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The safety assessment of engineering structures under repeated variable dynamic loads such as seismic and wind loads can be considered as a dynamic shakedown problem. This paper aims to extend the stress compensation method (SCM) to perform lower bound dynamic shakedown analysis of engineering structures and a double-closed-loop iterative algorithm is proposed to solve the shakedown load.

The construction of the dynamic load vertexes is carried out to represent the loading domain of a structure under both dynamic and quasi-static load. The SCM is extended to perform lower bound dynamic shakedown analysis of engineering structures, which constructs the self-equilibrium stress field by a series of direct iteration computations. The self-equilibrium stress field is not only related to the amplitude of the repeated variable load but also related to its frequency. A novel double-closed-loop iterative algorithm is presented to calculate the dynamic shakedown load multiplier. The inner-loop iteration is to construct the self-equilibrated residual stress field based on the certain shakedown load multiplier. The outer-loop iteration is to update the dynamic shakedown load multiplier. With different combinations of dynamic load vertexes, a dynamic shakedown load domain could be obtained.

Three-dimensional examples are presented to verify the applicability and accuracy of the SCM in dynamic shakedown analysis. The example of cantilever beam under harmonic dynamic load with different frequency shows the validity of the dynamic load vertex construction method. The shakedown domain of the elbow structure varies with the frequency under the dynamic approach. When the frequency is around the resonance frequency of the structure, the area of shakedown domain would be significantly reduced.

In this study, the dynamical response of structure is treated as perfect elastoplastic. The current analysis does not account for effects such as large deformation, stochastic external load and nonlinear vibration conditions which will inevitably be encountered and affect the load capacity.

This study provides a direct method for the dynamical shakedown analysis of engineering structures under repeated variable dynamic load.

High-rise tower structures supported by side frame structure and viscous damper in chemical industry can produce plasticity under dynamic loads, such as wind and earthquake, which will heavily influence the long-term safety operation. This paper aims to systematically study the optimization design of these structures by free vibration and dynamic shakedown analysis.

The transfer matrix method and Euler–Bernoulli beam vibration are used to study the free vibration characteristic of the simplified high-rise tower structure. Then the extended stress compensation method is used to construct the self-equilibrated stress by using the dynamic load vertexes and the lower bound dynamic shakedown analysis for the structure with viscous damper. Using the proposed method, comprehensive parametric studies and optimization are performed to examine the shakedown load of high-rise tower with various supported conditions.

The numerical results show that the supported frame stiffness, attached damper or spring parameters influence the free vibration and shakedown characters of high-rise tower very much. The dynamic shakedown load is lowered down quickly with external load frequency increasing to the fundamental natural frequency of the structure under spring supported condition, while changed little with the damping connection. The optimized location and parameter of support are obtained under dynamical excitations.

In this study, the high-rise tower structure is simplified as a cantilever beam supported by a short cantilever beam and a damper under repeated dynamic load, and linear elasticity for solid is assumed for free vibration analysis. The current analysis does not account for effects such as large deformation, stochastic external load and nonlinear vibration conditions which will inevitably be encountered and affect the load capacity.

This study provides a comprehensive method for the dynamical optimization of high-rise tower structure by combining free vibration and shakedown analysis.

The Equal Pay Act 1970 (which came into operation on 29 December 1975) provides for an “equality clause” to be written into all contracts of employment. S.1(2) (a) of the 1970 Act (which has been amended by the Sex Discrimination Act 1975) provides:

The author argues that we must stop and take a look at what our insistence on human labour as the basis of our society is doing to us, and begin to search for possible alternatives. We need the vision and the courage to aim for the highest level of technology attainable for the widest possible use in both industry and services. We need financial arrangements that will encourage people to invent themselves out of work. Our goal, the article argues, must be the reduction of human labour to the greatest extent possible, to free people for more enjoyable, creative, human activities.

We demonstrate in a laboratory experiment that the effectiveness of performance-contingent incentives is inversely related to risk-aversion levels. For about 16.5% of participants, performance fails to improve under performance-pay, and the probability of such failure increases with risk-aversion. This phenomenon works in part through the reduced effort level of more risk-averse individuals when effort level is positively correlated with risk exposure. It is also associated with higher self-reported levels of stress by more risk-averse people working under performance-contingent pay. We find no evidence of such stress causing decrements in the quality of effort affecting performance after controlling for effort level. However, controlling for effort, more risk-averse participants perform better under a fixed salary, leaving less room for improvement under performance-pay.

Due to the deformation between the pylon and the girder caused by single tension of cables, the previously tensioned steel strands have stress relaxation, resulting in the actual cable forces being less than the design cable forces. To compensate the stress loss caused by the single tension of cables, this paper aims to present a practical compensation algorithm of stress relaxation during the construction period.

