Background: Due to the lack of a proper waste management system, Tehran Municipality Region 20 is facing economic and environmental problems such as the high costs of a disposal system and source pollution. Life cycle assessment (LCA) is a method for collecting and evaluating the inputs, outputs, and potential environmental impacts of a product system throughout its life cycle. The current stud...

The purpose of this paper is to design a guidance and control system and evaluate the performance of a sample surface‑to‑surface flying object based on preset guidance with a new prospective. In this study, the main presented idea is usage of unique property of governor differential equations in order to design and develop a controlled system. Thereupon a set of system output variables have bee...

The daily life of a common man revolves around various forms of appliances/gadgets he uses throughout the day such as a mobile phone, laptop, printer, microwave oven, washing machine, etc. Although these appliances/gadgets are taken by most of the people for granted, the problem occurs when any of these things do not work as they are expected to. Getting them to the repair shops for every small...

The desire to enhance the attractiveness of public transit services constitutes a factor of development as well as innovation in this field. Such a motivation is typically aimed at improving the performance of systems while holding costs under control. Against this backdrop, we have analyzed a docking assistance device installed on conventional articulated buses and placed into operation in two...

The Informal Sector in Solid Waste is a Global Phenomenon 1. There are active informal solid waste sectors in cities of widely varying demographic, socioeconomic and geographic characteristics. 2. In spite of specific and measurable differences in the set-up and effectiveness of the formal solid waste systems in the six cities, and the degree to which these are modernised or privatised, there i...

crisis. Several thousand pounds of hazardous waste are generated annually for every person in the nation.1.2 Also, the total cost of waste management is escalating at a rate of 20-309'0/yr.~ The Office of Technology Assessment (OTA) finds that reducing waste, by preventing it from being generated at the source, is now a practical way to complement the costly pollution control regulatory system....

guidance and control of aircraft in the landing phase imposes extra pilot work loads, hence application of automatic landing control systems is of great importance. in this study automatic landing control systems are introduced and an optimal landing control system is designed. the control system performance criteria are based on minimum control effort. the designed system is simulated for a tr...

In this paper we consider the problem of air to ground missile guidance system using fuzzy controller. The missile model is assumed as three degree of freedom (3DOF) (assuming the analysis in the vertical plane only).The homing guidance method is used. This paper presents numerical results for applying the fuzzy controller to the missile in different situations of control parameters in differen...