Énfasis en los eslóganes publicitarios de radio y televisión

El objetivo de este trabajo es determinar las características básicas de la entonación de los eslóganes publicitarios tanto de radio como de televisión. Con este propósito se analizan los valores de la Fº de las vocales que aparecen en el fragmento que corresponde al eslogan. Para evitar en la medida de lo posible las diferencias que pueden venir determinadas por el soporte físico en el que aparecen los eslóganes publicitarios, se escogió el mismo producto, diferentes marcas de vehículos, y se seleccionaron aquellos enunciados óptimos para un posterior análisis de la señal. Para la segmentación de los eslóganes dentro de los enunciados publicitarios y el análisis de las curvas melódicas se utilizó el programa PRAAT. Para cada enunciado se han ido anotando los valores de la F0 de cada vocal, teniendo en cuenta las tres partes de cada unidad melódica: el anacrusis, el cuerpo y la inflexión final. Para minimizar las variaciones debidas al tono de voz característico de cada locutor, se ha procedido a una estandarización de los valores frecuenciales. Los resultados obtenidos muestran que todos los eslóganes analizados presentan énfasis, que a veces afecta a una parte del contorno (anacrusis, cuerpo e inflexión final), a veces a más de una y otras, incluso a todo el contorno. Aunque en radio y televisión se suelen presentar características prosódicas similares, existen características propias del medio de comunicación que se utiliza.

Calculation of radio electrical coverage in Medium-Wave Frequencies

The aim of this project is to accomplish an application software based on Matlab to calculate the radioelectrical coverage by surface wave of broadcast radiostations in the band of Medium Wave (WM) all around the world. Also, given the location of a transmitting and a receiving station, the software should be able to calculate the electric field that the receiver should receive at that specific site. In case of several transmitters, the program should search for the existence of Inter-Symbol Interference, and calculate the field strenght accordingly. The application should ask for the configuration parameters of the transmitter radiostation within a Graphical User Interface (GUI), and bring back the resulting coverage above a map of the area under study. For the development of this project, it has been used several conductivity databases of different countries, and a high-resolution elevation database (GLOBE). Also, to calculate the field strenght due to groundwave propagation, it has been used ITU GRWAVE program, which must be integrated into a Matlab interface to be used by the application developed.

Review of Robust Cooperative Spectrum Sensing Techniques for Cognitive Radio Networks

Cognitive radio networks sense spectrum occupancy and manage themselvesto operate in unused bands without disturbing licensed users. The detection capability of aradio system can be enhanced if the sensing process is performed jointly by a group of nodesso that the effects of wireless fading and shadowing can be minimized. However, taking acollaborative approach poses new security threats to the system as nodes can report falsesensing data to reach a wrong decision. This paper makes a review of secure cooperativespectrum sensing in cognitive radio networks. The main objective of these protocols is toprovide an accurate resolution about the availability of some spectrum channels, ensuring thecontribution from incapable users as well as malicious ones is discarded. Issues, advantagesand disadvantages of such protocols are investigated and summarized.

Consistency and change in Finnish broadcasting policy : the implementation of digital television and lessons from the Canadian experience

