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Examines the potential of virtual reality as a user interface for computer systems for mass‐market applications. Describes Desk‐top Virtual Environments [DVE] and how it differs from full immersion visual reality. Analyses the response times and image qualities of the various systems and compares the pros and cons of DVE and VR. Concludes that DVE might well find its way onto the mass market in the form of computer games in the first instance with another possibility being through developments in the interactive television market.

The post-COVID environment presents significant challenges for organizations. Unfortunately, many leaders and organizations are living in “post-pandemic.” Leaders must reframe their approaches to employee relationships and the nature of the workplace. Employee experience, which combines, user experience, design thinking and organizational development, provides a methodology and perspective that is needed to address these significant changes. The purpose of this paper is to readdress employee experience and how its approach challenges conventional approaches to human resources (HR) and employee engagement and demonstrate how it can serve as an indispensable tool for transitioning to the new workplace.

Employee experience has become ubiquitous in organizations, but unfortunately the underlying sources and philosophies that distinguish this approach are often neglected. This paper demonstrates the new, irreversible organizational world created by COVID-19, reviews the origins of the concept, reviews the six principles previously introduced and then explicates three philosophical paradigmatic shifts that must be undertaken to take advantage of employee experience and address the new organizational challenges.

Employee experience can serve as a strategic tool for addressing post-COVID-19 organizational challenges. Past ideas about engagement will not work. Three shifts deriving from employee experience’s roots in user experiences, design thinking and emergent organization development must be adopted. Instead of thinking structurally in which things are primary, leaders need to take a relational perspective which insists on relational primacy. Because experience is holistic and embodied, a phenomenological perspective must take the place of the usual behavioral perspective. Finally, leaders and HR must see the task ahead as a collaborative codesign with employees, insisting on radical participation.

As with the medical challenges with the COVID-19 virus itself, the organizational challenges are new and have never been faced before. It is difficult to shift paradigms, challenge assumptions and redirect effort while maintaining operating organizations. Often, leaders and organizations are ill-equipped to address very novel situations from past experience and education. Much more research and practical implementations need to be conducted to continue to evolve the concept.

Organizations are facing many crises beyond the supply/demand economic issues caused by COVID-19. The social issues within the organizational world are often overlooked but having significant impact. Cultures have been attenuated and disrupted, employee expectations have changed and the remote job market has expanded opportunities for employment. As a result, retention, performance, loyalty and satisfaction have been negatively impacted. If organizations want to continue growth and productivity, they need to find new ways of working and operating.

The nature of work, organization and employee/organization relationship is in transition. Because much of people’s lives are spent in the workplace, this shift has significant implications for relationships within and beyond the workplace. COVID-19 has also had an impact on mental health, life satisfaction and other aspects of the human experience. Experience in the workplace and outside the workplace are converging and impacting each other. The new reality cannot be ignored or denied.

Many organizations, leaders and HR practitioners are approaching the new reality with outdated and ineffective tools from the pre-COVID-19 world, tools that were questionably effective then. Reclaiming the revolutionary underpinnings of employee experience is a necessary but often neglected action.

This paper aims to investigate the major causes of the nuclear power plant (NPP) disasters since 1950, elucidates the commonalities between them and recommends strategies to minimize the risk of NPP disasters.

This paper analyzes facts from five case studies: Chernobyl disaster, USSR 1986; Fukushima Daiichi disaster, Japan 2011; Three Mile Island incident, USA 1979; Chalk River Accident, Canada 1952; and SL-1 Accident, USA 1961. A qualitative approach is adopted to compare and contrast the major reasons that led to the accidents, and consequent social and technological impacts of the disasters on environment, society, economy and nuclear industry are analyzed.

Although each of the nuclear accidents is unique in terms of its occurrence and impacts, this research study found some common causes behind the accidents. Faulty system design, equipment failure, inadequate safety and warning systems, violation of safety regulations, lack of training of the nuclear operators and ignorance from the operators and regulators side were found to be the major common causes behind the accidents.

This paper recommends some of the nuclear disaster risk reduction strategies in terms of “lessons learned from the past accidents”. The findings of the research paper would serve as an information tool for the nuclear professionals for informed decision-making and planning for proper preventive measures well in advance so that the mistakes which led to the occurrence of accidents in the past are not repeated in the future.

