scholarly journals Coupling of External Electric Circuits with Computational Domains

J ◽  
2021 ◽  
Vol 4 (4) ◽  
pp. 865-880
Author(s):  
Riccardo Scorretti
Keyword(s):  
Electrical Current ◽  
Research Literature ◽  
Computational Method ◽  
Static Case ◽  
Computational Domain ◽  
Electric Circuits ◽  
Practical Applications ◽  
Coupling Equations ◽  
Definition Of ◽  
2D And 3D

Coupling of electrical circuits with 2D and 3D computational domains is very important for practical applications. To this aim, the notions of “electrical current” and “voltage” must be defined precisely and linked with local quantities (i.e., fields and potentials) in the computational domain. Apart from the static case, the definition of voltage is more complex than it may appear at a first glance, and it is usually tainted by unspoken and/or not justified assumptions. The purpose of this work is twofold: on one hand, to shed light on the definition and on the physical meaning of voltage in the case of time varying quasi-static fields and, on the other hand, to show how to establish coupling equations between lumped parameters circuit model and 2D/3D computational domains. It is demonstrated that a precise physical significance can be given to the voltage in terms of power balance only (the notion of potential is unnecessary). A couple of original operators which allow to express voltages and currents are introduced. Based on a critical analysis of the research literature, it is shown that existing coupling formulas can all be rewritten as particular cases of these two operators. The developed analysis is independent from any computational method and can be used to devise new coupling formulas.

Commentary on The Difficult Child

1986 ◽  
Vol 8 (2) ◽  
pp. 35-37
Author(s):  
Stella Chess
Keyword(s):  
New York ◽  
Mental Health Professionals ◽  
Health Professionals ◽  
Research Literature ◽  
Research Experience ◽  
Behavioral Issues ◽  
Practical Applications ◽  
Behavioral Pediatrics ◽  
The One ◽  
Definition Of

Dr William Carey has earned a well-deserved reputation as an important figure in the field of behavioral pediatrics. His studies and writings have enhanced our understanding of a number of behavioral issues that concern both pediatricians and mental health professionals. His major contributions have been in the field of temperament studies. Here, he has been a clinician-researcher who has made valuable theoretical, clinical, and methodologic contributions to the conceptualization of temperament, its systematic measurement, and its practical applications by the practicing clinician. His present review of "The Difficult Child" gives us an authoritative and scholarly survey of one of the complex theoretical and practical issues of temperamental individuality in children. On the one hand, the review summarizes the pertinent research literature briefly but cogently. At the same time, Dr Carey's judgments and advice are not based on any academic approach but, on the contrary, reflect his own rich clinical and research experience in the field of temperament. My own comments will focus mainly on expanding Dr Carey's discussion of the basis for the concept of the temperamentally difficult child and his comments on practical management. Our definition of difficult temperament grew out of two separate lines of investigation. First and foremost was the vivid impressions gained by Dr Alexander Thomas and myself as we interviewed the parents in our New York Longitudinal Study(NYLS), which we initiatead in 1956.

Resolution and measurement in the scanning electron microscope

1987 ◽  
Vol 45 ◽  
pp. 534-537 ◽  
Author(s):  
Michael T. Postek
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Engineering Design ◽  
Resolving Power ◽  
Practical Applications ◽  
Instrument Resolution ◽  
Accurate Definition ◽  
Definition Of ◽  
Scanning Electron ◽  
Better Than

The term ultimate resolution or resolving power is the very best performance that can be obtained from a scanning electron microscope (SEM) given the optimum instrumental conditions and sample. However, as it relates to SEM users, the conventional definitions of this figure are ambiguous. The numbers quoted for the resolution of an instrument are not only theoretically derived, but are also verified through the direct measurement of images on micrographs. However, the samples commonly used for this purpose are specifically optimized for the measurement of instrument resolution and are most often not typical of the sample used in practical applications.SEM RESOLUTION. Some instruments resolve better than others either due to engineering design or other reasons. There is no definitively accurate definition of how to quantify instrument resolution and its measurement in the SEM.

