Miracle-dz/UniFAR-FTUs huggingface dataset:
On Iwahori-Hecke algebras for p-adic loop groups: double coset basis and Bruhat order

Abstract: We study the $p$-adic loop group Iwahori-Hecke algebra ${\cal H}(G^+,I)$ constructed by Braverman, Kazhdan, and Patnaik and give positive answers to two of their conjectures. First, we algebraically develop the “double coset basis” of ${\cal H}(G^+,I)$ given by indicator functions of double cosets. We prove a generalization of the Iwahori-Matsumoto formula, and as a consequence, we prove that the structure coefficients of the double coset basis are polynomials in the order of the residue field. The basis is naturally indexed by a semi-group $\cal{W}_{\cal{T}}$ on which Braverman, Kazhdan, and Patnaik define a preorder. Their preorder is a natural generalization of the Bruhat order on affine Weyl groups, and they conjecture that the preorder is a partial order. We define another order on $\cal{W}_{\cal{T}}$ which carries a length function and is manifestly a partial order. We prove the two definitions coincide, which implies a positive answer to their conjecture. Interestingly, the length function seems to naturally take values in ${\Bbb Z}\oplus{\Bbb Z}\varepsilon$ where $\varepsilon$ is “infinitesimally” small.
Backward error analysis for multistep methods

In recent years, much insight into the numerical solution of ordinary differential equations by one-step methods has been obtained with a backward error analysis. It allows one to explain interesting phenomena such as the almost conservation of energy, the linear error growth in Hamiltonian systems, and the existence of periodic solutions and invariant tori. In the present article, the formal backward error analysis as well as rigorous, exponentially small error estimates are extended to multistep methods. A further extension to partitioned multistep methods is outlined, and numerical illustrations of the theoretical results are presented.
Strengthening Local Credit Markets Through Lender‐Level Index Insurance

This paper considers lender-level index insurance as a means of expanding access to credit in disaster-prone communities. In this approach, the lender transfers the disaster risk of loans in its portfolio by contracting on an observable measure of the catastrophe. I develop and calibrate a dynamic, stochastic model using data from a community lender in Peru that is vulnerable to El Niño-related flooding. The modeled lender can insure against El Niño using an indexbased product that is available for purchase by financial intermediaries in Peru. I examine how premium rates, basis risk, and background risk may influence the lender’s insurance decision and credit supply. Overall, the results suggest that lender-level index insurance holds promise for reducing disaster-related credit supply shocks and expanding credit access in vulnerable communities. ∗Acknowledgments: This research is the result of collaboration with excellent professionals at Banco de Crédito del Perú, BBVA Banco Continental, Edyficar, Caja Nuestra Gente, Caja Piura, Caja Paita, Caja Sullana, Caja Trujillo, La Positiva Seguros, Pacifico Seguros, Rimac Seguros, Willis Peru, and the banking regulator in Peru, Superintendencia de Banca, Seguros, y AFP. I want to especially thank Caja Trujillo for its guidance, including feedback on this manuscript. I thank Jerry Skees and Mario Miranda for their mentoring, conceptual contributions, and early reviews of this paper. Thanks also to Volodymyr Babich, Grant Cavanaugh, Jason Hartell, Thorsten Moenig, Ruben Lobel, Richard Peter, Marc Ragin, Paul Shea, and George Zanjani for their help and insightful comments.
The Ecology of Human-Machine Systems II: Mediating 'Direct Perception' in Complex Work Domains

Recently, a new class of artifacts has appeared in our environment: complex, high-technology work domains. An important characteristic of such systems is that their goal-relevant properties cannot be directly observed by the unaided eye. As a result, interface design is a ubiquitous problem in the design of these work environments. Nevertheless, the problem is one that has yet to be addressed in an adequate manner. An analogy to human perceptual mechanisms suggests that a smart instrument approach to interface design is needed to supplant the rote instrument (single-sensor-single-indicator) approach that has dominated to this point. Ecological interface design (ED) is a theoretical framework in the smart instrument vein that postulates a set of general, prescriptive principles for design. The goal of E D is twofold: first, to reveal the affordances of the work domain through the interface in such a way as to take advantage of the powerful capabilities of perception and action; and second, to provide the a.
Stationary crack tip fields in elastic–plastic solids: an overview of recent numerical simulations

