Automatic traffic sign inventory- and condition analysis

This thesis researches automatic traffic sign inventory and condition analysis using machine vision and pattern recognition methods. Automatic traffic sign inventory and condition analysis can be used to more efficient road maintenance, improving the maintenance processes, and to enable intelligent driving systems. Automatic traffic sign detection and classification has been researched before from the viewpoint of self-driving vehicles, driver assistance systems, and the use of signs in mapping services. Machine vision based inventory of traffic signs consists of detection, classification, localization, and condition analysis of traffic signs. The produced machine vision system performance is estimated with three datasets, from which two of have been been collected for this thesis. Based on the experiments almost all traffic signs can be detected, classified, and located and their condition analysed. In future, the inventory system performance has to be verified in challenging conditions and the system has to be pilot tested.

Lecythidaceae Poit. in the Tupé Sustainable Development Reserve, Manaus, Brazil

Lecythidaceae is the family of the Brazil nut, and comprises about 300 species belonging to 17 genera with pantropical distributions. One hundred and twenty-two species belonging to nine genera are distributed throughout Brazil, demonstrating its greatest diversity in the Amazon rainforest where Lecythidaceae is also one of the most abundant families. It is usually difficult to collect fertile material from these trees because of their canopy heights, and species determinations using sterile material can be complex because of their morphological similarities. There have been relatively few studies of this family even though it is one of the most important groups in the Amazon region, and a detailed taxonomic treatment of the species of Lecythidaceae in the Tupé Sustainable Development Reserve was therefore the goal of the present work. Ten species were found, Allantoma lineata (Mart. ex O.Berg) Miers, Bertholletia excelsa Bonpl., Couratari tenuicarpa A.C.Sm., Lecythis poiteaui O. Berg; and six species of Eschweilera, the richest genus. The descriptions and identification keys of the species used 56 characters. The main reproductive characters useful for distinguishing the species were the pubescence of the inflorescence rachis, pedicel length and trichomes presence, floral symmetry, hood type, filament shape, stigma shape, fruit shape and size, and aril type. The most diagnostic vegetative characters were the type and color of the outer bark, inner bark color, midrib prominence, and petiole shape and pubescence.

The requirements of a feasible plastic packaging material for cultured dairy products

The objective of this Master´s Thesis was to conduct a wide scale preliminary survey regarding the package requirements of a cultured dairy package, and to compare the currently used material polystyrene to other suitable packaging materials. Polystyrene has a long history of use in dairy cups, but in recent years its price has increased significantly compared to other common packaging materials. The overall environmental effects of a package and a package material are today a part of designing a sustainable product life cycle. In addition, in certain contexts there has been discussion of the risks posed by styrene polymer for the environment and for humans. These risks are also discussed in this thesis. Polystyrene (PS) is still the most widely used material in dairy cups. In recent years, polypropylene (PP) cups have appeared in increasing numbers on market shelves. This study focuses on the differences of the suitable polymers and examines the suitability of alternative “suitable” polymers with regards to dairy packaging. Aside from focusing on the cup manufacturer, this thesis also examines its subject matter from the viewpoint of the dairy customer, as well as observing the concrete implications of material changes in the overall value chain. It was known in advance that material permeability would be one of the determining factors and that gas transmission testing would be a significant part of the thesis. Mechanical tests were the second part of the testing process, providing information regarding package strength and protectiveness during the package’s life cycle. Production efficiency, along with uninterrupted stable production, was another important factor that was taken into consideration. These two issues are sometimes neglected in similar contexts due to their self-evident nature. In addition, materials used in production may have a surprising significance to the production and efficiency. Consistent high quality is also partly based on material selection. All of the aforementioned factors have been documented and the results have been analyzed by the development team at Coveris Rigid Finland. Coveris is now calculating the total finance effects and capacities should the material changes be implemented in practice. There are many factors in favor of switching to polypropylene at the moment. The overall production costs, as well as the environmental effects of resin production are the primary influences for said switch from the converters’ perspective.

