Search results for "ground"

Sulphate removal over barium-modified blast-furnace-slag geopolymer

2016

Blast-furnace slag and metakaolin were geopolymerised, modified with barium or treated with a combination of these methods in order to obtain an efficient SO4(2-) sorbent for mine water treatment. Of prepared materials, barium-modified blast-furnace slag geopolymer (Ba-BFS-GP) exhibited the highest SO4(2-) maximum sorption capacity (up to 119mgg(-1)) and it compared also favourably to materials reported in the literature. Therefore, Ba-BFS-GP was selected for further studies and the factors affecting to the sorption efficiency were assessed. Several isotherms were applied to describe the experimental results of Ba-BFS-GP and the Sips model showed the best fit. Kinetic studies showed that th…

A Cost-Effective Solution for Clearing High-Impedance Ground Faults in Overhead Low-Voltage Lines

2019

Downed distribution conductors in overhead distribution systems may not be a concern for equipment but greatly challenge the safety of persons, as well as the integrity of properties. Standard overcurrent protective devices may not be able to detect the magnitudes of currents resulting from high-impedance ground faults. Sophisticated relays able to detect high-impedance ground faults have been available to electric utilities. However, their implementation is rather uncommon, especially in developing countries, most likely due to their costs. In this paper, the authors formalize the problem, and propose a possible cost-effective solution for low-voltage overhead lines with neutral wire. This…

Qualitative Forschung in Deutsch als Fremdsprache

2009

Qualitative Forschung ist heute ein fester Bestandteil der aktualempirischen Sozial- und Erziehungswissenschaft. Mit ihrem Anspruch, die Sicht der Beforschten zur Grundlage von wissenschaftlichen Untersuchungen werden zu lassen, stellt sie derzeit in der Fremdsprachenerwerbsforschung den favorisierten Forschungsansatz dar. Im vorliegenden Band werden schwerpunktmäßig empirische Forschungsprojekte vorgestellt, aber auch methodologische Fragestellungen auf theoretischer Ebene diskutiert und konkrete Verfahren zur Datenerhebung, -aufbereitung und -analyse erörtert. Die Beiträge sind das Ergebnis eines fachwissenschaftlichen Austauschs, der im Rahmen der 3. Tagung der Deutschen Sprachwissenscha…

Advances in microgeophysics for engineering and cultural heritage

2009

A large number of unconventional investigations have been implemented, tested, and validated in the field of microgeophysics, with the aim being to solve specific diagnostic and/or monitoring problems regarding civil engineering and cultural heritage studies. The investigations were carried out using different tomographic 2D and 3D approaches as well as different energy sources, namely sonic, ultrasonic and electromagnetic (radar) waves, electric potential fields, and infrared thermography. Many efforts have been made to modify instruments and procedures in order to improve the resolution of the surveys as well as to greatly reduce the time of the measurements without any loss of informatio…

Mielenterveys- ja päihdekuntoutujien kotikuntoutus

2015

Tutkielmassa on selvitetty kuntien kotisivuilta kerätyn internet-aineiston avulla, mitä varsin uusi ja tutkimaton palvelumuoto, kotikuntoutuspalvelu tarkoittaa, missä yhteydessä termiä on käytetty sekä millaiset sisällöt, kriteerit, asiakaskunta ja toimintamuodot palvelulle on annettu. Lisäksi tutkailemassa on tarkasteltu kotikuntoutukseen liittyviä tavoitteita ja odotuksia. Tutkimuksen analyysimenetelmänä on grounded theory. Kotikuntoutuskäsitteen ja siihen liittyvien tavoitteiden ja odotusten määrittäminen on hahmottunut kodin ja kuntoutuksen käsitteiden laajemman tarkastelun ja määritysten kautta. Koti määrittyy välttämättömäksi fyysiseksi tilaksi paikan, elinympäristön ja sosiaalisten s…

Social
 Ontology,
Collective 
Intentionality,
and
Mindreading

2013

Standard 
accounts 
of 
social 
reality 
take
collective
 intentionality 
as 
the starting 
point
 of
 the
 creation
 and
 maintenance
 of
 social
 facts.
 But 
collective intentionality 
is 
enabled, 
as
Searle
 suggests,
by
 a 
more 
basic
 capacity 
to 
understand 
another 
person
 as 
an 
agent
like 
oneself
 and
 as 
ready 
to 
engage 
in 
cooperative 
activities.
 We 
can 
coordinate 
our 
collective 
actions
 only
 insofar
 we
 are
 able
 to
 explain
 and
 predict
 the
 behavior
 of
 other
 persons,
 we
 can
 understand 
behavior 
only 
insofar
 we 
can
mindread
 them,
and 
we 
can 
mindread 
them
only
 if
 we
 assume
 the
 constitutive
 role
 of
 rationality
 in
 action.
 Therefore
…

Minä, tuleva luokanopettaja : luokanopettajaksi opiskelevien minäkäsitys opintojen alussa

2007

Biopsychosocial Profiles of Patients With Cardiac Disease in Remote Rehabilitation Processes : Mixed Methods Grounded Theory Approach

2021

Background: Digital development has caused rehabilitation services and rehabilitees to become increasingly interested in using technology as a part of rehabilitation. This study was based on a previously published study that categorized 4 groups of patients with cardiac disease based on different experiences and attitudes toward technology (e-usage groups): feeling outsider, being uninterested, reflecting benefit, and enthusiastic using. Objective: This study identifies differences in the biopsychosocial profiles of patients with cardiac disease in e-usage groups and deepen the understanding of these profiles in cardiac rehabilitation. Methods: Focus group interviews and measurements were c…

Classification of Targets Using Statistical Features from Range FFT of mmWave FMCW Radars

2021

Radars with mmWave frequency modulated continuous wave (FMCW) technology accurately estimate the range and velocity of targets in their field of view (FoV). The targeted angle of arrival (AoA) estimation can be improved by increasing receiving antennas or by using multiple-input multiple-output (MIMO). However, obtaining target features such as target type remains challenging. In this paper, we present a novel target classification method based on machine learning and features extracted from a range fast Fourier transform (FFT) profile by using mmWave FMCW radars operating in the frequency range of 77–81 GHz. The measurements are carried out in a variety of realistic situations, including p…

Conceptualizing the role of multidisciplinarity and student perceptions of university-industry collaboration in project-based learning

2017

Project-based learning has a long history, especially in the disciplines of computer science and engineering. This approach is used to offer students a realistic view of their discipline, and this experience can be enhanced with industrial involvement as companies bring their real world problems to projects. One recent trend in project-based learning is utilizing multidisciplinary teams, enabling students to contrast their skills and experience with students from other disciplines. This thesis focuses on a project course involving multidisciplinary teams and real customers that has been organized at the University of Jyväskylä since 2011 focused on developing students’ general working life …