Search results for "Size"
showing 8 items of 2718 documents
Data from: New Trepostomate bryozoans from the upper Ordovician of Morocco and the temperature influence on zooid size
2015
New Upper Ordovician trepostomate bryozoans from the eastern Anti-Atlas of Morocco have been identified. They have been collected from the lower and intermediate units of the Khabt-el-Hajar Formation, late Katian in age, representing, respectively, bryozoan-pelmatozoan meadows with siliciclastic input, degraded by wave activity in a mid-ramp setting, and outer-ramp environments with marly substrates. Ten species of the genera Cyphotrypa, Calloporella, Diplotrypa, Parvohallopora, Dekayia, and Aostipora are described. Of them, three species are new: Cyphotrypa regularis Jiménez-Sánchez, Parvohallopora cystata Jiménez-Sánchez, and Aostipora elongata Jiménez-Sánchez. Univariate statistical anal…
Could the acid-base status of Antarctic sea urchins indicate a better-than-expected resilience to near-future ocean acidification?
2015
Increasing atmospheric carbon dioxide concentration alters the chemistry of the oceans towards more acidic conditions. Polar oceans are particularly affected due to their low temperature, low carbonate content and mixing patterns, for instance upwellings. Calcifying organisms are expected to be highly impacted by the decrease in the oceans' pH and carbonate ions concentration. In particular, sea urchins, members of the phylum Echinodermata, are hypothesized to be at risk due to their high-magnesium calcite skeleton. However, tolerance to ocean acidification in metazoans is first linked to acid-base regulation capacities of the extracellular fluids. No information on this is available to dat…
Can number and size of offspring increase simultaneously? – A central life-history trade-off reconsidered
2012
Background: To maximize their fitness, parents are assumed to allocate their resources optimally between number and size of offspring. Although this fundamental life-history trade-off has been subject to long standing interest, its genetic basis, especially in wild mammals, still remains unresolved. One important reason for this problem is that a large multigenerational pedigree is required to conduct a reliable analysis of this trade-off. Results: We used the REML-animal model to estimate genetic parameters for litter size and individual birth size for a common Palearctic small mammal, the bank vole (Myodes glareolus). Even though a phenotypic trade-off between offspring number and size wa…
An Information Systems Design Product Theory for Software Project Estimation and Measurement Systems
2009
There is relatively little research on software Project Estimation and Measurement Systems (PEMS). Commercial PEMS vary in functionality and effectiveness. Their intended users thus do not know what to expect from PEMS and how to evaluate them. This paper creates an information system design product theory for the class of PEMS that prescribes the meta-requirements, the meta-design, and applicable theories for all products within the class. Meta-requirements and the meta-design are derived from the project estimation and measurement literature, experiences obtained during more than ten years of empirical work in Finnish Software Measurement Association, and a commercially available PEMS.
Struttura di popolazione di Haliotis tuberculata in aree soggette a diversi livelli di protezione
2006
This study aims at evaluating the current status of H. tuberculata stocks in exploited areas of western Sicily. The density of the green ormer was slightly greater in unexploited areas although differences between harvested and not harvested areas was not statistically significant. Moreover, analyses showed that length frequencies varied between harvested and not harvested areas.
Island selection on mammalian life-histories: genetic differentiation in offspring size
2008
BACKGROUND: Since Darwin's pioneering work, evolutionary changes in isolated island populations of vertebrates have continued to provide the strongest evidence for the theory of natural selection. Besides macro-evolutionary changes, micro-evolutionary changes and the relative importance of natural selection vs. genetic drift are under intense investigation. Our study focuses on the genetic differentiation in morphological and life-history traits in insular populations of a small mammal the bank vole Myodes glareolus. RESULTS: Our results do not support the earlier findings for larger adult size or lower reproductive effort in insular populations of small mammals. However, the individuals li…
Internationalization pathways of family SMEs: psychic distance as a focal point
2010
Purpose – The purpose of this paper is to investigate how psychic distance affects the internationalization process, foreign market entry (FME), and entry mode choice of Finnish small and medium-sized family enterprises (family SMEs) operating in France. Design/methodology/approach – The paper reports findings from an in-depth case study covering four Finnish manufacturing family SMEs operating in the French market. The data were analyzed using the Uppsala model and distance creating and distance-bridging factors encountered in the FME to France. Findings – The findings reveal that the family SMEs mainly followed a sequential process and favored indirect entry modes before entering the Fren…
M4_Microfluidics_for_CNT
2018
Size and frequency of the droplets produced in T-junction as a function of continuous and disperse phase pressure ratio.