Miracle-dz/UniFAR-FTUs huggingface dataset:
AUTOMATIC NOISE GATE SETTINGS FOR MULTITRACK DRUM RECORDINGS

A method has been developed for automating the settings of a noise gate. The method has been applied to a kick drum track containing bleed from secondary drum sources and white noise. The optimal settings are found by maximising the signal to distortion ratio (SDR). The SDR has contributions from the distortion caused to the kick drum signal, and the residual bleed and noise. These two components are weighted, enabling the gate to be controlled by a single parameter. It is shown that the improvement in the SDR can be obtained when the two components of the SDR are approximated, enabling the optimal settings to be calculated from the noisy signal and a single kick drum hit. It is found that the optimal threshold is slightly above the peak level of the noise component of the signal.
Koch slot loop antenna for wireless body‐centric communication

In this article, we describe the design of a coplanar waveguide (CPW) fed Koch slot loop antenna with a tuning stub. The antenna is optimized to be used in a wireless body‐centric communication. The antenna is designed to operate in the ISM frequency band from 5.725 to 5.875 GHz (ITU‐R5.138, 5.150, and 5.280). The study shows properties of the antenna, from the viewpoint of impedance matching, and radiation patterns. The impedance matching at the resonant frequency can be acquired by a tuning stub. The designed CPW‐fed slot antenna exhibits a proper polarization, a low‐radiation loss, and a weaker dispersion. We experimentally prove that the designed antenna efficiently excites surface waves and creeping waves. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:764–766, 2014
MUSSA: Land Use Model for Santiago City

MUSSA is a land use model developed to interact with the Santiago four-stage transport model called ESTRAUS. It was developed as an application of the BID-CHOICE theory of the competitive urban land market, where land rents are endogenous and consistent with equilibrium conditions, including land availability and developers’ behavior. Interaction with transport occurs through economic access measures obtained from the ESTRAUS model; in turn, MUSSA provides the locations of activities (households and firms). Total activity volumes and population forecasts are exogenously provided by a region input-output model. The whole system interacts through a central data base with a graphic interface (geographic information system) under Windows. MUSSA is able to forecast location choices of 65 household clusters into 264 zones and six dwelling types plus five firm types allocated to lot sizes; residents and firms compete for the available land. It is a fully disaggregated behavioral location model that is applied in a static equilibrium approach. The package and the model are presented; its capacities and limitations, data requirements, software, and outputs are described; and some performance indexes are presented.
The re-invention of the corporate information model

The paper analyzes the changing structures necessary to access business knowledge. The information needs of corporate users, especially those found in mobile and diverse professional services organizations, have expanded as the sheer amount of data available worldwide has multiplied. Many corporations are trying to restructure traditional, and typically standalone, information repositories and services into entities that will better serve today's and tomorrow's business information customer. As an example, the paper describes the approach being taken to establishing a new information model at the "Big Six" public accounting firm Coopers and Lybrand LLP.
Cybernetic Analysis of Perspective Flight-Path Display Dimensions

Perspective flight-path displays, presenting the future trajectory to be flown through a three-dimensional tunnel-or highway-in-the-sky, are likely to become the primary flight displays of future cockpits. A crucial design parameter is the size of the virtual tunnel as it determines the tradeoff between pilot path-following performance and workload. An information-theoretical and control-theoretical analysis is presented that aims at gaining an in-depth understanding of the effects of the tunnel size on pilot manual control behavior. The theoretical findings are verified in two pilot-in-the-loop experiments, one conducted in a fixed-base simulator and one in real flight. In the simulator experiment, it is shown that through pilot multiloop model identification the effects of reducing the tunnel size can be directly related to pilot/vehicle bandwidth and stability margins. The use of pilot models allows an objective quantitative analysis of the effect of the tunnel size compared to the subjective, qualitative surveys conducted in the past. The flight-test experiment supports the main findings of the simulator experiment but also reveals that pilot performance in actual flight is less consistent and also lower than measured in the flight simulator.
Prediction of Rainfall Using Support Vector Machine and Relevance Vector Machine

This article adopts Support Vector Machine (SVM) and Relevance Vector Machine (RVM) for prediction of rainfall in Vellore (India). SVM is firmly based on the theory of statistical learning theory. RVM is a probabilistic basis model. SVM and RVM use air temperature (T), sunshine, humidity and wind speed (V a) as input variables. This article uses SVM and RVM as a regression technique. Equations have been also developed for prediction of rainfall. The developed RVM gives variance of the predicted rainfall. This study shows the RVM is more robust model than the SVM.
Suppressed Thermocline Mixing in the Center of Anticyclonic Eddy in the North South China Sea

