Miracle-dz/UniFAR-FTUs huggingface dataset:
Integration of Improved Flux Linkage Observer and I–f Starting Method for Wide-Speed-Range Sensorless SPMSM Drives

This article aims to improve the sensorless control performance of surface-mounted permanent magnet synchronous machine drives in the whole speed range. Based on the thought of speed partition optimization and smooth transition, a hybrid sensorless control strategy integrating with an improved flux linkage observer and the current–frequency (I–f) starting method is proposed. At zero–low speed, the I–f control method is utilized for the stable startup and strong antijamming capability. At medium–high speed, an improved flux linkage observer based on the sliding-mode compensator is designed for the closed-loop sensorless operation. Taking advantage of the sliding-mode compensator, not only the position estimation errors caused by the adopted filter can be compensated effectively without any speed iteration to improve the system stability, but also the suitable cutoff frequency of the filter can be selected for the fast system dynamic response. Meanwhile, the influence of machine parameter variations on the rotor-position estimation accuracy is discussed. Furthermore, in order to achieve the smooth operation between two different control schemes, an adaptive transition algorithm is described in detail. Experimental results indicate that the proposed hybrid sensorless control strategy can show an excellent performance for both steady-state and dynamic operations during full-speed range.
Early Observations of the Interstellar Comet 2I/Borisov

2I/Borisov is the second ever interstellar object (ISO). It is very different from the first ISO ’Oumuamua by showing cometary activities, and hence provides a unique opportunity to study comets that are formed around other stars. Here we present early imaging and spectroscopic follow-ups to study its properties, which reveal an (up to) 5.9 km comet with an extended coma and a short tail. Our spectroscopic data do not reveal any emission lines between 4000–9000 Angstrom; nevertheless, we are able to put an upper limit on the flux of the C2 emission line, suggesting modest cometary activities at early epochs. These properties are similar to comets in the solar system, and suggest that 2I/Borisov—while from another star—is not too different from its solar siblings.
Femoral Arteriovenous Grafts for Hemodialysis: Retrospective Comparison With Upper Extremity Grafts and Fistulas

Background: Femoral arteriovenous grafts are rarely used to provide vascular access for dialysis patients. This is likely due, in part, to historically high rates of graft loss from infection and thrombosis. However, for selected patients who have exhausted all access options in the upper extremity, femoral grafts can provide additional sites for access creation and may be preferred over central venous catheters. Objective: We sought to demonstrate that femoral grafts can provide a reliable and safe alternative to central venous catheters for selected patients. Methods: A single-center retrospective review in Vancouver, Canada, from April 1, 2008, to March 31, 2012, was conducted. All patients with new arteriovenous access (grafts and fistulas) created during the study period were included in the study population and followed for a minimum of 2 years. Comparisons of patency (primary, secondary, and functional) and complications (infectious and noninfectious) were made between the different access types. Results: Thirteen patients with femoral grafts were compared with 22 patients with arm grafts and 384 patients with fistulas. Femoral grafts had higher rates of thrombosis (46% with a thrombotic event) and a higher requirement for interventions (1.3 angioplasties and 0.12 thrombolytic procedures per patient per year). However, compared with arm grafts, femoral grafts had superior secondary and functional patency. No difference in patency was seen when comparing femoral grafts with upper extremity fistulas. Only 2 patients with femoral grafts required antibiotics for infection, and no grafts were lost to infection. Conclusions: For patients with limited access options remaining, femoral grafts may provide an additional form of vascular access before resorting to catheter use. Our study shows that with appropriate patient selection, femoral grafts have low infection rates and patency that is comparable with other access types.
Asset based community development to promote healthy aging in a rural context in Western Canada: notes from the field

ABSTRACT Working from an asset-based perspective, this exploratory, qualitative study examined local community strengths and capacities to support healthy aging in a rural community in Western Canada. The research team consisted of academic leads and a project coordinator from a Canadian university, collaborating partners from the health authority, representatives from local and regional municipal leadership, and an Advisory Committee comprising local municipal leaders, seniors’ advocates, business owners, health care professionals and other community stakeholders. The findings from this study underscore five equally critical and overlapping areas of recommendations: Networking and Cross-Community Collaborations; Communications; Health and Social Care Initiatives; Transportation; and Housing.
Empirical Evaluation on the Localization Accuracy of Visual Odometry on the Gratings for PCV Internal Investigation

