nils-herrmann/clean_scirepeval huggingface dataset:
Approximation-Based Adaptive Neural Tracking Control of Nonlinear MIMO Unknown Time-Varying Delay Systems With Full State Constraints

This paper deals with the tracking control problem for a class of nonlinear multiple input multiple output unknown time-varying delay systems with full state constraints. To overcome the challenges which cause by the appearances of the unknown time-varying delays and full-state constraints simultaneously in the systems, an adaptive control method is presented for such systems for the first time. The appropriate Lyapunov–Krasovskii functions and a separation technique are employed to eliminate the effect of unknown time-varying delays. The barrier Lyapunov functions are employed to prevent the violation of the full state constraints. The singular problems are dealt with by introducing the signal function. Finally, it is proven that the proposed method can both guarantee the good tracking performance of the systems output, all states are remained in the constrained interval and all the closed-loop signals are bounded in the design process based on choosing appropriate design parameters. The practicability of the proposed control technique is demonstrated by a simulation study in this paper.
Analysis and improvement of certificateless signature and proxy re-signature schemes

Certificateless cryptography avoids the key escrow problem in identity-based crytosystems and certificate management in traditional public-key crytosystems, it has been researched by many scholars and many certificateless signature schemes have been proposed. However, most of them exist some security drawbacks and are insecure for some kinds of attacks. In this paper, we analyze two certificateless signature schemes and one proxy re-signature scheme proposed by some scholars recently. And we show that these schemes are insecure and also present the detailed attack steps. In order to overcome this problem, we also address some improved schemes which have the same or better performance than the original schemes.
Automatic Recognition of Microarray Images Using Projection Algorithm

To locate the spots in microarray images automatically, we combine the projection algorithm with statistic theory, making the gridding without absence and redundancy. The radius of spots could be estimated based on the improved algorithm, which is an important parameter in segmentation. Adaptive threshold is used to segment the image, and disk template generated automatically is used to detect the spots. The positive and weak spots could be detected correctly, so the methods are not only for the ideal images, but also for the images with many negative spots.
A rectification method for RST invariant digital image watermarking

Based on the log-polar mapping (LPM) and phase-only filtering method, this paper proposes a rectification method that can be used by any image watermarking algorithm to provide robustness against rotation, scaling and translation (RST) transformation. We obtain the RST parameters by calculating the cross-correlation between a template and the magnitude of the image in the corresponding domains. We compare the filter performance by three criteria. The detection accuracy for rotation and scaling is also presented.
A new resonant gate drive circuit with efficient energy recovery and low conduction loss

In this paper, a new resonant gate drive circuit is proposed. The proposed circuit consists of four control switches and a small resonant inductance. The current through the resonant inductance is discontinuous in order to minimize circulating current conduction loss present in other methods. The proposed circuit also achieves quick turn-on and turn-off transition times to reduce switching loss and conduction loss in power MOSFETS. An analysis, design procedure and simulation results are presented for the proposed circuit
A New Approach to Web Services Characterization

Service capability, which represents the actions performed or the information delivered by a service, has become an important issue for service-oriented architecture. But most of the current semantic representation methods for service capabilities are usually based on top-down methodology and there is a gap between the semantic web services approach and the real features of web services. We aim to develop services characterization methods with statistical study on existing web services and to improve services capability representation with bottom-up software services comprehension. In this paper, the main issues for statistical study on existing web services are summarized. Two types of services characterization methods are proposed in our work: quantitative statistical study which used for probing the distribution of main objects in web services and relational statistical study which used for clustering actions or contents and measuring the similarity of web services. We conducted a statistical study on more than four hundred WSDL documents collected from XMethods.net, Amazon and Google and main quantitive statistical results are presented in this paper. A statistical relational model is proposed for mining and recognizing the patterns of services.
Development of micro-fiber array with high-friction and low-adhesion for wafer transfer on a wafer transfer robot

The contact behavior with high-friction and low normal adhesion between a wafer and an end-effector of a wafer transfer robot is crucial to the high efficiency of wafer transfer. In this paper, a novel method of wafer transfer based on micro-fiber array is presented as well as the detailed design of micro-fiber array with high-friction and low-adhesion for wafer transfer. An interaction model is firstly established to obtain the friction and adhesion between micro-fiber array and wafer. Then, four typical failure modes of micro-fiber array are analyzed and a set of structure constraint conditions are established for the design of micro-fiber array with the feature of high-friction and low-adhesion for wafer transfer. A prototype based on SU-8 is prepared, and the experiments results show the prototype is with high friction and low normal adhesion, and capable of improving the efficiency of wafer transfer, which identify the feasibility of this method.
A novel non-isolated ZVS asymmetrical buck converter for 12 V voltage regulators

