19 resultados para global problems

em Doria (National Library of Finland DSpace Services) - National Library of Finland, Finland


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The markets of biomass for energy are developing rapidly and becoming more international. A remarkable increase in the use of biomass for energy needs parallel and positive development in several areas, and there will be plenty of challenges to overcome. The main objective of the study was to clarify the alternative future scenarios for the international biomass market until the year 2020, and based on the scenario process, to identify underlying steps needed towards the vital working and sustainable biomass market for energy purposes. Two scenario processes were conducted for this study. The first was carried out with a group of Finnish experts and thesecond involved an international group. A heuristic, semi-structured approach, including the use of preliminary questionnaires as well as manual and computerised group support systems (GSS), was applied in the scenario processes.The scenario processes reinforced the picture of the future of international biomass and bioenergy markets as a complex and multi-layer subject. The scenarios estimated that the biomass market will develop and grow rapidly as well as diversify in the future. The results of the scenario process also opened up new discussion and provided new information and collective views of experts for the purposes of policy makers. An overall view resulting from this scenario analysis are the enormous opportunities relating to the utilisation of biomass as a resource for global energy use in the coming decades. The scenario analysis shows the key issues in the field: global economic growth including the growing need for energy, environmental forces in the global evolution, possibilities of technological development to solve global problems, capabilities of the international community to find solutions for global issues and the complex interdependencies of all these driving forces. The results of the scenario processes provide a starting point for further research analysing the technological and commercial aspects related the scenarios and foreseeing the scales and directions of biomass streams.

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A hybrid electric vehicle is a fast-growing concept in the field of vehicle industry. Nowadays two global problems make manufactures to develop such systems. These problems are: the growing cost of a fuel and environmental pollution. Also development of controlled electric drive with high control accuracy and reliability allows improving of vehicle drive characteristics. The objective of this Diploma Thesis is to investigate the possibilities of electrical drive application for new principle of parallel hybrid vehicle system. Electric motor calculations, selection of most suitable control system and other calculations are needed. This work is not final work for such topic. Further investigation with more precise calculations, modeling, measurements and cost calculations are needed to answer the question if such system is efficient.

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Sustainability, in its modern meaning, has been discussed for more than forty years. However, many experts believe that humanity is still far from being sustainable. Some experts have argued that humanity should seek survivable development because it is too late for sustainable one, since 1990s. Obviously, some problems prevented humanity from becoming sustainable. This thesis focuses on the agenda of sustainability discussions and seeks for the essential topics missing from it. For this purpose, the research is conducted on 21 out of 33 books endorsed by the Club of Rome. All of these books are titled ‘a report to the Club of Rome’. The Club of Rome is an organization that has been constantly working on the problems of humankind for the past 40 years. This thesis has three main components: first, the messages of the reports to the Club of Rome, second, academics perceptions of the Club, and third, the Club member perceptions of its evolution, messages and missing topics. This thesis investigates the evolution of four aspects in the reports. The first one is the agenda of the reports. The second one is the basic approaches of the Club (i.e., global, long-term and holistic). The third one is the ways that the reports treat free market and growth ideology. The fourth one is the approach of the reports toward components of the global complex system (i.e., society, economy and politics). The outline of the thesis is as follows. First, the original reports are briefly summarized. After this, the academic perceptions are discussed and structured around three concepts (i.e., futures studies, sustainability and degrowth). In the final step, the perceptions of the experts are collected and analysed, using a variation of Delphi method, called ‘in-depth interviews’, and ‘quality content analysis’ method. This thesis is useful for those interested in sustainability, global problems, and the Club of Rome. This thesis concludes that the reports from 1972 up to 1980 were cohesive in discussing topics related to the problems of humankind. The topics of the reports are fragmented after this period. The basic approaches of CoR are visible in all the reports. However, after 1980, those approaches and especially holistic thinking are only visible in the background. Regarding the free market and growth ideology, although all the reports are against them, the early reports were more explicitly expressing their disagreement. A milestone is noticeable around 1980 when such objections went completely to the background. However, recent reports are more similar to those of 1970s both in adopting a holistic approach and in explicitly criticizing free market and growth ideology. Finally, concerning the components of global complex system, the society is excluded and the focus of the reports is on politics, economy and their relation. Concerning the topics missing from the debate, this thesis concludes that no major research has been conducted on the fundamental and underlying reasons of the problems (e.g. beliefs, values and culture). Studying the problems without considering their underlying reasons, obviously, leads to superficial and ineffective solutions. This might be one of the reasons that sustainability discussions have as yet led to no concrete result.

