Miracle-dz/UniFAR-FTUs huggingface dataset:
Wavelet Based Demodulation of Vibration Signals Generated by Defects in Rolling Element Bearings

Vibration signals resulting from roller bearing defects, present a rich content of physical information, the appropriate analysis of which can lead to the clear identification of the nature of the fault. The envelope detection or demodulation methods have been established as the dominant analysis methods for this purpose, since they can separate the useful part of the signal from its redundant contents. The paper proposes a new effective demodulation method, based on the wavelet transform. The method fully exploits the underlying physical concepts of the modulation mechanism, present in the vibration response of faulty bearings, using the excellent time-frequency localization properties of the wavelet analysis. The choice of the specific wavelet family is marginal to their overall effect, while the necessary number of wavelet levels is quite limited. Experimental results and industrial measurements for three different types of bearing faults confirm the validity of the overall approach.
Getting to know you: implementing an interprofessional education program for medical and respiratory therapy students in mechanical ventilation – challenges and lessons learned

ABSTRACT The physician and respiratory therapist function as an interprofessional team caring for patients on mechanical ventilation. There is a paucity of research devoted to interprofessional education (IPE) of students from different professions in mechanical ventilation during clinical rotations in the medical intensive care unit (MICU). Student interprofessional education could develop team communication and shared decision-making skills early in training. The uniqueness of this introductory IPE programme is that it occurs during a clinical rotation in a real MICU, as opposed to a pre-clinical simulated campus setting, and it blends students from various educational backgrounds. Medical students and respiratory therapy students from different academic institutions participated in traditional lectures, small interprofessional group case-based problem-solving sessions, MICU bedside teaching sessions, written assessments, and focus groups. Quantitative responses were analyzed using descriptive statistics. Qualitative responses were categorised using the core competencies for Interprofessional Collaborative Practice. The purpose of this introductory IPE programme was to foster opportunities for interprofessional interaction during the student clinical experience while improving knowledge about mechanical ventilation. Qualitative expectations and feedback were predominantly positive. Quantitative responses suggest that students from both disciplines gained knowledge about mechanical ventilation in an IPE setting.
Media Security Protection: New Methodology For Authorship Examination Of The Internet Discourse

This article deals with the issues of forensic authorship examination of Internet discourse texts to ensure media security. The existing forensic authorship examination methods are either not suitable for identification and diagnostic tasks, or need to be updated and improved, since modern communication in the Internet environment has new properties that are different from the properties of purely oral / written speech. Authors try to reveal specific mixed nature of this new type of forensic objects (a combination of oral and written speech) and propose new approaches to identification and diagnostic authorship examination of Internet speech products. The most rational approach to develop methodology for Internet discourse authorship examination is, according to the authors’ opinion, to combine the methods of identifying the speaker based on oral speech (in terms of linguistic analysis in framework of “Dialect” technique) and written speech (methods proposed by Vul and the Ministry of Internal Affairs of Russia). The article serves as a basis for the future research in the sphere of forensic authorship examination of the internet discourse and forensic speech science in general. The authors conclude that it is necessary to improve / develop not only authorship identification methods but authorship diagnostic methods which allow one to determine properties of a questioned text and/or properties of an author’s idiostyle, electronic communication skills, etc. that is needed to determine author’s social and demographical characteristics.
High dose valacyclovir for cytomegalovirus prophylaxis following allogeneic hematopoietic cell transplantation

Introduction Cytomegalovirus (CMV) is one of the most common and clinically significant viral infections following allogeneic hematopoietic cell transplantation (HCT). Currently available options for CMV prophylaxis and treatment present challenges related to side effects and cost. Methods In this retrospective medical record review, the incidence of clinically significant CMV infection (CMV disease or reactivation requiring preemptive treatment) following allogeneic HCT was compared in patients receiving valacyclovir 1 g three times daily versus acyclovir 400 mg every 12 h for viral prophylaxis. Results Forty-five patients who received valacyclovir were matched based on propensity scoring to 35 patients who received acyclovir. All patients received reduced-intensity conditioning regimens containing anti-thymocyte globulin. Clinically significant CMV infection by day + 180 was lower in the valacyclovir group compared to the acyclovir group (18% vs. 57%, p = 0.0004). Patients receiving valacyclovir prophylaxis also had less severe infection evidenced by a reduction in CMV disease, lower peak CMV titers, delayed CMV reactivation, and less secondary neutropenia. Conclusion Prospective evaluation of valacyclovir 1 g three times daily for viral prophylaxis following allogeneic HCT is warranted. Due to valacyclovir's favorable toxicity profile and affordable cost, it has the potential to benefit patients on a broad scale as an option for CMV prophylaxis.
Conditioning technique for multiinput-multioutput processes with input saturation

