scholarly journals 2. On the Application of Angström's Method to the Conductivity of Wood

1875 ◽  
Vol 8 ◽  
pp. 481-481
Author(s):  
C. G. Knott ◽  
A. Macfarlane
Keyword(s):  
Natural Philosophy ◽  
The Other ◽  
Thermo Electric ◽  
Fine Wire ◽  
Series Of Experiments ◽  
The University ◽  
Made In

This was an account of a series of experiments made in the Natural Philosophy Laboratory of the University, to test the applicability of Angström's method of periodic variations of temperature to the determination of low conductivity. The wood was cut into discs of a standard thickness, and these were very tightly secured together, after the interposition of copper-iron thermo-electric junctions (of very fine wire). One series of discs was cut parallel, the other perpendicular, to the fibre. The results were obtained very easily, and accorded satisfactorily with those obtained by more laborious methods.

scholarly journals I. Experiments made to determine surface-conductivity for heat in absolute measure

1872 ◽  
Vol 20 (130-138) ◽  
pp. 90-93 ◽  
Keyword(s):  
Atmospheric Temperature ◽  
Limited Range ◽  
The Other ◽  
Thermo Electric ◽  
Metallic Contact ◽  
Physical Laboratory ◽  
Absolute Measure ◽  
William Thomson ◽  
The University ◽  
Made In

The experiments described in this paper were made in the Physical Laboratory of the University of Glasgow, under the direction of Sir William Thomson, during the summer of 1871. A set of similar experiments were made in 1865 ; but being merely preliminary, carried on by different individuals, and embracing only a limited range of temperatures, it is thought unnecessary to allude further to them here. A copper ball, 2 centimetres radius, having a thermo-electric junction at its centre, was suspended in the interior of a double-walled tin-plate vessel which had the space between the double sides filled with water at the atmospheric temperature, and the interior coated with lamp-black. The other junction was in metallic contact with the outside of the vessel, and the circuit was completed through the coil of a mirror galvanometer. One junction was thus kept at a nearly constant temperature of about 14° Cent., while the other had the gradually diminishing temperature of the ball.

scholarly journals XI. Determination of the number of electrostatic units in the electromagnetic unit made in the Physical Laboratory of Glasgow University

1873 ◽  
Vol 163 ◽  
pp. 409-427
Keyword(s):  
Natural Philosophy ◽  
Absolute Measurement ◽  
Assistant Professor ◽  
Harvard College ◽  
Physical Laboratory ◽  
Series Of Experiments ◽  
Fundamental Units ◽  
Made In

The object of the following paper is to describe observations made to determine the relation between the fundamental units in the electromagnetic and electrostatic systems of absolute measurement. These observations were made at intervals from 1870 to 1872, first in the Physical Laboratory of the Old College, Glasgow, and afterwards in that of the New College. In the former series of experiments I had the advantage of the assistance of the late William Leitch, of Glasgow. The latter series I made chiefly with the assistance of George A. Hill, M. A., now Assistant Professor of Natural Philosophy in Harvard College, U. S.

Tâches, interaction et présence à distance

2021 ◽  
pp. 65-74
Author(s):  
Christelle HOPPE
Keyword(s):  
International Students ◽  
Learning Experience ◽  
The Other ◽  
Health Crisis ◽  
Pedagogical Choices ◽  
The One ◽  
Teaching Learning ◽  
The University ◽  
Made In

This article presents the highlights of the learning experience within the teaching-learning scheme of French as an additional language as it was proposed to international students at the university to ensure pedagogical continuity during the health crisis between April and June 2020. Through vignettes that give an overview of the course, it proposes, on the one hand, to reflect on the pedagogical choices that were made in order to measure their effects effectively. On the other hand, it looks at the role of the tasks and the way in which they stimulate interaction, articulate or organise the cognitive, conative and socio-affective presence at a distance in this particular context. What emerges from the experience is that the flexible articulation of a set of tasks creates an organising framework that helps learners to shape their own curriculum while supporting their engagement. Overall, the pedagogical organisation of the device has led to potentially beneficial creative and socio-interactive use.

