Miracle-dz/UniFAR-FTUs huggingface dataset:
Milli-Hertz Frequency Tuning Architecture Toward High Repeatable Micromachined Axi-Symmetry Gyroscopes

Axi-symmetry micro gyroscopes are increasingly popular for their ultrahigh measurement sensitivity. However, a side effect is the bias repeatability problem. In this article, we propose and demonstrate an ultraprecise frequency tuning solution to achieve state-of-the-art repeatability performance. The gyroscope dynamics are first analyzed and the major error source is confirmed as the frequency split. Then, an advanced frequency tracker and a precision tuning architecture are developed to improve the bias repeatability. The experimental results prove that the frequency tracker can identify the frequency splits at the mHz level. Consequently, a state-of-the-art turn-on to turn-on bias repeatability of 3.6°/h is conducted that shows orders of magnitude better than conventional solutions.
Production of calla lily grown in an NFT system

The objective of this study was to evaluate the production of calla lily in an NFT system. The experiment was carried out in a greenhouse, using a 2 x 2 factorial scheme in a completely randomized design (CRD), with fifteen replications. The treatments were a combination of two hydroponic profiles (100 and 150 mm of height) and two nutrient solutions. Calla lily plantlets obtained from rhizome buds in trays containing nutrient solution, were transferred to a laminar flow of nutrients, and the experiment lasted 12 months. The height of stems and inflorescences were evaluated, as well as the length and diameter of the inflorescence, the number of flowers per plant and number of flowers per m2 . Growing calla lily plants in an NFT system is feasible. The nutrient solution with the highest concentration of nutrients, particularly N and K, and the profile of 150 mm, are the most suitable for the production of calla lily as a cut flower in a laminar flow of nutrients.
Positive feedback regulation of frizzled-7 expression robustly shapes a steep Wnt gradient in Xenopus heart development, together with sFRP1 and heparan sulfate

Secreted molecules called morphogens govern tissue patterning in a concentration-dependent manner. However, it is still unclear how reproducible patterning can be achieved with diffusing molecules, especially when that patterning concerns differentiation of thin tissues. Wnt is a morphogen that organizes cardiac development. Wnt6 patterns cardiogenic mesoderm to induce differentiation of a thin tissue, the pericardium, in Xenopus. In this study, we revealed that a Wnt receptor, frizzled-7, is expressed in a Wnt-dependent manner. With a combination of experiments and mathematical modeling, this receptor-feedback appears essential to shape a steep gradient of Wnt signaling. In addition, computer simulation revealed that this feedback imparts robustness against variations of Wnt ligand production and allows the system to reach a steady state quickly. We also found that a Wnt antagonist sFRP1, which is expressed on the opposite side of the Wnt source, accumulates on N-acetyl-rich heparan sulfate (HS). N-acetyl-rich HS concentration is high between the sources of Wnt and sFRP1, achieving local inhibition of Wnt signaling via restriction of sFRP1 spreading. These integrated regulatory systems restrict the Wnt signaling range and ensure reproducible patterning of the thin pericardium.
A Novel Large Moment Antiferromagnetic Order in K 0.8 Fe 1.6 Se 2 Superconductor

The discovery of cuprate high TC superconductors has inspired the search for unconventional superconductors in magnetic materials. A successful recipe has been to suppress long-range order in a magnetic parent compound by doping or high pressure to drive the material towards a quantum critical point. We report an exception to this rule in the recently discovered potassium iron selenide. The superconducting composition is identified as the iron vacancy ordered K0.83(2)Fe1.64(1)Se2 with TC above 30 K. A novel large moment 3.31 ? B/Fe antiferromagnetic order that conforms to the tetragonal crystal symmetry has an unprecedentedly high ordering temperature TN ? 559 K for a bulk superconductor. Staggeringly polarized electronic density of states is thus suspected, which would stimulate further investigation into superconductivity in a strong spin-exchange field under new circumstances.
Evaluation of Non-Motor Symptoms in Wilson Disease Using the Parkinson's Disease Nonmotor Symptoms Questionnaire: A Pilot Cross-Sectional Study and Critical Assessment

