322 research outputs found
Data and photos of pugnose pipefish <i>Bryx dunckeri.</i>
No full textData and photos accompanying the paper: Occurrence of juvenile pugnose pipefish Bryx dunckeri in the Sargasso Sea. Authored by Josefin Sundin, Marko Freese, Lasse Marohn, Tina Blancke, Reinhold Hanel.</p
ERP software system comparison between Odoo and Microsoft Dynamics NAV
No full textThe purpose of the thesis was to compare the two ERP software systems Odoo and Microsoft Dynamics NAV. The thesis sought to find out if Odoo can replace the existing Microsoft Dynamics core functionalities.
The commissioner is Lasse Seppänen, a principal lecturer at HAMK (Häme University of Applied Sciences) in Finland. The university currently uses Microsoft Dynamics NAV to teach students about business information systems.
The thesis explores the Microsoft Dynamics NAV system’s current features and asks how Odoo meets these requirements. The objective is also to determine which ERP system serves the university best.
First, the thesis explains central concepts related to ERP systems. In order to compare the two ERP systems evaluation criteria investigated through literary research. The thesis proceeds by discussing the current ERP requirements. Based on this data Odoo and Microsoft Dynamics were analyzed.
The research compares the two ERP solutions. The outcome of the analysis shows that Odoo is an alternative in comparison to Microsoft Dynamics NAV. The author recommends that the university implement Odoo through the Odoo Education platform
Migratory behaviour and habitat choice of the European eel (Anguilla anguilla). Microchemical otolith analyses provide an insight into the environmental history of an endangered species
No full textMikrochemische Analysen an Otolithen von Ostseefischen: Möglichkeiten und Grenzen von Otolithen-Elementanalysen zur Beschreibung individuellen Wanderverhaltens und Bestandsstrukturen von Fischen in der Ostsee
No full textIn this thesis otolith microchemistry analyses were used to gain insights into the individual life history and stock characteristics of three fish species from the Baltic Sea - the European eel Anguilla anguilla, the Atlantic cod Gadus morhua and the thicklip grey mullet Chelon labrosus. The special hydrographic environment of the world’s largest brackish water system provides promising conditions for the use of otolith elemental analysis to investigate individual migration patterns and stock structures of fish. Here, it was used to gain information with relevance for stock management of fish species that differ widely in their biology, ecology and stock structure. It was investigated whether individual continental migratory history affects health and spawner quality of the European eel. Otolith strontium (Sr) composition was used to identify characteristic migration patterns. Results show that the muscle fat contents of silver eels with strictly catadromous life cycles are significantly reduced compared to silver eels that never entered freshwaters. Furthermore, prevalence and infection intensities of the swimbladder nematode Anguillicoloides crassus are highly increased in catadromous silver eels. Both, a reduced accumulation of fat reserves and intense A. crassus infestations are assumed to impair the successful reproduction of A. anguilla. These results highlight the importance of brackish water habitats for the production of high quality spawners and question the benefit of restocking measures into inland waters. In order to investigate the influence of water temperature and feeding behaviour on the element incorporation into A. anguilla otoliths, two experimental studies were conducted. Results showed that otolith element incorporation is influenced by water temperature, but detected differences between treatments were low to allow an in situ reconstruction of temperature history. In the food experiment no effect on otolith microchemistry was detected between feeding groups. Results indicate that neither temperature changes nor individual dietary behaviour impair the use of otolith Sr concentrations as a tracer of diadromy. Thus the reliability of such migration studies is fundamentally increased. It was further investigated whether multi-element otolith analysis can be used to discriminate Atlantic cod individuals according to their origin. Otolith multi-element concentrations from adult individuals caught at spawning grounds in the North Sea, the western Baltic Sea and the eastern Baltic Sea were analysed. Furthermore, the multi-element composition of the core region of juvenile cod otoliths from western and eastern Baltic areas was examined. Multivariate statistical analyses successfully discriminated between adults from different stocks as well as between western and eastern Baltic Sea juveniles. Significant differences between the eastern Baltic spawning grounds, however, were not detected. These results demonstrate the potential of otolith microchemistry analysis to investigate the structure and connectivity