Miracle-dz/UniFAR-FTUs huggingface dataset:
Ultra-wideband bandpass filter with multiple notch-bands on multilayer liquid crystal polymer substrate

Novel compact ultra-wideband (UWB) bandpass filters (BPFs) with single or multiple notch-bands to avoid interference from existing radio systems are presented. A compact UWB BPF is proposed and designed based on broadside-coupled stepped impedance resonators (SIRs) at first, and then notch-bands are generated by embedding open-circuit stubs into broadside-coupled SIRs. Because of the harmonic suppression behaviour of SIRs, the proposed UWB BPFs have a wide stopband and high rejection level. The characteristic of the proposed notch-structure was investigated by full-wave simulations. Multilayer liquid crystal polymer (LCP) technology was used to implement the designed UWB BPFs. In the experiments, a UWB BPF with excellent stopband performance was designed to meet the Federal communications commission-defined indoor limits at first, and then UWB BPFs with single, double and triple notch-bands were designed to demonstrate the flexible notch-band, high-selectivity and wideband harmonic suppression performances of the proposed filter. The designed BPFs were fabricated by a multilayer LCP lamination process and measured using a vector network analyser. Good agreement between the predicted and measured results was obtained as presented here.
Wind-Resistant Analysis for Large-span Single-layer Reticulated Shells

Single-Layer Reticulated Shells are a kind of space-latticed system with the features of bar system structures and thin shells. For their structural design, wind loading is very important since they are sensitive to external loading distribution and stability is an important, even dominant problem. Generally, nonlinear dynamic time-history analysis is an effective way to give a convinced result, but the time-consuming computation and the cost for obtaining the time-series data of wind pressure from wind tunnel tests should be considered at first. At present, usually equivalent static methods based on the quasi-steady assumption are used in the structural wind-resistant design in practice. However, the estimated equivalent static wind loading distribution may not reflect the actual effects of fluctuating wind loading on stability of shells, which may lead to an unsafely higher limit load-carrying capacity. In this paper, wind pressure distribution on a spherical shell model was measured simultaneously in wind tunnel first. A framework for nonlinear dynamic time-history analysis of wind-induced vibration for single-layer reticulated shells was introduced. Based on the measured wind pressure data, nonlinear time-history analysis, including dynamic instability analysis of a single-layer reticulated spherical shell was conducted as an example. Then, several equivalent static wind loading estimation methods were discussed and compared, including a new simple method presented by the authors from the stability point of view. Finally, with comparison analyses, it was proved that the presented method can be used to improve the efficiency of the effective static loading distribution estimation, as well as to give a conservative estimation of the effects of wind loading on single-layer reticulated shells, especially in stability analysis.
Environment Strategy Selection of Enterprise under the Background of Environment Regulation

Circular economy provides strategic theory paradigm for the transformation from traditional economy to sustainable development economy, so that it resolve basically the contradiction between environment conservation and economic development in a long time. As the principal part of economic activities, enterprises’ attitude to the environment strategy directly affects the execution effect of national environment strategy. From the two sides of exterior conditions and interior factors, the paper analyzed the selection games of enterprises’ environment strategy, took an example of Guangxi Guigang National Eco-Industrial Demonstration Parks and explained the feasibility of “win-win” between economy and environment.
About how 'was' 'becomes' : emergence of a sustainable spatial-energy system

In this paper the relationship between the complexity of a spatial system, sustainability and the type of design principles used is researched. In an analytical framework design projects are phased in timeframes and are placed in a complexity-sustainability field. The conclusion is that we are living in a timeframe in which complex systems are most common and that a new planning phenomenon might emerge based on the right impulse at the right time: swarm planning. The aim to reach a fundamental change in our spatial system, leading to a jump ahead in sustainability, is possible by adjusting our designs and planning system to the new laws of swarm. To find the right sustainable impulses to meet these laws an image of a backtracked landscape is useful. Not taking into account the complexity context we are in and not adjusting our planning system accordingly means heading for failure.
Thumb Motor Performance is Greater for Two-Handed Grip Compared to Single-Handed Grip on a Mobile Phone

The aim of this study was to determine if thumb motor performance varied between singlehanded and two-handed grip for thumb tapping tasks on a mobile phone. A secondary aim was to determine if differences in phone movement variation and thumb flexion could account for variations in motor performance across the two grip configurations. Ten right-handed participants (5 males, 5 females) completed reciprocal thumb tapping tasks on an Apple iPhone 3® in a single-handed and a two-handed grip configuration while an active-marker motion capture system measured 3D kinematics of the thumb and phone. The results show that thumb motor performance was significantly greater for the two-handed grip configuration due to less phone movement variation compared to the single-handed grip configuration. Thumb flexion did not significantly vary across configurations. These data suggest that increasing support for the phone such as by using a two-handed grip could lead to increases in tapping performance. For example, increased performance would be expected when using phones that include a landscape mode and are wide enough to allow a stable two-handed grip.
Safety Warnings in Tractor Operation Manuals, 1920–1980: Manuals and Warnings Don't Always Work