In this paper, an overview of some recent numerical simulations of stationary crack tip fields in elastic–plastic solids is presented. First, asymptotic analyses carried out within the framework of 2D plane strain or plane stress conditions in both pressure insensitive and pressure sensitive plastic solids are reviewed. This is followed by discussion of salient results obtained from recent computational studies. These pertain to 3D characteristics of elastic–plastic near-front fields under mixed mode loading, mechanics of fracture and simulation of near-tip shear banding process of amorphous alloys and influence of crack tip constraint on the structure of near-tip fields in ductile single crystals. These results serve to illustrate several important features associated with stress and strain distributions near the crack tip and provide the foundation for understanding the operative failure mechanisms. The paper concludes by highlighting some of the future prospects for this field of study.
Telework: A new mode of gendered segmentation? Results from a Study in Canada

Abstract: Telework is seen as a way to reduce traffic congestion and urban pollution, as a new mode of work organization, and oftentimes as a way of balancing work and family. Our research not only provides a picture of teleworkers in Canada, but also goes beyond the non-gendered percentages which are more frequent in the analyses. This reveals an interesting fact, which we call a gendered segmentation of telework or telecommuting. In this paper, we stress the gendered differences in the type of work done, differentiations in tasks, in the autonomy of the decision to telecommute, as well as differentiations in work organization. We show that work organization and tasks are differentiated according to gender and we will see that while the practice of telework is gendered in types of task and time spent at home, the motives for telework, advantages and disadvantages, are similar for men and women. Resume : Le teletravail est vu comme un nouveau mode d'organisation du travail, et parfois aussi comme une facon de mieux concilier l'emploi et la famille. Notre article presente une analyse differenciee selon le sexe du teletravail au Canada, et met en relief ce que nous avons appele une segmentation differenciee selon le sexe du teletravail. Nous soulignons les differences relatives au type de travail effectue, aux tâches, a l'autonomie dans la prise de decision de faire du teletravail, autant d'elements differencies selon le sexe. Nous exposons aussi les avantages et inconvenients que voient les hommes et les femmes dans le fait de faire du teletravail et constatons que contrairement a ce qu'indiquaient certains auteurs, les avantages du teletravail sont relativement les memes chez les deux groupes.
Reduction of Aggression Among Domestic Hens (Gallus Domesticus) in the Presence of a Dominant Third Party

Experiments by earlier authors were repeated and extended to examine, in white leghorn chicken (Gallus domesticus), the underlying mechanisms of the reduction of aggressive behaviour between two subordinate hens in the presence of a third, dominant group member (cock or alpha hen). Analysis of accompanying changes in feeding time showed that the inhibition caused by the cock's presence is aggression-specific (though its nature is still unknown), while the alpha hen, as an aggressive competitor, restricts the subordinates' access to food so that they lack the resource they would defend. The evidence suggests that, with the cock as well as the dominant hen, the low rate of aggression in subordinates is not due to a lack of time for attacks but rather to a lack of aggressive motivation.
Modelling Visual Properties and Visual Context in Multimodal Semantics

Multimodal semantic models that extend linguistic representations with additional perceptual input have proved successful in a range of natural language processing (NLP) tasks. However, existing research has extracted visual features from complete images, and has not examined how different kinds of visual information impact performance. We construct multimodal models that differentiate between internal visual properties of the objects and their external visual context. We evaluate the models on the task of decoding brain activity associated with the meanings of nouns, demonstrating their advantage over those based on complete images.
Aneuploidy impairs protein folding and genome integrity in human cells

