bluuebunny/crossref_metadata_2025_split huggingface dataset:
Mutations of Fake Weighted Projective Planes
Authors: Akhtar Mohammad E. , Kasprzyk Alexander M. 
Published: June 2015

AbstractIn previous work by Coates, Galkin and the authors, the notion of mutation between lattice polytopes was introduced. Such mutations give rise to a deformation between the corresponding toric varieties. In this paper we study one-step mutations that correspond to deformations between weighted projective planes, giving a complete characterization of such mutations in terms ofT-singularities. We also show that the weights involved satisfy Diophantine equations, generalizing results of Hacking and Prokhorov.
The Great Escape: The Unaddressed Ethical Issue of Investor Responsibility for Corporate Malfeasance
Authors: Wesley II Curtis L. , Ndofor Hermann Achidi 
Published: June 2015

ABSTRACT:Corporate governance scholarship focuses on executive malfeasance, specifically its antecedents and consequences. Academic efforts primarily focus on prevention while practitioners are often left to hold firms and executives (including directors) accountable through a variety of sanctions. Even so, executive malfeasance still occurs even in the face of the vast resources used to monitor, control, and penalize firms and executives. In this paper, we posit equity markets do not adequately penalize firms for inaccurate earnings reports. Using a sample of 129 firms identified by the U.S. General Accounting Office for reporting fraudulent earnings in 10K filings, we found support for our assertion. Consequently, the one party who may benefit but escape accountability is firm shareholders. Moreover, we find little empirical evidence that the subset of firms sanctioned by the SEC is penalized more heavily than the full sample by markets at the time they report and correct their 10K filings. Our results raise serious questions whether such managerial opportunism can be eradicated given the apparent lack of consequences in equity markets for investors. We also question whether the SEC is able to discern between fraud and error in financial reporting and its implications.
Buying health: assessing the impact of a consumer-side vegetable subsidy on purchasing, consumption and waste
Authors: Smith-Drelich Noah 
Published: June 2015

AbstractObjectiveTo measure the impact of a reimbursement-based consumer subsidy on vegetable expenditures, consumption and waste.DesignTwo-arm randomized controlled trial; two-week baseline observation period, three-week intervention period. Participants’ vegetable expenditures, consumption and waste were monitored using receipts collection and through an FFQ. During the intervention period, the treatment group received reimbursement of up to 50 US dollars ($) for purchased vegetables.SettingParticipants were solicited from Palo Alto, CA, USA using materials advertising a ‘consumer behavior study’ and a small participation incentive. To prevent selection bias, solicitation materials did not describe the specific behaviour being evaluated.SubjectsOne hundred and fifty potential participants responded to the solicitations and 144 participants enrolled in the study; 138 participants completed all five weekly surveys.ResultsAccounting for the control group (n 69) and the two-week baseline period, the intervention significantly impacted the treatment group’s (n 69) vegetable expenditures (+$8·16 (sd 2·67)/week, P<0·01), but not vegetable consumption (+1·3 (sd 1·2) servings/week, P=0·28) or waste (−0·23 (sd 1·2) servings/week, P=0·60).ConclusionsThe consumer subsidy significantly increased participants’ vegetable expenditures, but not consumption or waste, suggesting that this type of subsidy might not have the effects anticipated. Reimbursement-based consumer subsidies may therefore not be as useful a policy tool for impacting vegetable consumption as earlier studies have suggested. Moreover, moderation analysis revealed that the subsidy’s effect on participants’ vegetable expenditures was significant only in men. Additional research should seek to determine how far reaching gender-specific effects are in this context. Further research should also examine the effect of a similar consumer subsidy on high-risk populations and explore to what extent increases in participants’ expenditures are due to the purchase of more expensive vegetables, purchasing of vegetables during the study period that were consumed outside the study period, or a shift from restaurant vegetable consumption to grocery vegetable consumption.
Terahertz Plasmonic Field-Induced Conductivity Modulation in Gold
Authors: Elezzabi A. Y. , Maraghechi P. , Greig S. R. 
Published: June 2015

