Miracle-dz/UniFAR-FTUs huggingface dataset:
Design and fabrication of a crawling robot based on a soft actuator

Inspired by biological systems, soft crawling robots provide unique advantages in terms of resilience and adaptive shaping during robotic motion. However, soft robots actuated by motors and pumps are usually heavy, noisy and bulky. In this paper, based on the principle of liquid-vapor changes of ethanol, a novel soft crawling robot that demonstrates more silent actuation and lighter weight compared with other robots is proposed. To increase the crawling speed of the robot, silicone mixed with liquid metal with a volume ratio of 20% is used to fabricate the actuators. The deformation of the actuator is analyzed and can be predicted using a theoretical model. To obtain effective crawling performance, a crawling locomotion sequence consisting of the three different parts (central, head and tail) based on the variable friction mechanism of actuators B and C is presented. The experimental results demonstrate that the robot can achieve forward movement on a horizontal surface and along vertical pipes and sticks. This study will provide further inspiration and guidance for the future development of crawling robots.
Assessment of muscle mass with computerised tomography in patients with incurable gastrointestinal cancer. A prospective single centre study

Objective Body composition is often affected in patients with incurable cancer, but the prevalence of sarcopenia is unknown. Our aim was to evaluate sarcopenia as predictor of overall survival in a cohort of patients with incurable gastrointestinal cancer and furthermore to evaluate if this cohort had different characteristics than patients, from an identical cohort who accepted participation in a RCT. Design and methods In this single centre study, we prospectively included a cohort of patients with incurable gastrointestinal cancer nutritionally at risk (NRS 2002? 2). Patients were screened but refused participation in an RCT testing supplemental HPN. To assess sarcopenia, data on skeletal muscle mass (SMM) from the cross-sectional area of L3 were assessed using computerized tomography scan (CT scan). SMM evaluation was included if a CT scan was available within 60 days from the inclusion date. Differences in survival were tested according to sarcopenia and modified Glasgow Prognostic Score (mGPS). Survival was compared between the patients who refused to participate in the RCT and patients who actually did participate. Results Eligible for inclusion were 187 patients, and 165 had a CT scan available for analysis. Most prevalent diagnosis was pancreatic cancer (52%), median age was 70.5 (41.2-89.4), median BMI 22.3 (14.4-36.8) and 99% were receiving chemotherapy. Sarcopenia was present in 78% of the overall cohort, more women (88%) than men (70%) were sarcopenic at inclusion. There was a positive correlation between BMI and SMM, but SMM accounted for only 8% of the variance in BMI. Conclusions Prevalence of sarcopenia was high in this cohort of patient with incurable gastrointestinal cancer; SMM did positively correlate to BMI, but only accounted for minor variations. mGPS was in the multivariate cox regression model predictive of survival and sarcopenia did not add to this elevated risk.
Fluidelastic Instability in Shell and Tube Heat Exchangers: A Framework for a Prediction Method

A framework for a method to predict fluid-elastic instability in heat exchanger tube bundles is presented. The method relies on a three-dimensional, cylindrical coordinate, thermal-hydraulic analysis code to obtain a representation of the three-dimensional flow distribution within the heat exchanger. With this information, local cross-flow velocities corresponding to each tube in the exchanger are obtained by interpolation and resultant cross-flow velocity distributions are computed. With a knowledge of the vibration mode shapes and frequencies, reduced effective cross-flow velocities are then computed for each tube. A comparison with experimental results shows excellent agreement: the tubes with high values of predicted reduced effective cross-flow velocity are the same tubes that first experience fluid-elastic instability in the flow tests and vibrate most violently; also, the simulation correctly predicts that the tubes directly exposed to the flow from the inlet nozzle have a low potential for fluid-elastic instability. Very good agreement is also shown in the comparison of the predicted reduced effective cross-flow velocities with the critical value obtained from a design guide. In summary, the feasibility of developing a heat exchanger tube vibration prediction method, based on a computer simulation of flow distribution, is demonstrated. Such a method would have immediate application in design optimization. However, further development and evaluation are required.
Drum screens in mineral mining

R — is the inner radius of the drum and D is its diameter. The velocity of rotations is such a velocity at which forces of gravity and centrifugal force of particles equilibrate and when it is exceeded a simultaneous motion of particles and the drum starts. The motion of particles in the drum is shown schematically in Figure 1. The layer of granular mineral material is represented by a shaded area, where α is the angle of external friction of material against the drum. During rotary motion the material is elevated at a certain level, determined by angle β (β > α). This is the so-called angle of elevation which for mineral material is from 40° to 48°. Therefore, many authors [2–4] give a formula to determine the operating speed of a drum screen.
Mechanization in Industry

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Improved microphone array configurations for auralization of sound fields by Wave Field Synthesis.

