📈 economics

Unveiling the Effect of Low-Carbon City Pilot Policy on Urban Ecological Resilience: Integration of DID and DML Models

This study utilizes an integrated difference-in-differences and dual machine learning model on panel data from 220 Chinese cities (2005–2022) to demonstrate that the low-carbon city pilot policy significantly enhances urban ecological resilience through industrial structure upgrading and green technology innovation, while revealing distinct spatiotemporal variations and heterogeneity across different city types.

Tiantian Gu, Hongtu Yan, Peipei Du, Zhi Kang, Dezhi Li2026-09-08
📈 economics

Uniform or Concentrated? Infrastructure-Induced Metric Deformation and Welfare in a One-Dimensional Spatial Economy

This paper develops a continuous-space New Economic Geography model on a unit circle to demonstrate that the welfare impact of infrastructure investment depends on a regime-dependent threshold, where uniform investment is optimal below a certain trade-cost level, but concentrated, low-frequency investment outperforms it in an agglomeration-resonant band when local trade costs are sufficiently high.

GU LUOLUO2026-09-08
📈 economics

Detector-Relative Zombies: Non-Bank Survival Channels at Transocean and Across Offshore Drilling

This paper demonstrates that Transocean's classification as a "zombie" firm is contingent on the specific diagnostic metric used, revealing that non-bank financing channels and industry-specific structures allow offshore drillers to survive despite failing interest-coverage tests, thereby highlighting the sensitivity of aggregate zombie counts to accounting definitions and the need for targeted policy interventions.

lixued kang2026-09-08
📈 economics

Zombie Capacity That Won't Clear: Behavioral Anchoring and Rigid Supply in Offshore Drilling, 2002–2025

This paper argues that the 2002–2025 distress in the offshore drilling industry was primarily triggered by supply and commodity-price shocks that created structural overcapacity, with credit issues acting only as a lagged amplifier for high-leverage firms, while the persistence of this "zombie" capacity is driven by behavioral anchoring to past price peaks and rigid supply constraints.

lixued kang2026-09-08