On the numerical integration of rigid body nonlinear dynamics in presence of parameters singularities

One of the main complexities in the simulation of the nonlinear dynamics of rigid bodies consists in describing properly the finite rotations that they may undergo. It is well known that, to avoid singularities in the representation of the SO(3) rotation group, at least four parameters must be used. However, it is computationally expensive to use a four-parameters representation since, as only three of the parameters are independent, one needs to introduce constraint equations in the model, leading to differential-algebraic equations instead of ordinary differential ones. Three-parameter representations are numerically more efficient. Therefore, the objective of this paper is to evaluate numerically the influence of the parametrization and its singularities on the simulation of the dynamics of a rigid body. This is done through the analysis of a heavy top with a fixed point, using two three-parameter systems, Euler's angles and rotation vector. Theoretical results were used to guide the numerical simulation and to assure that all possible cases were analyzed. The two parametrizations were compared using several integrators. The results show that Euler's angles lead to faster integration compared to the rotation vector. An Euler's angles singular case, where representation approaches a theoretical singular point, was analyzed in detail. It is shown that on the contrary of what may be expected, 1) the numerical integration is very efficient, even more than for any other case, and 2) in spite of the uncertainty on the Euler's angles themselves, the body motion is well represented.

Petri Net approach for modelling system integration in intelligent buildings

In this paper, a Petri Net approach is introduced for modelling and simulation of control strategies in Intelligent Building. In this context, it is claimed that integration with other building systems can be achieved in a more systematic way considering a mechatronic approach (i.e. multidisciplinary concepts applied to the development of systems). The case study is the Ambulatory Building of Medical School Hospital of University of São Paulo. Particularly, the developed methodology is applied to the elevator system and to the HVAC (Heating, Ventilation and Air Conditioning) system. It is shown that using this approach, the control systems could be integrated, improving performance.

Tunneälykäs myynnin johtaminen: empiirinen tutkimus b2b-myynnin ammattilaisten johtamisesta.

Tutkimuksen kohteena on suomalainen yritysmyynnin johtaminen ja tunneälykkyyden rooli myynnin esimiestyössä. Tarkoituksena oli selvittää, miten tunneälykkäitä b2b-myynnin esimiehet alaistensa mielestä ovat. Kiinnostuksen kohteena olivat myös erilaisten taustamuuttujien (ikä, sukupuoli, koulutus, jne.) merkitys alaisten kokemalle esimiehen tunneälykkyydelle. Tutkimus tehtiin yhteistyössä Suomen Myynnin ja Markkinoinnin ammattilaiset (SMKJ) ry:n kanssa. Tutkimus toteutettiin kvantitatiivisena tutkimuksena ja aineisto kerättiin internetkyselyllä. Vastaajat olivat SMKJ:n jäseniä eri puolelta Suomea eri toimialoilta ja vastauksia saatiin kaikkiaan 176 henkilöltä. Tutkimuslomakkeessa kysyttiin vastaajan näkemystä esimiehen tunneälykkyydestä 18 eri tunneälytaidon osalta Likertin asteikolla. Sen lisäksi kysyttiin erilaisia taustatietoja ja esimerkiksi sitä, miten kauan oli työskennellyt nykyisen esimiehen alaisuudessa ja kuinka kauan oli ollut työelämässä jo aiemmin. Aineisto analysoitiin faktori- ja regressioanalyyseillä. Tunneälytaitojen osalta parhaimpina nousivat esille itseluottamus, palvelualttius ja optimismi. Heikoimpia esimiesten tunneälytaitoja olivat vastaajien mielestä kyky kehittää toisia, ryhmä- ja yhteistyötaito sekä omien tunteiden tiedostaminen. Sukupuolen vaikutus näkyi empaattisuuden kohdalla niin, että naisesimiehet olivat jonkin verran miehiä empaattisempia. Tunneälykkäimpiä esimiehiä olivat 35 – 44 -vuotiaat. Koulutuksen osalta ammattikorkeakoulututkinnon suorittaneet myynnin johtajat olivat tulosten mukaan tunneälykkäimpiä. Suoritetun regressioanalyysin mukaan samalla paikkakunnalla toimiminen ja esimies-alaissuhteen kesto vaikuttivat positiivisesti esimiehen tunneälykkyyden kokemiseen. Tutkimuksessa nousi esille tarve lisätä myynnin esimiesten koulutuksiin kehittämiseen ja valmentamiseen liittyviä osioita. Empatian kokemisen suhteen vastausten hajonta oli suurta. Empatian tasoa pitäisi pystyä harmonisoimaan esimiesten keskuudessa, koska empaattinen johtaminen korreloi positiivisesti yrityksen taloudellisen tuloksen kanssa.