AbstractWe report the observation of terahertz (THz) electric field induced conductivity modulation in sub-wavelength gold plasmonic media. Through all-THz pump-probe time-resolved transmission spectroscopy, we demonstrate that the presence of induced surface charges influences near-field mediated light propagation. The phenomenon is ascribed to the enhanced metal conductivity due to enhanced surface density of conduction electrons. The surface induced charge dynamics are revealed via phase-dependent time-resolved signatures. The phenomenon is a prelude to a wide class of ultrafast active THz plasmonic devices and paves the way for plasmonic field effects devices, similar to semiconductor ones.
DW-F5: A novel formulation against malignant melanoma from Wrightia tinctoria
Authors: Antony Jayesh , Saikia Minakshi , V Vinod. , Nath Lekshmi. R. , Katiki Mohana Rao , Murty M.S.R. , Paul Anju , A Shabna , Chandran Harsha , Joseph Sophia Margaret , S Nishanth Kumar. , Panakkal Elizabeth Jayex , V Sriramya I. , V Sridivya I. , Ran Sophia , S Sankar , Rajan Easwary , Anto Ruby John 
Published: June 2015

AbstractWrightia tinctoria is a constituent of several ayurvedic preparations against skin disorders including psoriasis and herpes, though not yet has been explored for anticancer potential. Herein, for the first time, we report the significant anticancer properties of a semi-purified fraction, DW-F5, from the dichloromethane extract of W. tinctoria leaves against malignant melanoma. DW-F5 exhibited anti-melanoma activities, preventing metastasis and angiogenesis in NOD-SCID mice, while being non-toxic in vivo. The major pathways in melanoma signaling mediated through BRAF, WNT/β-catenin and Akt-NF-κB converging in MITF-M, the master regulator of melanomagenesis, were inhibited by DW-F5, leading to complete abolition of MITF-M. Purification of DW-F5 led to the isolation of two cytotoxic components, one being tryptanthrin and the other being an unidentified aliphatic fraction. The overall study predicts Wrightia tinctoria as a candidate plant to be further explored for anticancer properties and DW-F5 as a forthcoming drug formulation to be evaluated as a chemotherapeutic agent against malignant melanoma.
A near-wearless and extremely long lifetime amorphous carbon film under high vacuum
Authors: Wang Liping , Zhang Renhui , Jansson Ulf , Nedfors Nils 
Published: June 2015

AbstractProlonging wear life of amorphous carbon films under vacuum was an enormous challenge. In this work, we firstly reported that amorphous carbon film as a lubricant layer containing hydrogen, oxygen, fluorine and silicon (a-C:H:O:F:Si) exhibited low friction (~0.1), ultra-low wear rate (9.0 × 10–13 mm3 N–1 mm–1) and ultra-long wear life (>2 × 106 cycles) under high vacuum. We systematically examined microstructure and composition of transfer film for understanding of the underlying frictional mechanism, which suggested that the extraordinarily excellent tribological properties were attributed to the thermodynamically and structurally stable FeF2 nanocrystallites corroborated using first-principles calculations, which were induced by the tribochemical reaction.
Temporal MRI characterization, neurobiochemical and neurobehavioral changes in a mouse repetitive concussive head injury model
Authors: Yang Zhihui , Wang Ping , Morgan Drake , Bruijnzeel Adriaan W. , Lin Dan , Pan Jianchun , Lin Fan , Strang Kevin H. , Selig Tyler M. , Perez Pablo D. , Febo Marcelo , Chang Binggong , Rubenstein Richard , Wang Kevin K.W. 
Published: June 2015