The problems of controller windup and directional change in controls, in controllers for multiinput multioutput processes with input saturation, is considered. To avoid the windup problem, a generalisation is proposed for the conditioning technique based antiwindup compensator, by introducing a filtered setpoint. This provides a parameterisation to deal with situations where the original conditioning technique was not suitable. To reduce the effect of directional change in controls due to the multiple saturation, further modifications to the conditioning technique are proposed. An interesting outcome is that the generalised antiwindup compensator due to Astrom and Wittenmark is interpreted in terms of the conditioning technique; moreover, these interpretations are used to introduce modifications to their scheme in order to deal with the problem of directional change in controls.
Location of the Flexor Carpi Radialis Myotendinous Junction: a Cadaveric Study

Background. The flexor carpi radialis (FCR) tendon is frequently selected for use as an interposition graft, for tendon transfers, and as a landmark for volar forearm approaches. Original surgical techniques of FCR harvest recommend incision placement 10 cm proximal to wrist crease. To date no anatomic study has been conducted to precisely define the location of the FCR myotendinous junction. Methods. 5 fresh frozen cadavers were dissected, exposing the full length of the FCR. The radial styloid (RS) was selected as a distal anatomic landmark, the medial epicondyle (ME) was chosen as a proximal landmark. All measurements were taken along the length of the FCR tendon. As the FCR myotendinous junction is chevron shaped, we marked both the proximal myotendinous junction (PMT) and distal myotendinous junction (DMT), with the DMT indicating the beginning of purely tendinous FCR. Four measurements were taken for each arm: 1) RS to DMT, 2) RS to PMT, 3) ME to PMT, 4) ME to DMT. Results. Pearson correlation coefficient comparing tendinous length of the FCR to the overall forearm length was 0.896 indicating a strong positive correlation (p = 0.040). The mean ratio of tendinous FCR length to forearm length was 0.42 ± 0.05, ranging from 0.38 to 0.50. This correlated to a distance 11.7 ± 2.3 cm proximal from the radial styloid. Conclusions. This study demonstrates the location of the myotendinous junction of the FCR. Our results suggest incision placement 10 cm from proximal wrist crease to be unreliable in forearms too short or too long. Instead, we recommend measuring 40% of the length from RS to ME as a more consistent marker for FCR harvest.
Standardized assembly workstation embodiment for electromechanical products

The lack of information on assembly equipment represents one of the main obstacle for the integration of assembly concerns at an early stage of product design activity. The definition of standardized assembly equipment gives an answer to this problem and permits to reduce considerably the global lead time. This paper is related to the design of a new standardized assembly system developed in collaboration with Fabricom Automation. We first identified three main classes of assembly equipment and examined the main characteristics of current assembly operations. Based on this analysis, we proposed a concept (basic 'G' shape frame in which different functional units can be incorporated) for a systematic organization of assembly workstation and developed this concept for two categories of products (CLII and CLIII). The conceptual process and the detailed design step for CLII are discussed in this paper. The impact on product design activity of such a standardized system is also examined.
Recreation and hunting differentially affect deer behaviour and sapling performance

Humans are increasingly acknowledged as apex predators that shape landscapes of fear to which herbivores adapt their behaviour. Here, we investigate how humans modify deer space-use and their effects on vegetation at two spatial scales; zones with different types of human use (largescale risk factor) and, nested within that, trails (fine-scale risk factor). In zones with three contrasting types of human activities: 1) no recreation, no hunting, 2) with recreation, no hunting and 3) with recreation and hunting, we linked deer space-use (dropping counts) to browsing intensity, relative growth and survival of planted saplings. Plots were located at two distances to trails (20 versus 100 m) to test how trails affect deer space-use and sapling performance. Additionally, plots were distributed over forest and heathland as risk effects are habitat-dependent. Deer space-use was highest in the zone without recreation or hunting, resulting in higher browsing levels and lower sapling growth and survival, but only in heathland. In contrast, deer space-use and sapling performance did not differ between zones with recreation only and zones with recreation and hunting. Deer dropping counts were lower near trails used for recreation, but this was not associated with browsing impact or sapling performance. Our results show that recreational use modifies deer space-use which is associated with browsing impact on woody vegetation, while seasonal hunting activities in zones with recreation did not have additive year-round effects. Yet, effects were only observed at the larger scale of recreation zones and not near trails. Furthermore, deer space-use was only associated with sapling performance in open heathland, where high visibility presumably increases avoidance behaviour because it increases detectability and decreases escape possibilities. This suggests that recreation creates behaviourally mediated cascading effects that influence vegetation development, yet these effects are context-dependent. We advocate incorporating human-induced fear effects in conservation
A simple U‐shaped printed ultra‐wideband antenna with WLAN band rejection

