scholarly journals An abstract approach to approximations in spaces of pseudocontinuable functions

2021 ◽  
Author(s):  
Adem Limani ◽  
Bartosz Malman
Keyword(s):  
Abstract Approach

TOWARD A THEORY OF SYSTEMS ENGINEERING

2021 ◽  
pp. 1-11
Author(s):  
George A. Hazelrigg ◽  
Donald G. Saari
Keyword(s):  
Systems Engineering ◽  
Engineering Community ◽  
Engineering Discipline ◽  
Abstract Approach ◽  
Core Set ◽  
Engineering Practices ◽  
Physical Laws ◽  
Simple Preference ◽  
Sizable Fraction ◽  
Current Systems

Abstract The derivation of a theory of systems engineering has long been complicated by the fact that there is little consensus within the systems engineering community regarding precisely what systems engineering is, what systems engineers do, and what might constitute reasonable systems engineering practices. To date, attempts at theories fail to accommodate even a sizable fraction of the current systems engineering community, and they fail to present a test of validity of systems theories, analytical methods, procedures or practices. This paper presents a more theoretical and more abstract approach to the derivation of a theory of systems engineering that has the potential to accommodate a broad segment of the systems engineering community and present a validity test. It is based on a simple preference statement: “I want the best system I can get.” From this statement, it is argued that a very rich theory can be obtained. Whereas most engineering disciplines are framed around a core set of widely accepted physical laws, to the authors' knowledge, this is the first attempt to frame an engineering discipline around a preference.

ChemInform Abstract: Approach to Trisubstituted 1H-Pyrroles from Alkynoates and Amines Mediated by tert-Butyl Perbenzoate.

ChemInform ◽  
2013 ◽  
Vol 44 (36) ◽  
pp. no-no
Author(s):  
Weibing Liu ◽  
Liquan Tan ◽  
Peng Zhou ◽  
Cui Chen ◽  
Qing Zhang
Keyword(s):  
Tert Butyl ◽  
Abstract Approach

The Italian Yearbook of International Law

1979 ◽  
Vol 16 ◽  
pp. 342-358
Author(s):  
R. W. Ianni
Keyword(s):  
International Law ◽  
Subject Matter ◽  
Significant Contribution ◽  
Abstract Approach ◽  
The Family ◽  
The Subject

To the impressive list of Italian periodicals on international law led by the prestigious Rivista di Diritto Internazionale there has now been added The Italian Yearbook of International Law, published exclusively in English. Italian scholars have made a very significant contribution to doctrinal developments in international law; however, some of their work has gone unnoticed because Italian is not among the languages in widespread use in international law circles. In addition, Italian scholarship has suffered somewhat from what some consider to be an overly theoretical or abstract approach to the subject matter. While it is always a noteworthy occasion to welcome a new member into the family of international law yearbooks, the advent of the Italian yearbook is particularly noteworthy, contributing as it does to the accessibility of a broad range of material and learned comment. It is appropriate, therefore, that the first issues of The Italian Yearbook of International Law receive extended comment in the pages of this Yearbook.

scholarly journals A categorical perspective towards aerodynamic models for aeroelastic analyses of bridge decks

2019 ◽  
Vol 6 (3) ◽  
pp. 181848 ◽  
Author(s):  
I. Kavrakov ◽  
D. Legatiuk ◽  
K. Gürlebeck ◽  
G. Morgenthal
Keyword(s):  
Mathematical Models ◽  
Category Theory ◽  
Structural Engineering ◽  
Model Comparison ◽  
Model Assessment ◽  
Adequate Description ◽  
Categorical Approach ◽  
Abstract Approach ◽  
Huge Variety ◽  
Modelling Approach

Reliable modelling in structural engineering is crucial for the serviceability and safety of structures. A huge variety of aerodynamic models for aeroelastic analyses of bridges poses natural questions on their complexity and thus, quality. Moreover, a direct comparison of aerodynamic models is typically either not possible or senseless, as the models can be based on very different physical assumptions. Therefore, to address the question of principal comparability and complexity of models, a more abstract approach, accounting for the effect of basic physical assumptions, is necessary. This paper presents an application of a recently introduced category theory-based modelling approach to a diverse set of models from bridge aerodynamics. Initially, the categorical approach is extended to allow an adequate description of aerodynamic models. Complexity of the selected aerodynamic models is evaluated, based on which model comparability is established. Finally, the utility of the approach for model comparison and characterization is demonstrated on an illustrative example from bridge aeroelasticity. The outcome of this study is intended to serve as an alternative framework for model comparison and impact future model assessment studies of mathematical models for engineering applications.

scholarly journals The Bilingual Mental Lexicon and Lemmatic Transfer in Second Language Learning

2020 ◽  
Vol 2 (3) ◽  
pp. p43
Author(s):  
Longxing Wei
Keyword(s):  
Second Language ◽  
Language Learning ◽  
Argument Structure ◽  
Mental Lexicon ◽  
Language Transfer ◽  
L1 Transfer ◽  
Abstract Approach ◽  
Lexical Structure ◽  
L2 Learning ◽  
Predicate Argument Structure

There have been numerous studies of first Language (L1) transfer in second Language (L2) learning. Various models have been proposed to explore the sources of language transfer and have also caused many controversies over the nature of language transfer and its effects on interlanguage. Different from most previous studies remaining at a surface level of observation, this study proposes an abstract approach, which is abstract because it goes beyond any superficial observation and description by exploring the nature and activity of the bilingual mental lexicon in L2 learning. This approach adopts the Bilingual Lemma Activation Model (BLAM) (Wei, 2006a, 2006b) and tests its crucial assumptions and claims: The bilingual mental lexicon does not simply contain lexemes but abstract entries, called “lemmas”, about them; lemmas in the bilingual mental lexicon are language-specific; language-specific lemmas in the bilingual mental lexicon are in contact in L2 learning, lemmas underlying L1 abstract lexical structure may replace those underlying L2 abstract lexical structure. Lemmas in the bilingual mental lexicon are about three levels of abstract lexical structure: lexical-conceptual structure, predicate-argument structure, and morphological realization patterns. The typical instances of L1 lemma transfer in L2 learning are discussed and explained in support of the BLAM.

Sign in / Sign up

Export Citation Format

Share Document