Damping characterization in large structures

This research project has as its main goal the development of methods for selecting the damping characteristics of components of a large structure or multibody system, in such a way as to produce some desired system damping characteristics. The main need for such an analytical device is in the simulation of the dynamics of multibody systems consisting, at least partially, of flexible components. The reason for this need is that all existing simulation codes for multibody systems require component-by-component characterization of complex systems, whereas requirements (including damping) often appear at the overall system level. The main goal was met in large part by the development of a method that will in fact synthesize component damping matrices from a given system damping matrix. The restrictions to the method are that the desired system damping matrix must be diagonal (which is almost always the case) and that interbody connections must be by simple hinges. In addition to the technical outcome, this project contributed positively to the educational and research infrastructure of Tuskegee University - a Historically Black Institution

Effectiveness of large booms as nutation dampers for spin stabilized spacecraft

The issue of using long slender booms as pendulous nutation damping devices on spinning aircraft is discussed. Motivation comes from experience with the Galileo Spacecraft, whose magnetometer boom also serves as a passive nutation damper for the spacecraft. Performance analysis of a spacecraft system equipped with such systems are relatively insensitive to changes in the damping constant of the device. However, the size and arrangement of such a damper raises important questions concerning spacecraft stability in general

Effect of Know-What-Learn Strategy on Senior Secondary School Students\u27 Academic Achievement in Reading Comprehension

This study investigated the effect of Know-What-Learn (KWL) on senior secondary school students\u27 academic achievement in reading comprehension. The study adopted a quasi-experimental design - specifically a pretest posttest non-equivalent control group design. Two research questions and one hypothesis guided the study. The sample was made up of 80 students. The instruments for this study were 25 items multiple-choice reading comprehension achievement test. Mean and standard deviation were used to answer the three research questions while ANCOVA was used to test the hypothesis at p \u3c 0.05. The result revealed that students taught using KWL had a higher academic achievement gain score than those taught using lecture method. Based on the findings, some recommendations were made which include that English language teachers should be trained and versed on how best to develop and use KWL strategy so as to achieve their objectives of enhancing academic achievement in Reading comprehension

Can Owner-Manager Characteristics Signal Small Business Loan Default Propensity?

The potential of small businesses is inhibited by a cocktail of problems of which inaccessibility to finance is pre-eminent. This problem is linked to the lenders’ risk estimation, often based on financial indicators which small businesses are not adept at using to signal their performance ability. This situation, especially in South Africa, with a history of a people who were previously disadvantaged does not aid the development of small businesses that may well be the antidote for overcoming the strain of poverty and unemployment in the country. This study stems from the human capital theory and investigated possible relationships between owner-manager characteristics and loan default propensity. The aim being to unveil non-financial variables, associated with the owner-manager which could be relied upon by lenders’ to estimate the loan default propensity of the small business borrower. Primary data collected in South Africa were empirically analysed for possible associations between owner-manager characteristics and loan default propensity. Results revealed business size-dependent differences in the association between certain ownermanager characteristics and business loan default propensity. The implication of this for all stakeholders is that considerations for small business lending should be sensitive to business size

A Multi-Gene Genetic Programming Application for Predicting Students Failure at School

Several efforts to predict student failure rate (SFR) at school accurately still remains a core problem area faced by many in the educational sector. The procedure for forecasting SFR are rigid and most often times require data scaling or conversion into binary form such as is the case of the logistic model which may lead to lose of information and effect size attenuation. Also, the high number of factors, incomplete and unbalanced dataset, and black boxing issues as in Artificial Neural Networks and Fuzzy logic systems exposes the need for more efficient tools. Currently the application of Genetic Programming (GP) holds great promises and has produced tremendous positive results in different sectors. In this regard, this study developed GPSFARPS, a software application to provide a robust solution to the prediction of SFR using an evolutionary algorithm known as multi-gene genetic programming. The approach is validated by feeding a testing data set to the evolved GP models. Result obtained from GPSFARPS simulations show its unique ability to evolve a suitable failure rate expression with a fast convergence at 30 generations from a maximum specified generation of 500. The multi-gene system was also able to minimize the evolved model expression and accurately predict student failure rate using a subset of the original expressionComment: 14 pages, 9 figures, Journal paper. arXiv admin note: text overlap with arXiv:1403.0623 by other author

SISTEM INFORMASI PEMINJAMAN SENJATA DI BAGIAN INVENTORY PERSENJATAAN INFANTRI YONIF 752 TNI AD

Sistem Informasi Inventori ini dibuat dengan tujuan agar dapat mengetahui alur kerja dari sistem informasi peminjaman senjata di bagian inventori persenjataan infantry yonif 752 dan bagaimana cara pengerjaannya. Dokumen ini digunakan user untuk menerapkan semua kenutuhannya. User yang dimaksudkan di sini adalah admin atau petugas. Aplikasi ini di buat khusus untuk petugas atau admin yang bertugas menjaga gudang persenjataan yonif 752 Sorong. Mendeskripsikan kegiatan dan alur kerja yang terjadi dalam penggunaan Sistem Aplikasi Peminjaman Senjata di bagian inventory ini, sistem akan membuat aplikasi yang diharapkan serta kebutuhan dalam pembuatan aplikasi dan perkembangan lanjut aplikasi untuk dimasa yang mendatang. Dokumen ini digunakan user untuk menerapkan semua kebutuhannya dan digunakan pengembang sebagai dasar untuk melakukan perancangan serta menjadi acuan saat dilakukan pegujian terhadap aplikasi tersebut. User yang dimaksudkan disini merupakan Admin yang berhubungan dan menggunakan dokumen ini

A 2010-es Sanghaji Világkiállítás magyar pavilonja

A Kínai Népköztársaság meghívását elfogad - va, 2006-ban határozott kormányunk a Magyar Köztársaság hivatalos állami szintű részvételéről a 2010. évi Sanghaji Világkiállításon, mely 2010. má - jus 1. és október 31. között került megrendezésre. A nemzeti pavilon tervezésére vonatkozó építészeti tervpályázatot, melyet Lévai Tamás építész nyert meg, 2008-ban írták ki. A nyertes pályamű nagy sikerű elődeihez, az 1992-es sevillai Makovecz-féle „hét toronyhoz” ill. a 2000-es hannoveri, Vadász György által jegyzett „hajóhoz” hasonlóan fő építé - szeti elemeként a fát használja