Miracle-dz/UniFAR-FTUs huggingface dataset:
Uso de traçadores para avaliação da hidrodinâmica de sistemas alagados construídos operando sob condições climáticas tropicais

Nowadays, constructed wetlands (CW) systems are an important wastewater treatment option. Subsurface flow (SSF) constructed wetlands are one of the main types which are being used, and in researches, these systems dyes tracer experiments are an appropriate tool to determine residence time distribution (RDT) curves and parameters of hydrodynamic models, as a wetland dispersion numbers and hydraulic efficiency. The objectives of this paper are to evaluate and compare the performance of two fluorescent tracers (rhodamine WT and sodium fluorescein) on subsurface-flow CWs hydrodynamic characteristics determination. The cells were operated at actual hydraulic residence time (τR) of a 4.5 d ~ 5.0 d range and the parameters of theoretical models were obtained for each system, indicating very low dispersion. The CWs with length/widths ratio equals to 24 presented as plug flow near systems. Although the recovery of total amount was small (high absorption is one of the loss mechanisms during these types of studies), rhodamine WT is a suitable tracer in mesocosms SSF constructed wetland systems of study.
Safety and efficacy of sorbitan monolaurate as a feed additive for all animal species

Abstract The additive sorbitan monolaurate consists of sorbitol (and its anhydrides) esterified with fatty acids derived from coconut oil. It is intended to be used as a technological additive, functional group: emulsifier, in feedingstuffs for all animal species, at a maximum concentration of 85 mg/kg complete feed. The EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) concluded that sorbitan monolaurate is safe for all animal species at the proposed maximum content of 85 mg/kg complete feed and that the use of sorbitan monolaurate in animal nutrition is not expected to pose a risk for the consumer under the proposed conditions of use. Users are unlikely to be exposed to sorbitan monolaurate via inhalation. Sorbitan monolaurate is irritant to skin and eyes and it is not considered a skin sensitiser. Owing the lack of data, the FEEDAP Panel cannot conclude on the safety of the additive for the environment. Sorbitan monolaurate is authorised for use as a food additive with the function of emulsifier. The technological effect underlying its use as a food additive could reasonably be expected to be seen when used in feed.
The influence of partnering and procurement on subcontractor involvement and innovation

Purpose – The aim of this paper is to investigate how a client's cooperative procurement procedures influence subcontractor involvement, value creation, and innovation in the construction of complex facilities.Design/methodology/approach – Empirical data were collected through interviews, surveys and participation in workshops during a longitudinal action research case study. The case project was located in Sweden and concerned the construction of plant facilities for manufacturing of pharmaceutical products.Findings – The case study findings reveal that the client's procurement procedures affect the level of subcontractor involvement and integration, but that this does not necessarily result in increased subcontractor value creation and innovation in the construction process.Research limitations/implications – Since the empirical results are based on data collected from only one case project, the possibilities for generalisations are limited.Practical implications – Clients' procurement procedures heavil.
Identification of reheat furnace temperature models from closed‐loop data—an industrial case study

This work deals with the application of prediction error (PE) method to identify the furnace temperature models from a set of closed-loop data. In this study, we gather a set of measurement data of the set points of the furnace zone temperatures as inputs and the furnace sidewall temperatures as outputs under a dynamic change of the slab pace rate. Owing to the complexity of its process dynamics, we assume no knowledge about the nature of the feedback mechanism. By treating the slab pace rate as an additive external signal, we show that the closed-loop data is informative for applying a direct approach to the closed-loop identification using the PE method, but only for a particular class of model structures. Model validation results support this analysis, in which the identified ARX, Box–Jenkins, and state-space models are reasonably better than the identified FIR models, according to the Akaike's index and the one-step-ahead prediction criteria. The residual analysis reveals that the identified ARX, Box–Jenkins, and state-space models do satisfy a 99% confidence region of its auto- and cross-correlation functions. Moreover, we find out that, for the collected data, there is no significant difference in the model predictive quality when applying the MISO and MIMO PE methods using the state-space model structure. © 2006 Curtin University of Technology and John Wiley & Sons, Ltd.
Optimizing Advertising Using Wireless Communication Technology: A Zero-Inflated Poisson Approach

Recently, more and more companies are using wireless location technology to improve advertising effectiveness. Although location-targeted advertising seemingly offers practitioners tremendous potential given the ubiquitous nature of mobile devices, we know very little about it. Base on field experiment data, the developed zero-inflated Poisson model reveals that distance, discount and CSR(Corporate Social Responsibility) could affect sales impact of advertising while using wireless communication technology. These results have implications for mobile marketing research and practice while using wireless communication technology.
An improved fault ride-through strategy for doubly fed induction generator-based wind turbines

