Miracle-dz/UniFAR-FTUs huggingface dataset:
Phase transition for the mixing time of the Glauber dynamics for coloring regular trees

We prove that the mixing time of the Glauber dynamics for random k-colorings of the complete tree with branching factor b undergoes a phase transition at k=b(1+ob(1))/ln b. Our main result shows nearly sharp bounds on the mixing time of the dynamics on the complete tree with n vertices for k=Cb/ln b colors with constant C. For C ≥1 we prove the mixing time is O(n1+ob(1)ln n). On the other side, for C<1 the mixing time experiences a slowing down; in particular, we prove it is O(n1/C+ob(1)ln n) and Ω(n1/C-ob(1)). The critical point C=1 is interesting since it coincides (at least up to first order) with the so-called reconstruction threshold which was recently established by Sly. The reconstruction threshold has been of considerable interest recently since it appears to have close connections to the efficiency of certain local algorithms, and this work was inspired by our attempt to understand these connections in this particular setting.
New perspectives of maturity method and innovative approach for high performance concrete applications

This paper presents a maturity concept and approach of applying the maturity method for predicting the development of mechanical properties of high-performance concrete over time. An examination of the activation energy and assumptions taken in the developmental process of the existing maturity method are first presented to better understand the capabilities and limitations of the maturity method, which is supported by new and existing experimental evidence. A practical approach is then proposed in which the activation energy is determined mathematically by minimizing the error between the predictions and experimental data. It is based on a new concept that the same maturity is defined only when different specimens of the same concrete have achieved the same level of a specified property under different curing temperatures. This concept makes the maturity approach more robust and more general for application to different concrete mix formulations and different types of property. The accuracy and feasibility of the proposed approach were successfully confirmed by experimental evidence. * Tel. (1) 613-993-6752. Email: Jieying.Zhang@nrc-cnrc.gc. ca
Ca /calmodulin-dependent and cAMP-dependent kinases in induction of c-fos in human mesangial cells

Zeng, Hong, Ying Liu, and Douglas M. Templeton. Ca2 /calmodulin-dependent and cAMP-dependent kinases in induction of c-fos in human mesangial cells. Am J Physiol Renal Physiol 283: F888–F894, 2002. First published July 2, 2002; 10.1152/ajprenal.00074. 2002. —Mesangial cell proliferation is an early event in several progressive renal diseases. When mesangial cells in culture are rendered quiescent by serum starvation and subsequently stimulated to proliferate, induction of c-fos is an early indicator of entry into the cell cycle. Several heparin-sensitive signals transduce these events. We have examined the potential roles of CaMK and PKA. Selective stimulation of CaMK with Ca2 ionophores and of PKA with forskolin or dibutyryl cAMP both result in induction of c-fos mRNA. CaMK but not PKA signaling is suppressed by low concentrations of heparin. Cross talk between the pathways has been demonstrated in some cells, with evidence of CaMK phosphorylating cAMP response element binding protein (CREB) at an inhibitory site and PKA suppressing CaMK-dependent signaling. However, in the present study, both pathways phosphorylated CREB on Ser133 and induced c-fos in an additive manner. Serum, ionomycin, and forskolin all caused a rapid decline in cyclin D1 levels, but only serum effected a subsequent increase, indicative of cell cycle progression. We conclude that, in human mesangial cells, CaMK and PKA can both contribute to cell cycle entry, and, although induction of c-fos by CaMK requires active PKA, neither pathway antagonizes or synergizes c-fos induction by the other.
Evidence from the Universities in Nigeria

