814 resultados para labour Supply


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Spain’s transport infrastructure policy has become a paradigmatic case of oversupply and of mismatch with demand. The massive expansion of the country’s transport infrastructure over the last decade has not been a response to demand bottlenecks or previously identified needs. For this reason, the intensity of use today on all interurban modes of transport in Spain falls well below that of other EU countries. This paper analyzes the institutional and regulatory factors that have permitted this policy, allowing us to draw lessons from the Spanish case that should help other countries avoid the pitfalls and shortcomings of Spanish policy.

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Spain’s transport infrastructure policy has become a paradigmatic case of oversupply and of mismatch with demand. The massive expansion of the country’s transport infrastructure over the last decade has not been a response to demand bottlenecks or previously identified needs. For this reason, the intensity of use today on all interurban modes of transport in Spain falls well below that of other EU countries. This paper analyzes the institutional and regulatory factors that have permitted this policy, allowing us to draw lessons from the Spanish case that should help other countries avoid the pitfalls and shortcomings of Spanish policy.

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The effect of dissolved nutrients on growth, nutrient content and uptake rates of Chaetomorpha linum in a Mediterranean coastal lagoon (Tancada, Ebro delta, NE Spain) was studied in laboratory experiments. Water was enriched with distinct forms of nitrogen, such as nitrate or ammonium and phosphorus. Enrichment with N, P or with both nutrients resulted in a significant increase in the tissue content of these nutrients. N-enrichment was followed by an increase in chlorophyll content after 4 days of treatment, although the difference was only significant when nitrate was added without P. P-enrichment had no significant effect on chlorophyll content. In all the treatments an increase in biomass was obseved after 10 days. This increase was higher in the N+P treatments. In all the treatments the uptake rate was significantly higher when nutrients were added than in control jars. The uptake rate of N, as ammonium, and P were significantly higher when they were added alone while that of N as nitrate was higher in the N+P treatment. In the P-enriched cultures, the final P-content of macroalgal tissues was ten-fold that of the initial tissue concentrations, thereby indicating luxury P-uptake. Moreover, at the end of the incubation the N:P ratio increased to 80, showing that P rather than N was the limiting factor for C. linum in the Tancada lagoon. The relatively high availability of N is related to the N inputs from rice fields that surround the lagoon and to P binding in sediments.

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Tämä pro gradu -tutkielma käsitteleekustannusten ja ajan analysointia elintarviketeollisuuden arvoverkostossa. Teoriaosuuden kantavia käsitteitä ovat arvoverkosto, Lean Management -ideologia, Value Stream Mapping ja Supply Chain Time and Cost Mapping. Tutkimus toteutetaan case - tutkimuksena, ja siinä on piirteitä niin kvalitatiivisesta kuin kvantitatiivisesta tutkimusasetelmasta. Teoriaosuuden lähteinä on käytetty tieteellisissä julkaisuissa ilmestyneitä journal -artikkeleita sekä alan kirjallisuutta. Tutkimus liittyy olennaisena osana Elintarviketeollisuuden Uudistuva Liiketoiminta -projektiin ja antaa tätä kautta kontekstin muille tutkimuksille sekä konkreettisenesimerkin kyseisestä arvoverkostosta. Empiirisen osan case-yrityksinä ovat Saarioinen Oy, Tuoretie Oy ja Ruokakesko Oy. Analyysin kohteena onLiha-Saarioisten valmistama karjalanpiirakka-tuoteryhmä. Konkreettisena tutkimustuloksena on karjalanpiirakan prosessikuvaus koko arvoketjun matkalta, kustannuskertymä, aikaperusteinen analyysi ja kustannus-aika-kuvaaja. Lisäksi arvoketjun matkalla tehdyistä haastatteluista on kerätty kehitysehdotuksia sekä samalla etsitty hukkatoimintoja. Tuloksista voi tehdä sen johtopäätöksen, että karjalanpiirakka on tyypillinen elintarvike, jonka kustannuksista suurin osa on raaka-aineita ja tuotannon työtä. Aikaa arvoketjussa kuluu eniten kaupan hyllyllä. Organisaatioidenyhteistyöllä aikaa ja sitä kautta kustannuksia olisi kuitenkin mahdollisuus vielä karsia.

