Miracle-dz/UniFAR-FTUs huggingface dataset:
Transient response and dynamic characterization of a new active filter algorithm based on self-tuned vector filter

A new method for calculating the reference of an active filter was presented by the authors in previous papers. This method has demonstrated very good performance on distorted and unbalanced conditions, although no transient analysis had been made. In this paper, the method is analyzed in transient conditions, showing very good response in load changes and frequency perturbations. The influence of variation of the filter constant, k/sub f/ is studied, by means of simulation and experimentation, in order to determine the influence of this parameter. For this purposes a performance index is defined and measured in different conditions to deduce the dependence of the transient response with respect to the constant k/sub f/. Extensive simulations and experimentations have been made showing a very interesting, and somehow unpredicted result. Also, the ability of adapting the fundamental frequency is tested, and studied its dependence with k/sub f/ and with the constant KI associated to the frequency control loop. This was another property enounced in previous works but never tested before, and the results are really good, both in simulation and experimental cases, confirming that is a self-tuned filter. Some design criteria are exposed in order to facilitate the implementation of an active power filter based on this kind of structure.
Micro and nano technologies in medical applications: a challenge

This paper is aimed at the analysis of the main characteristics of recent micro-devices for biomedical applications. The massive use of microtechnologies is limited today to a reduced number of fields such as: telemedicine, bioanalysis, patient monitoring, implantable devices for functional regeneration, diseases treatment, signal recording, and minimally invasive surgery. The various aspects of the current tendencies are also analysed. We conclude with the biomedical devices that CNM has developed or is currently developing.
A City-Level Boundary Nodes Identification Algorithm Based on Bidirectional Approaching

Existing city-level boundary nodes identification methods need to locate all IP addresses on the path to differentiate which IP is the boundary node. However, these methods are susceptible to time-delay, the accuracy of location information and other factors, and the resource consumption of locating all IPes is tremendous. To improve the recognition rate and reduce the locating cost, this paper proposes an algorithm for city-level boundary node identification based on bidirectional approaching. Different from the existing methods based on time-delay information and location results, the proposed algorithm uses topological analysis to construct a set of candidate boundary nodes and then identifies the boundary nodes. The proposed algorithm can identify the boundary of the target city network without high-precision location information and dramatically reduces resource consumption compared with the traditional algorithm. Meanwhile, it can label some errors in the existing IP address database. Based on 45,182,326 measurement results from Zhengzhou, Chengdu and Hangzhou in China and New York, Los Angeles and Dallas in the United States, the experimental results show that: The algorithm can accurately identify the city boundary nodes using only 20.33% location resources, and more than 80.29% of the boundary nodes can be mined with a precision of more than 70.73%.
Exploring the Relationship of Personality and Social Support Types among College Students

This study investigated the relationship between Big Five personality traits and social support types among college students. Data was collected from 189 university students from a research institution in the US. Findings indicated that learners who have Agreeableness and Extraversion personality traits seek for more broadly social support resources in college study and life. Additionally, learners who have Neuroticism traits are negatively associated with all social support resources. It is expected that this study would assist college faculty and student affairs professionals to better understand the differences of personality traits among college students and craft feasible strategies so as to encourage these students to seek sufficient social support resources on their personal development.
Pneumococcal serotypes in children and relationship with clinical presentation and antimicrobial susceptibility in the PCV13 era

