Miracle-dz/UniFAR-FTUs huggingface dataset:
Learning-Based Task Offloading for Marine Fog-Cloud Computing Networks of USV Cluster

In recent years, unmanned surface vehicles (USVs) have made important advances in civil, maritime, and military applications. With the continuous improvement of autonomy, the increasing complexity of tasks, and the emergence of various types of advanced sensors, higher requirements are imposed on the computing performance of USV clusters, especially for latency sensitive tasks. However, during the execution of marine operations, due to the relative movement of the USV cluster nodes and the network topology of the cluster, the wireless channel states are changing rapidly, and the computing resources of cluster nodes may be available or unavailable at any time. It is difficult to accurately predict in advance. Therefore, we propose an optimized offloading mechanism based on the classic multi-armed bandit (MAB) theory. This mechanism enables USV cluster nodes to dynamically make offloading decisions by learning the potential computing performance of their neighboring team nodes to minimize average computation task offloading delay. It is an optimized algorithm named Adaptive Upper Confidence Boundary (AUCB) algorithm, and corresponding simulations are designed to evaluate the performance. The algorithm enables the USV cluster to effectively adapt to the marine vehicular fog computing networks, balancing the trade-off between exploration and exploitation (EE). The simulation results show that the proposed algorithm can quickly converge to the optimal computation task offloading combination strategy under heavy and light input data loads.
Polynomial Cancellation Coded DFT-s-OFDM for Low-PAPR Uplink Signaling

The physical layer signaling of the 5G new radio still utilizes cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) and discrete Fourier transform-spread-OFDM (DFT-s-OFDM) to support 5G services for the sake of system-backward compatibility. However, the transmission requirements among these services differ, and this poses a challenge to the adaptability of the waveforms with regard to the peak-to-average power ratio (PAPR) issue. In particular, DFT-s-OFDM serving as a low-PAPR option for uplink signaling still has room for PAPR improvement in cases such as machine-type and device-to-device communications. We propose polynomial cancellation coded (PCC)-DFT-s-OFDM to flexibly reduce the PAPR of conventional DFT-s-OFDM. The principle of the proposed method, including its transform, is analyzed in the time domain. The results show that it can also be regarded as a novel spectral shaping scheme for PAPR reduction. Through a parameter designed for adjusting the cost of spectral efficiency, the proposed method can regulate the extent of improvement compared with the conventional DFT-s-OFDM, not only in the PAPR, but also for the spectral radiation and bit error rate when considering the nonlinearity of the power amplifier. The increase in computational complexity is neglectable owing to the simplicity of generalized PCC, making it apt to be deployed in existing systems.
Mode Coupling in the Solar Corona. V. Reduction of the Coupled Equations

A simplified version of the mode-coupling theory of Clemmow and Heading is developed by reducing the set of coupled equations to two for the magnetoionic theory and three for the MHD theory. The simplified theory reproduces known results for coupling in the neighbourhood of coupling points. It is used to treat coupling between the MHD waves, and it is found that coupling between the fast mode and the Alfven mode for VA ;? ; C, is stronger than the coupling between any other pair of modes. The strongest coupling of all is between the Alfven and slow (magnetoacoustic) modes for VA ~ C,.
Voltage Control Method for Active Distribution Networks Based on Regional Power Coordination

As loads connected to active distribution network (ADN) grow, ADN’s voltage safety issues are becoming more serious. At present, the solution is mainly to build more distributed generation (DG) or to adjust the reactive power in the whole network, but the former needs a lot of investment while the latter requires a large amount of communication equipment and it takes a long time to calculate the adjustment amount of reactive power and to coordinate reactive power compensation equipment. When the loads are heavy, there will still be drawbacks of insufficient reactive power. Therefore, this paper analyzes the relationship between the active power, reactive power, and the voltage in the ADN. Through the autonomous region (AR) division, a voltage control method based on the active power variation and adjustable power in the AR is proposed. According to the relationship between the amount of active power and the adjustable amount active power, the active power control, the reactive power control, and the coordinated control of active power reactive power control are adopted to adjust the DGs’ output to stabilize the bus voltage. The simulation results show that the proposed method can effectively improve the voltage control capability of ADN and can enable it to operate normally under greater power changes. Through the control method in this paper, the communication requirements are greatly reduced and the calculation time is effectively shortened and is more adaptable.
Innovation in Construction Materials-A Review

This study was carried out to review different types of available innovative construction materials. It was found that advancement in nanotechnology, use of mineral admixture, glass and plastic, biological materials, wood and other construction materials have contributed significantly to the growth of discovery and production of innovative construction materials. The implementation of some innovative construction materials, meets the requirements for sustainability, durability, reliability, safety, cost reduction, increasing quality, better mechanical and physical characteristics, flexibility in extreme conditions and locations, simple assembly and environmentally friendly. Construction materials used to carry out project consumed about 40% of the entire cost of the project in the construction industry. The success stories were recorded in the area of turning industrial and agricultural wastes to wealth. This reviewed paper will enrich the database for innovative materials entering the construction industry.
Reliable interoperation of demand response entities considering reputation based on blockchain

