Christa Sys

2.0k total citations
97 papers, 1.3k citations indexed

About

Christa Sys is a scholar working on Industrial and Manufacturing Engineering, Environmental Engineering and Strategy and Management. According to data from OpenAlex, Christa Sys has authored 97 papers receiving a total of 1.3k indexed citations (citations by other indexed papers that have themselves been cited), including 57 papers in Industrial and Manufacturing Engineering, 24 papers in Environmental Engineering and 22 papers in Strategy and Management. Recurrent topics in Christa Sys's work include Maritime Ports and Logistics (56 papers), Maritime Transport Emissions and Efficiency (21 papers) and Urban and Freight Transport Logistics (15 papers). Christa Sys is often cited by papers focused on Maritime Ports and Logistics (56 papers), Maritime Transport Emissions and Efficiency (21 papers) and Urban and Freight Transport Logistics (15 papers). Christa Sys collaborates with scholars based in Belgium, Greece and Germany. Christa Sys's co-authors include Thierry Vanelslander, Michele Acciaro, Eddy Van de Voorde, Athena Roumboutsos, Edwin van Hassel, Jasmine Siu Lee Lam, Claudio Ferrari, Geneviève Giuliano, Seraphim Kapros and Hilde Meersman and has published in prestigious journals such as SHILAP Revista de lepidopterología, Sustainability and IEEE Journal of Quantum Electronics.

In The Last Decade

Christa Sys

92 papers receiving 1.3k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Christa Sys Belgium 20 801 483 234 207 195 97 1.3k
Rickard Bergqvist Sweden 19 868 1.1× 449 0.9× 426 1.8× 256 1.2× 238 1.2× 66 1.2k
Michele Acciaro Germany 25 1.2k 1.5× 968 2.0× 187 0.8× 209 1.0× 368 1.9× 46 1.9k
Beatriz Tovar Spain 25 1.0k 1.3× 576 1.2× 217 0.9× 348 1.7× 299 1.5× 57 1.8k
Shiyuan Zheng China 21 611 0.8× 292 0.6× 101 0.4× 336 1.6× 168 0.9× 82 1.1k
Meifeng Luo Hong Kong 24 1.2k 1.4× 519 1.1× 279 1.2× 423 2.0× 201 1.0× 83 1.9k
Harry Geerlings Netherlands 18 440 0.5× 298 0.6× 222 0.9× 240 1.2× 120 0.6× 55 941
Jason Monios United Kingdom 26 1.5k 1.8× 461 1.0× 791 3.4× 536 2.6× 291 1.5× 87 2.0k
Pierre Cariou France 26 1.1k 1.4× 1.0k 2.1× 108 0.5× 222 1.1× 183 0.9× 64 2.0k
Hercules Haralambides Netherlands 25 1.4k 1.7× 439 0.9× 370 1.6× 385 1.9× 288 1.5× 83 1.8k
Athena Roumboutsos Greece 19 339 0.4× 214 0.4× 214 0.9× 200 1.0× 483 2.5× 47 1.2k

Countries citing papers authored by Christa Sys

Since Specialization
Citations

This map shows the geographic impact of Christa Sys'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 Christa Sys with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Christa Sys more than expected).

Fields of papers citing papers by Christa Sys

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Christa Sys. 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 Christa Sys. The network helps show where Christa Sys may publish in the future.

Co-authorship network of co-authors of Christa Sys

This figure shows the co-authorship network connecting the top 25 collaborators of Christa Sys. A scholar is included among the top collaborators of Christa Sys 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 Christa Sys. Christa Sys is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Sys, Christa, et al.. (2025). Evaluating the impact of energy efficiency on time charter rates of containerships. Transportation Research Part D Transport and Environment. 139. 104590–104590.
2.
Zheng, Shiyuan, et al.. (2023). Policies focusing on market-based measures towards shipping decarbonization: Designs, impacts and avenues for future research. Transport Policy. 137. 109–124. 30 indexed citations
3.
Sys, Christa, et al.. (2023). Collection and Processing of Roadside Grass Clippings: A Supply Chain Optimization Case Study for East Flanders. Sustainability. 15(18). 14006–14006. 1 indexed citations
4.
Sys, Christa, et al.. (2022). Developing and demonstrating a maturity model for smart ports. Maritime Policy & Management. 50(4). 447–465. 29 indexed citations
5.
Syriopoulos, Theodore, et al.. (2022). Investment and trading strategies in the maritime sector: an application to the secondhand containership market. WMU Journal of Maritime Affairs. 22(1). 59–89. 1 indexed citations
6.
Sys, Christa, Eddy Van de Voorde, Thierry Vanelslander, & Edwin van Hassel. (2020). Pathways for a sustainable future inland water transport: A case study for the European inland navigation sector. Case Studies on Transport Policy. 8(3). 686–699. 42 indexed citations
7.
Acciaro, Michele & Christa Sys. (2020). Innovation in the maritime sector: aligning strategy with outcomes. Maritime Policy & Management. 47(8). 1045–1063. 40 indexed citations
8.
Vanelslander, Thierry, Christa Sys, Jasmine Siu Lee Lam, et al.. (2019). A serving innovation typology: mapping port-related innovations. Transport Reviews. 39(5). 611–629. 25 indexed citations
9.
Sys, Christa, et al.. (2019). Innovation in Road Freight Transport: Quantifying the Environmental Performance of Operational Cost-Reducing Practices. Sustainability. 11(8). 2212–2212. 16 indexed citations
10.
Sys, Christa, et al.. (2019). Assessing competition in the European rail freight market : is there an oligopoly?. SPIRE - Sciences Po Institutional REpository. 46. 15–36. 1 indexed citations
11.
Sys, Christa, et al.. (2018). Cooperation between airports: A focus on the financial intertwinement of European airport operators. Journal of Air Transport Management. 69. 59–71. 8 indexed citations
12.
Acciaro, Michele, Claudio Ferrari, Jasmine Siu Lee Lam, et al.. (2018). Are the innovation processes in seaport terminal operations successful?. Maritime Policy & Management. 45(6). 787–802. 40 indexed citations
13.
Meersman, Hilde, et al.. (2018). A combined approach to forecast container throughput demand: Scenarios for the Hamburg-Le Havre range of ports. Transportation Research Part A Policy and Practice. 117. 127–141. 47 indexed citations
14.
Duru, Okan, et al.. (2018). Oil Spill Response in Port Areas : Governance and the Polluter-Pays Principle. Rivista Internazionale di Economia dei Trasporti. 45(3). 367–391. 1 indexed citations
15.
Hassel, Edwin van, et al.. (2017). Developing a cost calculation model for inland navigation. Research in Transportation Business & Management. 23. 64–74. 35 indexed citations
16.
Vanelslander, Thierry, et al.. (2016). Innovation among seaport operators : a QCA approach for determining success conditions. Rivista Internazionale di Economia dei Trasporti. 43(3). 291–314. 11 indexed citations
17.
Sys, Christa, et al.. (2012). Analysis of a Cost-Benefit Study: Lessons to be Learned for Large Investment Projects in Ports Areas. 1 indexed citations
18.
Sys, Christa. (2006). An economic analysis of the increase in container vessel scale. Ghent University Academic Bibliography (Ghent University).
19.
Sys, Christa. (2005). The link between optimal ship size and optimal operations. Ghent University Academic Bibliography (Ghent University). 2 indexed citations
20.
Sys, Christa. (1960). Principles of soil classification in the Belgian Congo.. 4. 112–118. 2 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.

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