Mobile ERP in the use of maintenance operations of forest industry

Toiminnanohjausjärjestelmien käyttö on muuttanut metsäteollisuuden kunnossapidon työntekijän toimenkuvaa kunnossapidon perustoiminnoista itseohjautuvampaan tietojen käsittelyyn ja jalostamiseen. Työn tavoitteena oliselvittää mobiilin työtilausjärjestelmän vaikutuksia metsäteollisuuden kunnossapidon kenttätyössä. Mobiilin työtilausjärjestelmän käyttö metsäteollisuuden kunnossapidossa mahdollistaa tärkeän kunnossapitotiedon keräämisen ja tarkentamisen kentällä, jossa se usein on ajanmukaisinta ja tarkinta. Haasteellisinta on oikeanlaisen teknologian löytäminen ja standardoiminen kunnossapidon toimintaympäristöihin. Myös organisaation toimintoprosessien on oltava selkeät ennen kuin prosesseja voidaan tehostaa teknologisin keinoin.

Hybridikäytön mitoitus liikkuvan työkoneen energian talteenottojärjestelmäksi

Työssä tarkastellaan sähköisiä energian talteenottomahdollisuuksia liikkuvissa työkoneissa. Työssä esitetään kolme erityyppistä liikkuvaan työkoneeseen soveltuvaa sähköisen energian talteenottojärjestelmää sekä mitoitetaan hybridikäyttö kahdelle erityyppiselle työkonesovellukselle kuormituskäyrien perusteella. Lisäksi työssä lasketaan hybridijärjestelmää käyttämällä saavutettava energiansäästö nykyiseen käyttöön verrattuna.

Mobiilipalvelut koulutusorganisaation liikkuvan työn välineenä

Päijät-Hämeen koulutuskonsernissa käynnistettiin 2008 hanke liikkuvan työn ratkaisuista, johon yhtenä osa-alueena kuului henkilöstön mobiilitarpeiden tarvekartoitus ja erilaisten liikkuvaa työtä tekevien ryhmien tunnistaminen ja luokittelu. Mobiilipalvelujen tarvekartoitus toteutettiin käyttäjälähtöisenä kyselytutkimuksena koko konsernin henkilöstölle. Tämän opinnäytetyön tavoitteena oli selvittää ammattikorkeakoulun opetushenkilöstön mobiilipalvelujen tarve ja sen perusteella tunnistaa ja luokitella erilaiset käyttäjäprofiilit. Tarvekartoitusprojekti sisälsi selvityksen, jossa haluttiin saada selville eri käyttäjäryhmien mobiilaitteiden ja tietoliikenneyhteyksien tarve. Lisäksi haluttiin selvittää, missä vastaajat työskentelevät ja kiinnostus oli erityisesti siihen, miten mobiilia vastaajien työ on tällä hetkellä. Työn tuloksia tullaan hyödyntämään hankesuunnittelussa ja mobiilipalvelujen kilpailutuksessa.

Investointilaskelmien hyödyntäminen teknologisen innovaation myyntityössä. Tapaustutkimus

Tämän tutkimuksen tutkimuskohteena oli case-yrityksen tuoteinnovaation kannattavuuden tarkastelu. Kiristyneen ilmastopolitiikan seurauksena tutkimuksen kohdeyritys on kehittänyt innovaation ja tutkimuksen päätavoite oli laatia kohdeyritykselle innovaation myyntityön tueksi Microsoft Excel-taulukkolaskentaohjelmalla investointilaskentatyökalu. Toisena tavoitteena oli selvittää innovaation, eli liikkuvien työkoneiden hybridisoinnin, kannattavuus investointilaskelmien avulla. Investointilaskelmien lisäksi tutkimuksessa perehdyttiin korkean teknologian markkinointiin ja yritysasiakkaiden käyttäytymiseen innovaatioiden omaksujina. Tutkimus on tyypiltään laadullinen tapaustutkimus. Investointilaskentatyökalu rakennettiin kohdeyrityksen tarpeiden mukaan ja investointien kannattavuutta mitattiin korottoman ja korollisen takaisinmaksuajan, sisäisen koron sekä nettonykyarvon avulla, minkä lisäksi nettonykyarvolle tehtiin herkkyysanalyysi. Kannattavuuslaskelmat tehtiin omaksujan näkökulmasta myyntityön tueksi kohdeyritykselle. Investointilaskelmat osoittivat että kohdeyrityksen tuottama innovaatio on kannattava sijoitus ja tutkimustuloksena syntynyt konstruktio osoittautui toimivaksi. Laskelmiin vaikutti eniten investoinnin hinta ja polttoaineen hinnan nousulla oli merkittävä vaikutus investoinnin kannattavuuteen.