Keeping the generators operating during transient grid faults becomes an obligation for the bulk wind generation units connected to the transmission network and it is highly desired for distribution wind generators. A proposed scheme is implemented to keep the wind-power DFIG operating during transient grid faults. Challenges imposed on the generator configuration and the control during the fault and recovering periods are presented. A comprehensive time domain model for the DFIG with the decoupled dq controller is implemented using Matlab/Simulink software. Intensive simulation results are discussed to ensure the validity and feasibility of the proposed fault ride through technique. The scheme protects the DFIG components, fulfills the grid code requirements and optimises the hardware added to the generator.
Optimal Design of an IPMSM for High-Speed Operation Using Electromagnetic and Stress Analysis

In the development of an interior permanent magnet synchronous machine (IPMSM) for high-speed operation, the problem of mechanical stress of the rotor by centrifugal force becomes more essential as the speed and size of the machines increase. In this paper, the optimal design process combined with mechanical stress analysis was presented. In the analysis of mechanical stress, the node and element data obtained by the electromagnetic field analysis program are also used in the stress analysis. Therefore, the different pre-processing for the stress analysis program is no longer required. Therefore, the computing time of the new method is very short compared with the conventional approach, and when repeated analyzes of various models are required, this method is very useful. The validity of our methods was verified by comparing simulation results with conventional and experimental data.
Investigating Vocational High School Students’ Cognitive Load of Infusing Nanotechnology into Electronics Subjects

The purposes of this study were to develop a novel material which was infused nanotechnology into electronics subjects to vocational high school students’with no background in nanotechnology. And then to investigate the cognitive load of them, after they learnedthenovel curriculum pattern. The researchers began todevelop a novel electricsmaterial which is consisted of four chapters includedseven sectionsby experts of electronics, nanotechnology and vocational education. Theexperimentswere conducted by using PPT pedagogy to teach the nanotechnology infused into electronicscourse between twodepartments ofvocational high schools. After four months and four times in one month experimental teaching, cognitive load scale questionnaireand K of KAP scale questionnairewere examined.Finally, the applications of this materialare illustrated that the performances of K scores weresignificant differencebetween electronic engineering department and information engineering department.
Design of injection-locked oscillator circuits using an HBT X-parameters™-based model

A load independent X-parameters-based heterojunction bipolar transistor (HBT) model has been used for the first time in the design and behaviour prediction of injection-locked oscillator circuits. This model has been extracted from load-pull measurements with a large-signal network analyser and, in order to obtain a high oscillator RF power, targeting a load impedance close to the optimum one for HBT maximum output power. A methodology is given to obtain robust injection-locked oscillator circuits with a high-synchronisation bandwidth. Several injection-locked oscillator prototypes have been designed and fabricated, and their measurements compared with the simulations obtained using the X-parameters model. Satisfactory results were obtained when the prototypes were operated as free-running and synchronised oscillators.
Influence of different zirconia surface treatments on biofilm formation in vitro and in situ

Abstract Objectives To determine whether the surface treatment of zirconia affects biofilm formation in an in vitro three‐species biofilm model and in situ. Material and methods Zirconia surfaces considered for the transmucosal portion of a zirconia implant were compared with polished pure titanium grade 4 (Tp). Disks 13 mm in diameter of either polished (Zp), polished and heat‐treated (Zpt), machined (Zm), machined and heat‐treated (Zmt) and sandblasted, etched and heat‐treated (Z14) zirconia were fabricated. Surface roughness and wettability of specimens was measured. Biofilm formation was evaluated by safranin staining and scanning electron microscopy (SEM) using a three‐species model, and intraorally with 16 volunteers carrying oral splints in two independent experiments. Relative biofilm formation was compared with Kruskal–Wallis followed by Bonferroni post hoc test (α = 0.05). Results In vitro biofilm formation with optical density values on Zp (0.14 ± 0.01), Zpt (0.14 ± 0.02), Zm (0.13 ± 0.01) and Zmt (0.13 ± 0.01) was significantly lower than on Tp (0.21 ± 0.05) and Z14 (0.20 ± 0.04) (p < .05). In situ biofilm formation was significantly higher on Z14 (0.56 ± 0.45) (p < .05), while no significant differences in optical density were observed among Zp (0.25 ± 0.20), Zm (0.36 ± 0.34) and Tp (0.28 ± 0.22). SEM analysis supported quantitative findings. Conclusions In the in vitro, three‐species biofilm model differences in material and surface roughness affected biofilm formation. In situ biofilm formation was mainly affected by the surface roughness of the specimens. Polishing of zirconia is recommended to reduce biofilm formation, while heat treatment has no significant effect.
Hybrid electromagnetic micro-relay with fast response and bistable operation mode

