Miracle-dz/UniFAR-FTUs huggingface dataset:
Surveys in Combinatorics 2011

Preface 1. Counting planar maps, coloured or uncoloured Mireille Bousquet-Melou 2. A survey of PPAD-completeness for computing Nash equilibria Paul W. Goldberg 3. Hypergraph Turan problems Peter Keevash 4. Some new results in extremal graph theory V. Nikiforov 5. The cyclic sieving phenomenon: a survey Bruce Sagan 6. Order in building theory Koen Thas 7. Graphs, colours, weights and hereditary properties Andrew Thomason 8. Random geometric graphs Mark Walters 9. Transversals in Latin squares: a survey Ian Wanless.
Some Observations on the Random Response of Hysteretic Systems

In this thesis, the nature of hysteretic response behavior of structures subjected to strong seismic excitation, is examined. The earthquake ground motion is modeled as a stochastic process and the dependence of the response on system and excitation parameters, is examined. Consideration is given to the drift of structural systems and its dependence on the low frequency content of the earthquake spectrum. It is shown that commonly used stochastic excitation models, are not able to accurately represent the low frequency content of the excitation. For this reason, a stochastic model obtained by filtering a modulated white noise signal through a second order linear filter is used in this thesis. A new approach is followed in the analysis of the elasto-plastic system. The problem is formulated in terms of the drift, defined as the sum of yield increments associated with inelastic response. The solution scheme is based on the properties of discrete Markov process models of the yield increment process, while the yield increment statistics are expressed in terms of the probability density of the velocity and elastic component of the displacent response. Using this approach, an approximate exponential and Rayleigh distribution for the yield increment and yield duration, respectively, are established. It is suggested that, for duration of stationary seismic excitation of practical significance, the drift can be considered as Brownian motion. Based on this observation, the approximate Gaussian distribution and the linearly divergent mean square value of the process, as well as an expression for the probability distribution of the peak drift response, are obtained. The validation of these properties is done by means of a Monte Carlo simulation study of the random response of an elastoplastic system. Based on this analysis, the first order probability density and first passage probabilities for the drift are calculated from the probability density of the velocity and elastic component of the response, approximately obtained by generalized equivalent linearization. It is shown that the drift response statistics are strongly dependent on the normalized characteristic frequency and strength of the excitation, while a weaker dependence on the bandwidth of excitation is noted.
Primary Aberrations and Conjugate Change

Expressions are derived, in terms of the functions normally used in optical designing, for the variation with conjugates of the primary aberrations of any symmetrical system with isotropic object and image spaces. The possibilities of invariance of the aberrations, or their simultaneous correction for more than one magnification, are discussed
Magnetoelectric symmetry and the landau theory of phase transitions

Abstract The chronology of the understanding and discovery of the magnetoelectric effect is recalled. The specific features of the Landau Dzialoshinskii approach to magnetic phase transitions are stressed, and the approach is used to describe the magnetoelectric effect in two examples of magnetoelectric crystals, Cr2O3 and Ni3B7O13I. It is shown that in these two compounds, the magnetoelectric effect is taken into account by a trilinear invariant of the form LMP, which has respectively a relativistic and exchange origin. A magnetoelectric effect is predicted in two dimensional superconducting phases for which the transition mechanism is induced by a d or p pairing of the electrons.
ON THE GEOMETRY OF MEROMORPHIC FUNCTIONS

This paper establishes various propositions characterizing the geometric behavior of meromorphic functions in . Distortion theorems for these functions form a basis for the arguments. Namely, a finite number of nice curves , , in the -plane are considered (in particular, may be a straight line) and information is obtained about the lengths of the sets , . Qualitatively, the main result is as follows: on some sequence where is an absolute constant, and is the Ahlfors characteristic.Bibliography: 29 titles.
A Construction of C1-Wavelets on the Two-Dimensional Sphere☆

