Miracle-dz/UniFAR-FTUs huggingface dataset:
Traffic Forecasting as if Intersection Control Matters: The Sequel

For the second time within 5 years, the traffic forecasting model application developed by the planning staff for the Cedar Rapids, Iowa, area metropolitan planning organization (MPO) has achieved not only a base-year accuracy that exceeds what other, larger MPOs have accomplished, but also a travel-volume and travel-time accuracy for the relatively high-volume streets that, in most cases, is not significantly different from the sampling error of field observations. Comparable success has also been achieved in modeling peak-hour traffic patterns, where applications have also been developed to model peak-hour factoring and design hour volumes for transportation projects. The standard of accuracy that has been achieved for this metro area has been made possible by two major differences from typical MPO practice. First, travel estimates (trip generation rates) are based on field-measured vehicle-trip rates rather than the common practice of a stated-response travel survey of the public (i.e., on what people do rather than what they say they do). Second, and far more important, the modeling is based on the dynamic integration of the Highway Capacity Manual (HCM) methods of intersection traffic control analysis with traditional traffic forecasting processes. Although there are many planning agencies that claim to be using HCM procedures, the process described is shown to be the one that much more faithfully replicates the flexible approach capacities and volume/delay relationships that are the direct result of HCM-level analysis.
The Quantification of Overlay Network Congestion Based on Compressive Sensing

To obtain overlay network traffic and delay information between two hosts is important for network management, monitoring, design, planning and assessment. Traffic matrix and delay matrix represent the traffic and delay information between two hosts, so introduce the concept of the overlay network traffic matrix and delay matrix. Compressive sensing theory restores traffic matrix and delay matrix but is not suitable for overlay network. This paper improves compressive sensing algorithm to make it more applicable to overlay network traffic matrix and delay matrix restoration. After calculating the traffic matrix and delay matrix this paper quantifies overlay network congestion, which reflect the current network security situation. The experimental results show the restoration effect of traffic matrix and delay matrix is well and the congestion degree reflects the actual network state.
Development of a Liquid Fuel System for GE MS5002E Gas Turbine: Rig Test Validation of the Combustor Performance

Analysis of the Oil & Gas market segment showed that potential MS5002E customers could benefit from firing the gas turbine with distillate oil as a back-up fuel, mainly to provide power when the fuel gas is not available (e.g. when the plant itself is being commissioned). To address this customer need, the design of a dual fuel system for such mission should target simplicity, reliability and minimize the additional cost with respect to the single gas version. To achieve these targets, the development of the dual fuel system for the MS5002E leveraged the efforts made by GE for the design of a liquid fuel system for Frame 9F-1 series with no need of atomization air. Moreover, the emission capability during liquid fuel operation was enhanced allowing the mixing of water and fuel before injection in the combustion chamber and using of improved injection technology, thus improving the efficiency of water injection with a significant reduction in the required water flow rates; the importance of this achievement is related to both the increasingly stringent regulation on this subject and the often poor availability of water in the Oil & Gas market segment. The system is capable of continuous operation without water injection for applications where emissions are not critical; in these cases a small amount of demineralized water is employed occasionally for fuel line cooling and flushing, thus helping to guarantee constant performances of the injectors, and to maintain liquid fuel start-up capability over time.This paper presents the expected performance, in terms of ignition capability, emissions, operability and expected hardware durability on LF/water-fuel emulsion operation, based on a single can rig test campaign. The new liquid fuel cartridges were tested from ignition to base load at ISO and extreme simulated ambient conditions, both with and without water injection, showing promising performance in terms of combustor operability and emissions. All the combustor components were instrumented with thermocouples to assess variations in the hardware thermal levels with respect to the single gas conditions, and identify possible issues related to the transient and steady-state liquid fuel operation. Further development and testing will be carried out in the next phases of the development, and the performance will be confirmed by a dedicated engine test at the first commercial opportunity.Copyright © 2014 by ASME
Horizon Picking Using Two-Branch Network With Spatial and Time–Frequency Features

