Results 81 to 90 of about 26,049 (223)

On Exact and Approximate Solutions for Hard Problems: An Alternative Look [PDF]

open access: yes
We discuss in an informal, general audience style the da Costa-Doria conjecture about the independence of the P = NP hypothesis and try to briefly assess its impact on practical situations in economics.
F. A. Doria   +4 more
core  

Facet‐Specific PbS Quantum Dot Passivation Using Halide Perovskites for SWIR Photodetectors

open access: yesAdvanced Materials Interfaces, EarlyView.
PbS quantum dots (QDs) are emerging as powerful short‐wave infrared photodetectors, yet the passivation mechanism of large QDs by perovskites ‐ critical for their stability ‐ remains unexplained. Here, we unveil the ligand structure of CH3NH3PbI3 (MAPI)‐passivated 4‐nm PbS QDs using FTIR, XPS, SEM, NMR, and DFT.
L. Paillardet   +13 more
wiley   +1 more source

Model checking for partially linear models with missing responses at random

open access: yes
In this paper, we investigate the model checking problem for a partial linear model while some responses are missing at random. By imputation and marginal inverse probability weighted methods, two completed data sets are constructed.
Sun, Zhihua, Dai, Pengjie, Wang, Qihua
core  

A Reproducible and Scalable Process for High Yield Mesenchymal Stromal Cell Extracellular Vesicles Production

open access: yesAdvanced Materials Technologies, EarlyView.
Mesenchymal stem cell derived extracellular vesicles (MSC‐EVs) are a promising therapeutic tool for regenerative medicine. However, the field lacks a reproducible high‐yield production method to answer the quantities needed for clinical translation.
Christophe Wong   +7 more
wiley   +1 more source

Market efficiency and the Euro: the case of the Athens Stock Exchange

open access: yes, 2003
The efficient market hypothesis (EMH) is tested in the case of the Athens Stock Exchange (ASE) after the introduction of the euro. The underlying assumption is that stock prices would be more transparent; their performance easier to compare; the ...
Panagiotidis, T
core  

Automated Reliability Estimation over Partial Systematic Explorations

open access: yes, 2013
—Model-based reliability estimation of software sys-tems can provide useful insights early in the development process. However, computational complexity of estimating reliability met-rics such as mean time to first failure (MTTF) can be prohibitive both ...
Esteban Pavese   +2 more
core   +1 more source

Parallel Electrical Integration of Photo Bio Electrochemical Systems (photo‐BESs): Performance Gains and Load Dependency

open access: yesAdvanced Materials Technologies, EarlyView.
Parallel wiring of bioelectrochemical devices with conventional generators unexpectedly boosts output. A biophotovoltaic paired with a solar cell delivers up to 50% more power at low loads than their separate contributions; a plant microbial fuel cell shows similar current gains.
Valeria Marsaglia   +4 more
wiley   +1 more source

Нецентральное распределение статистики Фишера в гармоническом анализе

open access: yes, 2010
Использован тест Фишера для проверки гипотезы Hо относительно взаимозаменяемой альтернативы Нj. Получено распределение статистики Фишера при гипотезе Hj и вычислены вероятности правильного выбора этой гипотезы.Використано тест Фiшера для перевiрки ...
Пусь, В.В.
core   +1 more source

eco: R Package for Ecological Inference in 2x2 Tables

open access: yes
eco is a publicly available R package that implements the Bayesian and likelihood methods proposed in Imai, Lu, and Strauss (2008b) for ecological inference in 2 X 2 tables as well as the method of bounds introduced by (Duncan and Davis'53).
Ying Lu, Kosuke Imai, Aaron Strauss
core  

Simulating the referential properties of Dutch, German and English Root Infinitives in MOSAIC

open access: yes, 2008
Children learning many languages go through an Optional Infinitive stage in which they produce non-finite verb forms in contexts in which a finite verb form is required (e.g. ‘That go there’ instead of ‘That goes there’).
Pine, JM, Freudenthal, D, Gobet, F
core  

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