bluuebunny/crossref_metadata_2025_split huggingface dataset:
Trust based authentication scheme (tbas) for cloud computing environment with Kerberos protocol using distributed controller and prevention attack
Authors: Anbu Malar M.B. Benjula , J. Prabhu 
Published: September 2020

Purpose
This paper aims to discuss the Silver and Golden ticket exploits that usually exists in the existing systems. To overcome these challenges, the data is first encrypted and then the ticket is granted to the validated user. The users are validated using the user privileges. The security levels of the proposed model are compared with the existing models and provide a better performance using the Key Distribution Centre (KDC). The number of authentication and authorization levels present in the existing and proposed model is also evaluated.

Design/methodology/approach
The methodology designed in this paper is discussed in this section. The existing models are designed in such a way that the client ID first asked to send an authorization request to the Authentication Server. The server looks up the user in its database and then sends back a ticket generated by it to the client to obtain services for the Service center. Numerous models have some additional features to these systems where the theme of KDC was introduced. The Key Distribution Centre (KDC), which is a set of nodes in a network where the data could be distributed and stored, such that any kind of attack on a single KDC will not impact other KDC and the data stored in it. The nodes other than the KDC in the network are termed as the slave nodes. The slave nodes communicate with each other within the network depending on the topology of the entire network. In this paper, the authors have used the Kerberos protocol for adding more security functions in the entire network. The system developed consists of a client, server and a set of nodes connected to each other in a ring fashion.

Findings
The proposed model provides security to the information being used by making use of the Kerberos protocol. Additional features and algorithms such as the use of the ticket-granting approach have been added at the protocol to make it more secure than the existing models. The ticket generation is done at the server-side that makes the user have proper authentication to make use of the services available from the server-side. The model is designed in such a way that it could remain operational even during the time of denial of service. As future work, use of machine learning and deep learning could be used to predict the attack on the network well before it is being misused.

Originality/value
The paper discusses the Silver and Golden ticket exploits that usually exists in the existing systems. To overcome these challenges, the data is first encrypted and then the ticket is granted to the validated user. The users are validated using the user privileges. The security levels of the proposed model are compared with the existing models and provide a better performance using the Key Distribution Centre (KDC). The number of authentication and authorization levels present in the existing and proposed model is also evaluated.
Alternative transportation education: implementing an innovative module
Authors: McKenna Kelly , Altringer Levi 
Published: September 2020

Purpose
This study aims to investigate the Colorado state university (CSU) MOVES online, transportation module, which was implemented for the dual purpose of promoting alternative modes of transportation and while providing students with the information and skills necessary to comfortably and safely commute on and around campus without a personal motor vehicle.

Design/methodology/approach
This mixed methods research tests the effect of the CSU MOVES transportation module on students’ familiarity, comfortability and knowledgeability, the researchers investigate within- and across-group changes in student survey responses over time.

Findings
The educational transportation module had an immediate and significant impact on the students’ familiarity, comfortability and knowledgeability regarding alternative and active transportation methods and this effect lasted over the semester. In addition, participating students experienced much larger gains in their knowledgeability of safe active transportation practices.

Research limitations/implications
The CSU MOVES survey data was limited in multiple ways, including self-selection into participation and completion of the transportation module, as well as the small sample size and lack of an authentic control group.

Originality/value
Universities and colleges across the country are becoming critically aware of issues surrounding transportation on and around campus and CSU is one of the first universities to join together with the local community to implement a transportation education module. Transportation initiatives have been motivated by multiple factors such as the supply of and demand for parking on and around campuses, sustainability efforts to reduce carbon emissions associated with university operations and the promotion of student health through active lifestyle practices.
Impacts of farmers' adaptation to drought and salinity intrusion on rice yield in Vietnam's Mekong Delta
Authors: Kim Dang Khoi , Do Thiep Huy , Le Thi Ha Lien , Le Thi Thu Hang , Pham Thinh Duc 
Published: September 2020

PurposeThe Vietnamese Mekong River Delta (VMD) is one of the most affected deltas by climate change in the world. Several studies have investigated factors influencing farmers' climate change adaptation behaviors in the region; however, little is known about the effectiveness of such measures. This paper examines the determinants of adaptation strategies among VMD rice farmers and assesses the impacts of such practices on rice yield.Design/methodology/approachEndogenous switching regressions were employed using a survey data of 300 rice-producing households in An Giang and Tra Vinh provinces in 2016.FindingsThe results show that farmers receiving early disaster warnings are more likely to adopt adaptation measures to climate change. If nonadaptors had chosen to respond, their rice yield would have increased by 0.932 tons/ha/season.Research limitations/implicationsThe data sample is small and collected from two provinces in the VMD only; therefore, the results may be specific for the study sites. However, future research can adopt the proposed method for other regions.Originality/valueThe study estimates the production impacts of farmers' decisions on whether or not to adapt to extreme climate events. The proposed approach allows for capturing both observed and unobserved behaviors.
Face, fate and brand equity: service recovery justice and satisfaction
Authors: Lee Joseph Lok-Man , Siu Noel Yee-Man , Zhang Tracy Jun-Feng 
Published: September 2020

