After service failure situations, firms often carry out transactional activities to achieve customer recovery (CR), using corrective actions to restore the exchange (e.g., economic and social ...compensations). Furthermore, during the service recovery process, firms can encourage activities of co-creation (CC) to prevent similar future failures. This paper discusses the importance of CC and service recovery process communication (RPC), in which customers are informed of the adoption of solutions to address the cause of the failure, so as to avoid the same problem happening again. Experimental studies investigate the impact, individually and together, of CR, CC, and RPC on satisfaction, repurchase intentions, and word of mouth. The results indicate that CC and RPC improve customer’s satisfaction, repurchase intentions, and word of mouth. Firms that want to maximize the return on their efforts to prevent service failures, should encourage CC, develop solutions to prevent future failure recurrence, and implement strategies of RPC. Firms must decide how to promote CC and which media to use for RPC.
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•Characterization of automotive catalysts to identify the main components.•Calcination and comminution increasing exposure of PGMs for subsequent recovery.•Investigating the ...possibility of leaching of PGMs by using three organic acids.•Recovery of over 90% of Pt and Pd in 6 M HCl and 20% (v/v) citric acid.
An efficient and environmentally friendly new process is described for the recovery of platinum group metals from spent automotive catalysts. The process consists of the application of mechanical processing followed by heat treatment and leaching, with the aim of reducing the use of acids that can have adverse effects in the environment. The extraction of PGMs was carried out using HCl associated with malic, formic, and citric acids. Evaluation was made of the effects of parameters including acid concentration, volumes of inorganic and organic acids, solid to liquid (S/L) ratio, and extraction time. The automotive catalyst powders were characterized using XRD, SEM/EDS, particle size distribution, and EDXRF techniques. The spent automotive catalysts contained reasonable concentrations of Pt and Pd. Over 90% of the Pt and Pd could be recovered in a leaching process using 6 M HCl, S/L ratio of 1:30, and 20% (v/v) citric acid. The findings showed that citric acid can be used in the recovery of PGMs from spent automotive catalysts, decreasing the use of aggressive and corrosive acids often employed in the recovery of these metals. Hence, the addition of organic acids can contribute to efficient and environmentally friendly processes for the recovery of Pt and Pd.
We considered the problem of forecasting the degradation recovery process of civil structures for prognosis and health management. In this process, structural health degrades over time but recovers ...when a maintenance intervention is performed. Maintenance interventions are typically recorded in terms of date and type. Such records can be represented as binary time series. Using binary maintenance intervention records, we forecast the process by using Long Short-Term Memory (LSTM). In this study, we experimentally examined how to feed binary time series data into LSTM. To this end, we compared the concatenation and reinitialization methods. The former is used to concatenate maintenance intervention records and health data and feed them into LSTM. The latter is used to reinitialize the LSTM internal memory when maintenance intervention is performed. The experimental results with the synthetic data revealed that the concatenation method outperformed the reinitialization method.
In the HVdc circuit breaker testing process, a thyristor is used to generate high current for the testing purpose. However, the reverse recovery process (RRP) of a thyristor can induce a significant ...overvoltage problem, which jeopardizes the reliable operation. It is important to model the RRP of a thyristor. The existing modeling methods usually omit the stray inductances in the circuit, which cannot describe the hard-switching process accurately. Therefore, this article proposes a novel method to model the RRP, considering the stray inductances. There are mainly three original contributions. First, the physical mechanism of the RRP is analyzed, describing the internal charge behavior and dividing the RRP into two stages. Second, this article provides a novel trigonometric exponential (TE) model of the thyristor voltage and current with analytical equations. Third, the extraction method of model parameters is also provided based on external circuit parameters and thyristor characteristics. In order to verify the proposed modeling method, a 1 kV/830 A IGBT-based circuit breaker is implemented with a thyristor to initialize the current. The experimental results show that the negative peak voltage induced by the RRP is as high as 4.26 kV, and the proposed TE model can precisely predict the overvoltage with a relative error of 7.51%.