This article studies the history of one of the most critical, unresolved problems in mechanized agriculture: Tractor operators do not read the operation manuals, particularly the safety warnings. The result: sustained death and injury of these operators for well over a century. The article tracks the emergence of warnings in tractor operator manuals found in the archives of the University of Nebraska Tractor Test Museum (1919–2007), describes efforts of manufacturers during this time to alert operators to dangers associated with tractors, and concludes with a summary of current research on tractor safety and the problem that remains unresolved: how to change the culture of farmers who use these implements, critical to agriculture production, to encourage them to read and follow safety practices.
A simple and compact model of defects and non-linear dynamic stiffness of a ball bearing

This paper presents a modelling study of a ball bearing dynamic behaviour with different defects types, which is part of an investigation related to the modelling of machinery rotating components. Our contribution in this work is a proposition of a five-degree of freedom model describing the nonlinear dynamic behaviour of a ball bearing. The aim is a parametric formulation of the ball bearing stiffness which allows the introduction of the defects characteristics. This approach is a result of an intrinsic structural behaviour making it different from methods which introduce external impulsion to simulate defects. Hence, a more realistic dynamic ball bearing defect simulation is obtained for better use in design and maintenance domain. This simulation can be formulated by two methods. The first, partial contact method, is based on elimination of some ball stiffness. The second one imposes displacement in the system response. Obtained results give response forms similar to standards and to different author’s results (theoretical and experimental) found in the literature. The developed model is simple, compact as compared to existing ones and we can express our satisfaction about this promising model.
Virtual actuator for Lure systems with Lipschitz-continuous nonlinearity

Abstract In this paper, we extend virtual actuators to Lure systems with Lipschitz-continuous nonlinear characteristic. Virtual actuators are used to reconfigure control laws after the occurrence of actuator failures. They have been developed for linear, Hammerstein-Wiener, and piecewise affine systems and are now made available for Lure systems. Lure systems, which consist of linear dynamics with nonlinear internal feedback, are useful for representing, among others, mechanical systems with friction. We provide sufficient stability conditions for the reconfigured closed-loop system that are also useful for finding the virtual actuator parameters, and evaluate the method by means of an example.
Feature Extraction of Diesel Engine Wear Fault Based on Local Tangent Space Alignment

In view of diesel engine wear fault feature extraction, feature extraction of diesel engine wear fault based on Local Tangent Space Alignment (LTSA) was put forward. This paper analyzes LTSA algorithm which reveals the characteristics of manifold learning. Take diesel engine fault diagnosis test rig as example, vibration information was got through imitating different kinds of diesel engine wear fault. LTSA algorithm was applied for dimensionality reduction. LTSA algorithm’s classification performance was compared in accordance with recognition rate of multi-class SVM. The experimental results show that LTSA has high recognition rate and is a very effective feature extraction method for diesel engine wear fault.
High Throughput System for Geometry Inspection of Large-Size Distributed Objects

he article presents a measurement system designed for “on-line” high throughput simultaneous optical inspection of large set of geometrical parameters (more than 1000 points) defining geometry of some complex surface. The measurement system is based on the distributed network of optical distance sensors. Specialized optical sensor as basic system element was developed for this purpose. Among its features are the following: non-contact measurement, high optical and electromagnetic noise immunity, small footprint, and mass-production oriented. The system allows us to measure up to 1700 linear distance parameters simultaneously in the range of 40mm, with accuracy (3σ) of 0.1 mm and sampling rate of at least 103 Hz.
The Need of Dashboard in Social Research Network Sites for Researchers

Nowadays, dashboard has been widely used by organizations to display information based on their objectives such as monitoring business performance or checking the current trend in the niche market. There is a need to investigate whether the researchers also need the dashboard in assisting their research works. There are some issues facing by researchers while using Social Research Network Sites (SRNS) since they could not noticed with information related to research field that they might be interested in because they are huge amounts of information in the SRNS. The inclusion of dashboard in the SRNS has to be explored to understand its relevancy in supporting the researchers work. We review previous works regarding dashboard usage to find the purposes of having dashboard and find researcher needs by reviewing researchers use scenario in the social networking sites. Then, we analyze whether the dashboard purposes can satisfy the researcher needs. From the analysis, we found out that the dashboard is a significant tool in assisting the researchers on: measuring their own research performance, monitoring research trends and alerting them with upcoming events.
MODEL PREDICTING COST BENEFIT ANALYSIS (CBA) OF ACCIDENT PREVENTION ON CONSTRUCTION PROJECTS

