Miracle-dz/UniFAR-FTUs huggingface dataset:
Escorting children to school: Statistical analysis and applied Modeling approach

An important aspect of intrahousehold interactions-joint travel arrangements that arise when adult household members escort children to school-is investigated. Previously published research on intrahousehold interactions have focused mostly on time allocation or episode generation between individual and joint activities and have largely been limited to interactions between household heads. Insights into the less-explored aspect of intrahousehold interactions between adults and children in the household are provided. Children are explicitly considered active agents in the intrahousehold decision making, and the interaction itself takes the form of a joint travel arrangement rather than a shared activity. A statistical analysis indicates the importance of this segment of intrahousehold interactions in the overall system of household activity and travel. A choice model, which is formulated and estimated, relates the probability of various types of ridesharing and escorting to the person, household, and zonal.
Instability Of An Elliptical Flow:Weakly Nonlinear Analysis

Elliptical flows are of interest since they appear in various vortical flows in which circular vortices are deformed by straining flow. We study the nonlinear evolution of an elliptical flow by weakly nonlinear analysis. Two sets of amplitude equations are derived for different situations. First, the evolution of bending waves is considered. Nonlinear interaction of the two base Kelvin waves results in cubic nonlinear terms, which leads to saturation of the elliptical instability. Next, the secondary instability is considered.Three Kelvin waves, one of which is a bending wave, form a resonant triad thanks to freedom of wavenumber shift. As a result three-wave equations augmented with linear terms are obtained as amplitude equations. They explain thepreviousnumericalresults on the secondaryinstability obtained by Kerswell J. Fluid Mech. , 382, pp. 283‐386, 1999.
AC 2009-2507: CPAS: ON THE STRUCTURE AND USABILITY OF A COURSE PLANNING AND AUDIT SYSTEM

We present CPAS, a system that allows students and their advisors to track progress in an academic program. Our design is able to perform a semi-automatic audit of degree requirements; the only human-approved components are ones that require discretion. The underlying mechanism is based on robust propositional logic with extensions that make the entry, interpretation, and audit of complex degree requirements straightforward. The system also includes support for human-approved requirements due to the natural discretion that must be applied when evaluating certain requirements, such as multiple courses with a “cohesive theme”. Additionally, we demonstrate an implementation, which focuses on providing a clear, straightforward interface for all users while maintaining the appropriate level of security and privacy. To the best of our knowledge, CPAS is the first degree audit system that was designed with a web-based, graphical interface from the start. CPAS indicates in simple terms how a student is progressing in the degree and allows students to explore other academic programs offered at their university. We also address several key software engineering research questions, such as the storage of complex major requirements and the design of lucid user interfaces for a variety of users. Considering the number of academic institutions and the variety of academic programs offered, quantifying and collecting correct expressions for major requirements in our system is a nontrivial problem. We explore the possibility of using a collaborative social network, with appropriate security and quality controls, for this purpose. We show how CPAS was used to enter the major requirements of complete academic programs and present a visualization functionality that illustrates such programs. CPAS is a fundamental contribution to education research since it provides a way for academic programs to be mapped out in a generalized ontology. Thus, it allows students to maximally utilize the academic resources of their university, and it allows faculty members and departments to plan and represent programs and to advise students effectively.
Systematic Design of Stacked-Crystal Filters by Microwave Network Methods

A class of novel frequency-selective devices, called stacked-crystal filters, is discussed in terms of a microwave network approach that leads to a systematic procedure for their analysis and design. These devices consist of two or more crystal plates that are stacked together, with thin electrodes being provided between some or all of the adjacent interfaces for the purpose of translating mechanical properties into electrical signals via piezoelectric coupling. In such a configuration, the electromechanical coupling that occurs at the plate surfaces produces selective interactions between the elastic modes in each crystal plate, as well as between these modes and all of the modes in the other plates included in a stack. A judicious combination of materials and dimensions can therefore provide a very wide range of desired filtering characteristics. For stacks with thin plates, only three thickness modes appear in each plate and they can be described in terms of three transmission lines; their coupling at the plate surfaces is then expressible in terms of ideal transformers that represent the mechanical junction between two adjacent plates. The interface electrodes appear as a set of terminals, to which are attached capacitators and another set of ideal transformers that represent the piezoelectric drive. In this manner, each plate can be rigorously described in terms of a well-defined network that serves as a building block. A stack consisting of any number of plates can therefore be regarded as the connection of an appropriate number of such building blocks, thus reducing a complicated mathematical problem to a systematic representation that can readily be handled by conventional techniques. A simple example of a two-layer quartz device operating on these principles is given. The simulated behavior obtained from the exact eqivalent network discloses that wide-band filters may be designed. Construction of such devices can be expected to yield robust, miniature filters of high performance possessing a large diversity of desired characteristics.
Social Media and Public Relations: The perception and adoption of Facebook by Malaysian Public Relations Consultancies as effective external communication tool,

