Requirements management process

Vaatimustenhallinnan alue on hyvin kompleksinen. Sen terminologia on moninaista ja samat termit voivat tarkoittaa eri asioita eri ihmisille. Tämän työn tarkoituksena on selkeyttää vaatimustenhallinnan aluetta. Se vastaa kysymyksiin kuten, mitä vaatimustenhallinta on ja miten sitä voidaan tehdä. Työ keskittyy vaatimusten analysoinnin ja validoinnin alueisiin, joten tältä osin se vastaa myös tarkempiin kysymyksiin kuten, miten koottujen vaatimusten jäljitettävyyttä, dokumentointia, analysointia ja validointia voidaan tehdä. Tämän työn kautta vaatimustenhallinta voidaan esitellä yritykselle ja sen eri osat voivat saada saman käsityksen vaatimustenhallinnasta. Tutkimus esittelee vaatimustenhallinnan prosessina, joka pitää sisällään vaatimusten jäljitettävyyden, vaatimusten dokumentoinnin, vaatimusten muutoksenhallinnan ja vaatimusmäärityksen. Vaatimusmääritys voidaan edelleen jakaa vaatimusten koostamiseen, analysointiin ja neuvotteluun sekä validointiin. Työssä esitellään geneerinen vaatimustenhallinnan prosessimalli. Mallin avulla näytetään, että vaatimustenhallinta on jatkuva prosessi, jossa kaikki aktiviteetit ovat kytköksissä toisiinsa. Näitä aktiviteettejä suoritetaan enemmän tai vähemmän samanaikaisesti. Malli esitetään geneerisessä muodossa, jotta se olisi hyödynnettävissä systeemi- ja tuotekehitys projekteissa sekä sisäisissä kehitysprojekteissa. Se kertoo, että vaatimukset tulisi jalostaa niin aikaisin, kuin mahdollista, jotta muutoksien määrä kehitystyön myöhemmissä vaiheissa voitaisiin minimoida. Jotkin muutokset eivät ole vältettävissä, joten muutoksenhallinnan tueksi tulisi kehittää jäljitettävyyskäsikirja ja jäljitettävyyskäytännöt. Vaatimustenhallintaa tarkastellaan meneillään olevassa kehitysprojektissa. Tarkastelussa tutkitaan, mitä vaatimustenhallinnan toimintatapoja sekä analysointi- ja validointimetodeja käytetään ja mitä voitaisiin tehdä vaatimustenhallinnan parantamiseksi projektissa.

Automation concept for an electrically excited synchronous motor: Setup and requirements specification

This bachelor’s thesis is a part of the research project realized in the summer 2011 in Lappeenranta University of Technology. The goal of the project was to create an automation concept for controlling an electrically excited synchronous motor. This thesis concentrates on the setup and requirements specification part of the concept. The setup consists of ABB AC500 as the PLC master device, DCS800 as an exciter and ACS800 as a frequency converter. The ACS800 frequency converter uses permanent magnet synchronous machine software to control the stator’s magnetic field, the DC drive handles the excitation and the AC500 PLC master controls the communication and functionality of the system. The requirements specification briefly explains the general over-view of the concept, the use and functionality of the PLC program and the requirements needed for the whole concept and the PLC program to work as intended.

Designing the transformation from a boiler supplier into a solution seller

Competition for customers in business-to-business markets is rough, and in order to survive a seller has to be able to deliver more value to its customers than its competitors. This thesis is done for the sales department of an energy technology company operating in business-to-business markets. The company is a relatively small in its field, and it aims to expand internationally and differ itself from its competitors by providing better service for its customers and selling solutions. This study aims to design the transformation from a product seller into a solution seller by defining what is a solution and how solutions are sold, and creating an action plan for sales. Data for the study is collected in ten theme interviews, and analyzed with thematic and content analysis. The action plan is constructed based both on the data and theory. According to the findings of the study, solution is defined as a specially designed unique combination of elements – such as products, services, knowledge, experience and thinking – that work with and complement each other, and bring value to a particular customer. Solution sales requires capabilities to anticipate; build relationships with customers; identify needs and define requirements; cocreate solutions by customizing and integrating elements; and provide postdeployment support. Vision for the change is to sell solution through sensing customers’ needs and responding to them, and the steps of the action plan are to (1) cascade customer-focus, (2) involve other departments in solution sales, (3) develop customer relationship management, and (4) involve the whole organization in solution business.

