Approaches to Supply Chain Risk Management: Identification, Analysis and Control

Supply chain risk management has emerged as an increasingly important issue in logistics as disruptions in the supply chain have become critical issues for many companies. The scientific literature on the subject is developing and in many respects the understanding of it is still in its infancy. Thus, there is a need for more information in order for scholars and practitioners to understand the causalities and interrelations that characterise the phenomenon. The aim of this dissertation is to narrow this gap by exploring key aspects of supply chain risk management through two maritime supply chains in the immediate region of the Gulf of Finland. The study contributes to the field in three different ways. Firstly, it facilitates the identification of risks on different levels of the supply chain through a systematic analysis of the processes and actors, and of the cognitive barriers that limit the actors’ visibility and their understanding of the operations and the risks involved. There is a clear need to increase collaboration and information exchange in order to improve visibility in the chain. Risk management should be a collaborative effort among the individual actors, aimed at obtaining a holistic picture. Secondly, the study contributes to the literature on risk analysis through the use of systemic frameworks that illustrate the causalities and linkages in the system, thereby making it easier to perceive the vulnerabilities. Thirdly, the study enhances current knowledge of risk control in identifying actor roles, risk visibility and risk controllability as being among the key factors determining risk-management effectiveness against supply-chain vulnerability. This dissertation is divided into two parts. The first part gives a general overview of the relevant literature, the research design and the conclusions of the study, and the second part comprises six research publications. Case-study methodology with systematic combining approach is used, where in-depth interviews, questionnaires and expert panel sessions are the main data collection methods. The study illustrates the current state of risk management in multimodal maritime supply chains, and develops frameworks for further analysis. The results imply that there are major differences between organizations in their ability to execute supply chain risk management. Further collaboration should be considered in order to facilitate the development of systematic and effective management processes.

Usable Privacy Preservation in Mobile Electronic Personality

Personalised ubiquitous services have rapidly proliferated due technological advancements in sensing, ubiquitous and mobile computing. Evolving societal trends, business and the economic potential of Personal Information (PI) have overlapped the service niches. At the same time, the societal thirst for more personalised services has increased and are met by soliciting deeper and more privacy invasive PI from customers. Consequentially, reinforcing traditional privacy challenges and unearthed new risks that render classical safeguards ine ective. The absence of solutions to criticise personalised ubiquitous services from privacy perspectives, aggravates the situation. This thesis presents a solution permitting users' PI, stored in their mobile terminals to be disclosed to services in privacy preserving manner for personalisation needs. The approach termed, Mobile Electronic Personality Version 2 (ME2.0), is compared to alternative mechanisms. Within ME2.0, PI handling vulnerabilities of ubiquitous services are identi ed and sensitised on their practices and privacy implications. Vulnerability where PI may leak through covert solicits, excessive acquisitions and legitimate data re-purposing to erode users privacy are also considered. In this thesis, the design, components, internal structures, architectures, scenarios and evaluations of ME2.0 are detailed. The design addresses implications and challenges leveraged by mobile terminals. ME2.0 components and internal structures discusses the functions related to how PI pieces are stored and handled by terminals and services. The architecture focusses on di erent components and their exchanges with services. Scenarios where ME2.0 is used are presented from di erent environment views, before evaluating for performance, privacy and usability.

Paradigmas e evidências da nutrição peri-operatória

Understanding perioperative pathophysiology and implementing care regimes, through a multimodal approach, to reduce the organic response to stress after surgery and the related postoperative ileus, are major challenges. Multimodal surgical strategies such as pre-operative intake of a carbohydrate drink, instead of the usually recommended 2- to 6-hour period of nothing-bymouth, together with patient's education of the postoperative care plan, plus efficacious analgesia and early postoperative nutrition, among others, have been described to significantly impact on the previous variables. Therefore, these strategies accelerate rehabilitation and, as a consequence, decrease complications and hospital length of stay and, its related costs.