The explosion in social media, especially social networking site such as Facebook with increased connectivity and interactivity has caused many public relations (PR) agencies begun to recognise the need to embrace these new media for effective communication with a variety of internal and external audiences. Yet, researches examining the relationship between social networking sites and public relations are limited especially in Malaysia context, thus this study aims to examine the use of Facebook and its implication by Malaysian PR consultants as a communication platform in the agency. The objectives are to: (1) determine the use of different types of social networking sites by PR consultants; (2) investigate the use of Facebook amongst PR consultants for external communication; (3) find out the advantages and disadvantages of using Facebook for external communication; as well as (4) gauge the perception and adoption of Facebook amongst PR consultants as effective external communication tool. A qualitative research method was adopted. Semi-structured interviews were conducted with Malaysian PR consultants in the Klang Valley, Malaysia, who are members of ‘Public Relations Consultants’ Association of Malaysia’ (PRCA Malaysia). The participation of the respondents was voluntary. The results reveal that Facebook becomes an increasingly important communication channel for external stakeholders. Facebook has been adopted as a formal channel of communication in PR agency, yet it could not replace traditional media such as faceto-face, email and corporate website because they still play a vital role for external communication.
Experimental Characterization of Channel Selection and Multi-Hops in Wireless Mesh Network

Wireless Mesh Network (WMN) is able to extend the coverage of the network infrastructure by multi-hop wireless connections between APs. However, full potentialities and limits of this new technology have still to be explored. In this paper, we design an experimental testbed to analyze the characterization of Channel Selection and Multi-hops in Wireless Mesh Network, we believe that the data collected by our experiments may be of interest to network designers who want to know the effective capabilities of a WMN before investing on its deployment.
Coupled Electromagnetic and Thermal-Fluid Analysis for a Permanent Magnet Synchronous Motor

This paper proposes a coupling analysis of the electromagnetic and thermal-fluid fields in an interior permanent magnet motor for electric vehicles. Both electrical and magnetic materials have temperature-dependent properties. The power loss produced by the electromagnetic analysis reheats the motor and its rise in temperature alters the material properties as well as motor performance. The temperature-dependent power loss is used as a heat source to create a lumped-circuit thermal model in terms of equivalent thermal resistances and thermal capacitances, in order to investigate the transient response of the motor. Simulation results confirmed that coupled electromagnetic and thermal-fluid analysis is able to predict the performance of a motor prior to its prototyping.
Identidad global de género: perfiles del alumnado de la Universidad de Las Palmas de Gran Canaria

La simbolizacion sociocultural del genero aúna creencias, valores y normas socialmente compartidas y construidas, que además de constituir modelos sociales de masculinidad y la feminidad en un contexto determinado, influyen potentemente en la estructuración de la identidad a nivel individual. En la actualidad, los modelos sociales de masculinidad y feminidad, así como los estereotipos que de ellos se desprenden, no responden a una construcción dicotómica -al menos, aparentemente-, dando lugar a múltiples identidades de género. La presente investigación analiza la identidad global de género en una muestra de 1091 estudiantes de la Universidad de Las Palmas de Gran Canaria. El objetivo es examinar los perfiles de identidad de género. En términos generales, los resultados muestran una prevalencia de identidades de género estereotipadas, con una alta correspondencia entre las categorías sexo-género autoinformadas. La diversificación de estereotipos de género más allá de su constitución tradicional parece ser más una cuestión simbólica que una manifestación subjetiva de las representaciones sociales compartidas. Este estudio destaca la necesidad de explorar uno de los principales componentes de las desigualdades de género a nivel individual, que sirvan de base para desarrollar intervenciones socioeducativas en materia de igualdad en la enseñanza superior.
Lettuce Stand Establishment with Improved Seed Pellets

ABSTRACT IN a comparison of seven new commercial lettuce seed pelleting materials Splitkote, Splitkote D, and Seedcoat showed significantly faster rates of emergence than others tested. For each day the emergence period is shortened in Imperial Valley, there are potential savings of $139,500 and a probability of more uniform sized heads at harvest.
A novel a‐shaped monopole‐like slot antenna for ultrawideband applications

