Differential timing of autumn migration between sex groups in adult European honey buzzards Pernis apivorus

2021 ◽  
pp. 175815592199736
Author(s):  
Michele Cento ◽  
Vittoria Malpassuti ◽  
Giacomo Dell’Omo ◽  
Nicolantonio Agostini
Keyword(s):  
Breeding Season ◽  
Field Survey ◽  
Central Africa ◽  
Autumn Migration ◽  
Gps Tracking ◽  
Southern Sweden ◽  
Central Mediterranean ◽  
Differential Timing ◽  
Made In

The European honey buzzard Pernis apivorus is a summer visitor in Europe, wintering mostly in West-central Africa. Previous studies concerning timing of autumn migration in relation to sex groups provided contrasting results. In particular, a field survey made in southern Sweden did not report differences in timing, while a satellite study via GPS tracking on six adults, three males, and three females, revealed that the latter departed earlier. The aim of this 4-year study is to further investigate the timing of autumn migration in this species carrying out observations at the Strait of Messina, a bottleneck located along the Central Mediterranean flyway, between August 10th and September 30th 2016–2019. Adult European honey buzzards concentrated the passage between late August early September, with females passing on average 5 days earlier than males. It is suggested that a different role of sexes concerning exhibition of territorial displays during the late breeding season, would explain differences between sex groups in timing of both moult and autumn migration.

scholarly journals The forms of intermediation in the space of Brazilian micro and small-sized enterprises: SEBRAE, from foundation to performance in the 21st century

2019 ◽  
Vol 26 (4) ◽  
Author(s):  
Vanise Rafaela Zivieri Ralio ◽  
Julio Cesar Donadone
Keyword(s):  
Qualitative Analysis ◽  
21St Century ◽  
Field Survey ◽  
Organizational Environment ◽  
Small Enterprises ◽  
Small Companies ◽  
Micro And Small Enterprises ◽  
Made In

Abstract This paper examines the role of the Brazilian service of Support for Micro and Small Enterprises – SEBRAE in Brazil in recent decades organizational environment and aims to contribute to the identification and description of your activity, as a way to understand the organizational transformations of the micro and small companies. Achieving this goal, a field survey was carried out in which were raised institutional documents, records and interviews with professionals connected to the institution. Qualitative analysis were made in the material through five sections: products, agents, customers, structure/strategy and scenario. From the chronological analysis of the data, they were organized in three distinct periods. Each of these temporal spaces significant for the institution’s understanding. In this way, it seeks to portray the processes of transformation and redirection through which SEBRAE has passed in each period, from the foundation to the 21st century, and its forms of intermediation of micro and small Brazilian companies.

scholarly journals Peasant Class Differentiation and Differentiated Structure of Credit: A Study of West Bengal, India

2016 ◽  
Vol 3 (3) ◽  
Author(s):  
Gouriprasad Nanda
Keyword(s):  
Field Survey ◽  
West Bengal ◽  
Primary Field ◽  
Made In

<div><p><em>This paper based on primary field survey deals with the nature and extent of peasant class differentiation and the differentiated structure of credit. Accessibility and distribution of credit will be our major concern of investigation. Particularly, we shall try to explore the role of institutional credit in the process of differentiation. The analysis made in this paper would help us to know first of all, to what extent households are dependent on private sources of credit vis-à-vis the institutional sources, secondly, whether credit absorption has something to do with the intensity of class differentiation.</em></p></div>

A history of botanical collections in the Luangwa Valley, Zambia

1998 ◽  
Vol 25 (2) ◽  
pp. 283-291
Author(s):  
P.S.M. PHIRI ◽  
D.M. MOORE
Keyword(s):  
Eighteenth Century ◽  
Environmental Impact ◽  
Impact Assessment ◽  
Vascular Plants ◽  
Central Africa ◽  
Peak Activity ◽  
Historical Account ◽  
History Of ◽  
The 1960S ◽  
Made In

Central Africa remained botanically unknown to the outside world up to the end of the eighteenth century. This paper provides a historical account of plant explorations in the Luangwa Valley. The first plant specimens were collected in 1897 and the last serious botanical explorations were made in 1993. During this period there have been 58 plant collectors in the Luangwa Valley with peak activity recorded in the 1960s. In 1989 1,348 species of vascular plants were described in the Luangwa Valley. More botanical collecting is needed with a view to finding new plant taxa, and also to provide a satisfactory basis for applied disciplines such as ecology, phytogeography, conservation and environmental impact assessment.

