bluuebunny/crossref_metadata_2025_split huggingface dataset:
A closed-form contact model for gas face seals during the opened operation
Authors: Hu Songtao , Brunetiere Noel , Huang Weifeng , Shi Xi , Peng Zhike , Liu Xiangfeng , Wang Yuming 
Published: August 2018

Purpose
Face contact has a strong impact on the service life of non-contacting gas face seals; the current research which mainly focuses on the face contact had appeared during the startup or shutdown operation. This paper aims to present a closed-form contact model of a gas face seal during the opened operation.

Design/methodology/approach
Referring to the axial rub-impact model of rotor dynamics, a closed-form contact model is developed under a nonparallel plane contact condition that corresponds to the local face contact of sealing rings arising from some disturbances during the opened operation. The closed-form contact model and a direct numerical contact model are performed on Gaussian surfaces to compare the contact behavior.

Findings
The closed-form contact model is in a good agreement with the direct numerical contact model. However, the closed-form contact model cannot involve the influence of grooves on the sealing ends. The error is eliminated in some other types of gas face seals such as coned gas face seals. Besides non-contacting face seals, the closed-form model can be applied to the axial rub impact of rotor dynamics.

Originality value
A closed-form contact model of a gas face seal is established during the opened operation. The closed-form contact model is validated by a direct numerical contact model. The closed-form contact model also suits for axial rub-impact of rotor dynamics.
Social media privacy concerns: trusting beliefs and risk beliefs
Authors: Koohang Alex , Paliszkiewicz Joanna , Goluchowski Jerzy 
Published: August 2018

Purpose
The purpose of this paper is to build a research model that examines social media privacy concerns (SMPC) in relation to users’ trusting beliefs and risk beliefs.

Design/methodology/approach
An instrument with eight constructs (SMPC: collection, SMPC: secondary usage, SMPC: errors, SMPC: improper access, SMPC: control, SMPC: awareness, trusting beliefs and risk beliefs) was developed and administered to subjects from a mid-sized university in the USA. Collected data were analyzed using partial least square structural equation modeling.

Findings
The results showed that three of the six SMPC (i.e. secondary usage, improper access and awareness) were negatively and significantly associated with users’ trusting beliefs. In addition, three of the six SMPC (i.e. collection, errors and improper access) were positively and significantly associated with users’ risk beliefs.

Practical implications
Practical implications were aimed at the social media sites to design simple and straightforward privacy policy statements that are easy to understand; to safeguard users’ online privacy behaviors; and to develop mechanisms to protect personal information.

Originality/value
This study enhances the literature by contributing to a generalized knowledge of SMPC of users as they relate to their trusting beliefs and risk beliefs.
Deal proneness and national culture: evidence from the USA, Thailand and Kenya
Authors: Sharma Dheeraj , Singh Satyendra 
Published: August 2018

Purpose
Culture is one of the critical variables in explaining consumer behavior and consumer response to external stimuli. The purpose of this paper is to delineate the relationship between deal proneness and culture. Specifically, this paper examines the relationship between Hofstede’s cultural dimensions, namely, power distance, individualism/collectivism, masculinity/femininity and uncertainty avoidance, and deal proneness. Additionally, the role of store image as a moderator between culture and deal proneness is explored. Finally, the paper offers prescriptive and descriptive insights for marketers to consider cultural perspectives when promoting products internationally. A clear understanding of cultural influences on deal proneness will allow marketers to target specific customer segments more accurately.

Design/methodology/approach
The authors collected data from consumers in shopping malls in USA, Thailand, and Kenya. The authors analyzed the data using structural equation modeling.

Findings
The authors found that societies with a high femininity index are more likely to respond to deals than masculine societies. An inverse relationship between the Power Distance Index (PDI) and deal proneness may exist, suggesting that societies with a high PDI may be less deal prone. The authors found that individualism index is positively related to deal proneness, and thus societies with a low individualism index should be more deal prone. Finally, individuals in high uncertainty avoidance countries are expected to exhibit low deal prone tendencies.

Research limitations/implications
The study utilized a sample from cities. Consequently, future studies may attempt to validate the relationship posited in this study by utilizing non-urban data. Additionally, the authors look at stores in a mall. Thus, there is a possibility of interaction between mall image and store image. It may be useful to validate the findings of this study by using data from stand alone stores and also examine the interaction effect of mall image and store image on the deal proneness in a given culture.

Practical implications
This study suggests that appropriate store selection for offering deals can possibly augment the effectiveness of deal-based promotions. Specifically, choice of store can alter the context, and thus the perception of the value proposition could increase, which in turn is likely to increase the acceptance of deal-based promotion.