Volume de fluído intravenoso e alta hospitalar precoce em colecistectomia aberta

OBJETIVO: Investigar se a adoção de um protocolo de restrição hídrica intravenosa em colecistectomia aberta diminui a permanência hospitalar. MÉTODO: Estudo prospectivo envolvendo pacientes submetidas a colecistectomia aberta após a adoção de um protocolo multimodal (projeto ACERTO). Pacientes com intercorrencias intra- ou pós-operatórias foram excluídas. Todas as pacientes receberam uma solução de carboidratos 2h antes da operação. Foram coletadas as seguintes variáveis: peso, altura, estado nutricional, volume total de fluidos intravenosos (VTFI) e volume prescrito em ml/kg de peso por dia. RESULTADOS: 64 pacientes (11 M e 53 F; idade mediana = 43 [18-65] anos) completaram o estudo. A re-alimentação pós-operatória ocorreu no mesmo dia da operação (62,5%) ou no dia seguinte (37,5%). Não foram registradas complicações infecciosas ou óbitos. O tempo mediano de internação pós-operatória foi de 1 (1-4) dia. Observou-se correlação entre o VTFI (r=0,44; p<0.001) e volume de fluídos / kg peso /dia (r=-0,29; p=0,03) e o tempo de internação pós-operatória. Alta no 1º PO foi possível em 73,3% dos casos quando a prescrição foi de até 20mL/Kg/dia e em 41,2% quando o volume prescrito foi maior (p<0.001; Odds Ratio=3,92; IC95% 1,36-11,32). CONCLUSÃO: A restrição de fluidos intravenosos em colecistectomia aberta determina alta mais precoce.

Impacto do projeto acerto na morbi-mortalidade pós-operatória em um hospital universitário

OBJETIVO: Avaliar resultados pós-operatórios de pacientes do Serviço de Cirurgia Geral do Hospital Universitário Julio Muller antes e após a implantação do protocolo multimodal ACERTO. MÉTODO: Estudo retrospectivo em fichas preenchidas prospectivamente referentes a 5974 pacientes. Foram comparadas duas fases: de Janeiro de 2002 a Dezembro de 2004 (antes da implantação do protocolo ACERTO: período AA, n=1987); e de Janeiro de 2005 a Dezembro de 2008 (após a implantação do mesmo: período DA, n=3987). Comparou-se tempo de internação hospitalar, hemotransfusões realizadas, infecções de sítio cirúrgico (ISC), complicações operatórias e óbitos. RESULTADOS: Houve uma diminuição em um dia no tempo de internação entre o período AA e DA (mediana [variação]: 4 [0-137] vs. 3 [0-126] dias e moda: 3 vs. 2 dias; p<0,001). No período AA houve uma relação de 2,53 bolsas de hemoderivados transfundidas por paciente contra 0,77 no período DA (p<0,001). Notou-se tendência decrescente no número de casos de ISC ao longo dos anos estudados (A=-153,08; AA:7,51% vs. DA: 3,36% (p<0,001; RR=2,23; IC95%:1,73-2,89). Houve ainda tendência decrescente em relação a complicações operatórias (A=-51,41; AA:7,9% vs. DA: 6,14%; p=0,02; RR=1,29; IC95%:1,03-1,60), reoperações (A=-57,10; AA:/2,65% vs. DA:1,19%; p<0,001; RR=2,22; IC95% 1,43-3,44) e óbitos (A=-62,07;2,81% vs.1,73%; p<<0,01; RR=1,63; IC95%:1,15-2,31). CONCLUSÃO: A introdução do protocolo ACERTO proporcionou melhora dos resultados cirúrgicos, expressos por menor tempo de permanência hospitalar, uso de hemoderivados, e diminuição dos casos de infecção do sítio cirúrgico, complicações operatórias e óbitos.

Manejo atual das metástases hepáticas de câncer colorretal: recomendações do Clube do Fígado de São Paulo

Aproximadamente metade dos pacientes portadores de câncer colorretal apresenta metástases hepáticas durante a evolução de sua doença que afetam diretamente o prognóstico e são diretamente responsáveis por 2/3 dos óbitos relacionados à doença. Nas últimas duas décadas o tratamento das metástases hepáticas de câncer colorretal (MHCCR) proporcionou ganho expressivo na sobrevida quando todas as opções terapêuticas são colocadas à disposição do paciente. Nesse contexto, o tratamento cirúrgico persiste como a única possibilidade de cura com índices de sobrevida em cinco anos de 25 a 58%. No entanto, apenas 1/4 dos pacientes tem doença ressecável ao diagnóstico. Por essa razão, um dos pontos fundamentais no manejo atual dos pacientes com MHCCR é o desenvolvimento de estratégias que possibilitem a ressecção completa das lesões hepáticas. O advento e aperfeiçoamento dos métodos ablativos expandiram as possibilidades da terapêutica cirúrgica, além disto, o surgimento de novos esquemas quimioterápicos e a introdução das terapias-alvo proporcionou altas taxas de resposta e alteraram definitivamente o manejo destes pacientes. O tratamento multimodal e a utilização da experiência de diversas especialidades médicas permitiram que o tratamento das MHCCR se aproximasse cada vez mais do tratamento ideal, ou seja, individualizado. Baseado em uma extensa revisão da literatura e na experiência de alguns dos centros especializados mais importantes do Brasil, o Clube do Fígado de São Paulo iniciou um trabalho de discussão multi-institucional que resultou nas recomendações que se seguem. Essas recomendações, no entanto, não visam ser absolutas, mas sim ferramentas úteis no processo de decisão terapêutica desse grupo complexo de pacientes.