Demand response (DR) in the smart grid will promote the stable operation of the power system and reduce economic costs effectively. However, uncertainty of users' behavior becomes a barrier of DR, in which the credibility between the DR users and aggregators will have a crucial impact on the DR. Blockchain is a new technology to solve the trust problem without third‐party endorsement, which has the advantages of decentralization and irreversibility. Considering the difference of computing capability between users and aggregators, this article proposes a blockchain‐based strategy to support the bidirectional selection between DR users and aggregators based on reputation values, which improves the success rate of the DR and mitigates the impact of user behavior on the DR. At the same time, this strategy can also increase the enthusiasm of users with a high reputation value to participate in DR. Using the network topology and DR incentive rules of Suzhou, Jiangsu Province, the rationality of blockchain‐based reliable interoperation for DR entities proposed in this paper is verified. © 2019 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.
UWB antenna and MIMO antennas with bandwidth, band‐notched, and isolation properties for high‐speed data rate wireless communication: A review

The prospective of ultrawide band (UWB) technology is enormous due to its remarkable advantages such as the capability of providing high‐speed data rates at short transmission distances with low power dissipation. The swift growth in wireless communication systems has made UWB an exceptional technology to replace the conventional wireless technologies in today's use. UWB bandwidth (3.1‐10.6 GHz) covers most of the communication applications. High frequency of operation with high level of miniaturization has enhanced the interest in designing high performance antennas. There is a growing demand for small and low cost UWB antennas that are able to provide satisfactory performance in both time and frequency domains. The trend in recent wireless systems, including UWB based systems, are to build small, low‐profile integrated circuits so as to be compatible with portable wireless devices. Transformation of UWB in MIMO achieved high data rate and solved the problem of multipath propagation. The main reason for writing this review is to investigate various UWB methods and band rejection approaches on a single platform. Some of the isolation enhancement approaches are also included in article due to the requirement in MIMO antennas.
A Multiphase Switched-Capacitor Converter for Fully Integrated AMLED Microdisplay System

A fully integrated switched-capacitor (SC) dc–dc converter is designed for powering up an active-matrix light-emitting diode (AMLED) microdisplay system. The stacking-transistor technique with three voltage conversion ratios is utilized to handle the lithium-ion battery range of 2.6–4.2 V and to reduce the switching loss. A 101-phase interleaving scheme is adopted such that, first, output voltage ripple $\Delta V_{{\rm{O}}}$ is significantly reduced; second, no external output capacitor is needed; and, third, SC power-cells are physically cascaded to encircle the LED array and drivers to reduce conduction loss. Two test chips were designed in the 0.18-μm 1P6M CMOS technology. The first chip is a test chip comprising the SC converter only. The output voltage is 4.2 V, and the measured maximum $\Delta V_{{\rm{O}}}$ is 52 mV. The measured power density is 74.4 mW/mm2, peak efficiency is 81%, and maximum output power is 258 mW. The second chip is a system chip integrating the SC converter with the AMLED array and drivers using flip-chip packaging. The converter delivers a maximum power of 216 mW with a 78% peak efficiency in the SC mode and a 91% peak efficiency in the linear regulator mode.
Construction and Application of Formative Assessment System of Software Engineering

Software Engineering is a discipline that studies the construction and maintenance of effective, practical and high-quality software using engineering methods. The traditional teaching method is teacher-centered and focuses on teaching software engineering theory instead of practice skills, which leads to the final evaluation of the course is usually determined directly by the final exam. Therefore, the reform of the evaluation mechanism of Software Engineering course is important to construct a reasonable formative assessment system, which will guide students to form good study habits and inspire students' enthusiasm for learning. This paper attempts to design a practical formative assessment system based on the teaching experience of the course of software engineering in School of Information Science and Engineering of Linyi University. It is implemented with the students of the 2016 Software Engineering major, which has achieved satisfactory results.
Parameter Identification and Lyapunov Function Based Adaptive Switched Control for Underwater Electroacoustic Transduction System

The underwater electroacoustic transduction system is widely used in underwater navigation, ranging, and communication. However, it is difficult to control the current of the giant magnetostrictive transducer (GMT) for a voltage mode amplifier, because nonsinusoidal waves without constant fundamental frequencies may be required, and the load parameters of the GMT vary greatly with its working frequency, current, and condition. A parameter online identification algorithm is proposed for the GMT, where only one matrix inversion and one filtering for a two-dimensional matrix are required. A discretized switched control is derived, which selects the subsystem minimizing the Lyapunov function of tracking error in each control period. In addition, a switching state selection method making the switching frequencies lower and consistent is also used to cooperate with the switched control. Finally, the adaptive switched control is experimentally verified on the designed 1-kW electroacoustic transduction platform.
A multiple-center clinical study on the therapy for childhood acute lymphoblastic leukemia by using GZ-2002 ALL protocol

