Honeywell (United Kingdom)

There is evidence to suggest that whole school approaches to student well-being enhance not only mental health and resilience but also promote prosocial behaviour, pupil engagement and academic learning. ‘Positive education’ is gaining traction in both the US and Australia, often with more privileged schools. Interventions are primarily based in positive psychology but also have elements of community psychology where they aim to give teachers and students an authentic voice. When schools focus on the well-being of the whole child, this not only benefits individuals, but the communities in which they participate. Educational psychologists are in a unique position, especially in state schools. They have opportunities for conversations on well-being at all levels, to support teachers and offer in-service training. There is also an ethical issue about whether the profession acts in a pro-active way to advocate for the needs of vulnerable young people at a systemic level or is primarily reactive to demands. This paper is based in research on school change and student well-being. It summarises what it is possible to influence and which practices and processes are effective. It takes an ecological and optimistic position on change that entails sowing seeds for growth, building a team and promoting good practice.

Ported shroud is a cost-effective casing treatment that can greatly improve stability of centrifugal compressors. It is widely used in turbochargers and other applications where compressors with a wide flow range are required. This paper reviews the development of the ported shroud concept from its first conception in the 1980 s to its current various configurations and explores the underline mechanisms that deliver the performance improvement. It is explained that, by removing stagnant fluid from impeller inducer shroud end wall boundary-layer region and recirculating it to the impeller inlet, blade loading near the inducer shroud is increased with improved inlet suction. For transonic flow, the ported shroud weakens the shock wave and reduces flow separation on the inducer suction surface. It is argued that the effectiveness of ported shroud is a balance of blade loading and the flow loss inside the ported shroud cavity. The loss needs to be minimized if ported shroud is to be more effective. Blade loading may be increased by various methods, such as using high inducer blade turning and using full-bladed impellers. The blade loading can also be improved by removing flow swirl in ported shroud flow by vanes or imposing negative swirl by vanes in ported shroud. Circumferential flow variation caused by volute housing can be taken into account by variable pitch vanes or by variable port position.

We briefly introduce the Honeynet Project, describe the honeynet data collection tools and techniques currently in use by it's members, review the types of data collected and research published, and present some current and proposed infrastructures for capturing and sharing honeypot-derived network attack data.

The question of the merits of outsourcing facilities management remains relevant. This paper attempts to determine a clear distinction between out tasking and outsourcing, and then to provide a model to explain the advantages (pros) and disadvantages (cons) of this strategy by analysing the wants of both the client and supplier. Finally, it offers some guidance to assist with remedying the divergence identified.

In this paper, we explore the automatic explanation of multivariate time series (MTS) through learning dynamic Bayesian networks (DBNs). We have developed an evolutionary algorithm which exploits certain characteristics of MTS in order to generate good networks as quickly as possible. We compare this algorithm to other standard learning algorithms that have traditionally been used for static Bayesian networks but are adapted for DBNs in this paper. These are extensively tested on both synthetic and real-world MTS for various aspects of efficiency and accuracy. By proposing a simple representation scheme, an efficient learning methodology, and several useful heuristics, we have found that the proposed method is more efficient for learning DBNs from MTS with large time lags, especially in time-demanding situations. © 2001 John Wiley & Sons, Inc.

Abstract This paper, the opening address of the Canadian Museums Association 2005 meeting on research, offers a wide-ranging sweep of its position in today's museums, largely from a UK perspective. It suggests that many of those working as curators feel that they cannot pay the activity the regard it deserves. There are many factors which now make it difficult for research to be offered adequate priority when it has to co-exist with other museum functions, amongst which are the broadened responsibilities which museums must now shoulder. General studies on such a core subject are surprisingly sparse but a useful investigation of British museums, undertaken fairly recently, is examined.

Abstract This paper, the opening address of the Canadian Museums Association 2005 meeting on research, offers a wide-ranging sweep of its position in today's museums, largely from a UK perspective. It suggests that many of those working as curators feel that they cannot pay the activity the regard it deserves. There are many factors which now make it difficult for research to be offered adequate priority when it has to co-exist with other museum functions, amongst which are the broadened responsibilities which museums must now shoulder. General studies on such a core subject are surprisingly sparse but a useful investigation of British museums, undertaken fairly recently, is examined. Keywords: ResearchManagementCollectionsStrategic planningHistoryUnited Kingdom

Whilst the quality of the built-up environment of inner cities has received and is receiving considerable attention from politicians, architects, planners, and sociologists, the quality of the green environment has been and is being widely ignored. The need for a quasi-natural environment is generally alien to urban thinking, where the emphasis has been, and still is, concentrated on the creation of highly artificial, formal and over-managed landscapes. It is argued that the assumption that people only require a good social and physical environment is wrong, and that it is not sufficient just to supply houses, employment, transport, and shops purveying food and other prerequisites of life. Although to some extent this is appreciated in new towns, it has not penetrated the thinking in established urban areas.

