Miracle-dz/UniFAR-FTUs huggingface dataset:
An Inverse Dynamics Algorithm for Multiple Flexible-Link Manipulators

It is well known that a system of cooperating manipulators is redundantly actuated. This property can be used to actively distribute the loads within the system to achieve better performance. In this paper, the authors formulate and solve the force distribution problem for multiarm systems with flexible-link arms, with particular attention to the nonminimum phase character of the system. The solution is attained by optimization where objective functions include the weighted norm of actuator torques, weighted norm of elastic acceler ations, and their combinations. The numerical example shows that the proposed force distribution schemes are effective in stabilizing the system vibrations.
Strain-induced electronic energy changes in multilayered InGaAs/GaAs quantum wire structures

Electronic states of layered InGaAs∕GaAs(001) quantum wire and quantum dot chain structures have been investigated by electroreflectance and surface photovoltage spectroscopy. Band-gap shrinkage and heavy-hole/light-hole state splitting have been observed in the GaAs barrier material. This can be understood by shear strain existing in the GaAs barrier due to strain relaxation and anisotropy within the wires or dot chains. By comparing the experimental results with theoretical calculations, we found that the strain relaxation in the direction perpendicular to the wires or the dot chains has a stronger effect on the heavy-hole–light-hole splitting than on band-gap modification in the InGaAs wires and dot chains. The piezoelectric field induced by the shear strain is also discussed.
Observer Path Design for Bearings-Only Localization with State Constraints

In bearings-only target localization, observer path have an important effect on the accuracy of target localization. Based on the analysis of Fisher information matrix, an optimal approach to designing observer path is proposed. Observer path derived from the step-by-step optimal algorithm only depends on observer's initial states and state constraints. The optimal path resulted with step-by-step algorithm is demonstrated by computer simulation. Compared with traditional methods, our algorithm is not limited to the number of observations as well as terminating conditions.
A New Compact Reconfigurable Patch Antenna for Polarization and Frequency Diversity

Abstract A new compact patch antenna with frequency and polarization diversity is presented and experimentally verified. Four double cross-slots are embedded into corners of a square patch, and the length of the slots are changed according to the ON/OFF states of the PIN diodes located on the slots. The compactness of this antenna is more than 36% in comparison to an ordinary dual-band square patch antenna.
A high-resolution study of Herbig-Haro objects 1 and 2

Observations have been conducted of Herbig-Haro objects 1 and 2 with high spectral and spatial resolution in order to test shock models for the line emission. A detailed bow shock model has been constructed which yields line widths and optical and UV spectra in reasonable agreement with observation for maximum shock velocities approximately 200 km/s. Such velocities are comparable to the transverse velocities of the knots in HH 1 and 2 inferred from proper motion studies. The observations suggest that HH objects are rapidly moving, dense clouds shocking with less dense interstellar medium. The large energy requirements of these objects, combined with their small apparent size as seen from the exciting star, seem to require unreasonably large stellar mass loss rates. However, it is possible that the HH objects subtended a much larger solid angle at the star when originally accelerated.
The predictors of new-onset atrial fibrillation incidence after on-pump coronary artery bypass graft surgery: A prospective study evaluating syntax score

Background: Atrial fibrillation (AF) is considered the most common supraventricular arrhythmia in patients undergoing coronary artery bypass graft (CABG). The predictive value of the SYNTAX score for post-CABG new-onset AF incidence has not been clearly evaluated. This study aimed to assess this association in patients undergoing isolated on-pump CABG. Method: This study was done in a single-center, randomized, and observational setting. A total of 133 patients undergoing on-pump isolated CABG who were older than 18 years and had sinus rhythm were enrolled. Demographic variables of patients were recorded, and the SYNTAX score was measured for the participants. The multivariate logistic regression model was applied to identify the predictors of post-CABG new-onset AF. Results: The logistic regression model showed that SYNTAX score of more than 28.25 (p-value= 0.001; OR= 14.25, 95% CI= 2.90_70.11), hypertension (p-value=0.02; OR = 6.59, 95% CI = 1.23_34.57), and calcium channel blocker consumption (p-value=0.02; OR = 8.05, 95% CI = 1.43_45.42) are predictors of new-onset AF after on-pump CABG. Conclusion: This study demonstrated that patients with higher SYNTAX scores in coronary angiography are more likely to develop new-onset AF after isolated on-pump CABG.
Chronic myelomonocytic leukemia in a 72-year-old male from Nepal: A case report

