DEEP ELECTRICAL PROSPECTING—A DISCUSSION

Geophysics ◽  
1948 ◽  
Vol 13 (1) ◽  
pp. 92-97
Author(s):  
Sulhi Yüngül
Keyword(s):  
Apparent Resistivity ◽  
The Other ◽  
New Method ◽  
Depth Of Penetration ◽  
Method Of Calculation ◽  
Comprehensive Knowledge ◽  
Electrical Sounding ◽  
The Subject ◽  
Electrical Prospecting

In two papers published in Geophysics, one in the October, 1944, issue and the other in October, 1946, a system and method of calculation, called “Resistolog” method, was presented. The object of the Resistolog method is to eliminate the effects of superficial inhomogeneities which are the most troublesome obstacles in interpreting electrical sounding results in exploring deep, horizontal discontinuities. The following is a discussion of the papers mentioned above, mainly of the subject of (1) the apparent‐resistivity formula derived for use with the Resistolog configuration, (2) determination of inflectional points on apparent resistivity curves, (3) depth of penetration, and (4) distortion caused by the “far electrode.” A new method to determine inflectional points is also given. This paper includes a comprehensive knowledge about the forementioned papers and the reader may not have to refer to them.

XXVI.—A New Method of determining the Degree of Twist in Single Threads

1907 ◽  
Vol 27 ◽  
pp. 264-268 ◽  
Author(s):  
Thomas Oliver
Keyword(s):  
Opposite Direction ◽  
The Other ◽  
New Method

The determination of the degree of twist in a folded or ply thread composed of two or more strands is an easy matter. It is merely necessary to stretch the thread between two clamps, one being fixed and the other forming the end of a bar which can be rotated about its axis. A counter is attached to indicate the number of rotations. Rotating the thread in the opposite direction to its twist ultimately brings the singles parallel to each other. This point is easily observed. If we apply this method to single yarns we are at once confronted with the difficulty that the fibres constituting the yarn cannot be reduced to exact parallelism with each other.

A New Method and Automatic Generation for Dynamic Analysis of Complex Planar Mechanisms Based on the Ordered Single-Opened-Chains

1994 ◽  
Author(s):  
Jian-Qing Zhang ◽  
Ting-Li Yang
Keyword(s):  
Dynamic Analysis ◽  
Dynamic Equation ◽  
Automatic Generation ◽  
The Other ◽  
New Method ◽  
Complex Mechanism ◽  
Planar Mechanisms ◽  
Spatial Mechanisms ◽  
General Dynamic

Abstract This work presents a new method for kinetostatic analysis and dynamic analysis of complex planar mechanisms, i.e. the ordered single-opened-chains method. This method makes use of the ordered single-opened chains (in short, SOC,) along with the properties of SOC, and the network constraints relationship between SOC,. By this method, any planar complex mechanism can be automatically decomposed into a series of the ordered single-opened chains and the optimal structural decomposition route (s) can be automatically selected for dynamic analysis, the paper present the dynamic equation which can be used to solve both the kinetostatic problem and the general dynamic problem. The main advantage of the proposed approach is the possibility to reduce the number of equations to be solved simultaneously to the minimum, and its high automation as well. The other advantage is the simplification of the determination of the coefficients in the equations, and thus it maybe result in a much less time-consuming algorthem. The proposed approach is illustrated with three examples. The presented method can be easily extended to the dynamic analysis of spatial mechanisms.

scholarly journals Optimisation of the prescription for trans-tibial (TT) amputees

1997 ◽  
Vol 21 (3) ◽  
pp. 168-174 ◽  
Author(s):  
A. Cortés ◽  
E. Viosca ◽  
J. V. Hoyos ◽  
J. Prat ◽  
J. Sánchez-Lacuesta
Keyword(s):  
Quantitative Method ◽  
Clinical Information ◽  
Normal Subjects ◽  
Individual Variability ◽  
Classification Criteria ◽  
The Other ◽  
Human Gait ◽  
Factors Influencing ◽  
The Subject

The great diversity of prosthetic mechanisms available nowadays leads to the question of which type of artificial foot would be the most advisable for a particular person. To answer correctly, it is necessary to establish, in an objective way, the performance of each type of prosthetic mechanism. This knowledge is obtained by means of the study of the subject-prosthesis interaction, both in static and dynamic conditions. This paper, based on the analysis of 8 transtibial (TT) amputees, presents a quantitative method for the study of human gait which allows the determination of the influence of four different prosthetic ankle-foot mechanisms (SACH, Single-axis, Greissinger and Dynamic) on gait. To do this, 1341 gait trials at different cadences were analysed (383 with normal subjects and 958 with amputees, using the four prosthetic feet under study). From all the variables available for study only those which offered interpretable clinical information were chosen for analysis. A total of 18 variables (kinetic, kinematic and time-related) were selected. A covariance analysis (ANOVA) of these variables was made, which showed that the factors influencing TT amputee gait were, in order of importance, cadence and leg studied (sound or prosthetic), inter-individual variability and, finally, the prosthetic mechanism used. When looking at the performance during gait of the 4 prosthetic mechanisms studied it can be observed that there are similarities in the kinetic study between SACH and Dynamic feet on one hand and Single-axis and Greissinger feet on the other. These results seem to support the classification criteria of articulated and non-articulated prosthetic mechanisms.