Purpose
Can we always expect that service recovery justice leads to satisfaction? Literature has shown that a number of moderating factors impact the recovery justice-satisfaction link in different cultures. However, there is a dearth of research that has indicated the key cultural variables that play a moderating role. This study aims to attempt to fill the research gap by investigating the moderating role of concern for face, belief in fate and brand equity in the relationship between perceived justice and satisfaction in Chinese culture during service recovery.

Design/methodology/approach
The hypothesized relationships are tested using data from interviews with 600 persons who have recently complained about their telecommunications services. Structural equation modeling is applied in analyzing their responses.

Findings
Concern for face is found to strengthen the relationship between interactional justice perceptions and satisfaction, but to weaken the relationship between distributive justice perceptions and satisfaction. Belief in fate weakens the link between perceptions of interactional justice and satisfaction. Brand equity positively moderates the relationship between perceptions of interactional justice and satisfaction, but it negatively moderates the relationship between perceptions of distributive justice and satisfaction.

Practical implications
The cultural variables, namely, face, fate and brand equity, are found to serve as a moderating role in the relationship between recovery justice dimensions and satisfaction. They are more salient when it is related to social element. Face and brand equity, as interpersonal constructs, aggravate the impact of interactional justice on satisfaction. Fate, as non-social factor, weakens the impact of interactional justice on satisfaction. It is argued that managers should provide staff training in product knowledge and customer service as a preventive measure against damage to the brand. Regular customer satisfaction research and benchmarking exercises should be conducted to understand how customers perceive interactional justice.

Originality/value
This has been the first research to examine the impact of concern for face, belief in fate and brand equity in the relationship between justice perceptions and post-recovery satisfaction during service recovery.
Using numbers in CSR communication and their effects on motive attributions
Authors: Tarabashkina Liudmila , Tarabashkina Olga , Quester Pascale 
Published: September 2020

PurposeThis study aims to investigate how judgments of firms’ underlying motives are affected by corporate social responsibility (CSR) communication which features percentages of profit allocations to CSR causes. It also examines how firm size interacts with CSR spending allocations affecting motive attributions for firms of different sizes.Design/methodology/approachTwo experiments were carried out manipulating CSR spending allocations (smaller vs larger percentage of profit) and firm size (small vs large firm).FindingsA larger percentage of profits allocated to CSR enhanced value-driven motives and inhibited inferences of manipulative intent, which produced lower egoistic-driven motives. Large firms allocating smaller percentages to CSR were judged as less value-driven and were more prone to elicit manipulative intent.Originality/valueTwo routes of motive attributions were identified – a direct route, contingent on CSR spending allocations and firm size; and an indirect route via inferences of manipulative intent, which inhibited favorable motives and prompted unfavorable ones. Both routes resulted from numerical cognition associated with the processing of numbers. Managerial implications include suggestions for firms wishing to overcome negative consumer bias arising from communication featuring CSR spending allocations and firm size.
Leveraging frugal innovation in micro- and small enterprises at the base of the pyramid in Brazil: an analysis through the lens of dynamic capabilities
Authors: Borchardt Miriam , Pereira Giancarlo , Ferreira Alexandre Rodrigues , Soares Marcela , Sousa Josiano , Battaglia Daniel 
Published: September 2020

PurposeThis paper aims to analyse the factors that influence frugal innovation (FI) in micro- and small enterprises (MSEs) at the base of the pyramid (BOP) through the theoretical lens of dynamic capabilities. The input–process–output (I-P-O) framework was used as a tool to support the analysis of FI as a process.Design/methodology/approachA multiple case study was performed with 25 MSEs at the BOP in Brazil, all of which were in the food industry.FindingsThis study indicates that dynamic capabilities are present in enterprises that are migrating to low income and middle-class consumers, which influences their FI practices. To analyse FI in the context of MSEs at the BOP, the I-P-O framework was adapted. Enterprises that have focussed on extremely poor and subsistence markets develop more disruptive innovation, aiming to reduce the final prices they charge consumers. The primary focus of these enterprises is on maintaining ordinary capabilities. Enterprises that have focussed on low income and middle-class customers have implemented incremental innovation, adding value based on colonial tastes and close relationships with their consumers. Such a strategy demands changes in the physical facilities, use of social media and investment in quality control of these enterprises. Considerations for policymakers and institutions are also presented.Originality/valueThe use of a dynamic capabilities lens in such a context is a new approach and provides a relevant basis for further studies. The study has identified different approaches to FI and different sets of barriers and successful practices, both related to the target market segment, that could leverage FI. This study contributes to case studies from Brazil, spreading the research context beyond Asia.
Accounting for biodiverse wildlife corridor plantations
Authors: Horner Claire , Davidson Neil 
Published: September 2020

