bluuebunny/crossref_metadata_2025_split huggingface dataset:
Assessing Online Sustainability Communication of Italian Cultural Destinations – A Web Content Mining Approach
Authors: Marchi Valentina , Apicerni Valentina , Marasco Alessandra 
Published: January 2021

AbstractOnline sustainability communication attracts a considerable attention in tourism research. This study focuses on sustainability communication in official destination websites for informing and motivating visitors to adopt sustainable practices and behaviors. To advance previous research in this area, it adopts a web content mining approach to assess the characteristics of online contents of a sample of 20 Italian cultural destinations. The main dimensions and typologies of sustainability-oriented practices in tourism are used as basis to develop a text classifier for the automated content analysis. A total of 2.975 web pages from official city websites and official tourism promotion websites of the destinations is analyzed through this approach to investigate the online contents relating to the environmental, economic, socio-cultural and general dimensions sustainability as well as their emotional appeal. The analysis reveals that about 15.8% of total online texts contains information to promote sustainability-oriented behaviors at the destination. It indicates that the communication is more specifically focused on environmental/economic/socio-cultural practices than generically referring to sustainable/responsible tourism. However, in line with previous research, it highlights that destinations do not sufficiently balance these pillars in their online communication. Further, the websites’ texts scarcely leverage the persuasive potential of affective appealing messages. The implications of this automated approach for improving the design of online sustainability-related contents are also discussed.
“Old” and “New” Media Discourses on Chinese Outbound Tourism to Switzerland Before and During the Covid-19 Outbreak. An Exploratory Study
Authors: Hasenzahl Lea , Cantoni Lorenzo 
Published: January 2021

AbstractThe paper presents an exploratory research focused on the themes concerning Chinese Outbound Tourism to Switzerland in the period from January 2019 to June 2020 including the Covid-19 outbreak. It analyses news media articles from Swiss-German print media covering tourism coming from China, including a visit by 12’000 Chinese travelers – an event extensively covered within Switzerland due to its exceptional number – up to recent times in which non-European tourists are almost absent from the country. The research aims at identifying the main themes being voiced in newspaper articles. It also tackles the themes mentioned in user-generated comments on Facebook on the same articles.
Enhancing the Visitor Experience in the Time of COVID 19: The Use of AI Robotics in Pembrokeshire Coastal Pathway
Authors: Minor Katarzyna , McLoughlin Emmet , Richards Vicky 
Published: January 2021

AbstractAI and Robots represent a major innovation opportunity for the tourism sector, and their potential impact and application offer several new opportunities to enhance and develop the visitor experience. Nevertheless, there has been limited academic research on the use of robots, together with a limited number of destinations embracing this technology. Focusing on the Pembrokeshire Coastal Path, this research paper outlines how a multi methodological approach could be utilised to examine the use of AI and robotics in helping to enhance the visitor experience during the ongoing COVID-19 pandemic. The researchers anticipate that outcomes from such a study could not only provide theoretical contributions in the area of addressing concerns about accessibility in tourism and leisure settings, but also serve to inform both academia and the wider tourism industry to the benefits such technology can have towards enhancing the visitor experience within social distancing parameters.
Formal Semantics and Verification of Network-Based Biocomputation Circuits
Authors: Aluf-Medina Michelle , Korten Till , Raviv Avraham , Nicolau Dan V. , Kugler Hillel 
Published: January 2021

AbstractNetwork-Based Biocomputation Circuits (NBCs) offer a new paradigm for solving complex computational problems by utilizing biological agents that operate in parallel to explore manufactured planar devices. The approach can also have future applications in diagnostics and medicine by combining NBCs computational power with the ability to interface with biological material. To realize this potential, devices should be designed in a way that ensures their correctness and robust operation. For this purpose, formal methods and tools can offer significant advantages by allowing investigation of design limitations and detection of errors before manufacturing and experimentation. Here we define a computational model for NBCs by providing formal semantics to NBC circuits. We present a formal verification-based approach and prototype tool that can assist in the design of NBCs by enabling verification of a given design’s correctness. Our tool allows verification of the correctness of NBC designs for several NP-Complete problems, including the Subset Sum, Exact Cover and Satisfiability problems and can be extended to other NBC implementations. Our approach is based on defining transition systems for NBCs and using temporal logic for specifying and proving properties of the design using model checking. Our formal model can also serve as a starting point for computational complexity studies of the power and limitations of NBC systems.
Cowpea Seed Innovation Platform: A Hope for Small Seed Producers in Mali
Authors: Kouyate Zoumana , Dao Kléouforo M. , Togola Oumar , Malle Abdoul Karim , Malle Oumar , Diakite Kaly , Traore Abdoulaye 
Published: January 2021