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RPE65 is a retinoid isomerase required for the production of 11-cis-retinal, the chromophore of both cone and rod visual pigments. We recently established an R91W knock-in mouse strain as homologous animal model for patients afflicted by this mutation in RPE65. These mice have impaired vision and can only synthesize minute amounts of 11-cis-retinal. Here, we investigated the consequences of this chromophore insufficiency on cone function and pathophysiology. We found that the R91W mutation caused cone opsin mislocalization and progressive geographic cone atrophy. Remnant visual function was mostly mediated by rods. Ablation of rod opsin corrected the localization of cone opsin and improved cone retinal function. Thus, our analyses indicate that under conditions of limited chromophore supply rods and cones compete for 11-cis-retinal that derives from regeneration pathway(s) which are reliant on RPE65. Due to their higher number and the instability of cone opsin, rods are privileged under this condition while cones suffer chromophore deficiency and degenerate. These findings reinforce the notion that in patients any effective gene therapy with RPE65 needs to target the cone-rich macula directly to locally restore the cones' chromophore supply outside the reach of rods.

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VALOSADE (Value Added Logistics in Supply and Demand Chains) is the research project of Anita Lukka's VALORE (Value Added Logistics Research) research team inLappeenranta University of Technology. VALOSADE is included in ELO (Ebusiness logistics) technology program of Tekes (Finnish Technology Agency). SMILE (SME-sector, Internet applications and Logistical Efficiency) is one of four subprojects of VALOSADE. SMILE research focuses on case network that is composed of small and medium sized mechanical maintenance service providers and global wood processing customers. Basic principle of SMILE study is communication and ebusiness insupply and demand network. This first phase of research concentrates on creating backgrounds for SMILE study and for ebusiness solutions of maintenance case network. The focus is on general trends of ebusiness in supply chains and networksof different industries; total ebusiness system architecture of company networks; ebusiness strategy of company network; information value chain; different factors, which influence on ebusiness solution of company network; and the correlation between ebusiness and competitive advantage. Literature, interviews and benchmarking were used as research methods in this qualitative case study. Networks and end-to-end supply chains are the organizational structures, which can add value for end customer. Information is one of the key factors in these decentralized structures. Because of decentralization of business, information is produced and used in different companies and in different information systems. Information refinement services are needed to manage information flows in company networksbetween different systems. Furthermore, some new solutions like network information systems are utilised in optimising network performance and in standardizingnetwork common processes. Some cases have however indicated, that utilization of ebusiness in decentralized business model is not always a necessity, but value-add of ICT must be defined case-specifically. In the theory part of report, different ebusiness and architecture models are introduced. These models are compared to empirical case data in research results. The biggest difference between theory and empirical data is that models are mainly developed for large-scale companies - not for SMEs. This is due to that implemented network ebusiness solutions are mainly large company centered. Genuine SME network centred ebusiness models are quite rare, and the study in that area has been few in number. Business relationships between customer and their SME suppliers are nowadays concentrated more on collaborative tactical and strategic initiatives besides transaction based operational initiatives. However, ebusiness systems are further mainly based on exchange of operational transactional data. Collaborative ebusiness solutions are in planning or pilot phase in most case companies. Furthermore, many ebusiness solutions are nowadays between two participants, but network and end-to-end supply chain transparency and information systems are quite rare. Transaction volumes, data formats, the types of exchanged information, information criticality,type and duration of business relationship, internal information systems of partners, processes and operation models (e.g. different ordering models) differ among network companies, and furthermore companies are at different stages on networking and ebusiness readiness. Because of former factors, different customer-supplier combinations in network must utilise totally different ebusiness architectures, technologies, systems and standards.

