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Discusses the 27 papers in ISEF 1999 Proceedings on the subject of electromagnetisms. States the groups of papers cover such subjects within the discipline as: induction machines; reluctance motors; PM motors; transformers and reactors; and special problems and applications. Debates all of these in great detail and itemizes each with greater in‐depth discussion of the various technical applications and areas. Concludes that the recommendations made should be adhered to.

The purpose of this paper is to show how in a converged network, all services are provided over the same network infrastructure. This obfuscates the costs of the different services in an overall sunk cost. When deploying a new service over the network it is important to know the price that will cover the costs incurred by this service. This paper aims to investigate different approaches to calculate this price, to propose an optimal calculation approach and to estimate the sensitivity of this approach to changes in the inputs or when the inputs will recursively depend on the price set for the service.

The paper uses existing cost allocation schemes to this particular problem and within simulations, it investigates their outcome on the bottom price margin. Additionally dedicated Monte‐Carlo simulations give information on general sensitivity and iterative simulations are used for detecting the impact of this recursive influence of price on its inputs.

The optimal calculation approach uses a combination of incremental allocation and full allocation which places a bottom margin on the price which is both sustainable and competitive in the long run. Simulations show large differences of up to 50 percent with other approaches. Additionally the simulations indicate the importance of the length of the calculation horizon as a too small calculation horizon could also lead to differences of up to 50 percent. Sensitivity results indicated a low impact of changes on the bottom margin obtained using this optimal calculation approach and a much higher impact on the non‐optimal margins. Finally iterative calculations showed the importance of highly detailed market research as a 10 percent mismatch between market‐research implicit price and calculated price margin will lead to at least 10 percent difference and might lead to up to 25 percent difference.

The paper links the research field of cost allocation and bottom up cost calculation to the pricing margins calculated in a typical business case evaluation phase. It also links the pricing recursively to adoption and completes the calculations in an iterative manner. Finally the research is completed with sensitivity analysis of the results to changes in the input adoption.

The purpose of this paper is to identify and describe how calculations are used in the early phase of strategic capital investment projects (SCIPs) in the mining context and thereby create an understanding of what calculations do in these situations.

The authors conducted a case study based on interviews with project managers, controllers and top-level managers, as well as documents and observations.

The empirical evidence provides key insights into the different uses of calculations in the early phase of SCIPs in the mining industry. The authors found evidence that calculations in the early phase of SCIPs are used to generate ideas, support learning and discussions, evaluate decisions and act as a mediating device.

The paper is based on a single organization, and therefore, the findings of the paper are limited to theoretical generalization.

The study has practical implications directed toward top management, controllers and project managers working with SCIPs. This study suggests that calculations in the early phase are used to unite and create a shared view in the early phase rather than to present rational answers to different investment decision. Calculations can also be used to direct attention toward important areas, sort out and prioritize among ideas, communicate a shared view and function as a template. Thus, calculations are essential in the early phase as they help to transform activities into actions.

This paper contributes to the accounting literature in which it has been emphasized that we still know little of strategic capital budgeting processes, with insights into the multiple uses of calculations in the early phase of SCIPs. We also argue that calculations act as mediating devices in the early phase of SCIPs as they provide a common frame of reference and a basis for action.

The purpose of this paper is to improve the computational speed of solving nonlinear dynamics by using parallel methods and mixed-precision algorithm on graphic processing units (GPUs). The computational efficiency of traditional central processing units (CPUs)-based computer aided engineering software has been difficult to satisfy the needs of scientific research and practical engineering, especially for nonlinear dynamic problems. Besides, when calculations are performed on GPUs, double-precision operations are slower than single-precision operations. So this paper implemented mixed precision for nonlinear dynamic problem simulation using Belytschko-Tsay (BT) shell element on GPU.

