Does Foreign Aid Promote Development? A Study Of The Effects Of Foreign Aid On Development In Sub-saharan Africa

Foreign aid aims to improve economic conditions and quality of life in developing countries. The literature on the efficacy of foreign aid to date has been inconclusive; yet there is some evidence that institutional factors may condition the relationship between aid and development. This research focuses on the effects of foreign aid on development, taking into consideration the effects of political institutional factors as intervening in the connection between aid and development. Specifically, this study considers the effects of democracy (political rights and civil liberties) and level of corruption on the relationship between aid and development in sub-Saharan Africa. Development is determined by the Human Development Index, which takes into account gross national income, life expectancy, and education level. My findings indicate that aid is ineffective at promoting development in sub-Saharan Africa. Additionally, it is found that democracy, as determined by level of political freedom, is positively associated to development in aid recipient countries. HIV prevalence rate, the location of the country relative to the coastline, and percent of arable land were found to be significant factors affecting development. The level of corruption and political stability do not have a significant effect on development. The study is conducted using a cross-national, longitudinal, statistical model. The impact of foreign aid on development is examined for 45 countries over a fourteen-year period, from 1995 to 2009. The results of the study show that foreign aid has a negative effect on development, yet development is affected by level of democracy, geographical location, percent of arable land, and HIV prevalence rate. Development is higher in countries located on the coastline, with a higher percentage of arable land, a higher level of democracy, and a higher rate of HIV

Assessing Cognitive Flexibility with the ID/ED Set-Shifting Task in Rats Modeling Depression

Previous research has shown cognitive capabilities either increase or decrease risk factors of depression, there is a gap in research on the effects depression has on cognitive flexibility. Cognitive flexibility controls the appropriate way to respond to changing thoughts, behaviors, and environmental signals. Higher performing cognitive flexibility is associated with positive life outcomes (Dajani & Uddin, 2015). Therefore, there is a need to further understand the impacts depression can have on cognitive flexibility. The intra-dimensional extra-dimensional (ID/ED) set-shifting task is utilized in the present study to measure cognitive flexibility in rats modeling depression due to unlimited sucrose consumption in adolescence. The experimental group of rats was given unlimited access to 5% sucrose water and regular drinking water for three weeks prior to testing trials, while the control group was given access to only regular drinking water. Trials were conducted over three weeks. The rats were first habituated to the testing chamber with ceramic bowls of felt digging media versus bead digging media. They were next trained in a simple discrimination task to learn to correctly identify the bowl with the reward based on digging media (felt). After the rats met the required criterion of six consecutive correct trails, they moved on to compound discrimination trials in which an irrelevant odor was paired with media (lavender with felt, clove with beads), but the reward remained in the relevant media (felt). Upon the rats learning the compound discrimination, a reversal was performed where the previously incorrect digging media (bead) was rewarded. Finally, the digging media and odors were changed, and the rats were trained to continue attending to the digging media (ID shift) and lastly trained to attend to the odor (ED shift). Trials to criterion and times to complete were measured and recorded for all trials. We hypothesize that the experimental group of rats modeling depression will exhibit less cognitive flexibility than the control rats, with a higher number of trials to criterion and longer trial times for the ID and ED shifts. Dajani, D. R., & Uddin, L. Q. (2015, September 3). Demystifying cognitive flexibility: Implications for clinical and Developmental Neuroscience. Trends in Neurosciences. Retrieved October 14, 2022, from https://www.sciencedirect.com/science/article/pii/S016622361500154X?casa_token=DgzMx3POVB4AAAAA%3A0lKlnTiKzMoJjvNHKso71ya7-SUhEHfhdVW6oLb349_3W52KE_rfDxf4WJxjtsc-h4MjxuM1i

The Distance of the Gamma-ray Binary 1FGL J1018.6-5856

The recently discovered gamma-ray binary 1FGL J1018.6-5856 has a proposed optical/near-infrared (OIR) counterpart 2MASS 10185560-5856459. We present Stromgren photometry of this star to investigate its photometric variability and measure the reddening and distance to the system. We find that the gamma-ray binary has E(B-V) = 1.34 +/- 0.04 and d = 5.4^+4.6_-2.1 kpc. While E(B-V) is consistent with X-ray observations of the neutral hydrogen column density, the distance is somewhat closer than some previous authors have suggested.Comment: Accepted to PAS

