energy, due to its increasing usage in various broad areas has been maintained as a vital factor in economic growth and development of societies. meanwhile, natural gas is considered as one of the most important energy sources. therefore, the efficiency and the productivity of the gas companies are crucial to be assessed. numerous examples from industrial multistage processes including internal...

Abstract Recently, the synchrosqueezing transform (SST) was developed as an alternative to the empirical mode decomposition scheme to separate a non-stationary signal with time-varying amplitudes and instantaneous frequencies (IFs) into a superposition of frequency components that each have well-defined IFs. The continuous wavelet transform (CWT)-based SST sharpens the time-frequency representa...

Indonesia, as the biggest archipelagic country in world, has a problem with distribution of its network infrastructure to provide broadband access across regions. It is very important because Indonesia entered digital era which needs data, Indonesia’s capacity data are growing rapidly. A submarine cable can provided connect connections between cities and provinces, especially 3T area (frontier,...

Arfak Mountains Regency is part of West Papua Province with an undulating to mountainous topography that spreads at altitude 800 – 3,000 m above sea level the main livelihood its community farming highland vegetables. This region has a very suitable and potential climate for development Arabica coffee. also 2 lakes 2000 level, so existence coffee plantations can support ecotourism in this area....

In this paper, we derive a priori error estimates for a class of interior penalty discontinuous Galerkin (DG) methods using immersed finite element (IFE) functions for a classic second-order elliptic interface problem. The error estimation shows that these methods can converge optimally in a mesh-dependent energy norm. The combination of IFEs and DG formulation in these methods allows local mes...

background: heat stress is one of the most important consequences of occupational heat exposure worldwide. current heat stress indexes are not suitable for heat strain screening in developing countries due to their inherent and applied limitations. a new observation and subjective screening method is required that needs no instrument. in this study, a scale is developed based on the most import...

awareness and preparedness for prevention of crisis plays an important role in minimizing its impacts and fatalities. this study suggests how to enhance the efficiency of crisis management through applying a resilience engineering (re) approach. the aim of this study was to design a questionnaire to assess crisis management based on re approach. in this descriptive survey, four principles of re...

the aim of the present research was to compare the performance evaluation indicators of club coaches from experts, athletes and coaches' viewpoints. the statistical population included all physical education experts of guilan province, heads, deputy heads and secretaries of physical education boards, athletes and coaches from rasht city (n=470) and 345 subjects (73.4%) participated in the ...