scholarly journals Developing hierarchical density‐structured models to study the national‐scale dynamics of an arable weed

2021 ◽  
Author(s):  
Robert M. Goodsell ◽  
Dylan Z. Childs ◽  
Matthew Spencer ◽  
Shaun Coutts ◽  
Remi Vergnon ◽  
...  
Keyword(s):  
2014 ◽  
Vol 11 (1) ◽  
pp. 90-100
Author(s):  
Yigit Aydede

The present study intends to reveal spatial regularities between non-immigrant and immigrant numbers in two different ways. First, it questions the existence of those regularities when spatial scales get finer. Second, it uses pooled data over four population censuses covering the period from 1991 to 2006, which enabled us to apply appropriate techniques to remove those unobserved fixed effects so that the estimations would accurately identify the linkage between local immigrant and non-immigrant numbers. The results provide evidence about the existence of negative spatial regularities between non-immigrant and immigrant numbers in Canada at national scale.


2017 ◽  
Author(s):  
Laura A. Lukes ◽  
◽  
J. Nelson ◽  
K.C. Kerby-Patel ◽  
W.C. Liles ◽  
...  

Plants ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1495
Author(s):  
Muhammad Javaid Akhter ◽  
Bo Melander ◽  
Solvejg Kopp Mathiassen ◽  
Rodrigo Labouriau ◽  
Svend Vendelbo Nielsen ◽  
...  

Vulpia myuros has become an increasing weed problem in winter cereals in Northern Europe. However, the information about V. myuros and its behavior as an arable weed is limited. Field and greenhouse experiments were conducted in 2017/18 and 2018/19, at the Department of Agroecology in Flakkebjerg, Denmark to investigate the emergence, phenological development and growth characteristics of V. myuros in monoculture and in mixture with winter wheat, in comparison to Apera spica-venti, Alopecurus myosuroides and Lolium multiflorum. V. myuros emerged earlier than A. myosuroides and A. spica-venti but later than L. multiflorum. Significant differences in phenological development were recorded among the species. Overall phenology of V. myuros was more similar to that of L. multiflorum than to A. myosuroides and A. spica-venti. V. myuros started seed shedding earlier than A. spica-venti and L. multiflorum but later than A. myosuroides. V. myuros was more sensitive to winter wheat competition in terms of biomass production and fecundity than the other species. Using a target-neighborhood design, responses of V. myuros and A. spica-venti to the increasing density of winter wheat were quantified. At early growth stages “BBCH 26–29”, V. myuros was suppressed less than A. spica-venti by winter wheat, while opposite responses were seen at later growth stages “BBCH 39–47” and “BBCH 81–90”. No significant differences in fecundity characteristics were observed between the two species in response to increasing winter wheat density. The information on the behavior of V. myuros gathered by the current study can support the development of effective integrated weed management strategies for V. myuros.


2017 ◽  
Vol 68 (2) ◽  
pp. 235-248 ◽  
Author(s):  
B. G. Rawlins ◽  
B. Marchant ◽  
S. Stevenson ◽  
W. Wilmer

2021 ◽  
pp. 1-14
Author(s):  
Laura Zavattero ◽  
Raffaella Frondoni ◽  
Giulia Capotorti ◽  
Riccardo Copiz ◽  
Carlo Blasi

2021 ◽  
Vol 108 ◽  
pp. 103191
Author(s):  
Julierme Zimmer Barbosa ◽  
Giovana Poggere ◽  
Sérgio Henrique Godinho Silva ◽  
Marcelo Mancini ◽  
Antonio Carlos Vargas Motta ◽  
...  

2021 ◽  
Vol 175 ◽  
pp. 104113
Author(s):  
Michael Owor ◽  
Andrew Muwanga ◽  
Callist Tindimugaya ◽  
Richard G. Taylor

Author(s):  
Hugo Lopes ◽  
Andrea Rodrigues Lopes ◽  
Helena Farinha ◽  
Ana Paula Martins

AbstractBackground Although clinical pharmacy is a crucial part of hospital pharmacist’s day-to-day activity, its performance is not usually subject to a holistic assessment. Objective To define a set of relevant and measurable clinical pharmacy and support activities key performance indicators (cpKPI and saKPI, respectively). Setting Portuguese Hospital Pharmacies. Method After a comprehensive literature review focusing on the metrics already in use in other countries, several meetings with directors of hospital pharmacies were conducted to obtain their perspectives on hospital pharmacy practices and existing metrics. Finally, five rounds with a panel of 8 experts were performed to define the final set of KPIs, where experts were asked to score each indicator’ relevance and measurability, and encouraged to suggest new metrics. Main outcome measure The first Portuguese list of KPIs to assess pharmacists’ clinical and support activities performance and quality in hospital pharmacies. Results A total of 136 KPIs were assessed during this study, of which 57 were included in the original list and 79 were later added by the expert panel. By the end of the study, a total of 85 indicators were included in the final list, of which 40 are considered to be saKPI, 39 cpKPI and 6 neither. Conclusion A set of measurable KPIs was established to allow for benchmarking within and between Portuguese hospital Pharmacies and to elevate professional accountability and transparency. Future perspectives include the use of both cpKPIs and saKPIs on a national scale to identify the most efficient performances and areas of possible improvement.


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