bluuebunny/crossref_metadata_2025_split huggingface dataset:
Impact of vertical line extensions on brand attitudes and new extensions
Authors: Palmeira Mauricio , Lei Jing , Valenzuela Ana 
Published: February 2019

PurposeCompanies often extend brands to higher or lower quality tiers to access different market segments. However, the impact of such extensions on the brand and its subsequent offerings is not yet conclusive. While some studies found an “averaging” pattern (all models contribute equally to the overall perception of the brand: a symmetric effect), others found a “best-of-brand” pattern (the positive impact of an upstream extension is much greater than the negative impact of a downstream extension: an asymmetric effect). This paper aims to reconcile these seemingly conflicting findings by assessing the conditions under which each pattern is likely to emerge.Design/methodology/approachThree experimental studies are presented to test the conditions under which a symmetric or asymmetric pattern of brand evaluation would merge. Study 1 examined the impact of judgment focus (quality vs expertise) on the pattern of brand evaluations. Study 2 tested the impact of having a comparative set on the assessment of specific brand dimensions. Study 3 examined the impact of the informativeness of price positioning on product quality expectations.FindingsBrand evaluations and attitudes are determined by the presence of a comparative brand and judgment focus. When brands are evaluated without a comparison, a symmetric pattern emerges, as a low-tier extension hurts a brand as much as a high-tier extension helps it. In contrast, when brands are evaluated with a comparison, focusing the assessment on quality leads to a symmetric pattern, while focusing it on expertise leads to an asymmetric one.Research limitations/implicationsThe present research specifies conditions under which a low-tier model may hurt brand perceptions. We used hypothetical brands to avoid the impact of preexisting attitudes. While we expect our results to generalize to real brands, this may be considered a limitation of the present research.Practical implicationsThe current research delineates the circumstances under which vertical line extensions have positive, neutral or negative impact on brand perceptions and future product expectations. We introduce the presence of a comparison set as a key variable and show how it interacts with assessment focus to affect brand evaluations. When thinking about the impact of extensions on brand perceptions, marketers need to consider which assessment focus is likely to be triggered by environmental cues and whether comparisons are salient.Originality/valueBrand extension is an important area of investigation as evidenced by the vast literature dedicated to the subject. The present paper advances knowledge in this area by identifying key factors affecting the impact of vertical extensions on brand perceptions.
Engaging customers through online and offline referral reward programs
Authors: Wirtz Jochen , Orsingher Chiara , Cho Hichang 
Published: February 2019

Purpose
This paper aims to examine the psychological consequences of a customer engagement initiative through referral reward programs (RRPs) in online versus offline environments.

Design/methodology/approach
The authors conducted a qualitative study followed by a scenario-based experimental study.

Findings
The authors show that recommenders’ concern about how they are viewed by recommendation recipients (i.e. their metaperception) mediates the effects of incentives on referral likelihood in both offline and online environments. However, metaperception has a stronger effect offline where recommenders show higher impression management concerns compared to online. Furthermore, tie-strength and communication environment moderate the effect of incentives on metaperception. When referrals are made to weak-ties, incentives decrease metaperception favorability offline more than online. For strong-ties, this effect is lower, and it is similar in offline and online environments.

Research limitations/implications
The study focused on an online versus offline dyadic communication and did not consider the differences among social media. Furthermore, the authors did not consider how other forms of positive metaperception, like being seen as helpful or knowledgeable, could be increased in an online incentivized referral context. It is possible that a recommender thinks others see him as more helpful or knowledgeable online because a lot more useful information and other resources could be offered here compared to offline communications.

Practical implications
The authors recommend managers to design both online and offline RRPs that minimize metaperception concerns; target strong ties in any communication environment as metaperception concerns are low; and target weak ties online where metaperception concerns are muted.

Originality/value
This work is the first to examine how recommenders’ psychological responses differ offline and online.
Stabilizing periodic orbits of Chua’s system using adaptive fuzzy sliding mode controller
Authors: Medhaffar Hanène , Feki Moez , Derbel Nabil 
Published: February 2019

Purpose
The purpose of this paper is to investigate the stabilization of unstable periodic orbits of Chua’s system using adaptive fuzzy sliding mode controllers with moving surface.

Design/methodology/approach
For this aim, the sliding mode controller and fuzzy systems are combined to achieve the stabilization. Then, the authors propose a moving sliding surface to improve robustness against uncertainties during the reaching phase, parameter variations and extraneous disturbances.

