Search results for "siirto"
showing 10 items of 251 documents
Optimal Usage of Multiple Network Connections
2008
In the future mobile networks, a mobile terminal is able to select the best suitable network for each data transmission. The selection of a network connection to be used has been under a lot of study. In this paper, we consider a more extensive case in which we do not select a network connection but use several network connections simultaneously to transfer data. When data is transferred using multiple network connections, a network connection has to be selected for each component of the data. We have modelled this problem as a multiobjective optimization problem and developed a heuristic to solve the problem fast in a static network environment. In this paper, we discuss solving the proble…
The making of rallienglanti : cross-linguistic influence in Finnish speakers' pronunciation of English
2016
Kielten välistä siirtovaikutusta, eli transferia on tutkittu melko paljon, mutta suomen ja englannin kielten suhde, varsinkin fonetiikan osalta, on jäänyt melko vähälle huomiolle. Tämän tutkielman tarkoituksena oli selvittää erilaisia tapoja, joilla suomalaisten englanninääntämys voi erota ns. malliääntämyksestä, sekä selvittää, miten suomen kielen foneettinen järjestelmä vaikuttaa näihin eroihin. Kvalitatiiviseen tapaustutkimukseen valittiin erilaisia englannin kielen ääntämysjärjestelmän osa-alueita, kuten konsonanttiäänteitä, sekä prosodisia seikkoja, kuten painotus ja intonaatio. Tavoitteena oli löytää kattavasti erilaisia esimerkkejä tutkimuksen osallistujien puhenäytteistä ja kuvailla…
The DMT of Real and Quaternionic Lattice Codes and DMT Classification of Division Algebra Codes
2021
In this paper we consider the diversity-multiplexing gain tradeoff (DMT) of so-called minimum delay asymmetric space-time codes. Such codes are less than full dimensional lattices in their natural ambient space. Apart from the multiple input single output (MISO) channel there exist very few methods to analyze the DMT of such codes. Further, apart from the MISO case, no DMT optimal asymmetric codes are known. We first discuss previous criteria used to analyze the DMT of space-time codes and comment on why these methods fail when applied to asymmetric codes. We then consider two special classes of asymmetric codes where the code-words are restricted to either real or quaternion matrices. We p…
Reputation-Based Blockchain for Spatial Crowdsourcing in Vehicular Networks
2022
The sharing of high-quality traffic information plays a crucial role in enhancing the driving experience and safety performance for vehicular networks, especially in the development of electric vehicles (EVs). The crowdsourcing-based real-time navigation of charging piles is characterized by low delay and high accuracy. However, due to the lack of an effective incentive mechanism and the resource-consuming bottleneck of sharing real-time road conditions, methods to recruit or motivate more EVs to provide high-quality information gathering has attracted considerable interest. In this paper, we first introduce a blockchain platform, where EVs act as the blockchain nodes, and a reputation-base…
Äärellisten Borel-mittojen Fourier-muunnoksista euklidisissa avaruuksissa
2016
Tutkielmassa esitellään euklidisen avaruuden äärellisille Borel-mitoille Fourier-muunnokset kompleksiarvoisina kuvauksina ja tutkitaan niiden vähenemistä mentäessä ääarettömän kauas origosta. Keskeisenä kysymyksenä on, millä reunaehdoilla annetun kompkatikantajaisen ja äärellisen Borel-mitan Fourier muunnos vähenee polynomiaalisesti (eli sitä voidaan dominoida jollain euklidisen normin negatiivisella potenssilla) kaikkialla riittävän kaukana tai ainakin ”keskimääräisesti”. Mikäli tällainen Borel-mitta on absoluuttisesti jatkuva Lebesguen mitan suhteen kompaktikantajaisella ja sileällä tiheysfunktiolla, niin sen Fourier-muunnos vähenee aina polynomiaalisesti kaikkialla. Ongelmaa tarkastellaa…
IEEE Access Special Section Editorial : Cloud and Big Data-Based Next-Generation Cognitive Radio Networks
2019
In cognitive radio networks (CRN), secondary users (SUs) are required to detect the presence of the licensed users, known as primary users (PUs), and to find spectrum holes for opportunistic spectrum access without causing harmful interference to PUs. However, due to complicated data processing, non-real-time information exchange and limited memory, SUs often suffer from imperfect sensing and unreliable spectrum access. Cloud computing can solve this problem by allowing the data to be stored and processed in a shared environment. Furthermore, the information from a massive number of SUs allows for more comprehensive information exchanges to assist the resource allocation and interference ma…
Energy Efficient Scheduling in Content Distribution Collaborative Mobile Clusters
2020
Most of the existing literatures on green communications aimed to improve the energy efficiency at the base station or data server. However, in order to fully experience high rate broadband multimedia services, prolonging the battery life of user equipment is also critical for the mobile terminals, especially for the smartphone users. In this work, we investigate the problem of designing a content distribution mobile platform named collaborative mobile clusters (CMC) via user cooperation to reduce the energy consumption at the terminal side. Specifically, given numbers of users interested in downloading a common content from the operator, both centralized and distributed user grouping and s…
Sopeutumisen satoa : hiitolalaissiirtoväen maanviljelys ja karjanhoito sodanjälkeisessä Ulvilassa
2002
Fuel for commercial politics: the nucleus of early commercial proliferation of atomic energy in three acts
2020
Historical research into the nuclear industry has focussed upon military and commercial aspects of the technology whilst ignoring fuel. This article discusses nuclear fuel, the resource at the centre of the industry and the role superpower politics played in its supply. Starting with the context of superpower competition, we examine the spread of nuclear technology from its beginnings in post-war Britain via West Germany in the 1950s to Finland in the 1960s and 1970s. We demonstrate that each country had varied interests affecting the choice of nuclear fuel for early energy projects; British fuel choices were constrained by its weapons programme and Germany needed legitimacy in the face of …
An immigrant mother’s thoughts on the use of Finnish in English workbooks
2018
I moved to Finland with my family three and a half years ago from Hungary. My older son (aged 11 then) spent a year in a Finnish preparatory class before he continued his studies in the 5th grade. He chose English as his A1 language because he had learnt it for three years in a Hungarian school. Despite his knowledge, the English home assignments proved to be very difficult for him to solve. The activity book relied greatly on the majority language: the instructions and many of the exercises required Finnish knowledge. We spent a lot of time using an electronic dictionary to do the English homework together. Finnish skills were needed even in the English language tests that he had to take, …