Logistics of North-West Russia and Rail Baltica: Standpoints of Private Sector

The main aims of the present report are to describe the current state of railway transport in Russia, and to gather standpoints of Russian private transportation logistics sector towards the development of new railway connection called Rail Baltica Growth Corridor, connecting North-West Russia with Germany through the Baltic States and Poland. North-West Russia plays important role not only in Russian logistics, but also wider European markets as in container sea ports handling is approx. 2.5 mill. TEU p.a. and handling volume in all terminals is above 190 million tons p.a. The whole transportation logistics sector is shortly described as an operational environment for railways – this is done through technical and economic angles. Transportation development is always going in line with economics of the country, so the analysis on economical development is also presented. Logistics integration of the country is strongly influenced by its engagement in the international trade. Although, raw material handling at sea ports and container transports (imports) are blossoming, domestic transportation market is barely growing (in long-term perspective). Thus, recent entrance of Russia into World Trade Organization (WTO) is analyzed theme in this research, as the WTO is an important regulator of the foreign trade and enabler of volume growth in foreign trade related transportation logistics. However, WTO membership can influence negatively the development of Russia’s own industry and its volumes (these have been uncompetitive in global markets for decades). Data gathering in empirical part was accomplished by semi-structured case study interviews among North-West Russian logistics sector actors (private). These were conducted during years 2012-2013, and research compiles findings out of ten case company interviews. Although, there was no sea port involved in the study, most of the interviewed companies relied in European Logistics within significant parts in short sea shipping and truck combined transportation chains (in Russian part also using railways). As the results of the study, it could be concluded that Rail Baltica is seen as possible transport corridor in most of the interviewed companies, if there is enough cargo available. However, interviewees are a bit sceptical, because major and large-scale infrastructural improvements are needed. Delivery time, frequency and price level are three main factors influencing the attractiveness of Rail Baltica route. Price level is the most important feature, but if RB can offer other advantages such as higher frequency, shorter lead times or more developed set of value-added services, then some flexibility is possible for the price level. Environmental issues are not the main criteria of today, but are recognized and discussed among customers. Great uncertainty exists among respondents e.g. on forthcoming sulphur oxide ban on Baltic Sea shipping (whether or not it is going to be implemented in Russia). Rather surprisingly, transportation routes to Eastern Europe and Mediterranean area are having higher value and price space than those to Germany/Central Europe. Border crossing operations (traction monopoly at rails and customs), gauge widths as well as unclear decision-making processes (in Russia), are named as hindering factors. Performance standards for European connected logistics among Russian logistics sector representatives are less demanding as compared to neighbourhood countries belonging to EU.

Simulerade skoldilemman : redskap för utveckling av reflektionsförmåga?

