\pi N and \eta p deexcitation channels of the N^* and \Delta baryonic resonances between 1470 and 1680 MeV

Two reactions, pp->ppX and pp->p\pi^+X, are used to study the 1.47<M<1.68 GeV baryonic mass range. Three different final states are considered in the invariant masses: N^* or \Delta^+, p\pi^0, and p\eta. The last two channels are defined by software cuts applied to the missing mass of the first reaction. Several narrow structures are extracted with widths \sigma(\Gamma) varying between 3 and 9 MeV. Some structures are observed in one channel but not in others. Such nonobservation may be due either to the spectrometer momenta limits or to the physics (e.g. no such disintegration channel is allowed from the narrow state considered). We tentatively conclude that the broad Particle Data Group (PDG) baryonic resonances N(1520)D13, N(1535)S11, Delta(1600)P33, and N(1675)D15 are collective states built from several narrow and weakly excited resonances, each having a (much) smaller width than the one reported by PDG.Comment: 29 pages, plus 50 (.png) figures Will be published in a slightly reduced size in Phys. Rev.

Proton-proton bremsstrahlung below and above pion-threshold: the influence of the Δ\Delta-isobar

The proton-proton bremsstrahlung is investigated within a coupled-channel model with the $\Delta$ degree of freedom. The model is consistent with the $NN$ scattering up to 1 GeV and the $\gamma N\Delta$ vertex determined in the study of pion photoproduction reactions. It is found that the $\Delta$ excitation can significantly improve the agreements with the $pp \rightarrow pp\gamma$ at $E_{lab}=280$ MeV. Predictions at $E_{lab}=550$ and $800$ MeV are presented for future experimental tests.Comment: 26 pages Revtex, 12 figures are available from the authors upon request ([email protected]

Bremsstrahlung in intermediate-energy nucleon reactions within an effective one-boson exchange model

Within a covariant effective one-boson exchange model for the $T$ matrix of $NN$ interactions we present detailed calculations of bremsstrahlung cross sections for proton - proton and proton - neutron reactions at beam energies in the 1 GeV region. Besides pure bremsstrahlung processes we consider photons from $\Delta$ decays and contributions from the $\eta \to \gamma \gamma$ process. At beam energies above 700 MeV the $\Delta$ decay channel dominates the spectra at large photon energies, where the interference between non-resonance processes and the $\Delta$ decay channel becomes also important. Low energy photons stem from pure bremsstrahlung processes. The available experimental data at 730 MeV beam energy is well described. We extrapolate the model down to 280 MeV, where more detailed experimental data exist, and find agreement with angular distributions.Comment: 20 pages with 10 figures, to be published in Nucl. Phys.

The evolution of idea of socio-economic development

Motivation: The way of understanding of development concept in economics has been changing since the beginning of the discipline: from economic growth, through economic development to socio-economic development. The author of the paper believes that it is important to indicate features of socio-cultural context that shape understanding of this phenomenon. It will make it possible to explain why and how the understanding of development in economics has changed and appropriately understand definitions of this process that are proposed by contemporary researchers.Aim: The purpose of the paper is to reconstruct features of socio-cultural context in which it has changed the way of understanding of development concept in economics.Results: Division of economic development and economic growth took place in 1960s. Change of understanding of development concept was caused by the following factors: (1) influence of new sociological and philosophical ideas, (2) historical events (mainly the Second World War and decolonisation process), (3) growing meaning of formalism and scientism in economic considerations, (4) appearance of mechanistic ideas in economics, (5) international cooperation for development that allows to formulate preferred development goals

Construct validity, dimensionality and factorial invariance of the Rosenberg Self Esteem Scale: A bifactor modelling approach among children of prisoners