AbstractCowpea is a food crop of great importance to the people of Mali due to its contribution to food security, improvement of producers’ incomes, a price that is higher than that of cereals, and an important role in social relationships. However, the availability of good quality seeds is a major constraint to its production and productivity. As seeds are the key input in agriculture, an innovation platform has been established at the Cinzana Agronomic Research Station in May 2016 to improve the production and distribution of cowpea seeds in Mali. It brings together farmers, distributors, transporters, financial and technical services, and NGOs. This ensures greater sharing of information and knowledge among the different actors involved in the cowpea seed value chain. Two bodies of governance were set up: Program Planning Committee and Executive Office. Significant results have been achieved in three years of existence: the number of varieties used has increased from 5 to 12. The amount of foundation seeds produced annually has increased from 1 t to more than 20 t. The sales strategy in small packs proved very effective by reaching more farmers. Promotional activities involved 25 training sessions for 1097 farmers in different aspects of the value chain and 299 demonstrations, involving 2934 producers and benefiting 12193 farmers.
A Cross-Case Analysis of Innovation Platform Experiences in Seven Countries in West and East Africa and South Asia
Authors: Monyo Emmanuel S. , Akpo Essegbemon , Ojiewo Chris O. , Varshney Rajeev K. 
Published: January 2021

AbstractThe Bill and Melinda Gates Foundation (BMGF) funded Tropical Legumes (TL III) project was implemented in seven sub-Saharan Africa countries (Burkina Faso, Ghana, Mali, Nigeria, Ethiopia, Tanzania, and Uganda) and South Asia (India). Shortage of seed of improved varieties has been identified as the greatest hindrance to farmer adoption of new agricultural technologies developed through this project. This chapter compares the different approaches followed by different countries in the establishment of Multi-Stakeholder Platforms (MSPs) for supply of improved legume seed to farmers. Achievements from this initiative are mixed and multi-dimensional. The details herein provide the reader with insights on the level of success of innovation platforms in the different countries and implications for agricultural technology dissemination to smallholder farmers. Key achievements include strengthened linkages among various legume seed value chain actors, participation of several cadres of seed producers in a decentralized system resulting into significant increase in the production of certified and quality declared seed of legumes, and rapid adoption and use of newly released varieties by smallholder farmers. As for those areas where the initiative did not produce the desired results, it is a testament that unless a well thought-out inclusive and comprehensive approach which defines the critical roles of each player in the value chain is developed, current seed shortages will continue, eroding emerging market opportunities and good intentions of development partners. The reader is directed to individual chapters for details of the process followed by each country/crop in the establishment of MSPs, their composition, key achievements, challenges, and lessons for overall improvement of the national legume seed systems.
Gentle introduction to rigorous Renormalization Group: a worked fermionic example
Authors: Giuliani Alessandro , Mastropietro Vieri , Rychkov Slava 
Published: January 2021

