Alternative form of the hydrogenic wave functions for an extended, uniformly charged nucleus

1980 ◽  
Vol 48 (11) ◽  
pp. 949-953 ◽  
Author(s):  
E. Ley‐Koo ◽  
E. Castaño ◽  
D. Finotello ◽  
E. Nahmad‐Achar ◽  
S. Ulloa
Keyword(s):  
Wave Functions ◽  
Alternative Form ◽  
Charged Nucleus

Photo-electric absorption in hydrogen-like atoms

1932 ◽  
Vol 28 (2) ◽  
pp. 209-218 ◽  
Author(s):  
P. A. M. Dirac ◽  
J. W. Harding
Keyword(s):  
Central Charge ◽  
Bound State ◽  
Incident Radiation ◽  
Wave Functions ◽  
Central Field ◽  
Electronic Interaction ◽  
Rate Of Absorption ◽  
Screening Factor ◽  
Charged Nucleus ◽  
Partial Correction

If light of a frequency which corresponds to an energy greater than the ionisation potential falls on an atom, an electron may be ejected and energy absorbed. To calculate the absorption coefficient, or the rate of absorption of energy per unit intensity of incident radiation for a given frequency, one must first choose a model for the atom. If we confine ourselves to the inner K electrons there will be two electrons in this shell for the heavier atoms, and a fairly good model of the atom is obtained by considering each electron to be moving independently in a central field of force due to the charged nucleus: i.e. we neglect electronic interaction and assume that the wave functions for the system are hydrogenic. Some writers make a partial correction for this neglect of interaction by modifying the central charge through the introduction of a screening factor which is so chosen that the minimum calculated energy required to remove one of the K electrons will agree with the experimental value provided by the K absorption edge. In general, however, the approximation is fairly good, and this is particularly so in the interior of a star where the atoms are highly ionised. It is not so good when the atom is bound as in a metal, and, of course, most of the laboratory work has been carried out on atoms in this bound state.

Hydrogenic Wave Functions for an Extended, Uniformly Charged Nucleus

1972 ◽  
Vol 40 (7) ◽  
pp. 969-971 ◽  
Author(s):  
A. F. Yano ◽  
F. B. Yano
Keyword(s):  
Wave Functions ◽  
Charged Nucleus

A Review of 21 iPad Applications for Augmentative and Alternative Communication Purposes

2012 ◽  
Vol 21 (2) ◽  
pp. 60-71 ◽  
Author(s):  
Ashley Alliano ◽  
Kimberly Herriger ◽  
Anthony D. Koutsoftas ◽  
Theresa E. Bartolotta
Keyword(s):  
Augmentative And Alternative Communication ◽  
Cost Effective ◽  
Alternative Form ◽  
Alternative Communication ◽  
Text To Speech ◽  
Reference Guide ◽  
Expressive Communication ◽  
Communication Needs ◽  
User Friendly ◽  
Ipad Applications

Abstract Using the iPad tablet for Augmentative and Alternative Communication (AAC) purposes can facilitate many communicative needs, is cost-effective, and is socially acceptable. Many individuals with communication difficulties can use iPad applications (apps) to augment communication, provide an alternative form of communication, or target receptive and expressive language goals. In this paper, we will review a collection of iPad apps that can be used to address a variety of receptive and expressive communication needs. Based on recommendations from Gosnell, Costello, and Shane (2011), we describe the features of 21 apps that can serve as a reference guide for speech-language pathologists. We systematically identified 21 apps that use symbols only, symbols and text-to-speech, and text-to-speech only. We provide descriptions of the purpose of each app, along with the following feature descriptions: speech settings, representation, display, feedback features, rate enhancement, access, motor competencies, and cost. In this review, we describe these apps and how individuals with complex communication needs can use them for a variety of communication purposes and to target a variety of treatment goals. We present information in a user-friendly table format that clinicians can use as a reference guide.

Sufi Springs: Air on an Oud String

CounterText ◽  
2015 ◽  
Vol 1 (1) ◽  
pp. 38-58 ◽  
Author(s):  
Caroline Rooney
Keyword(s):  
Free Market ◽  
Alternative Form ◽  
Collective Consciousness ◽  
Right Wing ◽  
Initial Part ◽  
Egyptian Revolution ◽  
Mimetic Desire ◽  
Arab Uprisings ◽  
The Will ◽  
Arts Activism

The initial part of Caroline Rooney's essay offers an incisive account of the author's experience of Cairo in the years leading up to the 2011 uprisings that led to the end of Hosni Mubarak's rule. Rooney's narrative evinces an active Downtown cosmopolitan spirit characterised by a burgeoning sense of ‘audacity’ in forms of arts activism, and its attendant collective spirit of perseverance that increasingly rendered ineffective the repressive manoeuvres of Egypt's disciplinary State. Criticising the impulse to construe the Egyptian revolution in terms of a mimetic desire for a secular democracy on Western lines, Rooney insists that the Arab uprisings consisted, in many respects, of a revolution against Western-style free market neoliberalism. Countering the perpetual cynicism attendant to the latter, Rooney argues, requires a form of politicisation that maintains ‘the ongoing presence of the real as a matter of collective spirit’ – one that can outlast the colonial interlude by resisting the absolutist self-assertion of market fundamentalism and its collusions with ‘diplo-economic cosmopolitanism’ as a mode of class-discriminatory privilege, as well as the compromising nature of right-wing Islam. Rooney moves on to locate a counter-movement based on an alternative form of consciousness that manifests itself ‘as solidarity, as resoluteness, as genuine comradeship, as collective consciousness, as revolutionary faith and [as] festiveness.’ In the last part of her essay, Rooney raises the intriguing case of Sufism, and specifically its mulid rituals and its important role in the Egyptian revolutionary effort, as a relational cultural mode that can survive the will-to-dominance as a persistent and liberatory collective gesture.