Syftet med avhandlingen är att studera lärarstuderandes samtal om simulerad skolverksamhet för att söka förstå möjligheter och begränsningar med simulerade dilemman som medierande redskap för reflektion över lärares arbete. Undersökningen är genomförd under seminarier i svensk och finländsk lärarutbildning. Forskningsprocessen består av tre faser; en konstruktionsfas, en prövningsfas och en undersökningsfas. Under konstruktionsfasen producerades simuleringar på basen av en narrativ analys av semistrukturerade intervjuer med nyutbildade lärare. Simuleringarna testades med lärare och lärarstuderande i prövningsfasen. I undersökningsfasen utarbetades reflektionsfrågor och studiens empiriska data samlades in genom videoobservation. Totalt femton samtal filmades vid fem seminarier och tre olika lärosäten, två i Sverige och ett i Svenskfinland. De studerande som förekommer i datamaterialet befann sig i början, mitten och i slutet av sin lärarutbildning. Analysen bygger på Schöns olika reflektionsbegrepp och ett sociokulturellt perspektiv som bygger på den ryska kulturhistoriska skolan. Resultaten visar att de studerande engagerade sig starkt i samtalen i de flesta fall och att engagemanget var relaterat till deras uppfattningar om simuleringens autenticitet. Simuleringarna och reflektionsfrågorna användes både som sekundära och tertiära artefakter. Bland simuleringarnas modaliteter framstod ljudet som den viktigaste för nyanser av förståelse och engagemang och reflektionsfrågorna fungerade som kommunikativt stöd och strukturell scaffolding. När de studerande använde simuleringen för dekontextualisering i en öppen dialog förekom en tertiär dialog, i vilken förhandling av ny mening ägde rum. Kreativ reflektion – att se dilemmat ur olika perspektiv och reciprok reflektion – öppen utmanande dialog förekom flitigt i vilka en didaktiskanalytisk praktikgemenskap skapades. Slutsatserna är att simulerade skoldilemman kan utgöra en potential för lärarstuderandes utveckling av reflektionsförmåga när de används i mindre samtalsgrupper och den didaktiska inramningen relateras till aktuellt kursinnehåll. Om simuleringens innehåll inte upplevs som autentiskt finns dock risk för att förutfattade meningar om lärares arbete förstärks om de inte utmanas av medstuderande eller lärarutbildare.

Jännitevälipiiritaajuusmuuttajan moottorikaapelin maksimipituuden määrittely

Työssä tutkitaan, kuinka pitkää moottorikaapelia on jännitevälipiiritaajuusmuuttajan kanssa mahdollista käyttää niin, että määritellyt reunaehdot vielä toteutuvat. Tavoitteena on tuottaa tietoa myynnille, markkinoinnille, tuotehallinnalle sekä tuoteylläpidolle siitä, miten taajuus-muuttaja toimii pidemmillä moottorikaapeleilla kuin valmistaja suosittelee. Tutkitut moottori-kaapelipituudet olivat 175…1025 metriä ja tutkitut laitteet nimellislähtövirroiltaan 2,4...25 A. Työssä aihetta käsitellään jänniteheijastusten näkökulmasta. Lisäksi tutkitaan moottorikaapelin pituuden vaikutusta taajuusmuuttajan eri komponenttien lämpenemiseen. Taajuusmuuttajan toiminnallisuutta arvioidaan moottorin suunnanvaihtojen avulla sekä turvallista toimintaa oikosulkutestein. Tutkittujen taajuusmuuttajien kohdalla on mahdollista käyttää taajuusmuuttajavalmistajan suositusta pidempiä moottorikaapeleita. Moottoriliittimien ylijännitteitä aiheuttavat jännite-heijastukset eivät aiheuttaneet raja-arvoja ylittäviä huippujännitteitä tutkituilla laitekokoon-panoilla. Myös lämpötilannousu oli maltillista tai jopa vähäistä taajuusmuuttajasta mitatuilla komponenteilla. Moottorisäätö havaittiin toimintakykyiseksi pidemmilläkin moottorikaape-leilla, tosin moottorin vääntömomentti heikkeni moottorikaapelien pituutta kasvatettaessa. Virranmittaus toimi hyvin myös pitkillä kaapeleilla, tuottaen vikalaukaisun kaikissa tehdyissä oikosulkutilanteissa. Moottorin ja taajuusmuuttajan melutaso nousivat moottorikaapelien pi-tuutta kasvatettaessa, vaikkakin moottorin käynti oli tasaista ja katkotonta Moottorikaapelin pituutta voidaan kasvattaa 325 metriin kaikissa tutkituissa laitteissa ilman, että mikään tutkittu ominaisuus vielä olennaisesti heikkenisi. Vielä 525 metrin moottorikaape-leita on mahdollista käyttää, mutta tällöin vääntömomentin tuotto on jo heikompaa.