AbstractMuch of our understanding of critical phenomena is based on the notion of Renormalization Group (RG), but the actual determination of its fixed points is usually based on approximations and truncations, and predictions of physical quantities are often of limited accuracy. The RG fixed points can be however given a fully rigorous and non- perturbative characterization, and this is what is presented here in a model of symplectic fermions with a nonlocal (“long-range”) kinetic term depending on a parameterεand a quartic interaction. We identify the Banach space of interactions, which the fixed point belongs to, and we determine it via a convergent approximation scheme. The Banach space is not limited to relevant interactions, but it contains all possible irrelevant terms with short-ranged kernels, decaying like a stretched exponential at large distances. As the model shares a number of features in common withϕ4or Ising models, the result can be used as a benchmark to test the validity of truncations and approximations in RG studies. The analysis is based on results coming from Constructive RG to which we provide a tutorial and self-contained introduction. In addition, we prove that the fixed point is analytic inε, a somewhat surprising fact relying on the fermionic nature of the problem.
IGCCCG-Fehlklassifikation (International Germ Cell Consensus Classification) durch zeitlich inkorrekte Interpretation der Serumkonzentration der Tumormarker bei metastasierten testikulären Keimzelltumoren
Authors: Paffenholz Pia , Nestler Tim , Maatoug Yasmine , von Brandenstein Melanie , Köditz Barbara , Pfister David , Heidenreich Axel 
Published: January 2021

Zusammenfassung
Hintergrund
Das Klassifikationssystem zur Prognoseeinschätzung der International Germ Cell Cancer Cooperative Group (IGCCCG) für testikuläre Keimzelltumoren basiert auf dem histologischen Subtyp, der Lokalisation des Primärtumors und der Metastasen sowie der Serumkonzentrationen der Tumormarker vor Chemotherapie.

Fragestellung
Ziel der Arbeit war die Evaluation des Einflusses der Verwendung der Tumormarkerserumkonzentrationen vor Ablatio testis im Vergleich zu denen vor Chemotherapie im Hinblick auf die Eingruppierung entsprechend der IGCCCG-Klassifikation.

Material und Methoden
Wir führen eine retrospektive Datenanalyse an 135 Patienten mit metastasiertem testikulärem Keimzelltumor durch, die eine Primärtherapie mit einer Chemotherapie erhalten haben. Es erfolgte die Analyse von klinischen Parametern mit Fokus auf der Tumormarkerserumkonzentration vor Ablatio testis und vor Chemotherapie, die zur Eingruppierung in eine Prognosegruppe entsprechend der IGCCCG-Klassifikation führten.

Ergebnisse
Die Verwendung der Tumormarkerserumkonzentrationen zur Berechnung der IGCCCG-Klassifikation vor der Ablatio testis im Vergleich zu denen vor Chemotherapie führte bei 8 % (11/135) aller Patienten zu einer veränderten Prognosegruppe sowie daraus folgend nicht-leitliniengerechten Therapieschemata. Es zeigt sich ein „up-staging“ bei 8 der 11 Patienten und somit 6 % (8/135) der gesamten Patientenkohorte, d. h. die Serumkonzentrationen der Tumormarker sind nach Ablatio bis zum Beginn der Chemotherapie abgefallen. Bei 3 der 11 Patienten bzw. 2 % (3/135) der gesamten Patientenkohorte, kam es zu einem „down-staging“, d. h. die Tumormarker sind bis zum Beginn der Chemotherapie angestiegen.

Diskussion
Die Verwendung der Tumormarkerserumkonzentrationen vor Ablatio testis im Vergleich zu denen vor Chemotherapie kann zu einer signifikanten IGCCCG-Fehlklassifikation und somit inkorrekter Therapie führen. Für ein leitlinienkonformes „staging“ der Patienten sollten folglich die Tumormarker vor der Chemotherapie verwendet werden.
Walking worker vs fixed worker assembly considering the impact of components exposure on assembly time and energy expenditure
Authors: Calzavara Martina , Faccio Maurizio , Persona Alessandro , Zennaro Ilenia 
Published: January 2021

AbstractRecently, the need for assembly systems of better following the market demand has led to the spread of alternative solutions with respect to the traditional fixed worker strategy. Walking worker systems, where operators move across the line to produce the finished product, are gaining always more interest. In this paper, a comparison between the fixed worker (FW) and the walking worker (WW) assembly strategies is provided, by taking into account their differences both in terms of performed activities during assembly and of material exposure at the assembly workstations. The evaluation is carried out through the proposal of a mathematical model, to understand the impact on assembly time and on operators’ energy expenditure. The behavior of the model is investigated both with a parametric analysis and a real case study. The results show that the FW is the best one when the system is working at its maximum throughput, while the WW strategy turns out to be preferable for the lower values of market demand, both from a time and an energy expenditure perspective.
Managing Multiple Mobile Resources
Authors: Feldkord Björn , Knollmann Till , Malatyali Manuel , Heide Friedhelm Meyer auf der 
Published: January 2021

