Results 41 to 50 of about 30,945,589 (274)

Modelos black-litterman e GARCH ortogonal para uma carteira de títulos do tesouro nacional [PDF]

, 2015
Uma grande dificuldade da gestao financeira e conseguir associar metodos quantitativos as formas tradicionais de gestao, em um unico arranjo. O estilo tradicional de gestao tende a nao crer, na devida medida, que metodos quantitativos sejam capazes de captar toda sua visao e experiencia, ao passo que analistas quantitativos tendem a subestimar a ...
openaire   +1 more source

Deciphering the Photopolymerization‐Induced Nanostructures and Interface Formation for Submicrometer Additive Manufacturing

Advanced Functional Materials, EarlyView.
This work reveals the UV‐curing‐induced monomer‐rich domain, oligomer‐rich domain, and entangled oligomer domain. The cured submicron films in stressed state induce interlayer nano‐wrinkle structures during the deposition of the second layer. Stress‐free cured films in relaxed state form non‐diffusive, diffusive and semi‐diffusive interlayer ...
Shouzheng Chen, Yufeng Zhai, Jungui Zhou, Lixing Li, Simon Schraad, Guangjiu Pan, Xuehe Jiang, Sarathlal Koyiloth Vayalil, Rolf A. T. M. van Benthem, Julien R. G. Navarro, Johan F. G. A. Jansen, Mats K. G. Johansson, Peter Müller‐Buschbaum, Stephan V. Roth   +13 more
wiley   +1 more source

DÖVİZ KURU OYNAKLIĞINDA ASİMETRİK İŞARET VE BOYUT YANLILIĞININ TEST EDİLMESİ: EURO/TL KUR OYNAKLIĞI ÜZERİNE BİR İNCELEME

SDÜ Vizyoner Dergisi, 2019
Bu çalışmanın amacı Engel ve Ng (1993) nin işaret ve boyut yanlılığı testleri ile belirlenen asimetrik etkileri dikkate alarak döviz kurlarında yaşanan oynaklığın modellenmesidir.
Hakan Demirgil, Sinan Yıldırım, Zübeyde Çiçek   +2 more
doaj   +1 more source

Hydro‐ and Lipophilicity of Molecular‐Size‐Controlled Hydrogel Drug Carriers

Advanced Materials Technologies, EarlyView.
We investigate nano‐sized hydrogel drug carriers with tailored hydro‐ and lipophilicity. We design their encapsulation and structure‐forming capabilities and follow them in real time during fabrication using time‐resolved and in situ grazing incidence x‐ray scattering.
Elisabeth Erbes, Naireeta Biswas, Calvin J. Gavillet, Matthias Schwartzkopf, Krishnayan Basuroy, Qing Chen, Andrei Chumakov, Susann Frenzke, Marc Gensch, Korneliya Gordeyeva, Patrycja Kielb, Sonja Kirchner, Volker Körstgens, Peter Müller‐Buschbaum, Henrike M. Müller‐Werkmeister, Jan Rubeck, Sreevidya Thekku Veedu, Jose de Jesus Velazquez‐Garcia, Vivian Waclawek, Daniel Söderberg, Stephan V. Roth, Simone Techert   +21 more
wiley   +1 more source

Silicon‐Bridged Homocyclopentadienides: Metal‐Assisted Facile Ring Expansion of Cyclopentadienide by Transient Imino(Metallophosphino)Silylenes

Angewandte Chemie, EarlyView.
We demonstrate the facile aromatic C─C bond cleavage of cyclopentadienide mediated by transient imino(metallophosphino)silylenes, enabling the transformation of an aromatic system into a homoaromatic species. The steric bulk of the phosphino substituent, together with the weak interaction between the coinage metal and the cyclopentadienide ligand, are ...
Huaiyuan Zhu, Xufang Liu, Shicheng Dong, Jun Zhu, Shigeyoshi Inoue   +4 more
wiley   +2 more sources

The Impact of Investor Sentiment on Housing Prices and the Property Stock Index Volatility in South Africa

Real Estate Management and Valuation, 2023
While prior studies have examined the predictive effect of macroeconomic and country risk components on property stock index dynamics, limited explanations exist in the literature regarding the time-varying effect of investor sentiment on housing prices.
Muzindutsi Paul-Francois, Apau Richard, Muguto Lorraine, Muguto Hilary Tinotenda   +3 more
doaj   +1 more source

Elastomeric Core‐Conductive Shell Slurry Additive Stabilizes High‐Voltage NCM811 Cathodes via Mechanical‐Electrical Dual Regulation

Advanced Science, EarlyView.
A core‐shell ASA slurry additive constructs a mosaic‐like interface on high‐voltage NCM811 cathodes. This architecture decouples interfacial functions: the elastomeric core buffers mechanical stress to prevent microcracking, while the conductive shell facilitates rapid ion/electron transport, enabling mechanical‐electrical dual regulation and enhanced ...
Jiamin Duan, Xingchen Liu, Jiapei Li, Zhuijun Xu, Said Amzil, Baohu Wu, Yiyao Xiao, Wenjun Zhang, Tong Yu, Xiaohong Li, Wenwen Xue, Xiangyu Chen, Changwei Liu, Jie Gao, Peter Müller‐Buschbaum, Ya‐Jun Cheng, Yonggao Xia   +16 more
wiley   +1 more source

Social media and financial markets: The impact of Twitter sentiment on the Johannesburg Stock Exchange

Modern Finance
This study examines the effect of Twitter-derived investor sentiment on stock market volatility in South Africa using daily data for the JSE All Share Index from 2016 to 2023.
Thiasha Naidoo
doaj   +1 more source

PREVISÃO DA CONCENTRAÇÃO DE OZÔNIO NA REGIÃO DA GRANDE VITÓRIA, ESPÍRITO SANTO, BRASIL, UTILIZANDO O MODELO ARMAX-GARCH

Revista Brasileira de Meteorologia, 2015
O objetivo deste trabalho foi estimar e prever a concentração horária de ozônio na Região da Grande Vitória, Espírito Santo, Brasil, utilizando um modelo ARMAX-GARCH, para o período 01/01/2011 a 31/12/2011. Foram utilizados dados da rede de monitoramento
EDSON ZAMBON MONTE, TACIANA TOLEDO DE ALMEIDA ALBUQUERQUE, VALDÉRIO ANSELMO REISEN   +2 more
doaj   +1 more source

A New Ordered Transformation‐Induced Plasticity Enables Exceptional Strength and Ductility in a B2 Medium‐Entropy Alloy

Advanced Science, EarlyView.
A novel B2‐ordered Ti‐Zr‐V‐Al medium‐entropy intermetallic is developed through controlled metastability engineering, which activates an ordered TRIP effect via a new B2→D019‐α2 transformation with a distinctive {0001}α2//{110}B2, <11‐20>α2//<100>B2 orientation relationship. This alloy achieves an elongation of ∼7%, a strength of ∼1.1 GPa, and superior
Chaohua Li, Yidong Wu, Boyuan Zheng, Xu Zhang, Xiongjun Liu, Wenli Song, Ning An, Chengbo Xiao, Xidong Hui   +8 more
wiley   +1 more source