Accuracy of facial soft tissue thickness measurements in personal computer-based multiplanar reconstructed computed tomographic images

The purpose of this study was to determine the precision and accuracy of facial soft tissue measurement using personal computer (PC)-based multiplanar reconstructed (MPR) computed tomography (CT) images and to evaluate the effect of the various CT scanning protocols on the facial soft tissue thickness measurement. Thirteen different CT imaging protocols were used to image a cadaver head. MPR reformations and three-dimensional (3D) reconstructions viewed on a laptop PC were used to make measurements at six specific sites on each set of images. These measurements were compared to physical measurements at the same sites. Increasing the slice thickness resulted in decreased image quality. Within the same slice thickness, increasing the pitch ratio in the spiral mode, resulted in decreasing image quality. The image quality of conventional CT scanning was relatively poorer than that of the spiral CT scanning. However, the mean deviation from the physical measurement was within 0.43 mm in every instance. This mean deviation was quite small and clinically acceptable for measuring the soft tissue thickness of the facial area. PC-based MPR CT images of the face using routine scanning CT protocols can be used to accurately measure soft tissue thickness in the facial region. However, for more fine and accurate data collection, scanning protocols with slice thicknesses less than 5mm, and a spiral/helical mode pitch less than 2:1 are recommended.     

Staff growth in international organizations: A principal-agent problem? An empirical analysis

The analysis covers 27 international organizations in the years 1950–2001. From the first to the last year, staff increased at a compound average rate of 3.2% per annum, while the number of member states rose by only 2.5%. The pooled analysis of 817 observations (including task proxies and organization dummies) reveals that (i) the elasticity of staff to membership is much larger than unity (1.36), (ii) United Nations organizations have significantly more staff, (iii) international organizations in the United States and Switzerland have significantly less staff, (iv) heterogeneity in terms of per capita income limits the size of an international organization and that (v) its staff is larger if its membership comprises many industrial or (former) communist countries. In a reduced sample, the financing share of the largest contributor in combination with the party or programmatic orientation of its government has a significantly negative effect on staff because the size of the largest financing share determines the incentive to monitor. U.S. exit from an international organization reduces its staff significantly. Most of these results depend on the condition that the non-stationary component of staff size is not taken account of by time dummies or trends.     

A Public Choice Perspective of IMF and World Bank Lending and Conditionality

The paper explains IMF and World Banklending and conditionality stressingchanges in relative bargaining power ofdifferent stakeholders over time. Itapplies public choice theory to explain theinterests of the institutions' memberstates, its borrowers and staffs as well asprivate actors attaching their money to theIFIs' programs. Using panel data for 43countries between 1987–99 it is shown thatthe number of Fund conditions seems to beinfluenced by contemporaneous World Bankactivity and ``bad'' policies.     

Democracy and Capitalism: Collective Action Theory and Structural Analysis

The problem which I address in this paper consists in the connection between democracy and capitalism. I begin by specifying a model of actor theory which indicates a number of methods of achieving co-operation between actors I then review different structural theories of democracy which link up with these methods. Against this background I then seek to clarify—and to some extent evaluate—the arguments which different researchers have adduced in support of the thesis that capitalism is a prerequisite for democracy.     

Vital animal predation of the genital region caused by a mongrel dog

A 79-year-old man, who was in a helpless situation due to cardiac decompensation, suffered dog bite injuries on the left thigh and in the genital region while still alive. Two extensive soft-tissue defects with contused and bruised wound edges were surrounded by multiple slit-like skin lesions. The outer genitals were almost completely missing. Because of surgical emergency treatment, molecular biological investigations were no longer possible. Therefore, the cause of the bite injuries had to be determined solely on the basis of the documented morphology of the wounds.     

Are inequalities between us and the dead intergenerationally unjust?

Abstract

This paper looks at whether inequalities between us and the past can be unjust. We show why they can be pro tanto unjust, both when the now dead generation transferred more than it had inherited to its descendants (savings) and when it transferred less (dis-savings). However, we also argue that characterising an intergenerational inequality as unjust neither commits us to the claim that it merely involves bad luck, nor implies that it is the current generation that acted unjustly towards the previous one, nor entails that (members of) the dead generation acted unjustly towards us. The paper ends with a discussion on whether we should do something about such unjust inequalities with the past.     

The Alma Mater effect: Does foreign education of political leaders influence UNGA voting?

Public Choice - We study whether national leaders’ foreign education influences their voting behavior at the United Nations General Assembly. We hypothesize that...     

Greasing the wheels? The impact of regulations and corruption on firm entry

This paper investigates the question of whether corruption might ‘grease the wheels’ of an economy. We investigate whether and to what extent the impact of regulations on entrepreneurship is dependent on corruption. We first test whether regulations robustly deter firm entry into markets. Our results show that the existence of a larger number of procedures required to start a business, as well as larger minimum capital requirements are detrimental to entrepreneurship. Second, we test whether corruption reduces the negative impact of regulations on entrepreneurship in highly regulated economies. Our empirical analysis, covering a maximum of 43 countries over the 2003–2005 period, shows that corruption facilitates firm entry in highly regulated economies. For example, the ‘greasing’ effect of corruption kicks in at around 50 days required to start a new business. Our results thus provide support for the ‘grease the wheels’ hypothesis.