AbstractWe extend the Mobile Server problem introduced in Feldkord and Meyer auf der Heide (TOPC 6(3), 14:1–14:17 2019) to a model where k identical mobile resources, here named servers, answer requests appearing at points in the Euclidean space. To reduce communication costs, the positions of the servers can be adapted by a limited distance ms per round for each server. The costs are measured similarly to the classical Page Migration problem: i.e., answering a request induces costs proportional to the distance to the nearest server, and moving a server induces costs proportional to the distance multiplied with a weight D. We show that, in our model, no online algorithm can have a constant competitive ratio: i.e., one which is independent of the input length n, even if an augmented moving distance of (1 + δ)ms is allowed for the online algorithm. Therefore we investigate a restriction of the power of the adversary dictating the sequence of requests: We demand locality of requests: i.e., that consecutive requests come from points in the Euclidean space with distance bounded by some constant mc. We show constant lower bounds on the competitiveness in this setting (independent of n, but dependent on k, ms and mc). On the positive side, we present a deterministic online algorithm with bounded competitiveness when an augmented moving distance and locality of requests is assumed. Our algorithm simulates any given algorithm for the classical k-Page Migration problem as guidance for its servers and extends it by a greedy move of one server in every round. The resulting competitive ratio is polynomial in the number of servers k, the ratio between mc and ms, the inverse of the augmentation factor 1/δ and the competitive ratio of the simulated k-Page Migration algorithm. We also show how to directly adapt the Double Coverage algorithm (Chrobak et al. SIAM J. Discrete Math. 4(2), 172–181 11) for the k-Server problem to receive an algorithm with improved competitiveness on the line.
Residual stresses in hot bulk formed parts: two-scale approach for austenite-to-martensite phase transformation
Authors: Uebing Sonja , Brands Dominik , Scheunemann Lisa , Schröder Jörg 
Published: January 2021

AbstractIn production engineering, current research focuses on the induction of targeted residual stress states in components in order to improve their properties. Therein, the combination of experiment and simulation plays an important role. In this contribution, a focus is laid on the investigation of hot forming processes with subsequent cooling. A numerical approach is presented to analyze the distribution of residual stresses resulting from cooling of a cylinder with an eccentric hole made of chromium-alloyed steel. The occurring phase transformation, which is evoked by cooling, is considered in order to compute residual stress distributions inside the material.
Information stored in memory affects abductive reasoning
Authors: Klichowicz Anja , Lippoldt Daniela Eileen , Rosner Agnes , Krems Josef F. 
Published: January 2021

AbstractAbductive reasoning describes the process of deriving an explanation from given observations. The theory of abductive reasoning (TAR; Johnson and Krems, Cognitive Science 25:903–939, 2001) assumes that when information is presented sequentially, new information is integrated into a mental representation, a situation model, the central data structure on which all reasoning processes are based. Because working memory capacity is limited, the question arises how reasoning might change with the amount of information that has to be processed in memory. Thus, we conducted an experiment (N = 34) in which we manipulated whether previous observation information and previously found explanations had to be retrieved from memory or were still visually present. Our results provide evidence that people experience differences in task difficulty when more information has to be retrieved from memory. This is also evident in changes in the mental representation as reflected by eye tracking measures. However, no differences are found between groups in the reasoning outcome. These findings suggest that individuals construct their situation model from both information in memory as well as external memory stores. The complexity of the model depends on the task: when memory demands are high, only relevant information is included. With this compensation strategy, people are able to achieve similar reasoning outcomes even when faced with tasks that are more difficult. This implies that people are able to adapt their strategy to the task in order to keep their reasoning successful.
New Approach to Distinguish Copper Molten Marks Based on Quantitative Microstructure Analysis Using Electron Backscatter Diffraction
Authors: Park Jinyoung , Kang Joo-Hee , Lee Eui Pyeong , Ko Young Ho , Bang Sun Bae 
Published: January 2021