Direct microstructure observations and fine-scale measurements of an anticyclonic mesoscale eddy were conducted in the northern South China Sea in July 2020. An important finding was that suppressed turbulent mixing in the thermocline existed at the center of the eddy, with an averaged diapycnal diffusivity at least threefold smaller than the peripheral diffusivity. Despite the strong background shear and significant wave–mean flow interactions, the results indicated that the lack of internal wave energy in the corresponding neap tide period during measurement of the eddy’s center was the main reason for the suppressed turbulent mixing in the thermocline. The applicability of the fine-scale parameterization method in the presence of significant wave–mean flow interactions in a mesoscale eddy was evaluated. Overprediction via fine-scale parameterization occurred in the center of the eddy, where the internal waves were inactive; however, the parameterization results were consistent with microstructure observations along the eddy’s periphery, where active internal waves existed. This indicates that the strong background shear and wave–mean flow interactions affected by the mesoscale eddy were not the main contributing factors that affected the applicability of fine-scale parameterization in the northern South China Sea. Instead, our results showed that the activity of internal waves is the most important consideration.
Synchronous ovarian, endometrial and cervical cancer—case report

Department of Operative Gynecology, University of Medical Sciences of Poznań, 61-841 Poznań, Poland Department of Gynecological Endocrinology, University of Medical Sciences of Poznań, 61-841 Poznań, Poland Department of Mother’s and Child’s Health, University of Medical Sciences of Poznań, 61-841 Poznań, Poland Forensic Medicine Department, University of Medical Sciences of Poznań, 61-841 Poznań, Poland
Recent progress in MEMS electret generator for energy harvesting

Energy harvesting is a method by which energy naturally present in the environment is captured and then converted into electricity for use in low‐power electronics. Among the various energy sources, structural vibration is believed to be useful for powering wireless sensors in various applications such as sensor network and structural health monitoring. In the present paper, after a brief introduction to electret materials and charging technologies, recent progress in microelectromechanical systems (MEMS) electret generators is reviewed. © 2011 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.
Combi ni ng Li nk and Content for Communi ty Detecti on: A Discriminative Approach

In this paper, we consider the problem of combining link and content analysis for community detection from networked data, such as paper citation networks and Word Wide Web. Most existing approaches combine link and content information by a generative model that generates both links and contents via a shared set of community memberships. These generative models have some shortcomings in that they failed to consider additional factors that could affect the community memberships and isolate the contents that are irrelevant to community memberships. To explicitly address these shortcomings, we propose a discriminative model for combining the link and content analysis for community detection. First, we propose a conditional model for link analysis and in the model, we introduce hidden variables to explicitly model the popularity of nodes. Second, to alleviate the impact of irrelevant content attributes, we develop a discriminative model for content analysis. These two models are unified seamlessly via the community memberships. We present efficient algorithms to solve the related optimization problems based on bound optimization and alternating projection. Extensive experiments with benchmark data sets show that the proposed framework significantly outperforms the state-of-the-art approaches for combining link and content analysis for community detection.
Ecological Risk Assessment of Potential Toxic Elements in Salt Marshes on the East Coast of the Red Sea: Differential Physiological Responses and Adaptation Capacities of Dominant Halophytes

The impact of the mutual interactions between salinity and the phytoavailability of potential toxic elements (PTEs) on the adaptation of halophytes in their natural habitat is complex and far from clear. Herein, we aimed to evaluate salinity- and PTE-induced oxidative stress in selected halophytes and the antioxidant responses of these plants. For that, five salt marshes were selected, and the physiological responses of dominant halophytes (Tamarix nilotica, Heliotropium crispum, Zygophyllum coccineum, Halopeplus perfoliata, and Avicennia marina) were evaluated against the physicochemical features of their rhizosediments. The tested locations varied in their physicochemical properties and showed various levels of salinity stress and a low fertility status. Distinct variations in ten PTE concentrations were recognized among locations and within plants, with Cr and Co showing the highest ecological risk indices. The high levels of salinity and PTEs were associated with higher foliar levels of malondialdehyde, particularly in A. marina and Z. coccineum. The bio-concentration ratio revealed hyperaccumulating potentials of PTEs by the tested halophytes. Z. coccineum showed effective accumulation of Co, Fe, and Pb, while T. nilotica exhibited effective accumulation of Cu, Cd, and Zn. H. perfoliate had higher accumulation of Cr and Hg, whereas A. marina accumulated a significant amount of Hg, Cd, Zn, and Mn. H. crispum leaves accumulated the highest Ni levels among the tested halophytes. Altogether, our results highlight the potential risk of pollution of the tested areas with PTEs and the efficient physiological adaptation of each of the tested halophytes as a unique biological system. They also reflect the high capabilities of the tested halophytes as phytoextractors of their corresponding PTEs and their potential as efficient tools for phytoremediation of salt- and PTE-affected lands.
A Cross-Sectional Study Rating the Perceived Impact and Reach of the Ministry of Health and Wellness Initiatives to Curb Physical Inactivity in Jamaica

