Miracle-dz/UniFAR-FTUs huggingface dataset:
A Review of the Research on the Mechanism of Strategic Leadership at the Organizational Level

In the more competitive business landscape brought about by the rapid development of globalization, strategic leadership has become the key to the long-term success of enterprise organizations, which has attracted extensive attention in the field of practice and research. It is not only now, but will always be an important and hot research field. In the development of social economy and the excellent enterprise, for enterprise leadership is crucial to the success of the strategy implementation, and strategic leadership as a combination of strategy and leadership functions, is more important, among them, we analyzed the strategic leadership performer refers to as an organization is responsible for determining the development direction and long-term development goals and promote the goals of top managers. Through the review and summary of relevant literature on strategic leadership, this paper discusses the effects of strategic leadership from different perspectives such as positive organizational behavior perspective and ambivalent learning theory, and actively introduces the theory of harmonious management to make up for the deficiencies of existing research on strategic leadership. Finally, the future research direction of strategic leadership is prospected, and my own views and suggestions are put forward, aiming to provide reference and guidance for the subsequent research.
Identification and control of a small-scale helicopter

Designing reliable flight control for an autonomous helicopter requires a high performance dynamics model. In this paper, a nonlinear autoregressive with exogenous inputs (NLARX) model is selected as the mathematical structure for identifying and controlling the flight of a small-scale helicopter. A neural network learning algorithm is combined with the NLARX model to identify the dynamic component of the rotorcraft unmanned aerial vehicle (RUAV). This identification process is based on the well-known gradient descent learning algorithm. As a case study, the multiple-input multiple-output (MIMO) model predictive control (MPC) is applied to control the pitch motion of the helicopter. Results of the neural network output model are closely match with the real flight data. The MPC also shows good performance under various conditions.
Intima-Media Thickness and Pulsatility Index of Common Carotid Arteries in Acute Ischaemic Stroke Patients with Diabetes Mellitus

Ultrasonographic parameters such as the common carotid artery (CCA) pulsatility index (PI) and CCA intima-media thickness (IMT) have been associated with an increased mortality and risk of recurrent stroke, respectively. We hypothesized that these ultrasonographic parameters may be useful for monitoring diabetic patients after an acute stroke. We analysed retrospective data of consecutive acute ischaemic stroke patients from the ASTRAL registry who underwent pre-cerebral ultrasonographic evaluation within 7 days of symptom onset. We compared clinical, demographic, radiological and ultrasonographic parameters in diabetic versus non-diabetic patients (univariable and multivariable analyses) and the association of these parameters with CCA PI and CCA IMT. We analysed 1507 carotid duplex ultrasound examinations from patients with a median age of 74 years. Cardiovascular co-morbidities, including hypertension, hypercholesterolemia, obstructive sleep apnoea syndrome, higher body-mass index (BMI) and peripheral artery disease, were associated with diabetes mellitus (DM). Diabetics were more often under antiplatelet therapy and had atrial fibrillation at admission. Diabetic patients showed an increased CCA PI and IMT in line with more atherosclerotic changes on acute CTA compared to non-diabetic patients. Taking IMT as the dependent variable in a second analysis, DM, higher age, hypertension, smoking and CCA PI were associated with higher IMT. Taking CCA PI as the dependent variable in a third analysis, DM, higher age and higher NIHSS at admission were associated with higher CCA PI values. Increased IMT was also associated with higher PI. We show that CCA PI and IMT are higher in diabetic patients in the first week after an initial stroke.
Influencia de aspectos cualitativos en las decisiones de autoexclusión financiera de mujeres

El trabajo aborda el contexto de la autoexclusión financiera, realizando énfasis en los aspectos cualitativos que originan esta situación, con foco en la población de sexo femenino. Tal abordaje se hizo necesario considerando que en el ámbito financiero aún predominan las teorías económicas tradicionales con tendencia positivista, existiendo un espacio de conocimiento relacionado a las teorías críticas, que se consideró propicio investigar. El objetivo principal de este trabajo fue identificar los factores que inciden en la autoexclusión financiera desde la perspectiva de mujeres. Se procedió a la revisión de publicaciones científicas de diversos autores accediendo a ellos por medio de Google Académico. Los principales resultados indican que las finanzas, no se rigen solamente por motivaciones racionales y datos cuantitativos como tasas de interés, comisiones, o cargos, sino que también intervienen aspectos cualitativos, no económicos, y que entre los factores que inciden en la autoexclusión financiera desde la perspectiva de la población género femenino, se presentan razones emocionales, ideológicas, morales e inclusive religiosas, así como escasos conocimientos del funcionamiento del sector financiero, experiencias pasadas con entidades bancarias, desconocimiento de los productos, y desconfianza, esto ocasiona problemas a nivel social, lo que las posiciona en un sitio vulnerable dentro de la sociedad.
ABUNDANCE PATTERN OF METAL-RICH STARS FROM 14 OLD AND 24 YOUNG STARS

