External Intervention and the Duration of Civil Wars

This paper examines the effect of external intervention on civil war duration from the years 1946-2002. Based on the logic that intervention causes a distortion of the bargaining process in civil wars, it is hypothesized that intervention leads to increased civil war duration. This hypothesis is tested using linear regression analysis, which finds a positive, significant relationship between intervention and civil war duration. Considered in the context of previous literature, it is concluded that in addition to the distorting effect intervention appears to have on the bargaining process, this result may have been informed by the presence of competitive intervention, rival intervention, and interventions by states with an independent agenda. This research provides further evidence of the conflict lengthening effect of intervention, while tracing a common explanation based in the bargaining model of war throughout the various perspectives in the literature

Active Resistors: The Women of Post-Revolution Iran

In this paper, I challenge the notion that Muslim or Middle Eastern women are passive acceptors of discrimination. After examining how Iranian women resisted governmental discrimination following the 1979 Iranian Revolution, I consider a number of factors that may have led to the reversal of some of these discriminatory policies in the 1990’s. How much of an effect did women’s demands for equality have on the government’s decisions? This question of effectiveness introduces a longtime debate between Islamic feminists, who advocate for working with the theocratic government and using Islam to frame their demands for equality, and secular feminists, who advocate for using legal and political systems to reach a similar goal. Following a critical evaluation of each approach, the question evolves into whether a radical or a resonant frame is more effective. After taking into account the masculinity and power complexes of government leaders, I suggest that a resonant approach is in a unique position to successfully manipulate the government, which could lead to the reversal of discriminatory policies. However, the women’s rights movement will be most powerful if the two sides put aside their differences and unite in the fight against discrimination

The Proximity-Based Effect of Terrorism on Countries\u27 Economies

In this paper, I explore the effect that proximity to terrorist-controlled areas has on countries’ economies. I posit that there exists a correlation between the aforementioned proximity and GDP growth rates, and hypothesize that the closer a country is to an area with high levels of terrorism, the more likely it is that its economy will be negatively affected. I begin by examining the nature of the correlation between terrorism and economic growth; following this, I explore the direct ways in which terrorism affects economic growth. Next, I delve into the recent economic history of countries around three areas: the Nigeria area, the Afghanistan-Pakistan area, and the Iraq-Syria area. From my examinations of the GDP growth rates of the countries around these areas, I find no uniform relationship between the countries’ proximity to their respective areas and their GDP growth rates. To help explain this apparent lack of correlation, I look at other factors that influence GDP growth rates and note that these factors may be overshadowing the effects of terrorism. I conclude that there is no uniform relationship between a country’s proximity to high levels of terrorism and its GDP; although terrorism can have effects on countries’ economies, those effects are often negligible compared to other economic factors

The main transition in the Pink membrane model: finite-size scaling and the influence of surface roughness

We consider the main transition in single-component membranes using computer simulations of the Pink model [D. Pink {\it et al.}, Biochemistry {\bf 19}, 349 (1980)]. We first show that the accepted parameters of the Pink model yield a main transition temperature that is systematically below experimental values. This resolves an issue that was first pointed out by Corvera and co-workers [Phys. Rev. E {\bf 47}, 696 (1993)]. In order to yield the correct transition temperature, the strength of the van der Waals coupling in the Pink model must be increased; by using finite-size scaling, a set of optimal values is proposed. We also provide finite-size scaling evidence that the Pink model belongs to the universality class of the two-dimensional Ising model. This finding holds irrespective of the number of conformational states. Finally, we address the main transition in the presence of quenched disorder, which may arise in situations where the membrane is deposited on a rough support. In this case, we observe a stable multi-domain structure of gel and fluid domains, and the absence of a sharp transition in the thermodynamic limit.Comment: submitted to PR

Black Gold in a Changing World: An examination of Saudi Arabia’s dependence on oil and the possibility of a solar energy transition

This paper examines Saudi Arabia’s dependence on oil, considering the profound effects that the resource has on the domestic, socioeconomic, and international affairs of the Kingdom. It is determined, after examining the economic and environmental factors that make it necessary, that Saudi Arabia must reduce its dependence on oil and diversify its economy, ideally by pursing solar energy. This conclusion is reached by considering Saudi Arabia’s domestic challenges, which include unemployment and rising domestic energy demand, as well as factors such as the price volatility of oil and changing global energy trends. A Saudi transition to solar power is determined to be both plausible and beneficial for the Kingdom, although not without its challenges. This paper also emphasizes the importance of the Kingdom to increase the role of the private sector and attract foreign investment, which is necessary for the diversification process. The current development plan, Vision 2030, is critically assessed as ambitious-looking but somewhat limited, and next steps are recommended for Saudi Arabia to take in order to lay a sound foundation for diversification. Finally, it is concluded that whether or not Saudi Arabia will actually go through with this process depends on the ability of oil to continue providing the Kingdom with power and money

Short operas for educational settings: a production guide

Thesis (DM) – Indiana University, Music, 202

Getting More from Pushing Less: Negative Specific Heat and Conductivity in Non-equilibrium Steady States

For students familiar with equilibrium statistical mechanics, the notion of a positive specific heat, being intimately related to the idea of stability, is both intuitively reasonable and mathematically provable. However, for system in non-equilibrium stationary states, coupled to more than one energy reservoir (e.g., thermal bath), negative specific heat is entirely possible. In this paper, we present a ``minimal'' system displaying this phenomenon. Being in contact with two thermal baths at different temperatures, the (internal) energy of this system may increase when a thermostat is turned down. In another context, a similar phenomenon is negative conductivity, where a current may increase by decreasing the drive (e.g., an external electric field). The counter-intuitive behavior in both processes may be described as `` getting more from pushing less.'' The crucial ingredients for this phenomenon and the elements needed for a ``minimal'' system are also presented.Comment: 14 pages, 3 figures, accepted for publication in American Journal of Physic

Waved albatrosses can navigate with strong magnets attached to their head

The foraging excursions of waved albatrosses Phoebastria irrorata during incubation are ideally suited for navigational studies because they navigate between their Galápagos breeding site and one specific foraging site in the upwelling zone of Peru along highly predictable, straight-line routes. We used satellite telemetry to follow free-flying albatrosses after manipulating magnetic orientation cues by attaching magnets to strategic places on the birds' heads. All experimental, sham-manipulated and control birds, were able to navigate back and forth from Galápagos to their normal foraging sites at the Peruvian coast over 1000 km away. Birds subjected to the three treatments did not differ in the routes flown or in the duration and speed of the trips. The interpretations and implications of this result depend on which of the current suggested magnetic sensory mechanisms is actually being used by the birds