Background: The aim of this study was to analyse the serotypes causing invasive pneumococcal disease (IPD) according to the clinical presentation, and antimicrobial susceptibility in children aged ≤17 years before the introduction of the 13-valent pneumococcal conjugate vaccine (PCV13) in the official paediatric schedule. Methods: We conducted a prospective study in children ≤17 years with IPD attended in three Catalan hospitals between January 2012 and June 2016. IPD cases were diagnosed by culture or RT-PCR. Demographic, microbiological, and clinical data were analysed. Associations were assessed using the odds ratio (OR) and 95% confidence intervals (CI). Results: Of the 253 cases included, 34.4% were aged < 2 years, 38.7% 2-4 years and 26.9% 5-17 years. Over 64% of cases were PCV13 serotypes. Cases with PCV13 serotypes were associated with overall pneumonia (OR:7.47[4.0-13.96]) and complicated pneumonia (OR:7.2[4.04-12.75]), overall and in each age group (p<0.05). Serotypes 3 and 1 were associated with complicated pneumonia (p<0.05). Non-PCV13 serotypes were associated with meningitis (OR:7.32[2.33-22. 99]) and occult bacteremia (OR:3.6[1.56-8.76]). Serotype 19A was more frequent in children aged <2 years and serotype 3 and 1 in those aged 2-4 years and >4 years, respectively. Forty-four cases (36.1%) were non-susceptible to penicillin and 16.4% were also non-susceptible to cefotaxime. There were no significant differences between PCV13 and non-PCV13 cases with non-susceptible penicillin strains (36.1% and 36.0%, respectively), while PCV13 cases showed more frequently non-susceptible cefotaxime strains (23.6%; p=0.010). Serotypes 19A and 14 were associated with non-susceptibility to both penicillin and cefotaxime strains (p=0.003 and p<0.001, respectively) and serotype 19A with resistant to penicillin (p=0.002) Conclusions: PCV13 serotypes were the most frequent serotypes in children aged ≤17years, mainly serotype 3, 1 and 19A. Non-PCV13 serotypes were associated with meningitis and occult bacteraemia while PCV13 serotypes with pneumonia. PCV13 and non-PCV13 cases presented high frequency of non-susceptibility to penicillin. Serotypes 19A, and 14 were associated with non-susceptibility to both penicillin and cefotaxime, and serotype19A with penicillin resistance.
Analysis of a Collapse in Deep Tunnel Based on Microseismic Monitoring

Tunnel collapse causes serious casualties and economic losses. One typical case analysis of a collapse in deep-buried tunnel based on microseismic monitoring is presented. The results show that the number of microseismic event keeps increasing and the distribution of microseismic events becomes concentrated in space domain gradually during collapse nucleation process. And average distance squared decreases gradually during the imminent period time just before the collapse. The failure evolution mechanism of the collapse is analyzed by moment tensor method. It is noted that the failure mechanism between this kind of collapse and immediate strain-structure rockburst is similar. However, the proportion of shear and mixed fracture for collapse is higher than immediate strain-structure rockburst. It due to the rich structure planes in collapse zone.
Analysis of Normal and Superconducting Coplanar Waveguides in Radio Astronomy

In terahertz radio astronomy, superconducting coplanar waveguide resonators have been commonly applied in Kinetic Inductance Detectors (KIDs) to measure the absorption of photon energy in the millimeter and submillimeter bands. Here, we present an analysis on the performance of superconducting niobium coplanar waveguides (CPWs). To compute the loss in a superconducting CPW, we have incorporated the complex conductivity developed by Matis and Bardeen based on the superconducting BCS theory, into the CPW loss equation. We have made a comparison between the loss in a CPW at room temperature with that below the critical temperature Tc of the superconductor. It can be observed that at frequencies below the gap frequency fg, the low in the superconducting CPW is significantly lower than that in a normal CPW. Above fg, however, the material loses its superconductivity and the loss in both temperatures becomes comparable. In our analysi, we have also shown that the loss decreases as the gap bewteen the strip and groundplane becomes wider. Hence, with careful design, the loss in a CPW can actually be minimized.
Fabrication and process development for an integrated optical MEMS microsystem in indium phosphide