Background: There is a dearth of studies on non-motor symptoms of Wilson's disease (WD) which is primarily because of the non-availability of a suitable scale. Objective: To assess the suitability of the Parkinson's Disease non motor symptoms questionnaire (PD-NMS Quest) in the assessment of non-motor symptoms of WD patients. Methods: In this case-control study, patients of WD above ≥12 years of age diagnosed by Leipzig's criteria and age and gender-matched control subjects were recruited. Critically ill patients, patients with severe hepatic impairment, or with pure hepatic WD were excluded. PD-NMS Quest was applied and relevant statistical analyses were performed. Results: A total of 18 cases and 25 controls were studied. Patients had a mean age of 22.6 years and a median disease duration of 8 years. WD patients had higher frequencies of all NMS than controls. Drooling (P = 0.0037), dysphagia or choking (P = 0.0088), nocturia (P = 0.0471), anxiety/fear (P = 0.0337), feeling sad or blue (P = 0.0020) and falling (P = 0.0197) were significantly higher in WD patients than controls. Conclusions: Although many NMS of WD patients are picked up effectively with PD-NMS Quest, some of them need detail assessment including cognitive, behavioral, and psychiatric symptoms, drooling and dysphagia, sleep as well as autonomic disturbances. Questions pertaining to sexual activity may be omitted from the questionnaire.
A spline-wavelet image decomposition for a difference engine

Using the concept of a Cardinal-Spline Multi-Resolution Analysis, we establish a means of generating a smoothed approximation of an input image. This approximation can be decoded and displayed in real-time at the video frame rate by the Diierence Engine: CWI's systolic array display processor. This forward diierence engine can rapidly compute the value of such a compact image representation across a span in constant time. Some results are given which connrm the suitability of the spline-wavelet transform as a means of producing a compact image code.
Subgrade soil evaluation using integrated seismic refraction tomography and geotechnical studies: A case of Ajaokuta-Anyigba Federal highway, North-Central Nigeria

ABSTRACT Integrated seismic refraction tomography (SRT) and geotechnical tests were conducted on failed and stable sections of the Ajaokuta – Anyigba Highway, North-central Nigeria. This study was aimed at characterising the soil profile, determining the competence of the subgrade soils, and establishing relationships between geophysical and geotechnical parameters. Primary wave velocities (Vp) were calculated by using SeisImager/2D (V.2.9.1). The subgrade soils of the unstable segment were characterised by low Vp (358–607 m/s) while higher Vp (762–1417 m/s) characterised the stable segment. The geotechnical results confirmed the seismic refraction results. Geotechnical results revealed that the subgrades of the unstable section are generally classified as A-6 and A-7-6 clayey soils, with low to high plasticity, and a fair to poor subgrade rating. While the subgrades of the stable section are grouped as A-2-4 silty sands with low compressibility and good to excellent subgrade ratings. Simple linear regression analysis showed fairly strong positive correlations between Vp and sand with CBR (r = 0.81 and 0.78, respectively). On the other hand, fairly strong negative correlations were obtained between Vp and the plasticity index with fines (r = −0.63 and −0.82 respectively).
A comparison of three load-velocity based methods to estimate maximum overhead press performance in weightlifters

This study aimed to evaluate whether lifting velocity can be used to estimate the overhead press one repetition maximum (1RM) and to explore the differences in the accuracy of the 1RM between three velocity-based methods. Twenty-seven weightlifters (16 men and 11 women) participated. The first session was used to test the overhead press 1RM. The second session consisted of an incremental loading test during the overhead press. The mean velocity was registered using a transducer attached to the barbell. A 1-way repeated-measures analysis of variance (ANOVA) with Bonferroni post hoc corrections was applied to the absolute differences between the actual and predicted 1RMs. Raw differences with 95% limits of agreement and ordinary least-products regressions were used to test the concurrent validity of the 1RM prediction methods with respect to the actual 1RM. The ANOVA did not reveal significant differences for the absolute differences respect to the actual 1RM between the three 1RM prediction methods (F = 3.2, p = .073). The absolute errors were moderate for the Multiple-Point (6.1 ± 3.7%), Two-Point45−75 (8.6 ± 6.2%), and Two-Point45−90 methods (5.7 ± 4.0%). The validity analysis showed that all the 1RM prediction methods underestimated the actual 1RM (1.0–2.2 kg), but ordinary least-products regressions failed to show fixed or proportional bias. These results suggest that the Multiple-Point and Two-Point45−90 velocity-based methods might be viable tools to predict the overhead press 1RM in weightlifters, but practitioners are encouraged to use the direct 1RM for a more accurate prescription of the training loads.
The Rotation Period Distribution of Pre-Main-Sequence Stars in and around the Orion Nebula

