1,356,760 research outputs found
Words in Crisis: A relational perspective of emergent meanings and roles in text
No full textGroenewegen, P. [Promotor]Hellsten, I.R. [Copromotor]Taminiau, Y.T.A. [Copromotor
Cyberviolence and the digital experience. Reflections on a problematic issue for youth
No full textIn this paper, the authors introduce some of the main aspects of cyberviolence related to digital life, and online experience with a specific focus on young people. Cyberviolence includes violent and calculated actions carried out through electronic tools. In different situations, the perpetrator(s) can be a single person or a group, which deliberately aims to hurt or damage another who cannot defend themselves, often because the victims are initially unaware and unable to manage the problem emotionally and psychologically. Cyber-stalking, revenge porn, hate speech and cyberbullying are just some forms of online violence (cyberviolence). This issue reflects on the problematic issue of cyberviolence from different perspectives including the social, psychological, and educational
Dance in the Early Church: sources and restrictions
No full textLaura Hellsten, Åbo Akademi, Systematic Theology
Laura Hellsten is a PhD student in Systematic Theology at Åbo Akademi University. She has a Master’s degree in Education from Oulu University 2008 and Master in Theology from Åbo Akademi University 2012. She is currently working on her thesis, on dance and theology, which deals with the practices of dance in the Western Christian tradition. The thesis will be ready in 2017 and combines ethnographic studies in the Church of Sweden between the years 2014–16 with more historical materials stretching from Biblical narratives to the Middle Ages. She also teaches Religious Education at the International Teacher Education programme at Oulu University.Understanding the role of dance in the Western Christian tradition is an underexplored territory. Sources of historical investigations are few and many of them are problematic. In this article commonly used sources are questioned and a re-examination of earlier research is begun. Focusing on the Early Church in dialogue with writing from the patristic period, a new interpretation is done around the theme of dance prohib-ition. The important contributions of Donatella Tronca as well as Graham Pont and Alessandro Alcangeli to the understanding of dance in the Early Church period are expanded by means of a more extensive theological framework. This article also aims at bringing a broader philosophical and societal understanding of the worldview and social imaginary of the Early Church period to bear on earlier research studies
Women's perceptions of quality of household work
No full textWomen’s roles in the work force have increased, however, women’s positions in the household have not changed greatly (Lennon & Rosenfield, 1994). While paid work research has focused significantly on the qualities of roles, household work research has not (Janzen & Hellsten, 2007). As the few existing instruments that do measure the quality of household work roles lack psychometric evidence (Janzen & Hellsten, 2007), a new instrument assessing all aspects of the quality of household work roles and possessing evidence of validity and reliability is required. The first step in the instrument development process is the identification and definition of relevant constructs. Thus, the main purpose of the study was to identify household work themes. Four focus groups of triple role women were performed with a total of 20 participants. A snowball sampling technique was used to recruit participants. Thematic analysis of the transcripts identified eight themes: No End Result, Scheduling, Time Constraints, Psychological Strain, Equality in Work, Value, Money, and Reward. The results found women to enjoy certain aspects of household work, but that they lead busy and hectic lifestyles. The themes created in the study were placed into a table of specifications this is to guide future instrument development research in which items can be included for each of these eight themes
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
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Extending the Current Theorization On Cyberbullying. Importance of Including Socio-Psychological Perspectives
No full textDespite an abundance of research from multiple perspectives and disciplines, to date cyberbullying research has been fragmented and is often conducted atheoretically, using theories borrowed from general psychology and/or criminology, or considers only individual-level explanations such as demographics, personalities, and psychological conditions which may be insufficient to fully understand and explain the behaviour. Social psychological approaches that examine the everyday power relations in children’s lives and the study of identity, relationships, and belonging systems may provide meaningful context and a more holistic perspective. The purpose of this paper is to demonstrate the positive impact of applying identity theories and a sociological perspective to the study of cyberbullying. This paper provides an overview of cyberbullying, followed by examples of how general psychological theories and theories borrowed from criminology and aggression have been applied to cyberbullying, including a cyberbullying-specific theory. Several key theories of identity that could be employed in the study of cyberbullying are then identified. Lastly, the utility of using a socio-psychological perspective using social identity theory and social network analysis to study of cyberbullying is explored. In order to manage cyber violence, we need to act on multiple levels, including individual, relational, organizational, and community levels
