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Rezultati raziskav odprtega dostopa

FTIR analysis of chemical changes in wood induced by steaming and longitudinal compression

Mátyás Báder, Róbert Németh, Jakub Sandak, Anna Sandak
Infrared spectroscopy Lignin Hemicellulose Cellulose Pleating process Hygroscopic properties

Pleating is an optimal way to increase bendability of wood used in diverse industrial applications. It results in the excessive buckling of cell walls and modifications of constitutive polymers. However, thoughtful understanding of the physical–chemical mechanisms of that modification process...

Non realizable degree sequences of dual graphs on surfaces

Vladimir Gurvich, Endre Boros, Martin Milanič, Jernej Vičič

A thorough set on non-realizable degree sequences of dual graphs on surfaces for number of edges up to (including) 7. Source code of the implemented algorithm is included.


Piotr Taube, Kazimierz A. Orłowski, Daniel Chuchała, Jakub Sandak
pine log sorting method log quality shape scanner sawmill

The optimal transformation path for the resource is determined by the quality of a log combined with its dimension. The commercial value of derived products is also closely connected with the size and extent of containing wood deficiencies. The results of studies with three diverse strategies...

Densified wood impregnated with phenol resin for reduced set-recovery

Matthew Schwarzkopf
Wood Material Science & Engineering
THM wood modification impregnation densification

Thermal-hydro-mechanical (THM) densification treatments were performed on Populus spp. (poplar), Picea abies (spruce), and Fagus sylvatica (beech). Prior to THM treatment, a low-molecular weight resin was impregnated into the wood structure. Densification results, mechanical characteristics...

Proactive and reactive context reasoning architecture for smart web services

Nawel Sekkal, Sidi Mohamed Benslimane, Michael Mrissa, Cheol Young Park, Boudjemaa Boudaa
International Journal of Data Mining, Modelling and Management
smart web service the web of things context reasoning proactive reactive multi-entity Bayesian networks MEBNs PR-OWL

The web of things (WoT) uses web technologies to connect embedded objects to each other and to deliver services to stakeholders. The context of these interactions (situation) is a key source of information which can be sometimes uncertain. In this paper, we focus on the development of...

Seismic Design of Timber Buildings: Highlighted Challenges and Future Trends

Mislav Stepinac, Iztok Šušteršič, Igor Gavrić, Vlatka Rajčić
seismic design tall timber buildings timber composites seismic retrofitting Eurocode 8

Use of timber as a construction material has entered a period of renaissance since the development of high-performance engineered wood products, enabling larger and taller buildings to be built. In addition, due to substantial contribution of the building sector to global energy use, greenhouse...


Mislav Stepinac, Filip Borak, Iztok Šušteršič, Igor Gavrić
potres earthquake rizik risk hazard osjetljivost vulnerability eneregetske metode energy-based design

This paper gives a brief overview of the current design of earthquake resistant structures. The paper presents and summarizes the latest insights regarding the design of earthquake resistant buildings, with the most basic examples and a critical review of the current state of regulations and the...

Micromechanical properties of beech cell wall measured by micropillar compression test and nanoindentation mapping

Petr Klímek, Václav Sebera, Darius Tytko, Martin Brabec, Jaroslav Lukeš
beech cell wall mechanical properties micropillar compression nanoindentation

Wood exhibits very different behavior and properties at different scales. One important scale is the cell wall (CW) that is commonly tested by nanoindentation. Common nanoindentation provides important insight into the material but has limitations because it does not apply uniaxial stress and...

The webinar will introduce researchers to key concepts in research data management, present resources that can be used when preparing a research data management plan and outline present best practices of sharing data in a responsible way in line with FAIR principles. The webinar will be lead by...

Dr. Ana Slavec je svetovalka za statistiko in raziskovalka na InnoRenew CoE Centru odličnosti za raziskave ter inovacije na področju obnovljivih materialov in zdravega bivanjskega okolja. Je ambasadorka Združenja za raziskovalne podatke RDA Evropa za področje tehnike – obnovljivih...

Development of Low-Cost Portable Spectrometers for Detection of Wood Defects

Jakub Sandak, Anna Sandak, Andreas Zitek, Barbara Hintestoisser, Gianni Picchi
NIR spectroscopy wood defects portable instruments in-filed measurement

Portable spectroscopic instruments are an interesting alternative for in-field and on-line measurements. However, the practical implementation of visible-near infrared (VIS-NIR) portable sensors in the forest sector is challenging due to operation in harsh environmental conditions and natural...

In this data repository, data related to the study Thermal Comfort and Perception of Different Materials for Tabletops  is deposited, and includes datasets, processing code, and supplementary tables.  

Best practices for using spreadsheets in research data management

Ana Slavec
data management spreadsheets Excel functions pivot tables

Presentation about best practices for using (Excel) spreadsheets to manage research data. 

Research data management for data on renewable materials and products

Ana Slavec
data management renewable materials FAIR data

The purpose of the workshop is to introduce researchers to key concepts in research data management and teach them how to share data in a responsible way in line with FAIR principles. Participants will also learn about best practices for using spreadsheets to manage their data. They need to...

Data management plan (DMP) for postdoctoral project on Using questionnaires to measure attitudes and behaviours of building users. The plan has the following sections: Data Collection, Documentation and Metadata, Ethics and Legal Compliance, Storage and Backup, Selection and Preservation, Data...

Cavitation as a Potential Technology for Wastewater Management – An Example of Enhanced Nutrient Release from Secondary Pulp and Paper Mill Sludge

Mija Sežun, Janko Kosel, Mojca Zupanc, Marko Hočevar, Janez Vrtovšek, Martin Petkovšek, Matevž Dular
Strojniški vestnik – Journal of Mechanical Engineering

This study investigates efficiency of hydrodynamic cavitation alone and in combination with the addition of NaOH for the treatment of secondary pulp and paper mill sludge in order to enhance nutrient release. First, two laboratoryscale devices were tested: the blow-through and the rotating...

