Moussab/ORKG-training-evaluation-set huggingface dataset:
Research field: Economics
Title: COVID-19 Disruptions Disproportionately Affect Female Academics
Abstract: The rapid spread of the COVID-19 pandemic and subsequent countermeasures, such as school closures, the shift to working from home, and social distancing are disrupting economic activity around the world. As with other major economic shocks, there are winners and losers, leading to increased inequality across certain groups. In this project, we investigate the effects of COVID-19 disruptions on the gender gap in academia. We administer a global survey to a broad range of academics across various disciplines to collect nuanced data on the respondents’ circumstances, such as a spouse’s employment, the number and ages of children, and time use. We find that female academics, particularly those who have children, report a disproportionate reduction in time dedicated to research relative to what comparable men and women without children experience. Both men and women report substantial increases in childcare and housework burdens, but women experienced significantly larger increases than men did.
Extracted statement — gender: male
Research field: Economics
Title: COVID-19 Disruptions Disproportionately Affect Female Academics
Abstract: The rapid spread of the COVID-19 pandemic and subsequent countermeasures, such as school closures, the shift to working from home, and social distancing are disrupting economic activity around the world. As with other major economic shocks, there are winners and losers, leading to increased inequality across certain groups. In this project, we investigate the effects of COVID-19 disruptions on the gender gap in academia. We administer a global survey to a broad range of academics across various disciplines to collect nuanced data on the respondents’ circumstances, such as a spouse’s employment, the number and ages of children, and time use. We find that female academics, particularly those who have children, report a disproportionate reduction in time dedicated to research relative to what comparable men and women without children experience. Both men and women report substantial increases in childcare and housework burdens, but women experienced significantly larger increases than men did.
Extracted statement — target population: academics
Research field: Economics
Title: COVID-19 Disruptions Disproportionately Affect Female Academics
Abstract: The rapid spread of the COVID-19 pandemic and subsequent countermeasures, such as school closures, the shift to working from home, and social distancing are disrupting economic activity around the world. As with other major economic shocks, there are winners and losers, leading to increased inequality across certain groups. In this project, we investigate the effects of COVID-19 disruptions on the gender gap in academia. We administer a global survey to a broad range of academics across various disciplines to collect nuanced data on the respondents’ circumstances, such as a spouse’s employment, the number and ages of children, and time use. We find that female academics, particularly those who have children, report a disproportionate reduction in time dedicated to research relative to what comparable men and women without children experience. Both men and women report substantial increases in childcare and housework burdens, but women experienced significantly larger increases than men did.
Extracted statement — influencing factor: child
Research field: Economics
Title: COVID-19 Disruptions Disproportionately Affect Female Academics
Abstract: The rapid spread of the COVID-19 pandemic and subsequent countermeasures, such as school closures, the shift to working from home, and social distancing are disrupting economic activity around the world. As with other major economic shocks, there are winners and losers, leading to increased inequality across certain groups. In this project, we investigate the effects of COVID-19 disruptions on the gender gap in academia. We administer a global survey to a broad range of academics across various disciplines to collect nuanced data on the respondents’ circumstances, such as a spouse’s employment, the number and ages of children, and time use. We find that female academics, particularly those who have children, report a disproportionate reduction in time dedicated to research relative to what comparable men and women without children experience. Both men and women report substantial increases in childcare and housework burdens, but women experienced significantly larger increases than men did.
Extracted statement — gender: female
Research field: Energy Systems
Title: Optimal Sizing and Scheduling of Hybrid Energy Systems: The Cases of Morona Santiago and the Galapagos Islands
Abstract: Hybrid energy systems (HESs) generate electricity from multiple energy sources that complement each other. Recently, due to the reduction in costs of photovoltaic (PV) modules and wind turbines, these types of systems have become economically competitive. In this study, a mathematical programming model is applied to evaluate the techno-economic feasibility of autonomous units located in two isolated areas of Ecuador: first, the province of Galapagos (subtropical island) and second, the province of Morona Santiago (Amazonian tropical forest). The two case studies suggest that HESs are potential solutions to reduce the dependence of rural villages on fossil fuels and viable mechanisms to bring electrical power to isolated communities in Ecuador. Our results reveal that not only from the economic but also from the environmental point of view, for the case of the Galapagos province, a hybrid energy system with a PV–wind–battery configuration and a levelized cost of energy (LCOE) equal to 0.36 $/kWh is the optimal energy supply system. For the case of Morona Santiago, a hybrid energy system with a PV–diesel–battery configuration and an LCOE equal to 0.37 $/kWh is the most suitable configuration to meet the load of a typical isolated community in Ecuador. The proposed optimization model can be used as a decision-support tool for evaluating the viability of autonomous HES projects at any other location.