We report rotation periods for 254 stars in an area 40′ × 80′ centered on the Orion Nebula. We show that these stars are likely members of the young (∼106 yr) Orion OBIc/d association. The rotation period distribution we determine, which is sensitive to periods 0.1 < P < 8 days, shows a sharp cutoff for periods P < 0.5 days, corresponding to breakup velocity for these stars. Above 0.5 days the distribution is consistent with a uniform distribution; we do not find evidence for a "gap" of periods at 4–5 days. We find signatures of active accretion among stars at all periods; active accretion does not occur preferentially among slow rotators in our sample. We find no correlation between rotation period and near-IR signatures of circumstellar disks. In addition, we show that the distribution of v sin i among stars in our sample bears striking resemblance to that of low-mass Pleiades stars. We discuss the implications of our findings for the evolution of stellar angular momentum during the pre–main-sequence phase. We argue that all stars in our sample must still deplete angular momentum by factors of roughly 5–10, if they are to preserve their v sin i distribution over approximately the next 100 Myr. We consider in detail whether our findings are consistent with disk-regulated stellar rotation. We do not find observational evidence that magnetic disk-locking is the dominant mechanism in angular momentum evolution during the pre–main-sequence phase.
Effectiveness of a Proposed Program Based on the Lexical Approach in Fostering EFL Faculty of Management Sciences Students’ Business Collocational Knowledge and Competence

The aim of the current study was to develop first year EFL Faculty of Management Sciences students’ business collocational knowledge and competence through a proposed program based on the Lexical Approach. It focused on developing the experimental group students’ receptive and productive knowledge of 'verb + noun', 'noun + noun' and 'adjective+ noun' business collocations. Furthermore, the study program aimed to promote the experimental group students’ ability to use these collocations in business writing to foster their collocational competence. The study followed the quasi-experimental pretestposttest control group/ experimental group design where two intact groups were randomly assigned to the control and experimental groups. While the control group students received regular instruction, the experimental group was taught by the researcher throughout the fall semester of the academic year 20202021 according to the proposed program. The study tools included a pre/postcollocational knowledge test and a pre-/postcollocational competence business writing test. Results indicated that the experimental group students outperformed the control group students on the collocational knowledge and competence post-tests. Also, there were statistically significant differences between the experimental group students' pretests and posttests scores in favour of the posttests scores. Therefore, it was concluded that the proposed program was effective in developing the experimental group students' lexical business collocational knowledge and competence.
Study on Psychological Stress Response and Intervention Countermeasures of Exposed Population under Sudden Public Health Crisis

Background After the occurrence of public health emergencies, people will have a series of physiological reactions, which will develop into psychological stress disorder in serious cases. Based on this, the purpose of this study is to analyze the psychological stress response and intervention countermeasures of exposed people under sudden public health crisis. Objective To explore the psychological stress response and intervention countermeasures of exposed population under sudden public health crisis. Methods A total of 400 people under the sudden public health crisis that bring about serious damage to public health, mass diseases of unknown causes, major food and occupational poisoning, and other events that seriously affect public health from December 2020 to December 2021 were selected as the subjects of the study. It was randomly and equally divided into two groups to take different intervention measures, the control group was given routine public health crisis intervention measures, and the research group was given comprehensive intervention. The metabolism, social function defects, health symptoms, psychological status, quality of life, sleep quality, and stress reaction were compared between the two groups. Results The rate of good metabolism in the research group was significantly higher than that in the control group (P < 0.05). After intervention, the scores of Social Disability Screening Schedule (SDSS) and Symptom Checklist 90 (SCL-90) decreased in both groups, and the scores of SDSS and SCL-90 in the research group were lower than those in the control group. After intervention, the scores of self-rating depression scale and self-rating anxiety scale in the two groups decreased, and the scores of self-rating depression scale and self-rating anxiety scale in the research group were lower than those in the control group (P < 0.05). The sleep quality of the research group was better than that of the control group (P < 0.05). The stress response indexes such as cortisol, blood glucose, and C-reactive protein in the two groups were decreased after intervention. The stress response indexes such as cortisol, blood glucose, and C-reactive protein in the research group were lower than those in the control group (P < 0.05). Conclusion Giving that comprehensive intervention measures to people exposed to sudden public health crisis can effectively relax their stress response, reinvigorate their quality of life and sleep, reduce depression and anxiety, and improve their metabolism, therefore, in the case of the outbreak of public health crisis in the future, it is worth applying for reference and popularizing.
MhcII Regulates Transmission of α-Synuclein-Seeded Pathology in Mice