The metallicities and abundance ratios, [X/Fe], of 12 elements—C, Na, Mg, Si, S, Ca, Ti, Cr, Ni, Y, Zr, and Ce—are determined for 14 old and 24 young metal-rich stars based on high resolution, high S/N spectra obtained with the HIDES spectrograph attached to the 1.88 m telescope of Okayama Astrophysical Observatory (Okayama, Japan). The results show that there is no any significant difference in the [X/Fe] versus [Fe/H] trend for these elements between the two groups of stars. This is consistent with the kinematics of the two groups of stars being similar to that of the thin disk. In connection with the abundance analysis, we found that iron abundances from Fe ii lines are generally higher than those from Fe i lines for cool metal-rich stars. In particular, the [S/Fe] ratio strongly depends on stellar temperature. In view of this, the chemical evolution of the element sulfur can only be traced by selecting solar-type stars within a critically narrow temperature range. Inspecting a large sample of metal-rich stars, we found that young metal-rich stars generally have kinematics similar to that of the local thin disk, while old metal-rich stars show two different kinematic distributions, one with VLSR ∼ −10kms−1 and the other with VLSR ∼ −50kms−1. Abundances of this new population of old metal-rich stars with a slight lag in the Galactic rotation have already been investigated by the present authors. We compared the abundance patterns for the three groups of metal-rich stars, and did not find any significant difference in abundance ratios for the elements investigated. These results indicate an inhomogeneous metallicity enhancement but similar nucleosynthesis history for the Galactic evolution of the thin disk from the beginning to the present.
Photolevitation of Diffuse Clouds

Radiation pressure on dust grains can raise small dusty clouds above the main gaseous disk to high Galactic latitudes. This photolevitation effect drives neutral gas and dust into a soft Galactic fountain and can maintain a column density of the order of 10 to the 20th/sq cm above the main gaseous disk. This value is defined by dust opacity and corresponds to a normal dust-to-gas ratio with cosmic abundances. The maximum height reached by the photolevitated clouds depends on the radiation field and dust-to-gas ratios. Clouds located above luminous stellar clusters or near spiral arms with intense star formation can reach several hundred parsecs in height. 56 refs.
Microstructure of Water Masers in W3 IRS 5

We report sub-milliarcsecond structures of water maser features in W3 IRS 5 observed with the Very Long Baseline Array (VLBA) at 22.2 GHz. A cluster of maser spots (emission spots in individual velocity channels) within a maser feature exhibits a simple velocity gradient but a complicated spatial alignment. Two-point spatial correlation functions for the spots can be fitted by power laws with an index of about 2 in both of the two ranges of 0.04-0.4 and 1-300 AU. This fact indicates a similar clustering of spots in the two very different ranges. The Doppler-velocity difference of the spots as a function of spot separation demonstrates a Kolmogorov-type turbulence in the range of 0.04-300 AU. Similar power laws in these functions have been reported for the W49N water masers. A unique difference of the W3 IRS 5 from the W49N masers is that on a scale above 1 AU, the Doppler-velocity difference of the spots in W3 IRS 5 (≤5 km s-1) is much smaller than that in W49N (≤150 km s-1). Very likely, this difference between the two sources arises because of different outflow velocities.
Clinical Significance of Myositis-Specific and Myositis-Associated Antibody Profiles in Dermatomyositis

