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The response of an idealized triangular concrete gravity dam is studied due to horizontal and vertical ground motions for both fully reflective and absorptive reservoir bottom conditions. For each combination, in this paper different orders of Givoli-Neta (G-N) high-order truncation condition are aimed to be evaluated from accuracy point of view by comparing the results against corresponding exact solutions which relies on utilizing a two-dimensional fluid hyper-element.

In present study, the dynamic analysis of concrete gravity dam-reservoir systems is formulated by Finite Element (FE)-(FE-TE) approach. In this technique, dam and reservoir are discretized by plane solid and fluid finite elements. Moreover, the G-N high-order condition imposed at the reservoir truncation boundary. This task is formulated by employing a truncation element at that boundary. It is emphasized that reservoir far-field is excluded from the discretized model.

It was observed that trend in gaining accuracy with increase in the order of G-N condition were basically the same for both horizontal and vertical ground motions under full reflective reservoir bottom condition. Moreover, convergence rate increases for absorptive reservoir bottom condition cases in comparison with fully reflective cases. It is also noticed that in certain cases, the responses are hardly distinguishable from corresponding exact responses. This reveals that proposed FE-(FE-TE) analysis technique based on G-N condition is quite successful, and one may fully rely on that for accurate and efficient analysis of concrete gravity dam-reservoir systems.

Dynamic analysis of concrete gravity dam-reservoir systems are formulated by a new method. The salient aspect of the technique is that it utilizes G-N high-order condition at the truncation boundary. This is achieved by developing a special truncation element which its generalized matrices are derived for Finite Element Method (FEM) programmers. The method is discussed for all types of excitation and reservoir bottom conditions. It must be emphasized that although time harmonic analysis is considered in the present study, the main part of formulation is explained in the context of time domain. Therefore, the approach can easily be extended for transient type of analysis.

The expected increase in milk price volatility after the milk quota abolition in the EU will lead to further planning uncertainty on dairy farms. Consequently, the modest supply of insurance and the hedging of milk prices through futures may increase. To shed more light on this possibility, the purpose of this paper is to calculate the additional willingness to pay (WTP) for risk-averse dairy farmers in order to cope with milk price volatility after the quota abolition.

After the European dairy quota abolition, European dairy farmers will be more dependent on the milk price of the world market. To reflect the world market, a time series of milk prices of a dairy processor from New Zealand (NZ) was used because NZ is exporting most of their dairy products under world market conditions. Based on the NZ price series, we approximated milk price volatility after the European dairy quota abolition and calculated the additional WTP of risk-averse dairy farmers in order to cope with milk price volatility.

Using a price series of NZ to approximate milk price volatility after the European dairy quota abolition and comparing it with a German milk price series before quota, the results suggest there might be increased WTP after the milk quota abolition in order to cope with milk price volatility. Following this assumption, the WTP of considerable risk-averse dairy farmers may exceed the initial transaction costs of hedging milk prices with futures on commodity exchanges. Nevertheless, a qualitative discussion of the results shows costs of education, basis risk, and the small size of farms could still keep dairy farmers from hedging the milk price.

In calculating the additional WTP for risk-averse dairy farmers to cope with milk price volatility, this is the first study to attempt to illustrate the expected influence of increasing milk price volatility at the dairy farm level after the dairy quota abolition in the EU. The additional WTP gives further insights into the need for and acceptance of insurance after the dairy quota abolition at the dairy farm level.

This paper examines the design and evaluation of a TV on Demand (TVoD) system, consisting of a globally accessible storage architecture where all TV content broadcast over a period of time is made available for streaming. The proposed architecture consists of idle Internet Service Provider (ISP) servers that can be rented and released dynamically as the client load dictates. This paper examines issues of resource management and content placement within this Video Content Distribution Network (VCDN). The existing placement algorithm is computationally expensive and in some cases, infeasible to execute within any reasonable length of time. This work proposes a number of new placement heuristics each of which attempts intelligently to reduce the search space so that only the best proxies are considered for replica placement. An extensive evaluation of these placement algorithms is carried out to identify a good placement algorithm without being computationally expensive.

The Dutch are not afraid of getting their hands dirty in order to get things done. Faced with increasing numbers of chaotic drug users with little hope or inclination of contacting services, Dutch treatment services have developed a controversial way of getting normally out‐of‐reach clients into care. Based on a treatment model for care in the community patients, drug and alcohol services are resorting to ‘friendly’ persuasion to get people the help they need. This is a historical perspective on ‘interferential’ care and how it can be applied to treatment in the substance misuse field.

In the context of the widespread and extensive use of team work in organizations this study analyses the relationship between individual team role preference and styles of managing interpersonal conflict. Data were collected from 26 work teams containing 169 individuals at two times four months apart. Results show that team role preference is related to Dominating, Integrating, Avoiding, Compromising and Obliging conflict management styles. Moreover, two different effects were observed over time. Firstly, at Time 2 an increase in the role clarity (reduction of role ambiguity) of team members was observed. Secondly, time pressure and team learning processes moderated the relationship between team roles and conflict managing style. Results have theoretical as well as practical implications for team building programmes in search of integrative solutions to conflict.