Extracted statement — System location: Galapagos
Research field: Engineering
Title: Micromachined accelerometer with no proof mass
Abstract: This paper describes a revolutionary micromachined accelerometer which is simple, reliable, and inexpensive to make. The operating principle of this accelerometer is based on free-convection heat transfer of a tiny hot air bubble in an enclosed chamber. An experimental device has demonstrated a 0.6 milli-g sensitivity which can theoretically be extended to sub-micro-g level.
Extracted statement — Working fluid: Air
Research field: Engineering
Title: Engineered Hierarchical CuO Nanoleaves Based Electrochemical Nonenzymatic Biosensor for Glucose Detection
Abstract: In this study, we synthesized hierarchical CuO nanoleaves in large-quantity via the hydrothermal method. We employed different techniques to characterize the morphological, structural, optical properties of the as-prepared hierarchical CuO nanoleaves sample. An electrochemical based nonenzymatic glucose biosensor was fabricated using engineered hierarchical CuO nanoleaves. The electrochemical behavior of fabricated biosensor towards glucose was analyzed with cyclic voltammetry (CV) and amperometry (i–t) techniques. Owing to the high electroactive surface area, hierarchical CuO nanoleaves based nonenzymatic biosensor electrode shows enhanced electrochemical catalytic behavior for glucose electro-oxidation in 100 mM sodium hydroxide (NaOH) electrolyte. The nonenzymatic biosensor displays a high sensitivity (1467.32 μ A/(mM cm 2 )), linear range (0.005–5.89 mM), and detection limit of 12 nM (S/N = 3). Moreover, biosensor displayed good selectivity, reproducibility, repeatability, and stability at room temperature over three-week storage period. Further, as-fabricated nonenzymatic glucose biosensors were employed for practical applications in human serum sample measurements. The obtained data were compared to the commercial biosensor, which demonstrates the practical usability of nonenzymatic glucose biosensors in real sample analysis.
Extracted statement — Has study area: Biosensors
Research field: Engineering
Title: Highly Efficient and Stable Sn-Rich Perovskite Solar Cells by Introducing Bromine
Abstract: Compositional engineering of recently arising methylammonium (MA) lead (Pb) halide based perovskites is an essential approach for finding better perovskite compositions to resolve still remaining issues of toxic Pb, long-term instability, etc. In this work, we carried out crystallographic, morphological, optical, and photovoltaic characterization of compositional MASn0.6Pb0.4I3-xBrx by gradually introducing bromine (Br) into parental Pb-Sn binary perovskite (MASn0.6Pb0.4I3) to elucidate its function in Sn-rich (Sn:Pb = 6:4) perovskites. We found significant advances in crystallinity and dense coverage of the perovskite films by inserting the Br into Sn-rich perovskite lattice. Furthermore, light-intensity-dependent open circuit voltage (Voc) measurement revealed much suppressed trap-assisted recombination for a proper Br-added (x = 0.4) device. These contributed to attaining the unprecedented power conversion efficiency of 12.1% and Voc of 0.78 V, which are, to the best of our knowledge, the highest performance in the Sn-rich (≥60%) perovskite solar cells reported so far. In addition, impressive enhancement of photocurrent-output stability and little hysteresis were found, which paves the way for the development of environmentally benign (Pb reduction), stable monolithic tandem cells using the developed low band gap (1.24-1.26 eV) MASn0.6Pb0.4I3-xBrx with suggested composition (x = 0.2-0.4).
