Miracle-dz/UniFAR-FTUs huggingface dataset:
Sustained Engagement to Create Resilient Communities: How a Collaborative Design Approach Can Broker and Mobilise Practitioner-Participant Interaction.

When conducting research with young people, studies consistently cite the need to establish trust and rapport with participants. However, what frequently goes unreported is how to evolve these often highly fragile research relationships, and the subtle tensions and negotiations that can occur. In this article I reflect on my experience of collaborating with a group of young people, identified by their school teachers as vulnerable and at risk of falling through the educational net post compulsory schooling. Through a reflexive approach, this article explores how the use of a participatory filmmaking method enabled and sustained a research relationship between the participants and myself, outlining how trust and rapport gradually emerged. Drawing on relational ethics, I describe the catalysing and democratising role creativity played in gaining insights into group dynamics and the implicit strategies adopted by the young people in the search for social self‐empowerment.
Terahertz Generation in an Electrically Biased Optical Fiber: A Theoretical Investigation

We propose and theoretically investigate a novel approach for generating terahertz (THz) radiation in a standard single-mode fiber. The optical fiber is mediated by an electrostatic field, which induces an effective second-order nonlinear susceptibility via the Kerr effect. The THz generation is based on difference frequency generation (DFG). A dispersive fiber Bragg grating (FBG) is utilized to phase match the two interacting optical carriers. A ring resonator is utilized to boost the optical intensities in the biased optical fiber. A mathematical model is developed which is supported by a numerical analysis and simulations. It is shown that a wide spectrum of a tunable THz radiation can be generated, providing a proper design of the FBG and the optical carriers.
A NOVEL LOW-PROFILE QUADRIPOD KETTLE ANTENNA WITH ENHANCED BANDWIDTH

The design of a novel low proflle antenna is presented in this paper. By a cross-shaped structure shorted to the ground plane through shorting probes, the size reduction is achieved. A top-loading ring-disc is successfully employed to broaden the impedance bandwidth. Moreover, with the uniformly-arranged shorting pins and a circular sleeve structure placed on the ground, a good omnidirectional performance in the horizontal plane is obtained. An antenna prototype has been implemented and characterized. A measured impedance bandwidth for VSWR • 2 of about 135% ranging from 1500 to 7800MHz is achieved, and a monopole-like radiation pattern is also produced. The height of the proposed antenna is very low with 0:07‚ tall. The proposed antenna is very suitable for indoor base station and the UWB applications.
Non stationarity characteristics of the S\&P500 returns:An approach based on the evolutionary spectral density

In this paper we study the characteristics of the non stationarity of the covariance structure of the S\&P 500 returns by analyzing the time spectral density of the data. We show that the S\&P 500 returns has the same characteristics as the modulate white noise process. So, some precautions must be taken before applying traditional stationary models to describe like long size financial time series.
The impact of surface reflectance variability on total column differential absorption LiDAR measurements of atmospheric CO 2

Abstract. The remote sensing technique, total column differential absorption LiDAR (TC-DIAL) has been proposed in a number of feasibility studies as a suitable method for making total column measurements of atmospheric CO2 from space. Among the sources of error associated with TC-DIAL retrievals from space is an undefined modulation of the received signals resulting from the variability in the Earth's surface reflectance between the LiDAR pulses. This source of uncertainty is investigated from a satellite perspective by the application of a computer model for spaceborne TC-DIAL instruments. The simulations are carried out over Europe and South America using modified MODIS surface reflectance maps and a DIAL configuration similar to that suggested for the proposed ESA A-SCOPE mission. A positive bias of 0.01 ppmv in both continental test sets is observed using 10 Hz pulse repetition frequency and 200 km integration distance. This bias is a consequence of non-linearity in the DIAL equation, and in particular regions such as the Alps and over certain coastlines it contributes to positive errors of between 0.05 and 0.16 ppmv for 200 and 50 km integration distances. These retrieval errors are defined as lower bound estimates owing to the likely resolution difference between the surface reflectance data and the expected surface heterogeneity observed by a DIAL instrument.
Four Ages of Our Relationship with the Reality: An educationalist perspective