Työtyytyväisyys etätyössä

Työn ydinpiirteiden vaikutus työtyytyväisyyteen.

Standardized electrical tests for electrical equipment in road vehicles Case: Visedo Oy PowerMASTER M-frame

Electrical road vehicles were common at the begin of the 20th century but internal combustion engines took a victory from electrical motors in road vehicles. The acknowledgement of the environment, and the price and the availability of the crude oil are reasons for the comeback of the electrical vehicles. Advancement in industrial technology and political atmosphere in EU as the directive 20--20--20, which consists of reducing fossil emission, increasing renewable energy and increasing the energy efficiency, have made the electrification popular again. In this thesis tests based on standard ISO 16750--2 electrical loads for electrical equipment in road vehicles are made for Visedo Oy's PowerMASTER M-frame power electronics device. This device is designed for mainly drive trains in mobile work machines and marine vessels but can be used in other application in its power range which also includes road vehicles. The functionality of the device is tested with preliminary tests which act as a framework for the tests based on standards.

Trabalho móvel: em trânsito por aeroportos e aviões

Argumenta-se na contemporaneidade que o trabalho adquiriu a possibilidade de ser realizado “a qualquer hora e em qualquer lugar” e que, particularmente, pode ser realizado em movimento, enquanto a pessoa que trabalha desloca-se de um lugar a outro. Este estudo investiga esse último, o trabalho móvel; em especial, aquele que envolve o uso de tecnologias de informação e comunicação e realizado enquanto a pessoa que trabalha desloca-se por meio do sistema de transporte aéreo. Este projeto explora, especificamente, o desempenho de espaço-tempos de trabalho em terminais de aeroportos e em aviões. Para tanto, adota a abordagem teórico-metodológica Teoria Ator-Rede que considera o social um movimento de associações entre elementos heterogêneos e os espaço-tempos, incluindo aqueles de trabalho, efeitos de modos como humanos e não humanos relacionam-se entre si. A estratégia metodológica envolveu uma combinação de observação de campo, auto-observação e entrevistas com pessoas que vivem a experiência do trabalho móvel. A coleta de dados compreendeu: (a) horas de observação de pessoas e situações, em alguns terminais de aeroportos no Brasil e em voos entre a cidade de São Paulo e outras capitais do país, e (b) entrevistas semiestruturadas com pessoas que, com certa frequência, deslocam-se para trabalhar por meio do sistema de transporte aéreo. Como resultado, este estudo contribui para as análises sobre o fenômeno do trabalho móvel, realizado em aeroportos e aviões, e destaca: os atores envolvidos, bem como os agentes que levam esses atores a agir; a quantidade de objetos ativos na manifestação do fenômeno; e as controvérsias envolvidas com o tema. Além disso, aponta elementos empíricos (i) que revelam lugares em que os fenômenos de trabalho móvel se manifestam esporadicamente, de modo disperso, como “bolhas”, e (ii) que se contrapõem à ideia que é possível trabalhar “a qualquer hora e em qualquer lugar”. As contribuições deste estudo ecoam resultados de pesquisas desenvolvidas sobre trabalho móvel, assim como apresentam particularidades, como a metáfora da bolha, amplificações de aspectos pouco presentes nos textos sobre o tema e elementos peculiares do trabalho móvel investigado no espaço-tempo da pesquisa

Street Children and Mobile Youth Work in Africa - the 8th ISMO Symposium October 2003

The International Society for Mobile Youth Work (ISMO) and the National Council of Churches in Kenya (NCCK) organised from the 27th to 30th October 2003 at the Jumuia Conference and Country Home in Limuru/Kenya with 198 participants from 35 countries around the world the 8th International Symposium on Mobile Youth Work with special focus on children at risk (street children and youth) in Africa. For this purpose there were invited field workers, scientists and stakeholders engaged as advocates for the rights and well being of endangered children and youths. The participants came mainly from African countries and of course especially from Kenya, but also from Asia, Latin America and from Europe.

