum Transition ◽  
Order Process ◽  
Process Mechanism ◽  
Classical Quantum ◽  
The Relationship ◽  
Insight Into

We associate here the relationship between de-coherence to the statistical notion of disequilibrium with regards to the dynamics of a system that reflects the interaction between matter and a given field. The process is described via information geometry. Some of its tools are shown here to appropriately explain the process’ mechanism. In particular we gain some insight into what is the role of the uncertainty principle (UP) in the pertinent proceedings.

scholarly journals Generalized Wavelet Fisher’s Information of1/fαSignals

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Julio Ramírez-Pacheco ◽  
Homero Toral-Cruz ◽  
Luis Rizo-Domínguez ◽  
Joaquin Cortez-Gonzalez
Keyword(s):  
Fisher Information ◽  
Gaussian Noise ◽  
Structural Breaks ◽  
Wavelet Domain ◽  
Fractional Gaussian Noise ◽  
Domain Definition ◽  
Potential Applications ◽  
Definition Of ◽  
The Time Domain ◽  
Fisher's Information

This paper defines the generalized wavelet Fisher information of parameterq. This information measure is obtained by generalizing the time-domain definition of Fisher’s information of Furuichi to the wavelet domain and allows to quantify smoothness and correlation, among other signals characteristics. Closed-form expressions of generalized wavelet Fisher information for1/fαsignals are determined and a detailed discussion of their properties, characteristics and their relationship with waveletq-Fisher information are given. Information planes of1/fsignals Fisher information are obtained and, based on these, potential applications are highlighted. Finally, generalized wavelet Fisher information is applied to the problem of detecting and locating weak structural breaks in stationary1/fsignals, particularly for fractional Gaussian noise series. It is shown that by using a joint Fisher/F-Statistic procedure, significant improvements in time and accuracy are achieved in comparison with the sole application of theF-statistic.

Three-Dimensional Aerodynamic Characteristics of Oscillating Supersonic and Transonic Annular Cascades

1982 ◽  
Author(s):  
M. Namba ◽  
A. Ishikawa
Keyword(s):  
Three Dimensional ◽  
Aerodynamic Characteristics ◽  
Aerodynamic Forces ◽  
Numerical Work ◽  
Dimensional Effects ◽  
Mathematical Expressions ◽  
Strip Theory ◽  
Clear Insight ◽  
Theory Approximation ◽  
Insight Into

A lifting surface theory is developed for unsteady three-dimensional flow in rotating subsonic, transonic and supersonic annular cascades with fluctuating blade loadings. Application of a finite radial eigenfunction series approximation not only affords a clear insight into the three-dimensional structures of acoustic fields but also provides mathematical expressions advantageous to numerical work. The theory is applied to oscillating blades. Numerical examples are presented to demonstrate three-dimensional effects on aerodynamic characteristics. Three-dimensional effects in supersonic cascades are generally small and strip theory predicts local aerodynamic forces as well as total aerodynamic forces with good accuracy. In transonic flow, however, the strip theory approximation breaks down near the sonic span station and three-dimensional effects are of primary importance.

Two Hiberno-Latin Texts on the Gospels

Traditio ◽  
1959 ◽  
Vol 15 ◽  
pp. 387-401
Author(s):  
Robert E. McNally
Keyword(s):  
Middle Ages ◽  
Latin Literature ◽  
Biblical Exegesis ◽  
Early Middle Ages ◽  
Intellectual Activity ◽  
Isidore Of Seville ◽  
Clear Insight ◽  
Venerable Bede ◽  
Alcuin Of York ◽  
Insight Into

The two texts presented here as a contribution to Hiberno-Latin literature are only a fragment of the still unedited Bible commentaries which came forth from the Irish Bible Schools of the Early Middle Ages. These two pieces are valuable sources for the development of biblical exegesis in the pre-Carolingian age, which, except for the accomplishment of the Venerable Bede (d. 735), is distinguished neither for the richness nor the depth of its theological writing. The years between the death of St. Isidore of Seville (d. 636) and Alcuin of York (d. 804) were dominated by the intellectual activity of the Irish monks, whose reputation for learning was mainly founded on their Bible scholarship. But the fruit of this scholarship is not well known. Though the two texts edited below do not represent all the intellectual factors involved in the biblical exegesis of the ancient schools of Ireland, they do reflect the spirit and method of these schools; and they do afford a clear insight into the cultural problem of the development of medieval exegesis at its earliest stage.

scholarly journals “It’s Not Just a Simple Meal. It’s So Much More”: Interactions Between Meals on Wheels Clients and Drivers

2018 ◽  
Vol 39 (2) ◽  
pp. 151-158 ◽  
Author(s):  
Kali S. Thomas ◽  
Emily A. Gadbois ◽  
Renee R. Shield ◽  
Ucheoma Akobundu ◽  
Andrea M. Morris ◽  
...  
Keyword(s):  
The United States ◽  
Case Managers ◽  
Qualitative Research Study ◽  
Personal Benefit ◽  
Meals On Wheels ◽  
Clear Insight ◽  
Additional Support ◽  
Insight Into ◽  
Made In ◽  
Meal Delivery