Prospectus, October 12, 2016

PARKLAND OFFERS DEPRESSION SCREENINGS; Meet the Staff: Kelly Youngblood; Seamus Reilly; Vice President for Institutional Advancements, Irish singer; Survey, Mapping Career Fair set for Oct. 20; Clown hysteria spreading, Illinois not immune; Pennies for Pumpkins 2016; Parkland police stress safety for campus; Prospectus editor visits Bloomington Zoo; Notice to faculty, students regarding final exams; Prospectus staff attends Illinois Community College Journalism Association Conferencehttps://spark.parkland.edu/prospectus_2016/1024/thumbnail.jp

Investigation into the utility of flying foxes as bioindicators for environmental metal pollution reveals evidence of diminished lead but significant cadmium exposure

Due to their large range across diverse habitats, flying-foxes are potential bioindicator species for environmental metal exposure. To test this hypothesis, blood spots, urine, fur, liver and kidney samples were collected from grey-headed flying-foxes (Pteropus poliocephalus) and black flying-foxes (P. alecto) from the Sydney basin, Australia. Concentrations of arsenic, cadmium, copper, lead, mercury and zinc and 11 other trace metals were determined using inductively coupled plasma mass spectrometry. As predicted, kidney and fur lead concentrations were lower compared to concentrations found in flying-foxes in the early 1990’s, due to reduced environmental lead emissions. Tissue cadmium concentrations in flying-foxes were higher compared to previous studies of flying-foxes and other bat species, suggesting that flying-foxes were exposed to unrecognized cadmium sources. Identification of these sources should be a focus of future research. Urine concentrations of arsenic, cadmium, mercury, and lead were proportional to kidney concentrations. Given that urine can be collected from flying-foxes without handling, this demonstrates that many flying-foxes can be assessed for metal exposure with relative ease. The analysis of blood spots was not viable because of variable metal concentrations in the filter paper used. Fur concentrations of metals correlated poorly with tissue concentrations at the low levels of metals found in this study, but fur could still be a useful sample if flying-foxes are exposed to high levels of metals. Lastly, heat inactivation had minimal impact on metal concentrations in kidney and liver samples and should be considered as a tool to protect personnel working with biohazardous samples

Evidence of chronic cadmium exposure identified in the critically endangered Christmas Island flying-fox (Pteropus natalis)

The Christmas Island flying-fox (Pteropus natalis) is the last native mammal on Christmas Island and its population is in decline. Phosphate mining occurs across much of the eastern side of Christmas Island. The phosphate deposits are naturally rich in cadmium, and potentially other metals, which may be threatening the Christmas Island flying-fox population. To test this, concentrations of metals (cadmium, copper, iron, mercury, lead, and zinc) were measured in fur and urine collected from Christmas Island flying-foxes and interpreted concurrently with urinalysis and serum biochemistry data. In addition, metal concentrations in liver and kidney samples from two Christmas Island flying-foxes and associated histological findings from one of these individuals are reported. Fur cadmium concentrations were significantly higher in the Christmas Island flying-fox compared to concentrations found in flying-foxes in mainland Australia. Additionally, 30% of Christmas Island flying-foxes had urine cadmium concentrations exceeding maximum concentrations previously reported in flying-foxes in mainland Australia. Glucosuria and proteinuria were identified in two Christmas Island flying-foxes, suggestive of renal dysfunction. In one aged flying-fox, kidney cadmium concentrations were four-fold higher than toxic thresholds reported for domestic mammals. Microscopic evaluation of this individual identified bone lesions consistent with those described in laboratory animals with chronic cadmium poisoning. These results suggest that Christmas Island flying-foxes are being exposed to cadmium and identification of these sources is recommended as a focus of future research. Unexpectedly, urine iron concentrations in Christmas Island flying-foxes were higher compared to previous studies of Australian mainland flying-foxes, which suggests that urinary excretion of iron may be an important aspect of iron homeostasis in this species whose diet is iron rich

Rotation and Macroturbulence in Metal-Poor Field Red Giant and Red Horizontal Branch Stars