Purpose
This paper aims to explore the feasibility of implementing the natural inventory model (NIM) developed by Jones (1996, 2003) in biodiverse wildlife corridor plantations, from a non-government organisations’ (NGO) perspective.

Design/methodology/approach
Undertaking the first cycle of an action research approach, the project involves collaboration with Greening Australia Tasmania (GAT). GAT is endeavouring to establish native wildlife corridors throughout the Tasmanian midlands, using science-based biodiverse plantations. The majority of the areas identified by GAT as essential for the establishment of these wildlife corridors are on privately owned land, primarily used for agricultural purposes. This paper explores whether stewardship of the land “sacrificed” by landowners may be demonstrated via the quantification and communication of improvements in biodiversity using the NIM.

Findings
Results suggest that the existing NIM is impractical for use by an NGO with limited resources. However, with some adaptations incorporating science-based measurements, the NIM can be used to account for biodiverse wildlife corridor plantations.

Practical implications
The findings have implications for not-for-profit, corporate and government sectors in terms of how accounting may facilitate the quantification and communication of conservation and restoration efforts.

Social implications
Biodiversity loss is now considered to be a greater threat to the planet than climate change. Efforts to account for biodiversity are consistent with the UN 2030 Sustainable Development Agenda and the Australian Government’s “Biodiversity Conservation Strategy” (2010).

Originality/value
While prior studies have successfully implemented the NIM using secondary data, this is the first known to test the feasibility of the model using primary data in collaboration with an NGO.
Predicting Design Performance Utilizing Automated Topic Discovery
Authors: Ball Zachary , Lewis Kemper 
Published: September 2020

Abstract
Increasingly complex engineering design challenges requires the diversification of knowledge required on design teams. In the context of open innovation, positioning key members within these teams or groups based on their estimated abilities leads to more impactful results since mass collaboration is fundamentally a sociotechnical system. Determining how each individual influences the overall design process requires an understanding of the predicted mapping between their technical competency and performance. This work explores this relationship through the use of predictive models composed of various algorithms. With support of a dataset composed of documents related to the design performance of students working on their capstone design project in combination with textual descriptors representing individual technical aptitudes, correlations are explored as a method to predict overall project development performance. Each technical competency and project is represented as a distribution of topic knowledge to produce the performance metrics, which are referred to as topic competencies, since topic representations increase the ability to decompose and identify human-centric performance measures. Three methods of topic identification and five prediction models are compared based on their prediction accuracy. From this analysis, it is found that representing input variables as topics distributions and the resulting performance as a single indicator while using support vector regression provided the most accurate mapping between ability and performance. With these findings, complex open innovation projects will benefit from increased knowledge of individual ability and how that correlates to their predicted performances.
Assessing Fuel Property Effects on Cavitation and Erosion Propensity Using a Computational Fuel Screening Tool
Authors: Magnotti Gina M. , Som Sibendu 
Published: September 2020

Abstract
To advance compression ignition combustion strategies, researchers have evaluated fuel property effects and their impact on achieving higher efficiencies and lower emissions levels relative to current capabilities. Within the Department of Energy's Co-Optima initiative, there has been a recent focus on understanding the influence of fuel properties on fuel injection performance. To help identify candidate fuels that can meet desired injector performance metrics, a computational fuel screening tool is under development that can link fuel properties with the tendency of a given fuel to cavitate and lead to cavitation-induced erosion. In the initial development of this tool, five liquid fuel properties were selected to represent candidate fuels, namely, density, viscosity, vapor pressure, surface tension, and heat of vaporization. A design of experiments methodology was used to generate a set of pseudofuel cases, which can represent the main effects and interactions among the fuel properties and be related to cavitation erosion predictions. Large eddy simulations were performed using a mixture modeling approach to predict the cavitation and erosion propensity of these pseudofuels in terms of the mean fuel vapor mole fraction and stored impact energy from repeated cloud collapse events. The low-order regression models generated from this study revealed the importance of liquid fuel density on cavitation formation, whereas liquid viscosity was found to have a strong negative correlation with erosion severity. The surrogate models were then used in the fuel screening tool to rank the cavitation and erosion tendency of four candidate single-component fuels: methyl decanoate, iso-octane, ethanol, and n-dodecane. While the fuel screening tool was not able to quantitatively predict the cavitation and erosion response metrics, the tool was able to accurately rank the relative cavitation and erosion propensity of the four fuels. Overall, ethanol and iso-octane were observed to produce the highest levels of cavitation and erosion, respectively.
On the Leakage and Dynamic Force Coefficients of a Novel Stepped Shaft Pocket Damper Seal: Experimental and Numerical Verification
Authors: Yang Jing , San Andrés Luis , Lu Xueliang 
Published: September 2020

