Miracle-dz/UniFAR-FTUs huggingface dataset:
Measuring and modeling tire-pavement noise on various concrete pavement textures

It is well accepted that pavement texture affects tire-pavement noise. Furthermore, there exist a large number of unique nominal concrete pavement textures to choose from, and with tire-pavement noise an important pavement surface characteristic, pressure now exists to select textures that are quieter but do not compromise safety and to some degree, durability. To assist in this optimization process, improvements are needed in the efficiency and accuracy of texture measurement, along with the means to characterize concrete pavement texture in such a way that is more relevant to the potential for tire-pavement noise. To illustrate improvements being made in measurement technology, an innovative robotic texture measurement system termed RoboTex is described herein. RoboTex consists of a line laser machine vision sensor fixed atop a remote-controlled robotic chassis. The system is capable of collecting three-dimensional macrotexture data with a spatial resolution of approximately 0.4 mm2 and a height resolution of 0.01 mm. For tire-pavement noise measurement, On-Board Sound Intensity (OBSI) has become the de facto measurement standard in the USA. While most measurements to date have been conducted at 60 mph using a Goodyear Aquatred III test tire, recent standardization is migrating towards the new ASTM F 2493 Standard Reference Test Tire (SRTT). Coupling texture and noise data, collected with RoboTex and OBSI, respectively, is serving to advance the state of the art. The ultimate goal is to identify the fundamental links between texture and noise. In the interim, more relevant phenomenological links are sought that have the potential to be expanded to more fundamental models as more is learned about these complex phenomena. This project utilized data collected on over 1000 unique concrete pavement test sections located throughout North America under sponsorship of the National Concrete Pavement Technology Center at Iowa State University, Federal Highway Administration, American Concrete Pavement Association, and now a consortium of State Departments of Transportation. The specifics of these measurement systems, and analysis techniques used to link the results, are described herein
A high-speed buck converter for efficiency enhancement of W-CDMA power amplifiers

We present a design strategy for a buck converter, which fulfills the high dynamic requirements of efficient envelope amplifier needed by modern efficiency enhancement techniques for power amplifiers. The proposed DC–DC converter has an innovative control system, which makes it fast, robust, and resource saving. A mathematical model describes its dynamic behavior and is used to find a setup, which gives an optimal compromise between the dynamic performance and efficiency. The approach is applicable to various state-of-the-art communication standards. As an example, an envelope following (EF) power amplifier (PA) for the wideband code-division-multiple-access (W-CDMA) modulation scheme is treated. The corresponding buck converter is implemented in a monolithic chip (except the inductor and the capacitor of the output filter). The measurements with an industry standard W-CDMA PA (RMPA2265) match very well with the forecast of the model and confirm doubling of the average efficiency.
A Lightweight and Multimotion Crawling Tensegrity Robot Driven by Twisted Artificial Muscles

Soft robots made from soft materials show great advantages over rigid robots in environmental adaptability and motion flexibility. However, too soft body makes them lose the load capacity, which limits their applications in locomotion. Although the crawling tensegrity robots with both rigid bars and flexible cables are potential to address this challenge, the existing inchworm friction drive methods are difficult to realize the motion of a single tensegrity unit. Besides, the lack of appropriate soft actuators and robot configuration also blocks the development of the crawling tensegrity robots. This article presents a new inchworm driving method realized by the inclined supporting feet. By using the twisted artificial muscle (TAM) as actuator, the combination of the TAM and the inclined supporting feet endows a single three-bar tensegrity unit with multimotion capacity and anisotropic stiffness characteristics. The designed tensegrity robot not only has high compliance but also displays high stiffness, which endows it with high load capacity. The prototype can carry a load of 150 g (7.5 times of its weight) to achieve straight and turning motions. This article provides a design idea for the crawling tensegrity robot and a theoretical foundation for improving the load capacity of high compliance robots.
Implementation aspects of mobile UMTS FDD receivers

In this communication, a viable design paradigm for the implementation of highly integrated base band receivers for UMTS FDD is elaborated. Special attention is paid to integrated circuits for mobile terminals, i.e. downlink receivers are considered. After presenting important requirements on integrated downlink UMTS FDD receivers, the transmitter and receiver architectures with respect to hardware-software partitioning are discussed in greater detail.
The Use of Digital Image Art under Visual Sensing Technology for Art Education