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Concentrated solar power (CSP) is a renewable energy technology, which could contribute to overcoming global problems related to pollution emissions and increasing energy demand. CSP utilizes solar irradiation, which is a variable source of energy. In order to utilize CSP technology in energy production and reliably operate a solar field including thermal energy storage system, dynamic simulation tools are needed in order to study the dynamics of the solar field, to optimize production and develop control systems. The object of this Master’s Thesis is to compare different concentrated solar power technologies and configure a dynamic solar field model of one selected CSP field design in the dynamic simulation program Apros, owned by VTT and Fortum. The configured model is based on German Novatec Solar’s linear Fresnel reflector design. Solar collector components including dimensions and performance calculation were developed, as well as a simple solar field control system. The preliminary simulation results of two simulation cases under clear sky conditions were good; the desired and stable superheated steam conditions were maintained in both cases, while, as expected, the amount of steam produced was reduced in the case having lower irradiation conditions. As a result of the model development process, it can be concluded, that the configured model is working successfully and that Apros is a very capable and flexible tool for configuring new solar field models and control systems and simulating solar field dynamic behaviour.

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Tämän työn tavoitteena on tutkia born global -yhtiön resursseja ¿ erityisesti perustajan näkökulmasta - ja kuinka he ovat selviytyneet rajoitettujen resurssien ongelmasta yritystä perustettaessa. Born global - yritykset ovat nuoria, tietointensiivisiä ja nopeasti kansainvälistyviä pieniä ja keskisuuria yrityksiä. Niiden resurssit ovat usein vajavaisia ja ristiriidassa niiden maailmanlaajuisen vision kanssa. Myös born global - yrityksen piirteet ja strategia asettavat paineita yhtiön resursseille. Tämän tutkimuksen empirinen osa perustuu tapaustutkimukselle, jossa analysoidaan kahden born global -tapauksen resursseja ja yrittäjiä. Born global -tutkijat ovat pyrkineet löytämään syytä viime aikaiselle born global -yrityksien lisääntymiselle ja hahmottamaan born global -yrityksen resursseja ja born global -yrittäjien ominaisuuksia. Tutkimuksesta käy ilmi, että born global -ilmiön kasvanutta määrää ei voida selittää yhdellä tai kahdella muuttujalla. Mutta kuitenkin eräitä kriittisiä tekijöitä löytyi case-organisaatioista, jotka ovat laskeneet rimaa perustaa born global -yritys. Erityisesti ulkomaankokemus, kielitaito ja käytännölliset verkostot nähtiin tärkeiksi molemmissacase-organisaatioissa. Kävi myös ilmi, että molemmat perustaja-yrittäjät olivat vahvasti motivoituneita. Kuitenkin motivaation lähde vaihteli perustajien kesken ollen kuitenkin vahvasti yhteydessä omaan persoonaan. Mitään kattavampaa johtopäätöstä ei kyetty tekemään, joten jatkotutkimus tämän alueenosalta on tarvittavaa. Tulokset näyttävät siltä, että born global -yrityksen perustajat omaavat tärkeän roolin yhtiön suorituskykyyn liittyen. Erityisesti erintyyppisten verkostojen rooli nähtiin elintärkeänä born global-yrityksen menestykselle ¿ verkostot nähtiin keinona haalia kriittisiä resursseja. Tulokset tukevat teoriaa born global -yrityksen resursseista.

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Diplomityö tehtiin Partek Oyj Abp:lle antamaan IT-järjestelmistä vastuussa oleville ja niihin tukeutuville johtohenkilöille yleisnäkemys IT-sovellusintegroinnista sekä luomaan ohjeet integrointi projekteihin. Diplomityön alkuosassa esitellään liiketoiminnan prosessien pulmakohtia ja sovellusintegrointien liiketoiminnalle tuomia etuja yleisellä tasolla perustuen kirjallisuuteen. Yleisen tason etuja saadaan mm. nopeampien prosessien, paremman tiedon saatavuuden ja ihmisille tulevien uusien toimintatapojen kautta tulevista eduista. Työn seuraavassa osiossa esitellään mitä sovellusintegraatio tarkoittaa käytännössä, mitä erilaisia vaihtoehtoja integroinneille on ja mitä etuja ja haittoja erilaisista integrointitavoista on. Integrointitavoista viesti-pohjainen integrointitapa on noussut suosituimmaksi sen yksinkertaisuuden, luotettavuuden ja helpon liitettävyyden takia. Integrointisovelluksilla on mahdollista siirtää, muokata, prosessoida ja varastoida viestejä. Näiden ominaisuuksien avulla on mahdollista luoda reaaliaikaisia yhteistyöverkostoja. Tämä osio perustuu kirjallisuuteen , artikkeleihin ja haastatteluihin. Kolmas osio keskittyy integrointi projektin ominaispiirteisiin luoden toimintakartan integrointiprojektin kululle. Osiossa esitellään huomioitavat tekniset asiat, kustannukset ja edut sekä mallipohjia integroinnin dokumentointiin. Osio perustuu omiin kokemuksiin, haastatteluihin sekä kirjallisuuteen. Neljännessä osiossa esitellään Partekissa tehty integrointiprojekti. Integrointityö tehtiin ostajille tarkoitetun toimittajarekisterin (PPM) ja ERP-järjestelmän (Baan) välillä. Integrointiin käytettiin yhtä suosituinta integrointityökalua nimeltään IBM WebSphere MQ.Osio perustuu projektin dokumentointiin, omiin kokemuksiin ja kirjallisuuteen. Diplomityön päättää yhteenveto. Kolme pääetua voidaan saavuttaa integroinneilla ja toimintakartalla; tiedon luotettavuus paranee, toimintakartalla saadaan integroinneille malli ja luodaan riippumattomuutta tiettyihin avain henkilöihin tarkalla dokumentoinnilla ja toimintatapojen standardoinnilla.