Work for your happiness - Theoretical and empirical study defining and measuring happiness at work

There are vast changes in the work environment, and the traditional rules and management methods might not be suitable for today’s employees anymore. The meaning of work is also changing due to the younger and higher educated generations entering the markets. Old customs need to be re-validated and new approaches should be taken into use. This paper strongly emphasizes the importance of happiness research and happiness at work. The values towards the meaning of work are changing; people demand happiness and quality from all aspects of their lives. The aim of this study is to define happiness - especially at work - and to explain how it can be measured and what kind of results achieved. I also want to find out how the contents of work and the working environment might enhance happiness. The correlation between education and happiness is discussed and examined. I am aware that the findings and theories are concentrating mainly on Western Countries and highlighting the values and work-environments of those societies. The main aim of the empirical study is to find out if there are connections between happiness and work in data collected by World Value Survey in 2005, and if the profession has effects on happiness. Other factors such as the correlation of age, sex, education and income are examined too. I also want to find out what kind of values people have towards work and how these affect the happiness levels. The focus is on two nations: Finland (N=1014) and Italy (N=1012). I have also taken the global comparison within, that is all 54 countries (N=66,566) included in the 5th wave (during the years 2005 -2008) of the World Value Survey. The results suggest that people are generally happy around the world; happiness decreasing with the age, the educated being happier than the uneducated and the employed happier than the unemployed. People working in neat “white collar” jobs are more likely happier than those working in factories or outdoors. Money makes us happier, until certain level is reached. Work is important to people and the importance of work adds happiness. Work is also highly appreciated, but there are more happy people among those who do not appreciate work that highly. Safety matters the most when looking for a job, and there are more happy people among those who have selected the importance of work as the first choice when looking for a job, than among those to whom an income is the most important aspect. People are more likely happy when the quality of work is high, that is when their job consists of creative and cognitive tasks and when they have a feeling of independence.

The Finnish it industries in transition. Defining and Measuring the Finnish Software Product and IT Services Industries by Applying Theoretical Frameworks

The starting point of this study is that the prevailing way to consider the Finnish IT industries and industry information often results in a limited and even skewed picture of the sector. The purpose of the study is to contribute and increase knowledge and understanding of the status, structure and evolution of the Finnish IT industries as well as the Finnish IT vendor field and competition. The focus is on software product and IT services industries which form a crucial part of all ICT industries. This study examines the Finnish IT sector from production (supply) as well as market (demand) perspective. The study is based on empirical information from multiple sources. Three research questions were formulated for the study. The first concerns the status of the Finnish IT industries considered by applying theoretical frameworks. The second research question targets at the basis for the future evolution of the Finnish IT industries and, finally, the third at the ability of the available definitions and indicators to describe the Finnish IT industries and IT markets. Major structural changes like technological changes and related innovations, globalization and new business models are drivers of the evolution of the IT industries. The findings of this study emphasize the significant role of IT services in the Finnish IT sector and in connection to that the ability to combine IT service skills, competences and practices with high level software skills also in the future. According to the study the Finnish IT enterprises and their customers have become increasingly dependent on global ecosystems and platforms, applications and IT services provided by global vendors. As a result, more IT decisions are made outside Finland. In addition, IT companies are facing new competition from other than IT industries bringing into market new substitutes. To respond to the new competition, IT firms seek growth by expanding beyond their traditional markets.. The changing global division of labor accentuates the need for accurate information of the IT sector but, at the same time, also makes it increasingly challenging to acquire the information needed. One of the main contributions of this study is to provide frameworks for describing the Finnish IT sector and its evolution. These frameworks help combine empirical information from various sources and make it easier to concretize the structures, volumes, relationships and interaction of both, the production and market side of the Finnish IT industry. Some frameworks provide tools to analyze the vendor field, competition and the basis for the future evolution of the IT industries. The observations of the study support the argument that static industry definitions and related classifications do not serve the information needs in dynamic industries, such as the IT industries. One of the main messages of this study is to emphasize the importance of understanding the definitions and starting points of different information sources. Simultaneously, in the structure and evolution of Finnish IT industries the number of employees has become a more valid and reliable measure than the revenue based indicators.

