Results 11 to 20 of about 2,029,317 (267)

Multicolor Holographic Display of 3D Scenes Using Referenceless Phase Holography (RELPH)

open access: yesPhotonics, 2021
In this paper, we present a multicolor display via referenceless phase holography (RELPH). RELPH permits the display of full optical wave fields (amplitude and phase) using two liquid crystal phase-only spatial light modulators in a Michelson ...
André F. Müller   +3 more
doaj   +1 more source

The bias bias

open access: yesJournal of Business Research, 2015
AbstractIn marketing and finance, surprisingly simple models sometimes predict more accurately than more complex, sophisticated models. Here, we address the question of when and why simple models succeed — or fail — by framing the forecasting problem in terms of the bias–variance dilemma.
Brighton, Henry, Gigerenzer, Gerd
openaire   +3 more sources

Computer generated volume holograms fabricated on a coreless fiber tip by two photon polymerization [PDF]

open access: yesEPJ Web of Conferences
Computer-generated volume holograms (CGVHs) contain 3D refractive index modulations designed to create complex-shaped wave fields for various optical applications.
Jalili Mansoureh   +3 more
doaj   +1 more source

Optical In-Process Measurement: Concepts for Precise, Fast and Robust Optical Metrology for Complex Measurement Situations

open access: yesApplied Sciences, 2021
Optical metrology is a key element for many areas of modern production. Preferably, measurements should take place within the production line (in-process) and keep pace with production speed, even if the parts have a complex geometry or are difficult to ...
Ralf B. Bergmann   +2 more
doaj   +1 more source

Qualifying parabolic mirrors with deflectometry [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2013
Phase-measuring deflectometry is a full-field gradient technique that lends itself very well to testing reflective optical surfaces. In the past, the industry’s interest has been focussed mainly on the detection of defects and ripples, since it is easy ...
Burke J.   +4 more
doaj   +1 more source

Catalogue of bias: publication bias [PDF]

open access: yesBMJ Evidence-Based Medicine, 2018
Dickersin and Min define publication bias as the failure to publish the results of a study ‘on the basis of the direction or strength of the study findings’.1 This non-publication introduces a bias which impacts the ability to accurately synthesise and describe the evidence in a given area.2 Publication bias is a type of reporting bias and closely ...
Nicholas J DeVito, Ben Goldacre
openaire   +2 more sources

Improving the calibration of phase measuring deflectometry by a polynomial representation of the display shape

open access: yesJournal of the European Optical Society-Rapid Publications, 2019
Background Phase measuring deflectometry is a highly precise and full field metrology technique for specular surfaces based on the distortion of known reference patterns observed as a reflection at the surface under test.
Jonas Bartsch   +2 more
doaj   +1 more source

The Marine-Derived Fungus Clonostachys rosea, Source of a Rare Conjugated 4-Me-6E,8E-hexadecadienoic Acid Reducing Viability of MCF-7 Breast Cancer Cells and Gene Expression of Lipogenic Enzymes

open access: yesMarine Drugs, 2015
A marine-derived strain of Clonostachys rosea isolated from sediments of the river Loire estuary (France) was investigated for its high lipid production. The fungal strain was grown on six different culture media to explore lipid production changes.
Ana Camila Dos Santos Dias   +8 more
doaj   +1 more source

Experimental and Numerical Investigation of an Overheated Aluminum Droplet Wetting a Zinc-Coated Steel Surface

open access: yesMetals, 2017
Wetting steel surfaces with liquid aluminum without the use of flux can be enabled by the presence of a zinc-coating. The mechanisms behind this effect are not yet fully understood.
Marius Gatzen   +4 more
doaj   +1 more source

Dry metal forming of high alloy steel using laser generated aluminum bronze tools

open access: yesMATEC Web of Conferences, 2015
Regarding the optimization of forming technology in economic and environmental aspects, avoiding lubricants is an approach to realize the vision of a new green technology. The resulting direct contact between the tool and the sheet in non-lubricated deep
Freiße Hannes   +3 more
doaj   +1 more source

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