A comparison of the predictions of a finite element model and multiscale model for a rough MEMS electrical contact

Rough surface contact is difficult to model effectively due to multiple scales of detail that need to be considered. This work presents the results of a multiscale rough surface contact model in comparison to a finite element based deterministic model for the electrical contact of a MEMS microswitch. The real area of contact and electrical contact resistance are predicted and compared as a function of normal load. The results show good quantitative and qualitative correlation between the two methods. As expected, the contact area increases nominally linearly with load, while the contact resistance decreases with load. It is notable though that the contact pressure is up to 16% higher than the hardness (2.8 times yield strength), and could be even higher for other surfaces

"Fiddling in Euroland as the Global Meltdown Nears"

President Dimitri B. Papadimitriou and Senior Scholar L. Randall Wray argue that the common diagnosis of a "sovereign debt crisis" ignores the crucial role of rising private debt loads and the significance of current account imbalances within the eurozone. Profligate spending in the periphery is not at the root of the problem. Moreover, pushing austerity in the periphery while ignoring the imbalances within the eurozone is a recipe for deflationary disaster. The various rescue packages on offer for Greece will not ultimately solve the problem, say the authors, and a default is a very real possibility. If a new approach is not embraced, we are likely seeing the end of the European Monetary Union (EMU) as it currently stands. The consequences of a breakup would ripple throughout the EMU as well as the shaky US financial system, and could ultimately trigger the next global financial crisis.

"Minsky's Analysis of Financial Capitalism"

In this paper, the authors discuss Minsky's analysis of the evolution of one variety of capitalism--financial capitalism--which developed at the end of the nineteenth century and was the dominant form of capitalism in the developed countries after World War II. Minsky's approach, like those of Schumpeter and Veblen, emphasized the importance of market power in this stage of capitalism. According to Minsky, modern capitalism requires expensive and long-lived capital assets, which, in turn, necessitate financing of positions in these assets as well as market power in order to gain access to financial markets. It is the relation between finance and investment that creates instability in the modern capitalist economy. Financial capitalism emerged from World War II with an array of new institutions that made it stronger than ever before. As the economy evolved, it moved from this more successful form of financial capitalism to the fragile form of capitalism that exists today.

Minsky's Analysis of Financial Capitalism

In this paper, the authors discuss Minsky's analysis of the evolution of one variety of capitalism-financial capitalism-which developed at the end of the nineteenth century and was the dominant form of capitalism in the developed countries after World War II. Minsky's approach, like those of Schumpeter and Veblen, emphasized the importance of market power in this stage of capitalism. According to Minksy, modern capitalism requires expensive and long-lived capital assets, which, in turn, necessitate financing of positions in these assets as well as market power in order to gain access to financial markets. It is the relation between finance and investment that creates instability in the modern capitalist economy. Financial capitalism emerged from World War II with an array of new institutions that made it stronger than ever before. As the economy evolved, it moved from this more successful form of financial capitalism to the fragile form of capitalism that exists today.

"Does Social Security Need Saving? Providing for Retirees throughout the Twenty-first Century"

Projections of an impending crisis in financing Social Security depend on unduly pessimistic assumptions about basic demographic and economic variables. Moreover, even if the assumptions are accepted, the projected gap between Social Security revenues and expenditures would not constitute a "crisis" and could be eliminated with relatively simple adjustments when it occurs. The real issue regarding our ability to provide for retirees throughout the coming century is not the size of Social Security Trust Funds, but the size and distribution of the whole economic pie. When the issue is viewed in this light, it becomes clear that most proposals to "save" the system-locking away budget surpluses, investing the Trust Funds in the stock market, privatization, reduction of benefits-do not address the real problem of caring for future retirees. Solutions consistent with the true nature and scope of the problem lie not within the Social Security system itself but in the realm of a general fiscal policy aimed at ensuring the growth of the economy.

"Understanding Deflation: Treating the Disease, Not the Symptoms"

Deflation can be defined as a falling general price level utilizing one of the common price indices.the consumer price index; the GDP deflator or other, narrower indices as the wholesale price index; or an index of manufactured goods prices. Falling indices of output prices can be the result of several mechanisms: productivity increases, quality increases and hedonic imputations of prices, competition from low-cost producers, government policy influences, or depressed aggregate demand. Falling output prices, in turn, can have strong effects, especially on the ability to service debts fixed in nominal terms; depending on the level of indebtedness of households and firms, they can set off a classic Minsky-Fisher debt deflation spiral. In this paper, we argue that deflation can and usually does generate large economic and social costs, but it is more important to understand that deflation itself is a symptom of severe and chronic economic problems. This distinction becomes important for the design and implementation of economic policy.

"Fiscal Policy For the Coming Recession: Large Tax Cuts are Needed to Prevent a Hard Landing"

Growing government surpluses, a ballooning trade deficit, and the resulting growth in private sector debt have placed the U.S. economy in a precarious position. Papadimitriou and Wray agree with President George W. Bush that fiscal stimulus is necessary to reinvigorate the economy; in the current economic environment, monetary policy will not work. However, a tax cut that would adequately stave off a downturn needs to be substantially larger than that proposed by the president. Therefore, in addition to the president's proposal to cut marginal income tax rates, the authors include among their recommends a payroll tax reduction and an expansion of the EITC.