As one part of the decommission tasks of Fukushima nuclear power plant, efficient and appropriate operation of removal of fuel debris requires essential information of distribution and characteristics of fuel debris. A robotic remote measurement system using an ultrasonic sensor called RhinoUS was developed to detect the distribution of the fuel debris and localize the unknown water leakages in the primary containment vessels (PCV) of the No.1 reactor. Experiments are carried out to evaluate the localization accuracy on the robot pose of the visual odometry method. The results turn out that we could acquire characteristics of the fuel debris and achieved localization error less than 15mm/1m in complex motion, and generate smooth grating map in bird view. We conclude that the visual odometry localization method might serve as a feasible solution to assist the robot localization on grating.
Voices of Refugee Women: Adaptation and Identification

ABSTRACT Refugees and other displaced people have been the object of much research related to how people are adapting. Few have focused specifically on women even though women and children are by far the majority of refugees in general and especially in Utah. One of the few focused on narratives of newly arrived women refugees. Narratives are an important method for hearing authentic lived experiences versus assuming researchers can know the answers. However, questions arose about how those narratives might change after being in the U.S. for a longer period of time. Eleven refugee women who had been in the U.S. longer than 10 years were interviewed for this study. Narratives allowed us to present this scholarship in a way that is accessible to anyone. Five themes were found: language, education, family, assistance, and transition. These themes demonstrate both the resilience of the women and the difficulty and complexity of long-term adaptation.
Cloud-Based Industrial Cyber–Physical System for Data-Driven Reasoning: A Review and Use Case on an Industry 4.0 Pilot Line

Nowadays, reconfiguration and adaptation by means of optimal re-parameterization in Industrial Cyber–Physical Systems (ICPSs) is one of the bottlenecks for the digital transformation of the manufacturing industry. This article proposes a cloud-to-edge-based ICPS equipped with machine learning techniques. The proposed reasoning module includes a learning procedure based on two reinforcement learning techniques, running in parallel, for updating both the data-conditioning and processing strategy and the prediction model. The presented solution distributes computational resources and analytic engines in multiple layers and independent modules, increasing the smartness and the autonomy for monitoring and control the behavior at the shop floor level. The suitability of the proposed solution, evaluated in a pilot line, is endorsed by fast time response (i.e., 0.01 s at the edge level) and the appropriate setting of optimal operational parameters for guaranteeing the desired quality surface roughness during macro- and micro-milling operations.
‘How do I choose?’: mathematics teachers’ sensemaking about pedagogical responsibility

ABSTRACT Teachers’ decisions are often undergirded by their sense of pedagogical responsibility: whom and what they feel beholden to. However, research on teacher sensemaking has rarely examined how teachers reason about their pedagogical responsibilities. The study analysed an emotional conversation among urban mathematics teachers about what they teach mathematics for, given the many non-mathematical challenges they and their students face. The familiarity and simplicity of love and life skills narratives deployed to describe what it means to be a good teacher and to do good teaching may be comforting, but limit teachers’ engagement with other authentic forms of pedagogical reasoning about their pedagogical responsibility in complex sociopolitical contexts. The findings reveal the importance of opportunities to explore alternate possibilities ‘for what,’ especially within structured and supportive teacher collaborative groups.
Ontogenetic changes in the ventral colouration of post metamorphic Elachistocleis haroi Pereyra, Akmentins, Laufer, Vaira, 2013 (Anura: Microhylidae)