ASPECTS IN BUILDING A COMPANY WEB-SITE AND ITS ROLE FOR THE DEVELOPMENT OF BUSINESS

2018 ◽  
pp. 117-124
Author(s):  
Petar Halachev ◽  
Victoria Radeva ◽  
Albena Nikiforova ◽  
Miglena Veneva
Keyword(s):  
Life Cycle ◽  
Web Site ◽  
The Internet ◽  
A Company ◽  
The Web ◽  
Design Construction ◽  
Made In ◽  
Site Types

This report is dedicated to the role of the web site as an important tool for presenting business on the Internet. Classification of site types has been made in terms of their application in the business and the types of structures in their construction. The Models of the Life Cycle for designing business websites are analyzed and are outlined their strengths and weaknesses. The stages in the design, construction, commissioning, and maintenance of a business website are distinguished and the activities and requirements of each stage are specified.

Aboutness

2014 ◽  
Author(s):  
Stephen Yablo
Keyword(s):  
Subject Matter ◽  
Philosophy Of Language ◽  
Mental States ◽  
Library Science ◽  
Philosophical Methodology ◽  
Major Advance ◽  
Truth Conditions ◽  
Ways Of Being ◽  
Made In

Aboutness has been studied from any number of angles. Brentano made it the defining feature of the mental. Phenomenologists try to pin down the aboutness features of particular mental states. Materialists sometimes claim to have grounded aboutness in natural regularities. Attempts have even been made, in library science and information theory, to operationalize the notion. However, it has played no real role in philosophical semantics, which is surprising. This is the first book to examine through a philosophical lens the role of subject matter in meaning. A long-standing tradition sees meaning as truth conditions, to be specified by listing the scenarios in which a sentence is true. Nothing is said about the principle of selection—about what in a scenario gets it onto the list. Subject matter is the missing link here. A sentence is true because of how matters stand where its subject matter is concerned. This book maintains that this is not just a feature of subject matter, but its essence. One indicates what a sentence is about by mapping out logical space according to its changing ways of being true or false. The notion of content that results—directed content—is brought to bear on a range of philosophical topics, including ontology, verisimilitude, knowledge, loose talk, assertive content, and philosophical methodology. The book represents a major advance in semantics and the philosophy of language.

The Role of the Endothelium in Premature Atherosclerosis: Molecular Mechanisms

2020 ◽  
Vol 27 (7) ◽  
pp. 1041-1051 ◽  
Author(s):  
Michael Spartalis ◽  
Eleftherios Spartalis ◽  
Antonios Athanasiou ◽  
Stavroula A. Paschou ◽  
Christos Kontogiannis ◽  
...  
Keyword(s):  
Molecular Mechanisms ◽  
Low Density Lipoprotein ◽  
Critical Role ◽  
Density Lipoprotein ◽  
Number Of Genes ◽  
Causes Of Mortality ◽  
Artery Disease ◽  
Genetic And Environmental Factors ◽  
Made In

Atherosclerotic disease is still one of the leading causes of mortality. Atherosclerosis is a complex progressive and systematic artery disease that involves the intima of the large and middle artery vessels. The inflammation has a key role in the pathophysiological process of the disease and the infiltration of the intima from monocytes, macrophages and T-lymphocytes combined with endothelial dysfunction and accumulated oxidized low-density lipoprotein (LDL) are the main findings of atherogenesis. The development of atherosclerosis involves multiple genetic and environmental factors. Although a large number of genes, genetic polymorphisms, and susceptible loci have been identified in chromosomal regions associated with atherosclerosis, it is the epigenetic process that regulates the chromosomal organization and genetic expression that plays a critical role in the pathogenesis of atherosclerosis. Despite the positive progress made in understanding the pathogenesis of atherosclerosis, the knowledge about the disease remains scarce.