Assessment and Orff Schulwerk Pedagogy

2019 ◽  
pp. 538-560
Author(s):  
Daniel Johnson
Keyword(s):  
Teacher Educators ◽  
Authentic Assessment ◽  
Research Literature ◽  
National Standards ◽  
International Adoptions ◽  
Practical Applications ◽  
Orff Schulwerk ◽  
Recent Developments ◽  
Based Instruction ◽  
Assessment Strategies

This chapter on assessing student learning and Orff Schulwerk examines the foundations of this approach, its focus on creativity, and practical applications of this pedagogy. By reviewing current research literature and international adoptions of the Schulwerk, the chapter focuses on three assessment-related challenges: a lack of clearly defined teaching practices, a de-emphasis of evaluation in the Orff process, and inherent challenges related to assessing creativity. An examination of professional resource documents and recent developments in national standards provides ways to address each of these assessment challenges in Orff-based instruction. A discussion of curricular levels offers more possibilities for enhancing authentic assessment strategies. Practical recommendations for Orff Schulwerk teachers to improve their assessment protocols and implications for teacher-educators conclude this chapter.

scholarly journals Modulation of optical absorption in m-Fe1−xRuxS2 and exploring stability in new m-RuS2

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
H. Joshi ◽  
M. Ram ◽  
N. Limbu ◽  
D. P. Rai ◽  
B. Thapa ◽  
...  
Keyword(s):  
Optical Absorption ◽  
Phonon Dispersion ◽  
Applied Pressure ◽  
Orthorhombic Phase ◽  
Zero Point ◽  
Computational Method ◽  
Crystal Field Theory ◽  
Point Energy ◽  
Practical Applications ◽  
New Phase

AbstractA first-principle computational method has been used to investigate the effects of Ru dopants on the electronic and optical absorption properties of marcasite FeS2. In addition, we have also revealed a new marcasite phase in RuS2, unlike most studied pyrite structures. The new phase has fulfilled all the necessary criteria of structural stability and its practical existence. The transition pressure of 8 GPa drives the structural change from pyrite to orthorhombic phase in RuS2. From the thermodynamical calculation, we have reported the stability of new-phase under various ranges of applied pressure and temperature. Further, from the results of phonon dispersion calculated at Zero Point Energy, pyrite structure exhibits ground state stability and the marcasite phase has all modes of frequencies positive. The newly proposed phase is a semiconductor with a band gap comparable to its pyrite counterpart but vary in optical absorption by around 106 cm−1. The various Ru doped structures have also shown similar optical absorption spectra in the same order of magnitude. We have used crystal field theory to explain high optical absorption which is due to the involvement of different electronic states in formation of electronic and optical band gaps. Lӧwdin charge analysis is used over the customarily Mulliken charges to predict 89% of covalence in the compound. Our results indicate the importance of new phase to enhance the efficiency of photovoltaic materials for practical applications.

Political discourse in translation

2009 ◽  
Vol 4 (1) ◽  
pp. 1-30 ◽  
Author(s):  
Anna Romagnuolo
Keyword(s):  
Political Discourse ◽  
Rhetorical Criticism ◽  
Presidential Rhetoric ◽  
Research Literature ◽  
Translation Strategies ◽  
Parallel Corpora ◽  
Language For Specific Purposes ◽  
Presidential Speech ◽  
The Subject ◽  
Definition Of

Political discourse has been the subject of increasing interest in recent decades with the development of ideological and rhetorical criticism focusing on US presidential speeches, especially after the events of 9/11. Indeed, extensive research literature already exists in the field of American presidential rhetoric. The same cannot be said for studies of political texts available in translation. Currently, translation studies seems to be more concerned with the politics and the politicization of translation than with the translation of political texts, which have been examined more from a synchronic perspective than a diachronic one. Using a diachronic parallel corpora of Italian translations (published in books and newspapers) of a specific genre of US presidential speech, the inaugural address, this study highlights recurring translation strategies as well as problems, related to culture-bound and value-laden political terms, style, and phraseology. This research also seeks to contribute to the definition of political language as a language for specific purposes.

scholarly journals Packaged Droplet Microresonator for Thermal Sensing with High Sensitivity

Sensors ◽  
2018 ◽  
Vol 18 (11) ◽  
pp. 3881 ◽  
Author(s):  
Xiaogang Chen ◽  
Liang Fu ◽  
Qijing Lu ◽  
Xiang Wu ◽  
Shusen Xie
Keyword(s):  
Liquid Droplet ◽  
Thermal Sensitivity ◽  
High Sensitivity ◽  
Liquid Limit ◽  
Practical Applications ◽  
Sensing Applications ◽  
Cavity Structure ◽  
Thermal Sensing ◽  
Facile Fabrication ◽  
Definition Of