This paper presents a new non-isolated asymmetrical buck converter. The transformer is used to extend the extremely low duty-cycle of a conventional buck converter. The turn-off loss can be significantly reduced due to the extension of duty-cycle and there is no turn-on loss owing to zero-voltage turn-on condition. At the same time, the voltage stress over the synchronous rectifier (SR) MOSFETs is also reduced. Therefore, the reverse recovery losses of the body diode can also be reduced. Furthermore, MOSFETs with the lower voltage rating and lower Rds(on) can be used to reduce the conduction loss further. To further reduce the turn-off loss above the switching frequency of 1MHz, current-source gate driver can be also applied to this topology. A prototype at switching frequency of 1MHz was implemented and the preliminary experimental results verify the functionality of the new circuit.
Analysis on the instantaneous availability of series repairable systems in cyber warfare environment

Assessing the survivability of mission critical information systems is essential for combat capability analysis in the cyber warfare environments, and the instantaneous availability of system is one of the key indicators for information systems' survivability evaluation. In response to these problems, this paper formulates a network vehicle weapon system as a series repairable system. Then we investigate the probability of reliability and instantaneous availability under our proposed model. The simulation results show that maintenance ability and improved component repair rate are very important to system's reliability and instantaneous availability.
A Practical Copper Loss Measurement Method for the Planar Transformer in High-Frequency Switching Converters

In this paper, a new and practical measurement method is proposed to characterize the planar transformer copper loss operating in a high-frequency switching mode power supply (SMPS). The scheme is easy to set up, and it provides an equivalent winding alternating current resistance, which is the result of all the field effects on the transformer windings to achieve more accurate copper loss characterization. A detailed error analysis for the proposed copper loss measurement method is conducted. The analysis results can provide useful guidelines on the SMPS transformer copper loss measurement scheme design. Measurement results on the copper loss of a planar transformer in a high-frequency dc/dc converter are presented. In order to verify the measurement results, a time-domain finite-element analysis transient solver is adopted to analyze the transformer copper loss. Good matching between the simulation and measurement results is achieved.
An Automatic Approach to Reengineering Common Website with AJAX

Web applications are suffering from poor interactivity and responsiveness towards end users since the conventional browser-based Web applications follow a request-wait response-wait pattern. This pattern leads to high network latency, interface complexity and slow server responsiveness which impair the user experience, decrease customer satisfaction, cut down the number of visits, and, ultimately, reduce revenue to e-businesses. AJAX (asynchronous javascript and XML) is a standards-based programming technique designed to make Web-based applications more responsive, interactive, and customizable. It is becoming increasingly important to reengineer the traditional Web project with AJAX. In this paper, we present a common process to reengineer the traditional Web project with AJAX and develop a tool to do the work swiftly, automatically and efficiently. Compared to reengineer a traditional Web site with AJAX of medium size, our method will save about 90% workload. This is not only useful for the project manager but also beneficial to the customers.
Dual-Resonance-Coupling and Sensing Characteristics in an All-Solid Photonic Bandgap Fiber Interferometer Based on LP01 Cladding Supermodes

A dual-resonance-coupling phenomenon and the sensing characteristics of an in-fiber modal interferometer based on cascaded long period gratings inscribed in an all-solid photonic bandgap fiber are demonstrated. Theoretical and experimental investigations reveal that the dual-resonance dips result from the coupling between fundamental core mode and two different kinds of LP01 cladding supermodes. Due to the deep grooves and asymmetric index distribution along the long period grating caused by side illumination, this dual-resonance interferometer is sensitive to polarization and twist, and the dual-resonance dips according to different LP01 cladding supermodes exhibit different responses to twist. Furthermore, the transmission loss and the resonance wavelength of each interference dip show discrimination in sensitivities of temperature and twist, making it a good candidate for multiple physics parameters measurements.
A Trust Region SQP Method for Coordinated Voltage Control in Smart Distribution Grid

This paper investigates the coordinated voltage control problem for smart distribution grid with the integration of distributed generation (DG). By actively participating in voltage control together with under-load tap changer and shunt capacitors, DG can operate more effectively in the distribution network. The objective of the proposed control method is to minimize the active power loss in the distribution system and to decrease the number of switching device operations while maintaining the grid voltage within the allowable range. Nondispatchable and dispatchable DG are both considered in the control method. To solve the mixed integer nonlinear programming problem, the trust region sequential quadratic programming method is integrated with the branch and bound approach to iteratively approximate the optimization with trust region guidance. Numerical tests on a standard 10-kV distribution system, a real 10-kV distribution system in the Sichuan province of China, and the IEEE 13-bus demonstrate the applicability of the proposed coordinated voltage control method.
Distributing Power Grid State Estimation on HPC Clusters - A System Architecture Prototype

