996 resultados para Gas companies.
Resumo:
Today cloud computing is the next stage in development information-oriented society in field of information technologies. Great attention is paid to cloud computing in general, but the lack of scientific consideration to components brings to the problem, that not all aspects are well examined. This thesis is an attempt to consider Platform as a Service (a technology of providing development environment through the Internet) from divergent angles. Technical characteristics, costs, time, estimation of effectiveness, risks, strategies that can be applied, migration process, advantages and disadvantages and the future of the approach are examined to get the overall picture of cloud platforms. During the work literature study was used to examine Platform as a Service, characteristics of existent cloud platforms were explored and a model of a typical software development company was developed to create a scenario of migration to cloud technologies. The research showed that besides all virtues in reducing costs and time, cloud platforms have some significant obstacles in adoption. Privacy, security and insufficient legislation impede the concept to be widespread.
Resumo:
The purpose of this study was to define the key challenges for Finnish companies in doing business in Russia. The study consists of a theoretical and an empirical part and is conducted as a quantitative study. The theoretical framework was build around capital structure, cost of capital and emerging market theories. The findings suggest that the firms in the sample seek growth mainly from emerging markets. These research results also indicate that challenges are visible in emerging market environment. Challenges that companies are facing in Russian market are mainly connected with legislation, communication and language problems. In addition, companies profitability has changed during the financial crisis, which has been the main reason for the negative changes in companies profitability. Even though the financial crisis has had a strong effect on the worldwide economy, the firms in the sample are not postponing their investments to Russia, because of lack of new financing or unfavorable credit terms.
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At the time of moving towards knowledge-based economy, countries pay much attention to innovations by making them a central issue in countries’ innovation policy development. Innovations are influenced much by the institutional environment, in which they are created. That is why exploration of National Innovation Systems, as an important part of such an environment, became central in works of different researchers all over the world.
Resumo:
This work is directed to the study and evaluation of gas diffusion electrodes as detectors in hydrogen sensors. Electrochemical experiments were carried out with rotating disk electrodes with a thin porous coating of the catalyst as a previous step to select useful parameters for the sensor. An experimental arrangement made in the laboratory that simulates the sensor was found appropriate to detect volumetric hydrogen percentages above 0.25% in mixtures H2:N2. The system shows a linear response for volumetric percentages of hydrogen between 0.25 and 2 %.
Resumo:
Segmentointi on perinteisesti ollut erityisesti kuluttajamarkkinoinnin työkalu, mutta siirtymä tuotteista palveluihin on lisännyt segmentointitarvetta myös teollisilla markkinoilla. Tämän tutkimuksen tavoite on löytää selkeästi toisistaan erottuvia asiakasryhmiä suomalaisen liikkeenjohdon konsultointiyritys Synocus Groupin tarjoaman case-materiaalin pohjalta. K-means-klusteroinnin avulla löydetään kolme potentiaalista markkinasegmenttiä perustuen siihen, mitkä tarjoamaelementit 105 valikoitua suomalaisen kone- ja metallituoteteollisuuden asiakasta ovat maininneet tärkeimmiksi. Ensimmäinen klusteri on hintatietoiset asiakkaat, jotka laskevat yksikkökohtaisia hintoja. Toinen klusteri koostuu huolto-orientoituneista asiakkaista, jotka laskevat tuntikustannuksia ja maksimoivat konekannan käyttötunteja. Tälle kohderyhmälle kannattaisi ehkä markkinoida teknisiä palveluja ja huoltosopimuksia. Kolmas klusteri on tuottavuussuuntautuneet asiakkaat, jotka ovat kiinnostuneita suorituskyvyn kehittämisestä ja laskevat tonnikohtaisia kustannuksia. He tavoittelevat alempia kokonaiskustannuksia lisääntyneen suorituskyvyn, pidemmän käyttöiän ja alempien huoltokustannusten kautta.
Resumo:
Due to increasing waterborne transportation in the Gulf of Finland, the risk of a hazardous accident increases and therefore manifold preventive actions are needed. As a main legislative authority in the maritime community, The International Maritime Organization (IMO) has set down plenary laws and recommendations which are e.g., utilised in the safe operations in ships and pollution prevention. One of these compulsory requirements, the ISM Code, requires proactive attitude both from the top management and operational workers in the shipping companies. In this study, a crosssectional approach was taken to analyse whether the ISM Code has actively enhanced maritime safety in the Gulf of Finland. The analysis included; 1) performance of the ISM Code in Finnish shipping companies, 2) statistical measurements of maritime safety, 3) influence of corporate top management to the safety culture and 4) comparing safety management practices in shipping companies and port operations of Finnish maritime and port authorities. The main results found were that maritime safety culture has developed in the right direction after the launch of the ISM Code in the 1990´s. However, this study does not exclusively prove that the improvements are the consequence of the ISM Code. Accident prone ships can be recognized due to their behaviour and there is a lesson to learn from the safety culture of some high standard safety disciplines such as, air traffic. In addition, the reporting of accidents and nearmisses should be more widely used in shipping industry. In conclusion, there is still much to be improved in the maritime safety culture of the Finnish Shipping industry, e.g., a “no blame culture” needs to be adopted.