In this article, a novel printed ultra‐wideband (UWB) antenna with band stop characteristics is proposed. The proposed antenna is a simple U‐shaped monopole structure where a rectangular strip is placed on both sides at the top of semi annular ring monopole structure. The band rejection characteristic is achieved by introducing a pair of L‐shaped slots in the ground plane to prevent interference due to wireless local area network (WLAN) systems operating within ultra‐wideband. To achieve the desired UWB response with WLAN band notched characteristics, the dimensions of rectangular strip, L‐shaped slot, symmetrical step slot on the both edge of ground plane, a single slot in the center of the ground plane and the gap between the ground plane and the radiating structure are optimized. Frequency rejection characteristics depend on the dimension of L‐shaped slot and can be fine controlled using other parameters. The antenna structure is designed, fabricated and tested. The simulation and measurement results show that the return loss = −10 dB from 3.09 to 10.6 GHz with band stop characteristics in 5.11–6.14 GHz frequency band. The radiation characteristics show its suitability for indoor wireless communication. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26091
Building Employability Skills in ICT Master Coursework Curriculum

Development and delivery of a subject called Employability Skills and ICT Workplace Practice, targeted at international students taking Masters of Engineering Studies is reported. Almost all of the students are international with a desire to stay and work in Australia. In practice however, seeking professional employment in Australia has proved quite challenging for many of these students. A study conducted by the Australian Chamber of Commerce and Industry identifies certain 'soft skills' in demand by employers. These include: initiative, communication, teamwork, technology, problem solving, self-management and planning. The learning objectives of the subject are designed to further develop and enhance such skills. The design and structure of the subject are described. The evaluations conducted on the first delivery of the subject strongly indicate that the learning objectives set for the subject are achieved and a high degree of student achievement and satisfaction is obtained.
Exploring Eye Tracking Measures to Understand Operator Performance

Eye tracker technology is a growing and viable source for more sensitive, unobtrusive, and objective measures of operator performance and cognitive state. Several eye movement metrics have been validated in the empirical literature, but caution is advised when linking low level eye movements (e.g., fixations) to high level cognitive constructs (e.g., workload). Valid analysis of eye movement data is vulnerable to output interpretation, metric granularity, and incomplete views of operator performance. To address these issues, more research is needed to exploit contextual information from other performance measures, identify metric deficiencies, and develop useful composite measures. Individual eye movement metrics alone provide an insufficient picture of operator cognition and performance, but when purposefully combined with other metrics (e.g., other physiological sensor data), offer a more comprehensive look at operator performance. Understanding why operator errors occur can help researchers identify information-processing bottlenecks, possibly allowing designers to find ways to improve performance.
Examining older users’ performance on and preference for menu designs of digital photo frames

The advancement of image technology not only has escalated the development of digital camera devices but has also changed the way people view and store photos. With the rapid increase in the number of senior citizens and gentrification of society, attention should be paid to the development of more friendly and user-centered designs of digital devices to improve older users’ experience. This study set out to examine older users’ performances and preferences for the menu design of digital photo frames. Twenty-four participants evaluated 11 different paper prototypes of digital photo frames generated from the combination of 3 design elements: size of icon, size of screen and of icons. The results of the statistical analysis showed that exhaustive but not burdensome display, habitually perceivable message structure, and slightly magnified size for both the display and icons were easily accepted and preferred more by the participants. This study concludes with suggestions for future research and design practices for digital photo frame developers.
Effects of Boost Pressure and Spark Timing on Performance and Exhaust Emissions in a Heavy-Duty Spark-Ignited Wood-Gas Engine

AbstractWood gas represents a viable energy source, particularly for stationary electric power generation, as it allows for a wide flexibility in fossil fuel sources and can be used as full supplement fuel in conventional heavy-duty (HD), turbocharged (T/C), spark-ignited (SI) engines. For such engines fuelled with wood gas, spark timing and boost pressure are critical parameters that affect both engine performance characteristics and NO and CO emissions. Thus, the main objective of this study is to investigate theoretically the effects of these parameters on the performance and exhaust emissions (NO and CO) of such an existing engine fueled with wood gas. The investigation is conducted by using a comprehensive two-zone phenomenological model. The predictive ability of model was tested against experimental measurements, which were obtained from the operation of such an engine fueled with wood-gas fuel under various operating conditions. The experimental results were found to be in good agreement with the .
A simple conformal-strip fed composite antenna with wideband & enhanced isolation for MIMO applications