Objective To investigate the possibility of multiple-center cooperation on chemotherapy for childhood leukemia,and explore new strategies of enhancing the cure rate of childhood leukemia in Guangzhou,China.Methods Seven main hospitals in Guangzhou attended in our study group,and the Wales Hospital of HongKong Chinese University attended as a consultant.One person was appointed to be in charge of the therapeutic work in each hospital,and another full-time administrator took charge of all the records.All the patients enrolled in the standard risk(SR) group or interim risk(IR) group according to the diagnosis standards were treated with GZ-2002 ALL protocol.The material records were sorted out and analyzed.A discussion meeting was held among our members of the group twice a year.Results Six hundred and seventeen cases were initially enrolled in the seven hospitals from Oct.of 2002 to June of 2009.The children were diagnosed as ALL according to the GZ-2002ALL chemotherapy regimen.All cases were classified into SR,IR,and HR regarding cytomorphology(M),immunology(I),and cytogenetics(C) and response to the first chemotherapy.A total of 446 patients were included in the research and treated with the GZ-BFM2002ALL chemotherapy regimen.They consisted of 227 males and 169 females,ranging in age from one to 14 years,with an average of 6 years.The GZ-2002ALL chemotherapy regimen was established based on the ALLIC-BFM2002 regimen.The regimen lasted for 104 weeks,consisting of induction,consolidation,re-induction and maintenance.The total complete remission rate in induction of SR or IR was 99.8%(445/446). The 3-year EFS was(90.5±5.0)% and the 5-year EFS was(82.0±4.0)% in the SR group,while they were respectively(88.0±6.0)% and(78.0±5.0)% in the IR group.There was a statistically significant difference between groups by Log-rank test(P0.05). Four hundred and thirteen ALL children were followed up,accounting for 92.6% of all.There were 339(82.1%) cases with EFS,consisting of 267(78.8%) cases with DFS and 72(21.2%) cases in the maintenance period.Seventy-eight cases of events were observed,including 47(11.4%) cases of recurrence,20(4.8%) cases of non-recurrent death,8(1.9%) cases of long-term toxicities,and 3(0.7%) cases of new tumors.Among the recurrent cases,there were 24 deaths(including 6 cases of treatment discontinuation following recurrence) and 23 survival cases with disease.The median time to death was 7.9 months(range from 1.5~23 months). Five of them were missing following drug discontinuation,and 28 were missing due to going abroad,home relocation,address change,and migration to other provinces.Conclusion The therapeutic efficacy of GZ-2002 ALL protocol for childhood leukemia chemotherapy is approving,and the mode of multiple-center investigation is demonstrated successful.All these will contribute to conducting extensive cooperation of work groups in China.
Internalization of Quality Management Standards: A Literature Review

Abstract This work examines the literature on the internalization of quality management standards via database searches (Web of Science, Emerald, ScienceDirect, and ABI/Inform-ProQuest). This review describes the characteristics of the relevant literature (theoretical or empirical, countries of study, and methods used), the internalization process (two constructs to measure internalization and items under each construct), drivers (reasons for seeking certification, quality culture, leadership, and training), and the effects of internalization (customer, people, and social results). Engineering managers can consider these aspects and associated drivers when they seek to improve the current processes and performance of their firms. On the basis of this review, this article identifies gaps in the literature and proposes future research areas.
Modulation and Voltage Balancing of a Five-Level Series-Connected Multilevel Inverter With Reduced Isolated Direct Current Sources

The series connection of low-power modules is an alternative solution to realize a multilevel inverter. Unlike a cascade connection, the series connection approach significantly reduces the number of isolated dc sources, thereby the design complexity, cabling of the transformer, and overall system cost become low. In this article, the operation of the series-connected multilevel inverter is presented for a five-level operation, and it is realized by using two three-level half-bridge diode clamp converter modules per phase. Hence, each phase of the series-connected multilevel inverter requires a single isolated dc source. In the series-connected multilevel inverter, the net dc-bus voltage will be equally distributed between four dc-bus capacitors. Therefore, the converter generates a multilevel voltage waveform with uniform steps and ensures equal voltage stress on the semiconductor devices. To achieve these objectives, a space vector pulsewidth modulation scheme with an additional voltage balancing approach is employed. The feasibility of series-connected multilevel inverter is validated through simulations and a scaled-down laboratory prototype under steady-state and transient conditions.
A Preliminary Study on Chemical and Physical Properties of Coconut Shell Powder as an Enhancer in Building Ceilings for Construction Industry: A Mini Review