The traditional art education model often cannot achieve good teaching results due to the development of digital technology. Art is integrated with technology based on three-dimensional (3D) panoramic vision sensing technology, so as to study the application of the combination of visual sensing technology and digital image art in the field of art education. With the application of projection virtual game “Whac-A-Mole” as an example, the integration of panoramic color volume structured light generation technology with single emission point and omnidirectional visual imaging technology with single view is proposed; the mathematical model of the active vision system is established, and the camera model, projector model, object surface illumination model, and their relationship are studied. On this basis, the mathematical relationship between the color of the projected light source and the color of the corresponding imaging point is proposed; a light source color correction algorithm based on the two-color reflection model is proposed. The object surface color is corrected by three-channel reflectance after the light source color correction algorithm is used for correction. The results suggest that the 3D panoramic vision sensing technology makes the current active stereo vision develop from the visual perception of surface structure to the visual perception of volume structure and reduces the error rate of recognition from 44% to 11%. Moreover, the algorithm does not need to know the coding method of the projected light source and the surface material of the object in advance. The scene teaching combined with technology overcomes the limitations of the teaching site and brings students into a completely realistic teaching situation. The presentation of digital image art using visual sensing technology can inspire children’s imagination, combine education and games, and perform edutainment. Thereby, the application research of digital image art based on 3D panoramic visual sensing technology has an irreplaceable development prospect in the field of art education.
Security assurances for intelligent complex systems

Intelligent complex systems are drawing considerable attention of researchers in various scientific areas. These architectures require adequate assurances of security, reliability, and fault-tolerance. The implementation of security functions such as identification, authentication, access control, and data protection can be viewed in terms of a security assurance model. This model relies on the security architecture of a system, which in turn is based on a trusted infrastructure. This assurance model defines the level and features of the protection it offers, and determines the need and relevance of the deployment of specific security mechanisms. In this article, we first examine how the verification of the security measures, and notably their presence, correctness, effectiveness, the impact of changes in the existing intelligent complex systems with respect to vulnerabilities, systems engineering choices, reconfigurations, patch installations, network management, etc. We then explore how we can evaluate the overall security assurance of a given system. We emphasis that it is desirable to separate the trust providing assurance model and the security architecture, into two separated distributed entities (instrumentations, protocols, architectures, management). We believe that this segregation will allow us to automate and boost the trusted infrastructure and security infrastructure, while the authorizations, exceptions, and security management as a whole, are achieved through their interaction. Finally, we discuss the security metrics for these complex intelligent systems. New mechanisms and tools are needed for assessing and proving the security and dependability of a complex system as the scale of these systems and the kind of threats and assumptions on their operational environment pose new challenges. We conclude with a description of our proposed security management model.
Tunable terahertz plasmonic lenses based on semiconductor microslits

A theoretical investigation of tunable terahertz (THz) plasmonic lenses on the basis of InSb microslits is presented.First, it is demonstrated that the surface plasmon polaritons propagating in an InSb microslit array with variant slit widths would face different phase retardations, which, by design, can produce a focusing wavefront. The extraordinary transmission of THz radiation through the InSb subwavelength slit array is also observed. Second, a method for tuning the focal lengths of InSb plasmonic lenses is proposed. The results in this article provide a potential way to realize a tunable terahertz plasmonic lens with high transmission, which can be applied to the application of rapid 3D z‐scanning based THz imaging and sensing. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:979–981, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25079
Transfusion-transmitted infections

Blood transfusion is remarkably safe in high-income countries (HICs), where safeguards have long protected the blood supply against the major transfusion transmissible infections (TTIs). Globally, surprisingly few pathogens have been implicated in transfusion transmitted infection and most pathogens do not merit specific intervention. Nonetheless, pathogens are emerging much more frequently than is often appreciated, thus necessitating constant vigilance and individual assessment of transfusion-associated risk. Factors that inform the need for intervention include the ramifications (i.e., severity) of infection with a given pathogen, the likelihood of detection in the absence of a defined intervention, tolerance of standard processing and storage conditions (e.g., refrigeration), transfusion transmissibility and clinical penetrance (i.e., development of symptoms following transfusion transmission). Different approaches that have been used to protect the blood supply include donor selection and risk-based deferral, laboratory screening (i.e., using highly sensitive and specific serological and/or molecular assays), bacterial culture (platelets) and pathogen reduction (PR). Each approach has both strengths as well as limitations, whereby strategies are devised to meet national or regional risk, while balancing available resources. TTIs, as a direct reflection of blood transfusion safety, highlight a World divided. In HICs, hypervigilance is increasingly disproportionate to risk; this has contributed to policies and interventions that have been wasteful, incurring enormous cost at marginal—if any—clinical gain. By contrast, many of the routine measures regarded as effective in HICs are conspicuously deficient or even absent in lowand middle-income countries (LMICs) where blood transfusion thus remains a major mode of disease transmission.
Strong convergence rates of multiple change-point estimator for ρ-mixing sequence