Health and safety issues are major concerns in the United Kingdom (UK) construction industry. Evidence suggests that research studies on construction health and safety management issues have yet to lead to a significant reduction in the number of accidents. To tackle the causes of days lost through accidents and to improve health and safety performance in the construction industry, the industry needs to understand the cost benefit analysis (CBA) of accident prevention. The paper reviewed the rate of accidents in the UK construction industry and presents a model predicting CBA of accident prevention on construction projects. A quantitative method approach was used to collect data from health and safety managers in the UK construction industry for the survey. A total of 79 contractors (small, medium and large) participated in the questionnaire survey. A simple linear regression model was adopted to identify the effect of total costs of accident prevention on benefits of accident prevention. The result revealed that costs of accident prevention are significantly associated with benefits of accident prevention. The model predicted that the more the contractors spend on accident prevention the more the benefit of accident prevention they derived. This is part of a wider study to improve the management of health and safety and to propose a way forward for safer and healthier construction sites. Keywords accident prevention, construction projects, cost benefit analysis, health and safety Language: en
Australia Ae. aegypti mosquitoes are susceptible to a highly divergent and sylvatic dengue virus type 2 strain infection but are unlikely to transmit

Background: Humans are the primary hosts of the dengue virus; However, sylvatic cycles of transmission can occur among non-human primates and human encroachment to forested regions can be a source of emergence of new strains. We reported the isolation of a highly divergent and sylvatic DENV-2 strain (QML22) from a dengue fever patient returning Australia from Borneo. The objective of the present study was to evaluate the vector competence of Australian Ae. aegypti mosquitoes for this virus. Methods: Four-day old mosquitoes from two strains of Ae. aegypti from Queensland, Australia, were feed sheep blood meal containing 108 50% cell culture infectious dose per ml (CCID50/ml) of either QML22 or an Australian epidemic DENV serotype 2 strain (QML16) isolated from a dengue fever patient in 2015. Mosquitoes were maintained at 28°C, 75% relative humidity and sampled at 7, 10 and 14 days post-infection (DPI). Live virions in mosquito bodies (abdomen/thorax), legs and wings and saliva expectorates from individual mosquitoes were quantified using a Cell Culture Enzyme-linked Immunosorbant Assay (CCELISA) to determine infection, dissemination and transmission rates. Findings: The infection and dissemination rates of the sylvatic DENV2 strain, QML22, within mosquitoes were significantly lower than that for QML16. While the titres of virus in the bodies of mosquitoes infected with either of these viruses were similar, titres in legs and wings were significantly lower in mosquitoes infected with QML22 at most time points although they reached similar levels by 14 DPI. QML16 was detected in 16% (n = 25) and 28% (n = 25) of saliva expectorates at 10 and 14 DPI, respectively. In contrast, no virus was detected in the saliva expectorates of QML22 infected mosquitoes. Conclusions: Australia urban/peri-urban Ae.aegypti species are susceptible to infection by the sylvatic and highly divergent DENV-2 virus QML22. However, our results indicate that replication of QML22 is attenuated relative to the contemporary strain QML16 and/or a salivary gland infection or escape barrier acts to prevent infection of saliva, potentially preventing onward transmission of this highly divergent virus in Australia.
Recovery & Treatment of Sexual Addiction: An Interview with Dr. Patrick Carnes

Patrick J. Carnes, PhD, is the founder of the International Institute for Trauma and Addiction Professionals (IITAP) and Gentle Path Press. His extensive background in the field of addiction therapy led Dr. Carnes to develop multiple cutting-edge recovery programs aimed at treating addictive disorders. He serves as executive director of the Gentle Path Program, a residential treatment program for sexual addiction in Wickenburg, Arizona.
An Architecture for Differentiated Services

This document defines an architecture for implementing scalable service differentiation in the Internet. This architecture achieves scalability by aggregating traffic classification state which is conveyed by means of IP-layer packet marking using the DS field [DSFIELD]. Packets are classified and marked to receive a particular per-hop forwarding behavior on nodes along their path. Sophisticated classification, marking, policing, and shaping operations need only be implemented at network boundaries or hosts. Network resources are allocated to traffic streams by service provisioning policies which govern how traffic is marked and conditioned upon entry to a differentiated services-capable network, and how that traffic is forwarded within that network. A wide variety of services can be implemented on top of these building blocks.
BER performance of 166 Mbit/s OOK diffuse indoor IR link employing wavelets and neural networks

