Non-functional requirements (NFRs), sometimes termed quality, or quality of service, attributes or requirements, have been a topic of interest within systems engineering, software engineering, and requirements engineering for a considerable period of time. NFRs have been for too long overlooked during the development of software systems. This has led to numerous cases of failure resulting in ov...

In this paper, we describe a hybrid recommendation system combining the two main approaches to recommendation collaborative filtering and content-based classification. We build a collaborative filtering framework to construct a useritem matrix of ratings and produce recommendations based on user-user similarity computed using Pearson correlation. We tackle the sparsity of the user-item matrix b...

Web services have the potential to provide much more seamless, dynamic and open distributed applications than earlier technologies. We describe our experiences developing an integrated, collaborative travel planning application using .NET, C# and web services. This application provides a unified portal for customers and travel agents to plan, revise and book travel itineraries, with interaction...

due to agriculture is a risky activity and risk models is important in order to analyze the behavior of farmers, hence, in this study, the factors affecting risk-taking and risk aversion is the region grape growers. data analysis was performed by using stochastic frontier. data gathered by questionnaires at three counties of zabol, hirmand and zahak at 265 grape farmers in crop year of 2011-201...

Tourist services are one of the most popular products offered online. This has given rise to all service suppliers to offer their products over the Internet. Currently elementary services as hotels, flights or rental cars and travel packages can be booked online. Despite the high interdependence of tourist products there is no possibility for easy and user friendly online bundling of tourist pr...

We want to reveal the usefulness of mobile robots by showing concrete applications in human daily life through this study. In this paper, our trials to realize several specific tasks are shown. The development of an Intelligent Escort Robot moving together with human is presented first. A teleoperated book browsing robot is described next. And finally, a network-based stationeries rental servic...

In the 1980s, the Thai government tried to legalize squatters living in certain geographical areas by issuing special titles that allowed for cultivation but restricted the sale and rental of the land. Using data from 2,874 farming households collected in 1997 and a differences-in-differences empirical strategy, we compare the differential rental rates between secured and unsecured plots in ref...

In 1993, National Car Rental faced liquidation. General Motors Corporation (National's parent) took a $744 million charge against earnings related to its ownership of National Car Rental Systems. National faced liquidation, with the loss of 7,500 jobs, unless it could show a profit in the short term. National initiated a comprehensive revenue management program whose core is a suite of analytic...

Fraudulently posted online rental listings, rental scams, have been frequently reported by users. However, our understanding of the structure of rental scams is limited. In this paper, we conduct the first systematic empirical study of online rental scams on Craigslist. This study is enabled by a suite of techniques that allowed us to identify scam campaigns and our automated system that is abl...

Property asset management is keenly influenced by the market rental price for the services and asset quality. Renovation is conceived as a form of redevelopment that returns the property back to its pristine state after experiencing quality deterioration. We formulate a two-factor renovation model under rental price and quality uncertainty and a fixed investment cost. The renovation policy is d...