MHCII molecules, expressed by professional antigen-presenting cells (APCs) such as T cells and B cells, are hypothesized to play a key role in the response of cellular immunity to α-synuclein (α-syn). However, the role of cellular immunity in the neuroanatomic transmission of α-syn pre-formed fibrillar (PFF) seeds is undetermined. To illuminate whether cellular immunity influences the transmission of α-syn seeds from the periphery into the CNS, we injected preformed α-syn PFFs in the hindlimb of the Line M83 transgenic mouse model of synucleinopathy lacking MhcII. We showed that a complete deficiency in MhcII accelerated the appearance of seeded α-syn pathology and shortened the lifespan of the PFF-seeded M83 mice. To characterize whether B-cell and T-cell inherent MhcII function underlies this accelerated response to PFF seeding, we next injected α-syn PFFs in Rag1−/− mice which completely lacked these mature lymphocytes. There was no alteration in the lifespan or burden of endstage α-syn pathology in the PFF-seeded, Rag1-deficient M83+/− mice. Together, these results suggested that MhcII function on immune cells other than these classical APCs is potentially involved in the propagation of α-syn in this model of experimental synucleinopathy. We focused on microglia next, finding that while microglial burden was significantly upregulated in PFF-seeded, MhcII-deficient mice relative to controls, the microglial activation marker Cd68 was reduced in these mice, suggesting that these microglia were not responsive. Additional analysis of the CNS showed the early appearance of the neurotoxic astrocyte A1 signature and the induction of the Ifnγ-inducible anti-viral response mediated by MhcI in the MhcII-deficient, PFF-seeded mice. Overall, our data suggest that the loss of MhcII function leads to a dysfunctional response in non-classical APCs and that this response could potentially play a role in determining PFF-induced pathology. Collectively, our results identify the critical role of MhcII function in synucleinopathies induced by α-syn prion seeds.
Assessing the Population Parameters of Decapterus punctatus (Cuvier 1829) from the Coastal Waters of Greater Accra, Ghana using TropFishR

Globally, fish stocks have been declining since the 1990s. The demand for fish for human consumption continues to upsurge reaching 179 million tonnes in 2018 mainly due to urbanization and expansion of the fish-consuming middle class in developing markets (FAO, 2018). Fish continue to be an important component in the diets of majority of people, especially those living in low and middle income countries (Delgado, 2003; Hassberg et al., 2020). The share of fish production destined for human consumption is expected to continue to grow from 50% in 2020 to 89% by 2030 (FAO, 2022). Fisheries are an important source of livelihood and income for over 60 million people globally (FAO, 2018).
High angle of attack: Aerodynamics

The ability to predict high angle of attack, nonlinear, aerodynamic characteristics of flight vehicles, including aircraft, has made significant progress in the last 25 years using computational tools and analyses. The key technological element which has made these analyses possible is the ability to account for the influence of the shed vortical flow, prevalent in this angle of attack range, on geometries of interest. Using selected analysis techniques, applications have also been made to wing design in order to improve their high speed maneuver performance. Various techniques, associated with different levels of accuracy, exist to model this vortical flow influence. The ones included in this paper cover: suction analogy with extensions; free vortex filaments; free vortex sheet modeling; and Euler and Navier-Stokes solutions. Associated relevant features of vortices are also addressed, including: the wing and flow conditions which cause vortex formation; and how the vortex strength varies with angle of attack and wing sweep.
Measurements of the absolute value of the penetration depth in high-Tc superconductors using a low-Tc superconductive coating