Abstract In this article, I try to make sense conventional notions of ‘premodernism’, ‘modernism’ and ‘postmodernism’ as ways of relating to reality, and apply them to education. I argue for the additional notion of ‘neo-premodernism’ to make sense of recent attempts to engineer social reality. Each of these four approaches coexists and constitutes the four ages: the age of prayer (premodernism), the age of reason (modernism), the age of social engineering (neo-premodernism) and the age of responsibility (postmodernism). I try to trace these ages in modern schooling and critically analyze their consequences and the power relations between teachers and students.
Effect of propionate on the production of natamycin with Streptomyces gilvosporeus XM-172

This study described the influence of feeding short-chain fatty acids and alcohols on natamycin production in the glucose basal medium, produced by Streptomyces gilvosporeus XM-172. The highest natamycin production was obtained with feeding propionate as compared to other precursors. The optimal propionate concentration and feeding time were 6 g L -1 and early log phase, respectively. This optimal propionate feeding strategy led to a natamycin production of 6.72 g L -1 , which was nearly 85% higher than that of the control. It was firstly revealed that propionate could greatly promote natamycin biosynthesis by S. gilvosporeus . Key words : Precursor, propionate, natamycin production, Streptomyces gilvosporeus XM-172.
The Advanced High-Temperature Reactor (AHTR) for Producing Hydrogen to Manufacture Liquid Fuels

Conventional world oil production is expected to peak within a decade. Shortfalls in production of liquid fuels (gasoline, diesel, and jet fuel) from conventional oil sources are expected to be offset by increased production of fuels from heavy oils and tar sands that are primarily located in the Western Hemisphere (Canada, Venezuela, the United States, and Mexico). Simultaneously, there is a renewed interest in liquid fuels from biomass, such as alcohol; but, biomass production requires fertilizer. Massive quantities of hydrogen (H2) are required (1) to convert heavy oils and tar sands to liquid fuels and (2) to produce fertilizer for production of biomass that can be converted to liquid fuels. If these liquid fuels are to be used while simultaneously minimizing greenhouse emissions, nonfossil methods for the production of H2 are required. Nuclear energy can be used to produce H2. The most efficient methods to produce H2 from nuclear energy involve thermochemical cycles in which high-temperature heat (700 to 850°C) and water are converted to H2 and oxygen. The peak nuclear reactor fuel and coolant temperatures must be significantly higher than the chemical process temperatures to transport heat from the reactor core to an intermediate heat transfer loop and from the intermediate heat transfer loop to the chemical plant. The reactor temperatures required for H2 production are at the limits of practical engineering materials. A new high-temperature reactor concept is being developed for H2 and electricity production: the Advanced High-Temperature Reactor (AHTR). The fuel is a graphite-matrix, coated-particle fuel, the same type that is used in modular high-temperature gas-cooled reactors (MHTGRs). The coolant is a clean molten fluoride salt with a boiling point near 1400°C. The use of a liquid coolant, rather than helium, reduces peak reactor fuel and coolant temperatures 100 to 200°C relative to those of a MHTGR. Liquids are better heat transfer fluids than gases and thus reduce three temperature losses in the system associated with (1) heat transfer from the fuel to the reactor coolant, (2) temperature rise across the reactor core, and (3) heat transfer across the heat exchangers between the reactor and H2 production plant. Lowering the peak reactor temperatures and thus reducing the high-temperature materials requirements may make the AHTR the enabling technology for low-cost nuclear hydrogen production.
Maximal mixing by incompressible fluid flows

We consider a model for mixing binary viscous fluids under an incompressible flow. We prove the impossibility of perfect mixing in finite time for flows with finite viscous dissipation. As measures of mixedness we consider a Monge–Kantorovich–Rubinstein transportation distance and, more classically, the H−1 norm. We derive rigorous a priori lower bounds on these mixing norms which show that mixing cannot proceed faster than exponentially in time. The rate of the exponential decay is uniform in the initial data.
RECONSTRUCTING TEACHER IDENTITY: EXPERİENCES OF A TURKISH TEACHER AIDE IN AN AMERİCAN PRESCHOOL CLASSROOM

