Miracle-dz/UniFAR-FTUs huggingface dataset:
High-Q Spiral Zeroth-Order Resonators for Wireless Power Transmission

In this paper, various spiral zeroth-order resonators are proposed for wireless power transmission. Since a zerothorder resonance(ZOR) mode of meta-material transmission lines has the characteristic of an infinite wavelength, its frequency is independent of physical length. Also, to obtain high transmission efficiencies high-Q resonators and strong coupling coefficient between coupled resonators are required. Therefore, the resonators consist of spiral inductor and lumped capacitor to use the ZOR mode and they are optimized via parametric study and circuit analysis for a high-Q resonator design. The optimized resonators are simulated and compared with a conventional spiral resonator and one of them was fabricated and measured. The fabricated one has a dimension of () and the transmission efficiency of 80 % is measured at 13.56 MHz at transmitted distance of 40 cm.
A New Approach to Eco-Logistics

Solution of problems in the field of ecology and environment has an important place at the state level, but also at the level of civil initiatives and individuals. It is in the result of increasing limitedness of natural resources and environmental consciousness. Eco-logistics is important effective tool which is the object of study, discussions of many experts in logistics, because it provides a wide scope of application. The main mission of eco-logistics is underling the importance of production processes, services and other activities connected with logistics impact on the environment. Suitable way of eco-logistics implementation creates conditions for logistics costs reduction and also for natural resources and environment saving. The paper presents new approach to eco-logistics and its new definition.
Functional traits of particle-associated microbial assemblages in the low-latitude Pacific Ocean

Background Organic particles are hotspots for microbial activity and serve as sites of organic matter mineralisation in the water column of marine systems. In nutrient-limited surface water, degradation of organic matter and nutrient regeneration by marine microbes is crucial. Although free-living (FL) bacteria vastly outnumber those on particles, particle-associated (PA) bacteria can reach locally higher concentrations. Accordingly, to achieve a better understanding of marine microbial ecosystems, it is important to elucidate the differences in not only microbial community structures, but also functional traits, between PA and FL environmental sample fractions. In a previous study, we demonstrated that the Genomaple (formerly MAPLE) system could successfully differentiate the functional potentials and diversity of contributors to each function in four metagenomic datasets generated by the Global Ocean Sampling expedition. Hence, we also used this system to highlight functional traits in PA microbial assemblages. Results The PA and FL fractions could be distinguished from one another by their taxonomic compositions, inferred from ribosomal proteins and relative abundance of module functions. Module functions that were more abundant among PA assemblages than FL assemblages were shared between both subtropical gyres, and their taxonomic compositions were similar. Bacterial transport systems associated with adhesive molecules used for forming microbial assemblages through particulate organic matter were more abundant in the PA fractions. Bacterial regulatory system elements for C 4 -dicarboxylate transport and B-vitamin biosynthesis were also abundant among PA assemblages, suggesting mutual relationships between bacteria and algae involved in exchange of nutrient sources. On the other hand, module functions related to amino acid biosynthesis and bacterial transport systems for inorganic nitrogen, phosphorus, and urea were significantly more abundant in the PA assemblages of more oligotrophic North and South Pacific subtropical gyres than eastern equatorial Pacific regions. Conclusions Comprehensive functional metagenomic analyses based on functional abundance revealed some notable functional traits in PA assemblages related to cell adhesion and nutrient acquisition, enabling the microbes to survive in subtropical regions that are more oligotrophic than the equatorial regions.
Double channel triple band MIMO antenna with high isolation performance and pattern diversity for wireless applications

A miniaturized monopole antenna with filtering properties is presented.An S‐shape double channel compact multi‐input multi‐output antenna with high isolation performance for DSC‐1800, PCS‐1900, WiMax 3.5 GHz, and WLAN applications is presented in this letter. A total impedance matching bandwidth of larger than 40% for three operating bands is attained through measurements. S‐shape structure has been introduced to reduce the overall width of the diversity configuration to 50 mm. The isolation between the two ports is greater than 24 dB and the envelope correlation is less than 0.0058 over all three bands. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:2689–2691, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27189
Investigation of Power Grid Islanding Based on Nonlinear Koopman Modes (非線形問題)

