Results 61 to 70 of about 1,815 (137)

Population dinamic of snap bean pests on four growing seasons and its influence on productive parameters /
Flutuação populacional de insetos associados ao feijão-vagem c.v. UEL-1 em quatro épocas de plantio e seu efeito sobre as características produtivas

open access: yesSemina: Ciências Agrárias, 2003
Insect pests of snap beans in northern Paraná state – Brazil were monitored during four growing seasons: March – May, May – June, August – September, September – November. Adults of leafhopper (Empoasca kraemeri), whiteffly (Bemisia tabaci) and corn rootworm (Diabrotica speciosa) were monitored weekly using a cone trap.
Ronaldo Mitsuo Takada   +3 more
openaire   +1 more source

A SIR-type model describing the successive waves of COVID-19. [PDF]

open access: yesChaos Solitons Fractals, 2021
Muñoz-Fernández GA   +2 more
europepmc   +1 more source

The persistence of poverty: true state dependence or unobserved heterogeneity? Some evidence from the Italian Survey on Household Income and Wealth [PDF]

open access: yes
Evidence from several countries is that any household experiencing poverty today is much more likely to experience it again, which may be due to both unobserved heterogeneity (UH) and true state dependence (TSD).
Anna Giraldo   +2 more
core  

The Use of Informal Networks in Italian Labor Markets: Efficiency or Favoritisms? [PDF]

open access: yes
A number of papers considers the use of informal networks (the help of relatives, friends and acquaintances) to find an employment as an efficient mechanism to match workers to jobs. However, evidence in Italy shows that informal networks tend to be used
Ponzo, Michela, Scoppa, Vincenzo
core   +1 more source

Strategi Goal Setting Untuk Meningkatkan Motivasi Belajar Mahasiswa Ptm Unnes Mata Kuliah Kinematika Dan Dinamika [PDF]

open access: yes, 2013
The purpose of this study was to determine the effect of goal setting methods on learning outcomes of students of PTM in a kinematics and dynamics course. The subjects were PTM students even semester of 2011/2012, Engineering Faculty UNNES. This research
A, D. H. (Dony), W, R. D. (Rahmat)
core   +1 more source

A brief overview of the portuguese agriculture – its evolution, performance and current situation [PDF]

open access: yes, 2015
: In 2016 passes the thirty anniversary of the entrance of Portugal to the European Union, at the time the EEC (European Economic Community). This article is a brief and broad overview of the Portuguese agriculture and of its evolution, performance and ...
Marques, Carlos
core  

Gyrotactic phytoplankton in laminar and turbulent flows: a dynamical systems approach

open access: yes, 2019
Gyrotactic algae are bottom heavy, motile cells whose swimming direction is determined by a balance between a buoyancy torque directing them upwards and fluid velocity gradients.
Boffetta, Guido   +3 more
core   +1 more source

Does persistence of social exclusion exist in Spain? [PDF]

open access: yes
The aim of this paper is to analyze the causes leading to social exclusion dynamics. In particular, we wish to understand why any individual experiencing social exclusion today is much more likely to experience it again.
Ambra Poggi
core  

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