Justification of technical solutions of intercar gangway based on solid-state mathematical modeling
Justification of constructive solutions of intercar gangway is based on solid-state mathematical modeling methods of three-carriage home passenger trains set coupling. Possibility of buffer system refusal is justified by their replacement on intercar oscillation absorbers, zones of their arrangements and rational parameters are defined.
Modelling and linear analysis of high-speed articulated trainsets
The success of high-speed rail systems in Europe and Japan has led to the consideration of deployment of such systems in the United States. Since operating conditions in the United States are different from those in Europe and Japan, questions arise as to the safety-related behaviour of such systems. To address questions of dynamic behaviour, linear simulation models have been developed to compute the lateral stability of articulated trainsets on tangent track. These models include the essential features of articulated trainsets such as shared trucks and suspension characteristics such as car-to-car connections and car-to-truck yaw dampers. Parameter studies have been conducted for a trainset consisting of ten vehicles and having a critical speed of approximately 310 km/h. The studies show that consist stability is sensitive to the yaw damping between the trucks and the carbody, the conicity of the wheel profile, and the primary suspension. Other parameters affect the stability but to a lesser degree. The modal behaviour of the consist suggests that instabilities can occur in the form of whole consist modes, in some cases a wave-like motion, especially at low conicities.
A STUDY ON ORGANIZED RETAILING AND ITS CHALLENGES AND RETAIL CUSTOMER SERVICES
India is becoming most favored retail destination in the world. Today retail sector contributing 10% to countryâ€™s GDP. Indian retail industry is ranked among the ten largest retail markets in the world. The change of attitudes of Indian consumers and the emergence of organized retail formats have transformed the face of retailing in India. Organized retailing offers huge potential for future growth of retailing in India. This paper provides information about the growth of retailing in India. And also focuses on the challenges faced by organized retail sector in India. It also emphasize on major players of retailers in India and customer services provided by the retailers. This paper also deals with various retail formats and the opportunities for the growth of retail industry in India and also provides some suggestions to overcome the challenges.