Liquid droplet and quasi-droplet whispering gallery mode (WGM) microcavities have been widely studied recently for the enhanced spatial overlap between the liquid and WGM field, especially in sensing applications. However, the fragile cavity structure and the evaporation of liquid limit its practical applications. Here, stable, packaged, quasi-droplet and droplet microcavities are proposed and fabricated for thermal sensing with high sensitivity. The sensitivity and electromagnetic field intensity distribution are analyzed by Mie theory, and a quantified definition of the quasi-droplet is presented for the first time to the best of our knowledge. By doping dye material directly into the liquid, lasing packaged droplet and quasi-droplet microcavity sensors with a high thermal sensitivity of up to 205.3 pm/°C are experimentally demonstrated. The high sensitivity, facile fabrication, and mechanically robust properties of the optofluidic, packaged droplet microresonator make it a promising candidate for future integrated photonic devices.

scholarly journals The dynamics of Pecking Order and Agency theories on crowdfunding concept as alternate finance for start-up businesses

2020 ◽  
Vol 5 (1) ◽  
pp. 1-13
Author(s):  
Francis Kwaku Kuma ◽  
Mohd Effandi Yosuff
Keyword(s):  
Theoretical Aspect ◽  
Review Of Literature ◽  
Pecking Order ◽  
Practical Applications ◽  
Theoretical Perspectives ◽  
Start Up ◽  
Key Concepts ◽  
Definition Of ◽  
The Relationship

The study explores the relevance of theoretical aspect of crowd financing by reviewing the defining literature on Pecking Order and Agency theories in details and evaluates applications of these theories based on crowdfunding. In particular, the study critically considers the key concepts of these theories and how they could be applied in practical terms. The study decides to adopt Pecking Order and the Agency theories because they provide valuable insights into the trend of crowdfunding streams available to firms. The paper primarily adds to existing literature on the broader definition of crowdfunding as a concept and then examine the relationship between this concept and its practical applications to the chosen theories. The study combines these theoretical perspectives with the practical aspects of startup companies raising finance using the crowd because a broad reading of the literature tends to point to in this direction. The key concepts of these theories are critically considered and the study is conducted in the form of review of literature and expression of opinion. Citation: author1, author2, author3. The dynamics of Pecking Order and Agency theories on crowdfunding concept as alternate finance for start-up businesses. 2020; 4(1): 1－13.Received: (February 2, 2020) Accepted: (March 31, 2020)

scholarly journals MINORITY. THE MINOR-VICTIM AND THE MINOR-OFFENDER

2020 ◽  
Vol 15 (3-4) ◽  
pp. 17-30
Author(s):  
Diana GRUMEZA ◽  
Keyword(s):  
Sexual Behaviour ◽  
Research Literature ◽  
Chronological Age ◽  
Common Language ◽  
Limit Set ◽  
International Level ◽  
Rights Of The Child ◽  
Definition Of ◽  
Age Of Majority ◽  
Intention To Change

Research literature notes differently the time of the minority as compared to the time when the minor gives its assumed consent for sexual intercourse, in the latter case, the age in some jurisdictions being of 16 years old.( Taylor, Quayle,( 2003), : 3). At the international level, there was also the intention to change the biological age with the age that the minor seems to have, but the difficulties deriving from establishing an age that the minor has only apparently determined the maintenance of the chronological age as a criterion for establishing the minority, and implicitly, the existence of the crime. Particular attention is paid to adolescents, who are minors between the ages of 13 and 17. According to the UN Convention on the Rights of the Child (S.1), “child means any human being under the age of 18 (…).” However, the UN Convention leaves the states to determine alone the age of majority, which may be below or above the limit set by the Convention. That is why we find different ages worldwide for determining adulthood. In common language, the concepts of "pornography" and "obscenity" are substantially equal. However, pornography involving minors does not necessarily mean obscene behaviour, it can represent explicit, lewd or suggestive sexual behaviour Starting from the definition of the minor in the UN Convention on the Rights of the Child, we go beyond the multiple discussions in the research literature on the minority, the term "minor" being considered too imprecise, impliying both the criminal and civil minority. Criminologically speaking, the necessary distinction is made between child - adolescent - adult - elderly. So, both the child and adolescent are subsumed to the concept of minor. We also note that the minority can be a characteristic of the victim, but also of the offender.

