Refine
Year of publication
Document Type
- Article (1920)
- Conference Proceeding (1098)
- Part of a Book (965)
- Book (447)
- Other (130)
- Part of Periodical (38)
- Report (36)
- Bachelor Thesis (22)
- Doctoral Thesis (22)
- Working Paper (18)
Language
- German (2680)
- English (2013)
- Spanish (11)
- Multiple languages (8)
- Russian (8)
- Portuguese (5)
- Italian (1)
- Polish (1)
- Turkish (1)
- Ukrainian (1)
Keywords
- Digitalisierung (13)
- Sozialarbeit (13)
- Controlling (12)
- Logistik (9)
- Deutschland (8)
- Hochschule für angewandte Wissenschaften Würzburg-Schweinfurt (8)
- Jahresbericht (8)
- Management (7)
- refugees (7)
- Electromobility (6)
Institute
- Fakultät Wirtschaftswissenschaften (748)
- Fakultät Angewandte Sozialwissenschaften (658)
- Fakultät Informatik und Wirtschaftsinformatik (293)
- Fakultät Elektrotechnik (262)
- Fakultät für angewandte Natur- und Geisteswissenschaften (233)
- Fakultät Gestaltung (212)
- Fakultät Wirtschaftsingenieurwesen (174)
- Fakultät Kunststofftechnik und Vermessung (132)
- Technologie TransferZentrum-Elektromobilität (TTZ-EMO) (72)
- Fakultät Maschinenbau (67)
Chlor-alkali electrolysis plays a significant role in Germany's electricity demand, with a share of >2%. It offers a promising avenue for leveraging demand response strategies. In times of escalating electricity prices, load shifting can help to maintain economic competitiveness of domestic industries. This study aims to assess the potential for electricity cost savings and related CO2 emission reductions through optimal load shifting practices for chlor-alkali electrolysis, considering both current and projected future electricity prices. The research employs the mixed-integer energy system modeling framework IRPopt to model and optimize a chlorine value chain under various scenarios. A sensitivity analysis is conducted to identify the primary factors driving electricity cost savings. The findings reveal that, based on the 2019 electricity price distribution (before pandemic and energy crisis), load shifting can yield electricity cost savings of 5.8% and CO2 emission reductions of 2.7%. As the share of variable renewable energy sources increases along with other driving factors, the electricity price spread is projected to rise from 28% in 2019 to an average of 87% in 2040 scenarios. Consequently, electricity cost savings rise up to 22% and CO2 emission reductions up to 10%. The primary drivers behind electricity cost savings include electricity price spreads and the utilization and operating range of the electrolyzer. In addition to the business-level advantages, the resulting decrease in residual load and lower CO2 emissions contribute to the integration of variable renewable energy sources and the achievement of decarbonization targets at the economic level.
Transitioning to a net-zero economy requires a nuanced understanding of homeowners’ decision-making pathways when considering the adoption of Low Carbon Technologies (LCTs). These LCTs present both personal and collective benefits, with positive perceptions critically influencing attitudes and intentions. Our study analyses the relationship between two primary benefits: the household-level financial gain and the broader environmental advantage. Focusing on the German homeowners’ intention to adopt Rooftop Photovoltaic Systems, Energy Efficient Appliances, and Green Electricity Tariffs, we employ Partial Least Squares Structural Equation Modeling to demonstrate that the adoption intention of the LCTs is underpinned by the Theory of Planned Behaviour. Our research also highlights the pivotal role of perceived benefits in shaping attitudes and intentions. Attitudes towards the LCTs are more strongly related to product-specific benefits than affective constructs. In terms of evaluative benefits, environmental benefits exhibit a higher positive association with attitude formation compared to financial benefits. However, this relationship switches as homeowners move through the decision process with the financial benefits of selected LCTs having a consistently higher association with adoption intention. At the same time, financial benefits also positively affect attitudes. Observing this trend across both low- and high-cost LCTs, we recommend that policymakers and businesses enhance homeowners’ awareness of the personal advantages and implement strategies to make these financial benefits more tangible and accessible.
BAG 24.6.2015
(Thema: Annahmeverzug / Schadensersatz wegen Verletzung der Beschäftigungspflicht)
(2024)
Bioprinting provides a powerful tool for regenerative medicine, as it allows tissue construction with a patient’s specific geometry. However, tissue culture and maturation, commonly supported by dynamic bioreactors, are needed. We designed a workflow that creates an implant-specific bioreactor system, which is easily producible and customizable and supports cell cultivation and tissue maturation. First, a bioreactor was designed and different tissue geometries were simulated regarding shear stress and nutrient distribution to match cell culture requirements. These tissues were then directly bioprinted into the 3D-printed bioreactor. To prove the ability of cell maintenance, C2C12 cells in two bioinks were printed into the system and successfully cultured for two weeks. Next, human mesenchymal stem cells (hMSCs) were successfully differentiated toward an adipocyte lineage. As the last step of the presented strategy, we developed a prototype of an automated mobile docking station for the bioreactor. Overall, we present an open-source bioreactor system that is adaptable to a wound-specific geometry and allows cell culture and differentiation. This interdisciplinary roadmap is intended to close the gap between the lab and clinic and to integrate novel 3D-printing technologies for regenerative medicine.