In seismic interpretation, horizon picking is a very essential but time-consuming and challenging task. Most existing auto-picking algorithms have been proposed to improve the horizon interpretation efficiency. Recently, deep learning approaches have shown promising performance in horizon identification. However, feeding directly seismic time series or images into a deep learning network only uses the amplitude information of seismic signal, which limits the classification accuracy. In this letter, we propose to learn more distinctive characteristics in the time–frequency domain from the continuous wavelet transform (CWT) coefficients. More importantly, we develop a novel two-branch convolutional neural network (TB-CNN) for horizon picking: a CWT branch can mine the time–frequency features in 2-D CWT coefficients of seismic time series. At the same time, a spatial branch further explores the local spatial features in seismic images. The features of the two branches are then fused to perform classification. The output is the class scores of voxels being horizon or background. Finally, we extract the horizon surface by finding all voxels with the highest score values of the horizon class in the vertical temporal direction. We conduct experiments on both synthetic and field data. The results show that the proposed method can effectively fuse the spatial features and time–frequency features to yield higher performance than the traditional 3-D auto-tracking method.
Variable Frequency Drive Applications and Their Electrical Protection Scheme for Liquids Pipelines

Motor and pump units can start either directly across the line (utility) or through a VFD. If the power system is weak (high impedance and relatively low available MVA), the result will be limitations on the maximum size of motor that may be started directly across the line. Currently some available power systems are not capable of starting large motors across the line and therefore VFD systems are required.A VFD can be used for starting purposes or to operate a motor/pump unit (unit) continuously. Liquids pipelines have been using VFDs for unit starting purposes and for pressure control while either one of the units connected to the VFD or while there is a dedicated VFD per unit.One VFD can be used to operate all the units. The VFD starts the motor, ramps it up, and synchronizes it with the utility to switch the motor from VFD operation to utility operation. The VFD follows the same sequence with the next unit. The VFD also switches the motor from utility operation to VFD operation. With pumps in series, one unit can remain connected to the VFD for pressure control in liquids pipelines.Each unit can also be controlled by a dedicated VFD, allowing independent control of each unit for start-up and speed control. Both single VFD or dedicated VFD per unit offer advantages. Benefits of using a single VFD for all units are cost savings for some applications, a backup start across the line when allowed by the power system, and station pressure control. The benefits of a dedicated VFD per unit application include more flexibility in flow and pressure control, ease of expansion without interrupting existing operations for an extended period, energy efficiency, and redundancy.Motor protection schemes for the above two VFD applications are discussed and compared in this paper. In order to maintain a safe and reliable pipeline system, comprehensive motor protection functions are provided to the pump unit. Although the principles are the same, there are some differences between the two motor protection applications.For a dedicated VFD per unit application, the VFD protection/control circuitry normally provides motor protection because the motor is always connected to the VFD. RTDs over-temperature protection is not typically a standard feature of VFDs, however, it can be provided by proper PLC programming or the VFD incoming feeder protection relay.Copyright © 2012 by ASME
Heterogeneous breast phantom for ultra wideband microwave imaging

With the growing interest in the microwave imaging for early breast cancer detection, there is a need to develop an advance artificial breast phantom to emulate the interactions of electromagnetic waves with biological tissues. In this article, details of a realistically shaped heterogeneous breast phantom manufactured for the use in an ultra wideband microwave imaging system are presented. The developed phantom has electrical characteristics which are in good agreement with those of real breasts. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26046
Efficient demodulator for bandpass sampled AM signals

A simple nonlinear (quadratic) filter is shown to demodulate bandpass sampled AM signals efficiently. The filter is based upon a discrete version of the recently introduced Teager-Kaiser energy operator, but also closely resembles a complex digital sampling demodulator. Such a filter can also be implemented in analogue circuitry.
Reliance on nonutility generation in planning customer delivery systems

This paper describes a probabilistic approach for determining the portion of nonutility generation capacity, (NUG "Credit"), that can be relied on as a firm resource when assessing the adequacy of the Ontario Hydro customer delivery system. The proposed method is based on the criterion that the reliability of supply to the customers on the delivery system should not be affected by the addition of a NUG to that system. Calculations to determine the reliability level consider the system load profile, system contingencies, the load forecast and its uncertainty. The NUG size and the NUG forced outage rate as well as the uncertainty of the in-service date of new facilities. Sensitivity studies are conducted to determine the factors that largely affect the NUG credit. The paper also presents an approximate method for estimating the NUG credit. The method is simple and easy to apply and does not require the detailed calculations of the exact method. A comparison of the exact and approximate methods is illustrated using some numerical examples. >
Hybrid controller for safe microgrid operation