AbstractSingle and repeated sports-related mild traumatic brain injury (mTBI), also referred to as concussion, can result in chronic post-concussive syndrome (PCS), neuropsychological and cognitive deficits, or chronic traumatic encephalopathy (CTE). However PCS is often difficult to diagnose using routine clinical, neuroimaging or laboratory evaluations, while CTE currently only can be definitively diagnosed postmortem. We sought to develop an animal model to simulate human repetitive concussive head injury for systematic study. In this study, mice received single or multiple head impacts by a stereotaxic impact device with a custom-made rubber tip-fitted impactor. Dynamic changes in MRI, neurobiochemical markers (Tau hyperphosphorylation and glia activation in brain tissues) and neurobehavioral functions such as anxiety, depression, motor function and cognitive function at various acute/subacute (1-7 day post-injury) and chronic (14-60 days post-injury) time points were examined. To explore the potential biomarkers of rCHI, serum levels of total Tau (T-Tau) and phosphorylated Tau (P-Tau) were also monitored at various time points. Our results show temporal dynamics of MRI consistent with structural perturbation in the acute phase and neurobiochemical changes (P-Tau and GFAP induction) in the subacute and chronic phase as well as development of chronic neurobehavioral changes, which resemble those observed in mTBI patients.
An all-silicon single-photon source by unconventional photon blockade
Authors: Flayac Hugo , Gerace Dario , Savona Vincenzo 
Published: June 2015

AbstractThe lack of suitable quantum emitters in silicon and silicon-based materials has prevented the realization of room temperature, compact, stable and integrated sources of single photons in a scalable on-chip architecture, so far. Current approaches rely on exploiting the enhanced optical nonlinearity of silicon through light confinement or slow-light propagation and are based on parametric processes that typically require substantial input energy and spatial footprint to reach a reasonable output yield. Here we propose an alternative all-silicon device that employs a different paradigm, namely the interplay between quantum interference and the third-order intrinsic nonlinearity in a system of two coupled optical cavities. This unconventional photon blockade allows to produce antibunched radiation at extremely low input powers. We demonstrate a reliable protocol to operate this mechanism under pulsed optical excitation, as required for device applications, thus implementing a true single-photon source. We finally propose a state-of-art implementation in a standard silicon-based photonic crystal integrated circuit that outperforms existing parametric devices either in input power or footprint area.
A spontaneous depressive pattern in adult female rhesus macaques
Authors: Qin Dongdong , Rizak Joshua , Chu Xunxun , Li Zhifei , Yang Shangchuan , Lü Longbao , Yang Lichuan , Yang Qing , Yang Bo , Pan Lei , Yin Yong , Chen Lin , Feng Xiaoli , Hu Xintian 
Published: June 2015

AbstractNon-human primates offer unique opportunities to study the development of depression rooted in behavioral and physiological abnormalities. This study observed adult female rhesus macaques within social hierarchies and aimed to characterize the physiological and brain abnormalities accompanying depressive-like behavior. The behaviors of 31 female rhesus macaques from 14 different breeding groups were video recorded and the footage was analyzed using the focal animal technique. There were 13 monkeys who never displayed huddling behavior (non-huddlers). The remaining 18 monkeys were divided into two groups according the mean time spent in the huddle posture. Four monkeys were designated as high huddlers, whereas the other 14 monkeys were low huddlers. An inverse relationship was discovered between social rank and depression. High huddlers spent more time engaging in physical contact and in close proximity to other monkeys, as well as less time spontaneously and reactively locomoting, than low huddlers and/or non-huddlers. Cortisol levels measured from the hair were elevated significantly in high huddlers compared with low huddlers and non-huddlers and the measured cortisol levels were specifically higher in high huddlers than subordinate or dominant control monkeys. Regional cerebral blood flow data revealed significant and widespread decreases in high huddlers compared with non-huddlers.
Optomechanically induced transparency in the presence of an external time-harmonic-driving force
Authors: Ma Jinyong , You Cai , Si Liu-Gang , Xiong Hao , Li Jiahua , Yang Xiaoxue , Wu Ying 
Published: June 2015