Findings
Afterward, the authors design a sliding observer to estimate the unmeasurable states which are used in the previously designed controller.

Originality/value
Numerical results are provided to show the effectiveness and robustness of the proposed method.
The effects of supervisor support and self-efficacy on call center employees’ work engagement and quitting intentions
Authors: Hidayah Ibrahim Siti Nur , Suan Choo Ling , Karatepe Osman M. 
Published: February 2019

Purpose
The purpose of this paper is to investigate work engagement as a mediator of the impacts of supervisor support and self-efficacy on quitting intentions, and examine self-efficacy as a mediator between supervisor support and work engagement.

Design/methodology/approach
Data were collected from 177 call center employees in Malaysia. The aforesaid linkages were tested through structural equation modeling.

Findings
As hypothesized, self-efficacy mediates the relationship between supervisor support and work engagement, while work engagement mediates the impacts of supervisor support and self-efficacy on quitting intentions.

Originality/value
Though work engagement is on the decline and employee turnover is on the rise, no attention has been given to investigating the impacts of supervisor support and self-efficacy simultaneously on call center employees’ work engagement and quitting intentions so far. Therefore, the study aims to fill in this void.
Behavioral study and availability optimization of a multi-state repairable system with hot redundancy
Authors: Kumar Amit , Kumar Vinod , Modgil Vikas 
Published: February 2019

PurposeThe purpose of this paper is to identify the criticality of various sub-systems through the behavioral study of a multi-state repairable system with hot redundancy. The availability of the system is optimized to evaluate the optimum combinations of failure and repair rate parameters for various sub-systems.Design/methodology/approachThe behavioral study of the system is conducted through the stochastic model under probabilistic approach, i.e., Markov process. The first-order differential equations associated with the stochastic model are derived with the use of mnemonic rule assuming that the failure and repair rate parameters of all the sub-systems are constant and exponentially distributed. These differential equations are further solved recursively using the normalizing condition to obtain the long-run availability of the system. A particle swarm optimization (PSO) algorithm for evaluating the optimum availability of the system and supporting computational results are presented.FindingsThe maintenance priorities for various sub-systems can easily be set up, as it is clearly identified in the behavioral analysis that the sub-system (A) is the most critical component which highly influences the system availability as compared to other sub-systems. The PSO technique modifies input failure and repair rate parameters for each sub-system and evaluates the optimum availability of the system.Originality/valueA bottom case manufacturing system is under the evaluation, which is the main component of front shock absorber in two-wheelers. The input failure and repair rate parameters were parameterized from the information provided by the plant personnel. The finding of the paper provides the various availability measures and shows the grate congruence with the system behavior.
Trajectory planning method based on transitional segment optimization of spray painting robot on complex-free surface
Authors: Guan Liwen , Chen Lu 
Published: February 2019

Purpose
This paper aims to present a new trajectory optimization approach targeting spray painting applications that satisfies the paint thickness requirements of complex-free surfaces.

Design/methodology/approach
In this paper, a new trajectory generation approach is developed to optimize the transitional segments at the junction of adjacent patches for straight line, convex arc and concave arc combinations based on different angles between normal vectors of patches. In addition, the paint parameters including the paint gun velocity, spray height and the distance between adjacent trajectories have been determined in the generation approach. Then a thickness distribution model is established to simulate the effectiveness of trajectory planning.

Findings
The developed approach was applied to a complex-free surface of various curvatures, and the analysis results of the trajectory optimization show that adopting different transitional segment according to the angle between normal vectors can obtain the optimal trajectory. Based on the simulation and experimental validation results, the proposed approach is effective at improving paint thickness uniformity, and the obtained results are consistent with the simulation results, meaning that the simulation model can be used to predict the actual paint performance.

