bluuebunny/crossref_metadata_2025 huggingface dataset:
Simple control scheme buck-boost DC-DC converter for stand alone PV application system
Authors: Zulkifli M. Z. , Azri M. , Alias A. , Talib Md. H. N. , Lazi J. M.
Published: April 2019

In this paper a buck-boost dc-dc converter for pv application is proposed, which is mainly composed of a buck – boost converter, PV panel, load and a battery. Existing dc-dc converter can convert the power from the PV panel, but unfortunately the PV panel can only provide power when there is a high intensity of light. In order to provide power supply to the load without any interruption, buck-boost dc-dc converter is introduced. The power intermittency issue of PV panel can be overcome with the aid of a secondary supply which is in this case, the batter. The integration system between the primary and the secondary supply is controlled by a simple proposed control scheme. Battery act as a power in the low voltage side while PV panel is taking over in the high voltage side. Buck-boost converter is operated either is buck or boost mode according to the performance of the PV panel. This paper is presented the simple control scheme to decide the mode suitable for the buck and boost mode. Various conditions are simulated to verify the working operation of the buck-boost converter and to representing solar panel in real life. Simulation and experimental are carried out to verify the system.
Recommendations and solutions to remove some barriers to the deployment of smart grid in Morocco
Authors: Habachi Rachid , Touil Achraf , Boulal Abdellah , Charkaoui Abdelkabir , Echchatbi Abdelwahed
Published: April 2019

In this paper, we identify the current state and prospects of smart grids in Morocco. We begin by describing the current state of the Moroccan network, then we study the obstacles to the development of smart grids in Morocco and internationally. We conclude with recommendations and solutions to remove some barriers to the deployment of intelligent electrical networks in Morocco.
Performance enhancement in a multilevel inverter fed PTC induction motor drive by optimal voltage vector selection
Authors: T Himabindu , Teja A.V. Ravi , Bhuvaneswari G , Singh Bhim
Published: April 2019

This paper proposes a novel predictive control strategy for a multilevel inverter fed Induction Motor Drive (IMD) with optimal voltage vector selection at every sampling interval. The proposed predictive control strategy, apart from enhancing the dynamic speed and torque responses of the drive, strives to reduce the number of switching transitions by choosing optimal voltage vector, thereby reducing the switching losses significantly. The algorithm put forth here chooses the most suitable switching state among the redundant switching combinations, such that minimum number of switches change their states from the previous switching combination to the present one. This results in perceptible reduction in the switching losses thereby increasing the efficiency of the converter. The proposed Predictive Torque Control (PTC) strategy is modeled and simulated in Matlab/ Simulink environment and the results are reported for a 2-level and 3-level inverter fed IMD configurations. The results demonstrate the effectiveness of the proposed PTC for both 2-level and 3-level inverter fed IMDs.
The Influence of Non-planar (Spatial) Links in the Static Characteristics Behavior of Planar Parallel Manipulator
Authors: Mangavu Ganesh , R Karthikeyan. , P Venkitachalam. , G Guruguhan . , Shrinithi S. , S Kannan. , Dash Anjan Kumar
Published: April 2019

Conventional planar manipulators have all their links in a single plane. Increasing payload at the end-effecter/mobile platform can induce high stress in the links due to cantilever nature of links. Thus it limits the total vertical load that can be applied on the mobile platform. In contrast to the links in conventional planar parallel mechanisms, non-planar links are proposed in this paper, i.e., links are made inclined to the horizontal plane and non planar legs are constructed. Although the links are made non-planar, the rotary (or prismatic) joints axes remain perpendicular (or parallel) to the plane of the base platform, which retains the planar motion of the end-effecter. For studying the application of such non planar links in planar manipulators, new models of inertia, stiffness and leg dynamics have to be developed. In this article, these models are developed and with the developed models, the static analysis is done on the planar manipulators with non-planar links and the performance is compared with the corresponding conventional planar manipulators.
Application of Unified Power Flow Controller to Improve Steady State Voltage Limit
Authors: E. Mubeen Samina. , Khan Baseem , K. Nema R.
Published: April 2019

This paper utilizes the voltage source model of Unified Power Flow Controller (UPFC) and examines its abilities in mitigating the steady state stability margins of electric power system. It analyzes its behavior for different controls strategies and proposes the most efficient mode of controlling the controller for voltage stability enhancement. A systematic analytical methodology based on the concept of modal analysis of the modified load flow equations is employed to identify the area in a power system which is most prone voltage instability. Also to identify the most effective point of placement for the UPFC, a computer program has been developed using MATLAB. The results of analysis on 14 bus system is presented here as a case study.
Comparative Study Entered New Approach FMV and Control SFR for Active Compensation of Harmonic Currents in Shunt Active Power Filter
Authors: Benyettou Loutfi
Published: April 2019

In this article, we discuss the problem of degradation of current in electrical installations, which follows directly from the proliferation of non-linear loads, to solve it, we used a two-level inverter as a parallel active filter, which injects current harmonics at the connection point with two compensation methods the method of instantaneous active and reactive power (pq method and pq method with MVF) method binds to the repository synchronization. We will highlight two control strategies by hysteresis and PWM. Simulation results using Blok set Power System (PBS)/ Simulink Matlab show reduced THD in accordance with standard IEEE-519.
Dynamic Control of Mobile Robot Using RBF Global Fast Sliding mode
Authors: Mallem Ali , Slimane Noureddine , Benaziza Walid
Published: April 2019