Ontogenetic colour change (OCC) is defined as the progressive and non-reversible process of changes in colouration of organisms associated with their development. Among the many vertebrate groups, amphibians are particularly impressive for their strikingly wide variety of colours, colour patterns, and signals, whose evolutionary and ecological significance have been poorly studied. Elachistocleis comprises 18 species currently separated into two main groups based on their ventral colour pattern: one immaculate and the other with specks and/or colour patches. Elachistocleis haroi is a small-sized species within the immaculate venter group, distributed in the Yungas and Dry Chaco ecoregions from which little information is known. In a comprehensive sampling of post-metamorphic individuals of E. haroi at different stages of development we identified a significant variation in ventral colour pattern, which could denote a progressive filling of yellow colour according to an ontogenetic pattern. To test this hypothesis, we analysed 39 post-metamorphic individuals of E. haroi at different stages of development with imaging procedures. We found that yellow spots and their intensity are significantly related to snout-vent length, as major expansion of colour on the sides, gular region and male chest, as almost no development on the belly. We briefly discuss our findings in relation to sexual display and predation avoidance. To our knowledge, this is the first analysis of post-metamorphic OCC in ventral colouration in the genus Elachistocleis.
The turbulent Faraday instability in miscible fluids

Experiments of a turbulent mixing zone created by the Faraday instability at the statically stable interface between salt and fresh water are presented. The two-layer system, contained in a cuboidal tank of large dimensions, is accelerated vertically and periodically at various frequencies and amplitudes for three different density contrasts. We have developed a linear approach accounting for the full inhomogeneous and viscous problem, that is applied to a linear piecewise background density profile, and recovers the limiting cases of interface and homogeneous turbulence with a fully developed mixing layer. At onset, the wavelength of the most amplified modes and the corresponding Floquet exponent of the interface both verify our predictions. The dynamics is rather different when the instability is triggered from a sharp or diffuse interface: in the latter case, a change of characteristic wavelengths can be observed experimentally and explained by the theory. In the turbulent regime, the time evolution of the mixing zone size $L(t)$ for various experimental configurations compares well with confined direct numerical simulations. For some initial conditions, a short harmonic response of the instability is observed before the usual subharmonic one. Finally, the ultimate size of the mixing layer $L_{end}$, measured with a probe after the saturation of the instability and end of the forcing, is in excellent agreement with the recent theoretical prediction $L_{sat}=2{\mathcal{A}}g_{0}(2F+4)/\unicode[STIX]{x1D714}^{2}$, where $g_{0}$ is the gravitational acceleration, ${\mathcal{A}}$ the Atwood number, $\unicode[STIX]{x1D714}/2\unicode[STIX]{x03C0}$ the frequency and $F$ the acceleration ratio.
ELECTROPUNCTURE IN NON-SPECIFIC NECK PAIN: A PILOT STUDY

The aim of the study was to evaluate the effect of electropuncture, i.e. the stimulation of acupuncture points by TENS electrotherapy, on non-specific neck pain and the associated symptoms regularly reported. 16 participants, 10 female and 6 male, completed the study. A TENS machine with a point electrode was used to stimulate a selection of acupuncture points. The primary outcome measure was the intensity of neck pain as measured by changes in scores on pain VAS, the secondary measure was the degree of the associated symptoms regularly reported such as headaches, restriction in daily activities, stress, troubled sleep and general health satisfaction. The results showed that participants who received 3 treatments over 8-14 days experienced a significant short-term reduction in neck pain and restriction in daily activities immediately after the treatment and at 1-month post-intervention follow-up. Our findings also show improvement in the intensity of headaches, degree of stress, quality of sleep and general health satisfaction but the changes were not statistically significant. The present pilot study suggests that stimulation of acupuncture points by the means of TENS electrotherapy may effectively reduce neck pain.
Reactive power sharing control for islanded AC microgrid based on fuzzy adaptive compensation method

