nils-herrmann/clean_scirepeval huggingface dataset:
Mechanical properties of lightweight 316L stainless steel lattice structures fabricated by selective laser melting
Venue: Materials Design
Year: 2019

The performance of advanced and lightweight 316L stainless steel lattice structures fabricated by selective laser melting (SLM) was investigated using a range of laser energy densities (LED) A unique tetrakaidecahedron cell type was designed to construct a periodic lattice structure, which was compared with two common lattice structures of different unit cell topologies and deformation behaviors using mechanical property and quasi static energy absorption. It was found that tetrakaidecahedron structure deserved good compressive properties and energy absorption capabilities. The fabricated strut morphology and internal porosity were investigated using confocal and scanning electron microscopy to correlate with the compressive properties of the structure. The porosity was found to increase firstly and then fluctuate smoothly with increasing LED, similar to yield strength. The yield strength and compression modulus were not independent of porosity, indicating that further improvements can be achieved by SLM process optimization. Meanwhile, nonlinear finite element analysis was used to analyze their compressive response and fracture behavior. Our results highlighted that a high performing unit cell geometry can be used for energy absorption and lightweight manufacturing applications of lattice structures.
La struttura sociale delle citta italiane dal V al XII secolo
Year: 2014

La relazione, che insieme presentiamo, non puo e non vuole affrontare tutti i problemi che il tema suscita, relativamente alla citta italiana, problemi del resto ben noti per l'attenzione e l'interesse che tutta una tradizione storiografica tedesca ha loro rivolto. Ci proponiamo invece di offrire solo un primo, sommario quadro d'insieme, in cui sia no indicati i momenti fondamentali della evoluzione delle citta italiane nella loro strut tura sociale, sottolineando in special modo i dubbi, le perplessita e le questioni aperte, che gli Studiosi italiani vanno via via affrontando. Poniamo in tal modo le premesse per discussioni piu precise, che potranno esser argomento di studio in altre nostre eventuali riunioni, trattando di singole citta italiane, particolarmente significative dal punto di vista sociale. Uno studio specifico sulla composizione sociale della popolazione cittadina italiana nel corso del medioevo non esiste tuttavia valendosi di studi che hanno obiettivi alquanto diversi, ma che in qualche parte trattano l'argomento che ci interessa, si puo tentare di disegnarne un profilo) Questo tentativo presuppone pero una precisazione: che cosa si intendeva per c i t t a in Italia, nel medioevo? I centri, considerati c i t t a dai contemporanei e sono quelli stessi che, agli occhi dei posteri, hanno svolto un'azione storicamente rilevante sono tutti antiche urbes romane, che dopo essere State il centro del territorio, formando con esso una civitas organizzata in municipium, sono diventati sede episcopale, sede degli organi che am
Mindfulness, pijn en gezondheid
Year: 2017

Mindfulness heeft gunstige effecten op pijn en op de stressreactiviteit twee belangrijke factoren die vaak gelijktijdig bij patienten binnen de fysiotherapie aanwezig zijn. De pijnintensiteit kan door mindfulnesstraining minder worden, maar vooral het lijden onder de pijn en de impact van pijn op het functioneren van de patient neemt af. Deze gunstige effecten van mindfulnesstraining op pijn zijn meer dan alleen placebo. Het effect van mindfulness op pijn verloopt via diverse routes, waaronder het vrijkomen van endogene opioiden, ademhaling, bewegen en acceptatie. Chronische pijn tast het brein van de patient aan in regionen die betrokken zijn bij pijn en zelfregulatie. Mindfulnesstraining bevordert juist het functioneren van die regionen. Andere fysiotherapeutisch relevante effecten van mindfulnesstraining bij patienten zijn: minder kans op somberheid bij een chronische aandoening, beter gezondheidsgedrag, minder sterke ontstekingsrespons en beter omgaan met onbegrepen klachten.
Crystal structure of glycogen debranching enzyme and insights into its catalysis and disease causing mutations
Venue: Nature communications
Year: 2016

Glycogen is a branched glucose polymer and serves as an important energy store. Its debranching is a critical step in its mobilization. In animals and fungi, the 170 kDa glycogen debranching enzyme (GDE) catalyses this reaction. GDE deficiencies in humans are associated with severe diseases collectively termed glycogen storage disease type III (GSDIII) We report crystal structures of GDE and its complex with oligosaccharides, and structure guided mutagenesis and biochemical studies to assess the structural observations. These studies reveal that distinct domains in GDE catalyse sequential reactions in glycogen debranching, the mechanism of their catalysis and highly specific substrate recognition. The unique tertiary structure of GDE provides additional contacts to glycogen besides its active sites, and our biochemical experiments indicate that they mediate its recruitment to glycogen and regulate its activity. Combining the understanding of the GDE catalysis and functional characterizations of its disease causing mutations provides molecular insights into GSDIII.
Re engineering the post myocardial infarction medicines optimisation pathway: a retrospective analysis of a joint consultant pharmacist and cardiologist clinic model
Venue: Open Heart
Year: 2018

