Wyniki wyszukiwania dla: statistics

• Sampling Strategies: Statistics of Sampling

  Publikacja

  • M. Bodnar
  • P. Konieczka
  • J. Namieśnik

  - Rok 2015

  Each step of the analytical procedure has a significant influence on the final result of the analysis. In the majority of cases the analytical procedure encompasses sampling because the analysis of the entire object (material) is usually not possible. Thus it is necessary to include the uncertainty related to sampling procedure in the uncertainty budget calculations. In the paper: the most important properties of the analysed...

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• Chemometrics and Statistics | Multicriteria Decision Making

  Publikacja

  • M. Bystrzanowska
  • M. Tobiszewski

  - Rok 2019

  This contribution describes the application of Multicriteria Decision Making tools in analytical chemistry. The general scheme of MCDM is presented to show its general steps. The most frequently applied in analytical sciences MCDM techniques – AHP, ELECTRE, PROMETHEE and TOPSIS – are briefly described and their advantages and disadvantages are discussed. The applications in analytical chemistry are selection of an appropriate...

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• OECD Guidelines for Micro Statistics on Household Wealth

  Publikacja

  - Rok 2013

       This report reflects the contributions of members of the OECD Expert Group on Micro Statistics on Household Income, Consumption and Wealth. Members of the Expert Group included representatives from National Statistical Offices – Bob McColl (Chair, Australia); Alison Hale (Canada); Andre Bustamante and David Niculcar (Chile); Henrik Sejerbo Soerensen (Denmark); Yafit Alfandari (Israel); Shinji Yoshioka (Japan); Sinho Kim...

• Higher-Order Statistics for Fluctuation-Enhanced Gas-Sensing.

  Publikacja

  • J. Smulko
  • L. B. Kish

  - Rok 2004

  Przedstawiono wyniki badań eksperymentalnych wykrywania wybranych mieszanin gazów za pomocą analizy fluktuacji rezystancji obserwowanych w sensorach gazu. Do analizy obserwowanych fluktuacji wykorzystano gęstość widmową mocy oraz funkcję bispektrum.

• Application of higher order statistics in the analysis of electrochemical processes

  Publikacja

  • A. Zieliński

  - Rok 2005

  Zjawiska nieliniowe są często spotykane w elektrochemicznych pomiarach korozyjnych. Z drugiej strony linearyzacja zagadnień elektrochemicznych jest uznaną i powszechną praktyką. W niniejszej pracy przedstawiono możliwość poszerzenia interpretacji badanych procesów elektrodowych o techniki oparte na analizie widmowej rzędu wyższego od 2. Autorzy skupili się na analizie szumu elektrochemicznego generowanego podczas polaryzacji katodowej,...

• Ordinal pattern statistics for the assessment of heart rate variability

  Publikacja

  • G. Graff
  • B. Graff
  • A. Kaczkowska
  • D. Makowiec
  • J. Amigó
  • J. Piskorski
  • P. Guzik

  - The European Physical Journal-Special Topics - Rok 2013

  The recognition of all main features of a healthy heart rhythm (the so-called sinus rhythm) is still one of the biggest challenges in contemporary cardiology. Recently the interesting physiological phenomenon of heart rate asymmetry has been observed. This phenomenon is related to unbalanced contributions of heart rate decelerations and accelerations to heart rate variability. In this paper we apply methods based on the concept...

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• Statistics with R A Handbook for Statistical Analysis with R and R-Studio

  Publikacja

  • K. Flisikowski

  - Rok 2022

  If you are to perform any kind of data (statistical) analysis and use tools in the data science ecosystem, you may have seen a variety of tutorials, handbooks online (I’m not mentioning traditional bibles of statistics). Unfortunately most of them is written intentionally for specific purposes and/or target group of people and does not include many aspects, data types, difficult aspects, usually hiding them trying to solve theoretical...

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• Fish target strength estimation using multiple echo statistics

  Publikacja

  • M. Moszyński

  - ACOUSTICAL PHYSICS - Rok 2002

  W pracy przedstawiono sposób określania statystycznych właściwości charakterystyki wiązki systemu hydroakustycznego z uwzględnieniem możliwości pojawienia się echo wielokrotnych od jednej ryby. Przedstawiono modele obejmujące dwa teoretyczne przypadki związane z wzajemnym ruchem statku i pojedynczej ryby i pokazano, że posiadają one zbliżone właściwości statystyczne. Rozważania teoretyczne potwierdzone są analizą przykładowych...

• Effect of Polymerization Statistics on the Electronic Properties of Copolymers for Organic Photovoltaics

  Publikacja

  • G. Boschetto
  • H. Xue
  • J. Dziedzic
  • M. Krompiec
  • C. Skylaris

  - Journal of Physical Chemistry C - Rok 2017

  Statistical block copolymers, composed of donor (D) and acceptor (A) blocks, are a novel type of material for organic photovoltaics (OPVs) devices. In particular a new series of polymers based on PBTZT-stat-BDTT-8, recently developed by Merck, offers high solubility in different solvents, and a high power conversion efficiency (PCE) in different device architectures. Although it is known that the electronic properties of these...