Depressive Störungen und Angststörungen sind bei Kindern und Jugendlichen weit verbreitet. Der vorliegende Beitrag widmet sich der Bedeutung, die die Emoti-onsregulationsfähigkeit der Betroffenen in diesem Zusammenhang spielt. Es zeigt sich, dass als dysfunktional geltenden Emotionsregulationsstrategien die Entste-hung und Aufrechterhaltung von depressiven Störungen und Angststörungen bei Kindern und Jugendlichen bedingen. Spezifische Therapieansätze wie die dialek-tisch-behaviorale Therapie weisen jedoch wirksame Möglichkeiten auf, die Emoti-onsregulationsfähigkeit von Kindern und Jugendlichen positiv zu fördern. Weitere Forschung, vor allem im Bereich der Angststörungen, ist hier anzustreben.
The dramatic pictures of violence on the Polish - Belorussian border are just the latest manifestation of the dehumanization, securitization and externalization of the EU migration management policies. A trend that can be traced to early 2000s has achieved a new level in recent years after a brief opening of EU borders in 2015. The COVID-19 pandemic has amplified these dynamics in different ways and deepened inequalities of the transnational mobility (Lee 2020; Sumba 2021; Afeworki Abay, Kassaye & Kleibl 2022; Matela & Maaza 2022). In addition to physical violence by state and non-state actors along the EU external border, EU migration management employs strategies that condone prolonged exposure of mobile people to death and to a host of human rights violations (Mbembe 2003, 2019; Mayblin & Turner 2020; Mayblin 2016, 2019; Abuya, Krause & Mayblin 2021; Sadeghi 2019). At the same time, civil society members, media representatives and those who attempt to assist mobile people are also increasingly criminalized, exposed to right-extremist violence and targeted by excessive legal, financial and bureaucratic burdens that make their work difficult, if not impossible. Externalization as a central characteristic of EU border management refers to the propounding mechanisms of moving the border forward (Andrews 2021; Getachew 2019; Gutiérrez Rodríguez 2018a, 2018b; Mayblin, 2017; Mayblin, Wake & Kazemi 2019). Outside of the EU, externalization policies construct EU border controls in so-called countries of origin and transit. In this process, EU migration management is fused with foreign policy, international development and international trade mechanisms. These incursions disrupt socioeconomic dynamics and local mobility patterns as far as Iran-Turkey borderlands, West African ECOWAS region or the border between Ethiopia and the Sudan. The internal and external EU migration management developments are inseparable and materialized legacies of colonialism, enduring gender inequalities, politics of citizenship and racialized economies (Andrews 2021; Getachew 2019). This book therefore aims to critically analyze how Social Work and EU migration management regimes co-constitute each other. The here presented book will offer theoretical discussions and practical experiences around the following questions: In which way is Social Work complicit in the EU migration management regime? Where do Social Workers find opportunities to build solidarities, become subversive of the hegemonic structures and work for empowerment? How do Social Workers deal with the increasingly restrictive political, legal and economic environment, in which they engage with mobile people? How can Social Work become more apt to working with people who are at times highly mobile and at times immobilized in remote camps, forests or desert outposts? Moreover, this book espouses the broadest definition of Social Work as a human rights profession and an academic discipline but also as an indigenous way of social assistance and social change (Staub-Bernasconi 2012, 2016; Healy & Link 2011; Kleibl, Lutz & Noyoo 2020). By paying attention to the temporal and spatial aspects of Social Work with mobile people, we explicitly refuse the apolitical, decontextualized view of Social Work as neutral „helping“, instead we plea for critical reflection on the entanglements of Social Work in complex, intersecting power dynamics. Hence, this book seeks to critically analyze how Social Work becomes entangled in categorization of people to make them „legible“ and „visible“ to EU migration management and how Social Work itself is categorized in order to be disciplined as a „helping“ profession and an instrument of the state/EU migration management. We ask how Social Work could be transformed to work in a multiscalar, transnational scale, truly living up to the ambition to employ „glocal“ approach.
