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[ODLAA launch webinar] Critical questions for open educational practices - Distance Education 41 (2) 2020 (Special Issue)
No full textOn 16 June 2020 an 'issue launch webinar' was hosted by ODLAA featuring the special issue editors and authors.
Moderator: Som Naidu. Guest editors: Suzan Koseoglu, Aras Bozkurt and Leo Haveman
Supplemental Material—Does firm strategy influence corporate social responsibility and firm performance? Evidence from the tourism industry
No full textSupplemental Material for Does firm strategy influence corporate social responsibility and firm performance? Evidence from the tourism industry by Ali Uyar, Mehmet Ali Koseoglu, Cemil Kuzey, and Abdullah S. Karaman in Tourism Economics</p
The Major and Minor Relaxations in Polymeric Ni-Zn-Cu-Co Complex Nanocomposite Systems
No full textNanocrystalline polymeric complex (Ni0.5Zn0.4Cu0.1) ferrite substituted cobalt (Co) ferrite system has been synthesized by chemical co precipitation method. The dielectric properties of polymeric spinel ferrite system (Ni0.5Zn0.4Cu0.1Fe2O4)(x)(CoFe2O4)(1-x) have been investigated. Some of the dielectric parameters such as dielectric permittivity epsilon' and loss tangent (tan delta) were studied as a function of frequency in the range 1 Hz-1 MHz and of temperature in the range 230-410 K. Excessive dependency of dielectric properties on frequency and temperature with the presence of two relaxation mechanisms, which are called as major and minor, have been observed. From Argand diagram analysis alpha and Delta epsilon values for these two kinds of relaxation curves have been determined for all the samples in the measured temperatures. The reported dielectric properties are thought to be meaningful for future applications
Monitoring and aggregate modelling of an existing neutral temperature district heating network
No full textThis contribution provides preliminary modelling results and data analysis of an existing neutral-temperature district heating (NTDH) network. The word ”neutral” in this context refers to the fact that the distribution temperature is close to the ambient temperature (e.g., 15–20 °C). This type of network is coupled with decentralized heat pumps (HP), for both heating and cooling. They offer the advantage of being reversible and the possibility of integrating low-temperature waste heat. The considered case is located in Ospitaletto, Italy. The network includes two sources (industrial waste heat at about 25 °C and ground source heat from aquifer wells at about 15 °C), it is mainly built with non-insulated pipes and has a length of approximately 2 km. Decentralized HPs installed at user substations provide the proper temperature for space heating and sanitary hot water production. An approximate model was applied to analyse the network operation. This model is focused on energy balances aggregating all users as a lumped demand and explicitly includes the behaviour of HPs substations, a component not available in other district heating analysis tools. The simulation of an entire year of operation is considered, with an hourly resolution. Thermal load profiles are known and used as input to the model, while the outputs are compared with real data -a combination of weekly and hourly measurements at the users substations-which include annual heat supply, electricity consumptions, thermal losses, and seasonal performance factor (SPF). The results yield an overall deviation of 15% in the main indicators when using pre-defined data. In conclusion, even though the measured SPF is slightly lower than expected, the model reaches a reasonable agreement
Evaluation of potential cardiovascular risk protein biomarkers in high severity restless legs syndrome
No full textRestless legs syndrome (RLS) is a common sensorimotor disorder that, in case of severe symptoms, can be very distressing and negatively interfere with quality of life. Moreover, increasing evidences associate RLS with higher risk of cerebrovascular and cardiovascular disease (CVD). The purpose of this study was to quantify two proteins, previously identified by proteomics and potentially linked with CVD risk, namely kininogen-1 (KNG1) and alpha-1-antitrypsin (A1AT), in primary RLS patients at high severity grade (HS-RLS) in comparison to healthy control subjects. Proteins were quantified through enzyme-linked immunosorbent assay (ELISA) in plasma samples from 14 HS-RLS patients and 15 control individuals. The two groups were closely matched for age and gender. The expression level of KNG1 resulted significantly higher (p < 0.001), while A1AT was significantly decreased (p < 0.05) in HS-RLS patients compared to controls, confirming the relationship between these proteins and the disease severity. Furthermore, in patients group the association between the protein concentrations and the following parameters was further evaluated: age, disease onset and diagnosis, scores obtained from the RLS rating scales (Epworth Sleepiness Scale, Pittsburgh Sleep Quality Index, Beck Depression Inventory) and smoking habit. All the considered variables resulted independent of protein levels, so the disease can be reasonably considered the main cause of protein changes. As emerged from the literature, high levels of KNG1 and low amounts of A1AT seem to be related with a highest probability to develop CVD. Consequently, these proteins may be reliable candidate biomarkers of CVD risk in patients with RLS at high severity grade
Diffusive author(s), cohesive author: Analysis of S/N (1994)
No full textThis study indicates the ways in which various aspects of the author(s) are brought forth in Dumb type’s performance art, the S/N production. Previous research has suggested a non-hierarchical organization of Dumb type and the absence of a “privileged author” in Dumb type’s collaborative work, S/N. However, the results that I have investigated from member’s interviews on the creative process of S/N along with my analysis of the recorded images of S/N, indicate a different aspect of the author(s). First, S/N was created through, so to speak, the collective ideas of the members of Dumb type. Further, S/N has at least nine quotations from previous performances, installations, and printed writings, besides the work-in-progress technique. Explicating one of the “author functions” as given by Michel Foucault, each text has plural subjects of the author. However, it has been revealed from members’ interviews that Teiji Furuhashi had a decision-making role in selecting the members’ ideas within the performance. Since then, S/N has had plural subjects of creation; however, Furuhashi is one of the subjects of creation along with the “privileged author.” S/N has plural authors (diffusive authors) yet at the same time, it has a “privileged author,” Teiji Furuhashi (cohesive author)
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
From social interactions to private environmental behaviours: The case of consumer food waste
No full text\ua9 2021. Consumer food waste, like many environmental behaviours, takes place in private, and is not directly subject to social monitoring. Nevertheless, social interactions can affect private opinions and behaviours. This paper builds an agent-based model of interactions between consumers heterogeneous in their sociability, their initial opinions and behaviours related to food waste, and their willingness to consider different opinions, in order to assess how social interactions can affect private behaviours. Compared to existing models of opinion dynamics, we innovate by including a range of “cognitive dissonance” between stated opinions and actual behaviours that consumers are willing to accept before changing one of the two. We calibrate the model using questionnaire data on household food waste in Italy. We find that a limited degree of mixing between different socio-demographic groups, namely adult and young consumers, is enough to trigger change, but a certain openness of mind is required from more wasteful individuals. Equally, a small group of environmentally committed consumers can attract a sizeable share of the population towards low-waste behaviours if they show a certain variability of opinions and are willing to compromise with individuals in their close neighbourhood in terms of opinions. These findings can help design effective interventions to promote pro-environmental behaviours, taking advantage of the beneficial network effects while anticipating negative externalities
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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