Due to reactive power irrational sharing issue resulting from the mismatched line impedances and unbalanced local loads of the inverters, the hierarchical coordination control strategy based on fuzzy adaptive compensation is designed to improve the accuracy of the reactive power sharing in the islanded AC microgrid. Firstly, in the local controller, the total active power and the average reactive power are obtained by the initial power sharing stage and the secondary power sharing stage, respectively. Then, in the power balancing stage, the average reactive power as the input of the fuzzy control can be used to adaptively adjust the voltage reference value in real time, so the rational sharing of reactive power may be achieved by using the designed control strategy. Furthermore, based on the classification of load fluctuation, the coordinated operation strategy is designed to deal with reactive power sharing for different load fluctuation conditions. Noteworthy, only the low-bandwidth synchronisation signal from the central controller is used to the hierarchical control strategy, which can maintain characteristic of plug-and-play in the microgrid. Simulation and experiment results are presented to validate the effectiveness of the proposed strategy.
Evolution of uncontrolled severe asthma under Omalizumab and specialized care unit treatment.

Severe uncontrolled asthma is a disabling and life-threatening disorder. This article evaluates the effectiveness of combining a specialized care clinic treatment with the prescription of Omalizumab (OML) when treating these patients. We analyzed 45 patients with severe uncontrolled asthma followed for 12 months, of which 30 had elevated levels of IgE and received omalizumab dose adjusted for weight and IgE levels. The overall effectiveness was measured through parameters such as emergency room visits (ER), the evolution of forced expiratory volume in one second (FEV1), the need for high-dose corticosteroids; Fractional exhaled nitric oxide (FENO) and a quality of life survey. At three, six and twelve months, all patients improved significantly in all measured parameters (p<0.05), except FENO, as a result of their treatment in the specialist office. The changes were even more favorable for patients who received OML in addition to the visits to the specialized care clinic, showing a significant interaction between drug use and clinical visit factors. Our results confirm that the benefits obtained in randomized clinical trials with OML and the specialist care of patients with severe asthma result in a significant clinical benefit in the context of everyday clinical practice.
Characterization of Signal Transduction Abnormalities Revealed Spleen Tyrosine Kinase as a Therapeutic Target in High-risk Precursor B Cell Acute Lymphoblastic Leukemia

Currently, the intensive chemotherapy remains the first line treatment for B cell acute lymphoblastic leukemia (B-ALL). Although these regimens have significantly improved patient outcomes, their use is associated with debilitating morbidities and fatal relapses, highlighting the great need in new agents that target essential survival signals in leukemia. Thus, the overall goal of my project was to gain insights into the signaling abnormalities that regulate aberrant proliferation and survival of B-ALL cells in an effort to identify novel targets in this malignancy. This study demonstrated that pre-B cell receptor (pre-BCR)-independent spleen tyrosine kinase (SYK) activity was required for the survival and proliferation of a p53 -/Prkdc SCID/SCID mouse model of B-ALL. I extended this discovery to human disease, demonstrating that SYK was activated in primary B-ALL, independent of the pre-BCR expression. The small molecule SYK inhibitor fostamatinib (fosta) significantly attenuated proliferation of 79 primary diagnostic B-ALL samples at clinically achievable concentrations. Importantly, fosta treatment reduced dissemination of engrafting B-ALL cells into the spleen, liver, kidney and central nervous system (CNS) in a NOD.Prkdc scid/scid Il2rg tm1Wjl /SzJ xenotransplant model of B-ALL. Analysis of signaling abnormalities using a high-throughput phospho-flow cytometry platform demonstrated that pediatric and adult B-ALL samples exhibit variable basal activation of BCR, iii PI3K/AKT/mTOR, MAPK and JAK/STAT pathways. Importantly, we identified that fostamediated inhibition of SYK, PLC 2, CRKL and EIF4E phosphorylation in B-ALL was predictive of its anti-leukemic activity, and was distinct from the cellular actions of other small molecule inhibitors of key nodal signaling pathways. Examination of molecular mechanism of fosta action by gene expression profiling revealed transcriptional effects of fosta treatment that included, most notably, potent inhibition of pathways involved in lymphocyte activation and inflammation. In conclusion, this study demonstrates that SYK signaling is crucial for B-ALL survival and provides detailed characterization of cellular and molecular mechanisms of fosta action in B-ALL. These data argue in favor of testing small molecule SYK inhibitors in pediatric
Antibiotic sensitivity patterns of microbial isolates from fish ponds: A study in the Greater Accra Region of Ghana

