cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ανάπτυξη μεθόδου για τον προσδιορισμό φυτοφαρμάκων σε μεταθανάτια δείγματα αίματος και ουρών με την τεχνική της υγρής χρωματογραφίας σε σύζευξη με φασματομετρία μαζών σε σειρά
Creators: name: Μουσκεφτάρα, Θωμαή Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2021
Subjects: Φυτοφάρμακα
Αίμα ούρα
Υγρή χρωματογραφία
Φασματομετρία μαζών
Pesticides
LC-MS/MS
SPE, LLE, QuECheRs
Blood, Urine

description: Η δηλητηρίαση από φυτοφάρμακα αποτελεί συχνό φαινόμενο λόγω της ευρείας χρήσης τους, της εύκολης πρόσβασης και της υψηλής τοξικότητάς τους ακόμη και σε μικρές συγκεντρώσεις. Οι περισσότεροι θάνατοι έχουν παρατηρηθεί από την ακούσια λήψη ή την κατάποση με σκοπό την αυτοκτονία, εντομοκτόνων όπως τα οργανοφωσφορικά, τα καρβαμικά και τα νεονικοτινοειδή, Επομένως είναι σημαντικό για ένα εργαστήριο τοξικολογίας να έχει στη διάθεσή του μια μέθοδο για τον γρήγορο προσδιορισμό αυτών των ενώσεων σε υποστρώματα όπως το αίμα και τα ούρα. Για το λόγο αυτό αναπτύχθηκε μια απλή, γρήγορη και αξιόπιστη μέθοδος για τον προσδιορισμό 9 φυτοφαρμάκων στο αίμα και στα ούρα χρησιμοποιώντας το LC-MS / MS. Προκειμένου να βρεθεί η καταλληλότερη τεχνική προκατεργασίας των δειγμάτων, συγκρίθηκαν τρεις διαφορετικές τεχνικές: η εκχύλιση στερεάς φάσης (Solid phase extraction, SPE), η καταβύθιση πρωτεϊνών και η εκχύλιση QuEChERS. Στην εκχύλιση QuEChERS εφαρμόστηκαν 4 διαφορετικά πρωτόκολλα. Τα LOQ για τις ενώσεις στόχους ήταν αρκετά χαμηλά για να ανιχνεύσουν φυτοφάρμακα στα δείγματα ούρων και αίματος. Η τελική βελτιστοποιημένη αναλυτική μέθοδος επικυρώθηκε πλήρως με τις τιμές παραμέτρων όπως γραμμικότητα, ακρίβεια, επαναληψιμότητα, ενδιάμεση πιστότητα, ανάκτηση, επίδραση υποστρώματος και σταθερότητα να βρίσκονται εντός των αποδεκτών ορίων. Τέλος, η μέθοδος εφαρμόστηκε με επιτυχία σε τρία μεταθανάτια περιστατικά δηλητηρίασης από φυτοφάρμακα.
description: Pesticide poisoning is a common occurrence due to their widespread use, easy access and high toxicity even in small concentrations. Most fatalities have been observed in groups such as organophosphates, carbamates and neonicotinoids, making important for a toxicology laboratory to have at its disposal a method for the rapid determination of these compounds in blood and urine. A simple, fast and reliable method was developed for the determination of 9 pesticides in blood and urine using the LC-MS/MS. In order to find the most suitable sample pretreatment technique, three different sample preparation procedures: SPE, protein precipitation and QuEChERS were compared, while in the last one, 4 different protocols were applied. The LOQs for the target compounds were low enough to detect pesticides in urine and blood samples. The final optimized analytical method was fully validated with the values of parameters such as calibration linearity, accuracy, precision, recovery, matrix effect and stability being within the acceptable limits. Finally, the established method was successfully applied to determinate pesticides in three postmortem cases of pesticides poisoning.
Insights of innovation and competitiveness in meat supply chains
Creators: name: Fernandes, Alice Munz
name: De Souza Teixeira, Odilene
name: Rios, Heiter Vieria
name: Canozzi, Maria Eugenia Andrighetto
name: Schultz, Glauco
name: Barcellos, Julio Otavio Jardim
name: Fernandes, Alice Munz
name: De Souza Teixeira, Odilene
name: Rios, Heiter Vieria
name: Canozzi, Maria Eugenia Andrighetto
name: Schultz, Glauco
name: Barcellos, Julio Otavio Jardim
Publisher: name: Unknown
Year: 2018
Subjects: subject: Agribusiness
subject: Marketing
subject: FOS: Economics and business
subject: agribusiness
subject: competitive advantage
subject: convergence
subject: market relations

description: The world demand for food in parallel with environmental concerns is a paradigm for the competitiveness of agro-industrial production chains. The present study intended to propose insights on the contribution of innovation and competitiveness in meat production chains. A systematic review of the literature was carried out, considering manuscripts published in the Scopus, Web of Science and Science Direct databases. Based on the search and exclusion criteria, the analyzed portfolio consisted of 18 works related to the main animal production chains (i.e. pork, chicken, beef, and sheep). The results obtained include three theoretical constructs, under which the studies of competitiveness and innovation in meat production chains were based, namely: (1) institutional environment; (2) business capacity; and (3) consumer behavior. These are composed of a posteriori variables, which have influences in the innovation and competitiveness of such systems, meeting the postulate by the literature.
Dynamics of Crossover from a Chaotic to a Power Law State in Jerky Flow
Creators: name: Bharathi, M. S.
name: Ananthakrishna, G.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We study the dynamics of an intriguing crossover from a chaotic to a power law state as a function of strain rate within the context of a recently introduced model which reproduces the crossover. While the chaotic regime has a small set of positive Lyapunov exponents, interestingly, the scaling regime has a power law distribution of null exponents which also exhibits a power law. The slow manifold analysis of the model shows that while a large proportion of dislocations are pinned in the chaotic regime, most of them are pushed to the threshold of unpinning in the scaling regime, thus providing insight into the mechanism of crossover.
description: 5 pages, 3 figures. In print in Phy. Rev. E Rapid Communications
Psapharochrus atrosignatus
Creators: name: Monné, Miguel A.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Psapharochrus
Psapharochrus atrosignatus