Title of Document: FABRICATION AND PROCESS DEVELOPMENT FOR AN INTEGRATED OPTICAL MEMS MICROSYSTEM IN INDIUM PHOSPHIDE Nathan Paul Siwak, Doctor of Philosophy, 2013 Directed By: Professor Reza Ghodssi, Department of Electrical and Computer Engineering, Institute for Systems Research This dissertation presents the design, fabrication, and evaluation of the first monolithically integrated MEMS resonant sensor syst em realized in the InP-InGaAs material family. The integration of a MEMS sensor along with the facilitating optical interrogation platform provides for increased manuf cturing scalability, sensitivity, and reduced measurement noise and device cost. The MEMS device presented in this dissertation consists of an Indium Phosphide (InP) cantilever waveguide resonator whose displacement is measured optically via a vert ically integrated laser diode and waveguide photodetector. All three major component s of the sensor were integrated in a single 7.1 μm thick molecular beam epitaxy (MB E) epitaxial growth, lattice matched to an InP substrate. Full fabrication of t he integrated MEMS device utilizes 7 projection lithography masks, 4 nested inductivel y coupled plasma (ICP) etches, and over 60 discrete processing steps. This disser tation focuses on the integration design and the development of specific III-V semico nductor fabrication processes in order to completely fabricate and realize these dev ices, including specialized ICP etching steps and a MEMS undercutting release etch. The fabricated devices were tested and characterized by investigating the separ ate component subsystems as well as the total combined system performance. Investig ation of device failure and performance degradation is performed and related to non-idealities in the device fabrication and design. A discussion of future wor k to improve the performance of the system is presented. The work in this dissertat ion describing the successful fabrication process and analysis of such a complex system is a milestone for III-V based optical MEMS research and will serve as the g roundwork for future research in the area of optical MEMS microsystems. FABRICATION AND PROCESS DEVELOPMENT FOR AN INTEGRAT ED OPTICAL MEMS MICROSYSTEM IN INDIUM PHOSPHIDE
Conclusion of the He Spill Simulations in the LHC Tunnel

The LHC, currently under construction at CERN, will make use of superconducting magnets operating in super‐fluid helium below 2 K provided via a separate cryogenic distribution line. An accidental spill of part of the helium inventory (approx. 12 tons per octant of 3.3‐km length each) in the 3.8‐m diameter underground tunnel is a potential risk to personnel i.e. lack of visibility, cold, lack of oxygen. Using a finite volume model of a 100‐m long typical tunnel section, several scenarios with different leak rates and temperatures were simulated. Further parameters considered were ventilation rate, slope of the tunnel, helium leak temperature, etc. in order to point out the most critical factors influencing temperature and helium concentration distribution in the tunnel. Finally, this analysis allowed us to determine a maximum mass flow that can be released in the tunnel without putting personnel at risk.
What Is 'Technology'?

Patent protection is limited to “technology,” but technology is so difficult to define that the Supreme Court has taken up the issue several times in the last several years. The Supreme Court’s recent decisions in Bilski, Prometheus, and Myriad have left patentable subject matter doctrine just as confused as ever, however. What is patentable technology? The answer turns out to have nothing to do with the various pragmatic rationales that courts commonly cite. Rather, the patent system has defined patentable technology according to much simpler criteria – artifice and action. Artifice is the quality of being created by humans, not by nature. Action is the quality of behaving or operating in some active way. Together, artifice plus action explain and, perhaps more importantly, unify the law on patentable subject matter. By focusing on artifice plus action as the primary criteria defining patentable technology, the patent system can provide clearer guidelines than it has been able to achieve thus far.
Evolution of Yeast Respiro-Fermentative Lifestyle and the Underlying Mechanisms Behind Aerobic Fermentation

