Miracle-dz/UniFAR-FTUs huggingface dataset:
Comparison of the torque & slip curves for a standard squirrel cage motor with those of a motor with a novel winding arrangement

This paper complements others by the same authors [1], [2], where the general concepts, design calculations and constructional differences of an induction motor with a novel winding arrangement were presented, together with a magnetic analysis. In the present paper, the equivalent circuit for the space harmonics of the mmf is described and the slips and equivalent circuit parameters for each space harmonic are calculated, together with the current, power and torque for both the standard squirrel cage motor and the motor with the same rotor but a novel stator winding. The negative effects of the space harmonics are calculated and presented graphically for both motors. Torque and slip curves are obtained for 6000 points in a speed range between 3000 min-1 and -3000 min-1. It is shown that the negative effects of certain space harmonics are eliminated by the constructional changes. A comparison between the torque-slip characteristics of the two motors is presented, and the improvement in the overall torque characteristic shows the benefits resulting from the adoption of an innovative approach to the winding.
Polarization Multiplexing With the Kramers-Kronig Receiver

We present two schemes extending the Kramers-Kronig-receiver to polarization multiplexed transmission. One of the schemes relies on the Stokes receiver and allows for complex-valued polarization multiplexed transmission without using a local oscillator, and active polarization control at the receiver. It uses three photodiodes and requires three analog-to-digital converters (ADCs). The other scheme uses a local oscillator, and its implementation is suitable in all cases where the transmitter and the receiver operate at the same wavelength, so that the local oscillator signal can be extracted from the transmit laser. It uses only two photodiodes and two ADCs, and does not require optical hybrids. The performance of the first (Stokes-based) scheme is studied numerically, whereas that of the second scheme is studied both numerically and experimentally.
A thermally-invariant, additively manufactured, high-power graphene resistor for flexible electronics

Solution processed two-dimensional (2D) layered materials and their integration with additive manufacturing techniques, such as ink-jet printing, is a facile approach for incorporating these exotic materials into device platforms for flexible electronics. In this work, graphene ink formulations are successfully utilized toward the design and fabrication of high-power resistive structures that are printed on both rigid and flexible substrates and have the potential to deliver close to 10 W of power. A near-flat, negative temperature coefficient of resistivity (TCR) is measured with an activation energy Ea ~ 2.4 meV for electron hopping, which is 100× lower compared to Ea values for high TCR materials. The TCR and Ea values are amongst the lowest reported for 2D layered material systems. The thermal-invariance of resistivity for such high-power graphene printed resistors is attractive for applications, for example to provide a stable heating source for flexible electronics over extreme thermal environments. The transport characteristics of the ink-jet printed features is modeled as a composite structure in order to explain the thermal response which appears to be mediated via defects in the sonicated graphite, and correlates well to inferences made from Raman spectroscopy and transmission electron microscopy analysis conducted on the printed graphene structures. In order to fabricate such functional structures with ink-jet printing, the active nozzle number, printing passes, and annealing conditions are shown to play an important role to determine line resolution, and also dictate the morphological and electronic transport characteristics of the printed graphene features.
Coupling of DNA Helicase and Endonuclease Activities of Yeast Dna2 Facilitates Okazaki Fragment Processing*

Saccharomyces cerevisiae Dna2 possesses both helicase and endonuclease activities. Its endonuclease activity is essential and well suited to remove RNA-DNA primers of Okazaki fragments. In contrast, its helicase activity, although required for optimal growth, is not essential when the rate of cell growth is reduced. These findings suggest that DNA unwinding activity of Dna2 plays an auxiliary role in Okazaki fragment processing. To address this issue, we examined whether the Dna2 helicase activity influenced its intrinsic endonuclease activity using two mutant proteins, Dna2D657A and Dna2K1080E, which contain only helicase or endonuclease activity, respectively. Experiments performed with a mixture of Dna2D657A and Dna2K1080E enzymes revealed that cleavage of a single-stranded DNA by endonuclease activity of Dna2 occurs while the enzyme translocates along the substrate. In addition, DNA unwinding activity efficiently removed the secondary structure formed in the flap structure, which was further aided by replication protein A. Our results suggest that the Dna2 unwinding activity plays a role in facilitating the removal of the flap DNA by its intrinsic endonuclease activity.
rrested pneumatization : Witness of paranasal sinuses development ?