Vključevanje družboslovnih raziskav v dediščinsko znanost

Ana Slavec
kulturna dediščina družboslovne raziskave cultural heritage social science research

Predstavitev dveh primerov družboslovnih raziskav povezanih z dediščinsko znanostjo: ankete o razmerah hranjenja muzejskih predmetov (v okviru projekta Razvoj naprednih materialov za varstvo kulturne dediščine) in raziskave o družbenih mehanizmih vključevanja zainteresirane javnosti v...

Gamification in Education and Learning

Nežka Sajinčič, Anna Sandak, Andreja Istenič Starčič
basic psychological needs education engagement game elements gamification motivation self-determination theory

Gamification is the application of game design elements in a non-gaming environment to promote outcomes, such as enhanced motivation, engagement, performance, and behaviour alteration. As such, it seems a valuable and innovative tool to implement in education and assist students in their...

Design of bio based carbonaceous fibrous structures as catalysts in fuel cells

Silvo Hribernik, Mojca Božič, Selstina Gorgieva, David Brian DeVallance

Poster presented at 8th European Fuel Cell, Piero Lunghi Conference, Naples, 9-11 December, 2019

Conference abstract for an oral presentation in Session OA.05 session at the 3rd INTERNATIONAL CAPARICA CHRISTMAS CONFERENCE ON TRANSLATIONAL CHEMISTRY.

Načrti za podatke o obnovljivih materialih in produktih

Ana Slavec
data management upravljanje podatkov renewable materials obnovljivi materiali

InnoRenew CoE Center odličnosti za raziskave in inovacije na področju obnovljivih materialov in zdravega bivanjskega okolja je neodvisni raziskovalni inštitut, ki je bil ustanovljen februarja 2017 in je eden izmed devetih partnerjev v projektu InnoRenew v okviru programa Obzorja 2020 (H2020...

Introduction of biochar for the manufacture of flax conductive fabrics

Laetitia Marrot, Natalie Vellguth, Jana Winkelmann, Marco Wolf, David B. DeVallance
Biochar Conductive fabrics E-textile Flax Renewable

Conference abstract for International Conference on Intelligent Textiles & Mass Customisation.

On the König deficiency of zero-reducible graphs

Miklós Bartha, Miklós Krész
Journal of Combinatorial Optimization
Graph matching Independent set König property Graph reduction Graph algorithm

A confluent and terminating reduction system is introduced for graphs,which preserves the number of their perfect matchings. A union-find algorithm is presented to carry out reduction in almost linear time. The König property is investigated in the context of reduction by introducing the König...

Using 3D digital image correlation in an identification of defects of trees subjected to bending

Jan Tippner, Luděk Praus, Martin Brabec, Václav Sebera, Barbora Vojáčková, Jaromír Milch
Urban Forestry & Urban Greening
Arboriculture Optical non-contact assessment Pulling test Strain Tree defect Tree-root system

Abrupt changes of climate have intensified during the last few decades, bringing higher risks from tree failures by either uprooting or stem breakage. To eliminate the risks, many techniques of tree assessment are being used. In the presented work, an optical technique based on 3D Digital Image...

Conference abstract for 15th Miklós Iványi International PhD & DLA Symposium.

Traffic load simulation for different sensor placements

László Hajdu, Dávid Balázs, Miklós Krész
wireless sensor network simulation framework load minimization

Conference abstract for 15th Miklós Iványi International PhD & DLA Symposium.

In this work we present a new rotation cavitation generator that is capable of energy efficient refining of conifer rich pulp samples in paper pulp industry.

In-situ penetration of ionic liquids into surface-densified Scots pine

Benedikt Neyses, Kelly Peeters, Lauri Rautkari, Michael Altgen
compressed wood wood modification chemical treatment green chemistry confocal Raman microscopy

Conference abstract for 62nd International Convention of Society of Wood Science and Technology  

Conference abstract for 62nd International Convention of Society of Wood Science and Technology  

The Forest for the Trees: Understanding the Experiences of Female PhDs in Forestry-Related Academia

Amy Simmons
gender gap forestry academia science technology engineering and mathematics (STEM) gender diversity gender disparity

Conference abstract for 62nd International Convention of Society of Wood Science and Technology  

Conference abstract for 62nd International Convention of Society of Wood Science and Technology  

Conference abstract for 62nd International Convention of Society of Wood Science and Technology  

Conference abstract for 62nd International Convention of Society of Wood Science and Technology

Conference abstract for 62nd International Convention of Society of Wood Science and Technology  

.An article on circular economy.


Eva Prelovšek Niemelä, Aarne Niemelä
Architecture InnoRenew CoE Horizon 2020

An article on architecture.


Iztok Šušteršič
engineered wood tall wooden buildings damping mass distribution

An article on tall timber buildings.


Aarne Johannes Niemelä
wooden construction governmantal support Finnland

An article on promoting wooden construction in urban scale.

An article about a new research project called CLICKdesign.

Wooden buildings of the demanding dimensions

Janez Koželj, Eva Prelovšek Niemelä, Jure Kotnik, Lenka Kavčič, Iztok Šušteršič
sustainable transformation wood construction tall wooden buildings

An article about wood construction.

Reverse mentoring as an alternative strategy for lifelong learning in the workplace

Nežka Sajinčič, Andreja Istenič Starčič, Anna Sandak
reverse mentoring older workers lifelong learning intergenerational learning

Conference abstract for Second Sheld-on conference meeting

Vizija evropskega gozdno lesnega sektorja do leta 2040

Andreja Kutnar, Črtomir Tavzes
diversification of production technologies circular society natural resources non-timber forest ecosystem services renewable energy renewable materials sustainable use of wood sustainable forest management fibers

Preparing an EU Framework Program is a difficult task and the European Commission cooperates with a large number of stakeholders in these processes. These include European Technology Platforms. For the timber sector, this is the European Forest-based Sector Technology Platform (FTP). Since its...

A two-stage heuristic for the university course timetabling problem

Máté Pintér, Balázs Dávid
University course timetabling Local search Heuristic

This paper presents a two-stage solution method for the curriculum-based university course timetabling problem. First, an initial solution is created using a recursive search algorithm, then its quality is improved with a local search heuristic. This method utilizes a tabu list of forbidden...

