Hirschman-Herfindahl index determination under incomplete information
This paper utilizes techniques from combinatorics to derive a closed form solution for an estimator of that portion of a Hirschman-Herfindahl index which measures concentration for that segment of the market with unattributed market share.
Kisalaya Basu +2 more
core +1 more source
CEO Overconfidence, Industry Competition, and ESG Performance
ABSTRACT This study examines the interplay among CEO overconfidence, industry competition, and firms' ESG (Environmental, Social, and Governance) performance. With the growing importance of ESG management, firms are investing more in ESG initiatives as a strategic approach to mitigating downside risk. However, overconfident CEOs, characterized by their
Taehyung Kim, Jaeseog Na
wiley +1 more source
Beyond the Bin: The Effect of Waste Reduction on Real Earnings Management
ABSTRACT We investigate the effect of waste management strategies on real earnings management. Using a sample of 6515 firm‐year observations from 22 countries spanning the 2011–2022 period, we show that companies that reduce their waste generation are less likely to engage in real earnings management, supporting the ethical theoretical perspective ...
Faten Lakhal +3 more
wiley +1 more source
The CAP direct payments reform 2023–2027 in Italy: A path to fairer redistribution?
The distribution and concentration of Common Agricultural Policy (CAP) support and its impact on farm income have gained increasing attention in public debate and scientific literature.
Fabio Pierangeli +4 more
doaj +1 more source
Purpose. To demonstrate the current level of concentration on the rail freight market and to find a feasible long-term way for its expansion and progress by exploring and comparing it to another industrial branch well ahead on the road of concentration ...
B. Farkas
doaj +1 more source
The Impact of Geopolitical Risk on Trade Credit
ABSTRACT In light of escalating global geopolitical tensions, understanding how firms respond to external shocks has become a critical issue for policymakers, corporate managers, and investors. This study investigates the impact of geopolitical risk (GPR) on firms' reliance on trade credit (TC)—an essential form of short‐term financing, particularly ...
Wafa'a B. Al‐Yafei, Hamdi Bennasr
wiley +1 more source
Geographic and Institutional Patterns of Transoral Robotic Surgery in Head and Neck Cancer. [PDF]
ABSTRACT Introduction Transoral robotic surgery (TORS) is increasingly used for oropharyngeal squamous cell carcinoma (OPSCC), yet national patterns of TORS availability for Medicare beneficiaries are not well defined. We characterized hospital type, geographic distribution, and market concentration of TORS.
Gilmore D +9 more
europepmc +2 more sources
Development of competition indicators in the Norwegian general practice: Constructing a postal code-specific Herfindahl-Hirschman index applying STATA software [PDF]
The purpose of this text is to describe a procedure that can be used to construct a Herfindahl-Hirschman index of market concentration based on the following two pieces of information: a) An output measure of individual producers located in areas ...
Chen, Xing, Godager, Geir
core
Diversifying Environmental, Social and Governance Portfolios: Evidence From China
ABSTRACT This study extends traditional portfolio optimization methods by incorporating Environmental, Social and Governance (ESG) performance measures into diversification strategies, specifically focusing on data from the Chinese stock market. By integrating ESG scores and their constituent components (E, S and G), the study examines portfolio ...
Danyang Li +3 more
wiley +1 more source
Herfindahl Hirschman Index (HHI) for assessing the competition among education selling countries
A brief ...
openaire +1 more source

