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Due to the high wastepaper recyclability and water-loop system closure, packaging paper mills struggle with increased fines, causing runnability issues. Cellulase enzymes are a preferred treatment choice for the improvement of the pulp refining in stock preparation area but are not widely used or easy to introduce in the production process. Different cellulase enzymes were tested, and those with the highest activity were introduced to the white-water (WW) samples with the aim to reduce fines content as potentially new enzyme applications on the paper machine. The first portion of the study involved the development of an experiment model to find and confirm the optimal enzyme process parameters (40 °C, pH 5.7, reaction time 3 h, and 0.18% v/v enzyme addition) for laboratory made white-water. The second portion of the study included turbidity, colloidal charge, flow cytometry (FCM), and chemical oxygen demand (COD) analysis on industrial and laboratory made white-water samples at optimized process parameters. Obtained results corresponded to reduced fines content in white-water samples, which justified commercial usage of cellulase enzymes on recycled paper machine short loop and potentially increased machine runnability without negative influence on wastewater treatment plant.

Hemicellulose and pectin are noteworthy components of historical European rag papers, and have not been studied in detail so far. Rag papers were made from used textiles, and fiber-based utilities, such as ropes and bags. These had been prepared until the mid-19th century from plant-based fibers. Their polysaccharide composition could relate to their condition and history. This information can be expected to hold importance for the preservation and conservation of historical objects. We investigated a collection of rag papers of different age for their composition of non-cellulosic polysaccharides, and compared the findings with modern rag papers and wood pulps. Furthermore, a non-destructive determination of the hemicellulose and pectin content by near-infrared spectroscopy was developed. Historical rag papers had a lower hemicellulose/pectin content than pulps; the fractions of rhamnose, galactose, and arabinose were higher, while xylose was lower. In modern rag papers, xylose tended to be at the higher end of the range, which suggests a degradation of hemicelluloses/pectin over time or a change in raw materials and manufacturing. Rag papers also showed higher crystallinity than wood pulp papers. These findings provide insights into rag paper characteristics and offer potential classification methods.

In the paper by Inna Ganschow, the camp experience in the Soviet Union as a result of forced conscription will be treated, specifically in its artistic processing: secretly written diaries and letters by Luxembourg Wehrmacht soldiers. Contemporary historical research today calls them ego documents – private, handwritten texts of a personal nature. The range of texts to be examined in the lecture ranges from the smuggled out notes and letters that their released comrades took with them to Luxembourg, through diaries, speeches and self-made dictionaries to poems, short stories and drawings, some of which were in the camp and some immediately after the return from Tambov and other camps in the Soviet Union. The focus is on the question of dealing with the thesis of the Auschwitz concentration camp survivor Viktor Frankl, psychiatrist and neurologist from Vienna, that the meaning of camp life - logotherapy - can have a self-healing effect and increase the self-healing powers, which increases the chances of survival.

The response revolves around boundaries of academic disciplines, knowledge production, care, and the creation of we-they and otherness. The dominant knowledge system in disciplines is contested through a discussion of the separation of use and production of technology/science. Researchers’ entanglement and how this makes sense in the research process is also highlighted. In the portrayal of old and young engineers a “we”, “they”, and “otherness” are constituted without a reflection. Care and thinking-with care are introduced to extend the discussion of care. In the end it is recommended to be more focused in choices of aim, theoretical framework, and method.

Hypertension, defined as persistently elevated systolic blood pressure (SBP) >140 mmHg and/or diastolic blood pressure (DBP) at least 90 mmHg (International Society of Hypertension guidelines), affects over 1.5 billion people worldwide. Hypertension is associated with increased risk of cardiovascular disease (CVD) events (e.g. coronary heart disease, heart failure and stroke) and death. An international panel of experts convened by the International Society of Hypertension College of Experts compiled lifestyle management recommendations as first-line strategy to prevent and control hypertension in adulthood. We also recommend that lifestyle changes be continued even when blood pressure-lowering medications are prescribed. Specific recommendations based on literature evidence are summarized with advice to start these measures early in life, including maintaining a healthy body weight, increased levels of different types of physical activity, healthy eating and drinking, avoidance and cessation of smoking and alcohol use, management of stress and sleep levels. We also discuss the relevance of specific approaches including consumption of sodium, potassium, sugar, fibre, coffee, tea, intermittent fasting as well as integrated strategies to implement these recommendations using, for example, behaviour change-related technologies and digital tools.

