bluuebunny/crossref_metadata_2025_split huggingface dataset:
Correctness of aspect-oriented business process modeling
Authors: Wang Xu , Zhang Xuan , Li Tong , Liu Junhui , Chen Qingyi 
Published: February 2018

Purpose
Business process models, while primarily intended for process documentation, communication, and improvement, are often also used as input for developing process-oriented software systems (Ouyang et al., 2009). Ensuring correctness, handling complexity, and improving reusability and maintainability of business process models are important for all these goals. The purpose of this paper is to propose an aspect-oriented business process modeling and correctness controlling method based on Petri nets to satisfy these goals.

Design/methodology/approach
The aspect-oriented paradigm provides a proper mechanism to modularization, and thus reduces the complexity of models, and also improves reusability and maintainability. However, weaving aspects into base processes may bring in mistakes or errors. To ensure correctness of modeling, this paper presents a formal approach to modeling aspect-oriented business processes and a method to ensure modeling correctness. Petri net is used as the process modeling language and its analysis techniques are applied to analyze the correctness of modeling. Two types of correctness, specifically, aspect-aspect correctness and base-aspect correctness are analyzed. A real banking process model is studied systematically in the case study to evaluate the approach and the performance assessments are conducted to show the cost and effect of the approach.

Findings
Designing aspect-oriented business process models help organizations reusing the model elements to reduce redundancy of their model repository, improving their maintainability, and supporting them to adapt to the changes of business requirements with flexible modeling. It is important to stress that the correctness of business process modeling is important in ensuring the quality of the models, especially in the safety-critical business domains, such as financial business domain.

Originality/value
In this paper, separation of concerns is used to separate the cross-cutting activities and core activities in accordance with the different functions of these activities, and an approach to modeling aspect-oriented business processes is proposed. First, the cross-cutting activities are encapsulated as aspects, while core business activities are modeled as base processes. Then, according to the correctness requirements of business process models, based on the weaving mechanisms of aspect-oriented approach, weaving correctness is defined. Weaving correctness controlling methods between multi-aspects and between aspects and base processes are designed. Errors or mistakes of aspect-oriented business process modeling are prevented during the procedure of modeling to ensure error-free business process modeling.
What do we know about business process management training? Current status of related research and a way forward
Authors: Thennakoon Dharshani , Bandara Wasana , French Erica , Mathiesen Paul 
Published: February 2018

Purpose
There is wide acknowledgment that training people from all levels of an organization in process management activities and “process thinking” is a major contributor to the success or failure, and sustainability of business process management (BPM). BPM training is provided in almost all BPM initiatives and involves the investment of valuable financial, human, information and other resources. However, little research has focused on this area. As a result, there is a lack of guidance for organizations in conducting value adding BPM training. The purpose of this paper is to consolidate the current published knowledge on BPM training in the form of a descriptive literature review to paint a picture of the existing work, identify gaps and propose a program of work for the future.

Design/methodology/approach
A structured descriptive literature review was conducted to understand the current status of literature on training in the domain of BPM. Of an initial search of 90 publications, 64 publications, published between 1994 and 2015, were filtered and reviewed based on their relevance to answer the research question: What has BPM literature mentioned of training people for BPM? This study proposes a research agenda based on this. A grounded theory coding approach was employed, where NVivo 10 was used as a tool to support the analysis.

Findings
A total of 234 codes (representing emerging themes) were inductively identified from the data. These codes were further analyzed, resulting in eight core themes pertaining to training in the BPM context.

Research limitations/implications
The paper presents a vivid descriptive overview of the current status of research in BPM training identifying gaps in the literature and presents a research agenda which supports a call for action.

Originality/value
The paper is the first known of its kind to compile the status of literature focused on BPM training and recommend a research agenda based on such.
Equity crowdfunding across borders: a conjoint experiment
Authors: Niemand Thomas , Angerer Martin , Thies Ferdinand , Kraus Sascha , Hebenstreit René 
Published: February 2018

Purpose
The purpose of this paper is to identify and disentangle the home bias in equity crowdfunding to better understand irrational decision making of investors.

Design/methodology/approach
A first choice-based conjoint (CBC) experiment with 217 participants was conducted in central Europe in order to single out different factors contributing to an apparent home bias of capital providers.

Findings
The authors find that investors show an avoidance of foreign currency, while payment methods seem to have no considerable influence on the decision making. Furthermore, participants significantly decided against national legislation in favor for EU legislation.

Research limitations/implications
This study predominantly helps to gain deeper insights into influencing factors in crowdfunding markets with a special concern on a cross-border context. For capital-seeking companies, the home bias of potential investor has to be taken into account, when designing a crowdfunding campaign. For legislators, the apparent influence of the legal framework should serve as a wake-up call to consolidate the regulation of crowdfunding in the EU.

