Results 71 to 80 of about 38,888 (250)
Weather Attention in Online Discourse and Price Uncertainty in Agricultural Futures Markets
Agribusiness, EarlyView.ABSTRACT Weather is a central determinant of production risk in agricultural markets, but markets respond not only to weather conditions themselves, but also to how those conditions are noticed, framed, and interpreted in public discourse. In this setting, real‐time online weather discussions may shape price uncertainty by influencing how market ...
Mario A. Ortez +3 more
wiley +1 more source
التنبؤ بهامش ربح الاكتتاب في سوق التأمين المصري باستخدام النموذج الهجين ARIMA- GARCH [PDF]
Maǧallaẗ Al-Buḥūṯ Al-Mālīyyaẗ wa Al-Tiğāriyyaẗتعتبر وظيفة الاكتتاب من أحد أهم الوظائف الفنية لشركات التأمين، حيث أن نتائج أعمال شركات التأمين وقدرتها على الاستمرار في السوق تعتمد بشكل أساسي على السياسة الاكتتابية للشركة، بجانب الاعتماد على كل من السياسة الاستثمارية وسياسات إعادة التأمين.ويمثل معدل ...
دعاء حسب الله +1 more
doaj +1 more source
Advanced Intelligent Discovery, EarlyView.An AI‐assisted approach is introduced to decode synthesis–performance relationships in metal‐organic framework‐derived supercapacitor materials using Bayesian optimization and predictive modeling, streamlining the search for optimal energy storage properties.
David Gryc +8 more
wiley +1 more source
Regime switching GARCH models [PDF]
We develop univariate regime-switching GARCH (RS-GARCH) models wherein the conditional variance switches in time from one GARCH process to another. The switching is governed by a time-varying probability, specified as a function of past information.
Luc, BAUWENS +2 more
core
Thermally Drawn Bioelectric Catheters: Enabling Proprioceptive Endovascular Navigation
Advanced Intelligent Systems, EarlyView.This work introduces a novel bioelectric navigation system eliminates the need for harmful fluoroscopy during endovascular surgeries. A bespoke 16‐electrode catheter is fabricated using rapid thermal drawing and laser micro‐machining. Paired with a real‐time tracking algorithm fusing vascular geometry detection and distance estimation, this technology ...
Alex Ranne +8 more
wiley +1 more source
Does Exchange Rate Uncertainty Effects Exports? A Disaggregated Study of Pakistan Economy [PDF]
International Journal of Management, Accounting and Economics, 2016 This study has been conducted to find out the effect of exchange rate uncertainty on the export volume of Pakistan to its major trading partner countries.
Muhammad Shoaib +3 more
doaj
Wake me up before you GO-GARCH [PDF]
In this paper we present a new three-step approach to the estimation of Generalized Orthogonal GARCH (GO-GARCH) models, as proposed by van der Weide (2002).
Boswijk, H.P., Weide, R. van der
core
Katalytischer Schwefelatomtransfer vermittelt durch einen Bis(disulfido)‐Titankomplex
Angewandte Chemie, EarlyView.Mehrelektronentransformationen mit Titan sind aufgrund der limitierten Zugänglichkeit niedervalenter Vorstufen bislang nur unzureichend untersucht. Die Vier‐Elektronen‐Aktivierung von elementarem Schwefel durch einen Ti(IV)‐Komplex führt zu einem seltenen Bis(disulfido)‐Titankomplex, der die effiziente katalytische Synthese von Isothiocyanaten aus ...
Sebastian Samir Cremer +3 more
wiley +1 more source
Multimodality and the GARCH Likelihood [PDF]
We investigate several aspects of GARCH models which are relevant for empirical applications. In particular, we note that the inclusion of a dummy variable as regressor can lead to multimodality in the GARCH likelihood.
Jurgen A. Doornik, Marius Ooms
core
Volatility Timing in CPF Investment Funds in Singapore: Do They Outperform Non-CPF Funds?
Risks, 2019 The purpose of this study is to examine the volatility-timing performance of Singapore-based funds under the Central Provident Fund (CPF) Investment Scheme and non-CPF linked funds by taking into account the currency risk effect on internationally ...
Xiaoyi Shen +2 more
doaj +1 more source