From the perspective of the essential cause of the stress relaxation, finite element analysis is used to solve the tension control force of each steel strand after a rigorous theoretical formula derivation.

The deformation and tension control force of each steel strand decrease with the advance of the tension sequence, and the decline rate drops gradually. However, the calculated force values of the steel strand are in good agreement with the measured value as the cable length decreases.

The previous rough calculation methods for the tension force of steel strands cannot meet the accuracy, and the accurate calculation methods often include the solution of nonlinear equations, which complicate the calculating process. Otherwise, there are few studies on the compensation of stress loss by calculating the deformation of the steel strand during the tension process. So, it developed an accurate and efficient algorithm to determine the tension control forces.

A distinction must be drawn between a dismissal on the one hand, and on the other a repudiation of a contract of employment as a result of a breach of a fundamental term of that contract. When such a repudiation has been accepted by the innocent party then a termination of employment takes place. Such termination does not constitute dismissal (see London v. James Laidlaw & Sons Ltd (1974) IRLR 136 and Gannon v. J. C. Firth (1976) IRLR 415 EAT).

Examines the situation in the UK in some detail with regard to three aspects of the Charter of Fundamental Human Rights of the European Union. Looks at the aims, together with an analysis and appraisal. Considers, first, information and consultation rights with regards to the transfer of undertakings and redundancies, followd by the right to collective action and, lastly, protection in the event of unjustifiable dismissal. Presents case law throughout as examples. Concludes that the UK has attempted to prevent social and economic rights for workers from being included in the final charter despite fierce opposition. Compares this view together with the UK suspicion of Europe against the views of the other member states.

This study aims at identifying the consequences of adopting statutory rather than market basis in assessing damages due to contamination to land. Most valuations undertaken to assess compensation for damages due to contamination on land are done with valuation methods prescribed by law for the compulsory acquisition of land.

A total of 80 registered valuation firms with experience in both compulsory acquisition and damage assessment participated in a questionnaire survey to ascertain the methods adopted in valuing when determining the compensation payable as damages due to land contamination and the need for a framework for such valuations, in addition to some archival documents relating to the relevant laws and some purposively selected valuation reports, which were reviewed.

The results of the analysis indicate that the use of compulsory acquisition valuation methods results in inadequate damages, which engenders conflicts among the stakeholders. The absence of any framework for damage assessment is responsible for the current practice in the Niger Delta, and it is recommended that international best practices utilising market basis of valuation be adopted.

Most valuation methods available are useful for valuing commercial properties regularly traded in the market and not applicable to the Niger Delta, which is mostly rural with very few market transactions. It is expected that this study will enable oil and gas industry operators, professional valuers advising the land owners or operators in the industry and the government to differentiate compensation paid for compulsory acquisition and compensation required to placate those suffering losses due to contamination.

The findings will assist professional valuers to be more professional in valuing contaminated land devastated by oil spills.

Adopting the findings will engender a greater acceptability of the results of valuations undertaken in the wake of an oil spillage disaster and ensure a peaceful environment for the oil operators and the entire populace.

The findings of this study are expected to assist policymakers in emerging economies and professional valuers acting in these environments to avoid precipitating crises by adopting inappropriate valuation techniques when assessing damages due to contamination. This study is original and has not been published elsewhere.

This paper aims to analyze the impact that sustainable board governance has on corporate social responsibility (CSR) on the European capital market because of the current debate of future European regulations on the topic.

Based on a legitimacy and stakeholder theoretical framework, the author conducts a structured literature review and includes 86 quantitative peer-reviewed empirical (archival) studies on board gender diversity, sustainability board expertise and sustainability-related executive compensation and their impact on CSR variables.

Gender board diversity represents the most important variable in this literature review. The included categories of sustainable board governance positively influence both the total CSR and environmental outputs.

A detailed analysis of sustainable board governance proxies is needed in future archival research to differentiate between symbolic and substantive use of CSR. In view of the current European reform initiatives on sustainable corporate governance in line with the EU Green Deal project, future research should also analyze the interactions between the included sustainable board governance variables and their contributions to CSR.

As both stakeholder demands’ on CSR outputs and CSR washing have increased since the financial crisis of 2008–2009, firms should be aware of a substantive integration of sustainability within their boards of directors (e.g. because of composition and compensation) to increase their CSR efforts and long-term firm reputation.

This analysis makes useful contributions to prior research by focusing on sustainable board governance as a key determinant of CSR outputs on the European capital market. The European Commission’s future evidence-based regulations [e.g. the corporate sustainability reporting directive (CSRD) and the corporate sustainability due diligence directive (CSDD)] should be promoted.