Why the Christian day school phenomenon

In the last twenty years the Christian day school\u27s enrollment has soared. There are many estimates as to the number of such schools and the number of pupils in attendance. Some schools are so independent they refuse to report enrollment and other related data to any church school organization much less to a state or federal education agency. The United States now has approximately five to six thousand Christian day schools with enrollment estimated over one million pupils (Reese, 1985)

Background matters, but not whether parents are immigrants: outcomes of children born in Denmark

On average, children born in Denmark with immigrant parents (first-generation locals) have lower earnings, higher unemployment, less education, more welfare transfers, and more criminal convictions than children with local-born parents. This is different from the US where first-generation locals often have better unconditional outcomes. However, like the US, when we condition on parental socio-economic characteristics, first-generation locals generally perform as well or better than the children of locals. There is little distinctive about being a child of immigrants, other than the fact that they are more likely to come from deprived backgrounds

Correction-to-scaling exponents for two-dimensional self-avoiding walks

We study the correction-to-scaling exponents for the two-dimensional self-avoiding walk, using a combination of series-extrapolation and Monte Carlo methods. We enumerate all self-avoiding walks up to 59 steps on the square lattice, and up to 40 steps on the triangular lattice, measuring the mean-square end-to-end distance, the mean-square radius of gyration and the mean-square distance of a monomer from the endpoints. The complete endpoint distribution is also calculated for self-avoiding walks up to 32 steps (square) and up to 22 steps (triangular). We also generate self-avoiding walks on the square lattice by Monte Carlo, using the pivot algorithm, obtaining the mean-square radii to ~0.01% accuracy up to N = 4000. We give compelling evidence that the first non-analytic correction term for two-dimensional self-avoiding walks is Delta_1 = 3/2. We compute several moments of the endpoint distribution function, finding good agreement with the field-theoretic predictions. Finally, we study a particular invariant ratio that can be shown, by conformal-field-theory arguments, to vanish asymptotically, and we find the cancellation of the leading analytic correction.Comment: LaTeX 2.09, 56 pages. Version 2 adds a renormalization-group discussion near the end of Section 2.2, and makes many small improvements in the exposition. To be published in the Journal of Statistical Physic

Deriving Abstract Interpreters from Skeletal Semantics

This paper describes a methodology for defining an executable abstract interpreter from a formal description of the semantics of a programming language. Our approach is based on Skeletal Semantics and an abstract interpretation of its semantic meta-language. The correctness of the derived abstract interpretation can be established by compositionality provided that correctness properties of the core language-specific constructs are established. We illustrate the genericness of our method by defining a Value Analysis for a small imperative language based on its skeletal semantics.Comment: In Proceedings EXPRESS/SOS2023, arXiv:2309.0578

Presentation by the University of Nevada, Las Vegas: College of Fine Arts

Program listing performers and works performe

Ontologies for the study of neurological disease

We have begun work on two separate but related ontologies for the study of neurological diseases. The first, the Neurological Disease Ontology (ND), is intended to provide a set of controlled, logically connected classes to describe the range of neurological diseases and their associated signs and symptoms, assessments, diagnoses, and interventions that are encountered in the course of clinical practice. ND is built as an extension of the Ontology for General Medical Sciences — a high-level candidate OBO Foundry ontology that provides a set of general classes that can be used to describe general aspects of medical science. ND is being built with classes utilizing both textual and axiomatized definitions that describe and formalize the relations between instances of other classes within the ontology itself as well as to external ontologies such as the Gene Ontology, Cell Ontology, Protein Ontology, and Chemical Entities of Biological Interest. In addition, references to similar or associated terms in external ontologies, vocabularies and terminologies are included when possible. Initial work on ND is focused on the areas of Alzheimer’s and other diseases associated with dementia, multiple sclerosis, and stroke and cerebrovascular disease. Extensions to additional groups of neurological diseases are planned. The second ontology, the Neuro-Psychological Testing Ontology (NPT), is intended to provide a set of classes for the annotation of neuropsychological testing data. The intention of this ontology is to allow for the integration of results from a variety of neuropsychological tests that assay similar measures of cognitive functioning. Neuro-psychological testing is an important component in developing the clinical picture used in the diagnosis of patients with a range of neurological diseases, such as Alzheimer’s disease and multiple sclerosis, and following stroke or traumatic brain injury. NPT is being developed as an extension to the Ontology for Biomedical Investigations

Tell Me More: Parent–Child Sexual Talk and Young Adult Sexual Communication Satisfaction with Romantic Partners

Young adults (18–30) tend to show insufficient levels of communication about sex with their romantic partners, despite its many benefits to relationships among this age group. Learned sexual shame and guilt can play a role in inhibiting sexual communication with partners, and early messages about sex from parents stemming from narrow cultural boundaries of communication may play a role in fostering sexual shame and guilt from a young age, potentially influencing later sexual communication patterns with partners. We sought to identify whether a significant relationship existed between the sexual communication participants received from parents while growing up and their current sexual communication satisfaction, relational satisfaction, and sexual satisfaction with romantic partners. Path analysis revealed a significant, positive link between parent–child sexual communication and current partner sexual communication satisfaction while controlling for all other variables and length of relationship. ANOVA analyses revealed greater reported sex guilt among males and highly religious participants. Correlation and regression analyses yielded significant, positive relationships between former parent–child communication quality and current young adult sexual satisfaction with partner. Clinical implications and research directions are discussed for increasing open parent–child sex communication

Interplay between Fe and Nd magnetism in NdFeAsO single crystals

The structural and magnetic phase transitions have been studied on NdFeAsO single crystals by neutron and x-ray diffraction complemented by resistivity and specific heat measurements. Two low-temperature phase transitions have been observed in addition to the tetragonal-to-orthorhombic transition at T_S = 142 K and the onset of antiferromagnetic (AFM) Fe order below T_N = 137 K. The Fe moments order AFM in the well-known stripe-like structure in the (ab) plane, but change from AFM to ferromagnetic (FM) arrangement along the c direction below T* = 15 K accompanied by the onset of Nd AFM order below T_Nd = 6 K with this same AFM configuration. The iron magnetic order-order transition in NdFeAsO accentuates the Nd-Fe interaction and the delicate balance of c-axis exchange couplings that results in AFM in LaFeAsO and FM in CeFeAsO and PrFeAsO.Comment: revised; 4 pages, 3 figures; accepted for publication in Phys. Rev.