The Compressible to Incompressible Limit of 1D Euler Equations: the Non Smooth Case

We prove a rigorous convergence result for the compressible to incompressible limit of weak entropy solutions to the isothermal 1D Euler equations.Comment: 16 page

The Demons of Coed Intramural Sports

The purpose of this assignment was to select a topic within the realms of gender issues, complete research in the library, and conduct personal research in the form of a survey or an interview. I knew I wanted to select a topic that was relative to me and my community. After talking to several of my peers, I realized there was a large controversy over the topic of gender specific rules in coed intramural sports. Thus, I decided to delve into the issue by undertaking it as my essay topic. Researching in the library and finding many scholarly sources as well as other sources from students at varying universities allowed me to form my opinion and mark my standpoint in the debate. My survey gave me deeper insight to the sentiment that the student body held towards the gender specific rules in their intramural sports. This permitted me to tailor my argument to specifically address the University of Dayton, or my immediate community. I created many drafts of my survey and received feedback from my peer-editing group to make sure I was asking the correct questions to receive answers that addressed the topic at hand. This may have been the hardest part of the research process, because sometimes it was difficult to ask a question without leading the respondent to give a specific answer. However, with the guidance of my peer editing group I developed a strong survey that produced lucrative results. It seemed that the student body was truly interested in the controversy of gender specific rules in coed intramural sports. After gathering my research, I began the drafting process. With the aid of my peer-editing group, feedback from my professor, Dr. Vorachek, and advice from the Write Place, I developed a piece that truly reflects my standpoint on this gender issue and calls for a change

The swiss army knife of job submission tools: grid-control

Grid-control is a lightweight and highly portable open source submission tool that supports virtually all workflows in high energy physics (HEP). Since 2007 it has been used by a sizeable number of HEP analyses to process tasks that sometimes consist of up 100k jobs. grid-control is built around a powerful plugin and configuration system, that allows users to easily specify all aspects of the desired workflow. Job submission to a wide range of local or remote batch systems or grid middleware is supported. Tasks can be conveniently specified through the parameter space that will be processed, which can consist of any number of variables and data sources with complex dependencies on each other. Dataset information is processed through a configurable pipeline of dataset filters, partition plugins and partition filters. The partition plugins can take the number of files, size of the work units, metadata or combinations thereof into account. All changes to the input datasets or variables are propagated through the processing pipeline and can transparently trigger adjustments to the parameter space and the job submission. While the core functionality is completely experiment independent, integration with the CMS computing environment is provided by a small set of plugins.Comment: 8 pages, 7 figures, Proceedings for the 22nd International Conference on Computing in High Energy and Nuclear Physic

Supplier development for sustainability: contextual barriers in global supply chains

Purpose – The purpose of this paper is to explore contextual barriers to supplier development for sustainability (SDS) in global supply chains and managerial remedies to mitigate such barriers. Design/methodology/approach – A dyadic case study design was adopted with a Western European buyer and six of its Chinese suppliers. The database consists of 41 interviews and 81 documents. Findings – Contextual barriers to SDS in global supply chains derive from complexities in the sustainability concept, socio-economic differences, spatial and linguistic distance, as well as cultural differences between buyers and suppliers. Partial remedies include effective joint communications, an open organizational culture, and the fostering of cross-contextual understanding. Research limitations/implications – The findings contribute to theory development at the intersection of sustainable and global supply chain management research. They help to explain why scarce sustainability-related progress in global supply chains has occurred in recent years. Practical implications – The identified barriers facilitate managerial decision making that will expedite SDS progress in global contexts. Social implications – By diffusing knowledge regarding available remedies, the study contributes to improving SDS effectiveness, thereby fostering sustainability capabilities and performance of suppliers. Originality/value – This research highlights the criticality of contextual barriers to SDS. The barrier effects that stem from differing real-world conceptions of sustainability may inform future sustainable supply chain management research within and beyond SDS

Extending the supply chain visibility boundary: utilizing stakeholders for identifying supply chain sustainability risks

Purpose – The purpose of this paper is to investigate how buying firms facing low supply chain visibility can utilize their stakeholder network to identify salient supply chain sustainability risks (SCSR). Design/methodology/approach – The study employs a design science approach to develop a procedural model for identifying SCSR as a new artifact. A small-scale field-testing study in a food supply chain of a Swiss retail firm demonstrates its applicability and pragmatic validity. Findings – When stakeholder knowledge external to the supply chain is regarded as a valuable resource, a generic understanding of a buying firm’s supply chain suffices to identify SCSR hotspots without creating complexity for the SCSR management. Research limitations/implications – The paper contributes to the study of SCSR by identifying mechanisms buying firms can employ to identify SCSR hotspots and fostering the nascent understanding of responsibility attribution by stakeholders. Moreover, the emerging theory of the supply chain is enriched by paving a way to extend the supply chain visibility boundary. The procedural model is presumably most useful in contexts of elevated stakeholder pressure and low supply chain visibility. Future research should seek to validate and improve the effectiveness of the newly designed artifact. Practical implications – The procedural model is directly applicable in corporate practice to the identification of SCSR. Moreover, its application fosters the understanding of a firm’s supply chain and its stakeholder network. Originality/value – SCSR is an increasingly important phenomenon in corporate practice that has received only scarce research attention. The design science approach represents a valuable means for generating theoretical insights and emergent solutions to the real-world problem of SCSR identification. Keywords Sustainability, Risk management, Stakeholder management, Design science, Supply chain visibilit