We introduce a problem of control for power grids with the microgrid architecture. Microgrid is a novel architecture of power grid in which a cluster of distributed energy resources is locally and consistently operated. The objective of the control problem is to determine a controller that keeps the load-generation balance in a power grid and regulates the grid's behavior to satisfy safety specifications. We use a combination of continuous and discrete controllers in order to archive the objective for a rudimentary microgrid. The result is a hybrid controller for the continuous-time nonlinear model and is correct for the microgrid with a realistic setting of parameters.
Predictive Value of F-SIRI in Prognosis of Patients with Hepatocellular Carcinoma after Radical Hepatectomy

Background: Objective to evaluate the predictive value of preoperative fibrinogen and systemic inflammatory response index (F-SIRI) in the prognosis of patients with hepatocellular carcinoma after radical hepatectomy. Methods: the clinical data of 298 patients with hepatocellular carcinoma who underwent surgery and confirmed by postoperative pathology in our hospital from January 2015 to December 2017 were retrospectively analyzed. The F-SIRI score was calculated according to FIB and SIRI data of peripheral blood. The relationship between F-SIRI score and clinicopathological characteristics was analyzed. The survival analysis was performed by Kaplan Meier method, Cox regression analysis was used to analyze the prognostic factors. Results: preoperative F-SIRI score was correlated with tumor diameter, FIB and SIRI (P<0.05), but not with age, gender, TNM stage and other clinical features (P>0.05). There were significant differences in the 5-year DFS rate and OS rate among patients with different preoperative F-SIRI scores(P<0.05); Cox regression analysis showed that preoperative tumor diameter, alpha fetoprotein level and F-SIRI score were independent predictors of DFS in patients with HCC (P< 0.05), while preoperative tumor diameter, ALB and F-SIRI score as independent predictors of OS (P<0.05). Conclusion: preoperative F-SIRI is an independent prognostic factor in patients with HCC after radical hepatectomy, with poor prognosis in patients with high level of F-SIRI.
Implementation of graduate employability skills SJT instrument in Universiti Utara Malaysia

Assessing graduate employability skills before they enter the job market is very important because if they are lacking certain skills, improvement can be made through the process of training. In this study, a valid and reliable new instrument for measuring graduate employability skills using Situational Judgement Test (SJT) approach was implemented. The instrument consisted of 12 items representing five employability skills namely communication skill, professional ethics & morality, entrepreneurial skill, critical thinking in problem solving and personal quality. The purpose was to obtain a norm score for each of these skills. A survey was conducted using the SJT instrument on 1012 Universiti Utara Malaysia (UUM) local undergraduate final year students. The norm score was generated by employing BCA bootstrap technique. Scores guideline was created based on three levels (low, moderate and high). The outcomes indicated that the students possessed moderate level of communicationskill, entrepreneurial skill, .
Performance of Communication- and Computation-Intensive SaaS on the OpenStack Cloud

The pervasive use of cloud computing has led to many concerns, such as performance challenges in communication- and computation-intensive services on virtual cloud resources. Most evaluations of the infrastructural overhead are based on standard benchmarks. Therefore, the impact of communication issues and infrastructure services on the performance of parallel MPI-based computations remains unclear. This paper presents the performance analysis of communication- and computation-intensive software based on the discrete element method, which is deployed as a service (SaaS) on the OpenStack cloud. The performance measured on KVM-based virtual machines and Docker containers of the OpenStack cloud is compared with that obtained by using native hardware. The improved mapping of computations to multicore resources reduced the internode MPI communication by 34.4% and increased the parallel efficiency from 0.67 to 0.78, which shows the importance of communication issues. Increasing the number of parallel processes, the overhead of the cloud infrastructure increased to 13.7% and 11.2% of the software execution time on native hardware in the case of the Docker containers and KVM-based virtual machines of the OpenStack cloud, respectively. The observed overhead was mainly caused by OpenStack service processes that increased the load imbalance of parallel MPI-based SaaS.
Heritage transformations

This special theme examines the dynamic relationships between production, availability, and usage of Big Data, laying out a research agenda for digital heritage at the time of the ‘data turn’. Over the past 15 years, a proliferation of heritage data has been generated by ‘ecosystems of distributed practices’ enacted by the co-working of bodies, cultural identities, organisational workflows, software, application programming interfaces, etc. The authors of research articles and commentaries in this collection explore the three macro-dimensions along which we can map transformations of and by heritage in Big Data ecologies: (a) ontologies or heritage as datified resources, (b) interactions and (c) methodologies and epistemologies.
Coexistence of tunneling and displacement currents in a nanogap driven with ac fields