Konsistens och förändring i finländsk etermediapolitik. Implementering av digital television och en jämförelse med Kanada Avhandlingen handlar om hur det finländska televisionssystemet förändrades i slutet av 1990-talet från en nationell institution till ett dualistiskt system som präglas av stark marknadsorientering. Syftet med avhandlingen är att förstå på vilket sätt en så snabb förändring kunde ske och analysera de institutionella faktorerna bakom utvecklingen. På teoretisk nivå diskuteras tesen om det nära sambandet mellan statliga politiska institutioner och rundradioverksamhetens institutioner. Avhandlingen består av två fallstudier. Den första sätter fokus på de första åren av den finländska televisionens digitaliseringsprocess som startade med starka industriell-nationalistiska motiveringar. Analysen, som baserar på offentliga dokument, sträcker sig framtill hösten 2001 då de digitala televisionssändningarna startade och regeringspropositionen om den nya kommunikationsmarknadslagen lämnades till riksdagen. Dessa policy-processer analyseras som en ”marknadisering” av de traditionella styrningsprinciper och idéer gällande finländsk rundradioverksamheten. En jämförelse mellan Finlands och Kanadas nationella rundradiopolitik gör att man kan koppla slutsatserna till den internationella utvecklingen. Jämförelsen visar hur kommunikationspolitiska linjen i de två länderna har kommit att likna varandra trots att ländernas tv-system och deras styrordningar är mycket olika. Exemplet med Kanada visar att den särskilda teknologin inte är viktig utan snarare de kommersiella intressen som står bakom och som beslutsfattare gärna döljer i en nationalistisk retorik. Studien visar att det är viktigt att beakta vilken tyngd man i politiken ger de två sidor som rundradioverksamheten består av: sändningsteknologin och verksamheten som en speciell kulturform. Nationalstatens handlingsutrymme minskar inom fältet om målet är att vara framgångsrik i konkurrensen i den nya internationella ekonomin. Enligt de nyliberalistiska principer som det politiska systemet överlag har tillägnat sig det är önskvärd men också helt inhemska institutionella traditioner och praxis som följdes i den finländska digitaliseringsprocessen främjade utvecklingen som ledde till att nästan alla ursprungliga nationella syften föll sönder.

Vatikaanin radio 80 vuotta

Vatikaanin radion 80-vuotisnäyttely Vatikaanin museossa.

Tunable lumped-element bandpass filters for Cognitive Radio application

In this thesis the design of bandpass filters tunable at 400 MHz – 800 MHz was under research. Microwave filters are vital components which provide frequency selectivity in wide variety of electronic systems operating at high frequencies. Due to the occurrence of multi-frequency bands communication and diverse applications of wireless devices, requirement of tunable filters exists. The one of potential implementation of frequency-agile filters is frontends and spectrum sensors in Cognitive Radio (CR). The principle of CR is to detect and operate at a particular available spectrum without interfering with the primary user’s signals. This new method allows improving the efficiency of utilizing allocated spectrum such as TV band (400 MHz – 800 MHz). The focus of this work is development of sufficiently compact, low cost tunable filters with quite narrow bandwidth using currently available lumped-element components and PCB board technology. Filter design, different topologies and methods of tuning of bandpass filters are considered in this work. As a result, three types of topologies of bandpass filter were simulated and realised. They use digitally tunable capacitors (DTCs) for adjusting central frequency at TV "white space" spectrum. Measurements revealed that schematics presented in this work have proper output response and filters are successfully tuned by DTCs.

KAVA:n radio- ja tv-arkisto : ohjelmavirtaa ja talletuksia tutkimuskäyttöön

Teemanumero 1/2012: Arkisto.

Weed control in corn via intercropping with gliricidia sown by broadcasting

There has been interest in reducing the use of herbicides for weed control in order to decrease environmental degradation problems. The objective of this study was to evaluate the effects of gliricidia planting density sown by broadcasting and intercopping on green ear and corn grain yield as well as on weed control. A randomized block design with split-plots and five replicates were adopted. Cultivars AG 1051, BM 2022, and BM 3061, assigned to plots, were submitted to the following treatments: no hoeing, two hoeings (at 20 and 40 days after sowing), and intercropped with gliricidia sown at densities of 10 and 20 seeds m-2. Thirty weed species occurred in the experiment area, with Cucumis anguria as the most frequent ones. Cultivar BM 2022 was the best for the total number of ears (TNE) and number (NMHE) and weight of marketable husked ears. Together with cultivar AG 1051, this cultivar had the highest total weight and marketable unhusked ear weight (MUEW). However, the cultivars did not differ with respect to grain yield (GY). The highest green ear and corn grain yield and weed control percentages were obtained with two hoeings; in MUEW, NMHE and GY, intercropping provided intermediate means in comparison with those obtained in hoed and non-hoed plots, indicating that gliricidia was partially beneficial to corn. Increased gliricidia seeding density heightened the benefits to corn (TNE and MUEW). The lack of hoeing produced the poorest green ear and grain yields.