Viitearkkitehtuuri Windows-sovelluksen käyttöliittymän modernisoimiseksi web-sovellukseksi

IT-järjestelmillä on tärkeä rooli organisaation liiketoiminnassa. Koska organisaation liiketoimintavaatimukset ja strategia muuttuvat ympäröivän maailman mukaan, täytyy järjestelmän arkkitehtuurin sopeutua vallitsevaan tilanteeseen sekä mahdollisiin muutoksiin lyhyellä ja pitkällä aikavälillä. Modernin web-sovelluksen arkkitehtuuri sopeutuu organisaation liiketoiminnan haasteisiin. Erityisesti hallinnolliseksi ongelmaksi organisaatiossa muodostuvat Windows-sovellukset, koska niiden ylläpito sitoo henkilöresursseja ja niiden käyttökonteksti on rajallinen. Tästä syystä organisaatiot ovat käyneet etsimään ratkaisuja kuinka korvata Windows-sovellukset web-sovelluksilla. Kustannustehokas ratkaisu on modernisoida Windows-sovelluksen käyttöliittymä web-sovellukseksi. Tämän diplomityön tavoitteena oli laatia Logica Suomi Oy yritykselle viitearkkitehtuuri Win-dows-sovelluksen käyttöliittymän modernisoimiseksi web-sovellukseksi. Työ suoritettiin Proof of Concept projektissa, jossa modernisointiin Logican pääkäyttäjäsovellus. Työn tarkoituksena oli tunnistaa laajalti käytetyt arkkitehtuurimallit ja menetelmät jotka mahdollistavat modernisoinnin toteutuksen. Lisäksi tarkoitus oli tunnistaa menetelmät ja ohjelmistot jotka mahdollistavat kustannustehokkaan ja laadukkaan web-sovelluksen kehittämisen ja toteuttamisen. Työn osatavoitteena oli laatia modernisoitavan pääkäyttäjäsovelluksen kokonaisarkkitehtuuri. Työn tuloksena saatiin viitearkkitehtuuri jota voidaan käyttää ja hyödyntää ohjelmistokehitysprojekteissa, asiakkaan dokumentaatiossa, myynnissä ja markkinoinnissa. Viitearkkitehtuurissa on esitelty modernit web-teknologiat joilla on mahdollista toteuttaa web-sovellus jonka käyttökokemus vastaa Windows-sovellusta. Lisäksi tuloksena saatiin pääkäyttäjäsovelluksen kokonaisarkkitehtuuri, jonka tärkeimpiä tuloksia ovat modernisoinnin tavoitetila ja sovellusarkkitehtuuri. Tärkeimpiä jatkotoimenpiteitä ovat viitearkkitehtuuriin pohjautuvan modernisointiviitekehyksen laadinta sekä modernisointiprojektin arviointiin käytettävien mittareiden määrittely, suunnittelu ja toteutus. Relevanttien mittareiden avulla voidaan todeta, vastaako modernisoitu sovellus organisaation liiketoimintavaatimuksia ja strategiaa.

Novel Methods for Error Modeling and Parameter Identification of a Redundant Serial-Parallel Hybrid Robot

To obtain the desirable accuracy of a robot, there are two techniques available. The first option would be to make the robot match the nominal mathematic model. In other words, the manufacturing and assembling tolerances of every part would be extremely tight so that all of the various parameters would match the “design” or “nominal” values as closely as possible. This method can satisfy most of the accuracy requirements， but the cost would increase dramatically as the accuracy requirement increases. Alternatively, a more cost-effective solution is to build a manipulator with relaxed manufacturing and assembling tolerances. By modifying the mathematical model in the controller, the actual errors of the robot can be compensated. This is the essence of robot calibration. Simply put, robot calibration is the process of defining an appropriate error model and then identifying the various parameter errors that make the error model match the robot as closely as possible. This work focuses on kinematic calibration of a 10 degree-of-freedom (DOF) redundant serial-parallel hybrid robot. The robot consists of a 4-DOF serial mechanism and a 6-DOF hexapod parallel manipulator. The redundant 4-DOF serial structure is used to enlarge workspace and the 6-DOF hexapod manipulator is used to provide high load capabilities and stiffness for the whole structure. The main objective of the study is to develop a suitable calibration method to improve the accuracy of the redundant serial-parallel hybrid robot. To this end, a Denavit–Hartenberg (DH) hybrid error model and a Product-of-Exponential (POE) error model are developed for error modeling of the proposed robot. Furthermore, two kinds of global optimization methods, i.e. the differential-evolution (DE) algorithm and the Markov Chain Monte Carlo (MCMC) algorithm, are employed to identify the parameter errors of the derived error model. A measurement method based on a 3-2-1 wire-based pose estimation system is proposed and implemented in a Solidworks environment to simulate the real experimental validations. Numerical simulations and Solidworks prototype-model validations are carried out on the hybrid robot to verify the effectiveness, accuracy and robustness of the calibration algorithms.

