scholarly journals Kauser-Wilhelm Gesellschaft: Report to the Royal Society

1939 ◽  
Vol 2 (1) ◽  
pp. 11-11 ◽  
Keyword(s):  
Royal Society ◽  
Research Work ◽  
The Other ◽  
Research Institutes ◽  
Other Hand ◽  
General Impression

The outstanding impression left from our visit is a memory of the extraordinary kindness of the hospitality which we received: in particular the officials of the Kaiser-Wilhelm Gesellschaft took the utmost pains to organize our visit so that we could utilize the time at our disposal as profitably as possible. Our greatest privilege was that of meeting our colleagues at Dahlem and seeing their remarkable group of institutes, which together, are comparable in size to a university. The research work carried out there is world renowned and hence need not be specified in detail. Our general impression was that this organization provided ideal conditions for research. The heads of the institutes could devote their uninterrupted attention to research whilst the equipment and staffing were much superior to those in most universities. On the other hand, the grouping together of the institutes prevented the isolation which is so commonly a trouble with research institutes.

scholarly journals II. Compounds isomeric with the sulphocyanic ethers.—I. On the mustard oil of the ethyl series

1868 ◽  
Vol 16 ◽  
pp. 254-258
Keyword(s):  
Royal Society ◽  
The Other ◽  
Mustard Oil ◽  
Other Hand ◽  
Derivatives Of

The results of my researches on the chloroform-derivatives of the primary monamines, which, as I have shown, are isomeric with the nitriles, could not fail to direct my attention to allied groups of bodies, with the view of discovering similar isomerisms. In a note communicated to the Royal Society some months ago, I expressed the expectations which even then appeared to be justified in the following manner:—“In conclusion, I may be permitted to announce as everv probable the existence of a series of bodies isomeric with the sulphocyanides. Already M. Cloëz has shown that the action of chloride of cyanogen on ethylate of potassium gives rise to the formation of an ethylic cyanate possessing properties absolutely different from those belonging to the cyanate discovered by M. Wurtz. On comparing, on the other hand the properties of the methylic and ethylic sulphocyamdes with those of the sulphocyanides of allyl and phenyl, it can scarcely be doubted that we have here the representatives of two groups entirely different, and that the terms of the methyl- and ethyl-series which correspond to oil of mustard, and to the sulphocyanide of phenyl, still remain to be discovered. Experiments with which I am now engaged will show whether these bodies cannot be obtained by the action of the iodides of methyl and ethyl on sulphocyanide of silver."

Response to Jean-Pierre Chretien

1990 ◽  
Vol 19 (1) ◽  
pp. 41-41
Author(s):  
René Lemarchand
Keyword(s):  
Research Work ◽  
The Other ◽  
Other Hand ◽  
Excellent Work ◽  
The One

My apologies to Mr. Chrétien and to your readers for “developing some simplistic formulas on Burundi” in my quest for “media success.” No such simplistic formulas enter his criticism of my Congressional testimony. On the one hand, I am taken to task for not conceding that my interpretation of the Hutu-Tutsi conflict as a recent phenomenon is the product of Chrétien’s “patient research work” over the last quarter of a century; on the other hand, “some very similar analysis” had appeared in my “excellent work of 1970,” which came out long before Mr. Chrétien embarked on his patient research! Try to figure that one out if you can.

scholarly journals Stock Price Prediction Using Deep Learning Models

2021 ◽  
Author(s):  
Jaydip Sen ◽  
Sidra Mehtab ◽  
Gourab Nath
Keyword(s):  
Deep Learning ◽  
Stock Prices ◽  
Stock Price ◽  
Regression Models ◽  
Research Work ◽  
The Other ◽  
Learning Models ◽  
Stock Price Prediction ◽  
Price Prediction ◽  
Other Hand

