Nowadays, competitive market creates the necessity of quality improvement in different levels of supply chains (SCs). This paper contributes to the SC coordination literature and proposes a bilateral coordination contract for optimizing pricing decisions along with quality improvement decisions in different echelons of a real case of a cell phone SC. The SC comprises a manufacturer who deals wi...

Continual improvement is a key component of environmental management systems (EMS) according to ISO 14001 standard. But in contrast to most other specifications in the standard, it is difficult to assess. The following article discusses factors influencing the EMS improvement in Polish companies according to ISO 14001 standard. Research of the factors influencing the EMS improvement was conduct...

Numerous applications all theway frombiology and physics to economics depend on the density of first crossings over a boundary.Motivated by the lack of general purpose analytical tools for computingfirst-passage time densities (FPTDs) for complex problems, we propose a new simple method based on the independent interval approximation (IIA).We generalise previous formulations of the IIA to inclu...

In many embedded and distributed applications, very large number of sensors are deployed to gather important information for remote surveillance, continual monitoring and distributed target tracking. These sensors may be highly mobile and scattered over a wide area. Dissemination and fusion of real-time sensor information through these large self-organizing sensor networks must adapt rapidly to...

The rapid development of information affects many aspects human life. So that the field security becomes one aspect must be considered. This study aims to measure awareness and improve daily operational activities managing IT services effectively efficiently. Salemba Adventist Academy has used Wium Online Education Management System (WIOEM) online system, but in its implementation system are no...