Results for Initial Trials Comparing Conformal with Non-Conformal Hypocenter Scanning Algorithms

This present paper sets out to perform a limited comparison between that method of P2P (point to point) scanning for Hypocenters, which uses the structure, imparted by a conformal mapping, to accelerate its ray tracing activity, and a method of scanning which incorporates the Earth spheroidal geometry directly within its ray tracing technique and which does not currently use a conformal mapping technique. The “conformal” method uses a mean-radius spherical Earth or can take a mean radius over the region covered by Epicenter and the sensor-field.In this comparison an attempt is made to compare and contrast a set of some possible functions (“indicator functions”) which serve to define the position of a Hypocenter within their response curve which is formed during the scan. Depending on the function, the expected indication may be either a minimum or a maximum, occurring within the range of the response.

Download Full-text

Simplicial Homology Global Optimisation in the Problem of Point-to-Point Ionospheric Ray Tracing

2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science ◽

10.23919/ursigass49373.2020.9232337 ◽

2020 ◽

Author(s):

Nikita A. Tereshin ◽

Artem M. Padokhin ◽

Elena S. Andreeva ◽

Ekaterina A. Kozlovtseva

Keyword(s):

Ray Tracing ◽

Global Optimisation ◽

Simplicial Homology ◽

Point To Point

Download Full-text

Children’s Astronomy. Development of the Shape of the Earth Concept in Polish Children between 5 and 10 Years of Age

Education Sciences ◽

10.3390/educsci11020075 ◽

2021 ◽

Vol 11 (2) ◽

pp. 75

Author(s):

Jan Amos Jelinek

Keyword(s):

Mental Model ◽

Cultural Influences ◽

Test Results ◽

The Earth ◽

Spherical Earth ◽

The Individual ◽

High Level ◽

Cognitive Problems ◽

Teaching Situations ◽

Model Approach

The Earth’s shape concept develops as consecutive cognitive problems (e.g., the location of people and trees on the spherical Earth) are gradually resolved. Establishing the order of problem solving may be important for the organisation of teaching situations. This study attempted to determine the sequence of problems to be resolved based on tasks included in the EARTH2 test. The study covered a group of 444 children between 5 and 10 years of age. It captured the order in which children solve cognitive problems on the way to constructing a science-like concept. The test results were compared with previous studies. The importance of cultural influences connected to significant differences (24%) in test results was emphasised. Attention was drawn to the problem of the consistency of the mental model approach highlighted in the literature. The analysis of the individual sets of answers provided a high level of consistency of indications referring to the same model (36%), emphasising the importance of the concept of mental models.

Download Full-text

Accuracy-improved through-silicon-via model using conformal mapping technique

2011 IEEE 20th Conference on Electrical Performance of Electronic Packaging and Systems ◽

10.1109/epeps.2011.6100223 ◽

2011 ◽

Cited By ~ 5

Author(s):

Tai-Yu Cheng ◽

Chuen-De Wang ◽

Yih-Peng Chiou ◽

Tzong-Lin Wu

Keyword(s):

Conformal Mapping ◽

Mapping Technique ◽

Through Silicon Via

Download Full-text

Impulse Response of Metal-Semiconductor-Metal Photodetectors Using a Conformal Mapping Technique and Extracted Circuit Parameters

Japanese Journal of Applied Physics ◽

10.1143/jjap.36.652 ◽

1997 ◽

Vol 36 (Part 1, No. 2) ◽

pp. 652-656 ◽

Cited By ~ 3

Author(s):

Walter Wohlmuth ◽

Mohamed Arafa ◽

Patrick Fay ◽

Jong-Wook Seo ◽

Ilesanmi Adesida

Keyword(s):

Conformal Mapping ◽

Impulse Response ◽

Mapping Technique ◽

Metal Semiconductor Metal

Download Full-text

Buried cable parameter extraction using a full-space unbounded conformal mapping technique

2009 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting ◽

10.1109/antemursi.2009.4805046 ◽

2009 ◽

Cited By ~ 2

Author(s):

Siamak Bonyadi-ram ◽

Behzad Kordi ◽

Greg E. Bridges

Keyword(s):

Conformal Mapping ◽

Parameter Extraction ◽

Mapping Technique

Download Full-text

Analysis of seepage from a triangular furrow considering soil capillarity using inverse hodograph and conformal mapping technique

ISH Journal of Hydraulic Engineering ◽

10.1080/09715010.2016.1213144 ◽

2016 ◽

Vol 23 (1) ◽

pp. 1-12 ◽

Cited By ~ 4

Author(s):

Kshyana Prava Samal ◽

G. C. Mishra

Keyword(s):

Conformal Mapping ◽

Mapping Technique

Download Full-text

Zaccaria Lilio and the shape of the earth: A brief response to Allegro’s “Flat earth science”

History of Science ◽

10.1177/0073275317714933 ◽

2017 ◽

Vol 55 (4) ◽

pp. 490-498 ◽

Cited By ~ 1

Author(s):

C. Philipp E. Nothaft

Keyword(s):

Southern Hemisphere ◽

Earth Science ◽

Substantial Part ◽

The Earth ◽

Spherical Earth ◽

Late Fifteenth ◽

The Universe

This is a response to James J. Allegro’s article “The Bottom of the Universe: Flat Earth Science in the Age of Encounter,” published in Volume 55, Number 1, of this journal. Against the solid consensus of modern scholars, Allegro contends that the decades around 1500 saw a resurgence of popular and learned doubts about the existence of a southern hemisphere and the concept of a spherical earth more generally. It can be shown that a substantial part of Allegro’s argument rests on an erroneous reading of his main textual witness, Zaccaria Lilio’s Contra Antipodes (1496), and on a failure adequately to place this source in the context of the cosmographical debate of the late fifteenth and early sixteenth centuries. Once this context is taken into account, the notion that Lilio was a flat-earther falls flat.

Download Full-text