To view the electricity supply in our society as just sockets mounted in our walls with a constant voltage output is far from the truth. In reality, the power system supplying the electricity or the grid, is the most complex man-made dynamical system there is. It demands severe control and safety measures to ensure a reliable supply of electric power. Throughout the world, incidents of widespread power grid failures have been continuously reported. The state where electricity delivery to customers is terminated by a disturbance is called a blackout. From a state of seemingly stable operating conditions, the grid can fast derail into an uncontrollable state due to cascading failures. Transmission lines become automatically disconnected due to power flow redirections and parts of the grid become isolated and islands are formed. An islanded sub-grid incapable of maintaining safe operation conditions experiences a blackout. A widespread blackout is a rare, but an extremely costly and hazardous event for society. During recent years, many methods to prevent these kinds of events have been suggested. Controlled islanding has been a commonly suggested strategy to save the entire grid or parts of the grid from a blackout. Controlled islanding is a strategy of emergency control of a power grid, in which the grid is intentionally split into a set of islanded subgrids for avoiding an entire collapse. The key point in the strategy is to determine appropriate separation boundaries, i.e. the set of transmission lines separating the grid into two or more isolated parts. The power grid exhibits highly nonlinear response in the case of large failures. Therefore, this thesis proposes a new controlled islanding method for power grids based on the nonlinear Koopman Mode Analysis (KMA). The KMA is a new analyzing technique of nonlinear dynamics based on the so-called Koopman operator. Based on sampled data following a disturbance, KMA is used to identify suitable partitions of the grid. The KMA-based islanding method is numerically investigated with two well-known test systems proposed by the Institute of Electrical and Electronics Engineers (IEEE). By simulations of controlled islanding in the test system, it is demonstrated that the grid’s response following a fault can be improved with the proposed method. The proposed method is compared to a method of partitioning power grids based on spectral graph theory which captures the structural properties of a network. It is shown that the intrinsic structural properties of a grid characterized by spectral graph theory are also captured by the KMA. This is shown both by numerical simulations and a theoretical analysis.
A Proposed Working Definition for the Novel Concept of Neurobehavioral Hormesis

It is proposed that a novel concept, neurobehavioral hormesis, be considered for integration into the field of toxicology. Hormesis results in a non-linear dose response where low dose exposures to toxicants cause beneficial effects, and detrimental effects at higher doses. Hormesis has not been systematically incorporated into traditional risk assessment methodologies, yet there is recent evidence that this pattern of results is relatively prevalent. In this paper, hormesis is applied to neurobehavioral toxicology, and an operational definition is proposed for application to putative examples of neurobehavioral hormesis. The two primary criteria used for the operational definition are: (1) performance is enhanced with low dose exposure and denigrated at higher doses, and (2) the change in behavior persists following a recovery period. In recent research from our laboratory it was reported that rats exposed to JP-8 jet fuel vapor demonstrated such a pattern of neurobehavioral performance on tests of learning and memory. Specifically, animals with long-term exposure to low concentrations of jet fuel demonstrated enhanced performance on specific operant tasks as compared both to controls and to animals exposed to higher concentrations. The effect was most apparent during complex versus simple operant tests, and was observed months following the last exposure to jet fuel. The effects meet both criteria for the proposed working definition of neurobehavioral hormesis, and thus provide evidence of the validity for considering neurobehavioral hormesis in published and future research, and suggests a more systematic investigation of existing literature may be warranted. Also, it provides additional support for the overall proposal to include hormetic effects in formal risk assessment paradigms.
Hybrid PSTD‐FDTD technique for scattering analysis

This paper employs a hybrid method that combines the pseudo‐spectral time‐domain (PSTD) algorithm and the finite‐difference–time‐domain (FDTD) method to analyze the scattering problems involving fine structures. In principle, the PSTD is applied in a direction with low‐density variation of structures but large computation volume, whereas the FDTD is used in other directions with high‐density variation and relatively small computation dimensions. In implementation of this hybrid algorithm, the pure scattered‐field formulation is utilized to introduce the incident wave, and a hybrid near‐to‐far‐zone field transform is developed for calculating the scattering width (SW) of the targets. The hybrid method is illustrated by analyzing two canonical scattering targets: a thin dielectric slab and a conductor‐backed dielectric slab. It is observed that the proposed algorithm is very accurate and efficient compared to the FDTD calculations for the same cases investigated. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 34: 19–24, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10361
Exact 3D Thermoelectroelastic Analysis of Piezoelectric Plates through a Sampling Surfaces Method

The article focuses on the use of the method of sampling surfaces (SaS) to exact three-dimensional (3D) solutions of the steady-state problem of thermoelectroelasticity for piezoelectric laminated plates subjected to thermal loading. The SaS method is based on selecting inside the nth layer In not equally spaced SaS parallel to the middle surface of the plate in order to choose temperatures, electric potentials, and displacements of these surfaces as basic plate variables. This permits the representation of the proposed thermopiezoelectric plate formulation in a very compact form. The SaS are located inside each layer at Chebyshev polynomial nodes that improves the convergence of the SaS method significantly. As a result, the SaS method can be applied to 3D exact solutions of thermoelectroelasticity for piezoelectric laminated plates with a specified accuracy using the sufficient number of SaS.
Analysis on the associated factors of drop-out from HIV antiviral treatment in Kunming City