scholarly journals Markov chains and the determination of fair premiums

1967 ◽  
Vol 4 (3) ◽  
pp. 265-268 ◽  
Author(s):  
Stefan Vajda
Keyword(s):  
Stochastic Process ◽  
Markov Chains ◽  
Stochastic Processes ◽  
Mathematical Theory ◽  
The Other ◽  
Main Stream ◽  
Other Hand ◽  
Pure Mathematics ◽  
The University

The relationships between actuarial and pure mathematics are curious. Actuaries have contributed to the development of mathematical theory: it is sufficient to mention, as examples, Fredholm of an earlier, and Cramér of a more recent generation. Scandinavian mathematicians, in particular, have been concerned with a very special type of stochastic process, reflected in the collective theory of risk, and the work of Philipson, Ammeter and others in this field is well known to readers of this Bulletin. However, the main stream of the theory of stochastic processes has little contact with actuarial applications.On the other hand, many actuaries have studied and assimilated pure mathematics and have thrown light on actuarial matters by describing their own preoccupations in the terminology of modern, often abstract, mathematics. E. Franckx is one of their number.The Instituto di Matematica Finanziaria of the University of Trieste (Faculty of Economics and Commerce) has published a booklet entitledEssai d'une théorie opérationnelle des risques Markoviens which contains three lectures delivered by Professor Franckx in Trieste and a contribution which he presented to the 17th Congress of Actuaries, held in London in 1964.

ACCURATE DEPTH DETERMINATION OF THE VELOCITY SURVEY WELL PHONE

Geophysics ◽  
1961 ◽  
Vol 26 (1) ◽  
pp. 100-100
Author(s):  
R. P. Nolting
Keyword(s):  
The Other ◽  
Log Data ◽  
Survey Report ◽  
Depth Determination ◽  
Depth Curve ◽  
Actual Depth ◽  
Check Level ◽  
Made In

Many velocity surveys have been shot in which the actual depth of the well phone was in question at one or more of the levels shot in the borehole. The computed time to the questioned level would not fit the other data obtained from the velocity survey, i.e., the data from the questioned level would not fit the time‐depth curve within reason or, more recently, it could not properly be fitted to the corrected continuous velocity log data. If the “first break” of the questioned level could not be repicked to conform to the other data, a notation was made in the velocity survey report that the depth of the well phone was probably in error. Although this assumption was correct in many cases, there are various other reasons why data from one check level should not fit the rest of the data.

scholarly journals Experiments for investigating the cause of the coloured concentric rings, discovered by Sir Isaac Newton , between two object-glasses laid upon one anther

1832 ◽  
Vol 1 ◽  
pp. 264-268
Keyword(s):  
Focal Length ◽  
Considerable Extent ◽  
The Other ◽  
Sir Isaac Newton ◽  
Isaac Newton ◽  
Series Of Experiments ◽  
Made In

The account, given by Sir Isaac Newton, of these coloured arcs, appeared to Dr. Herschel highly interesting, but he was not satisfied with the explanation of them. Sir Isaac Newton accounts for the production of the rings, by ascribing to the rays of light certain fits of easy transmission and alternate reflection; but this hypothesis seemed not easily to be reconciled with the minuteness and extreme velocity of the particles of light. With the view of inquiring further into the cause of these phenomena, Dr. Herschel, so long since as the year 1792, borrowed of this Society the two object-glasses of Huygens, one of 122, and the other of 170 feet focal length. Notwithstanding various interruptions, the series of experiments, made in the course of this time, has been carried to a considerable extent; and Dr. Herschel thinks the conclusions that may be drawn from them, sufficiently well supported to point out several modifications of light that have been totally overlooked, and others that have not been properly discriminated.