Conclusions

2018 ◽  
Author(s):  
Amy Strecker
Keyword(s):  
International Law ◽  
Eu Law ◽  
World Heritage Convention ◽  
State Practice ◽  
The World ◽  
State Obligations ◽  
Made In ◽  
Landscape Protection

The final chapter of this book advances four main conclusions on the role of international law in landscape protection. These relate to state obligations regarding landscape protection, the influence of the World Heritage Convention and the European Landscape Convention, the substantive and procedural nature of landscape rights, and the role of EU law. It is argued that, although state practice is lagging behind the normative developments made in the field of international landscape protection, landscape has contributed positively to the corpus of international cultural heritage law and indeed has emerged as a nascent field of international law in its own right.

scholarly journals Simultaneity and Precise Time in Rotation

Universe ◽  
2019 ◽  
Vol 5 (12) ◽  
pp. 226 ◽  
Author(s):  
Don Koks
Keyword(s):  
Time Coordinate ◽  
Near Future ◽  
Precise Time ◽  
Made In

I analyse the role of simultaneity in relativistic rotation by building incrementally on its role in simpler scenarios. Historically, rotation has been analysed in 1 + 1 dimensions; but my stance is that a 2 + 1 -dimensional treatment is necessary. This treatment requires a discussion of what constitutes a frame, how coordinate choices differ from frame choices, and how poor coordinates can be misleading. I determine how precisely we are able to define a meaningful time coordinate on a gravity-free rotating Earth, and discuss complications due to gravity on our real Earth. I end with a critique of several statements made in relativistic precision-timing literature, that I maintain contradict the tenets of relativity. Those statements tend to be made in the context of satellite-based navigation; but they are independent of that technology, and hence are not validated by its success. I suggest that if relativistic precision-timing adheres to such analyses, our civilian timing is likely to suffer in the near future as clocks become ever more precise.

Rescuing Migrants in the Central Mediterranean: The Emergence of a New Civil Humanitarianism at the Maritime Border

2019 ◽  
Vol 64 (4) ◽  
pp. 436-455
Author(s):  
Marta Esperti
Keyword(s):  
Civil Society ◽  
Research Methodology ◽  
Search And Rescue ◽  
International Organization ◽  
Central Mediterranean ◽  
The Social ◽  
Social Meanings ◽  
Humanitarian Space ◽  
First Arrival

The Central Mediterranean is the most deadly body of water in the Mediterranean Sea with at least 15,062 fatalities recorded by International Organization of Migration between 2014 and 2018. This article aims at highlighting the rise of a variety of new civil society actors engaged in the rescue of people undertaking dangerous journeys across the sea in the attempt of reaching the southern European shores. The peculiarity of the humanitarian space at sea and its political relevance are pointed out to illustrate the unfolding of the maritime border management on the Central Mediterranean route and its relation with the activity of the civil society rescue vessels. The theoretical aspiration of the article is to question the role of a proactive civil humanitarianism at sea, discussing the emergence of different political and social meanings around humanitarianism at the EU’s southern maritime border. In recent years, the increasing presence of new citizens-based organizations at sea challenges the nexus between humanitarian and emergency approaches adopted to implement security-oriented policies. This essay draws on the findings of a broader comparative work on a variety of civil society actors engaged in the search and rescue operations on the maritime route between Libya and Europe, focusing in particular on Italy as country of first arrival. The fieldwork covers a period of time going between 2016 and 2018. The research methodology is built on a multisited ethnography, the conduct of semidirective and informal interviews with both state and nonstate actors, and the analysis of various reports unraveling the social and political tensions around rescue at sea on the Central Mediterranean route.

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