Bu calismanin amaci bir Turk yardimci ogretmenin bir Amerikan sinifinda edindigi tecrubelerin onda yarattigi duygulari dusunceleri, ve ikilemleri inceleyerek mesleki kimliginde yasadigi degisikliklikleri ortaya koymaktir. Olay hakkinda derinlemesine bilgi edinilmesini saglamak icin betimsel vaka incelemesi metodu kullanilmistir. Calisma icin, amaca dayali orneklem yontemi kullanilarak bir Turk ogretmen yardimcisi secilmistir. Veriler yari yapilandirilmis gorusme teknigi ile toplanmistir. Ortaya cikan sonuclar yardimci ogretmenin ogretmenlik uygulamalarinin kollektif toplum gorusunden derinlemesine etkilendigini fakat bu uygulamalari ve kimligini Amerika’da elde ettigi kazanim ve deneyimlerle degistirdigini gostermistir.
Survey of Feature Points Detection and Matching using SURF, SIFT and PCA-SIFT

This paper summarizes the three robust feature detection and matching methods: Scale Invariant Feature Transform (SIFT), Principal Component Analysis (PCA)–SIFT and Speeded Up Robust Features (SURF). SIFT find its interest points using Difference of Gaussian (DoG). SIFT presents its stability in most situations although it’s slow. PCASIFT show its advantages in rotation and illumination change and it is faster than SIFT.SURF is the fastest one with good performance as the same as SIFT. ‘Fast-Hessian’ detector that used in SURF is more than 3 times faster that DOG.
Close correlation between global air temperature change and polar motion during 1962–2013

Polar motion is an important Earth orientation parameter, but our understanding of its relation to global climate change is highly uncertain. In this study, we examine the links between polar motion excitation and annual mean air temperature during the period of 1962–2013 and discuss the possible responsible mechanisms. The regions of positive correlation correspond well with the warming centers. Spectral analysis shows that they have strong signals at similar frequencies. Strong correlations are also found between the polar motion and surface air pressure and vertical integrated zonal wind. This implies that polar motion serves as an important indicator of global climate change, and thus, the feedbacks between the solid Earth and the climate system deserve careful considerations.
Computer simulation and analysis tool for air and space traffic interaction research

Driven by anticipated increase in satellite deployments and corresponding increase on space-launch demand, numerous domestic and international government programs as well as several "start-up" private ventures have been formed to develop launch vehicles that will provide less expensive alternatives to the current fleet, including numerous reusable launch vehicle concepts. The different launch-vehicle concepts are expected to have different operational characteristics, and thus different impact and requirements on the National Airspace System (NAS). This paper describes a set of computer analysis capabilities being developed for the study of air traffic management issues related to the space operations. NASA already has the Future ATM Concepts Evaluation Tool (FACET) for evaluation of advanced technologies on the air traffic over the continental U.S. The computer tool described in this paper builds on FACET to include the capability to model and analyze space-flight operations within the NAS. Specifically, it includes an extensible model database for inclusion of future launch and return vehicle models for simulation and analysis; modeling of new reserved airspace definitions; functionality for analyzing launch/return operations and potential debris fallout; and more powerful visualization capabilities. The computer tool will be instrumental for studying the interaction of air and space traffic with regard to such issues as air traffic control, spaceport operations, airspace environments, automation and decision-support tools, and communication, navigation, and surveillance.
Multimessengers from core-collapse supernovae: multidimensionality as a key to bridge theory and observation

