Elastic Optical Networks have emerged as a promising technology for the efficient use of optical network resources. Its adaptable characteristics and adjustable data rate enable operators to meet the diverse granularity of their clients needs. In order to automate an elastic optical network operation, a control plane is required. Wavelength Switched Optical Networks (WSON) may already rely on a...

Control of dispersion in fibre optical waveguides is of critical importance to optical fibre communications systems and more recently for continuum generation from the ultraviolet to the mid-infrared. The wavelength at which the group velocity dispersion crosses zero can be set by varying fibre core diameter or index step. Moreover, sophisticated methods to manipulate higher-order dispersion so...

Motion estimation in realistic outdoor settings is significantly challenged by cast shadows, reflections, glare, saturation, automatic gain control, etc. To allow robust optical flow estimation in these cases, it is important to choose appropriate data cost functions for matching. Recent years have seen a growing trend toward patch-based data costs, as they are already common in stereo. Systema...

One of the most important problems in 3D tracking is the occlusion effect produced by obstacles. To solve this problem, we have developed a tracking system based on optical flow and stereo vision, combinedwith adaptive filters to predict the expected 3D velocities of objects. The critical point of the system is the coupling between tracking and predictive algorithms. We propose the use of a fuz...

Version control systems (VCS) are widely used to manage the history of code bases. These histories in turn provide opportunities for research. Researchers expect the commits in these version control systems to be atomic. That is, each commit performs one task. This is however not always the case. To remedy this, we propose a commit untangling technique using program slicing. In particular, we p...

The topic of the study is topical, as the various universities and non-governmental companies are looking for ways to improve their processes to gain budget savings. This study will debate on the development, comprehension and rationalization of version control system (VCS) usage at Finnish Aalto University. The applied research methodology is a multiple case study analysis. The study has been ...

Fiber optic sensors can be used to monitor deformation and/or the overall integrity of structure components. In this paper, we propose a fuzzy control theory based control principle for sensors, and design a new kind of fiber optic sensor used for Geological monitoring. In order to validate the efficiency of the designed sensor, we simulate a water inrush model in a coal mine, and observe the w...

the degradation of crude oil under a no-control and dispersant-control setting was evaluated using loss of biological activity test, microbial population growth and measurements of optical transmittance of test media. comparison of the toxicity of crude oil under the no-control setting to crude oil-dispersant mixture revealed that the mixture was about 2 times more toxic than the crude oil unde...

Previous techniques for the management and control of optical transport networks are proving inadequate in today’s rapidly evolving multivendor environments. This article examines the issues and challenges involved in developing a standardized optical network control plane. The control of optical transport networks is decomposed into provisioning models, a circuit provisioning process based on ...