This paper mainly In this paper a dynamic control of mobile robot using RBF global fast sliding mode (RBF-GFSM) strategy is presented. Firstly a GFSM controller is used in order to make the linear and angular velocities converge to references ones in finite time. However a problem of instability of velocities is appeared by introducing disturbances in the system. Secondly, a combined controller using RBF-GFSM approach is applied in aim to stabilize the velocities errors and estimates the nonlinear function of the robot model. The system stability is done using the lyapunov theory. The proposed controllers are dynamically simulated using Matlab/Simulink and the simulations results show the efficiency and robustness of the proposed control strategy.
A Novel FPGA based Leading One Anticipation Algorithm for Floating Point Arithmetic Units
Authors: Deshmukh Ashwini Suresh
Published: April 2019

In multimedia Systems-on-Chips, the design of specialized IEEE-754-compliant floating point arithmetic units (FPU) is critical with respect to both operating speed and silicon area demand. Leading one anticipation is a well-known issue in the implementation of high speed FPUs. We investigated a novel leading one anticipation algorithm allowing us to significantly reduce the anticipation failure rate with respect to the state-of the art. We embedded our technique into a complete FPU and compared its performance against existing solutions, definitely showing both area savings and total latency reduction.
Vehicle Accident Automatic Detection and Remote Alarm Device
Authors: Goud Varsha
Published: April 2019

The Rapid growth of  technology and infrastructure has made our lives more easy . The advent of technology has also increased the traffic hazards and the  road  accident take place frequently which causes huge loss of life and property because of the poor emergency facilities. Our project will provide an optimum solution to this draw back. An accelerometer can be used in a car alarm application so that dangerous driving can be detected . It can be used as a crash or rollover detector of the vehicle during and after a crash. With signals from an accelerometer, a severe accident can be recognized. According to this project when a vehicle meets with an accident immediately Vibration sensor will detect the signal or if a car rolls over, an Micro electro mechanical system(MEMS) sensor will detects the signal and sends it to ARM controller. Microcontroller sends the alert message through the GSM MODEM including the location to police control room or a rescue team. So the police can immediately trace the location through the GPS MODEM, after receiving the information. Then after conforming the location necessary action will be taken. If the person meets with a small accident or if there is no serious threat to anyone`s life, then the alert message can be terminated by the driver by a switch provided in order to avoid wasting the valuable time of the medical rescue team.

This paper is useful in detecting the accident precisely by means of both vibration sensor and Micro electro Mechanical system(MEMS) or accelerometer. As there is a scope for improvement and as a future implementation we can add a wireless webcam for capturing the images which will help in providing driver`s assistance.

Keywords - Accident ,Automatic Detection, Micro electro Mechanical system , Remote Alarm Device, Vehicle
FPGA Implementation of a 64-Bit RISC Processor Using VHDL
Authors: Mohammad Imran , K Ramananjaneyulu
Published: April 2019

In this paper, the Field Programmable Gate Array (FPGA) based 64-bit RISC processor with built-in-self test (BIST) feature implemented using VHDL and was, in turn, verified on Xilinx ISE simulator. The VHDL code supports FPGA, System-On-Chip (SOC), and Spartan 3E kit. This paper also presents the architecture, data path and instruction set (IS) of the RISC processor. The 64-bit processors, on the other hand, can address enormous amounts of memory up to 16 Exabyte’s. The proposed design can find its applications in high configured robotic work-stations such as, portable pong gaming kits, smart phones, ATMs. 
Design and Development of Texture Filtering Architecture for GPU Application Using Reconfigurable Computing
Authors: Naik Dessai Sanket Suresh
Published: April 2019

Graphical Processing Units (GPUs) have become an integral part of today’s mainstream computing systems. They are also being used as reprogrammable General Purpose GPUs (GP-GPUs) to perform complex scientific computations. Reconfigurability is an attractive approach to embedded systems allowing hardware level modification.  Hence, there is a high demand for GPU designs based on reconfigurable hardware. The texture filter unit is designed to process geometric data like vertices and convert these into pixels on the screen. This process involves number of operations, like circle and cube generation, rotator, and scaling. The texture filter unit is designed with all necessary hardware to deal with all the different filtering operations. The designed texture filtering units are modelled in Verilog on Altera Quartus II and simulated using ModelSim tools. The functionality of the modelled blocks is verified using test inputs in the simulator.Circle and cube coordinates are generated for circle and cube generation. The work can form the basis for designing a complete reconfigurable GPU.
Configurable Router Design for Dynamically Reconfigurable Systems based on the SoCWire NoC
Authors: Farhadi Beldachi Arash , Hosseinabady Mohammad , Nunez-Yanez Jose Luis
Published: April 2019