AbstractWe propose a potentially valuable scheme to measure the properties of an external time-harmonic-driving force with frequency ω via investigating its interaction with the combination of a pump field and a probe field in a generic optomechanical system. We show that the spectra of both the cavity field and output field in the configuration of optomechanically induced transparency are greatly modified by such an external force, leading to many interesting linear and non-linear effects, such as the asymmetric structure of absorption in the frequency domain and the antisymmetry breaking of dispersion near ω = ωm. Furthermore, we find that our scheme can be used to measure the initial phase of the external force. More importantly, this setup may eliminate the negative impact of thermal noise on the measurement of the weak external force in virtue of the process of interference between the probe field and the external force. Finally, we show that our configuration can be employed to improve the measurement resolution of the radiation force produced by a weak ultrasonic wave.
Retail shopper marketing: the future of promotional flyers
Authors: Ziliani Cristina , Ieva Marco 
Published: June 2015

Purpose– The purpose of this paper is to evaluate the recent evolution of store flyers to illustrate how a tool of traditional marketing can be applied to generate insight on customer “couch-to-cart” behaviour thus supporting an innovating shopper marketing approach. The authors support this position by elaborating on three themes: first, the recent evolution of flyers, driven by incorporation of customer insight derived from loyalty data and by new features enabled by flyer digitalization; second, the evolution of the flyer planning and management process, related to opportunities and challenges in the retailer organisational structure; and third, the rise of online flyer aggregators.Design/methodology/approach– The authors used field interviews. The authors included the perspectives of different subjects involved in planning and delivering flyer-based promotions. Secondary data were also collected regarding flyer activities of a sample of 67 retail groups across 15 countries and four industries.Findings– Critical aspects of flyers as retail marketing tools emerged. The authors found that there are changes taking place in flyer-based promotion caused by “fertilisation” by loyalty data and digital that have not been captured by research so far. Retailers are experimenting with flyer aggregators. These infomediaries generate new insight on various aspects of the shopping cycle. Retailers can use these metrics to improve flyer strategy and negotiation with suppliers. The authors shed light on obstacles that prevent exploitation of shopper marketing benefits and value. Among the managerial challenges the authors found retailer organisation and management and functional integration.Research limitations/implications– The paper points to four areas for future research: promotion innovation, electronic intermediaries, marketing organisation and competition. Research questions are suggested.Practical implications– This study contributes to retail management by identifying best practices that support promotional campaign development in a shopper marketing perspective. The authors provide suggestions around the incorporation of loyalty data in the flyer planning process and the creation of inter-functional teams.Originality/value– Academic research has long addressed flyer-based promotion, but has not linked it to innovation or shopper marketing. Little or no attention has been paid to the flyer management process and its organisational dimensions, nor to digital flyers.
The influence of sales force technology use on outcome performance
Authors: Román Sergio , Rodríguez Rocío 
Published: June 2015

Purpose
– This paper aims to examine whether and how sales technology (ST) use helps salespeople perform better through the modification of their customer-qualification skills and customer-oriented selling behaviors. Also, the moderating role of salespeople’s technology self-efficacy is analyzed. Technological advancements have become an integral part of the personal selling process, yet the relationship between salesperson’s technology use and salesperson performance remains primarily unsubstantiated.

Design/methodology/approach
– Data are collected from a diverse sample of 265 salespeople across different industries. Hypotheses are tested with structural equation modeling.

Findings
– The results indicate that a salesperson’s customer-qualification skills and customer-oriented selling fully mediate the effect of technology use on outcome performance. In addition, salespeople high in technology self-efficacy seem to get the most out of their technology use. More specifically, the influence of technology use on customer-qualification skills and customer-oriented selling is stronger for salespeople with high rather than low self-efficacy. Interestingly, technology use only increases performance for salespeople with high self-efficacy.

