Why and how to use vector autoregressive models for quality control: the guideline and procedures

While quality control on multivariate and serially correlated processes has attracted research attentions, a number of very detailed problems need to be overcome in order to construct practical control charts. We suggest guidelines for construction of control charts based on vector autoregressive (VAR) residuals. We discuss why VAR model is reasonable for real processes in nature, the use of VAR models to approximate multivariate serially correlated processes, residual estimation, selecting the number of variables, and selecting appropriate orders, among other issues. In addition, we illustrate an example employing VAR techniques to approximate a multivariate process previously examined and construct a control chart to monitor residuals. Last, we illustrate the potential development and use of the VAR residual chart to assist quality control and improvement.     

A Segmentation of Volunteers at the 2013 Austin City Limits Music Festival: Insights and Future Directions

Volunteers at music festivals play a critical role in festival operation and success. As the music festival industry continues to grow, the ability for these large productions to effectively execute a large volunteer program is augmented. Volunteers from the 2013 Austin City Limits Music Festival were surveyed in regards to their self-image congruency, motivation, satisfaction, and intent to return as a volunteer at the festival. Analysis resulted in three distinct segments which has significant practical implications for festival management. Academic implications exist with the addition of self-image congruency and further discovery of volunteers in the festival and event industry.     

By the teeth: A critical examination of James Scott's The moral economy of the peasant

Peasant households in Southeast Asia and elsewhere live on the margin of subsistence. Their survival strategies make them technological conservatives and weavers of reciprocal webs of social obligation and dependence. James C. Scott has argued that the fabric of this “moral economy” both guarantees subsistence for the peasants and forms the touchstone on which their judgements of social justice are tested. When those who should offer succor withdraw it, peasants are outraged and from their anger springs peasant rebellion. Two South Asian peasant rebellions of the 1940s (Telengana and Tebhaga) fail to support Scott's account and raise major questions about his historical method. Two others case studies focused on the early years of colonial contact (the Padri Wars and the capitalist transformation of the Kaveri delta) lead the authors to question sharply the existence of a “moral economy of the peasant” and to suggest that Scott has inadvertently presented a landlord's view of peasant society.     

SUPPLY RESPONSES IN THE SOUTH AUSTRALIAN POTATO INDUSTRY

The potato industry in South Australia is characterised by very unstable prices. One hypothesis for this instability is that potato growers' acreage responses follow a cobweb pattern, that is, a one year lag of acreage to price. This hypothesis is tested, together with a two year lag and a distributed lag. The distributed lag model seems the most satisfactory and gives a short-run elasticity of acreage to price of 0.36 and a long-run elasticity of 1.09. An alternative to the lagged price hypothesis is the "constant cash return" hypothesis which postulates that potatoes are grown to provide a certain cash income to permit farm development. This explanation of acreage response only seems relevant in the dairying and fat lamb areas of the State.