A method is presented to measure the absolute value of the London penetration depth, λ(T=0), from the frequency shift of a resonator. The technique involves coating a high-Tc superconductor with film of low-Tc material of known thickness and penetration depth. The method is applied to obtain λ(YBa2Cu3O7−δ)≈1460±150 A, λ(Bi2Sr2CaCu2O8+δ)≈2690±150 A and λ(Pr1.85Ce0.15CuO4−δ)≈2790±150 A. λ(YBa2Cu3O7−δ) from this method is very close to that obtained by several other techniques. For both Bi2Sr2CaCu2O8+δ and Pr1.85Ce0. 15CuO4−δ the values exceed those obtained by other methods.
On the correlation of magnetic field strength and inclination with continuum brightness of a sunspot penumbra

A fairly regular sunspot penumbra has been observed near disk center using a Stokes V polarimeter at the German Vacuum-Tower-Telescope in Izana, Tenerife. We obtained two-dimensional spectral data by scanning the limbside sector of the penumbra in steps of 1 arcsecond with the slit oriented parallel to the solar limb. From Stokes V and Stokes I spectra of four magnetically sensitive lines (Fe I5247.1 A, Cr I5247.6 A, Fe I5250.2 A, and Fe I5250.7 A) recorded with 1024 × 1024 pixel CCD cameras we have determined several magnetic parameters. The results of a correlation analysis show a clear relation between continuum brightness and magnetic field inclination, field lines beeing flatter in the dark penumbral filaments
SENSITIVITY OF THE H3O+ INVERSION–ROTATIONAL SPECTRUM TO CHANGES IN THE ELECTRON-TO-PROTON MASS RATIO

Quantum-mechanical tunneling inversion transition in ammonia (NH3) is actively used as a sensitive tool to study possible variations of the electron-to-proton mass ratio, μ = me/mp. The molecule H3O+ has the inversion barrier significantly lower than that of NH3. Consequently, its tunneling transition occurs in the far-infrared (FIR) region and mixes with rotational transitions. Several such FIR and submillimeter transitions are observed from the interstellar medium in the Milky Way and in nearby galaxies. We show that the rest-frame frequencies of these transitions are very sensitive to the variation of μ, and that their sensitivity coefficients have different signs. Thus, H3O+ can be used as an independent target to test hypothetical changes in μ measured at different ambient conditions of high (terrestrial) and low (interstellar medium) matter densities. The environmental dependence of μ and coupling constants is suggested in a class of chameleon-type scalar field models—candidates to dark energy carrier.
Construction of dynamics and time-ordered exponential for unbounded non-symmetric Hamiltonians

We prove under certain assumptions that there exists a solution of the Schrodinger or the Heisenberg equation of motion generated by a linear operator H acting in some complex Hilbert space H, which may be unbounded, not symmetric, or not normal. We also prove that, under the same assumptions, there exists a time evolution operator in the interaction picture and that the evolution operator enjoys a useful series expansion formula. This expansion is considered to be one of the mathematically rigorous realizations of so-called “time-ordered exponential,” which is familiar in the physics literature. We apply the general theory to prove the existence of dynamics for the mathematical model of Quantum Electrodynamics quantized in the Lorenz gauge, the interaction Hamiltonian of which is not even symmetric or normal.
Correlation Functions of Quantum Toroidal gln Algebra

In this paper, we study the correlation functions of the quantum toroidal \mathfrak{gl}_n algebra. Their first key properties are established in analogy to those of the correlation functions of quantum affine algebras U_q\mathfrak{n}_+. The core of the paper is the proof of the vanishing of those correlation functions at length 3 wheel conditions, which is done separately for n = 1, n = 2, n≥ 3 cases with different ``Master Equalities" of formal series (the n = 1 case has been previously discussed by the author in (Cui, 2021)). Another important contribution is the discovery of cubic Serre relations for the quantum toroidal.