Background: Myositis-specific autoantibodies (MSA) and myositis-associated autoantibodies (MAA) are clinically useful biomarkers that point to the diagnosis, clinical manifestations, and prognosis of dermatomyositis (DM). Materials and Methods: To estimate the prevalence of MSA as well as MAA and analyze possible clinical correlations of these autoantibodies in patients diagnosed with DM, we conducted a cross-sectional study of 30 patients who were diagnosed with DM. Results: MSA were positive in 19 patients (63%) in which Mi 2 was positive in 8 (27%) patients, and this was the most frequently found MSA. A total of 11 (36.7%) patients showed positive MAA. AntiPM/Scl 75 and anti-Ro 52 were positive in 5 (16.7%) patients each and these were the most commonly found MAA. Anti-La was absent in all our patients. There were 8 (27%) patients in whom both MSA and MAA were positive. Either MSA and/or MAA were positive in 22 (73%) patients. On a bivariate analysis, the patients who were positive for anti-PM/Scl 75 showed a significant difference in manifesting cutaneous ulcers (P value 0.023). It was also found that anti-SAE-positive patients showed a significant difference with malignancy (P value 0.014). Anti-Ro 52-positive patients were less likely to have symmetrical proximal muscle weakness (P value 0.006). Conclusions: All patients who were anti-MDA 5 positive had myositis and none of the anti-MDA 5-positive patients had rapidly progressive interstitial lung disease (RPILD). More than one MSA in the same patient was noted in three patients.
Structural and Electrical Properties of PZT/PVDF Piezoelectric Nanocomposites Prepared by Cold-Press and Hot-Press Routes

The 0-3 PZT/PVDF piezoelectric composites are prepared separately by hot-press and cold-press processes. The effects of the PZT content and the shaping-process on the composites are studied. The experimental results indicate that composites with 70% PZT nanopowders prepared by the hot-press method exhibit excellent piezoelectric and dielectric properties. The maxima of dss and e of the composites prepared by hot-press method are about 30% and 65% higher than those prepared by the cold-press method, respectively. This is mainly attributed to the favourable coupling of the two materials in the process of the hot press and the formation of the β-type PVDF, which possesses better electric properties.
Electrical resistivities of Al-Pd-Mn icosahedral quasicrystals

The resistivity of Al-Pd-Mn icosahedral quasicrystals increases almost linearly with decreasing temperature, shows a maximum at a temperature (between 10 and 100 K) and then decreases in low Mn alloys ( 9at%Mn) the resistivity increases again steeply at even lower temperatures. The resistivity at helium temperature varies from 1500 to 9500 µΩcm depending on the composition and quasicrystallinity of the sample. The magnetoresistance in single-grained sample of Al 70 Pd 21 Mn 9 is positive and temperature dependent, with Δρ/ρ at 0.5 K at 8 T being as large as 6%. It is concluded that the temperature and magnetic-field dependences are governed dominantly by the weak localization effect for the case of strong spin-orbit scattering, and in high Mn concentration alloys, a Kondo effect superimposes to the weak localization effect.
Neural Dielet: A 0.4 mm$^{3}$ Battery-Less Crystal-Less Neural-Recording System on Die Achieving 1.6 cm Backscatter Range With 2 mm ×2 mm On-Chip Antenna

Miniaturization is essential in the design of wireless neural-recording systems. In recent years, the battery in neural-recording systems can be eliminated by wireless power transfer (WPT), while antenna and crystal become two main bottlenecks to minimize a battery-less neural implant. In conventional battery-less designs, the miniaturization of antenna led to a short communication range, and a crystal-less clock suffered from noise issue or power-hungry circuits. In this work, we demonstrate a 0.4 mm<inline-formula><tex-math notation="LaTeX">$^{3}$</tex-math></inline-formula> neural dielet, which is a battery-less crystal-less neural-recording system on die (SoD) within a 2 mm × 2 mm on-chip coil antenna. The communication range through the ultra-small antenna is extended by a proposed dither-based 3<inline-formula><tex-math notation="LaTeX">$^{\text{rd}}$</tex-math></inline-formula>-order intermodulation (IM3) technique, which prevents the backscatter communication from WPT blocker. Meanwhile, a dither-based 2<inline-formula><tex-math notation="LaTeX">$^{\text{nd}}$</tex-math></inline-formula>-order intermodulation (IM2) wireless-lock technique is proposed to remove the crystal. Measured results show that the SoD consumes 53.2 <inline-formula><tex-math notation="LaTeX">$\mu$</tex-math></inline-formula>W power and achieves a wireless communication range of 1.6 cm at a bit-error rate (BER) of 8 <inline-formula><tex-math notation="LaTeX">$\times\, 10^{-6}$</tex-math></inline-formula>, accompanied by simultaneous WPT for battery-less operation. In the animal experiment, the neural signal wirelessly recorded by our SoD in a battery-less way matches favorably with the wire-test results obtained by a commercial chip.
Behavior of hollow balls containing granules bouncing repeatedly off the ground