In order to correctly reproduce ( “auralize” ) the acoustic wave field in a hall through a wave-field synthesis (WFS) system, impulse responses are nowadays measured along arrays of microphone positions. Three array configurations are considered ‐ linear, cross, and circular. The linear and cross array configurations both have strong limitations, most of which can be avoided by using circular arrays. Auralization techniques are explained for all types of arrays. For the circular array configuration the connection between circular holophony, highorder incoming and outgoing ambisonics, and plane-wave decomposition for a sound field will be established and used as a tool for auralization.
La gestión de programas académicos desde la perspectiva de la gestión del conocimiento apoyada con esquemas preconceptuales

Unification of academic program processes and goals is still far from the state of the art. Such unification can be reached by using knowledge management processes. For this reason, in this paper we propose a revi­sited version of a previous pre-conceptual-schema-based representation of the academic programs. We design a survey directed to experts and we obtain several responses. The resulting pre-conceptual schema is exemplified by using the system engineering program belonging to the Universidad de Medellin
An appetite for creative destruction: should the senior academic technology officer be modelled on the CIO or the CTO?

We examine the emerging role of Senior Academic Technology Officer and the shift from having acknowledged expertise to acquiring legitimate organizational power. We are particularly interested in the match or mismatch between their own appetite for radical technological change, i.e. for creative destruction (Schumpeter, 1942) and that of the institution. We also consider two existing templates for such a role from mainstream information management and information technology: the Chief Information Officer and the Chief Technology Officer.
Amplitude and frequency demodulation controller for MEMS accelerometer

Draper Laboratory is developing a high precision MEMS accelerometer. This thesis describes and analyzes the electronics which produce the acceleration estimate and control the actuators within the sensor. The Vector Readout method of amplitude and frequency demodulation is described and shown to be a high precision, environmentally stable method of demodulation. The Vector Readout method of demodulation uses a Hilbert Transform filter and the CORDIC algorithm to simultaneously estimate both the amplitude and phase of a signal. A feedback controller is designed to hold the oscillation of a mass resonator at a constant amplitude. Thesis Supervisor: Paul Ward Title: Charles Stark Draper Laboratory Thesis Supervisor: Rahul Sarpeshkar Title: Assistant Professor
Wind tunnel investigation of helicopter-rotor wake effects on three helicopter fuselage models

The effects of rotor downwash on helicopter fuselage aerodynamic characteristics were investigated. A rotor model for generating the downwash was mounted close to each of three fuselage models. The main report presents the force and moment data in both graphical and tabular form and the pressure data in graphical form. This supplement presents the pressure data in tabular form. Each run or parameter sweep is identified by a unique run number. The data points in each run are identified by a point number. The pressure data can be matched to the force data by matching the run and point number.
CAD and creativity: a new pedagogy

In 2007, the Design and Technology (D&T) national curriculum for England suggested: ‘In design and technology pupils combine practical and technological skills with creative thinking to design and make products and systems that meet human needs. They learn to use current technologies and consider the impact of future technological developments’. Consequently in England, the use of Computer Aided Design (CAD) packages has become a significant part of the teaching of D&T to students from the ages of 11 to 16 years but often using a teaching strategy that concentrates on the functionality of the CAD package. In contrast, this paper presents findings from a three-year intervention study. The programme investigated how 11-14 year old students can develop their creativity at the same time as learning complex 3D solid modelling computer aided design programmes through an improved pedagogy. The study was broadly an ‘action research’ programme in five phases in which the researcher was also the teacher in the secondary school in which four of the five phases were conducted. This paper provides details of the construction of a new approach to the teaching of CAD, and evidence that the novel teaching methods have improved the students’ and teachers’ confidence to take risks when using the CAD software, therefore leading to more creative and complex outcomes.
The allocation of effort to university- industry interactive activities by faculty members: a theoretical and empirical approach

We develop a model of individual choice in which faculty member is the rational agent and maximises a utility function. We find an interior optimum of interactive effort that depends on parameters of the utility function, wage, net revenue from a unit of knowledge produced by interactive activities, relative weight given to interactive vs. non-interactive activities in the determination of prestige and knowledge contribution by unit of time allocated to each activity. The model is tested by using a sample of 380 university professors from the Valencian Community, a Spanish region. We use censored and discrete choice econometric models to estimate an equation for the optimum effort allocated to interactive activities and another one for the real interaction. We conclude, first, that interaction activities could be explained by a maximising utility model and that individual responds to non-monetary rather than monetary incentives and to the difficulty of producing non-interactive rather than interactive knowledge. Second, we detect the possible existence of rationing, since optimum effort and real interaction depend on different variables. This is possibly an idiosyncrasy of our sample, coming from a region with low absorptive capacity. Policy initiatives may see the promotion (or disincentive) of university-industry interaction as a mediumlong term target rather than a short-term one and may be aware of situations arising from rationing.
Abstract interpretation of reactive systems : abstractions preserving ..

