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The purpose of this study is to investigate whether a U-shaped relationship exists between the length of time a donor has been a regular member in a nonprofit organization and the amount donated over time. In addition, this research analyzes whether this relationship is moderated by donation frequency.

Using a database of 6,137 members from a collaborating nonprofit organization, a longitudinal study is conducted over an eight-year period (2013–2020). A set of ordinary least square (OLS) regression analyses are carried out to empirically test the proposed hypotheses.

This study finds a nonlinear, U-shaped relationship between donation amount and relationship length. This effect can be explained through the dynamic evolution of two dimensions of commitment: affective (decreasing over time) and normative (increasing over time). The results also reveal that these effects, however, become flatter for members who engage in more frequent donations.

The results provide novel insights revealing the nonlinear nature of the relationship between the length of time a donor has been a member of a nonprofit organization and the amount donated, and underscores the moderating role of donation frequency, which makes the U-shaped relationship flatter, thus increasing the amounts donated. Despite their relevance in the service ecosystem, nonprofits have been under-represented in prior work. This study offers important practical insights into the effective management of the regular donor portfolio.

The extant new service development (NSD) literature tends to assume that the key practices for NSD identified in one context apply for all services, and has failed to sufficiently consider differences in NSD between service types. The purpose of this paper is to explore the nature of NSD across different service types.

An extensive, cross-sectoral survey was conducted in seven countries. Data from 1,333 NSD projects were analyzed to empirically derive a service typology and examine if and how different types of services vary in terms of NSD resources, practices, methods, and results.

Based on six service characteristics, the study identifies four service types: routine-intensive, technology-intensive, contact-intensive, and knowledge-intensive services. The study also identifies specific NSD resources, practices, methods, and results that are prevalent across the service typology. The evidence indicates that the use of advanced practices and methods differs dramatically between service types.

The paper enables practitioners to expand their current understanding on NSD by providing insights into the variability of NSD across service types. The results suggest that either service-type-specific models or a configurable model for NSD should be developed.

This study provides one of the first empirically derived service typologies for NSD. The study demonstrates that NSD resources, practices, methods, and results differ across service types, thereby challenging the “one size fits all” assumption evident in current NSD research.

The purpose of this paper is to examine the risk adjusted performance of unit investment trusts (UITs). These UITs are a unique investment vehicle in that the trusts invest in a fixed portfolio of stocks for a predetermined period of time and hold limited cash positions.

Using a sample of 1,487 UITs from January 2004 to December 2013, the authors estimate the risk adjusted performance of the UITs. The authors use daily return data and four different returns based models to measure the alphas of the UITs.

The authors find that before fees and expenses the UITs generate significant negative alphas. The authors also find that observable trust characteristics are unable to explain the poor risk adjusted performance of the trusts.

Despite $85bn being invested in these unique buy and hold vehicles, the academic literature has not examined the risk adjusted performance of the trusts. The poor performance of these trusts indicates that restricting flexibility and maintaining full investment for a fixed period of time may not be beneficial to investors.

The purpose of this paper is to examine the implementation of a set of commitment-based HR practices and explores their impact on three categories of organizational outcomes.

Cross-sectional study based on a survey. Multiple regression analysis was applied to test the hypotheses proposed.

The results show that commitment-based HR practices make up a system that presents internal consistency and favours HR performance and operational outcomes, as well as contributing to financial outcomes through the mediator role of innovation.

The HR practices were measured based on the perception of only one informant per company, normally the manager.

This study makes it possible to draw relevant conclusions in a sector (hotel industry) that lacks references about the role of a system of commitment-based HR practices in achieving organizational outcomes. The use of a sample of homogeneous firms provides managers with valuable and specific information about the sector that can foster the adoption of commitment-based HR practices by hotel firms.