Objectives: Recent radiological studies have demonstrated that formation of the sphenoid sinus is preceded by a phase of fatty transformation of the bone marrow, and then by a phase of fat involution prior to the appearance of an aerated cavity and that this process can sometimes be interrupted, resulting in the persistence of images of arrested pneumatisation. The objective of the study was to confirm the existence of arrested pneumatisation in the sphenoid bone, and to investigate the presence of similar images in the maxilla, frontal and ethmoid bones. Material and methods: In this single-centre, retrospective study, 207 CT scans with no signs of mucosal opacity or sinus retention performed for assessment of septorhinoplasty or chronic nasal dysfunction were reviewed according to Welker’s criteria to detect images of arrested pneumatisation. Results: Twenty-two patients presented 30 images suggestive of arrested pneumatisation of the maxilla (13/30), sphenoid (10/30) and frontal (7/30) bones. No images of arrested pneumatisation were observed in the ethmoid bone. Conclusions: The results of this study question the classical mechanisms of formation of the paranasal sinuses. According to the hypothesis of postnatal bone cavitation resulting from bone marrow involution and centripetal gas production, paranasal sinuses would constitute distinct organs that develop independently of the ethmoidal olfactory organ, which is formed from the embryonic cartilaginous olfactory capsule.
Analysis of the combined effects of resveratrol and radiation on lung cancer cells

Mucoepidermoid lung carcinoma is frequently manifested by obstructive trachea symptoms. It is necessary to develop effective curative or palliative therapeutic strategies for treating mucoepidermoid lung carcinoma through administration of compounds that improve ionizing radiation treatment, thereby increasing the effects of the treatment on tumor cells while minimizing the effects on normal tissues surrounding the tumor cells. Resveratrol is a polyphenolic phytoalexin present in wines and several plants and has a broad spectrum of biological activities, including antioxidant and anticarcinogenic effects. The biological effects of ionizing radiation plus resveratrol have been examined in different types of cell in many studies. Here, we aimed to verify the effects of resveratrol on mucoepidermoid lung carcinoma cells NCI-H292 exposed to ionizing radiation. In vitro studies in NCI-H292 cell culture using neutral red uptake assays showed that the cytotoxicity index (IC50) of resveratrol was 401. 5μM, and the lethal dose 50 % (LD50) of ionizing radiation in the absence of resveratrol was 693 Gy. In vitro micronucleus assays were then performed to verify the genotoxic effects of resveratrol, and fluorescence assays were performed to evaluate the effects of resveratrol on the cell cycle, repair and injury processes, cellular necrosis, and apoptosis. The results demonstrated that 30μM resveratrol promote injury on NCI-H292 cells after 24 h of irradiation. Therefore, this study provides results able to support in vitro future investigations about radiosensitive potential of resveratrol in lung cancer cells. There is a need to investigate compounds with potential to improve the local control of lung cancer promoted by radiation therapy. This way avoiding injuries to healthy cells.
Dialogue concerning the Two Chief World Systems

Several years ago there was published in Rome a salutary edict which, in order to obviaie the dangerous tendencies of our present age, imposed a seasonable silence upon the Pythagorean opinion that the earth moves There were those who impudently asserted that this decree had its origin not injudicious inquire, but in passion none too well informed Complaints were to be heard that advisers who were totally unskilled at astronomical observations ought not to clip the wings of reflective intellects by means of rash prohibitions.
Aerosol–cloud interactions in mixed-phase convective clouds – Part 1: Aerosol perturbations

