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The paper seeks to identify the factors that are responsible for the incursion of non‐professionals, otherwise called quacks, into property management practice in Nigeria.

Primary data were collected with the aid of questionnaires served on 270 estate surveying firms based in the study area. The proportion method was used to determine the factors that are significantly responsible for the daily incursion of non‐professionals whose activities have negatively affected real estate investment in the country.

The result shows that the high income derivable from property management practice is a major factor. Other factors in their perceived order of importance include provision of unsatisfactory and less than standard service by estate surveyors, lack of confidence by clients on the estate surveyor to evict erring tenants and shortage of qualified personnel.

Obtaining the perception of practitioners could subject the findings of the study to bias. Further research targeted at the clients of property management services will provide a balanced view.

The findings from this study will provide professional bodies and policy makers with data to curb the activities of quacks and enhance the practice of real estate management.

Purpose – This chapter examines the risk of a hostile incursion as perceived by Fremont farmers living in the Range Creek area of Utah, 700–1700 years ago.

Methodology/approach – We build two simple financial portfolio models where agents (Fremont farmers) choose optimal locations to store grain based on a trade-off between ease of access during normal times and difficulty of confiscation during a hostile incursion. We calibrate our model using the observed distances and difficulty of access to granaries measured in caloric costs.

Findings – We find that even low or moderate probabilities of an incursion rationalize the use of cliff granaries. Risk on the order of a 5–25% chance per year makes building, maintaining, and transporting grain to a cliff granary worthwhile.

Social implications – Our research does not rule out other motives for granary construction. However, it does show that a small threat of hostilities can explain the observed location of granaries in Range Creek and other areas of Fremont habitation.

Originality/value of chapter – This research is unique in its application of standard financial portfolio theory (normally dealing with optimal holdings of risky financial assets) to the problem of deducing perceived risk. To our knowledge, this is the first use of these rational financial models in the context of a human population that has left no explicit economic evidence such as prices or transaction records.

Some aircraft runway collisions are described first to illustrate some common features of a runway incursion (RI) incident. Then, using the FAA definition of runway incursion, some data relating to RI incidents are presented to show that both RIs and incursion rates are growing steadily in the USA. Data for UK airport operations also indicate that the incursion rates in Britain are of the same order. Hence there is a need for some form of RI prevention. Most of the technological prevention systems available, or being developed, are briefly described before the paper concludes with the suggestion that effective prevention may be more swiftly obtained by improving airside signage and training for airport workers who use runways and taxiways in their vehicles.

This study employs Stein Rokkan's methodological approach to analyse state formation in the Greater Middle East. It develops a conceptual framework distinguishing colonial, populist and democratic pacts, suitable for analysis of state formation and nation-building through to the present period. The framework relies on historical institutionalism. The methodology, however, is Rokkan's. The initial conceptual analysis also specifies differences between European and the Middle Eastern state formation processes. It is followed by a brief and selective discussion of historical preconditions. Next, the method of plotting singular cases into conceptual-typological maps is applied to 20 cases in the Greater Middle East (including Afghanistan, Iran and Turkey). For reasons of space, the empirical analysis is limited to the colonial period (1870s to the end of World War 1). Three typologies are combined into one conceptual-typological map of this period. The vertical left-hand axis provides a composite typology that clarifies cultural-territorial preconditions. The horizontal axis specifies transformations of the region's agrarian class structures since the mid-19th century reforms. The right-hand vertical axis provides a four-layered typology of processes of external intervention. A final section presents selected comparative case reconstructions. To the authors' knowledge, this is the first time such a Rokkan-style conceptual-typological map has been constructed for a non-European region.

Purpose – With reference to the long-term struggle to confirm cigarette smoking as a manifestation of nicotine addiction, this chapter explores the extent to which new understandings of addictions as ‘appetitive disorders’ rather than ‘dependence disorders’ derive from treatment technology development as well as advances in basic scientific research.

Approach – Through historical analysis it is discussed how cigarette smoking only became widely accepted as a real drug problem in the 1980s after it had been shown to be amenable to treatment as such through the use of novel nicotine replacement therapies.

Findings – These replacement therapies succeeded in showing that the same drug that drew users into addiction could be redeployed to help draw up them out of it. Nicorette® could serve as at least the partial antidote to nico-wrong (cigarettes). However, as relapse to smoking has remained the most likely outcome of any smoking cessation attempt, so medicinal nicotine has also served to demonstrate that nicotine addiction is ultimately a problem of an uncontrollable appetite for cigarettes in excess of drug dependence.

Implications – Pharmaceutical incursion on cigarette smoking commencing in the late 1970s pointed to the need for a new mental disease model of drug-related problems while also providing valuable new tools and insights for ensuing brain research.