Search results for "Web"
showing 10 items of 2018 documents
Lowered nutritional quality of prey decrease the growth and biomolecule content of rainbow trout fry
2022
Diet quality is crucial for the development of offspring. Here, we examined how the nutritional quality of prey affects somatic growth and the lipid, carbohydrate, protein, amino acid, and polyunsaturated fatty acid content of rainbow trout (Oncorhynchus mykiss) fry using a three-trophic-level experimental setup. Diets differed especially in their content of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), which are physiologically essential polyunsaturated fatty acids for a fish fry. Trout were fed with an artificial diet (fish feed, DHA-rich), marine zooplankton diet (krill/Mysis, DHA-rich), or freshwater zooplankton diet (Daphnia, Cladocera, DHA-deficient). The Daphnia were gr…
Data from: The importance of phytoplankton biomolecule availability for secondary production
2018
The growth and reproduction of animals is affected by their access to resources. In aquatic ecosystems, the availability of essential biomolecules for filter-feeding zooplankton depends greatly on phytoplankton. Here, we analyzed the biochemical composition, i.e., the fatty acid, sterol and amino acid profiles and concentrations as well as protein, carbon, nitrogen, and phosphorus content of 17 phytoplankton monocultures representing the seven most abundant phytoplankton classes in boreal and sub-arctic lakes. To examine how the differences in the biochemical composition between phytoplankton classes affect their nutritional quality for consumers, we assessed the performance of Daphnia, on …
Eutrophication reduces the nutritional value of phytoplankton in boreal lakes
2019
Eutrophication (as an increase in total phosphorus [TP]) increases harmful algal blooms and reduces the proportion of high-quality phytoplankton in seston and the content of ω-3 long-chain polyunsaturated fatty acids (eicosapentaenoic acid [EPA] and docosahexaenoic acid [DHA]) in fish. However, it is not well-known how eutrophication affects the overall nutritional value of phytoplankton. Therefore, we studied the impact of eutrophication on the production (as concentration; μg L−1) and content (μg mg C−1) of amino acids, EPA, DHA, and sterols, i.e., the nutritional value of phytoplankton in 107 boreal lakes. The lakes were categorized in seven TP concentration categories ranging from ultra…
Haskellin käyttö web-palvelinohjelmoinnissa
2018
Funktio-ohjelmointia ei tavallisesti juurikaan käytetä web-kehityksessä. Tässä tutkielmassa selvitetään, olisiko Haskell-nimisestä funktio-ohjelmointikielestä kuitenkin hyötyä web-palvelinohjelmoinnissa. Tutkimuskysymyksenä on "Miten Haskellia voi hyödyntää web-palvelinohjelmoinnissa" ja tutkimusmenetelmänä on kirjallisuuskatsaus. Tuloksena saadaan, että Haskellilla ohjelmoitujen web-palvelinten etuja ovat erityisesti nopeus ja pieni koko. Functional programming isn't normally used much in web development. In this thesis we investigate whether Haskell, a functional programming language, could nonetheless be useful in web server programming. The research problem is ''How can Haskell be utili…
Nejaušdatu testēšana tīmekļa lietotņu saskarnēm
2021
Visaptveroša testēšana ir kritisks solis programmatūras kvalitātes nodrošināšanā. Tīmekļa lietotnēs, līdzās vienības testiem, tiek izmantoti automatizēti un manuāli sistēmas testi. Šo testu rakstīšana un izpilde prasa nozīmīgus resursus. Nejaušdatu testēšana(fuzz testing) piedāvā risinājumus automatizētai testpiemēru ģenerācijai, bet šo metožu pielietojums tīmekļa saskarņu testēšanā ir maz pētīts. Darbā tiek pētītas iespējas un grūtības nejaušdatu testēšanas metožu izmantošanā tīmekļa lietotņu nejaušdatu testēšanā. Ir piedāvātas pieejas un algoritmi nejaušināmas tīmekļa saskarnes reprezentācijas izgūšanai, testpiemēru ģenerācijai un rezultātu novērtēšanai. Tāpat tiek apspriesti šo metožu iz…
deaR-Shiny: An Interactive Web App for Data Envelopment Analysis
2021
In this paper, we describe an interactive web application (deaR-shiny) to measure efficiency and productivity using data envelopment analysis (DEA). deaR-shiny aims to fill the gap that currently exists in the availability of online DEA software offering practitioners and researchers free access to a very wide variety of DEA models (both conventional and fuzzy models). We illustrate how to use the web app by replicating the main results obtained by Carlucci, Cirà and Coccorese in 2018, who investigate the efficiency and economic sustainability of Italian regional airport by using two conventional DEA models, and the results given by Kao and Liu in their papers published in 2000 and 2003, wh…
Taming big knowledge evolution
2016
Information and its derived knowledge are not static. Instead, information is changing over time and our understanding of it evolves with our ability and willingness to consume the information. When compared to humans, current computer systems seem very limited in their ability to really understand the meaning of things. On the other hand, they are very powerful when it comes down to performing exact computations. One aspect which sets humans apart from machines when trying to understand the world is that we will often make mistakes, forget information, or choose what to focus on. To put this in another perspective, it seems like humans can behave somehow more randomly and still outperform …
Introduzione
2015
Il saggio, a carattere introduttivo, descrive come gli studi di genere abbiano attraversato trasversalmente i temi della sociologia, fino ad articolarne le categorie che oggi identificano le nuove tecnologie della comunicazione, nella auto ed etero costruzione del sé.
Il geodatabase dell'Herbarium Mediterraneum Panormitanum [PAL] per la mappatura di dati primari sulla biodiversità
2010
Controlling factors of phytoplankton assemblages in wetlands: an experimental approach
2003
The aim of this work is to answer some questions like: what factors control the phytoplankton assemblage? What factor or factors are perturbing the assemblage? What factors are driving or maintaining the stability? Are the different responses to the control factors dependent on the hierarchy level? For that, we tested experimentally the influence of herbivory, planktivory, nutrients and sediment on phytoplankton assemblages and its stability from a hypertrophic wetland (Las Tablas de Daimiel National Park, Spain) in three microcosm experiments. The study of the steady state phytoplankton assemblages in this perturbed system could point out some underlying processes instead of competition. T…