description: 7. Psapharochrus atrosignatus (Melzer, 1932)
Type locality — Brazil, Espírito Santo: Santa Teresa. (MZSP). Distribution — Brazil (Minas Gerais to São Paulo).
 Acanthoderes atrosignata Melzer, 1932a: 222, pl. 3, fig. 2; Zikán & Zikán, 1944: 35 (distr.); Zikán & Wygodzinsky, 1948: 44 (type); Zajciw, 1958a: 18 (distr.); 1968d: 141 (distr.); 1972a: 67 (distr.); 1974a: 77 (distr.).
 Acanthoderes (Psapharochrus) atrosignata; Gilmour, 1965: 616 (cat.).
description: Published as part of Monné, Miguel A., 2005, Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae, pp. 1-760 in Zootaxa 1023 (1) on pages 1-760, DOI: 10.11646/zootaxa.946.1.1, http://zenodo.org/record/5049553
The cost of a future low-carbon electricity system without nuclear power for Sweden
Creators: name: Kan, Xiaoming
name: Hedenus, Fredrik
name: Reichenberg, Lina
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: To achieve the goal of deep decarbonization of the electricity system, more and more variable renewable energy (VRE) is being adopted. However, there is no consensus among researchers on whether the goal can be accomplished without large cost escalation if nuclear power is excluded in the future electricity system. In Sweden, where nuclear power generated 41% of the annual electricity supply in 2014, the official goal is 100% renewable electricity production by 2040. Therefore, we investigate the cost of a future low-carbon electricity system without nuclear power for Sweden. We model the European electricity system with a focus on Sweden and run a techno-economic cost optimization model for capacity investment and dispatch of generation, transmission, storage and demand-response, under a CO2 emission constraint of 10 g/kWh. Our results show that there are no, or only minor, cost benefits to reinvest in nuclear power plants in Sweden once the old ones are decommissioned. This holds for a large range of assumptions on technology costs and possibilities for investment in additional transmission capacity. We contrast our results with the recent study that claims severe cost penalties for not allowing nuclear power in Sweden and discuss the implications of methodology choice.
description: 35 pages, 6 figures; submitted to Energy
Vertical coordination in the Brazilian milk supply chain: the case of 3B Agro LTDA
Creators: name: Hayer, Silas Simeon
name: Staduto, Jefferson Andronio Ramundo
name: Darr, Dietrich
name: Hayer, Silas Simeon
name: Staduto, Jefferson Andronio Ramundo
name: Darr, Dietrich
Publisher: name: Unknown
Year: 2018
Subjects: subject: Demand and Price Analysis
subject: Livestock Production/Industries
subject: vertical coordination
subject: contract farming
subject: supply chain
subject: dairy industry
subject: incomplete contracts
subject: principal-agent problem
subject: business expansion

description: The dairy business is characterized by generally low profit margins due to a very competitive market environment. Dairy farmers and milk processing companies, therefore, constantly seek to optimize their technical production processes in pursuit of further cost reductions, e.g. by means of improving herd management, milking and feeding practices. In addition, innovative business strategies may create competitive advantage in response to market conditions. While vertical coordination or even integration have been established successfully in most sectors of animal husbandry including poultry, pork and beef production, this strategy is mostly limited to supplying contracts and input support within the dairy sector. Various organizational models of increasing vertical coordination in dairy production exist, with great variation in terms of operational performance and profitability. Using the example of 3B Agro LTDA’s dairy production located in the municipality of Toledo, Brazil, the case study illustrates the significant efficiency potential that currently exists in the Brazilian dairy supply chain. The prevalence of short-term contractual commitments and an influential role of independent intermediaries give room to considerable opportunism of market participants, various principal-agent problems and severe issues regarding milk quality. The case study illustrates that, vertical coordination can increase control and efficiency along the supply chain. It also points out the importance of strong managerial competencies and capabilities of dairy farm managers in order to exploit fully the efficiency potential provided by vertical coordination.
Telerehabilitation’s Safety, Feasibility, and Exercise Uptake in Cancer Survivors: Process Evaluation
Creators: name: Dennett, Amy
name: Harding, Katherine
name: Reimert, J
name: Morris, Rebecca
name: Parente, P
name: Taylor, Nicholas
Publisher: name: La Trobe
Year: 2022
Subjects: classificationCode: 3211
subject: Oncology and carcinogenesis
classificationCode: 42
subject: Health sciences
subject: FOS: Health sciences
classificationCode: 4203
subject: Health services and systems
classificationCode: 4205
subject: Nursing
classificationCode: 4206
subject: Public health

