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Interactions of different additive types for antiwear/friction modification on surfaces can be synergistic or antagonistic in nature. This paper aims to investigate whether there are interactions between different additives in the adsorption process and whether they synergistic or antagonistic. The yielded correlations will be validated with tribological experiments to answer the question whether synergistic effects in adsorption also lead to synergistic effects in wear reduction.

In a representative study, zinc dialkyl-dithiophosphate and dithiophosphate were elaborated in combination with two different friction modifiers, a glycerol monooleate and an organic friction modifier. As base oils, mineral oil and poly alpha olefine were used. The adsorption behavior was studied via quartz crystal microbalance with dissipation using Fe₂O₃ coated quartz crystals. The tribological performance was evaluated in a ball-on-three disk tribometer. White light interferometry was used to determine the wear volume and X-ray photoelectron spectroscopy depth profiles of the tribofilms were obtained on selected systems.

The combination of dithiophosphate and an organic friction modifier (OFM) revealed a synergistic effect in terms of wear. If the initially formed films are viscoelastic, the third body formation during a tribo experiment is more pronounced and thereby wear can be reduced. As a mechanism, the adsorption of the OFM on the formed antiwear layer is proposed.

Correlating the analytical findings with performance experiments provides further understanding of the interactions between different constituents and their implications on film formation processes and wear reduction mechanisms.

The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-07-2019-0293/

A collection of essays by a social economist seeking to balance economics as a science of means with the values deemed necessary to man′s finding the good life and society enduring as a civilized instrumentality. Looks for authority to great men of the past and to today′s moral philosopher: man is an ethical animal. The 13 essays are: 1. Evolutionary Economics: The End of It All? which challenges the view that Darwinism destroyed belief in a universe of purpose and design; 2. Schmoller′s Political Economy: Its Psychic, Moral and Legal Foundations, which centres on the belief that time‐honoured ethical values prevail in an economy formed by ties of common sentiment, ideas, customs and laws; 3. Adam Smith by Gustav von Schmoller – Schmoller rejects Smith′s natural law and sees him as simply spreading the message of Calvinism; 4. Pierre‐Joseph Proudhon, Socialist – Karl Marx, Communist: A Comparison; 5. Marxism and the Instauration of Man, which raises the question for Marx: is the flowering of the new man in Communist society the ultimate end to the dialectical movement of history?; 6. Ethical Progress and Economic Growth in Western Civilization; 7. Ethical Principles in American Society: An Appraisal; 8. The Ugent Need for a Consensus on Moral Values, which focuses on the real dangers inherent in there being no consensus on moral values; 9. Human Resources and the Good Society – man is not to be treated as an economic resource; man′s moral and material wellbeing is the goal; 10. The Social Economist on the Modern Dilemma: Ethical Dwarfs and Nuclear Giants, which argues that it is imperative to distinguish good from evil and to act accordingly: existentialism, situation ethics and evolutionary ethics savour of nihilism; 11. Ethical Principles: The Economist′s Quandary, which is the difficulty of balancing the claims of disinterested science and of the urge to better the human condition; 12. The Role of Government in the Advancement of Cultural Values, which discusses censorship and the funding of art against the background of the US Helms Amendment; 13. Man at the Crossroads draws earlier themes together; the author makes the case for rejecting determinism and the “operant conditioning” of the Skinner school in favour of the moral progress of autonomous man through adherence to traditional ethical values.

Most adults do not follow the minimum requirements for physical activity despite the benefits such activity can provide toward improving quality of life. On average, an adult spends 60% of daily hours in the workplace, making it essential to create working environments that are favorable to avoiding harmful effects on the health of workers. Toward this end, the application of physical activity programs in a work context is one of the possible interventions. This study aims to carry out a systematic review of the literature to identify the impact of physical activity programs applied in the workplace, on employee wellness and organizational productivity.

The search for reports was carried out in two databases, namely, Thomson Reuters Web of Science and Scopus, according to several inclusion and exclusion criteria. The Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) was applied to ensure the quality of the study. Microsoft Excel 2016 was used to organize the database to support the data analysis.