Aneuploidy or imbalanced chromosome content is the cause of pathological conditions such as Down's syndrome and is also a hallmark of cancer where it is linked with malignancy and poor prognosis. A growing body of evidence has demonstrated that aneuploidy exerts a large number of effects at the cellular level. These effects include an impairment of proliferation, distinct changes to the transcriptome and proteome, as well as a disturbance of cellular proteostasis. However, the molecular mechanisms underlying the impairment of proteostasis and the changes in gene expression are not well understood. Further, the consequences of the altered gene expression in aneuploid cells also remain incompletely characterised. The work described herein was performed to gain insights into the consequences of aneuploidy in human cells. We have found that human aneuploid cells are impaired in HSP90-mediated protein folding. Further, we demonstrate that aneuploidy hampers induction of the heat shock response suggesting that the activity of the transcription factor HSF1 is compromised in human aneuploid cells. Increasing the levels of HSF1, either by endogenous or exogenous means, counteracts the effects of aneuploidy on HSP90 function, indicating that the defective HSP90 function of aneuploid cells is due to insufficient HSF1 capacity. We also demonstrate that the deficient protein folding capacity is at least partly responsible for the complex changes in gene expression observed in aneuploid cells. One of the most striking characteristics of the gene expression changes elicited by aneuploidy is the consistent downregulation of factors related to DNA transactions. Thus, the second study described here was undertaken to determine the effects of aneuploidy on DNA replication and genome stability. Our analysis showed that DNA replication is indeed impaired in human aneuploid cells, leading to higher levels of anaphase bridges, ultrafine bridges, chromosome breaks, as well as ultimately, complex chromosomal rearrangements. These defects were shown to stem from lower expression of the MCM2-7 helicase and could be rescued by MCM2-7 overexpression. The results described here provide mechanistic insight into the causes of the disturbed proteostasis in aneuploids as well as revealing the consequences of impaired protein folding capacity for aneuploid cells. Further, they demonstrate that aneuploidy is by itself capable of destabilising the genome and delineate a molecular mechanism by which this can occur. Taken together, the gleaned insights may have important implications for the role of aneuploidy in pathological conditions.
An Action Research on Flipped Learning for Fundamental Nursing Practice Courses

Purpose: This study was conducted to design and implement a fundamental nursing practice based on flipped learning and to examine the effects. Methods: Participants were 57 students who were taking the fundamental nursing practice course at D university in N city. The study included processes of instructional design, action/effects and reflection. Data were analyzed using paired t-test with the SPSS/WIN 23.0. Results: In the instructional design stage, the class consisted of 3 parts: outside class (pre-learning), inside class (assessment, collaborative practice, peer review, reflection), after-class (self-directed practice, feedback). In the action/effects stage, the flipped learning was applied for 15 weeks according to the instructional design and then the effects of flipped learning were evaluated. Students showed a significant improvement in self-directed learning ability (t=-3.56, p=.001) and critical thinking disposition after the class (t=-3.72, p<.001). Finally, in the reflection stage, the researchers examined whether the four pillars of flipped learning occurred. Conclusion: Findings indicate that flipped learning applied in fundamental nursing practice is effective in improving self-directed learning ability and critical thinking disposition. The action research method was a useful way to foster professor’s educational competency as well as to verify effects of a new nursing education method.
Paralithodes camtschaticus ( Tilesius , 1815 ) ( Decapoda , Anomura )

Ovicides paralithodis sp. n. is described from the egg mass of the red king crab Paralithodes camtschaticus (Tilesius, 1815) from the Sea of Okhotsk, off Hokkaido, Japan, and Alaska, USA. Among four congeners, O. paralithodis can be distinguished from O. julieae Shields, 2001 and O. davidi Shields and Segonzac, 2007 by having no eyes; from O. jonesi Shields and Segonzac, 2007 by the presence of basophilic, vacuolated glandular lobes in the precerebral region; and from O. jasoni Shields and Segonzac, 2007 by the arrangement of the acidophilic submuscular glands, which are not arranged in a row. Ovicides paralithodis represents the third described species of egg-predatory nemertean from P. camtschaticus, the second described carcinonemertid species from Japan, and the 21st described species in the family. The intensity of infestations may exceed 24,000 worms per a single egg-bearing pleopod of P. camtschaticus. A preliminary molecular phylogenetic analysis based on sequences of 28S rRNA and cytochrome c oxidase subunit I genes among selected monostiliferous hoplonemertean species supported the monophyly of Carcinonemertidae, suggesting that within the lineage of the family, evolution of the unique vas deferens, Takakura’s duct, preceded loss of accessory stylets and accessory-stylet pouches.
Synthesis and Fluorescence Properties of a Structurally Characterized Hetero-Hexanuclear Zn(II)-La(III) Salamo-Like Coordination Compound Containing Auxiliary Ligands