Prediction of future movement of stock prices has been a subject matter of many research work. On one hand, we have proponents of the Efficient Market Hypothesis who claim that stock prices cannot be predicted, on the other hand, there are propositions illustrating that, if appropriately modeled, stock prices can be predicted with a high level of accuracy. There is also a gamut of literature on technical analysis of stock prices where the objective is to identify patterns in stock price movements and profit from it. In this work, we propose a hybrid approach for stock price prediction using five deep learning-based regression models. We select the NIFTY 50 index values of the National Stock Exchange (NSE) of India, over a period of December 29, 2014 to July 31, 2020. Based on the NIFTY data during December 29, 2014 to December 28, 2018, we build two regression models using <i>convolutional neural networks</i> (CNNs), and three regression models using <i>long-and-short-term memory</i> (LSTM) networks for predicting the <i>open</i> values of the NIFTY 50 index records for the period December 31, 2018 to July 31, 2020. We adopted a multi-step prediction technique with <i>walk-forward validation</i>. The parameters of the five deep learning models are optimized using the grid-search technique so that the validation losses of the models stabilize with an increasing number of epochs in the model training, and the training and validation accuracies converge. Extensive results are presented on various metrics for all the proposed regression models. The results indicate that while both CNN and LSTM-based regression models are very accurate in forecasting the NIFTY 50 <i>open</i> values, the CNN model that previous one week’s data as the input is the fastest in its execution. On the other hand, the encoder-decoder convolutional LSTM model uses the previous two weeks’ data as the input is found to be the most accurate in its forecasting results.

“ Ten Years' Testing of Model Seaplanes ”

1923 ◽  
Vol 27 (149) ◽  
pp. 224-243
Author(s):  
G. S. Baker
Keyword(s):  
Experimental Work ◽  
Royal Society ◽  
General Meeting ◽  
National Physical Laboratory ◽  
The Other ◽  
Experimental Tank ◽  
Know How ◽  
Other Hand ◽  
Physical Laboratory ◽  
Hull Design

An Ordinary General Meeting- of the Society was held at the Royal Society of Arts, on Thursday, February ist, 1923, Professor L. Bairstow in the chair.The Chairman, in opening- the proceedings, said that Mr. G. S. Baker, O.B.E., of the National Physical Laboratory, would deal with flying boats and seaplanes. He would deal with the hull and its design, that part of the seaplane which differentiates it from the aeroplane. That subject had been touched on very lightly by Major Rennie at the previous meeting of the Society, in view of the present paper by Mr. Baker.Mr. Baker had begun work in 1912 on the problems of hull design, at a time when nothing of a definite nature was known; a few individual experiments had been carried out, but there was no systematised knowledge at all at that time. From that state of ignorance a great deal of experimental work had now rescued us. He did not know how far Mr. Baker would stress the point, but it was quite clear, from the investigation of certain accidents to seacraft, that there were fundamental differences in the behaviour of seaplane hulls on the water, differences which had a great deal of effect on the risk of flying-. For instance, if one type of hull was such that when the plane rose in the air it stalled, then all the aerodynamical consequences of stalling- followed, and there was difficulty. On the other hand, it appeared that we had a type of flying- boat which did not make the plane stall on getting into the air, and consequently if it came back to the water it was still controlled. For this type of development, which he believed really dated back to the C.E.i, we were mainly indebted to Mr. Baker and his associates at the National Physical Laboratory, and to the generosity of Sir Alfred Yarrow in placing such a magnificent piece of apparatus as the experimental tank at the disposal of the nation.Mr. Baker then read his paper on “ Ten Years’ Testing of Model Seaplanes.”

scholarly journals XXVIII. On the forces caused by the communication of heat between a surface and a gas; and on a new photometer

1876 ◽  
Vol 166 ◽  
pp. 725-735 ◽  
Keyword(s):  
Kinetic Theory ◽  
Solid Surface ◽  
Royal Society ◽  
The Other ◽  
Other Hand ◽  
Careful Investigation ◽  
The Way

In a paper read before the Royal Society, April 1874, I pointed out that the communication of heat from a solid surface to a gas, whether accompanied by evaporation or not, must, according to the kinetic theory, be attended by a reactionary force equi­valent to an increase in the pressure of the gas on the surface, and, conversely, when heat is communicated from the gas to the surface the pressure against the surface is diminished; and I also suggested that these forces are the probable cause of the motion, resulting in some way from radiation, which Mr. Crookes had brought into such pro­minent notice. Since the publication of this paper neither my conclusions as to the existence of these “heat reactions,” nor the reasoning by which I supported them, have been controverted or even questioned; but, on the other hand, they have received important confirmation. The results at which Professors Tait and Dewar arrived after a careful investigation fully bear out my conclusions, not only as to the existence of the forces, but also as to the way in which they explain Mr. Crookes’s experiments.