of G. morhua stocks in the Baltic Sea. In a further field study the migratory behaviour of thicklip grey mullet was examined for the first time on individuals caught in the Baltic Sea. By detecting C. labrosus otolith Sr concentrations, this study aimed to gain first insights into preferences and whereabouts of individuals in the Baltic Sea. Results confirmed a preference of brackish habitats for all analysed specimens and suggest a high plasticity of C. labrosus migratory behaviour. The results support the assumption that a considerable fraction of individuals entering the western Baltic Sea regularly migrate to the North Sea. The results presented in this thesis confirm the feasibility of otolith microchemistry analyses for the investigation of a broad range of questions on Baltic Sea fish. Knowledge about investigated species was expanded and opportunities for future studies were indicated.In dieser Arbeit wurden anhand mikrochemischer Otolithenanalysen Erkenntnisse über die individuelle Lebensweise und die Bestandsstruktur von drei Fischarten aus der Ostsee gewonnen – dem Europäischen Aal Anguilla anguilla, dem Atlantischen Kabeljau Gadus morhua und der Dicklippigen Meeräsche Chelon labrosus. Die hydrographischen Besonderheiten der Ostsee als weltgrößtes Brackwassersystem bieten vielversprechende Voraussetzungen für die Anwendung von Otolithen-Elementanalysen zur Untersuchung des individuellen Wanderverhaltens von Fischen und deren Bestandsstrukturen. Hier wurden sie genutzt, um managementrelevante Fragestellungen von Fischarten zu untersuchen, die sich hinsichtlich ihrer Biologie, Ökologie und Bestandsstruktur sehr unterscheiden. Es wurde untersucht, ob das kontinentale Wanderverhalten Europäischer Aale deren Gesundheit und Laicherqualität beeinflusst. Dazu wurden anhand der Otolithen-Strontiumverteilung charakteristische Wandermuster ermittelt. Die Ergebnisse zeigen, dass der Muskelfettgehalt von Blankaalen mit strikt katadromen Wanderverhalten signifikant geringer ist als der von Blankaalen, die niemals ins Süßwasser eingewandert sind. Darüber hinaus sind Prävalenz und Befallsintensität mit dem Schwimmblasen-Nematoden Anguillicoloides crassus bei katadromen Blankaalen stark erhöht. Sowohl eine verringerte Einlagerung von Fettreserven als auch der intensive Befall mit A. crassus stehen im Verdacht, den Reproduktionserfolg von A. anguilla zu vermindern. Die vorliegenden Ergebnisse heben die Bedeutung von Brackwasserhabitaten für die Produktion von gesunden Laichtieren hervor und stellen den Nutzen von Besatzmaßnahmen in Binnengewässer in Frage. Um den Einfluss von Wassertemperatur und Futterverhalten auf die Elementeinlagerung in A. anguilla-Otolithen zu prüfen, wurden zwei experimentelle Studien durchgeführt. Die Ergebnisse zeigen, dass die Einlagerung von Elementen in die Otolithen zwar von der Wassertemperatur beeinflusst wird. Die Unterschiede zwischen den Futtergruppen waren aber so gering, dass eine Rekonstruktion erlebter Temperaturänderungen in situ schwierig erscheint. Im Futterexperiment konnte kein Effekt auf die Elementeinlagerung detektiert werden Die Ergebnisse zeigen, dass weder Temperaturschwankungen noch unterschiedliches Futterverhalten die Verwendung von Sr zur Rekonstruktion diadromen Verhaltens einschränken. Damit wird die Aussagekraft solcher Migrationsstudien deutlich erhöht. Des Weiteren wurde untersucht, ob Otolithen-Multielementanalysen dazu geeignet sind, G. morhua-Individuen ihrer Herkunft zuzuordnen. Dazu wurde die Multielementzusammensetzung von Otolithen adulter Dorsch von Laichplätzen aus der Nordsee, der westlichen und der östlichen Ostsee untersucht. Des Weiteren wurde die Zusammensetzung der Kernbereiche von Otolithen juveniler Dorsche aus der westlichen und der östlichen Ostsee analysiert. Multivariate statistische Analysen konnten sowohl die adulten Bestände erfolgreich trennen, als auch die Juvenilen aus der westlichen und der östlichen Ostsee unterscheiden. Signifikante Unterschiede zwischen den drei östlichen Laichgebieten konnten aber nicht detektiert werden. Die Ergebnisse zeigen das Potential von Otolithen-Multielementanalysen zur Untersuchung der Struktur und Konnektivität von G. morhua-Beständen. In einer weiteren Feldstudie wurde das Wanderverhalten der Dicklippigen Meeräsche C. labrosus erstmals an Individuen aus der Ostsee untersucht. Ziel der Studie war es, mittels der Analyse von Sr-Konzentrationen in C. labrosus-Otolithen grundsätzliche Informationen über Aufenthaltsorte und Habitatspräferenzen der Ostsee-Meeräschen zu erlangen. Die Ergebnisse bestätigen die Präferenz von Brackwasserhabitaten und lassen eine hohe Plastizität des Wanderverhaltens vermuten. Sie stützen die Vermutung, dass ein erheblicher Teil der in die Ostsee einwanderenden Individuen regelmäßig in die Nordsee zurückkehrt. Die Ergebnisse dieser Arbeit bestätigen die gute Eignung mikrochemischer Otolithenanalysen zur Untersuchung unterschiedlichster Fragestellungen an Fischarten aus der Ostsee. Das Wissen über die untersuchten Arten wurde erweitert und neue Wege für zukünftige Studien wurden aufgezeigt
