Results 111 to 120 of about 180,000 (261)

Assessment of the structural properties of timber members in situ : a probabilistic approach [PDF]

open access: yes, 2011
The assessment of the structural performance of existing timber structures is dependent, among other factors, on the capacity to evaluate the physical and mechanical properties of structural timber elements in situ.
Lourenço, Paulo B.   +2 more
core  

A Deep Learning Framework for Forecasting Medium‐Term Covariance in Multiasset Portfolios

open access: yesJournal of Forecasting, EarlyView.
ABSTRACT Forecasting the covariance matrix of asset returns is central to portfolio construction, risk management, and asset pricing. However, most existing models struggle at medium‐term horizons, several weeks to months, where shifting market regimes and slower dynamics prevail.
Pedro Reis, Ana Paula Serra, João Gama
wiley   +1 more source

Additive manufacturing of wood composite parts by individual layer fabrication - influence of process parameters on product properties

open access: yesComposites Part C: Open Access
Individual Layer Fabrication (ILF) is a novel additive manufacturing process that was developed to create objects with high wood content and high mechanical strength.
Birger Buschmann   +5 more
doaj   +1 more source

Workfare and forest cover: The case of NREGS in India

open access: yesJournal of the Agricultural and Applied Economics Association, EarlyView.
Abstract We examine the impacts of India's National Rural Employment Guarantee Scheme (NREGS), the world's largest workfare program, on forest cover as proxied by vegetation density. We estimate null effects on vegetation for the overall sample as well as for the subsample where we are best able to isolate changes in forest cover, but we find ...
Shourish Chakravarty   +3 more
wiley   +1 more source

Perennial Legumes Pueraria phaseoloides and Leucaena leucocephala Exhibit High Potential for Fertility Restoration of Degraded Mined Soils in Ghana

open access: yesJournal of Plant Nutrition and Soil Science, EarlyView.
Revegetating the subsoil layer of abandoned gold mined sites with the perennial legumes Leucaena Leucocephala, Pueraria phaseoloides and Gliricidia sepium without any soil amendments increases the content of soil organic carbon and important macro‐nutrients, which are crucial for restoring soil health and productivity. These improvements in soil health
Enoch Opoku   +4 more
wiley   +1 more source

Method for determination of load-bearing capacity of haunched zones made of IPE-type rolled [PDF]

open access: yesGrađevinski Materijali i Konstrukcije, 2019
Recently the author have conducted an extensive theoretical analysis programme on lateral stability of steel portal frames of hot-rolled profiles. Specific software has been developed for automatic modelling and applying the GMNIA method with a view to ...
Vassilev Marin
doaj  

Reconstructing post‐crisis recovery in the hinterlands of Constantinople: A high‐resolution first‐millennium CE pollen record from Lake Yeniçağa (NW Türkiye)

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Facing a novel plague pandemic, military invasions, and political–economic transformations, societies of the eastern Roman (Byzantine) empire had to adapt to a variety of pressures and new ways of exploiting their natural environments during the mid‐1st millennium CE.
Cristiano Vignola   +7 more
wiley   +1 more source

Influence of the semi‐rigid bolted steel joints on the frame behaviour

open access: yesJournal of Civil Engineering and Management, 2010
This research work describes the analysis of steel semi rigid joints that are subjected to bending and tension or compression. The main attention is focussed on the beam‐to‐beam and plate bolted joints. Usually influence of axial force is neglected.
Alfonsas Daniūnas, Kęstutis Urbonas
doaj  

Construction and Evaluation of a Ballistic Gelatin‐Based Simulator for Transcervical Chorionic Villus Sampling

open access: yesJournal of Ultrasound in Medicine, EarlyView.
Chorionic villus sampling (CVS) is a crucial prenatal diagnostic tool, but a declining number of procedures makes training a challenge. Here we describe a transcervical CVS simulator made from ballistic gelatin. Ninety‐three Maternal‐Fetal Medicine providers used the simulators during hands‐on workshops and completed surveys regarding their fidelity ...
Joshua F Nitsche   +3 more
wiley   +1 more source

Optimizing the design of timber components under decay and climate variations [PDF]

open access: yes, 2015
International audienceThe durability of timber structures can be affected by the isolated or combined actions of loading, moisture content, temperature, biological activity, etc.
Aoues, Y   +2 more
core   +1 more source

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