The purpose of this research is to understand US Upper Midwest dairy farm profitability performance over time and across herd size. Profitability is broken down into asset efficiency and operating profit margin. The primary objective is to determine how much information is required to accurately benchmark farm performance.

Financial ratios to measure profitability (rate of return on assets), profit margin (operating profit margin ratio), and asset efficiency (asset turnover) were collected from Michigan State University and the University of Wisconsin business analysis programs for dairy farms from 2000 through 2016. Financial ratio patterns were examined both across time and herd size. Annual distributions were divided into quartiles and the use of one to five-year averages were used to determine accuracy of quartile rank compared to true long-run farm profitability performance.

Financial performance across large herds was more uniform than across smaller herds. Small and large herd profitability performance converged in poor years but diverged in good years. Using three or more years performance greatly improved accuracy of benchmarking profitability.

The data utilized are very rich in the sense of the amount of variation across years and herd size. The results have important implications for farm financial management and benchmarking farm financial performance. Farm firms should benchmark multiple years of profitability before making major management changes to alleviate deficiencies.

The purpose of this study is (1) to confirm the relationship between the two dimensions of social desirability (pretending and denying), self-reported stress and health reports in police officers and (2) to assess whether dysfunctions in basal cortisol profiles are related to social desirability.

Social desirability is known to influence how individuals respond to sensitive topics, such as questions concerning health in the workplace, and has usually been defined according to two dimensions: pretending and denying. However, it is not known whether social desirability is only a bias in responding to health surveys or a more general attitude of denying problems and pretending to be stronger than one is in the everyday life. If the latter is true, social desirability may have important health implications, and underlying mechanisms must be described. In total, 77 police officers completed questionnaires measuring social desirability (denying and pretending), perceived stress as well as mental and somatic health symptoms. They were further instructed to collect saliva samples for cortisol concentrations assays.

These preliminary results showed that denying was negatively related to the report of stress and health symptoms. Furthermore, police officers higher in pretending showed a flatter diurnal cortisol slope.

The correlation between dysregulation of the hypothalmic-pituitary-adrenal (HPA) axis, as expressed by a flatter cortisol slope, and a higher score in the pretending subscale suggests that looking for social approval by inflating one's capacities is related to chronic work-related stress, making the individual more vulnerable to stress-related disease.

To study the potential health-relevant consequences and underlying mechanisms of social desirability bias related to police culture by including stress biomarkers.

Food—national dietary standards—is a sensitive index of socio‐economic conditions generally; there are others, reflecting different aspects, but none more sensitive. A country that eats well has healthy, robust people; the housewife who cooks hearty, nourishing meals has a lusty, virile family. It is not surprising, therefore, that all governments of the world have a food policy, ranking high in its priorities and are usually prepared to sacrifice other national policies to preserve it. Before the last war, when food was much less of an instrument of government policy than now—there were not the shortages or the price vagaries—in France, any government, whatever its colour, which could not keep down the price of food so that the poor man ate his fill, never survived long; it was—to make use of the call sign of those untidy, shambling columns from our streets which seem to monopolize the television news screens—“out!” Lovers of the Old France would say that the country had been without stable government since 1870, but the explanation for the many changes in power in France in those pre‐war days could be expressed in one word—food!

Service robots need to be programmable by their users who are in general unskilled in the art of robot programming. We have explored the use of spoken language for programming robots.

Two applications domains were studied: that of route instructions and that of game instructions. The latter is work in progress. In both cases work started by recording verbal instructions representative of how human users would naturally address their robot.

The analysis of these instructions reveals references to high‐level functions natural to humans but challenging for designers of robots. The instruction structure reflects assumptions about the cognitive abilities of the listener and it is likely that some human capabilities for rational thinking will be required in service robots.

Some of the high‐level functions called for by natural communication stretch current capabilities and there is a clear case for more effort being devoted in some areas. Instruction analysis provides pointers to such research topics.

It is proposed that service robot design should start with investigating the way end‐users will communicate with the robot. This is encapsulated in the “corpus‐based” approach to robot design illustrated in this paper. This results in more functional service robots.

The paper stresses the importance of considering human‐robot communication early in the robot design process.

This article quantifies public sentiment for dairy products using online media and investigates potential relationships between online media, both volume and sentiment, and future prices of Class III milk.

Netbase, an online media listening platform, was used to quantify US generated online media sentiment and number of mentions regarding dairy products. Granger-causality tests and Impulse Response Functions (IRFs) were used to study relationships between online media derived data and dairy futures prices.

Milk and cheese have more mentions in online media than yogurt and ice cream. Online media net sentiment around milk was the lowest of the dairy products studied. Granger-causality tests showed that Class III milk price Granger-causes net sentiment of dairy as a whole and of fluid milk. Price additionally Granger-causes mentions of milk, ice cream and yogurt. Notably, milk and ice cream mentions Granger-cause the Class III milk price. IRF's reveals that increases in mentions have a positive, albeit small, effect on the Class III milk price that is statistically significant for ice cream, but not for milk. IRF's directionality of the relationship from price to online media derived data was mixed.

This is the first time that relationships between online media -volume and sentiment- and futures prices of an agricultural commodity are researched. Exploration of futures markets alongside online media advances the use of online media to glean insights in financial, along with food and agricultural markets.