Background:With the implementation of national anti-viral treatment and expanded treatment policies, the number of HIV-infected people receiving anti-viral treatment is increasing, and the number of people drop out of ART is also increasing year by year in Kunming. Thus,the aim of this study was to investigate the causes and influencing factors of drop out in treatment of HIV infection in Kunming and to explore the countermeasures to reduce the rate of drop out.Methods:Using convenient sampling method, the HIV infected people found in Kunming as of August 31, 2018 were selected.187 patients who had received antiviral treatment were treated as the treatment group, and 252 patients who had received antiviral treatment but drop out were treated as the drop out group.Results:Multivariate analysis shows that geographical division, monthly income, whether or not to receive minimum living allowance, and referral methods of follow-up institutions are the factors that affect the drop out of antiviral treatment of HIV infected persons. Conclusion:To increase the attention of vulnerable patients in ART, patients with adverse reactions to treatment drugs should be treated or replaced in a timely manner, and AIDS-related medical services and government support should be strengthened in order to reduce the rate of drop out.
Frequency-domain passivity-based current controller design

Current controller design for three-phase voltage-source converters, by which a passive input admittance is ideally obtained, is considered. Two design alternatives, with and without voltage feedforward, respectively, are shown to give similar performance. It is demonstrated how additional parts can be added to the controller while preserving the passivity property. This is applied particularly to resonant parts. The design method is finally applied to converters with an LCL input filter, where it is shown in many cases to compare favourably with a scheme where an inner loop is added for improved damping of the LCL resonance.
Distributed Formation Control using Consensus for Multiple Humanoid Robots

Formation control in multi-robot is one of the problems widely studied and variety of methods have been developed with their own advantages and disadvantages. Distributed control has the advantage in that it does not require centralized coordination, allowing rapid restructuring in the event of failure of one of the agents. Another advantages include saving computation power, amount of data transmitted over communication, and immunity to delay. In this research a distributed formation controller is designed and implemented in humanoid robots. The distributed controller is designed consisting of layer for tracking, layer for constructing the formation, and consensus layer that keeps the error between each agent can be agreed upon so that a reference can be achieved together. To solve the problem of bad odometry suffered by legged mobile robot caused by the slip between the legs with a floor, visual odometry is employed using the ceiling camera. The control system is simulated using GNU-Octave software and implemented on humanoid robots NAO from Aldebaran. Experiment demonstrates that the distributed controllers are able to closely follow the desired reference.
Relationship Between Undernutrition and Periodontal Diseases Among Yemen Population: a Cross-sectional Study

Background: Undernutrition is an inadequate supply of energy and nutrients. Periodontal diseases (PDs) defined as a broad form of chronic inflammatory diseases of the gingiva, bone and ligaments supporting the teeth. This study aimed to reveal the effect of undernutrition, using body mass index (BMI) and serum albumin level (Alb) on PDs and other risk factors as age, smoking and khat chewing. Methods: This was a cross-sectional study conducted at the faculty of dentistry, Sana’a University. Of 1920 patients attended to clinics, only 229 matched the study criteria. Oral examination was performed to assess the periodontal clinical parameters measurements. BMI and Alb was measured. Statistical analysis was used to present the association between categorical variables was assessed using Chi square test and Fisher-Exact test. ANOVA was used to assess the differences in the mean values of the quantitative outcomes. Chi square test was used to evaluate the association between BMI and age, gender, occupation, education level, smoking, khat chewing as well as BMI with PDs. Results: Most of participants (58.5%) were males and most of the study sample (91.3%) was at the age group of (18-35). Among all subjects, (81.2%) of cases were diagnosed with gingivitis. (60.7%) of study participants were mildly undernourished according to BMI. (93%) of participants showed normal Alb level. Regarding to habits, only (18.2%) of patients were smokers and more than half of participants (59.4%) were khat chewers. Conclusion: There was a relationship between PDs and undernutrition which was obviously seen between gingivitis and mild undernutrition.
A Test Case for the Numerical Investigation of Wake Passing Effects on a Highly Loaded LP Turbine Cascade Blade