Abstract We consider the detection of multiple change-points for ρ-mixing sequence. A CUSUM-type method is proposed to estimate the multiple mean change-points and the strong consistency of the multiple mean change-point estimation is proved when the number of change-point is known. Furthermore, we establish the strong convergence rate of this change-point estimation under mild conditions and simulations of multiple change-point detection are also presented.
Modeling and Performance Analyzing of Helix Transmission Base on Modelica

Picking manipulator ontology structure used rotation and translational motion pairs to join the components together, and then a multi-joint motion mechanism was built which meet the picking space requirement. According to the characters of growth space of litchi fruit, here used helix transmission as the first axes of the picking manipulator, to achieve motion in vertical direction. This study introduces the application of multi-domain modeling and simulation when constructing and simulating a helix transmission. Use object-oriented technology, multi-domain modeling and simulation language Modelica to construct the motion system which integrates motor model, signal detection module, signal processing module and parametric screw transmission model in Dymola simulation platform. Test the helix transmission by simulation, using the mechanical structure, sensor technology, signal processing technology. Simulation results show that, the modelica can provide a valid simulation for complex electromechanical system and support for parametric design.
PET-CT in brain disorders: The South African context

Positron emission tomography combined with X-ray computed tomography (PET-CT) has an established role in the management of brain disorders, but may be underutilised in South Africa. Possible barriers to access include the limited number of PET-CT facilities and the lack of contemporary guidelines for the use of brain PET-CT in South Africa. The current review aims to highlight the evidence-based usage of brain Positron emission tomography (PET) in dementia, movement disorders, brain tumours, epilepsy, neuropsychiatric lupus, immune-mediated encephalitides, and brain infections. While being areas of research, there is currently no clinical role for the use of PET-CT in traumatic brain injury or in psychiatric or neurodevelopmental disorders. Strategies to expand the appropriate use of PET-CT in brain disorders are discussed in this article.
Review on Emissions of Ammonia from Housing Systems for Laying Hens in Relation to Sources, Processes, Building Design and Manure Handling

The ammonia emissions from housing systems for laying hens must be reduced to abate environmental damage. In traditional cage systems and alternative, welfare-oriented, housing systems for laying hens two types of waste can be distinguished, namely manure and litter. Manure is encountered as slurry or as dry manure. Litter on the floor is a dry and granular mixture of faeces and e.g. sand. It is used by the hens for dust bathing and scratching. In the processes involved in the emission of ammonia, the most important process parameters are temperature, Ph and water activity, i.e. the availability of water for micro-organisms in the substrate. Air temperature, relative humidity and air velocity define the influencing climatic conditions best. Despite the effectiveness of Ph control, application of this measure has too many negative side-effects. Forced drying of manure seems the only effective and acceptable way for temporary control of ammonia emissions inside housing systems. Regular removal of manure out of the house is always necessary. Reduction of ammonia emissions can be achieved by changing over from housing systems with composting (emission rate 386 g NH3/hen a) to battery systems with manure belts underneath the cages (emission rate 34 g NH3/(hen a), which enable drying of manure and regular removal. The drying rate of the manure and the frequency of removal are crucial in relation to the emission. Minimum emission from manure is achieved if a dry matter content of 60% is reached within 50 h after excretion of the faeces. The emission from battery systems with belts can be reduced to 10 g NH3/(hen a) if the manure is removed from the house twice daily instead of twice weekly. The emissions of ammonia from alternative housing systems with litter are several times higher compared with battery cages with belts, due to the long stay of litter inside the house. A higher dry matter content of litter slows down the volatilization of ammonia, but practical means to reduce the emission from litter in this way are not yet available. Moreover, a good understanding of water activity is still not available.
THERAPEUTIC PROFILING OF NANO ENCAPSULATED DIOSGENIN VIA ATTENUATING HORMONAL STATUS, CELL PROLIFERATION, INFLAMMATORY RESPONSES, AND APOPTOSIS IN AN ANIMAL MODEL OF MAMMARY ONCOGENESIS

