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1.
AbstractIn the second part of the paper on this subject in the last issue (30, 483) the references to the relative angular and linear closures are rather misleading. Mr Clendinning points out that the probable angular error at a station must be considered; the mean error is clearly different. 相似文献
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《The Cartographic journal》2013,50(4):296-303
AbstractAlthough Italian composite atlases of the 16th century are seldom mentioned in the literature on historical cartography, these collections are very important for preserving a large number of maps that might otherwise be lost forever. With this paper we want to realize a few things: bringing those atlases back into the spotlight, focusing attention on the need for more research and collaboration on this subject, and last but not least we will reveal the story and the content of a composite atlas not known yet to most authors who are trusted with the subject. 相似文献
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《测量评论》2013,45(25):140-151
AbstractThe subject of the training of European surveyors has received a great deal of attention in the course of the last two Empire Conferences, but little or no mention has been made of the native surveyor, his education, work, and prospects. The subject is very important, however, and the account of the training of Africans for the N. Rhodesia Survey, which appeared in vol. iii, no. 21 of the Empire Survey Review, was read with considerable interest. It may not be out of place, therefore, to introduce this paper on the means adopted in Malaya to recruit and train an efficient staff of subordinates or “Technical Assistants” as they are termed locally. 相似文献
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《测量评论》2013,45(52):242-245
AbstractMy attention has recently been drawn to an article by G. H. Menzies (E.5.R., vi, 46, 474) on this subject. The present note is intended to point out improvements in the Anér method, which he favours, and to refute some of his criticisms of the Relaxation method. References are to page and table numbers in Menzies's paper. 相似文献
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《测量评论》2013,45(31):38-50
AbstractOn page 480 of the last number of this Review Capt. E. H. Thompson, R.E., in his paper on “The Condition for the Construction of a Conformal Projection”, deals with a subject which, in the opinion of the present writer, is rather insufficiently explained or dealt with in any text-book on Geodesy or on Map. Projections that he has seen. The explanations or proofs usually given are probably adequate if it can be assumed that the reader has a fairly good knowledge of the properties of functions of the complex variable. 相似文献
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《测量评论》2013,45(83):224-230
AbstractMr. A. J. Morley has contributed a series of articles in the Review (E.S.R., iv, 23, 16; iv, 25, 136 and vi, 40, 76) on the adjustment of trigonometrical levels and the evaluation of the coefficient of terrestrial refraction with a view to ascertaining how other Colonies and Dominions deal with these problems. This object is very commendable as several problems concerning both the observational and theoretical sides arise in height determinations, regarding which there is not much guidance in the usual treatises on the subject. 相似文献
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《测量评论》2013,45(74):162-174
AbstractThe comprehensive paper on the suspension of tapes by M. Hotine in the January, 1939, issue of the Empire Survey Review (v, 31, 2) did not contain any reference to this question, as was pointed out by A. J. Morley in a letter published on page 261 in the same volume (v, 34, 261). A brief analysis has been made by F. Yates of the theoretical effects of pulley eccentricity and misalignment (“Gold Coast Survey Department Records” VoL III, 1931, page 43) but I have not seen any further reference to the subject and have recently experienced the effects of such a defect in our own apparatus, so the followingnotes nlay be of interest. Before proceeding to details I will describe briefly those parts of the apparatus which are considered here and give a short summary of the whole paper. 相似文献
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《The Cartographic journal》2013,50(1):40-42
AbstractElectronic atlases possess certain advantages over their paper counterparts. However these are not achieved lightly because of the considerable differences between these media, particularly in terms of cartographic design. These problems, and the process of converting an existing atlas of marine information into an electronic version, are the subject of this paper. 相似文献
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《测量评论》2013,45(54):311-314
AbstractThere has always been a marked difference of opinion on the relative merits of the methods of bearings and of angles as applied to triangulation, though it is probable that the majority of writers prefer the method of bearings for first-order work. The subject was mentioned in a recent issue of this Review (vii, 47, 19). 相似文献
10.