The sample comprised 64 reports published in international journals between 1986 and 2019. From these studies, six thematic clusters were formed: Workplace Physical Activity Interventions, Workplace Wellness, Physical Activity and Organizational Performance, Barriers to Developing Physical Activity Programs in the Workplace, Physical Activity and Sedentary Occupations and Workplace Physical Activity Incentives. The analysis of these clusters confirmed that the implementation of physical activity programs in this context could represent beneficial effects for workers and the organizational system by contributing to a reduction in the rates of absenteeism and presenteeism. However, there are still many organizations that do not implement such programs.

The results of this study are essential for managers of organizations to be able to implement physical activity programs in a work context, similarly to the application of a strategy of corporate social responsibility in an intra-organizational environment. This research may also be useful for professionals in the areas of sports and physical exercise, who want to build their business around physical exercise programs applied to a work context.

Within the past 20 years hiking and backpacking have enjoyed rapid growth among Americans as favorite outdoor activities. From 1965 to 1977 the number of hikers almost tripled, from 9.9 million to 28.1 million, while national forest visitor days among hikers and mountaineers increased from 4 million in 1966 to 11 million in 1979. Accompanying this growth in interest has been a boom in books about the sport. These include both “how‐to‐do‐it” volumes and guides to specific geographical areas. Each year brings another spate of books, yet to this compiler's knowledge no bibliography of hiking guides to the Rocky Mountains, one of North America's premier outdoor regions, has yet been attempted. This bibliography is an effort to correct that situation.

The purpose of this paper is to provide an overview of the last 50 years of empirical research on leaders' influence on employee absenteeism. Furthermore, the aim is to direct future management research by identifying what is still undiscovered regarding areas such as leadership concepts, measurements of absenteeism, methodology and country-specific contexts of the studies.

This is a qualitative review which is suitable as the literature on leadership and employee absenteeism is still emergent and characterized by heterogeneity in terms of operationalization of absenteeism and leadership concepts, respectively, as well as types of analyses.

This review identifies different aspects of leadership affecting employee absence, i.e. leadership behaviours (i.e. task, relational, change, passive), leadership styles, leaders' social modelling and attitudes, and leaders' management of health and absence. Furthermore, a number of gaps in extant research are identified as well as a research agenda is provided.

This review is the first of its kind and hence contributes more profound insights into leaders' influence on employee absenteeism. Leaders as a factor explaining employee absenteeism have only played a minor role, in large theoretical contributions, and the exact behaviour and style is not elaborated much in the literature. Thus, this paper provides practical and theoretical considerations over the role of leaders in shaping employee absenteeism.

The objective of this study was to examine the significant factors leading to employee alienation in post-merger integration (PMI).

Data were collected from 482 middle- and low-level employees in two organizations in the real estate and banking sectors in the United Arab Emirates. The analysis was carried out using structural equation modeling (SEM).

Organizational justice, employee commitment, organizational trust, perceived effectiveness of human resource (HR) initiatives and employee communication strategy played an important role in developing or mitigating a feeling of alienation among employees during PMI. Employee tenure in the organization affected individual work performance.

The study was limited to middle- and low-level employees and did not consider other organizational variables important in mergers. This study will help merger strategists to deliver appropriate HR practices during PMI, facilitating mitigation of uncertainties among employees and maximizing their trust and commitment.

The study results will help organizations understand employee trust, commitment and determinants in an emerging economy.

Pricing the shipping surcharge is a major strategic decision for online retailers, and free shipping promotions are becoming more common among online retailers. The purpose of this research is to examine the effect of last mile pricing strategies on customer attraction and retention in the hypercompetitive online retailing industry. Specifically, this paper investigates the effect of partitioning the shipping surcharge on consumer logistics service quality (LSQ) perceptions and, in turn, purchase behavior.

Employing signaling theory and expectation–disconfirmation theory, hypotheses are derived for two specific points in an online purchase scenario: prepurchase and following a logistics disruption. The hypotheses are tested using a scenario-based experiment with manipulations for the level of shipping surcharge partitioning and the presence of a logistics disruption.

The results suggest that partitioned shipping surcharges influence prepurchase expectations of LSQ satisfaction and amplify the negative effects of logistics disruptions. This, in turn, drives the purchase and repurchase intentions.