This paper examines the dynamics of integrating forensic accounting into the academic programmes of the universities in Nigeria. The research is a survey, using both primary and secondary data. Forensic accounting professionals in both academic and practice in Nigeria are used as respondents for the study. Both descriptive and inferential statistics are adopted to analyse the data obtained. The outcome of the study reveals that no university in Nigeria offers forensic accounting as a full-fledged degree programme. Forensic accounting academic programme offers vast opportunities. There are observed obstacles inhibiting incorporation of the emerging career into academic programmes of the universities in Nigeria; notably, dearth of qualified academics to teach the courses; low facility level; and bureaucratic bottlenecks. In the context of ignoble position of Nigeria on the Corruption Perceptions Index of the Transparency International, the study concludes that universities should be proactive to societal needs and problems. The study recommends that universities in Nigeria should surmount all barriers to incorporate forensic accounting into their academic programmes. Intending universities should seek the inputs of relevant professional bodies and practitioners when designing the programme, as this will foster employment prospects of the forensic accounting graduates. As this thriving area of knowledge evolves, relevant authorities in Nigeria should ensure that the forensic accounting academic programme is laid on a credible foundation emphasizing scientific investigative methods, expert witnessing techniques and problem-solving skills.
Consequences of intra-uterine growth retardation for postnatal growth, metabolism and pathophysiology

Intra-uterine growth retardation (IUGR), caused by maternal undernutrition or placental insufficiency, is usually associated with disproportionately large reductions in the growth of some fetal organs and tissues (thymus, liver, spleen, thyroid) and impaired cellular development of other tissues (small intestine, secondary wool follicles, skeletal muscle). Growth of other tissues, most notably brain, is relatively unimpaired. In our recent study of postnatal consequences of IUGR in the offspring of prolific ewes, growth-retarded newborn lambs tended to be hypoglycaemic and showed sluggish postnatal engagement of the growth hormone (GH)— insulin-like growth factor (IGF) system. When artificially reared in an optimum environment, low birth weight lambs grew at rates similar to those of normal lambs. However, low birth weight lambs were fatter at any given weight, apparently related to their high energy intakes, especially soon after birth, had low maintenance energy requirements, and limited capacity for bone and muscle growth. These growth characteristics were accompanied by higher plasma concentrations of GH and leptin, and lower concentrations of insulin-like growth factor I (IGF-I) during the first 2 weeks of postnatal life, and higher concentrations of insulin during subsequent growth up to 20 kg body weight. Emerging evidence indicates that in sheep, as in rodents, fetal programming of postnatal cardiovascular and metabolic dysfunctions is associated with IUGR and may be mediated partly by overexposure of the fetus to cortisol. Similar postnatal responses can be elicited by maternal undernutrition or cortisol treatment in early to mid-pregnancy without changing the growth of the fetus or placenta.
Operator ideals associated with the Szlenk index

For $\alpha$ an ordinal, we investigate the class $\mathscr{SZ}_\alpha$ consisting of all operators whose Szlenk index is an ordinal not exceeding $\omega^\alpha$. Our main result is that $\mathscr{SZ}_\alpha$ is a closed, injective, surjective operator ideal for each $\alpha$. We also study the relationship between the classes $\mathscr{SZ}_\alpha$ and several well-known closed operator ideals.
Dynamics of Siegel Rational Maps with Prescribed Combinatorics

We extend Thurston's combinatorial criterion for postcritically finite rational maps to a class of rational maps with bounded type Siegel disks. The combinatorial characterization of this class of Siegel rational maps plays a special role in the study of general Siegel rational maps. As one of the applications, we prove that for any quadratic rational map with a bounded type Siegel disk, the boundary of the Siegel disk is a quasi-circle which passes through one or both of the critical points.
Flow visualization and velocity measurements in the turbulent boundary layer of a laboratory shallow channel