Originality/value
Although several researchers have also examined differences in consumer behavior across cultures yet it appears that there is no direct study that examines the effects of cultural differences on deal proneness using data from three countries (USA, Thailand, and Kenya) which are diverse on all dimensions of national culture. This paper examines the influence of national culture on individual’s propensity to exhibit deal proneness. Furthermore, the paper examines the role of store image on the relationship between national culture and deal proneness.
Digitalization and its influence on business model innovation
Authors: Rachinger Michael , Rauter Romana , Müller Christiana , Vorraber Wolfgang , Schirgi Eva 
Published: August 2018

PurposeIncreased digitalization has influenced various business activities including companies’ business models (BMs) by enabling various new forms of cooperation between companies and leading to new product and service offerings as well as new forms of company relationships with customers and employees. At the same time, this digitalization has put pressure on companies to reflect on their current strategy and explore new business opportunities systematically and at early stages. While research on digitalization in the context of BMs is now gaining increased attention, a research gap still exists in this field since the number of empirical insights is limited. The paper aims to discuss these issues.Design/methodology/approachQualitative empirical data collected from 12 key informants working in two distinctive industries, the media and automotive industries, were collected. An investigation was carried out to examine the differences and similarities among how digitalization influences a company’s value creation, proposition and capture, as well as how firms cope with challenges presented by increased digitalization.FindingsThe findings of the study show that, whilst digitalization is generally considered to be important, the value proposition itself as also the position in the value network determine the perceived available options for business model innovation (BMI) by digitalization. Moreover, the organizational capacities and employee competences were identified as future challenges that will be faced by both industries.Originality/valueThe findings of this study have revealed that representatives of the media and automotive industries perceive both the pressures and opportunities of digitalization regarding BMI; its application and exploitation, however, remain challenging. This study contributes to the existing body of knowledge by providing empirical insights in the context of digitalization and BMI.
Building maps: GIS and student engagement
Authors: McGinn Emily , Duever Meagan 
Published: August 2018

PurposeThis paper aims to detail the use of ESRs ArcMap in the undergraduate history classroom, as an example of pedagogical inquiry and as a method for integrating digital humanities (DH) tools and methods directly into humanities research and pedagogy.Design/methodology/approachThis class is an example of pedagogical inquiry and a method for integrating DH tools and methods directly into humanities research and pedagogy.FindingsWith this approach, students see the immediate application of DH to traditional humanities objects of study and aid these in the pursuit of innovative research questions and methods.Originality/valueThe use of DH in traditional humanities classrooms as a central concept with experts from the libraries integrated into course design and project planning is unique and is a model that could be implemented at other institutions.
Evaluating indicators for international manufacturing network under circular economy
Authors: Mishra Shraddha , Singh Surya Prakash , Johansen John , Cheng Yang , Farooq Sami 
Published: August 2018

Purpose
The purpose of this paper is to find the driving factors for effective and efficient management of international manufacturing network (IMN) which has become increasingly important due to the intensive competition existing in the manufacturing industry. This paper presents a magnified view of different constructs of IMN and identifies the qualitative factors which are broadly classified under different constructs like political, economic, social, technological, legal and environmental.

Design/methodology/approach
Principal component analysis is applied to club identified factors into political, economic, social, technological and legal categories. PESTLE–SWOT approach is used to shortlist the identified factors using the elimination algorithm. Using analytical hierarchy process, weightages and rank of the identified factors are evaluated. Interpretive structural modeling is applied to understand inter-relationship among factors, and to analyze the driving power and dependence of the factors.

Findings
The results obtained from the above approaches are compared to identify most significant factors and the list of IMN enablers is presented using Venn Diagram. Government stability, Economic freedom, economic stability, environmental sustainability and raw material availability are coming out to be the driving factors across all techniques. Finally, the paper provides weights of the driving indicators common across all multi-criteria decision-making techniques considered.

Research limitations/implications
The proposed work provides significant information about the qualitative factors needed to be considered while designing and developing IMN. As identified by literature review and through expert opinions, not all 29 factors responsible for IMN development are crucial. Many factors are either interdependent or driven by others. The paper provides a useful analysis about the driving factors that need to be taken into account.

Originality/value
The study presents a comprehensive analysis of the IMN enablers. Furthermore, it provides managerial and theoretical implications to deal with the complexities encountered while establishing IMN.
Social studies without walls: engaging students in online collaboration across district lines
Authors: Freedman Eric B. , Willigan Lauren , Glading Randall , Rainville Kristin N. 
Published: August 2018

Purpose
Intercultural dialogue and collaboration are critical to social studies education. Yet over the past 30 years, schools in the USA have grown increasingly segregated by race and class. The purpose of this paper is to offer a possible response based in digital technology.