Integration of learning supportive applications into the development of the e-portfolio construction process

The portfolio as a means of demonstrating personal skills has lately been gaining prominence among technology students. This is partially due to the introduction of electronic portfolios, or e-portfolios. As platforms for e-portfolio management with different approaches have been introduced, the learning cycle, traditional portfolio pedagogy, and learner centricity have sometimes been forgotten, and as a result, the tools have been used for the most part as data depositories. The purpose of this thesis is to show how the construction of e-portfolios of IT students can be supported by institutions through the usage of different tools that relate to study advising, teaching, and learning. The construction process is presented as a cycle based on learning theories. Actions related to the various phases of the e-portfolio construction process are supported by the implementation of software applications. To maximize learner-centricity and minimize the intervention of the institution, the evaluated and controlled actions for these practices can be separated from the e-portfolios, leaving the construction of the e-portfolio to students. The main contributions of this thesis are the implemented applications, which can be considered to support the e-portfolio construction by assisting in planning, organizing, and reflecting activities. Eventually, this supports the students in their construction of better and more extensive e-portfolios. The implemented tools include 1) JobSkillSearcher to help students’ recognition of the demands of the ICT industry regarding skills, 2) WebTUTOR to support students’ personal study planning, 3) Learning Styles to determine students' learning styles, and 4) MyPeerReview to provide a platform on which to carry out anonymous peer review processes in courses. The most visible outcome concerning the e-portfolio is its representation, meaning that one can use it to demonstrate personal achievements at the time of seeking a job and gaining employment. Testing the tools and the selected open-source e-portfolio application indicates that the degree of richness of e-portfolio content can be increased by using the implemented applications.

A Framework for IT Service Management Integration

The objective of this Master’s Thesis is to find out best practices for IT service management integration. Integration in this context means process integration between an IT organization and an integration partner. For observing the objective, two different perspectives are assigned: process and technology. The thesis consists of theory, framework, implementation, and analysis parts. The first part introduces common methodology of IT service management and enterprise integration. The second part presents an integration framework for ITSM integration. The third part illustrates how the framework is used and the last part analyses the framework. The major results of this thesis were the framework architecture, the framework tools, the implementation model, the testing model, and the deployment model for ITSM integration. As a fundamental best practice, the framework contained a four-division structure between architecture, process, data, and technology. This architecture provides a baseline for ITSM integration design, implementation and testing.

Market integration, return and volatility dynamics; empirical evidence from African stock markets

Frontier and Emerging economies have implemented policies with the objective of liberalizing their equity markets. Equity market liberalization opens the domestic equity market to foreign investors and as well paves the way for domestic investors to invest in foreign equity securities. Among other things, equity market liberalization results in diversification benefits. Moreover, equity market liberalization leads to low cost of equity capital resulting from the lower rate of return by investors. Additionally, foreign and local investors share any potential risks. Liberalized equity markets also become liquid considering that there are more investors to trade. Equity market liberalization results in financial integration which explains the movement of two markets. In crisis period, increased volatility and co-movement between two markets may result in what is termed contagion effects. In Africa, major moves toward financial liberalization generally started in the late 1980s with South Africa as the pioneer. Over the years, researchers have studied the impact of financial liberalization on Africa’s economic development with diverse results; some being positive, others negative and still others being mixed. The objective of this study is to establish whether African stock-markets are integrated into the United States (US) and World market. Furthermore, the study helps to see if there are international linkages between the Africa, US and the world markets. A Bivariate- VAR- GARCH- BEKK model is employed in the study. In the study, the effect of thin trading is removed through series of econometric data purification. This is because thin trading, also known as non-trading or inconsistency of trading, is a main feature of African markets and may trigger inconsistency and biased results. The study confirmed the widely established results that the South Africa and Egypt stock markets are highly integrated with the US and World market. Interestingly, the study adds to knowledge in this research area by establishing the fact that Kenya is very integrated with the US and World markets and that it receives and exports past innovations as well as shocks to and from the US and World market.

