Results 61 to 70 of about 7,683 (263)

Agentic AI and Circular Procurement Performance: An Empirical Study

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT Organizations that practice circular procurement in this rapidly changing world face many uncertainties. However, emerging digital technologies, such as agentic AI, can help manage resources and improve responsiveness to better serve both internal and external customers.
Surajit Bag   +3 more
wiley   +1 more source

Data‐Driven Analysis of Green Logistics Strategies for the Logistics and Transportation Companies: A Bipolar Fuzzy Methodology

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT Global imperatives, such as climate change, environmental concerns, and carbon emissions, make green transformation an inevitability in the logistics sector. Green logistics strategy formulation is an economic choice problem, but it also turns out to be a multicriteria decision‐making (MCDM) process that encompasses the triple bottom line (TBL)
Ömer Faruk Görçün   +2 more
wiley   +1 more source

Research on the dependence of shanghai real estate shares index and financial index based on Copula-GARCH models(基于Copula-GARCH模型的上证地产股与金融股的相关性研究)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2013
利用Copula-GARCH模型,研究上证地产股指数和金融股指数收益率的相关性.利用边缘函数推断法(IFM)建立2个股指对数收益率的时间序列的GARCH(1,1)-t模型.对边缘分布概率积分变化后的2个服从均匀分布的序列,分别建立常相关的二元Copula模型,包括正态Copula函数、Clayton Copula函数、Gumbel Copula函数、t-Copula函数、SJC-Copula函数和时变相关的二元Copula模型 ...
LIUGui-mei(刘桂梅), ZHAOLi(赵丽)
doaj   +1 more source

From Demand Stability to Environmental Responsibility: How Ordered Backlogs Shape Firm Behaviour

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT Ordered backlogs are the confirmed and yet to be delivered customer orders, which may have multiple advantages to firms. We investigate how ordered backlogs influence firms' future environmental misconduct. Drawing on organisational slack theory, we argue that ordered backlogs as a form of demand‐side slack can reduce environmental misconduct.
Ashutosh Singh   +4 more
wiley   +1 more source

Transformations of copulas.

open access: yesKybernetika, 2005
Summary: Transformations of copulas by means of increasing bijections on the unit interval and attractors of copulas are discussed. The invariance of copulas under such transformations as well as the relationship to maximum attractors and Archimax copulas is investigated.
Klement, E.P.   +2 more
openaire   +4 more sources

Hidden Markov graphical models with state‐dependent generalized hyperbolic distributions

open access: yesCanadian Journal of Statistics, EarlyView.
Abstract In this article, we develop a novel hidden Markov graphical model to investigate time‐varying interconnectedness between different financial markets. To identify conditional correlation structures under varying market conditions and accommodate shape features embedded in financial time series, we rely upon the generalized hyperbolic family of ...
Beatrice Foroni   +2 more
wiley   +1 more source

Nonlinear permuted Granger causality

open access: yesCanadian Journal of Statistics, EarlyView.
Abstract Granger causality is an established, contentious method that seeks causal temporal connections via association and precedence. While not true causal inference, it assists in mapping networks of information flow that may warrant further study.
Noah D. Gade, Jordan Rodu
wiley   +1 more source

Two Copulas associated with extremum(与极值相关的两类Copula)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2008
利用阿基米德Copula,生存阿基米德Copula,对随机变量与极值统计量之间的相依关系进行了初步的探讨,构造了两类Copula.并在此基础上提出了一种生成Copula的方法.这种方法将特殊Copula函数结构应用到逆方法之中,为生成具有特殊性质的相依结构提供了平台.
WANGQin(王沁)   +2 more
doaj   +1 more source

Freedom in constructing quasi-copulas vs. copulas

open access: yesFuzzy Sets and Systems
26 pages, 5 figures, accepted in Fuzzy Sets and ...
Matjaz Omladic, Nik Stopar
openaire   +4 more sources

Copula‐based joint modelling of emergency department visits with time‐varying dependence

open access: yesCanadian Journal of Statistics, EarlyView.
Abstract Jointly modelling multiple correlated count time series is essential in health services research, where outcomes like emergency visits for mental health and substance use often evolve together. Ignoring these dependencies can obscure meaningful trends and limit the effectiveness of policy evaluation.
Guanjie Lyu, Cindy Feng, Lihui Liu
wiley   +1 more source

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