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Discusses the methods of arch assessment used by British Rail to assess the infrastructure of the bridges they own. Explains the Modified MEXE Method, and describes the mechanism, elastic and finite element methods. Concludes that new computer packages will result in better bridge stock management through greater feedback to assessment programmes.

In discussing the subject of bread, or indeed any subject, one is of course confronted by the initial difficulty of definition. Nothing is harder than to define any concrete thing, no matter how common and well‐known it may be. This is not surprising when we remember that no one has ever succeeded in defining a definition. Perhaps the best attempt to do so is Pascal's, in the “Port Royal Logic,” and it is easy to drive a coach and six through the rules which he lays down for definitions to conform to. The only things that can be strictly defined are mathematical abstractions, such as a circle, which are formed on natural objects by pruning away their multitudinous properties till only two or three which can be expressed by a short and indisputable definition are left.

Whatever views may be held with regard to the question of the total prohibition or otherwise of chemical preservatives in foods, there can be little doubt that the broad theory underlying the recommendations of the Departmental Committee is perfectly, sound and consonant with the best interests of the public and the honest manufacturer. The use of chemical preservatives of any kind is undesirable, and if permitted at all, such preservatives should be restricted to substances which are not foreign to the human body. Referring to the various articles and letters which have recently appeared in The Times, Professor F. Gowland Hopkins, D.Sc., F.R.S., F.I.C., observes:—

We are three teacher educators – Christi, Bethney, and Abby – representing literacy, educational leadership, and special education, who have collaborated in self-studies of our teacher education practices (S-STEP) over a period of five academic years. Through this collaborative engagement, we came to recognize the similarities and differences in our language and values found within each of our individual disciplinary cultures. It was through the juxtaposition of studying ourselves alongside of that of our colleagues that we further generated a shared culture and common understandings. In our chapter, we explore the ways in which self-study enabled collaboration with teacher educators representing different disciplines. The research brought to light specific disciplinary values, assumptions, and terminology that, when articulated and examined among critical friends, facilitated our ability to both broaden and deepen our individual understandings of teacher education practices in light of each other’s diverse disciplinary perspectives.

The purpose of this paper is to propose an adaptive neural-sliding mode-based observer for the estimation and reconstruction of unknown faults and disturbances for time-varying nonlinear systems such as aircraft, to ensure preciseness in the diagnosis of fault magnitude as well as the shape without enhancement of system complexity and cost. Fault-tolerant control (FTC) strategy based on adaptive neural-sliding mode is also proposed in the existence of faults for ensuring the stability of the faulty system.

In this paper, three strategies are presented: adaptive radial basis functions neural network (ARBFNN), conventional radial basis functions neural network (CRBFNN) and integral-chain differentiator. For the purpose of enhancement of fault diagnosis and isolation, a new sliding mode-based concept is introduced for the weight updating parameters of radial basis functions neural network (RBFNN).The main objective of updating the weight parameters adaptively is to enhance the effectiveness of fault diagnosis and isolation without increasing the computational complexities of the system. Results depict the effectiveness of the proposed ARBFNN approach in fault detection (FD) and approximation compared to CRBFNN, integral-chain differentiator and schemes existing in literature. In the second step, the FTC strategy is presented separately for each observer in the presence of unknown faults and failures for ensuring the stability of the system, which is validated on Boeing 747 100/200 aircraft.

The proposed adaptive neural-sliding mode approach is investigated, which depicts more effectiveness in numerous situations such as faults, disturbances and uncertainties compared to algorithms used in literature. In this paper, both the fault approximation and isolation and the fault tolerance approaches are studied.

For the enhancement of safety level as well as for avoiding any kind of damage, timely FD and fault tolerance have always had a significant role; therefore, the algorithms proposed in this research ensure the tolerance of faults and failures, which plays a vital role in practical life for avoiding any kind of damage.

In this study, a new neural-sliding mode concept is adopted for the adaptive faults approximation and reconstruction, and then the FTC algorithms are studied for each observer separately, whereas in previous studies, only the fault detection and isolation (FDI) or the fault tolerance problems were studied. Results demonstrate the effectiveness of the proposed strategy compared to the approaches given in the literature.

The impact of inclusion programs on children goes beyond the classroom. It reflects families’ and children’s experiences with school systems and communities. Inclusion is more than an issue of disability, a set of strategies, or a placement. It involves the need for all children to be a part of the classroom (Odom, Schwartz, & ECRII Investigators, 2002) and for their families to be a part of their educational experiences (Soodak & Erwin, 1995). The purpose of this chapter is to identify the barriers to and facilitators of inclusion in early childhood programs through listening to the voices of parents and analyzing effective inclusive practices in the literature. The chapter is organized around five themes derived from the voices of parents about their children with disabilities in preschool placements. These themes are then connected to the findings in the literature including the key characteristics of early childhood inclusion programs. The reader is encouraged to identify the barriers to and facilitators of inclusion that the parents share through their lived experiences for each theme as well as reflect on the ways in which schools can include and collaborate with parents to foster a partnership that supports all children.

HARROGATE will be notable as the venue of the Conference in one or two ways that distinctive. The Association Year is now to begin on January 1st and not in September as heretofore; and, in consequence, there will be no election of president or of new council until the end of the year. The Association's annual election is to take place in November, and the advantages of this arrangement must be apparent to everyone who considers the matter. Until now the nominations have been sent out at a time when members have been scattered to all parts of the country on holiday, and committees of the Council have been elected often without the full consideration that could be given in the more suitable winter time. In the circumstances, at Harrogate the Chair will still be occupied by Sir Henry Miers, who has won from all librarians and those interested in libraries a fuller measure of admiration, if that were possible, than he possessed before he undertook the presidency. There will be no presidential address in the ordinary sense, although Sir Henry Miers will make a speech in the nature of an address from the Chair at one of the meetings. What is usually understood by the presidential address will be an inaugural address which it is hoped will be given by Lord Irwin. The new arrangement must bring about a new state of affairs in regard to the inaugural addresses. We take it that in future there will be what will be called a presidential address at the Annual Meeting nine months after the President takes office. He will certainly then be in the position to review the facts of his year with some knowledge of events; he may chronicle as well as prophesy.

FINANCIAL fears are only less cruel than those of war, and lead men into extravagances which they would repudiate indignantly in their cooler moments. If the doings of the Economy Committee at Manchester in relation to children's libraries, as described in the article by Mr. Lamb in our last issue, are true, we have in them an example of a kind of retrenchment at the expense of the young which we hope is without parallel and will have no imitators. Some reduc‐tion of estimates we hear of from this or that place, but in few has the stupid policy which urges that if we spend nothing we shall all become rich been carried into full effect. Libraries always have suffered in times of crisis, whatever they are; we accept that, though doubtfully; but we do know that the people need libraries.