Magnetotunneling spectroscopy imaging of electron wave functions in self-assembled InAs quantum dots

2001 ◽  
Vol 171 (12) ◽  
pp. 1365
Author(s):  
E.E. Vdovin ◽  
Yu.N. Khanin ◽  
Yu.V. Dubrovskii ◽  
A. Veretennikov ◽  
A. Levin ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Wave Functions ◽  
Electron Wave ◽  
Inas Quantum Dots ◽  
Self Assembled

Antacid Studies of Newly Developed Polyherbal Formulation

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Joydeep Mazumder ◽  
Devender Pathak ◽  
Rachna Kumria
Keyword(s):  
Droplet Size ◽  
Positive Response ◽  
Alternative Form ◽  
Herbal Treatment ◽  
Pharmaceutical Ingredients ◽  
Polyherbal Formulation ◽  
Herbal Plants

A lot of herbal plants are used across the globe to remedy various diseases. Herbal treatment is an alternative form for medicine where natural herbs and their extracts are used to cure a situation. Some drugs are proved to contain pharmaceutical ingredients suitable for treatment of stomach acidity or ulcers. The present work deals with the claim that a polyherbal formulation can be formulated which can be used as an alternative to already existing antacid formulations in the market. Therefore, some selected herbs with the tendency to neutralize acid in the stomach are selected and a formulation is formed. Microemulsion of oil showed higher stability with droplet size in the range of 110-410nm. The product then screened for in vitro antacid properties which showed significant positive response

Gravity as the curvature of the wave function of the universe.

2019 ◽  
Author(s):  
Vitaly Kuyukov
Keyword(s):  
Wave Function ◽  
Wave Functions ◽  
Main Task ◽  
Reference Systems ◽  
Theory Of Relativity ◽  
General Theory Of Relativity ◽  
Principle Of Equivalence ◽  
Relative Wave Function ◽  
New Equation ◽  
The Universe

Modern general theory of relativity considers gravity as the curvature of space-time. The theory is based on the principle of equivalence. All bodies fall with the same acceleration in the gravitational field, which is equivalent to locally accelerated reference systems. In this article, we will affirm the concept of gravity as the curvature of the relative wave function of the Universe. That is, a change in the phase of the universal wave function of the Universe near a massive body leads to a change in all other wave functions of bodies. The main task is to find the form of the relative wave function of the Universe, as well as a new equation of gravity for connecting the curvature of the wave function and the density of matter.

DISTANCE LEARNING AS AN ALTERNATIVE FORM OF CONTINUING EDUCATION: PROBLEMS AND TERMS OF REALISATION

2020 ◽  
pp. 87-92
Author(s):  
Сергей Александрович Грязнов
Keyword(s):  
Higher Education ◽  
Distance Education ◽  
Distance Learning ◽  
Continuing Education ◽  
Higher Education Institutions ◽  
Educational Technologies ◽  
Alternative Form ◽  
The Internet ◽  
Classical Training ◽  
Teaching In Higher Education

Технологии меняют образ жизни и деятельность человека. Глобальная сеть Интернет облегчает быстрый доступ к полезной информации. Социальная, культурная и образовательная конкурентоспособность находятся под влиянием образовательных технологий, которые положительно влияют на стиль, продолжительность и метод обучения в высших учебных заведениях. Дистанционное образование возможно применять и как полноценную самодостаточную форму, и как дополнение к классическому обучению в аудиториях. Автор рассматривает в статье дистанционную форму обучения как альтернативу традиционной форме преподавания в вузах на время периодов самоизоляции (пандемии, сезонные карантины), а также как дополнение к традиционным формам обучения. Анализируются проблемные и положительные аспекты применения данной формы. Указаны возможные форматы обучения в условиях дистанционного образования. Выделены сильные и слабые стороны использования некоторых технологий. Technologies alter the way of living and work of a person. The Internet world network makes it easier to quickly access useful information. Social, cultural and educational competitiveness are influenced by educational technologies that positively influence the style, duration and method of education in higher education institutions. Distance education can be used as a full-fledged self-sufficient form, or as a Supplement to classical training in classrooms. The author considers distance learning as an alternative to the traditional form of teaching in higher education institutions during periods of self-isolation (pandemics, seasonal quarantines), as well as as an addition to traditional forms of education. The problem and positive aspects of using this form are analyzed. Possible formats of training in the conditions of distance education are specified. The strengths and weaknesses of the use of certain technologies are highlighted.

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