Consider the rst order delay diierential equation x 0 (t) + p(t)x(t ?) = 0; > 0; t t 0 ; () and its discrete analogue Oscillation criteria are established for () in the case where 0 < liminf t!1 R t t? p (s) 1 e and limsup t!1 R t t? p(s)ds < 1, and for () 0 when liminf n!1 n?1 P i=n?k p i k k+1 k+1 and limsup n!1 n P i=n?k p i < 1. reziume. naSromSi ganxil u l ia pir vel i rigis dagvianebu l a...

Harmonograms are visual designs based on harmonic analyses of strings of characters. Fourier descriptors are synthesized according to character positions and values, and then traditional methods are used to generate the resulting curves. Undersampling introduces visual artifacts that actually enhance the final designs. While their primary use is for the creation of artistic designs, harmonogram...

Project schedules are effectively represented by Gantt charts, but comparing multiple versions of a schedule is difficult. To compare versions with current methods, users must search and navigate through multiple large documents, making it difficult to identify differences. We present two novel visualization techniques to support the comparison of Gantt charts. First, we encode two Gantt charts...

Companies increasingly adopt process-aware information systems (PAISs) to model, enact, monitor, and evolve their business processes. Although the proper handling of temporal constraints (e.g., deadlines and minimum time lags between activities) is crucial for many application domains, existing PAISs vary significantly regarding the support of the temporal perspective of a business process. In ...

Project management education programmes are often proposed in higher education to give students competences in project planning (Gantt’s chart), project organizing, human and technical resource management, quality control and also social competences (collaboration, communication), emotional ones (empathy, consideration of the other, humour, ethics), and organizational ones (leadership, politica...

Human schedulers tend to approach their task in an opportunistic way (Woods and Roth, 1988). This requires an interactive system in which the interface elements, and their location, are not tightly bound to a restrictive perspective of the problem. The architecture of a hybrid intelligent system developed by the author is shown in Figure 1. Two types of display — the Jobs Screens and the Gantt ...

Large-scale production is always associated with more and development interaction among peers, many fields achieve higher economic benefits through project cooperation. However, managers in the traditional centralized approach cannot rearrange their activities to cross-organizational management. Thanks its characteristics, Blockchain can represent a valid solution problems mentioned above. In t...

ABSTRACT This paper presents the O-T Diagram (Operations versus Time), an updated computerized-version of the classical Gantt chart in order to simulate the behavior of complex production systems. O-T diagrams are useful to understand the behavior of production systems, in terms of their real lead-time (time elapsed from the moment a production order starts being manufactured till the moment wh...