The paper presents a compilation of experimental data on the effects of wake-induced transition on a highly loaded LP turbine cascade intended to be used for further numerical work. Although the underlying physics is not yet completely understood, the benefits of wake passing are already known and employed in the design process of modern gas turbines. For further optimizations, the next step seems to be now to enable numerical simulations detailed enough to capture the major effects while being as uncomplicated as possible at the same time to be cost-effective. The experimental results constituted in this systematic investigation are available for download and should serve as a basic data set for future calculations with different turbulence and transition models, thereby shedding some light on the complexity and modeling required for a suitable numerical treatment of the wake-induced transition process.The data introduced in this test case was acquired using a turbine cascade called T106D-EIZ with increased blade pitch compared to design point conditions in order to achieve a higher loading. A large separation bubble forms on the suction side and allows to study boundary layer development in great detail. The upstream blade row was simulated by a moving bar type wake generator. The measurements comprise hot wire data of the bar wake characteristics in the cascade inlet plane (velocity deficit and turbulence level), boundary layer surveys with surface-mounted hot films sensors and a hot wire probe at various locations and measurements of the total pressure loss coefficient. Unsteady pressure transducers are embedded into the suction side of a cascade blade and in a wake rake to resolve the local pressure distributions over time. They yield quantitative values easily comparable to the output of numerical simulations.The objective of this paper is to enable and to invite interested researchers to validate their code on the data set. From the extensive test program, a very limited number of operating points have been selected to focus the work. The standardized data files include a “reference” case with an exit Reynolds number of 200.000 and an exit Mach number of 0.4 as well as two points with higher Mach or lower Reynolds number for constant wake passing frequencies and background turbulence levels.Copyright © 2001 by ASME
Yagi-Uda antenna with small size for vehicles

A compact Yagi-Uda antenna for vehicle directional communications in tactical VHF (30-88-MHz) is presented. A special double-folded monopole is designed as the element of the Yagi-Uda antenna to realise compact size and high directivity. The proposed antenna designed and optimised at 59-MHz can utilise the vehicle space reasonably with greatly compact height (0.1199-) and space between elements (0.125-). It has satisfactory performances of high directivity, gain (6.3-dBi) and front-to-back ratio (8.6-dB) in the operating band (VSWR-2), better than the typical monopole-type Yagi-Uda antenna. Thus, it is suitable for vehicle directional communications in tactical VHF. The effectiveness of the design is verified by a scaled-down model at 1-GHz.
DSOPP:An intelligent platform for distributed simulation of order promising protocols in supply chain networks

Abstract This paper describes the DSOPP platform being built at Dalhousie University to simulate intelligent order promising protocols using an agent-based approach. The unique feature of this platform is that it supports order promising in a distributed network with several decision making stages, each representing a supply chain network. Moreover, promising of orders in each of the stages is based on optimization. The platform will be used to compare and contrast several different order promising protocols.
Pre-service Teachers’ Adoption of a Makerspace

Innovation includes new inventions, new ideas, or new methods. Everett Rogers’ Diffusion of Innovations framework, however, suggests not all are willing to adopt innovation. Technology Acceptance Model (TAM) indicates that perceived usefulness and perceived ease of use influence one’s choice to use available technology. Since the nature of work is rapidly changing, the future workforce needs to be prepared to innovate or adopt innovation. This means that educators also need to be innovators or early adopters. In this study, education majors in an instructional technology class in the United States were introduced to the idea of a makerspace. When they were given choices, some participants tried new tools or methods without the instructor’s assistance, and some tried with the assistance. However, there was also a group of education majors who chose not to try out new tools or methods, even they knew that the help was available. This finding implies that Rogers’ theory about people’s aptitude of adopting innovation and TAM are applicable to future educators.
Objective Response Detection of Multiple Auditory Steady-State Responses: Rice Detector vs Component Synchrony Measure

Multiple auditory steady state responses (MASSR) is used to assess the integrity auditory pathways for different frequencies applied simultaneously without significant increases in exam time. Objective Response Detection (ORD) techniques have been employed for hearing screening since it conducts to response identification with statistical basis. This work aims at comparing time and detection rate of two ORD, Rice detector (RD) and Component Synchrony Measure (CSM). The binaural auditory stimulation was applied to 21 normal hearing infants and consisted of four amplitude-modulated (AM) tones presented simultaneously on each ear with the carriers 500, 1000, 2000 and 4000 Hz, and at 50 and 40 dBSPL intensity levels. The CSM presented higher detection rates than RD for all carriers, both intensities and ears (statistical difference, assessed by proportion test with significance level of alfa=0.05, only for 500 Hz in both ears and for 1000 Hz in the left ear). Moreover, detection times were lower for CSM compared to RD (unpaired Wilcoxon rank-sum test with alfa=0.05 indicated statistical difference for 1000 Hz at 50 dBSPL and 2000 Hz at 50 dBSPL both for the left ear). Hence, the CSM could be considered more effective for hearing screening purposes.