5916 research outputs found
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Search for fractionally charged particles in proton-proton collisions at √s=13 TeV
No full textA search is presented for fractionally charged particles with charges below (Formula presented), using their small energy loss in the tracking detector as a key variable to observe a signal. The analyzed dataset corresponds to an integrated luminosity of (Formula presented) of proton-proton collisions collected at (Formula presented) in 2016-2018 at the CERN LHC. This is the first search at the LHC for new particles with a charge between (Formula presented) and (Formula presented), including an extension of previous results at a charge of (Formula presented). Masses up to 640 GeV and charges as low as (Formula presented) are excluded at 95% confidence level. These are the most stringent limits to date for the considered Drell-Yan-like production mode.SC (Armenia), BMBWF and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, FAPERGS, and FAPESP (Brazil); MES and BNSF (Bulgaria); CERN; CAS, MoST, and NSFC (China); MINCIENCIAS (Colombia); MSES and CSF (Croatia); RIF (Cyprus); SENESCYT (Ecuador); ERC PRG, RVTT3 and TK202 (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); SRNSF (Georgia); BMBF, DFG, and HGF (Germany); GSRI (Greece); NKFIH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); MSIP and NRF (Republic of Korea); MES (Latvia); LAS (Lithuania); MOE and UM (Malaysia); BUAP, CINVESTAV, CONACYT, LNS, SEP, and UASLP-FAI (Mexico); MOS (Montenegro); MBIE (New Zealand); PAEC (Pakistan); MES and NSC (Poland); FCT (Portugal); MESTD (Serbia); MCIN/AEI and PCTI (Spain); MOSTR (Sri Lanka); Swiss Funding Agencies (Switzerland); MST (Taipei); MHESI and NSTDA (Thailand); TUBITAK and TENMAK (Turkey); NASU (Ukraine); STFC (United Kingdom); DOE and NSF (USA).Publisher versio
If it ain't broke, should you still fix it? Effects of incorporating user feedback in product development on mobile application ratings
No full textHow can firms utilize collective user feedback in reviews to better tailor their products to improve customer satisfaction? Based on an automated text analysis of 1,075,704 reviews and a content analysis of 3255 mobile application updates, observed over 460 apps' first year on the market, this paper investigates the role of collective user feedback on user ratings during the process of developing successive mobile app generations. The results reveal that the rewards associated with responding to user feedback and the penalties due to ignoring this feedback can be substantial. The impact of the match/mismatch between user feedback and product development decisions depends on the topic of the feedback and the timing of the update. The findings provide app developers with guidance on the challenge of prioritizing possible development paths: (1) improve ratings by promptly matching user feedback that require new content or smooth functioning of the app; (2) avoid rating penalties by continuously improving existing content or ensuring compatibility with most recent operating systems and devices. The implications shed light on the fundamental question of whether and when to pro-act on or re-act to the voice of the customer. (c) 2024 The Authors.Publisher versio
Exploring media portrayals of diversity, equity and inclusion (DEI) backlash in aviation
No full textPurposeThis article aims to explore how the backlash against diversity, equity and inclusion (DEI) programs in the aviation industry is portrayed in the media. Through a content analysis of news articles, the goal is to uncover the key narratives, themes and perceptions driving resistance to DEI initiatives.Design/methodology/approachThe study uses content analysis to examine how media portrayals reflect the backlash against DEI initiatives in the aviation industry. A total of 96 relevant articles were selected for their focus on key issues at the intersection of DEI and aviation, aiming to capture real-time public and industry perceptions while uncovering the broader political, cultural and social dynamics shaping these narratives.FindingsThe analysis reveals that much of the opposition to DEI in aviation centers around safety concerns, with critics, particularly in the US, arguing that diversity initiatives may compromise the industry's rigorous standards. Political polarization further intensifies these concerns. While race is the dominant theme in the discourse, gender and disability also emerge as points of tension, especially in reaction to inclusive hiring goals.Practical implicationsUnderstanding how DEI backlash is represented in the media helps identify the underlying themes, biases and misconceptions driving resistance, offering insights into how such challenges can be addressed effectively. Aviation organizations must transparently integrate concerns into their DEI strategies and communicate clearly to build trust and correct misconceptions.Originality/valueThis study offers a unique examination of DEI challenges in aviation - an industry with global reach, strict regulations and a diverse workforce - addressing a critical yet overlooked gap in the literature