Under aerobic conditions, most yeasts such as Kluyveromyces lactis, prefer the respiratory pathway and some, such as Saccharomyces cerevisiae prefer less energy efficient fermentative pathway for their energy metabolism. These two metabolic strategies are also known as Crabtree negative and Crabtree positive respectively, and the evolution of the latter has lately been explained by the “make-accumulate-consume” life strategy. Scientists have for more than a century tried to elucidate the mechanism behind the physiology and the evolution of the peculiar respiro-fermentation trait. During the last decades, comparative genomics approaches have enabled the reconstruction of the evolutionary history of yeast, and several evolutionary events have been identified and postulated to have contributed to the development of the respiro-fermentative lifestyle in the Saccharomyces lineage. However, many of these inspiring studies have been verified with reference species only. Therefore, as parts of my thesis I conducted large-scale physiology studies of more than 40 yeast species and their central carbon metabolism under controlled conditions, in bioreactors. This was done in order to map the evolution of aerobic fermentation in yeast belonging to the Saccharomyces lineage that span over 200 million years of yeast evolution. This evolutionary blueprint, which most likely will be an invaluable information source of primary data for future in silico studies on the evolution of Crabtree effect, has already verified the importance of evolutionary events, such as promoter rewiring, chromatin relaxation, whole genome duplication, gene duplication and lateral gene-transfers. I further propose a mechanism that provides an explanation for the origin of the respiro-fermentative lifestyle in yeast, and how this was subsequently, through a multistep process developed into the Crabtree effect as we know it in the modern yeasts today, such as S. cerevisiae and its sister species.
Human factors Issues in air traffic control under free flight

This paper expands Langan-Fox, Sankey, and Canty’s (2008) examination of the phenomenal growth in air traffic by discussing the human factors (HF) issues confronting air traffic controllers (ATCOs). Growing worldwide air traffic demands call for a radical departure from current air traffic control (ATC) systems (see Langan-Fox, Canty, & Sankey, 2009). Future systems will conceivably have a fundamental impact on the roles and responsibilities of ATCOs. Valid and reliable methods of assessing HF issues associated with these changes are crucial for advancing theory and for designing systems, procedures and training. We outline major aviation changes and how these relate to five key HF issues in ATC: (a) situation awareness; (b) workload; (c) boredom, vigilance, and monotony; (d) motivation and stress; and (e) trust, complacency, and over-reliance. A review of the literature suggests that situational awareness and workload have been widely researched and assessed using a variety of measures, whereas issues of stress, trust and boredom are predicted to become more significant. Researchers should develop measures to assess these concerns and their impact on ATCO performance. The current paper provides an evaluation of research and measures used in HF research on ATC systems which will facilitate future research and ATC measurement.
The actuated Workbench : 2D actuation in tabletop tangible interfaces

The Actuated Workbench is a new actuation mechanism that uses magnetic forces to control the two-dimensional movement of physical objects on flat surfaces. This mechanism is intended for use with existing tabletop Tangible User Interfaces, providing computer-controlled movement of the physical objects on the table, and creating an additional feedback layer for Human Computer Interaction (HCI). Use of this actuation technique makes possible new kinds of physical interactions with tabletop interfaces, and allows the computer to maintain consistency between the physical and digital states of data objects in the interface. This thesis focuses on the design and implementation of the actuation mechanism as an enabling technology, introduces new techniques for motion control, and discusses practical and theoretical implications of computer-controlled movement of physical objects in tabletop tangible interfaces. Thesis Supervisor: Hiroshi Ishii Title: Associate Professor of Media Arts and Sciences The Actuated Workbench: 2D Actuation in Tabletop Tangible Interfaces Gian Antonio Pangaro
COVID-19 and Its Implications on Social Engagement, Physical Activity, and Psychological Well-Being for Older Adults with Alzheimer’s Disease: A Systematic Review