Resumo:
Cutin and suberin are structural and protective polymers of plant surfaces. The epidermal cells of the aerial parts of plants are covered with an extracellular cuticular layer, which consists of polyester cutin, highly resistant cutan, cuticular waxes and polysaccharides which link the layer to the epidermal cells. A similar protective layer is formed by a polyaromatic-polyaliphatic biopolymer suberin, which is present particularly in the cell walls of the phellem layer of periderm of the underground parts of plants (e.g. roots and tubers) and the bark of trees. In addition, suberization is also a major factor in wound healing and wound periderm formation regardless of the plants’ tissue. Knowledge of the composition and functions of cuticular and suberin polymers is important for understanding the physiological properties for the plants and for nutritional quality when these plants are consumed as foods. The aims of the practical work were to assess the chemical composition of cuticular polymers of several northern berries and seeds and suberin of two varieties of potatoes. Cutin and suberin were studied as isolated polymers and further after depolymerization as soluble monomers and solid residues. Chemical and enzymatic depolymerization techniques were compared and a new chemical depolymerization method was developed. Gas chromatographic analysis with mass spectrometric detection (GC-MS) was used to assess the monomer compositions. Polymer investigations were conducted with solid state carbon-13 cross polarization magic angle spinning nuclear magnetic resonance spectroscopy (13C CP-MAS NMR), Fourier transform infrared spectroscopy (FTIR) and microscopic analysis. Furthermore, the development of suberin over one year of post-harvest storage was investigated and the cuticular layers from berries grown in the North and South of Finland were compared. The results show that the amounts of isolated cuticular layers and cutin monomers, as well as monomeric compositions vary greatly between the berries. The monomer composition of seeds was found to differ from the corresponding berry peel monomers. The berry cutin monomers were composed mostly of long-chain aliphatic ω-hydroxy acids, with various mid-chain functionalities (double-bonds, epoxy, hydroxy and keto groups). Substituted α,ω-diacids predominated over ω-hydroxy acids in potato suberin monomers and slight differences were found between the varieties. The newly-developed closed tube chemical method was found to be suitable for cutin and suberin analysis and preferred over the solvent-consuming and laborious reflux method. Enzymatic hydrolysis with cutinase was less effective than chemical methanolysis and showed specificity towards α,ω-diacid bonds. According to 13C CP-MAS NMR and FTIR, the depolymerization residues contained significant amounts of aromatic structures, polysaccharides and possible cutan-type aliphatic moieties. Cultivation location seems to have effect on cuticular composition. The materials studied contained significant amounts of different types of biopolymers that could be utilized for several purposes with or without further processing. The importance of the so-called waste material from industrial processes of berries and potatoes as a source of either dietary fiber or specialty chemicals should be further investigated in detail. The evident impact of cuticular and suberin polymers, among other fiber components, on human health should be investigated in clinical trials. These by-product materials may be used as value-added fiber fractions in the food industry and as raw materials for specialty chemicals such as lubricants and emulsifiers, or as building blocks for novel polymers.
