Managing the threat of terrorism in British travel and leisure organizations

This paper examines the perceived threats from terrorism in six organizations in the travel and leisure sector in the UK. These organizations are particularly exposed to such extreme threats. This paper examines how managers in organizations deal with uncertainty where probabilities are impossible or difficult to define and examines how they face the challenge of interpreting and acting upon these interpretations. Theoretically the paper draws upon two lenses: organizational resilience and institutional perspectives. The former assumes managers can act autonomously to increase organizational resilience. The latter argues that systemic features of organization are more accurate explanations of why managers and organizations fail to spot threats and impending disasters. The data indicate that perceptions of uncertainty and threats from terrorism and theories of action differ in and between organizations depending upon factors such as the accuracy and completeness of information; previous experience of terrorist events and whether or not these threats were prioritized over other uncertainties. Three organizations in the aviation industry prioritize threats from terrorism, whilst three organizations in the leisure and travel sector do not. Managers in the aviation industry tend to take a proactive, organizational resilience stance towards uncertainty, whilst managers in the other organizations are more reactive, or take little action, with systemic features of organization taking precedence over decisions and actions

Measuring the Effect of Subsidized Training Programs on Movements In andOut of Employment

We present a variety of alternative estimates of the effect of training on the probability of employment for adult male participants in the 1976 Comprehensive Employment and Training Act (CETA) program. Our results suggest that CETA participation increased the probability of employment in the three years after training by from 2 to 5 percentage points. Classroom training programs appear to have had significantly larger effects than on-the--job programs, although the estimated effects of both kinds of programs are consistently positive. We also find that movements in and out of employment for the trainees and a control group of nonparticipants are reasonably well described by a first-order Markov process, conditional on individual heterogeneity. In the context of this model, CETA participation appears to have increased both the probability of moving into employment, and the probability of continuing employment.

Financial innovation, strategic real options and endogenous competition : theory and an application to Internet banking

Innovations in financial services continuously influence the scope of financial intermediation and the nature of competition between intermediaries. This paper examines the optimal exercise of strategic real options to invest in such an innovation, Internet banking technology, within a two-stage game, parameterized by the distribution of bank size and uncertainty over the profitability of investment, and empirically tests the results on a novel data set. Unlike traditional options, in which the distribution of the future value of the underlying asset is exogenous and the timing of exercise affects only the return to the option holder, the timing of the exercise of real options in a strategic context allows the option holder to manipulate the distribution of returns to all players. The value of the strategic investment option in our model, as a consequence, depends on both expected future profits as well as the variance of those profits. Expected profits to an entrant depend, in equilibrium, on its size, as measured by existing market share (concentration) or total assets, relative to its rivals. Conditional on the degree of uncertainty, larger banks should, as a consequence, exercise their options earlier than smaller banks, for purely strategic advantages, and act as market leaders in the provision of Internet banking services. Like ordinary options, however, the value of the strategic investment option to both large and small banks increases in uncertainty, implying that early exercise will be more likely the more information is available about potential demand. We test these hypotheses on investment in Internet banking services with data from a sample of 1,618 commercial banks in the tenth Federal Reserve District during 1999. Evidence indicates that relative bank size, as measured by either market share or asset size, positively influences the likelihood of entry into Internet banking, and trend-adjusted variation in income per person (a proxy for uncertainty of demand) negatively influences the likelihood of entry into Internet banking. In addition, market concentration of a bank's competitive rivals has a negative relationship with the likelihood of entering the market for Internet banking services. These relations are evident in both bivariate analysis and in multivariate logit regression analysis.Competition ; Internet ; Internet banking

Aircraft noise synthesis system: Version 4 user instructions

A modified version of the Aircraft Noise Synthesis System with improved directivity and tonal content modeling has been developed. The synthesis system is used to provide test stimuli for studies of community annoyance to aircraft flyover noise. The computer-based system generates realistic, time-varying audio simulations of aircraft flyover noise at a specified observer location on the ground. The synthesis takes into account the time-varying aircraft position relative to the observer; specified reference spectra consisting of broadband, narrowband, and pure tone components; directivity patterns; Doppler shift; atmospheric effects; and ground effects. These parameters can be specified and controlled in such a way as to generate stimuli in which certain noise characteristics such as duration or tonal content are independently varied while the remaining characteristics such as broadband content are held constant. The modified version of the system provides improved modeling of noise directivity patterns and an increased number of pure tone components. User instructions for the modified version of the synthesis system are provided