Introduction: Chronic myelomonocytic leukemia (CMML) is a rare disease of clonal hematopoietic stem cells with an inherent risk of leukemic transformation, seen in an elderly male. Case Presentation: Herein, the authors report a case of CMML in a 72-year-old male who presented with fever and abdominal pain for 2 days with a history of easy fatigability. Examination revealed pallor and palpable supraclavicular nodes. Investigations showed leukocytosis with a monocyte count of 22% of white blood cell count, 17% blast cells in bone marrow aspiration, increased blast/promonocytes, and positive markers in immunophenotyping. The patient is planned for injection of azacitidine, 7 days cycle for a total of six cycles. Clinical Discussion: CMML is classified as overlapping myelodysplastic/myeloproliferative neoplasms. It can be diagnosed based on a peripheral blood smear, bone marrow aspiration and biopsy, chromosomal analysis, and genetic tests. The commonly used treatment options are hypomethylating agents like azacitidine and decitabine, allogeneic hematopoietic stem cell transplant, and cytoreductive agents like hydroxyurea. Conclusion: Despite various treatment options, the treatment is still unsatisfactory, demanding standard management strategies.
Cardinal conditions for strong Fubini theorems

If K1, K2. , Kn are cardinals with K1 the cardinality of a nonmeasurable set, and for i = 2, 3, . , n Ki is the cardinality of a set of reals which is not the union of K1 1 measure-0 sets, then for any nonnegative function f: R n-* R all of the iterated integrals Ia = . f(xl X X2X . , xn)dxa(l) dxa(2) * dxa(n) a E Sn which exist are equal. If all n! of the integrals exist, then the weaker condition of the case n = 2 implies they are equal. These cardinal conditions are consistent with and independent of ZFC, and follow from the existence of a real-valued measure on the continuum. Other necessary conditions and sufficient conditions for the existence and equality of iterated integrals are also treated.
Reflection of electromagnetic plane waves in a long-wavelength approximation from a multilayer system of anisotropic transparent films on non-absorbing isotropic medium

The reflection of s- and p-polarised electromagnetic plane waves from an N-layer system of anisotropic dielectric films upon transparent homogeneous substrate is investigated in the long-wavelength approximation. The analytical expressions are obtained for the amplitude reflection (transmission) coefficients, reflectances (transmittances), and ellipsometric angles of an anisotropic multilayer thin-film system. All analytical results are in agreement with the numerical solution of the reflection problem for anisotropic stratified medium. The possibilities of using obtained expressions for resolving the inverse problem for ultrathin anisotropic films upon isotropic substrates are discussed.
Robust stability theorems for nonlinear predictive control

Robust exponential stability of full state and observer feedback controlled systems is explored in the context of predictive control. The total stability theorem is used to ensure exponential stability via bounds on model, modelling error and control gain characteristics in two scenarios of differing complexities. Sufficient conditions are obtained to ensure an observed, nonlinear plant's state trajectory stays within a fixed distance of an exponentially stable, controlled, model state trajectory. These results have applications in predictive control, where model-based receding-horizon designs are used to yield robust solutions on the infinite-horizon.
Gravitational microlensing by double stars and planetary systems

Almost all stars are in binary systems. When the separation between the two components is comparable to the Einstein ring radius corresponding to the combined mass of the binary acting as a gravitational lens, then an extra pair of images can be created, and the light curve of a lensed source becomes complicated. It is estimated that about 10 percent of all lensing episodes of the Galactic bulge stars will strongly display the binary nature of the lens. The effect is strong even if the companion is a planet. A massive search for microlensing of the Galactic bulge stars may lead to a discovery of the first extrasolar planetary systems. 27 refs.
Monte Carlo Calculation of Quantum Systems

Thermodynamic properties of non-relativistic quantum systems are treated by the Monte Carlo calculation of path integrals. This method can be applied to the N-body problem. For boson systems the importance sampling of permutation and coordinates is efficient. For fermion systems direct calculation of determinant of propagators is efficient to avoid the negative sign problem.
Postpartum Guillain–Barré syndrome: a case report