To minimize data transfer between heterogeneous architectures, the parallel computation of the fully explicit finite element (FE) calculation is realized using a vectorized thread-level parallelism algorithm. An asynchronous data transmission strategy and a novel dependency relationship link-based method, for efficiently solving parallel explicit shell element equations, are used to improve the GPU utilization ratio. Finally, this paper implements mixed precision for nonlinear dynamic problems simulation using the BT shell element on a GPU and compare it to the CPU-based serially executed program and a GPU-based double-precision parallel computing program.

For a car body model containing approximately 5.3 million degrees of freedom, the computational speed is improved 25 times over CPU sequential computation, and approximately 10% over double-precision parallel computing method. The accuracy error of the mixed-precision computation is small and can satisfy the requirements of practical engineering problems.

This paper realized a novel FE parallel computing procedure for nonlinear dynamic problems using mixed-precision algorithm on CPU-GPU platform. Compared with the CPU serial program, the program implemented in this article obtains a 25 times acceleration ratio when calculating the model of 883,168 elements, which greatly improves the calculation speed for solving nonlinear dynamic problems.

The purpose of this paper is to offer a critical analysis of today's most common calculation methods for maintenance budgets in Europe. The methods are quantitatively validated using the real lifecycle data of 17 exemplary buildings. As a result, a new approach for the budgeting of maintenance measures is suggested which helps to define the real budgeting costs more accurately.

The paper starts with a theoretical definition and critical discussion of the different budgeting methods. All methods are quantitatively validated using real data analysis. Analysed is the lifecycle data of 17 school or office buildings. The maintenance costs previously calculated using the existing calculation methods can thus be contrasted with the real maintenance costs and validated. The development of a new calculation method aims at the elimination of the shortcomings of the existing methods.

The paper finds that the calculation methods used today are only partially suitable for the prediction of the financial requirements of building maintenance. Real‐life building maintenance costs follow certain cycles and change considerably over time. Recently, calculation methods particularly underestimate the first big maintenance peak which is reached approximately 30 years after a building's construction. It also became clear that it is essential to include certain influencing factors into the calculation, as the analytical methods do. The findings lead to the development of a new calculation method called practical adaptive budgeting of maintenance measures. This method is the first to differentiate between annual and one‐off maintenance measures and includes empirically determined correcting factors to take into account specific building characteristics.

This paper's findings refer to the examination of 17 sample buildings. In order to be able to generalise the results, more research needs to be done using a higher number of sample buildings.

This paper contributes to the improvement of the prospective calculation of maintenance budgets. The new calculation method is the first to enable maintenance experts to determine their maintenance budgets in a transparent and scientific way so that the required financial means to carry out necessary maintenance measures can be made available at the right time.

Based on real maintenance data, it becomes possible for the first time to verify and validate theoretic calculation approaches from literature. The results are new findings that are useful in science as well as in real life.

The main purpose of this study was to propose theoretical calculation models to evaluate the theoretical bending strengths of welded wide-flange section steel beams with local buckling at elevated temperatures.

Steady-state tests using various test parameters, including width-thickness ratios (Class 2–4) and specimen temperatures (ambient temperature, 400, 500, 600, 700, and 800°C), were performed on 18 steel beam specimens using roller supports to examine the maximum bending moment and bending strength after local buckling. A detailed calculation model (DCM) based on the equilibrium of the axial force in the cross-section and a simple calculation model (SCM) for a practical fire-resistant design were proposed. The validity of the calculation models was verified using the bending test results.

The strain concentration at the local buckling cross-section was mitigated in the elevated-temperature region, resulting in a small bending moment degradation after local buckling. The theoretical bending strengths after local buckling, evaluated from the calculation models, were in good agreement with the test results at elevated temperatures.

The effect of local buckling on the bending behaviour after the maximum bending strength in high-temperature regions was quantified. Two types of calculation models were proposed to evaluate the theoretical bending strength after local buckling.

The purpose of the paper is to present component matching and off-design calculations using generic components maps.