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VVALOSADE is a research project of professor Anita Lukka's VALORE research team in the Lappeenranta University of Technology. The VALOSADE includes the ELO technology program of Tekes. SMILE is one of four subprojects of the VALOSADE. The SMILE study focuses on the case of the company network that is composed of small and micro-sized mechanical maintenance service providers and forest industry as large-scale customers. The basic principle of the SMILE study is the communication and ebusiness in supply and demand networks. The aim of the study is to develop ebusiness strategy, ebusiness model and e-processes among the SME local service providers, and onthe other hand, between the local service provider network and the forest industry customers in a maintenance and operations service business. A literature review, interviews and benchmarking are used as research methods in this qualitative case study. The first SMILE report, 'Ebusiness between Global Company and Its Local SME Supplier Network', concentrated on creating background for the SMILE study by studying general trends of ebusiness in supply chains and networks of different industries. This second phase of the study concentrates on case network background, such as business relationships, information systems and business objectives; core processes in maintenance and operations service network; development needs in communication among the network participants; and ICT solutions to respond needs in changing environment. In the theory part of the report, different ebusiness models and frameworks are introduced. Those models and frameworks are compared to empirical case data. From that analysis of the empirical data, therecommendations for the development of the network information system are derived. In process industry such as the forest industry, it is crucial to achieve a high level of operational efficiency and reliability, which sets up great requirements for maintenance and operations. Therefore, partnerships or strategic alliances are needed between the network participants. In partnerships and alliances, deep communication is important, and therefore the information systems in the network also are critical. Communication, coordination and collaboration will increase in the case network in the future, because network resources must be optimised to improve competitive capability of the forest industry customers and theefficiency of their service providers. At present, ebusiness systems are not usual in this maintenance network. A network information system among the forest industry customers and their local service providers actually is the only genuinenetwork information system in this total network. However, the utilisation of that system has been quite insignificant. The current system does not add value enough either to the customers or to the local service providers. At present, thenetwork information system is the infomediary that share static information forthe network partners. The network information system should be the transaction intermediary, which integrates internal processes of the network companies; the network information system, which provides common standardised processes for thelocal service providers; and the infomediary, which share static and dynamic information on right time, on right partner, on right costs, on right format and on right quality. This study provides recommendations how to develop this system in the future to add value to the network companies. Ebusiness scenarios, vision, objectives, strategies, application architecture, ebusiness model, core processes and development strategy must be considered when the network information system will be developed in the next development step. The core processes in the case network are demand/capacity management, customer/supplier relationship management, service delivery management, knowledge management and cash flow management. Most benefits from ebusiness solutions come from the electrifying of operational level processes, such as service delivery management and cash flow management.