Hellsten belirtik cebirsel Reynolds gelirim k-omega modelinin uygulaması ve değerlendirilmesi
No full textTurbulence modeling is one of the most challenging aspects of Computational Fluid Dynamics (CFD). The choice of turbulence model affects the accuracy and computational cost of the CFD analyses. Linear Eddy Viscosity Models (LEVMs) are commonly used in industrial CFD applications due to their low computational cost and ease of convergence. However, they often fail to model complex flow structures. More advanced models, such as Reynolds Stress Transport Models (RSTMs), have better performance for capturing the complex flow physics. RSTMs suffer from convergence difficulties and high computational requirements. In order to combine the computational cost advantage of LEVMs with the accurate prediction of complex flow physics of RSTMs, Explicit Algebraic Reynolds Stress Models (EARSMs) have been introduced. Hellsten utilizes Wallin-Johansson Explicit Algebraic Reynolds Stress Model (WJ-EARSM) as a constitutive model and Menter’s Shear Stress Transport Model as a baseline model for k and ω transport equations. Hellsten slightly modified the transport model equations and calibrated the model coefficients to implement WJ-EARSM on the base turbulence model. This model is claimed to be favorable by having similar computational cost and coding advantages to the SST and a similar level of accuracy to the WJ-EARSM. In this thesis, Hellsten’s k − ω EARSM, which is designed for high-lift aerodynamics, is implemented to open-source CFD code flowPSI. The model is validated using seven different generic turbulence model validation and high-lift aerodynamic test cases.Türbülans modellemesi hesaplamalı akışkanlar dinamiği için zorlu konulardan biridir. Türbülans modeli seçimi hesaplamalı akışkanlar dinamiği analizlerinin doğruluğunu ve hesaplama zamanlarını etkiler. Doğrusal Girdap Viskozite Modelleri, göreli olarak daha az miktarda hesaplama zamanına ihtiyaç duymaları ve yakınsamalarındaki kolaylık nedeni ile endüstriyel uygulamalarda sıkça tercih edilmektedir. Ancak bu modeller karmaşık akış yapılarını modellemede yetersiz kalmaktadırlar. Reynolds Gerilim Taşınım Modelleri gibi daha gelişmiş modeller bu karmaşık akış fenomenlerini
daha başarılı şekilde yakalayabilmekte ancak yakınsama zorluklarından ve yüksek hesaplama gereksinimlerinden dolayı pratikte kullanımamaktadırlar. Doğrusal Modellerin hesaplama maliyeti avantajlarından ve Reynolds Gerilim Modelleri’nin karmaşık akış fiziğini doğru tahmin etme özelliklerinden faydalanmak için Belirtik Cebirsel Reynolds Gerilim Modelleri oluşturulmuştur. Hellsten, yapısal model olarak Wallin–Johansson Belirtik Cebirsel Reynolds Gerilim Modeli’ini kullanmış, k ve ω taşınım denklemleri için ise Menter’in Kayma Gerilim Taşınım Modelini temel almıştır. Hellsten taşınım modeli denklemlerini bir miktar değiştirerek ve model katsayılarını kalibre ederek kullanmaktadır. Bu modelin, Kayma Gerilim Taşınım Modeli’nin benzer hesaplama maliyetine ve kodlama avantajlarına sahip olmakla birlikte Wallin-Johansson Belirtik Cebirsel Reynolds Gerilim Modeli ile benzer doğruluk düzeyine sahip olduğu belirtilmektedir. Bu tezde, yüksek kaldırmalı aerodinamik için tasarlanan Hellsten’in Belirtik Cebirsel Reynolds Gerilim k − ω Modeli açık kaynak hesaplamalı akışkanlar dinamiği kodu olan flowPsi’ye uygulanmıştır. Bu model yedi farklı genel türbülans modeli doğrulama problemleri ve yüksek kaldırmalı aerodina-
mik problemleri kullanılarak doğrulanmıştır.M.S. - Master of Scienc
Implementation and validation of the Hellsten k-w EARSM
No full textThis report describes the implementation, verification, and validation of the Hellsten k-w EARSM developed within the EU-project HiAer. The model equations are summarized, and their implementation into DLR's unstructured flow solver TAU is briefly described. The implementation is verified by comparison with results for a turbulent flat plate boundary layer with zero pressure gradient. Validation computations are carried out for the airfoil RAE 2822 for conditions referred to as Case 9 and Case 10, representing transonic flow. For high-lift flow the model's validity is checked by polar computations for the A-310 three-element airfoil in landing configuration, ranging from the linear regime of the CL-alpha curve to beyond stall
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