To date comparative studies have not convinced the HCI community about the reliability of results from usability evaluations. User testing of the same products by different usability teams found different problems (Molich et al., 1999). Discount methods also have the same problem. With heuristic evaluation method, for example, overlaps between evaluators’ results are often as low as 10% (Molich...

We prove a formula for the number of permutations in Sn such that their first n−k entries are increasing and their longest increasing subsequence has length n − k. This formula first appeared as a consequence of character polynomial calculations in the work of Adriano Garsia, [2]. We give an elementary proof of this result and also of its q-analogue. In [2], Adriano Garsia derived as a conseque...

Protein interactions are crucial components of all cellular processes. An in-depth knowledge of the full complement of protein interactions in a cell, therefore, provides insight into the structure, properties and functions of the cell and its components. An accurate and comprehensive protein interaction network is, thus, an invaluable framework to study protein regulation in disease. Although ...

Damage scenarios for large networks are considered. The cascade scenario is described by means of powers of adjacency matrix. More difficult probabilistic variants of the large network damage are modeling by Markov’s chains. For reliability augmentation of networks we add a set of random intermediate agents with big dimensionality. It provides high reliability of all system even with low reliab...

In a scientific community that increasingly relies upon High Performance Computing (HPC) for large scale simulations and analysis, the reliability of hardware and applications devoted to HPC is extremely important. While hardware reliability is not likely to dramatically increase in the coming years, software must be able to provide the reliability required by demanding applications. One way to...

In our opinion, methods for construction of reliable software are of great importance. Reliability engineering must start in the earliest phases of a software project, and it has to consider not only the architectural level, but should be in the mind of humans even earlier when analyzing the problem space. In a previous paper, we argued that reduction of redundancy of software is a central fact...

LoRaWAN deployments follow an ad-hoc deployment model that has organically led to overlapping communication networks, sharing the wireless spectrum, and completely unaware of each other. uses ALOHA-style where it is almost impossible schedule transmission between networks belonging different owners properly. The inability will cause inter-network interference, which increase node-to-gateway mes...

Network traffic anomalies stand for a large fraction of the Internet traffic and compromise the performance of the network resources. Detecting and diagnosing these threats is a laborious and time consuming task that network operators face daily. During the last decade researchers have concentrated their efforts on this problem and proposed several tools to automate this task. Thereby, recent a...

In this paper we describe an infrastructure that provides increased reliability for three-tier applications, transparently , using commercial off-the-shelf application servers and database systems. In this infrastructure the application servers are actively replicated to protect the business logic processing. Replicating the transaction coordinator renders the two-phase commit protocol non-bloc...