In this paper we provide empirical results on training a neural network with a genetic algorithm. We test various features of the generalized genetic algorithms, namely spieciation and fitness sharing and present the statistical analysis of all three variations. An obstacle avoidance problem was...

Bio-based building envelops - challenges and perspectives

Anna Sandak, Jakub Sandak
façades biomaterials sustainable design

The recently observed tendency for development of sustainable structures and increasing environmental consciousness leads to reactivation of bio-architecture as an alternative to other construction materials. Very often, focus on sustain- able construction principles requires the use of local...

A Tabu Search Method for Optimizing Heterogeneous Structural Frames

Balázs Dávid
structural frames structural design tabu search mathematical model

Structural design is responsible for the design and development of structural plans. It consists of multiple steps that have to be performed sequentially. As the output of a step acts as an input for the next one, using optimization tools to aid the design process can help in achieving a better...

Minimizing Human Stress in Social Networks with Targeted Interventions

Dean Lipovac, László Hajdu, Sølvi Therese Strømmen Wie, Anders Qvale Nyrud
human stress social networks network science social contagion infection model

Chronic stress in humans can substantially impair functioning of organizations. As stress can spread through social networks, psychosocial interventions targeted at the most contagious people can efficiently improve organizational functioning. On the example of employees working in healthcare...

On the Complexity of a Filtering Problem for Constraint Programming: Decomposition by the Structure of Perfect Matchings

Radoslaw Cymer, Miklós Krész
constraint programming matching theory decomposition theory

A complexity analysis based on the structure of perfect matchings is given for the most efficient basic filtering algorithms in constraint programming with respect to the role of edges in matchings.

Methodological challenges of measuring innovation activities of micro companies

Ana Slavec, Michael D. Burnard, Barbara Rovere
innovation forest-based value chain micro companies survey data standardized bias

Slovenia was identified as a region lagging in innovation and this is particularly noticeable in the country's forest-based value chain. However, Slovenia's Smart Specialisation Strategy identified this industry as having a strong potential for growth. To leverage the innovation and...

Low back pain (LBP) is common in children and adolescents. Several risk factors have been proposed, including prolonged sitting. The aim of this study was to review the literature on association between sitting/sedentary time or specific sedentary behaviour and LBP in children and...

Suitability of classroom furniture

Nastja Podrekar, Kaja Kastelic, Nejc Šarabon

Considering the amount of time students spend in the classroom predominantly in a sitting position, school furniture plays a key role in maintaining and promoting good posture. The aim of the study was to evaluate the mismatch between the existing classroom furniture and students’...


M. Erwin Schau
packaging paper wood Product Environmental Footprint (PEF) Category Rules (PEFCR) life cycle assessment (LCA) circular economy paper pilot

Between 2013 and 2018, the paper industry, together with the European Commission and Non-Governmental Organisations (NGOs), developed the Product Environmental Footprint (PEF) Category Rules (PEFCR) for intermediate paper products as part of the EU Environmental Footprint (EF) pilot phase. Based...


M. Erwin Schau, Anna Sandak, Jakub Sandak, Lone Ross Gobakken
paper products wood carbon footprint, Product Environmental Footprint (PEF) life cycle assessment (LCA) cascading use circular economy

Humanity has only 12 years to start a deep decline in emissions of Greenhouse gases in order to prevent dangerous, non-reversible climate change. Cascading use of wood might be a way to mitigate climate change. In this contribution, we investigate how the cascading use of wood from demolished...

Investigating face veneer check development in decorative plywood panels: the impact of four common manufacturing factors

Michael Burnard, Scott Leavengood, Lech Muszyński, Lisa Ganio
European Journal of Wood and Wood Products

An optical method based on digital image correlation was used to investigate the impact of four decorative plywood manufacturing factors (core type, veneer type, adhesive type and lathe check orientation) on face veneer checking. The four core types were: combination core, medium density...

Monitoring Environmental and Health Impact Data in BIM Models to Assure Healthy Living Environments

Anja Jutraž, Andreja Kukec, Peter Otorepec, Ladi Lampič, Jure Pohleven, Jakub Sandak, Katja Malovrh, Monika Varkonji Sajn
Building Information Modeling (BIM) environmental impact data indoor comfort health impact data healthy living environment

Health is our wealth and we are rarely aware that the choice of living and working environment affects us. We spend most of our time in indoor environments so the quality of indoor air plays an important role in the maintenance of health and well-being. Moreover, Building Information Modeling...

A Blockchain-based Decentralized Self-balancing Architecture for the Web of Things

Aleksandar Tošić, Jernej Vičič, Michael Mrissa
Edge computing Internet of Things Decentralized applications Blockchain

Edge computing is a distributed computing paradigm that relies on the computational resources of end devices in a network to bring benefits such as low bandwidth utilization, responsiveness, scalability and privacy preservation. Applications range from large scale sensor networks to IoT, and...

Numerical modeling of wood-adhesive bond-line in mode II for spruce wood glued by various adhesives

Václav Sebera, Jaka Gašper Pečnik, Boris Azinovič, Miha Kramar
mode II spruce wood finite element analysis crack propagation adhesive bond

Bond-line creates an interface between two glued surfaces and, therefore, its brings additional complexity into the mechanical behavior of glued component, especially around the bond-line region because an adhesive has a very different response to a mechanical stress than wood. From this...

Human stress responses in office-like environments with wood furniture

Michael David Burnard, Andreja Kutnar
Building Research & Information
healthy offices occupant stress timber materials indoor environment wellbeing

Stress is a major public health concern and work stress is a contributor to both acute and chronic stress. Moreover, most people spend the majority of their time indoors. It follows that the design of office spaces and other interior environments should consider the health impacts of individuals...

Vision System for On-line Monitoring of Wood Surface Roughness

Jakub Sandak, Kazimierz A. Orlowski, Anna Sandak, Daniel Chuchala, Piotr Taube
wood surface roughness triangulation scanner surface defects on-line at-line

The latest development in the field of optics and microelectronics resulted in a new generation vision system capable of scanning surface topography with very high sampling frequencies. The blue color of illuminating light as well as novel systems for controlling ultra-thin laser line thickness...