Compatibility between HPEG type PCEs with various anionic charge densities and Portland cements with different C3A contents
No full textThis study focused on the compatibility of phosphate and sulfonate-substituted polycarboxylate ether-based water-reducing admixtures (PCE) exhibiting different anionic charge densities with Portland cements having different C3A contents. For this purpose, the effects of synthesized PCEs on the fresh, rheological, and hardened state properties of the paste and mortar mixtures were investigated. According to the results, anionic charge density greatly affected the performance of PCE. In terms of the investigated parameters, the best performance was obtained with a high anionic charge density PCE containing 5% sulfonate anionic group. It was also observed that the positive effect of increasing the charge density of the phosphate anionic group was less efficient compared to the other studied PCEs. In addition, the effectiveness of anionic charge density was found to be largely PCE dosage dependent. Increasing the cement C3A content to 9% caused cement-PCE incompatibility. In addition, the PCE anionic charge density change had variable effects on the paste and mortar mixtures in terms of fresh state and rheological properties.TÜBİTAKPublisher versio
RSEA: A web server for pathway enrichment analysis of metabolic reaction sets
No full textChanges in biological pathways provide essential clues about metabolism. Genome-scale metabolic models (GEM) are network-based templates that computationally describe all stoichiometric associations and gene-protein reaction (GPR) relations found in an organism for all its metabolic genes and metabolites. Using reaction stoichiometry as input, GEMs mathematically simulate metabolic reaction fluxes occurring in an organism and predict changes in the metabolic system under the relevant condition. Multiple tools and approaches in the literature can capture fluxes sensitive to a given condition by using GEMs. However, functional enrichment analysis of these reaction lists in a systems biology perspective is not straightforward. Here, we introduce RSEA to annotate given reaction sets to significantly related metabolic pathways: Reaction Set Enrichment Analysis web server tool. RSEA converts given reaction list derived from GEMs into proper reaction identifiers and statistically analyze its enrichment in metabolic pathways. RSEA is designed to provide researchers with a practical and user-friendly platform to explore and interpret sets of reactions in biological pathways and freely available online ().Publisher versio
Build or buy corporate social responsibility? Socially responsible brand acquisitions and firm csr perceptions
No full textBecause development of socially responsible brands is costly and risky, acquisition of socially responsible brands (SRB) has emerged as a frequently employed approach to enhancing firms' CSR profile. This research explores the effectiveness of SRB acquisition (versus brand development) in increasing firm CSR perceptions and the moderating role of symbolic brand value in this relationship. This research demonstrates that SRB acquisition (vs. development) is generally less effective in signaling firm CSR and that the effect of SRB acquisitions on firm CSR perceptions depends on the acquired brand's symbolic value. Seven experiments show that when symbolic brand value is high, acquisition (vs. development) of SRB harms the acquired brand's credibility and subsequently reduces firm CSR perceptions. Two additional studies explore the role of brand architecture and communication strategies in mitigating the negative impact of highly symbolic, SRB acquisitions on consumers' perceptions of firm CSR.Publisher versio
On the high-temperature flow response of additive-manufactured and heat-treated inconel 718 superalloy