1 Introduction Some interesting new developments have taken place in recent years in the field of ferritic stainless steel (1–16). As a material for chemical apparatus, the common highly alloyed chromium steels as listed in national standards (e.g. in the German Standard DIN 17440) have only found limited applications. The reasons are sensitivity of several of these chromium alloyed stainless steels to intergranular corrosion (especially after welding), lower corrosion resistance compared to austenitic stainless steels, and difficulties in fabricating (especially welding). It has been shown (1–16) that the intrinsic drawbacks of customary ferritics can be overcome by metallurgical measures, primarily keeping the amount of carbon and nitrogen extremely low. The solubility in the ferrite for these two elements in rather low, both occupying interstitial sites. Stainless steels of the type dealt with in this paper are therefore sometimes termed Extra Low Interstitial (ELI)‐ferritic stainless steels. At sufficiently low concentrations of carbon and nitrogen (and some other elements), the sensitivity of ferritic stainless steels to intergranular corrosion is definitely lowered, and their ductility at ambient temperature is increased, i.e. the transition temperature is lowered. An advantage of these steels is their resistance to stress corrosion cracking. They have, so far, shown no sensitivity against chloride stress corrosion cracking under realistic operating conditions. For this reason, cooling water systems using river water with a high chloride content represent a suitable field of application for these steels. They can be welded up to a wall thickness of 3mm without sensitisation and undue loss of impact strength so that tubes for heat exchangers can be made of these steels. Their development has led to alloys ranging from 18 Cr‐2 Mo‐0 Ni to about 28 Cr‐2 Mo‐4 Ni. The present paper will only deal with the 18 Cr‐2 Mo steel because this material can be compared in price and properties with the standard 18 Cr‐9 Ni‐2 Mo austenitic stainless steel. In addition, the material in question has now become available in the form of pipe and sheet.

To derive from the environmental risk and knowledge management literatures a model that integrates organizational form, democratic vision and epistemological needs of public agencies responsible for addressing environmental risks. To analyze the knowledge management practices of the United States Department of Energy (USDOE) that is responsible for cleaning up landscapes contaminated by 50 years of plutonium production.

The model was used as a framework for a case study analysis of the USDOE knowledge management practices.

Conceptual: a vision of democracy and an understanding of the type of knowledge process can facilitate organizational constancy. Organizational forms should be matched to knowledge process and democratic vision. Empirical: USDOE has behaved erratically in addressing environmental risks viewed through this model of knowledge management.

The model idealizes democratic visions, epistemological processes and organizational forms. Care should be taken in making predictions for the success or failure of an organizational approach based solely on this model.

Practically, the model aids scholars in making connections between knowledge management and public sector environmental risk management literatures; and provides managers with a systematic framework for relating democratic context knowledge production processes to particular organization forms. Use of this model particularly during agency restructuring may facilitate resolving environmental risks though improving organizational legitimacy, constancy, and knowledge generation capacity.

This is a first attempt at integrating two related but so‐far disconnected literatures (environmental risk management and knowledge management).

Sediment measurement is usually accessible on a periodic or distinct basis. The measurement of sediment (suspended and bedload), especially in the field, is vital in keeping essential data of sediment transport and deposition. Various techniques for measuring sediment have been used over time each with its merits and demerits. The techniques discussed in this paper for suspended sediment include bottle, acoustic, pump, laser diffraction, nuclear and optical. Other techniques for bedload measurement are; River bedload trap (RBT), CSU/FU bedload trap, Helley–Smith, Polish Hydrological Services (PIHM) device, pit and trough, vortex tube, radioactive traces and bedload–surrogate technologies. However, the choice of technique depends on multiple factors ranging from budget constraint, availability of equipment, manpower and data requirement. The purpose of this paper is to present valuable information on selected techniques used in sediment measurement, to aid researchers/practitioners in the choice of sediment measurement technique.

This paper presents a general review of selected field techniques used in sediment measurement (suspended and bedload). Each techniques mode of operation, merits and demerits are discussed.

This paper highlights that each technique has its peculiar merits and demerits. However, two techniques are generally preferred over others; the bottle sampling and the Helley–Smith sampler for measuring suspended and bedload sediment. This is because the applicability of these techniques is quite widespread and time-tested.

This review paper provides an in-depth description and comparison of selected existing field sediment measurement techniques. The objective is to ease decision-making about the choice of technique, as well as to identify the suitability and applicability of the chosen technique.

Purpose – The purpose of this paper is to know the types of mangrove and the status of the conservation of mangrove ecosystems in the area of Krueng Reuleng River, Leupung, Aceh Besar Regency.

Design/Methodology/Approach – Data collection on mangroves was retrieved using a Quadrat Sampling Method, the acquisition of information about the status of conservation of mangrove ecosystems was done using the interview method.

Findings – The results showed that there are four types of mangroves, and mangrove ecosystem conservation efforts have not been made by the people of Leupung. The conclusions of this study are as follows: the types of mangroves found in the area of Krueng Reuleng River are Nypa fruticans, Sonneratia alba, Acrostichum aureum, and Thespesia populnea. Conservation measures have not been undertaken to preserve the mangrove ecosystem in the area of Krueng Reuleng River.

Research Limitations/Implications – The location can be used as a site of practical research on the type of mangroves in the Krueng Reuleng River area for students studying biology.

Originality/Value – In addition to upgrading the data on the types of mangroves, this paper could be a reference for any relevant field.