scholarly journals 2D IPO's for Constant Speed Lines, Curves, NURBS

2019 ◽  
Author(s):  
Valere Huypens
Keyword(s):  
Major Axis ◽  
Pulse Method ◽  
Constant Speed ◽  
Sampled Data ◽  
Reference Pulse ◽  
Production Manager ◽  
Definition Of ◽  
The Right ◽  
2D And 3D ◽  
Better Than

<div>Current constant speed IPO's, usually, use Sampled-data IPO's and constant speed lines use the </div><div>wrong initialized software DDA-ipo's, which make these IPO's unusable. The Bresenham- and </div><div>midpoint IPO's are non-constant speed reference pulse IPO's with bounded inaccuracy.</div><div>By adding an ultra-fast 3-lines algorithm "PRM-cs" to the actual midpoint or Bresenham algorithms, </div><div>we convert these midpoint-ipo's to very fast, constant speed, reference pulse IPO's. </div><div>This applies to 2D-lines, 3D-lines, 2D-curves and 2D-NURBS.</div><div>The PRM-cs measures, in real-time, the length of the discrete curve and the PRM-cs is completely new. </div><div>We define the best IPO, the major axis principle and the LSD-priority. </div><div>The major axis principle holds for the actual 3D-line IPO's. These IPO's are, generally, inaccurate, </div><div>but they can be updated to constant speed 3D-line IPO's, when the production manager agrees.</div><div>The Digital Geometric Geometry (DAG) defines the discrete lines globally, but this global </div><div>definition of a discrete 3D-line, gives discrete 3D-lines whose accuracy is much less than the </div><div>accuracy of the best discrete 3D-lines (e.g. 37% worse).</div><div>We describe the three causes of the inaccurate (imperfect) discrete 3D-lines. </div><div>All existing pulse-rate or PRM-ipo's use a wrong initialization, which deteriorates the accuracy. </div><div>We determine the right initialization for the new PRM-cs and the updated PRM-ipo. </div><div>We propose the benchmark-ipo "listSIM-ipo". This constant speed IPO can, also, be used in real-</div><div>time for every 2D- and 3D-curve. </div><div>The 3rd-degree Trident NURB shows that the constant speed reference pulse method is much </div><div>better than the existing sampled-data methods.</div>

Minimum entropy deconvolution and simplicity: A noniterative algorithm

Geophysics ◽  
1985 ◽  
Vol 50 (3) ◽  
pp. 394-413 ◽  
Author(s):  
Carlos A. Cabrelli
Keyword(s):  
Synthetic Data ◽  
Computational Method ◽  
Minimum Entropy ◽  
Autocorrelation Matrix ◽  
Numerical Tests ◽  
Convolution Model ◽  
Single Input ◽  
Definition Of ◽  
Single Matrix ◽  
New Criterion

Minimum entropy deconvolution (MED) is a technique developed by Wiggins (1978) with the purpose of separating the components of a signal, as the convolution model of a smooth wavelet with a series of impulses. The advantage of this method, as compared with traditional methods, is that it obviates strong hypotheses over the components, which require only the simplicity of the output. The degree of simplicity is measured with the Varimax norm for factor analysis. An iterative algorithm for computation of the filter is derived from this norm, having as an outstanding characteristic its stability in presence of noise. Geometrical analysis of the Varimax norm suggests the definition of a new criterion for simplicity: the D norm. In case of multiple inputs, the D norm is obtained through modification of the kurtosis norm. One of the most outstanding characteristics of the new criterion, by comparison with the Varimax norm, is that a noniterative algorithm for computation of the deconvolution filter can be derived from the D norm. This is significant because the standard MED algorithm frequently requires in each iteration the inversion of an autocorrelation matrix whose order is the length of the filter, while the new algorithm derived from the D norm requires the inversion of a single matrix. On the other hand, results of numerical tests, performed jointly with Graciela A. Canziani, show that the new algorithm produces outputs of greater simplicity than those produced by the traditional MED algorithm. These considerations imply that the D criterion yields a new computational method for minimum entropy deconvolution. A section of numerical examples is included, where the results of an extensive simulation study with synthetic data are analyzed. The numerical computations show in all cases a remarkable improvement resulting from use of the D norm. The properties of stability in the presence of noise are preserved as shown in the examples. In the case of a single input, the relation between the D norm and the spiking filter is analyzed (Appendix B).

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