No full textThis investigation delves into the influence of heat treatment on the ambient temperature and high-temperature mechanical properties of nickel-based 718 superalloy additive-manufactured through laser-directed energy deposition. The findings indicate that direct aging heat treatment leads to enhanced strength in comparison to as-built condition for all straining temperatures. In contrast to ambient response, elevated temperature deformation of both the as-built and heat-treated conditions result in lower strength levels exhibiting serrated flow response. At temperatures over 700 degrees C, the heat-treated condition displays lack of hardening with a near elastic-perfectly plastic behavior. Fracture surface examinations reveal a mixed type of fracture, where the manifestation of cleavage planes increase after heat treatment.Turkiye Cumhuriyeti Kalkinma Bakanlig
Optimizing the design of High-Volume Fly Ash (HVFA) cementitious materials: Enhancing the performance with clinoptilolite zeolite modification
No full textFulfilling the ambition for maintaining global carbon neutrality, utilizing alternative low-carbon resources is becoming more essential in the design of building materials. Recently, high-volume fly ash (HVFA) cementitious materials have been gaining attention in the industry due to their low environmental impact in terms of carbon dioxide (CO2) emissions and resource efficiency. However, applications are limited because of major material-related problems, such as increasing setting time and low early strength development. This study aims to overcome the challenges in the material system by modifying HVFA mortars with clinoptilolite zeolite. The HFVA mortar designs were established using 70%, 60%, and 50% F-type fly ash. A portion of fly ash (5 and 10%) was replaced with reactive clinoptilolite zeolite. The influence of zeolite replacement on the performance of HFVA cementitious materials was evaluated by compressive strength and initial setting time. The rheological analysis assessed the impact of zeolite addition on the yield stress and thixotropy of HVFA pastes. The results show that adding clinoptilolite zeolite reduced the delay in initial setting time in HFVA mortars and increased the yield stress and thixotropy of cementitious pastes. On the other hand, incorporating zeolite into the mix resulted in a lower compressive strength than neat HFVA mortars without any zeolite. Therefore, clinoptilolite zeolite has the potential to be used as a viscosity-modified agent in HVFA cementitious materials instead of chemical admixtures.Science Academy's Young Scientist Awards Program (BAGEP) of Turke
Mind the standardization gap: An emerging market phenomenon
No full textThis paper introduces the "standardization gap" as perceptual differences between consumers and managers regarding a global brand's standardization of its marketing mix. Studies utilizing triadic data from managers, consumers, and advertisements document that emerging market consumers perceive global brands as less standardized than they are. A perceived "standardization gap" exists in product characteristics and positioning. Positioning standardization gaps decrease consumers' brand equity, willingness to pay, and the brand's market share in the subsidiary market. Interestingly, consumers' product standardization perceptions trigger two opposing mechanisms, a positive mechanism via better tailoring to local needs and a negative mechanism through inferences of lower quality and inferior products. These opposing mechanisms cancel each other out in affecting consumer brand equity. Managers can enhance positioning standardization perceptions by standardizing advertising in emerging markets. However, standardized advertising is less effective in shaping product standardization perceptions
Shifting work patterns and workplace perceptions post-COVID-19
No full textAs many companies encourage employees to return to the office following COVID-19, it is timely to examine its impact on work patterns and workplace perceptions. This study analyses 5,644 responses to a post-occupancy evaluation survey in Australian office buildings, matched pre-, during, and post-pandemic. Significant shifts toward flexible work arrangements were observed, with a tripling of employees working less than 10 h in the office and a 62% decline in those working over 30 h. Interaction effects between COVID-19 periods, office hours (chi 2 = 528.7, p < 0.001), and workspace type (chi 2 = 149.6, p < 0.001) were noted. Satisfaction with indoor environmental quality components, especially 'Spatial Environment', 'Daylight & Views', and 'Personal Control' post-COVID declined significantly (p < 0.05). 'Privacy & Disruption' emerged as the strongest predictor of perceived productivity and health. The findings highlight the need for optimized spatial layouts to enhance privacy, reduce disruptions, and promote a healthy office environment, offering key insights into office workers' evolving post-pandemic needs.Australian Research Counci