New Field Programmable Gate Arrays (FPGAs) are capable of implementing complete multi-core System-on-Chip (SoC) with the possibility of modifying the hardware configuration at run-time with partial dynamic reconfiguration. The usage of a soft reconfigurable Network-on-Chip (NoC) to connect these cores is investigated in this paper. We have used a standard switch developed with the objective of supporting dynamically reconfigurable FPGAs as the starting point to create a novel configurable router. The configurable router uses distributed routing suitable for regular topologies and can vary the number of local ports and communication ports to build multi dimensional networks (i.e., 2D and 3D) with different topologies. The evaluation results show that the selection of the ideal router is different depending on traffic patterns and design objectives. Overall, the mesh network with a four local ports router offers a higher level of performance with lower complexity compared to the traditional mesh with one local port router.
Decision Based Median Filter algorithm using Resource Optimized FPGA to Extract Impulse Noise
Authors: Kulkarni Rutuja Nandkumar , Bhaskar Pradip C
Published: April 2019

Median filter is a non-linear filter used in image processing for impulse noise removal. It finds its typical application in the situations where edges are to be preserved for higher level operations like segmentation, object recognition etc. This paper presents an accurate and efficient noise detection and filtering algorithm for impulse noise removal. The algorithm includes two stages: noise detection followed by noise filtering. The proposed algorithm replaces the noisy pixel by using  median value when other pixel values, 0’s or 255’s are present in the selected window and when all the pixel values are 0’s and 255’s then the noise pixel is replaced by mean value of all the elements present in the selected window. Similarly algorithm checks for five different conditions to preserve image details, object boundary in high level of noise densities. This median filter was designed, simulated and synthesized on the Xilinx family of FPGAs (XC3S500E of Spartan-3E). The VHDL was used to design the above 2-D median filter using ISE (Xilinx) tool & tested & compared for different grayscale images.
NIOS II Based Secure Test Wrapper Design for Testing Cryptographic Algorithms
Authors: Kannan Chakrapani
Published: April 2019

Cryptographic algorithms need infrastructure for testing them against security attacks. Normally many methods are proposed for testing these cryptographic primitives. Normal designs cannot be applied to all types of cryptographic chips. Usually build in self test is applied for the intellectual property chips for testing them. But it suffers from many problems such as side channel attack, backholes, high area overhead, etc.., to overcome all these drawbacks test wrapper is designed and tested using NIOS II economy soft core processor.  NIOS II is utilized as the soft core processor and cryptographic algorithms are executed. RTL view of these cryptographic circuits is described. Synthesis result shows the chip planner view of the circuits and the area required for the logic elements. NIOS II soft-core processors perform well for testing the cryptographic algorithms. Results with respects to area optimization, memory and speed are discussed. The logic components required for design using NIOS II is optimized. Memory required is also less compare to other processors. Area required is optimized using NIOS II processor and it is flexible for design of complex circuits.
Design and Implementation of Recursive Least Square Adaptive Filter Using Block DCD approach
Authors: S. Khanande Sachin , Honade S.J.
Published: April 2019

Due to the explosive growth of multimedia application and tremendous demands in Very Large Scale Integrated (VLSI), there is a need of high speed and low power digital filters for digital signal processing applications. In Digital Signal Processing (DSP) systems, Finite Impulse Response (FIR) filters are one of the most common components which is used, by convolving the input data samples with the desired unit sample response of the filter. The proposed work deals with the design and implementation of RLS adaptive filter using block DCD approach. The evaluation of speed, area and power for proposed work will be done. Also, the comparison of the proposed design with the existing will be carried out for various input combinations.
An Encyclopedia Coverage of Compiler’s, Programmer’s & Simulator’s for 8051, PIC, AVR, ARM, Arduino Embedded Technologies
Authors: Nayyar Anand
Published: April 2019

In today’s world, everything from small needle to airplane engineering is surrounded by embedded systems. Embedded System technology not only lays foundation for development but is also acting as Backbone for mankind in almost in every area of science, engineering, research and daily living. The world of embedded systems is mainly surrounded by: Microcontrollers and Microprocessor’s. To work in the area of Embedded Systems design and development is both interesting and challenging- Interesting in the sense, as everything is getting intelligent, advanced and feature rich day by day and the embedded system’s field is progressing by leaps and bounds. But challenging in the way, that resources are very limited in terms of design and implementation. The most important crucial challenges nowadays in front of embedded system engineers are- Which programmer to Use? Which compiler to use for source code development? Which simulator to use to simulate the overall behavior of system? As every compiler, programmer and simulator has distinct features, so selecting the best one as per one’s requirement has always remained a challenge. The main aim of this research paper is to overcome that difficulty by providing the researchers and embedded system engineers an encyclopedic platform of compilers, programmers and simulators for all sorts of embedded system technologies like 8051, PIC, ARM, AVR and Arduino so that choosing of the best platform in terms of compiler, programmer and simulator can become easy and time saving for everyone working in this area.
GSM Based Generator Monitoring System for Steel Melting Shop
Authors: Boopathi S. , Jagadeeshraja M. , Manivannan L.
Published: April 2019

Steel making processes are highly energy intensive and comprised of many complex unit operations. Iron ore and coal need preprocessing before feeding into a reactor, and molten metal from different reactors needs to be carefully drawn into a solid metal and then rolled into sheets. Each of these operations has a stake in the quality of steel produced, and needs constant monitoring and need continuous power supply for fabrication. If a power failure occurs the production will be stopped, time delay increases for finishing fabrication. In some cases we can loss consumer due to unsatisfactory. My Project focuses the detection of power failure and takes reflex action to solve the problem with help of modem communication using GSM. The power failure will be intimated to the Microcontroller it drive the GSM modem to send a text message to the concern person mobile number which was already programmed in Microcontroller and also monitoring the parameter are temperature, oil level, fuel level and when they exceed predefined limits an automatically intimated to authorized person and also This system can be designed to send SMS alerts whenever the Circuit Breaker (Relay) trips and simulation result done by using LabVIEW software.
HW SW Co-design of Adaptive Task Scheduler for Real Time Systems
Authors: Harkut Dinesh G
Published: April 2019

