Miracle-dz/UniFAR-FTUs huggingface dataset:
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Social networks are omnipresent in both our private and professional lives. As social beings, we thrive on the ability provided to us by the technology to be social. But what does it really mean to be social within social networks? To better capture and measure socialness in that context, we look beyond measures of being active and having many connections with others, like Social Network Analysis does. In this paper, we zoom in on a new dimension that captures the content of social exchanges. We propose, that social(ness) markers related to content can be divided into four facets: being personal, being curious, being respectful, and share with others. A correlation analysis is applied to showcase how each facet is related to the dimensions of activity and connectivity. As a result, we provide a comprehensive measurement model for socialness in computer-mediated and networked environments
The effect of diet on the structure of gut bacterial community of sympatric pair of whitefishes (Coregonus lavaretus): one story more

In the Coregonus lavaretus complex may be found lacustrine sympatric pairs, which serves as an intriguing model for studying different aspects of fish evolutionary biology. One such sympatric whitefish pair inhabits Teletskoye Lake (West Siberia, Russia) and includes a “large” form (Coregonus lavaretus pidschian (Gmelin, 1789)) and a “small” form (C. l. pravdinellus (Dulkeit, 1949)). C. l. pravdinellus has a narrow trophic specialization and feeds on zooplankton, whereas the diet of C. l. pidschian is based on benthic prey. In the present study we aimed to address the question of how the gut microbial community reflects the divergence in diet of a sympatric pair of whitefish. Studied samples included the mucosa and content were collected for cardiac and pyloric stomach, anterior, middle, and posterior intestine, but only mucosa was collected for the pyloric caeca. In addition, water, sediment, macrophyte (environmental microbiota) and invertebrate (microbiota of prey) samples were collected in the same location. The V3–V4 region of the 16S rRNA genes was chosen for microbiome analysis and the software PICRUSt used to estimate the difference functional roles of the microbiota. The number of OTUs and Chao1 index in mucosa and content of cardiac and pyloric stomach were significantly different between whitefish. Significant differences were observed between whitefish for content from different parts of the intestine in terms of OTU number and Chao1 indices, whereas for mucosa from the same parts of intestine these differences were absent. No significant differences were found for diversity estimates of mucosa and content of different parts of the gut (there were a few exceptions) between whitefish. The form of whitefish and the segment of the digestive system were factors with a significant determinative effect on the structure of the microbiota from gut mucosa and content. The most dominant phyla in mucosa and content of cardiac and pyloric stomach was Proteobacteria (57.0–84.0%) for both whitefish. Throughout the intestine of C. l. pidschian the dominant phyla in mucosa were Proteobacteria (38.8%) and Firmicutes (15.6%), whereas for C. l. pravdinellus–Tenericutes (49.6%) and Proteobacteria (28.1%). For both forms, the phylum Spirochaetes was found in a significant amount (20.0–25.0%) in the mucosa of the posterior intestine. While for the content obtained from anterior, middle and posterior intestines, the dominant bacterial phyla were the same as those described for mucosa from the same parts of the intestine for both whitefish. The bacterial community of the prey and environment was significantly different from bacterial communities found for all parts of the gut mucosa for both whitefish, with the exception of the mucosa of the cardiac stomach. According to PICRUSt the highest level of differences between whitefish at the L3 level were found for the intestinal mucosa (75.3%), whereas the lowest one was registered for stomach content (38.8%).
The Effects of Blue Light – Filtering Intraocular Lenses on the Protection and Function of the Visual System