description: Background: Access to exercise for cancer survivors is poor despite global recognition of its benefits. Telerehabilitation may overcome barriers to exercise for cancer survivors but is not routinely offered. Objective: Following the rapid implementation of an exercise-based telerehabilitation program in response to COVID-19, a process evaluation was conducted to understand the impact on patients, staff, and the health service with the aim of informing future program development. Methods: A mixed methods evaluation was completed for a telerehabilitation program for cancer survivors admitted between March and December 2020. Interviews were conducted with patients and staff involved in implementation. Routinely collected hospital data (adverse events, referrals, admissions, wait time, attendance, physical activity, and quality of life) were also assessed. Patients received an 8-week telerehabilitation intervention including one-on-one health coaching via telehealth, online group exercise and education, information portal, and home exercise prescription. Quantitative data were reported descriptively, and qualitative interview data were coded and mapped to the Proctor model for implementation research. Results: The telerehabilitation program received 175 new referrals over 8 months. Of those eligible, 123 of 150 (82%) commenced the study. There were no major adverse events. Adherence to health coaching was high (674/843, 80% of scheduled sessions), but participation in online group exercise classes was low (n=36, 29%). Patients improved their self-reported physical activity levels by a median of 110 minutes per week (IQR 90-401) by program completion. Patients were satisfied with telerehabilitation, but clinicians reported a mixed experience of pride in rapid care delivery contrasting with loss of personal connections. The average health service cost per patient was Aus $1104 (US $790). Conclusions: Telerehabilitation is safe, feasible, and improved outcomes for cancer survivors. Learnings from this study may inform the ongoing implementation of cancer telerehabilitation.
Determinants of the adoption of biological control of the Diaphorina citri by citrus growers in São Paulo State, Brazil
Creators: name: Adami, Andreia C.O.
name: Miranda, Silvia H.G.
name: Delalibera Jr., Italo
name: Adami, Andreia C.O.
name: Miranda, Silvia H.G.
name: Delalibera Jr., Italo
Publisher: name: Unknown
Year: 2018
Subjects: subject: Crop Production/Industries
subject: biological control
subject: greening
subject: willingness to adopt
subject: contingent valuation
subject: citrus

description: This study evaluates the adoption of biological control of the Diaphorina citri and the citrus growers’ willingness to pay for biopesticides. The citrus greening continues to spread over Brazilian orchards, reaching 17.89% of all citrus trees in 2015. Utilizing data from a survey with decision-making agents from the sector, this paper used a logit model to obtain the determinants and a contingent valuation method to elicit growers’ willingness to pay for a biopesticide. Results showed high acceptability of growers to the biocontrol. Important factors regarding its adoption included experience in growing citrus, a high level of education and dependence on citrus production. Producers from São Paulo’s southern region paid the highest value for the biopesticide. We observed that worsening of the disease has led players from citrus chain to search for new forms of insect control.
Psapharochrus bialbomaculatus
Creators: name: Monné, Miguel A.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Psapharochrus
Psapharochrus bialbomaculatus

description: 8. Psapharochrus bialbomaculatus (Zajciw, 1964)
Type locality — Peru, Junin; Satipo. (MNRJ). Distribution — Peru.
 Acanthoderes bialbomaculata Zajciw, 1964c: 159, fig. 1; Julio et al., 2000: 30 (holotype). Acanthoderes (Psapharochrus) bialbomaculatus; Monné, 1994e: 58 (cat.).
description: Published as part of Monné, Miguel A., 2005, Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae, pp. 1-760 in Zootaxa 1023 (1) on pages 1-760, DOI: 10.11646/zootaxa.946.1.1, http://zenodo.org/record/5049553
Eccentricity distribution of wide low-mass binaries
Creators: name: Tokovinin, Andrei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Distribution of eccentricities of very wide (up to 10 kau) low-mass binaries in the solar neighborhood is studied using the catalog of El-Badry and Rix (2018) based on Gaia. Direction and speed of relative motions in wide pairs contain statistical information on the eccentricity distribution, otherwise inaccessible owing to very long orbital periods. It is found that the eccentricity distribution is close to the linear (thermal) one f(e) = 2e$ However, pairs with projected separations <200 au have less eccentric orbits, while f(e) for very wide pairs appears to be slightly super-thermal, with an excess of very eccentric orbits. Eccentricity of any wide binary can be constrained statistically using direction and speed of its motion. Thermal eccentricity distribution signals an important role of stellar dynamics in the formation of wide binaries, although disk-assisted capture also can produce such pairs with eccentric orbits.
description: Accepted for publication in MNRAS. 7 pages, 7 figures, 2 tables
Evaluating the utility of antibiotic prophylaxis prior to ESWL in patients with sterile urine: a systematic review and meta-analysis
Creators: name: Μέμμος, Δημήτριος Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2021
Subjects: Λιθοθρυψία
Λιθιαση
Αντιβιοτική προφύλαξη
Eswl
Lithiasis
Antibiotic prophylaxis