Determination of the stress concentration in the corner point of the wedge-shaped region reinforced by a more rigid thin coating

2020 ◽  
Vol 26 (1) ◽  
pp. 80-89
Author(s):  
AN Soloviev ◽  
BV Sobol ◽  
EV Rashidova ◽  
AI Novikova
Keyword(s):  
Boundary Conditions ◽  
Corner Point ◽  
Theory Of Elasticity ◽  
The Other ◽  
Thin Coating ◽  
Various Boundary Conditions ◽  
Singular Behaviour ◽  
Isotropic Theory ◽  
Made In

We analysed the problem of determining the exponents in the asymptotic solution of the isotropic theory of elasticity problem at the top of the wedge-shaped region where its sides (or one of them) are supported by a thin coating and lean without friction on the rigid bases. On the other side of the wedge-shaped region, it is assumed that there are various boundary conditions, including when there is a thin coating. Mathematically, the problem reduces to the problem of determining the roots of transcendental characteristic equations arising from the condition for the existence of a nontrivial solution of a system of the linear homogeneous equations. The characteristics of the stress tensor components have been determined for the various combinations of boundary conditions and physical and geometric parameters. The qualitative conclusions are made. In particular, we have established the combinations of the values of these parameters at which the singular behaviour of stresses arises.

Streamwise vortices and transition to turbulence

1994 ◽  
Vol 264 ◽  
pp. 185-212 ◽  
Author(s):  
James M. Hamilton ◽  
Frederick H. Abernathy
Keyword(s):  
Streamwise Velocity ◽  
Transition To Turbulence ◽  
Streamwise Vortices ◽  
Single Vortex ◽  
Transitional Flows ◽  
Vortex Interactions ◽  
Crossflow Velocity ◽  
Series Of Experiments ◽  
Made In

A series of experiments was conducted to determine the conditions under which streamwise vortices can cause transition to turbulence in shear flows. A specially designed obstacle was used to produce a single vortex in a water-table flow, and the design of this obstacle is discussed. Laser-Doppler velocimetry measurements of the streamwise and crossflow velocity fields were made in transitional and non-transitional flows, and flow visualization was also used. It was found that strong vortices (vortices with large circulation) lead to turbulence while weaker vortices do not. Determination of a critical value of vortex strength for transition, however, was complicated by ambiguities in calculating the vortex circulation. The profiles of streamwise velocity were found to be inflexional for both transitional and non-transitional flows. Transition in single-vortex and multi-vortex flows was compared, and no qualitative differences were observed, suggesting no significant vortex interactions affecting transition.

scholarly journals Penerapan Metode SAW dan Fuzzy Dalam Sistem Pendukung Keputusan Penerimaan Beasiswa

2016 ◽  
Vol 3 (2) ◽  
pp. 89 ◽  
Author(s):  
Risa Helilintar ◽  
Wing Wahyu Winarno ◽  
Hanif Al Fatta
Keyword(s):  
Decision Making ◽  
Decision Support ◽  
The Other ◽  
Decision Making Process ◽  
Study Program ◽  
Fuzzy Database ◽  
The University ◽  
To Receive ◽  
Selection Of

Database Model Fuzzy Tahani dan SAW merupakan saatu metode yang dapat digunakan pada proses pengambilan keputusan. Sesuai dengan peraturan pihak Intansi yang memberikan beasiswa unuk memperoleh beasiswa, maka diperlukan kriteria-kriteria untuk menentukan siapa yang akan terpilih untuk menerima beasiswa. Pembagian beasiswa dilakukan untuk membantu penentuan dalam merekomendasikan seseorang yang layak menerima beasiswa maka dibutuhkan sistem pendukung keputusan. Penelitian ini membahas tentang seleksi penerimaan beasiswa dengan metode Fuzzy Database Tahani dan SAW. Penelitian ini dapat membantu KaProdi Teknik Informatika maupun Prodi-Prodi lain di UNP kediri untuk menentukkan penerima beasiswa. Penelitian ini bertujuan untuk memadukan metode Fuzzy dan SAW dengan ketentuan dan kriteria yang sudah ditentukan oleh pihak Universitas. Sistem yang akan dibuat harus mampu menentukan perangkingan untuk rekomendasi penerima beasiswa. Penelitian menggunakan metode fuzzy yaitu untuk menentukan nilai input ke SAW sebagai dasar nilai input. Hasil yang didapat pada penelitian ini yaitu berupa rangking dan selanjutnya akan dibuat rekomendasi untuk penerima beasiswa.Database fuzzy Tahani and SAW is the other, a method that can be used in the decision making process. In accordance with the regulation which provides scholarships instance transform and obtaining scholarships, the necessary criteria to determine who will be selected to receive a scholarship. The scholarship division. To assist in the determination of a person recommend the eligible then takes a decision support system. This study discusses the selection of scholarship acceptance by Fuzzy Database Tahani and SAW. This research can help leadership courses Informatics and other study program-UNP Kediri to determine recipients. This research aims to integrate Fuzzy and SAW with the rules and criteria set by the university. The system being designed to be able to determine rankings to recommendation recipients. Research using fuzzy method is to determine the value of the input to the SAW as the basis of input values. The results obtained in this study in the form of ranking and then make a recommendation to the receiving scholarships