Pilvipalvelun identiteetin- ja pääsynhallinta palveluna

Työn tavoite on ollut tutkia ja rakentaa pilvipalvelun identiteetin- ja pääsynhallinta liiketoimintapalveluksi yrityksille ja organisaatioille. Lähtökohtana on ollut valmiiden identiteetinhallintaohjelmistotuotteiden käyttäminen kehitettävän palvelutuotteen osana. Työssä on ollut tarkoitus selvittää, voiko identiteetinhallintaa ja pääsynhallintaa tuottaa ja tarjota pilvipalveluna kannattavasti. Tutkimusote on ollut konstruktiivinen ja triangulaatiossa on käytetty useaa menetelmää, jotta on saatu selvä kuva liiketoiminnan luonteesta ja tarpeista. Menetelmiä ovat olleet kyselytutkimus ja peste-analyysi. Lisäksi on tehty liiketoimintasuunnitelma ja palveluliiketoiminnan kuvaus Orsterwalderin canvas- menetelmällä. Jokainen tutkimusosa on ollut oleellinen määritettäessä palvelutuotteen ominaisuuksia, koska tavoite on ollut saada mahdollisimman luotettava ja helppokäyttöinen tuote nopeasti kasvaville pilvipalvelumarkkinoille. Tutkimuksen tuloksena on määritelty malli palveluliiketoiminnan tarpeisiin sopivasta turvallisesta palvelualustasta, joka skaalautuu hyvin pilvipalveluiden käytön lisääntyessä voimakkaasti. Liiketoimintasuunnitelman laskelmien avulla on löydetty käyttäjämäärien alarajat kannattavaan liiketoimintaan. Lisäksi on huomattu palvelun rakenteen auttavan yrityksiä ja organisaatiota suojaamaan pilvipalveluiden käyttäjätunnukset ja salasanat väärinkäytöksiltä, mikä on tarpeellista ja ajankohtaista kaikille organisaatioille, jotka harkitsevat pilvipalveluiden käyttöä ja haluavat tehdä sen tietoturvallisesti. Tutkimuksen tuloksena on pystytty määrittelemään, onko liiketoiminta kannattavaa vai ei sekä palvelun tarvitsemat liiketoimintaelementit.

But in this twilight our choices seal our fate : the interplay autonomy and dignity in defining the international legal response to the beginning of life

Tutkielman aiheena on kansainvälisen oikeuden kysymys elämän alkamisesta ja elämän alkamisen ajankohdasta. Tutkielma lähestyy aihetta Yhdistyneiden kansakuntien lasten oikeuksien sopimuksen kolmannen lisäpöytäkirjan valossa. Astuessaan voimaan lisäpöytäkirja tulee mahdollistamaan yksilövalitusten käsittelyn erillisessä ihmisoikeuskomiteassa. Koska lasten oikeuksien sopimus jättää määrittelemättä elämän alkamisen ajankohdan, tutkielman perushypoteesina on, miten tuleva komitea ratkaisisi lasten oikeuksien sopimukseen jääneen jännitteen. Tämän hypoteesin ohella tutkielmaa suuntaa olettamus elämän alun määrittymisestä pitkälti oikeusperiaatteisiin rinnastuvien autonomian ja ihmisarvon käsitteiden kautta. Tutkielma lähestyy aihettaan sekä oikeuskäytännön että -kirjallisuuden valossa, sitoutumatta sen tarkemmin mihinkään yksittäiseen oikeustieteelliseen tutkimusmetodiin. Oikeuskäytännön kohdalla tarkastelu perustuu pääosin länsimaisten ylimpien oikeuksien antamille tuomioille kysymyksissä, jotka liittyvät elämän alkamisen tematiikkaan. Tämän ohella, rajatummin, käsitellään pohjoismaista elämän alun sääntelyä. Oikeuskäytännön sekä säädösten tarkastelun keskiössä on ennen kaikkea oikeudellinen argumentaatio sekä esiintuodun argumentaation jännitteisyys. Oikeuskäytännön pohjalta muotoutuu moniääninen ja usein kontekstisidonnainen kuva elämän alusta. Tämän oikeudellisen moniäänisyyden analyysi muodostaa tutkielman keskeisen sisällön. Autonomian ja ihmisarvon käsitteiden merkitystä oikeuskäytännön ja säädösten arvioinnille perustellaan tutkimuksessa yhtäältä niiden merkityksellä tuomioistuinten argumentaatiossa toisaalta periaatteiden saamalla tuella oikeustieteellisessä kirjallisuudessa. Tutkielma suhtautuu kriittisesti autonomian ja ihmisarvon käsitteisiin. Kriittisen luennan tarkoituksena on paljastaa oikeudellisen argumentaation sumeus ja sumeuden oikeudelliselle tulkinnalle aiheuttama epävarmuus. Tulkinnan epävarmuuden seurauksena myös vastaus elämän alulle näyttäytyy tutkielmassa ristiriitaisena ja osin perustelemattomana. Tutkielman keskeinen tulos on ennen kaikkea oikeuden jännitteiden tunnistamisessa sen lähestyessä elämän alun määrittelyä. Tutkielman tulosten pohjalta on mahdollista pyrkiä löytämään muotoutumassa olevan kansainvälisen oikeuden vastaus elämän alulle. Tuon vastauksen vakaus, perusteltavuus ja pysyvyys riippuvat siitä, miten onnistuneesti oikeudellinen argumentaatio kykenee yhdistämään yksilön autonomisen oikeuden päättää elämästään kollektiivin intressiin ylläpitää elämää.

