scholarly journals Horizontal Distribution of Deep Sea Microplankton: A New Point of View for Marine Biogeography

Water ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1263
Author(s):  
Jessica Vannini ◽  
Lidia Yebra ◽  
Antonia Granata ◽  
Letterio Guglielmo ◽  
Salvatore Moscatello ◽  
...  
Keyword(s):  
Cluster Analysis ◽  
Spatial Distribution ◽  
Deep Sea ◽  
Adriatic Sea ◽  
Geographic Area ◽  
Horizontal Distribution ◽  
Point Of View ◽  
Marine Biogeography ◽  
Abiotic Parameters ◽  
Micro Organisms

An investigation on microplankton composition and spatial distribution has been carried out around Italian seas. The analysis of 53 samples, collected in 2017 at two depths in 27 different stations, has led to a scenario of horizontal distribution of microplankton. Dinophyta and Ciliophora were chosen as representatives of the whole microplankton community. A total of 60 genera were identified. Cluster analysis of data regarding taxa presence and abundance led us to recognize that similarities between surface stations were more evident than those between deep ones. Furthermore, we conducted an inter-annual comparison with available data from the South Adriatic Sea (2013, 2015). The higher dissimilarity between deep sea samples was also confirmed in a relatively smaller geographic area. The dissimilarity of deep-sea samples does not correspond to a higher habitat diversification, in terms of abiotic parameters. It has been suggested that the negligible biological connectivity in the deep, for those micro-organisms not able to perform wide spatial migrations, could produce such a biological diversification.

COMPROMISE AND ORIGINAL ACQUISITION: EXPLAINING RIGHTS TO THE ARCTIC

2015 ◽  
Vol 32 (1) ◽  
pp. 149-170 ◽  
Author(s):  
Cara Nine
Keyword(s):  
Political Philosophy ◽  
Natural Resources ◽  
Deep Sea ◽  
Large Degree ◽  
Geographic Area ◽  
Ocean Floor ◽  
The Arctic ◽  
Human Settlement ◽  
The Commons ◽  
Original Acquisition

Abstract:Up until now, political philosophy has explained the acquisition of natural resources, in one way or another, through the terms of human settlement. An agent acquires natural resources by moving into the geographic area that contains these resources. Even how we make claims to the ocean floor depends on settlement — claimants must be adjacent to settled land. This essay extends original acquisition theories so that they can respond to cases that do not presuppose any conditions of human settlement. I suggest that resource rights in the deep sea may be created, alternatively, through acts of compromise. Compromise can alleviate conflict, allowing for claimants to move beyond stalemate to acquire goods. It also allows for a large degree of flexibility in the specification of rights, and thereby can explain nontraditional rights over areas of migration. The tricky part of a theory that grants rights through agreement is explaining why external parties, those not part of the agreement, have a duty to respect those rights. A compromise under certain conditions, I argue, places all persons under a duty to respect the rights created by the compromise. Thus, when two parties compromise, they may acquire goods from the commons — creating a duty for all others to respect the parties’ rights over these goods. Importantly, rights created through compromise are constrained by a set of concerns for those excluded.

scholarly journals Trailing back from quasi decentralisation to centralisation. Municipal reform in Hungary

2020 ◽  
Vol 14 ◽  
pp. 117-137
Author(s):  
László Kákai
Keyword(s):  
Spatial Distribution ◽  
Public Administration ◽  
Service Provision ◽  
Point Of View ◽  
Direct Impact ◽  
Municipal Reform ◽  
Distribution Of Power ◽  
State Organization ◽  
Centralization And Decentralization

Trailing back from quasi decentralisation to centralisation. Municipal reform in Hungary It is very difficult to group countries and state structures according to the extent of their decentralization or the model they follow in the spatial distribution of power. The bounds of responsibility of local government and the state, the distribution of the roles and tasks between the two stakeholders and the question of centralization and decentralization are issues regularly debated in recent years and today. This topic is not merely a public administration, financial or state organization issue since these decisions have a direct impact on citizens’ lives through public services. In my study I wish to introduce this process via Hungary’s example. I also examine how and what those concerned by the financial and political changes, i.e. the population perceived of this most important structural transformation of the period since the transition in 1989. Can it be verified from the consumers’ point of view that the transformation of the local municipal system improves the quality of service provision?

scholarly journals Spatial distribution and cluster analysis of sexual risk behaviors reported by young men in Kisumu, Kenya