Background and Objectives: Meals on Wheels (MOW) programs provide home-delivered meals to over 1.5 million older adults; yet, very little is known about the drivers who make meal deliveries possible. Specifically, we do not have clear insight into their interaction with clients or the benefits that they may receive through their service. The objective of this article is to describe the characteristics of MOW drivers, the interactions among drivers and clients, and the benefits of the program to both. Research Design and Method: This qualitative research study reports on interviews with 84 MOW staff (leadership, case managers/client assessors, volunteer coordinators) and drivers at six geographically and operationally distinct programs across the United States. Results: Qualitative analysis of the interviews with MOW staff and drivers revealed the following key themes: (a) clients have multiple vulnerabilities; (b) clients appear to derive social, as well as nutritional benefit from receiving meals; (c) drivers report they provide additional support to their clients beyond delivering the meal; (d) social bonds between drivers and clients were reported to strengthen over time; (e) drivers claim that they, too, derive validation and personal benefit through their meal delivery. Discussion and Implications: This research highlights the significant contributions that meal delivery drivers made in the lives of MOW clients beyond the actual meal itself. This research also spotlights the perceived benefits experienced by the drivers and points to the importance of conducting further research to determine the effects of meal delivery on client and drivers’ outcomes, more broadly.

scholarly journals The Performativity of Organizational Culture in a No Excuses Charter School

2018 ◽  
Author(s):  
Jason Radford
Keyword(s):  
Organizational Culture ◽  
Charter School ◽  
Multiple Time Scales ◽  
Multiple Time ◽  
Successful Performance ◽  
High Performing ◽  
Clear Insight ◽  
Cyclical Process ◽  
Insight Into ◽  
Successes And Failures

Theories developed by academics influence those they study, in some cases fundamentally shaping the world we study. This influential relationship, often called performativity, has gone largely unnoticed and uncommented on in organizational theory and research. The few studies investigating performativity in organizations or other fields typically focus on cases in which the ultimate success of theory's implementation is known. In this paper, I examine how one high-performing charter school sought to turn a prescribed organizational culture into reality. I find that path to successful performance is very narrow and ambiguous. The school succeeded and failed in many steps of the process, making it difficult to assess whether the initiative was successful and to attribute their successes and failures to the theory or their implementation. I conclude that performativity is a cyclical process occurring at multiple time scales. During these cycles, organizations iteratively test new implementations of the theory, seeking to gain clear insight into the success of their strategy and correctly attribute their successes and failures to decide whether the theory actually works or not.

Advancements in Manufacturing Technology With Additive Manufacturing and Its Context With Industry 4.0

2021 ◽  
pp. 1-24
Author(s):  
Ganzi Suresh
Keyword(s):  
Additive Manufacturing ◽  
Industry 4.0 ◽  
Industrial Revolution ◽  
Three Dimensional ◽  
Metal Alloys ◽  
Layer By Layer ◽  
Post Processing ◽  
Clear Insight ◽  
Am Processes ◽  
Insight Into

Additive manufacturing (AM) is also known as 3D printing and classifies various advanced manufacturing processes that are used to manufacture three dimensional parts or components with a digital file in a sequential layer-by-layer. This chapter gives a clear insight into the various AM processes that are popular and under development. AM processes are broadly classified into seven categories based on the type of the technology used such as source of heat (ultraviolet light, laser) and type materials (resigns, polymers, metal and metal alloys) used to fabricate the parts. These AM processes have their own merits and demerits depending upon the end part application. Some of these AM processes require extensive post-processing in order to get the finished part. For this process, a separate machine is required to overcome this hurdle in AM; hybrid manufacturing comes into the picture with building and post-processing the part in the same machine. This chapter also discusses the fourth industrial revolution (I 4.0) from the perspective of additive manufacturing.

scholarly journals A Review on the Treatments for Monocular Visual Impairment for the Development of a Visual Aid

2018 ◽  
Vol 7 (4.35) ◽  
pp. 282
Author(s):  
Nirvenesh Ravindran ◽  
Hassan Mohamed
Keyword(s):  
Visual Impairment ◽  
Perceptual Learning ◽  
Depth Perception ◽  
Pharmacological Treatment ◽  
External Factors ◽  
Occlusion Therapy ◽  
The World ◽  
Visual Aid ◽  
Clear Insight ◽  
Insight Into

Amblyopia is the most commonly found monocular visual impairment in the world. This paper presents an initial investigation into developing a visual aid for monocular visual impaired patients. The investigations conducted in this paper include those from direct interviews from consultant ophthalmologist. Investigations include reviewing the principle required to be embedded into the visual aid such as the distance and depth perception. Stereoscopic cameras and algorithms are also further discussed to interlink with the concepts of depth perception. Monocular visual impairment can most of the time be caused by medical conditions like amblyopia or glaucoma, and rarely caused by accidents and external factors. Thus, existing treatments for amblyopia, the effectiveness and challenges of the treatment are also clearly investigated and scrutinized in this paper. Some of the existing treatments include refractive therapy, occlusion therapy, atropine injections, perceptual learning, pharmacological treatment and acupuncture. This study has provided a clear insight into the requirements of developing a visual aid, thus further addressing the challenges faced by the treatments in this impairment.

Tadpole: A Design Problem in the Mechanics of the Use of Sea Wave Energy

1996 ◽  
Vol 210 (4) ◽  
pp. 273-277 ◽  
Author(s):  
M J French
Keyword(s):  
Wave Energy ◽  
Special Interest ◽  
Reaction Force ◽  
Electrical Energy ◽  
Wave Forces ◽  
Sea Waves ◽  
Small Machine ◽  
Clear Insight ◽  
Insight Into ◽  
Sea Wave

A study is made of a device for obtaining electrical energy from sea waves, in which the problem of providing a reaction against the wave forces is met by a combination of a pendulum and gyroscopes. The mechanics is developed in a logical manner which gives a clear insight into the function, the pendulum providing the reaction force, which leaves an unbalanced moment to be countered by the gyroscopes, which also constitute the power take-off. The result is a relatively small machine with no external moving parts. The treatment requires no understanding of wave hydrodynamics. It is felt this paper may be of special interest as a design study, in which the relation between the mechanics and the development of the concept is peculiarly cogent.

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