description: Aim of the studyː To evaluate the effect of antibiotic prophylaxis (AP) on asymptomatic bacteriuria (AB) and urinary tract infection (UTI) in patients with sterile urine undergoing ESWL Materials and Methods: PubMed, Scopus, Web of Science and Cochrane Registry were searched systematically for randomized clinical trials assessing the effect of AP in patients with sterile urine undergoing SWL up to May 2020. Risk ratios were used to compare dichotomous outcomes. A stratified analysis was performed depending on the risk of bias assessment of the included studies. Subgroup analysis was performed in patients that underwent instrumentation of the urinary tract. Results:16 studies were evaluated including 2442 patients. When evaluating all the included studies (regardless of the risk of bias assessment), the risk of AB was RR: 0.88, 95% CI:0.64-1.21, p=0.42 and the risk of UTI was RR: 0.55 95% CI: 0.22-1.36, p=0.19. When excluding the high risk of bias studies, the risk for AB was RR: 0.9, 95% CI: 0.63-1.28, p=0.55 and for UTI RR: 1.18, 95% CI: 0.38-3.72, p=0.77. When evaluating patients that underwent instrumentation of the urinary tract the risk for AB was RR:0.92, 95% CI: 0.66-1.27, p=0.6 and for UTI was RR: 0.69, 95% CI: 0.22-2.22, p-0.54.
description: Σκοπός της μελέτης: Να μελετηθεί η δράση της αντιβιοτικής προφύλαξης στην ασυμπτωματική βακτηριουρια και στην ουρολοίμωξη σε ασθενείς με στείρα ούρα που υπόκεινται σε εξωσωματική λιθοθρυψία. Μέθοδοι: Πραγματοποιήθηκε συστηματική ανασκόπηση της βιβλιογραφίας μέσω 3 μηχανών αναζήτησης (PubMed, Web of Science και Cochrane) για τυχαιοποιημένες μελέτες που μελετούσαν τη δράση της αντιβιοτικής προφύλαξης σε ασθενείς με στείρα ουρα που υποβλήθηκαν σε εξωσωματική λιθοθρυψία μέχρι το Μάιο του 2020. Ο σχετικός κίνδυνος χρησιμοποιήθηκε ως μέτρο υπολογισμού διχότομων αποτελεσμάτων. Χρησιμοποιήθηκε στρωματοποιημένη ανάλυση των αποτελεσμάτων με βάση την αξιολόγηση των μελετών για τον βαθμό κινδύνου τους (Risk of Bias). Πραγματοποιήθηκε ανάλυση υποομάδων για ασθενείς που υποβληθηκαν σε χειρισμούς στο ουροποιητικό κατά την περιεγχειρητική περίοδο. Αποτελέσματα: 16 εισάχθηκαν στην μελέτη περιλαμβάνοντας 2442 ασθενείς. Υπολογίζοντας το σύνολο των μελετών ο σχετικός κίνδυνος για ασυμτωματική βακτηριουρία ήταν RR: 0.88, 95% CI:0.64-1.21, p=0.42 και ο σχετικός κίνδυνος για ουρολοίμωξη ήταν RR: 0.55 95% CI: 0.22-1.36, p=0.19. Εξαιρώντας τις μελέτες υψηλού κινδύνου (high risk of bias) ο σχετικός κίνδυνος για ασυμπτωματική βακτηριουρία ήταν: RR: 0.9, 95% CI: 0.63-1.28, p=0.55 και για ουρολοίμωξη RR: 1.18, 95% CI: 0.38-3.72, p=0.77. Στους ασθενείς που υποβλήθηκαν σε χειρισμούς στο ουροποιητικό σύστημα ο σχετικος κίνδυνος για ασυμπτωματική βακτηριουρία ήταν RR:0.92, 95% CI: 0.66-1.27, p=0.6 και για ουρολοίμωξη RR: 0.69, 95% CI: 0.22-2.22, p-0.54.
S-matrix elements and covariant tachyon action in type 0 theory
Creators: name: Garousi, Mohammad R.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We evaluate the sphere level S-matrix element of two tachyons and two massless NS states, the S-matrix element of four tachyons, and the S-matrix element of two tachyons and two Ramon-Ramond vertex operators, in type 0 theory. We then find an expansion for theses amplitudes that their leading order terms correspond to a covariant tachyon action. To the order considered, there are no $T^4$, $T^2(\prt T)^2$, $T^2H^2$, nor $T^2R$ tachyon couplings, whereas, the tachyon couplings $F\bF T$ and $T^2F^2$ are non-zero.
description: 29 pages, latex, no figure
ConAgra foods 2015 and the limits of debt: rewriting a recipe that just didn’t work
Creators: name: White, Susan
name: Trejo-Pech, Carlos
name: Noguera, Magdy
name: White, Susan
name: Trejo-Pech, Carlos
name: Noguera, Magdy
Publisher: name: Unknown
Year: 2018
Subjects: subject: Agribusiness
subject: Agricultural Finance
subject: agribusiness finance
subject: debt level
subject: business strategy
subject: mergers and acquisitions

