This map shows the geographic impact of R. Walczak's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by R. Walczak with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites R. Walczak more than expected).
This network shows the impact of papers produced by R. Walczak. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by R. Walczak. The network helps show where R. Walczak may publish in the future.
Co-authorship network of co-authors of R. Walczak
This figure shows the co-authorship network connecting the top 25 collaborators of R. Walczak.
A scholar is included among the top collaborators of R. Walczak based on the total number of
citations received by their joint publications. Widths of edges
represent the number of papers authors have co-authored together.
Node borders
signify the number of papers an author published with R. Walczak. R. Walczak is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Walczak, R., H. Piotrowska, M. Woźna, et al.. (2011). Microfluidic chip system model (Lab-on-chip) in research on quality of mammalian oocytes and embryos.. Medycyna Weterynaryjna. 67(8). 522–526.1 indexed citations
4.
Walczak, R., et al.. (2011). Injection, separation and fluorimetric detection of DNA in glass lab-on-a-chip for capillary gel electrophoresis. Optica Applicata. 41.5 indexed citations
5.
Walczak, R., Jan Dziuban, M. Jackowska, et al.. (2010). Lab-on a-chip for developmental competence assessment of bovine oocytes. Elektronika : konstrukcje, technologie, zastosowania. 51. 30–33.1 indexed citations
6.
Witkowska-Walczak, B., R. Walczak, & Janusz Ostrowski. (2003). Pore size distribution and amount of water available for plants in arable soils of Poland. International Agrophysics. 17(4). 213–217.8 indexed citations
7.
Witkowska-Walczak, B., R. Walczak, & Cezary Sławiński. (2002). Correlation model for water retention prediction with soil structure parameters. Polish Journal of Soil Science. 35(1).3 indexed citations
8.
Witkowska-Walczak, B., et al.. (2002). Changes in the hydrophysical properties of peat soils under anthropogenic evolution. International Agrophysics. 16(3). 219–226.11 indexed citations
9.
Walczak, R., B. Witkowska-Walczak, & Cezary Sławiński. (2002). Comparison of correlation models for the estimation of the water retention characteristics of soil. International Agrophysics. 16(1). 79–82.13 indexed citations
10.
Walczak, R., et al.. (2002). Spatial characteristics of potentially useful retention in Polish arable soils. International Agrophysics. 16(3). 231–238.3 indexed citations
11.
Walczak, R., Janusz Ostrowski, B. Witkowska-Walczak, & Cezary Sławiński. (2002). Spatial characteristic of hydro-physical properties in arable mineral soils in poland as illustrated by field water capacity (FWC). International Agrophysics. 16(2). 151–159.15 indexed citations
12.
Walczak, R., et al.. (2001). Retencja i przewodnictwo wodne gleb murszowych i murszowatych Polski. Acta Agrophysica. 53. 201–209.1 indexed citations
13.
Witkowska-Walczak, B., R. Walczak, & Cezary Sławiński. (2000). Retencja wodna redzin Polski. Acta Agrophysica. 38. 247–258.1 indexed citations
14.
Walczak, R., et al.. (2000). Porownanie zmierzonych i oszacowanych wartosci wspolczynnika przewodnictwa wodnego gleb murszowych. Acta Agrophysica. 34. 181–188.
15.
Sławiński, Cezary, Z. Sokołowska, & R. Walczak. (2000). Effects of secondary transformation of peat-moorsh soils on their physical properties. Acta Agrophysica. 26.1 indexed citations
16.
Sławiński, Cezary, R. Walczak, & B. Witkowska-Walczak. (2000). Przewodnictwo wodne redzin Polski. Acta Agrophysica. 38. 259–266.
17.
Gliński, Jan & R. Walczak. (1998). Role of agrophysics in the concept of sustainable agriculture. International Agrophysics. 12(1). 25–32.4 indexed citations
18.
Walczak, R., B. Witkowska-Walczak, & Piotr Baranowski. (1997). Soil structure parameters in models of crop growth and yield prediction. Physical submodels. International Agrophysics. 11. 111–127.13 indexed citations
19.
Sławiński, Cezary, H. Sobczuk, & R. Walczak. (1996). Submodel of bypass flow in cracking soils. Part 1- Theory. International Agrophysics. 10(3). 189–195.7 indexed citations
20.
Walczak, R. & B. Usowicz. (1994). Variability of moisture, temperature and thermal properties in bare soil and in crop field. International Agrophysics. 8(1). 161–168.19 indexed citations
Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive
bibliographic database. While OpenAlex provides broad and valuable coverage of the global
research landscape, it—like all bibliographic datasets—has inherent limitations. These include
incomplete records, variations in author disambiguation, differences in journal indexing, and
delays in data updates. As a result, some metrics and network relationships displayed in
Rankless may not fully capture the entirety of a scholar's output or impact.