Abstract
High-performance turbomachinery favors annular seals with a large damping coefficient to ensure rotor system stability. Pocket damper seals (PDSs), a variation of labyrinth seals with axial blades (ribs) and adding circumferential partition walls (ridges), produce a favorable damping performance. To further enhance the damping characteristic and reduce leakage, a novel stepped shaft PDS is hereby introduced. The invention has a unique arrangement of steps on the rotor surface, each facing an upstream rib in a pocket row. Thus, the step and a blade tip form a tight clearance (c1), while the rotor surface and the downstream blade tip make a larger clearance (c2). The convergence–divergence variation of cross-sectional areas along the flow direction increases the PDS damping coefficient. To validate the performance of the novel design, a stepped shaft PDS (c1/c2 = 0.5) with four axial ribs and eight circumferential pockets is built and tested. A comprehensive investigation, experimental and computational, produces the seal leakage and dynamic force coefficients for the stepped shaft PDS, as well as similar performance characteristics for an identical PDS with a smooth rotor surface (c1/c2 = 1, i.e., a uniform clearance PDS). The stepped shaft PDS operates with air at supply pressure (PS) ranging from 1.1 bar to 3.2 bar. The measured leakage for the stepped shaft PDS is 50% of that for the uniform clearance PDS. Computational fluid dynamics (CFD) and bulk flow model (BFM) predictions of leakage agree well with the test data. For PS = 2.3 bar, the test damping coefficient (C) for the stepped shaft PDS is ~1.5 times greater than the one for the uniform clearance PDS. With an increase in PS to 3.2 bar, the stepped shaft PDS shows a two and one half increase in damping coefficient. In comparison to the test data, a CFD model overestimates C by 29% for operation at PS = 3.2 bar, though capturing the variation trend versus whirl frequency. The BFM largely underpredicts C for the stepped shaft PDS and is abandoned for future work. Both the test data and CFD predictions demonstrate the superior damping performance of the stepped shaft PDS, thus providing a novel alternative seal configuration for turbomachinery usage.
Ignition Probability and Lean Ignition Behavior of a Swirled Premixed Bluff Body Stabilized Annular Combustor
Authors: Ciardiello Roberto , Pathania Rohit S. , Allison Patton M. , de Oliveira Pedro M. , Mastorakos Epaminondas 
Published: September 2020

Abstract
An experimental investigation was performed in a premixed annular combustor equipped with multiple swirl, bluff body burners to assess the ignition probability and to provide insights into the mechanisms of failure and of successful flame propagation. The experiments are done at conditions that are close to the lean blow-off (LBO) limit, and hence, the ignition is difficult and close to the limiting condition when ignition is not possible. Two configurations were employed, with 12 and 18 burners, the mixture velocity was varied between 10 and 30 m/s, and the equivalence ratio (ϕ) between 0.58 and 0.68. Ignition was initiated by a sequence of sparks (2 mm gap, 10 sparks of 10 ms each) and “ignition” is defined as successful ignition of the whole annular combustor. The mechanism of success and failure of the ignition process and the flame propagation patterns were investigated via high-speed imaging (10 kHz) of OH* chemiluminescence. The lean ignition limits were evaluated and compared to the LBO limits, finding the 12-burner configuration is more stable than the 18-burner. It was found that failure is linked to the trapping of the initial flame kernel inside the inner recirculation zone (IRZ) of a single burner adjacent to the spark, followed by localized quenching on the bluff body probably due to heat losses. In contrast, for a successful ignition, it was necessary for the flame kernel to propagate to the adjacent burner or for a flame pocket to be convected downstream in the chamber to grow and start propagating upward. Finally, the ignition probability (Pign) was obtained for different spark locations. It was found that sparking inside the recirculation zone resulted in Pign∼0 for most conditions, while Pign increased moving the spark away from the bluff body or placing it between two burners and peaked to Pign∼1 when the spark was located downstream in the combustion chamber, where the velocities are lower and the turbulence less intense. The results provide information on the most favorable conditions for achieving ignition in a complex multiburner geometry and could help the design and optimization of realistic gas turbine combustors.