In embedded system, a real-time operating system (RTOs) is often used to structure the application code and ensure that the deadlines are met by reacting on events in the environment by executing the functions within precise time. Most embedded systems are bound to real-time constraints with determinism and latency as a critical metrics. Generally RTOs are implemented in software, which in turns increases computational overheads, jitter and memory footprint which can be reduced even if not remove completely by utilizing latest FPGA technology, which enables the implementation of a full featured and flexible hardware based RTOs. Scheduling algorithms play an important role in the design of real-time systems. This paper proposes the novel FIS based adaptive hardware task scheduler for multiprocessor systems that minimizes the processor time for scheduling activity which uses fuzzy logic to model the uncertainty at first stage along with adaptive framework that uses feedback which allows processors share of task running on multiprocessor to be controlled dynamically at runtime. This Fuzzy logic based adaptive hardware scheduler breakthroughs the limit of the number of total task and thus improves efficiency of the entire real-time system. The increased computation overheads resulted from proposed model can be compensated by exploiting the parallelism of the hardware as being migrated to FPGA
Survey on Performance and Energy consumption of Fault Tolerance in Network on Chip
Authors: Kumar Reddy B. Naresh , M.H Vasantha , Y.B. Nithin Kumar
Published: April 2019

Network on Chip (NoC) is a communication subsystem, which has the logic for sending and receiving the data from different sources in a single IC, is adopting the technology of VLSI making it to be as compact as possible. However, the increasing probability of failures in NoC’s has been raising concern among the researchers due to large scale integration of components. In specific the issues of fault-tolerance, increase in length of global wires of NoC has to be addressed for on chip and multi core architectures. This survey presents a perspective on existing NoC Fault-tolerant algorithm and a Corresponding distributed fault analysis strategy that encourages in observing the fault status of individual NoC components and their adjacent communication links. The analysis of the Fault-tolerant Network subjected to dynamic workloads for large scale applications is also equally important. This research paper mainly emphasizes on Fault tolerant NoC strategies summarizing over thirty research papers.
Simulation and Real Time Implementation of Various PWM Strategies for 3 Φ Multilevel Inverter Using FPGA
Authors: Balamurugan C. R. , Natarajan S. P. , Anandhi T. S. , Shanthi B.
Published: April 2019

For high power applications Multilevel Inverter (MLI) is extensively used. The major advantages of MLI are good power quality, low switching losses and maintenance of the desired voltage. In this work, the three phase cascaded multi level inverter is analyzed under various modulation techniques that include Sub-Harmonic Pulse Width Modulation (SHPWM) i.e. Phase Disposition (PD) strategy, Phase Opposition Disposition (POD) strategy, Alternate Phase Opposition Disposition (APOD) strategy, hybrid strategy (PD and PS) and Phase Shift (PS) strategy. The study will help to choose those techniques with reduced harmonics for the chosen three phase cascaded MLI with R-L load. The Total Harmonic Distortion (THD), VRMS (fundamental), crest factor and form factor are evaluated for various modulation indices at two different switching frequencies (3.15KHz and 6 KHz). Simulation is performed using MATLAB-SIMULINK. It is observed that HYBRID PWM and PSPWM methods provide output with relatively low distortion for low and high switching frequencies. PODPWM and PSPWM are found to perform better since they provide relatively higher fundamental RMS output voltage for 6 KHz and 3.15 KHz switching frequencies. The experimental result shows PSPWM provide output with low distortion and HYBRID PWM provide output with higher fundamental RMS voltage for fc=3.15KHz. The experimental results were obtained only for fc=3.15KHz.
Thermal Analysis of Fair Scheduling in Real-time Embedded Systems
Authors: Bokhari Tayyaba , Shami Sajjad Haider , Haseeb Farhan
Published: April 2019

Over the past few decades, increased demand of highly sophisticated real-time applications with complex functionalities has directly led to exponentially increased power consumption and significantly elevated system temperatures. These elevated temperature and thermal variations present formidable challenges towards system reliability, performance, cooling cost and leakages. This article explores the thermal management strength of two fairness based algorithms, namely Proportional Fair (PFair) and Deadline Partitioning Fair (DP-Fair). In related literature, the introduction of fairness is often considered as a tool to achieve optimality in multiprocessor scheduling algorithms. This work shows that these algorithms bring about better thermal profile when compared with the commonly used Earliest Deadline First (EDF) algorithm in similar conditions both in uniprocessor and multiprocessor environments. A simulation is conducted for periodic task set model. The obtained results are encouraging and show that use of fairness based algorithms reduces the operating temperature, peak temperature, and thermal variations.
New Optimized Reconfigurable ALU Design Based on DG-CNTFET Nanotechnology
Authors: Ghabri Houda , Ben Issa Dalenda , Samet Hekmet
Published: April 2019