Abstract In this paper a construction of C1-wavelets on the two-dimensional sphere is presented. First, we focus on the construction of a multiresolution analysis leading to C1-functions on S2. We show refinability of the constructed tensor product generators. Second, for the wavelet construction we employ a factorization of the refinement matrices which leads to refinement matrices characterizing complement spaces. With this method we achieve an initial stable completion. A desired stable completion can be gained by lifting the initial stable completion. The result is a biorthogonal wavelet basis leading to C1-functions on the sphere.
Linear rank tests for the nonresponders problem with censored data

SUMMARY In a two-sample setting, a two-parameter mixture model is postulated for the treated patients where a proportion of the patients improve and the remaining proportion of nonresponders behave like the control patients. The response is subject to random censoring. Censored data versions of linear rank statistics are developed in order to detect improvement due to treatment. The tests are compared to standard tests such as the logrank test in terms of asymptotic relative efficiency, empirical power, and performance on real data.
Analysis of Damage Creation in Ion-Bombarded Amorphous Hydrocarbon Materials in Molecular Dynamics Simulations

Abstract Molecular dynamics simulations of energetic bombardment of amorphous hydrocarbon (a-C:H) materials by Ar ions up to 200 eV in energy have been performed. In addition to erosion of carbon and hydrogen atoms, the Ar bombardment causes damage and subsequent structural changes in the sample. We present a model based on potential energy analysis to characterize the damage and structural changes. The model identifies both the newly created damage due to bombardment and the local restructuring and subsequent annihilation of already existing damage. The analysis shows that although a large number of carbon atoms are displaced during the collision cascade, most of them do not contribute to the local structural change. Most of the damage creation and restructuring of the local neighborhood happens within the ion range, and, at high energy (200 eV), the restructuring continues beyond the ion range.
The Rediscovery of Bifactor Measurement Models

Bifactor latent structures were introduced over 70 years ago, but only recently has bifactor modeling been rediscovered as an effective approach to modeling construct-relevant multidimensionality in a set of ordered categorical item responses. I begin by describing the Schmid-Leiman bifactor procedure (Schmid & Leiman, 1957) and highlight its relations with correlated-factors and second-order exploratory factor models. After describing limitations of the Schmid-Leiman, 2 newer methods of exploratory bifactor modeling are considered, namely, analytic bifactor (Jennrich & Bentler, 2011) and target bifactor rotations (Reise, Moore, & Maydeu-Olivares, 2011). Then I discuss limited- and full-information estimation approaches to confirmatory bifactor models that have emerged from the item response theory and factor analysis traditions, respectively. Comparison of the confirmatory bifactor model to alternative nested confirmatory models and establishing parameter invariance for the general factor also are discussed. Finally, important applications of bifactor models are reviewed. These applications demonstrate that bifactor modeling potentially provides a solid foundation for conceptualizing psychological constructs, constructing measures, and evaluating a measure's psychometric properties. However, some applications of the bifactor model may be limited due to its restrictive assumptions.
Fast Coherence Scanning Interferometry for Measuring Smooth, Rough and Spherical Surfaces

Abstract Coherence scanning interferometry is a useful instrument for measuring the geometry of a wide range of surfaces with high resolution. By introducing two objectives with a high numerical aperture in both arms of a Michelson interferometer it is possible to investigate spherical and aspherical surfaces. In addition to classical interferometry, the method can be applied to smooth, rough or separated surfaces.
Fabrication of 1-3 piezo-composites using new micro PZT fibers

This paper presents a novel fabrication method of PZT micro-fibers using activated carbon template with the aim of manufacturing PZT/epoxy 1-3 composites. Porous carbon was first prepared by chemical activation technology. The pore diameter formed in an activated carbon template is of several microns and lengths are up to several millimeters. These pores provide a basic platform to grow PZT fibers inside. Then the carbon template is removed at high calcination temperatures to form PZT micro-fibers. Subsequently, thermo-gravimetric analysis (TG) and differential scanning calorimetry (DSC) were performed to analyze the process of removing the template as temperature changing. For manufacturing 1-3 piezo-composites, the PZT fibers were carefully aligned in one direction and infiltrated by epoxy resin. Based on the observation from X-ray diffraction (XRD) the fibers show a pure pervoskite phase at low sintering temperature of 950°C. The fibers embedded orderly in the epoxy matrix are smoothly distributed and straightened which were observed using a scanning electron microscopy (SEM). The diameter of fibers is around several microns with the length up to a few millimeters, matching well with pores in the template. The new micro-fiber composite material can be potentially used in a sensor with high directivity in structural health monitoring.
Closed-Form Hydrogenic Radial r k Matrix Elements and the Factorization Method

