Search results for "tuki"
showing 10 items of 499 documents
An Approach to the Automatic Comparison of Reference Point-Based Interactive Methods for Multiobjective Optimization
2021
Solving multiobjective optimization problems means finding the best balance among multiple conflicting objectives. This needs preference information from a decision maker who is a domain expert. In interactive methods, the decision maker takes part in an iterative process to learn about the interdependencies and can adjust the preferences. We address the need to compare different interactive multiobjective optimization methods, which is essential when selecting the most suited method for solving a particular problem. We concentrate on a class of interactive methods where a decision maker expresses preference information as reference points, i.e., desirable objective function values. Compari…
Integration of lot sizing and safety strategy placement using interactive multiobjective optimization
2022
We address challenges of unpredicted demand and propose a multiobjective optimization model to integrate a lot sizing problem with safety strategy placement and optimize conflicting objectives simultaneously. The novel model is devoted to a single-item multi-period problem in periodic review policy. As a safety strategy, we use the traditional safety stock concept and a novel concept of safety order time, which uses a time period to determine the additional stock to handle demand uncertainty. The proposed model has four objective functions: purchasing and ordering cost, holding cost, cycle service level and inventory turnover. We bridge the gap between theory and a real industrial problem a…
Interactivized : Visual Interaction for Better Decisions with Interactive Multiobjective Optimization
2022
In today’s data-driven world, decision makers are facing many conflicting objectives. Since there is usually no solution that optimizes all objectives simultaneously, the aim is to identify a solution with acceptable trade-offs. Interactive multiobjective optimization methods are iterative processes in which a human decision maker repeatedly provides one’s preferences to request computing new solutions and compares them. With these methods, the decision maker can learn about the problem and its limitations. However, advanced optimization software usually offer simple visualization tools that can be significantly improved. On the other hand, current approaches for multiobjective optimization…
Revealing Hidden Curvilinear Relations Between Work Engagement and Its Predictors: Demonstrating the Added Value of Generalized Additive Model (GAM)
2014
Previous studies measuring different aspects of the quality of life have, as a rule, presumed linear relationships between a dependent variable and its predictors. This article utilizes non-parametric statistical methodology to explore curvilinear relations between work engagement and its main predictors: job demands, job control and social support. Firstly, the study examines what additional information non-linear modeling can reveal regarding the relationship between work engagement and the three predictors in question. Secondly, the article compares the explanatory power of non-linear and linear modeling with regard to work engagement. The generalized additive model (GAM), that makes pos…
A Multi-Criteria Decision Support System for Strategic Planning at the Swiss Forest Enterprise Level: Coping With Climate Change and Shifting Demands…
2021
Sustainable forest management plays a key role for forest biodiversity and the provisioning of ecosystem services (BES), including the important service of carbon sequestration for climate change mitigation. Forest managers, however, find themselves in the increasingly complex planning situation to balance the often conflicting demands in BES. To cope with this situation, a prototype of a decision support system (DSS) for strategic (long-term) planning at the forest enterprise level was developed in the present project. The DSS was applied at three case study enterprises (CSEs) in Northern Switzerland, two lowland and one higher-elevation enterprise, for a 50-year time horizon (2010 to 2060…