: Filtration of high-energy short-wave visible light (blue light) to improve vision and protect against damage has evolved both in aquatic animals and terrestrial species. In humans, pigments in the inner layer of the macula absorb wavelengths between 400 and 520 nm and function to improve visual performance. In patients who undergo cataract surgery, replacing cataractous lenses with arti ﬁ cial intraocular lenses (IOLs) that do not mimic normal healthy adult lenses could result in preventable negative visual effects, including glare disability. Blue light – ﬁ ltering (BLF) IOLs were designed to ﬁ lter short-wave light in addition to ultraviolet light and mimic the natural crystalline lens. Current studies indicate that BLF IOLs may provide protection from blue light – induced retinal damage and slow the development and progression of age-related macular degeneration. Additionally, BLF IOLs have been shown to improve chromatic contrast, reduce photostress recovery time, reduce glare disability and discomfort, and generally improve visual performance under glare conditions. Although a number of concerns have been raised about the relative risks versus the bene ﬁ ts of BLF IOLs, recent studies reported no adverse effects on visual function or contrast under photopic conditions, no long-term effects on color vision, and no detrimental effects on circadian rhythms with BLF IOLs. Based on the current understanding of the ﬁ eld, evidence suggests that BLF IOLs would be returning the eye to a more natural state compared with non-BLF lenses.
Co-expression analysis and ceRNA network reveal eight novel potential lncRNA biomarkers in hepatocellular carcinoma

Background Hepatocellular carcinoma (HCC) is the most common primary liver cancer in the world, with a high degree of malignancy and recurrence. The influence of the ceRNA network in tumor on the biological function of liver cancer is very important, It has been reported that many lncRNA play a key role in liver cancer development. In our study, integrated data analysis revealed potential eight novel lncRNA biomarkers in hepatocellular carcinoma. Methods Transcriptome data and clinical data were downloaded from the The Cancer Genome Atlas (TCGA) data portal. Weighted gene co-expression network analysis was performed to identify the expression pattern of genes in liver cancer. Then, the ceRNA network was constructed using transcriptome data. Results The integrated analysis of miRNA and RNAseq in the database show eight novel lncRNAs that may be involved in important biological pathways, including TNM and disease development in liver cancer. We performed function enrichment analysis of mRNAs affected by these lncRNAs. Conclusions By identifying the ceRNA network and the lncRNAs that affect liver cancer, we showed that eight novel lncRNAs play an important role in the development and progress of liver cancer.
Comparative analysis of the remineralization potential of CPP–ACP with Fluoride, Tri-Calcium Phosphate and Nano Hydroxyapatite using SEM/EDX – An in vitro study

Background In recent years, the non-invasive management of non cavitated caries lesions using remineralization systems to repair the enamel have received more attention from the scientific community. Aim: To quantitatively evaluate the remineralization potential of Casein phosphopeptide-amorphous calcium phosphate-fluoride(CPP-ACPF), Tri-calcium phosphate(TCP) & Nano-hydroxyapatite(nHAP) using Scanning Electron Microscopy(SEM) and Energy dispersive X-ray Analysis(EDX). Material and Methods 40 enamel specimens were prepared, and immersed in demineralising solution at a pH of 4.4 for 96 hours at 37°C, to induce artificial carious lesions. Remineralization was carried out for a period of 30 days using CPP-ACPF, TCP, nHAP. The specimens were evaluated for calcium and phosphorus content using SEM-EDX. Results The Ca/P mass % after remineralization was significantly higher with CPP-ACP-F and TCP-F followed by nHAP. Conclusions CPP-ACP-F and TCP can promote significant remineralization of incipient carious lesions. These are excellent delivery vehicles available in a slow release amorphous form to localize calcium, phosphate and fluoride at the tooth surface. Key words:Remineralization, in vitro; CPP-ACP fluoride, Nano-hydroxyapatite, Tri-calcium phosphate, SEM/ EDX.
Board IT Competence and Firm Performance

In this study, we theorize a new construct ‘board IT competence’, and show that it is systematically related to firm performance. Using a sample of 32,856 firm-years observations over the period of the year 2000 to 2018, our study shows that board IT competence is positively associated with firm performance. Moreover, the findings suggest that firm performance is not only higher, but also more consistent across time. While many firms find it difficult to identify the right sources in developing IT competence at the board level, our study suggests that a board composition that promotes the representation of directors with relevant IT competencies can offer valuable insights to mobilize and reconfigure IT asset to create firm value.
Hospital Reliability Evaluation in Chinese Context: A Study from the Decision Theory Perspective

