Worlds apart? On Niklas Luhmann and the sociology of education

In an effort to address the relationship between globalisation, education and Niklas Luhmann’s branch of systems theory, we present his essay, published here for the first time in English translation, ‘Education: Forming the life course’, next to the nine contributions that compose this special issue and build on this and his other writings to take up the theme of education in world society. To conclude, we underline that systems theory’s emphasis on functional differentiation helps to address two lacunae in the today prevailing sociological practice. By positing the development of self-referential domains as modernity’s central mode of differentiation, it provides sociology with a comprehensive theory of world society. By the same token, it also allows one to observe education as a global affair with, so to speak, a life of its own.

Process evaluation, tensile properties, mathematical models, and fracture behavior of 3D printed continuous fiber reinforced thermoplastic composites

Continuous fiber reinforced thermoplastic composites with advantages of high strength, long life, corrosion resistance, and green recyclability have been widely used in aerospace, transportation and high-precision processing equipment, etc. 3D printing is an advanced additive manufacturing technology that enables the rapid manufacture of complex structures and high-performance composites. The aim of this study is to evaluate the precision and stability of 3D printed continuous fiber reinforced thermoplastic composite structures and construct suitable mathematical models to predict tensile properties. Samples evaluated in this study were produced by varying the volume fraction and distribution mode (average and central mode) of fibers within the printed structures. The measured data proved the continuous fiber reduced the printing precision on width and thickness and the printing stability on thickness, while it improved the width stability in the XY horizontal plane. The printing precision and stability of samples with an average mode were slightly better than those of samples with a central mode. The tensile results of 3D printed continuous fiber reinforced thermoplastic composites demonstrated that an increasing volume of fiber reinforcement resulted in the increasing stiffness and ultimate strength of tested samples. The average elastic modulus and ultimate tensile strength of samples with the average mode were higher than those of samples with the central mode, while the average strain at break was quite the opposite. Mathematical models of elastic modulus were established to achieve the relative errors 0.06% and 2.14% for checked samples, while relative errors of the mixing rule were up to 76.15% and 81.71%, respectively. Some typical defects affecting the surface quality and the fracture behavior of 3D printed samples were researched by the analysis of micromorphology.

Phonons and relaxations in unfilled tetragonal tungsten-bronzes

The lead-free unfilled tetragonal tungsten-bronzes SBN and CBN are investigated by Raman, infrared and high-frequency dielectric spectroscopies. The substitution in the different channels affects phonons as well as relaxations. Relaxations in SBN show similar qualitative behaviour on increasing Sr content and relaxor behaviour, but for the extreme relaxor samples all characteristic frequencies are higher with stronger contribution to the permittivity in the GHz-THz range is stronger. The presence of a soft anharmonic central mode in the THz range together with the slowing down of a relaxation from GHz to MHz ranges reveals the coexistence of displacive and order-disorder scenarios for the ferroelectric phase transition in this family.

The Passion of Christ on Television: Intertextuality as a Mode of Storytelling

The Passion is a contemporary performance of the passion of Christ live on stage, combined with pop music, city marketing, social media, and entertainment. The result is an encounter between the Christian gospel and traditional elements of devotion like a procession of the cross on the one hand, and the typical mediatization and commercialization of late modern society on the other. In this article, I will first briefly describe the phenomenon, including the different effects that the event has upon the audience and the stakeholders and benefits it has for them. It is one characteristic of The Passion that it allows for a variety of possible approaches, and this is, at the same time, part of its formula for success. Another characteristic is the configured intertextuality between the sacred biblical text and secular pop songs. In the second section, I will interpret this as a central mode of storytelling in The Passion. It can evoke traditional, but also new, interpretations of the Christian gospel. The purpose of the article is to interpret The Passion as an expression of constructive public theology. It is an example of how the gospel is brought into dialogue with secular society.

