Results 71 to 80 of about 2,277,043 (331)
Advanced Functional Materials, EarlyView.The conductive and stretchable photothermal CuSe fiber is fabricated for versatile biomedical applications. This CuSe fiber functions as a reliable wearable strain sensor and heater due to its high conductivity, stretchability and photothermal efficiency.
Kukro Yoon +9 more
wiley +1 more source
Abnormal expected utility and event study abnormal returns
Economics Letters, 1994 Abstract Event study is employed by measuring the abnormal return around the event date. If risk changes this methodology is questionable. We suggest the concept of abnormal expect utility which relies on the whole distribution and not just the mean return.
Department of Finance and Real Estate Business Building, University of Florida, Gainesville, FL 32615-2017, USA ( host institution ) +2 more
openaire +2 more sources
Advanced Functional Materials, EarlyView.Flexible piezoresistive pressure sensors underpin wearable and soft electronics. This review links sensing physics, including contact resistance modulation, quantum tunneling and percolation, to unified materials/structure design. We highlight composite and graded architectures, interfacial/porous engineering, and microstructured 3D conductive networks
Feng Luo +2 more
wiley +1 more source
Abnormal returns, risk, and options in large data sets [PDF]
Statistica Neerlandica, 1998 Large data sets in finance with millions of observations have become widely available. Such data sets enable the construction of reliable semi‐parametric estimates of the risk associated with extreme price movements. Our approach is based on semi‐parametric statistical extreme value analysis, and compares favorably with the conventional finance normal ...
Silvia Caserta +2 more
openaire +3 more sources
The Effects of Twitter Sentiment on Stock Price Returns [PDF]
, 2015 Social media are increasingly reflecting and influencing behavior of other complex systems. In this paper we investigate the relations between a well-know micro-blogging platform Twitter and financial markets.
A Gross-Klussmann +45 more
core +6 more sources
Advanced Functional Materials, EarlyView.This paper presents a digital microfluidics‐based technique for transferring and reconfiguring soft nanomembranes. Laser‐machined nanothin membranes are picked up, transported, and aligned via tailored surface tension and the actuation of water droplets, enabling the development of flexible electronics, the integration of functional materials on 3D ...
Quang Anh Nguyen +15 more
wiley +1 more source
South African Journal of Business Management, 1991 The objective with this article was to determine whether insider trading related to unannounced dividend policy changes provided abnormal returns for shares listed on the Johannesburg Stock Exchange (JSE).
Narendra Bhana
doaj +1 more source
Mechanical and Electrical Phenotype of hiPSC‐Cardiomyocytes on Fibronectin‐Based Hydrogels
Advanced Healthcare Materials, EarlyView.We introduce fibronectin‐based PEG hydrogels with controlled rigidity to enable the culture of iPSC‐derived cardiomyocytes. These substrates offer an alternative to the current culture of these cells on fibronectin‐coated glass, providing enhanced structural and functional behavior. The system provides a more physiologically relevant platform to assess
Ana Da Silva Costa +8 more
wiley +1 more source
The Informational Content of Abnormal Trading Volume of Shares Listed at Tehran Stock Exchange [PDF]
تحقیقات مالی, 2013 This paper investigates the informational content of abnormal volume trading of shares listed at Tehran Stock Exchange (TSE) using an event study methodology.
Adbol Reza Talaneh +2 more
doaj +1 more source
Advanced Healthcare Materials, EarlyView.A thermo‐responsive poly(2‐oxazoline)‐based injectable formulation is developed to modulate intraocular pressure (IOP) in both normal and hypotonic eyes. By adjusting the PEG content, the aggregation behavior is finely tuned, enabling IOP elevation without long‐term deposition.
Yuji Tanaka +2 more
wiley +1 more source