This paper contributes to better know how HR practices based on commitment foster employees’ willingness to engage in the strategic objectives established by the organization from the systems perspective. Furthermore the research contributes to the understanding of these practices in an important economic industry, such as it is the hospitality sector, in which research had traditionally placed little emphasis on this kind of analysis.

Fillet welding is one of the most widespread types of welding in the industry, which is still carried out manually or automated by contact. This paper aims to describe an online programming system for noncontact fillet welding robots with “U”- and “L”-shaped structures, which responds to the needs of the Fourth Industrial Revolution.

In this paper, the authors propose an online robot programming methodology that eliminates unnecessary steps traditionally performed in robotic welding, so that the operator only performs three steps to complete the welding task. First, choose the piece to weld. Then, enter the welding parameters. Finally, it sends the automatically generated program to the robot.

The system finally managed to perform the fillet welding task with the proposed method in a more efficient preparation time than the compared methods. For this, a reduced number of components was used compared to other systems: a structured light 3 D camera, two computers and a concentrator, in addition to the six-axis industrial robotic arm. The operating complexity of the system has been reduced as much as possible.

To the best of the authors’ knowledge, there is no scientific or commercial evidence of an online robot programming system capable of performing a fillet welding process, simplifying the process so that it is completely transparent for the operator and framed in the Industry 4.0 paradigm. Its commercial potential lies mainly in its simple and low-cost implementation in a flexible system capable of adapting to any industrial fillet welding job and to any support that can accommodate it.

In this study, a robotic robust system is achieved, aligned to Industry 4.0, with a friendly, intuitive and simple interface for an operator who does not need to have knowledge of industrial robotics, allowing him to perform a fillet welding saving time and increasing productivity.

The deployment of a field hospital can play an important role in the response to an emergency. This paper is concerned with the management of emergency staff to a field hospital from a roster of volunteers with different characteristics. This paper aims to propose a mathematical optimisation model that selects the necessary profiles of the roster according to several criteria and provides travel planning taking into account the total cost of the operation.

This study uses a multi-criteria optimisation model to take into account the preferences of the three main stakeholders involved in the deployment of the field hospital: the cooperation organisation, the staff and the end users. The model considers the possibility of using commercial or chartered flights, allows staff to indicate their preferred availability, considers the grading of volunteers according to their skills and training and provides a final flight schedule for all the medical personnel needed to operate the field hospital. Compromise programming is used to provide a Pareto optimal solution, which is compared with solutions provided by Goal programming.

The model has been validated using data from the operation in a case study of the deployment of the Spanish START hospital in Turkey 2023, demonstrating the practical utility of the model in similar operations.

The study innovates by considering a multi-criteria model that takes into account the main actors involved in the response – cooperation organisation, staff and end users – in an integrated way and proposes new measures of efficiency.

Impinging jets have been widely studied, and the addition of swirl has been found to be beneficial to heat transfer. As there is no literature on Reynolds-averaged Navier Stokes equations (RANS) nor experimental data of swirling jet flows generated by a rotating pipe, the purpose of this study is to fill such gap by providing results on the performance of this type of design.

As the flow has a different behaviour at different parts of the design, the same turbulent model cannot be used for the full domain. To overcome this complexity, the simulation is split into two coupled stages. This is an alternative to use the costly Reynold stress model (RSM) for the rotating pipe simulation and the SST k-ω model for the impingement.

The addition of swirl by means of a rotating pipe with a swirl intensity ranging from 0 up to 0.5 affects the velocity profiles, but has no remarkable effect on the spreading angle. The heat transfer is increased with respect to a non-swirling flow only at short nozzle-to-plate distances H/D < 6, where H is the distance and D is the diameter of the pipe. For the impinging zone, the highest average heat transfer is achieved at H/D = 5 with swirl intensity S = 0.5. This is the highest swirl studied in this work.

High-fidelity simulations or experimental analysis may provide reliable data for higher swirl intensities, which are not covered in this work.

This two-step approach and the data provided is of interest to other related investigations (e.g. using arrays of jets or other surfaces than flat plates).