Introduction and Importance: Guillain–Barré syndrome (GBS) is an immune-mediated disorder of the central nervous system presenting as symmetrical, progressive weakness and areflexia. The incidence of GBS is very low during pregnancy, but the risk increases in the postpartum period. The management is done by intravenous immunoglobulin or conservatively. Case Presentation: Case of 27 years female with parity 1, living 1, on postpartum day 20 presented to the emergency department (ED) with weakness over legs and hands since 20 days following emergency lower segment cesarean section for her delivery. The weakness prevailed over the lower extremities and progressed to the upper extremities in 4–5 days, affecting her grip strength and ability to stand alone. No history of prior diarrheal or respiratory illness. Cerebrospinal fluid analysis revealed albuminocytologic dissociation. A nerve conduction study showed in-excitable bilateral radial, median, ulnar, and sural nerves. Intravenous immunoglobulin was administered at the rate of 0.4 g/kg once daily for 5 days. Patient was discharged after 2 weeks with regular physiotherapy follow-up. Conclusion: GBS in the postpartum period is very rare. There must be a high degree of suspicion among physicians for GBS if a pregnant female or a woman during her postpartum period presents with ascending muscle paralysis, even if there is no recent antecedent history of diarrheal episodes or respiratory illness. An early diagnosis with multidisciplinary supportive measures helps improve the prognosis for both the mother and the fetus.
The relationship of winter season North Atlantic blocking frequencies to extreme cold or dry spells in the ERA-40

Atmospheric blocking is an important source of low-frequency variability. We apply a blocking detection and tracking method to ERA-40 data for the Atlantic-European region to assess linkages to extreme events, that is, cold and dry spells in the extended winter season (November-April). The method is feature-oriented, identifies 500-hPa geopotential height maxima, and connects them with a next-neighbourhood search in time. The analysis reveals a statistically significant decrease of number of blocking events over the period of ERA-40.Winters with an increased number of blocking events are associated with negative temperature anomalies over Central to Eastern Europe and dryer conditions, whereas Southern Europe experiences warmer and wetter conditions during such episodes. Using extreme value statistics we show evidence that cold spells, and to some extent dry spells, are strongly associated with extremes in blocking frequency. The number of cold spell days increases with the duration of blocking events indicating that cold spells need time to establish during blocking events, thus return periods of cold spells are longer than those for blocking events. This behaviour is not found for the relation of dry spells with blocking events. Still, blocking episodes have a higher occurrence of dry spells than climatology.
Birth asphyxia related mortality in Northwest Ethiopia: A multi-centre cohort study

Background Birth asphyxia is the second leading cause of neonatal death in Ethiopia, next to preterm-associated infections. Understanding the causes of death in asphyxiated newborns will help to design appropriate care. This study identifies predictors of neonatal mortality in asphyxiated newborns in selected hospitals in Northwest Ethiopia. Methods An institution-based prospective cohort study of 480 newborns with birth asphyxia was conducted at Debre Markos Comprehensive Specialized Hospital, Shegaw Motta District Hospital, and Injibara General Hospital. All newborns with asphyxia admitted to the neonatal critical care unit from the first of November 2018 to the first of November 2019 were included. Data were obtained prospectively from mothers using an interviewer’s administered questionnaire. The Kaplan-Meier survival curve was used to estimate survival time, and Log rank test was used to compare the survival curves. Bivariable and multivariable Cox proportional hazards models were fitted to identify the independent predictors of mortality in asphyxiated newborns. Adjusted hazard Ratios (AHRs) with 95% Cis (Confidence Intervals) were used to measure the strength of association and test statistical significance. Results The overall cumulative incidence of mortality among asphyxiated newborns was 42.29% (95% CI: 38%, 46). Asphyxiated neonates with other comorbidities (sepsis, neonatal anemia) (AHR = 2.63, 95% CI:1.69, 4.10), oxygen saturation of 50–69 (AHR = 4.62, 95% CI:2.55, 8.37), oxygen saturation of 70–89 (AHR = 2.82, 95% CI: 1.80, 4.42), severe Apgar score at one minute (AHR = 1.59, 95% CI:1.12, 2.25), neonates with Hypoxic Ischemic Encephalopathy (HIE) (AHR = 6.12, 95% CI:2.23, 16.75) were at higher risk of mortality. Conclusions The mortality rate among asphyxiated neonates remains high, and slightly higher than previous studies. Asphyxiated newborns with other comorbidities, severe Apgar score at one minute, who develop HIE, and low oxygen saturation were at higher risk of death. Therefore, designing appropriate interventions and prevention methods should be considered for identified variables.
Run, Ribosome, Run: From compromised translation to human health.