Flow visualization and velocity measurements were obtained in an open channel of 20 m length and 1 m width and 0.08 m depth, with a Reynolds number of 12000. The test section had a glass lateral wall and acrylic bottom wall to allow optical access. The images of dye injected at the bottom of the channel were recorded with two video cameras and velocities were measured with a hot film anemometer. The two video cameras and the velocity measurements were synchronized; correlation of the image and traced velocity were processed in a computer. When the velocity sensor was located at about 50 wall units, the velocity increased when a shear layer was passing behind it. The image from the plane and side views were also correlated in order to analyze some aspects of the tridimensionality of the flow structures. From the images, it was also possible to determine important parameters of the turbulent boundary layer structures such as the length and the angle from the wall of the vortical structures. From the velocity auto-correlation, the time duration of those structures determined to be 1.7 seconds, in agreement with the results, in similar conditions, of Nakagawa and Nezu [9]. Measured velocity profiles were compared with the logarithmic law and found to be in good agreement. Results confirm a number of published experimental findings and also present new information on the structure of the turbulent boundary layer. Transactions on Engineering Sciences vol 18, © 1998 WIT Press, www.witpress. com, ISSN 1743-3533
Geometrical interpretation of the topological recursion, and integrable string theories

Symplectic invariants introduced in math-ph/0702045 can be computed for an arbitrary spectral curve. For some examples of spectral curves, those invariants can solve loop equations of matrix integrals, and many problems of enumerative geometry like maps, partitions, Hurwitz numbers, intersection numbers, Gromov-Witten invariants. The problem is thus to understand what they count, or in other words, given a spectral curve, construct an enumerative geometry problem. This is what we do in a semi-heuristic approach in this article. Starting from a spectral curve, i.e. an integrable system, we use its flat connection and flat coordinates, to define a family of worldsheets, whose enumeration is indeed solved by the topological recursion and symplectic invariants. In other words, for any spectral curve, we construct a corresponding string theory, whose target space is a submanifold of the Jacobian.
2019 ANIONIC CARBONATE ACTIVATION OF LAYERED ( α + β ) NICKEL

Different types of nickel hydroxides posses rather high electrochemical activity [1]. Therefore, these compounds are widely used in different electrochemical devices. Ni(OH) 2, along with double and triple nickel hydroxides, is a core component of nickel oxide electrode in alkaline Ni-Cd, Ni-Fe and Ni-MeH accumulators [2, 3]. Ni(OH)2 is also used in lithium batteries [4]. Nickel hydroxides are used as the active material of the Faradic electrode of hybrid supercapacitors. Ni(OH)2 is used on its own [5] (nano-sized [6] or ultrafine [7]), and in the form of composite with nanocarbon materials (graphene oxide [8], carbon nanotubes [9]). For thin layer supercapacitors, a film of Ni(OH)2 can be formed on the conductive substrate [10]. Because thin films of Ni(OH)2 are transparent, and NiOOH has dark-brown color, nickel hydroxide is used as electrochromic material [11, 12]. Nickel hydroxide has high electrocatalytic activity and is used for electrooxidation of various organic compounds [13, 14], and in the sensors [15, 16]. Each use case requires a specific set of nickel hydroxide parameters. Directed synthesis of the product with desired characteristics has become a trend in the modern chemical industry. Activation is one of the relevant methods for improving structural properties and electrochemical activity of nickel hydroxide.
Delft University of Technology Modeling wildfire spread in wildland-industrial interfaces using dynamic Bayesian network

Global warming and the subsequent increase in the frequency and severity of wildfires demand for specialized risk assessment and management methodologies to cope with the ever-increasing risk of wildfires in wildland-industrial interfaces (WIIs). Wildfires can jeopardize the safety and integrity of industrial plants, and trigger secondary fires and explosions especially in the case of process plants where large inventory of combustible and flammable substances is present. In the present study, modeling the WII as a two dimensional lattice, we have developed an innovative methodology for risk assessment of wildfire in WIIs by combining the dynamic Bayesian network and wildfire behavior prediction models. The developed methodology models the spatial and temporal spread of fire in WIIs, based on the most probable path of fire, both in the wildland and in the industrial area.
On the Axiomatics of Ann-Categories

