Данная статья посвящена вопросам реализации алгоритмов моделей векторной авторегрессии (VAR) в программной среде R. Достоинствами являются: простота их использования, точность прогнозов, сопоставимая с точностью сложных макроэкономических моделей, отсутствие каких-либо структурных или идентификационных ограничений на параметры. Однако последняя особенность приводит к проблеме перепараметризации...

There are two main avenues to design space exploration. In the first approach, a simulation is run, analyzed, problem modified, and run again. second an ensemble performed battery of results leveraged construct surrogate model for given quantity interest (QoI). The approach allows practitioner methodically move through analyze solution field. A disadvantage this technique that each new requires...

Contraposing the subway car control equipment being scattered, the subway train controlnetwork system based on TCN RTP is designed. By constructing the virtual network environmentnetwork with simulation software NS2 and writing message data of transmission layer protocols.Through testing train control network communication efficiency, the influent factors of communication efficiency is known.Tr...

The trend towards Network on Chip (NoC) architectures in the embedded domain brings new challenges for hardware as well as software developers. Real-time properties, locality issues and the modelling of messaging protocols are just some examples, where the complexity of NoCs is several orders of magnitude higher than in conventional bus based multi-core systems. Thus, the simulation and modelin...

The purpose of this work is to evaluate the quality of encrypted VoIP calls with different encryption algorithms through OpenVPN software, in order to identify differences in results between encryption algorithms and also differences between non-encrypted and encrypted calls. This evaluation will take into account the MOS (Mean Opinion Score), a method to indicate user satisfaction of voice com...

local bus network is the most popular transit mode and the only available transit mode in the majority of cities of the world. increasing the utility of this mode which increases its share from urban trips is an important goal for city planners. timetable setting as the second component of bus network design problem (network route design timetable setting vehicle assignment crew assignment) hav...

While being superior in modeling RF signals and network operations, current network simulation software lack fully functional sensor models that replicate a sensor's interaction with the environment. Due to the fact that the typical approach of modeling sensed data as random processes has obvious drawbacks, it is the goal of this work to investigate the feasibility and benefits of developing us...