Intensive use of antimicrobial agents in aquaculture provides a selective pressure creating reservoirs of drug-resistant bacteria and transferable resistance genes in fish pathogens and other bacteria in the aquatic environment. From these reservoirs, resistance genes may disseminate by horizontal gene transfer and reach human pathogens, or drug-resistant pathogens from the aquatic environment may reach humans directly. This study aims at identifying the antibiotic sensitivity patterns of Pseudomonas aeruginosa, Salmonella typhi, and Escherichia coli isolates from fish ponds in two localities (Ashiaman and Dawhenya) in the Greater Accra region of Ghana. A total of 43 isolates were tested using the Kirby-Bauer agar disc diffusion method against Ciprofloxacin (5 µg), Erythromycin (15 µg), Cefuroxime (30 µg), Gentamicin (10 µg), and Tetracycline (30 µg). P. aeruginosa was the most isolated organism with 90% prevalence, followed by E. coli (75%) and S. typhi (50%). All the P. aeruginosa isolates were resistant to Erythromycin and Cefuroxime while 90% of the S. typhi isolates were resistant to Tetracycline and Erythromycin. E. coli isolates showed 100, 93.33 and 66.66% resistance to Erythromycin, Cefuroxime and Tetracycline respectively. Gentamicin, Tetracycline and Ciprofloxacin were sensitive to 66.66, 61.10 and 50% of P. aeruginosa isolates respectively. Ciprofloxacin was sensitive to 90% of the S. typhi isolates whiles Gentamicin was sensitive to 70% of the S. typhi isolates. Ciprofloxacin and Gentamicin were more sensitive to E. coli isolates (80 and 66.66% sensitivity respectively). Multi-drug resistant strains were obtained in 77.78% of P. aeruginosa and 70% of S. typhi isolates whiles 66.67% of E. coli isolates were also resistant to more than two classes of the antibiotics tested. High levels of microbial resistance were observed in the isolates with 72.09% of isolates being multidrug resistant strains. Key words: Resistance patterns, multi-drug resistance, fish ponds, antibiotics.
Academic Stressors as Predictors of Achievement Goal Orientations of American and ESL International Students

This study explores academic stressors and achievement goal orientations of college students, and the relationship between these variables using academic stressors as predictors. As the number of English as a Second Language (ESL) international students has increased rapidly in the US, students’ status (American or ESL international) was also examined. A total of 715 students participated in the study from two universities in the US. Results show that ESL international and American students have different achievement goal orientations and academic stressors. Additionally, student status and academic stressors predict college students’ various goal orientations. The implications provide useful suggestions to higher education professionals in order to better understand and assist diverse students to succeed in academia.
Investigation of collision warning possibilities by means of GNSS receivers of Android smartphones

Using of raw GNSS measurements in Andoid smartphones for precise mututal positioning of vehicles on a road is considered in the Paper. Field experiments with two moving vehicles and pedestrian were conducted. 15 kinds of general maneuvers were provided (overtaking, turn, oncoming traffic, etc.). Smartphone measurements were logged and post-processed to get mutual positioning estimations during maneuvering. Smartphone estimations were compared with precision GNSS receivers measurements.
Data-driven Begins with DATA; Potential of Data Assets

ABSTRACT The objective of this study is to analyze the potential of company data assets for data-driven, fact-based decision-making in product portfolio management (PPM). Data assets are categorized from the PPM standpoint, including (product/customer/ …) master data, transactional data, and interaction data (e.g., IoT data). The study combines literature review and qualitative analysis of eight international companies. The findings underline the crucial role of corporate-widely combined and governed data model. Company business IT is adjusted against the corporate-level data model. The order of importance is data first, and the technology second. The data-driven mind-set and culture creation are also important. The implications include understanding the role and potential of combined data assets that form the basis for data-driven PPM. Facts based on company data assets are essential for decision-making instead of “gut feeling” and emotions. The utilization of the unused potential of data assets is promoted in the transformation toward data-driven PPM.