Results 101 to 110 of about 1,364,047 (294)

Modelo Matemático da Pirólise do Etano em Forno Tubular

open access: yesTrends in Computational and Applied Mathematics, 2012
Neste trabalho é proposto um modelo matemático para o processo de pirólise do etano em forno tubular de serpentina. O meio reagente é descrito por um mecanismo constituído por 63 reações químicas e 19 espécies.  considera-se também alterações da pressão,
Ângela Patricia Spilimbergo   +2 more
doaj   +1 more source

Return and Volatility Spillovers Among Major Cotton Markets

open access: yesAgribusiness, EarlyView.
ABSTRACT This study explores return and volatility transmission among major cotton markets. Several events have disrupted cotton supply and demand in recent years, leading to heightened price volatility and significant shifts in market interconnections.
Susmitha Kalli   +3 more
wiley   +1 more source

Heterogeneity in Food Price Inflation Convergence Across the EU: Evidence From Club Dynamics and Structural Breaks

open access: yesAgribusiness, EarlyView.
ABSTRACT This study examines food price inflation rate convergence among EU27 Member States from 2005 to 2024, focusing on structural breaks, external shocks, and regional disparities. Using panel unit root tests and club convergence analysis, the findings reveal no overall convergence but identify multiple convergence clubs.
Tibor Bareith, Imre Fertő
wiley   +1 more source

Pricing Dynamics in the US Hemp Market: A Vertical Price Transmission Analysis of the Hemp Value Chain

open access: yesAgribusiness, EarlyView.
ABSTRACT The US hemp market is a new and nascent industry that has been devoid of research for about half a century. This study examined the effects of exogenous shock on price at each phase of the value chain—Farm (hemp biomass), and its impact on prices at other phases of the value chain—Intermediary Processor (crude cannabidiol hemp) and Final ...
Solomon Odiase   +2 more
wiley   +1 more source

As revoluções russas: o ciclo autoritário, 1918-1921. As bases do socialismo soviético = The Russian revolutions: the authoritarian cycle, 1918-1921. The foundations of Soviet socialism = Las revoluciones rusas: el ciclo autoritario, 1918-1921. Los fundamentos del socialismo soviético

open access: yesEstudos Ibero Americanos, 2021
O artigo estuda o crescimento das tendências autoritárias no contexto das revoluções russas e do socialismo soviético. Depois de um período de transição, entre outubro de 1917 e julho de 1918, tais tendências se consolidariam durante as guerras civis ...
Reis, Daniel Aarão
doaj  

Impressões da Rússia

open access: yesHorizontes Antropológicos, 1999
Não mais do que “impressões”, este texto, sem pretensões científicas, imagina dar conta a um eventual leitor dos pensamentos oferecidos ao próprio autor pela rica experiência de uma cidade (e de um país) fascinante, autêntico laboratório onde a ...
Pierre Sanchis
doaj   +1 more source

Systematic Review and Meta‐Analysis of Short‐ and Long‐Term Outcomes Following Natural Orifice Specimen Extraction for Colon Cancer

open access: yesAnnals of Gastroenterological Surgery, EarlyView.
ABSTRACT Background Natural orifice specimen extraction (NOSE) in colon cancer surgery raises concerns about intra‐abdominal infection, peritoneal seeding, and local recurrence due to possible tumor cell implantation. This systematic review and meta‐analysis compares complete intracorporeal resection with NOSE versus conventional laparoscopic colon ...
Daichi Kitaguchi   +4 more
wiley   +1 more source

Europa Ocidental e Rússia: relações de poder [PDF]

open access: yes, 2017
A II Semana Acadêmica de Relações Internacionais foi realizada em novembro de 2017, na Universidade Federal da Integração Latino-Americana (UNILA), nas dependências do campus do Parque Tecnológico de Itaipu (PTI) e do campus Jardim Universitário (JU)O ...
Peixoto, Gabriel Rodrigues   +2 more
core  

Large Language Model‐Based Chatbots in Higher Education

open access: yesAdvanced Intelligent Systems, Volume 7, Issue 3, March 2025.
The use of large language models (LLMs) in higher education can facilitate personalized learning experiences, advance asynchronized learning, and support instructors, students, and researchers across diverse fields. The development of regulations and guidelines that address ethical and legal issues is essential to ensure safe and responsible adaptation
Defne Yigci   +4 more
wiley   +1 more source

L'Ètica periodística en el context postsoviètic: el cas de la televisió a Rússia [PDF]

open access: yes, 2011
ètica periodística, televisió russa, televisió soviètica, NTV, Putin, censura.Media ethics in the post-Soviet context: the case of Russian television The dissolution of the Soviet Union, the fall of the Soviet ideological system, the entrance of the ...
Guerrero-Solé, Frederic
core   +1 more source

Home - About - Disclaimer - Privacy