Example Implementation of A Simple Algorithm

Example Implementation of A Simple Algorithm to Calculate S(n), The Smarandache Function

Troubling children's families: who's troubled and why? Approaches to inter-cultural dialogue

This article draws on multi-disciplinary perspectives to consider the need and the possibilities for inter-cultural dialogue concerning families that may be seen by some to be ‘troubling’. Starting from the premise that ‘troubles’ are a ‘normal’ part of children’s family lives, we consider the boundary between ‘normal’ troubles and troubles that are troubling (whether to family members or others). Such troubling families potentially indicate an intervention to prevent harm to less powerful family members (notably children). On what basis can such decisions be made in children’s family lives, how can this question be answered across diverse cultural contexts, and are all answers inevitably subject to uncertainty? Such questions arguably re-frame and broaden existing debates about ‘child maltreatment’ across diverse cultural contexts. Beyond recognizing power dynamics, material inequalities, and historical and contemporary colonialism, we argue that attempts to answer the question on an empirical basis risk a form of neo-colonialism, since values inevitably permeate research and knowledge claims. We briefly exemplify such difficulties, examining psychological studies of childrearing in China, and the application of neuroscience to early childhood interventions in the UK. Turning to issues of values and moral relativism, we also question the possibility of an objective moral standard that avoids cultural imperialism, but ask whether cultural relativism is the only alternative position available. Here we briefly explore other possibilities in the space between ‘facile’ universalism and ‘lazy’ relativism (Jullien, 2008/2014). Such approaches bring into focus core philosophical and cultural questions about the possibilities for ‘happiness’, and for what it means to be a ‘person’, living in the social world. Throughout, we centralize theoretical and conceptual issues, drawing on the work of Jullien (2008/2014) to recognize the immense complexities inter-cultural dialogue entails in terms of language and communication

Notes on the design of latticed columns subject to lateral loads

No rational column formula has yet been developed which gives results which are sufficiently precise for the design of airplane members, and consequently it is necessary to fall back upon experimental testing. In order to derive the maximum benefit from experiments, however, it is necessary that the experiments be guided by theory. It is the object here to modify existing formulae that may be obtained with a minimum number of tests. A discussion is given that is limited to the case of a simple column supported at both ends and subjected to uniformly distributed loads perpendicular to its axis and to end loads either axially or eccentrically applied. Discussed here are forces in the bracing of latticed columns, the application of theory to practical columns, loads in lattice members, and the strength of individual lattices

Matrix management for aerospace 2000

The martix management approach to program management is an organized effort for attaining program objectives by defining and structuring all elements so as to form a single system whose parts are united by interaction. The objective of the systems approach is uncompromisingly complete coverage of the program management endeavor. Starting with an analysis of the functions necessary to carry out a given program, a model must be defined; a matrix of responsibility assignment must be prepared; and each operational process must be examined to establish how it is to be carried out and how it relates to all other processes

Numerical and flight simulator test of the flight deterioration concept

Manned flight simulator response to theoretical wind shear profiles was studied in an effort to calibrate fixed-stick and pilot-in-the-loop numerical models of jet transport aircraft on approach to landing. Results of the study indicate that both fixed-stick and pilot-in-the-loop models overpredict the deleterious effects of aircraft approaches when compared to pilot performance in the manned simulator. Although the pilot-in-the-loop model does a better job than does the fixed-stick model, the study suggests that the pilot-in-the-loop model is suitable for use in meteorological predictions of adverse low-level wind shear along approach and departure courses to identify situations in which pilots may find difficulty. The model should not be used to predict the success or failure of a specific aircraft. It is suggested that the pilot model be used as part of a ground-based Doppler radar low-level wind shear detection and warning system

Quantifying mixing using magnetic resonance imaging.

Mixing is a unit operation that combines two or more components into a homogeneous mixture. This work involves mixing two viscous liquid streams using an in-line static mixer. The mixer is a split-and-recombine design that employs shear and extensional flow to increase the interfacial contact between the components. A prototype split-and-recombine (SAR) mixer was constructed by aligning a series of thin laser-cut Poly (methyl methacrylate) (PMMA) plates held in place in a PVC pipe. Mixing in this device is illustrated in the photograph in Fig. 1. Red dye was added to a portion of the test fluid and used as the minor component being mixed into the major (undyed) component. At the inlet of the mixer, the injected layer of tracer fluid is split into two layers as it flows through the mixing section. On each subsequent mixing section, the number of horizontal layers is duplicated. Ultimately, the single stream of dye is uniformly dispersed throughout the cross section of the device. Using a non-Newtonian test fluid of 0.2% Carbopol and a doped tracer fluid of similar composition, mixing in the unit is visualized using magnetic resonance imaging (MRI). MRI is a very powerful experimental probe of molecular chemical and physical environment as well as sample structure on the length scales from microns to centimeters. This sensitivity has resulted in broad application of these techniques to characterize physical, chemical and/or biological properties of materials ranging from humans to foods to porous media (1, 2). The equipment and conditions used here are suitable for imaging liquids containing substantial amounts of NMR mobile (1)H such as ordinary water and organic liquids including oils. Traditionally MRI has utilized super conducting magnets which are not suitable for industrial environments and not portable within a laboratory (Fig. 2). Recent advances in magnet technology have permitted the construction of large volume industrially compatible magnets suitable for imaging process flows. Here, MRI provides spatially resolved component concentrations at different axial locations during the mixing process. This work documents real-time mixing of highly viscous fluids via distributive mixing with an application to personal care products

Engineering in the 21st century

Reasonable evolutionary trends in federal outlays for aerospace research and development predict a continuing decline in real resources (1970 dollars) until the mid eighties, and a growth thereafter to the 1970 level by 2000, still well below the 1966 peak. Employment levels will parallel this trend with no shortage of available personnel foreseen. These trends characterize a maturing industry. Shifts in outlook toward the economic use of resources, rather than minimum risk at any cost, and toward missions aligned with societal needs and broad national goals will accompany these trends. These shifts in outlook will arise in part in academia, and will, in turn, influence engineering education. By 2000, space technology will have achieved major advances in the management of information, in space transportation, in space structures, and in energy. The economics of space systems must be the primary consideration if the space program foreseen for the 21st century is to become an actuality