Abstract. Changes induced by perturbed aerosol conditions in moderately deep mixed-phase convective clouds (cloud top height ∼ 5 km) developing along sea-breeze convergence lines are investigated with high-resolution numerical model simulations. The simulations utilise the newly developed Cloud–AeroSol Interacting Microphysics (CASIM) module for the Unified Model (UM), which allows for the representation of the two-way interaction between cloud and aerosol fields. Simulations are evaluated against observations collected during the COnvective Precipitation Experiment (COPE) field campaign over the southwestern peninsula of the UK in 2013. The simulations compare favourably with observed thermodynamic profiles, cloud base cloud droplet number concentrations (CDNC), cloud depth, and radar reflectivity statistics. Including the modification of aerosol fields by cloud microphysical processes improves the correspondence with observed CDNC values and spatial variability, but reduces the agreement with observations for average cloud size and cloud top height. Accumulated precipitation is suppressed for higher-aerosol conditions before clouds become organised along the sea-breeze convergence lines. Changes in precipitation are smaller in simulations with aerosol processing. The precipitation suppression is due to less efficient precipitation production by warm-phase microphysics, consistent with parcel model predictions. In contrast, after convective cells organise along the sea-breeze convergence zone, accumulated precipitation increases with aerosol concentrations. Condensate production increases with the aerosol concentrations due to higher vertical velocities in the convective cores and higher cloud top heights. However, for the highest-aerosol scenarios, no further increase in the condensate production occurs, as clouds grow into an upper-level stable layer. In these cases, the reduced precipitation efficiency ( PE ) dominates the precipitation response and no further precipitation enhancement occurs. Previous studies of deep convective clouds have related larger vertical velocities under high-aerosol conditions to enhanced latent heating from freezing. In the presented simulations changes in latent heating above the 0∘C are negligible, but latent heating from condensation increases with aerosol concentrations. It is hypothesised that this increase is related to changes in the cloud field structure reducing the mixing of environmental air into the convective core. The precipitation response of the deeper mixed-phase clouds along well-established convergence lines can be the opposite of predictions from parcel models. This occurs when clouds interact with a pre-existing thermodynamic environment and cloud field structural changes occur that are not captured by simple parcel model approaches.
Understanding the relationshipbetween founder – CEOsand fi rmperformance ☆

Article history: Received 8 August 2007 Received in revised form 22 May 2008 Accepted 22 May 2008 Available online 10 July 2008 We use instrumental variables methods to disentangle the effect of founder–CEOs on performance from the effect of performance on founder–CEO status. Our instruments for founder–CEO status are the proportion of the firm's founders that are dead and the number of people who founded the company. We find strong evidence that founder–CEO status is endogenous in performance regressions and that good performance makes it less likely that the founder retains the CEO title. After factoring out the effect of performance on founder–CEO status, we identify a positive causal effect of founder–CEOs on firm performance that is quantitatively larger than the effect estimated through standard OLS regressions. We also find that founder–CEOs are more likely to relinquish the CEO post after periods of either unusually low or unusually high operating performances. All in all, the results in this paper are consistent with a largely positive view of founder control in large US corporations. © 2008 Elsevier B.V. All rights reserved. JEL classification: G34
Diagnostic Value of Interferon-γ in Tuberculous Pleurisy: A Metaanalysis

Background Conventional tests are not always helpful in making a diagnosis of tuberculous pleurisy. Many studies have investigated the usefulness of interferon (IFN)-γ measurements in pleural fluid for the early diagnosis of tuberculous pleurisy. We conducted a metaanalysis to determine the accuracy of IFN-γ measurements in the diagnosis of tuberculous pleurisy. Methods After a systematic review of English-language studies, sensitivity, specificity, and other measures of accuracy of IFN-γ concentrations in the diagnosis of pleural effusion were pooled using random-effects models. Summary receiver operating characteristic curves were used to summarize overall test performance. Results Twenty-two studies met our inclusion criteria. The summary estimates for IFN-γ in the diagnosis of tuberculous pleurisy in the studies included were as follows: sensitivity, 0.89 (95% confidence interval [CI], 0.87 to 0.91); specificity, 0.97 (95% CI, 0.96 to 0.98); positive likelihood ratio, 23.45 (95% CI, 17.31 to 31.78); negative likelihood ratio, 0.11 (95% CI, 0.07 to 0.16); and diagnostic odds ratio, 272.7 (95% CI, 147.5 to 504.2). Conclusions IFN-γ determination is a sensitive and specific test for the diagnosis of tuberculous pleurisy. The measurement of IFN-γ levels in pleural effusions is thus likely to be a useful tool for diagnosing tuberculous pleurisy. The results of IFN-γ assays should be interpreted in parallel with clinical findings and the results of conventional tests.
Lessons from the Kibbutz on the Equality-Incentives Trade-Off