Although the notion that recovery is a process rather than a state lies at the heart of recovery theory, the continuous cycle of depletion and replenishment of resources itself has not yet been ...investigated empirically. In the present article, I therefore build on recovery theory and on evidence from chronobiological research and adopt a temporal research approach that allows investigating change trajectories in fatigue over the course of the day. Furthermore, the role of sleep quality and psychological detachment in these change trajectories is investigated. Hypotheses are tested in an experience-sampling study involving 133 employees who were asked to provide fatigue ratings 4 times a day over 5 consecutive workdays. Growth curve analyses revealed that on average fatigue decreased in the morning, reaching a nadir around midday and then increased until bedtime. Additionally, daily sleep quality explained variation in individuals' fatigue change trajectories: When sleep quality was low, next day fatigue decreased between morning and midday and then increased again until bedtime; when sleep quality was high, fatigue remained stable until midday and then increased again between the end of work and bedtime. Theoretical implications for the recovery literature and practical implications are discussed in conclusion.
Following a radiological or nuclear emergency, workers, responders and the public may be internally contaminated with radionuclides. Screening, monitoring and assessing any internal contamination and ...providing necessary medical treatment, especially when a large number of individuals are involved, is challenging. Experience gained and lessons learned from the management of previous incidents would help to identify gaps in knowledge and capabilities on preparedness for and response to radiation emergencies. In this paper, eight large-scale and five workplace radiological and nuclear incidents are reviewed cross 14 technical areas, under the broader topics of emergency preparedness, emergency response and recovery processes. The review findings suggest that 1) new strategies, algorithms and technologies are explored for rapid screening of large populations; 2) exposure assessment and dose estimation in emergency response and dose reconstruction in recovery process are supported by complementary sources of information, including ‘citizen science’; 3) surge capacity for monitoring and dose assessment is coordinated through national and international laboratory networks; 4) evidence-based guidelines for medical management and follow-up of internal contamination are urgently needed; 5) mechanisms for international and regional access to medical countermeasures are investigated and implemented; 6) long-term health and medical follow up programs are designed and justified; and 7) capabilities and capacity developed for emergency response are sustained through adequate resource allocation, routine non-emergency use of technical skills in regular exercises, training, and continuous improvement.
Waste will become the major resource in the future circular economy. In particular, E-waste is a major sector growing at an annual rate of about 2 million tonnes (Mt) with rising users of electrical ...and electronic items worldwide. This is a consequence of versatility and affordability of technological innovation, thus resulting in massive sales and e-waste increases. Most end-users lack knowledge on proper recycling or reuse, often disposing of e-waste as domestic waste. Such improper disposals are threatening life and ecosystems because e-waste is rich in toxic metals and other pollutants. Here we review e-waste generation, policies and recycling methods. In 2019, the world e-waste production reached 53.6 Mt, including 24.9 Mt in Asia, 13.1 Mt in USA, 12 Mt in Europe. In Asia, China (10.1 Mt), India (3.23 Mt), Japan (2.57 Mt) and Indonesia (1.62 Mt) are the largest producers contributing to about 70% of the total world e-waste generated. Only 17.4% (9.3 Mt) of the world e-waste was recycled by formal means, and the remaining 82.6% (44.3 Mt) was left untreated or processed informally. As a consequence, most countries have framed policies to provide regulatory guidelines to producers, end-users and recyclers. Yet the efficiency of these local policies are limited by the transfer of products across borders in a globalized world. Among formal recycling techniques, biohydrometallurgy appears most promising compared to pyrometallurgy and hydrometallurgy, because biohydrometallurgy overcomes limitations such as poor yield, high capital cost, toxic chemicals, release of toxic gases and secondary waste generation. Challenges include consumer’s contempt on e-waste disposal, the deficit of recycling firms and technology barriers.
