Results 71 to 80 of about 2,966,382 (366)

Cartographic estimation of tree parameter dynamics in Russian northwest [PDF]

Вопросы лесной науки, 2019
The article presents an analysis of spatial variability and temporal dynamics of tree plant condition indicators in the regions of the Russian Northwest over 2008 – 2010 based on the regular network of ground monitoring organised under the ICP Forests ...
S.V. Knyazeva, S.P. Eydlina
doaj   +1 more source

R&D and productivity : estimating production functions when productivity is endogenous [PDF]

, 2006
We develop a simple estimator for production functions in the presence of endogenous productivity change that allows us to retrieve productivity and its relationship with R&D at the firm level.
Doraszelski, Ulrich, Jaumandreu, Jordi
core   +3 more sources

Using a Supramolecular Approach to Engineer Modular Hydrogel Platforms for Culturing Protoplasts – from General Tissue Engineering to Cellular Agriculture

Advanced Biology, EarlyView.
Using supramolecular monomers, various hydrogel culture systems were formulated to culture protoplasts; including 2D, 2.5D, and 3D hydrogels. Depending on the culture platform, bioactive functionalization led to protoplast enlargement (2D and 2.5D) or plasmolysis (3D). This work shows the potential to modularly engineer synthetic platforms for cellular
Maritza M. Rovers, Erik J. Slootweg, Ferdinand C. O. Los, Patricia Y. W. Dankers   +3 more
wiley   +1 more source

The confinedness of undergrowth Picea obovata and Abies sibirica (Pinaceae) to tree-related microhabitats and their development features at various phases of post-fire succession in green-moss dark coniferous forests in the Northern Pre-Urals

Nature Conservation Research: Заповедная наука
Forest ecology frequently explores the role of microsite mosaics in forest communities for the regeneration of forest-forming tree species. The present study aims to find out whether the ontogenetic structure and differentiation of Siberian spruce (Picea
Alexei S. Efimenko, Tatiana Yu. Braslavskaya, Alexei A. Aleinikov, Alexander V. Tyurin   +3 more
doaj   +1 more source

Review of AI Image Enhancement Techniques for In-Vehicle Vision Systems Under Adverse Weather Conditions

World Electric Vehicle Journal
Nowadays, rapid advancements in computer vision, image processing, and artificial intelligence (AI) have significantly benefited autonomous vehicles.
Tiande Mo, Siqian Zheng, Wai-Yat Chan, Renhua Yang   +3 more
doaj   +1 more source

Toric fiber products versus Segre products [PDF]

Abhandlungen aus dem Mathematischen Seminar der Universit\"at Hamburg 84 (2014) , Issue 2 , pp 187-201, 2013
The toric fiber product is an operation that combines two ideals that are homogeneous with respect to a grading by an affine monoid. The Segre product is a related construction that combines two multigraded rings. The quotient ring by a toric fiber product of two ideals is a subring of the Segre product, but in general this inclusion is strict.
arxiv   +1 more source

Development and Validation of a One‐Dimensional Finite Difference Simulation Scheme for Polymer Laser Powder Bed Fusion with Application to the Effect of the Inter Layer Time

Advanced Engineering Materials, EarlyView.
The study presents an efficient simulation approach for the polymer laser powder bed fusion process polymers process, validated with polyamide 12, polyamide 6, and polyetherketoneketone. It shows that inter layer time affects part density, with 90s yielding dense parts.
Claas Bierwisch, Bastien Dietemann, Moritz Grünewald, Christian Schlör, Johannes Rudloff   +4 more
wiley   +1 more source

TEMPERATURE REGIME OF THE SOIL SURFACE IN DIFFERENT CONIFEROUS-BROADLEAVED FORESTS (ON THE EXAMPLE OF THE VALUEVSKY MOSCOW FOREST PARK) [PDF]

Вопросы лесной науки
The soil temperature regime is an important regulatory ecosystem function on which many biogeochemical processes depend. This article assesses the variation in the average monthly temperature of the surface organic soil horizon and litter stock in the ...
А. I. Kuznetsova, V. A. Kuznetsov, E. V. Tikhonova, D. N. Tebenkova   +3 more
doaj   +1 more source

Productivity policy [PDF]

, 2005
In this Briefing Note, we first present internationally comparative evidence on the UK's productivity performance (Section 2) and some of the underlying "drivers" of productivity identified by the government (Section 3).
Abramovsky, L., Bond, S., Harrison, R., Simpson, H.   +3 more
core  

Tracing Mobile Inventors – The Causality between Inventor Mobility and Inventor Productivity [PDF]

, 2006
This paper analyzes the causality between inventor productivity and inventor mobility. The results show that the level of education has no influence on inventor productivity. Making use of external sources of knowledge, on the contrary, has a significant
Hoisl, Karin
core   +2 more sources