The first kibbutz was established southwest of the Sea of Galilee in 1910, but the vast majority of kibbutzim were established in the 1930s and 1940s, shortly before the creation of the state of Israel in 1948. Founders aimed to create a "new human being" who cared about the group more than about himself, a homo sociologicus who would challenge the selfish homo economicus. This idealistic view can explain many of the key features of kibbutzim: equal sharing in the distribution of income; no private property; a noncash economy; communal dining halls where members ate their meals together; high provision of local public goods for use by kibbutz members; separate communal residences for children outside their parents homes, which were supposed to free women from their traditional role in society and allow them to be treated equally with men; collective education to instill socialist and Zionist values; communal production, whereby kibbutz members worked inside their kibbutzim in agriculture or in one of the kibbutz plants; and no use of hired labor from outside kibbutzim—because hiring labor was considered "exploitation" under the reigning socialist ideology. To an economist, steeped in thinking about incentives that self-interested individuals face, there are three reasons why an equal-sharing arrangement of this sort seems unlikely to last. First, high-ability members have an incentive to exit equal-sharing arrangements to earn a wage premium—so-called "brain drain. " Second, low-ability individuals have an incentive to enter equal-sharing arrangements so that they can be subsidized by more-able individuals—so-called adverse selection. Third, in context of equal sharing, shirking and free-riding are likely to be prevalent. However, kibbutzim have survived successfully for the past century and currently consist of 120,000 members living in 268 kibbutzim. In a number of ways, the kibbutzim offer an exceptional environment to examine the potential trade-off between equality and incentives.
The Effect of Teacher Content Knowledge on Student Achievement: a quantitative case analysis of six brazilian states

This study investigates the effect of teacher content knowledge, as measured by test performance, on the math achievement of fourth grade students in Brazil. Using longitudinal data from six Brazilian states that participated in the FUNDESCOLA program in 1999, we conduct the analysis using a value-added model that controls for student and teacher characteristics, class composition, and school fixed effects. Our evidence suggests that teachers with higher content knowledge have a greater impact on the math test scores of their students, an effect that is even larger at the school-level. Our results indicate the need for further research into this subject. They also suggest that the allocation of resources toward the improvement of teacher content knowledge, through approaches such as targeted professional development and more rigorous certification requirements, may be an important aspect of increasing student achievement. Keywords: Educational Economics; Input Output Analysis; Teacher Effectiveness
Novel Mechanisms and Role of Glomerular Podocytes Susceptibility of podocytes to palmitic acid is regulated by fatty acid oxidation and inversely depends on acetyl-CoA carboxylases 1 and 2

Kapil Kampe, Jonas Sieber, Jana Marina Orellana, Peter Mundel, and Andreas Werner Jehle Molecular Nephrology, Department of Biomedicine, University Hospital, Basel, Switzerland; Harvard Medical School and Division of Nephrology, Massachusetts General Hospital, Boston, Massachusetts; and Department of Internal Medicine, Transplantation, Immunology, and Nephrology, University Hospital, Basel, Switzerland
STUDY OF FACTORS INFLUENCING MOBILE TICKETING ADOPTION: STATUS QUO BIAS PERSPECTIVE