It is shown that the factorization method, when introducing accelerated ladder operators or accelerated ladder matrices, leads to a formula in closed form for the general off-diagonal ($n\ensuremath{\ne}{n}^{\ensuremath{'}}$) hydrogenic ${r}^{k}$ matrix elements. This explicit expression, which involves only factorials and binomial coefficients, is directly reducible to any particular case. The well-known selection rules follow from the formula. The method seems appropriate to other cases of factorizable equations. Its extension to the Dirac-Coulomb, generalized Kepler problems, and the discrete-continuous case is considered.
Detecting overlapping communities in massive networks

Community detection is an essential work for network analysis. However, few methods could be used as off-the-shelf tools to detect communities in real-world networks for two main reasons: Real networks often contain millions of nodes or even hundreds of millions of nodes while most methods cannot handle networks at this scale. One node often belongs to multiple communities, posing another big challenge. In this paper, we circumvent the tricky problem of detecting overlapping communities using a two-stage framework, balancing efficiency and accuracy. Given a network, we first focus on efficiently finding its coarse-grained communities. Starting from them, we next obtain overlapping communities by optimizing a principled objective function. In this divide-and-conquer way, the framework achieves a much better performance than detecting overlapping communities from scratch. Extensive tests on synthetic and real networks demonstrate that it outperforms state-of-the-art methods in terms of both efficiency and accuracy.
Quasi-one-dimensional steady-state cavitating nozzle flows

Quasi-one-dimensional cavitating nozzle flows are considered by employing a homogeneous bubbly liquid flow model. The nonlinear dynamics of cavitating bubbles is described by a modified Rayleigh–Plesset equation that takes into account bubble/bubble interactions by a local homogeneous mean-field theory and the various damping mechanisms by a damping coefficient, lumping them together in the form of viscous dissipation. The resulting system of quasi-one-dimensional cavitating nozzle flow equations is then uncoupled leading to a nonlinear third-order ordinary differential equation for the flow speed. This equation is then cast into a nonlinear dynamical system of scaled variables which describe deviations of the flow field from its corresponding incompressible single-phase value. The solution of the initial-value problem of this dynamical system can be carried out very accurately, leading to an exact description of the hydrodynamic field for the model considered. A bubbly liquid composed of water vapour–air bubbles in water at 20 °C for two different area variations is considered, and the initial cavitation number is chosen in such a way that cavitation can occur in the nozzle. Results obtained, when bubble/bubble interactions are neglected, show solutions with flow instabilities, similar to the flashing flow solutions found recently by Wang and Brennen. Stable steady-state cavitating nozzle flow solutions, either with continuous growth of bubbles or with growth followed by collapse of bubbles, were obtained when bubble/bubble interactions were considered together with various damping mechanisms.
Inequality of Middle Education Resources in Lampung Province

The government continues to make various efforts to improve the quality of education in Lampung Province, including its infrastructure, increasing competence and teacher welfare. Departing from this background, it is important to analyze the inequality in the distribution of educational capacity between regions in Lampung Province, in this research focused on the level of secondary education. This research was conducted using a mixed method method that combines qualitative and quantitative techniques with a qualitative paradigm. The quantitative data to be used include educational statistics from BPS, Dapodik and Education Balance, while the qualitative data to be used include interviews, observations and text analysis. The existence of private schools is dominant in Central Lampung, East Lampung, South Lampung and Bandar Lampung. This indicates if the area has an attractiveness for private schools to be involved in the provision of education. In addition, the social role of several private schools affiliated with community social organizations also reflects the efforts to be actively involved in the development of education in their area. Then, the availability of several types of space in schools in each district/city seems to vary.
Evaluating Results Using Corrected and Uncorrected Effect Size Estimates