Inadequate medicines optimisation and adherence are significant problems among patients taking secondary prevention medications following myocardial infarction (MI) A novel joint consultant cardiology pharmacist and cardiologist medicines optimisation clinic was initiated for patients recently discharged following MI.  Patients completed a locally developed tool, the 'My Experience of Taking Medicines' questionnaire, designed to allow sharing of barriers to adherence with medications. They then attended a clinic with the consultant pharmacist or cardiologist (or both) Secondary prevention medicines needs and barriers to adherence were identified and discussed, and an action plan developed. The data provided are from a retrospective review of 270 post MI patients attending the service between October 2015 and December 2016.  Mean age was 67.3 years and 67.8% were male. The mean time from discharge to first outpatient clinic attendance was reduced by 56.1% (49.4 days vs 88 days before the service began) More than 95% of patient without planned non pharmacological intervention postdischarge did not need a cardiologist's input. Levels of medicines optimisation were improved substantially after attendance: patients receiving a recommended angiotensin converting enzyme inhibitor/angiotensin receptor blocker dose increased from 16.3% to 73.9% (p<0.001) patients receiving a recommended beta blocker dose increased from 6.2% to 46.1% (p<0.001) Patient concerns about their medications were significantly decreased (all p<0.001) Rates of non adherence fell by 42.6% 70.8% at 3 6 months post clinic. Readmission rates also declined after the service opened.  A medicines optimisation and patient adherence strategy based on a joint consultant cardiology pharmacist and cardiologist clinic can improve both adherence and outcomes post MI.
Gaming the Lecture Hall: Using Social Gamification to Enhance Student Motivation and Participation
Venue: The Challenges of the Digital Transformation in Education
Year: 2019

The traditional lecture is a teaching format that offers students few opportunities for interaction turning them into passive listeners of the lecturers' presentations what negatively impacts on their learning. With audience response systems, that is technology supporting classroom quizzes, breaks that re activate the students can be introduced into the lecturers' presentations. This article reports on an audience response system coupled with a social gamification of quizzes based on teams: Each student is assigned to a team and the students' answers to quizzes contribute to their teams' success. An immediate overview of responses to quiz questions and the team standings motivates students to participate in the quizzes. The contribution of this article is threefold: First, a team based social gamification of quizzes aimed at boosting participation in quizzes and attendance at lectures, second, original technological tools supporting the proposed team based social gamification, and third, an evaluation of the approach demonstrating its effectiveness.
Deep drawing of a stellar shape using finite element simulation and experimental
Venue: University of Thi Qar Journal for Engineering Sciences
Year: 2019

The process of deep drawing of complex shapes is a difficult process compared to the process of drawing simple shapes such as cylindrical, square and rectangle because of the complex shape is subjected to the higher stresses concentration compared to simple shapes. This work aims to study the effect of the wall corner radius of punch and radial clearance on deep drawing operation using the experimental work and numerical simulation. In this work, an analysis of the deep drawing process is performed for process design of stellar cup drawing. A deep drawing die was designed and manufacturing to perform the experimental procedure required to produce a stellar cup with inner dimensions (major axis equal to 43.7 mm and minor axis equal to 36.64 mm) formed from a circular flat sheet (80 mm diameter) comprised of low carbon steel of (0.08% carbon content, without any intermediate annealing. A commercially finite element program code (ANSYS 18.0) is utilized to simulate the stellar deep drawing operation. From the comparison between the results, it has been found that the thinning at cup corner increases by decreasing the wall corner radius of the punch and the maximum thinning with the wall corner radius of the punch equal to 16Rcp' 2 mm) at the corner of the minor axis of completely drawn cup
The Impact of the Wuhan Covid 19 Lockdown on Air Pollution and Health: A Machine Learning and Augmented Synthetic Control Approach
Venue: Environmental resource economics
Year: 2020

We quantify the impact of the Wuhan Covid 19 lockdown on concentrations of four air pollutants using a two step approach. First, we use machine learning to remove the confounding effects of weather conditions on pollution concentrations. Second, we use a new augmented synthetic control method (Ben Michael et al. in The augmented synthetic control method. University of California Berkeley, Mimeo, 2019. https:/arxiv.org/pdf/1811.04170.pdf) to estimate the impact of the lockdown on weather normalised pollution relative to a control group of cities that were not in lockdown. We find NO\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin} 69pt} \begin{document}$_{2}\end{document}2 concentrations fell by as much as 24 \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin} 69pt} \begin{document}\upmu$\end{document}mg/m\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin} 69pt} \begin{document}^3$\end{document}3 during the lockdown (a reduction of 63% from the pre lockdown level) while PM10 concentrations fell by a similar amount but for a shorter period. The lockdown had no discernible impact on concentrations of SO\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin} 69pt} \begin{document}$_{2}\end{document}2 or CO. We calculate that the reduction of NO\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin} 69pt} \begin{document}$_{2}\end{document}2 concentrations could have prevented as many as 496 deaths in Wuhan city, 3368 deaths in Hubei province and 10,822 deaths in China as a whole.
Compressive Wideband Spectrum Sensing and Carrier Frequency Estimation with Unknown Mimo Channels
Venue: ICASSP 2021 2021 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
Year: 2021