A New General Method for the Determination of Optical Properties of Amorphous Silicon Films

1990 ◽  
Vol 192 ◽  
Author(s):  
G. Amato ◽  
L. Boarino ◽  
F. Fizzotti ◽  
C. Manfredotti
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Amorphous Silicon ◽  
Optical Response ◽  
The Other ◽  
New Method ◽  
Silicon Thin Films ◽  
Physical Insight ◽  
General Method

ABSTRACTWe propose to apply a new method to model the optical response of amorphous silicon thin films. This method presents the advantage of having a good physical insight. On the other hand, although the model has been originally tested on different materials like a-Si, a-Ge and a-GaAs, we show that it is also sensitive to small differences like those that can exist between intrinsic and doped a-Si:H.

The Principles Underlying the Collision Regulations

1962 ◽  
Vol 15 (4) ◽  
pp. 402-414 ◽  
Author(s):  
L. Oudet
Keyword(s):  
Human Factor ◽  
Human Study ◽  
The Other ◽  
New Method ◽  
Technical Advances ◽  
The Subject

A great deal has been written, especially in the last few years, on the subject of collision at sea. The increase, however, in the speed of ships and in the density of traffic so magnifies the complexity of the problem that even closer and more earnest study is still called for. Three fields of inquiry demand our attention: technical advances, procedure, and the human factor. Of these, the widest and most promising might seem to be the first. Its importance is undeniable, and I am by no means the only one to have pointed out that with the new difficulties it raises it supplies also the appropriate solution. Even wider, however, and more complex is the field of human study; this covers both the others, for in this the final objective is to enable men to master what they have won for themselves, and this they cannot do—here we meet the familiar problems of philosophy, ethics and religion—unless they first learn to master themselves.Compared with these two fields, the technical and the human, that of procedure must at first seem quite insignificant. Can one seriously imagine that there is in fact some new method of avoiding collisions, so abstruse that no one has yet been able to discover it? In my small book on the use of radar I wrote: ‘The Regulations envisage two ways of avoiding collision:1. A movement carried out in concert with the other vessel.2. A reduction of speed, if necessary to zero.

Determination of Enemy Character of Corporations

1930 ◽  
Vol 24 (2) ◽  
pp. 310-336 ◽  
Author(s):  
Ralph A. Nohem
Keyword(s):  
The Other ◽  
Separate Entity ◽  
Entity Theory ◽  
Long Period ◽  
Corporate Entity ◽  
Sovereign Authority ◽  
The Subject ◽  
The One ◽  
Independent Person

Much controversy has raged for a long period of time over the precise nature of what Wormser refers to as the “anatomy” of a corporation. Wormser himself defines a corporation as a “group of one or more persons authorized by sovereign authority to act as a unit and a personality in the eye of the law.” The definition indicates, on the one hand, that the act of incorporation creates a new person or entity, on the other that this new entity is in fact composite, made up of one or more pre-existing entities. The question arises, at what times will the court regard the corporate entity, and at what times will it look to the real persons who compose it ? A key to the solution of the problem is offered by Lord Mansfield. “A fiction of law shall never be contradicted so as to defeat the end for which it was invented, but for every other purpose it may be contradicted.” By the separate entity theory is meant that a corporation is to be regarded as an entity separate and apart from its corporators and that it is to be treated like any other independent person. That this is the theory of corporations generally accepted by the courts need hardly be proved. It will only be noted that the ruling English case on the subject is that of Salomon and Co. v. Salomon. In his opinion in that case Lord Halsbury said: “Once the company is legally incorporated it must be treated like any other independent person.”

