Aid Effectiveness: New Instrument, New Results?

Despite a voluminous literature on the topic, the question of whether foreign aid leads to growth is still controversial. To observe the pure effect of aid, researchers used instruments that must be exogenous to growth and explain well aid flows. This paper argues that instruments used in the past do not satisfy these conditions. We propose a new instrument based on predicted aid quantity and argue that it is a significant improvement relative to past approaches. We find a significant and relatively big effect of aid: a one standard deviation increase in received aid is associated with a 1.6 percentage points higher growth rate.Foreign aid; growth; instrumental variables; GMM

Anxiety and Healthcare Utilization Among Mothers of Children With Mental Health Disorders

Anxiety can influence an individual\u27s decision-making process; however, researchers have yet to establish whether anxiety has an impact on the healthcare utilization practices of mothers of children with a mental health diagnosis. The purpose of this study was to assess whether trait anxiety, coping styles, and self-efficacy in mothers of children with a mental health diagnosis affected their healthcare utilization decisions. The transactional model of stress and coping was used to analyze the impact of children with mental health disorders on their caretakers. For this study, a quantitative, cross-sectional research design was employed. The 4 survey tools, administered through SurveyMonkey.com as well as in paper form, included the Brief COPE, State-Trait Anxiety Inventory for Adults (STAID-AD), Health Self-Efficacy Measure, and Healthcare Utilization Questionnaire. Study participants (N = 152) were mothers primarily ages 30-49 years (90.8%), Caucasian (57.9%), and high school graduates (63.2%) who were residents of Lawrence County, Pennsylvania. Mothers reported their children were primarily ages 3-6 years (34.2%), Caucasian (49.3%), had a mental health diagnosis, were living in the home, and were currently in mental health treatment. The outcomes of a binary logistic regression found that trait anxiety did not have a significant impact on healthcare utilization. A Sobel test of mediation indicated that coping styles and self-efficacy were not mediating variables between trait anxiety and healthcare utilization. The implications for positive social change as a result of this research may lead to the training of healthcare providers on the specific characteristics of mothers of children with a mental health diagnosis and the development of social policies concerning healthcare utilization

Clustering effects in the 6^6Li(p,3^3He)4^4He reaction at astrophysical energies

Background: The understanding of nuclear reactions between light nuclei at energies below the Coulomb barrier is important for several astrophysical processes, but their study poses experimental and theoretical challenges. At sufficiently low energies, the electrons surrounding the interacting ions affect the scattering process. Moreover, the clustered structure of some of these nuclei may play a relevant role on the reaction observables. Purpose: In this article, we focus on a theoretical investigation of the role of clustered configurations of $^6$Li in reactions of astrophysical interest. Methods: The $^6$Li(p,$^3$He)$^4$He reaction cross section is described considering both the direct transfer of a deuteron as a single point-like particle in Distorted Wave Born Approximation (DWBA), and the transfer of a neutron and a proton in second-order DWBA. A number of two- and three-cluster structure models for $^6$Li are compared. Results: Within the two-cluster structure model, we explore the impact of the deformed components in the $^6$Li wave-function on the reaction of interest. Within the three-cluster structure model, we gauge the degree of $\alpha$-d clustering and explicitly probe its role on specific features of the reaction cross section. We compare the energy trend of the astrophysical $S$ factor deduced in each case. Conclusions: Clustered $^6$Li configurations lead in general to a significant enhancement of the astrophysical factor in the energy region under study. This effect only originates from clustering, whereas static deformations of the ground-state configuration play a negligible role at very low energies

Quanto e come spendono i candidati. I costi delle campagne elettorali a Napoli nel 1994 e nel 1996

La legge 515/93 sulla disciplina delle campagne elettorali. La ricerca: obiettivi e strumenti. Il quadro generale: gli esiti elettorali nei 13 collegi napoletani. Le spese complessive dei due schieramenti. Analisi delle entrate: le fonti di finanziamento. Analisi delle uscite: le voci di spesa. Le risorse dei candidati: analisi di alcuni rendiconti significativi. Soldi e candidati politici: verso un modello unico di campagna elettorale

