To experimentally verify a new test stand for investigating fatigue strength of plain bearing surface layer some biand three-metallic thin-walled bearing bushes have been tested. A lining of the bearing was made of CuPb30 alloy. PbIn7 overlay was employed for tree-layer bearings. Typical views of observed bearing surface fatigue failures are presented and analysed in the paper. The MWO test rig...

In this study, fuzzy logic was implemented to formulate the fuzziness of layer boundaries for a two-layered clay soil. A field of two-layered clay with fuzzy boundaries between layers was generated, and then the bearing capacity of strip footing on this field was calculated by the assumption of plane-strain conditions. The Mohr-Coulomb failure criterion was used and bearing capacity calculation...

in shallow foundations, the third bearing capacity factor, n, has been found to show a decreasing tendency with increasing the foundation size. it is supported by experimental observations and related mainly to stress level dependent nature of the soil. on the other hand, the bearing capacity is often obtained theoretically without consideration of the foundation vertical displacements. in thi...

Let (* ) u,, du + q(x, t) u = 0 in D x [0, T], where D c R3 is a bounded domain with a smooth boundary dD, T> d, d: =diam D, q(x, I) E C( [O, 2’1, L”(D)). Suppose that for every (**) ~I,+~=f(x, l)EC’(dDx [0, T]), the value u*,;,:= h(s, t) is known, where N is the outer normal to dD, u solves (* ) and ( ** ) and satisfies the initial conditions u = U, = 0 at I = 0. Then q(x, I) is uniquely deter...

Most of Africa is focused on alleviating poverty and starvation, so IT practice does not enjoy the prominence in Africa. However, developing the IT Industry, and ensuring that practitioners are professional, will provide an industry that can create wealth. After a brief discussion on what is meant by professionalism, this paper will explore the issues relating to IT in Africa, especially South ...

This article is a reflection on significant recent growth in engineering education programs devoted to service-learning, sustainable development, humanitarian engineering, and so on, which we group under the term “engineering to help” (ETH). ETH programs are touted for their ability to provide engineering students, mainly from wealthy nations, with an opportunity to practice small-scale enginee...

Informal rewards, also known as pats on the back, are shown to be extremely effective rewards in some settings, prompting some managers to declare them as more “valuable” to employees than monetary rewards. On the other hand, salary and benefits continue to be the main motivators used by firms, and are clearly not substitutable by pats on the back. We name this puzzling dichotomy “the pat on th...

IMPORTATION AS AN EXCLUSIVE RIGHT ¶1 Making, selling, or using a U.S.-patented product or process in a foreign country does not infringe the United States patent. United States law cannot govern in other countries, and the patentee’s remedy is therefore dependent on the laws of the relevant foreign country. But when the patented product (or the product of the patented process) is brought into t...