scholarly journals La educación popular una apuesta política que se recrea en los procesos educativos desde el trabajo colectivo de los educadores populares del cauca

2021 ◽  
Vol 2 (4) ◽  
pp. 5008-5016
Author(s):  
Stella Pino Salamanca ◽  
Robert Alfredo Euscátegui Pachón
Keyword(s):  
Collaborative Work ◽  
Popular Education ◽  
The Other ◽  
Educational Institutions ◽  
Education Group ◽  
Doing School ◽  
The University ◽  
Day By Day ◽  
Made In ◽  
Trabajo Colaborativo

El presente artículo hace parte de las reflexiones realizadas en el marco del proyecto de investigación “Proyecto Internacional de Educación Popular” que desarrollo el Grupo de Educación Popular de la Universidad del Cauca, en el cual se evidencian las otras formas de hacer educación y de construir pedagogías populares a partir del reconocimiento de los saberes propios, como de las construcciones participativas que rompen con la forma tradicional de ver y entender la educación, para así, rehacerse y reconfigurarse a partir de diversas experiencias que se nutren al interior del trabajo adelantado por el Colectivo de Educadores Populares del Cauca. A partir del trabajo que se adelanta en la región del Cauca Colombia, se evidencia que es posible la constitución de otra escuela, de otras pedagogías, así mismo, el reconocimiento y abordaje a las problemáticas que aquejan a las comunidades, las cuales traen una historia y un presente cargado de inequidades, opresiones, incertidumbres y violencias que complejizan cada día la tarea de ser maestros. Estas apuestas pedagógicas populares se constituyen a partir del trabajo colaborativo y de diálogo de saberes en un andar, que desde el Colectivo de educadores populares del Cauca se viene gestando; trabajo liderado por el Grupo de Educación Popular de la Universidad del Cauca y la Asociación de Institutores y trabadores de la educación. Es un colectivo que se hace día a día desde los principios de la Educación Popular y que recrea las otras formas de hacer educación, de hacer escuela.   ABSTRACT This article is part of the reflections made in the framework of the research project "International Popular Education Project" carried out by the Popular Education Group of the University of Cauca, in which the other ways of doing education and building are evident. Popular pedagogies based on the recognition of their own knowledge, as well as participatory constructions that break with the traditional way of seeing and understanding education, in order to remake and reconfigure themselves from various experiences that are nourished within the work carried out by the Collective of Popular Educators of Cauca. From the work carried out in the region of Cauca Colombia, it is evident that it is possible to establish another school, other pedagogies, as well as the recognition and approach to the problems that afflict the communities, which bring a history and a present full of inequities, oppressions, uncertainties, violence that make the task of being teachers more complex every day. These popular pedagogical bets are constituted from the collaborative work and dialogue of knowledge that is recreated in a walk that from the Collective of popular educators of Cauca has been developing; work led by the Popular Education Group of the University of Cauca and the Association of Educational Institutions and workers. It is a collective that is done day by day from the beginnings of Popular Education and that recreates the other ways of doing education, of doing school.

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