A novel A‐shaped monopole‐like slot antenna is presented. The proposed antenna consists of a A‐shaped radiating patch in place of the conventional monopole patch antenna to achieve ultrawideband (UWB) frequency. The ground plane is also modified by cutting rectangular slots to resonate at lower band of UWB. The antenna is practically fabricated and simulated. Measured results shows a good agreement with simulated results. The prototype with an overall size of 25 × 25 × 1.6 mm3 achieves good impedance matching, almost constant gain, stable radiation patterns, and constant group delay over an entire operating bandwidth. The designed antenna offers a measured bandwidth of 9.6 GHz (2.9–11.5 GHz) which covers entire UWB band. The proposed antenna has a compact size, good radiation characteristics, ultrawide bandwidth, and good time‐domain behaviors to satisfy the requirement of the current wireless communication systems. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:1826–1829, 2014
Single Aerial Image De-Hazing and Its Parallel Computing

Aiming at the degraded image quality in bad weather, a novel haze removal method for single image based on dark channel prior is firstly introduced. Then these disadvantages of initialized method are analyzed and improved, a tolerance mechanism is introduced to deal with the dark channel prior ineffective zones, a fast edge-preserving interpolating algorithm of atmosphere transmission based on guided image filter is proposed to overcome time-consuming problem of soft matting algorithm, a Wallis filter is used to improve the intensity of result image. And to improve the de-hazing efficiency more, a GPU-CPU cooperating scheme is designed and corresponding fine granularity parallel computing of de-hazing is realized based on integral image and box filter through GPU. At last, three aerial images are processed using GeForce 9500 GT card to validate the proposed method.
Numerical simulation of wind loading on roadside noise mitigation structures

Numerical research on four typical configurations of noise mitigation structures and their characteristics of wind loads are reported in this paper. The turbulence model as well the model parameters, the modeling of the equilibrium atmospheric boundary layer, the mesh discretization etc., were carefully considered in the numerical model to improve the numerical accuracy. Also a numerical validation of one configuration with the wind tunnel test data was made. Through detailed analyses of the wind load characteristics with the inclined part and the wind incidence angle, it was found that the addition of an inclined part to a noise mitigation structure at-grade would affect the mean nett pressure coefficients on the vertical part, and that the extent of this effect depends on the length of the inclined part itself. The magnitudes of the mean nett pressure coefficients for both the vertical part and the inclined part of noise mitigation structure at-grade tended to increase with length of inclined part. Finally, a comparison with the wind load code British/European Standard BS EN 1991-1-4:2005 was made and the envelope of the mean nett pressure coefficients of the noise mitigation structures was given for design purposes. The current research should be helpful to improve current wind codes by providing more reasonable wind pressure coefficients for different configurations of noise mitigation structures.
Quality of collaboration in design: articulating multiple dimensions and viewpoints

The aim of this paper is to provide a research synthesis and a theoretical-methodological framework for the appraisal of the quality of collaboration in co-design situations. The paper presents a discussion of how good collaboration can be related to successful design, and discusses some existing approaches to evaluating the quality of collaboration. A broader perspective on collaboration and its qualities is then elaborated, in terms of nine propositions, comprising defining characteristics, specific processes, and theoretical-methodological standpoints with respect to collaboration processes. The concluding discussion aims to bring strands of research together with a view to outlining future research perspectives. It is argued that there is no privileged standpoint from which to evaluate the quality of collaboration: the qualities to which precedence will be given in this depend on the objects of co-design activities, what is at stake, and the viewpoints of social actors involved. Research approaches in this direction could take this into account by articulating alternative perspectives within a dialogical approach.
The Mediating Role of Management Accounting Information and Organizational Culture Between Organizational Learning and Performance

Research purpose This study focuses on the mediating role of management accounting information (MAI) and organizational culture in the relationship between organizational learning (OL) and organizational performance. Research motivation The relationship between OL and organizational performance has been the subject of discussion in management literature. However, certain studies have found a directly significant link between OL and organization performance, whereas others have not. In addition, MAI that is created from accounting information systems as well as organizational culture have important impacts on the enterprise performance. In an emerging economy like Vietnam, there are not that many empirical studies that focusing on OL, MAI, organizational culture, and organization performance. From the needs to improve the organization performance and the lack of research regarding the correlation of these factors, more empirical studies should be conducted in different contexts. Research design, approach, and method This is a quantitative research, using a survey approach. Designed based on theoretical foundations, a questionnaire was then self-applied to 170 enterprises. The data set was analysed to test the path model through PLS technique. Main findings The findings confirmed that MAI and organizational culture represents complementary mediations for the effects of OL on organization performance. Overall organizational performance was significantly influenced by MAI (β = 0.360), organizational culture (β = 0.346), and OL (β = 0.221). All three factors together can explain 73.3 percent of the variance in organizational performance. Practical/managerial implications Findings can be useful for managers and practitioners of enterprises, encouraging further studies on the OL, MAI and organizational culture’s role in assisting organization performance. The study has relevant implications for managers through the identification and analysis of the mediating role of MAI and organizational culture in the relationship between OL and performance.
A Collision-free Coordination Framework for Mixed-Vehicle Intersections