The future power grid is expected to further expand with highly distributed energy sources and smart loads. The increased size and complexity lead to increased burden on existing computational resources in energy control centers. Thus the need to perform real-time assessment on such systems entails efficient means to distribute centralized functions such as state estimation in the power system. In this paper, we present our experience of prototyping a system architecture that connects distributed state estimators individually running parallel programs to solve non-linear estimation procedure. Through our experience, we highlight the needs of integrating the distributed state estimation algorithm with efficient partition and data communication tools so that distributed state estimation has low overhead compared to the centralized solution. We build a test case based on the IEEE 118 bus system and partition the state estimation of the whole system model to available HPC clusters. The measurement from the test bed demonstrates the low overhead of our solution.
An assessment of the performance for double gate Schottky barrier MOSFETs with modulated back gate

A new structure of double gate SB MOSFET in which one of the gates is used to modulate the electric potential distribution (back gate modulated SB MOSFET) is proposed and compared with conventional double gate SB MOSFET and UTB SB MOSFET in terms of off state leakage current, on state current and minimum current, as well as sub-threshold slope(S). The mechanism of SB MOSFET leakage current in off state is analyzed. The influence of back gate voltage on the performance of the SB MOSFETs with various parameters of channel doping, Schottky barrier height and the scalability is investigated. The results can provide a design guideline for further devices optimization
A New Model for Two-Dimensional Electrical-Field-Dependent  $V_{\rm th}$ Instability of pMOSFETs With Ultrathin DPN Gate Dielectrics

The 2-D electrical-field-dependent hot-hole-related negative-bias temperature instability (HH-NBTI) behaviors of pMOSFETs with 1.7-nm decoupled-plasma-nitridation oxynitride dielectrics are investigated. The lateral-channel electric-field-induced turnaround HH-NBTI degradation that is associated with the enhanced breaking effect of the interfacial Si-H bonds at the Si interface is demonstrated. For the first time, the lateral-electric-field-dependent activation energy of ≡ Si- H bond dissociation is presented. A new model taking into account the 2-D electric field effects is proposed to depict the HH-NBTI behaviors related to the lateral- and vertical-channel electric fields. The proposed model is verified by the experimental data.
Design of a humanoid ping-pong player robot with redundant joints

This study investigates the design of a humanoid ping-pong robot system with a 7-DOFs redundant arm. The design of the arm mechanism, real-time binocular vision system, and a distributed control structure was presented. The methods for ball trajectory prediction and motion planning for the ping-pong racket were proposed. A Jacobian pseudoinverse method considering joint limits and manipulability optimization terms is employed to solve inverse kinematics in order to decrease the counterforce exerting on the humanoid robot. The proposed system is validated by a series of rally experiments between the robot and a human.
Cubic convolution interpolation function with variable coefficients and its application to channel estimation for IEEE 802.16 initial downlink

In this study, the authors propose to use the cubic convolution interpolation function with a free variable to generate a class of constant-coefficient interpolation functions. The interpolations functions can be applied to an orthogonal frequency-division multiplexing-based receiver for channel estimation. For a given channel, different interpolation functions from the class have different bit error rates (BERs). Therefore by using a search algorithm, a better interpolation function is chosen with the aid of a performance indicator, such as the estimated mean-squared error (EMSE). Although the uneven distribution of pilots in the IEEE 802.16e system prohibits direct utilisation of the cubic interpolation function, a simple approach has been proposed to solve this problem. The proposed method is validated in the IEEE 802.16e downlink system by Monte Carlo simulation. The simulation results also confirm that channels with different statistical properties should use different interpolation functions. In addition to the Monte Carlo simulation, we also analyse the BER of the proposed approach. We find that the BERs based on the analytical evaluation and on the simulation closely match each other. Finally, it is shown that the EMSE is an acceptable performance indicator for medium-to-high signal-to-noise ratio.
An ISFET design methodology incorporating CMOS passivation

This paper presents a novel methodology for designing CMOS based Ion-sensitive Field-effect Transistors (ISFETs) taking into account the effects of passivation layer degradation. This allows more efficient implementation as well known challenges such as drift, threshold voltage variation, noise and dynamic range can be optimised through this methodology. By introducing a new term representing the influence of both chemical and electrical ISFET device dimensions, a more complete formulation is derived for current-voltage characteristics of the device. Using this, a potential 20% variation in sensing membrane that can result in up to 25% and 400% deviations respectively in trans-conductance and threshold voltage of the FET, can be suppressed to less than 1%. Furthermore this allows design of ISFETs which are less susceptible to variation due to drift. This ultimately allows proper and more accurate usage of ISFETs directly in processing circuitry rather than being used as stand alone sensors.
A novel nonisolated half bridge DC-DC converter

