Search results for "menetelmä"

Method development for determination and recovery of rare earth elements from industrial fly ash

2014

Rare earth elements (REE) are important in numerous high technology applications and in addition their supply risk is high, which gives rise to studying new sources for rare earth elements. Rare earth element concentrations in industrial fly ash samples collected from Finnish power plants, using a mixture of peat and biomass as a fuel, have been determined. Two sample pre-treatment methods, ultrasound- and microwave-assisted acid digestions, have been applied to fly ash samples. Measurement conditions for inductively coupled plasma-optical emission spectrometry (ICP–OES) have been optimized to reach robust plasma conditions and the reliability of the analysis has been investigated by using …

Why Use Interactive Multi-Objective Optimization in Chemical Process Design?

2008

Problems in chemical engineering, like most real-world optimization problems, typically, have several conflicting performance criteria or objectives and they often are computationally demanding, which sets special requirements on the optimization methods used. In this chapter, we point out some shortcomings of some widely used basic methods of multi-objective optimization. As an alternative, we suggest using interactive approaches where the role of a decision maker or a designer is emphasized. Interactive multi-objective optimization has been shown to suit well for chemical process design problems because it takes the preferences of the decision maker into account in an iterative manner tha…

Developing and comparing methods for mapping habitat types and conservation values using remote sensing data and GIS methods

2014

Meta-analyysin ja metaregression soveltaminen fyysistä aktiivisuutta mittaaviin tutkimuksiin

2017

Tieteellistä tietoa tuotetaan jatkuvasti lisää, mutta sen yhdistäminen aiempaan tietämykseen ei ole ongelmatonta. Tilastotieteellisesti tätä pulmaa lähestytään meta-analyysin ja metaregression avulla. Meta-analyysi on systemaattisessa kirjallisuuskatsauksessa kerätyn aineiston tilastollista yhteenvetoa; useista estimaateista luottamusväleineen muodostetaan yksi keskimääräinen estimaatti ja sen luottamusväli. Huomattavaa on, että meta-analyysin aineisto on eräänlainen aineistojen aineisto; havaintoyksiköitä eivät ole tutkimuksiin osallistuvat koehenkilöt vaan itse tutkimukset. Metaregressio on meta-analyysiä, jossa yhteenveto tehdään hyödyntämällä tutkimusten taustamuuttujia eli kovariaattej…

Yläkoulun opettajien kokemuksia seksuaaliopetuksen opetusmenetelmistä

2009

Self-injurious behavior : assessment and treatment

2016

This research explored the conceptualisation of self-injurious behavior (SIB) in terms of similarities and differences amongst the two types of this behavior. It further explored the efficacy of a brief psychological intervention for SIB as well as the effect of a brief training in the assessment and treatment of SIB on the attitudes psychiatric personnel hold towards people who engage in SIB. The participants in two of the three studies reported here were individuals who following a self-injury episode approached the accident and emergency unit at the Central Finland Community General Hospital. The participants in the third study were psychiatric personnel from the North Karelia Health Dis…

Student Teachers’ Video-Assisted Collaborative Reflections of Socio-Emotional Experiences During Teaching Practicum

2022

This study explores video as a tool for student teachers in reflecting upon their own teaching practice. The particular interest is in exploring, what kind of socio-emotional experiences did the student teachers describe during the video-assisted collaborative reflection and what benefits student teachers experienced through the video-assisted collaborative reflections? The study implements a video-observation model (Participatory and Empowering Video Analysis- model, PEVA™) developed for a professional teacher education programme and investigates the model from student teachers’ perspective. The participants are student teachers in an international professional teacher education programme …

Osallistava sävellytysmenetelmä musiikinopetukseen : peruskoulun opetussuunnitelman 2014 tavoitteita ja oppimisen ydinmetaforia toteuttamassa

2017

In my case study, I used two composing tasks to examine how the inclusive composing method (OSM) I have developed promotes the achievement of the aims of the new core curriculum for basic education 2014 and realises the core metaphors of learning. I have created a learning triangle tool to determine how the musical contents, the principles for developing working culture and the goals of music teaching, transversal competences and national education are linked with the latter. In addition to participation and the gaining and creation of knowledge, I included operative competences in these core metaphors. I examined the means OSM offers to evaluate how the students achieve the aims of musical…

Reflectance Measurement Method Based on Sensor Fusion of Frame-Based Hyperspectral Imager and Time-of-Flight Depth Camera

2022

Hyperspectral imaging and distance data have previously been used in aerial, forestry, agricultural, and medical imaging applications. Extracting meaningful information from a combination of different imaging modalities is difficult, as the image sensor fusion requires knowing the optical properties of the sensors, selecting the right optics and finding the sensors’ mutual reference frame through calibration. In this research we demonstrate a method for fusing data from Fabry–Perot interferometer hyperspectral camera and a Kinect V2 time-of-flight depth sensing camera. We created an experimental application to demonstrate utilizing the depth augmented hyperspectral data to measu…

Separation of palladium and silver from E-waste leachate : effect of nitric acid concentration on adsorption to Thiol scavenger

2022

The development of recovery techniques for metals present in low concentrations in E-waste, such as silver and palladium, is important from the aspect of the circular economy. Adsorption of palladium and silver was studied in detail in a batch process with silica-based Thiol scavenger from nitric acid leachate of waste printed circuit boards (PCBs). High adsorption efficiencies of Pd(II) and Ag(I), >97%, were reached in nitric acid concentrations below 3 mol L−1. At higher acid concentrations, adsorption efficiency of Ag(I) decreased drastically which enables the separation of Ag(I) and Pd(II) based on nitric acid concentration in sample solution. Pd(II) and Ag(I) followed pseudo 2nd order …