Miracle-dz/UniFAR-FTUs huggingface dataset:
On infinitesimal deformations of the regular part of a complex cone singularity

This article follows recent work of Miyajima on the complex-analytic approach to deformations of the regular part (i.e. the punctured smooth neighbourhood) of isolated singularities. Attention has previously focused on stably-embeddable infinitesimal deformations as those which correspond to standard algebraic deformations of the germ of a variety, and which also lead to convergent series solutions of the Kodaira-Spencer integrability equation. The emphasis of the present paper, however, is on the subspaces Z(0) of first cohomology classes containing infinitesimal deformations with vanishing Kodaira- Spencer bracket, and W(0), consisting more broadly of deformations for which the bracket represents the trivial second cohomology class. Deformations representing classes in Z(0) are automatically integrable, regardless of their analytic behaviour near the singular point. Classes in W(0) are those for which only the first formal obstruction to integrability is overcome. After some preliminary results on cohomology, the main theorem of this paper gives a partial description of the analytic geometry of Z(0) and W(0) for affine cones of arbitrary
Bilinear Optimal Control of the Velocity Term in a Kirchhoff Plate Equation

Abstract We consider a bilinear optimal control problem where the state equation is a Kirchhoff plate equation. The control acts as a multiplier of the velocity term. We prove the existence of an optimal control in a class h ∈ UM = {h ∈ L∞(0, T); −M ≤ h(t) ≤ M} and uniqueness of this optimal control for T sufficiently small.
Different Photosynthetic Response to High Light in Four Triticeae Crops

Photosynthetic capacity is usually affected by light intensity in the field. In this study, photosynthetic characteristics of four different Triticeae crops (wheat, triticale, barley, and highland barley) were investigated based on chlorophyll fluorescence and the level of photosynthetic proteins under high light. Compared with wheat, three cereals (triticale, barley, and highland barley) presented higher photochemical efficiency and heat dissipation under normal light and high light for 3 h, especially highland barley. In contrast, lower photoinhibition was observed in barley and highland barley relative to wheat and triticale. In addition, barley and highland barley showed a lower decline in D1 and higher increase in Lhcb6 than wheat and triticale under high light. Furthermore, compared with the control, the results obtained from PSII protein phosphorylation showed that the phosphorylation level of PSII reaction center proteins (D1 and D2) was higher in barley and highland barley than that of wheat and triticale. Therefore, we speculated that highland barley can effectively alleviate photodamages to photosynthetic apparatus by high photoprotective dissipation, strong phosphorylation of PSII reaction center proteins, and rapid PSII repair cycle under high light.
Complete caps in AG(3, q) from elliptic curves

In a three-dimensional Galois space of odd order q, the known infinite families of complete caps have size far from the theoretical lower bounds. In this paper, we investigate some caps defined from elliptic curves. In particular, we show that for each q between 100 and 350 they can be extended to complete caps, which turn out to be the smallest complete caps known in the literature.
LIonomers-New Generation of Ionomer: Understanding of Their Interaction and Structuration as a Function of the Tunability of Cation and Anion

In this work, by combining maleic anhydride-grafted polypropylene (PPgMA) and three different ionic liquids (ILs), i.e., tributyl (ethyl) phosphonium diethyl phosphate (denoted P+DEP), 1-ethyl-3-methylimidazolium diethyl phosphate (denoted EMIM DEP), and 1-ethyl-3-methylimidazolium acetate (denoted EMIM Ac), new ionic PP/IL polymer materials are generated and denoted as LIonomers. The structuration of ILs in LIonomers occurs from a nano/microphase separation process proved by TEM. NMR analyses reveal the existence of ionic–ionic and ionic–dipolar interactions between PPgMA and ILs within LIonomers. The rheological behavior of such IL/polymer combinations interpret the existence of interactions between maleic anhydride group and cation or anion composing the ionic liquid. These interactions can be tuned by the nature of cation (P+DEP vs. EMIM DEP) and anion (EMIM DEP vs. EMIM Ac) but also depend on the IL content. Thermal analyses demonstrate that IL could affect the crystallization process according to different pathways. Thanks to the maleic anhydride/IL interactions, an excellent compromise between stiffness and stretchability is obtained paving the way for processing new polyolefin-based materials.
Joint layout, pipe size and hydraulic reliability optimization of water distribution systems

A multicriteria maximum-entropy approach to the joint layout, pipe size and reliability optimization of water distribution systems is presented. The capital cost of the system is taken as the principal criterion, and so the trade-offs between cost, entropy, reliability and redundancy are examined sequentially in a large population of optimal solutions. The novelty of the method stems from the use of the maximum-entropy value as a preliminary filter, which screens out a large proportion of the candidate layouts at an early stage of the process before the designs and their reliability values are actually obtained. This technique, which is based on the notion that the entropy is potentially a robust hydraulic reliability measure, contributes greatly to the efficiency of the proposed method. The use of head-dependent modelling for simulating pipe failure conditions in the reliability calculations also complements the method in locating the Pareto-optimal front. The computational efficiency, robustness, accuracy and other advantages of the proposed method are demonstrated by application to a sample network.
CrN-based wear resistant hard coatings for machining and forming tools