It is necessary to carry out study on the historical behaviour of coconut shell (CS) on different kind of materials so as to appraise its potential in utilizing industrial waste for building ceiling. A study of the characteristics of coconut shell as an additive on metals and materials as reported in literature will help forecast its performance on service. The trend of waste to wealth, smart manufacturing and eco-friendliness of product have been a focal area of research to proffer an enabling environment and enhanced lifestyle for human. This paper therefore explores the potential of this agro waste, its thermo-mechanical properties, chemical composition and its application to the industry.
DESIGN OF RECONFIGURABLE MONOPOLE ANTENNA WITH SWITCHABLE DUAL BAND-NOTCHES FOR UWB APPLICATIONS

A reconfigurable antenna with on-demand single-band or dual-band rejection capability for ultra-wideband (UWB) applications is presented. A modified monopole structure is integrated with a U-shaped slot and an open-ended slot to realize band-rejection. The antenna operates in four modes: a full UWB (3.1–10.6 GHz) coverage antenna, a UWB antenna with a single-band WiMax or wide local area network (WLAN) rejection, and a UWB antenna with dual-band WiMax/WLAN rejection. On-demand single and dual-band rejections are implemented by controlling two slots using two PIN diodes. Thus, the adopted control technique is quite easy and requires low operating power. Details of the design process and reconfiguration mechanism are presented. The band-rejection performance is explained by return loss and surface current distribution at single-band mode. A prototype is built on a Rogers substrate and tested to validate the performances. The antenna exhibits stable radiation characteristics and almost flat gain responses across the whole band, while significantly gain reduction is achieved at the rejected bands. Therefore, this antenna is suitable for high-performance UWB systems in WiMax/WLAN dense environments with the aim to improve signal quality, system capacity, and communication efficiency.
Multi Response Optimization of Green Sand Moulding Parameters Using Taguchi-DEAR Method

Green sand casting is treated as the most versatile casting process due to their excellent design flexibility that offer complex shapes and ability to reclaim silica sand. The modern foundries are looking for alternate moulding materials to partially replace the high cost silica sand. Cow dung is a naturally available eco-friendly binding as well as additive material and is used to partially replace the silica sand. Improper choice of the combination of moulding sand variables, such as degree of ramming, percentage of cow dung, percentage of clay, and percent of water will affect the moulding sand properties and thereby quality of casting. In the present work, Taguchi method is employed to plan and conduct experiments. Pareto analysis of variance is performed to know the contribution of variables on the moulding sand properties (i.e. compression strength, permeability, loss-on-ignition). Taguchi DEAR method is used to determine the single optimal levels of input factors that enhances the performances of all the sand mould properties. Percent of clay and cow-dung found to be the most dominating factor towards all the sand mould properties.
All-Optical Switching and Multiple Logic Gates Based on Hybrid Square–Rectangular Laser

All-optical switching and multiple logic gates are experimentally demonstrated using AlGaInAs/InP hybrid square-rectangular lasers. Controllable bistability induced by saturable absorption in the square microcavity is achieved around the threshold with the square cavity in an open circuit state. Based on the bistability, all-optical switching operation is realized by injecting set/reset optical signals with the wavelengths around the lasing mode of 1529.9 nm and another high-Q mode at 1560 nm. Furthermore, mode competitions between three resonant modes around 1541 nm with an interval of 1.2 nm are used to realize all-optical multiple logic gates of NOT, NOR, and NAND functions under low-power optical pulses, with injecting currents to the square and rectangular sections. The static extinction ratio of 34, 40 and 24 dB are obtained for NOT, NOR, and NAND gates, respectively, and the dynamic extinction ratio over 10 dB of NOT function at 15 Gb/s, NOR and NAND functions at 2 Gb/s are demonstrated. With the merits of multifunctional operations, large optical injection wavelength tolerant ranges, low power consumption, small footprint and suitability for on-chip integration, the device offers a potential solution for all-optical signal processing in photonic integration circuits.
Voltage Grid Supporting by Using Variable Structure Adaptive Virtual Impedance for LCL-Voltage Source Converter DG Converters

This article proposes a voltage grid supporting applied for DGs based on LCL-VSC to control the delivered power flow and improve the point of common coupling (PCC) voltage regulation. A variable structure adaptive virtual impedance (VS-AVI) imposes the required DG impedance for achieving the system voltage requirements, considering the power rating of the DG converter. Differently of the solutions presented in the literature, the proposed VS-AVI employs adaptive piecewise linear droop function and dead zone for emulating the virtual capacitance for shaping the equivalent grid impedance and achieves the required PCC voltage regulation. Simulation and experimental results validate the proposed VS-AVI and demonstrate its effectiveness.