Consolidation of a wsn and minimax method to rapidly neutralise intruders in strategic installations

Due to the sensitive international situation caused by still-recent terrorist attacks, there is a common need to protect the safety of large spaces such as government buildings, airports and power stations. To address this problem, developments in several research fields, such as video and cognitive audio, decision support systems, human interface, computer architecture, communications networks and communications security, should be integrated with the goal of achieving advanced security systems capable of checking all of the specified requirements and spanning the gap that presently exists in the current market. This paper describes the implementation of a decision system for crisis management in infrastructural building security. Specifically, it describes the implementation of a decision system in the management of building intrusions. The positions of the unidentified persons are reported with the help of a Wireless Sensor Network (WSN). The goal is to achieve an intelligent system capable of making the best decision in real time in order to quickly neutralise one or more intruders who threaten strategic installations. It is assumed that the intruders’ behaviour is inferred through sequences of sensors’ activations and their fusion. This article presents a general approach to selecting the optimum operation from the available neutralisation strategies based on a Minimax algorithm. The distances among different scenario elements will be used to measure the risk of the scene, so a path planning technique will be integrated in order to attain a good performance. Different actions to be executed over the elements of the scene such as moving a guard, blocking a door or turning on an alarm will be used to neutralise the crisis. This set of actions executed to stop the crisis is known as the neutralisation strategy. Finally, the system has been tested in simulations of real situations, and the results have been evaluated according to the final state of the intruders. In 86.5% of the cases, the system achieved the capture of the intruders, and in 59.25% of the cases, they were intercepted before they reached their objective.

Consolidation problems

The analysis of deformation in soils is of paramount importance in geotechnical engineering. For a long time the complex behaviour of natural deposits defied the ingenuity of engineers. The time has come that, with the aid of computers, numerical methods will allow the solution of every problem if the material law can be specified with a certain accuracy. Boundary Techniques (B.E.) have recently exploded in a splendid flowering of methods and applications that compare advantegeously with other well-established procedures like the finite element method (F.E.). Its application to soil mechanics problems (Brebbia 1981) has started and will grow in the future. This paper tries to present a simple formulation to a classical problem. In fact, there is already a large amount of application of B.E. to diffusion problems (Rizzo et al, Shaw, Chang et al, Combescure et al, Wrobel et al, Roures et al, Onishi et al) and very recently the first specific application to consolidation problems has been published by Bnishi et al. Here we develop an alternative formulation to that presented in the last reference. Fundamentally the idea is to introduce a finite difference discretization in the time domain in order to use the fundamental solution of a Helmholtz type equation governing the neutral pressure distribution. Although this procedure seems to have been unappreciated in the previous technical literature it is nevertheless effective and straightforward to implement. Indeed for the special problem in study it is perfectly suited, because a step by step interaction between the elastic and flow problems is needed. It allows also the introduction of non-linear elastic properties and time dependent conditions very easily as will be shown and compares well with performances of other approaches.

Toward a consolidation of the CPV-specific-test procedures for inverters

The inverter in a photovoltaic system assures two essential functions. The first is to track the maximum power point of the system IV curve throughout variable environmental conditions. The second is to convert DC power delivered by the PV panels into AC power. Nowadays, in order to qualify inverters, manufacturers and certifying organisms use mainly European and/or CEC efficiency standards. The question arises if these are still representative of CPV system behaviour. We propose to use a set of CPV – specific weighted average and a representative dynamic response to have a better determination of the static and dynamic MPPT efficiencies. Four string-sized commercial inverters used in real CPV plants have been tested.

Electroconvulsive shock and lidocaine reveal rapid consolidation of spatial working memory in the water maze.

Head trauma leading to concussion and electroconvulsive shock (ECS) in humans causes amnesia for events that occurred shortly before the injury (retrograde amnesia). The present experiment investigated the amnesic effect of lidocaine and ECS in 25 rats trained on a working memory version of the Morris water task. Each day, the escape platform was moved to a new location; learning was evidenced by a decrease in the latency to find the platform from the first to the second trial. "Consolidation" of this newly encoded spatial engram was disrupted by bilateral inactivation of the dorsal hippocampus with 1 microliter of 4% lidocaine applied as soon as possible after the first trial. When trial 2 was given after recovery from the lidocaine (30 min after the injection), a normal decrease in latency indicated that the new engram was not disrupted. When trial 2 was given under the influence of lidocaine (5 min after injection), absence of latency decrease demonstrated both the success of the inactivation and the importance of hippocampus for the task. To examine the role of events immediately after learning, ECS (30 or 100 mA, 50 Hz, 1.2 sec) was applied 0 sec to 45 sec after a single escape to the new platform location. A 2-h delay between ECS and trial 2 allowed the effects of ECS to dissipate. ECS applied 45 sec or 30 sec after trial 1 caused no retrograde amnesia: escape latencies on trial 2 were the same as in control rats. However, ECS applied 0 sec or 15 sec after trial 1 induced clear retrograde amnesia: escape latencies on trial 2 were no shorter than on trial 1. It is concluded that the consolidation of a newly formed memory for spatial location can only be disrupted by ECS within 30 sec after learning.