Proper coordination systems for autonomous vehicles (AVs) in complex road structures such as road intersections are of great importance. However, considering the fact that not only AVs but also human-driven vehicles (HVs) are involved at intersections, existing coordination strategies are limited in reliability and flexibility. In order to guarantee the vehicle safety in the mixed vehicle intersections, we propose a double-level coordination framework. In the centralized node, a high-level planner based on appropriate space-time resource allocation is used to provide feasible tunnels to AVs, to achieve high traffic throughput. Furthermore, on each AV, a low-level planner replans a collision-free practical trajectory to avoid HVs. Sensing, localization and control uncertainties are all considered in the framework to give a proper replanning interval in low-level planner, for improving the robustness of the system. Numerical results are provided and validate our analysis.
A novel defect detection technique using active transient thermography for high density package and interconnections

The conventional integrated circuit (IC) packaging failure analysis techniques such as visual inspection, CSAM, X-ray and cross-section are having bottlenecks in defect detection and isolation in a high density package such as flipchip interconnection in a multilayer buildup substrate. This paper describes a new method for defect detection and fault isolation using active transient thermography technique. This technique utilizes the principle of active joule beating by electrical current passing tbrough a potential defective interconnection in a daisy chained package, such as a partial solder joint crack with an increased electrical resistance. The thermal history of the defective solder joint is captured with the help of IR thermography operating in transient mode. By using this technique, we are able to detect the location of a solder joint with small increase in resistance compared to normal solder joint in the same package.
Unsupervised Machine Learning for Improved Delaunay Triangulation

Physical oceanography models rely heavily on grid discretization. It is known that unstructured grids perform well in dealing with boundary fitting problems in complex nearshore regions. However, it is time-consuming to find a set of unstructured grids in specific ocean areas, particularly in the case of land areas that are frequently changed by human construction. In this work, an attempt was made to use machine learning for the optimization of the unstructured triangular meshes formed with Delaunay triangulation in the global ocean field, so that the triangles in the triangular mesh were closer to equilateral triangles, the long, narrow triangles in the triangular mesh were reduced, and the mesh quality was improved. Specifically, we used Delaunay triangulation to generate the unstructured grid, and then developed a K-means clustering-based algorithm to optimize the unstructured grid. With the proposed method, unstructured meshes were generated and optimized for global oceans, small sea areas, and the South China Sea estuary to carry out data experiments. The results suggested that the proportion of triangles with a triangle shape factor greater than 0.7 amounted to 77.80%, 79.78%, and 79.78%, respectively, in the unstructured mesh. Meanwhile, the proportion of long, narrow triangles in the unstructured mesh was decreased to 8.99%, 3.46%, and 4.12%, respectively.
PMOS-switching dual-path charge pump in standard twin-well CMOS technology

In this article a new charge pump circuit is presented, which is feasible for implementation with the standard twin-well CMOS process. The proposed charge pump employs PMOS-switching dual charge-transfer paths and a simple two-phase clock. Since charge transfer switches are fully turned ON during each half of the clock cycle, they transfer charges completely from the present stage to the next stage without suffering threshold voltage drop. During one clock cycle, the pump transfers charges twice through two pumping paths which are operating alternately. Test chips have been fabricated in a 0.35-μm twin-well CMOS process. The output voltage of a 4-stage charge pump with each pumping capacitor of 7.36 pF measures 6.7 V under a 1.5 V power supply and 20 MHz clock frequency. It can supply a maximum load current of about 180 μA. Although the proposed circuit exhibits somewhat inferior performances against triple-well charge pumps using additional mask and process steps, it shows at least 60% higher voltage gain at V DD = 0.9 V, approximately 10% higher peak power efficiency at V DD = 1.5 V, much larger output current drivability and faster initial output rising than traditional twin-well charge pumps. This new pumping efficient circuit is suitable for design applications with a low-cost standard twin-well CMOS process.