description: ConAgra Foods purchased Ralcorp, a generic brands packaged foods manufacturer, in January 2013. This purchase made ConAgra the largest private-brand packaged foods company in North America. The purchase was part of the firm’s acquisition strategy, its ‘recipe for growth’ launched in 2012. Instead of moving ConAgra forward, the purchase almost brought ConAgra into bankruptcy. ConAgra had difficulties integrating Ralcorp and the trend for private label (vs. brand name) products declined shortly after Ralcorp’s acquisition. This turn of events was made far worse because ConAgra had borrowed a large amount of debt to make the acquisition. Now, almost three years later in fall 2015 ConAgra had a new CEO, had faced reduced profitability and lower earnings per share and financial distress, and was under the pressure of an influential activist hedge fund advocating for the sale of the private brands segment. This case provides data to assess ConAgra’s situation financially and strategically, and to value the potential divestiture of the private brand business segment.
The emissivity of dust grains in spiral galaxies
Creators: name: Alton, P. B.
name: Xilouris, E. M.
name: Misiriotis, A.
name: Dasyra, K. M.
name: Dumke, M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use the radiation transfer simulation of Xilouris et al. (1999) to constrain the quantity of dust in three nearby spiral galaxies (NGC 4013, NGC 5907 and NGC 4565). The predicted visual optical depth from the model is compared with the thermal continuum radiation detected from NGC 4013 and NGC 5907 at 850 microns and from NGC 4565 at 1.2 mm. The former is based on SCUBA images of NGC 4013 and NGC 5907, reduced and presented for the first time in this work. The comparison of visual optical depth and 850 microns (1.2 mm) emission yields the emissivity of dust grains in the submillimeter (millimeter) waveband. We infer a value of 1.2x10^{4} for the emissivity at 850 microns which is a factor 4 higher than the benchmark, semi-empirical model of Draine & Lee (1984). At 1.2 mm our values are a factor 1.5 higher than this model. Our estimates are more closely aligned with recent measurements carried out in the laboratory on amorphous carbon and silicate particulates. A comparison between the distribution of 850 microns (1.2 mm) surface brightness and the intensity levels in the ^{12}CO(1-0) and 21 cm lines underlines the spatial association between dust detected in the submillimeter/millimeter waveband and molecular gas clouds. We suggest that the relatively high emissivity values that we derive may be attributable to amorphous, fluffy grains situated in denser gas environments.
description: Accepted for publication in A&A
Heavy Quark Production: Theory vs. Experiment
Creators: name: Cacciari, Matteo
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The current status of the comparisons between some experimental results and theoretical predictions for heavy quark production is reviewed. It is shown that the combination of new theoretical tools and better experimental input allows for a good description of charm, bottom and top hadroproduction, with no significant discrepancies between theory and experiment. Theoretical progress in the resummation of large logarithms and inclusion of power corrections for the heavy quark fragmentation function is also discussed.
description: 6 pages, LaTeX, Talk given at the Workshop on High Energy Physics IFAE 2003, Lecce, Italy, 23-26 April 2003
Quantum fluctuations and random matrix theory
Creators: name: Duras, Maciej M.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The random matrix ensembles are applied to the quantum statistical two-dimensional systems of electrons. The quantum systems are studied using the finite dimensional real, complex and quaternion Hilbert spaces of the eigenfunctions. The linear operators describing the systems act on these Hilbert spaces and they are treated as random matrices in generic bases of the eigenfunctions. The random eigenproblems are presented and solved. Examples of random operators are presented with connection to physical problems.
description: 6 pages; "Fluctuations and Noise in Photonics and Quantum Optics", D. Abbott, J. H. Shapiro, Y. Yamamoto, Eds.; Proceedings of SPIE; Society of Photo-optical Instrumentation Engineers, Bellingham, WA, USA, Vol. 5111, 456-459 (2003)
A Quantum Many-Body Instability in the Thermodynamic Limit
Creators: name: Frasca, Marco
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Intrinsic decoherence in the thermodynamic limit is shown for a large class of many-body quantum systems in the unitary evolution in NMR and cavity QED. The effect largely depends on the inability of the system to recover the phases. Gaussian decaying in time of the fidelity is proved for spin systems and radiation-matter interaction.
description: 11 pages, 1 figure. Final version accepted for publication in Modern Physics Letters B
Kurzvideos auf sozialen Medien – Warum es Jugendlichen schwerfällt, mit dem Scrollen aufzuhören: Und wie kann die Offene Kinder- und Jugendarbeit Handlungs-möglichkeiten zur Unterstützung anbieten?
Creators: name: Gasser, Fabian
Publisher: name: Hochschule Luzern – Soziale Arbeit
Year: 2025

description: Die Nutzung von Kurzvideo-Plattformen wie TikTok sowie Instagram Reels und YouTube Shorts prägt die digitale Lebenswelt von Jugendlichen. Ob in der Freizeit, in der Schule oder am Arbeitsplatz – Kurzvideos sind besonders attraktiv, da sie eine unterhaltsame und leicht zugängliche Ablenkung bieten. Zudem sind sie oft die erste Quelle für Trends, Musik und Nachrichten, die Jugendliche ansprechen. Diese Bachelorarbeit untersucht den Einfluss solcher Kurzvideos auf das Verhalten und die psychische Gesundheit von Jugendlichen sowie die damit verbundenen Chancen und Risiken. Studien zeigen, dass algorithmische Empfehlungssysteme und das Plattformdesign suchtähnliches Konsumverhalten fördern können. Neben den Ursachen und Auswirkungen problematischen Konsums wird in dieser Arbeit analysiert, nach welchen Kriterien die Soziale Arbeit Handlungsbedarf in Bezug auf die Nutzung von Kurzvideos bei Jugendlichen sieht. Die gewonnenen Erkenntnisse verdeutlichen, dass hierbei insbesondere die Offene Kinder- und Jugendarbeit (OKJA) eine zentrale Rolle spielt. Dank ihrer Nähe zur Lebenswelt der Jugendlichen und ihrer Expertise in digitalen Fragen kann sie präventiv agieren, Medienkompetenzen stärken und den kritischen Umgang mit digitalen Medien fördern. Im digitalen Zeitalter ist es entscheidend, soziale und gesundheitliche Risiken durch gezielte medienpädagogische Massnahmen frühzeitig zu mindern.
description: + Code Diss LU: hslusa bask + Fussnote: Bachelor-Arbeit, Hochschule Luzern – Soziale Arbeit, Studienrichtung Soziokultur, 2025 + NL-Code: NLLUHSA202502
Imaging from the Visible to the Longwave Infrared wavelengths via an inverse-designed flat lens
Creators: name: Meem, Monjurul
name: Banerji, Sourangsu
name: Majumder, Apratim
name: Garcia, Juan C.
name: Hon, Philip W. C.
name: Sensale-Rodriguez, Berardi
name: Menon, Rajesh
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: It is generally assumed that correcting chromatic aberrations in imaging requires optical elements. Here, we show that by allowing the phase in the image plane to be a free parameter, it is possible to correct chromatic variation of focal length over an extremely large bandwidth, from the visible (Vis) to the longwave infrared (LWIR) wavelengths using a single diffractive surface, i.e., a flat lens. Specifically, we designed, fabricated and characterized a flat, multi-level diffractive lens (MDL) with thickness £ 10μm, diameter ~1mm, and focal length = 18mm, which was constant over the operating bandwidth of l=0.45μm (blue) to 15μm (LWIR). We experimentally characterized the point-spread functions, aberrations and imaging performance of cameras comprised of this MDL and appropriate image sensors. We further show using simulations that such extreme achromatic MDLs can be achieved even at high numerical apertures (NA=0.81). By drastically increasing the operating bandwidth and eliminating several refractive lenses, our approach enables thinner, lighter and simpler imaging systems.
description: arXiv admin note: substantial text overlap with arXiv:1907.06251
Study on the governance mechanism of rural e-commerce service centers in rural China: agency problems and solutions
Creators: name: Cai, Yi
name: Wang, Deqiang
name: Xia, Chunping
name: Wang, Cuicui
name: Cai, Yi
name: Wang, Deqiang
name: Xia, Chunping
name: Wang, Cuicui
Publisher: name: Unknown
Year: 2018
Subjects: subject: Community/Rural/Urban Development
subject: rural e-commerce service
subject: asymmetric information
subject: moral hazard
subject: adverse selection
subject: rural China