As many companies have transferred their businesses from online to offline or integrated modes, fake websites have become a serious threat to the property security. Situation is more complex in China—many websites, which may be legal, sometimes could cause much more serious damage to the public, including the property, health or even life. In this study, we call this kind of websites as unreliable websites. Among all of these unreliable websites, the most controversial and widely concerned ones are unreliable hospital websites. If people visit these websites, there is a high chance to be intimidated or induced to consume in the corresponding unreliable and unqualified hospitals, which often lead to mounts of property loss and delay of treatment. In this paper, we proposed features and constructed a prototype system based on the decision theory to help people identify unreliable websites and corresponding hospitals from a design science
Explaining Work Connectivity Behavior during Non-Work Time with an Extended Theory of Planned Behavior

Modern information and communication technologies (ICT) help to overcome the traditional temporal and spatial boundaries of work. However, the same ICT enable employees to engage in work-related activities during non-work time. Given the huge amount of evidence regarding the negative consequences, paired with the political will to limit this behavior, it is surprising that research on its antecedents has remained scarce. Drawing on an extended theory of planned behavior the study addresses this gap. The results indicate that intention is the main driver, even when the behavior partly occurs on a habitual level. Intention, in turn, is determined by individuals’ attitude toward the behavior, perceptions of control and subjective norms. The proposed model remains robust regardless of gender and organizational distribution of ICT. The study contributes to a growing research stream that examines work connectivity behavior during nonwork time.
Anesthesia for Percutaneous Radiofrequency Tumor Ablation (PRFA): A Review of Current Practice and Techniques

Abstract Percutaneous radiofrequency ablation (PRFA) of solid tumors is a minimally invasive procedure used to treat primary or metastatic cancer lesions via needle targeted thermal energy transfer. Some of the most common tumor lesions treated using PRFA include those within the liver, lungs and kidneys. Additionally, bone, thyroid, and breast lesions can also be treated. In most cases, this procedure is performed outside of the operating room in a specialized radiology suite. As a result, the clinician must adapt in many cases to the specific environmental issues attendant to providing anesthesia outside the operating room, including the lack of availability of an anesthesia machine in some cases, and frequently a lack of adequate scavenging and other specialized monitoring and equipment. At this time, routine practice and anesthetic prescriptions for PRFA can vary widely, ranging from patients receiving local anesthesia alone, to monitored anesthesia care, to regional anesthesia, to combined regional and general anesthesia. The choice of anesthetic technique will depend on tumor location and practitioner experience. This review aims to summarize the current state of the art in terms of anesthetic techniques for patients undergoing PRFA of solid tumors.
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Digital voice assistants, often associated with artificial intelligence in integrated applications or as a stationary stand-alone speaker, are on the rise. By integrating humanlike characteristics, they differ from conventional technologies. This qualitative study investigates the role of anthropomorphism concerning digital voice assistants and examines which humanlike characteristics are the most powerful drivers. By relying on the three-factor theory of anthropomorphism, the media equation theory and the uncanny valley paradox, we present a category system based on N=20 interviews. The results show that anthropomorphism is positively perceived if the voice assistant shows socially adapted behavior and embodies a certain role, as well as through the implementation of personality, independence and interaction, with the voice playing a decisive role. This study not only supports previous research but also contributes to the field of technology acceptance. Developers should, therefore, integrate humanlike characteristics but not a too humanlike appearance due to possible rejection.
Affordance Perceptions under Malleable Information Technology: A Social Cognitive Theory Perspective