Shear-wave electrography (SWE) is a method used to assess tissue elasticity. Recently, it has been used to assess muscle stiffness, but the reliability of SWE for this purpose has not been thoroughly investigated. The purpose of this study was to evaluate the repeatability and reproducibility of...

Application of GRAS Compounds for the Control of Mould Growth on Scots Pine Sapwood Surfaces: Multivariate Modelling of Mould Grade

Olena Myronycheva, Faksawat Poohphajai, Margot Sehlstedt-Persson, Tommy Vikberg, Olov Karlsson, Helmut Junge, Dick Sandberg
bacteria potassium silicate N-Alkylbensyldimethylammonium chloride wood fungi mould area PLS modeling

In this study, the Generally Recognised as Safe (GRAS) compounds were applied in order to study mould-fungi growth on dried Scots pine sapwood. Background and Objectives: The transition to the use of more sustainable wood-material may be possible by applying GRAS compounds that can control and...

Discovering the Hidden Community Structure of Public Transportation Networks

László Hajdu, András Bóta, Miklós Krész, Alezira Khani, Lauren M. Gardner
Networks and Spatial Economics
Network modeling Public Transportation Community Structure Infrastructure security

Advances in public transit modeling and smart card technologies can reveal detailed contact patterns of passengers. A natural way to represent such contact patterns is in the form of networks. In this paper we utilize known contact patterns from a public transit assignment model in a major...

These files contain the data processing code (in R) used in an experiment comparing stress responses in different office-like environments. The experiment used salivary cortisol concentration as the primary indicator of stress and the analytical processing includes converting plate readings to...

Volatile organic compounds emitted from untreated and thermally modified wood - a review

Jure Pohleven, Michael David Burnard, Andreja Kutnar
Wood and Fiber Science
wood thermally modified wood volatile organic compounds VOCs emissions

Volatile organic compounds (VOCs) are a diverse group of compounds that can have a strong impact on indoor air quality.Wood and thermally modified wood emit VOCs, which are referred to as wood VOCs, and can elicit various negative or positive effects in different organisms, including humans....

Low-cost capillary electrophoresis instrumentation for assessment of rain water ionic composition

Jakub Sandak, Jelena Gorbatsova, Piret Saar-Reismaa, Mihkel Kaljurand
capillary electrophoresis rain water ionic composition COST Action CA16215

The objective of this Short Term Scientific Mission was to test the suitability of capillary electrophoresis for determination of rain water chemical composition. The fully functional, open-hardware, low-cost instrument was assembled and tested. An original protocol for determination of the...

Shear response of isolated angle brackets for cross-laminated timber buildings

Boris Azinović, Miha Kramar, Tomaž Pazlar, Meta Kržan
Sound-insulation bedding insulated steel angle bracket shear behaviour experimental assessment equivalent viscous damping

In cross-laminated timber (CLT) buildings, acoustic behaviour presents a major concern due to low frequency noise transmission. To reduce the disturbing sound transmission over the flanking parts, special elastic layers with fine celled structure are being used between the CLT wall and CLT slab...

Assessment of extended retted hemp fibres for composite reinforcement: fibre properties and adhesion with polyactide matrix

Laetitia Marrot, Percy Festus Alao, Heikko Kallakas, Triinu Poltimäe, Jaan Kers
hemp fibres polyactide (PLA) matrix

This study investigates the potential value of extended retted hemp fibres as a reinforcement of the polyactide (PLA) matrix. The hemp stems (Hungarian Tisza variety) underwent a particular retting consisting of harvesting them only 6 months after the end of cultivation, leaving them in a...

Uniquely restricted (g, f )-factors

Miklós Krész
graph theory

Conference abstract for 9th Slovenian International Conference on Graph Theory

Lignin colloidal particles as adhesives in bio-composites

Silvo Hribernik, David Brian DeVallance, Tanja Kos, Manja Kurečič, Karin Stana Kleinschek

Abstract of a presentation given at 9th International Colloids Conference, June 16-19 2019, Sitges, Spain

Prolonged sitting is widely recognized as a risk factor for low back disorders and low back pain. Several harmful mechanisms have been proposed, affecting intervertebral discs, posterior lumbo-pelvic ligaments and fasciae, and muscles of the lumbo-pelvic-hip complex. Sitting position is commonly...

Shift work is a well-known risk factor for several non-communicable diseases. However, little is known about how shift work affects daily activity behaviours and dietary pattern. The aim of this study was to test the effect of work shift on time spent sleeping, in sedentary behaviour and...

The impact of fire effluents on cultural heritage objects

Lea Legan, Klara Retko, Maša Kavčič, Friderik Knez, Polonca Ropret

This research focuses on preparation of model samples with traditional paints and binders, exposure of the samples to effluents from burning different wood fuels, and utilisation of analytical techniques for assessment of chemical changes of the samples.



Wood protection techniques and natural weathering: their effect on aesthetics and preference of people

Dean Lipovac, Michael D. Burnard, Anna Sandak, Jakub Sandak
wood protection weathering aesthetics preference

Wood treatments change the tactile and visual properties of wood substantially and they are further altered by weathering. No matter how useful the wood treatment is, people will be reluctant to select materials they do not find appealing. For this reason, many valuable wood protection...

This repository contains additional files related to the review and meta-analysis. The first dataset contains list of search terms. The second dataset contains list od studies included in the meta-analysis. The third dataset contains study evaluation using PEDro scale tool. The fourth dataset...

Beehive panel paintings: Material characterisation

Klara Retko, Maša Kavčič, Lea Legan, Domen Kranjc, Ana Penko, Črtomir Tavzes, Polonca Ropret

Four different painted beehive panels dating from the beginning of the 19th to the second half of the 20th century were selected for this study. This type of paintings was predominantly created by the lower (rural) classes and as such represents a variety of folk art [1]. This panels were...

Study of the influencing effect of fire effluents on the proteinaceous paint layers

Lea Legan, Klara Retko, Ana Penko, Maša Kavčič, Friderik Knez, Polonca Ropret

Fire disasters can pose a great threat to cultural heritage objects. The consequences of fire flames and fire effluents (FE) are almost always disastrous and still represent uncertainty regarding how and to what extent they affect the environment. Furthermore, their negative effect can continue...