Integration of Torrefaction with Steam Power Plant

Torrefaction is one of the pretreatment technologies to enhance the fuel characteristics of biomass. The efficient and continuous operation of a torrefaction reactor, in the commercial scale, demands a secure biomass supply, in addition to adequate source of heat. Biorefinery plants or biomass-fuelled steam power plants have the potential to integrate with the torrefaction reactor to exchange heat and mass, using available infrastructure and energy sources. The technical feasibility of this integration is examined in this study. A new model for the torrefaction process is introduced and verified by the available experimental data. The torrefaction model is then integrated in different steam power plants to simulate possible mass and energy exchange between the reactor and the plants. The performance of the integrated plant is investigated for different configurations and the results are compared.

Brand Identity and Image in B2B Factory Automation Context

The goal of this thesis is to study how a solution-oriented business-to-business company can utilize its brand as a strategic asset by using the concepts of brand identity and brand image. The study analyses the intended brand message (identity) contrasting it with the customer perceptions (image) to reveal points of parity and congruence. The study uses a case company as an example and discusses the benefits of brand management as well. Internally, brands can be studied by performing a set of interviews amongst top and middle management. The interviews need to consider the various elements of branding from associations to differentiation and value creation. Customers’ perceptions can be reliably studied via online survey designed to compare the intended brand message with customers’ experiences. From the perspective of industrial management the incentive for brand development lies in both monetary and managerial benefits. In literature the four essential benefits of B2B branding are risk dilution, efficiency of communications, strategic direction and price premiums. As a result, suggestive models for brand identity and image were devised and compared. The Case Company perceives itself as a technically oriented open-integrator, with a strong focus on reliability and customer service. Customers agree with the picture in general, but there are some points of parity as well: they are quite satisfied with the company and perceive it as reliable and providing the promised value. The problematic areas revolve around customer interaction and maintaining the leadership position. The results confirm previous findings in B2B branding theory, where the reliability and credibility of the supplier are in major role. The results also suggest a holistic, corporate approach on branding.

Integration of sunflower (Helianthus annuus) residues with a pre-plant herbicide enhances weed suppression in broad bean (Vicia faba)

Field trial was conducted with the aim of utilizing allelopathic crop residues to reduce the use of synthetic herbicides in broad bean (Vicia faba) fields. Sunflower residue at 600 and 1,400 g m-2 and Treflan (trifluralin) at 50, 75 and 100% of recommended dose were incorporated into the soil alone or in combination with each other. Untreated plots were maintained as a control. Herbicide application in plots amended with sunflower residue had the least total weed count and biomass, which was even better than herbicide used alone. Integration of recommended dose of Treflan with sunflower residue at 1,400 g m-² produced maximum (987.5 g m-2) aboveground biomass of broad bean, which was 74 and 36% higher than control and recommended herbicide dose applied alone, respectively. Combination of herbicide and sunflower residue appeared to better enhance pod number and yield per unit area than herbicide alone. Application of 50% dose of Treflan in plots amended with sunflower residue resulted in similar yield advantage as was noticed with 100% herbicide dose. Chromatographic analysis of residue-infested field soil indicated the presence of several phytotoxic compounds of phenolic nature. Periodic data revealed that maximum suppression in weed density and dry weight synchronized with peak values of phytotoxins observed 4 weeks after incorporation of sunflower residues. Integration of sunflower residues with lower herbicide rates can produce effective weed suppression without compromising yield as a feasible and environmentally sound approach in broad bean fields.

Ympäristömarkkinointi kilpailuedun lähteenä B2B-yrityksissä - Case Outotec

Tutkielman tarkoituksena on tutkia, miten B2B-yritykset kokevat saavansa kilpailuetua ympäristömarkkinoinnilla. Ympäristömarkkinointi käsitetään keinona yrityksen ympäristölähtöisyyden toteuttamiseen sekä sisäisesti, organisaationalisiin prosesseihin ja kulttuuriin, että ulkoisesti, markkinointimixin eri toimenpiteisiin ulottuvana strategiana. Ympäristömarkkinoinnin vaikutusta kustannus- ja erilaistamisetujen syntymiseen tarkastellaan teoriakirjallisuuden lisäksi Outotec-yhtiön kautta.

A Survey about Integration of Journal Systems with Repositories in Brazil

Poster at Open Repositories 2014, Helsinki, Finland, June 9-13, 2014

Integration of JINR Information Resources

Presentation at Open Repositories 2014, Helsinki, Finland, June 9-13, 2014

Preparing for CRIS: Challenges and Opportunities for Systems Integration at Finnish Universities

Poster at Open Repositories 2014, Helsinki, Finland, June 9-13, 2014