AbstractMolten marks identified at a fire site can aid in determining the cause of a fire. Quantitative analysis of such molten marks has not yet been reported, despite several identification methods for molten marks being proposed based on optical micrographs. Herein, we propose a new methodology to establish the quantitative microstructure parameters of the molten marks using electron backscatter diffraction (EBSD). The globules were generated by heating the copper conductor to 1100°C in a non-energized state. Then, the arc beads were prepared by shorting the copper wire at 25°C and 900°C in an energized state. The globules did not show evident demarcation lines and indicated that the microstructure consisted of globular or dendritic grains; this demonstrated that their characteristics were distinctly different from those of arc beads. However, the primary arc beads (PABs) shorted at 25°C exhibited a strong (001) texture perpendicular to the demarcation line and comprised large fractions of columnar grains with a small grain aspect ratio (GAR). The microstructure of secondary arc beads (SABs) shorted at 900°C presented a mixture of elongated and equiaxed grains with a large GAR and no specific development of texture. The GAR and (001) fraction perpendicular to the demarcation line could be discriminant parameters of PABs and SABs. Consequently, EBSD methods can be newly applied for the classification of globules, PABs, and SABs based on the quantitative microstructure information and orientation distribution.
Prospective Intention-Based Lifestyle Contracts: mHealth Technology and Responsibility in Healthcare
Authors: Feng-Gu Emily , Everett Jim , Brown Rebecca C. H. , Maslen Hannah , Oakley Justin , Savulescu Julian 
Published: January 2021

AbstractAs the rising costs of lifestyle-related diseases place increasing strain on public healthcare systems, the individual’s role in disease may be proposed as a healthcare rationing criterion. Literature thus far has largely focused on retrospective responsibility in healthcare. The concept of prospective responsibility, in the form of a lifestyle contract, warrants further investigation. The responsibilisation in healthcare debate also needs to take into account innovative developments in mobile health technology, such as wearable biometric devices and mobile apps, which may change how we hold others accountable for their lifestyles. Little is known about public attitudes towards lifestyle contracts and the use of mobile health technology to hold people responsible in the context of healthcare. This paper has two components. Firstly, it details empirical findings from a survey of 81 members of the United Kingdom general public on public attitudes towards individual responsibility and rationing healthcare, prospective and retrospective responsibility, and the acceptability of lifestyle contracts in the context of mobile health technology. Secondly, we draw on the empirical findings and propose a model of prospective intention-based lifestyle contracts, which is both more aligned with public intuitions and less ethically objectionable than more traditional, retrospective models of responsibility in healthcare.
Exploring explanations for the gender gap in study abroad: a case study of the Netherlands
Authors: Van Mol Christof 
Published: January 2021

AbstractThe overrepresentation of female students in study abroad programmes across the Western world represents one of the major gaps in scientific research on study abroad. In this paper, I explore possible theoretical and empirical explanations, drawing on Personal Investment Theory and investigating study abroad motivations and decisions of a nationally representative sample of higher education students in the Netherlands between 2006 and 2015. The analyses specifically focus on the role of parents, academic self-concept and perceived goals in female and male students decision-making process to participate in study abroad programmes. The results reveal that maternal educational attainment level potentially plays a crucial role in explaining the decision-making process of both male and female students, as well as in explaining the overrepresentation of female students. The findings indicate that female students whose mothers have a medium educational attainment level are more likely to study abroad for exploration motives, whereas female students with lower educated mothers are more motivated by professional development purposes. As such, the results suggest mothers might motivate their daughters to study abroad in order to achieve intergenerational social mobility. Together, the presented findings offer fresh theoretical and empirical explanations of the gender gap in study abroad. Furthermore, the generated insights open up new directions for future research, indicating particularly the potential of social reproduction theories for explaining the gender gap in study abroad.