Comparison of Self-Reported Sedentary Time on Weekdays with an Objective Measure (activPAL)

Kaja Kastelic, Nejc Šarabon
Measurement in Physical Education and Exercise Science
validity bias error concordance sedentary lifestyle

Self-reports are commonly used tools for obtaining sedentary behaviors. The aim of our study was to assess agreement between two self-reports of sedentary time and a gold standard sedentary time objective monitor. A worksite sample (n = 42) completed the Slovenian version of the Global Physical...

Assessment of the chemical change in heat treated pine wood by near infrared spectroscopy

Zuzana Vidholdová, Anna Sandak, Jakub Sandak
Pine Heat treatment xylograms FT-NIR

Fourier-transform near-infrared spectroscopy (FT-NIR) was used as none-destructive method to determinate changes in the chemical structure of heat-treated wood. For this purpose, pine sapwood (Pinus sylvestris L.) was treated at different temperatures (from 100 °C to 240 °C) and for three...

Glued-in rods in cross laminated timber – Numerical simulations and parametric studies

Boris Azinović, Henrik Danielsson, Erik Serrano, Miha Kramar
Construction and Building Materials
Glued-in rods Cross laminated timber (CLT) Parametric study Nonlinear numerical modelling Glued-in length Rod diameter Rod orientation

Numerical simulations and parametric studies of glued-in rods in cross-laminated timber have been performed. The simulations were based on 3D finite element analysis, using a cohesive surface model for the bond-lines between the laminations and the bond-line along the rod. The parametric studies...

Enabling innovation in the European construction sector: A case study in open innovation

Barbara Rovere, Michael Burnard, Andreja Kutnar, Eric Hansen
open innovation, construction europe Slovenia

Poster presented at the 5th Annual World Open Innovation Conference held in Berkeley, California 13-14 December 2018

The presentation highlights the main ergonomic guidelines for the design of home, work and school furniture and the environment.

This book presents Slovenian science from the perspective of two recognised scientists and scientific observers. 

Thermally modified (TM) beech wood: compression properties, fracture toughness and cohesive law in mode II obtained from the three-point end-notched flexure (3ENF) test

Václav Sebera, Miguel Redón-Santafé, Martin Brabec, David Děcký, Petr Čermák, Jan Tippner, Jaromír Milch
beech brittleness of wood cohesive law compliance-based beam method (CBBM) compressive elastic modulus digital image correlation (DIC) equivalent crack length approach (ECLA) fracture mode II thermal modification thermally modified wood (TMW) three-point end-notched flexure (3ENF)

The fracture properties of thermally modified beech (Fagus sylvatica) wood (TMW) at 180° and 200°C were evaluated in mode II using the three-point end-notched flexure (3ENF) scheme assisted by threedimensional (3D) stereovision equipment for obtaining displacements and strains. The...

The presentation highlights novel approaches to active ageing in outdoor Environments.

Development of a Sensorized Timber Processor Head Prototype – Part 1: Sensors Description and Hardware Integration

Jakub Sandak, Anna Sandak, Stefano Marrazza, Gianni Picchi
timber quality processor head sensors NIR cutting forces

Forest operations are in constant development to provide increasingly higher standards of economic and environmental sustainability. The latest innovation trends are concentrated in the generation, storage and management of data related to the harvesting process, timber products and logistics...

Bio-based building skin

Anna Sandak, Jakub Sandak, Marcin Brzezicki, Andreja Kutnar
Environmental Footprints and Eco-design of Products and Processes

This book provides a compendium of material properties, demonstrates several successful examples of bio-based materials’ application in building facades, and offers ideas for new designs and novel solutions. It features a state-of-the-art review, addresses the latest trends in material...

Damage progression analysis in a historical timber framed wall under cyclic loads through an image-based tracking method

Jakub Sandak, Mariapaola Riggio, Nicola Ruggieri, Anna Sandak
Construction and Building Materials
Image-based tracking Cyclic loads Damage progression Historical timber-framed wall

The scope of this paper is to analyse local phenomena associated with the damage progression and postelastic behaviour of a historical timber-framed wall system under cyclic loads. It was assessed on series of points identified on the wall by processing time-resolved sequences of images....

Effects of cycle and treadmill desks on energy expenditure and cardiometabolic parameters in sedentary workers: review and meta-analysis

Nastja Podrekar, Žiga Kozinc, Nejc Šarabon
International Journal of Occupational Safety and Ergonomics
active workstation bike desk walking desk workplace ergonomics workplace intervention

Purpose. The aim of this article was to evaluate the effects of cycle and treadmill desks on energy expenditure and car- diovascular and biochemical indicators in sedentary workers. Materials and methods. In February 2018, six databases were searched. Both parallel and crossover design studies...

Manufacturing fit-for-purpose paper packaging containers with controlled biodegradation rate by optimizing addition of natural fillers

Anna Sandak, Jakub Sandak, Izabela Modzelewska
waste paper paper pots cereal bran degradation rate soil FT-NIR

Natural fillers were utilized for manufacturing horticultural packaging products. Five types of pots produced from waste paper with wheat and rye bran additions were compared with commercially available containers. The aim was to examine the influence of soil type on the degradation rate and...

Chemical and appearance changes of wood due to artificial weathering – Dose–response model

Marta Petrillo, Jakub Sandak, Paolo Grossi, Anna Sandak
Journal of Near Infrared Spectroscopy
wood weathering dose–response model multi-sensor measurement near infrared colour gloss

The aim of this study was to assess a model for the surface degradation kinetics of natural wood exposed to artificial weathering. The photochemical and physical processes of weathering result in simultaneous changes of both the wood matrix composition (i.e. lignin content, cellulose...

This repository contains raw data from experiments investigating the reliability of shear-wave elastography (SWE) to assess muscle stiffness. The first dataset contains meat specimen experiments (using porcine meat specimens). The second and third datasets contain the measurements of...