AbstractMagnitude-of-effect (ME) statistics, when adequately understood and correctly used, are important aids for researchers who do not want to place a sole reliance on tests of statistical significance in substantive result interpretation. We describe why methodologists encourage the use of ME indices as interpretation aids and discuss different types of ME estimates. We discuss correction formulas developed to attenuate statistical bias in ME estimates and illustrate the effect these formulas have on different sample and effect sizes. Finally, we discuss several cautions against the indiscriminate use of these statistics and offer reasons why ME statistics, like all substantive result interpretation aids, are useful only when their strengths and limitations are understood by researchers.
RE-EVALUATION OF FOREIGN WORKERS' PLACEMENT AND REPATRIATION FACTORS

Malaysia has witnessed an influx of foreign workers (FWs), mainly due to its rapidly expanding economy. However, Malaysian labour migration policies have remained a short-term solution to fill instant labour shortages since they were introduced. The current policy has weaknesses due to not successfully controlling FWs at all phases, including the placement and repatriation stages. The focus of policies on public safety-rather than on labour administration and long-term sustainable development-has left room for abuse of and restrictions on FWs by employers and agents. This study aimed to identify crucial factors related to FWs’ placement and repatriation phases, and focused on SDG 08 due to the connection between detected factors and sustainability via decent work. It adopted a sequential exploratory mixed methods design, characterised by qualitative (in-depth interviews) and quantitative (face-to-face survey) data collection and analysis, respectively. The results highlighted the need to re-evaluate certain placement and repatriation factors for faultless placement and impeccable return of FWs. The findings of this study will help in redesigning FWs’ placement and repatriation policies. Moreover, the results will also assist in reducing illegal/irregular FWs as well as mistreating of FWs inside Malaysia, and ensuring FWs’ contribution to Malaysian society and the economy.
Heuristic closures for numerical simulations of neoclassical tearing modes

Heuristic closures are presented for use in simulations of neoclassical modifications to magnetohydrodynamic phenomenon in tokamaks. The closures capture the dominant physics expected from linear and quasilinear neoclassical instability theory and are computationally easy to implement. Numerical results from the NIMROD [A. H. Glasser, C. R. Sovinec, R. A. Nebel et al., Plasma Phys. Controlled Fusion 41, A747 (1999)] code are shown which demonstrate poloidal flow damping, growth rate reduction due to the neoclassical enhancement of the polarization current, and generation of perturbed bootstrap currents and subsequent generation of a neoclassical tearing mode.
Do Young Employees Satisfy Their Job Under Work Stress and Work-Family Conflict? Evidence from Resorts in Macau

Young employees currently face vast work stress in their careers triggering conflict between work and family. This paper target to examine how work-family conflict affects job satisfaction and turnover intentions through work stress for younger employees. 450 questionnaires were collected from young dealers who work at six casinos in Macau. The findings show that work-family conflict (WFC) and family-work conflict (FWC) positively affect work stress and turnover intention, but do not directly influence job satisfaction. Work stress negatively affected job satisfaction and positively affected turnover intention, fully negatively mediated WFC and FWC towards job satisfaction, and part positive mediated WFC and FWC towards turnover intention. Work stress can directly influence turnover intention, and job satisfaction partially mediated work stress toward turnover intention. Finally, WFC and FWC will affect turnover intention through work stress on job satisfaction. We also proposed suggestions to improve job satisfaction for young dealers in casino management.
Laser Deposition of Polymer Micro- and Nanoassembly from Solution Using Focused Near-Infrared Laser Beam