Extracted statement — keywords: Bromine
Research field: Engineering
Title: High-isolation CPW MEMS shunt switches-part 1: modeling 
Abstract: This paper, the first of two parts, presents an electromagnetic model for membrane microelectromechanical systems (MEMS) shunt switches for microwave/millimeter-wave applications. The up-state capacitance can be accurately modeled using three-dimensional static solvers, and full-wave solvers are used to predict the current distribution and inductance of the switch. The loss in the up-state position is equivalent to the coplanar waveguide line loss and is 0.01-0.02 dB at 10-30 GHz for a 2-/spl mu/m-thick Au MEMS shunt switch. It is seen that the capacitance, inductance, and series resistance can be accurately extracted from DC-40 GHz S-parameter measurements. It is also shown that dramatic increase in the down-state isolation (20/sup +/ dB) can be achieved with the choice of the correct LC series resonant frequency of the switch. In part 2 of this paper, the equivalent capacitor-inductor-resistor model is used in the design of tuned high isolation switches at 10 and 30 GHz.
Extracted statement — keywords: Capacitance
Research field: Engineering
Title: Effect of Environmental Humidity on Dielectric Charging Effect in RF MEMS Capacitive Switches Based on C–V Properties
Abstract: A capacitance-voltage (C- V) model is developed for RF microelectromechanical systems (MEMS) switches at upstate and downstate. The transient capacitance response of the RF MEMS switches at different switch states was measured for different humidity levels. By using the C -V model as well as the voltage shift dependent of trapped charges, the transient trapped charges at different switch states and humidity levels are obtained. Charging models at different switch states are explored in detail. It is shown that the injected charges increase linearly with humidity levels and the internal polarization increases with increasing humidity at downstate. The speed of charge injection at 80% relative humidity (RH) is about ten times faster than that at 20% RH. A measurement of pull-in voltage shifts by C- V sweep cycles at 20% and 80 % RH gives a reasonable evidence. The present model is useful to understand the pull-in voltage shift of the RF MEMS switch.
Extracted statement — keywords: Capacitance
Research field: Engineering
Title: Flexible Quasi-Vertical In-Ga-Zn-O Thin-Film Transistor With 300-nm Channel Length
Abstract: In this letter, we report a flexible Indium-Gallium-Zinc-Oxide quasi-vertical thin-film transistor (QVTFT) with 300-nm channel length, fabricated on a free-standing polyimide foil, using a low-temperature process <;150 °C. A bilayer lift-off process is used to structure a spacing layer with a tilted sidewall and the drain contact on top of the source electrode. The resulting quasi-vertical profile ensures a good coverage of the successive device layers. The fabricated flexible QVTFT exhibits an ON/OFF current ratio of 104, a threshold voltage of 1.5 V, a maximum transconductance of 0.73 μS μm-1, and a total gate capacitance of 76 nF μm-1. From S-parameter measurements, we extracted a transit frequency of 1.5 MHz. Furthermore, the flexible QVTFT is fully operational when bent to a tensile radius of 5 mm.
Extracted statement — keywords: Capacitance
Research field: Engineering
Title: Effects of surface roughness on electromagnetic characteristics of capacitive switches
Abstract: This paper studies the effect of surface roughness on up-state and down-state capacitances of microelectromechanical systems (MEMS) capacitive switches. When the root-mean-square (RMS) roughness is 10 nm, the up-state capacitance is approximately 9% higher than the theoretical value. When the metal bridge is driven down, the normalized contact area between the metal bridge and the surface of the dielectric layer is less than 1% if the RMS roughness is larger than 2 nm. Therefore, the down-state capacitance is actually determined by the non-contact part of the metal bridge. The normalized isolation is only 62% for RMS roughness of 10 nm when the hold-down voltage is 30 V. The analysis also shows that the down-state capacitance and the isolation increase with the hold-down voltage. The normalized isolation increases from 58% to 65% when the hold-down voltage increases from 10 V to 60 V for RMS roughness of 10 nm.