The heart of the microprocessor and responsible for the execution of logical and arithmetic operations, the arithmetic and logical unit is constantly optimized. The performance is improved to allow the development of more powerful and smaller circuits. This paper describes simple ALU but contains the essentials functions. It is a reconfigurable ALU based on double-gate carbon nanotube field effect transistor (DG-CNTFETs). This transistor has an interesting property, it can switch from p- to n- type behavior and vice-versa dynamically. This opens the opportunity for building novel and complex functions in fine-grain reconfigurable logic inaccessible to MOSFETs and reaching a good performance levels. In literature there are several problems related to signal quality. In this paper, we will propose a new solution that allows us to improve the quality of the output signal without affecting the number of transistors used. This improves the overall performance of ALU. We will show the improvement in signal level and quality. First, an overview of carbon nanotube field-effect transistor (CNTFET) and state of the art Reconfigurable ALU based on DG-CNTFET is given. Then an explication of signal integrity issues of the actual Reconfigurable DG-CNTFET cell is done. After we will present and explain the proposed solution. The solution is first applied on the cnt_9T circuit then will show its effect on the ALU. Finally, a performance comparison is made.
FPGA implementation of new LM-SPIHT colored image compression with reduced complexity and low memory requirement compatible for 5G
Authors: Tabra Yasmine M. , Sabbar Bayan Mahdi
Published: April 2019

The revolution in 5G mobile systems require changes to how image is handled. These changes are represented by the required processing time, the amount of space for uploading and downloading. In this paper, a development on WT (Wavelet Transform) along with LM-SPIHT (Listless-Modified Set Partitioning in Hierarchical tree) coding and with additional level of Runlength encoding for image compression has been proposed. The new implementation reduces the amount of data needed to be stored in several stages, also the amount of time required for processing. The compression has been implemented using VHDL (Very High Descriptive Language) on netFPGA-1G-CLM Kintex-7 board. The new implementation results show a reduction in the complexity as processing time.
Urbanidades invisíveis
Authors: Fortuna Carlos
Published: April 2019

Apesar da apregoada visibilidade da cidade, a condição urbana encontra-se sujeita a níveis diferenciados de transparência. Muitas situações de invisibilidade e encobrimentos referem-se à informalidade do cotidiano, em especial nas margens e periferias da urbanidade. Ensaístico, o presente texto questiona a responsabilidade dos “fazedores” de cidade – arquitetos, urbanistas e decisores – no desprezo pelo lado informal de muitos espaços urbanos e da sua vida social. Há como planejar o informal da cidade? A possibilidade de uma cidade justa e aberta está condicionada, portanto, pela disponibilidade destes atores para uma abordagem mais próxima da realidade complexa que a sociologia e as ciências sociais vêm há muito a revelar e a tornar visível.
Epistemologia da laje
Authors: Freire-Medeiros Bianca , Name Leo
Published: April 2019

Inspirado pelos efeitos reflexivos que o armário produz em Epistemology of the closet, de Eve Sedgwick, e pelas críticas feitas por Ananya Roy às teorizações que se voltam ao deciframento das chamadas megacidades do Sul Global, este ensaio propõe uma epistemologia da laje. Com base no referente “favela carioca”, a hipótese sugerida é de que a laje, empírica e conceitualmente, permite deslocamentos epistêmicos que desestabilizam dualismos seculares: favela versus cidade formal, espaço privado versus espaço público, legal versus ilegal, universal versus vernacular.
Parameterized Analysis of Multiobjective Evolutionary Algorithms and the Weighted Vertex Cover Problem
Authors: Pourhassan Mojgan , Shi Feng , Neumann Frank
Published: April 2019

Evolutionary multiobjective optimization for the classical vertex cover problem has been analysed in Kratsch and Neumann ( 2013 ) in the context of parameterized complexity analysis. This article extends the analysis to the weighted vertex cover problem in which integer weights are assigned to the vertices and the goal is to find a vertex cover of minimum weight. Using an alternative mutation operator introduced in Kratsch and Neumann ( 2013 ), we provide a fixed parameter evolutionary algorithm with respect to [Formula: see text], the cost of an optimal solution for the problem. Moreover, we present a multiobjective evolutionary algorithm with standard mutation operator that keeps the population size in a polynomial order by means of a proper diversity mechanism, and therefore, manages to find a 2-approximation in expected polynomial time. We also introduce a population-based evolutionary algorithm which finds a [Formula: see text]-approximation in expected time [Formula: see text].
A Predictive-Reactive Approach with Genetic Programming and Cooperative Coevolution for the Uncertain Capacitated Arc Routing Problem
Authors: Liu Yuxin , Mei Yi , Zhang Mengjie , Zhang Zili
Published: April 2019