Like other countries, Jamaica in the last 2 decades has seen an increase in physical inactivity, which has significantly increased the number of people living with chronic lifestyle diseases on the island. It can be argued that increased industrialization has resulted in several ecological concerns, such as violence that may deter people from engaging in physical exercise, pollution and polluted air, lack of parks, walkways, and sports/recreational amenities. Despite the causes of physical inactivity, there is a global mobilization by the World Health Organization (WHO) and individual countries to reduce physical inactivity levels by at least 15% by 2030. The COVID-19 pandemic has surely put a dent in the physical activity (PA) targets. Many countries initiated restrictive measures (lockdowns, curfews, and social distancing) to try and contain the spread of the COVID-19 virus. For countries such as Jamaica, combating physical inactivity seems to require strategies, interventions, motivation, and the promotion of physical activity (PA) culture from all stakeholders (integrated approach) to meet the WHO’s goals and standards by 2030. The purpose of this research was to assess the perceived impact and reach of Jamaica’s Ministry of Health and Wellness (MOHW) initiatives to promote PA, impact weight loss, and lifestyle while trying to reduce sedentary behaviors in Jamaica. A standardized questionnaire was used in a single cross-sectional design that surveyed 843 Jamaicans using Google Forms. Participants ages 12-71 years old were surveyed using a hybrid sample strategy that used convenience and snowballs sampling techniques. The results of the study indicated that there was a 35% participation rate in the MOHW initiatives, with only 14.3% of the participants believed that the initiatives were impacting their weight loss and lifestyle. Additionally, 51.6% of the participants did not believe the initiatives caused them to participate more in PA; on average, the initiatives by the MOHW were rated at 50% effective. The initiatives are not very effective in reaching most of the population, which is not achieving the goal of enhancing healthy lifestyle practices and reducing physical inactivity. These implications may potentially see an increase in Jamaica’s physical inactivity levels and chronic lifestyle diseases if these initiatives are not intensified to reach the majority of the population.
Sinkhole Attack detection and prevention in MANET & Improving the performance of AODV Protocol

MANET is one of self configuring fastest emerging wireless technology. MANET is multi-hop wireless network of autonomous mobile nodes with no preset infrastructure where each node can move in any direction as well play a role of router. Dynamic nature of this network makes routing protocols to play a prominent role in setting up efficient route among pair of nodes. Therefore many proactive, reactive & hybrid routing protocols have been proposed, among which one of well known is AODV due to its high performance gain. Cooperative nature of nodes exposes MANET to various kinds of passive & active attacks. Sinkhole is one of severe kind of attack which attempts to attract most of network traffic towards it & degrade the performance of network. this paper, shows performance metrics as throughput, PDR, End to end delay & Packet loss. Simulation is carried out using widely used simulator NS2. Keyword: NS2, MANET, Vulnerability, Active, Passive, Sinkhole.
Wideband Radomes for Millimeter-Wave Automotive Radars

We demonstrate the efficacy of periodic corrugations, fabricated as part of the radar cover to serve the dual purpose of protecting the radar circuitry and maximizing transmission in millimeter-wave (mmW) automotive radars. A 2-D array of square-base pyramids engraved on the plastic radar cover was optimized to achieve minimum reflection for a wide range of incident angles, ±40°, and across the operating frequency band of 76–81 GHz. More importantly, we present an alternative radome texture, namely, the inverse-pyramid corrugations, which results in improved structural integrity compared to the pyramidal corrugations. This novel inverse-pyramid radome structure is also much easier to manufacture and achieves similar performance as the more conventional pyramid structure. Both designs are shown to significantly reduce radar cover reflections, which is perhaps the most significant bottleneck in modern mmW automotive radar sensor performance.
Back Driving Assistant for Passenger Cars with Trailer