We discuss three processes of price adjustment, respectively proposed by Smale (1976), van der Laan and Talman (1987), and Kamiya (1990). The latter two processes are guaranteed to converge to a competitive equilibrium for a generic set of exchange economies for any initial price system and the former process for a generic set of exchange economies for any initial price system such that one of the prices is zero. The simplest way to describe these processes is by characterizing the path of prices that they generate. Convergence proofs then rely on results from differential topology and establish that these paths have a manifold structure. The van der Laan and Talman (1987) process was shown by Herings (1997) to exhibit global and universal convergence. The required tools, involving regular constraint sets and manifolds with generalized boundary, are explained in detail and can be fruitfully applied in other domains as well. The paper concludes with an overview of globally and universally convergent processes in other environments like production economies, economies with price rigidities, and normal-form games.

AI-as-a-Service (AIaaS) combines Artificial Intelligence (AI) and cloud computing to make AI accessible to enterprises without implementing complex solutions or technologies on-premise. Many small and medium-sized enterprises (SME) that lack competencies in the AI and technology sector consider AIaaS as a promising option to implement AI solutions. However, the differences between AIaaS and AI on-premise have not attracted much research. The intention of this paper is to contribute to this area by analysing the literature in the field and investigating a concrete example in more detail. Exploring AIaaS is crucial to better understand the opportunities and limitations of AI services. The contributions of the paper are (a) an analysis of the literature on AIaaS to identify factors affecting AI implementation and how AIaaS solutions differ from on-premise solutions when introducing AI in a company, (b) a case study of an SME that compares AIaaS and AI on-premise in practice, and (c) the application potential of a morphological box to compare AIaaS and AI on-premise.

Semiotic resources such as digital technologies have become the tools of the trade in various social practices and are promoting the digital globalization of educational contexts. Through constant renewals, technological impacts on education have elicited several challenges. This paper advocates a theoretical study on how digital technologies can challenge social settings, a conceptualization guiding upcoming empirical explorations on digital technologies in education. By synthesizing research data, new theoretical propositions can be initiated based on previous empirical analyses. An extended critical perception of technologies’ social agency and how technologies regulate meaning-makers’ social, political, and economic life can be obtained as an understanding of the democratization of the Internet space. The following research questions were used; During the last five years, what effects do digital technologies have on social practice, and how can the effects be theoretically conceptualized? Peer-reviewed research papers addressing digital technologies between 2017 and 2022 will be retrieved from scholarly databases. Through meta-synthesis strategies, theoretical conceptualizations of the consequences different digital platforms for Internet navigation and social media have on social practices will be obtained. Findings indicate that the association between the concepts of calculation center, platform leadership, immaterial labor, and mindshare is interesting to strengthen critical perspectives on technical agencies for understanding the democratization of the Internet space. We conclude that there is a need for continuous critical expansion of theories to enrich educational research with tools for problematizing the digital globalization., LICT

University spinoffs (USOs) are firms created to commercialize research outcomes or innovative technologies developed by university members. This paper adopts a systematic literature review approach for exploring the trajectory of the USO research field. It categorizes the literature based on two perspectives: the process of how USOs develop and what factors can explain the variance of USO development; the paper critically examines the USO literature through these two lenses. By integrating these two perspectives and examining 120 peer-reviewed journal articles published between 1987 and 2022, we develop a comprehensive model of USO development. The paper contributes to the extant literature on academic entrepreneurship by contending that while the “how” and “what” questions pose unique challenges for USO scholars, they cannot be separated because the process and variance models are complementary and important in advancing research on USOs. As such, we explore and identify specific factors that affect each of the distinct phases of the USO development at the institutional, organizational, and individual levels of analysis which form the basis for a rich future research agenda.

A computationally efficient FIR-filtering based tool-path (trajectory) modification method, which simultaneously realizes remarkable trajectory error reduction, vibration avoidance, and short machining time, is presented in this paper. Conventional trajectory generation in NC units causes trajectory error by using smoothing filters for limiting acceleration and avoiding vibration of the machines, and this trajectory error is often too large for practical applications. Therefore, a novel trajectory generation method is presented in this paper to remarkably reduce the trajectory error by modifying the trajectory commanded by G-codes on the basis of the trajectory error and angular speed. In order to realize the trajectory modification method, three key components, (i) p-corresponding method, (ii) -smoothing filter, and (iii) modification gain function, are developed in this study. The p-corresponding method is required to stably evaluate the trajectory error, while the other two components are used to compute appropriate modification gains for arbitrary trajectories. The proposed trajectory modification method is completed by integrating the components (i) to (iii), and it is verified utilizing a commercial machine tool. It is confirmed that average trajectory error is reduced remarkably by the proposed method without increasing machining time or sacrificing vibration avoidance by the smoothing filter. In particular, the trajectory errors at circular arcs are eliminated almost completely, e.g., the average trajectory error is reduced significantly by about 80% for a trajectory consisting of several circular arcs and corners.