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Showing 1 to 12 of 287 entries
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Affect in peer group learning during virtual science inquiry: Insights from Self-Reports and video observations

discipline specific-education (e.g., chemistry education, biology education, economics education)

Lehtinen E, Volet S.
GSID: o0e0QUwYLHsJ
T Pietarinen, S Volet, E Lehtinen, M Vauras - Frontiers in Psychology, 2020 - frontiersin.org

The purpose of this study was to explore affect in small groups learning together face-to-face in a virtual learning environment. The specific aims of the study were to establish how affect …

A study of the difficulties of novice programmers

science instructors

Järvinen HM, Lahtinen E.
GSID: 5M7wiuIXBRcJ
E Lahtinen, K Ala-Mutka, HM Järvinen - Acm sigcse bulletin, 2005 - dl.acm.org

Programming is related to several fields of technology, and many university students are studying the basics of it. Unfortunately, they often face difficulties already on the basic …

Computer supported collaborative learning: A review

Cultural Transformation in the Geoscience Community AND Program Evaluation

Hakkarainen K, Lehtinen E, Lipponen L.
GSID: B4SBfbbcgakJ
E Lehtinen, K Hakkarainen, L Lipponen… - The JHGI Giesbers …, 1999 - academia.edu

One of the basic requirements for education in the future is to prepare learners for participation in a networked, information society in which knowledge will be the most critical resource for social and economic development. Computer-supported collaborative learning (CSCL)...

Quantitative characterization of critical nanoclusters nucleated on large single molecules.

Physical review letters

Winkler PM, Vrtala A, Steiner G, Wimmer D, Vehkamäki H, Lehtinen KE, Reischl GP, Kulmala M, Wagner PE.
PMID: 22463542
Phys Rev Lett. 2012 Feb 24;108(8):085701. doi: 10.1103/PhysRevLett.108.085701. Epub 2012 Feb 23.

First order phase transitions involve nucleation, formation of nanoscale regions of a new phase within a metastable parent phase. Using the heterogeneous nucleation theorem we show how clusters formed by nucleation on single molecules evolve from the gas phase...

Realizing All so(N)_{1} Quantum Criticalities in Symmetry Protected Cluster Models.

Physical review letters

Lahtinen V, Ardonne E.
PMID: 26684140
Phys Rev Lett. 2015 Dec 04;115(23):237203. doi: 10.1103/PhysRevLett.115.237203. Epub 2015 Dec 03.

We show that all so(N)_{1} universality class quantum criticalities emerge when one-dimensional generalized cluster models are perturbed with Ising or Zeeman terms. Each critical point is described by a low-energy theory of N linearly dispersing fermions, whose spectrum we...

Sequential Monte Carlo Instant Radiosity.

IEEE transactions on visualization and computer graphics

Hedman P, Karras T, Lehtinen J.
PMID: 28362611
IEEE Trans Vis Comput Graph. 2017 May;23(5):1442-1453. doi: 10.1109/TVCG.2017.2676089. Epub 2017 Mar 01.

Instant Radiosity and its derivatives are interactive methods for efficiently estimating global (indirect) illumination. They represent the last indirect bounce of illumination before the camera as the composite radiance field emitted by a set of virtual point light sources...

Open-Ended Coaxial Dielectric Probe Effective Penetration Depth Determination.

IEEE transactions on microwave theory and techniques

Meaney PM, Gregory AP, Seppälä J, Lahtinen T.
PMID: 27346890
IEEE Trans Microw Theory Tech. 2016 Mar;64(3):915-923. doi: 10.1109/TMTT.2016.2519027. Epub 2016 Jan 29.

We have performed a series of experiments which demonstrate the effect of open-ended coaxial diameter on the depth of penetration. We used a two layer configuration of a liquid and movable cylindrical piece of either Teflon or acrylic. The...

Exploring the atomic structure of 1.8nm monolayer-protected gold clusters with aberration-corrected STEM.

Ultramicroscopy

Liu J, Jian N, Ornelas I, Pattison AJ, Lahtinen T, Salorinne K, Häkkinen H, Palmer RE.
PMID: 28342572
Ultramicroscopy. 2017 May;176:146-150. doi: 10.1016/j.ultramic.2016.11.021. Epub 2016 Nov 22.

Monolayer-protected (MP) Au clusters present attractive quantum systems with a range of potential applications e.g. in catalysis. Knowledge of the atomic structure is needed to obtain a full understanding of their intriguing physical and chemical properties. Here we employed...

[How many of us are depressed?].

Duodecim; laaketieteellinen aikakauskirja

Lehtinen V.
PMID: 7555811
Duodecim. 1994;110(3):217, 219-20.

No abstract available.

Scaling of random spreading in small world networks.

Physical review. E, Statistical, nonlinear, and soft matter physics

Lahtinen J, Kertész J, Kaski K.
PMID: 11736146
Phys Rev E Stat Nonlin Soft Matter Phys. 2001 Nov;64(5):057105. doi: 10.1103/PhysRevE.64.057105. Epub 2001 Oct 25.

In this study we have carried out computer simulations of random walks on Watts-Strogatz-type small world networks and measured the mean number of visited sites and the return probabilities. These quantities were found to obey scaling behavior with intuitively...

Toward direct measurement of atmospheric nucleation.

Science (New York, N.Y.)

Kulmala M, Riipinen I, Sipilä M, Manninen HE, Petäjä T, Junninen H, Maso MD, Mordas G, Mirme A, Vana M, Hirsikko A, Laakso L, Harrison RM, Hanson I, Leung C, Lehtinen KE, Kerminen VM.
PMID: 17761851
Science. 2007 Oct 05;318(5847):89-92. doi: 10.1126/science.1144124. Epub 2007 Aug 30.

Atmospheric aerosol formation is known to occur almost all over the world, and the importance of these particles to climate and air quality has been recognized. Although almost all of the processes driving aerosol formation take place below a...

Activities and ways of organizing better occupational health and safety in small workplaces: special focus on information.

Industrial health

Lehtinen S.
PMID: 16610526
Ind Health. 2006 Jan;44(1):13-6. doi: 10.2486/indhealth.44.13.

Information is needed in all activities aiming at the development and improvement of working conditions. The information and communication technology has made it possible to have information available 24 h a day, 360 d a year. The administrative structures...

Showing 1 to 12 of 287 entries