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This dissertation is based on 5 articles which deal with reaction mechanisms of the following selected industrially important organic reactions: 1. dehydrocyclization of n-butylbenzene to produce naphthalene 2. dehydrocyclization of 1-(p-tolyl)-2-methylbutane (MB) to produce 2,6-dimethylnaphthalene 3. esterification of neopentyl glycol (NPG) with different carboxylic acids to produce monoesters 4. skeletal isomerization of 1-pentene to produce 2-methyl-1-butene and 2-methyl-2-butene The results of initial- and integral-rate experiments of n-butylbenzene dehydrocyclization over selfmade chromia/alumina catalyst were applied when investigating reaction 2. Reaction 2 was performed using commercial chromia/alumina of different acidity, platina on silica and vanadium/calcium/alumina as catalysts. On all catalysts used for the dehydrocyclization, major reactions were fragmentation of MB and 1-(p-tolyl)-2-methylbutenes (MBes), dehydrogenation of MB, double bond transfer, hydrogenation and 1,6-cyclization of MBes. Minor reactions were 1,5-cyclization of MBes and methyl group fragmentation of 1,6- cyclization products. Esterification reactions of NPG were performed using three different carboxylic acids: propionic, isobutyric and 2-ethylhexanoic acid. Commercial heterogeneous gellular (Dowex 50WX2), macroreticular (Amberlyst 15) type resins and homogeneous para-toluene sulfonic acid were used as catalysts. At first NPG reacted with carboxylic acids to form corresponding monoester and water. Then monoester esterified with carboxylic acid to form corresponding diester. In disproportionation reaction two monoester molecules formed NPG and corresponding diester. All these three reactions can attain equilibrium. Concerning esterification, water was removed from the reactor in order to prevent backward reaction. Skeletal isomerization experiments of 1-pentene were performed over HZSM-22 catalyst. Isomerization reactions of three different kind were detected: double bond, cis-trans and skeletal isomerization. Minor side reaction were dimerization and fragmentation. Monomolecular and bimolecular reaction mechanisms for skeletal isomerization explained experimental results almost equally well. Pseudohomogeneous kinetic parameters of reactions 1 and 2 were estimated by usual least squares fitting. Concerning reactions 3 and 4 kinetic parameters were estimated by the leastsquares method, but also the possible cross-correlation and identifiability of parameters were determined using Markov chain Monte Carlo (MCMC) method. Finally using MCMC method, the estimation of model parameters and predictions were performed according to the Bayesian paradigm. According to the fitting results suggested reaction mechanisms explained experimental results rather well. When the possible cross-correlation and identifiability of parameters (Reactions 3 and 4) were determined using MCMC method, the parameters identified well, and no pathological cross-correlation could be seen between any parameter pair.
Resumo:
Mobiltelefonen uppfanns år 1970, den förta komerciella produkten lanserades 1983 och marknaden för mobiltelefoner tog kraftigt fart 1986. Exemplet belyser fenomenet innovation såsom ett mångårigt, ofta upptill tio år eller årtionden, vilket är forkningsansatsen i doktorsavhandlingen. Studien har betraktat fenomenet utgående från ett företagsledningsperspektiv, inte som ett innovations projekt vilket är det trditionella perspektivet. Forskningen bygger vidare på kritiken mot den allmänna uppfattningen att nystartade små och entrepreneursdrivna företag är idealomgivningen för innovation. I forskningen har studerats gamla och stora innovativa konsumentvaruföretag. De sex studerade företagen drivs inte längre av företagets grundare, hans tankar, nätverk, ledningssätt, utan är mera influerat av strukturer, system och prosesser som och iståndsatts av en annan professionell ledning. Denna ledning har i viss mån förmått att professionalisera sättet hur innovation hanteras framgångsrikt i företaget. I forskningen har den innovativa företagsledningens tankevärld och dynamiken i tänkandet definierats. Genom studien framkommer dels tre påtagliga tankemönster och dels en generell beskrivning av ledningen för ett innovativt företag. Kärnan i arbetet definierar ledningens uppmärksamhetsområde vilket är kritiskt för att det innovativa tillståndet och cykeln för innovation har fortbestått. Innovationsaktivisternas roll är avgörande, där produkten formas som en funktion av idéer som någon har och jobbar med, av beslutsfattadet i företaget, samt av tolkning och slutledningen av företagets gällande och framtida verksamhetsvilkor. Detta kritiska uppmärksamhetsområde har även testats och verifierats i avhandlingen. Ur forskningen framstår belägg och ett förslag till en teori, med vilken det är möjligt att förklarar skillnaden i ledningens tänkande vid betraktelsen av de innovativa företagen och de icke-innovativa företagen.
Resumo:
Svavel förekommer i kol och olja och oxideras vid förbränning till svaveldioxid (SO2). Årligen utsläpps stora mängder svaveldioxid som åstadkommer sura regn, minskning av stratosfäriskt ozon och sjukdomar. Av dessa orsaker är det nödvändigt att minska utsläppen av svaveldioxid. Den teknologi som rör planering av reaktorer och processer för rökgasavsvavling (FGD) har utvecklats kraftigt och idag använder man olika typer av lösningar. De vanligaste alternativen för FGD är våtskrubber- och semitorra skrubbersystem (Spray Dry Scrubbers, SDS) och injektionsprocesser för absorbenter. SDS-processer har studerats bland annat av Ahlbeck [4] och Klingspor [5] och injektionsprocesser av Alvfors [6]. Kalksten, som i huvusak består av kalciumkarbonat, används i rökgasavsvavling på grund av sin förmåga att binda svavel i form av sulfatsalter. Den vanligaste rökgasavsvavlingsmetoden är våtskrubbning, där det sedimentära stenmaterialets upplösningshastighet är en av de faktorer som påverkar resultatet mest. Utvärdering av kalkstensreaktivitet är därför speciellt viktig vid planering och drift av anläggningar för rökgasavsvavling. Målsättningen med detta arbete var att modellera upplösningen av olika typers kalksten för att få en kvantitativ utvärdering av kvaliteten på de analyserade proverna. Därtill testades även karbonatbiprodukter från stålindustrin för att utvärdera möjligheter att använda andra råmaterial. Det transienta förloppet har analyserats, varvid upplösningshastigheten modellerades bl.a. i avseende på tid och pH. Under arbetets gång har antalet empiriska korrelationer minskats till fördel för fysikaliska modeller av diffusiva och konvektiva masstransportfenomen. En målsättning var att skapa en effektiv och snabb metod för att testa olika absorbenter för rökgasavsvavling under transienta förlopp. I arbetet användes PSD-analys, gjordes pH-mätningar och andra utvärderingar av de fysikaliska parametrar som ingår i beräkningarna. On-line mätningar för de icke-stationära variablerna tid och pH ger möjlighet att eliminera osäkerheter. Vissa modeller kan vara komplicerade. En modell för upplösningshastigheten med mer detaljerad utvärdering av parametrar och färre approximationer är därför nödvändig då man vill utvärdera reaktionshastigheten för fasta partiklar i sur miljö. Arbetet utfördes under fyra år och fem peer review-artiklar ingår i avhandlingen.
