Results 11 to 20 of about 6,036 (219)
Trabajos de Prehistoria, 1999 Los trabajos arqueológicos de campo en el sitio de Gorny (habitado durante los siglos XVII-XV AC) han proporcionado una importante colección de materiales relacionados con actividades metalúrgicas (minerales, escorias, restos de fundición y objetos ...
Salvador Rovira
doaj +3 more sources
Cuadernos de Historia Contemporánea, 2012 This article outlines the positions of the army and the Falange in creating a corp of volunteers for taking part in the German Invasion of the USSR. The autor describes the volunteers experiences.
Jorge Martínez Reverte
openaire +6 more sources
Policy &Internet, Volume 15, Issue 3, Page 327-350, September 2023., 2023 Abstract US platform companies have dominated the global platform economy. Drawing on archival research, interviews, and company reports, we explore the reasons that Russia was able to develop platform companies that survived the entry of US firms. The chaotic post‐Soviet society paradoxically provided a sheltered environment within which domestic ...
Alina Kontareva, Martin Kenney
wiley +1 more source
Putting MARS into space. Non‐linearities and spatial effects in hedonic models
Papers in Regional Science, Volume 102, Issue 4, Page 871-896, August 2023., 2023 Abstract Multivariate Adaptive Regression Spline (MARS) is a simple and powerful non‐parametric machine learning algorithm that automatizes the selection of non‐linear terms in regression models. In this study, we propose using MARS in a spatial regression framework to account for potential non‐linearities and spatial effects in spatial regression ...
Fernando López, Konstatin Kholodilin
wiley +1 more source
Advanced Materials, Volume 35, Issue 24, June 15, 2023., 2023 The state‐of‐the‐art development of pristine, functionalized, and hybrid covalent organic frameworks (COFs) for photocatalytic organic transformations is presented, arranged in a clear order that states the types of bonds in COFs that can be used in photocatalysis and the photocatalytic mechanisms behind these COFs which influence the performance of ...
Alberto López‐Magano +7 more
wiley +1 more source
Addressing another threat to food safety: Conflict
PLANTS, PEOPLE, PLANET, Volume 5, Issue 3, Page 317-323, May 2023., 2023 The conflict between Ukraine and Russia will negatively affect not only food security but also food safety. Crops produced in Ukraine and Russia are at little risk of contamination by mycotoxins such as aflatoxin. However, due to the conflict, wheat, maize, sunflower, and other crops that would have been produced in and exported from Ukraine will need ...
Alejandro Ortega‐Beltran +1 more
wiley +1 more source
Achieving ultra‐high molecular weight polyethylenes by vanadium aroylhydrazine‐arylolates
Journal of Polymer Science, Volume 61, Issue 6, Page 482-490, 15 March 2023., 2023 Abstract A series of vanadium(V) aroylhydrazine‐arylolates is employed in ethylene polymerization to produce ultra‐high molecular weight polyethylene (UHMWPE), surprisingly extending to such coupling reactions beyond their common usage in the oxidation of hexanes and alcohols.
Hongyi Suo +7 more
wiley +1 more source
Investigando los aspectos de la educación de estudiantes en universidades técnicas
Propósitos y Representaciones, 2020 El artículo analiza los aspectos prácticos de la pedagogía que contribuyen al éxito de la formación de la educación cívica de los estudiantes en el espacio educativo de una universidad técnica.
E.N. Karpanina, A. Yu. Gura
doaj +1 more source
UNDERSTANDING GRAY ZONE WARFARE FROM MULTIPLE PERSPECTIVES
World Affairs, Volume 186, Issue 1, Page 81-104, Spring 2023., 2023 This study examines the dynamics of gray zone warfare by analyzing its conceptualization in the literature and through its practice in several recent examples. Ever‐increasing changes in the characteristics of contemporary warfare have complicated the security environment of the 21st century.
Tahir Mahmood Azad +2 more
wiley +1 more source