The purpose of this study is to employ the status quo bias theory to determine the key factors behind the adoption of mobile ticketing by mobile users. Using a survey of 241 mobile ticketing users, structural equation modelling is applied to analyze the validity and reliability of the results. We find that perceived value, self-efficacy, and system support are the most important predictors of switching to mobile ticketing, with perceived value the dominant effect. Hence, it is important to emphasize the benefits of mobile ticketing to increase the perceived value to potential users. Furthermore, a seamless mobile ticketing system with a user-friendly interface and simple processes is necessary to enhance user confidence and alleviate switching barriers. Finally, the theoretical and practical implications of this study are discussed.
Plasma 8-hydroxy-2 ′-deoxyguanosine Levels in Huntington Disease and Healthy Controls Treated with Coenzyme Q 10

We analyzed plasma 8OHdG concentrations in 20 individuals enrolled in the Pre-2CARE study before and after treatment with CoQ. Treatment resulted in a mean reduction in 8OHdG of 2.9 ± 2.9 pg/ml for the cohort (p = 0.0003) and 3.0 ± 2.6 pg/ml, for the HD group (p = 0.002). Baseline 8OHdG levels were not different between individuals with HD and controls (19.3 ± 3.2 pg/ml vs. 19.5 ± 4.7 pg/ml, p = 0.87) though baseline CoQ levels were elevated in HD compared with controls (p < 0.001). CoQ treatment reduces plasma 8OHdG and this reduction may serve as a marker of pharmacologic activity
Determinants of a Foreclosure Discount September 2017

Using a dataset with individual appraisals of foreclosed apartments sold through auction in Stockholm, Sweden, the issue of selection bias and a potential overestimation of a foreclosure related discount on price is addressed. A mean discount of 7.9% with a corresponding median value of 9.5% is shown. A hedonic model is also applied. It is found that about half of the impact on price caused by a forced sale is attributable to the search process on the real estate market. These results contrasts from earlier research having explained a negative impact on price to seller motivational factors. These results provide insight towards the dynamics of a negative impact on price caused by a forced sale, and has the potential to allow stakeholders to model a potential discount in greater detail for individual foreclosed properties, and contribute to management of credit risk. JEL-classifications: D80; D82; R30; R31 1 Division of Building and Real Estate Economics / Center for Banking and Finance Department of Real Estate and Construction Management KTH Royal Institute of Technology, Stockholm, Sweden Drottning Kristinas Väg 30, 100 44, Stockholm, Sweden herman.donner@abe.kth. se
RESEARCH OUTPUTS / RÉSULTATS DE RECHERCHE

While mobile devices have experienced important accessibility advances in the past years, people with visual impairments still face important barriers, especially in specific contexts when both their hands are not free to hold the mobile device, like when walking outside. By resorting to a multimodal combination of body based gestures and voice, we aim to achieve full hands and vision free interaction with mobile devices. In this article, we describe this vision and present the design of a prototype, inspired by that vision, of a text messaging application. The article also presents a user study where the suitability of the proposed approach was assessed, and a performance comparison between our prototype and existing SMS applications was conducted. Study participants received positively the prototype, which also supported better performance in tasks that involved text editing
Number : WUCSE-2004-43 2004-07-18 Discovering Transcriptional Regulatory Rules from Gene Expression and TF-DNA Binding Data by Decision Tree Learning

Background: One of the most promising but challenging task in the post-genomic era is to reconstruct the transcriptional regulatory networks. The goal is to reveal, for each gene that responds to a certain biological event, which transcription factors affect its transcription, and how several transcription factors coordinate to accomplish specific regulations. Results: Here we propose a supervised machine learning approach to address these questions. We build decision trees to associate the expression level of a gene with the transcription factor binding data of its promoter. From the decision trees, we extract regulatory rules that specify how the binding of a combination of several transcription factors affects the expression of a gene. Such rules are easy to interpret, and represent experimentally testable hypotheses. We use a decision tree ensemble approach to increase modeling accuracy and robustness. We also propose a novel method to integrate rules learned from several time series that measure the same biological processes. We apply our method to publicly available cell cycle expression data and transcription factor binding data for the budding yeast. Cross-validation experiments show that our method is highly accurate and reliable. The method correctly identifies all major known yeast cell cycle transcription factors, and assigns them into appropriate cell