Microchemical analyses of otoliths in Baltic Sea fish - Possibilities and limitations of otolith elemental analysis to describe individual life history and stock characteristics of fish in the Baltic Sea
No full textIn this thesis otolith microchemistry analyses were used to gain insights into the individual life history and stock characteristics of three fish species from the Baltic Sea - the European eel Anguilla anguilla, the Atlantic cod Gadus morhua and the thicklip grey mullet Chelon labrosus. The special hydrographic environment of the world’s largest brackish water system provides promising conditions for the use of otolith elemental analysis to investigate individual migration patterns and stock structures of fish. Here, it was used to gain information with relevance for stock management of fish species that differ widely in their biology, ecology and stock structure. It was investigated whether individual continental migratory history affects health and spawner quality of the European eel. Otolith strontium (Sr) composition was used to identify characteristic migration patterns. Results show that the muscle fat contents of silver eels with strictly catadromous life cycles are significantly reduced compared to silver eels that never entered freshwaters. Furthermore, prevalence and infection intensities of the swimbladder nematode Anguillicoloides crassus are highly increased in catadromous silver eels. Both, a reduced accumulation of fat reserves and intense A. crassus infestations are assumed to impair the successful reproduction of A. anguilla. These results highlight the importance of brackish water habitats for the production of high quality spawners and question the benefit of restocking measures into inland waters. In order to investigate the influence of water temperature and feeding behaviour on the element incorporation into A. anguilla otoliths, two experimental studies were conducted. Results showed that otolith element incorporation is influenced by water temperature, but detected differences between treatments were low to allow an in situ reconstruction of temperature history. In the food experiment no effect on otolith microchemistry was detected between feeding groups. Results indicate that neither temperature changes nor individual dietary behaviour impair the use of otolith Sr concentrations as a tracer of diadromy. Thus the reliability of such migration studies is fundamentally increased. It was further investigated whether multi-element otolith analysis can be used to discriminate Atlantic cod individuals according to their origin. Otolith multi-element concentrations from adult individuals caught at spawning grounds in the North Sea, the western Baltic Sea and the eastern Baltic Sea were analysed. Furthermore, the multi-element composition of the core region of juvenile cod otoliths from western and eastern Baltic areas was examined. Multivariate statistical analyses successfully discriminated between adults from different stocks as well as between western and eastern Baltic Sea juveniles. Significant differences between the eastern Baltic spawning grounds, however, were not detected. These results demonstrate the potential of otolith microchemistry analysis to investigate the structure and connectivity of G. morhua stocks in the Baltic Sea. In a further field study the migratory behaviour of thicklip grey mullet was examined for the first time on individuals caught in the Baltic Sea. By detecting C. labrosus otolith Sr concentrations, this study aimed to gain first insights into preferences and whereabouts of individuals in the Baltic Sea. Results confirmed a preference of brackish habitats for all analysed specimens and suggest a high plasticity of C. labrosus migratory behaviour. The results support the assumption that a considerable fraction of individuals entering the western Baltic Sea regularly migrate to the North Sea. The results presented in this thesis confirm the feasibility of otolith microchemistry analyses for the investigation of a broad range of questions on Baltic Sea fish. Knowledge about investigated species was expanded and opportunities for future studies were indicated
Differentielle Genexpressionsanalyse nach PCB-Belastung beim Europäischen Aal (Anguilla anguilla)