Resumo:
Tämän kandidaatintyön tavoitteena on tutkia osakkeen nimellisarvon jakamisen vaikutusta osakkeen markkina-arvoon Suomessa vuosina 1996-2007. Ilmiötä tarkastellaan tapahtumatutkimusmenetelmän avulla ja lopullinen tutkittavien osakesplittien määrä on 38. Tutkimuksessa ei löydetty epänormaaleja tuottoja splittien julkistushetkellä, joten tämän aineiston mukaan sijoittajat eivät pitäneet sitä johdolta tulevana positiivisena signaalina. Sitä vastoin tutkimuksessa löydettiin positiivinen kurssimuutos niiden osakkeiden kohdalla, jolloin pörssiyhtiö ilmoitti splitin ohella myös osingonjaostaan.
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The goal of this study is to develop managerial recommendations for international vendors and system integrators, which offer Software as a Service for enterprise information systems on the Russian market. Those recommendations can be used to develop marketing, sales, new product and service level agreement strategies. For those reasons factors affecting SaaS adoption were determined and their influence on intention to adoption was examined.
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The paper presents a study which is aimed at building a knowledge model for a case company – business incubator “Ingria” (St. Petersburg, Russia). The business incubator is one of its kind organization in St. Petersburg, and one of the few in Russia, providing services for innovative entrepreneurial companies at an international level. Business incubation impact is deeply researched from the point of view of knowledge engineering. The paper also provides a broad analysis of various knowledge engineering tools used for visualization of knowledge, as well as knowledge modeling techniques.
Resumo:
The importance of the company’s intellectual capital (IC) increased during the last decades due to knowledge-based economy development. Despite the clear understanding of the IC importance, researchers agree on the fact that many difficulties in management of intangibles still exist from the both theoretical and practical points of view. The goal of the study is to conduct a comparison of IC management approaches used in international and Russian software companies. To carry out a proper comparison and identify similarities and differences, software firms are explored from the point of view of IC, and then be compared in the context of international and Russian sectors. At the end of the study, current IC management findings in international and Russian software companies are presented, and comparison of IC management is done. It was investigated from the comparison that international and Russian software companies have similarities and few principal differences in several IC management areas. The comparison of IC management approaches between international and Russian software companies provide helpful information to both, researchers and practitioners.
Resumo:
Increasing globalisation and intensified cross-border cooperation, together with significant technological breakthroughs, create a fascinating gap for the research of the relationship between internationalisation and innovation on national, regional and company levels in Russia. The intensified international trade between countries and regions benefited from favourable institutional conditions, and facilitated the technology transfer and the development of innovations on the national level. This study approaches the same question from the company perspective; if certain companies are more innovative than other domestic companies, will they start internationalisation more easily or get involved in cooperation with international stakeholders? When companies operate in international markets, how do they obtain knowledge? Moreover, would this new knowledge from the foreign market help then to increase innovativeness, competitiveness and develop operations in domestic/local and foreign markets? Considering the role of foreign direct investments (FDI), the research in hand tries to find out the role of companies with FDI on the other players on the home market. Do foreigners bring new technology, innovation to the country? Is there spillover effect observed and how local companies can benefit from them? This dissertation studies the internationalisation and innovation in Russian companies, both from the outward internationalisation and inward internationalisation perspectives. Russian companies developed quickly during the transition period, after the dissolution of the Soviet Union. The common background of these companies, the effects of the change of ownership, and some managerial difficulties make them more sensitive to competitions issues, and in this context, the opportunities brought by the developing innovations are seen in companies and on the governmental level.