Demetris T. Christopoulos - welcome to my webpage

Demetris T. Christopoulos

Physicist (1985-1991)

MPhil in Economics (2008-2011)

PhD studies (2011-2017)

Department of Economics
National and Kapodistrian University of Athens

dchristop[at] econ [dot] uoa [dot] gr

Google Scholar Profile

Microsoft Academic Profile

Academia

SSRN

Publications in Medium

Non Parametric Analysis of Coronavirus and Other Disease Data Sets

Publications in refereed journals

Demetris T. Christopoulos, Extraction of the global absolute temperature for Northern Hemisphere using a set of 6190
meteorological stations from 1800 to 2013, Journal of Atmospheric and Solar-Terrestrial Physics, Volume 128, June 2015, Pages 70-83, ISSN 1364-6826, doi:10.1016/j.jastp.2015.03.009.

The above is a 10/10 Elsevier Rating publication according to My Research Dashboard:

Demetris T. Christopoulos, On the Efficient Identification of an Inflection Point,
International Journal of Mathematics and Scientific Computing , Volume 6 (1), June 2016, Pages 13-20, ISSN: 2231-5330. Retrieved from https://demovtu.veltech.edu.in/wp-content/uploads/2016/04/Paper-04-2016.pdf

Publications in arXiv.org

Identifier	Primary Category	Title
1401.6789	physics.gen-ph	Inflection point analysis for Greek seismicity 1900-2006
1312.2395	math.FA	On the effective radius of convergence for a given truncated power series expansion
1311.7525	math.NA	Polynomial regression using trapezoidal rule for computing Legendre coefficients
1311.1835	math.ST	Linear Regression without computing pseudo-inverse matrix
1207.2611	stat.CO	A simple and numerical stable algorithm for solving the cone projection problem based on a Gram-Schmidt process
1206.5478	math.NA	Developing methods for identifying the inflection point of a convex/concave curve

Featured Publications in ResearchGate and stats until 10/10/2016

Title	Date dd/mm/yy	Reads 10/04/2016	Reads 10/10/2016
Letter to the Nobel Committee on LIGO claims for gravitational waves detections GW150914 and GW151226	30/06/16		804
On the Efficient Identification of an Inflection Point	29/06/16		221
Big data analysis of Livingston and Hanford logfiles for LIGO project 2010-2016	23/04/16	1770	6109
A detailed critical review of reported event GW150914 that LIGO/VIRGO collaboration announced as gravitational waves and black holes observation	28/03/16	2805	2988
Introducing Unit Invariant Knee (UIK) as an objective choice for elbow point in multivariate data analysis techniques	01/03/16	21	36
A first critical review of event GW150914 observed by LIGO detectors Livingston and Hanford	16/02/16	4414	4468
FORTRAN code for solving Lane-Emden differential equation for a differentially rotating polytropic star	17/01/16	21	28
Μια προσπάθεια ανίχνευσης χαοτικής συμπεριφοράς σε κβαντικές θεωρίες πεδίου (An attempt for detection of chaotic behavior in quantum field theories)	30/12/15	34	43
Extraction of the global absolute temperature for Northern Hemisphere using a set of 6190 meteorological stations from 1800 to 2013 (accepted manuscript)	24/03/15	99	140
The VAN predicted Earthquake that never happened	01/12/15	26	29
Reliable computations of knee point for a curve and introduction of a unit invariant estimation	01/12/14	605	887
Urgent hypothesis on plane MH370 disappearance and related problems	05/09/14	581	662
R package 'inflection' documentation	30/08/14	120	218
R package 'RootsExtremaInflections' documentation	28/08/14	25	30
A new cosmological paradigm: universal locality	07/08/14	125	175
Why relativity theories cannot serve as a cosmological paradigm	31/07/14	71	85
A POSSIBLE INSIGHT INTO THE NATURE OF SPIRIT AND DARK ENERGY	28/07/14	99	119
A simple definition of Time	16/06/14	499	10035
The Line, The Cave from The Republic of Plato and the The World of Universals from Bertrand Russell	04/06/14	47	53
Developing methods for identifying the inflection point of a convex/concave curve	03/06/14	260	347
Urgent hypothesis on plane MH370 disappearance	01/06/14	133	141
Find inflection point using R	31/05/14	629	781
Inflection point analysis for Greek seismicity 1900-2006	31/05/14	69	76
An attempt to analyse the puzzle of global Earth temperature evolution	27/05/14	144	166
Urgent hypothesis on plane MH370 disappearance v2	23/05/14	593	639
Extraction of the global absolute temperature for Northern hemisphere from a set of 6190 meteorological stations	22/05/14	185	200
Σημειώσεις Εργαστηρίου Γραμμικών Μαθηματικών	21/05/14	276	311
Linear Regression without computing pseudo-inverse matrix	20/05/14	64	70
Polynomial regression using trapezoidal rule for computing Legendre coefficients	20/05/14	41	43
Roots, extrema and inflection points by using a proper Taylor regression procedure	19/05/14	205	235
A simple and numerical stable algorithm for solving the cone projection problem based on a Gram-Schmidt process	17/05/14	33	33
On the effective radius of convergence for a given truncated power series expansion	16/05/14	31	33
Total Reads	2014-2016	14025	30205

Software

Language	Classification	Name
R project	Inflection point analysis	inflection
R project	Numerical Mathematics	RootsExtremaInflections
FORTRAN	Computational Astrophysics	FORTRAN code for solving Lane-Emden differential equation for a differentially rotating polytropic star

1Εργαστήριο του μαθήματος Γραμμικών Μαθηματικών του αν. καθ. Στέλιου Κώτσιου, εαρινό εξάμηνο 2010-2011.

2Co-author: Dr Galina K. Ustinova, Vernadsky Institute of Geochemistry and Analytical Chemistry, RAS, Moscow

3Co-author: Dr Galina K. Ustinova, submitted at the 3^rd Greek Conference on Philosophy of Science

Most read author from Greece and NKUA first ranking

The publication A simple definition of Time has given to National and Kapodistrian University of Athens
(NKUA) more reads than everyone of the Shanghai Ranking Top 10 universities:

ResearchGate weekly reads for the most read publication
									RG Reads	Shanghai
Academic Ranking of World Universities 2016	19-25/9/16	26/9-2/10/16	3-9/10/16	17-23/10/16	24-30/10/16	31/10-6/11/16	7-13/11/16	19/9-6/11/16	Ranking	Ranking
National and Kapodistrian University of Athens	3000	3318	3000	2431	2014	2000	2000	17763	1	301-400
University of California, Berkeley	2000	2000	2000	2000	617	2000	2000	12617	2	3
Harvard University	2000	551	635	499	2000	832	475	6992	3	1
Massachusetts Institute of Technology (MIT)	618	525	849	706	333	806	973	4810	4	5
Stanford University	349	605	804	546	2000	391	830	5525	5	2
University of Cambridge	504	510	380	882	2000	355	602	5233	6	4
University of Oxford	631	437	646	571	401	382	400	3468	7	7
Columbia University	291	226	542	351	295	557	355	2617	8	9
University of Chicago	207	221	229	1000	206	176	193	2232	9	10
Princeton University	177	193	192	172	200	152	212	1298	10	6
California Institute of Technology	154	196	238	219	107	108	103	1125	11	8

Analytics for publication reads, ranking of National and Kapodistrian University of Athens
because of them plus software downloads can also be found here.

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