Extracted statement —  MEMS switch type: Capacitive
Research field: Engineering
Title: Flexible Capacitive Pressure Sensor Enhanced by Tilted Micropillar Arrays
Abstract: Sensitivity of the sensor is of great importance in practical applications of wearable electronics or smart robotics. In the present study, a capacitive sensor enhanced by a tilted micropillar array-structured dielectric layer is developed. Because the tilted micropillars undergo bending deformation rather than compression deformation, the distance between the electrodes is easier to change, even discarding the contribution of the air gap at the interface of the structured dielectric layer and the electrode, thus resulting in high pressure sensitivity (0.42 kPa-1) and very small detection limit (1 Pa). In addition, eliminating the presence of uncertain air gap, the dielectric layer is strongly bonded with the electrode, which makes the structure robust and endows the sensor with high stability and reliable capacitance response. These characteristics allow the device to remain in normal use without the need for repair or replacement despite mechanical damage. Moreover, the proposed sensor can be tailored to any size and shape, which is further demonstrated in wearable application. This work provides a new strategy for sensors that are required to be sensitive and reliable in actual applications.
Extracted statement — keywords: Capacitive
Research field: Engineering
Title: Hybrid Perovskite Films by a New Variant of Pulsed Excimer Laser Deposition: A Room-Temperature Dry Process
Abstract: A new variant of the classic pulsed laser deposition (PLD) process is introduced as a room-temperature dry process for the growth and stoichiometry control of hybrid perovskite films through the use of nonstoichiometric single target ablation and off-axis growth. Mixed halide hybrid perovskite films nominally represented by CH3NH3PbI3–xAx (A = Cl or F) are also grown and are shown to reveal interesting trends in the optical properties and photoresponse. Growth of good quality lead-free CH3NH3SnI3 films is also demonstrated, and the corresponding optical properties are presented. Finally, perovskite solar cells fabricated at room temperature (which makes the process adaptable to flexible substrates) are shown to yield a conversion efficiency of about 7.7%.
Extracted statement — keywords: Deposition
Research field: Engineering
Title: Efficiently Improving the Stability of Inverted Perovskite Solar Cells by Employing Polyethylenimine-Modified Carbon Nanotubes as Electrodes
Abstract: Inverted perovskite solar cells (PSCs) have been becoming more and more attractive, owing to their easy-fabrication and suppressed hysteresis, while the ion diffusion between metallic electrode and perovskite layer limit the long-term stability of devices. In this work, we employed a novel polyethylenimine (PEI) modified cross-stacked superaligned carbon nanotube (CSCNT) film in the inverted planar PSCs configurated FTO/NiO x/methylammonium lead tri-iodide (MAPbI3)/6, 6-phenyl C61-butyric acid methyl ester (PCBM)/CSCNT:PEI. By modifying CSCNT with a certain concentration of PEI (0.5 wt %), suitable energy level alignment and promoted interfacial charge transfer have been achieved, leading to a significant enhancement in the photovoltaic performance. As a result, a champion power conversion efficiency (PCE) of ∼11% was obtained with a Voc of 0.95 V, a Jsc of 18.7 mA cm-2, a FF of 0.61 as well as negligible hysteresis. Moreover, CSCNT:PEI based inverted PSCs show superior durability in comparison to the standard silver based devices, remaining over 85% of the initial PCE after 500 h aging under various conditions, including long-term air exposure, thermal, and humid treatment. This work opens up a new avenue of facile modified carbon electrodes for highly stable and hysteresis suppressed PSCs.
Extracted statement — keywords: Electrodes
Research field: Engineering
Title: A zipper RF MEMS tunable capacitor with interdigitated RF and actuation electrodes
Abstract: This paper presents a new RF MEMS tunable capacitor based on the zipper principle and with interdigitated RF and actuation electrodes. The electrode configuration prevents dielectric charging under high actuation voltages. It also increases the capacitance ratio and the tunable analog range. The effect of the residual stress on the capacitance tunability is also investigated. Two devices with different interdigital RF and actuation electrodes are fabricated on an alumina substrate and result in a capacitance ratio around 3.0 (Cmin = 70?90 fF, Cmax = 240?270 fF) and with a Q > 100 at 3 GHz. This design can be used in wideband tunable filters and matching networks.