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• STATISTICS

  Czasopisma

  ISSN: 0233-1888 , eISSN: 1029-4910

• Teaching High Performance Computing Using BeesyCluster and Relevant Usage Statistics

  Publikacja

  • P. Czarnul

  - Rok 2014

  The paper presents motivations and experiences from using the BeesyCluster middleware for teaching high performance computing at the Faculty of Electronics, Telecommunications and Informatics, Gdansk University of Technology. Features of BeesyCluster well suited for conducting courses are discussed including: easy-to-use WWW interface for application development and running hiding queuing systems, publishing applications as services...

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• Generalised heart rate statistics reveal neurally mediated homeostasis transients

  Publikacja

  • D. Makowiec
  • B. Graff
  • W. Miklaszewski
  • D. Wejer
  • A. Kaczkowska
  • S. Budrejko
  • Z. R. Struzik

  - EPL-EUROPHYS LETT - Rok 2015

  Distributions of accelerations and decelerations, obtained from increments of heart rate recorded during a head-up tilt table (HUTT) test provide short-term characterization of the complex cardiovascular response to a rapid controlled dysregulation of homeostasis. A generalised statistic is proposed for evaluating the neural reflexes responsible for restoring the homeostatic dynamics. An evaluation of the effects on heart rate...

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• Searching for Solvents with an Increased Carbon Dioxide Solubility Using Multivariate Statistics

  Publikacja

  • M. Bystrzanowska
  • M. Tobiszewski
  • F. Pena-Pereira
  • V. Simeonov

  - MOLECULES - Rok 2020

  Ionic liquids (ILs) are used in various fields of chemistry. One of them is CO2 capture, a process that is quite well described. The solubility of CO2 in ILs can be used as a model to investigate gas absorption processes. The aim is to find the relationships between the solubility of CO2 and other variables—physicochemical properties and parameters related to greenness. In this study, 12 variables are used to describe a dataset...

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• thestats: An Open-Data R Package for Exploring Turkish Higher Education Statistics

  Publikacja

  • M. Cavus
  • O. Aydin

  - Yuksekogretim Dergisi - Rok 2023

  There are open datasets available for official statistics, finance, education, and a variety of other domains. The open datasets are published by third-party vendors as well as official authorities. For example, The Turkish Higher Education Council maintains a web portal dedicated to higher education in Türkiye. Detailed datasets about universities, faculties, and departments can be obtained from the portal. Using the data provided...

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• Non-parametric application of Tsallis statistics to systems consisting of M hydrogen molecules

  Publikacja

  • E. Drzazga
  • R. Szczęśniak
  • I. Domagalska
  • A. Durajski
  • M. Kostrzewa

  - Physica A: Statistical Mechanics and its Applications - Rok 2019

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• On the possibility of estimating fish length distribution from its target strength statistics.

  Publikacja

  • M. Moszyński
  • A. Stepnowski

  - Rok 2004

  Artykuł przedstawia koncepcję odtwarzania rozkładu długości ryb na podstawie danych z przeszukiwań akustycznych. Wykorzystując metody odwrotne w statystycznym przetwarzaniu rozkładu siły celu ryb pokazano, że przy pewnych założeniach co do rozkładu położenia ryb w wiązce, możliwa jest estymacja szukanego rozkładu długości ryb.

• Application of multivariate statistics in assessment of green analytical chemistry parameters of analytical methodologies

  Publikacja

  • M. Tobiszewski
  • S. Tsakovski
  • V. Simeonov
  • J. Namieśnik

  - GREEN CHEMISTRY - Rok 2013

  The study offers a multivariate statistical analysis of a dataset, including the major metrological, “greenness” and methodological parameters of 43 analytical methodologies applied for aldrin determination (a frequently analyzed organic compound) in water samples. The variables (parameters) chosen were as follows: metrological (LOD, recovery, RSD), describing the “greenness” (amount of the solvent used, amount of waste generated)...

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• KOLMOGOROV EQUATION SOLUTION: MULTIPLE SCATTERING EXPANSION AND PHOTON STATISTICS EVOLUTION MODELING

  Publikacja

  • M. Guirao Galcera
  • S. Leble

  - TASK Quarterly - Rok 2014

  We consider a formulation of the Cauchy problem for the Kolmogorov equation which corresponds to a localized source of particles to be scattered by a medium with a given scattering amplitude density. The multiple scattering amplitudes are introduced and the corresponding series solution of the equation is constructed. We investigate the integral representation for the first series terms, its estimations and values of the photon...

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• Complementary use of GCxGC–TOF–MS and statistics for differentiation of variety in biosolid samples

  Publikacja

  • H. Byliński
  • T. Dymerski
  • J. Gębicki
  • J. Namieśnik

  - MONATSHEFTE FUR CHEMIE - Rok 2018

  Formation of biosolid cakes, which are one of the main wastes generated in wastewater treatment plants, is connected with emission of many hazardous chemical compounds, including odoriferous ones. To optimize particular processes of biosolid cake processing, it is necessary to assess chemical composition of the gas mixtures containing the compounds released from the cakes. The paper proposes application of two-dimensional gas chromatography...