Publication in the conference proceedings of EUSIPCO, Antalya, Turkey, 2005

Analyses the changes which have taken place in the financial services industry in recent years. Shows how customer expectations have changed and how customer power has increased with competition. Suggests that most of the industry at present fails to meet the new challenges, but identifies some notable exceptions.

Accurate average flow velocity determination is essential for flow measurement in many industries, including automotive, chemical, and oil and gas. The ultrasonic transit-time method is common for average flow velocity measurement, but current limitations restrict measurement accuracy, including fluid dynamic effects from unavoidable phenomena such as turbulence, swirls or vortices, and systematic flow meter errors in calibration or configuration. A new spatial averaging method is proposed, based on flexural ultrasonic array transducer technology, to improve measurement accuracy and reduce the uncertainty of the measurement results. A novel two-dimensional flexural ultrasonic array transducer is developed to validate this measurement method, comprising eight individual elements, each forming distinct paths to a single ultrasonic transducer. These paths are distributed in two chordal planes, symmetric and adjacent to a diametral plane. It is demonstrated that the root-mean-square deviation of the average flow velocity, computed using the spatial averaging method with the array transducer is 2.94%, which is lower compared to that of the individual paths ranging from 3.65% to 8.87% with an average of 6.90%. This is advantageous for improving the accuracy and reducing the uncertainty of classical single-path ultrasonic flow meters, and also for conventional multi-path ultrasonic flow meters through the measurement via each flow plane with reduced uncertainty. This research will drive new developments in ultrasonic flow measurement in a wide range of industrial applications.

A three-dimensional compressible flow model is presented to study the occurrence of weak rotating waves in vaneless diffusers of centrifugal compressors. The diffuser considered has two parallel walls, and the undisturbed flow is assumed to be circumferentially uniform, isentropic, and to have no axial velocity. Linearized 3D compressible Euler equations were casted on a rotating coordinate system traveling at the same angular speed as the wave cells. A uniform static pressure at the outlet of the diffuser was imposed. Complex functions of the solutions to the equations were obtained by a second-order finite difference method and the singular value decomposition technique. The influences of the inlet Mach number of undisturbed flow, inlet spanwise distribution of undisturbed radial velocity, and diffuser radius ratio on the rotating waves were studied and results show that (1) the critical flow angle and rotating wave speed are both affected by the Mach number. However, the angle only increases slightly with the Mach number while the wave speed increases rapidly with the Mach number; (2) inlet distribution has minor influences on diffuser instability but the wave speed increases with the inlet distortion; (3) diffuser instability increases rapidly and the wave speed decreases quickly with the diffuser radius ratio; and (4) backward traveling rotating wave may occur if diffuser is sufficiently long and the inlet Mach number is sufficiently small.

With increasing low-end torque and high-power requirements, passenger vehicle applications need large map-width compressor-stages at high-pressure ratio (3.0 and above). Compressor stages in which wheels operate in a normal housing exhibit limitations in stability at high-pressure ratio and in maximal flow capacity. The application of a ported shroud typically improves the surge characteristics of a centrifugal compressor. In this paper, an optimisation procedure for ported-shroud compressor stages was developed based on Design Of Experiment (DOE) procedure. Two DOE procedures are used. The first one is used to optimize the port location, wheel exducer width and diffuser width; the second is used to optimise the housing volute throat area, diffuser width and diffuser outlet radius. The compressor-stage performance was obtained by using a commercial CFD package. After the first DOE, an experimental DOE with a reduced design space was carried out to obtain the optimised port location and wheel exducer width. After the second DOE and optimization, only most promising configurations were manufactured for tests. The DOEs’ procedures and results as well as the CFD results are discussed and analyzed in the paper. Finally, the relative difference between the CFD and tests are discussed. In comparison to the baseline ported-shroud housing, the final configuration has improved map width by 9%, an increased pressure ratio by 0.2 and a higher peak efficiency by about 1 point.

