Results 1 to 10 of about 228,817 (308)

Spatiotemporal evolution pattern and convergence of healthy city development in China [PDF]

open access: yesInternational Journal of Health Geographics
Background Urbanization-induced urban diseases threaten public health. The World Health Organization launched the Healthy City Initiative in 1986, and China has incorporated it into the Healthy China 2030 strategy.
Fulei Jin, Yanli Geng, Xigang Zhang
doaj   +2 more sources

Regional differences, distribution dynamics and convergence of multi-dimensional grain security level in major grain producing areas in China. [PDF]

open access: yesPLoS ONE
Based on panel data from China's 13 major grain - producing provinces between 2014 and 2023, this study constructs a multidimensional grain security evaluation index system, incorporating the dimensions of quantity, quality, ecology, and capacity.
Jing Cheng, Jiaqi Guo
doaj   +2 more sources

Analysis and Proof for Convergence Region of Vision Iterative Method

open access: yesAdvanced Materials Research, 2011
We have presented a new vision solution method which has good real-time characteristic. It satisfies the convergence characteristic in some regions, which is the premise for running of our solution method. In this paper, we present one convergence region
Li Juan Qin, Yu Lan Hu
exaly   +2 more sources

On Convergence of Binary Trust-Region Steepest Descent [PDF]

open access: yesJournal of Nonsmooth Analysis and Optimization, 2023
Binary trust-region steepest descent (BTR) and combinatorial integral approximation (CIA) are two recently investigated approaches for the solution of optimization problems with distributed binary-/discrete-valued variables (control functions).
Paul Manns   +4 more
doaj   +1 more source

European Region Types in EU-25 [PDF]

open access: yesThe European Journal of Comparative Economics, 2007
In this paper a categorization of 1,212 European NUTS 3 regions is conducted by means of factor and cluster analysis according to economic structure and spatial characteristics.
Christine M. Aumayr
doaj   +1 more source

Real convergence in the CEECs, Euro Area accession and the Role of Romania [PDF]

open access: yesThe European Journal of Comparative Economics, 2010
The paper is aimed at studying the absolute and conditional convergence in the Central and Eastern European countries. Given that these countries have common roots and their economies have experienced similar challenges over time, the regional ...
Raileanu Szeles, Monica   +1 more
doaj   +1 more source

U-Pb zircon geochronology of volcaniclastics and encasing sandstones from the Chhoti Khatu section: Bearing on the Neoproterozoic Marwar Supergroup stratigraphy and its global implications

open access: yesGeosystems and Geoenvironment, 2023
An isolated ∼40 m thick outcrop section, namely the Chhoti Khatu section, containing an embedded volcaniclastic layer, in the southeast of the Marwar Basin, western India (erstwhile stratigraphically correlated with the Jodhpur Group of the Marwar ...
Partha Pratim Chakraborty   +4 more
doaj   +1 more source

Some convergence regions of branched continued fractions of special form

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2013
Some circular and parabolic convergence regions for branched continued fractions of special form are established.
O.E. Baran
doaj   +3 more sources

On convergence criteria for branched continued fraction

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2020
The starting point of the present paper is a result by E.A. Boltarovych (1989) on convergence regions, dealing with branched continued fraction \[\sum_{i_1=1}^N\frac{a_{i(1)}}{1}{\atop+}\sum_{i_2=1}^N\frac{a_{i(2)}}{1}{\atop+}\ldots{\atop+}\sum_{i_n=1}^N\
T.M. Antonova
doaj   +1 more source

Improvement of Fuzzy Newton Power Flow Convergence

open access: yesEnergies, 2023
In order to address the convergence issue in fuzzy power flow calculations, this paper proposes an analytical approach based on the Levenberg–Marquardt method, aiming to improve the convergence of the fuzzy Newton power flow method.
Ligang Zhao   +5 more
doaj   +1 more source

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