Originality/value
This is the first CBC experiment application in a cross-border crowdfunding context. It provides deeper understanding of the importance of geographical proximity between crowdfunding projects and investors and calls for further research to examine how such an effect could be diminished.
Group identity and social closeness
Authors: Moskovich Yaffa , Liberman Ido 
Published: February 2018

Purpose
The purpose of this paper is to study examine the social identity of Ultra-Orthodox students enrolled in institutions of higher learning in Israel, and specifically the ways in which the identity of Ultra-Orthodox students who interact with other groups on campus compares to the identity of self-segregated Ultra-Orthodox students. Traditionally, Ultra-Orthodox students have preferred self-segregated educational institutions. Today, however increasing numbers of Ultra-Orthodox Jews are enrolling in regular academic institutions. Although they study in separate, homogeneous classrooms, they interact with secular students within the framework of the institution.

Design/methodology/approach
A four-part questionnaire dealing with attributions, feelings, personal identities, and social proximity was administered to the Ultra-Orthodox students.

Findings
As hypothesized, the students in self-segregated institutions exhibited a different identity than the students in secular institutions. Contrary to the hypotheses, the self-segregated students had positive feelings toward secular Israeli students and a greater desire for social proximity than the more integrated group. Explanations center on structural identity theory.

Originality/value
In this naturalistic study, the encounters between Ultra-Orthodox students and other students in their academic institution were random, unplanned, and unmonitored, unlike previous studies of intergroup relations in institutions of higher education. These students were not involved in cooperative tasks, which theoretically could help improve the relationships between Ultra-Orthodox and secular students.
Experimental analysis of tribological properties of ultrasonically dispersed garnet nanoparticles in SN500 grade lubricating oil
Authors: R. Maheswaran , J. Sunil 
Published: February 2018

Purpose
The optimal performance of the machinery is based on lubricants that require frequent monitoring and the analysis of characteristics such as chemical content, contamination and viscosity. The application of nanoparticles dispersed lubricant in tribology has received remarkable attention in recent years. This paper aims to investigate the tribological properties of SN500 grade lubricating oil containing garnet nanoparticles.

Design/methodology/approach
In this study, 45-nm-sized garnet particles are ultrasonically dispersed in SN500 grade base lubricant oil. The effects of viscosity and additive concentration on tribological properties are investigated using a four-ball tester.

Findings
Rolling, reinforcing and film-forming behaviour of dispersed nano-sized garnet additives in the rubbing zone were investigated using scanning electron microscopy equipped with energy dispersive spectroscopy. The results indicate that the garnet additives can improve the wear resistance and resistance to relative motion and decrease the friction coefficient of rubbing steel interface by surface polishing and formation of tribo-film containing Si, C and Mn.

Originality/value
Because of the complex two-phase solid–liquid mixture, there are still limited physical understandings of the friction and wear reduction mechanisms. Therefore, the present research was undertaken to interpret the possible phenomena.
Effects of adsorption layers and elastic deformation on thin-film lubrication of circular contacts with non-Newtonian lubricants
Authors: Chu Li-Ming , Lin Jaw-Ren , Chang-Jian Cai-Wan 
Published: February 2018

Purpose
The modified Reynolds equation for non-Newtonian lubricant is derived using the viscous adsorption theory for thin-film elastohydrodynamic lubrication (TFEHL) of circular contacts. The proposed model can reasonably calculate the phenomenon in the thin-film lubrication (TFL) unexplained by the conventional EHL model. The differences between classical EHL and TFEHL with the non-Newtonian lubricants are discussed.

Design/methodology/approach
The power-law lubricating film between the elastic surfaces is modeled in the form of three layers: two adsorption layers on each surface and one middle layer. The modified Reynolds equation with power-law fluid is derived for TFEHL of circular contacts using the viscous adsorption theory. The finite difference method and the Gauss–Seidel iteration method are used to solve the modified Reynolds equation, elasticity deformation, lubricant rheology equations and load balance equations simultaneously.

Findings
The simulation results reveal that the present model can reasonably calculate the pressure distribution, the film thickness, the velocity distribution and the average viscosity in TFL with non-Newtonian lubricants. The thickness and viscosity of the adsorption layer and the flow index significantly influence the lubrication characteristics of the contact conjunction.