Elever syns på nätet : multimodala texter och autentiska mottagare

This study is based on the notion that all students are likely to have a computer of some kind as their primary tool at school within a few years. The overall aim is to contribute to the knowledge of what this development of computer-assisted multimodal text production and communication on and over the net may entail in a school context. The study has an abductive approach drawing on theory from Media and Communication studies and from Pedagogy - particularly on media peda-gogy, multimodality, storytelling, conversation research and deliberative democracy – and is based on a DBR project in three schools. The empirical data are retrieved from four school classes, school years 4 and 5, with good access to computers and digital cameras. The classes have used the class blogs to tell the blog visitors about their school work and Skype to communicate with other classes in Sweden and Tanzania. A variety of research methods was employed: content analysis of texts, observations with field notes and camera documentation, interviews with individual students, group interviews with teachers and students, and a small survey. The study is essentially qualitative, focusing on students’ different perceptions. A small quantitative study was conducted to determine if any factors and variables could be linked to each other and to enable comparisons of the surveyed group with other research results. The results suggest that more computers at school offer more opportunities for real-life assignments and the chance to secure an authentic audience to the students’ production; primarily the students’ parents and relatives, students in the same class and at other schools. A theoretical analysis model to determine the degree of reality and authenticity in various school assignments was developed. The results also indicate that having access to cameras for documenting various events in the classes and to an authentic audience can create new opportunities for storytelling that have not been practiced previously at school. The documentary photo invites a viewer into the present tense of the image and the location where the picture was taken, whoever took the picture. It is used by the students and here too, a model has been developed to describe this relationship. The study also focuses on the freedom of expression and democracy. One of the more unexpected findings is that the students in the study did not see that they can influence other people’s perceptions or change various power structures through communication on the web, neither in nor outside of school.

La traduzione della letteratura per l’infanzia dal finlandese all’italiano: l’esempio degli albi illustrati di Mauri Kunnas

Despite the increasing number of research on translating for children, no study has so far taken into consideration the translations of children’s literature from Finnish into Italian. This dissertation sets out to fill this gap with a comparative study of Finnish picturebooks and their translations into Italian. Besides being the first research in the field analysing the shifts between these two systems, the study thoroughly investigates the characteristics of the translation process of picturebooks. The works chosen as case study are the Finnish picturebooks by Mauri Kunnas and their Italian translations from the period 1979-2009 because they are characterized by a high number of linguistic and cultural complexities which challenge translators’ skills and knowledge. The dissertation establishes whether and how culture-specific elements (anthroponyms, toponyms, food and allusions) and the word-image interaction have a significant impact on the quality and the nature of the target works, and also whether these aspects are still consistent after the translation and the adaptation process to the target system. Since picturebooks are multimodal texts whose message is produced by both the verbal and the visual, it has been necessary to use a multimodal comparative analysis. Such a descriptive comparative study has allowed me to describe the textual and cultural manipulations undergone by Kunnas’s picturebooks translated into Italian. Indeed, it has helped to identify what kind of shifts occur when cultural specific elements are transferred from the source system to the target one, to determine the most frequent translation strategies used to ensure a higher degree of readability, and to establish whether particular translation choices have contributed to modify the word-image interaction. The results of the multimodal comparative analysis have shown that Italian translators have been deeply influenced by the preponderance of the illustrations and for this reason they have often verbalised the visual and added information not originally contained in the source written text. Moreover, the findings of the analysis together with the interviews to the Italian translator and publishing house have also demonstrated that the latter aimed at producing works “good for the child” – and at the same time “good for the adult” – and at minimizing Finnish cultural specificity, even to the detriment of the aesthetic nature of the original picturebooks.

Managing Customer Issues through a Support Channel Network

The importance of after-sales service or service in general can be seen and experienced by customers every day with industrial as well as other non-industrial services or products. This dissertation, drawing on theory and experience, focuses on practical engineering implications, specifically the management of customer issues in the after-sales phase in the mobile phone arena. The main objective of this doctoral dissertation is to investigate customer after-sales issue management, specifically regarding mobile phones. The case studies focus on issue resolution time and the issue of corrective actions. This dissertation consists of a main body and four peer-reviewed journal articles and one manuscript currently under review by a peer-reviewed journal. The main body of this dissertation examines the elements of customer satisfaction, loyalty, and retention with respect to corrective actions to address customer issues and issue resolution time through literature and empirical studies. The five independent works are case studies supporting the thesis research questions. This study examines four questions: 1) What are the factors affecting corrective actions for customers? 2) How can customer issue resolution time be controlled? 3) What are the factors affecting processes in the service chain? and 4) How can communication be measured in a service chain? In this work, both quantitative and qualitative analysis methods are used. The main body of the thesis reviews the literature regarding the elements that bridge the five case studies. The case studies of the articles and surveys lean more toward the methodology of critical positivism and then apply the interpretive approach in interpreting the results. The case study articles employ various statistical methods to analyze and to interpret the empirical and survey data. The statistical methods were used to create a model that is useful for significantly optimizing issue resolution time. Moreover, it was found that samples for verifying issues provided by the customer neither improve the perceived quality of corrective actions nor the perceived quality of issue resolution time. The term “service” in this work is limited to the technical services that are provided by product manufacturers and after-sales authorized service vendors. On the basis of this research work, it has been observed that corrective actions and issue resolution time are associated with customer satisfaction and hence, according to induction theory, to customer loyalty and retention. This thesis utilizes knowledge of marketing and customer relationships to contribute to the existing body of knowledge concerning information and communication technology for after-sales service recovery of mobile terminals. The established models in the thesis contribute to the existing knowledge of the after-sales process of dealing with customer issues in the field of mobile phones. The findings suggest that process managers could focus more on communication and training provided to the staff as new technology evolves rapidly. The study also suggest the managers formulate strategies for how customers can be kept informed on a regular basis of the status of issues that have been escalated for corrective action. The findings also lay the foundation for the comprehensive objective to control the entire product development process, starting with conceptualization. This implies that robust design should be applied to the new products so that problems affecting customer service quality are not repeated. The objective will be achieved when the entire service chain from product development to the final user can be modeled and this model can be used to support the organization at all levels.