description: Agency problems, such as moral hazard and adverse selection, are prevalent in the public service sector, and the Chinese rural e-commerce service sector is no exception. With the focus on the top-down project ‘information and communication technology for development’ implemented in the underdeveloped areas in China, the rural e-commerce service center (RESC) operation mechanism was analyzed in this study. Based on the tension between RESC operators, local governments, and e-commerce service providers that was reported in a field survey, this study further employs the principal-agent framework to analyze the problems of asymmetric information. Based on this analysis, solutions are suggested that can remedy the moral hazard issues in rural e-commerce service delivery, including developing a service evaluation system, promoting the usage of ICTs, and enhancing rural social capital. To address the problem of adverse selection, the RESC recruitment process should be improved. Moreover, by dividing the potential RESC employees into native villagers and e-commerce entrepreneurs, the optimal subsidy schemes can be designed for both types of applicants according to their ability and sensitivity to incentive.
Psapharochrus bicuspis
Creators: name: Monné, Miguel A.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Psapharochrus
Psapharochrus bicuspis

description: 9. Psapharochrus bicuspis (Germar, 1824)
Type locality — Brazil. (Depository unknown). Distribution — Brazil.
 Lamia bicuspis Germar, 1824: 475.
description: Published as part of Monné, Miguel A., 2005, Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae, pp. 1-760 in Zootaxa 1023 (1) on pages 1-760, DOI: 10.11646/zootaxa.946.1.1, http://zenodo.org/record/5049553
On Spatial Consensus Formation: Is the Sznajd Model Different from a Voter Model?
Creators: name: Behera, Laxmidhar
name: Schweitzer, Frank
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Cellular Automata and Lattice Gases (nlin.CG)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: In this paper, we investigate the so-called ``Sznajd Model'' (SM) in one dimension, which is a simple cellular automata approach to consensus formation among two opposite opinions (described by spin up or down). To elucidate the SM dynamics, we first provide results of computer simulations for the spatio-temporal evolution of the opinion distribution $L(t)$, the evolution of magnetization $m(t)$, the distribution of decision times $P(τ)$ and relaxation times $P(μ)$. In the main part of the paper, it is shown that the SM can be completely reformulated in terms of a linear VM, where the transition rates towards a given opinion are directly proportional to frequency of the respective opinion of the second-nearest neighbors (no matter what the nearest neighbors are). So, the SM dynamics can be reduced to one rule, ``Just follow your second-nearest neighbor''. The equivalence is demonstrated by extensive computer simulations that show the same behavior between SM and VM in terms of $L(t)$, $m(t)$, $P(τ)$, $P(μ)$, and the final attractor statistics. The reformulation of the SM in terms of a VM involves a new parameter $σ$, to bias between anti- and ferromagnetic decisions in the case of frustration. We show that $σ$ plays a crucial role in explaining the phase transition observed in SM. We further explore the role of synchronous versus asynchronous update rules on the intermediate dynamics and the final attractors. Compared to the original SM, we find three additional attractors, two of them related to an asymmetric coexistence between the opposite opinions.
description: 22 pages, 20 figures. For related publications see http://www.ais.fraunhofer.de/~frank
Steneotarsonemus Beer 1954: 1229
Creators: name: Lin, Jian-Zhen
name: Zhang, Zhi-Qiang
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Prostigmata
Tarsonemidae
Steneotarsonemus

description: Key to subgenera of Steneotarsonemus in New Zealand
(Adult females; after Lindquist 1986)
 1 Prodorsal bothridial setae vestigial................................................ S. (Mahunkacarus)
­ Prodorsal bothridial setae well developed.................................................................... 2
 2 Bothridial setae narrowly lanceolate.................................... S. (Neosteneotarsonemus)
 ­ Bothridial setae capitate............................................................. S. (Steneotarsonemus)
description: Published as part of Lin, Jian-Zhen & Zhang, Zhi-Qiang, 2005, New Zealand species of Steneotarsonemus Beer (Acari: Tarsonemidae), pp. 1-22 in Zootaxa 1028 (1) on page 2, DOI: 10.11646/zootaxa.1028.1.1, http://zenodo.org/record/5050127
Changes in substance use and other reinforcing behaviours during the COVID-19 crisis in a general population cohort study of young Swiss men
Creators: name: Studer, Joseph
name: Marmet, Simon
name: Gmel, Gerhard
name: Wicki, Matthias
name: Labhart, Florian
name: Gachoud, Céline
name: Daeppen, Jean-Bernard
name: Bertholet, Nicolas
Publisher: name: La Trobe
Year: 2022
Subjects: classificationCode: 32
subject: Biomedical and clinical sciences
classificationCode: 3202
subject: Clinical sciences
classificationCode: 42
subject: Health sciences
subject: FOS: Health sciences
classificationCode: 4203
subject: Health services and systems
classificationCode: 52
subject: Psychology
subject: FOS: Psychology
classificationCode: 5203
subject: Clinical and health psychology