The effect of sedentary work on trunk functions – in context of older employees

Kaja Kastelic, Matej Voglar, Nejc Šarabon
sensory-motor trunk functions sitting workplace lower back pain

Aging of the (active) population bring many challenges, which mainly results from a lack of health. The aim of our study was to test, whether there are differences in sensory-motor trunk functions between younger and older employees. We also tested whether work influence them differently. Fifty...

Experimental and numerical analysis of fracture toughness of thermally modified beech in mode II

Václav Sebera, Miguel Redon, Martin Brabec, David Děcký, Petr Čermák, Jaromír Milch, Jan Tippner
thermally modified beech fracture toughness crack digital image correlation finite element analysis

Conference abstract for Final COST Action FP1407 International Conference - Living with modified wood

Durability of modified wood and bio-based materials under outdoor conditions

Heikko Kallakas, Kevin Visnapuu, Triinu Poltimäe, Jaan Kers, Anna Sandak
modified wood bio-based materials natural weathering durability façade performance

Conference abstract for Final COST Action FP1407 International Conference - Living with modified wood

Strategies for improvement of visibility and acceptance of modified wood

Anna Sandak, Viviana Golja, Julia Belda, Jens Geissmann-Fuchs, Kelly Peeters, Jakub Sandak, Janja Juhant Grkman, Silvo Hribernik, Dean Lipovac, Peter Nadrah
modified wood interaction with materials human perception product visibility

Conference abstract for Final COST Action FP1407 International Conference - Living with modified wood

Human interaction with wood – what to measure, how to measure?

Anna Sandak, Jakub Sandak, Agnieszka Landowska, Veronika Kotradyová
wood perception wearable sensors preference test

Conference abstract for Final COST Action FP1407 International Conference - Living with modified wood

Wood protection from the olive industry

Matthew Schwarzkopf, Michael Burnard
modification olive oil protection wood

Conference abstract for Final COST Action FP1407 International Conference - Living with modified wood

Conference abstract for Final COST Action FP1407 International Conference - Living with modified wood

Review: wood modification techniques based on cell wall bulking with non-toxic chemical reagents

Kelly Peeters, Emmanuel Fredon, Philippe Gérardin, Charlotte Grosse, Callum A.S. Hill, Clément L'Hostis, Miha Humar, Dennis Jones, Erik Larnøy, Marion Noël, Anna Sandak
cell wall bulking esterification reaction Maillard reaction non-toxic reagents wood modification

Conference abstract for Final COST Action FP1407 International Conference - Living with modified wood

Can modified wood compete with untreated wood in preference of people?

Dean Lipovac, Michael D. Burnard, Andreja Kutnar, Anna Sandak
wood modification perception evaluation preference well-being

Conference abstract for Final COST Action FP1407 International Conference - Living with modified wood

Assessment of lignocellulosic-substrate fungi-based materials

Laetitia Marrot, Marica Mikuljan, Franc Pohleven
fungi wood hemp lignocellulosic

Conference abstract for Final COST Action FP1407 International Conference - Living with modified wood

Konstrukcijski spoji z vlepljenimi palicami v križno lepljenem lesu

Boris Azinović, Erik Serrano, Miha Kramar, Tomaž Pazlar
križno lepljen les konstrukcijski spoji vlepljene palice natezni preizkus

Vlepljene palice predstavljajo zanimivo rešitev stikovanja nosilnih lesenih elementov, s številnimi ugodnimi lastnostmi kot so visoka nosilnost, dobra požarna odpornost, prilagodljivost z arhitekturnega vidika, idr. Kljub številnim prednostim, je uporaba vlepljenih palic v praksi...

Data management at the InnoRenew CoE

Ana Slavec, Michael D. Burnard, Andreja Kutnar
data management InnoRenew CoE

The InnoRenew CoE Renewable Materials and Healthy Environments Research and Innovation Centre of Excellence is a young interdisciplinary research institute with two key research areas: wood modification and restorative environmental and ergonomic design. It was established as part of the...

Human health research at the InnoRenew CoE

Michael Burnard, Jure Pohleven, Dean Lipovac, Nastja Podrekar
Human Health built environment wood buildings restorative environmental and ergonomic design mental wellbeing ergonomics active aging volatile organic compounds

An overview of ongoing research at the Innorenew CoE to improve human health in the built environment (Fall/Winter 2018). Presented at the 2018 SWST/JWRS International Convention in Nagoya, Japan.

A healthy lifestyle includes many factors. One of the main ones is sufficient physical activity, which positively affects many health-related parameters: it reduces the risk of cardiovascular and metabolic diseases, musculoskeletal disorders, and promotes the individual's mental abilities....

Fracture toughness of thermally modified wood in mode II

Václav Sebera, Miguel Redon, Martin Brabec, David Děcký, Petr Čermák, Jaromír Milch, Jan Tippner
fracture toughness thermal modification mode II digital image correlation end-notched test

Conference abstract for 8th Hardwood Conference

Conference abstract for 8th Hardwood Conference

Extended Utilization of Forest Production & Wood Material: Hardwood Usage from Native Properties to Wood Modification

Peter Rademacher, Radim Rousek, Petr Pařil, Jan Baar, Stanislav Horníček, Zuzana Paschová, Róbert Németh, Tamás Hofmann, Fanni Fodor, Gerald Koch, Andreja Kutnar
Extended biomass production lesser used wood species wood modification high use value for recovered wood wood based panels renewable sources for adhesives

Conference abstract for 8th Hardwood Conference

European Hardwoods Innovation Alliance: first results of a European survey on hardwoods research needs and priorities

Barbara Rovere, Ana Slavec, Uwe Kies
innovation scientific collaboration social network analysis survey

Conference abstract for 8th Hardwood Conference

Static and dynamic performance of wood modified with phenol formaldehyde

Jaka Gašper Pečnk, Hannes Schwager, Matthew Schwarzkopf, Holger Militz
fatigue life stress level phenol formaldehyde chemical modification

Conference abstract for 8th Hardwood Conference

Hemp in Slovenia: challenges and opportunities

Laetitia Marrot
hemp fibres Slovenia renewable

The poster describes the environmental advantages of using hemp, the mechanical properties of the hemp fibres, the extend of the cultivation of hemp in Slovenia and Europe, the hurdles encountered in Slovenia and the envisioned work

Experimental investigation of the axial strength of glued-in rods in cross laminated timber

Boris Azinović, Erik Serrano, Miha Kramar, Tomaž Pazlar
Materials and Structures
Glued-in rods Cross laminated timber (CLT) Pull–pull experiment Glued-in length Rod-to-grain angle Failure mechanisms in CLT

The paper presents results from an experimental assessment of glued-in rods in cross laminated timber (CLT). For the purposes of the study more than 60 pull–pull tests were performed, where the specimens varied in terms of bonded-in length (from 80 to 400 mm), rod diameter (16–24 mm) and...

