Miracle-dz/UniFAR-FTUs huggingface dataset:
Muscular Power of Leg Extensor Muscles in Young Top-level Table Tennis Players

Introduction. Table tennis is an individual and asymmetric sport in which a great number of shots are performed at high speed developing high levels of muscular power. The aim of this study was to determine the power of leg extensor muscles in young top-level table tennis players. Methods. A total of 63 players (38 males and 25 females), aged between 10 and 13 years and members of Spanish National Team have been included in the study. After 15-min of easy cycling (cycloergometer Monark 810) subjects randomly carried out three attempts on SJ test and three more on CMJ test (Newtest® contact map). A rest period of two minutes was established between attempts. The test was executed for both jumps following the original protocol. The measured variables were jump height (cm), flight time (ms), power (W), and elasticity index. A t-test for independent samples was performed to examine statistical differences between sex groups. Results. All variables measured on SJ and CMJ tests showed higher values in female than in male players (with exception of the flight time). Also, data related to CMJ were higher than those registered in SJ, independently from the sex factor (see table below). The elasticity index was higher in female players than in male players. Conclusions. Although within the tested age interval, sex differences in generating muscle power are not clear, higher values in female players have been registered for all variables measured, with exception of the elasticity index.
A Polyhedral Annexation Algorithm for Aligning Partially Overlapping Point Sets

Point set registration aims to find a spatial transformation that best aligns two point sets. Algorithms which can handle partial overlap and are invariant to the corresponding transformations are particularly desirable. To this end, we first reduce the objective of the robust point matching (RPM) algorithm to a function of a low dimensional variable. The resulting function is nevertheless only concave over a finite region including the feasible region, which prohibits the use of the popular branch-and-bound (BnB) algorithm. To address this issue, we propose to use the polyhedral annexation (PA) algorithm for optimization, which enjoys the merit of only operating within the concavity region of the objective function. The proposed algorithm does not need regularization on transformation and thus is invariant to the corresponding transformation. It is also approximately globally optimal and thus is guaranteed to be robust. Moreover, its most computationally expensive subroutine is a linear assignment problem which can be efficiently solved. Experimental results demonstrate better robustness of the proposed method over the state-of-the-art algorithms. Our method’s matching error is on average 44% (resp. 65%) lower than that of Go-ICP in 2D (resp. 3D) synthesized tests. It is also efficient when the number of transformation parameters is small.
Novel RF front-end design for low power UWB applications

The needs for short range and fine resolution communications systems has motivated researchers to replace the wire-line communications systems with ultra-wideband communications systems. The ultra-wideband radio technology introduces significant advantages for short-range communications systems. This technology operates in a wide bandwidth, which allows for gigabit data rates over short distances. Due to the low complexity of the ultra-wideband system and low transmit power, it benefits from low DC power consumption. However, with growing demands for wireless communications systems, the ultra-wideband communications systems are facing more challenging requirements. Since the ultra-wideband covers a wide range of frequency, it causes challenges in the design of building blocks, in particular receiver front-end. The scope of this dissertation is to design a novel and innovative RF front-end receiver for the ultra-wideband transceivers using CMOS technology. A T-coil network can be implemented as a high order filter for bandwidth extension. This technique is incorporated into the design of the input matching and output peaking networks of a low-noise amplifier. The intrinsic parasitic capacitances within the transistors are exploited as a part of the wideband structure to extend the bandwidth. Using the proposed topology, a wideband low-noise amplifier with a bandwidth of 3−8 GHz, a maximum gain of 16.4 dB and noise figure of 2.9 dB (min) is achieved. The total power consumption of the wideband low-noise amplifier from the 1.8 V power supply is 3.9 mW. The prototype is fabricated in 0.18 μm CMOS technology. Furthermore, a two-stage down-conversion architecture for 3−8 GHz ultra-wideband receiver front-end is designed, which uses a local oscillator frequency equal to half of the input frequency. A single stage low power single-to-differential low-noise amplifier is designed to eliminate the need for an off-chip balun and increases the integration
Adaptive Network on Chip Routing using the Turn Model

Chapter 1 N etwork on Chip D escription and M odel 1 1.1 History . 1 1.2 Network on C h i p . 2 1.3 NoC O p e ra tio n . 4 1.4 NoC Operation E x a m p le s . 5 1.5 Challenges in a N o C . 9 C hapter 2 R outing A lgorithm s in a 2D M esh 11 2.1 The Turn Model . 11 2.2 X Y . 12 2.3 W est-F irst. 12 2.4 Negative-First. 13 2.5 O d d-E ven . 14 2.6 Non-Minimal O d d -E v en . 17 2.7 D y X Y . 22 2.8 Adaptivity of Routing Algorithms . 22 Chapter 3 W eighted N on-M inim al O ddEven 25 3.1 Routing C o s t . 25 3.2 Stress V a lu e s . 25 3.3 Queue P e n a l ty . 27 3.4 Direction P en a lty . 27 3.5 Weighted Non-Minimal O d d E v en . 28
Factors Influencing the In Vitro Maturation (IVM) of Human Oocyte