Comparativism and Colonizing Thinking in International Law

Comparison is a very common tool for international lawyers. In fact, international law is built around, and draws upon, constructions necessitating an exercise of comparison. In recent years, however, calls have been made to turn the familiar tool of comparison into a central way to engage with international law. This is the idea of those spearheading the rise of a new field called comparative international law. This article critically examines the promotion of comparison as a central mode of engagement with international law and scrutinizes some of the main features of the comparativist project. It particularly shows that the comparativist project, far from laying bare the plurality of international legal thought and practice, enables a thought-colonizing enterprise. The article ends with some reflective observations on the possibility of limiting colonizing thinking in international legal studies. In doing so, it argues that it must remain possible for international lawyers to engage with alterity in a way that does not unilaterally manufacture the “other,” silence it, and speak on its behalf. This approach is called counter-comparability.

Central effects of erenumab in migraine patients

ObjectiveTo determine whether erenumab, a new monoclonal antibody to the calcitonin gene-related peptide (CGRP) receptor, exerts functional central effects in migraineurs by performing functional imaging scans on patients treated with erenumab.MethodsWe conducted an fMRI study on 27 patients with migraine using a well-established trigeminal nociceptive paradigm, examining patients before and 2 weeks after administration of the CGRP receptor antibody erenumab 70 mg.ResultsComparing both visit days in all patients (n = 27) revealed that erenumab leads to a decrease in activation in the right thalamus (i.e., contralateral to the stimulated side), right middle temporal gyrus, right lingual gyrus, left operculum, and several clusters on both sides of the cerebellum. Furthermore, when responders (n = 9) and nonresponders (n = 8) of the respective same headache state were compared, we found a significant reduction of hypothalamic activation after the administration of erenumab in responders only (t = 4.78; contrast estimate 29.79 [90% confidence interval 19.53–40.05]). This finding of reduced hypothalamic activation was confirmed when absolute headache days was used as a regressor.InterpretationThese findings suggest that erenumab may not be an exclusively peripheral migraine treatment but has additional central effects. Whether this is due to secondary changes after peripheral modulation of sensory input or indeed represents a direct central mode of action is discussed.

Counter/Infections: Dis/abling Spaces and Cultures

With COVID-19 we experience the dramatic effects of a cosmopolitical event by which a non-human actor politicizes, i.e. unbuttons the normalcy of the ‘cosmos’ of shared lived spaces, what we take for granted as and what we expect from a globalized life-world. The dynamics of infection unfold an existential learning situation not only of how we live and how we wish to live, but also how we may compose modes of counterinfections to become better ‘equipped’ to keep living well with others. Thinking with Hannah Arendt, Georg Simmel, Georges Canguilhem, Alfred North Whitehead and others, the first part of the paper unfolds a conceptual framework for inquiries into the social complexity of lived embodied spaces and cultures. The idea of counter/infection alludes to the central mode of the social that can be understood as a process of creating and transforming the differences of value relations that may allow or endanger, enable or disable, enrich or limit embodied interaction. With this in mind, the second part of the paper reflects on how issues of dis/abling experiences as they have been portrayed in Space and Culture can be rethought and re-presented as social processes of dis/abling counter/infections.

The Rise and Fall of the Tahrir Repertoire: Theorizing Temporality, Trajectory, and Failure

This article examines how and why the strategy of occupying Tahrir Square went from being the central mode of action and defining image of the Egyptian Revolution of 2011 to an ineffective strategy read by many as symbolic of the revolution’s ultimate failure during the transitional period of 2011–2012. This question speaks to a lacuna in the literature on repertoires, specifically a lack of attention to their temporality and the lessons to be learned from their failure. I propose a framework that examines the trajectory of repertoires and traces their 1) meaning; 2) internal composition; 3) relationality vis-à-vis the regime in relation to which the repertoire is practiced; and 4) temporal momentum. Using this framework, I chart the rise and fall of the Tahrir repertoire in a very short period: from February 12, 2011, to December 5, 2012. The article draws on ethnographic, qualitative, and historical data collected over three research trips taken between February 4, 2011, and January 7, 2015.