Kognitiivinen radio sotilaallisessa käyttöympäristössä

Tutkielmassa arvioidaan kognitiivisen radion sotilaalliseen ympäristöön tuomia mahdollisuuksia. Radion kognitiivisuutta käsitellään kongitiivisten ominaisuuksien, kuten adaptiivisuuden tai tilannetietoisuuden, kautta. Painopisteenä on kognitiivisten ominaisuuksien tuomien vaikutusten tarkastelu operatiivisessa viitekehyksessä. Operatiivisia vaikutuksia tutkitaan uhkalähtöisesti eli arvioimalla, miten tietty kognitiivinen ominaisuus vaikuttaa yleisimpiin tiedonsiirtoverkon uhkiin. Tutkimus on kirjallisuustutkimus, jota on täydennetty asiantuntijahaastatteluin sekä -arvioin. Operatiiviset vaikutukset on tiivistetty taulukoimalla eri kognitiivisten ominaisuuksien ja yleisimpien tiedonsiirtojärjestelmien uhkat. Kognitiiviselle radiolle on useita erilaisia määritelmiä. Tutkielman perusteella ITU-R:n määritelmää voidaan pitää kattavana. Kaikkia kriteerejä täyttävää kognitiivista radiota ei ole vielä olemassa, vaikka kognitiivisia ominaisuuksia radioissa on ollut pitkään. Kognitiivinen radio, tai jo pelkästään ohjelmistoradio kehittyneillä kognitiivisilla ominaisuuksilla, tuo huomattavia mahdollisuuksia parantaa langattoman tiedonsiirron toimintakykyä sotilaallisessa käyttöympäristössä. Kognitiiviset ominaisuudet vaikuttavat merkittävästi niin viestitaktiikkaan kuin uhkaankin. Tiedonsiirtojärjestelmien ylläpito ja rakentaminen vaativat aiempaa enemmän suunnittelua ja ammattitaitoa, mutta toisaalta loppukäyttäjän osaamistasovaatimuksia voidaan laskea sitä mukaan, kun lähestytään 0- konfiguraatiojärjestelmiä. Radioiden kognitiivisuuden myötä voidaan myös passiivisiin uhkiin, esimerkiksi elektroniseen tiedusteluun, varautua aiempaa tehokkaammin. Aktiivisiin uhkiin, kuten häirintään, kognitiiviset ominaisuudet vaikuttavat jopa toiminnan fundamentteja muuttavasti: perinteiset häirintätehtävät voivat vaihtua esimerkiksi tiedustelua tukeviksi tehtäviksi. Kognitiivisia ominaisuuksia voi olla myös häirintäjärjestelmissä, mikä toisaalta tasapainottaa mutta toisaalta vaikeuttaa häirinnän vaikutuksen ennakointia ja arviointia. Tiedonsiirtojärjestelmien ohjelmistopohjaisuus nostaa kyberuhkan merkitystä arvioitaessa eri uhkien kokonaismerkityksiä. Onnistunut kyberoperaatio voi tarkoittaa koko järjestelmän lamautumista tai vakavaa tietovuotoa. Merkittävimpänä esteenä kognitiivisen radion kehittymiselle on taajuusregulaation jäykkyys. Paine taajuushallinnan muutokselle nousee erityisesti siviilipuolen kehittyvien mobiililaitteiden datansiirtomäärien kasvaessa. Lainsäädäntö antaa viranomaisille suuret valtuudet säädellä spektrin käyttöä poikkeusoloissa. Tämä mahdollistaa sotilaallisten järjestelmien suunnittelun ja kehittämisen taajuusriippumattomasti ja toisaalta myös edellyttää sitä.