Complex nitrogen cycling in the sponge Geodia barretti

Marine sponges constitute major parts of coral reefs and deep-water communities. They often harbour high amounts of phylogenetically and physiologically diverse microbes, which are so far poorly characterized. Many of these sponges regulate their internal oxygen concentration by modulating their ventilation behaviour providing a suitable habitat for both aerobic and anaerobic microbes. In the present study, both aerobic (nitrification) and anaerobic (denitrification, anammox) microbial processes of the nitrogen cycle were quantified in the sponge Geodia barretti and possible involved microbes were identified by molecular techniques. Nitrification rates of 566 nmol N cm(-3) sponge day(-1) were obtained when monitoring the production of nitrite and nitrate. In support of this finding, ammonia-oxidizing Archaea (crenarchaeotes) were found by amplification of the amoA gene, and nitrite-oxidizing bacteria of the genus Nitrospira were detected based on rRNA gene analyses. Incubation experiments with stable isotopes ((15)NO(3)(-) and (15)NH(4)(+)) revealed denitrification and anaerobic ammonium oxidation (anammox) rates of 92 nmol N cm(-3) sponge day(-1) and 3 nmol N cm(-3) sponge day(-1) respectively. Accordingly, sequences closely related to 'Candidatus Scalindua sorokinii' and 'Candidatus Scalindua brodae' were detected in 16S rRNA gene libraries. The amplification of the nirS gene revealed the presence of denitrifiers, likely belonging to the Betaproteobacteria. This is the first proof of anammox and denitrification in the same animal host, and the first proof of anammox and denitrification in sponges. The close and complex interactions of aerobic, anaerobic, autotrophic and heterotrophic microbial processes are fuelled by metabolic waste products of the sponge host, and enable efficient utilization and recirculation of nutrients within the sponge-microbe system. Since denitrification and anammox remove inorganic nitrogen from the environment, sponges may function as so far unrecognized nitrogen sinks in the ocean. In certain marine environments with high sponge cover, sponge-mediated nitrogen mineralization processes might even be more important than sediment processes

Signal-to-Noise Measurements on Irradiated CMS Tracker Detector Modules in an Electron Testbeam

The CMS experiment at the Large Hadron Collider at CERN is in the last phase of its construction. The harsh radiation environment at LHC will put strong demands in radiation hardness to the innermost parts of the detector. To assess the performance of irradiated microstrip detector modules, a testbeam was conducted at the Testbeam 22 facility of the DESY research center. The primary objective was the signal-to-noise measurement of irradiated CMS Tracker modules to ensure their functionality up to 10 years of LHC operation. The paper briefly summarises the basic setup at the facility and the hardware and software used to collect and analyse the data. Some interesting subsidiary results are shown, which confirm the expected behaviour of the detector with respect to the signal-to-noise performance over the active detector area and for different electron energies. The main focus of the paper are the results of the signal-to-noise measurements for CMS Tracker Modules which were exposed to different radiation doses

The prospects for blended learning in teaching English for academic purposes to TPU master's and postgraduate students

The article covers the issue of blended learning advantages in teaching English for academic purposes (EAP) within Master's and Postgraduate's programmes. The course is aimed at developing students communicative and professional competences, which will contribute to their high performance and active participation in scientific conferences and academic mobility. Blended learning is chosen as a new perspective model of teaching EAP which satisfies the demands of present day educational paradigm being more flexible, productive and cost efficient

Enabling Technologies for Silicon Microstrip Tracking Detectors at the HL-LHC

While the tracking detectors of the ATLAS and CMS experiments have shown excellent performance in Run 1 of LHC data taking, and are expected to continue to do so during LHC operation at design luminosity, both experiments will have to exchange their tracking systems when the LHC is upgraded to the high-luminosity LHC (HL-LHC) around the year 2024. The new tracking systems need to operate in an environment in which both the hit densities and the radiation damage will be about an order of magnitude higher than today. In addition, the new trackers need to contribute to the first level trigger in order to maintain a high data-taking efficiency for the interesting processes. Novel detector technologies have to be developed to meet these very challenging goals. The German groups active in the upgrades of the ATLAS and CMS tracking systems have formed a collaborative "Project on Enabling Technologies for Silicon Microstrip Tracking Detectors at the HL-LHC" (PETTL), which was supported by the Helmholtz Alliance "Physics at the Terascale" during the years 2013 and 2014. The aim of the project was to share experience and to work together on key areas of mutual interest during the R&D phase of these upgrades. The project concentrated on five areas, namely exchange of experience, radiation hardness of silicon sensors, low mass system design, automated precision assembly procedures, and irradiations. This report summarizes the main achievements

Survival at the expense of the weakest? Managing modern slavery risks in supply chains during COVID-19

This paper reflects on the implications of the Coronavirus (COVID-19) pandemic on modern slavery risks in supply chains. We first reason that the global supply and demand shock resulting from COVID-19 exacerbates workers’ vulnerability to modern slavery. Then, we discuss challenges firms face to detect, prevent, and mitigate increasing modern slavery risks in supply chains during COVID-19. We conclude our paper by arguing that proactive, value-oriented, and long-term supply chain management approaches increase firms’ resilience to cope with highly volatile and extreme events, such as COVID 19