Multi objective hybrid optimization code is integrated with turbojet function code. Both codes are developed for the research study. Initially, methodology is applied on a numerical propulsion system simulation (NPSS) example engine cycle calculations. Effect of matching constants are shown. Later, component matching and application is done on JetCat engine. Calculations are compared with measured test data. And additional operating conditions are calculated using the matched component constants.

Obtained matching constants provided very good results with NPSS example and also JetCat test measurements. Optimization algorithm is practical for turbojet engine component matching and off-design calculations. Off-design matching provides information about the turbine and exhaust areas of an unknown turbine engine. Thus it is possible to perform off design calculations at various operating conditions. Finding detailed turbine maps is difficult than finding compressor maps. In that case characteristic turbine curve may be a good alternative.

Selected component maps and the target engine components should be similar characteristics. For a one/two stage turbine, characteristic curves can be applied. Validation should be extended on different type of compressor and turbines.

Operators and researchers usually need more information about the available turbojet engines for increasing the effective usage. Generally, manufacturers do not provide such detailed information to public. This study introduces an alternative methodology for engine modeling by using generic component maps and thus obtaining information for off-design calculations. User is flexible for selecting/scaling the compressor and turbine maps.

A hybrid optimization code is used as a new approach. It can be used with other engine functions; for instance functions corresponding to turboshaft or turbofan engines, by modifying the engine function. Number of input parameters and objective functions can be modified accordingly.

It has been well known that the quantum zero‐point energy (ZPE) cannot be conserved in simulations of atoms and molecules dynamics based on classical mechanics. The purpose of this paper is to examine fundamental issues related to the treatment of quantum ZPE constraint in simulations of atoms and molecules dynamics.

The ZPE is well known to be a quantum mechanical expectation value that is equivalent to an ensemble average when this value is interpreted to classical mechanics. An important point is that the ensemble‐averaged energies on simulations are expected to obey the ZPE criteria rather than those of individual simulation. The point is elucidated using quasiclassical trajectory calculations with a popular hydrogen atom‐diatom direct collision process incorporating a potential energy surface of a triatomic hydrogen system.

The results obtained by using standard classical trajectory calculations agree well with the quantum calculations. Using them, the author found that the classical results remain valid even if some trajectory calculations have vibrational energies that are less than the ZPE.

It is found that the ensemble‐average of each trajectory calculation can provide results that are consistent with quantum mechanical ones that obey the ZPE criteria, without the introduction of any additional constraint conditions for atoms and simulation algorithms.

The aim of the paper is to find the effective algorithms of electromagnetic torque calculation.

The proposed algorithms are related to the analysis of electrical machines using the methods of equivalent magnetic networks. The presented permeance and reluctance networks are formulated using FE methods. Attention is paid to the algorithms of electromagnetic torque calculation for 3D models. The virtual work principle is applied. The principle is adapted to the discrete network models. The network representations of Maxwell's stress formula are given.

The proposed method of electromagnetic torque calculation can be successfully applied in the 3D calculations of rotating electrical machines. It can be used for scalar and vector potential formulations. The obtained results and their comparison with the measurements show that the method is sufficiently accurate.

The presented formulas of electromagnetic torque calculation are universal and can be successfully applied in the FE analysis of electrical machines using nodal and edge elements.

The purpose of this paper is to find the geometry of a crack within a conductive plate and its parameters, on the basis of non-destructive testing, using eddy currents. The input data represents the measured values of magnetic flux density within the centre of the excitation coil.

The position of a crack can be determined by taking into consideration any change in the magnetic flux density between the measured points. The depth and width are determined through the use of a finite element model.

These calculations are the basis for determining a function that explains how magnetic flux density changes if the depth or width has changed. Jacobi's matrix is calculated using the determined functions’ analytical derivatives.

After wards, through the Newton-Raphson iterative procedure using the finite element method calculation results, the crack-depth and width can be obtained, this being one of the objectives in this paper. The suitability of the presented method was verified by the experimental example.