In this paper, we have studied the axiomatics of {\it Ann-categories} and {\it categorical rings. } These are the categories with distributivity constraints whose axiomatics are similar with those of ring structures. The main result we have achieved is proving the independence of the axiomatics of Ann-category definition. And then we have proved that after adding an axiom into the definition of categorical rings, we obtain the new axiomatics which is equivalent to the one of Ann-categories.
dium in response to coronary artenolar vasodilation without change in aortic perfusion

One hundred and eleven patients underwent rest-stress PET perfusion imaging and quantitative coronary angiography at the University ofTexas School ofMedicine between July 1985 and October 1986. Cardiac catheterization reports were ret rospectively reviewed, and cineangiograms of those patients reported to have any form of collateral circulation were eval uated by two experienced readers without knowledge of the PETscan results,priorto quantitativeanalysisofthe perfusion images. Patients who had undergone coronary artery bypass surgery were excluded. From this group, twenty-eight patients were identified as having well-developed, intercoronary col laterals by angiography. Of the remaining patients without reported arteriographic collaterals, those with coronary artery disease (CAD), defined as abnormal stenosis flow reserve by quantitative arteriog raphy (flow reserve < 4.5) or documented prior myocardial infarction, constituted the control group. Absence of collat erals in these patients was verified by review of cineangiograms by the same readers without knowledge of the PET scan results. From this group, twenty-five patients were identified as havingCAD without intercoronarycollateralsby angiog raphy. Coincidentally, half of the patients in each group had a history of transmural myocardial infarction. All patients gave informed consent in accordance with the protocol approved by the Committee for Protection of Human Subjects. Results are reported as mean Â±s.d. , and statistical significance are assessed by the chi-square test.
Studies in Humanities and Education

Climate variability and change has caused instability in production and decline in productivity exacerbating food insecurity particularly in Latin America, Africa including Ethiopia and some parts of Asia. The magnitude and frequency of extreme climatic events are projected to increase. The effects of these climatic changes will become even more pronounced among small scale farmers whose farming activities are weather dependent and vulnerable to climate change, and already affected by environmental degradation and socioeconomic risks. Effective adaptation to climate change among small scale farmers is therefore of critical importance and is dependent on the adoption of climate-smart practices. However, studies have shown low adoption of climate-smart farming practices among small scale farmers world over, in East Hararghe Zone and Kurfa Chele District. This study, therefore, examined factors influencing adoption of climate-smart practices among farmers Kurfa Chele District, East Hararghe Zone, evaluated their existing knowledge, attitude and practice of these practices, assessed their perception of climate change, examined the extent of climate information dissemination, and the resultant impact on the uptake of these practices. The research adopted a survey research design, where both quantitative and qualitative research strategies were used. Data was gathered through Focus Group Discussions, questionnaires, key informant interviews, observations and a desk review. Both simple random and purposive sampling was used to sample 420 small scale farmers and technical officers of the agriculture sector respectively. Data were analysed using both quantitative and qualitative techniques. To test the statistical significance of the findings and relationships between the variables, the chi-square test was used.
Professional Learning Community, Trust, and Teacher Professional Development in Malaysian Secondary Schools

The professional learning community (PLC) has been shown to nurture a dynamic and positive school culture, where teachers are encouraged to enhance their professional skills and knowledge. This study aimed to identify the levels of PLC, Teacher Professional Development (TPD), and trust among secondary school teachers in Malaysia, as well as determined the relationship between PLC and TPD, PLC and trust, and trust and TPD. Questionnaires were distributed to 272 teachers who were selected using stratified random sampling. Descriptive and inferential statistics were used to analyse the data. Findings show that teachers practice high level of all domains of PLC. The teachers also perceived that they practice high levels of TPD and trust. In addition, there are significant, positive, and weak correlations between all domains of PLC and TPD, as well as TPD and trust. However, there are significant, positive, and strong correlation between all domains of PLC and trust. In conclusion, PLC practices is related to trustful culture in school as well as good professional development among the teachers. The findings implicate that PLC should be encouraged in all teaching institutions to enhance the quality of teaching and learning, as well as the teaching and learning experience for all teachers and students.
Steinberg lattice of the general linear group and its modular reduction