Power semiconductor nonlinearities in active du/dt output filtering

This doctoral thesis introduces an improved control principle for active du/dt output filtering in variable-speed AC drives, together with performance comparisons with previous filtering methods. The effects of power semiconductor nonlinearities on the output filtering performance are investigated. The nonlinearities include the timing deviation and the voltage pulse waveform distortion in the variable-speed AC drive output bridge. Active du/dt output filtering (ADUDT) is a method to mitigate motor overvoltages in variable-speed AC drives with long motor cables. It is a quite recent addition to the du/dt reduction methods available. This thesis improves on the existing control method for the filter, and concentrates on the lowvoltage (below 1 kV AC) two-level voltage-source inverter implementation of the method. The ADUDT uses narrow voltage pulses having a duration in the order of a microsecond from an IGBT (insulated gate bipolar transistor) inverter to control the output voltage of a tuned LC filter circuit. The filter output voltage has thus increased slope transition times at the rising and falling edges, with an opportunity of no overshoot. The effect of the longer slope transition times is a reduction in the du/dt of the voltage fed to the motor cable. Lower du/dt values result in a reduction in the overvoltage effects on the motor terminals. Compared with traditional output filtering methods to accomplish this task, the active du/dt filtering provides lower inductance values and a smaller physical size of the filter itself. The filter circuit weight can also be reduced. However, the power semiconductor nonlinearities skew the filter control pulse pattern, resulting in control deviation. This deviation introduces unwanted overshoot and resonance in the filter. The controlmethod proposed in this thesis is able to directly compensate for the dead time-induced zero-current clamping (ZCC) effect in the pulse pattern. It gives more flexibility to the pattern structure, which could help in the timing deviation compensation design. Previous studies have shown that when a motor load current flows in the filter circuit and the inverter, the phase leg blanking times distort the voltage pulse sequence fed to the filter input. These blanking times are caused by excessively large dead time values between the IGBT control pulses. Moreover, the various switching timing distortions, present in realworld electronics when operating with a microsecond timescale, bring additional skew to the control. Left uncompensated, this results in distortion of the filter input voltage and a filter self-induced overvoltage in the form of an overshoot. This overshoot adds to the voltage appearing at the motor terminals, thus increasing the transient voltage amplitude at the motor. This doctoral thesis investigates the magnitude of such timing deviation effects. If the motor load current is left uncompensated in the control, the filter output voltage can overshoot up to double the input voltage amplitude. IGBT nonlinearities were observed to cause a smaller overshoot, in the order of 30%. This thesis introduces an improved ADUDT control method that is able to compensate for phase leg blanking times, giving flexibility to the pulse pattern structure and dead times. The control method is still sensitive to timing deviations, and their effect is investigated. A simple approach of using a fixed delay compensation value was tried in the test setup measurements. The ADUDT method with the new control algorithm was found to work in an actual motor drive application. Judging by the simulation results, with the delay compensation, the method should ultimately enable an output voltage performance and a du/dt reduction that are free from residual overshoot effects. The proposed control algorithm is not strictly required for successful ADUDT operation: It is possible to precalculate the pulse patterns by iteration and then for instance store them into a look-up table inside the control electronics. Rather, the newly developed control method is a mathematical tool for solving the ADUDT control pulses. It does not contain the timing deviation compensation (from the logic-level command to the phase leg output voltage), and as such is not able to remove the timing deviation effects that cause error and overshoot in the filter. When the timing deviation compensation has to be tuned-in in the control pattern, the precalculated iteration method could prove simpler and equally good (or even better) compared with the mathematical solution with a separate timing compensation module. One of the key findings in this thesis is the conclusion that the correctness of the pulse pattern structure, in the sense of ZCC and predicted pulse timings, cannot be separated from the timing deviations. The usefulness of the correctly calculated pattern is reduced by the voltage edge timing errors. The doctoral thesis provides an introductory background chapter on variable-speed AC drives and the problem of motor overvoltages and takes a look at traditional solutions for overvoltage mitigation. Previous results related to the active du/dt filtering are discussed. The basic operation principle and design of the filter have been studied previously. The effect of load current in the filter and the basic idea of compensation have been presented in the past. However, there was no direct way of including the dead time in the control (except for solving the pulse pattern manually by iteration), and the magnitude of nonlinearity effects had not been investigated. The enhanced control principle with the dead time handling capability and a case study of the test setup timing deviations are the main contributions of this doctoral thesis. The simulation and experimental setup results show that the proposed control method can be used in an actual drive. Loss measurements and a comparison of active du/dt output filtering with traditional output filtering methods are also presented in the work. Two different ADUDT filter designs are included, with ferrite core and air core inductors. Other filters included in the tests were a passive du/dtfilter and a passive sine filter. The loss measurements incorporated a silicon carbide diode-equipped IGBT module, and the results show lower losses with these new device technologies. The new control principle was measured in a 43 A load current motor drive system and was able to bring the filter output peak voltage from 980 V (the previous control principle) down to 680 V in a 540 V average DC link voltage variable-speed drive. A 200 m motor cable was used, and the filter losses for the active du/dt methods were 111W–126 W versus 184 W for the passive du/dt. In terms of inverter and filter losses, the active du/dt filtering method had a 1.82-fold increase in losses compared with an all-passive traditional du/dt output filter. The filter mass with the active du/dt method was 17% (2.4 kg, air-core inductors) compared with 14 kg of the passive du/dt method filter. Silicon carbide freewheeling diodes were found to reduce the inverter losses in the active du/dt filtering by 18% compared with the same IGBT module with silicon diodes. For a 200 m cable length, the average peak voltage at the motor terminals was 1050 V with no filter, 960 V for the all-passive du/dt filter, and 700 V for the active du/dt filtering applying the new control principle.