A hybrid electromagnetic micro-relay with a bistable wiggling microactuator and a micro-fabricated electrical brush is developed. The switching power consumption is only 28.8 mJ owing to the bistable operation but the switching time is as short as 0.3 mS because of the in-plane movement and sandwich driving mechanism. As a power relay its maximum load current is over 2 A.
Strain sensor without temperature compensation based on LPFG with strongly rotary refractive index modulation

The strain and temperature characteristics of a novel long-period fibre grating with strongly rotary refractive index change modulation (S-R-LPFG) was investigated, this believed to be for the first time. It was observed that the two split resonant peaks continually separated when the strain was applied to it, and the temperature sensitivities are all 0.07 nm/°C. Such kinds of S-R-LPFG can be used to measure strain by using the wavelength difference between the two split peaks, which do not need temperature compensation because the two peaks shift to the same direction and have the same temperature sensitivity when environmental temperature changes.
An optimization model for workgroup-based repetitive scheduling

Most construction repetitive scheduling methods developed so far have been based on the premise that a repetitive project is comprised of many identical production units. Recently, Huang and Sun (2005) developed a workgroup-based repetitive scheduling method that takes the view that a repetitive construction project consists of repetitive activities of workgroups. Instead of repetitive production units, workgroups with repetitive or similar activities in a repetitive project are identified and employed in the planning and scheduling. The workgroup-based approach adds more flexibility to the planning and scheduling of repetitive construction projects and enhances the effectiveness of repetitive scheduling. This work builds on previous research and develops an optimization model for workgroup-based repetitive scheduling. A genetic algorithm (GA) is employed in model formation for finding the optimal or near-optimal solution. A chromosome representation, as well as specification of other parameters for GA an.
Rapid analysis of microbial systems using vibrational spectroscopy and supervised learning methods: application to the discrimination between methicillin-resistant and methicillin-susceptible Staphy

FTIR spectra were obtained from 15 methicillin-resistant and 22 methicillin-susceptible Staphylococcus aureus strains using our DRASTIC approach. Cluster analysis showed that the major source of variation between the IR spectra was not due to their resistance or susceptibility to methicillin; indeed early studies suing pyrolysis mass spectrometry had shown that this unsupervised analysis gave information on the phage group of the bacteria. By contrast, artificial neural networks, based on a supervised learning, could be trained to recognize those aspects of the IR spectra which differentiated methicillin-resistant from methicillin- susceptible strains. These results give the first demonstration that the combination of FTIR with neural networks can provide a very rapid and accurate antibiotic susceptibility testing technique.
Testing the Behavioral Intentions Model of Online Shopping for Clothing

This study tested the predictability of modified Fishbein’s behavioral intentions model in the context of online shopping for clothing. Specifically, the study examined the relative importance of attitude and subjective norm in influencing consumer intention to shop for clothing online. A mailing survey was conducted with 303 adults who had a computer at home and had access to the Internet in the United States. Data were analyzed to estimate the behavioral intention model of online shopping (i.e., measurement model and structural model). Attitude toward online shopping was composed of two factors: product and convenience and service. The results supported the modified behavioral intentions model; both attitude and subjective norm influenced behavioral intention. Implications are drawn for online retailers of clothing.
Optimizing Flight Crew Schedules

Because of restrictive work rules and interacting cost components, building flight crew schedules is a complex process. However, operations research techniques have been successful in reducing crew costs. The optimization is modeled as a set-partitioning problem, where the rows represent flights to be covered and the columns represent candidate crew trips. The work rules dictate whether or not a particular crew trip is valid, while the major cost components affect its desirability. Solving many sets of small subproblems has been more successful than attempting to find a global solution to a single large problem because of combinatorial problems and non-integer solutions. At American Airlines, the savings of the integer linear programming (ILP) approach relative to the enumeration methods previously used is estimated at $18 million per year. Intuitive evidence suggests that a global optimum is being achieved for small fleets (200 flights per day or less), but that additional savings are possible in the lar.
Simplified distributed temperature sensor using stimulated Brillouin scattering

A new scheme for distributed fiber sensing of temperature profiles is presented. The realized sensor is based on the generation of stimulated Brillouin scattering by a multiple-frequency Nd:YLF laser, having a mode difference frequency close to the Brillouin frequency shift. The resulting low-frequency Brillouin beat signal allows the realization of a simplified detection scheme, employing a low-cost detector and conventional signal processing techniques.
Aircraft Maintenance Management Systems