Is sedentary behavior increasing with age?

Podrekar Nastja, Kozinc Žiga, Šarabon Nejc
sedentary behavior young workers, older workers correlation

Sedentary behavior has been identified as a significant risk factor for pre-mortality independently of daily physical activity. At the same time the number of older adults remaining at work increases nowadays. The issue of sedentary behavior in older adults is therefore a growing field of...

Prototype of the Near-Infrared Spectroscopy Expert System for Particleboard Identification

Anna Sandak, Jakub Sandak, Dominika Janiszewska, Salim Hiziroglu, Marta Petrillo, Paolo Grossi
Journal of Spectroscopy

The overall goal of this work was to develop a prototype expert system assisting quality control and traceability of particleboard panels on the production floor. Four different types of particleboards manufactured at the laboratory scale and in industrial plants were evaluated. The material...

Community based influence maximization in the Independent Cascade Model

László Hajdu, Miklós Krész, András Bóta
Proceedings of the 2018 Federated Conference on Computer Science and Information Systems
Community detection Infection maximization Independent Cascade Model

Community detection is a widely discussed topic in network science which allows us to discover detailed information about the connections between members of a given group. Communities play a critical role in the spreading of viruses or the diffusion of information. In [1], [8] Kempe et al....

The Maillard reaction for wood modification: The influence of reagent concentrations, reaction temperature and soaking time on the leachability and cell wall penetration of reagents

Kelly Peeters, Andreja Kutnar, Črtomir Tavzes, Jaka Pečnik, Callum A.S. Hill
beech pine leachability Maillard reaction wood modification

Finding efficient ways to decrease wood decay caused by fungi and increasing its dimensional stability is an important issue in timber construction and other applications. A possible way to avoid wood decay by fungi and increase its dimensional stability, is by reducing the water content of...

Performance of modified wood in service – multi-sensor and multi-scale evaluation

Anna Sandak, Jakub Sandak, Marta Petrillo, Paolo Grossi
service life performance modified wood multi-sensor evaluation weathering facades

The performance of 120 selected façade materials provided by over 30 industrial and academic partners was evaluated during 12-month experimental campaign of natural weathering. A multisensor measurement chain for the acquisition of properties at different scales (molecular, microscopic,...

Life cycle assessment of bio-based façades during and after service life: maintenance planning and re-use

Marta Petrillo, Jakub Sandak, Anna Sandak, Paolo Grossi, Andreja Kutnar
bio-based material cascading end-of-life façade life cycle assessment re-use service life

New developments in the field of wood protection, coupled with the European political determination to lower the environmental impact of the building sector, designates wood and bio-based materials as an excellent option for building façades. Despite that, the share of wood in the European wood...

Perception and evaluation of modified wood

Dean Lipovac, Michael D. Burnard, Andreja Kutnar
evaluation perception preference tactile visual wood modification

Wood modification processes improve many characteristics of wood that are appreciated among building professionals. The same modification processes also change characteristics of wood that are important to laypeople, such as wood’s visual (e.g., colour) and tactile (e.g., roughness)...

Effect of wood modification and weathering progress on the radiation emissivity

Paolo Grossi, Jakub Sandak, Marta Petrillo, Anna Sandak
emissivity modified wood thermography thermal images weathering heat transfer

The research reported here is a part of the BIO4ever project, which aims to develop numerical models simulating performance of the bio-based cladding materials in relation to the exposure time or so-called “weather dose”. The value of emissivity is one of the thermodynamic material...

Multi-depot bus schedule assignment with parking and maintenance constraints for intercity transportation over a planning period

Dávid Balázs, Krész Miklós
Transportation Letters
Bus scheduling parking maintenance long-term planning public transportation assignment integer programming network flow

This article introduces the schedule assignment problem for public transit, which aims to assign vehicle blocks of a planning period to buses in the fleet of a transportation company. This assignment has to satisfy several constraints, the most important of which is compatibility, meaning that...

Acute effect of full time office work in real environment on postural actions and lumbar range of motion

Kastelic Kaja, Matej Voglar, Šarabon Nejc
Journal of Electromyography and Kinesiology

Introduction: Prolonged sitting is often proposed as a risk factor for low back pain development. The purpose of this study was to evaluate the acute effect of full time office work on sensorimotor trunk functions. Methods: Seventeen healthy office workers participated in the study. Maximal...

Experimental and numerical analysis of flexible polymer connections for CLT buildings

Boris Azinović, Miha Kramar, Tomaž Pazlar, Matija Gams, Arkadiusz Kwiecien, Jan Weckendorf, Iztok Šušteršič
CLT connections flexible adhesive polyurethane energy dissipation equivalent viscous damping cyclic tests dynamic tests

The paper explores the possibility of using flexible adhesives to dissipate energy in CLT buildings during earthquakes. In the first series of tests, a rod glued in a CLT panel with flexible adhesive was investigated. The connection was tested in pull-pull configuration using cyclic,...


Iztok Šušteršić, Bruno Dujič, Simon Aicher
Cross-laminated timber Hybrid plates Experimental testing Ribs Material rationalisation

Cross laminated timber (CLT, X-lam) started its mass production in the beginning of the 21st century. Over time it has become one of the most used products in the timber construction industry with its worldwide use constantly growing. The quantity of yearly cut timber especially in Europe is...

Utilisation of chemically modified lampante oil for wood protection

Matthew Schwarzkopf, Michael Burnard, Viacheslav Tverezovskiy, Andreas Treu, Miha Humar, Andreja Kutnar
European Journal of Wood and Wood Products
wood protection olive oil wood modification

Within the Slovenian region of Istria, the olive growing and oil production industry is strong. This industry has a long history and the olives grown here have high levels of biologically active compounds including a variety of phenolic compounds. Using residual materials generated by this...

