@article{MTMT:36437601,
	title = {A composite metric for evaluating system resilience with non-idealistic performance curves},
	url = {https://m2.mtmt.hu/api/publication/36437601},
	author = {Yeligeti, Madhura and Gils, Hans Christian and Nowak, Wolfgang},
	doi = {10.1371/journal.pone.0335909},
	journal-iso = {PLOS ONE},
	journal = {PLOS ONE},
	volume = {20},
	unique-id = {36437601},
	abstract = {Designing systems and processes resilient to sudden shocks is an essential element of system analysis in many engineering fields. Quantitative resilience assessment employs various metrics to examine and monitor system resilience through experimentation. Existing resilience metrics typically portray the system’s response to a shock-like event as an inverse bell-shaped, triangular, or trapezoidal curve of performance over time. Then, for example, the downward and upward slopes are interpreted as the disruption and restoration phases of the system, respectively. However, these metrics fail or need simplification when a system response does not exhibit such an idealized shape. In this paper, we introduce a composite metric combining various elements of system performance curves, irrespective of shape features. Additionally, the metric integrates a user-defined critical threshold into its mathematical formulation. To verify the metric’s performance, we conducted a survey among researchers in energy system analysis using illustrative system response curves. Comparing the survey-derived ranking and the metric values verifies that the metric aligns with the judgment and expectations of potential users. Finally, we benchmark our metric against its contemporaries, highlighting its versatility with nontypical performance curves. Due to its modular mathematical formulation, this metric can be applied, enhanced, and extended for comparative performance assessment in various fields of analysis, especially in the absence of idealized system response curves.},
	year = {2025},
	eissn = {1932-6203},
	pages = {e0335909},
	orcid-numbers = {Yeligeti, Madhura/0000-0002-9643-465X; Nowak, Wolfgang/0000-0003-2583-8865}
}

@article{MTMT:35075593,
	title = {Reaction to Idiosyncratic Economic Shocks—Economic Resilience of Small- and Medium-Sized Enterprises},
	url = {https://m2.mtmt.hu/api/publication/35075593},
	author = {Tolner, Ferenc and Barta, Balázs and Eigner, György},
	doi = {10.3390/su16135470},
	journal-iso = {SUSTAINABILITY-BASEL},
	journal = {SUSTAINABILITY},
	volume = {16},
	unique-id = {35075593},
	abstract = {The objective of this research is to present a qualitative methodology for the empirical investigation of enterprises’ responses to economic shocks. Annual balance sheets and income statements of nearly 26,000 Hungarian small- and medium-sized enterprises (SMEs) in the production sector have been examined. A data-driven resilience metric is introduced, based on annual sales growth fluctuations in response to idiosyncratic economic disturbances. Accordingly, Logistic Regression and Random Forest classification of company-year observations have been conducted. Non-parametric statistical tests based on pair-matching suggest that while resilience against economic downturns is critical for short-term survival, it does not necessarily translate to any enhanced long-term development or prosperity. This study demonstrates that companies exposed to economic setbacks tend to lag behind compared to control pairs and illuminate the aftermath of resilient shock reactions at the population level. Our findings suggest that enterprises that have experienced an economic shock should be considered vulnerable and monitored regardless of their shock reaction history as part of a sustainable national economic strategy to foster overall competitiveness and productivity and maintain supply chains.},
	year = {2024},
	eissn = {2071-1050},
	orcid-numbers = {Barta, Balázs/0000-0002-4857-1860}
}