The duty cycle of conventional multi-phase buck converters become extremely small as the output voltage becomes lower and lower. This is a severe challenge with the switching frequency goes up. This paper introduces a non-isolated half bridge converter , which extends duty cycle to a favorable range. Thus, the converter will have symmetrical dynamic response ability. The switching loss will reduce dramatically. The primary current is directly transferred to the output. The energy transferring is more effectively then that of conventional isolated half bridge converter. In addition, the voltage stress of the primary MOSFETs equals to the input voltage, which is much lower than that of non-isolated forward or push-pull topologies. A 12 V input, 1 V/30 A output, 350 kHz prototype was built to demonstrate the advantages
Coordinate Preference DEA Method of Software Project Risk Assessment

In this paper, Considering both positive (preference value is bigger and better) and negative (preference value is smaller and better) factors that affect the risk of software project risk assessment, The coordinate preference risk assessment model of software project based on DEA is established. Conception of risk surface is provided. By introducing fuzzy comprehensive evaluation method based on entropy weight, improved the method of sorting risk by moving risk surface. In the last section, the numerical example is given to verify feasible and valid of the result. This method is not only applicable for software project risk assessment, but also for other similar problems.
4H–SiC Step Trench Gate Power Metal–Oxide–Semiconductor Field-Effect Transistor

In this letter, an improved 4H-SiC step trench-gate power metal-oxide-semiconductor field-effect transistor (MOSFET) with a p-n junction in the trench is proposed. The step trench significantly reduces the ON-resistance of the device. And the p-n junction in the trench reduces the gate charge. Compared with the conventional p+ shielding trench MOSFET structure, simulation results show that the specific ON-resistance and gate charge of the proposed device are improved by 26.4% and 34.7%, respectively. A 43.4% improvement in the figure of merit (including the breakdown voltage and ON-resistance) is also observed.
Applications of tunneling FET in memory devices

Because of the special p-i-n structure of the tunneling FET (TFET), many different composite transistors can be formed with careful device design by combining TFET with MOSFET. In this paper, we propose the special applications of TFET as memory devices. A novel capacitor-less DRAM cell based on floating junction gate (FJG) concept can be configured with TFET. In addition, several different memory cells containing TFET will be discussed.
A comparison study of total variation stokes strategy for low-dose CT image reconstruction

Previous works have demonstrated that the low-dose CT images could be reconstructed by minimizing the total variation (TV) or adaptive weighted total variation (AwTV) of the desired images incorporate data fidelity term. However, due to the piecewise constant assumption of TV model, the reconstructed images are frequently reported to suffer from the undesired patchy artifacts or stair-case effects. In our previous work, we found that these drawbacks could be eliminated by using the total variation stokes-projection onto convex set (TVS-POCS) method for both sparse-view and low-mAs data. In this study, we further validated the benefits of the TVS-POCS method compared to the TV model based adaptive steepest descent-projection onto convex set (ASD-POCS) and AwTV-POCS methods, and both qualitative and quantitative studies were performed using digital Shepp-Logan phantom, Catphan 600 physical phantom and clinical data. The results reveal that the TVS-POCS method can yield images with several noticeable gains, measured by the universal quality index, the full-width-at-half-maximum merit and standard deviation, as compared to its corresponding TV-based algorithms.
A method for hand-eye calibration of a robot vision measuring system

Hand-eye calibration of a robot vision measuring system that the linear structured light vision sensor was mounted on the end-effect of the robot was researched. A calibration method using a circle with a pair of orthogonal diameters as the calibration target was proposed, which the measuring coordinate system is established in the robot base coordinate system. The hand-eye calibration equation was deduced using the robot kinematical parameters, the coordinates of the calibration points in the robot base coordinate system and the computed camera extrinsic parameters relative to the circle target. The real experimental results show that the process of calibration is simple, easily completed and precision is high.
Abstraction on sensor network and representation with a virtual layer

Research on sensor network has been focused at overcoming these deficiencies through more energy efficient routing, localization algorithms and system design. This paper tried to discuss some application related challenges, such as data integration, data storage, metadata generation, data fast query. We use analytical data management concept to create a virtual layer, which maps the real sensor network into abstract nodes through base nodes. This virtual layer helps applications use/reuse data from the sensor network, and provides functions including data acquisition, calculation, linkage, and broken management. This abstraction and virtual representation is shown with a web service (data integrity) for a building monitoring system.