Originality/value
This paper discusses a new trajectory generation approach to decrease the thickness error values to satisfy spray paint requirements. According to the successfully performed simulation and experimental results, the approach is useful and practical in overcoming the challenge of improving the paint thickness quality on complex-free surface.
Comparison of students in an undergraduate university degree offered both in presence and online
Authors: Scarabottolo Nello 
Published: February 2019

PurposeThis paper aims to compare the students enrolled to a three-year undergraduate, bachelor degree on Security of Computer Systems and Networks, offered in traditional, classroom fashion as well as online at the University of Milan (Italy). Its main purposes are to estimate the main characteristics of the two different student populations addressed (i.e. online vs classroom students) to understand if an online version of an already existing traditional university degree allows to extend the enrollment of students; and to evaluate the effectiveness of the e-learning approach adopted, comparing performance of the two student populations. The study aims to supply a significant case study, based on a real experience more than 10 years long.Design/methodology/approachThe paper is based on the statistical interpretation of a huge amount of data, collected during the overall life of Sicurezza dei Sistemi e delle Reti Informatiche (SSRI) online, regarding student age, income, grades obtained in exams and after final dissertation and graduation time.FindingsThe paper allows to conclude that the online student population has very limited overlap with the classroom one, which means that the online version of an already existing degree can definitely enlarge the student enrollment and reach older students; and a carefully designed e-learning environment allows committed online students to obtain results comparable when not better than the ones of classroom students.Research limitations/implicationsThe study refers to a single, specific degree in computer science and technology; thus, it may lack generalizability. Similar experiences in other areas could be useful.Originality/valueThis paper fulfills an identified need to study how e-learning can be successfully applied to already existing traditional university degrees.
Multiple choice questions: answering correctly and knowing the answer
Authors: McKenna Peter 
Published: February 2019

PurposeThis paper aims to examine whether multiple choice questions (MCQs) can be answered correctly without knowing the answer and whether constructed response questions (CRQs) offer more reliable assessment.Design/methodology/approachThe paper presents a critical review of existing research on MCQs, then reports on an experimental study where two objective tests (using MCQs and CRQs) were set for an introductory undergraduate course. To maximise completion, tests were kept short; consequently, differences between individuals’ scores across both tests are examined rather than overall averages and pass rates.FindingsMost students who excelled in the MCQ test did not do so in the CRQ test. Students could do well without necessarily understanding the principles being tested.Research limitations/implicationsConclusions are limited by the small number of questions in each test and by delivery of the tests at different times. This meant that statistical average data would be too coarse to use, and that some students took one test but not the other. Conclusions concerning CRQs are limited to disciplines where numerical answers or short and constrained text answers are appropriate.Practical implicationsMCQs, while useful in formative assessment, are best avoided for summative assessments. Where appropriate, CRQs should be used instead.Social implicationsMCQs are commonplace as summative assessments in education and training. Increasing the use of CRQs in place of MCQs should increase the reliability of tests, including those administered in safety-critical areas.Originality/valueWhile others have recommended that MCQs should not be used (Hinchliffe 2014, Srivastavaet al., 2004) because they are vulnerable to guessing, this paper presents an experimental study designed to demonstrate whether this hypothesis is correct.
Return and volatility spillover across equity markets between China and Southeast Asian countries
Authors: Hung Ngo Thai 
Published: February 2019

Purpose
This paper aims to study the daily returns and volatility spillover effects in common stock prices between China and four countries in Southeast Asia (Vietnam, Thailand, Singapore and Malaysia).

Design/methodology/approach
The analysis uses a vector autoregression with a bivariate GARCH-BEKK model to capture return linkage and volatility transmission spanning the period including the pre- and post-2008 Global Financial Crisis.

Findings
The main empirical result is that the volatility of the Chinese market has had a significant impact on the other markets in the data sample. For the stock return, linkage between China and other markets seems to be remarkable during and after the Global Financial Crisis. Notably, the findings also indicate that the stock markets are more substantially integrated into the crisis.

Practical implications
The results have considerable implications for portfolio managers and institutional investors in the evaluation of investment and asset allocation decisions. The market participants should pay more attention to assess the worth of across linkages among the markets and their volatility transmissions. Additionally, international portfolio managers and hedgers may be better able to understand how the volatility linkage between stock markets interrelated overtime; this situation might provide them benefit in forecasting the behavior of this market by capturing the other market information.

Originality/value
This paper would complement the emerging body of existing literature by examining how China stock market impacts on their neighboring countries including Vietnam, Thailand, Singapore and Malaysia. Furthermore, this is the first investigation capturing return linkage and volatility spill over between China market and the four Southeast Asian markets by using bivariate VAR-GARCH-BEKK model. The authors believe that the results of this research’s empirical analysis would amplify the systematic understanding of spillover activities between China stock market and other stock markets.
Social climate and aggression in IDD services
Authors: Robinson Joanne Emma , Craig Leam 
Published: February 2019