Parti communiste et féminisme. De l’antifascisme à la transition démocratique en Espagne

Dans les années 1930, les femmes membres du Parti communiste espagnol (PCE) collaborent avec des représentantes du féminisme et réclament une égalité pour les femmes sans pour autant se déclarer féministes. Pendant la guerre civile, elles ne remettent pas en question l’attribution de tâches maternelles aux femmes, mais elles revendiquent une participation politique dans les mêmes conditions que les hommes. Au cours des années 1970 cependant, la culture politique communiste traditionnelle, qui repose sur une relation de genre inégale, est remplacée par une nouvelle culture, dans laquelle socialisme et égalité vont de pair. Pendant la transition démocratique, les militantes se considèrent comme féministes et demandent que les fondements théoriques du féminisme soient assumés par le Parti.

Role of Dopamine D2 Receptors in the Consolidation of Amphetamine-Cue Memory in Conditioned Activity in Rats

The neurotransmitter dopamine (DA) plays an essential role in reward-related incentive learning, whereby neutral stimuli gain the ability to elicit approach and other responses. In an incentive learning paradigm called conditioned activity, animals receive a stimulant drug in a specific environment over the course of several days. When then placed in that environment drug-free, they generally display a conditioned hyperactive response. Modulating DA transmission at different time points during the paradigm has been shown to disrupt or enhance conditioning effects. For instance, blocking DA D2 receptors before sessions generally impedes the acquisition of conditioned activity. To date, no studies have examined the role of D2 receptors in the consolidation phase of conditioned activity; this phase occurs immediately after acquisition and involves the stabilization of memories for long-term storage. To investigate this possible role, I trained Wistar rats (N = 108) in the conditioned activity paradigm produced by amphetamine (2.0 mg/kg, intraperitoneally) to examine the effects of the D2 antagonist haloperidol (doses 0.10, 0.25, 0.50, 0.75, 1.0, & 2.0 mg/kg, intraperitoneally) administered 5 min after conditioning sessions. Two positive control groups received haloperidol 1 h before conditioning sessions (doses 1.0 mg/kg and 2.0 mg/kg). The results revealed that post-session haloperidol at all doses tested did not disrupt the consolidation of conditioned activity, while pre-session haloperidol at 2.0 mg/kg prevented acquisition, with the 1.0 mg/kg group trending toward a block. Additionally, post-session haloperidol did not diminish activity during conditioning days, unlike pre-session haloperidol. One possible reason for these findings is that the consolidation phase may have begun earlier than when haloperidol was administered, since the conditioned activity paradigm uses longer learning sessions than those generally used in consolidation studies. Future studies may test if conditioned activity can be achieved with shorter sessions; if so, haloperidol would then be re-tested at an earlier time point. D2 receptor second messenger systems may also be investigated in consolidation. Since drug-related incentive stimuli can evoke cravings in those with drug addiction, a better understanding of the mechanisms of incentive learning may lead to the development of solutions for these individuals.

Poor and under pressure: the social impact of Europe's fiscal consolidation. Bruegel Policy Contribution, Issue 2015/04, March 2015

Europe faces major challenges related to poverty, unemployment and polarisation between the south and the north, which impact adversely the current living conditions of many citizens, and also negatively impact medium- and long-term economic growth. Fiscal consolidation exaggerated social hardship. In vulnerable countries there was no alternative to fiscal consolidation, but in most EU countries and at aggregate EU level, consolidation was premature when the cyclical position of the economy was deteriorating. Spending on social protection was shielded relative to other spending categories, but public bank rescue costs were high. While the changes in the tax mix favoured job creation, the overall tax burden become more regressive. There is an increasing generational divide between the elderly and the young in terms of social indicators. Social spending on elderly people was favoured relative to spending on families, children and education. There is now a serious danger that a lost generation might develop in several member states. Forceful policies should include bold structural reforms, better use of the European economic governance framework, more demand promotion, and a revision of national tax/benefit systems for fair burden sharing between the wealthy and poor.

A case for adjusting fiscal consolidation in the eurozone. European Policy Brief No. 14, January 2013

Fiscal consolidation is essential to ensure the sustainability of eurozone countries’ public debt. However, as a principle, consolidation should not be pursued at a pace unnecessarily undermining growth in the short term. Repeated downward revisions of growth call for the use of the flexibility foreseen in the EU fiscal framework. The Commission should adapt the deadlines for fiscal correction to prevent excessive, pro-cyclical adjustment in 2013. In turn, adequate surveillance and coordination must ensure structural adjustments constitute the core of fiscal consolidation plans.

The Politics of Budget Consolidation in Britain and Germany: the Impact of Blame-Avoidance Opportunities. CES Germany & Europe Working Papers, No. 05.2, 2005

According to parts of the literature, blame avoidance opportunities, i.e. the necessity and applicability of blame avoidance strategies, may differ among countries according to the respective institutional set-ups and between governing parties according to their programmatic orientation. In countries with many veto actors, a strategy of "Institutional Cooperation" among these actors is expected to diffuse blame sufficiently to render other blame avoidance strategies obsolete. In contrast, governments in Westminster democracies should resort to the more unilateral strategies of presentation, policy design and timing. At the same time, parties of the left are expected to have an easier time implementing spending cuts while right parties are less vulnerable when proposing tax increases. Evidence from the politics of budget consolidation in Britain and Germany does not corroborate these hypotheses. Instead, it seems that party competition conditions the effects institutions and the partisan complexion of governments have on the politics of blame avoidance.