Johtamisen, kommunikaation ja organisaation oikeudenmukaisuuden vaikutus sitoutumiseen ICT-alan organisaatiossa ja sitouttamisen keinot

Organisaatioon sitoutuminen on organisaation kannalta kriittinen ilmiö. Sen nähdään vähentävän henkilöstön vaihtuvuutta ja aineettoman pääoman katoa organisaatiosta. Tässä työssä tutkittiin erään valtionhallinnon laitoksen henkilöstön organisaatioon sitoutumisen tasoa ja siihen vaikuttavia tekijöitä. Tutkimuksessa organisaatioon sitoutumista tarkasteltiin johtamisen, kommunikaation ja organisaation oikeudenmukaisuuden näkökulmasta. Kaikkia tutkittavia tekijöitä tarkasteltiin sekä globaalista, että lokaalista näkökulmasta. Tutkimuksessa havaittiin ainoastaan globaalin tason vaikuttajilla olevan merkittävä vaikutus organisaatioon sitoutumisessa, ainoana poikkeuksena lokaali oikeudenmukaisuus. Organisaatioon sitoutumisen havaittiin perustuvan sitoutumisen tunneperäiseen elementtiin, velvollisuudentunnon ja jatkuvuusperäisen komponentin jäädessä heikommiksi. Merkittävä havainto oli tutkimuksissa havaittujen demografisten vaikuttajien korreloivan joko ainoastaan heikosti tai ei lainkaan organisaatioon sitoutumiseen. Tutkimuksessa tarkasteltiin myös kriittisten asiantuntijoiden ja perusasiantuntijoiden sitoutumisen eroja. Kriittisten asiantuntijoiden havaittiin olevan heikommin sitoutuneita ja sitoutumisen tekijöiden globaalin tason vaikutuksen olevan merkittävästi vahvempi heihin, kuin perusasiantuntijoihin. Perusasiantuntijoiden havaittiin kiinnittyvän lokaaleihin tekijöihin, joilla on heikompi, tai ei juurikaan vaikutusta organisaatioon sitoutumiseen. Vaikuttavimmiksi organisaatioon sitoutumista vahvistaviksi tekijöiksi tunnistettiin johtamisen ja kommunikaation laadukkuus, ja organisaation osoittama oikeudenmukaisuus.

Kuukausiraportoinnin kehittäminen case-organisaatiossa

Tämän Pro Gradu tutkielman aiheena on tutkia kuukausiraportoinnin kehittämistä case-organisaatiossa. Työssä tutkitaan, millä tasolla jatkuvan talousraportoinnin tulisi olla, jotta se palvelisi mahdollisimman tehokkaasti sen pääkäyttötarkoitusta eli toiminnan johtamista. Tutkimuksen tavoitteena on antaa esitys hyvästä rapor-tointimallista. Tutkimus on kvalitatiivinen tapaustutkimus. Tutkimuksen empiirinen aineisto kerättiin puolistrukturoiduilla haastatteluilla sekä havainnoin avulla. Tutkimuksen teoreettinen viitekehys käsittelee New Public managementia, uutta julkisjohtamista, sekä sen mukana julkiselle sektorille tullutta tulosjohtamista. New Public Management –suuntaus on tuonut yksityiseltä sektorilta omaksuttuja toimintatapoja julkisen hallinnon organisaatioihin ja toimintamalleihin. Teoria-osuudessa tarkastellaan myös teoriaa johdon talousraportoinnista. Tutkimuksen johtopäätöksenä todetaan että kohdeorganisaation nykyinen rapor-tointi ei vastaa täysin johdon raportointitarpeita ja että raportointiprosessissa olisi kehitettävää. Tärkeimpänä kehityskohteena olisi raportoinnin laajentaminen si-ten, että toiminnasta tuotaisiin tietoja osaksi jatkuvaa raportointia. Tämä tutkimus esittää toimenpide-ehdotukset sekä aikataulun havaittujen haasteiden korjaa-miseksi.