Highly wear resistant multicomponent or multilayer hard coatings, based on CrN but incorporating other metals, have been developed using closed field unbalanced magnetron sputter ion plating technology. They are exploited in coated machining and forming tools cutting and forming of a wide range of materials in various application environments. These coatings are characterized by desirable properties including good adhesion, high hardness, high toughness, high wear resistance, high thermal stability and high machining capability for steel. The coatings appear to show almost universal working characteristics under operating conditions of low and high temperature, low and high machining speed, machining of ordinary materials and difficult to machine materials, and machining under lubricated and under minimum lubricant quantity or even dry conditions. These coatings can be used for cutting and for forming tools, for conventional (macro-) machining tools as well as for micromachining tools, either as a single coating or in combination with an advanced, self-lubricating topcoat.
Advances in the Role of Sodium Hypochlorite Irrigant in Chemical Preparation of Root Canal Treatment

Irrigation of root canal system is of great significance to the success of endodontic treatment, where sodium hypochlorite (NaOCl) is the most widely used irrigant in chemical preparation. NaOCl functions by eliminating bacterial biofilms and dissolving organic tissue, which may vary according to several factors such as the microbiology of root canal infection and the concentration of the irrigant. It has been proposed that the effectiveness of NaOCl could be enhanced via several methods, including heating the irrigant, applying in conjunction with certain reagents, or activating by agitation techniques. Despite its antibacterial and tissue-dissolving capacities, NaOCl should be used with caution to avoid detrimental effect due to its cytotoxicity and negative effect on dentin properties. In this narrative review, we discussed the factors that affect the properties of NaOCl, the methods to improve its efficacy, and the side effects that might occur in clinical practice.
Imaging in high-aperture optical systems

Nonparaxial effects on optical imaging are considered. It is shown that the dominant effect is on the axial variation in the complex amplitude, affecting most strongly depth of focus, interference microscopy, and the imaging of objects with appreciable depth. A so-called pseudoparaxial approximation is introduced, which gives reasonable prediction of these effects up to quite large angular apertures.
On the mean growth of the solutions of complex linear differential equations in the disk

Let w be a solution of the differential equation w(z)+q(z)w(z)=0 where q is analytic in the unit disk. We study first the mean square growth of w and give a condition for w to belong to the Hardy space H2 : the proof is based on Carleson measures Then it is shown that implies that w is of bounded characteristic: the proof uses ideas of Hille together with the Hardy Littlewood maximal theorem. This result is finally applied to the case that q is a Г-automorphic form of weight 2 for some Fuchsian group Г this case arises if we consider our differential equation in a multiply connected domain and then use uniformization.
Review of Voltage-Bucking/Boosting Techniques, Topologies, and Applications

As non-isolated step-up and step-down DC–DC converters are at present widely used in various fields, this review will summarize and introduce non-isolated step-up and step-down DC–DC converters in various aspects. First of all, the origin and development of power electronics technology and the generation and principle of certain basic non-isolated step-up and step-down DC–DC converters are briefly stated. Subsequently, according to their different characteristics, including whether they are unidirectional or bidirectional, voltage-fed or current-fed, or hard-switching or soft-switching, the review will classify them and analyze their advantages and disadvantages. Meanwhile, in order to change the voltage gains of the DC–DC converters, different voltage change techniques are applied to them. The review will elaborate on the four technologies (switched capacitors, voltage multipliers, switched inductors and different ways of connecting), providing examples and analyzing the topologies in which they are applied, before summarizing the advantages and disadvantages of these techniques. Finally, this review will describe the specific applications of non-isolated step-up and step-down DC–DC converters and the reasons behind their ubiquity and popularity. Although the performances of current DC–DC converter topologies are good, there continues to be increasing demand, an updating of the topology structure, and improvements in terms of their performance. In the future, DC–DC converters will play a more important role in industrial production and people’s lives.
STUDENTS' SAVING BEHAVIOUR: WHAT ARE THE MOTIVES THAT INFLUENCE THEM TO SAVE?