Significance Translation is an essential cellular process, and diverse signaling pathways have evolved to deal with problems arising during translation. Erroneous stalls and unresolved ribosome collisions are implicated in many pathologies including neurodegeneration and metabolic dysregulation. Recent Advances Many proteins involved in detection and clearance of stalled and collided ribosomes have been identified and studied in detail. Ribosome profiling techniques have revealed extensive and non-programmed ribosome stalling and leaky translation into the 3' untranslated regions of mRNAs. Impairment of protein synthesis has been linked to aging in yeast and mice. Critical Issues Ribosomes act as sensors of cellular states, but the molecular mechanisms, as well as physiological relevance, remain understudied. Most of our current knowledge stems from work in yeast and simple multicellular organisms such as C. elegans, while we are only beginning to comprehend the role of ribosome surveillance in higher organisms. As an example, the ribotoxic stress response, a pathway responding to global translational stress, has been studied mostly in response to small translation inhibitors and ribotoxins and has only recently been explored in physiological settings. This review focuses on ribosome surveillance pathways and their importance for cell and tissue homeostasis upon naturally occurring insults such as oxidative stress, nutrient deprivation, and viral infections. Future Directions A better insight into the physiological roles of ribosome surveillance pathways and their crosstalk could lead to an improved understanding of human pathologies and aging.
Wolf-Rayet galaxies - An introduction and a catalog

The first catalog of Wolf-Rayet galaxies is presented and discussed. These are a subset of emission-line galaxies in which a broad 4686 He II emission feature due to WR stars is observed in the integrated spectrum. About one-quarter of these galaxies also show a broad line at 4640 A due to N III which is prominent in the latest type WN stars. The number of Lyman-continuum photons emitted by WR galaxies scales roughly with their integrated magnitudes, similar to emission-line galaxies. Both WR galaxies and emission-line galaxies form an overlap with and luminous extension of giant H II regions in these properties. The fraction of WR stars to O stars in some of these galaxies appears to be large, which if confirmed by more detailed quantitative work would imply that the initial mass function was relatively 'flat'. 78 refs.
Children of immigrants: Racial assortative mating and the transition to adulthood

Few studies have followed immigrant-origin individuals from adolescence to adulthood or examined their spousal choices. Using longitudinal data from Add Health, we present a life-course model that examines the differences in racial assortative mating between children of immigrants and non-immigrants. The results reveal substantial variation in racial endogamy from generation to generation. Racial endogamy was highest in the third generation, but this is due entirely to high racial endogamy among whites. Out-marriage was most pronounced among first- and second-generation immigrants. Our life-course approach shows that the effects of race and generation on intermarriage were mediated by family background (e.g. language proficiency and residence) and educational attainment (at time of marriage), a finding largely indicative of processes of marital assimilation that unfold over time and generation. Evidence of acculturation and structural assimilation, however, could not fully account for the large, persistent, and uneven effects of race and generation on interracial marriage.
Utility of fractional excretion of urea nitrogen in heart failure patients with chronic kidney disease

Maintenance of euvolaemia with diuretics is critical in heart failure (HF) patients with chronic kidney disease (CKD); however, it is challenging because no reliable marker of volume status exists. Fractional excretion of urea nitrogen (FEUN) is a useful index of volume status in patients with renal failure. We aimed to examine whether FEUN is a surrogate marker of volume status for risk stratification in HF patients with CKD.
Burkholderia thailandensis Isolated from the Environment, United States

Burkholderia thailandensis, an opportunistic pathogen found in the environment, is a bacterium closely related to B. pseudomallei, the cause of melioidosis. Human B. thailandensis infections are uncommon. We isolated B. thailandensis from water in Texas and Puerto Rico and soil in Mississippi in the United States, demonstrating a potential public health risk.
The effect of fish oil supplementation on resistance training-induced adaptations