The topic of this paper is somewhat different from what is very often heard from computer or system people. This paper does not present any revolution in system applications or any new techniques. What this paper presents is a very unique system application concept as implemented at Bedek Aviation to solve the Division's aircraft maintenance environment problems. The uniqueness of this concept is in its simplicity.
Enhanced-bandwidth PIFA with T-shaped ground plane

A planar inverted-F antenna (PIFA) with a T-shaped ground plane is presented. The measured results of the proposed antenna show that by using a T-shaped ground plane, the bandwidth of a PIFA can be broadened and the operation frequency of the PIFA can be reduced. The relative measured bandwidth of the proposed antenna operating at 2.05 GHz band is 16.6%.
Tribological characteristics of DLC-coated alumina at high temperatures

Ceramic seals are widely used in many severe applications such as in corrosive, high temperature and highly loaded situations especially in hot chemical water-based extreme environments for automobile water pumps. Presently, polymeric materials are used as the counter part for alumina ceramic seals to reduce the ceramic-to-ceramic wear. As a result, leaks are very commonly observed from water pump during services. Consequently, it is needed to improve the surface properties of the ceramic seals using a surface modification technique such as a thin film coating process to meet the increasing demand of more stability, more durability, and lower friction of coefficient in those extreme environments. To meet these challenges, we have applied DLC (diamond-like carbon) coatings on alumina using a PIID (plasma immersion ion deposition) technique intended for seal applications. The DLC-coated specimens were tested under a wide range of temperature conditions, from room temperature up to 400°C, using a high temperature pin-on-disk tribo-tester. After that, the wear-tested specimens were analyzed using SEM with EDS to characterize the worn surfaces. Morphological changes of the DLC coated surfaces before and after the wear tests were studied. Under certain deposition conditions DLC performed very well up to 400°C. However, under other conditions, DLC failed catastrophically. In this paper we will present the friction and wear characteristics of the DLC-coated alumina. Finally, we will discuss the failure mode of DLC coatings.
Water Resource Scarcity and Social Adaptive Capacity for Regional Sustainable Development - A Case Study of Beijing and Tianjin

The adaptive capacity to water resource scarcity is closely connected to social and economic issues and it is one of the key factors of the regional sustainable development. Accurate evaluation of the adaptive capacity is an important factor to understand the development potential of a region. Through introducing the concept of social adaptive ability, this paper combines social adaptive ability with the dynamic evaluation of water resource scarcity and sustainable supply capacity as a new evaluation method. The data from two provincial-level municipalities of China (Beijing and Tianjin) are selected as a case to evaluate regional sustainable development. The results show that social adaptive ability can increase water supply capacity and provide strong support for regional sustainable development.
Self-regulated learning, academic achievement and socioeconomic context at the end of primary school

The increase of inequalities and the learning crisis due to COVID-19 pandemic has forced to review the role of education in the attainment of skills to learn throughout life. The purpose of this study is to investigate the incidence of the academic achievement on selfregulation strategies (forethought, inhibition and volitional inhibition), considering the socioeconomical context at the end of elementary school. The SRL strategies are assessed, from the perspective of students and teachers, triangulating measurement in different tasks. 67 students in their last year of primary education participated. The SRL measures were compared using robust tests considering high and low academic achievement and low and medium socioeconomic context (robust version of Welch’s test for two groups, Yuen’s test, and two-way ANOVA based on trimmed means and Winsorized variances). The academic achievement affects and significantly predicts the forethought strategy. In the low socioeconomical context, the students with a high academic achievement maximize their SRL. The modulating role of the school experience in self-regulation is discussed.
Building Sound Foundations for Smart City Government: The Case of Munich, Germany

City governments around the world have increasingly engaged in "smart city" initiatives. Information and communication technologies (ICTs) are at the core of these initiatives. City governments appear to play important roles in making the urban spaces, in which they are embedded, more attractive, more competitive, more livable, and smarter. The authors interviewed City officials in Munich, Germany, and asked for the definitions of "smart city," which they then compared to Munich's smart city-related program. While the practitioners' definitions differed in part from those in the academic literature, the smart city overhaul program at Munich city government had a direct relationship to the practitioners' understanding of smartness. The authors portray and discuss the City of Munich institutional architecture overhaul and its expected and realized benefits, and compare the results to those of an earlier study on the City of Seattle. Both city governments evidently pursue different approaches, the effectiveness of which can more readily be assessed only at a future point of the smart city evolution.