Defining of the material models for stainless steels to be used in FE modeling

The aim of this work is to study the results of tensile tests for austenitic stainless steel type 304 and make accurate FE-models according to the results of the tests. Tensile tests were made at Central Research Institute of Structural Material, Prometey at Saint Petersburg and Mariyenburg in Russia. The test specimens for the tensile tests were produced at Lappeenranta University of Technology in a Laboratory of Steel Structures. In total 4 different tests were made, two with base material specimens and two with transverse butt weld specimens. Each kind of a specimen was tested at room temperature and at low temperature. By comparing the results of room and low temperature tests of similar test specimen we get to study the results of work hardening that affect the austenitic steels at below room temperature. The produced specimens are to be modeled accurately and then imported for nonlinear FEM- analyzing. Using the data gained from the tensile tests the aim is to get the models work like the specimens did during the tests. By using the analyzed results of the FE-models the aim is to calculate and get the stress-strain curves that correspond to the results acquired from the tensile tests.

Defining the art of grammar: Ancient perceptions of γραμματική and grammatical

The subject of this dissertation, which belongs to the field of Classical Philology, are the definitions of the art of grammar found in Greek and Latin sources from the Classical era to the second century CE. Definitions survive from grammarians, philosophers, and general scholars. I have examined these definitions from two main points of view: how they are formed, and how they reflect the development of the art itself. Defining formed part of dialectic, in practice also of rhetoric, and was perceived as important from the Classical era onwards. Definitions of grammar seem to have become established as part of preliminary discussions, located at the beginning of grammatical manuals (tékhnai, artes). These discussions included certain principal notions of the art; in addition to the definition, a list of the parts of the art was also typically included. These lists were formed by two different methods: division (diaíresis, divisio) and partition (merismós, partitio). Many of the grammarians may actually have been unfamiliar with these methods, unlike the two most important scholars of the Late Republic, Varro and Cicero. Significant attention was devoted to the question whether the art of grammar is based on lógos or empeiría. This epistemological question had its roots in medical theories, which were prominent in Alexandria. In the history of the concept of grammatiké or grammatica, three stages become evident. In the Classical era, the Greek term is used to refer to a very concrete art of letters (grámmata); from the Hellenistic era onwards it refers to the art developed by the Alexandrian scholars, a matter of textual and literary criticism. Towards the end of the Hellenistic era, the grammarian also becomes involved with the question of correct language, which gradually begins to appear in the definitions as well.

A rose is a rose is a rose? Defining significant properties of social science research data

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

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.

The requirements and needs of global data usage in product lifecycle management

This study was done for ABB Ltd. Motors and Generators business unit in Helsinki. In this study, global data movement in large businesses is examined from a product data management (PDM) and enterprise resource planning (ERP) point-of-view. The purpose of this study was to understand and map out how a large global business handles its data in a multiple site structure and how it can be applied in practice. This was done by doing an empirical interview study on five different global businesses with design locations in multiple countries. Their master data management (MDM) solutions were inspected and analyzed to understand which solution would best benefit a large global architecture with many design locations. One working solution is a transactional hub which negates the effects of multisite transfers and reduces lead times. Also, the requirements and limitations of the current MDM architecture were analyzed and possible reform ideas given.