Design/methodology/approach
The authors describe a project called Classes Without Walls that links elementary schools in wealthy suburbs with those in impoverished urban centers. Students at the two schools engage in collaborative activities through online video conferencing.

Findings
The authors explore two sample lessons in depth: a virtual town tour and a social demographics scavenger hunt.

Originality/value
Such activities, they argue, can contribute toward cultural understanding and civic dialogue.
Reproductive effort and success of males in scramble‐competition polygyny: Evidence for trade‐offs between foraging and mate search
Authors: Foley Aaron M. , Hewitt David G. , DeYoung Randy W. , Schnupp Matthew J. , Hellickson Mickey W. , Lockwood Mitch A. 
Published: August 2018

Abstract

Patterns of male reproductive allocation provide insight into life‐history characteristics. The trade‐offs associated with resource and female group defence are well‐defined. However, less is understood about trade‐offs in species that practise scramble‐competition polygyny, where successful strategies may favour competitive mate‐searching rather than contest competition and fighting.

White‐tailed deer (Odocoileus virginianus) practise scramble‐competition polygyny where solitary males search for and assess receptivity of females scattered across the landscape. Physically mature males are expected to do most of the breeding because of the high energetic costs of reproduction and high social status. However, young males may collectively sire one‐third of offspring. To gain a better understanding of trade‐offs associated with scramble‐competition polygyny, we quantified metrics associated with reproductive effort and success.

We quantified changes in body mass of harvested males, energetic costs of locomotion based on movements of GPS radiocollared males and timing of reproduction via temporal genetic parentage assignments.

Young males (1.5 and 2.5 years old) sired offspring, but their mating success was mainly limited to peak rut, when most females were in oestrus. Furthermore, multiple paternity was common, indicating opportunistic reproduction. Reproductive effort, indexed by body mass loss, was highest in prime‐age males (5.5–6.5 years old). Surprisingly, young and postprime males also exhibited significant body mass loss, indicative of investment in reproductive effort. Movement rates increased twofold to fourfold during rut as a function of mate search activities, but cost of locomotion would cause only about one‐third of observed body mass loss. Because males are capital breeders, we infer most of body mass loss is due to reduced foraging.

In scramble‐competition polygyny, the repeated location of potential mates and assessment of their oestrous status appear to be important constituents of male mating strategies. Therefore, mating success may be influenced by time management and spatial memory, and not based solely on social dominance. Thus, reproductive effort should be greater for individuals capable of reducing time foraging. For those that cannot, opportunistic mating opportunities may arise when operative adult sex ratios are low. Our analyses reveal valuable insight into the trade‐offs associated with scramble‐competition polygyny.
Landscape configuration, organic management, and within‐field position drive functional diversity of spiders and carabids
Authors: Gallé Róbert , Happe Anne‐Kathrin , Baillod Aliette Bosem , Tscharntke Teja , Batáry Péter 
Published: August 2018

AbstractAgricultural management intensity and landscape heterogeneity act as the main drivers of biodiversity loss in agricultural landscapes while also determining ecosystem services. The trait‐based functional diversity approach offers a way to assess changes in community functionality across agroecosystems. We focused on carabids and spiders, because they are an important component of crop field biodiversity and have significant biological control potential.We assessed the effect of small‐ vs. large‐scale agricultural landscapes, organic farming, and within‐field position on functional diversity of spiders and carabids. We sampled pairs of organic and conventional winter wheat fields in small‐scale agricultural landscapes (former West Germany) and in neighbouring large‐scale agricultural landscapes (former East Germany). We sampled arthropods with funnel traps in transects at field edges, field interiors (15 m from edge), and field centres.The gradient from field edges towards the centres played an important role: spider body size decreased; ballooning ability increased, and hunting strategy switched from active hunters to more web‐builders—presumably, due to higher microhabitat stability in the field centre. Higher trait diversity of spiders in field edges suggested higher biocontrol potential in small‐scale agriculture. In contrast, carabid feeding switched from herbivores to carnivores, presumably due to higher pest densities inside crop fields. Furthermore, small‐scale agricultural landscapes and organic management supported larger, i.e., less dispersive carabids.Synthesis and applications. In our research, spiders were more sensitive to edge effects and less sensitive to management and landscape composition than carabids. Smaller fields and longer edges, as well as organic management increase carabid functional diversity, which may increase resilience to environmental change. Since many spider species are confined to field edges, the effect of within‐field position on functional diversity is more important in small‐scale agricultural landscapes with more edge habitat than in large‐scale agricultural landscapes. Our findings suggest that European Union policy should acknowledge the high benefits of small‐scale agriculture for the functional role of major predators such as spiders and carabid beetles, as the benefits are equal to those from a conversion to organic agriculture.
Clinical observation of recombinant human endostatin in treating relapsed refractory multiple myeloma
Authors: Huang Hao , Liu Yang , Lin Quan‐de , Liu Yu‐zhang , Liu Li‐na , Zhang Qing‐lan , Yu Feng‐kuan , Song Yong‐ping , Fang Bai‐jun 
Published: August 2018

