Scoring the sum of correlated results in analytical proficiency testing

In proficiency tests the participants' results are usually converted into scores. In some schemes the participants are required to report the sum of the concentrations of a number of analytes and this total also is converted into a score. In such instances the scoring procedure for the total should be mathematically consistent with that for the separate analytes. When these analytes are determined from a single test portion, however, the errors in the results from a participant are likely to be correlated because some stages of the analysis are common to all of the analytes. For a consistent outcome, the scoring method must take account of such correlation

The Endgame: America’s Exit from Syria

Ever since the 2011 Arab Spring protests in Syria fueled civil war costing nearly half a million lives to date, the US response has been cautious indecision. Syria became a proxy war with Russia, Iran, Hezbollah, the Turks, ISIS, the Kurds, and the local Syrian opposition all competing to support or oust Assad. All but the Kurds and select Syrian resistance groups opposed America. With billions spent on questionable war efforts in Afghanistan and Iraq, President Obama, the American public, and most of the military establishment were leery of direct US involvement in Syria. Apart from supporting the fight against ISIS and half-hearted demands that Bashar al Assad step aside as leader of Syria, neither President Obama nor President Trump have committed US troops to achieving anything more comprehensive. Optimally, the US should encourage multilateral efforts to negotiate Assad’s removal from office with Russia, address Turkish fears of Kurdish independence, or pressure Iran and Hezbollah to withdraw from Syria. Under present circumstances facing US policymakers, such optimizing is illusory. Whatever the limits and possibilities of USFP in the region today, it is clear that America needs a tactical retreat to reconsolidate its power and purpose to fight its Russian and Iranian foes another day when the direct stakes for American interests are higher

Has Government Tax Policy in Greece Led to a Large Shadow Economy?

This capstone investigates the impact that tax policy has on the shadow economy in Greece. Greece has one of the largest shadow economies in the world and the largest in the European Union, with tax evasion being one of the main drivers. While previous research has provided measures of the shadow economy, none matches the shadow economy estimations with policies, laws, and agencies enacted by the government, specifically over the period in time of 1990-2012. This study contributes to the literature by connecting the policies implemented by the government with the size of the shadow economy in Greece, along with providing a new model based on prior versions of the currency-demand model. The study concludes by considering, a piece of cultural analysis to help explain why the people of Greece are so prone to evade taxes and enter the shadow economy. Research of Dr. Geert Hofstede’s work on cultural dimensions shows that Greeks have high levels of power-distance, collectivism, and uncertainty avoidance, all which can be used to explain why they are susceptible to keep evading taxes. Using an adaption of the currency demand model, the regression results show that the shadow economy increased with 1) an increase in the amount of people that are self-employed 2) decreases to the middle income tax rate 3) and with increases in the lowest income tax rate. These results suggest that the tax system needs a combination of stronger oversight and penalties because of the extremely high levels of uncertainty avoidance that Greeks possess. The results also show that revenue can be captured by raising the middle income tax rate, and that raising the tax rate on the lowest bracket will tend to force those people into the shadow economy. This study provides useful conclusions on the Greek shadow economy from both an economic perspective and a sociological perspectiv

A Murine Model of Shigellosis: Pathophysiology of Shiga Toxin-2 Secreting Citrobacter Rodentium

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