STUDI SUL MECCANISMO DEL PROCESSO SECRETORIO IN GRANULOCITI UMANI

2001/2002XIV Ciclo1974Versione digitalizzata della tesi di dottorato cartacea

The Distant Horizon: investigating the relationship between social sciences academic research and game development

Research in the social sciences devotes a great amount of attention to investigating the impact of video games on the individual and on society. However, results generated by this research often fail to inform game development. The present study investigated the outreach of research conducted by the academic community by interviewing 30 game developers and 14 researchers, highlighting critical aspects in the relationship between game research and game industry. Specifically, we found that the difference in priorities, speed cycles, and dissemination practices between these two contexts hinder communication. Subsequently, we carried out a focus group for a set of developers and researchers (N=6) with the aim of eliciting recommendation for improving communication between academics and developers. Among the recommendations to emerge were calls to diversify dissemination channels, promote joint conferences and develop research-production partnerships. It was felt such measures could strengthen the influence of research results outside the academic community

Temperature conditions in the Argentine chub mackerel (Scomber japonicus) fishing ground: Implications for fishery management

We describe the seasonal migrations of Argentine chub mackerel (Scomber japonicus) into the fishing ground in relation to sea surface temperature conditions and analyse the temperature evolution during the fishing season on the basis of 1955-97 time-series. The upper temperature limit for the presence of schools was around 19°C. At higher values, most schools leave coastal waters (< 50 m) for the shelf. An inverse relationship was observed between catches per unit of effort (CPUE) of the inshore fishery and sea surface temperature. The highest standardized CPUE values corresponded to temperatures lower than 19°C. Above this temperature, the probability of obtaining a standardized CPUE higher than 1 was extremely low, and the standard deviations were minimal. The economic benefit from catches was also analysed through the different months of the fishing season. It was found that the mean benefit corresponding to temperatures lower than 19°C exceeded approximately 15 times that obtained at higher temperatures. A simple fishing strategy was proposed to the commercial fleet in order to improve the economic benefit of the catches. The migratory pattern followed by mackerel during the spawning period was also analysed in relationship to other environmental factors like food availability. Zooplankton composition, size structure and abundance in coastal and shelf waters are described, and their implications for feeding ecology of larvae and adults of the species are discussed.Fil: Perrotta, Ricardo Geronimo. Instituto Nacional de Investigaciones y Desarrollo Pesquero; ArgentinaFil: Viñas, Maria Delia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Subsede Instituto Nacional de Investigación y Desarrollo Pesquero; ArgentinaFil: Hernández, Daniel R.. Instituto Nacional de Investigaciones y Desarrollo Pesquero; ArgentinaFil: Tringali, Leonardo. Instituto Nacional de Investigaciones y Desarrollo Pesquero; Argentin

Genetic study of Murgese horse from genealogical data and microsatellites

The black or rarely roan Murgese is a mesomorph horse, mainly reared in Apulia, recently selected for the saddle. Thefirst official registry of Murgese was established in 1926. All the existing Murgese horses can be traced back to a smallnumber of founders (46 founder mares and 9 stallions). This work aims to monitor the genetic structure of the actualpopulation by analysing the available genealogical information from 2708 animals and a data-set containing 563 typingrecords of twelve microsatellites. Inbreeding coefficients were estimated for the whole sample and for the animals bornfrom 1992 to 1999. A total of 23 generations were found. The average inbreeding coefficient was 0.0165 for the last threegenerations, whereas inbreeding was below 2% in animals born in the 92-99 period. The contribution of founders wasunbalanced. The overall FIS coefficient estimation was 0.025 and suggests that mating is generally at random in the population.However, some statistics obtained from this study, i.e. the inbreeding coefficient higher than 0.015 in the 70 animalsof the 19th, 20th, and 21st generations, should induce breeders to more attention in planning mating

Graphene stimulates the nucleation and growth rate of NaCl crystals from hypersaline solution via membrane crystallization

Advanced graphene engineered membranes designed for sustainable crystallization of high-quality crystals from hypersaline water