SummaryRecombinant human endostatin (rhES) can inhibit multiple myeloma, while its clinical efficacy in treating relapsed refractory multiple myeloma (RRMM) has not been assessed. One hundred and eleven RRMM patients were treated with four different regimens: combination of VD (velcade+dexamethasone) and rhES (n = 25), Thalidomide (Tha) and VD (VTD, n = 22) combination, rhES and conventional chemotherapy combination (n = 32), and combination of conventional chemotherapy and Tha (n = 32). Significant differences were found in progression‐free survival (PFS) between rhES combination groups and conventional chemotherapy combination groups. No statistical difference was found in overall response rate, overall survival or incidences of adverse effects. The combination of rhES with VD or conventional chemotherapy is active in patients with RRMM and prolongs the PFS to improve the quality of life.
The Role of Innovation in Farm Economic Sustainability: Generalised Propensity Score Evidence from Irish Dairy Farms
Authors: Läpple Doris , Thorne Fiona 
Published: August 2018

AbstractWe assess the impact of innovation on Irish dairy farm economic sustainability by focusing on profitability, productivity of land and market orientation. A generalised propensity score method is applied to a representative sample of 342 Irish dairy farms. Our empirical findings reveal that innovation increases economic sustainability, but not in a linear way. More specifically, economic gains depend on the level of innovation. Small efforts to increase innovation can lead to economic gains of over €200 per hectare. The results also reveal that innovative farmers can achieve higher economic gains by further innovation. Overall, our findings support the current focus of the Irish extension system on fostering the uptake of innovative technologies and practices in order to achieve an economically sustainable expansion of the dairy sector.
Enantiomeric Identification of Pregabalin by GC‐MS via Methylation and S‐TPC Chiral Derivatization
Authors: Hitchcock Michael L. , Marginean Ioan 
Published: August 2018

AbstractPregabalin is a Schedule V controlled substance which is defined as the (S) enantiomer of 3‐(aminomethyl)‐5‐methylhexanoic acid. It is used legitimately to treat neuropathy in patients with diabetes as well as for epilepsy and fibromyalgia. Pregabalin is an amino acid and an amphoteric compound, which makes it difficult to analyze using the conventional GC‐MS instrumentation found in most forensic drug analysis laboratories. Problems associated with the traditional GC‐MS analysis of pregabalin include selective solubility, ring closure to the corresponding lactam in the GC injection port and/or the MS transfer line and difficulty with chiral derivatization due to the presence of a carboxylic acid moiety. Here, we show that these challenges can be overcome by methylating (capping) the carboxylic acid portion of the pregabalin molecule and converting to the corresponding methyl ester. Once the methyl ester is synthesized, chiral derivatization at the amine can be achieved to identify the controlled (S) enantiomer of pregabalin via GC‐MS.
CREDENTIALING DECISIONS AND CRIMINAL RECORDS: A NARRATIVE APPROACH*
Authors: DENVER MEGAN , EWALD ALEC 
Published: August 2018

AbstractDecision makers such as employers and state occupational licensing officials are often encouraged or required to incorporate evidence of rehabilitation into hiring decisions when applicants have criminal records. Current policy movements at the local, state, and federal levels may increase the use of such individualized assessments. Yet little is known about which types of information these decision makers use, how they evaluate evidence, and how they ultimately make determinations. We examine a sample of 50 unarmed security guard licensing decisions in New York State using content analysis. We find that administrative law judges rely on a narrative framework to document whether applicants currently have a prosocial identity and merit licensure. Judges typically describe one of two prosocial identity narratives for successful applicants: The applicant demonstrates achieving meaningful change, or his or her criminal record represents an aberration. Two factors seem vital to these assessments: applicants’ postconviction trustworthiness, as demonstrated through good conduct or inferred through positive appraisals, and credible testimony. In narrative explanations, personal responsibility and adult milestones are often discussed, reflecting a judicial nod to the notion of a “transition to adulthood.” The results hold implications for scholars and policy makers examining employment barriers, stigma remediation, and collateral sanctions for individuals with criminal records.