XXVIII. On the nature of the forces concerned in producing the greater magnetic disturbances

1862 ◽  
Vol 152 ◽  
pp. 621-638 ◽  
Keyword(s):  
Royal Society ◽  
The Other ◽  
Iron Core ◽  
Secondary Currents ◽  
The Earth ◽  
Other Hand ◽  
Previous Communication ◽  
Abrupt Changes ◽  
Magnetic Disturbances

1. In a previous communication submitted to the Royal Society on June 28th, 1861, and since published in their Transactions, I ventured to make a suggestion regarding the nature of that connexion which subsists between magnetic disturbances, earth-currents, and auroras. In this hypothesis the earth was viewed as similar to the soft iron core of a Ruhmkorff’s machine, in which a primary disturbing current was supposed to induce mag­netism. Earth-currents and auroras, on the other hand, were viewed as induced or secondary currents, caused by the small but abrupt changes which are constantly taking place in the strength of the primary disturbing current, these changes being very much heightened in effect by the action of the iron core, that is to say, of the earth.

scholarly journals II. Note on legendre’s coefficients

1878 ◽  
Vol 27 (185-189) ◽  
pp. 381-383
Keyword(s):  
Positive Integer ◽  
Royal Society ◽  
The Other ◽  
Definite Integral ◽  
Other Hand

In the “Proceedings of the Royal Society,” vol. xxvii, pp. 63-71, Professor Adams has given, by an inductive process, the development of the product of any two of Legendre’s Coefficients in a series of the Coefficients; from this is immediately deduced the value of the integral between the limits -1 and +1 of the product of any three of the Coefficients. On the other hand, if we know the value of this definite integral, we can immediately deduce the development of the product of any two of the Coefficients. Thus it may be of interest to give a brief investigation of the value of the definite integral. I follow the notation adopted by Professor Adams. The formula to be established is ∫ 1 -1 P m P n P p dμ = 2/2 s + 1 A ( s - m ) A ( s - n ) A ( s - p ) / A( s ), where 2 s = m + n + P , and the functional symbol A( r ) is thus defined: if r is a positive integer A ( r ) = 1. 3. 5. . (2 r - 1) /1. 2. 3. . r , and in all other cases A ( r ) is to be considered zero, except when r = 0, and then it is to be considered = 1.

scholarly journals Notes on some Tropical Diseases in Palestine

1914 ◽  
Vol 14 (1) ◽  
pp. 1-11 ◽  
Author(s):  
E. W. G. Masterman
Keyword(s):  
Enteric Fever ◽  
Medical Faculty ◽  
The Other ◽  
Tropical Diseases ◽  
Malarial Infection ◽  
Other Hand ◽  
General Impression ◽  
The One ◽  
Typhus Fever

Until recently there has been a general impression among a large proportion of the local medical faculty in Jerusalem that enteric fever was very uncommon and that typhus fever was practically unknown. As we are now basing our diagnosis of malaria increasingly upon the discovery of malarial parasites in the blood, we find that while on the one hand many of the most severe malarial infections, especially those with subtertian parasites, have little or no pyrexia, on the other hand, many cases which we should have called “ remittent malaria” or “malignant malaria” or “typho-malaria” in years gone by, are proving to be of other origin. A case of remittent pyrexia which does not yield in three, or at the outside five, days to efficient dosing with quinine is not in our experience a pure malarial infection.