Quantification and source identification of atmospheric particulate polycyclic aromatic hydrocarbons and their dry deposition fluxes at three sites in Salvador Basin, Brazil, impacted by mobile and stationary sources

The present work has aimed to determine the 16 US EPA priority PAH atmospheric particulate matter levels present in three sites around Salvador, Bahia: (i) Lapa bus station, strongly impacted by heavy-duty diesel vehicles; (ii) Aratu harbor, impacted by an intense movement of goods, and (iii) Bananeira village on Maré Island, a non vehicle-influenced site with activities such as handcraft work and fisheries. Results indicated that BbF (0.130-6.85 ng m-3) is the PAH with highest concentration in samples from Aratu harbor and Bananeira and CRY (0.075-6.85 ng m-3) presented higher concentrations at Lapa station. PAH sources from studied sites were mainly of anthropogenic origin such as gasoline-fueled light-duty vehicles and diesel-fueled heavy-duty vehicles, discharges in the port, diesel burning from ships, dust ressuspension, indoor soot from cooking, and coal and wood combustion for energy production.

An optical flow-based sensing system for reactive mobile robot navigation

This work discusses the use of optical flow to generate the sensorial information a mobile robot needs to react to the presence of obstacles when navigating in a non-structured environment. A sensing system based on optical flow and time-to-collision calculation is here proposed and experimented, which accomplishes two important paradigms. The first one is that all computations are performed onboard the robot, in spite of the limited computational capability available. The second one is that the algorithms for optical flow and time-to-collision calculations are fast enough to give the mobile robot the capability of reacting to any environmental change in real-time. Results of real experiments in which the sensing system here proposed is used as the only source of sensorial data to guide a mobile robot to avoid obstacles while wandering around are presented, and the analysis of such results allows validating the proposed sensing system.

Innovation and adoption of mobile technology in public organizations: the IBGE case

The use of Mobile and Wireless Information Technologies (MWIT) for provisioning public services by a government is a relatively recent phenomenon. This paper evaluates the results of MWIT adoption by IBGE (The Brazilian Institute of Geography and Statistics) through a case study. In 2007, IBGE applied 82,000 mobile devices (PDAs) for data gathering in a census operation in Brazil. A set of challenges for a large scale application of MWIT required intensive work involving innovative working practices and service goals. The case reveals a set of outputs of this process, such as time and cost reductions in service provision, improved information quality, staff training and increased organizational effectiveness and agility.

Reconfigurable antenna for mobile devices

O trabalho descrito nesta dissertação de mestrado foca-se em geral na investigação de antenas impressas. São apresentados conceitos básicos, em conjunto com alguns exemplos desenvolvidos. No entanto, o principal foco prende-se com técnicas de miniaturização e reconfigurabilidade de antenas. A miniaturização de antenas é um tema de investigação de longa data, no entanto, novas técnicas e soluções são apresentadas regularmente. Nesta tese, é aplicada uma técnica recente, baseada na introdução de indutores encapsulados no elemento ressonante de uma antena, que permite miniaturizar um monopólio impresso com uma frequência de ressonância de 2.5 GHz. Outro assunto abordado neste trabalho é a reconfigurabilidade de antenas. Algumas das técnicas mais comuns na investigação actual são apresentadas e debatidas. Uma solução com recurso a díodos PIN é usada para estudar esta capacidade. Os conceitos e características deste tipo de componentes são apresentadas sendo feito o desenho e fabrico de um possível monopólio impresso reconfigurável para operação em dupla banda. Por fim, são combinadas as técnicas de miniaturização com inductor encapsulado e reconfigurabilidade através de díodos PIN, por forma a projectar uma antena reconfigurável muito pequena, para operação em duas bandas distintas. Os resultados são discutidos e com base nestes, algumas possíveis otimizações são propostas. The work reported in this dissertation is focused in the printed antenna research. Basic concepts of printed antennas are presented, along with a few examples that were developed. The main focus however, is around miniaturization and reconfigurability of antennas. Antenna miniaturization is a long time research subject, however, new techniques and solutions are presented everyday. In this thesis, a recent technique based on the introduction of chip inductors in the resonating element of a printed antenna is used in order to miniaturize a monopole with a resonating frequency at 2.5 GHz. Another issue approached in this work is antenna reconfigurability. Some common techniques used in antenna reconfiguration are presented and debated. A solution with PIN diodes is used to study this capability. The concepts and characteristics of this type of components are presented and an example of a reconfigurable printed monopole for dual-band operation is designed and fabricated. At last, miniaturization with chip inductor and reconfigurability through PIN diodes are used together to create a very small antenna for dual-band operation. The simulated and measured results are discussed and upon these, some possible optimizations are proposed.