The simulated bit error rate (BER) performance of a receiver structure employing wavelet analysis and neural networks in a diffuse indoor infrared (IR) environment operating at 166.6 Mbit/s is presented and discussed. The results are compared with the simulated performance of a zero forcing equaliser system for both baseband OOK-NRZ and OOK-RZ schemes.
A new analysis of recuperative gas turbine cycles

Abstract It is shown that the classical recuperator effectiveness is not an appropriate evaluation criterion for the gas turbine recuperator or a suitable independent thermodynamic parameter of the recuperative gas turbine cycle. Another parameter—the average heat transfer temperature difference in the recuperator—is recommended as the new criterion instead of the recuperator effectiveness. Therefore, the original classical analysis results of the recuperative gas turbine cycle are also inappropriate and it is necessary to give a new analysis. In this paper, the analytical expressions of the simple recuperative cycle efficiency and the optimum pressure ratio based on the new criterion are derived from general simplified assumptions. Some typical calculation results are also presented. With this new criterion, the optimum pressure ratio values for efficiency of a simple recuperative gas turbine cycle do not vary very much with the temperature ratio and are approximately equal to 3, much lower than the figures generally recognized before. A similar analysis for the recuperative gas turbine cycle with intercooler and reheater and an analysis ensuring approximately constant recuperator heat transfer area per unit power output are given also.
Effectiveness measurements and state estimation simulation for DSAP

For Air Operations Centers, there is a need to provide Commanders and their staff with real-time, up-to-the-second information regarding Red-Force, Blue-Force, and neutral force status and positioning. These updates of the real-time picture provide Command Staff with dynamic situational awareness of their operations while considering current and future Courses of Action (COAs). A key shortfall in current capability is that intelligence, surveillance, and reconnaissance (ISR) sensors, electronic intelligence, and human intelligence only provide a snapshot of the operational world from "observable" inputs. While useful, this information only provides a subset of the entire real-time picture. To provide this "missing" information, techniques are required to estimate the state of Red, Blue, and neutral force assets and resources. One such technique for providing this "state" information is to utilize operationally focused simulation to estimate the unobservable data. RAM Laboratories and the Air Force Research Laboratory's Information Systems Research Branch are developing a Dynamic Situation Assessment and Prediction (DSAP) Software Framework that, in part, utilizes embedded real-time simulation in this manner. This paper examines enhancements made to the DSAP infrastructure's Multiple Replication Framework (MRF) and reviews extensions made to provide estimated state information via calibrated real-time simulation. This paper also provides an overview of the Effectiveness Metrics that can be used to evaluate plan effectiveness with respect to the realtime inputs, simulated plan, and user objectives.
Optimization of Piezoelectric Sensors Location and Number Using a Genetic Algorithm

In this article, the optimal location and number of piezoelectric sensors is formulated for active vibration control. A modified criterion is used to ensure good observability of the system by considering the minimum number of needed piezoelectric elements. A genetic algorithm is proposed to solve this bi-objective optimization problem. Simulations are presented for a thin plate.
Recent advances in antilock braking systems and traction control systems

Abstract Antilock braking systems (ABS) are closed-loop devices designed to prevent locking and skidding during braking. Traction control systems (TCS) limit the amount of traction force generated at the wheels to prevent loss of traction. Both systems contain an electronic control unit (ECU), which compares signals from each wheel sensor. In ABS systems, the pressure to one or more of the wheels is regulated, whereas in TCS systems, the drive torque to the wheels is reduced. Recent advances include the use of wireless accelerometers, developments in the control software that take into account the dynamics of the tyres and suspension, the estimation of parameters such as lateral acceleration and wheel slip and the use of adaptive control and fuzzy logic. More recently, these systems have been integrated into other vehicle systems, such as four-wheel steering and active suspension. Future improvements might include the use of smart materials for sensor development, and the use of roadside-to-vehicle control.
A Case Study of RFID-Enabled Payment Device

Payment cards supporting contactless transactions are becoming increasingly popular in recent years. While enjoying the benefits in terms of speed and convenience provided by the new feature, considerable concerns over security and privacy of RFID technology used for contactless payment have been raised for some time. Actually, diverse attacks against fielded systems have already been found and demonstrated. Among the various existing countermeasures, cryptographic solutions are more commonly used as a mechanism for providing security and privacy protections. The goal of this paper is to take a deep insight into one of the RFID-enabled payment devices, known as Digital Signature Transponder (DST). Especially, the explanation of its cryptographic design is presented in detail.