A hetero-hexanuclear Zn(II)-La(III) coordination compound, [{(ZnL)2La}2(bdc)2](NO3)2 (H2bdc = terephthalic acid) has been synthesized with a symmetric Salamo-like bisoxime, and characterized by elemental analyses, IR, UV-Vis, fluorescent spectroscopy, and single-crystal X-ray diffraction analysis. All of the Zn(II) ions are pentacoordinated by N2O2 donator atoms from the (L)2− unit and one oxygen atom from one terephthalate anion. The Zn(II) ions adopt trigonal bipyramidal geometries (τZn1 = 0.61, τZn2 = 0.56). The La(III) ions are decacoordinated in the Zn(II)-La(III) coordination compound and has a distorted bicapped square antiprism geometry. Meanwhile, the photophysical property of the Zn(II)-La(III) coordination compound was also measured and discussed.
Orthopaedic trauma injuries in paralympic athletes

In the last few years, the development of national and international games for the physically challenged has encouraged greater participation of athletes with physical disabilities. This resulted in an increase in intensity and frequency of the training routines and competitions and higher levels of trauma-orthopedic lesions. The aim of this descriptive-comparative study is to analyze statistically the incidence of trauma-orthopedic lesions of 82 physically challenged athletes selected in a non intentional and no probalistic way. These athletes belong to various sports categories, as follows: swimming = 37, table tennis = 19, athletics = 19, power lifting = 7. Sixty are males, 24, females, they range in age from 15 to 51 and they all took part in the 2002 World Championship. Applying the medical records of the Brazilian Paraolimpic Committee medical department filled in at those events (the technique of observing the athlete clinical-sports files and medical examinations), the result showed a recurrence of lesions in athletes in the following sports: athletics (MMII = 64.9%, backbone 19.3% and MMSS = 15.8%; power lifting (backbone = 54.5%, MMSS = 36.4% and MMII = 9.1%); swimming (MMSS = 44.4%, backbone = 38.9% and MMII = 16.7%) and table tennis (MMSS = 56%, Backbone = 36% and MMII = 8%). Such results lead to the conclusion that the performing of sports of the physically challenged athletes, and also the intensity of the training routing to try to beat their previous marks and results, cause these kinds of lesion. In addition, it is important to reinforce the preventive measures to the athletes.
EFFECTS ON GROWTH, PRODUCTIVITY AND BIOMASS QUALITY OF MISCANTHUS X GIGANTEUS OF SOILS CONTAMINATED WITH HEAVY METALS

The aim of this work was to study the effects of different heavy metals on growth, productivity and biomass quality of Miscanthus x giganteus. The plants were placed in pots, where of soils were contaminated, differently, with Cd, Cu, Ni, Pb, Zn, Hg and Cr. For each metal, two levels of contamination were tested. The results lead to the conclusion that in terms of the productivity and in what concerns the height of the plants, there were significant differences among the plants obtained in pots with the different heavy metals contamination. Cd, Cu and Hg were the metals that negatively affected, more significantly, the productivities obtained. In contrast, Miscanthus showed high tolerance to Ni, Pb, Zn and Cr soil contamination. There was a significant influence of those heavy metals contamination on the uptake and distribution of phosphorus in the Miscanthus biomass, but not on nitrogen content. Ash content was also influenced by soils heavy metals contamination. Overall, Miscanthus is able to remove and accumulate heavy metals from contaminated soils, but the highest proportion of those metals taken up by plants remain in the rhizome and roots.
The Piotroski F-Score: A fundamental value strategy revisited from an investor's perspective