A composite antenna with wide impedance bandwidth and enhanced isolation for multiple-input-multiple-output (MIMO) applications is introduced in this article. A simple conformal-strip fed rectangular dielectric resonator (rDR) with a conducting conformal-patch, which provides wide impedance bandwidth (3.21-6.19 GHz), is utilized as an antenna element. The proposed MIMO antenna is formed by arranging two symmetrical composite antenna elements side by side along with a simple decoupling structure (based on a wide rectangular slot and two metallic strips) in between them. The proposed MIMO antenna delivers good inter-port isolation (greater than 18 dB) over the entire operating bandwidth. Also, a well satisfactory outcome of the envelope correlation coefficient (ECC) is obtained over this bandwidth. Moreover, the proposed antenna exhibits a stable broadside directional radiation pattern over the entire operating bandwidth.
Survey: Learning Techniques for Intrusion Detection System (IDS)

A B S T R A C T An intrusion detection system (IDS) is a software application that monitors network or system activities for malicious activities. The research on neural network methods and machine learning techniques to improve the network security by examining the behavior of the network as well as that of threats is done in the rapid force. There are several techniques for intrusion detection which exist at present to provide more security to the network, however many of those are static. Many researchers used machine-learning techniques for intrusion detection, but some shows poor detection, some techniques takes large amount of training time. In this paper, learning approaches i.e. neural network approaches used for intrusion detection in the recent research papers has been surveyed and proposed an extreme learning approach to solve the training time issue.
Quality costs: a critique of some ‘economic cost of quality’ models

Abstract While carrying out a study of the collection and use of quality-related costs in manufacturing industry the authors found in the literature many notional models purporting to indicate the relationships between the major categories of quality costs and a few sets of real data. Despite being based on common principles, there are wide differences between some of the models and between the models and real data. The paper categorizes and discusses the models in the light of the research experience. It is concluded that many of the models are inaccurate and misleading and serious doubts are cast on the concept of an optimum quality level corresponding to a minimum point on the total quality-cost curve.
Spectral properties of Rayleigh backscattered light from single-mode fibers caused by a modulated probe signal

The statistical properties of Rayleigh backscattering from single-mode fibers are investigated, taking into account the modulation and the coherence of the source light. The autocorrelation function and the power spectral density of the backscattered field and intensity are derived. To describe the noise due to Rayleigh backscattering in bidirectional systems, the spectrum of the interference of backscattered light with reflected source light is also calculated. The measurements confirm the theoretical results. It is shown that, if no optical isolator is used and the laser diode is exposed to Rayleigh backscattering, the interaction between laser and fiber depends strongly on the modulation of the light. >
Lignin degradation by microorganisms: A review

Lignin is an abundant plant‐based biopolymer that has found applications in a variety of industries from construction to bioethanol production. This recalcitrant branched polymer is naturally degraded by many different species of microorganisms, including fungi and bacteria. These microbial lignin degradation mechanisms provide a host of possibilities to overcome the challenges of using harmful chemicals to degrade lignin biowaste in many industries. The classes and mechanisms of different microbial lignin degradation options available in nature form the primary focus of the present review. This review first discusses the chemical building blocks of lignin and the industrial sources and applications of this multifaceted polymer. The review further places emphasis on the degradation of lignin by natural means, discussing in detail the lignin degradation activities of various fungal and bacterial species. The lignin‐degrading enzymes produced by various microbial species, specifically white‐rot fungi, brown‐rot fungi, and bacteria, are described. In the end, possible directions for future lignin biodegradation applications and research investigations have been provided.
Eye Tracking Used to Evaluate the Human Behavior

In this paper we presented some theoretical and experimental considerations about the eye movements, gaze direction and correlation between them and the posture of human head. First of all it is important to analyze the movements of the eyes and also the modeling of image creation on the retina surface according to the illumination and accommodation process. In the second part of the paper we presented the experimental setup used to record the eye movements and the human head posture in possible situations. In the final part of the paper we analyzed the recordings of eye movements for a human subject during time experiments correlated with the eye gaze direction and simulations. Also the results, conclusions and future applications of these researches are presented.