We consider the problem of joint wideband spectrum sensing and carrier frequency estimation in a sub Nyquist sampling framework. Specifically, a multi antenna receiver is used to estimate the carrier frequencies and power spectra of multiple narrowband transmissions that spread over a wide frequency band. Unlike existing works that assume the source signals impinge on the receiver via a line of sight (LOS) path, we consider a more practical multiple input multiple output (MIMO) channel characterized by multipath propagation. A new sub Nyquist sampling architecture is proposed, where each antenna output passes through two channels, namely, a direct path and a delayed path with a predetermined time delay. The signal at each channel is then sampled by a synchronized low rate analog to digital converter (ADC) We utilize the collected data samples to build a set of cross correlation matrices with different time lags and develop a CANDECOMP/PARAFAC (CP) decomposition based method to recover the carrier frequencies and power spectra of the source signals. Simulation results are presented to illustrate the effectiveness of the proposed method.
Davies' method for heat kernel estimates: An extension to the semi elliptic setting
Year: 2019

We consider a class of constant coefficient partial differential operators on a finite dimensional real vector space which exhibit a natural dilation invariance. Typically, these operators are anisotropic, allowing for different degrees in different directions. The heat kernels associated to these so called positive homogeneous operators are seen to arise naturally as the limits of convolution powers of complex valued measures, just as the classical heat kernel appears in the central limit theorem. Building on the functional analytic approach developed by E. B. Davies for higher order uniformly elliptic operators with measurable coefficients, we formulate a general theory for (anisotropic) self adjoint variable coefficient operators, each comparable to a positive homogeneous operator, and study their associated heat kernels. Specifically, under three abstract hypotheses, we show that the heat kernels satisfy off diagonal (Gaussian type) estimates involving the Legendre Fenchel transform of the operator's principle symbol. Our results extend those of E. B. Davies and G. Barbatis and partially extend results of A. F. M. ter Elst and D. Robinson.
Changing the balance of social care for older people: simulating scenarios under demographic ageing in New Zealand
Venue: Health social care in the community
Year: 2017

The demographic ageing of New Zealand society, as elsewhere in the developed world, has dramatically increased the proportion of older people (aged 65 years and over) in the population. This has major policy implications for the future organisation of social care. Our objective was to test the effects on social care use, first, of putative changes in the overall disability profile of older people, and second, of alterations to the balance of their care, i.e. whether it was community based or residential. In order to undertake these experiments, we developed a microsimulation model of the later life course using individual level data from two official national survey series on health and disability, respectively, to generate a synthetic version which replicated original data and parameter settings. A baseline projection under current settings from 2001 to 2021 showed moderate increases in disability and associated social care use. Artificially decreasing disability levels, below the baseline projection, only moderately reduced the use of community care (both informal and formal) Scenarios implemented by rebalancing towards informal care use moderately reduced formal care use. However, only moderate compensatory increases in community based care were required to markedly decrease the transition to residential care. The disability impact of demographic ageing may not have a major negative effect on system resources in developed countries like New Zealand. As well as healthy ageing, changing the balance of social care may alleviate the impact of increasing demand due to an expanding population of older people.
The influence of social cues in persuasive social robots on psychological reactance and compliance
Venue: Comput. Hum. Behav.
Year: 2018

People can react negatively to persuasive attempts experiencing reactance, which gives rise to negative feelings and thoughts and may reduce compliance. This research examines social responses towards persuasive social agents. We present a laboratory experiment which assessed reactance and compliance to persuasive attempts delivered by an artificial (non robotic) social agent, a social robot with minimal social cues (human like face with speech output and blinking eyes) and a social robot with enhanced social cues (human like face with head movement, facial expression, affective intonation of speech output) Our results suggest that a social robot presenting more social cues will cause higher reactance and this effect is stronger when the user feels involved in the task at hand.
Oedipus at Colonus as a Reflection of the Oresteia: The Abomination from Thebes as an Athenian Hero in the Making
Year: 2019