Heritage through Fiction: Dracula Tourism in Romania

Heritage and tourism have become inextricably linked. This link can be seen as producing inauthentic and falsified tradition, and it can therefore be seen as a threat to cultural heritage. On the other hand the link can be seen as a positive thing, as something which helps to preserve herit-age, culture and folklore in a changing and globalising world. This dissertation investigates heritage in the context of Dracula Tourism in Romania. Dracula tourism is tourism where tourists visit places connected with either the fictional vampire Dracula or the historical Dracula, a Romanian historical ruler Vlad the Impaler. The main research question of this study is how can Romanian heritage and culture be shown and promoted through a seemingly superficial Dracula tourism which is based on Western popular cul-ture? And is it possible to find Romanian heritage through popular fiction in Dracula tourism? The main sources for this work are based on the fieldwork done by the author in 2010 and 2011 and the web pages of ten Romanian travel agencies that offer Dracula tourism. The stories and images found on the web pages and used by the tour guides form the bulk of the research material. The emphasis and perspective of this research is folkloristic. Critical discourse analysis and multimodal discourse analysis form the main theoretical approach of this dissertation. In addition the research material is approached through intertextuality, folklore process, hybridisation, authenticity and social constructionism. This dissertation aims to offer new perspectives on the research literature concerning tourism and heritage and to offer a folkloristic view of tourism research. It also aims to offer new perspectives to folkloristics in terms of the research on the use of folklore and tradition and offer new perspectives on the use and definition of the concept of authenticity. Although the research subject of this thesis is Dracula tourism in Romania, the findings can be utilised and applied in a larger context and field of research. The key research findings show that heritage can be found within Dracula Tourism in three forms: as defined from above (UNESCO World Heritage Sites), as local heritage and as a form of opposition. The Romanian travel agencies researched in this dissertation use Dracula tourism as a gateway into Romanian history, culture, tradition and heritage. Kulttuuriperintö ja turismi yhdistyvät toisiinsa erottamattomasti. Toisaalta tämän yhteyden on nähty tuottavan epäautenttista ja väärennettyä perinnettä, ja tällöin sen on koettu muodostavan uhan kulttuuriperinnölle. Toisaalta yhteys on mielletty myös positiivisena asiana, sillä sen on nähty toimivan globalisoituvassa maailmassa kulttuuriperintöä, kulttuuria ja kansanperinnettä säilyttävänä tekijänä. Väitöskirjassa tutkitaan sitä, miten kulttuuriperintö ilmenee Dracula-turismissa Romaniassa. Dracula- turismi on turismia, joka liittyy joko fiktiiviseen vampyyrikreivi Draculaan tai historiallisena Draculana tunnettuun romanialaiseen hallitsijaan Vlad Seivästäjään. Väitöskirjan päätutkimuskysymyksenä on, miten romanialaista kulttuuriperintöä ja kulttuuria voidaan tuoda esiin näennäisesti pinnallisen ja länsimaiseen populaarikulttuuriin pohjautuvan Dracula-turismin kautta. Työn päälähteet pohjautuvat tutkijan vuosina 