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• Statistics of AFM current-voltage curves

  Dane Badawcze

  open access

  • A. Zieliński
  • J. Ryl

  - seria: Scanning Probe Microscopies data

  Mapping surface electrical conductivity offers enormous cognitive possibilities regarding the structure and properties of modern materials. The technique invented for this purpose (Conductive AFM) by Murrel's team and colleagues allows independent monitoring of the local conductivity of materials in correlation with the topographic profile. The mentioned...

• COMPUTATIONAL STATISTICS

  Czasopisma

  ISSN: 0943-4062 , eISSN: 1613-9658

• Teaching Statistics

  Czasopisma

  ISSN: 0141-982X , eISSN: 1467-9639

• Econometrics and Statistics

  Czasopisma

  ISSN: 2468-0389 , eISSN: 2452-3062

• Spatial Statistics

  Czasopisma

  ISSN: 2211-6753

• Statistics and Applications

  Czasopisma

  ISSN: 2454-7395

• Statistics Surveys

  Czasopisma

  ISSN: 1935-7516

• Regional Statistics

  Czasopisma

  ISSN: 2063-9538 , eISSN: 2064-8243

• Statistics in Biosciences

  Czasopisma

  ISSN: 1867-1764 , eISSN: 1867-1772

• ANNALS OF STATISTICS

  Czasopisma

  ISSN: 0090-5364

• PHARMACEUTICAL STATISTICS

  Czasopisma

  ISSN: 1539-1604 , eISSN: 1539-1612

• Mathematics and Statistics

  Czasopisma

  ISSN: 2332-2071 , eISSN: 2332-2144

• STATISTICS AND COMPUTING

  Czasopisma

  ISSN: 0960-3174 , eISSN: 1573-1375

• STATISTICS IN MEDICINE

  Czasopisma

  ISSN: 0277-6715 , eISSN: 1097-0258

• Ordinal Pattern Statistics for RR Intervals during Head-Up Tilt Test in Patients with the History of Vasovagal Syncope

  Publikacja

  • B. Graff
  • G. Graff
  • A. Kaczkowska
  • D. Makowiec
  • S. Budrejko
  • D. Kozłowski
  • K. Narkiewicz

  - Rok 2014

  We apply ordinal pattern analysis to quantify differences in distribution of patterns of length 3 and 4 in basal state and during head-up tilt test (HUTT) in patients with the history of syncope and positive (HUTT(+)) or negative (HUTT(-)) responses to the test. We identify the patterns related to prevalence of sympathetic or parasympathetic cardiac modulation as well as describe the relations between the response to the test and...

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• Music Information Retrieval – Soft Computing versus Statistics . Wyszukiwanie informacji muzycznej - algorytmy uczące versus metody statystyczne

  Publikacja

  • B. Kostek

  - Rok 2015

  Music Information Retrieval (MIR) is an interdisciplinary research area that covers automated extraction of information from audio signals, music databases and services enabling the indexed information searching. In the early stages the primary focus of MIR was on music information through Query-by-Humming (QBH) applications, i.e. on identifying a piece of music by singing (singing/whistling), while more advanced implementations...

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• Journal of Statistics Education

  Czasopisma

  ISSN: 1069-1898

• Journal of Statistics and Mathematics

  Czasopisma

  ISSN: 0976-8807

• Journal of Probability and Statistics

  Czasopisma

  ISSN: 1687-952X , eISSN: 1687-9538

• Chilean Journal of Statistics

  Czasopisma

  ISSN: 0718-7912 , eISSN: 0718-7920

• Communications in Mathematics and Statistics

  Czasopisma

  ISSN: 2194-6701 , eISSN: 2194-671X

• Advances and Applications in Statistics

  Czasopisma

  ISSN: 0972-3617

• ENVIRONMENTAL AND ECOLOGICAL STATISTICS

  Czasopisma

  ISSN: 1352-8505 , eISSN: 1573-3009

• Austrian Journal of Statistics

  Czasopisma

  ISSN: 1026-597X

• Electronic Journal of Statistics

  Czasopisma

  ISSN: 1935-7524

• Statistics in Biopharmaceutical Research

  Czasopisma

  ISSN: 1946-6315

• Journal of Algebraic Statistics

  Czasopisma

  ISSN: 1309-3452

• Mathematical Methods of Statistics

  Czasopisma

  ISSN: 1066-5307 , eISSN: 1934-8045

• Statistics & Risk Modeling

  Czasopisma

  ISSN: 2193-1402 , eISSN: 2196-7040

• Statistics and Public Policy

  Czasopisma

  ISSN: 2330-443X

• Cogent Mathematics & Statistics

  Czasopisma

  eISSN: 2574-2558