Pairings in Cryptology: efficiency, security and applications

Abstract The study of pairings can be considered in so many di�erent ways that it may not be useless to state in a few words the plan which has been adopted, and the chief objects at which it has aimed. This is not an attempt to write the whole history of the pairings in cryptology, or to detail every discovery, but rather a general presentation motivated by the two main requirements in cryptology; e�ciency and security. Starting from the basic underlying mathematics, pairing maps are con- structed and a major security issue related to the question of the minimal embedding �eld [12]1 is resolved. This is followed by an exposition on how to compute e�ciently the �nal exponentiation occurring in the calculation of a pairing [124]2 and a thorough survey on the security of the discrete log- arithm problem from both theoretical and implementational perspectives. These two crucial cryptologic requirements being ful�lled an identity based encryption scheme taking advantage of pairings [24]3 is introduced. Then, perceiving the need to hash identities to points on a pairing-friendly elliptic curve in the more general context of identity based cryptography, a new technique to efficiently solve this practical issue is exhibited. Unveiling pairings in cryptology involves a good understanding of both mathematical and cryptologic principles. Therefore, although �rst pre- sented from an abstract mathematical viewpoint, pairings are then studied from a more practical perspective, slowly drifting away toward cryptologic applications

Family Involvement, Clinician Beliefs and Child Psychiatric Rehospitalization

Psychiatric rehospitalization is estimated to fall between 30% and 50% among children and adolescents and is said to be the result of complex relationships between clinical and non-clinical child, family and service system factors. Psychiatric rehospitalization has been noted as an unfavorable outcome of inpatient treatment because of the associated economic to society and the family and emotional costs to the family and patient. Therefore, several attempts have been made in the relevant literature to identify and understand factors that will reduce the risk of rehospitalization in this population. In the context of parent professional collaboration, clinician beliefs and family involvement have been indicated as important aspects of treatment among children and youth. To better understand how clinician beliefs and family involvement in treatment influence psychiatric rehospitalization, a prospective study was conducted across four phases on the child and adolescent inpatient units at a large psychiatric facility in Southern California. Data was collected from parents (N=167) of hospitalized children (ages 8-13) and adolescents (ages 14-17) and from a multidisciplinary psychiatric clinical team (N=27). Study findings indicated that neither clinician beliefs nor parent participation in inpatient activities significantly predicted psychiatric rehospitalization. Parent perceptions of empowering behaviors on the part of clinicians, previous hospitalization and psychosocial risk significantly predicted psychiatric rehospitalization. Clinician beliefs did not moderate the relationship between empowering clinician behaviors and psychiatric rehospitalization. Additionally, nearly one-quarter of the children were rehospitalized within 90 days of discharge. Most of the children rehospitalized within the intervening period, were previously hospitalized, had 1 to 2 psychosocial risk factors, longer lengths of stay and were diagnosed with an internalizing disorder. The findings presented may be used to inform research, practice and policies aimed at improving mental health outcomes for children and adolescents with severe emotional and behavioral disorders

SOCIAL INTERACTIONS AND INSTRUCTIONAL PRACTICES AMONG ENGLISH AS FOREIGN LANGUAGE TEACHERS: LESSONS FROM TRENDS IN BENIN REPUBLIC

This study examines Social Interactions on Instructional Practices among EFL Teachers in some secondary schools in Benin Republic. The methodology guiding the research is induced by the study typology. It considers a sampled population of seventy- seven 77 respondents made up of male and female teachers of English. The data collection tools adopted to operationalize the research are questionnaire and interview guide. Data emanating from the questionnaire harvest are disaggregated along the frequency and percentage lines. As for the interview data they are analyzed against the backdrop of the research questions. The findings of the study reveal four interactions types among EFL teachers. Those are mainly collaboration, individualism, contrived collegiality and balkanization. The study also comes up with the view that EFL teachers’ instructional practices are significantly influenced by social interactions. Therefore, it is important that educational authorities promote social interactions among teachers in order to enhance effective teaching and learning of English language