This paper aims to detect early-stage lung tumors in deep-seated and superficial locations, and to precisely measure the size of the detected tumor using non-invasive microwave reflectometry over a super-wideband (SWB) frequency range. Human lung phantom and lung tumors are modeled using a multi-layer concentric cylinder structure and spherical-shaped inclusions, respectively. Firstly, a study on the dielectric properties of human torso tissues is carried out over an SWB frequency range of 1–25 GHz based on the Cole–Cole dispersion model. Intensive full-wave simulations of the modeled phantom under irradiation by a custom-designed SWB antenna array are then performed. Results show that small tumor sizes from 5 mm radius in both deep-seated and superficial locations of the lung tissue can be detected based on the contrast of reflection coefficients and reconstructed images produced from backscattered signals between normal and anomalous tissues. The potential of using SWB microwave reflectometry to successfully detect the lung tumors in their early stages and at different depths of the lung tissue has been demonstrated.

The arrival time detection probability and the measurement range of transit-time ultrasonic flow meters are undermined by the sound drift effect. One solution to this problem is utilizing a phased-array beam steering technique to compensate the bend of the ultrasonic beams. The design, the fabrication and the characterization of two-dimensional flexural ultrasonic phased arrays is investigated in this paper. A meter body with an inner diameter of 146 mmis machined to accommodate the arrays, and flow tests are carried out at different flow rates ranging from 0 to 2500 m <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> /h. Experimental results indicate that, with the increase of flow rate, the optimum steering angle of arrays increases from 30° to 40.5° when ultrasonic beams travel upstream and decreases from 30° to 22.5° when ultrasonic beams travel downstream. This proof-of-concept design demonstrates the potential of the flexural ultrasonic phased array as an accurate, economic, efficient, and robust solution for gas flow measurement.

In a previous publication (Guo &amp; Chen et al., 2007), the authors solved the unsteady, 3-D Navier-Stokes equations with the k-ε turbulence model using CFX software to show that there is a volute stall coincided with the stage stall of a turbocharger centrifugal compressor operated at 423m/s tip speed and the stage stall frequency is dictated by a volute standing wave. This paper presents the flow condition at the vaneless diffuser and volute from the same simulation at various mass flow rates from stage peak efficiency to deep stage stall. Time averaged flow conditions show that (1) the influence of exducer blade passing at the volute inlet rapidly diminishes at the compressor peak pressure ratio point and the influence vanishes when the stage is in stall; (2) only at the peak pressure ratio point, circumferentially averaged, spanwise distribution of radial velocity at the volute inlet has an inflection point and the distribution meets the requirement of the Fjo̸rtoft instability theorem; (3) in the volute discharge section, the flow stalls after the stage stalls and the vortex core at the cross sectional center of the section breaks down; (4) impeller total pressure rise curve has a flat region in the middle before the stage stalls and (5) diffuser stall triggers the stage stall and drives the volute into stall.

Information is presented on the creation and routine use of training simulators for large process plants. Based on actual experience, the authors discuss questions important for industrial practice: justification of investment, availability of mature technologies, proper approach to design, and project execution.

A new fault-tolerant inertial system architecture is emerging in commercial transport aircraft. This architecture. through sensor skew redundancy and fault tolerant electronics, provides improvement in the integrity, availability and cost of ownership. The system described is a Fault-Tolerant Air Data Inertial Reference System (FT/ADIRS). The system consists of a Fault-Tolerant Air Data Inertial Reference Unit (FT/ADIRU), a Secondary Air Data Attitude Reference Unit (SAARU) and six Air Data Modules (ADM). The FT/ADIRU is fault-tolerant and the SAARU is 100% monitored. The FT/ADIRU includes one additional level of redundancy above that required to dispatch the aircraft. This feature introduces the concept of deferred maintenance. Deferred maintenance allows airlines to schedule FT/ADIRU maintenance at their convenience and eliminates costs due to flight delays and cancellations caused by inertial system failures. The SAARU includes one level of redundancy above that required to provide the basic function. This feature provides fail-safe performance of the SAARU.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>

Honeynets are a sweet solution for security experts who want to keep up to date on the latest exploits used by online intruders. But as they evolve, unwitting crackers might find them a bitter pill to swallow. First conceived in the late 1980s, honeynets have gone through a couple of stages of development. These days, they can be logical or physical, and configured to be highly interactive or lower key. Honeywalls monitor intruders’ actions to stop damaging outbound traffic from compromising other systems, and the whole thing can be configured remotely, with honeypots in disparate locations logging nefarious activities on a global basis. Sun Tzu, the ancient Chinese general, summed up one of online security's basic principles over two millennia before electricity was invented. “If you know the enemy and know yourself, you need not fear the result of a hundred battles,” he said.

In 1991, Honeywell established an abnormal situation management (ASM) program involving participation of several petrochemical customers with operations in the continental USA (including companies that are not US-owned). The ASM consortium supports a number of activities and is partially funded by the US government as a research consortium. The consortium has two major activities: assessment audits of operating plants; and the development of a software-based diagnostic system-AEGIS. These two activities are briefly reviewed.