Current across two metallic electrodes with a nanogap separation (∼50 nm) is investigated for an ac voltage applied between them. The current shows a distinct transition from the injection current regime due to quantum tunneling at low frequencies to a regime dominated by classical displacement current at high frequencies. The transition takes place at a critical frequency that increases with the applied voltage. A theoretical model treating the electrodes as a parallel RC circuit is developed; the model explains the experimental results reasonably accurately.
The Research and Implementation of TCP Measurement Technology

This article gives the outline of the method of TCP measurement, and the open source codes are combined to make the active measurement for TCP into reality. Some network parameters such as throughput, bandwidth and TCP windows size can be measured to show the performance of the network. Accordingly the network stream can be observed, the network capacity and the performance is determined so that the network can provide higher QOS.
A Brief Review and Framework towards Synthesising Silicone-Hydrogel Materials that Mimic Skin Deformation Behaviour

Skin is an important organ which provides multiple functions. Thus, if skin fails i.e. due to burns or diseases, body will lose the protection provided by skin against infections and the harmful outer environment. Due to that, synthetic skin is seen as a very important alternative in the future. A number of studies have been carried out to understand skin’s basic functions and behaviour as its mechanical properties and behaviour are important in various fields. Nevertheless, to date no breakthrough has been reported. Therefore, this paper aims to briefly review and outline a framework which ultimately will lead to the synthesising silicone-hydrogel materials that potentially becoming a skin substitute. The newly synthesised composite materials will be tested mechanically to characterise its behaviour based on Ogden hyperelastic model. It could be emphasised that the present study is significant and will contribute to the body of knowledge in the area of skin mechanics.
A new type of profile relief for high contact ratio spur gears

Abstract The second of a series of papers on the systematic approach to the profile relief design of both low contact ratio (LCR) and high contact ratio (HCR) spur gears and its effects on transmission error (TE) and tooth loads. Basics of the approach are given in the previous paper of the series. Application of the approach to HCR spur gears has produced two promising design cases, namely the short and long reliefs, with advantages and disadvantages. In this paper a new relief type, double relief, is introduced by making use of the two promising cases. Advantages of the two are brought together, with some compromise. The overall performance of the new relief type, however, is superior to the others in terms of peak-to-peak TE value, maximum tooth load value, rate of tooth loading and number of smooth TE curves, and hence in terms of the range of transmitted load with nearly uniform motion transfer. A procedure for compensation for adjacent pitch error (PE) with smooth TE curve at off-design load is also included.
Dimensional Synthesis of a 4-DOF Hybrid Driving Platform

A novel 4-DOF hybrid driving platform of flight simulator is presented. Its main load born by a PU limb which composed of pneumatic support unit, so the driving force, the safety and the simulation performance are all improved. The simulation performance is proposed to be taken as the evaluating index. Dimensional optimization of the driving platform is studied with the aid of the characteristics of Rayleigh quotient and vector. The influence law of scale parameters to simulation performance and constraints is discussed through monotonic analysis and it is adopted to seek the optimal solution of the simulation performance. The effectiveness of the method is proved by the example.
Validation of the System Usability Scale (SUS)

For almost 20 years, practitioners and researchers have been using the System Usability Scale (SUS) as a “quick and dirty” method of evaluating the usability of different websites, software, and other human-machine systems. The characteristics of the SUS (e.g., reliability, number of scales, etc.) have been widely discussed in the literature but there have been little written about how the results of the SUS relate to traditional usability results (likely due primarily to these results being proprietary). In this study, eight different usability studies were used to make a direct comparison between the SUS and usability results. A significant but small relation was found between these two scores suggesting that the SUS may be a valid measure to ordinally compare two or more systems.
Application of energy function to assess the first-swing stability of a power system with a SVC

The transient energy function method is usually used to assess the stability of a power system without considering the effect of control devices. A modification of the method is proposed to determine the first-swing stability limit of a power system in the presence of a static VAR compensator (SVC). The effect of the SVC is carefully incorporated in determining the value of critical energy needed for system separation. The unstable equilibrium point at which the critical energy is to be evaluated is determined by considering that the SVC operates at its full capacitive rating. A recent control strategy of SVC proposed to maximise the first-swing stability limit can justify the use of such an unstable equilibrium point. The above technique of determining the first-swing stability limit of a power system in the presence of a SVC is tested on both single- and multimachine systems. The results obtained by the proposed technique are also compared with the corresponding actual values found through repetitive time-domain simulations of system dynamic equations.