The radio frequency identification technology in the supply chain management: a case of a big logistics company

Nowadays global business trends force the adoption of innovative ICTs into the supply chain management (SCM). Particularly, the RFID technology is on high demand among SCM professionals due to its business advantages such as improving of accuracy and veloc-ity of SCM processes which lead to decrease of operational costs. Nevertheless, a question of the RFID technology impact on the efficiency of warehouse processes in the SCM re-mains open. The goal of the present study is to experiment the possibility of improvement order picking velocity in a warehouse of a big logistics company with the use of the RFID technology. In order to achieve this goal the following objectives have been developed: 1) Defining the scope of the RFID technology applications in the SCM; 2) Justification of the RFID technology impact on the SCM processes; 3) Defining a place of the warehouse order picking process in the SCM; 4) Identification and systematization of existing meth-ods of order picking velocity improvement; 5) Choosing of the study object and gathering of the empirical data about number of orders, number of hours spent per each order line daily during 5 months; 6) Processing and analysis of the empirical data; 7) Conclusion about the impact of the RFID technology on the speed of order picking process. As a result of the research it has been found that the speed of the order picking processes has not been changed as time has gone after the RFID adoption. It has been concluded that in order to achieve a positive effect in the speed of order picking process with the use of the RFID technology it is necessary to simultaneously implement changes in logistics and organizational management in 3PL logistics companies. Practical recommendations have been forwarded to the management of the company for further investigation and procedure.

Pursuit of change versus organizational inertia: a study on strategic renewal in the Finnish broadcasting company

This doctoral dissertation explores the intra-organizational dynamics of a strategic renewal process. The main research question is how the pursuit of change and organizational inertia co-exist, intertwine, and collide in organizational cognition and capabilities during the strategic renewal. It is a comprehensive study on how organizational capabilities, organizational cognition, and structure enhance and inhibit change. Theoretically, the study is positioned in the modern tradition of strategy research, using the dynamic capability view and the organizational and managerial cognition research tradition as the main theoretical frames. Empirically, the study is a longitudinal case study of the Finnish Broadcasting Company (Yle), following the organizational changes during the years of 2011-1014. The analysis is based on both quantitative and qualitative data, which was collected during the research process using surveys, interviews, and archives. The main theoretical contribution is the application of the two theoretical approaches in one study. Empirically, the study contributes to operationalization of the concepts related to the dynamic capability view and organizational cognition, in a media context that is going through drastic changes due to digitalization. Furthermore, the case of a public broadcasting company extends the application of the theoretical concepts to the context of public management. The results suggest that renewal is a complex process, in which an organization’s perceptions intertwine with the strategic actions and decision-making. The change evolves pathdependently: the past experiences, routines, and organizational structures tend to dictate the future visions, desires, and actions. The study also reveals how the public nature of an organization adds to the tensions between change and organizational inertia, and hampers the decision-making. The doctoral dissertation consists of six research papers, each of which explores the phenomenon under study from a different perspective.

Radio-frequency-based measurement methods for bearing current analysis in induction motors

The most common reason for a low-voltage induction motor breakdown is a bearing failure. Along with the increasing popularity of modern frequency converters, bearing failures have become the most important motor fault type. Conditions in which bearing currents are likely to occur are generated as a side effect of fast du/dt switching transients. Once present, different types of bearing currents can accelerate the mechanical wear of bearings by causing deformation of metal parts in the bearing and degradation of the lubricating oil properties.The bearing current phenomena are well known, and several bearing current measurement and mitigation methods have been proposed. Nevertheless, in order to develop more feasible methods to measure and mitigate bearing currents, better knowledge of the phenomena is required. When mechanical wear is caused by bearing currents, the resulting aging impact has to be monitored and dealt with. Moreover, because of the stepwise aging mechanism, periodically executed condition monitoring measurements have been found ineffective. Thus, there is a need for feasible bearing current measurement methods that can be applied in parallel with the normal operation of series production drive systems. In order to reach the objectives of feasibility and applicability, nonintrusive measurement methods are preferred. In this doctoral dissertation, the characteristics and conditions of bearings that are related to the occurrence of different kinds of bearing currents are studied. Further, the study introduces some nonintrusive radio-frequency-signal-based approaches to detect and measure parameters that are associated with the accelerated bearing wear caused by bearing currents.

De radio aeternitatis seu honestate e suo fonte scilicet jure naturae, emanante

Variantti B.

De radio aeternitatis seu honestate e suo fonte scilicet jure naturae, emanante

Variantti A.