The effect of ultrasonic irradiation on the microstructure and corrosion rate of a Zn–4.8wt.% Al galvanising alloy used in high performance construction coatings

The microstructure and corrosion resistance of a Zn–4.8 wt.% Al alloy, typically used for high performance galvanised coatings for construction, was modified by the application of ultrasound during solidification. The alloy exposed to ultrasound had an increased volume fraction of smaller, discrete primary η Zn phase regions that were more uniformly distributed throughout the casting. The morphology of η Zn was altered from dendritic to globular and the Zn/Al eutectic growth was disrupted in localised areas from lamellar to anomalous. These changes were likely due to the physical action of the ultrasound disrupting compositional effects, fragmenting dendrites and through the development of cavitation events causing disruptive mixing. These microstructural changes produced an enhanced cut-edge corrosion resistance of the alloy in 0.1% NaCl when coupled with steel mimicking in service coating conditions that was investigated using the SVET. The primary η Zn crystal regions were focussed sites for anodic Zn dissolution and the smaller η regions produced by ultrasound reduced the corrosion rate by preventing the development of crevice like phenomena that may be associated with larger dendrites. The number and size of primary η Zn regions affected the corrosion rate with reductions in these factors reducing the corrosion rate of the alloy

Execution Integrity with In-Place Encryption

Instruction set randomization (ISR) was initially proposed with the main goal of countering code-injection attacks. However, ISR seems to have lost its appeal since code-injection attacks became less attractive because protection mechanisms such as data execution prevention (DEP) as well as code-reuse attacks became more prevalent. In this paper, we show that ISR can be extended to also protect against code-reuse attacks while at the same time offering security guarantees similar to those of software diversity, control-flow integrity, and information hiding. We present Scylla, a scheme that deploys a new technique for in-place code encryption to hide the code layout of a randomized binary, and restricts the control flow to a benign execution path. This allows us to i) implicitly restrict control-flow targets to basic block entries without requiring the extraction of a control-flow graph, ii) achieve execution integrity within legitimate basic blocks, and iii) hide the underlying code layout under malicious read access to the program. Our analysis demonstrates that Scylla is capable of preventing state-of-the-art attacks such as just-in-time return-oriented programming (JIT-ROP) and crash-resistant oriented programming (CROP). We extensively evaluate our prototype implementation of Scylla and show feasible performance overhead. We also provide details on how this overhead can be significantly reduced with dedicated hardware support

Predicting Prostate Cancer Aggressiveness through a Nanoparticle Test

Prostate cancer (PCa) is the most common malignancy and the second leading cause of cancer death in American men. Due to the lack of accurate tests to distinguish aggressive cancer from indolent tumor, prostate cancer is often over-treated. Post-surgery pathology analysis revealed that 30% of tumors removed by radical prostatectomy are deemed clinically insignificant and would not have required such invasive treatment.^1^ Over-diagnosis and treatment of low-risk prostate cancer has serious and long-lasting side effect: as high as 70% of the patients who receive radical prostatectomy treatment will suffer a loss of sexual potency that cannot be remedied by drugs such as sildenafil citrate.^2^ We herein report a simple nanoparticle-serum protein adsorption test that not only can distinguish prostate cancer from normal and benign conditions, but also is capable of predicting the aggressiveness of prostate cancer quantitatively. This new test could potentially deliver the long-expected and very much needed solution for better individualization of prostate cancer treatment

Using space resources

The topics covered include the following: reducing the cost of space exploration; the high cost of shipping; lunar raw materials; some useful space products; energy from the moon; ceramic, glass, and concrete construction materials; mars atmosphere resources; relationship to the Space Exploration Initiative (SEI); an evolutionary approach to using space resources; technology development; and oxygen and metal coproduction