The uncertain capacitated arc routing problem is of great significance for its wide applications in the real world. In the uncertain capacitated arc routing problem, variables such as task demands and travel costs are realised in real time. This may cause the predefined solution to become ineffective and/or infeasible. There are two main challenges in solving this problem. One is to obtain a high-quality and robust baseline task sequence, and the other is to design an effective recourse policy to adjust the baseline task sequence when it becomes infeasible and/or ineffective during the execution. Existing studies typically only tackle one challenge (the other being addressed using a naive strategy). No existing work optimises the baseline task sequence and recourse policy simultaneously. To fill this gap, we propose a novel proactive-reactive approach, which represents a solution as a baseline task sequence and a recourse policy. The two components are optimised under a cooperative coevolution framework, in which the baseline task sequence is evolved by an estimation of distribution algorithm, and the recourse policy is evolved by genetic programming. The experimental results show that the proposed algorithm, called Solution-Policy Coevolver, significantly outperforms the state-of-the-art algorithms to the uncertain capacitated arc routing problem for the ugdb and uval benchmark instances. Through further analysis, we discovered that route failure is not always detrimental. Instead, in certain cases (e.g., when the vehicle is on the way back to the depot) allowing route failure can lead to better solutions.
Reduced Fading of Visual Afterimages after Transcranial Magnetic Stimulation over Early Visual Cortex
Authors: Engelen Tahnée , Rademaker Rosanne L. , Sack Alexander T.
Published: April 2019

In the complete absence of small transients in visual inputs (e.g., by experimentally stabilizing an image on the retina or in everyday life during intent staring), information perceived by the eyes will fade from the perceptual experience. Although the mechanisms of visual fading remain poorly understood, one possibility is that higher level brain regions actively suppress the stable visual signals via targeted feedback onto early visual cortex (EVC). Here, we used positive afterimages and multisensory conflict to induce gestalt-like fading of participants' own hands. In two separate experiments, participants rated the perceived quality of their hands both before and after transcranial magnetic stimulation (TMS) was applied over EVC. In a first experiment, triple-pulse TMS was able to make a faded hand appear less faded after the pulses were applied, compared with placebo pulses. A second experiment demonstrated that this was because triple-pulse TMS slowed down fading of the removed hand that otherwise occurs naturally over time. Interestingly, TMS similarly affected the left and right hands, despite being applied only over the right EVC. Together, our results suggest that TMS over EVC attenuates the effects of visual fading in positive afterimages, and it might do so by crossing transcollosal connections or via multimodal integration sites in which both hands are represented.
Systematic position of the monotypic Azorean genus Falbouria Dyte with notes on the definition of Chrysotus Meigen (Diptera: Dolichopodidae)
Authors: CAPELLARI RENATO SOARES , DE SOUZA AMORIM DALTON
Published: April 2019

The systematic position and the generic status of the monotypic genus Falbouria Dyte (Dolichopodidae: Diaphorinae) are evaluated. The type-species of the genus, F. acorensis (Parent), endemic to the Azores, is re-described, and hypopygial and oviscapt morphology illustrated in detail for the first time. Falbouria is kept as a separate genus, but close to Chrysotus Meigen, which is certainly paraphyletic (or even polyphyletic) in its present composition. A brief discussion on the delimitation of Chrysotus is provided and its laesus-group of species is suggested as the core clade of the genus.
Identity of Nyctimystes cheesmani (Anura: Hylidae), with description of two new related species
Authors: KRAUS FRED
Published: April 2019

Using morphological and call data, I redescribe the taxonomically problematic Papuan hylid frog Nyctimystes cheesmanibased on specimens collected at similar elevation to and within 5 km of the type locality. It has long been known thatseveral species of Nyctimystes closely related to N. cheesmani remain to be described in New Guinea, but diagnosis anddescription of these species has languished for decades in the absence of a clear exposition of what constitutes true N.cheesmani. This species is characterized by having vocal slits; a small heel tubercle; basal webbing on hand; exposedtympanum; vertical lines of palpebral reticulum oriented obliquely and with relatively few horizontal cross-connections;pale-tan iris; rear of thighs barred/mottled with brown, caramel, or blue-gray; and call a single, quiet pulsed croak deliv-ered relatively slowly in long trains and with a dominant frequency around 1.9 kHz. It is currently known only from theimmediate vicinity of the type locality, and its exact distribution throughout the Owen Stanley Mts. remains to be deter-mined. I also describe two new species related to N. cheesmani from Milne Bay Province, Papua New Guinea. Both aresimilar to N. cheesmani in morphometric measurements but are easily distinguished from that species by their advertise-ment calls and by details in color pattern. The first species is known only from the southernmost extent of the Owen Stanley Mts and the adjacent Cloudy Mts., the second is endemic to the D’Entrecasteaux Archipelago.
First record of the genus Discotylenchus Siddiqi, 1980 (Nematoda: Tylenchidae) from Iran, with description of one new and data on two known species
Authors: GHAEMI RAZIEH , POURJAM EBRAHIM , ATIGHI MOHAMMAD REZA , PEDRAM MAJID , KARSSEN GERRIT
Published: April 2019

The genus Discotylenchus is reported for the first time from Iran. Discotylenchus iranicus n. sp. is described and illustratedbased on morphological and morphometric characters. The new species is characterized by a combination of the followingmorphological features: lip region continuous and smooth, tapering to an offset prominent labial disc, lateral field withfour incisures, stylet length of 14–15μm, vulva position at 70.8–76.5 %, tail length of 81–100μm, conoid with a roundedtip and presence of males. The Iranian population of D. brevicaudatus shows a wider morphometric range compared tothe original description and the male of this species is described for the first time. The morphological characters and range of morphometric data of D. discretus are in full agreement with the original population.
Resolving the publication date of J.W. Randall’s Catalogue of Crustacea brought by Thomas Nuttall and J.K. Townsend, from the west coast of North America and the Sandwich Islands, and an updated checklist of the Decapoda described therein (Crustacea: Achelata, Anomura, Astacidea, Brachyura, Caridea, Dendrobranchiata)
Authors: LOW MARTYN E. Y.
Published: April 2019