Originality/value
The present model can reasonably predict the average viscosity, the turning point and the derivation (log film thickness vs log speed) phenomena in the TFEHL under constant load conditions.
Experiment and simulation of friction coefficient of polyoxymethylene
Authors: Xiong Xiaoshuang , Hua Lin , Wan Xiaojin , Yang Can , Xie Chongyang , He Dong 
Published: February 2018

Purpose
The purposes of this paper include studying the friction coefficient of polyoxymethylene (POM) under a broad range of normal load and sliding velocity; developing a mathematical model of friction coefficient of POM under a broad range of normal loads and sliding velocities; and applying the model to dynamic finite element (FE) analysis of mechanical devices containing POM components.

Design/methodology/approach
Through pin-on-disc experiment, the friction coefficient of POM in different normal loads and sliding velocities is investigated; the average contact pressure is between 5 and 15 Mpa and the sliding velocity is from 0.05 to 0.9 m/s. A friction algorithm is developed and embedded in the FE model to simulate the friction of POM in different normal loads and sliding velocities.

Findings
The friction coefficient of POM against steel declines with the increase of normal loads when the contact pressure is between 5 and 15 Mpa. The friction coefficient of POM against steel increases markedly when the sliding velocity is between 0.05 and 0.15 m/s, it decreases sharply between 0.15-0.45 m/s and then it stabilizes at high sliding velocity between 0.45 and 0.9 m/s. The friction coefficient of POM in different working operations has a significant effect on contact stress and shear stress. The simulation data and experiment data of POM friction force fit very well; therefore, it can be concluded that the friction algorithm and FE model are accurate.

Originality/value
The friction coefficient of POM under a broad range of normal loads and sliding velocities is investigated. The friction coefficient model of POM is established as a function of normal loads and sliding velocities in the dry sliding condition. A friction algorithm is developed and embedded in the FE model of the friction of POM. The mathematical model of the friction coefficient accurately agrees with the experiment data, and simulation data and experiment data of the POM friction force fit very well.
Analysis of influencing factors on transient temperature field of wet clutch friction plate used in marine gearbox
Authors: Lin Tengjiao , Tan Zi-ran , He Ze-yin , Cao Hong , Lv He-sheng 
Published: February 2018

Purpose
This paper aims to introduce the moment of inertia of the driving and driven end of the clutch into the analysis of the transient temperature field of a friction plate and studied the influencing factors on that, especially to a marine gearbox.

Design/methodology/approach
A three-dimensional transient heat transfer analysis model of a wet clutch friction plate used in a marine gearbox is developed, and the transient characteristics of the temperature field during engagement are analyzed with taking account of the influence factors such as the sliding friction coefficient, engaging revolving speed, moment of inertia and applied engagement pressure.

Findings
The paper found out that the hot spot appears on the surface of the friction plate, taking account of the effect of radial slots and spiral groove. To avoid damage to the friction plate as a result of overheating, the appropriate sliding friction coefficient, lower engaging revolving speed and reasonable selection of applied engagement pressure curve can ensure a favorable heating situation of the friction plate. The reasonable structural design for the clutch with a bigger moment of inertia of driving end and smaller moment of inertia of driven end can reduce the engaging time effectively and decrease the peak temperature of the friction plate.

Originality/value
This paper fulfils a method to study the transient temperature field of a wet clutch friction plate, especially used in a marine gearbox.
Effect of the bionic morphologies on bio-tribological properties of surface-modified layers on Ti6Al4V with Ni+/N+ implantation
Authors: Wang Yuan 
Published: February 2018

Purpose
The main purpose of this study is to enhance bio-tribological properties of Ti6Al4V and the surface-modified layers of Ni+/N+-implanted Ti6Al4V alloy, bionic texturing was done on Ti6Al4V surface.

Design/methodology/approach
The phase compositions and nano-hardness of the surface-modified layers of the samples have been analyzed by X-ray diffractometer and Nano Indenter, respectively. This paper has conducted bio-tribological tests under artificial saliva, sodium hyalurate and sodium hyalurate +γ-globulin by micro tribology multifunction tribometer, with ZrO2 ball/modified layer as the friction pair. S-3000N scanning electron microscope has been used to analyze the morphology of the surface-modified layers and scratches of the ones after the bio-tribological tests.

Findings
The results show that the surface-modified layers were mainly composed of Ti2Ni and Ti2N. Moreover, bionic texturing can obviously increase the contents of Ti2Ni and Ti2N that were formed on the surface of Ni+/N+-implanted Ti6Al4V alloy, and enhance the nano-hardness of the surface-modified layers. It could also reduce the friction coefficients of the surface-modified layers, and render the modified layers more wear-resistant.