THE USE OF CUMULATIVE RESISTANCE IN EARTH-RESISTIVITY SURVEYS

1945 ◽  
Vol 23a (4) ◽  
pp. 57-72 ◽  
Author(s):  
R. Ruedy
Keyword(s):  
Apparent Resistivity ◽  
Middle Layer ◽  
The Other ◽  
Electrode Spacing ◽  
Line Graphs ◽  
Earth Resistivity ◽  
The Earth ◽  
Straight Line ◽  
The Individual

When the soil is assumed to consist of two layers—the upper of resistivity ρ1 and the lower of resistivity ρ2—and cumulative resistances are calculated by adding or integrating the earth-resistivity functions for intervals that are a fraction of the thickness of the upper layer, a practically linear relation is obtained between the cumulative resistance and the electrode spacing until the distance between the electrodes is equal to the thickness of the upper material. Should one of the materials be at least twice as conducting as the other, the extent of the deviation from the linear law enables the determination of the depth of the upper stratum and of the ratio between the resistivities of the two layers. When three layers are present and the middle layer is at least twice as thick as the top stratum, the thicknesses may be deduced from the two departures of the cumulative resistances from the linear law. Since these conclusions are based on the theory of the individual apparent resistivity of stratified ground at various electrode spacings, they have the same range of application as the earth-resistivity curves, but the occurrence of straight line graphs facilitates the plotting and the interpretation of results based on a necessarily limited number of measurements.

LA RELATION CHEZ AVICENNE

2006 ◽  
Vol 16 (2) ◽  
pp. 237-286 ◽  
Author(s):  
HATEM ZGHAL
Keyword(s):  
The Other ◽  
The Subject ◽  
To Receive ◽  
Determining Factor

This study consists in a commentary on some passages from Avicenna, which deal with the category of the relative. The commentary points out the promotion of the relative to the role of an exclusive determining factor. An attempt is made here to show how Avicenna tries to detach the relative accident from its subject, in order to transform it into the exclusive determining factor of a pure thingness. The relative determination of this thingness must be able to receive specifications, which may extend as far as the infimae species. These specifications are obtained by the consideration of the other attributes of the subject of the relative attribution, which are henceforth no more than the “modes of advent” of the relation.

scholarly journals Travesty as a cycle-forming technique of B. Akunin's “Fandorin Series”

Litera ◽  
2021 ◽  
pp. 97-104
Author(s):  
Artem Borisovich Borunov
Keyword(s):  
Grammatical Gender ◽  
Russian Language ◽  
The Other ◽  
True Self ◽  
True Nature ◽  
The Subject ◽  
Linguistic Level ◽  
Limited Scope

The subject of this research is a set of cycle-forming techniques used by Boris Akunin in creating “Fandorin Series” dedicated to the detective Erast Fandorin. One of such techniques is travesty, “gender transitioning” that manifests on the imagery and linguistic levels. A range of characters in the novels and stories about Fandorin disguise themselves as the representatives of the other gender; this is common to the serial criminals who have committed multiple offenses. On the linguistic level, travesty manifests in a way that some characters, having a good command of Russian language, deliberately confuse masculine and feminine genders in their speech or writing. At the same time, travesty is always accompanied by the typical detective motif: the criminal character is initially introduced to the text and conceals his true self, so the detective has foster efforts to track him down. The novelty of this study consists in determination of the two basic strategies of travesty used by B. Akunin in “Fandorin Series”, and as well as in following their realization in various novels and stories dedicated to Erast Fandorin. On both imagery and semantic levels, travesty is more characteristic to the “sealed” type of detective, when the suspect is among a limited scope of persons and gradually reveals his true nature. At the same time, the implementation of such strategy in some texts is consistent (the hero constantly changes his appearance / grammatical gender), while in other texts manifests sporadically.

scholarly journals NEW METHOD TO CALCULATE THE ENERGY AND FRACTAL DIMENSION OF THE DAILY ELECTRICAL LOAD

Fractals ◽  
2020 ◽  
Vol 28 (06) ◽  
pp. 2050135
Author(s):  
HECTOR A. TABARES-OSPINA ◽  
FABIOLA ANGULO ◽  
MAURICIO OSORIO
Keyword(s):  
Fractal Dimension ◽  
Numerical Method ◽  
The Other ◽  
New Method ◽  
Electrical Load ◽  
Load Curve ◽  
Box Counting ◽  
Theoretical Approaches ◽  
The Subject

This paper proposes a method to calculate the degree of fluctuation of the daily electrical load-curve using fractal dimension, which is a quantitative estimator of spatial complexity. The conventional methods for forecasting have not studied such a variable, being a new parameter that can be included to characterize the electrical load. The method of fractal dimension also allows us to propose a new numerical method to calculate the integral of a function, using the trapezoid rule, but splitting the curve with fractal segments, to discover other observations, which allows the elevation of new theoretical approaches. The results are compared with the other methods such as the conventional trapezoid rule and the box-counting. It is then a new contribution that expands the universal knowledge on the subject. The case study is the daily electrical load-curve, where the energy demanded corresponds to the area of the [Formula: see text] region bounded by the curve.

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