description: Background and Aims: There are concerns about the potential impact of the coronavirus disease (COVID-19) pandemic on substance use (SU) and other reinforcing behaviours (ORB). This paper investigates changes in SU and ORB among young men during the COVID-19 crisis (i.e. March-June 2020). Methods: Before and during the COVID-19 crisis, 2,344 young Swiss men completed questionnaires covering SU (i.e. alcohol, cigarettes, illegal cannabis), ORB (i.e. gaming, watching TV series, internet pornography) and sociodemographic and work-related characteristics (i.e. deterioration in the work situation, change in working hours, change in working hours from home, healthcare workers' and other professionals' contacts with potentially infected people, linguistic region, call up to military or civil protection unit, living situation, age). Results: Latent-change score models showed significant decreases of 17% for drinking volume and frequency of heavy episodic drinking, and a significant increase of 75% for time spent gaming and watching TV series. Subgroups showed greater relative increases. French-speaking participants, those who experienced a deterioration in their work situation and healthcare workers in contact with potentially infected people reported increased cigarette use. Those without children increased gaming, whereas those who worked fewer hours, experienced a deterioration in their work situation or were French-speaking did more gaming and watched more TV series. Those who lived alone or were German-speaking watched more internet pornography. Conclusion: During the COVID-19 crisis, young Swiss men drank less alcohol and spent more time gaming and watching TV series. Changes in SU and ORB were not homogenous in the young Swiss men population.
Additional file 3 of Vascular access for renal replacement therapy among 459 critically ill patients: a pragmatic analysis of the randomized AKIKI trial
Creators: name: Benichou, Nicolas
name: Saïd Lebbah
name: Hajage, David
name: Martin-Lefèvre, Laurent
name: Pons, Bertrand
name: Boulet, Eric
name: Boyer, Alexandre
name: Chevrel, Guillaume
name: Lerolle, Nicolas
name: Carpentier, Dorothée
name: De Prost, Nicolas
name: Lautrette, Alexandre
name: Bretagnol, Anne
name: Mayaux, Julien
name: Nseir, Saad
name: Megarbane, Bruno
name: Thirion, Marina
name: Forel, Jean-Marie
name: Maizel, Julien
name: Hodane Yonis
name: Markowicz, Philippe
name: Thiery, Guillaume
name: Schortgen, Frederique
name: Tubach, Florence
name: Jean-Damien Ricard
name: Dreyfuss, Didier
name: Gaudry, Stéphane
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 3: Table S3. Collinearity control: variance inflation factors for fixed effects factors potentially involved in the choice between femoral and jugular for the first catheter insertion.
Neosteneotarsonemus Tseng & Lo 1980
Creators: name: Lin, Jian-Zhen
name: Zhang, Zhi-Qiang
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Acari
Tarsonemidae
Neosteneotarsonemus

description: Key to world species of S. (Neosteneotarsonemus) (females)
1 Coxal setae 2a close to inner end of apodeme 2........................................................... 2
­ Coxal setae 2a well behind inner end of apodeme 2..................................................... 3
 2 Apodeme 2 connected with prosternal apodeme.............. S. (N.) kerguelenensis (Fain)
­ Apodeme 2 not united with prosternal apodeme........................................................... 4
 3 Setae  c 2  shorter than setae c  1 ............................................. S. (N.) trisetus Lin & Zhang
 ­ Setae  c 2  longer than or as long as setae  c 1 ................................... S. (N.) ramus sp. nov.
4 Scapular setae thickened............................................................................................... 5
 ­ Scapular setae not thickened, sejugal apodeme present......... S. (N.) arcticus Lindquist
 5 Sejugal apodeme absent................................................... S. (N.) mirabilis Tseng & Lo
 ­ Sejugal apodeme with only lateral remnant on each side S. (N.) guangzensis Lin et al.
description: Published as part of Lin, Jian-Zhen & Zhang, Zhi-Qiang, 2005, New Zealand species of Steneotarsonemus Beer (Acari: Tarsonemidae), pp. 1-22 in Zootaxa 1028 (1) on page 3, DOI: 10.11646/zootaxa.1028.1.1, http://zenodo.org/record/5050127
Vibrational properties of hexagonal LiBC: Infrared and Raman spectroscopy
Creators: name: Hlinka, J.
name: Zelezny, V.
name: Gregora, I.
name: Pokorny, J.
name: Fogg, A. M.
name: Claridge, J. B.
name: Darling, G. R.
name: Rosseinsky, M. J.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The paper presents infrared reflectivity and micro-Raman scattering spectra of LiBC powder pellets. The experiment allowed assignment of frequencies of all infrared and Raman active zone center modes. Results are compared with available ab-initio calculations; prediction of large Born effective charges on the nodes of B-C graphene sheets is confirmed.
description: 4 pages, 5 figures (change: Fig 2 replaced)
Seek and you shall find: the role of exploitive and explorative search in a biotechnology firm’s patent claims
Creators: name: Ng, Desmond
name: Sanchez-Aragon, Leonardo
name: Huseynov, Samir
name: Ng, Desmond
name: Sanchez-Aragon, Leonardo
name: Huseynov, Samir
Publisher: name: Unknown
Year: 2018
Subjects: subject: Research and Development/Tech Change/Emerging Technologies
subject: patent claims
subject: exploitive and explorative search
subject: innovation