The multiple and simultaneous realities of Social Work practice have always been more complex than its theories suggested. The knowledges, desires and perspectives of its addressees are much more nuanced than standardized empirical qualitative and quantitative research methodologies (that inform theorization) could possibly grasp. In consequence, many assumingly universal and evidence-based methods and instruments in Social Work do not lead towards anticipated outcomes that aim to support the social, political, ecological and economic needs of the addressees. Social Work theories in turn often lack the consideration of, under others, race, class and gender subordination and domination effects, which form integral parts of power dynamics between the oppressed and the oppressors at play in the 21st century. This leads to downplaying the need to theorize and support solidarity from below, as well as to strengthen relational accountability between those that want to advance social justice. In addition, structural elements “from above” such as political and welfare systems and development economies do not receive significant attention either. In consequence, many theories do not lead to concepts, approaches and praxis that sufficiently grasp the historical and contemporary situatedness in which Social Work operates.
While there is an evident need for establishing thorough processes of decolonizing Social Work in education, research and practice, there is only a limited number of literature available on the complex decolonization project. It includes the co-edited volume Decolonizing Social Work by Mel Gray, John Coates, Michael Yellow Bird and Tiani Hetherington (2013), Trabajo Social y Descolonialidad, by María Eugenia Hermida and Paula Meschini (2017) or the Routledge Handbook of Postcolonial Social Work, by Tanja Kleibl, Ronald Lutz, Ndangwa Noyoo, Benjamin Bunk, Annika Dittmann and Boitumelo Seepamore (2020). These foundational works contribute immensely to the much-needed discussion on the diversification of Social Work theories and methods, yet their foci cannot possibly attempt to address a full scope to the decolonization of all Social Work dimensions in greater detail. Furthermore, most publications (e.g., Tascón and Ife, 2020; Fortier and Hon-Sing Wong, 2018) focus on theoretical reflections, leaving the important gap regarding the necessary knowledge transfer into practice, research and education still broadly opened.
Since the publication of Linda Tuhiwai Smith's book (1999), Decolonizing Methodologies: Research and Indigenous Peoples, researchers in various disciplines in social and health sciences have increasingly become aware of the importance of adopting decolonial research methodologies. However, the transnational project of decolonization might be challenging and complex to implement in research projects and teaching formats in Social Work. The chapter contributions in this co-edited volume give insight from a broader geopolitical perspective into how established Eurocentric concepts, perceptions, practices, and paradigms in Social Work have been continuously re-assessed and re-nuanced within the last two decades (Tamburro, 2013; Noyoo, 2020; Kleibl et al., 2020; Castro Varela and Mohamed, 2021; Gray et al., 2023; Harms-Smith and Rasool, 2020). Within the broader project of Western academia, one effect of decolonization is challenging the allegedly objective “scientific knowledge, in view of its rigor and instrumental potential, [as] radically different from other ways of knowing, be they lay, popular, practical, commonsensical, intuitive, or religious” (de Sousa Santos, 2018b: 5). Moreover, decolonial concepts such as “epistemic de-linking” (Mignolo, 2007: 450) and “epistemic disobedience” (Mignolo, 2009: 8) are indispensable in unpacking the colonial roots of epistemic violence and foregrounding ‘Epistemologies of the South’ (de Sousa Santos, 2014) in Social Work research in order to establish “a time of epistemological imagination aimed at refounding the political imagination (…) to strengthen the social struggles against domination” (de Sousa Santos, 2018a: 126-127). The continuous problematization of Eurocentric knowledge production (e.g., methodological nationalism, culturalization, westernization) is therefore important for establishing critical dialogues in Social Work. Most importantly, decolonizing university education (Rodríguez, 2018; Mbembe, 2016; Mignolo, 2013; de Sousa Santos, 2017) in general is the first step in order to disrupt the colonial continuity of knowledge production that “operates as an invisible power matrix that is shaping and sustaining asymmetrical power relations between the Global North and the Global South” (Ndlovu-Gatsheni, 2014: 181). In moving beyond theoretical discussions and reflections, this co-edited volume addresses the essential questions regarding the implementation of decolonial approaches in research methodologies and teaching formats in Social Work. This co-edited volume is therefore an important contribution for critically minded Social Work educators and students who seek to understand the complex structures of the colonial past, the contemporary postcolonial moment as well as to decolonize their teaching, researching, and visions of decolonialized Social Work.