This study aims to determine the determinants of saving behavior using financial literacy as a mediating variable. The endogenous variable in this study was saving behavior, while the exogenous variables were financial literacy, parental socialization, peer influence, and self-control. The respondents were 300 students from the Faculty of Economics of Indonesia. Data were analyzed by Structural Equation Modelling (SEM) using STATA software. The results show that parental socialization and peer influence positively affect financial literacy, whereas self-control does not. Financial literacy directly affects saving behavior. Parental socialization and peer influence directly influence saving behavior. The results provide a new understanding of the importance of financial literacy in encouraging student-saving behavior. The role of parents and peers in the environment is essential for improving students’ financial literacy and saving behavior. The banking industry can play a role in increasing financial literacy through collaboration with universities through a virtual account program and the socialization of savings to students. It is also an opportunity for saving service providers to introduce their products to consumers early.JEL : G41, G410.ABSTRAKTujuan penelitian ini untuk mengetahui determinan dari saving behaviour dengan menggunakan financial literacy sebagai variabel mediasi. Variabel endogen dalam penelitian ini adalah saving behaviour sedangkan variabel eksogen, yaitu financial literacy, parental socialization, peer influence, dan self-control. Responden penelitian ini adalah 300 mahasiswa Fakultas Ekonomi di Indonesia. Data dianalisis dengan Structural Equation Modeling (SEM) menggunakan software STATA. Hasil penelitian menunjukkan bahwa parental socialization dan peer influence berpengaruh positif terhadap financial literacy, sedangkan self-control berpengaruh negatif terhadap financial literacy. Financial literacy juga terbukti berpengaruh secara langsung pada saving behaviour. Parental socialization dan peer influence juga memiliki pengaruh langsung pada saving behaviour. Penelitian ini memberikan pemahaman baru mengenai pentingnya literasi keuangan untuk mendorong perilaku menabung bagi mahasiswa. Peran orang tua dan teman sebaya menjadi faktor penting dalam menumbuhkan literasi keuangan dan perilaku menabung mahasiswa. Industri perbankan dapat berperan dalam meningkatkan financial literacy melalui kerjasama dengan universitas dalam bentuk program virtual account sekaligus untuk sosialisasi tabungan ke mahasiswa. Ini juga menjadi peluang bagi penyedia layanan tabungan untuk memperkenalkan produknya ke konsumen lebih dini.Kata Kunci: literasi keuangan, peer influence, parental socialization, self-control, saving behaviour.
Stability of core‐annular flow with a small viscosity ratio

It is known that the stability problem for core‐annular flow of very viscous crude oil and water is singular, the water annulus appears to be inviscid with boundary layers at the pipe wall and at the interface. In the present paper, this singular problem is treated by the method of matched asymptotic expansions using e=m/Rα as a small parameter. There are two cases of instability corresponding to different positions of the critical point in the annulus. One case is when the critical point is far away from the interface, the other is when the critical point is close to the interface within a distance of order e1/3. In both cases, we derive the equations for the eigenvalues, and give the explicit forms for the neutral curves. The stability problem is also treated by the modified finite element code used by Hu and Joseph [J. Fluid Mech. 205, 359 (1989); Phys. Fluids A 1, 1659 (1989)], taking into account the boundary layers at the pipe wall and at the interface. The results of the two methods agree where the.
On modified versions of some solvable ordinary differential equations due to Chazy

We introduce modified versions, featuring a deformation parameter ω, of four explicitly solvable nonlinear autonomous ordinary differential equations (ODEs) introduced almost a century ago by Chazy (Chazy J 1909 C. R. Acad. Sci., Paris 148 157-9). When the deformation parameter vanishes, ω = 0, the modified ODEs reduce to those introduced by Chazy. When the deformation parameter ω does not vanish and is real (say, positive, ω>0), then all the nonsingular solutions of these modified ODEs, considered as functions of the real independent variable t (say, `time'), are periodic with period T = 2π/ω. For two of these modified ODEs, there is also a (small) subset of these solutions that are (also) periodic with a smaller period.
Coparenting, Couple Conflict, Social Support, and Relationship Quality: A Dyadic Exploration of Couples From LIEM Backgrounds

Economically marginalized families may face enduring vulnerabilities that make adaptive relational processes leading to healthy, long-term relationships more difficult. Informed by the vulnerability-stress-adaptation framework, we utilized an actor-partner interdependence model and dyadic data from a sample of 199 low-income couples who were expecting or had recently given birth to investigate the association of two adaptive processes (couple conflict and coparenting alliance) and two personal resources (instrumental and emotional support) with their relationship quality. Results indicated significant actor effects of men’s and women’s coparenting alliance and men’s instrumental support on their own reports of relationship quality. Additionally, results indicated three significant conjoint actor-partner effects—couple conflict and couple emotional support on women’s relationship quality and couple conflict on men’s relationship quality. These findings contribute to the literature on the transition to parenthood and extend the literature examining dyadic relational processes in families from low-income and economically marginalized backgrounds.
Robust eckart filters for time delay estimation