Professional journal article describing the potential for open innovation in the furniture sector in Slovenia. Article is in the Slovene Language. 

An optical method for rapid examination of check development in decorative plywood panels

Michael David Burnard, Lech Muzynski, Scott Leavengood, Lisa Ganio
European Journal of Wood and Wood Products
Digital Image Correlation optical methods crack assessment maple veneer plywood

Common methods for assessment of surface checking in decorative plywood panels rely on manual handling and visual inspection of specimens, a laborious procedure practically limiting the number of materials and variables that may be considered within one project. In this study, a new automated...

Sedentary behavior is a well-known risk factor for several non-communicable diseases. The aim of our study was to investigate sedentary time and physical activity in crane operators and office workers within work and non-work context. Fourteen crane operators and 15 office workers wore activPAL...

An examination of the potential for the use of the Maillard reaction to modify wood

Kelly Peeters, Erik Larnøy, Andreja Kutnar, Callum A.S. Hill
International Wood Products Journal
Beech and pine Maillard reaction primary amines sugars thermal reaction water deliverable wood modification

Finding efficient ways to decrease wood decay caused by fungi is an important issue in the timber construction. A possible way to avoid wood decay by fungi is by reducing the water content of wood, since water is a primary condition for fungal growth. Bulking of the wood cell wall by chemical...

Exploring connections between researchers and ideas in the European Hardwoods Innovation Alliance using two-mode social network analysis

Ana Slavec, Barbara Rovere, Uwe Kies, Andreas Kleinschmidt von Lengefeld
innovation research mapping and clustering social network analysis.

Two-mode social network analysis (SNA) can be applied to data that consists of two sets of units, from analysing persons and societies to authors and papers. The objective of this paper is to evaluate the possibilities of this approach for the analysis of connections between researchers and...

Open innovation in manufacturing industries: A literature review

Barbara Rovere, Michael Burnard, Andreja Kutnar, Eric Hansen
open innovation,

Contribution submitted to and presented at the 2018 WESTERN FORESTRY GRADUATE RESEARCH SYMPOSIUM held at Oregon State University, Corvallis, OR, USA in April 2018.

Structuring of cellulose (nano) substrates into functional porous materials

Silvo Hribernik, Tanja Kos, Mojca Bozic, Manja Kurecic, Karin Stana Kleinschek
Polymer science

Abstract of a lecture at 3rd edition of International Conference and Exhibition on Polymer Chemistry, March 26-28, 2018, Vienna, Austria

Wood preservatives utilizing low-value olive oil production by-products: Analysis

Michael Burnard, Matthew Schwarzkopf, Viacheslav Tverezovskiy, Andreas Treu, Miha Humar, Andreja Kutnar

The objective of this study was to develop and assess the efficacy of two experimental methodologies for the maleinisation of lampante oil to be used for wood protection. Two maleinisation techniques were used to chemically modify low-value lampante oil in an attempt to limit leaching, increase...

Wood modification technologies - a review

Dick Sandberg, Andreja Kutnar, George Mantanis
iForest - Biogeosciences and Forestry
Chemical Treatments Thermo-hydro-mechanical LCA Acetylation Furfurylation Resin Impregnation Environmental Impacts Densification

The market for new durable products of modified wood has increased substan- tially during the last few years, especially in Europe. This increased interest depends partly on the restricted use of toxic preservatives due to increased environmental concern, as well as the need for reduced...

Examining the evolution and convergence of wood modification and environmental impact assessment in research

Michael Burnard, Marko Posavčević, Edo Kegel
iForest - Biogeosciences and Forestry
Bibliometrics Data Mining Network Analysis Wood Modification Environmental Impact Assessment COST Action FP1407 Wood
Supplemental material:

This paper uses network analysis of two fields to demonstrate the value of the technique, and to examine how the fields have changed over time and to what extent they overlap. This was of interest for a COST Action (FP1407, ModWoodLife:

Life Cycle Assessment – Opportunities for Forest Products Sector

Andreja Kutnar, Callum AS Hill
wood S-LCA product category rules (PCR) environmental impact environmental product declaration (EPD) forest products life cycle assessment (LCA) O-LCA

The utilization of wood in long life products, such as construction materials in the built environment, is an e ective way to optimize the use of natural resources while also reducing negative environmental impacts. However, the environmental bene ts of timber, especially in the construction...

Common themes in Wood Modification and Environmental Impact Assessment of Wood

Michael Burnard, Marko Posavčević, Edo Kegel
bibliometrics network analysis wood modification environmental impact assessment meta-analysis

Bibliometric analysis utilises data mining techniques to capture selected aspects about a set of publications. For instance, researchers can quickly assess how research themes change over time, identify new trends in research, gaps in the knowledge base, assess collaboration patterns, identify...

Performance of three-layer composites with densified surface layers of Nothofagus pumilio and N. antarctica from Southern Patagonian forests

Matthew Schwarzkopf, Michael Burnard, Guillermo Martínez Pastur, Lucas Monelas, Andreja Kutnar
Wood Material Science & Engineering
Densification silviculture low-density wood modified wood hardwoods

Nothofagus pumilio and N. antarctica forests of Southern Patagonia, Argentina are currently being managed for production of saw logs with fast growing conditions. The result of these management strategies is faster growing forests, but also an increase in the percentage of low-density wood. The...

Micromechanics of the internal bond in wood plastic composites: integrating measurement and modeling

Matthew Schwarzkopf, Lech Muszyński, Chad C. Hammerquist, John A. Nairn
Wood Science and Technology
wood digital image correlation strain

In this study, an integrated approach combining experimental measurements and numerical modeling was used for characterization of load transfer in the wood/matrix interface in wood plastic composites (WPCs). The experimental methodology was based on optical measurement of surface displacements...

Within this article, we reviewed the most important standards and recommendations on office furniture design. Office environments, designed in line with these recommendations, decrease the risk of injuries and other problems, associated with sedentary jobs.