Let G 1⁄4 GLnðqÞ be the general linear group of degree nd 2 defined over a finite field Fq of characteristic p. We fix a prime l0 p and let R denote a local principal ideal domain having characteristic 0, maximal ideal lR, and containing a primitive p-th root of unity. Then the residue field K 1⁄4 R=lR has characteristic l and a primitive p-th root of unity. By a Steinberg lattice of G over R we understand a left RG-module, say M, which is free of rank qnðn 1Þ=2 as an R-module and a¤ords the Steinberg character. The reduction of M modulo l is the KG-module M=lM. In this paper the Steinberg lattice is the left ideal I 1⁄4 RG e of the group algebra RG,
Ricci flow on asymptotically conical surfaces with nontrivial topology

Abstract As part of the general investigation of Ricci flow on complete surfaces with finite total curvature, we study this flow for surfaces with asymptotically conical (which includes as a special case asymptotically Euclidean) geometries. After establishing long-time existence, and in particular the fact that the flow preserves the asymptotically conic geometry, we prove that the solution metric g(t) expands at a locally uniform linear rate; moreover, the rescaled family of metrics t−1g(t) exhibits a transition at infinite time inasmuch as it converges locally uniformly to a complete, finite area hyperbolic metric which is the unique uniformizing metric in the conformal class of the initial metric g0.
A colocalization spectral sequence

Colocalization is a right adjoint to the inclusion of a subcategory. Given a ring-spectrum R, one would like a spectral sequence which connects a given colocalization in the derived category of R-modules and an appropriate colocalization in the derived category of graded modules over the graded ring of homotopy groups of R. We show that, under suitable conditions, such a spectral sequence exists. This generalizes Greenlees' local-cohomology spectral sequence. The colocalization spectral sequence introduced here is associated with a localization spectral sequence, which is shown to be universal in an appropriate sense. We apply the colocalization spectral sequence to the cochains of certain loop spaces, yielding a non-commutative local-cohomology spectral sequence converging to the shifted cohomology of the loop space, a result dual to the local-cohomology theorem of Dwyer, Greenlees and Iyengar. An application to the abutment term of the Eilenberg-Moore spectral sequence is also presented.
A study develops a clinical test to evaluate hypernasality in voice

Previous studies on nasalized vowels showed little coincidence on the acoustical traits of nasality. The experimental approach of the UAB team compared pairs of vowels from 40 different volunteers, each pair consisting of a purely oral production and a nasalized production. The recordings were evaluated by 5 different expert judges for the degree of perceived nasality. The 80 voice productions were thus ranked according to the average score of perceived nasality. The samples were then thoroughly analysed using advanced acoustic analysis tools. In this manner, the study identifies two significant and consistent acoustic alterations due to nasal resonances, robustly specific for hypernasal vowels.
Higher exponential maps and explicit reciprocity laws I

In this paper, we generalize the explicit reciprocity law of Cherbonnier and Colmez (Theoreme IV.2.1 in (7)) to local fields of mixed characteristic (0, p) of arbitrarily high dimension. For this generalisation, we define higher exponential maps, which are generalisations of the classical Bloch- Kato exponential map as constructed in (4). (If K is of dimension d and V is a de Rham representation of Gal( ¯ K/K), then we define exponential maps exp(i),K,V for 1� id. )
Limited scope adic transformations

We introduce a family of adic transformations on diagrams that are nonstationary and nonsimple. This family includes some previously studied adic transformations. We relate the dimension group of each these diagrams to the dynamical system determined by the adic transformation on the infinite edge paths, and we explicitly compute the dimension group for a subfamily. We also determine the ergodic adic invariant probability measures for this subfamily, and show that each system of the subfamily is loosely Bernoulli. We also give examples of particular adic transformations with roots of unity as well as one which is totally ergodic called the Euler adic. We also show that the Euler adic is loosely Bernoulli.