Introduction: The coronavirus disease 2019 (COVID-19) pandemic has drastically disrupted daily routines, imposing rules such as social distancing and isolation that limit flexibility in one’s social environment. These restrictions may spur the rate of cognitive decline in older adults, increasing the risk of Alzheimer’s disease (AD) and exacerbating symptoms such as memory loss, impaired spatial awareness and language. These mandates may also hinder physical activity engagement, further increasing the risk of mental health problems and accelerating cognitive decline. As social interaction and physical activity form components of cognitive reserve, older adults may now face a higher risk of AD and faster AD progression. This paper will review the literature examining how the COVID-19 pandemic has affected the rate of cognitive decline in older adults in terms of AD pathology in three domains: social, physical, and psychological factors. Methods: This systematic review summarizes the literature examining the relationship between social engagement, physical activity, and psychological well-being on cognitive decline in older adults. Electronic databases (PubMed, ScienceDirect, Web of Science, Google Scholar, and PsycINFO) were searched with the following keywords: “COVID-19, social isolation, Alzheimer’s, cognitive decline, physical activity, social, psychological”. Results: Social engagement and physical activity can reduce the rate of cognitive decline and decrease the risk of AD and other dementias. Given that social, physical, and psychological factors have been impacted by pandemic restrictions, studies show this may result in greater cognitive decline in the years to follow. This is exacerbated due to the comorbidity between psychological distress and AD symptoms. Discussion: The results of this study can be further explored to develop an intervention that can mitigate the negative effects of pandemic restrictions in individuals with AD. Overall, preventative strategies targeting factors of cognitive reserve should be urgently implemented for disadvantaged populations with a focus on older adults. Conclusion: Clarifying the relationship between the COVID-19 restrictions and its effects on cognitive decline in AD will improve the health and well-being of older adults in the present and future. Understanding these effects on cognitive decline in AD has broader implications regarding individual responses to COVID-19 restrictions, and its associations with social engagement, physical activity, and psychiatric disorders in aging.
Neural Response to High and Low Energy Food Images in Anorexia Nervosa

To compare neural responses to high and low-energy food images in patients with Anorexia Nervosa (AN) and an age-matched Healthy Control (HC) group. 25 adolescents with AN and 21 HCs completed a diagnostic interview, self-report questionnaires and fMRI, during which they viewed food images evoking responses of disgust, happiness, or fear. Following whole brain analyses, neural responses in six regions of interest were examined in a series of between-group contrasts, across the three emotive categories. Compared to the HCs, people in the AN group showed increased responsivity to high-energy (1) disgust images in temporal lobe, frontal lobe, insula, and cerebellum anterior lobe; (2) fear images in occipital lobe, temporal, and frontal lobes and (3) happy images in frontal lobe, cerebellum anterior lobe, sub-lobar, and cuneus. More activity was observed in response to low-energy (1) disgust food images in the temporal lobe, frontal lobe, insula, cerebellum anterior and posterior lobes, parietal lobe, occipital lobe, and limbic lobe; (2) and happy food images in frontal lobes. Few correlations were found with levels of eating disorder symptoms. The findings highlight the emotional impact of diverse high and low-energy foods for people with AN. People without AN may have a better capacity to filter salient from non-salient information relating to the current task when viewing high energy foods. In summary, for those with AN, it would seem their ability to efficiently ‘sort-out’ information (especially information pertaining to disorder-relevant stimuli such as food images) to complete the task at hand, may be diminished.
Mitigation of Lower Order Harmonics in a Grid-Connected Single-Phase PV Inverter

A simple single-phase grid-connected photovoltaic (PV) inverter topology consisting of a boost section, a low-voltage single-phase inverter with an inductive filter, and a step-up transformer interfacing the grid is considered. Ideally, this topology will not inject any lower order harmonics into the grid due to high-frequency pulse width modulation operation. The no ideal factors in the system such as core saturation-induced distorted magnetizing current of the transformer and the dead time of the inverter, etc., contribute to a significant amount of lower order harmonics in the grid current.
In‐service parameters from façade rendering mortars: Bulk density and open porosity determined from samples collected in situ

Purpose – The purpose of this paper is to analyse two parameters relevant to the physical‐mechanical performance of external renders, mainly, bulk density and apparent or open porosity, by performing laboratory tests on samples collected under real in‐service conditions.Design/methodology/approach – The test procedure (sample preparation and techniques used) and its relationship with the overall performance characteristics and with any anomalies are discussed for each parameter. The analysis of the results covers seven case studies and 15 walls with renders made on site (cementitious and cement‐lime based) and non‐traditional or pre‐mixed renders.Findings – It was concluded that reliable relationships could be established between the test results and other physical parameters relevant to the mechanical and water‐related behaviour of different types of cementitious renders. Notwithstanding the usual drawbacks of laboratory tests (more time‐consuming, higher costs and greater destruction of the walls), the .