The recovery of spent lithium-ion batteries (LiBs) has critical resource and environmental benefits for the promotion of electric vehicles under carbon neutrality. However, different recovery ...processes will cause uncertain impacts especially when net-zero-carbon-emissions technologies are included. This paper investigates the pyrometallurgical and hydrometallurgical recovery processes for spent ternary LiBs in China based on life cycle assessment framework, then simulates the environmental impacts under different carbon neutrality scenarios, in which the decarbonization of electricity generation, the reconstruction of industrial processes, and the promotion of hydrogen are considered. Results suggest that the current environmental impacts of pyrometallurgical recovery process is greater than that of hydrometallurgical recovery process. Abiotic Depletion Potentials of resources and fossil fuels (ADP element, ADP fossil) and Human Toxicity Potentials are the main indicators that cause these differences. Besides, a multi-scenarios simulation is conducted considering the innovation of carbon neutral technology and expansion of EVs market. It is found that the improvement in energy structure and industrial processes will significantly affect the environmental performance of each recovery process. The pyrometallurgical recovery process has great potentials to improve environmental benefits with net-zero transition of energy system.
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Objective: To assess the influence of participation in spiritual activities on the recovery process of individuals with dual pathology. Methods: A descriptive observational study with a sample of 20 ...users treated internally in the Therapeutic Community: Ayuda a la Recuperación de Politoxicómanos de Málaga, in Málaga, Spain. Spirituality was assessed using the Parsian and Dunning Spirituality Questionnaire, which has been validated in Spanish, and the recovery process was examined through focus groups. Results: The mean spirituality score was 2.9 on a scale of 0-4, where 4 corresponds to "totally agree," based on statements about spirituality. The focus groups showed that users mostly associate spirituality with religion, not with ethics and morality, and that users in the recovery process desire to implement spiritual activities in their treatment. Conclusions: Performing spiritual activities positively impacts the recovery process of users with dual pathology.
Objetivos: medir el impacto de la participación en actividades espirituales en el proceso de recuperación de patología dual. Métodos: estudio observacional descriptivo con metodología mixta realizado con una muestra de 20 usuarios hombre, tratados en régimen interno en la Comunidad Terapéutica (CT): Ayuda a la Recuperación de Politoxicómanos de Málaga (ARPOM), en Málaga, España. La espiritualidad se ha medido según el Cuestionario de Espiritualidad de Parsian y Dunning validado al español; y el proceso de recuperación, a través de grupo focal. Resultados: la puntuación media de la espiritualidad ha sido de 2,9 en un rango de 0-4, donde 4 se corresponde a “totalmente de acuerdo” en base a afirmaciones realizadas sobre la espiritualidad. Los grupos focales mostraron que los usuarios en su mayoría asocian la espiritualidad a la religión, y no a la ética y moral; y que su deseo en el proceso de recuperación es implementar la realización de actividades espirituales en su tratamiento. Conclusiones: la realización de actividades espirituales influencia positivamente el proceso de recuperación de los usuarios con patología dual.
Substrate inhibition is one of the key factors that threatens the stability of anaerobic ammonia oxidation (anammox) reactors. Most of the current studies have focused on the inhibition of anammox by ...substrates; however, little attention has been given to the recovery process and microbial community changes in anammox reactors after inhibition. To remediate the damage substrate inhibition can do to anammox systems, the study investigated the recovery process of an anammox reactor that was inhibited by high substrate concentrations. The results showed that a reduction in the ratio of influent NO2−-N to NH4+-N from the theoretical stoichiometric ratio of 1.32 to 0.5 was conducive to the rapid recovery of anammox system performance. The analysis of the microbial community structure indicated that the relative abundance of the primary anammox bacteria on the biofilm carriers and mixed sludge was 19.51 % and 9.92 %, respectively, after reactor recovery. Biofilms played an important role in resisting reactor destabilization.
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