2010 ja 2011 tekemiin kenttätöihin sekä kymmenen Dracula-turismia tarjoavan romanialaisen matkatoimiston WWW-sivustoihin. Internet-sivuilta löytyvät tarinat ja kuvat sekä matkaoppaiden käyttämät tarinat muodostavat tutkimuksen tutkimusaineiston. Tutkimuksen painotus ja näkökulma ovat folkloristisia. Tutkimuksen teoreettinen viitekehys muodostuu kriittisestä diskurssianalyysistä sekä multimodaalisesta diskurssianalyysistä. Näiden lisäksi tutkimusaineistoa analysoidaan intertekstuaalisuuden, folkloreprosessin, hybridisaation, autenttisuuden ja sosiaalisen konstruktion käsitteiden avulla. Väitöskirjatutkimus tarjoaa uusia näkökulmia turismia ja kulttuuriperintöä käsittelevään tutkimukseen sekä tarjoaa matkailun tutkimukseen folkloristisen lisänäkökulman. Folkloristisen tutkimuksen näkökulmasta työn keskiössä ovat perinteen ja folkloren hyödyntäminen sekä autenttisuuden käsitteen määrittely ja käyttö, joihin työssä otetaan kantaa. Vaikka tutkimus käsittelee Dracula-turismia Romaniassa, ovat tutkimustulokset käytettävissä ja sovellettavissa myös laajemmin. Työn keskeiset tutkimustulokset osoittavat, että kulttuuriperintö ilmenee Dracula-turismissa kolmella eri tavalla: ylätasolla kuten esimerkiksi UNESCO:n kohteissa, alatasolla paikallisten ihmisten tai ihmisryhmien määrittelemänä sekä vastustuksen muotona. Väitöskirjassa tutkitut matkatoimistot käyttävät Dracula-turismia ikään kuin porttina romanialaiseen historiaan, kulttuuriin, perinteeseen ja kulttuuriperinteeseen.

Anaesthesia and Pain Management for Use in Orthopaedic Day Surgery

Day surgery has gained a large popularity during the last decades. In Finland, 57% of the elective procedures, and 50% at Turku University Hospital, were already conducted on day basis during 2012. The steady growth of day surgery is mostly due to an increased safety in perioperative care and cost-effectiveness. The development of surgical techniques and anaesthetic methods has advanced the modern day surgery and extended the repertory of the procedures for use in day surgery operations. Day surgery also offers certain benefits like reduced risk for hospital-related infections, stress and confusion. Patient satisfaction, regarding several issues, is high. Most concerns and complaints are related to postoperative pain, nausea and vomiting pain and nausea. Pain can hamper recovery and pain management is a crucial factor for hospital discharge. Appropriate pain treatment is effective, safe, easy and economical. A procedure-specific approach and an individually planned, multimodal analgesia should be the basis of modern pain management. The main aim of this thesis was to evaluate the effectiveness and safety of anaesthetic technique and methods in pain treatment of orthopaedic day case surgery, and following conclusions were made. Unilateral spinal block was achieved using hyperbaric bupivacaine with a small dose of clonidine but clonidine prolonged the block. Continuous subacromial bupivacaine was found to be safe but conferring only moderate efficacy in pain care after shoulder arthroscopy. Transdermal fentanyl, 12 g/h, as part of multimodal analgesia, offered a safe and easy option to pain management in this patient group. However, after forefoot surgery, it did not reduce pain any further. In general, pain scores in all patient groups were low and the need for rescue opioid moderate.