This research studies how organizational adoption of three different types of changechange in products, in technological processes and in administrative processes -is influenced by environmental factors such as industry regulation and market concentration and by the prior adoption of different types of change. We tested our hypotheses in the service sector, examining a sample of bank holding companies in the USA for the period 1975-1995. We found that (1) environmental factors influence rates of change in products, in technological processes and in administrative processes differently; (2) changes in products are followed by changes in both technological and administrative processes; and (3) the three types of change exhibit momentum, as firms are more likely to implement changes similar to those they have recently undertaken. We discuss the implications of our findings for the theory and management of change in organizations.

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With water becoming an even scarcer resource, rainwater harvesting (RWH) systems are becoming increasingly more commonplace as mechanisms to capture and store rainwater for both agricultural and domestic use. Three important engineering considerations associated with the construction of RWH systems are the capture surface area, the tank volume required for specific demand levels, and the number of expected occupants. The purpose of this work is to evaluate the engineering design of a RWH system in a semi-arid Texas region using a non-parametric stochastic rainfall generator based on 64 years of data and to provide engineering charts and equations for future use. We model the RWH system using simulation techniques in order to estimate requirements for building a system capable of providing a family with 100% of its water requirements with demand never exceeding available supply (100% demand satisfaction).

A model is developed and tested to explain the relationships among narcissism, privacy concern, vigilance, and exposure to risk on Facebook, with age and gender as controlling variables. Two important constructs are conceptualized and measured in this research. Facebook exposure is defined as the opportunity for privacy and security breaches on Facebook. Facebook vigilance is the extent to which consumers stay focused, attentive, and alert to potential security and privacy risks on Facebook by restricting who can access and post to their Facebook accounts. Data from a survey of 286 adult Facebook users in the U.S. support the hypothesized relationships in the model. Results suggest that narcissism is related to increased Facebook exposure and lower Facebook vigilance, despite greater stated concern for privacy and security. Furthermore, females and younger users have greater risk exposure compared to males and older users. Implications of the findings and future research directions are discussed.