Search results for "Opel"

Performance analysis of photovoltaic powered dc motor — Propeller system

2015

The application of autonomous directly photovoltaic (PV) powered electro-mechanical has received increasing attention for different applications (e.g. PV water pumping, PV powered cooling of arid climate greenhouses, solar vehicles etc). The PV array output is a nonlinear and time-dependent power supply that varies with solar intensity and cell temperature, so the performance characteristics of the directly PV-powered DC motor — propeller system are very different than when powered by a constant DC voltage. The focus of this work is to do performance analysis of directly PV-powered DC motor — propeller system. Through performance evaluation, it has been observed that power transfer matching…

Verkkopelin pelaaminen ja pelaajien vuorovaikutus

2014

Tämän tutkielman tavoitteena oli tutkia ja analysoida verkkopelin pelaamista ja siihen liittyvää vuorovaikutusta. Tavoitteena oli selvittää, miten ja miksi lapset pelaavat verkkopeliä ja millaista vuorovaikutusta pelaamiseen liittyy. Lisäksi haluttiin selvittää, miten lapsille suunnattua verkkopeliä voitaisiin kehittää. Tutkimus toteutettiin laadullisin menetelmin. Aineisto kerättiin haastattelemalla ja havainnoimalla verkkopelin pelaajia yksilö-, pari- ja ryhmätilanteissa. Tutkimukseen osallistui yhdeksän 7–12-vuotiasta lasta. Tutkimustilanteissa lapset pelasivat verkkopeliä ja samalla heitä haastateltiin pelaamisesta. Tutkimustilanteissa pelattiin Ylen tuottamaa Boforia…

Going in Homer: The Role of Verb-Inherent Actionality Within Self-Propelled Motion-Event Encoding

2019

The paper aims at investigating the encoding of self-propelled motion events in Homeric Greek in the light of the typology of motion events, taking into account the case of to go. The verbal class of the self-propelled motion refers to those verbs expressing the idea of a simple translational motion, such as to go, to move, without any information about the manner of motion (see, by contrast, the class of the manner-of-motion verbs, such as to run, to swim) or about the path of motion (see, by contrast, the class of the path verbs, such as to enter, to exit). According to Talmy (2000), world languages can be distinguished depending on whether they prototypically express the semantic compone…

Syöpää, sotaa ja masennusta

2018

Multiverse Ethnography: A Qualitative Method for Gaming and Technology Use Research

2021

This article introduces multiverse ethnography as a systematic team-based qualitative method for studying the mechanical, structural and experiential properties of video games and other technological artefacts. Instead of applying the ethnographic method to produce a single in-depth account, multiverse ethnography includes multiple researchers carrying out coordinated synergetic ethnographic work on the same research object, thus producing a multiverse of interpretations and perspectives. To test the method, 41 scholars carried out a multiverse ethnography on two video games, Cyberpunk 2077 and Among Us. Explorative thematic findings regarding both titles are reported and methodological imp…

The role of lantern fish (Myctophidae) in the life-cycle of cetacean parasites from western Mediterranean waters

2015

Myctophids (lantern fish) and cephalopods play a key role in trophic webs from the continental slope and oceanic waters linking the zooplankton to top predators. Many cetaceans feed on both lantern fish and cephalopods, and such prey would thus be expected to bridge the trophic gap in the life-cycles of helminths infecting cetaceans. However, information on the life-cycles of most of these helminths is extremely scanty. We examined the parasite fauna of myctophids and cephalopods in two areas from the western Mediterranean where at least 21 helminth taxa from cetaceans have been reported and both cetacean diversity and abundance is high. A total of 1012 individuals of 8 lantern fish species…

Bioogles un sapropeļa izmantošanas iespējas augsnes substrāta izveidē

2017

Bakalaura darba “Bioogles un sapropeļa izmantošanas iespējas augsnes substrāta izveidē” teorētiskajā daļā, tika veikta zinātniskās literatūras analīze par augsnes aktuālajām problēmām un iespējamajiem risinājumiem. Tika apkopota zinātniskā informācija par bioogli un sapropeli, kā arī to īpašībām. Darba gaitā tika izgatavotas augsnes substrāta granulas no bioogles un Piksteres ezera sapropeļa. Izejmateriāliem noteikts ķīmiskais sastāvs, pelnu saturs, ūdens izvilkuma pH un elektrovadītspēja. Izveidotajām granulām noteikti ķīmiskie un fiziskie parametri (ķīmiskais sastāvs, mehāniskā izturība, blīvums u.c.) Bioogles suspensijā audzējot sīpolus, tika noteikta bioogles ietekme uz augu attīstību. …

Two Overwatch Player Profiles

2022

AbstractWe pursue Overwatch player profiles via a statistical cluster analysis of survey data from the UK (N = 1089) and the USA (N = 417). The profiles are based on the players’ activity, challenge, and experiential preferences as well as motivations. Our analytical process produces six esports player clusters, two of which with Overwatch. The first (OW1) plays mainly Overwatch and Fortnite on a console, and they enjoy diverse types of non-competitive play elements more than other esports players. The second cluster (OW2) plays mainly Overwatch and League of Legends on a PC, and despite appearing more “competitive”, they did not report more competitive preferences. We suggest that the alle…

Accumulation of metals and changes in composition of freshwater lake organic sediments during the Holocene

2020

Abstract The distribution of metals in the strata of sediments deposited in the freshwater environment formed during the Holocene in the territory of Latvia has been studied rather insufficiently. Considering the large volume of accumulated organic matter in sediments, studies on the content of metallic elements in sediments can help to determine the peculiarities of the metal accumulation process in limnic systems and the biogeochemical cycling of metals. Lake Pilvelis, which is located in the eastern part of Latvia (the northern part of Europe), was selected as the main study site. Lake Pilvelis is a small lake of a glacial origin, and >90% of its depression is filled with organic-rich se…

EXTRACTION OF BIOLOGICALLY ACTIVE COMPONENTS FROM FRESHWATER SAPROPEL

2019

Sapropel has been used for different purposes - in agriculture as fertilizer, in construction as building material, in cosmetic products, in balneology also in medicine and pharmaceuticals as bioactive component. Previously sapropel has been commonly used in raw form and there is no general accepted method or standard method for obtaining sapropel extract. However, most extraction methods follow the same path. Currently, there are few extraction methods using several extractants for obtaining bioactive components from raw sapropel. The most commonly used extractant is alkaline solution. When sapropel is subjected to alkaline environment, the humic and fulvic acids, together with some lipids…