Sophocles bases his posthumous Oedipus at Colonus on the famous treatment of the transformation of the Furies to the Kindly Ones in Eumenides the last play of Aeschylus' Oresteia that has gained the status of a master play. Accordingly Sophocles shapes the plot and its main character on a cultic reality and on the ritual concept of chthonic heroes and gods. The Erinyes/Eumenides, to whose grove Oedipus arrives, function as the model for Sophocles' most questionable hero. Their quintessential polarity between the dreadful dimension of death and euphemistic names to veil it, between mythic scenarios of anger, curse, hate as well as cultic blessing and plenty is the basic pattern of a play that stages Oedipus as a chthonic hero in the making. He acts right from the beginning as the hero he is going to become. Sophocles makes Oedipus oscillate between staging a real mystic miracle and a problematic manipulation of religious facts in order to take revenge on his Theban homeland by finding support from his new city of Athens. This open perspective involves the audience in thinking about what really happened and reflecting about the relation between ritual, religion, politics, and their manipulations by men for their own purposes. In this way it comes quite close to Euripides' Bacchae written about the same time. OC is thus in many respects like a metatheatrical exploration of the constitutive gap of signifier and signified to be gradually closed by the blind director who gathers, like the blind and unwitting audience, the piecemeal information divulged as the play progresses.
Abnormal Network Traffic Detection Based on Improved LOF Algorithm
Venue: 2018 10th International Conference on Intelligent Human Machine Systems and Cybernetics (IHMSC)
Year: 2018

Aiming at the problems such as the accuracy and time complexity of existing abnormal network traffic detection methods, an abnormal network traffic detection method based on improved LOF algorithm is proposed in this paper. By analyzing the characteristics of the parameter in the traditional LOF algorithm, the model is combined with the DBSCAN algorithm to achieve the adaptive dynamic adjustment of the parameter to the changed data and optimized the accuracy for network traffic scenarios. In addition, algorithm optimization for large amounts of data reduces the time consumption of the model. The experimental results show that the method based on the improved LOF algorithm is of great value in practical application.
Rectification of ENSO variability by interdecadal changes in the equatorial background mean state in a CGCM simulation
Year: 2007

The link between the changes in equatorial background stratification and El Nino Southern Oscillation (ENSO) modulation is investigated using a simulation from a 260 yr long coupled general circulation model (CGCM) The work focuses on the role of nonlinearities associated with equatorial wave dynamics. As a first step, the low frequency change in mean stratification is diagnosed and documented from the shallow water parameters derived from a vertical mode decomposition of the CGCM. The parameters vary differently according to the baroclinic mode order, which may explain why a flattening thermocline does not necessarily lead to reduced ENSO activity. Estimations of baroclinic mode contributions to zonal current anomalies indicate that the decadal variability projects differently for the baroclinic modes as compared to the interannual variability. In particular, the high order modes associated with decadal variability have a more pronounced signature in the western Pacific, whereas that associated with interannual variability (i.e. ENSO) shows more energy in the eastern Pacific. In the light of the results of the CGCM vertical mode decomposition, an intermediate coupled model (ICM) is used to test whether the nonlinearities associated with the changes in the baroclinic mode energy distribution can lead to coherent ENSO modulation. The results indicate that rectification of the interannual variability (ENSO time scales) by the interdecadal variability associated with changes in the oceanic mean states takes place in the ICM. The rectified effect results mostly in an increased variability and skewness of the zonal advection, which tends to produce a zonal seesaw of the sea surface temperature anomaly. A tropical mechanism for producing ENSO modulation is then proposed that reconciles both the rectified effect resulting from nonlinearities associated with equatorial wave dynamics and the tropical decadal mode of thermocline depth arising from Ekman pumping anomalies located in the central South Pacific.
Effects of the novel rib layouts on the tip leakage flow pattern and heat transfer performance of turbine blade
Year: 2020

The steady simulation with flow field and heat transfer performance for different rib layouts is investigated. By referring the GE E3 turbine blade tip (Case 1) profile as a prototype model, four kinds of rib layouts of full rib structure (Case 2) half rib structure connected with suction side (Case 3) half rib structure connected with pressure side (Case 4) and half rib structure in the rear squealer cavity (Case 5) was designed. The availability of k o turbulence model was validated through comparison of heat transfer coefficient distribution with the experimental data. The area averaged heat transfer coefficients of Case 5 decreases up to 11.3% 3.1% 11.3% and 2.8% in comparison to Cases 1, 2, 3, and 4. The total pressure coefficient of Case 5 reduces by 1.4% 2.7% and 4.0% compared to Cases 1, 2, and 3. The results reveal that, among the five novel rib layout cases, Case 5 obtains the optimal comprehensive performance under the performance of considering tip heat transfer and cascade loss. Further investigation on the influence of Cases 1 and 5 at different rotational speeds on the flow field and heat transfer characteristics of the tip clearance is also illustrated and discussed.