Työn hallintamahdollisuuksien ja sosiaalisen tuen suorat ja puskuroivat yhteydet työntekijän koettuun hyvinvointiin : Karasekin mallin tarkastelua su…
2014
Tutkielmassani tarkasteltiin työn hallintamahdollisuuksien ja sosiaalisen tuen suoria sekä puskuroivia yhteyksiä työntekijän koettuun hyvinvointiin, kun hyvinvoinnin mittareina olivat psyykkinen sekä somaattinen oireilu. Tutkielmassani haluttiin myös selvittää, onko sukupuolella merkitystä sille, miten työn hallintamahdollisuudet ja sosiaalinen tuki ovat yhteydessä työntekijän koettuun hyvinvointiin (sukupuoli yhteyksiä muuntavana tekijänä). Tutkielman teoreettisena näkökulmana oli Robert Kara-sekin työn vaatimusten, työn hallinnan sekä sosiaalisen tuen malli eli ns. JDCS-malli. Tämän tutki-muksen aineisto kerättiin elektronisella kyselylomakkeella vuonna 2008 Suomen Akatemian rahoitta-mass…
Using Slack for computer-mediated communication to support higher education students’ peer interactions during Master’s thesis seminar
2018
Our study contributes to the research on computer-mediated communication in higher education by experimenting a modern communication tool called Slack. In particular, we consider using Slack to support students’ peer interactions during Master’s thesis work. For this purpose, we designed a case study that was executed in a Master’s thesis seminar course. During the course, all out-of-class communication was carried out by using Slack, instead of e-mails or learning management systems. After the course, we used a questionnaire to investigate how the students perceived Slack for asking for assistance, their intention to use Slack, and Slack’s ease of use. Furthermore, the questionnaire asked …
Internet of Things : a gateway centric solution for providing IoT connectivity
2016
The Internet of Things (IoT) is revolutionising the traditional Internet by extending it with smart everyday objects. Wearables, smart grids and home automation systems are just a few examples of the IoT. A noteworthy point is that the amount of devices connected to the Internet will rapidly grow with the IoT. The IoT typically involves devices that are constrained in terms of energy, memory and processing resources. Therefore, they also limit applying the existing Internet protocols to the IoT. New protocols have been designed for the IoT, all the way from the physical layer, to the application layer. This thesis presents an implementation for an IoT gateway, which enables connectivity to …
Oppimisen ja koulunkäynnin tuen järjestelyt kouluissa : rehtorien arviot tukijärjestelyjen toimivuudesta
2015
Esiteltävässä tutkimuksessa tarkasteltiin tukijärjestelyjen toimivuutta perusopetuksessa rehtorien (N = 335) arvioimana. Aineisto kerättiin kyselylomakkeella syksyllä 2012. Rehtoreiden arvioita tukijärjestelyjen toimivuudesta selitti eniten se, millaisia tukijärjestelyjen arvioitiin olleen ennen lakiuudistusta. Koulun osallistuminen Tehostetun ja erityisen tuen kehittämistoimintaan (KELPO-hanke) oli yhteydessä myönteisempiin arvioihin oppimissuunnitelmien käytön, osa-aikaisen erityisopetuksen, kodin kanssa tehtävän yhteistyön, oppilashuoltotyöryhmän ja opetuksen eriyttämisen toimivuudesta. Rehtoreiden arvioiden mukaan tukijärjestelyistä toimivat kouluissa huonoiten yhdessä opettaminen ja op…
Oppilas joustavien tukitoimien keskiössä : kolmiportaisen tuen toteutuminen ja tukitoimien muotoutuminen oppilaan opintopolun aikana
2016
TIIVISTELMÄ Alatalo-Hussein, Tuula. 2016. Oppilas joustavien tukitoimien keskiössä. Kolmiportaisen tuen toteutuminen ja tukitoimien muodostuminen oppilaan opintopolun aikana. Erityispedagogiikan pro gradu -tutkielma. Jyväskylän yliopisto. Kasvatustieteiden laitos. 95 sivua. Tässä pro gradu -tutkielmassa selvitän kolmiportaisen tuen toteutumista perusopetuksen alakoululla. Erityisesti perehdyn siihen kuinka tehostettu tuki on muotoutunut käytännössä yksittäisen oppilaan kohdalla. Kolmiportainen tuki muotoutui Opetushallituksen erityisopetuksen kehittämishankkeen mietinnön pohjalta kirjatun Erityisopetuksen strategian kautta. Kolmiportainen tuki pitää sisällään yleisen, tehostetun ja erityise…