The fact that the coloniality of power and knowledge (Quijano; 2000; Mignolo, 2007, 2011; Grosfoguel, 2013) has only been addressed poorly in Social Work contributes to what Paulo Freire (1970: 12) referred to as “a culture of silence”. A culture of silence exists where those who are oppressed are not heard in society, and where a lack of knowledge about their contexts creates a high risk for the perpetuation of racism, discrimination, and the violent process of ‘blaming the victim’. Research methodologies and teaching formats in Social Work have always been embedded in the colonial archives of Eurocentric knowledge (Quijano; 2000; Mbembe, 2016; Grosfoguel, 2013). As Freire (1970: 5) argues that “The social worker, as much as the educator, is not a neutral agent, either in practice or in action”. In the last decade, Social Work education and research methodologies have been continuously criticized for being complicit in downplaying and silencing the brutality of the colonial project (Harms-Smith and Rasool, 2020; Kleibl et al., 2020; Tamburro, 2013). This includes but not only limited to the ignorance of the social, political, ecological and economic implications of colonial legacies as well as post and neocolonial continuities in the 21st century. In addition, the development of Western political and welfare systems ‘from above’ do not result in significant social change and transformative justice. In consequence, many theories do not lead to concepts, approaches and praxis that sufficiently grasp the historical and contemporary situatedness of coloniality of knowledge and power in which Social Work keeps operating (Afeworki Abay, 2023; Daňková et al., 2024; Kleibl et al., 2024). In response to the continuities of colonial epistemologies and methodologies in Social Work, the chapter contributions in this co-edited volume show the relevance of Pluriversality as one of the various decolonial strategies to unsettle the coloniality of Eurocentric knowledge production (Quijano; 2000; Mignolo, 2007, 2017; Grosfoguel, 2013). One of strategies of decolonizing research methodologies and teaching formats is to universalize and normalize ways of knowing and knowledge production that Eurocentric systems of knowledge portray as ‘not valuable’ or ‘not objective enough’ (Tuck and Yang, 2012; Tlostanova and Mignolo. 2012; Afeworki Abay, 2023). Likewise, an important analytic strategy for decolonizing research methodologies is to draw upon marginalized and Indigenous knowledge systems (Smith, 1999; Tamburro, 2013; Zavala, 2016) that have been to taken-for-granted in the social, political, economic, and environmental discourses in Social Work.
Decolonizing Social Work
(2024)
Over the last three decades, “decolonization” has become an increasingly emergent framework in tracing and addressing the complex mechanisms of coloniality of knowledge and power (Mignolo, 2011; Quijano, 2000). Surprisingly enough, decolonial perspectives have hardly been considered in Social Work education, research and practice (e.g. Harms-Smith & Rasool, 2020; Kleibl et al., 2020; Gray et al., 2016; Tamburro, 2013; Lutz, Sachau, & Stauß, 2017). Even though, there is a growing body of literature that addresses the need for decolonization of Social Work with indigenous people (e.g. Tanemura et al., 2016; Ives & Thaweiakenrat Loft, 2016) or individuals and communities in and from the Global South (e.g. Noyoo, 2020; Kreitzer, 2016; Freire, 1970), many Social Workers in the Global North (both in academia and practice) argue that the need for decolonization does not apply to their work. This is particularly true in countries of the Global North that claim to have had little engagement with colonialism (e.g. Ranta-Tyrkkö, 2011). Historically, much of Social Work theory and practice was developed in the Global North and exported across the globe as a byproduct of colonization and – in the postcolonial era – in form of development aid (Schirilla, 2018). Within the hegemonic discourses, knowledges produced at the peripheries and in the context of social struggles has been delegitimized and rendered invisible. Therefore, Social Work remains dominated by Euro-American perspectives, which oftentimes reproduce epistemic violence (Spivak, 1988). This acknowledgment, then, calls for a critical analysis of Social Work education, research and practice as well. Recent emerging discussions on implementing decolonial approaches in Social Work (Harms-Smith & Rasool, 2020; Tamburro, 2013; Lutz, Kleibl & Neureither, 2021) have drawn the attention to the possibilities of “epistemic disobedience” (Mignolo, 2009: 8). They brought forward Afrocentric approaches to pedagogy (van Wyk 2014; Watson-Vandiver & Wiggan, 2021), pedagogies that centralize the oppressed (Freire, 1970; Kohan, 2021), non-extractivist research approaches and methods that focus on embodied knowledge and corporeal emancipation (de Sousa-Santos, 2018), as well as creating South-South links (Rivera, 2012).