We have demonstrated the laser deposition of polymer micro- and nanoassemblies from a solution onto a glass substrate. The size and shape of the deposited dot-like assembly can be controlled by the laser power (P) and the concentration of the solution (C). For an example, a nanoassembly of a π-conjugated polymer, whose width and height are 280 and 23 nm, respectively, is deposited at the conditions of C=1.0×10-5 mg/ml and P=700 mW. This laser deposition can be attributed to the optical trapping and the surface deformation of the solution layer using a focused laser beam. It is also demonstrated that the molecular orientation in the assembly can be aligned in the direction of the laser polarization. The present laser deposition is applicable to the micropatterning of various polymers dissolved in an organic solvent.
Combining Deep Fully Convolutional Network and Graph Convolutional Neural Network for the Extraction of Buildings from Aerial Images

Deep learning technology, such as fully convolutional networks (FCNs), have shown competitive performance in the automatic extraction of buildings from high-resolution aerial images (HRAIs). However, there are problems of over-segmentation and internal cavity in traditional FCNs used for building extraction. To address these issues, this paper proposes a new building graph convolutional network (BGC-Net), which optimizes the segmentation results by introducing the graph convolutional network (GCN). The core of BGC-Net includes two major modules. One is an atrous attention pyramid (AAP) module, obtained by fusing the attention mechanism and atrous convolution, which improves the performance of the model in extracting multi-scale buildings through multi-scale feature fusion; the other is a dual graph convolutional (DGN) module, the build of which is based on GCN, which improves the segmentation accuracy of object edges by adding long-range contextual information. The performance of BGC-Net is tested on two high spatial resolution datasets (Wuhan University building dataset and a Chinese typical city building dataset) and compared with several state-of-the-art networks. Experimental results demonstrate that the proposed method outperforms several state-of-the-art approaches (FCN8s, DANet, SegNet, U-Net, ARC-Net, BAR-Net) in both visual interpretation and quantitative evaluations. The BGC-Net proposed in this paper has better results when extracting the completeness of buildings, including boundary segmentation accuracy, and shows great potential in high-precision remote sensing mapping applications.
Analisis Hasil Pengujian California Bearing Ratio Penambahan Slag Nikel Pada Tanah Lempung

Perbaikan tanah pada tanah lempung perlu dilakukan karena tanah lempung memiliki kandungan air yang besar, angka pori yang besar, plastisitas indeks yang besar, berat volume yang kecil sehingga menyebabkan daya dukung tanah lempung menjadi rendah. Metodologi dalam riset dengan penambahan slag nikel ini ialah melaksanakan berbagai pengujian karakteristik tanah setelah itu merencanakan komposisi campuran, memperoleh nilai kadar air optimum dari pengujian Kompaksi memperoleh nilai daya dukung tanah dari pengujian California Bearing Ratio (Unsoaked Design CBR). Hasil yang didapatkan menunjukkan karakteristik dari tanah yang diuji memenuhi sebagai tanah lempung. Pada pengujian kompaksi di titik 1 serta titik 2 menggunakan campuran variasi 0%, 20%, 25%, 30%, 35% mengalami peningkatan pada kadar air optimum serta kepadatan kering maksimum. Di titik 1 mengalami kenaikan kepadatan kering pada pengujian kadar slag nikel dari 0% sebanyak 1,098 terus mengalami kenaikan pada penambahan slag nikel hingga 30% sebanyak 1,123 terus meningkat pada penambahn kadar slag nikel hingga 35% sebanyak 1,214. Pada uji CBR yaitu CBR tanpa perendaman terjadi kenaikan nilai CBR di titik 1 ataupun di titik 2 yang mana nilai CBR pada titik 1 yaitu 1,97%, 2,63%, 3,80%, 5,70%, 6,33% sedangkan nilai CBR pada titik 2 yaitu 2,24%, 2,60%, 3,23%, 3,97%, 5,17%. Dari hasil penelitian dapat disimpulkan bahwa slag nikel bisa digunakan meningkatkan daya dukung tanah lempung karena slag nikel dapat meningkatkan nilai CBR tanah.