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VALOSADE (Value Added Logistics in Supply and Demand Chains) on Lappeenrannan teknillisen yliopiston ja sielläprofessori Anita Lukan VALORE -tutkimusryhmän toteuttama tutkimusprojekti, jonka rahoittaja on ollut Tekes. Projekti on osa Tekesin ELO - Elektronisen liiketoiminnan logistiikka - teknologiaohjelmaa. Tutkimusta rahoittivat Tekesin lisäksi neljä yritystä, jotka toimivat myös tutkimustyön kohteina ja toimivat tarpeen mukaan yhteistyössä tutkijoiden kanssa. Yritysten toimialat ovat metsäteollisuus, laitevalmistaja, joka tarjoaa myös tuotteilleen jälkimarkkinapalveluja sekä kaksi logistiikkapalveluyritystä. Tämä työraportti liittyy VALOSADE - tutkimusprojektin osaprojektiin Costfix (Paper Mill Process - from Fixed Costs into Variable Costs). Costfix - projektin tavoitteena on tutkia ja löytää paperiteollisuudelle uusia toimintamalleja, jotka mahdollistavat kiinteiden kustannusten muuttamisen muuttuviksi. Merkittävä tutkimuksen osa-alue on myös tutkimuskohteiden liike-toiminnan nykytilan aiempaa tarkempi selvittäminen. Tämä työraportti käsittelee kunnossapidon materiaalilogistiikan osalta tehtaan sisällä tapahtuvaa toimintaa, josta tässä tutkimuksessa käytetään nimitystä tehdaslogistiikka. Nykytilaselvityksen perusteella nykyinen prosessiteollisuudessa ja myös pääsääntöisesti valmistavassa teollisuudessa yleisesti vallitseva teollisuusyrityksen käyttöinvestointia ylläpitävän palveluprosessin toimintarakenne, johtamistapa ja prosessin operatiivisten tehtävien toimenkuvat eivät tue ko. palvelukokonaisuuden tehokasta ja tuloksellista toteuttamista. Nykymuotoinen toimintamalli pikemminkin rajoittaa toimintaprosessin kokonaishallintaa ja sen tehostamiseksi investoitujen uusien teknisten ratkaisujen ja teknologian käyttöönottoa. Lisäksi yleisesti vallitseva toimintakulttuuri (mm. arvokäsitykset, uskomukset sekä toiminnan ja tavoitteiden taustalla olevat motiivit) sekä vaikeuttaa nykyisen ja tulevan kilpailutilanteen edellyttämien tehokkuus- ja tuottavuustavoitteiden toteutumista että hidastaa uudistusten onnistumista edellyttävän muutoksen etenemistä yrityksen sisällä. Tutkimuksen tulokset vahvistivat osaltaan sen, että tehdas- ja toimintokeskeinen johtaminen aiheuttavat palveluprosessin eri tehtäville asetettujen tavoitteiden ja perustehtäväkäsityksen välille ristiriitoja, joista seuraa sekä suoria että välillisiä vaikutuksia teollisuusyrityksen tuotantoprosessin toiminnan laatuun ja tuotantolaitteiden käyttövarmuuteen. Palvelukokonaisuuteen kuuluvien eri toimintaprosessien tehtävät on jaettu ristiriitaisesti toiminnoille siten, että erityisestikunnossapidon teknisten toimihenkilöitten hoidettavana on sekä ihmisen henkilökohtaisen kapasiteettirajan ylittävä että toisistaan liian suuri erilaisia osaamisia ja ymmärrystä edellyttävä tehtävämäärä. Nykytilan palvelutuotannossa esiintyvien ongelmien seuraukset ja perussyyt osoittavat, että merkittävästi pääomia sitovan valmistavan teollisuuden (mm. prosessiteollisuus) käyttö-omaisuutta ylläpitävän palveluprosessin hallinta on ulkoistettava tehdastasolta itsenäisesti hoidettavaksi liiketoimintakokonaisuudeksi, jonka operatiivinen johtaminen tapahtuu toimintaprosesseittain konsernin ylätasolta käsin. Johtamismallissa painottuu prosessijohtaminen ja oman vastuualueen toimintaprosessin asiantuntemus. Lisäksi ihmisen osaamiseen, ymmärrykseen ja toimintatapaan perustuva palvelu edellyttää johtamiselta henkilöjohtamistaitoa ja osaamisen johtamista. Liiketoiminnan uudenlainen keskittyminen, verkostoituminen ja globalisoituminen edellyttävät johdoltamyös erilaisten toimintaverkostojen ja sidosryhmien toiminnan ja tarpeen ymmärtämistä. Tutkimustulosten perusteella myös palveluprosesseissa toimivien toimihenkilöitten tehtäväkuvia on muutettava radikaalisti ja osa uusista toimenkuvista edellyttää lisäksi henkilöitten osaamistason aktiivista parantamista. Tässä raportissa esitetään toimintamalli, jossa kuvataan tutkimuksen pohjalta luotu palvelukokonaisuuden johtamismalli ja palveluprosessien eri tehtävätasot tehtävineen. Kuvattu johtamismalli on ollut jo yleisesti käytössä yksittäisillä palvelualoilla, mutta tässä esitetty malli on valmistavan yrityksen teknisiin tukipalveluihin muokattu sovellus.

