Parameter design considerations in precision engineering

Parameter design is an experimental design and analysis methodology for developing robust processes and products. Robustness implies insensitivity to noise disturbances. Subtle experimental realities, such as the joint effect of process knowledge and analysis methodology, may affect the effectiveness of parameter design in precision engineering; where the objective is to detect minute variation in product and process performance. In this thesis, approaches to statistical forced-noise design and analysis methodologies were investigated with respect to detecting performance variations. Given a low degree of process knowledge, Taguchi's methodology of signal-to-noise ratio analysis was found to be more suitable in detecting minute performance variations than the classical approach based on polynomial decomposition. Comparison of inner-array noise (IAN) and outer-array noise (OAN) structuring approaches showed that OAN is a more efficient design for precision engineering. ^

Raúl Castro's Government: Recent Economic Reforms and Some Political Considerations.

Four years after calling for structural and conceptual changes, Raúl Castro finally unveiled a roadmap of substantive economic reforms. Over the next 18 months, at least a million workers will be laid off from the bloated state sector. Alternative forms of earning a living – self-employment, cooperatives, leasing of land or physical space, among others – are being authorized as old constraints on these alternatives are rescinded. From the perspective of ordinary Cubans, these reforms – called an actualizaciόn, or an update of the economic model – were long overdue. Yet, in hindsight, the slow-paced process can be explained, not in terms of the need for time to “identify” Cuba’s economic problems which have been known for decades, but by Raúl Castro’s emphasis on la institucionalidad, the need to channel decision making through institutions. His brother left a chaotic state apparatus which first needed mending before an elite consensus on the reform package could be forged. Cuba is entering a situation without precedent: this package is likely to run its own course without the Comandante (Fidel Castro) stopping it. By 2015, Cuban society will probably look different than today, featuring unprecedented inequality and living standards that are on the rise.

The Experience of “Bottoming”: Considerations for Identity and Learning

Bottoms—Gay men who prefer to be penetrated, sexually—are more stigmatized than other gay men, and may develop and experience identities differently than other gay, bisexual, or heterosexual men. This paper explores intrinsic dispositions and extrinsic motivations that may lead bottoms to perform and embody psychosocial and sexual identities in intimate, interpersonal, and social contexts.