We report the results for rotational velocities, Vrot sin i, and macroturbulence dispersions, ζRT, for 12 metal-poor field red giant branch (RGB) stars and 7 metal-poor field red horizontal branch (RHB) stars. The results are based on Fourier transform

Delayed gratification in New Caledonian crows and young children: influence of reward type and visibility

Funder: FP7 Ideas: European Research Council; doi: http://dx.doi.org/10.13039/100011199; Grant(s): 3399933Funder: Royal Society of New Zealand Rutherford Discovery FellowshipAbstract: Self-control underlies cognitive abilities such as decision making and future planning. Delay of gratification is a measure of self-control and involves obtaining a more valuable outcome in the future by tolerating a delay or investing a greater effort in the present. Contextual issues, such as reward visibility and type, may influence delayed gratification performance, although there has been limited comparative investigation between humans and other animals, particularly non-primate species. Here, we adapted an automated ‘rotating tray’ paradigm used previously with capuchin monkeys to test for delay of gratification ability that requires little pre-test training, where the subject must forgo an immediate, less preferred reward for a delayed, more preferred one. We tested New Caledonian crows and 3–5-year-old human children. We manipulated reward types to differ in quality or quantity (Experiments 1 and 2) as well as visibility (Experiment 2). In Experiments 1 and 2, both species performed better when the rewards varied in quality as opposed to quantity, though performed above chance in both conditions. In Experiment 1, both crows and children were able to delay gratification when both rewards were visible. In Experiment 2, 5-year-old children outperformed 3- and 4-year olds, though overall children still performed well, while the crows struggled when reward visibility was manipulated, a result which may relate to difficulties in tracking the experimenters’ hands during baiting. We discuss these findings in relation to the role of contextual issues on self-control when making species comparisons and investigating the mechanisms of self-control

Decision-making flexibility in New Caledonian crows, young children and adult humans in a multi-dimensional tool-use task.

The ability to make profitable decisions in natural foraging contexts may be influenced by an additional requirement of tool-use, due to increased levels of relational complexity and additional work-effort imposed by tool-use, compared with simply choosing between an immediate and delayed food item. We examined the flexibility for making the most profitable decisions in a multi-dimensional tool-use task, involving different apparatuses, tools and rewards of varying quality, in 3-5-year-old children, adult humans and tool-making New Caledonian crows (Corvus moneduloides). We also compared our results to previous studies on habitually tool-making orangutans (Pongo abelii) and non-tool-making Goffin's cockatoos (Cacatua goffiniana). Adult humans, cockatoos and crows, but not children and orangutans, did not select a tool when it was not necessary, which was the more profitable choice in this situation. Adult humans, orangutans and cockatoos, but not crows and children, were able to refrain from selecting non-functional tools. By contrast, the birds, but not the primates tested, struggled to attend to multiple variables-where two apparatuses, two tools and two reward qualities were presented simultaneously-without extended experience. These findings indicate: (1) in a similar manner to humans and orangutans, New Caledonian crows and Goffin's cockatoos can flexibly make profitable decisions in some decision-making tool-use tasks, though the birds may struggle when tasks become more complex; (2) children and orangutans may have a bias to use tools in situations where adults and other tool-making species do not

The Na 8200 Angstrom Doublet as an Age Indicator in Low-Mass Stars

We investigate the use of the gravity sensitive neutral sodium (NaI) doublet at 8183 Angstroms 8195 Angstroms (Na 8200 Angstrom doublet) as an age indicator for M dwarfs. We measured the Na doublet equivalent width (EW) in giants, old dwarfs, young dwarfs, and candidate members of the Beta Pic moving group using medium resolution spectra. Our Na 8200 Angstrom doublet EW analysis shows that the feature is useful as an approximate age indicator in M-type dwarfs with (V-K_s) >= 5.0, reliably distinguishing stars older and younger than 100 Myr. A simple derivation of the dependence of the Na EW on temperature and gravity supports the observational results. An analysis of the effects of metallicity show that this youth indicator is best used on samples with similar metallicity. The age estimation technique presented here becomes useful in a mass regime where traditional youth indicators are increasingly less reliable, is applicable to other alkali lines, and will help identify new-low mass members in other young clusters and associations.Comment: 26 pages, 8 figures, accepted to the Astronomical Journa