An experimental study of the behavior of hollow balls filled with some granules (mung beans or millets) bouncing repeatedly off a static flat horizontal surface is presented. We observed that the bounce number of the ball is limited and decreases regularly with an increasing number of granules. Moreover, for two balls containing a different kind of granules, their bounce numbers are basically equal when the two balls have the same mass of granules. While there is no clear relationship between the first rebound height of one ball and the number of granules, there appears an exponential decay of the second rebound height with an increase of the granule number. Furthermore, a two-dimensional numerical model has been created to find out the law of the ball's rebound height and the dissipation law of the granule nested system. A generalized prediction equation to reasonably explain the law of the bounce number has also been proposed.
Polarimetric Radar Observations from a Waterspout-Producing Thunderstorm

AbstractA family of four waterspouts was produced by a convective cell over western Lake Michigan on 12 September 2013. This storm initiated along a boundary north of a mesolow in a low-level cold-air advection regime, and developed supercell characteristics once the second waterspout was in progress. Polarimetric characteristics of the storm, and of the development of supercell character, are presented. These observations represent the first documented polarimetric radar observations of waterspout-producing convection in the Great Lakes region. Unusually high differential reflectivity values accompanied this storm and its initiating boundary. The high values along the boundary are partially explained by a high density of dragonflies. High differential reflectivity values were present through much of the storm of interest despite very low aerosol concentration at low levels in the lake-influenced air mass. Finally, this case illustrates the importance of environmental awareness on waterspout-favorable day.
PELATIHAN ZOOM MEETING SEBAGAI MEDIA PEMBELAJARAN DARING UNTUK GURU TK/KB GOLAN KABUPATEN MADIUN

media pembelajaran yang dapat dimanfaatkan secara gratis pada pembelajaran jarak jauh. Masalah muncul, ketika pendidik kurang menguasi aplikasi zoom meeting sebagai media pembelajaran. Pelatihan ini bertujuan untuk melatih guru-guru memanfaatkan Zoom Meeting sebagai media pembelarang daring. Langkah-langkah kegiatan pengabdian masyarakat ini diawali dengan perencanaan bersama tim, kemudian persiapan kegiatan, dan yang terakhir adalah pelaksanaan pelatihan. Guru berlatih melalui tahapan yang diinstruksikan mulai dari sederhana menuju rumit sesuai kebutuhan sekolah. Tahapan yang dilakukan antara lain mengunduh aplikasi zoom, Sign Up zoom, Join Zoom dan Membuat Meeting Sendiri di Zoom. Respon guru sebagai peserta cukup baik sehingga semuanya mampu menguasai materi dan berhasil mengerjakan Latihan yang diberikan.
Self-Healing Alginate Hydrogel Formed by Dynamic Benzoxaborolate Chemistry Protects Retinal Pigment Epithelium Cells against Oxidative Damage

Oxidative stress is considered as a major factor causing retinal pigment epithelium (RPE) dysfunction and finally leading to retinal diseases such as age-related macular degeneration (AMD). Developing hydrogels for RPE cell delivery, especially those with antioxidant feature, is emerging as a promising approach for AMD treatment. Herein, a readily prepared antioxidant alginate-based hydrogel was developed to serve as a cytoprotective agent for RPE cells against oxidative damage. Alg-BOB was synthesized via conjugation of benzoxaborole (BOB) to the polysaccharide backbone. Hydrogels were formed through self-crosslinking of Alg-BOB based on benzoxaborole-diol complexation. The resulting hydrogel showed porous micro-structure, pH dependent mechanical strength and excellent self-healing, remolding, and injectable properties. Moreover, the hydrogel exhibited excellent cytocompatibility and could efficiently scavenge reactive oxygen species (ROS) to achieve an enhanced viability of ARPE-19 cells under oxidative condition. Altogether, our study reveals that the antioxidant Alg-BOB hydrogel represents an eligible candidate for RPE delivery and AMD treatment.
Film Characteristics of Low-Temperature Plasma-Enhanced Chemical Vapor Deposition Silicon Dioxide Using Tetraisocyanatesilane and Oxygen