Decolonial Methodologies in Social Work: Foregrounding Pluriversalism in Teaching and Research
(2024)
While decolonial perspectives have continuously been discussed in contemporary academic discourse in Social Work in the last two decades, yet, the complex legacies of colonialism are often left unreflected within methodological and pedagogical conceptualizations in Social Work (Harms-Smith and Rasool, 2020; Tamburro, 2013; Kleibl et al., 2020; Harms-Smith and Afeworki Abay, 2024). With this understanding in mind, it is imperative to critically engage with the growing interest of mainstream discourse on decolonizing research and education in Social Work and as well as to understand the broader project of decolonization as a way of “epistemic de-linking“ (Mignolo, 2007: 450) from colonial thoughts and practices. Decolonial perspectives in Social Work’s knowledge production require a deep look into the core concept of Pluriversality in foregrounding theories, epistemologies and methodologies of the South. According to Boaventura de Sousa Santos (2018), decolonizing theories, epistemologies and methodologies is an asymmetrical and long-term process that requires deep analysis and reflection both in formerly colonized and colonizing regions. As there are only insufficient methodological reflections on these complex topics of “decolonization” in Social Work (see among others: Kleibl et al., 2024), the aim of this book is to go one-step further and put a spotlight on the increasing number of critical teaching formats as well as research projects in Social Work that aim to challenge the current status-quo of coloniality of power, knowledge and being (Quijano, 2007). This co-edited volume provides discussions and experiences with decolonial approaches in research and education of Social Work. It centres methodologies developed in the Global South (de Sousa Santos, 2014; Connell, 2014) in an attempt to decolonize Eurocentrism, as the knowledge produced by subaltern communities and scholars of the global South have been rendered invisible.
Pandemic - Measures and Consequences: Increased Global Inequality and Violations of Human Rights
(2024)
This chapter explores the enduring impact of the global pandemic and its far-reaching consequences. The pandemic disrupted the world, exposing inequalities inherent in globalization and the privileged lifestyles of the Global North. Global inequality, rooted in colonialism and capitalism, persisted, with the pandemic exacerbating disparities. The crisis not only affected health but also strained families and exacerbated gender inequalities. In the Global South, vulnerable populations faced economic hardship and inadequate healthcare. The pandemic intensified the global education crisis, disproportionately impacting girls. Moreover, human rights violations became apparent as states and institutions failed to meet their obligations. Structural inequalities and unequal access to healthcare underscored the need for a more comprehensive human rights approach in social work. Social work must address structural inequalities, prioritize community-based solutions, and advocate for international solidarity and new legal mechanisms to protect human rights in crises. It must also confront its colonial past and decolonize curricula. As we navigate ongoing crises, social work must take on a transformative role, working alongside marginalized communities to advocate for a more just and equitable society.
The non-equilibrium steady states of a semi-infinite quasi-one-dimensional univalent binary electrolyte solution, characterised by non-vanishing electric currents, are investigated by means of Poisson-Nernst-Planck (PNP) theory. Exact analytical expressions of the electric field, the charge density and the number density are derived, which depend on the electric current density as a parameter. From a non-equilibrium version of the Grahame equation, which relates the total space charge per cross-sectional area and the corresponding contribution of the electric potential drop, the current-dependent differential capacitance of the diffuse layer is derived. In the limit of vanishing electric current these results reduce to those within Gouy-Chapman theory. It is shown that improperly chosen boundary conditions lead to non-equilibrium steady state solutions of the PNP equations with negative ion number densities. A necessary and sufficient criterion on surface conductivity constitutive relations is formulated which allows one to detect such unphysical solutions.
Amyloidosis represents a rare yet heterogeneous multi-system disorder associated with a grave prognosis and an enormous psycho-emotional strain on patients, relatives, and caregivers. We here present the overall study design and first results ofMY-NEED, a research program aiming to systematically assess the needs of patients suffering from amyloidosis, their relatives and health care professionals (HCPs), and develop an amyloidosis-specific care approach.MY-NEEDuses a mixed-methods approach including focus groups (step 1), a questionnaire-based broad evaluation within the local amyloidosis patient collective (step 2), and the development of a needs-adapted care concept (step 3).Seven patients, six relatives and five HCPs participated in the focus groups (step 1). At the time of diagnosis, patients expressed the need of a smooth diagnostic process, possibly enhanced through improved awareness and better education of local HCPs. There was a strong wish to receive well-founded information and comprehensive support including companionship during medical visits, experience the feeling of being understood, find trust in that "everything possible" is being done, and have effortless access to centre staff. In the course of the disease, patients favoured that the specialized centre should manage treatment coordination, monitoring and psychosocial support. The interface between centre and local HCPs was regarded of particular importance, requiring further investigation into its optimal design.Patients with amyloidosis express particular needs that should appropriately be considered in specifically tailored care concepts.
Introduction: The negative consequences of climate change are widespread and have a global impact. An industrialized region of Germany must adapt to the effects of climate change and comply with political regulations. Previous studies indicate that economic actors who are not directly affected by climate change approach climate change mitigation and adaptation primarily based on legal requirements and often feel discouraged by the absence of data-based reports. Addressing this challenge, game-based learning emerges as a promising pathway.
Methods: To examine game-based learning’s applicability and potential for climate adaptation, we developed a business simulation game, simultaneously identifying didactically effective elements for managers who would participate in it. Using expert interviews and focus groups, we conducted a qualitative study with three HR developers from larger companies and nine managers and founders of startups to develop a business simulation game on climate adaptation. Based on the Grounded Theory methodology, theoretical coding was used to analyze the qualitative data.