Brighter than how many suns? Sir Isaac Newton’s burning mirror

1989 ◽  
Vol 43 (1) ◽  
pp. 31-51 ◽  
Keyword(s):  
Royal Society ◽  
Scientific Literature ◽  
Radiant Heat ◽  
The Other ◽  
Sir Isaac Newton ◽  
Isaac Newton ◽  
Other Hand ◽  
The Press ◽  
The Subject ◽  
Hearsay Evidence

There are a number of references in the scientific literature to a burning mirror designed by Sir Isaac Newton (1). Together, they record that it was made from seven separate concave glasses, each about a foot in diameter, that Newton demonstrated its effects at several meetings of the Royal Society and that he presented it to the Society. Nonetheless, neither the earliest published list of instruments possessed by the Royal Society nor the most recent one mentions the burning mirror; the latest compiler does not even include it amongst those items, once owned, now lost. No reference to the instrument apparently survives in the Society’s main records. It is not listed by the author of the recent compendium on Newton’s life and work (2). There is, however, some contemporary information still extant (Appendix 1). Notes of the principles of its design and some of its effects are to be found in the Society’s Journal Book for 1704; some of the dimensions and the arrangement of the mirrors are given in a Lexicon published by John Harris which he donated to the Royal Society at the same meeting, 12 July 1704, at which Newton gave the Society the speculum. The last reference in the Journal Book is dated 15 November that year, when Mr Halley, the then secretary to the Society, was desired to draw up an account of the speculum and its effects (3). No such account appears to have been presented to the Royal Society. There is no reference in Newton’s published papers and letters of his chasing Halley to complete the task, nor is there any mention of it in the general references to Halley. The latter was, of course, quite accustomed to performing odd jobs for Newton; that same year he was to help the Opticks through the press. The only other contemporary reference to the burning mirror, though only hearsay evidence since Flamsteed was not present at the meeting, is in a letter the latter wrote to James Pound; this confirms that there were seven mirrors and that the aperture of each was near a foot in diameter (4). Because John Harris gave his Dictionary to the Royal Society in Newton’s presence, it is reasonable to assume that his description is accurate. As Newton would hardly have left an inaccurate one unchallenged, then, belatedly, the account desired of Mr Halley can be presented. In some respects, the delay is advantageous, since the subject of radiant heat and its effects, although already by Newton’s period an ancient one, is today rather better understood. On the other hand, some data has to be inferred, that could have been measured, and some assumptions made about Newton’s procedures and understanding that could have been checked (5).

The ‘reading’ of papers at meetings of Royal Society

1939 ◽  
Vol 2 (1) ◽  
pp. 25-27
Keyword(s):  
Royal Society ◽  
Great Majority ◽  
Good Deal ◽  
Well Being ◽  
The Other ◽  
Field Of Study ◽  
Other Hand ◽  
The Way

THE following letter has been received from the Secretaries of the Society for publication in the hope that it may provoke discussion on a matter of some importance to the well-being of the Society. To the Secretaries of the Royal Society. Dear Sirs, In recent years a good deal of dissatisfaction has been expressed in the Society with the way in which papers have been ‘ read ’ before it. I do not think that those who read the papers have been entirely to blame, since, as far as I know, it has never been properly considered what the purpose of the reading is. It is easy to say that when someone has made an important discovery he is to tell the Society about it, but in fact hardly one paper in a hundred of those communicated is of this class. In the remaining ninety^nine cases the paper will consist of a small advance in some field of study, often very specialized study, of which the great majority of the audience is largely ignorant, and this evidently calls for different treatment. In giving his account, the speaker is usually embarrassed by the fact that among his audience there are a few experts in his subject, while the remainder have only a rather vague knowledge of it, and he (especially if he is a young man) tends to address the experts. Moreover, he is apt to assume that he may refer to any previous work in his subject as being familiar to the whole audience. The result is that he is incomprehensible to the great majority, and on the other hand the experts can hardly be expected to pronounce critical opinions on a paper which they have not seen in detail. No useful purpose on either side is achieved by this manner of reading papers.

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