Core-collapse supernovae are dramatic explosions marking the catastrophic end of massive stars. The only means to get direct information about the supernova engine is from observations of neutrinos emitted by the forming neutron star, and through gravitational waves which are produced when the hydrodynamic flow or the neutrino flux is not perfectly spherically symmetric. The multidimensionality of the supernova engine, which breaks the sphericity of the central core such as convection, rotation, magnetic fields, and hydrodynamic instabilities of the supernova shock, is attracting great attention as the most important ingredient to understand the long-veiled explosion mechanism. Based on our recent work, we summarize properties of gravitational waves, neutrinos, and explosive nucleosynthesis obtained in a series of our multidimensional hydrodynamic simulations and discuss how the mystery of the central engines can be unraveled by deciphering these multimessengers produced under the thick veils of massive stars.
Compact Coarse Approach Mechanism for a Scanning Probe Microscope

We report a compact design for a coarse approach mechanism, the so-called `walker', for a lowtemperature ultra-high-vacuum scanning probe microscope. We adapted the slip-stick principle with three actuators driven by the time sequential scheme suggested by Pan et al. The shear piezo-stack was replaced by three rectangular pieces of a piezoelectric (PZT) actuator to reduce the walker volume. Three slip-stick actuators were used rather than six actuators in the original design. By using polished sapphire and rough alumina plates, we implemented perfect sticking and a sliding interface. Our design minimizes usage of glue or epoxy, where attachment strength would be deteriorated by repeated temperature cycling. By using te on material, we reduced the frictional force of sliding parts. Without a metallic spring, elastic motion was provided by the te on material against the holding force. A moving velocity of 18 m/s and a step distance of 0.3 m were measured at room temperature.
A Bavarian Initiative Towards a Robust Galileo PRS Receiver

This paper presents the architecture, core technologies, system development, and setup of the BaSE Galileo PRS receiver. The receiver is capable of processing Galileo E1/E6 PRS signals with broad bandwidth. In particular, its hard- and software receiver components are presented and a robust tracking method of the BOCc-modulated PRS signals is discussed. Finally it is shown how an effective suppression of jamming and interference is achieved by combining different approaches like application of an adaptive, two frequency antenna array with a post-correlation beamforming, and a robust PVT solution with multi-frequency RAIM.
Cablegation: V. Dimensionless Design Relationships

ABSTRACT Asimplified design method using dimensionless relationships was developed for the cablegation automated surface irrigation system. The method consists of two parts: the pipe flow distribution and the infiltration-runoff distribution. The maximum outlet head, maximum stream size and number of flowing outlets are calculated using a set of dimensionless equations, given the pipe size, pipe slope, outlet size and spacing and total inflow rate. These equations enable a direct determination of the design variables without calculating the entire distribution of outlet flows. If the desired maximum stream size is known, the required outlet size can be calculated directly without trial and error. The infiltration-runoff analysis is presented as a series of dimensionless relationships in graphical form. These curves are used mainly for determining the required maximum stream size given a time-based furrow intake curve, furrow length and spacing, gross water application and percent runoff. Curves are also presented for the case of constant stream size for comparison with cablegation and for use in designing constant-inflow irrigation systems.
The relationship of authoritative parenting, school attendance, suspension, and academic success among adolescents

Charles Bender The Relationship of Authoritative Parenting, School Attendance, Suspensions and Academic Success Among Adolescents 2000 Dr. John Klanderman, Advisor Master of Arts in School Psychology The purpose of this study was to examine the perceived parenting style of adolescents and the educational implications. Grade Point Average, Absences, and Suspensions was explored. The level of perceived authoritativeness, as well as the "pure" parenting style was measured. Adolescents who viewed their parents as presenting a more firm and democratic parenting atmosphere demonstrated a lower rate of absenteeism and did better academically. The Child Report of Parental Behavior Inventory was administered to seventh and eighth grades in an urban school district. The sample size for this study was 320 (m=148, f=172). The study was comprised of 194 African Americans (60.6%), 64 European Americans (20.0%) and 62 Hispanic Americans (19.4%). A correlation and multivariate ANOVA was used in examining the data. The results suggest that perceived authoritative parenting style is associated with higher grade point average and lower absences and suspensions. The results also suggest that this association occurs more frequent by females than males. No ethnic differences have been found with regards to the level of perceived parenting style and the examined
Comprehending Implied Meaning in English as a Foreign Language