Results: The derived core categories indicate that personnel development in companies is evolving in response to economic changes. Individual resources such as motivation (especially for managers), personnel and time play a crucial role in establishing a business game as an educational offering. The identified game elements can also be used theoretically and practically in the development of other educational games.
Discussion: We discussed common human resource development measures in companies and compared them with more innovative approaches such as a simulation game. The study underscores the importance of innovative approaches, such as game-based learning, in fostering climate adaptation efforts among economic actors. By integrating theoretical insights with practical applications, our findings provide valuable guidance for the development of educational games aimed at addressing complex challenges like climate change. Further research and implementation of such approaches are essential for promoting proactive climate adaptation strategies within industrialized regions and beyond.
We present an evaluation of different deep learning and machine learning approaches for tree health classification in the Black Forest, the Harz Mountains, and the Göttinger Forest on a unique, highly accurate tree-level dataset. The multispectral UAV data were collected from eight forest plots with diverse tree species, mostly conifers. As ground truth data (GTD), nearly 1500 tree polygons with related attribute information on the health status of the trees were used. This data were collected during extensive fieldwork using a mobile application and subsequent individual tree segmentation. Extensive preprocessing included normalization, NDVI calculations, data augmentation to deal with the underrepresented classes, and splitting the data into training, validation, and test sets. We conducted several experiments using a classical machine learning approach (random forests), as well as different convolutional neural networks (CNNs)—ResNet50, ResNet101, VGG16, and Inception-v3—on different datasets and classes to evaluate the potential of these algorithms for tree health classification. Our first experiment was a binary classifier of healthy and damaged trees, which did not consider the degree of damage or tree species. The best results of a 0.99 test accuracy and an F1 score of 0.99 were obtained with ResNet50 on four band composites using the red, green, blue, and infrared bands (RGBI images), while VGG16 had the worst performance, with an F1 score of only 0.78. In a second experiment, we also distinguished between coniferous and deciduous trees. The F1 scores ranged from 0.62 to 0.99, with the highest results obtained using ResNet101 on derived vegetation indices using the red edge band of the camera (NDVIre images). Finally, in a third experiment, we aimed at evaluating the degree of damage: healthy, slightly damaged, and medium or heavily damaged trees. Again, ResNet101 had the best performance, this time on RGBI images with a test accuracy of 0.98 and an average F1 score of 0.97. These results highlight the potential of CNNs to handle high-resolution multispectral UAV data for the early detection of damaged trees when good training data are available.
In the context of environmental protection, the construction industry plays a key role with significant CO2 emissions from mineral-based construction materials. Recycling these materials is crucial, but the presence of hazardous substances, i.e., in older building materials, complicates this effort. To be able to legally introduce substances into a circular economy, reliable predictions within minimal possible time are necessary. This work introduces a machine learning approach for detecting trace quantities (≥0.06 wt%) of minerals, exemplified by siderite in calcium carbonate mixtures. The model, trained on 1680 X-ray powder diffraction datasets, provides dependable and fast predictions, eliminating the need for specialized expertise. While limitations exist in transferability to other mineral traces, the approach offers automation without expertise and a potential for real-world applications with minimal prediction time.
Computerized Numeric Control (CNC) plays an essential role in highly autonomous manufacturing systems for interlinked process chains for machine tools. NC-programs are mostly written in standardized G-code. Evaluating CNC-controlled manufacturing processes before their real application is advantageous due to resource efficiency. One dimension is the estimation of the energy demand of a part manufactured by an NC-program, e.g. to discover optimization potentials. In this context, this paper presents a Machine Learning (ML) approach to assess G-code for CNC-milling processes from the perspective of the energy demand of basic G-commands. We propose Latin Hypercube Sampling as an efficient method of Design of Experiments to train the ML model with minimum experimental effort to avoid costly setup and implementation time of the model training and deployment.
On the way to climate neutrality manufacturing companies need to assess the Carbon dioxide (CO2) emissions of their products as a basis for emission reduction measures. The evaluate this so-called Product Carbon Footprint (PCF) life cycle analysis as a comprehensive method is applicable, but means great effort and requires interdisciplinary knowledge. Nevertheless, assumptions must still be made to assess the entire supply chain. To lower these burdens and provide a digital tool to estimate the PCF with less input parameter and data, we make use of machine learning techniques and develop an editorial framework called MINDFUL. This contribution shows its realization by providing the software architecture, underlying CO2 factors, calculations and Machine Learning approach as well as the principles of its user experience. Our tool is validated within an industrial case study.