2010 ◽  
Vol 9 (1) ◽  
pp. 24 ◽  
Author(s):  
Nelli Westercamp ◽  
Stephen Moses ◽  
Kawango Agot ◽  
Jeckoniah O Ndinya-Achola ◽  
Corette Parker ◽  
...  
Keyword(s):  
Cluster Analysis ◽  
Spatial Distribution ◽  
Sexual Risk ◽  
Risk Behaviors ◽  
Sexual Risk Behaviors ◽  
Young Men ◽  
And Cluster Analysis

scholarly journals How spatial heterogeneity shapes multiscale biochemical reaction network dynamics

2015 ◽  
Vol 12 (104) ◽  
pp. 20141106 ◽  
Author(s):  
Peter Pfaffelhuber ◽  
Lea Popovic
Keyword(s):  
Spatial Distribution ◽  
Spatial Heterogeneity ◽  
Reaction Network ◽  
Stochastic Averaging ◽  
Multiscale Model ◽  
Point Of View ◽  
Rigorous Results ◽  
Biochemical Reaction Network ◽  
Molecular Movement ◽  
Heterogeneous Multiscale

Spatial heterogeneity in cells can be modelled using distinct compartments connected by molecular movement between them. In addition to movement, changes in the amount of molecules are due to biochemical reactions within compartments, often such that some molecular types fluctuate on a slower timescale than others. It is natural to ask the following questions: how sensitive is the dynamics of molecular types to their own spatial distribution, and how sensitive are they to the distribution of others? What conditions lead to effective homogeneity in biochemical dynamics despite heterogeneity in molecular distribution? What kind of spatial distribution is optimal from the point of view of some downstream product? Within a spatially heterogeneous multiscale model, we consider two notions of dynamical homogeneity (full homogeneity and homogeneity for the fast subsystem), and consider their implications under different timescales for the motility of molecules between compartments. We derive rigorous results for their dynamics and long-term behaviour, and illustrate them with examples of a shared pathway, Michaelis–Menten enzymatic kinetics and autoregulating feedbacks. Using stochastic averaging of fast fluctuations to their quasi-steady-state distribution, we obtain simple analytic results that significantly reduce the complexity and expedite simulation of stochastic compartment models of chemical reactions.

Modeling of spatial distribution of passenger traffi c on interurban bus routes

Innotrans ◽  
2020 ◽  
pp. 31-36
Author(s):  
Alexander V. Martynenko ◽  
◽  
Alexander A. Shevtsov ◽  
Keyword(s):  
Spatial Distribution ◽  
Quantitative Description ◽  
Point Of View ◽  
Practical Point ◽  
Ticket Price ◽  
Passenger Traffic ◽  
Correlation And Regression Analysis ◽  
Classical Gravity ◽  
Bus Service

This paper is devoted to the quantitative description of the spatial distribution of passenger traffic based on the classical gravity model on the example of interurban bus service between Yekaterinburg and other cities of the Sverdlovsk region. The influence of factors such as population, distance between localities, and ticket price on the volume of passenger traffic was studied. As a result of the correlation and regression analysis, it was found that both the distance between localities and the ticket price can be used as a measure of the remoteness of localities. However, the quality of the resulting regression model does not change. The spatial distribution of interurban bus passenger traffic depends on the measure of distance of localities from each other and the size of their population. Moreover, the size of the population is a much more significant factor than the measure of distance. From a practical point of view, this means that when predicting passenger traffic, demographic factors must first be taken into account.

The Use of E-Questionnaires in Organizational Surveys

2013 ◽  
pp. 1-23
Author(s):  
Yael Brender-Ilan ◽  
Gideon Vinitzky
Keyword(s):  
Principal Component Analysis ◽  
Cluster Analysis ◽  
Human Resource ◽  
Principal Component ◽  
Point Of View ◽  
Future Research ◽  
Advantages And Disadvantages ◽  
Organizational Surveys ◽  
Exploratory Survey ◽  
Hr Managers

In recent years, there has been an increase in academic studies that examine the advantages and disadvantages of using e-questionnaires in organizations, but these studies have tended to ignore the potential differences between human resource (HR) managers and HR consultants with regards to using this tool. This chapter examines the use of e-questionnaires from the point of view of both types of practitioners. The study includes a qualitative exploratory survey, as well as a quantitative survey. T-tests, cluster analysis, and principal component analysis are performed and results support the three propositions that are presented. Specifically, it was found that (a) HR consultants and HR managers differ in the ranking of factors they think are important when deciding whether to use e-questionnaires; (b) preference differences exist between HR managers and HR consultants - managers are more directed by organizational constraints than consultants; and (c) the groupings for e-questionnaire preferences, compared to paper-and-pencil questionnaires, are consistent with Caldwell’s (2003) four roles of HR managers. The chapter concludes with implications and suggestions for future research.

Sign in / Sign up

Export Citation Format

Share Document