This paper is the first of its kind RANS simulation of the heat transfer from a flat plate to a swirling impinging jet flow issuing from a rotating pipe. An extensive study of these computational fluid dynamics (CFD) simulations has been carried out with the emphasis of splitting the large domain into two parts to facilitate the use of different turbulent models and periodic boundary conditions for the flow confined in the pipe.

The purpose of this paper is to assess the relationship between information technology (IT) use and management innovation through the mediator role of knowledge-based resources.

The paper presents empirical evidence from a survey of 109 companies that run hotel establishments in the Spanish territory. A model of relationships is proposed and tested through a system of structural equations.

The use of IT favors the development of organizational knowledge and the ability to integrate this knowledge. Moreover, a positive and direct relationship was found between IT use and management innovation, and indirectly through organizational knowledge and knowledge integration capability.

The designed questionnaire did not include any questions related to specific IT tools that could contribute to better knowledge management practices in hospitality organizations, but rather generic questions about IT use. The large number of IT tools that can potentially support knowledge management practices in hospitality companies would make the questionnaire unwieldy for its target respondents.

This paper sheds light on a topic that has hardly been studied in the services literature. Specifically, it addresses the way organizations can facilitate management innovation through the use of IT, while considering the mediator role of knowledge-based resources.

El objetivo de este estudio es evaluar la relación entre el uso de las tecnologías de la información (TIC) y la innovación organizativa a través del papel mediador de los recursos basados en el conocimiento.

El trabajo presenta evidencia empírica a partir de una encuesta realizada a 109 empresas que gestionan establecimientos hoteleros en todo el territorio español. Un modelo de relaciones se propone y testa mediante un sistema de ecuaciones estructurales.

El uso de TIC favorece el desarrollo del conocimiento organizacional y la capacidad para integrar dicho conocimiento. Además, se encontró una relación directa y positiva entre el uso de TIC y la innovación organizativa, así como una relación mediada por el conocimiento organizacional y la capacidad de integración del conocimiento.

El cuestionario diseñado no incluyó preguntas relacionadas con herramientas de TIC específicas que pudieran contribuir a mejores prácticas de gestión del conocimiento en empresas de alojamiento turístico, sino preguntas genéricas sobre el uso de TIC. El gran número de herramientas de TIC que potencialmente pueden apoyar las prácticas de gestión del conocimiento en las empresas de alojamiento, complicaría la cumplimentación del cuestionario por parte de los encuestados.

Este estudio amplía el conocimiento sobre un tema escasamente estudiado en la literatura de servicios. En concreto, se aborda la forma en que las organizaciones pueden facilitar la innovación organizativa a través del uso de TIC considerando, simultáneamente, el papel mediador de los recursos basados en el conocimiento.

Between 1988 and 1994 ten European countries introduced or modified their regulations on insider trading. We evaluate in this article the impact of such regulatory changes on the risk, return, and some other characteristics of these ten markets. After extensive testing, we find that the evidence suggests that these regulations have had little (if any) impact on the market characteristics we examine, and briefly speculate about the reasons that justify our findings.

This paper aims to identify and analyze factors that determine firms’ commitment to co-create new services with business customers.

A quantitative study based on a scenario method, involving an online survey of French service companies, reveals the determinants of commitment to service co-creation.

Customer benefits and organizational sacrifices, as well as firm-related factors (specialization, partners’ involvement and innovativeness) correlate with firms’ commitment to co-create new services. The proposed, empirically grounded model details factors that determine firms’ commitment to co-create new services with business customers, including innovative culture as a key determinant.

The identified factors that affect firms’ commitment to co-create services can guide managers’ efforts to improve customer relationships and thus their service innovation processes.

This study identifies and analyzes characteristics of committed firms, as well as the benefits and sacrifices they face in co-creating new services, in a novel way. Thus, it helps define the fit between a service offering and business customers’ participation in new service development contexts.