Silicon dioxide films were deposited in a parallel-plate electrode RF plasma-enhanced chemical vapor deposition (PECVD) system using hydrogen-free tetraisocyanatesilane (TICS) and oxygen. The deposition parameters were varied systematically, and the films were characterized by measuring infrared spectra, density, etch rate, refractive index, and current-voltage (I–V) and capacitance-voltage (C–V) characteristics, as well as by examining their annealing behavior. At 300°C and a TICS partial pressure ratio of 20%, a water-free and hydroxyl-group-free SiO2 film was obtained. The film density, BHF etch rate, refractive index, resistivity, and dielectric constant were 2.3 g/cm3, 330 nm/min, 1.46, 7×1015 Ω·cm, and 3.6, respectively. The film quality degraded and, simultaneously, the film absorbed moisture from the atmosphere with decreasing deposition temperature; however, the quality can be improved by reducing TICS partial pressure. SiO2 films could be deposited even at 15°C, and had a resistivity of about 1013Ω·cm. Infrared measurements showed that SiO2 films deposited from TICS/O2 contained less absorbed water than those deposited from hydrogen-containing source materials at the same deposition temperature.
Temporal processing abilities of hearing‐impaired listeners

It has been suggested that deficits in speech processing associated with hearing impairment may result in part from deficits in basic temporal processing abilities. Performance of 16 sensorineural hearing‐impaired listeners, whose mean heating loss ranged from 25–95 dB, was studied with a battery of discrimination tasks [Watson et al., 1. Acoust. Soc. Am. Suppl. 1 71, S73 (1982)]. The tasks included discrimination of: (a) duration of a 1.0‐kHz tone; (b) temporal jitter within a train of square pulses; (c) temporal order of two sinusoidal frequencies; (d) temporal order within sequences of syllables; (e) detection of a variable duration test tone, embedded in a nine‐tone sequence; and (f) frequency and intensity of 1.0‐kHz tone. Stimuli were presented over headphones, with 6 dB/oct frequency pre‐emphasis, or in the field while the subjects wore their hearing aids. The sensation level was in all cases held constant at 25–30 dB. Although there were notable individual differences, the average performance in t.
Wide-Band Felt Antenna With 6-Cells Electromagnetic Band Gap Jeans Array for Wireless Area Network Applications

This study proposed a 20 mm x 30 mm x 1 mm wearable antenna constructed of fabric (felt) substrate, making it the most suitable candidate for wearable applications, and fit for embedding in cloths for use in telemedicine applications. In addition, an electromagnetic band gap (EBG) array comprised of 6 square copper loops attached to a fabric substrate (jeans) with a slotted ground structure was proposed. The proposed antenna design combined with the EBG array had a total dimension of 60 mm x 60 mm x 2 mm and operated at 2.4 GHz with low specific absorption rate (SAR) of 1.55 watts per kilogram (W/kg) and 0.77 W/kg per 10 g. The simulation and measurement results indicated that the antenna performed better when coupled with the 6-cells EBG array constructed on a substrate different from that of the antenna and featuring slots on the EBG partial ground. This new approach of using a different substrate for the antenna and EBG array significantly increased the antenna’s bandwidth from 7.5% to 25 %, that can overcome the problem of frequency shifting and reduced the negative effect of the human body on the performance of the antenna. Furthermore, the partial slotted EBG ground increased the antenna gain from 1.4 dBi to 6.7 dBi. Additionally, the antenna’s performance was measured on a real human body arm. The measurement results showed a good agreement with the simulation results, making the proposed design reliable for wearable telemedicine applications.
The cell type dependent sorting of CD9- and CD81 to extracellular vesicles can be exploited to convey tumor sensitive cargo to target cells

Abstract Extracellular vesicles (EVs) are lipid membrane-bound particles involved in cell-to-cell communication through a delivery of regulatory molecules essential for physiological processes. Since EVs efficiently vectorize specific cargo molecules, they have been proposed as suitable vehicles for therapeutic agents. Drug loading into EVs can be achieved by active, exogenous strategies or by genetic modifications of vesicle-producing cells. With the aim to produce EVs conveying therapeutic proteins, we genetically engineered and compared HEK293 to tumor cells. Tetraspanin-based RFP fusions were found to be more stable and preferentially sorted into EVs in HEK293. EVs isolated from genetically modified HEK293 cells media were captured by cancer cells, efficiently delivering their cargo. Cathepsin B cleavage site introduced between CD9/CD81 and RFP was recognized by tumor specific proteases allowing the release of the reporter protein. Our results indicate HEK293 cells as a preferential system for the production of EVs and pave the way to the development of nano-platforms for the efficient delivery of therapeutic proteins and prodrugs to tumor cells.