Objective: The central motive of this study is to explore the therapeutic impact of Diosgenin encapsulated Chitosan nanoparticles (DG@CS-NP) on mammary carcinogenesis in female Sprague Dawley rats via modulating hormonal status, cell proliferation, inflammatory responses, and Apoptosis. Methods: 7,12-dimethylbenz(a)anthracene (DMBA) was administered subcutaneously near the mammary gland (25 mg/kg b. wt) to provoke mammary tumor in female Sprague Dawley rats. Following the progress of a tumor, DMBA-induced tumor-bearing rats were medicated orally with 5 mg/kg b. wt of DG@CS-NP. Consequently, the expression of ER, PR, PCNA, Cyclin D1, NF-κB, TNF-α, Bcl-2, Caspases-3, and p53 in experimental rats were revealed via architectural immunohistochemistry. Further, Diosgenin interactions with these proteins were evidently confirmed by molecular docking analysis. Results: As a result, we noticed diminished levels of ER, PR, PCNA, Cyclin D1, NF-κB, TNF-α, and Bcl-2 expressions in DG@CS-NP medicated rats as well as with elevated levels of Caspases-3 and p53 expressions. In DMBA rats, the expressions were vice versa. Additionally, molecular docking analyses support these outcomes by highlighting the strong interaction between Diosgenin and breast cancer targets. Conclusion: These reports prove that DG@CS-NP imposes its therapeutic impact by hormonal adjustments, downregulating proteins involved in inflammation and cellular proliferation, and thereby promotes apoptosis by impeding apoptotic inhibitors.
Protocol adherence in the intensive care unit

Checklists and protocols have been successfully introduced into aviation with improved safety as a result of this effort. In recent years there have been attempts to introduce protocols and checklists to health care with the goal of improving patient safety. The present study investigates adherence to protocols in the intensive care unit (ICU) in a number of nursing tasks. The results of this work indicate that adherence to protocols varies dramatically between tasks. This finding suggests that adherence is often a function of task and equipment design. In addition, the context in which protocols are being used also potentially determines their success. Overall, the results indicate that protocols can be introduced in health care, but additional considerations have to be taken into account to ensure their successful application. © 2011Wiley Periodicals, Inc.
The Research of Image Processing in Intelligent Transportation System

With the rapid development of economy, the role of transportation is getting more and more highlighted. It has a great increase of various transport and private vehicles which will be followed by the problems such as congestions, accidents and the pollution; however, it is infeasible to ease the traffic pressure by improving the road infrastructure only. How to use modern science and technology and schedule transportation sufficiently and reasonably to avoid the above problems is the main purpose for this research. This paper took advantage of the background-difference method [1-to get the vehicle count in accordance with MATLAB image processing technology.
Research of Discrete Manufacturing Industry Production Control System Based on RFID Technology

In view of the current discrete manufacturing workshop production process control problem of poor real-time performance, reliability, this paper proposes a discrete manufacture based on rfid technology workshop production process control system solutions. For discrete manufacturing enterprise workshop layer of the production process control system emphasizes the manufacturing process of real-time data acquisition, validity and enforceability of the production plan. Developed a discrete manufacturing process control system based on RFID, provides the foundation for just-in-time production of discrete manufacturing.
Evaluation of potentials of aqueous ethanolic extract of Psidium guajava on reproductive functions of male Albino rats

The therapeutic utilization of plants for managing several diseases by people of all continents, especially Africa, is as old as tradition. The objective of this study was to evaluate the potentials of aqueous ethanolic leaf extract of Psidium guajava on male reproductive parameters. Twenty-four male Albino rats were randomly assigned into four groups of six rats per group. Rats in the control group were administered Tween 20®. Rats in groups 2, 3, and 4 were administered Psidium guajava aqueous ethanolic leaf extract orally at the doses of 100, 200, and 400 mg/kg body weight, respectively, once daily for 60 days. The body weights of the rats were determined at the beginning and end of the experiment. Sperm parameters and some reproductive organs weight of each rat was also determined, some organs were collected for histopathology. Assay for follicle-stimulating hormone, luteinizing hormone, and testosterone was done using Enzyme-Linked Immunosorbent methods. Some reproductive organs were collected for histopathological analyses. The results showed a dose-dependent increase (p<0.05) in the weight of male reproductive organs, sperm parameters, and hormones. The extract significantly increased (P < 0.05) serum testosterone in the group treated 400 mg/kg body weight when treated groups were compared with control. Furthermore, the results of FSH and LH revealed a significant (p < 0.05) increase when the treated groups were compared with the control. The histopathological analysis did not reveal any form of damage to the architectural integrity of the testis. However, there was degenerating germinal epithelium in the group administered 400 mg/kg of the aqueous ethanolic leaf extract of P. guajava. Conclusion: aqueous ethanolic extract of P. guajava has positive effects on male reproductive parameters.
The tip/tilt tracking sensor based on multi-anode photo-multiplier tube

Based on the demands of high sensitivity, precision and frame rate of tip/tilt tracking sensors in acquisition, tracking and pointing (ATP) systems for satellite-ground optical communications, this paper proposes to employ the multiple-anode photo-multiplier tubes (MAPMTs) in tip/tilt tracking sensors. Meanwhile, an array-type photon-counting system was designed to meet the requirements of the tip/tilt tracking sensors. The experiment results show that the tip/tilt tracking sensors based on MAPMTs can achieve photon sensitivity and high frame rate as well as low noise.