This study investigated whether second language (L2) proficiency affects pragmatic comprehension, namely the ability to comprehend implied meaning in spoken dialogues, in terms of accuracy and speed of comprehension. Participants included 46 native English speakers at a U.S. university and 160 Japanese students of English in a college in Japan who were at different L2 proficiency levels. They took a 38-item computerized listening task measuring their ability to comprehend conversational implicatures of different types (i.e., 2 sets of items in different degrees of conventionality). The participants' comprehension was analyzed in terms of accuracy (i.e., test scores on a multiple choice measure) and comprehension speed (i.e., average time in seconds taken to answer each item correctly). The results revealed a significant L2 proficiency influence on accuracy, but not on comprehension speed. There was no significant relationship between accuracy and comprehension speed. A post hoc analysis of error data revealed a short-term memory influence on comprehension accuracy for L2 learners.
Orthogonal Locality Fisher Discriminant Projections for face recognition

A subspace learning method, orthogonal locality Fisher discriminant projections (OLFDP), is proposed. The goal of OLFDP is to seek a projection transformation such that geometry information and discriminant information in high dimension space are still preserved in low dimension subspace after dimensionality reduction. OLFDP not only inherits the advantages of manifold learning which has property of preserving local geometry structure, but also makes full use of class label information. In order to improve the discriminating power, we use Schmidt orthogonalizing to orthogonalize the basis eigenvectors. On the base of OLFDP method, orthogonalized kernel locality Fisher discriminant projections method (OKLFDP) is proposed. OLFDP is extended to the nonlinear method by the set of OKLFDP’s vectors. Experiment results on the BAC2005 face image database demonstrates the effectiveness of the proposed method.
Lead Time for Cities of Northern India by Using Multiparameter EEW Algorithm

Earthquake early warning (EEW) is considered one of the important real-time earthquake damage mitigation measures. The presence of seismogenic sources generating high seismicity in Himalayas and the cities of concern lying at appropriate distances makes Northern India a perfect case to be monitored using EEW systems. In the present study, an attempt has been made to estimate the lead times for Northern Indian cities for issuing early warning by using the EEW system deployed by IIT Roorkee in Central Himalayas. The instrumentation deployed at 100 locations between Uttarkashi and Chamoli has been used to estimate the lead time at six cities. The estimated lead time includes the time to reach S-wave after subtraction of the sum of P-wave arrival time at the station, time taken by EEW algorithm, transmission and processing delay. The study reveals that for Dehradun, Hardwar, Roorkee, Muzaffarnagar, Meerut, and Delhi the minimum calculated lead time is 5, 11, 20, 35, and 68 sec while the maximum lead time is 37, 36, 47, 59, and 90 sec, respectively. Such larger estimated lead times to these densely populated cities show that EEW can successfully work as one of the important real-time earthquake disaster reduction measures in Northern India.
Audit fee stickiness

Purpose - – This study aims to contribute to the understanding of audit pricing and the competitiveness of the audit fee market by examining audit fee stickiness. Design/methodology/approach - – The authors explore the price behavior of audit fees in response to changes in the variables that are usually seen as their determinants, such as size, complexity, and risk in order to examine audit fee stickiness and the competitiveness of the market for audit services. Findings - – The authors find that audit fees are sticky, i.e. audit fees do not immediately or fully adjust to changes in their determinants. Audit fees also respond to changes leading to an increase more quickly than they respond to changes leading to a decrease. The difference between positive and negative fee adjustments declines over periods longer than one year and is no longer significant when four-year periods are considered. Research limitations/implications - – The study is limited to companies in the USA from 2000 to 2008. Future research should examine this issue in other settings and periods. Practical implications - – The results suggest that the audit market is competitive, at least in the medium term. Originality/value - – The study helps to explain why the audit fee model does not fully explain the level of audit fees; why audit fees are more likely to be too high than too low; and why auditor switches are commonly associated with larger changes in audit fees. The findings provide evidence that may be useful to managers and audit committees when managing their audit fees, auditors when considering the risks and opportunities associated with changes in the determinants of audit fees, and regulators concerned with the competitiveness of the audit market.