Liitoksen symmetrisyyden vaikutus lovijännitykseen hitsin rajaviivalla

Tässä kandidaatintyössä selvitettiin symmetrisyyden vaikutus hitsin rajaviivalle syntyvään lovijännitykseen. Tutkittavina liitoksina olivat poikittainen ripaliitos ja päällekkäisliitos. Nykyiset IIW:n väsymismitoitussuositukset eivät anna ohjeistuksia siitä, miten symmetrisyys tulisi huomoida väsymiskestävyyttä arvioitaessa. Laboratoriokokeet ovat kuitenkin osoittaneet, että epäsymmetrisen liitoksen väsymislujuus on parempi kuin symmetrisen liitoksen.Geometrialtaan erilaisia liitoksia tutkittiin FE-analyysin avulla käyttäen FEMAP/NxNastran-ohjelmistoja. Tutkimuksissa havaittiin, että symmetrisyydellä on suuri vaikutus lovijännityksen arvoon. Vetokuormituksessa epäsymmetrisen liitoksen lovijännitys voi olla jopa puolta pienempi kuin vastaavan symmetrisen liitoksen. Taivutuskuormituksessa tilanne on päinvastainen: epäsymmetrisen liitoksen lovijännitys oli suurimmillaan 1,5-kertainen suhteessa symmetriseen liitokseen.

Utilization of AMI-Technology in a Multilayered Demand Response Service Environment

This thesis studied the performance of Advanced metering infrastructure systems in a challenging Demand Response environment. The aim was to find out what kind of challenges and bottlenecks could be met when utilizing AMI-systems in challenging Demand Response tasks. To find out the challenges and bottlenecks, a multilayered demand response service concept was formed. The service consists of seven different market layers which consist of Nordic electricity market and the reserve markets of Fingrid. In the simulations the AMI-systems were benchmarked against these seven market layers. It was found out, that the current generation AMI-systems were capable of delivering Demand Response on the most challenging market layers, when observed from time critical viewpoint. Additionally, it was found out, that to enable wide scale Demand Response there are three major challenges to be acknowledged. The challenges hindering the utilization of wide scale Demand Response were related to poor standardization of the systems in use, possible problems in data connectivity solutions and the current electricity market regulation model.

Modeling the pressure inactivation dynamics of Escherichia coli

Escherichia coli, as a model microorganism, was treated in phosphate-buffered saline under high hydrostatic pressure between 100 and 300 MPa, and the inactivation dynamics was investigated from the viewpoint of predictive microbiology. Inactivation data were curve fitted by typical predictive models: logistic, Gompertz and Weibull functions. Weibull function described the inactivation curve the best. Two parameters of Weibull function were calculated for each holding pressure and their dependence on holding pressure was obtained by interpolation. With the interpolated parameters, inactivation curves were simulated and compared with the experimental data sets.

Integrating corporate social responsibility into business in Finnish consumer goods companies

The motives for this study originated from the notion that surprisingly little academic literature is found on actually managing and putting corporate social responsibility (CSR) into practice, in comparison with the definitions and frameworks of the concept itself. Regardless of the author, CSR has been considered consisting of three dimensions: economic, social and environmental. The question behind the three dimensions has always been whether socially and environmentally responsible behavior can lead to increased economic performance and improve the competitiveness of a company. Most of the current CSR development has related to the quantification of environmental and social performance in order to review these along with the established financial key ratios, which are based on the law and the reporting obligation of the companies. However, the previous research has mainly focused on US companies whereas studies with a European viewpoint, let alone Nordic, have been mostly lacking. Furthermore, it has been discovered recently that the integration of corporate responsibility into business is identified as the greatest challenge in CSR management in Finnish large companies. Therefore the integration of CSR into business in Finnish consumer goods companies provided an interesting, topical and somewhat obscure purpose for this study. This was further divided into three research questions concerning the reasons for CSR engagement, the role of the stakeholders and the practice of corporate responsibility. This study did not aim to build a new theory; instead an explorative viewpoint was regarded more appropriate. Accordingly, qualitative research approach and case study design were adopted in the study. Semi-structured theme interviews were used as a primary data collection method and complemented with secondary data such as websites, responsibility reports and another recent CSR study. There were four Finnish managers as interviewees of whom three presented companies and one non-profit organization. The results were somewhat convergent but differences arose as a result of the companies being at different stages as regards corporate responsibility. However, this provided only more insight into the implementation of CSR. The voluntary CSR initiatives, responsibility reporting, stakeholders and CSR management were identified as the most important viewpoints on the practical side of CSR, besides a key requirement for the integration of CSR into business to be credible was found to be a favorable management attitude. Based on the findings of this study it was admitted that giving concrete advice on CSR management is really a challenge and there is no one generally accepted and right manner to integrate corporate responsibility successfully into business.