No full textThe stock size of the European Eel (Anguilla anguilla) has decreased for decades, and this development has assumed alarming propotiions. Considered reasons for this decline are high fishing pressure, the loss of accessible habitats, the global climate change and, particularly, the bad health conditions of spawners. Due to the widespread infections with the swimbladder nematode Anguillicola crassus and several viruses (e .g. EVEX, Herpesvirus anguillae) and the contamination from various pollutants, many spawners seem to be unable to reproduce successfully. The dioxin-like polychlorinated Biphenyls (PCBs) are considered to be particularly harmful to the success of reproduction, because of their reproduction and embryo toxicity. The identification of unpolluted habitats, in which healthy spawners could develop, would be of great importance to restore the eel stock in Europe. Such habitats could produce spawners with big spawning capacities, which could strengthen the stock with the help of profitable reproduction. lt is necessary to gain a comprehensive knowledge of coplanar PCB levels in eels of European waters in order to identify such habitats. However, due to the difficult analysis of coplanar PCBs, this knowledge is still fragmentary. The analysis of differential gene expression could provide a relatively uncomplex alternative method and facilitates large-scale PCB monitoring. This study investigated if PCB levels of the European eel could be detected by using the inductive potencies of coplanar PCBs on the cytochrome P4501A-system (CYPlA). Therefore, the transcription activity of the cytochrome P450 lA 1-gene (CYP lA 1) was determined at different PCB levels by using a RT-PCR. Furthermore, it was tested if the coplanar PCBs had an influence on the transcription of a glyceraldehyde-3-phosphatedehydrogenase gene (GAPDH). This was carried out in order to examine if it could be used as a reference gene to standardise quantitative and semiquantitative expression analyses in PCB contaminated eels. After the intraperitoneal injection of a single <lose of different amounts of 3,3 ',4,4' -tetrachlorobyphenyl (PCB No. 77) into young eels (14 - 22 cm), the expression activities of both genes were determined in liver and gills. This study showed that the CYPlAl-expression is induced in liver and gills of the European eel by the intraperitoneal injection of PCB No. 77. The expression in gills was dose dependent, which is a basic requirement for quantitative gene expression analyses. Consequently, according to this study, the use of differential gene expression analyses for PCB-monitoring is possible. The GAPDH expression was affected by the PCB-injection, as well. High PCB concentration led to an elevated GAPDH transcription in the liver, but not in the gills. This study suggests that GAPDH shouldn't be used as a reference gene in quantitative gene expression analyses after high PCB exposures, because it is not expressed independently of high PCB concentrations
Fictionality and Literature: Core Concepts Revisited
No full textAuthor / Henrik Zetterberg-Nielsen -- Narrator / Sylvie Patron -- Plot / Wendy Veronica Xin -- Character / H. Porter Abbott -- Consciousness / Maria Mäkelä -- Metaphor / Greta Olson -- Paratext / Louise Brix Jacobsen -- Intertextuality / Rikke Andersen Kraglund -- Metafiction and metalepsis / Richard Walsh -- The novel / Catherine Gallagher and Simona Zetterberg-Nielsen -- Poetry / Lasse R. Gammelgaard -- Literary nonfiction / James Phelan -- Ethics / Jakob Lothe -- Social justice / Susan S. Lanser.Item embargoed for five year
The Rating Game: Sentiment Rating Reproducibility from Text
No full textSentiment analysis models often use rat-ings as labels, assuming that these rat-ings reflect the sentiment of the accom-panying text. We investigate (i) whether human readers can infer ratings from re-view text, (ii) how human performance compares to a regression model, and (iii) whether model performance is affected by the rating “source ” (i.e. original author vs. annotator). We collect IMDb movie reviews with author-provided ratings, and have them re-annotated by crowdsourced and trained annotators. Annotators re-produce the original ratings better than a model, but are still far off in more than 5 % of the cases. Models trained on annotator-labels outperform those trained on author-labels, questioning the useful-ness of author-rated reviews as training data for sentiment analysis.
Optimal high-dimensional and nonparametric distributed testing under communication constraints
No full textWe derive minimax testing errors in a distributed framework where the data is
split over multiple machines and their communication to a central machine is
limited to bits. We investigate both the - and infinite-dimensional
signal detection problem under Gaussian white noise. We also derive distributed
testing algorithms reaching the theoretical lower bounds.
Our results show that distributed testing is subject to fundamentally
different phenomena that are not observed in distributed estimation. Among our
findings, we show that testing protocols that have access to shared randomness
can perform strictly better in some regimes than those that do not. We also
observe that consistent nonparametric distributed testing is always possible,
even with as little as -bit of communication and the corresponding test
outperforms the best local test using only the information available at a
single local machine. Furthermore, we also derive adaptive nonparametric
distributed testing strategies and the corresponding theoretical lower bounds.Comment: 53 page
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