PurposeThe purpose of this paper is to adapt a social climate measure for use within a forensic intellectual and developmental disabilities (IDD) service and examine perceptions of social climate and the links with patient aggression across three levels of security.Design/methodology/approachFour staff participated in a focus group to discuss how the Essen Climate Evaluation Schema (EssenCES) could be adapted for IDD patients. Subsequently, a pilot study with three patients highlighted some difficulties in administering the adapted measure. Alterations in the administration of the measure were implemented with a further ten patients residing across three levels of security. The EssenCES was adapted to include more visual prompts to assist in the patients’ completion of the measure. The frequency of aggressive incidents in each of the three settings was also collated.FindingsStatistical analysis revealed a non-significant trend where positive social climate ratings increased as the security level decreased. There was a significant difference in the frequency of aggressive incidents across the three levels of security; however, there were no significant relationships found between the questionnaire ratings and the frequency of incidents.Research limitations/implicationsThe results lacked statistical power due to the low number of participants. Further studies with adapted social climate measures need to be conducted to assess the implications of social climate on individuals with IDD in secure forensic services.Originality/valueThe study adapted and piloted a social climate measure for individuals in a forensic IDD service.
Looking good and doing good: family to work spillover through impression management
Authors: Carlson Dawn S. , Kacmar K. Michele , Thompson Merideth J. , Andrews Martha C. 
Published: February 2019

PurposeThe purpose of this paper is to examine the role of four impression management (IM) tactics as mediators to help job incumbents manage the impressions others have regarding the spillover of the incumbent’s family domain onto the work domain.Design/methodology/approachThe authors examined the data from 296 matched job incumbents and coworkers. The authors tested a structural equation model and alternative models to find the best fit and subsequently tested both direct and indirect effects.FindingsThe authors found that family-to-work conflict related to job-focused and supervisor-focused IM behaviors, and family-to-work enrichment related to self-focused, coworker-focused and supervisor-focused IM behaviors. Supervisor-focused IM served as a mediator to the job incumbent’s attitude (job satisfaction) while job-focused, self-focused and coworker-focused IM served as mediators to the job incumbent’s behavior (job performance).Practical implicationsThe research is important in that just as employees do not “leave work at the office,” they also do not “leave family at home.” Instead, experiences in the two domains affect one another in ways that are beneficial and harmful. Understanding the role that IM plays in this process adds insight into the spillover of family onto work.Originality/valueThe authors extend both the work-family and IM literatures by looking at potential family domain antecedents to engaging in IM behaviors and their impact on work life.
Dynamic prioritization of equipment and critical failure modes
Authors: Mahmoudi Mohamadreza , Amoozad Mahdiraji Hannan , Jafarnejad Ahmad , Safari Hossein 
Published: February 2019

PurposeThe purpose of this paper is to identify critical equipment by dynamically ranking them in interval-valued intuitionistic fuzzy (IVIF) circumstances. Accordingly, the main drawbacks of the conventional failure mode and effects analysis (FMEA) are eliminated. To this end, the authors have presented the interval-valued intuitionistic fuzzy condition-based dynamic weighing method (IVIF-CBDW).Design/methodology/approachTo realize the objective, the authors used the IVIF power weight Heronian aggregation operator to integrate the data extracted from the experts’ opinions. Moreover, the multi-attributive border approximation area comparison (MABAC) method is applied to rank the choices and the IVIF-CBDW method to create dynamic weights appropriate to the conditions of each equipment/failure mode. The authors proposed a robust FMEA model where the main drawbacks of the conventional risk prioritization number were eliminated.FindingsTo prove its applicability, this model was used in a case study to rank the equipment of a HL5000 crane barge. Finally, the results are compared with the traditional FMEA methods. It is indicated that the proposed model is much more flexible and provides more rational results.Originality/valueIn this paper, the authors have improved and used the IVIF power weight Heronian aggregation operator to integrate information. Furthermore, to dynamically weigh each equipment (failure mode), they presented the IVIF-CBDW method to determine the weight of each equipment (failure mode) based on its equipment conditions in the O, S and D criteria and provide the basis for the calculation. IVIF-CBDW method is presented in this study for the first time. Moreover, the MABAC method has been performed, to rank the equipment and failure mode. To analyze the information, the authors encoded the model presented in the robust MATLAB software and used it in a real sample of the HL5000 crane barge. Finally, to evaluate the reliability of the model presented in the risk ranking and its rationality, this model was compared with the conventional FMEA, fuzzy TOPSIS method, the method of Liu and the modified method of Liu.