Artificial reflecting structures based on metamaterials

This thesis studies metamaterial-inspired mirrors which provide the most general control over the amplitude and phase of the reflected wavefront. The goal is to explore practical possibilities in designing fully reflective electromagnetic structures with full control over reflection phase. The first part of the thesis describes a planar focusing metamirror with the focal distance less than the operating wavelength. Its practical applicability from the viewpoint of aberrations when the incident angle deviates from the normal one is verified numerically and experimentally. The results indicate that the proposed focusing metamirror can be efficiently employed in many different applications due to its advantages over other conventional mirrors. In the second part of the thesis a new theoretical concept of reflecting metasurface operation is introduced based on Huygens’ principle. This concept in contrast to known approaches takes into account all the requirements of perfect metamirror operation. The theory shows a route to improve the previously proposed metamirrors through tilting the individual inclusions of the structure at a chosen angle from normal. It is numerically tested and the results demonstrate improvements over the previous design.

Gearing Towards Omnichannel Grocery Retail Through Business Model Innovation

Technological innovations and the advent of digitalization have led retail business into one of its biggest transformations of all time. Consumer behaviour has changed rapidly and the customers are ever more powerful, demanding, tech-savvy and moving on various plat-forms. These attributes will continue to drive the development and robustly restructure the architecture of value creation in the retail business. The largest retail category, grocery yet awaits for a real disruption, but the signals for major change are already on the horizon. The first wave of online grocery retail was introduced in the mid 1990’s and it throve until millennium. Many overreactions, heavy investments and the burst IT-bubble almost stag-nated the whole industry for a long period of time. The second wave started with a venge-ance around 2010. Some research was carried out during the first wave from a single-viewpoint of online grocery retail, but without a comprehensive approach to online-offline business model integration. Now the accelerating growth of e-business has initiated an increased interest to examine the transformation from traditional business models towards e-business models and their integration on the companies’ traditional business models. This research strove to examine how can we recognize and analyze how digitalization and online channels are affecting the business models of grocery retail, by using business mod-el canvas as an analysis tool. Furthermore business model innovation and omnichannel retail were presented and suggested as potential solutions for these changes. 21 experts in online grocery industry were being interviewed. The thoughts of the informants were being qualitatively analysed by using an analysis tool called the business model canvas. The aim of this research was to portray a holistic view on the Omnichannel grocery retail business model, and the value chain, in which the case company Arina along with its partners are operating. The key conclusions exhibited that online grocery retail business model is not an alterna-tive model nor a substitute for the traditional grocery retail business model, though all of the business model elements are to some extent affected by it, but rather a complementary business model that should be integrated into the prevailing, conventional grocery retail business model. A set of business model elements, such as value proposition and distribu-tion channels were recognized as the most important ones and sources of innovation within these components were being illustrated. Segments for online grocery retail were empiri-cally established as polarized niche markets in contrast of the segmented mass-market of the conventional grocery retail. Business model innovation was proven to be a considera-ble method and a conceptual framework, by which to come across with new value proposi-tions that create competitive advantage for the company in the contemporary, changing business environment. Arina as a retailer can be considered as a industry model innovator, since it has initiated an entire industry in its market area, where other players have later on embarked on, and in which the contributors of the value chain, such as Posti depend on it to a great extent. Consumer behaviour clearly affects and appears everywhere in the digi-talized grocery trade and it drives customers to multiple platforms where retailers need to be present. Omnichannel retail business model was suggested to be the solution, in which the new technologies are being utilized, contemporary consumer behaviour is embedded in decision-making and all of the segments and their value propositions are being served seamlessly across the channels.