This paper revisits the Piotroski F-score strategy in the U.S. stock universe from an investor's perspective. Primarily, we aim to answer the question, whether the high abnormal returns of more than 20 percent p.a. previously proclaimed by academics (Piotroski, 2000) and practitioners (AAII, 2015) can be feasibly captured by individual or professional investors. As such, our focal point is a pragmatic approach an average investor could opt for as well. We use the software Stock Investor Pro from the American Association of Individual Investors to obtain screenshots of the U.S. stock universe from 2005-2015 on a weekly basis. Next, we devise a long-only and a long-short variant of the Piotroski strategy with monthly or weekly rebalancing frequencies. At first glance, our findings re-confirm the high returns of this fundamental value strategy. Specifically, the monthly (weekly) long-only strategy generates raw returns of 30.93 (65.41) percent p.a. These returns outperform relevant benchmark indices and can only partially be explained by common systematic risk factors. However, consideration of liquidity constraints and an estimate of trading costs in this low liquidity stock universe render both strategies virtually unprofitable. Nevertheless, there may be potential for further research aiming at implementing such a strategy on more liquid investment universes.
Reduced-Graphene-Oxide with Dispersed Au-Ir Nanoparticles as Active Support for Pt at low Loadding for Electrocatalytic Oxygen Electroreduction

We report here on a novel and facile techniques for the synthesis nanocomposite based on stable bimetallic catalyst containing iridium and gold nanoparticles electrodeposited on chemically reduced graphene oxide (rGO) sheet admixed with platinum nanoparticles as an efficient electrocatalyst to facilitate the oxygen reduction reaction (ORR) in acidic medium. Raman spectroscopy, infrared spectroscopy (IR), scanning electron microscope (SEM), transmission electron microscope (TEM) methods were employed to characterize the rGO, Au-NPS-rGO, Ir-NPS-rGO, Au-Ir-rGO nanocomposites formed on the electrode surface. Here we present a comparative study into the relative effects of each hybrid nanocomposites: Au-NPS-rGO, Ir-NPS-rGO, Au-Ir-rGO nanocomposites on the performance of platinum nanoparticles towards the oxygen reduction reaction (ORR) in acidic media. For the purposes of comparing the supports, a simple platinum black catalyst is used and the performance isevaluated via direct measurement of peroxide by rotating ring-disk electrode (RRDE) to determine the number of electrons (n) transferred in the ORR. It was found that platinum nanoparticles dispersed within Au-Ir-rGO support follows a quasi 4-electron mechanism (3.99-4 electrons involved) due to that the ORR takes place mainly on the active Pt particles, and produced hydrogen peroxide is reduced at Au-Ir-rGO support.
Effectiveness of Wikis for Team Projects in Education

From its humble beginnings, wikis have evolved in both business organizations and educational institutions, catering to, among other uses, training and education. The current work examines wikis in the context of collaborative learning project teams and aims to address a visible gap in research. Much previous work is but prescriptive guidelines and self-reflections. While attempts exist in dealing with some assessments of wiki-related teams, these works chiefly use short-term teams and place their emphasis on merely outcomes. We advocate examination of mature teams as well as the interaction processes that happen while teams operate. The current study pays attention to four inputs highlighted as salient previously: learners’ prior wiki experience, instructor’s support, age and gender. It offers in-depth understanding of wiki effectiveness in collaborative learning environments, operationalized using project teams. A theoretical model is developed using the lens of the functional perspective, proposing wikis to positively affect learn-ing outcomes of academic achievement, self-reported learning, process satisfaction, positive social environment and a sense of community, through the processes of task-related and socio-emotional activities. The model posits that the inputs will enhance these activities. Tested using two separate wikis (Mediawiki and Confluence) over a protracted period of one semester, our findings show strong support for wiki effectiveness, contributing to research areas including wikis and small groups. With sound basis, the paper puts forth a framework for conceptualizing the notion of levels in segregating wiki systems, permitting derivation of implications for wiki de-velopment and instructional use.