This paper focuses on control strategies that are needed to stabilise a backing trailer and steer it into the desired direction. A model of the trailer and the car is used in order to calculate the desired steering wheel angle. An important constraint is that the driver should not be disturbed by the steering intervention. Measurements are done with a prototype car with an active front steering system. The results show that the drivers manage to fulfill the given driving task faster and with less steering wheel activity than without the assistant.
Exploration of novel optimal fuzzy‐based controller for enhancement of frequency regulation of deregulated hybrid power system with modified HVDC tie‐line

Recent advancements in the power system put forth various challenges to frequency regulation studies. These challenges show an immense impact on the power system's inertia and load pattern. The traditional load frequency control (LFC) mechanism may not be efficient to sustain the frequency regulation against these new challenges. Hence an intelligent, effective, and efficient controller is indispensable for various operating conditions of the power system. With this motive, a new intelligence‐based controller (i.e., fuzzy (FOPIλ) + PIDN) is proposed and explored for the LFC of the modern power system. Besides, an opposition‐based volleyball premier league algorithm is deployed to obtain optimal control parameters for the most promising results. The justification of the controller is evaluated on a nonlinear interconnected hybrid deregulated power system for several case studies. The effectiveness of the proposed controller has been verified by comparing it with several popular strategies for the step and random perturbation in load. Also, the firmness in the dynamic response against a wide range of system parameter variations has been analyzed. Moreover, the participation of a modified high voltage direct current model with inertia emulation technique in the system's inertia build‐up has been demonstrated. Finally, the efficacy of the proposed LFC scheme has been verified over previously published literature on their platform.
Prediction of coupled in-line and cross-flow vortex-induced vibrations of fluid-transporting free-spanning submarine pipelines: an integral transform solution

ABSTRACT The Generalised Integral Transform Technique (GITT) was adopted to predict the dynamic behaviours of fluid-transporting free-spanning submarine pipelines, considering both the in-line and cross-flow vibrations. The coupled in-line and cross-flow fluid-structural system was analytically solved by GITT, where wake oscillator models were used to simulate in-line and cross-flow forces acting on the pipeline. The mathematical model and the solution method were validated against experimental results. The convergence behaviour of the solution method was analyzed, parametric studies were conducted, and the influence of internal fluid and external velocities were evaluated. Findings in this paper also demonstrated that GITT, which is a semi-analytical solution, is faster than finite element methods, hence highly suitable for conducting parametric studies for submarine pipelines.
Distortion correction for oblique projection onto a curved screen

This theoretical discussion deals with obliquely projected images on the surface of curved viewing screens. Resulting perspective and geometrical distortions are usually precorrected with computer software in nearly real time, or by optical printing methods in the case of film. Owing to the significant technical and cost overhead of these methods, there is an interest in producing real-time passive correction using optics supplemental to the normal projection lens. Several concepts to this end are described.
Multilevel AC/DC/AC converter by using three-level boost rectifier and five-level diode clamped inverter

This paper presents a control scheme for single-phase rectifier with three-level boost converter to improve power quality. The hysteresis current controller is adopted to control power switches for achieving a high power factor and low current distortion. The voltage balance problem in the DC bus capacitors is achievable based on the proposed control scheme for a single-phase rectifier. A five-level voltage source inverter is used to reduce the harmonic distortion, increase inverter voltage rating and decrease the filter requirement. Computer simulations are given to confirm the high power factor and low current distortion at the rectifier, and low harmonic distortion at the multilevel inverter.
Improving the implementation of ERP systems through action research

Many organisations are experiencing similar problems with ERP implementation that they experienced with earlier information technologies. As a result, many organisations have invested heavily in ERP software only to discover that business performance has not improved overall. These shortfalls are attributed in the literature to a number of factors such as a misunderstanding of the nature of ERP and an underestimation of the effort involved in implementing such systems effectively. Traditionally, this literature has been normative or prescriptive with new tools, techniques, methods and managerial approaches arising with very little empirical validation. This research contributes to this area by attempting to address some of these limitations by systematically exploring issues of ERP implementation empirically. Throughout this research project, action research has required the researchers to balance research with practical objectives and it is recognised that the ethics of this form of research can prove problematic and the authors also identify these areas.
Electric Probe Measurements on Microstrip

The aim of the experimental investigation reported here is to measure the electric field of microstrip using a field probe. To establish the accuracy of these measurements, the probe is first calibrated against a known field which is obtained by analyzing a wire suspended axially in a rectangular metal tube. Measurements on a simple wire over ground plane circuit indicate that unshielded structures are basically unsuitable for accurate probe calibration. Finally, the theoretical results predicted by a numerical analysis program for microstrip, published recently, are verified by comparing these with the actual field distribution determined experimentally.