Originality/value
The surface bio-tribological properties of Ti6Al4V have been enhanced by ion implantation technique and bionic texturing in this paper; this provided a new method for the research of related fields.
Microstructure in the joining zone during the friction welding of the two dissimilar steels
Authors: Ratković Nada , Lazić Vukic , Arsić Dušan , Nikolić Ružica R. , Prokić Cvetković Radica , Popović Olivera 
Published: February 2018

Purpose
The purpose of this paper is to point out the possibilities for friction welding of dissimilar steels which are used in various industries. In addition, friction welding is a welding method that is applied for executing the very responsible joints. This research is focused on friction and tribological processes in the friction plane of the two pieces during the welding.

Design/methodology/approach
The present study research has been conducted based on the experimental testing of cylindrical specimens and results are analyzed.

Findings
The austenite grain size is affected by several factors through the friction process phase and the compacting phase during the welding. The very fine grain is the consequence of the high degree of the plastic deformation of the near-the-contact layers even in the friction phase. The viscous layer, which is formed during the stable friction phase, is the area where the moving of matter occurs according to a very complex mechanism.

Originality/value
The paper contains useful results from the area of conventional friction welding of dissimilar steels and it can be very useful to researchers and engineers who deal with similar problems.
A solution considering elastic-plastic deformation of asperities for contact between rough cylindrical surfaces
Authors: Wen Yuqin , Tang Jin Yuan 
Published: February 2018

Purpose
This paper aims to study the contact between rough cylindrical surfaces considering the elastic-plastic deformation of asperities.

Design/methodology/approach
The elastic deformation of the nominal surface of the curved surface is considered, the contact area is discretized by the calculus thought and then the nominal distance between two surfaces is obtained by iteration after the pressure distribution is assumed. On the basis of the Zhao, Maietta and Chang elastic-plastic model, the contact area and the contact pressure of the rough cylindrical surfaces are calculated by the integral method, and then the solution for the contact between rough cylindrical surfaces is obtained.

Findings
The contact characteristic parameters of smooth surface Hertz contact, elastic contact and elastic-plastic contact between rough cylindrical surfaces are calculated under different plastic indexes and loads, and the calculation results are compared and analyzed. The analysis shows that the solution considering the elastic-plastic deformation of asperities for the contact between rough cylindrical surfaces is scientific and rational.

Originality/value
This paper provides a new effective method for the calculation of the contact between rough cylindrical surfaces.
Islamic occasions and investor sentiment
Authors: Jaziri Marwa , Abdelhedi Mouna 
Published: February 2018

Purpose
The purpose of this paper is to investigate whether the Islamic religious occasions can, through their impact on investor sentiment, affect returns in six Arab financial markets.

Design/methodology/approach
In this paper, the authors test the effect of the occasions of Hajj pilgrimage, Ramadan, Eid-al-Fitr, Mawlid and Ashura during the period of 2001-2016 on Saudi Arabia, Dubai, Kuwait, Egypt, Qatar and Bahrain financial markets. Three measures of investor sentiment are used: trading volume, high minus low and psychological line index.

Findings
Higher effect of investor sentiment on returns is detected after Hajj pilgrimage than that before Hajj pilgrimage in all studied financial markets. The positive emotions during Ramadan contribute significantly to the increase in returns in Arab financial markets. Results indicate that most of studied financial markets exhibit a significant effect of investor sentiment on returns during the first 10 days and the second 10 days of Ramadan. Empirical results indicate that Eid-al-Fitr affects the relation between investor sentiment and returns in Saudi Arabia, Kuwait, Qatar and Dubai financial markets. Relationship between investor sentiment and returns is not is not significantly affected by the Mawlid occasion, except in the Dubai and Kuwait financial markets.

Originality/value
The Islamic occasions of the Hajj pilgrimage, Ramadan and Eid-al-Fitr affect significantly the relation between investor sentiment and returns.
Predicting the growth of high-growth SMEs: evidence from family business firms
Authors: Megaravalli Amith Vikram , Sampagnaro Gabriele 
Published: February 2018

PurposeThe purpose of this paper is to arrive at high-growth firm (HGF) and predict the growth of rapid-growth firms using the set of balance-sheet ratios.Design/methodology/approachThe source of data came from the AIDA database, a commercial database provided by Bureau van Dijk. A total of 45,000 family business small- and medium-scale enterprises of Italy were selected for the study. Liquidity ratio, solvency ratio, firm age, cash flow, and working capital are considered as predictors of the firm growth. Probit regression is used for predicting the growth of the firms.FindingsThe result of the study indicated that the most important financial indicators were the liquidity ratio, solvency ratio, firm age, cash flow, and working capital are most important predictors of firm growth. The ROC of the model is 70.78, which shows that the model is fair.Originality/valueThe present study considers an innovative approach that considers balance sheet issued the year prior to the observation of rapid growth as predictors of firm growth (similar to the credit-scoring models, i.e. theZ-score model, to measure the probability of default).