The Rosenberg Self Esteem Scale (RSES; Rosenberg, 1989) has traditionally been conceptualised as a unidimensional measure of self-esteem but empirical evidence is equivocal, with some studies supporting a one-factor solution and others favouring multidimensional models. The aim of this study was to examine the factor structure, factorial invariance and composite reliability of the RSES within a European sample of children affected by parental imprisonment (N = 724). The study specified and tested six alternative factor models using conventional confirmatory factor analytic (CFA) techniques and a confirmatory bifactor modelling approach. The RSES was most effectively represented by a bifactor model including a general self-esteem factor comprising of all ten scale items and separate method effects for the positively and negatively phrased items. This model was found to be factorially invariant among boys and girls. Composite reliability indicated good internal consistency for the general self-esteem dimension but slightly less so for the positive and negative methods effects. Results are discussed in terms resolving the debate surrounding the appropriate factor structure and scoring of the RSES

The Pauline Model of Atonement in Romans 3:19-31

The Pauline model of Romans 3:19-31 is a description of substitutionary atonement. Sin, guilt, righteousness, faith in Christ, justification, redemption, propitiation, Christ a covering, atonement in his blood, substitute, justice, justifier, and the principle of faith are descriptive of this view of the atonement. A barrage of literature has arisen against penal substitution. Penal substitution has been confused with substitutionary atonement. Penal substitution has also been referred to as penal substitutionary atonement which isn’t substitutionary atonement. Substitutionary atonement has been clouded by such atonement theories as Christus Victor. Aulen’s view of reconciliation doesn’t adequately describe the New Testament atonement. Substitutionary atonement has been clouded by such atonement teaching on both reconciliation and salvation. Secondly, by others who have objected to the violent nature of the atonement. Steve Chalke and Alan Mann are representative of this view. Thirdly, historical research on the atonement has been neglected. The Church Fathers held the view of substitutionary atonement. Fourthly, assaults have been made on penal substitution at the same time failing to comprehend the difference between penal substitution and substitutionary atonement. Critics of the nature of the atonement may lack the exegetical and historical skills to do justice to atonement theory

Chronicity and Mental Health Service Utilization for Anxiety, Mood, and Substance Use Disorders among Black Men in the United States; Ethnicity and Nativity Differences.

This study investigated ethnic and nativity differences in the chronicity and treatment of psychiatric disorders of African American and Caribbean Black men in the U.S. Data were analyzed from the National Survey of American Life, a population-based study which included 1859 self-identified Black men (1222 African American, 176 Caribbean Black men born within the U.S., and 461 Caribbean Black men born outside the U.S.). Lifetime and twelve-month prevalence of DSM-IV mood, anxiety, and substance use disorders (including Bipolar I and Dysthmia), disorder chronicity, and rate of mental health services use among those meeting criteria for a lifetime psychiatric disorder were examined. Logistic regression models were employed to determine ethnic differences in chronicity, and treatment utilization for disorders. While rates of DSM-IV disorders were generally low in this community sample of Black men, their disorders were chronic and remained untreated. Caribbean Black men born in the U.S. had higher prevalence of Post-Traumatic Stress Disorder, Major Depressive Disorder, and Alcohol Abuse Disorder compared with African American men. Foreign born Caribbean Black men experienced greater chronicity in Social Phobia and Generalized Anxiety Disorder compared to other Black Men. Utilization of mental health service was low for all groups of Black Men, but lowest for the foreign born Caribbean Black men. Results underscore the large unmet needs of both African American and Caribbean Black men in the United States. Results also highlight the role of ethnicity and nativity in mental disorder chronicity and mental health service utilization patterns of Black men

Electromagnetic interactions in Halo Effective Field Theory

After a brief discussion of effective field theory applied to nuclear clusters, I concentrate on the inclusion of two particular aspects, namely, narrow resonances and electromagnetic interactions. As examples of applications, I present the details of our studies on alpha-alpha and proton-alpha scattering.Comment: 11 pages, 5 figures, lead parallel talk given at the 19th Intl. IUPAP Conf. on Few-Body Problems in Physics, Bonn, Germany, Aug.31-Sep.5 200