Requirements of IS Development Methodologies Towards the New Organizational Paradigm - A Brasilian Study Using Delphi Technique

Abstract

The purpose of this study was to identify through the Delphi Technique, important requirements of an information system development methodology. These requirements should satisfy the needs of actual organizations, regarding the strategic use of information technology. An initial listing of requirements was developed through a review of the related literature. The Delphi panel consisted of 31 brazilian specialists in information systems. Two rounds were employed to collect from this panel the most important requirements. The requirements were distributed in five basic areas: technical process, interaction between the end user and analysts, organizational structure, business strategies and quality of the information system. It is expected that methodologies will continue to be of great importance in the development of information systems and they will increase their focus on the social-technical approach.

Multiplicity difference between heavy- and light-quark jets revisited

“…(12). This figure is taken from [44] with the addition of the result from the VENUS experiment at √ s = 58 GeV [36] as well as the preliminary result from DELPHI at √ s = 206 GeV [49] . The dash-dotted line shown in Fig.…”

“…The total uncertainty (statistics and systematics combined) on δ bℓ quoted in their analysis is about a factor two larger than those quoted by SLD [42,45] and OPAL [41], and if we assume a similar relative precision also for δ cℓ , by comparison with the SLD and OPAL total uncertainties we get for DELPHI δ cℓ = 1.64 ± 1.2. Our weighted average in Table 1 would change to δ cℓ = 6 There are published results on the measurements of N ch c and N ch ℓ also at LEP2 energies [43,44,49]. Unfortunately, the limited statistics available at each energy did not allow the efficient c-quark tagging, comparable to that at the Z 0 peak.…”

Multiplicities, fluctuations and correlations

“…In this Section, I consider the recent results on hadron multiplicities from fragmentation of heavy and light quarks [6][7][8]. The study of the quark content in multiparticle production provides one of the basic tests of QCD.…”

“…In Refs. [6] and [8], a study of the fragmentation of heavy b-quark and light quarks (l = u, d, s) is performed. The measurements of the difference in charge particle multiplicities, δ bl = n bb − n ll , for bb and ll events in e + e − annihilation at the centre-of-mass energies above the Z 0 peak are carried out.…”