Originality/value
– Prior evidence on the consequences of ST on performance is not conclusive. The study adds value to both managers and scholars providing new insights of the link between technology use and performance and its underlying mediating and moderating processes. Without an understanding of the ST-performance relationship, sales managers may increase ST costs but decrease potential returns.
Life on heels and making deals
Authors: Bodolica Virginia , Spraggon Martin 
Published: June 2015

Purpose– The purpose of this paper is to discuss issues related to entrepreneurial undertakings of women in the United Arab Emirates (UAE) with the purpose of contributing to the development of context-dependent knowledge of entrepreneurship. Focussing on the life narratives of two expatriate female business-owners who created a common enterprise, the case permits to uncover and critically assess the different stages of the entrepreneurial process in a unique cultural setting.Design/methodology/approach– The authors employed a narrative case study approach to allow for a rich contextual information to emerge from the detailed accounts of individual lives and entrepreneurial experiences of case protagonists. Data were gathered from multiple sources (e.g. interviews, e-mail exchanges, web sites) and subsequently analyzed and coded into prevalent themes by two researchers and one assistant independently, permitting to achieve both data and investigator triangulation.Findings– This case elucidates the entrepreneurial journey of two female expatriates who launched their individual businesses and joined efforts in the establishment of Heels and Deals (H & D), a network that helps UAE-based women-entrepreneurs reach their professional aspirations within a patriarchal society. The cofounders are now at a cross-roads where they have to make a choice between running their own businesses to secure their sustainability and focussing on H & D to lead its international expansion. The narratives of the case protagonists allow contrasting the discovery and creation views of entrepreneurship and examining the role of leadership skills and personality characteristics in entrepreneurial success.Originality/value– Despite an increasing number of businesswomen in the UAE, little is known about the way they approach the complex entrepreneurial process and deal with challenges and opportunities faced on the road. The case bridges this gap by offering the possibility to reflect on how expatriate female entrepreneurs in a Middle-Eastern context balance multiple trade-offs to succeed in their business-related endeavors.
Facilities management: tracing its development trajectory
Authors: Meng Xianhai 
Published: June 2015

Purpose– The purpose of this paper is to provide facilities management (FM) practitioners and researchers with a better understanding of the FM industry sector by analyzing the trend of its development.Design/methodology/approach– Semi-structured interview is adopted in this research as the main methodology. In total, 30 FM professionals in the UK were interviewed to explore the past, present and future of FM. The analysis of interview results helps to identify the key areas in which FM has changed, is changing and will change. It also helps to explain the implications of FM development in each key area.Findings– FM evolves and matures continuously. It is important for FM organizations and practitioners to recognize the dynamic nature of this industry sector, based on which they can develop appropriate strategies to adapt to changing circumstances. This is probably the only way for them to keep pace with the times.Originality/value– Both backward looking and forward looking are crucial to the development of an industry sector. However, existing studies on FM development are conducted through either review or outlook. On the other hand, most of these studies focus on one particular management area or one particular industry sector. Based on 30 expert interviews, this research attempts to bridge the knowledge gap and analyze the trend of FM development in a systematic way. A better understanding of the trend provides a possibility and a guide for FM organizations and practitioners to pursue best practice.
Microbial diversity and community structure along a lake elevation gradient inYosemiteNationalPark,California,USA
Authors: Hayden Curtis J. , Beman J. Michael 
Published: June 2015

SummaryMicrobial communities are key components of lake ecosystems and play central roles in lake biogeochemical cycles. Freshwater lakes, in turn, have a disproportionate influence on global carbon and nitrogen cycling, while also acting as ‘sentinels’ of environmental change. Determining what factors regulate microbial community dynamics and their relationship to lake biogeochemistry is therefore essential to understanding global change feedbacks. We usedIlluminasequencing of >2 million 16SrRNAgenes to examine microbial community structure and diversity in relation to spatial, temporal and biogeochemical variation, within and across lakes located along a 871 m elevation gradient inYosemiteNationalPark,California,USA. We captured a rich microbial community that included many rare operational taxonomic units (OTUs), but was dominated by a few bacterial classes andOTUs frequently detected in other freshwater ecosystems. Neither richness, evenness nor overall diversity was directly related to elevation. However, redundancy analysis showed that changes in microbial community structure were significantly related to elevation. Along with sampling period and dissolved nutrient concentrations, 29% of the variation in community structure could be explained by measured variables – in congruence with studies in other lakes using different techniques. We also found a distance–decay relationship in microbial community structure across lakes, suggesting that both local environmental factors and dispersal play a role in structuring communities.