Neue Qualitätskriterien für die Patientenschulung – Ergebnisse eines mehrstufigen Delphi-Prozesses
(2024)
Umwandlungsrecht
(2024)
The present article proposes a theoretical model of factors affecting the salience of social categorizations. The model is strongly related to the accessibility×fit formulation by Bruner (1957) and to Oakes' (1987) functional perspective on category salience. The results of an experimental series using the ‘Who said what?’ paradigm are presented, which examined several hypotheses derived from the model. In Study I it was shown that the salience of a social categorization with high chronic accessibility (sex categorization) was related to perceptions of issue relevance (normative fit) and intercategory differences (meta-contrast ratio). Furthermore, in line with the salience model measures to increase the situational accessibility, (i.e. a priming procedure) of categorizations with low chronic accessibility (educational group and home town categorizations) failed to affect category salience as long as participants perceived no comparative and normative fit of these categorizations (Study II). Under conditions where comparative fit of these categorizations was perceived, however, the priming procedure successfully enhanced category salience (Studies II and III). Results are largely consistent with the hypotheses derived from the salience model and support Oakes' functional approach to category salience. Finally, the complex interrelation between situational accessibility and perceived fit will be discussed.
Allgemeine Aussagen der Theorie der sozialen Identität von Tajfel (1978) über Stereotypisierung von Mitgliedern sozialer Gruppen wurden exemplarisch anhand der Intergruppen-Differenzierung zwischen zwei natürlichen Gruppen überprüft. In Übereinstimmung mit der Theorie favorisierten Mitglieder der statusniedrigen Gruppe (Ostdeutsche) ihre Eigengruppe auf der statusunabhängigen (sozialen) Vergleichsdimension, während Mitglieder der statushohen Gruppe (Westdeutsche) eine relative Überlegenheit ihrer Eigengruppe auf der statusbezogenen (materiellen) Dimension wahrnahmen. Darüber hinaus ergaben sich Hinweise auf eine ‘indirekte’ Diskriminierung bei beiden Gruppen: Je stärker die jeweilige Eigengruppe favorisiert wurde, desto wichtiger wurde die entsprechende Vergleichsdimension für die Eigengruppe eingeschätzt. Zusätzlich wurde ein Vorhersagemodell zur Intergruppen-Differenzierung geprüft, in dem Eigengruppen-Favorisierung als Funktion der wahrgenommenen Stabilität und Legitimität der Statusdifferenz sowie der Durchlässigkeit (Permeabilität) der Gruppengrenzen betrachtet wurde. Zusätzlich wurde die Identifikation mit der Eigengruppe als Mediator in das Prädiktionsmodell aufgenommen. Mitglieder der statusniedrigen Gruppe favorisierten ihre Eigengruppe auf der statusunabhängigen Vergleichsdimension um so mehr, je stabiler, illegitimer und impermeabler die Intergruppenstruktur wahrgenommen wurde und je höher sie sich mit ihrer Eigengruppe identifizierten. Für Mitglieder der statushohen Gruppe war die Favorisierung ihrer Eigengruppe auf der statusbezogenen Dimension hingegen mit einer erhöhten Legitmitätswahrnehmung der Statusdifferenz verbunden.
Data from several recent studies consistently show a positive–negative asymmetry in social discrimination: within a minimal social situation tendencies towards ingroup favouritism which usually appear in allocations of positively valenced resources are absent in the domain of negatively valenced stimuli. The present study investigates whether this valence-asymmetry has any correspondence to variations in normative evaluations of positive versus negative outcome allocations. For this purpose perceptions of normative appropriateness as well as frequency expectations of outside observers regarding outcome allocations made by categorized group members were investigated. Results show that parity choices were perceived as more normatively appropriate than out- or ingroup favouritism. While outgroup favouritism was judged as inappropriate as ingroup favouritism for positive resources, ingroup favouring decisions for negative resources were perceived as the least appropriate response within the minimal social situation. In addition, in contrast to results of St. Claire and Turner (1982) non-categorized subjects expected ingroup favouring decisions by group members more frequently than parity or outgroup favouring choices with respect to positively valanced resources. When, however, negative resources were to be allocated, outgroup favouritism was predominantly expected. Results are discussed in terms of justice considerations and are linked to a normative account of the positive-negative asymmetry in social discrimination.
Taken from literature on social identity theory and social comparison theory, 12 strategies of identity management were identified as possible responses to negative social identity. A taxonomy with two orthogonal axes is proposed as theoretical organization of these diverse strategies. While the first axis considers responses as being either individual or collective, the second axis refers to the distinction between behaviours and cognitions. It is assumed that the German unification process implied a lower status position of East Germans relative to West Germans on relevant comparison dimensions, and that East Germans have to deal with this threat to their identity. Hence, data of an East German sample are used to empirically systematize identity management strategies, and, thus, to test the proposed taxonomy. Results support the expected four-factor solution only for those strategies taken from social identity theory, while the responses derived from social comparison research build a fifth factor. In addition, the empirical assignments of strategies to cells of the taxonomy are only partly in line with the expected pattern. The empirical findings suggest some clarification and modifications of the proposed response taxonomy. The most important refers to a re-interpretation of the taxonomy's first axis, which now differentiates between responses according to the specific changes of the comparison parameters they imply.
