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IN April 1962 there was an urgent need at Chelmsford for an additional laboratory if work in City and Guilds Electrical and Telecommunications Technicians second and third year courses was not to suffer in the immediate future.

For several years boys and girls in the lower sixth forms of grammar, secondary modern, and technical schools in the Chelmsford area have been selected for a week's industrial appreciation course in the Christmas holiday.

Most anger research has adopted a within-person view, focusing on the effects of experienced anger on a person's feelings, cognition, and behavior. Less research has examined the effects of anger expressed by one person on other people in the workplace. We review available literature on the interpersonal effects of anger and propose a theoretical framework that addresses two main questions (1) What mechanisms can explain the effects of observed anger on other people? and (2) What factors may strengthen or attenuate these effects? We propose that observed anger affects observers’ performance via emotional and cognitive routes that are interrelated, and that this effect depends on the properties of the expressed anger, the situation in which the anger occurs, and the task being performed by the observer.

The aim of this study was to observe how a user’s individual factors in a commercial weight-loss treatment app affect their perceived usefulness of its features and how they relate to each other.

The information was obtained from an online survey with a sample of 412 users from a branded app for a commercial weight-loss treatment using body mass index (BMI), self-efficacy, social support and perceived usefulness as variables.

Users with higher self-efficacy perceived the app’s features as more useful. However, BMI was not a factor except for the psycho-emotional support features, which individuals with obesity perceived as more useful. Likewise, it was found that there weren’t any significant differences in self-efficacy based on their BMI. Lastly, it was found that social support could not be used as a factor to predict self-efficacy.

This study helps understand how individual factors for behavioural change may affect the perceived usefulness of a weight-loss app. Furthermore, the significance of self-efficacy as an influencing factor provides useful information for companies and app developers alike when developing their branded apps.

This study contributes to the body of knowledge on factors affecting user perceptions of weight-loss apps. It also adds to the literature of branded apps as complimentary resources for companies, which has not been studied in detail.

A new approach called the “variational theory of complex rays” (VTCR) is developed for calculating the vibrations of weakly damped elastic structures in the medium‐frequency range. Here, the emphasis is put on the most fundamental aspects. The effective quantities (elastic energy, vibration intensity, etc.) are evaluated after solving a small system of equations which does not derive from a finite element discretization of the structure. Numerical examples related to plates show the appeal and the possibilities of the VTCR.

X‐ray lithography is an important technique in micro fabrication used to obtain structures and devices with a high aspect ratio. The X‐ray exposure takes place in a system composed of a mask and a photoresist deposited on a substrate (with a gap between mask and resist). Predictions of the temperature distribution in three dimensions in the different layers (mask, gap, photoresist and substrate) and of the potential temperature rise are essential for determining the effect of high flux X‐ray exposure on distortions in the photoresist due to thermal expansion. In this study, we develop a three‐dimensional numerical method for obtaining the temperature profile in an X‐ray irradiation process by using a hybrid finite element‐finite difference scheme for solving three‐dimensional parabolic equations on thin layers. A domain decomposition algorithm is then obtained based on a parallel Gaussian elimination for solving block tridiagonal linear systems. The method is illustrated by a numerical method.

Reviews the general literature of management relevant to the information and library profession, and that of the management of information and library services, published in 2001. Themes emerging at major conferences are noted. Issues of growing concern are identified together with those that appear to be becoming of lesser interest.

This paper aims to imitate a cownose ray to develop a fish robot with paired flexible multi-fin-ray oscillating pectoral fins (OPFs) and control it to accomplish vivid stable 3-D motions using central pattern generators (CPGs) and fuzzy algorithm.

The cownose ray’s asymmetric sine-like oscillations were analyzed. Then a cownose-ray-like fish robot named Robo-ray was developed, which has paired flexible multi-fin-ray OPFs to actively control the fin shape and two tail fins to control the depth. To solve the problem of coordinated control for multi-degree-of-freedom Robo-ray, CPGs were adopted. An improved phase oscillator as a CPG unit with controlled amplitude, phase lag, smooth frequency transition and asymmetric oscillation characteristic was established. Furthermore, the CPG-fuzzy algorithm was developed for vivid stable 3-D motions. The open-loop speed control, the closed-loop control of depth and yaw were established.

The kinematic comparisons indicate that Robo-ray imitates the cownose ray realistically. The experimental results of closed-loop are obtained that the depth error of Robo-ray is less than ±100 mm and the course error is less than ±3°. Furthermore, the comprehensive experiments demonstrate that Robo-ray has high mobility, stability and robustness.

This research makes the fish robot with OPF propulsion closer to practical applications in complex underwater environment, for instance, ocean explorations, water quality monitoring and stealth military reconnaissance. In addition, Robo-ray can be taken as a scientific tool for better understanding of the hydrodynamics of OPF batoid.

CONFERENCES are becoming difficult. Recently the chairman of the Ray Committee remarked that there were too many of them, and added that if they were held in Wigan rather than Bournemouth or such places they would not be well attended. The assumption is that we attend them for our pleasure only. We do find pleasure in them, but any delegate who goes through a Library Association Conference has done a week's work more strenuous than most men do in their busiest business weeks. In fact he is worked much too hard. Sir William Ray is too experienced a public man not to know why an assembly of several thousands of persons cannot descend on places which are without accommodation. In any case the Library Association has met in recent years in Leeds, Birmingham, Manchester and Glasgow, which have their amenities but are not exactly pleasure resorts.