In vitro maturation (IVM) of oocytes is a promising assisted reproductive technology (ART) deemed as a simple and safe procedure. It is mainly used in patients with impaired oocyte maturation and in fertility preservation for women facing the risk of losing fertility. However, to date, it is still not widely used in clinical practice because of its underperformance. The influencing factors, such as biphasic IVM system, culture medium, and the supplementation, have a marked effect on the outcomes of oocyte IVM. However, the role of different culture media, supplements, and follicular priming regimens in oocyte IVM have yet to be fully clarified and deserve further investigation.
MODEL SUSCEPTIBLE VACCINATED INFECTED TREATMENT RECOVERED DENGAN KASUS KAMBUH DAN PENERAPANNYA (KASUS TUBERKULOSIS DI INDONESIA)

Tuberculosis (TB) is caused by Mycobacterium tuberculosis. BCG vaccination is prevention the spread of TB in Indonesia. Individuals who are vaccinated (vaccinated) are healthy individuals and susceptible to infection. If a person is infected with TB then curative efforts through DOTS treatment must be carried out in order to recover. In the case of TB, recovered individuals may relapse. The susceptible vaccinated infected treatment recovered ( ) model with relapse cases is able to represent the spread of TB. This study aims to build the model with relapse, apply it to TB in Indonesia using data from 2004-2019, and interpret the results of implementing the TB-free target in Indonesia in 2050. The model is nonlinear first-order differential equations. The graph of the pattern of TB spread shows that all groups of individuals are experiencing an uptrend and it is predicted that the TB-free target has not been achieved. However, if the coverage of BCG vaccination and DOTS treatment is increased, contacts with TB sufferers are reduced, and relapse cases are reduced, it is predicted that the TB-free target will be achieved.
Fluid-Structure Interaction Analysis of Aircraft Hydraulic Pipe with Complex Constraints Based on Discrete Time Transfer Matrix Method

Fluid-structure interaction (FSI) is prevalent in aircraft hydraulic pipes due to high-pressure fluid pulsation, complex pipe path routing and boundary constraints, which pose a serious threat to the safety and reliability of the aircraft hydraulic system. This paper focuses on the FSI response of aircraft hydraulic pipes with complex constraints. A comprehensive fourteen-equation model for describing the FSI of pipe conveying fluid with wide pressure and Reynolds number range is proposed. The excitation models and complex boundary constraints of liquid-filled pipes are established. Moreover, based on the transfer matrix method (TMM), combined with the time discreteness and analytical integral method, a discrete time transfer matrix method (DTTMM) for solving the FSI fourteen-equation model in time domain is presented. Then, the numerical solution and experiment of an ARJ21-700 aircraft hydraulic pipe with complex constraints is carried out with four working conditions. The obtained results verify the correctness of the proposed model and solution method, and reveal the universal laws of the FSI response about aircraft hydraulic pipes, which can also provide theoretical and experimental references for modeling, solutions and verification in the FSI analysis of pipe conveying fluid.
Ultrafast pulsed laser micro-deposition printing on transparent media

Ultrafast pulsed laser ablation is employed in laser-induced backward transfer for printing on transparent media. By combining a high pulse repetition rate of 1 MHz and an ultrashort pulse duration of 700 fs in an ultrafast fiber laser, we demonstrate printing of bitmap images and vector graphics with nearly continuous gray scales and high linear printing speeds up to 10 m/s. In addition, we find that the printing process preserves several original functional properties of the target material, and as an example of functional printing, we demonstrate printing of phosphorescent images.
RESEARCH ON OVER VOLTAGE RIDE THROUGH ADAPTABILITY AND CONTROL OPTIMIZATION OF WIND FARM

According to the standard, the over voltage ride through assessment point of wind farm is the over voltage side bus of main transformer, and the over voltage ride through test point of wind turbine is the 35kV side of the box transformer. Affected by the impedance of the collection system in the wind farm, the over voltage ride through response of the wind farm and the wind turbine may not be consistent. In this paper, the adaptability of wind farm over voltage ride through is analyzed. Establish equivalent circuit model of wind farm, and analyze voltage distribution in the wind farm when the voltage of the point of connection rises. The main factors affecting the difference between wind turbine and wind farm are extracted. Considering the constraints of wind farm and wind turbine voltage operation, the measures to optimize the operation parameters of the wind farm electrical equipment is proposed, in order to improve the over voltage ride through capacity of the wind farm. Taking an actual wind farm as an example, the simulation results show that the theoretical analysis is correct, and the effectiveness of the proposed measures is verified.
Research on Improving Manufacturing Practice Quality in Mechanical Industrial Design