Organizations benefit from malleable IT only if users perceive the affordances that malleable IT provides for their work. However, theoretical explanations and empirical evidence related to affordance perception are scarce. In this paper, we develop a theoretical framework based on Social Cognitive Theory to explain two different types of affordance perceptions: vicarious and autonomous. Data from a survey of 154 users supports the framework. We find that vicarious affordance perceptions depend on social information and on basic knowledge about the malleable IT. In contrast, autonomous affordance perceptions, which rely on uncertain and cognitively complex search activities, depend on self-efficacy gained through prolonged use and on the knowledge acquired through a learning process that starts with system use and observation of other people’s use, followed by vicarious affordance perceptions. The key contribution of our paper lies in developing and testing explanations for affordance perceptions under malleable IT.
Consumer-Based Ranking for Strategic Selection of IoT Business Models

The digitization of business environments requires companies to be more consumer-centric than before. In the course of these adjustments, managers operate in the area of conflict between value creation for the firm, consumers’ limited willingness to pay for products and services, and the need to gain and maintain consumers’ trust. To support managers in the challenge to redefine their business models to fit the new digitized business environment, we suggest that managers should incorporate consumer's attitudes towards Internet of Things (IoT) business models in their strategic business model choice. Based on a choice experiment with 301 individuals, we identified a set of business models ranked according to the probability that users are most likely to agree with, and thus accept. The results of the study provide direct indications about which IoT business models are from a consumer perspective desirable and which not so that managers can directly implement these insights in practice.
Environmental DNA detection and quantification of invasive red-eared sliders, Trachemy scripta elegans, in ponds and the influence of water quality

Environmental DNA (eDNA) is a powerful tool for monitoring the distribution of aquatic macro-organisms. However, environmental factors, including the water temperature and water quality, can affect the inhibition and/or degradation of eDNA, which complicates accurate estimations of eDNA concentrations and the detection of the presence/absence of species in natural habitats. Further very few eDNA studies have been conducted for reptiles, especially with respect to estimating their biomass and/or abundances. Here we examined the relationship between the visually-observed number of red-eared sliders (Trachemys scripta elegans) and eDNA concentrations across 100 ponds. Additionally, we evaluated the effect of water quality on red-eared slider eDNA concentration in these ponds. We found that there was a significant positive correlation between the observed number of red-eared sliders and the eDNA concentration in the ponds. On comparing various water quality indicators, including dissolved nitrogen, dissolved phosphorous, organic matter, and chlorophyll a (Chl. a), we found that only Chl. a had a negative correlation with the red-eared slider eDNA concentration, while we did not find any inhibition in the quantitative PCR. We conclude that concentrations of eDNA can potentially be used for estimating the abundance of the red-eared slider. Additionally, Chl. a might indirectly influence the degradation of eDNA through the microorganisms bonded to the phytoplankton in the ponds, as microbial activity is thought to decrease eDNA persistence.
Understanding B2B Buyer Behavior in Multichannel Markets: How Posted Price Channel Affect Buyers' Strategic Behavior in Auctions

While online and offline posted price channels have been well explored, research in B2B multichannel systems is still lagging behind. In this study, we investigate buyers' strategic behaviors in a unique system where an online posted price channel is introduced to the century-old Dutch auction market in a sequential way. We explore the determinants of buyers' choices and their bidding behaviors. We incorporate learning and experiences and unveil how buyers' behaviors may evolve over time. We further examine the conditions under which buyers may split their demand and utilize multichannel strategy. By analyzing an extensive dataset of over 1 million observations, our results highlight the importance of experiences, buyer's demand and product diversity in shaping key decisions. Further, we provide evidence of an emerging group of buyers that complement both the posted price and the auctions channels.
Chemical composition and roughness of enamel and composite after bleaching, acidic beverages and toothbrushing