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Käyttäjien tunnistaminen tietojärjestelmissä on ollut yksi tietoturvan kulmakivistä vuosikymmenten ajan. Ajatus käyttäjätunnuksesta ja salasanasta on kaikkein kustannustehokkain ja käytetyin tapa säilyttää luottamus tietojärjestelmän ja käyttäjien välillä. Tietojärjestelmien käyttöönoton alkuaikoina, jolloin yrityksissä oli vain muutamia tietojärjestelmiä ja niitä käyttivät vain pieni ryhmä käyttäjiä, tämä toimintamalli osoittautui toimivaksi. Vuosien mittaan järjestelmien määrä kasvoi ja sen mukana kasvoi salasanojen määrä ja monimuotoisuus. Kukaan ei osannut ennustaa, kuinka paljon salasanoihin liittyviä ongelmia käyttäjät kohtaisivat ja kuinka paljon ne tulisivat ruuhkauttamaan yritysten käyttäjätukea ja minkälaisia tietoturvariskejä salasanat tulisivat aiheuttamaan suurissa yrityksissä. Tässä diplomityössä tarkastelemme salasanojen aiheuttamia ongelmia suuressa, globaalissa yrityksessä. Ongelmia tarkastellaan neljästä eri näkökulmasta; ihmiset, teknologia, tietoturva ja liiketoiminta. Ongelmat osoitetaan esittelemällä tulokset yrityksen työntekijöille tehdystä kyselystä, joka toteutettiin osana tätä diplomityötä. Ratkaisu näihin ongelmiin esitellään keskitetyn salasanojenhallintajärjestelmän muodossa. Järjestelmän eri ominaisuuksia arvioidaan ja kokeilu -tyyppinen toteutus rakennetaan osoittamaan tällaisen järjestelmän toiminnallisuus.

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Lyhytsanomiin perustuvat lisäarvopalvelut ovat viime vuosikymmenen lopulla kehittyneet nopeasti parhaimmin tuottaviksi mobiilin televerkon käyttötavoista. Nämä palvelut on monesti kehitetty nopeasti ottamatta huomioon mahdollisia siirrettävyysongelmia, joita palveluiden vieminen muihin kuin alkuperäiseen ympäristöön aiheuttaa. Tämän työn tarkoituksena on tutkia odotettavissa olevia teknisiä ongelmia vietäessä lyhytsanomapohjaisia palveluita kansainvälisille markkinoille. Ongelman ratkaisuna esitellään Intellitel Messaging Gateway (MGw) - yhdyskäytävä, joka tarjoaa mahdollisuuden avointen internet-protokollien kautta tarjottavaan lisäarvopalveluiden luontiin. Työn käytännön osuus koostuu valikoimasta pieniä suunnittelu- ja toteutustehtäviä, joiden tarkoituksena on korjata kansainvälistä verkkoonvientiä estäviä ominaisuuksia ja puutteita Intellitel MGw:ssä. Näistä ominaisuuksista tärkeimmät ovat merkistö-, osoitteistus- ja protokollayhteensopivuuden asettamat rajoitukset.