interpretation of reactive systems : abstractions preserving $\forall$CTL*, $\exists$CTL* and CTL* Citation for published version (APA): Dams, D. R. , Grumberg, O. , & Gerth, R. T. (1994). Abstract interpretation of reactive systems : abstractions preserving $\forall$CTL*, $\exists$CTL* and CTL*. (Computing science notes; Vol. 9424). Eindhoven: Technische Universiteit Eindhoven. Document status and date: Published: 01/01/1994 Document Version: Publisher’s PDF, also known as Version of Record (includes final page, issue and volume numbers) Please check the document version of this publication: • A submitted manuscript is the version of the article upon submission and before peer-review. There can be important differences between the submitted version and the official published version of record. People interested in the research are advised to contact the author for the final version of the publication, or visit the DOI to the publisher's website. • The final author version and the galley proof are versions of the publication after peer review. • The final published version features the final layout of the paper including the volume, issue and page numbers. Link to publication General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. • Users may download and print one copy of any publication from the public portal for the purpose of private study or research. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal. If the publication is distributed under the terms of Article 25fa of the Dutch Copyright Act, indicated by the “Taverne” license above, please follow below link for the End User Agreement: www.tue.nl/taverne Take down policy If you believe that this document breaches copyright please contact us at: openaccess@tue.nl providing details and we will investigate your claim. Download date: 01. Dec. 2019 Eindhoven University of Technology Department of Mathematics and Computing Science Abstract Interpretation of Reactive Systems: Abstractions Preserving 'I1CTL *. 3CTL * and CTL *Interpretation of Reactive Systems: Abstractions Preserving 'I1CTL *. 3CTL * and CTL *
Experimental and numerical analysis of gate- and drain-lag phenomena in AlGaAs/InGaAs PHEMTs

Gate- and drain-lag phenomena are investigated in AlGaAs-InGaAs pseudomorphic HEMTs by comparing experimental transient and pulsed characteristics with simulated ones. A consistent interpretation for experimental data is provided, relying on the assumption that acceptor-like surface traps are present at the ungated surface between gate and source/drain contacts.
Effect of Global Ventilation to Perfusion Ratio, for Normal Lungs, on Desflurane and Sevoflurane Elimination Kinetics

Background: Kinetics of the uptake of inhaled anesthetics have been well studied, but the kinetics of elimination might be of more practical importance. The objective of the authors’ study was to assess the effect of the overall ventilation/perfusion ratio (VA/Q), for normal lungs, on elimination kinetics of desflurane and sevoflurane. Methods: The authors developed a mathematical model of inhaled anesthetic elimination that explicitly relates the terminal washout time constant to the global lung VA/Q ratio. Assumptions and results of the model were tested with experimental data from a recent study, where desflurane and sevoflurane elimination were observed for three different VA/Q conditions: normal, low, and high. Results: The mathematical model predicts that the global VA/Q ratio, for normal lungs, modifies the time constant for tissue anesthetic washout throughout the entire elimination. For all three VA/Q conditions, the ratio of arterial to mixed venous anesthetic partial pressure Part/Pmv reached a constant value after 5 min of elimination, as predicted by the retention equation. The time constant corrected for incomplete lung clearance was a better predictor of late-stage kinetics than the intrinsic tissue time constant. Conclusions: In addition to the well-known role of the lungs in the early phases of inhaled anesthetic washout, the lungs play a long-overlooked role in modulating the kinetics of tissue washout during the later stages of inhaled anesthetic elimination. The VA/Q ratio influences the kinetics of desflurane and sevoflurane elimination throughout the entire elimination, with more pronounced slowing of tissue washout at lower VA/Q ratios. A mathematical model of inhaled anesthetic elimination was developed in a post hoc analysis of anesthetic partial pressures measured in mixed venous and arterial blood samples after simultaneous administration of desflurane and sevoflurane to seven piglets under normal, low, and high ventilation/perfusion ratio conditions. After a brief and rapid decline in alveolar anesthetic partial pressure, the fractional clearance of anesthetic became constant, and incomplete clearance from the lungs slowed tissue washout. Slowing of tissue elimination by incomplete lung clearance became more pronounced at low ventilation/perfusion ratios, and was predicted to become more pronounced as blood/gas solubility increases.
Integrated analysis of expression, prognostic value and immune infiltration of GSDMs in hepatocellular carcinoma