Studied interactions between social identity (SI) and social comparisons (SCs) in East German and West German populations to test the assumptions that East Germans feel inferior when comparing themselves to West Germans and that their negative SI can be improved by alternative SCs. Human Ss: 35 normal male and female East German adults (aged 21–57 yrs) (mixed occupations) (Study 1). 226 normal male and female East German adults (mean age 38 yrs) (Study 2). 123 normal male and female West German adults (mean age 38 yrs) (Study 2). In individual interviews, the Ss in Study 1 were asked to indicate the types of SCs they considered relevant for their own life satisfaction (LS) and for the LS of East Germans in general. Study 2 focused on assessing strategies for improving a negative SI. The Ss completed questionnaires assessing (1) their satisfaction with their own and their group's (East Germans or West Germans) life situations and (2) characteristics of their SCs (i.e., the subjects, objects, dimensions, and outcomes of the SCs). Interactions between LS and SCs were analyzed, and results for East German and West German Ss were compared.
Three studies investigated the determination of social discrimination by the valence of stimuli that are allocated between groups. The studies were based on either the minimal group paradigm or a more reality-based laboratory intergroup setting, with stimulus valence, group status, and group size as factors and with pull scores on Taifel matrices as dependent variables. In general, the results showed that group members did not discriminate against the out-group when allocating negative stimuli, where as for positive stimuli the typical in-group bias was found. However, those participants whose positive social identity was threatened by assigning them to inferior or minority groups showed an increased willingness to favor the in-group over the out-group in the allocation of both positive and negative stimuli.
Proposes a theoretical model of antecedents of the salience of social categorizations that is strongly related to the work of J. S. Bruner (1957) and P. J. Oakes (1987). In addition, the results of an empirical study using college students are presented which examined several hypotheses derived from the model. First, it was investigated whether exclusion vs inclusion of the perceiver with respect to a social categorizations affected the salience of this classification. Second, the study examined the relationship between social categorization on the one hand and social discrimination on the other. The results show that under otherwise equal conditions an inclusive social categorization is more salient than an exclusive one. In addition, in line with self-categorization theory, a significant correlation between the salience of a social categorization and tendencies toward ingroup favoritism appeared only for Ss strongly identified with the salient self-category, but not for low identifiers. The results of the present study are interpreted as a support of the proposed model of the salience of social categorizations.
Examined the influence of stimulus valence (positive vs negative) and size and status differentials on intergroup differentiation, using a sample of 276 Ss. The dependent measures included evaluative attributes which referred either to a status-related or to a status-unrelated dimension. Ss took part in group experiments in which minority–majority conditions were present and in which groups had to rate each other. As expected, generally there was in-group favoritism in the positive domain in which inferior minorities showed highest biases. In-group favoring evaluations in the negative domain appeared only under aggravating conditions (i.e., when the in-group had inferior and minority status). However, while this pattern of findings was true with respect to status-unrelated measures, there was a mere reproduction of the status manipulations on measures which were related to the status differential.
Group-serving biases in evaluating and explaining harmful behavior were investigated. Members of the Italian Communist party judged and explained an in-group or an out-group actor's harmful behavior toward an in-group or an out-group victim. The results support the notion of an in-group bias: Out-group actors were perceived as more aggressive and intentional in their actions than in-group actors. An in-group bias was also observed with regard to predictions about whether the victim would attempt retaliation. Group-based explanations were used more often when the group identities of actor and victim were different than when they were the same.
The positive–negative asymmetry in social discrimination proposes a threshold for ingroup favouritism within the negative domain: in contrast to comparable studies dealing with in- and outgroup evaluations on positive attributes, ingroup favouritism does not occur when negative attributes are used. The present study focuses on two aspects of this threshold: it investigates processes, which may influence the absence of ingroup favouritism in the negative domain, and it tests ‘aggravating’ variables, which seem to be suficient to elicit ingroup favouritism even in the negative domain.
Results show that ingroup favouritism occurred within the negative domain when several aggravating conditions were included, namely high salience of size- and status- similarity between groups and high ingroup identification. Furthermore, subjects under minimal conditions tended to overestimate relative size as well as relative status of their ingroup. The perception of group members to belong to a high status majority is interpreted as a sufficient condition counteracting tendencies towards ingroup favouritism within the negative domain.