John Witt Randall (b. 1813, d. 1892; Anonymous 1892: 316) published a Catalogue of the Crustacea brought by Thomas Nuttall and J.K. Townsend, from the west coast of North America and the Sandwich Islands … (hereafter the Catalogue), in the first part of the eighth volume of the Journal of the Academy of Natural Sciences of Philadelphia (Randall 1840).
Notes on the genera Sinophasma Günther, 1940 and Pachyscia Redtenbacher, 1908 (Phasmatodea: Diapheromeridae: Necrosciinae), with the description of four new species from China
Authors: HO GEORGE WAI-CHUN
Published: April 2019

A list and key to the species of Sinophasma Günther, 1940 and Pachyscia Redtenbacher, 1908 are provided. Four new species, Sinophasma bii sp. nov., S. daoyingi sp. nov., S. guangdongensis sp. nov. and Pachyscia heishidingensis sp. nov., from China are described and illustrated. One new synonym and one new combination are established: Sinophasma rosarum Chen & He, 2008 is shown to represent the female of S. jinxiuense Chen & He, 2008 (syn. nov.); and Pachyscia longicauda (Bi, 1990) (comb. nov.) is transferred from Sinophasma. The male of Pachyscia dilatata (Chen & He, 2004) is described for the first time.
Remarks on the genus Sinocyrtaspis (Orthoptera: Tettigoniidae: Meconematinae) from China
Authors: CHANG YAN-LIN , BIAN XUN , SHI FU-MING
Published: April 2019

The paper deals with two new species of the genus Sinocyrtaspis Liu, 2000 from China, namely Sinocyrtaspis brachycercus sp. nov., Sinocyrtaspis angustisulcus sp. nov., and supplements the photographs of Sinocyrtaspis spina Shi & Du, 2006. All material examined is deposited in the Museum of Hebei University.
Neither a buccinid nor a turrid: A new family of deep-sea snails for Belomitra P. Fischer, 1883 (Mollusca, Neogastropoda), with a review of Recent Indo-Pacific species
Authors: KANTOR YURI I. , PUILLANDRE NICOLAS , RIVASSEAU AUDREY , BOUCHET PHILIPPE
Published: April 2019

The new family Belomitridae is established for the deep-water buccinoid genus Belomitra P. Fischer, 1883, based onmorphological (shell and radulae) and molecular evidence. The rachiglossate radula is uniquely characterized by amulticuspid rachidian and lateral teeth with very long narrow bases and two small cusps closer to tip. Molecular anal-ysis of a reduced set of Buccinoidea did not resolve the group as a clade, but shows that Belomitridae forms a wellsupported clade within Buccinoidea. Species of Belomitra have adult sizes in the 7–53 mm range; they live in deepwater, mostly in the 500–2,000 meters range, at low and mid latitudes. Eleven valid species described from the Indo-Pacific were originally named in the families Buccinidae, Columbellidae, Cancellariidae, Volutidae, and Turridae.Fourteen new species are described: Belomitra nesiotica n. sp. (Society Islands to Tonga and Fiji in 580–830 m), B.bouteti n. sp. (Society and Tuamotu Islands in 430–830 m), B. subula n. sp. (Solomon Islands to Vanuatu in 760–1110m), B. caudata n. sp. (Sulu Sea in 2300 m), B. gymnobela n. sp. (South Pacific, eastern Indonesia and Philippines in780–2040 m), B. hypsomitra n. sp. (Fiji in 392–407 m), B. brachymitra n. sp. (Fiji in 395–540 m), B. comitas n. sp.(Madagascar and Philippines in 1075–1110 m), B. minutula (Coral Sea in 490 m), B. granulata n. sp. (New Caledoniain 105–860 m), B. reticulata n. sp. (Tonga and Fiji to New Caledonia in 395–656 m), B. decapitata n. sp. (IndianOcean and New Caledonia in 3680–4400 m), B. admete n. sp. (off Sri Lanka in 2540 m), and B. radula n. sp. (Madagascar in 367–488 m).Key-words: Buccinoidea, molecular phylogeny, morphology, anatomy, radula, deep-water fauna
Review of the Campsicnemus fumipennis group (Diptera: Dolichopodidae) in the Hawaiian Islands, with descriptions of new species and corrections of misidentifications
Authors: EVENHUIS NEAL L.
Published: April 2019

Species of the Campsicnemus fumipennis group in the Hawaiian Islands are reviewed. Campsicnemus fumipennis Parent,previously thought to be widespread in the Hawaiian Islands is found to be restricted only to the islands of Moloka‘i andMaui (= geological Maui Nui). Based on comparison of the lectotype female of C. fumipennis with females of C.flaviventer Hardy & Kohn, C. flaviventer is found to be synonymous with C. fumipennis, syn. nov. Three new species,two of them previously misidentified as either C. fumipennis or C. flaviventer, are described and illustrated; all are islandendemics: C. leucostoma, sp. nov. (Hawai‘i), C. spectabulus, sp. nov. (O‘ahu), and C. aniani, sp. nov. (Hawai‘i). The firstdescription of the male of true C. fumipennis is given, a key to species of the C. fumipennis group is presented, and a table of rearing records for immatures of species in the C. fumipennis group is given.
Two new species of Folsomia from north-eastern China (Collembola, Isotomidae)
Authors: WANG BAIFENG , WU DONGHUI
Published: April 2019