ABSTRACT Background Resistance exercise training (RET) is a common and well-established method to induce hypertrophy and improvement in strength. Interestingly, fish oil supplementation (FOS) may augment RET-induced adaptations. However, few studies have been conducted on young, healthy adults. Methods A randomized, placebo-controlled design was used to determine the effect of FOS, a concentrated source of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), compared to placebo (PL) on RET-induced adaptations following a 10-week RET program (3 days·week−1). Body composition was measured by dual-energy x-ray absorptiometry (LBM, fat mass [FM], percent body fat [%BF]) and strength was measured by 1-repetition maximum barbell back squat (1RMSQT) and bench press (1RMBP) at PRE (week 0) and POST (10 weeks). Supplement compliance was assessed via self-report and bottle collection every two weeks and via fatty acid dried blood spot collection at PRE and POST. An a priori α-level of 0.05 was used to determine statistical significance and Cohen’s d was used to quantify effect sizes (ES). Results Twenty-one of 28 male and female participants (FOS, n = 10 [4 withdrawals]; PL, n = 11 [3 withdrawals]) completed the 10-week progressive RET program and PRE/POST measurements. After 10-weeks, blood EPA+DHA substantially increased in the FOS group (+109.7%, p< .001) and did not change in the PL group (+1.3%, p = .938). Similar between-group changes in LBM (FOS: +3.4%, PL: +2.4%, p = .457), FM (FOS: −5.2%, PL: 0.0%, p = .092), and %BF (FOS: −5.9%, PL: −2.5%, p = .136) were observed, although, the between-group ES was considered large for FM (d = 0.84). Absolute and relative (kg·kg [body mass]−1) 1RMBP was significantly higher in the FOS group compared to PL (FOS: +17.7% vs. PL: +9.7%, p = .047; FOS: +17.6% vs. PL: +7.3%, p = .011; respectively), whereas absolute 1RMSQT was similar between conditions (FOS: +28.8% vs. PL: +20.5%, p = .191). Relative 1RMSQT was higher in the FOS group (FOS: +29.3% vs. PL: +17.9%, p = .045). Conclusions When combined with RET, FOS improves absolute and relative 1RM upper-body and relative 1RM lower-body strength to a greater extent than that observed in the PL group of young, recreationally trained adults.
PI3K/AKT/SERBP-1 pathway regulates Alisma orientalis beverage treatment of atherosclerosis in APOE−/− high-fat diet mice

Abstract Context Previously, we found Alisma orientalis beverage (AOB), a classic traditional Chinese medicine (TCM) formulation, had the potential effect of treating atherosclerosis (AS). The underlying mechanism was still unclear. Objective As an extention of our previous work, to investigate the underlying mechanism of action of AOB in the treatment for AS. Materials and methods Network pharmacology was conducted using SwissTargetPrediction, GeneCards, DrugBank, Metascape, etc., to construct component-target-pathway networks. In vivo, AS models were induced by a high-fat diet (HFD) for 8 consecutive weeks in APOE−/− mice. After the administration of AOB (3.8 g/kg, i.g.) for 8 weeks, we assessed the aortic plaque, four indicators of blood lipids, and expression of the PI3K/AKT/SREBP-1 pathway in liver. Results Network pharmacology showed that PI3K/AKT/SREBP-1 played a role in AOB’s treatment for AS (PI3K: degree = 18; AKT: degree = 17). Moreover, we found that the arterial plaque area and four indicators of blood lipids were all significantly reversed by AOB treatment in APOE−/− mice fed with HFD (plaque area reduced by about 37.75%). In addition, phosphorylated expression of PI3K/AKT and expression of SREBP-1 were obviously increased in APOE−/− mice fed with HFD, which were all improved by AOB (PI3K: 51.6%; AKT: 23.6%; SREBP-1: 40.0%). Conclusions AOB had therapeutic effects for AS by improving blood lipids and inhibition of the PI3K/AKT/SERBP-1 pathway in the liver. This study provides new ideas for the treatment of AS, as well as new evidence for the clinical application of AOB.