Percepción del clima social familiar y conductas sexuales de riesgo, según el sexo, en adolescentes de 14 a 20 años que concurren a los consultorios externos de un hospital provincial de Villa Gobernador Gálvez

Estudio Observacional Descriptivo Transversal ProspectivoLa adolescencia es una etapa de búsqueda de identidad en la cual se generan conductas de riesgos, entre ellas, las relacionadas con la sexualidad, afectando directamente el desarrollo familiar y social. Las conductas sexuales de riesgo representan la exposición de los adolescentes a una o varias situaciones que comprometen la salud sexual y reproductiva. Este trabajo de investigación tiene como objetivo describir la relación que existe entre la percepción del clima social familiar y las conductas sexuales de riesgo, según el sexo, de los adolescentes de 14 a 20 años que concurren de manera ambulatoria a los consultorios externos de un hospital provincial de Villa Gobernador Gálvez durante el primer semestre de 2022. Será un estudio observacional, descriptivo, transversal y prospectivo; con una población de aproximadamente 100 adolescentes de 14 a 20 años. El tipo de muestreo será no probabilístico. La recolección de los datos se realizará mediante dos cuestionarios, la escala del clima social familiar de R.H. Moos, B.S. Moos y E.J., Trickett; y la Escala de conductas sexuales de riesgos de Ingledew y Ferguson. Se utilizará estadística descriptiva y se realizará análisis univariado y bivariado para la comparación de las variables en estudio, utilizando el programa estadístico SSPS. Los datos serán presentados en gráficos de barra y en tablas de distribución de frecuencia.Fil: Charlemagne, Yvelande. Universidad Nacional de Rosario. Facultad de Ciencias Médicas. Escuela de Enfermería. Maestría en administración de Servicios de Enfermería. Rosario; Argentin

SOCIAL INTERACTIONS AND INSTRUCTIONAL PRACTICES AMONG ENGLISH AS FOREIGN LANGUAGE TEACHERS: LESSONS FROM TRENDS IN BENIN REPUBLIC

This study examines Social Interactions on Instructional Practices among EFL Teachers in some secondary schools in Benin Republic. The methodology guiding the research is induced by the study typology. It considers a sampled population of seventy- seven 77 respondents made up of male and female teachers of English. The data collection tools adopted to operationalize the research are questionnaire and interview guide. Data emanating from the questionnaire harvest are disaggregated along the frequency and percentage lines. As for the interview data they are analyzed against the backdrop of the research questions. The findings of the study reveal four interactions types among EFL teachers. Those are mainly collaboration, individualism, contrived collegiality and balkanization. The study also comes up with the view that EFL teachers’ instructional practices are significantly influenced by social interactions. Therefore, it is important that educational authorities promote social interactions among teachers in order to enhance effective teaching and learning of English language

Bio-Based Renewable Additives for Anti-Icing Applications (Phase II)

The performance and impacts of several agro-based anti-icers along with a traditional chloride-based anti-icer (salt brine) were evaluated. A statistical design of experiments (central composite design) was employed for developing anti-icing liquids consisting of cost-competitive chemicals such as agro-based compounds (e.g., Concord grape extract and glycerin), sodium chloride, sodium metasilicate, and sodium formate. The following experimentally obtained parameters were examined as a function of the formulation design: ice-melting capacity at 25°F (−3.9°C), splitting strength of Portland cement mortar samples after 10 freeze-thaw/deicer cycles, corrosion rate of C1010 carbon steel after 24-hour immersion, and impact on asphalt binder stiffness and m-value. One viable formula (“best performer”) was tested for thermal properties by measuring its differential scanning calorimetry (DSC) thermograms, the friction coefficient of asphalt pavement treated by this anti-icing formulation (vs. 23 wt.% NaCl and beet juice blend) at 25°F after being applied at 30 gallons per lane mile (1 hour after simulated trafficking and plowing), and other properties (pH, oxygen demand in COD). Laboratory data shed light on the selection and formulation of innovative agro-based snow- and ice-control chemicals that can significantly reduce the costs of winter maintenance operations