Minimax or robust filters which optimize worst-case performance have been considered previously for matched and Wiener filtering. In this paper we show how similar ideas can be applied to obtain robust versions of one particular filter, the Eckart filter, for time delay estimation. The use of a robust filter can eliminate the requirement of estimation of the signal and noise power spectral densities (PSD's) and cross PSD's, robust filters being less sensitive in their performance to variations of the input PSD's within specified classes of PSD's. Explicit solutions for specific classes of PSD's are derived, and several numerical examples and simulation results are given. Similar formulations for robust filters should also be possible for other types of filters used in time delay estimation.
The factorization method for inverse acoustic scattering in a layered medium

In this paper, we consider a problem of inverse acoustic scattering by an impenetrable obstacle embedded in a layered medium. We will show that the factorization method can be applied to recover the embedded obstacle; that is, the equation is solvable if and only if the sampling point z is in the interior of the unknown obstacle. Here, is a self-adjoint operator related to the far field operator and ϕz is the far field pattern of the Green function with respect to the problem of scattering by the background medium for point z. The validity of the factorization method is proven with the help of a mixed reciprocity principle and an application of the scattering operator. Due to the established mixed reciprocity principle, knowledge of the Green function for the background medium is no longer required, which makes the method attractive from the computational point of view. The paper is only concerned with sound-soft obstacles, but the analysis can be easily extended for sound-hard obstacles, or obstacles with separated sound-soft and sound-hard parts. Finally, we provide an explicit example for a radially symmetric case and present some numerical examples.
How did young people identified as presenting with social, emotional and behavioural difficulties experience a person-centred transition review meeting?

This paper reports an idiographic study, which explores how three young people identified as presenting with social, emotional and behavioural difficulties (SEBD) experienced the process of a person-centred transition review meeting. Semi-structured interviews were used to gather views and experiences. Interpretative Phenomenological Analysis (IPA) was used to explore participants’ personal experiences in depth. Analysis revealed several themes that occurred across participants. Power was a salient issue, identifiable in different forms across themes. The process of person-centred reviews incorporated an expectation of reciprocity that reduced power imbalances and encouraged the boys and their families to participate more fully. Implications are considered.
Successful application of a dynamic assessment procedure with deaf students between the ages of four and eight years

This study of 13 severe to profoundly deaf children between the ages of four and eight years demonstrates the utility of a dynamic assessment procedure, the Application of Cognitive Functions scale (ACFS), with this population. The children made significant positive pre-test to post-test gains on four of the six subtests, with a strong tendency toward positive gains on a fifth (construct validity). The behaviour observation rating scale, embedded within the ACFS, showed significant positive relationships with most subtests, particularly the behaviours rated during the mediation phase, compared with weaker associations for behaviours during the static pre-test phase (construct validity). Five of the six subtests showed significant correlations with total score (intratest reliability). IQ correlated moderately with ACFS pre-test and not at all with post-test, and chronological age correlated moderately with posttest and not at all with pre-test.
A Beam Finite Element Model Considering the Slip, Shear Lag, and Time-Dependent Effects of Steel–Concrete Composite Box Beams

A beam finite element model considering the slip, shear lag, and time-dependent effects of steel–concrete composite box beams have been proposed in this study. The element is employed to a one-dimensional analytical method that is solved involving an expression of spatial and time-dependent variables. A step-by-step method that does not involve storing the stress and strain histories, which is more accurate than the single-step algebraic method, is employed to solve the time variables. A recursive method was elaborated to determine spatial and time-dependent variables through the above method. The validity of the proposed method in instantaneous analysis is attested by the numerical data of the elaborate finite element model established in a commercial software, ANSYS, and that of the time-dependent analysis is verified by the existing test results on the long-term performance of composite beams. The proposed beam finite element model is applied to predict the time-related behavior of simply supported composite beams after validation. The results show that concrete shrinkage and creep significantly influence the structural responses of the composite box beams. From the initial load on the 28th day to that in the 3rd year, the vertical deflection at the cross-section of the mid-span increased by 47.01%. The interface slip at the end increased by −10.99%. The warping intensity function of the concrete slab and the steel beam at the end caused by shear lag increased by 111.64% and 7.01%, respectively. The maximum compressive stress on the concrete slab and the maximum tensile stress at the steel bottom flange increased by −6.75% and 4.56%, respectively.
Towards understanding the impacts of anxiety on attention and visual working memory

Towards understanding the impacts of anxiety on attention and visual working memory. David M. Spalding and Louise A. Brown Nicholls School of Psychological Sciences & Health, University of Strathclyde, Glasgow, UK. Email: david.m. spalding@strath.ac. uk; Twitter: @DSpaldingStrath Email: l.nicholls@strath.ac. uk; Twitter: @LNichollsStrath Lab webpage: https://www.researchgate. net/lab/Memory-Ageing-Lab-Louise-A-Brown-Nicholls ANXIETY, ATTENTION, VISUAL WORKING MEMORY, VISUAL FEATURE BINDING