Background In this study was assessed the surface roughness and chemical composition of tooth enamel and composite resin after bleaching treatment, immersion in acidic beverages, and simulated toothbrushing. Material and Methods One hundred and twenty dental blocks (10 x 10 x 3 mm) were randomly assigned (n = 10) according to surface treatment [none (N), bleaching (B), toothbrushing (T), and B+T] and storage medium [saliva (S), whiskey (W), and orange juice (O)]: experimental groups - N+S, N+W, N+O, B+S, B+W, B+O, S+T, W+T, O+T, B+S+T, B+W+T, and B+O+T. Two bleaching sessions were conducted using 38% hydrogen peroxide (3 applications). Surface roughness was measured using a roughness tester and composition was determined by micro energy-dispersive X-ray fluorescence spectrometry (µ-EDXRF) before and after treatments. Calcium/phosphorus (Ca/P) ratio in enamel and silica (Si) content in composite were evaluated. Data were statistically analyzed by ANOVA and Tukey’s test (α = 0.05). Results Overall, increased values of surface roughness for enamel and composite were observed mainly after immersion in orange juice and bleaching/toothbrushing association. Moreover, this association and immersion in whiskey resulted in lower Ca/P ratio and after aging methods, bleached and bleached/toothbrushed groups showed decreased in Ca/P ratio compared to initial values. All groups showed Si content decrease at the end, except the group without surface treatment and immersed in saliva, and bleaching followed by immersion in orange juice and toothbrushing caused the highest Si reduction. Conclusions Bleaching and toothbrushing combination strengthened the effects caused by acidic drinks on roughness and chemical composition of enamel and composite. Key words:Tooth bleaching, toothbrushing, physical properties, chemical properties.
Intensifying User Loyalty Through Service Gamification: Motivational Experiences and Their Impact on Hedonic and Utilitarian Value

Gamification is an approach to enhance services with affordances for game-like motivational experiences in order to increase user value. Therefore, many service providers hope that gamification will help them to maintain an active user base. However, empirical studies which examine the relationship between gamification and user loyalty are scarce. Hence, this study investigates the impact of motivational user experiences (self-development, expressive freedom, social connectedness, and social comparison) of gamified services on user loyalty mediated by perceived hedonic and utilitarian value. Findings from a field survey in the fitness context reveal that almost all examined motivational experiences are positively related to hedonic as well as utilitarian value and, subsequently, to user loyalty. Importantly, social comparison is negatively associated with utilitarian value. This highlights the need to consider the different motivational experiences of gamified services when implementing gamification affordances to promote user loyalty.
The Impact of Investors' Surprise Emotion on Post-M&A Performance: A Social Media Analytics Approach

Previous studies showed that investors drew on management perception of the synergetic potential to make better investment decisions. In the context of mergers and acquisitions (M&A), our research reveals that investors also gain insights from the “wisdom of crowds” on social media. We investigate whether investors’ surprise emotion, as mined from their social postings on Twitter, exerts a significant effect on their subsequent decision-making following M&A announcements. Empirical results demonstrate that investors’ surprise emotion has a significantly negative effect on firms’ post-M&A stock returns. Such a finding facilitates investors’ subsequent investment decision-making based on peers’ early emotional responses on social media. Furthermore, we find evidence that investors also rely on additional information to estimate the reliability of such “wisdom of crowds” through two positive moderators such as investors’ social media involvement and the relative size of M&A deal. The proposed methodology helps managers evaluate the synergetic potentials of M&A deals beforehand.
More than a need for knowledge: understanding drivers for knowledge seeking behavior in online communities

Knowledge seeking is the default activity in online communities and therefore important for their functioning. Existing research studies on why members seek knowledge overlook other factors than a simple need for knowledge, resulting in an extremely narrow body of knowledge. We propose that a need for advice can increase knowledge seeking and is further shaped by perceptions of reciprocity, self-esteem, and identification with the community. By surveying 186 respondents from 34 large online communities and applying OLS regression analyses, we find that knowledge seeking is driven by need for advice and identification, but not reciprocity. The results further show that members with high self-esteem seek less knowledge. Yet, the decision to seek knowledge depends on the level of self-esteem and this is predicted by need for advice. Our results contribute to the currently sparse body on knowledge seeking and add to the realization of necessary design attributes of online communities.