Two new species Folsomia aquatica sp. nov. and Folsomia sanjiangensis sp. nov. from north-eastern China are described. F. aquatica was only found in wetlands, it belongs to quadrioculata-group, it can be distinguished from other species in the group by the combination of the following characters: ommatidia absent; microsensillar formula as1,1/1,0,0; VT with 4+4 latero-distal and usually 7 (6–10) posterior chaetae; 1+1 chaeta on anterior side of manubrium. F. sanjiangensis was found in forest and wetlands, it belongs to sensibilis-group and characterized by ommatidia absent; median sensilla on abdomen within p-row of chaetae; fifth segment of abdomen with a pair of leaf-like sensilla on each side; and 3 chaetae on lateral sides of manubrium.
Sir Richard Owen’s fly, Gyrostigma rhinocerontis (Diptera: Oestridae): correction of the authorship and date, with a list of animal names newly proposed by Owen in his little-known 1830 catalogue
Authors: EVENHUIS NEAL L.
Published: April 2019

The authorship and date of publication of Oestrus rhinocerontis is corrected from the Rev. F.W. Hope in 1840 to SirRichard Owen in 1830. A list of new names proposed in Owen (1830) is given, many of which are earlier than publishedelsewhere and have been missed by previous workers. Additionally, the name Gyrostigma rhinocerontis bicornis Brauer is shown to be an available name dating from Brauer (1896).
Unravelling cryptic species diversity in eastern Nearctic paper wasps, Polistes (Fuscopolistes), using male genitalia, morphometrics and DNA barcoding, with descriptions of two new species (Hymenoptera: Vespidae)
Authors: BUCK MATTHIAS , COBB TYLER P. , STAHLHUT JULIE K. , HANNER ROBERT H.
Published: April 2019

A study of male genitalia, morphometric head measurements and DNA barcoding revealed three overlooked species in eastern Nearctic Polistes (Fuscopolistes), two of which are described here: P. (F.) hirsuticornis Buck, sp. nov. and P. (F.) parametricus Buck, sp. nov. Polistes carolina of authors is a complex of two or three species. Type studies also uncovered new synonymies: P. rubiginosus Lepeletier, 1836, sp. restit. (=P. perplexus Cresson, 1872, syn. nov.; P. generosus Cresson, 1872, syn. nov.); P. nigripennis (De Geer, 1773) is removed from synonymy with P. carolina (Linnaeus, 1767) and tentatively synonymized with P. canadensis (Linnaeus, 1758) (=Vespa nigripennis De Geer, 1773, syn. nov.). A revised key to eastern Nearctic Fuscopolistes Richards, 1973 is presented. The male genitalia of eastern Nearctic species are illustrated in detail for the first time, and a preliminary genitalic key is presented. DNA barcoding revealed strongly divergent genetic lineages in three species besides "P. carolina". A so-called 'barcoding gap' was not detected, thereby ruling out species delimitation through divergence thresholds. Indirect evidence suggests that the newly described species may be obligate social parasites.
The collembolan fauna of Maestrazgo caves (Teruel, Spain) with description of three new species
Authors: JORDANA RAFAEL , FADRIQUE FLOREN , BAQUERO ENRIQUE
Published: April 2019

Three new species of cavernicolous Collembola belonging to genera Pygmarrhopalites and Oncopodura from five cavesat El Maestrazgo (Teruel, Spain) are described: Pygmarrhopalites maestrazgoensis sp. nov., P. cantavetulae sp. nov. andOncopodura fadriquei Jordana & Baquero sp. nov. In addition five other species have been found in the same caves:Heteromurus nitidus (Templeton, 1836), Pseudosinella encrusae Gisin & Gama, 1969 (second record of the species),Megalothorax minimus Willem, 1900, Protaphorura aconae Arbea & Jordana 1994 (second record of the species), andSchaefferia decemoculata (Stach, 1939) (sensu: Thibaud 1970). The explorations of cave fauna in these cavities has beencarried out by the "Associació Catalana de Bioespeleologia” under the sponsorship of CEMAT (Centro de Estudios del Maestrazgo Turolense).
The first wasps from the Upper Jurassic of Australia (Hymenoptera: Evanioidea, Praeaulacidae) STEFANIE K.
Authors: OBERPRIELER STEFANIE K. , RASNITSYN ALEXANDR P. , BROTHERS DENIS J.
Published: April 2019

The Hymenoptera fossils discovered in the Upper Jurassic Talbragar Fish Bed in Australia are described and illustrated. Gulgonga beattiei gen. et sp. nov., described from a single specimen, is assigned to the apocritan subfamily Praeaulacinae based primarily on wing venation, mesosomal structure, metasomal articulation, ovipositor shape and antennal form. It is the second member of Praeaulacidae known from Australia; all other praeaulacids have been found in the northern hemisphere. A second Talbragar wasp fossil is assigned to Apocrita incertae sedis because it is too poorly preserved for proper identification.