Análise da aderência de práticas ágeis na cultura de startups de software: o mapeamento de práticas através do SEMAT Kernel.

Este trabalho analisa os principais métodos ágeis utilizados em empresas startup, como scrum, extreme programming, kanban e lean, isolando suas práticas e mapeando-as no Kernel do SEMAT para escolher os elementos essenciais da engenharia de software que estão relacionados a cada prática de forma independente. Foram identificadas 34 práticas que foram reduzidas a um conjunto de 26 pelas similaridades. Um questionário foi desenvolvido e aplicado no ambiente de startups de software para a avaliação do grau de utilização de cada determinada prática. Através das respostas obtidas foi possível a identificação de um subconjunto de práticas com utilização acima de 60% onde todos os elementos essenciais da engenharia de software são atendidos, formando um conjunto mínimo de práticas capazes de sustentar este tipo específico de ambiente.

An integral security kernel

As the user base of the Internet has grown tremendously, the need for secure services has increased accordingly. Most secure protocols, in digital business and other fields, use a combination of symmetric and asymmetric cryptography, random generators and hash functions in order to achieve confidentiality, integrity, and authentication. Our proposal is an integral security kernel based on a powerful mathematical scheme from which all of these cryptographic facilities can be derived. The kernel requires very little resources and has the flexibility of being able to trade off speed, memory or security; therefore, it can be efficiently implemented in a wide spectrum of platforms and applications, either software, hardware or low cost devices. Additionally, the primitives are comparable in security and speed to well known standards.

Revisiting the synthetic control estimator

The synthetic control (SC) method has been recently proposed as an alternative to estimate treatment effects in comparative case studies. The SC relies on the assumption that there is a weighted average of the control units that reconstruct the potential outcome of the treated unit in the absence of treatment. If these weights were known, then one could estimate the counterfactual for the treated unit using this weighted average. With these weights, the SC would provide an unbiased estimator for the treatment effect even if selection into treatment is correlated with the unobserved heterogeneity. In this paper, we revisit the SC method in a linear factor model where the SC weights are considered nuisance parameters that are estimated to construct the SC estimator. We show that, when the number of control units is fixed, the estimated SC weights will generally not converge to the weights that reconstruct the factor loadings of the treated unit, even when the number of pre-intervention periods goes to infinity. As a consequence, the SC estimator will be asymptotically biased if treatment assignment is correlated with the unobserved heterogeneity. The asymptotic bias only vanishes when the variance of the idiosyncratic error goes to zero. We suggest a slight modification in the SC method that guarantees that the SC estimator is asymptotically unbiased and has a lower asymptotic variance than the difference-in-differences (DID) estimator when the DID identification assumption is satisfied. If the DID assumption is not satisfied, then both estimators would be asymptotically biased, and it would not be possible to rank them in terms of their asymptotic bias.

Data base analyzer and parameter estimator (DBAPE) interactive computer program user's manual /

Mode of access: Internet.

A virtual address kernel modification for UNIX /

"February 1980."

The architect's estimator and cost reference guide.

Mode of access: Internet.

The new Building estimator : a practical guide to estimating the cost of labor and material in building construction, from excavation to finish; with various practical examples of work presented in detail, and with labor figured chiefly in hours and quantities. A handbook for architects, builders, contractors, appraisers, engineers, superintendents and draftsmen /

Mode of access: Internet.

The lumber estimator : Board and surface measure contents of fractional sizes of lumber, specially arranged for rapid estimating of contents of stock used in manufacture of doors, sash, blinds, door and window frames, interior and exterior finish, furniture, boxes, veneers, etc., etc. /

p. 113, advertising matter.

Leaver's official feetage estimator ...

Mode of access: Internet.

The American builder's general price book and estimator ... [microform] /

Mode of access: Internet.

The American builder's general price book and estimator, now first published to elucidate the principles of ascertaining the correct value of every description of artificers' work required in building, from the prime cost of materials and labour in any part of the United States ... to which are added, a variety of useful tables, memorandums, etc.

Microfilm. Ann Arbor, Mich., University Microfilms [n.d.] (American culture series, Reel 35.10)

The builder's guide, and estimator's price book. Being a compilation of current prices of lumber, hardware, glass, plumbers' supplies ... also, prices of labor, and cost of performing the several kinds of work required in building ... To which is appended a large number of building rules, data, tables and useful memoranda, with a glossary of architectural and building terms.

Mode of access: Internet.

Multicollinearity and the choice of estimator under squared error loss /

Includes bibliographical references (leaves 19-21).

Two NextGen Air Safety Tools: An ADS-B Equipped UAV and a Wake Turbulence Estimator

Thesis (Master's)--University of Washington, 2016-06