Six Gasdermins (GSDM) family members participate in various biological processes especially pyroptosis, as well as in the initiation and development of many types of cancer. However, the systematic analysis of the GSDM family in hepatocellular carcinoma (HCC) is lacking. In this study, several bioinformatics databases were recruited to analyze the roles of the GSDMs in differential expression, prognostic correlation, functional enrichment exploration, immune modulation, genetic alterations, and methylated modification in patients with HCC. Consequently, the mRNA expression of all the six GSDMs was accordantly increased in HCC, while only the protein expressions of GSDMB, GSDMD, and GSDME were apparently increased in HCC tissue. The expression of all the GSDMs (except GSDMA) was significantly higher in tumor stage 1–3 subgroups, compared with that in normal subgroups. Higher GSDME expression was significantly associated with shorter overall survival (OS) and disease specific survival (DSS) in patients with HCC. GSDMD had the highest genetic alteration rate among the GSDMs. The three signal pathways which were most likely related to GSDMs-associated molecules were the cell adhesion, growth regulation, and hormone metabolic process. The majority of GSDMs members were positively correlated with the infiltration of B cells, neutrophils, and dendritic cells, however negatively correlated with macrophage. All of the six GSDM members showed remarkably decreased methylation levels in HCC tissues. In conclusion, the GSDM family (especially GSDME) had the potential to become essential biomarkers to better improve the diagnosis and prognosis of HCC, as well as provided insight for the development of therapeutic targets.
Achievements and Challenges of Solar Electricity from Photovoltaics

Congratulations! You are reading a book about a technology that has changed the way we think about energy. Photovoltaics (or PV) is an empowering technology that has shown that it can generate electricity for the human race for a wide range of applications, scales, climates, and geographic locations. Photovoltaics can bring electricity to a rural homemaker who lives 100 kilometers and 100 years away from the nearest electric grid connection in her country, thus allowing her family to have clean, electric lights instead of kerosene lamps, to listen to a radio, and to run a sewing machine for additional income. It can pump clean water from underground aquifers for drinking or watering crops or cattle. Or, photovoltaics can provide electricity to remote transmitter stations in the mountains, allowing better communication without building a road to deliver diesel fuel for its generator. It can allow a suburban or urban homeowner to produce some or all of their annual electricity, selling any excess solar electricity back into the grid. It can help a major electric utility in Los Angeles, Tokyo, or Madrid to meet its peak load on hot summer afternoons when air conditioners are working full time. Finally, photovoltaics has been powering satellites orbiting the Earth for 30 years or vehicles roving over the surface of Mars.
Associations of obesity, physical activity level, inflammation and cardiometabolic health with COVID-19 mortality: a prospective analysis of the UK Biobank cohort

Objectives To investigate the associations of physical activity level with COVID-19 mortality risk across body mass index (BMI) categories, and to determine whether any protective association of a higher physical activity level in individuals with obesity may be explained by favourable levels of cardiometabolic and inflammatory biomarkers. Design Prospective cohort study (baseline data collected between 2006 and 2010). Physical activity level was assessed using the International Physical Activity Questionnaire (high: ≥3000 Metabolic Equivalent of Task (MET)-min/week, moderate: ≥600 MET-min/week, low: not meeting either criteria), and biochemical assays were conducted on blood samples to provide biomarker data. Setting UK Biobank. Main outcome measures Logistic regressions adjusted for potential confounders were performed to determine the associations of exposure variables with COVID-19 mortality risk. Mortality from COVID-19 was ascertained by death certificates through linkage with National Health Service (NHS) Digital. Results Within the 259 397 included participants, 397 COVID-19 deaths occurred between 16 March 2020 and 27 February 2021. Compared with highly active individuals with a normal BMI (reference group), the ORs (95% CIs) for COVID-19 mortality were 1.61 (0.98 to 2.64) for highly active individuals with obesity, 2.85 (1.78 to 4.57) for lowly active individuals with obesity and 1.94 (1.04 to 3.61) for lowly active individuals with a normal BMI. Of the included biomarkers, neutrophil count and monocyte count were significantly positively associated with COVID-19 mortality risk. In a subanalysis restricted to individuals with obesity, adjusting for these biomarkers attenuated the higher COVID-19 mortality risk in lowly versus highly active individuals with obesity by 10%. Conclusions This study provides novel evidence suggesting that a high physical activity level may attenuate the COVID-19 mortality risk associated with obesity. Although the protective association may be partly explained by lower neutrophil and monocyte counts, it still remains largely unexplained by the biomarkers included in this analysis.