The findings inform online retailers of the perceptual and behavioral effects of last mile pricing strategies. Specifically, this research demonstrates how and under what conditioning partitioning the shipping surcharge can influence the attraction and retention of online customers.

This study integrates pricing and LSQ research to assess the black box of consumer purchase behavior. This is one of the first studies to empirically contrast the effects of last mile pricing strategies on consumer expectations and perceptions of LSQ.

While a return to work following trauma exposure can be therapeutic, this is not always so. As with many topics related to traumatic stress in organizations, several contingency factors complicate the effort to draw an overarching conclusion about whether returning to work is therapeutic. The purpose of this paper is to present important determinants of whether work is therapeutic or triggering for those with traumatic stress conditions. The need for contingency approaches in the study of traumatic stress in organizations is illustrated.

Literature on traumatic stress in organizations is reviewed.

Three of the key determinants of whether a return to work is therapeutic or triggering for traumatic stress sufferers are trauma-type contingencies, condition-type contingencies and work-setting contingencies. For instance, human-caused and task-related traumas are more likely than natural disasters to make a return-to-work triggering. Additionally, the time since developing a traumatic stress condition is inversely related to the degree of improvement in that condition through the experience of working. Moreover, managerial actions can affect how therapeutic an employee’s return to work is.

These findings suggest the challenges of reintegrating a traumatized employee to the workplace can be highly situation-specific. Careful consideration of the traumatic event suffered by each traumatic stress victim, their traumatic stress condition, and the work setting to which they would return are recommended.

Promoting mental health in organizations can contribute to employers’ social performance.

Examination of the factors that complicate predicting whether work is therapeutic posttrauma demonstrates how contingency approaches can advance research on trauma in organizations.

The purpose of this paper is to examine “black box” links between HRM innovations and organizational performance by investigating the perspective of a workforce often excluded from the HR realm. Professional Independent Contractors (IPros) play a vital role in achieving workforce flexibility and innovation. While the use of such arrangements has been examined often using a compliance-oriented lens, the authors explore the value of adding a commitment aspect.

In total, 375 IPros working in Australian organizations completed an online questionnaire distributed by a national business support services provider.

Results show organizational support significantly predicted work engagement and affective commitment. Self-efficacy, age and gender were also significant predictors.

The cross-sectional nature of this study and reliance on self-reported data limit the reliability of the findings. In addition, the findings may be specific to the Australian labor market.

The study present the views of a difficult to reach population and the findings suggest by adopting an innovative hybrid commitment-compliance HR configuration, practitioners may positively increase desirable contractor outcomes.

Concerns that organizational imperatives for efficiency, quality and high performance will be compromised by considering the human side of non-employee work arrangements are not supported. Indeed, as previously outlined, much of the concern with the employee/non-employee dichotomy is legally based and an artefact of a system of labor law that in many settings has failed to move with the times.

Few investigations of the impact of high commitment HRM practices have incorporated the perspective of professional, non-employees. While IPros are recipients of compliance focused contractor management practices, carefully integrated commitment-based HRM aspects have the potential to deliver positive outcomes for both individuals and organizations.

This paper aims to investigate the wear behaviour of different materials for cylinder liners and piston rings in a linear reciprocating tribometer with special focus on the wear of the cylinder liner in the boundary lubrication regime.

Conventional nitrided steel, as well as diamond-like carbon and chromium nitride-coated piston rings, were tested against cast iron, AlSi and Fe-coated AlSi cylinder liners. The experiments were carried out with samples produced from original engine parts to have the original surface topography available. Radioactive tracer isotopes were used to measure cylinder liner wear continuously, enabling separation of running-in and steady-state wear.

A ranking of the material pairings with respect to wear behaviour of the cylinder liner was found. Post-test inspection of the cylinder samples by scanning electron microscopy (SEM) revealed differences in the wear mechanisms for the different material combinations. The results show that the running-in and steady-state wear of the liners can be reduced by choosing the appropriate material for the piston ring.

The use of original engine parts in a closely controlled tribometer environment under realistic loading conditions, in conjunction with continuous and highly sensitive wear measurement methods and a detailed SEM analysis of the wear mechanisms, forms an intermediate step between engine testing and laboratory environment testing.