Status: Offline
PhD Jacek S.
Wrocław, Poland
100%
Job Success
Top Rated Plus
Data scientist / R developer / Excel expert
$49.99/hr
Since 2002 I have been employed at the Department of Economic Forecasting and Analysis at Wroclaw University of Economics. Currently at the post of an assistant professor. Although this work gives me a lot of satisfaction, I am looking for opportunities to test the suitability of my knowledge and skills (and maybe acquire new) in a real business. My current work is shared more or less equally between scientific research and teaching. In addition, occasionally I do expert analyses. I also own websites www.szandula.pl (a website for communication with students ) and www.wzory.info (portal featuring equations and tables used in different areas of science – as for now in the early stage).
Both in my research and teaching work I use a number of different programs and programming languages such as:
a) MS Office and Open Office family: Excel, Access, SQL, VBA;
b) statistical and econometric software: Statistica, SAS, SPSS, R, OX, GRETL;
c) computing environments: Matlab & Simulink, Octave;
d) internet oriented: HTML, Webharvest , XPATH , JavaScript , BeanShell;
e) graphics programs: Corel Draw, GIMP.
RESEARCH
The area of my research interests include mainly the theory of forecasting with particular emphasis on analogue methods, and time series analysis. In practical applications I mainly deal with the study of irregular cyclical fluctuations in the micro and macro scale. Earlier, I dealt with the demographic processes .
I am the author of over 20 publications.
In addition to publication in scientific journals I prepared and made available on my website workbooks using VBA macro for calculating analogue forecasts .
TEACHING
I hold both lectures, classes and computer labs. Since two years also in English. Up to now, I've been responsible for following courses: fundamentals of quantitative methods, mathematical statistics and econometrics, forecasting theory and computer simulation , forecasting and simulation , financial forecasting , financial analysis. I am the author of a prototype tool for automated checking students' knowledge of different courses. Macros written in VBA generate for each student individual set of exercises as well as their solutions. Student's solution is automatically checked . This system has been used successfully for 7 years in an increasing number of courses. It currently supports : financial analysis , mathematical statistics and econometrics, financial forecasting , fundamentals of quantitative methods. I plan to launch it on e-learning platforms.
EXPERT ANALYSIS
Occasionally I undertake expert analysis on demand. I have been involved in the preparation of, inter alia:
- for the Wrocław City Office: forecasts of the development of different economic sectors in Wroclaw.
- For the County Office of Złotoryja: statistical analysis of a survey on labor force participation of people with disabilities in the Złotoryja county. My task was firstly to write software using the language VBA and SQL to automatically obtain statistical measures for the desired queries and secondly to interpret some of the results.
- For individuals: statistical studies of various surveys.
Work history
Work history
Need an excel wizard to edit my accounting spreadsheet
Jul 24, 2022
-
Mar 16, 2024
5.00
Private earnings
Data request
Jun 8, 2023
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Jul 5, 2023
No feedback given
Private earnings
Building dynamic pricing model
Jun 15, 2023
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Jun 30, 2023
No feedback given
Private earnings
Analysis of cardiorespiratory data from a piezoelectric sensor and force-sensing resistor
Apr 17, 2023
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Apr 24, 2023
5.00
Private earnings
Analysis of cardiorespiratory data from a piezoelectric sensor and force-sensing resistor
Apr 5, 2023
-
Apr 15, 2023
5.00
"It’s been a pleasure working with Jacek. He’s always prompt with his responses, works efficiently, and I really appreciate his help and patience."
Private earnings
Predictive analytics based on historical sales data
Jan 26, 2022
-
Apr 11, 2023
5.00
Private earnings
HAR project extension
Sep 7, 2017
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Mar 28, 2023
5.00
Private earnings
Data analysis
Oct 10, 2022
-
Jan 26, 2023
5.00
Private earnings
R project using Rmarkdown
Jan 21, 2023
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Jan 23, 2023
5.00
"Jacek is truly excellent. I highly recommend ! This is my second time working with him and will certainly request his service again in the future."
Private earnings
Data Analysis
Oct 26, 2022
-
Nov 22, 2022
4.50
Private earnings
Extracting data from a website
Nov 22, 2024
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Present
Job in progress
Private earnings
Predictive Analytics
Oct 15, 2024
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Present
Job in progress
Private earnings
Statistics
Oct 19, 2023
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Present
Job in progress
Private earnings
Data Analyst for Yacht Cost Management and Budget Forecasting
Jul 25, 2023
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Present
Job in progress
Private earnings
Statistical analysis of a revenue forecast
May 16, 2023
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Present
Job in progress
Private earnings
Financial Modelling In Excel. Expert Needed
Mar 23, 2023
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Present
Job in progress
Private earnings
Panel regression research
Feb 21, 2023
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Present
Job in progress
Private earnings
Complete and neaten a spreadsheet that can neatly print as a PDF
Dec 18, 2022
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Present
Job in progress
Private earnings
Data Analyst: Optimizing Amazon Advertising
Dec 5, 2022
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Present
Job in progress
Private earnings
Research
Sep 14, 2022
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Present
Job in progress
Private earnings
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Skills
Skills
- Analytics
- Pricing
- Visual Basic for Applications
- Quantitative Research
- Probability Theory
- Amazon PPC
- Equations