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Many companies today struggle with problems they face around sales lead management. They are suffering from inconsistent quality of leads, they miss clear sales opportunities and even cannot handle well their internal marketing lists. Meanwhile customers are better and better equipped with means to easily initiate contact via internet, via call centers etc. Investing in lead generation activities that are built on a bad process is not a good idea. Better than asking how to get more leads, companies should ask how to get better quality leads and invest in improving lead management. This study looks sales lead management as a multi step process where a company generates leads in controlled environment, qualifies them and hands over to the sales cycle. As a final step, organization needs to analyze the incomes and successes of different lead sources. Most often in sales lead management a process improvement requires setting up additional controls to enable proper tracking of all leads. A sales lead management process model for the case company is built based on the findings. Implementing the new model involves changes and improvements in some key areas of current process. Starting from the very beginning, these include redefining a bit the lead definition and revising the criteria set for qualified lead. There are some improvements to be done in the system side to enable the proposed model. Lastly a setting for responsible roles is presented.

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The purpose of this Thesis was to study what is the present situation of Business Intelligence of the company unit. This means how efficiently unit uses possibilities of modern information management systems. The aim was to resolve how operative informa-tion management of unit’s tender process could be improved by modern information technology applications. This makes it possible that tender processes could be faster and more efficiency. At the beginning it was essential to acquaint oneself with written literature of Business Intelligence. Based on Business Intelligence theory is was relatively easy but challenging to search and discern how tender business could be improved by methods of Busi-ness Intelligence. The empirical phase of this study was executed as qualitative research method. This phase includes theme and natural interviews on the company. Problems and challenges of tender process were clarified in a part an empirical phase. Group of challenges were founded when studying information management of company unit. Based on theory and interviews, group of improvements were listed which company could possible do in the future when developing its operative processes.

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Metaheuristic methods have become increasingly popular approaches in solving global optimization problems. From a practical viewpoint, it is often desirable to perform multimodal optimization which, enables the search of more than one optimal solution to the task at hand. Population-based metaheuristic methods offer a natural basis for multimodal optimization. The topic has received increasing interest especially in the evolutionary computation community. Several niching approaches have been suggested to allow multimodal optimization using evolutionary algorithms. Most global optimization approaches, including metaheuristics, contain global and local search phases. The requirement to locate several optima sets additional requirements for the design of algorithms to be effective in both respects in the context of multimodal optimization. In this thesis, several different multimodal optimization algorithms are studied in regard to how their implementation in the global and local search phases affect their performance in different problems. The study concentrates especially on variations of the Differential Evolution algorithm and their capabilities in multimodal optimization. To separate the global and local search search phases, three multimodal optimization algorithms are proposed, two of which hybridize the Differential Evolution with a local search method. As the theoretical background behind the operation of metaheuristics is not generally thoroughly understood, the research relies heavily on experimental studies in finding out the properties of different approaches. To achieve reliable experimental information, the experimental environment must be carefully chosen to contain appropriate and adequately varying problems. The available selection of multimodal test problems is, however, rather limited, and no general framework exists. As a part of this thesis, such a framework for generating tunable test functions for evaluating different methods of multimodal optimization experimentally is provided and used for testing the algorithms. The results demonstrate that an efficient local phase is essential for creating efficient multimodal optimization algorithms. Adding a suitable global phase has the potential to boost the performance significantly, but the weak local phase may invalidate the advantages gained from the global phase.

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Japan has been a major actor in the field of development cooperation for five decades, even holding the title of largest donor of Official Development Assistance (ODA) during the 1990s. Financial flows, however, are subject to pre-existing paradigms that dictate both donor and recipient behaviour. In this respect Japan has been left wanting for more recognition. The dominance of the so called ‘Washington Consensus’ embodied in the International Monetary Fund (IMF) and the World Bank has long circumvented any indigenous approaches to development problems. The Tokyo International Conference on African Development (TICAD) is a development cooperation conference that Japan has hosted since 1993 every five years. As the main organizer of the conference Japan has opted for the leading position of African development. This has come in the wake of success in the Asian region where Japan has called attention to its role in the so called ‘Asian Miracle’ of fast growing economies. These aspirations have enabled Japan to try asserting itself as a major player in directing the course of global development discourse using historical narratives from both Asia and Africa. Over the years TICAD has evolved into a continuous process with ministerial and follow-up meetings in between conferences. Each conference has produced a declaration that stipulates the way the participants approach the question of African development. Although a multilateral framework, Japan has over the years made its presence more and more felt within the process. This research examines the way Japan approaches the paradigms of international development cooperation and tries to direct them in the context of the TICAD process. Supplementing these questions are inquiries concerning Japan’s foreign policy aspirations. The research shows that Japan has utilized the conference platform to contest other development actors and especially the dominant forces of the IMF and the World Bank in development discourse debate. Japan’s dominance of the process is evident in the narratives found in the conference documents. Relative success has come about by remaining consistent as shown by the acceptance of items from the TICAD agenda in other forums, such as the G8. But the emergence of new players such as China has changed the playing field, as they are engaging other developing countries from a more equal level.