Extracted statement — keywords: Electrodes
Research field: Engineering
Title: Quality Inspection of Textile Artificial Textures Using a Neuro-Symbolic Hybrid System Methodology 
Abstract: In the industrial sector there are many processes where the visual inspection is essential, the automation of that processes becomes a necessity to guarantee the quality of several objects. In this paper we propose a methodology for textile quality inspection based on the texture cue of an image. To solve this, we use a Neuro-Symbolic Hybrid System (NSHS) that allow us to combine an artificial neural network and the symbolic representation of the expert knowledge. The artificial neural network uses the CasCor learning algorithm and we use production rules to represent the symbolic knowledge. The features used for inspection has the advantage of being tolerant to rotation and scale changes. We compare the results with those obtained from an automatic computer vision task, and we conclude that results obtained using the proposed methodology are better.
Extracted statement — Has participants: expert
Research field: Engineering
Title: Flexible Self-Aligned Amorphous InGaZnO Thin-Film Transistors With Submicrometer Channel Length and a Transit Frequency of 135 MHz
Abstract: Flexible large area electronics promise to enable new devices such as rollable displays and electronic skins. Radio frequency (RF) applications demand circuits operating in the megahertz regime, which is hard to achieve for electronics fabricated on amorphous and temperature sensitive plastic substrates. Here, we present self-aligned amorphous indium-gallium-zinc oxide-based thin-film transistors (TFTs) fabricated on free-standing plastic foil using fabrication temperatures . Self-alignment by backside illumination between gate and source/drain electrodes was used to realize flexible transistors with a channel length of 0.5 μm and reduced parasitic capacities. The flexible TFTs exhibit a transit frequency of 135 MHz when operated at 2 V. The device performance is maintained when the TFTs are bent to a tensile radius of 3.5 mm, which makes this technology suitable for flexible RFID tags and AM radios.
Extracted statement — keywords: Fabrication
Research field: Engineering
Title: Solar Blind Photodetectors Enabled by Nanotextured β-Ga2O3 Films Grown via Oxidation of GaAs Substrates
Abstract: A simple and inexpensive method for growing Ga<sub>2</sub>O<sub>3</sub> using GaAs wafers is demonstrated. Si-doped GaAs wafers are heated to 1050 °C in a horizontal tube furnace in both argon and air ambients in order to convert their surfaces to β-Ga<sub>2</sub>O<sub>3</sub>. The β-Ga<sub>2</sub>O<sub>3</sub> films are characterized using scanning electron micrograph, energy-dispersive X-ray spectroscopy, and X-ray diffraction. They are also used to fabricate solar blind photodetectors. The devices, which had nanotextured surfaces, exhibited a high sensitivity to ultraviolet (UV) illumination due in part to large surface areas. Furthermore, the films have coherent interfaces with the substrate, which leads to a robust device with high resistance to thermo-mechanical stress. The photoconductance of the β-Ga<sub>2</sub>O<sub>3</sub> films is found to increase by more than three orders of magnitude under 270 nm ultraviolet illumination with respect to the dark current. The fabricated device shows a responsivity of ∼292 mA/W at this wavelength.
Extracted statement — substrate: GaAs
Research field: Engineering
Title: Glucose Biosensor Based on Disposable Activated Carbon Electrodes Modified with Platinum Nanoparticles Electrodeposited on Poly(Azure A)
Abstract: Herein, a novel electrochemical glucose biosensor based on glucose oxidase (GOx) immobilized on a surface containing platinum nanoparticles (PtNPs) electrodeposited on poly(Azure A) (PAA) previously electropolymerized on activated screen-printed carbon electrodes (GOx-PtNPs-PAA-aSPCEs) is reported. The resulting electrochemical biosensor was validated towards glucose oxidation in real samples and further electrochemical measurement associated with the generated H2O2. The electrochemical biosensor showed an excellent sensitivity (42.7 μA mM−1 cm−2), limit of detection (7.6 μM), linear range (20 μM–2.3 mM), and good selectivity towards glucose determination. Furthermore, and most importantly, the detection of glucose was performed at a low potential (0.2 V vs. Ag). The high performance of the electrochemical biosensor was explained through surface exploration using field emission SEM, XPS, and impedance measurements. The electrochemical biosensor was successfully applied to glucose quantification in several real samples (commercial juices and a plant cell culture medium), exhibiting a high accuracy when compared with a classical spectrophotometric method. This electrochemical biosensor can be easily prepared and opens up a good alternative in the development of new sensitive glucose sensors.
Extracted statement — keywords: glucose