In order to solve the problems existing in the manufacturing practice of mechanical industrial design, a series of methods and concrete measures are proposed, so as to improve the quality of manufacturing practice of mechanical industrial design. In this study, the problems existing in the manufacturing practice of mechanical industrial design are analyzed detailedly. And the methods and concrete measures including establishing the new mode of manufacturing practice of mechanical industrial design, improving the understanding to manufacturing practice and knowing the major role, establishing a professional characteristic base of manufacturing practice and strengthening the construction of instructor troops of manufacturing practice are proposed, which will certainly have a profound theoretical and practical guiding significance. On this foundation, the research conclusion on improving manufacturing practice quality in mechanical industrial design is done.
All amperes are not created equal-a comparison of current ratings of high-voltage circuit breakers rated according to ANSI and IEC standards

The internationalization of the electrical power equipment market has required engineers to apply equipment designed and built to unfamiliar standards. For high voltage circuit breakers, the two best known standards are the ANSI and IEC standards. Since ratings with similar names have different meanings in the two series of standards, it is vital that application engineers understand the differences. The continuous current, interrupting, short-time and closing current ratings are examined, and these ratings in the two series of standards are compared. <<ETX>>
Nine digital filters for decimation and interpolation

Filtering is necessary in decimation (decreasing the sampling rate of) or interpolation (increasing the sampling rate of a digital signal. If the rate change is substantial, the process is more efficient when the decimation or interpolation occurs in stages rather than in one step. Half-band filters are particularly efficient for effecting octave changes in sampling rate and nine digital filters are presented, eight of them half-band filters, to be used as components of multistage interpolators and decimators. Also presented is a procedure for combining the filters to produce multistage designs that meet a very wide range of accuracy requirements (stopband attenuation to 77 dB, passband ripple as low as 0.00014). The nine filters admit changes between sampling rates above 4W, where W is the nominal bandwidth of the signal. Established design techniques may be used to obtain efficient filters for conversion between 4W Hz sampling and 2W Hz, the "baseband sampling rate. " With these multistage filters, the possible interpolation and decimation ratios are all integer multiples of powers of two. To overcome this restriction we present a simple resampling technique that extends the range of designs to conversions between any two rates. The interpolation or decimation ratio need not be an integer or even rational. In fact, it can vary slightly as in a practical situation where the input signal and output signal are under the control of autonomous clocks. We demonstrate the approach by means of several design examples and compare its results with those obtained from the optimization scheme of Crochiere and Rabiner.
Structure Optimization Design of Axial Flow Check Valve

In order to enhance the performance of axial flow check valve, the nozzle and disk structures are improved. Contrast four different kinds of valve structure by CFD and get the valve structure of minimum flow resistance. By UDF and dynamic grid technology the whole process of the valve opening is simulated and the motion characteristics of the valve are achieved. It can verify the dynamic characteristic of the valve is improved, and the relative error is less than 2%. By analyzing dynamic characteristics of different inlet pressure, the axial flow check valve with optimized structure has reduced flow resistance, improved stability and longer service life.
Deep Learning for Accurate Segmentation of Venous Thrombus from Black-Blood Magnetic Resonance Images: A Multicenter Study

Objective Deep vein thrombosis (DVT) is the third-largest cardiovascular disease, and accurate segmentation of venous thrombus from the black-blood magnetic resonance (MR) images can provide additional information for personalized DVT treatment planning. Therefore, a deep learning network is proposed to automatically segment venous thrombus with high accuracy and reliability. Methods In order to train, test, and external test the developed network, total images of 110 subjects are obtained from three different centers with two different black-blood MR techniques (i.e., DANTE-SPACE and DANTE-FLASH). Two experienced radiologists manually contoured each venous thrombus, followed by reediting, to create the ground truth. 5-fold cross-validation strategy is applied for training and testing. The segmentation performance is measured on pixel and vessel segment levels. For the pixel level, the dice similarity coefficient (DSC), average Hausdorff distance (AHD), and absolute volume difference (AVD) of segmented thrombus are calculated. For the vessel segment level, the sensitivity (SE), specificity (SP), accuracy (ACC), and positive and negative predictive values (PPV and NPV) are used. Results The proposed network generates segmentation results in good agreement with the ground truth. Based on the pixel level, the proposed network achieves excellent results on testing and the other two external testing sets, DSC are 0.76, 0.76, and 0.73, AHD (mm) are 4.11, 6.45, and 6.49, and AVD are 0.16, 0.18, and 0.22. On the vessel segment level, SE are 0.95, 0.93, and 0.81, SP are 0.97, 0.92, and 0.97, ACC are 0.96, 0.94, and 0.95, PPV are 0.97, 0.82, and 0.96, and NPV are 0.97, 0.96, and 0.94. Conclusions The proposed deep learning network is effective and stable for fully automatic segmentation of venous thrombus on black blood MR images.
Monosomy X in isogenic human iPSC-derived trophoblast model impacts expression modules preserved in human placenta