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Abstract The research problem in the thesis deals with improving the responsiveness and efficiency of logistics service processes between a supplier and its customers. The improvement can be sought by customizing the services and increasing the coordination of activities between the different parties in the supply chain. It is argued that to achieve coordination the parties have to have connections on several levels. In the framework employed in this research, three contexts are conceptualized at which the linkages can be planned: 1) the service policy context, 2) the process coordination context, and 3) the relationship management context. The service policy context consists of the planning methods by which a supplier analyzes its customers' logistics requirements and matches them with its own operational environment and efficiency requirements. The main conclusion related to the service policy context is that it is important to have a balanced selection of both customer-related and supplier-related factors in the analysis. This way, while the operational efficiency is planned a sufficient level of service for the most important customers is assured. This kind of policy planning involves taking multiple variables into the analysis, and there is a need to develop better tools for this purpose. Some new approaches to deal with this are presented in the thesis.The process coordination context and the relationship management context deal with the issues of how the implementation of the planned service policies can be facilitated in an inter-organizational environment. Process coordination includes typically such mechanisms as control rules, standard procedures and programs, but inhighly demanding circumstances more integrative coordination mechanisms may be necessary. In the thesis the coordination problems in third-party logistics relationship are used as an example of such an environment. Relationship management deals with issues of how separate companies organize their relationships to improve the coordination of their common processes. The main implication related to logistics planning is that by integrating further at the relationship level, companies can facilitate the use of the most efficient coordination mechanisms and thereby improve the implementation of the selected logistics service policies. In the thesis, a case of a logistics outsourcing relationship is used to demonstrate the need to address the relationship issues between the service provider andthe service buyer before the outsourcing can be done.The dissertation consists of eight research articles and a summarizing report. The principal emphasis in the articles is on the service policy planning context, which is the main theme of six articles. Coordination and relationship issues are specifically addressed in two of the papers.

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Finland has large forest fuel resources. However, the use of forest fuels for energy production has been low, except for small-scale use in heating. According to national action plans and programs related to wood energy promotion, the utilization of such resources will be multiplied over the next few years. The most significant part of this growth will be based on the utilization of forest fuels, produced from logging residues of regeneration fellings, in industrial and municipal power and heating plants. Availability of logging residues was analyzed by means of resource and demand approaches in order to identify the most suitable regions with focus on increasing the forest fuel usage. The analysis included availability and supply cost comparisons between power plant sites and resource allocation in a least cost manner, and between a predefined power plant structure under demand and supply constraints. Spatial analysis of worksite factors and regional geographies were carried out using the GIS-model environment via geoprocessing and cartographic modeling tools. According to the results of analyses, the cost competitiveness of forest fuel supply should be improved in order to achieve the designed objectives in the near future. Availability and supply costs of forest fuels varied spatially and were very sensitive to worksite factors and transport distances. According to the site-specific analysis the supply potential between differentlocations can be multifold. However, due to technical and economical reasons ofthe fuel supply and dense power plant infrastructure, the supply potential is limited at plant level. Therefore, the potential and supply cost calculations aredepending on site-specific matters, where regional characteristics of resourcesand infrastructure should be taken into consideration, for example by using a GIS-modeling approach constructed in this study.

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Field experiments were conducted at two locations during two growing seasons in the Ebro Valley (Spain), to evaluate the effects of N fertilization on yield and quality of Mediterranean-type wheat in irrigated conditions. Seven N treatments and a control were investigated. The average grain yields ranged from 2117 to 5551 kg ha-1 depending on the year and location. Grain protein ranged from 14.25 to 16.9%, and other quality parameters such as the dough strength (W) also varied with year and location, confirming the suitability of Mediterranean-type wheat and the climate for the production of good bread-making quality wheat. However, grain yields are normally low and both yields and quality can be greatly affected by the variability of this type of climate, even under irrigation. Under these conditions, grain yield increases were mainly due to an increase in the number of grains per m2 without a reduction in the N content per spike, suggesting that N in the grain was not source-limited, possibly due to the lower grain yields and relatively high soil nitrate concentrations. In soils with lower initial soil NO-3N contents, better grain yields could be achieved by applying a N fertilizer rate of about 100 kg N ha-1, whereas in soils with high initial NO-3N contents, no N or a maximum rate of 50 kg N ha-1 is needed to obtain a good grain quality, showing the possibility of producing high-quality wheat with a low amount of N fertilizer and thus increasing the sustainability of the cropping system.