D. Brandes 《The Cartographic journal》2013,50(2):172-176
AbstractThis paper discusses the current state of perceptual research concerning cartographic symbols. Initial discussion treats the theories and reasons behind the present popularity of perceptual studies in cartography. It is followed by a summary of the printed materials on this topic appearing in several prominent English language cartographic publications. A person who is newly entering the area of perceptual research in cartography may use this paper as a quick source for obtaining background in the area and thereby save valuable time from sifting through individual sources for information regarding what has already been done. Additional convenience is provided for the reader by the grouping of references according to the subject matter which they concern. 相似文献
11.
AbstractAlthough the title of this paper may appear to some to refer to a rather humdrum subject which hardly deserves much serious thought or consideration, it is the writer's experience that the vital necessity for keeping clear records of survey work in a permanent form in which they can easily be referred to at any future time is not always sufficiently appreciated by those whose duties do not involve constant or frequent reference to the records of old work. Accordingly, the following notes and suggestions, which are based on practical experience, may be of service in drawing attention to a matter which is really of great practical importance. 相似文献
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《测量评论》2013,45(79):16-18
AbstractPerhaps the most important requirement in any air survey is that the ground surveyed points used as a basis for controlling the photography should be correctly identified on the photographs. In the writer's experience more difficulties and delays have been caused by misidentifications of these points in the field than perhaps from any other cause, and yet very little has been written on this important subject, and there are no generally recognised methods of point identification. In this article a system of point identification is described which the writer has used with success in certain types of country, and it is hoped that the article may lead to more contributions on the subject. 相似文献
14.
《测量评论》2013,45(10):226-238
AbstractThe Stereographic Projection, owing to the ease and accuracy with which it can be drawn on a small scale, offers natural attractiveness for the treatment of spherical geometry upon a plane surface. It would therefore be rash for a present-day writer to claim as novel what may well be an infringement of patent rights morally belonging to Hipparchus, who possibly knew most of what is worth knowing about the matter 2,000 years ago. However, since a fairly extensive delving into writings upon the subject has not brought to light anything quite on the lines here put forward, it may be worth while to systematize in this paper some processes which the present writer has found practically useful for some time past. 相似文献
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《测量评论》2013,45(84):282-283
Abstract1. The explanation of this fundamental operation in setting up surveying instruments, as well as of the theory of the level on which it is based, is, in my opinion, not sufficiently explained in text-books. I came across the problem while lecturing on the theory of surveying instruments. Below is an extract of the notes I made on the subject, which may have a didactical interest. 相似文献
18.
《测量评论》2013,45(88):84-85
AbstractIt is hardly surprising that the more elementary aspects of a subject come to be so taken for granted that the learned authors of text-books fall into the error of oversimplifying them. As a result, the student is very often given a distorted idea of what is of fundamental importance. 相似文献
19.
《测量评论》2013,45(37):398-409
AbstractDid you ever ask yourself the question, “What are the personal reactions of research workers before, during and after a successfully completed investigation?” For instance—what were the feelings of the discoverers of insulin, of early maturing Marquis wheat; what were the reactions of those who conceived and built the Quebec bridge, of those who perfected the application of aerial photography to mapping and other sciences ; what were the emotions of those who conceived the echo-sounding machine, of such advantage to the operations of hydrographers and mariners? The answer to one such question is the subject of this paper. 相似文献
20.
Field Techniques in Remote Sensing: Learning by Doing 总被引：1，自引：0，他引：1
Donald C. Rundquist 《国际地球制图》2013,28(1):85-90
Abstract The paper summarizes one professor's observations and resulting approach to teaching a semester‐long course on the subject of field techniques as they relate to remote‐sensing campaigns. The text describes how a “learning‐by‐doing strategy” is applied to such a course. More specifically, the paper describes how the instructor requires students to design, construct, and actually implement “hardware solutions” to problems involving collection of spectral (and ancillary) data in the field. Pupils must test their developed methodologies and “technological creations” with regard to a focused research problem undertaken in a difficult field setting during a week‐long outdoor experience. The students are expected to evaluate, and possibly modify, their methods and procedures “on‐the‐fly.” Individual group research problems, methods, and hardware solutions are briefly described, and selected student evaluations of the experience are provided. 相似文献