Mammalian sex chromosomes encode homologous X/Y gene pairs that were retained on the male Y and escape X chromosome inactivation (XCI) in females. Inferred to reflect X/Y-pair dosage sensitivity, monosomy X is a leading cause of miscarriage in humans with near full penetrance. This phenotype is shared with many other mammals but not the mouse, which offers sophisticated genetic tools to generate sex chromosomal aneuploidy but also tolerates its developmental impact. To address this critical gap, we generated X-monosomic human induced pluripotent stem cells (hiPSCs) alongside otherwise isogenic euploid controls from male and female mosaic samples. Phased genomic variants of these hiPSC panels enable systematic investigation of X/Y dosage-sensitive features using in vitro models of human development. Here, we demonstrate the utility of these validated hiPSC lines to test how X/Y-linked gene dosage impacts a widely-used model for the human syncytiotrophoblast. While these isogenic panels trigger a GATA2/3 and TFAP2A/C -driven trophoblast gene circuit irrespective of karyotype, differential expression implicates monosomy X in altered levels of placental genes, and in secretion of placental growth factor (PlGF) and human chorionic gonadotropin (hCG). Remarkably, weighted gene co-expression network modules that significantly reflect these changes are also preserved in first-trimester chorionic villi and term placenta. Our results suggest monosomy X may skew trophoblast cell type composition, and that the pseudoautosomal region likely plays a key role in these changes, which may facilitate prioritization of haploinsufficient drivers of 45,X extra-embryonic phenotypes.
Sensitive and quick response micro magnetic sensor utilizing magneto-impedance in Co-rich amorphous wires

New high performance micro magnetic heads and sensors are presented utilizing the giant magneto-impedance (GMI) in the Co-rich amorphous wire. Typical performances or advantageous features of the head and sensor-are as follows; (i) head size can be reduced to about 1 mm maintaining a flux detection sensitivity of about 10/sup -5/ Oe, (ii) a rapid response with the cut-off frequency of 20/spl sim/30 MHz using a wire current of 200/spl sim/300 MHz, (iii) high temperature stability of about 0.01 %FSspl deg/C with a maximum operating temperature of about 180/spl deg/C using a negative feedback loop in the sensor circuit, and (iv) small power consumption of less than 10 mW using a self-oscillation circuit, in which a MI element voltage decreases to zero (100% change) with an external field of about 2 Oe. The basic properties and mechanism of the GMI, the head construction, the sensor construction principle, sensor circuits and sensing applications are discussed. >
HABILITATION THESIS HIERARCHICAL MODELING OF MULTI-ION TRANSPORT THROUGH POROUS MATERIALS

For estimation of the durability of structures, it is highly desirable to quantify and simulate the chloride diffusion process in concrete. To this end, diffusion–cell experiments delivering the chloride diffusivity of cement pastes with different water–cement ratios (related to different microporosities) are evaluated in a scale-transition analysis. For prediction of the apparent chloride diffusivity, cement paste can be modelled by means of a differential homogenization scheme involving nondiffusive spherical inclusions in a diffusive matrix. As a result, chloride diffusivity of cement paste is obtained as a function of the microporosity and the chloride diffusivity in the micropore solution. Remarkably, the latter turns out to be one order of magnitude smaller than the chloride diffusivity in a pure salt solution system. The smaller diffusivity is probably caused by structuring of water molecules along the pore surface of cement paste. D 2004 Elsevier Ltd. All rights reserved.
Current self-balance mechanism in multiphase back converter

Some of the recent applications in the field of the power supplies use multiphase converters to achieve fast dynamic response, smaller input/output filters or better packaging. Typically, these converters have several paralleled power stages with a current loop in each phase and an unique voltage loop. The presence of the current loops is necessary to increase dynamic response (by using current mode control) and to avoid current unbalance among phases. The purpose of this paper is to demonstrate that in CCM, with a proper design, there is an intrinsic mechanism of self-balance that helps a lot in avoiding the current unbalance. Thus, in the buck converter, if natural ZVS is achieved in both transitions, the instantaneous inductor current compensates partially the different dc current through the phases. The need for using n current-loops will be finally determined by the application but not by the converter itself. Using the buck converter as a base, a multiphase converter has been developed. Several tests have been carried out in the lab and the results show clearly that, when the conditions are met, the phase currents are very good balanced even during transient conditions.