Results 191 to 200 of about 1,227,664 (287)

Directional analysis of upper eyelid wrinkles and a quantitative index for periorbital ageing

open access: yesInternational Journal of Cosmetic Science, EarlyView.
Eyelid wrinkles not only increase in number and depth but also shift in orientation with ageing. After 40, the dominance of a particular orientation in the upper eyelid image is associated with broader periorbital wrinkle severity, providing a novel quantitative index for fine‐grained ageing assessment. Abstract Objective Periorbital ageing, manifested
Ken Suematsu   +2 more
wiley   +1 more source

A Quantile Model of Firm Investment

open access: yesInternational Economic Review, EarlyView.
ABSTRACT Are firms risk averse? We propose a dynamic model of firm investment under uncertainty that captures firms' risk attitudes through quantile preferences. The firm maximizes its present value, defined as current profits and investment plus the discounted value of the τ$\tau$‐quantile of its value next period.
Heitor Almeida   +3 more
wiley   +1 more source

Sharing the service or not? The strategies of optimal prices and logistics service in an online marketplace

open access: yesInternational Transactions in Operational Research, EarlyView.
Abstract In modern supply chain ecosystems, brand owners increasingly adopt authorized reseller partnerships while concurrently operating their own flagship stores alongside resellers' exclusive stores. This study investigates the strategic implications of logistics service sharing between vertically related e‐commerce entities, particularly focusing ...
Xiaoya Han, Shun Wang, Xin Liu
wiley   +1 more source

Feedback and Contagion through Distressed Competition

open access: yesThe Journal of Finance, EarlyView.
ABSTRACT Firms tend to compete more aggressively when facing financial distress. This intensified competition reduces profit margins, pushing them further into distress and adversely affecting their industry peers. To study such feedback and contagion effects, we incorporate strategic competition in a dynamic model with long‐term defaultable debt ...
HUI CHEN   +3 more
wiley   +1 more source

A Unified Approach to Estimating Production Functions: Proxy Variables and Dynamic Panel Data

open access: yesThe Journal of Industrial Economics, EarlyView.
ABSTRACT We propose a new approach to production function estimation that integrates the strengths of the proxy‐variable (PV) and dynamic panel data (DPD) methods. Our framework augments the set of instruments for the level equation in Blundell and Bond [8] with a Berkson‐type instrument motivated by economic theory, following Olley and Pakes [28 ...
Jose Miguel Abito   +1 more
wiley   +1 more source

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