326 research outputs found

    Neuroqueer Literacies in a Physics Context: A Discussion on Changing the Physics Classroom Using a Neuroqueer Literacy Framework

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    Life experience, identity, the relationship between ourselves and the world around us among others, all affect and shape how we, as scientists, construct knowledge. Neurodiversity, the diversity of minds, is an interesting concept when keeping this in mind. Being neurodivergent, or neuroqueer (the viewing of being neurodivergent as a queer thing, along with the intersection of neurodiversity and queerness), means having non-neurotypical ways of perceiving and interacting with the world, and especially of creating knowledge about the rules and regulations, both natural and societal, that govern it locally and broadly. Neuroqueer physicists, therefore, have unique non-normative ways of doing physics, the study of the rules (which is done societally) which govern the natural world. It is imperative that, when teaching neurodivergent students, we encourage and support this non-normative way of thinking about physics, and help them do physics in ways that they will be successful, and support the development of Neuroqueer (Scientific) Literacies, from Kleekamp's and Smilges's works on literacy. We here present a brief overview of Neuroqueer Literacies and how to apply them in the physics classroom.Comment: 8 pages, 1 figure. Submitted to The Physics Teache

    Formalism Describing the Object Models for Domains on a Unified Metamodel of Object-Oriented Database Applications Terms

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    This article presents a formal description of object models in terms of unified object-oriented database applications metamodel. The metamodel was developed by the author and independent of the domain area. The metamodel is realized by the author in own environment of development SharpArchitect RAD (Rapid Application Development) Studio. On the basis of the metamodel we using set theory proposed formal approach to the description of the model application domains

    Metamodel-Driven Design of Database Applications

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    This article describes the unified metamodel of object system which can be used for Metamodel-Driven Design (MMDD) of information system. At the beginning of the work carried out in-depth analysis of existing studies devoted to the organization different metamodels. Metamodel for representing fragments in the figures presented class diagrams of Unified Modeling Language (UML). The metamodel is realized by the author in own environment of development SharpArchitect RAD Studio. In the beginning of this article provides a general diagram which displays important associations. Next are separately shown metaclasses hierarchy which representing the entity classes of domain. There are also metaclasses to represent different types of class attributes. In addition, there are metaclasses to represent methods validation rules and visualization rules. This allows the system to implement the behavior the need for object-oriented design and allows to configure the graphical user interface. Each hierarchy is described in detail with an indication of abstract and concrete classes and associations in which they participate.Any database system can be developed in terms of a unified metamodel of object system described in detail in this article. This work provides links to the work that is described in detail the experience of using the described metamodel. As further development of the work the author suggest the development of a formal mathematical apparatus describing applied domains and the development of UML-profile that facilitates the process of logical design of information systems in the framework of the proposed approach.This paper describes a practical experience of the implementation of the authors of information system that automates the activities of a fast food restaurant. We studied in detail the functionality a similar system of the most popular in Russia

    UML-Profile for Metamodel-Driven Design of Database Applications

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    The article presents a UML profile for a software development environment Sharp Architect RAD Studio. This tool is intended to agile design of object-oriented databases. The main part of the article contains the description of the profile metamodel. There is an example of the profile usage. At the end of the article the authors draw some conclusions and plan future works

    The role of apical support and rectal mucosal prolapse excision in successful treatment of rectocele combined with perineum descending: short-term and follow-up results

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    The aim of the research was to improve the results of surgery treatment of posterior compartment of pelvic floor using abdominal sacrocolpopexy and stapled trance-anal resection (STARR

    The advantages of the abdominal sacral colpopexy combined with stapled trance-anal resection of the rectal mucosal prolapse (STARR) for the surgical treament of perineum descending syndrome

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    The problem of pelvic organ prolapse in women is still actual, because of high frequency of this pathology. Several surgical techniques have been suggested for pelvic descending syndrome treatment. But a large number of complications, unsatisfactory anatomical and functional results of suggested methods force to look for other solutions of the proble

    The second Konus-Wind catalog of short gamma-ray bursts

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    In this catalog, we present the results of a systematic study of 295 short gamma-ray bursts (GRBs) detected by Konus-Wind (KW) from 1994 to 2010. From the temporal and spectral analyses of the sample, we provide the burst durations, the spectral lags, the results of spectral fits with three model functions, the total energy fluences and the peak energy fluxes of the bursts. We discuss evidence found for an additional power-law spectral component and the presence of extended emission in a fraction of the KW short GRBs. Finally, we consider the results obtained in the context of the Type I (merger-origin) / Type II (collapsar-origin) classifications.Comment: Accepted to the Astrophysical Journal Supplement Series (7 Figures, 8 Tables

    Quick search and synchronization algorithm for wideband noise-like signals

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    In this regard, the article proposes the fast search and synchronization algorithm for high-orbit satellite telecommunication systems when they are used as the information carriers of broadband noise-like signals with linear frequency modulation. The developed algorithm is based on the consideration of development peculiarities for these signal

    Interface effects in spin-dependent tunneling

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    In the past few years the phenomenon of spin dependent tunneling (SDT) in magnetic tunnel junctions (MTJs) has aroused enormous interest and has developed into a vigorous field of research. The large tunneling magnetoresistance (TMR) observed in MTJs garnered much attention due to possible application in random access memories and magnetic field sensors. This led to a number of fundamental questions regarding the phenomenon of SDT. One such question is the role of interfaces in MTJs and their effect on the spin polarization of the tunneling current and TMR. In this paper we consider different models which suggest that the spin polarization is primarily determined by the electronic and atomic structure of the ferromagnet/insulator interfaces rather than by their bulk properties. First, we consider a simple tight-binding model which demonstrates that the existence of interface states and their contribution to the tunneling current depend on the degree of hybridization between the orbitals on metal and insulator atoms. The decisive role of the interfaces is further supported by studies of spin-dependent tunneling within realistic first-principles models of Co/vacuum/Al, Co/Al2O3/Co, Fe/MgO/Fe, and Co/SrTiO3/Co MTJs. We find that variations in the atomic potentials and bonding strength near the interfaces have a profound effect resulting in the formation of interface resonant states, which dramatically affect the spin polarization and TMR. The strong sensitivity of the tunneling spin polarization and TMR to the interface atomic and electronic structure dramatically expands the possibilities for engineering optimal MTJ properties for device applications.Comment: 22 page
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