description: Patents are widely recognized to provide legal protections to a firm’s inventions. However, such protections are dependent upon claims that delineate the exclusive rights of the patent. This study examines theoretically and empirically the role of exploitive and explorative search on a firm’s patent claims in the biotechnology industry. We argue that firms are subject to ‘boundedly rational’ behaviors where firms are unable to cite their patent’s prior art and therefore are unable to identify with their patent’s novel claims. A firm’s exploitive and explorative search is offered as a solution to overcoming such bounded rationality. We argue and find that a biotechnology firm’s exploitive and explorative search has an inverted u-shaped relationship to a firm’s patent claims. A key contribution of this study is that a firm’s citation behavior is not only attributed to strategic and legal motivations, but also be to behavioral explanations.
Strategic resources and smallholder performance at the bottom of the pyramid
Creators: name: Olthaar, Matthias
name: Dolfsma, Wilfred
name: Lutz, Clemens
name: Noseleit, Florian
name: Olthaar, Matthias
name: Dolfsma, Wilfred
name: Lutz, Clemens
name: Noseleit, Florian
Publisher: name: Unknown
Year: 2018
Subjects: subject: Resource /Energy Economics and Policy
subject: resource-based theory
subject: competitive advantage
subject: mixed method
subject: smallholder performance

description: In a competitive business environment at the Bottom of the Pyramid smallholders supplying global value chains may be thought to be at the whims of downstream large-scale players and local market forces, leaving no room for strategic entrepreneurial behavior. In such a context we test the relationship between the use of strategic resources and firm performance. We adopt the Resource Based Theory and show that seemingly homogenous smallholders deploy resources differently and, consequently, some do outperform others. We argue that the ‘resource-based theory’ results in a more fine-grained understanding of smallholder performance than approaches generally applied in agricultural economics. We develop a mixed-method approach that allows one to pinpoint relevant, industry-specific resources, and allows for empirical identification of the relative contribution of each resource to competitive advantage. The results show that proper use of quality labor, storage facilities, time of selling, and availability of animals are key capabilities.
eLTER PLUS Deliverable D9.1 - eLTER network representativeness towards biodiversity pressures and trends
Creators: name: Musche, Martin
name: Marija, Milanović
name: Kühn, Ingolf
Publisher: name: Zenodo
Year: 2024
Subjects: eLTER PLUS
Biodiversity

description: Global biodiversity has changed tremendously over the past 50 years due to the impact ofanthropogenic drivers such as land use change, direct exploitation, pollution, climate change andinvasive species. The eLTER network's biodiversity surveys provide a unique opportunity to investigatethese changes and to assess their impacts. The present report has two main objectives. First, it willinvestigate whether eLTER data are suitable for analysing long‐term biodiversity change at theEuropean scale and whether these changes can be linked to potential drivers. The second aim is toevaluate eLTER workflows and services that benefit the scientific community and to providerecommendations for the further development of the eLTER Research Infrastructure. To address thefirst objective, we conducted a case study in which we analysed changes in the species compositionof plant communities at eLTER sites. The experiences gained from this work were used to address thesecond objective.Changes in species composition within local communities are among the most pronouncedcomponents of biodiversity change. Colonisations, extinctions and shifts in abundances can lead to ahomogenisation or heterogenisation of communities. By using eLTER vegetation time series coveringthe period from 1995 to 2018 we investigated the relative importance of these processes by applyingtwo different approaches. First, we partitioned temporal changes in spatial β‐diversity intocolonisation and extinction events and explored to what extent both processes have contributed tothe homogenization or heterogenisation of local plant communities. Second, we analysed temporalβ‐diversity to identify sites that have extraordinarily changed.Spatial differentiation among plant communities increased over time. This change was influencedmore by extinctions than by colonisations. Extinctions resulting in a heterogenisation of plantcommunities is an indication of a stronger reduction of widespread species as compared to rarespecies. The analysis of temporal β‐diversity likewise showed that extinctions had a more pronouncedeffect on community composition than colonisations. Further analysis indicated that species lossesand gains over time may be related to changing precipitation patterns at eLTER sites.The case study showed that eLTER biodiversity data are principally well suited to answer questionsconcerning biodiversity change at the continental scale. However, the study also points at limitationsresulting from restricted spatial representativity, low sampling frequencies and various types ofheterogeneity in the data. Recommendations are made to increase representativeness and to specifyexisting eLTER Standard Observations. Further considerations concern the development of IT services,with a focus on the documentation of metadata, data acquisition, quality control, harmonisation ofvariables and networking with other initiatives.
A uniqueness result for a simple superlinear eigenvalue problem
Creators: name: Herrmann, Michael
name: Matthies, Karsten
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We study the eigenvalue problem for a superlinear convolution operator in the special case of bilinear constitutive laws and establish the existence and uniqueness of a one-parameter family of nonlinear eigenfunctions under a topological shape constraint. Our proof uses a nonlinear change of scalar parameters and applies Krein-Rutmann arguments to a linear substitute problem. We also present numerical simulations and discuss the asymptotics of two limiting cases.
description: revised version with enhanced introduction; 21 pages, several figures