The advent of internet shopping brings countless options for consumers. In response, online retailers aim to facilitate search by attaching descriptive terms to their inventory (e.g., product genres ...or categories). Called “tagging,” such a practice has been shown to increase product visibility/exposure in an otherwise limitless sea of options. Across five distinct platforms covering a gamut of consumer domains (i.e., food recipes, mobile games, books, videos, and journal publications), we find that the benefits of tagging for product visibility/exposure come with unexpected costs. Indeed, though assigning more tags to a product does indeed boost its visibility/exposure online, doing so also hurts said product’s perceived quality. This effect emerges regardless of proxies used to quantify (i) visibility/exposure or (ii) product liking. We draw on categorization and learning research to explain these results. While multi-tagging increases the likelihood of a product to appear in consumers’ search, it also increases the likelihood of a mismatch between what consumers really sought and what said product can actually deliver.
We will tackle a conjecture of S. Seo and A. J. Yee, which says that the series expansion of 1/(q,−q3;q4)∞ has nonnegative coefficients. Our approach relies on an approximation of the generally ...nonmodular infinite product 1/(qa;qM)∞, where M is a positive integer and a is any of 1,2,…,M.
Destination branding and digital diplomacy, as two driving forces for the tourism industry, can capitalize on branding strategies and marketing instruments from commercial practice. Although existing ...research has explored ways this should include search engine optimization (SEO) tools and analyses, implementation has been limited so far. Currently, daily queries and results in global search engines have a major impact on international perceptions of countries and the formation of public opinions in the context of the tourism industry and country relations. SEO tools not only create new challenges and possibilities for data analysis for related scientific disciplines, but also offer great benefits for political, cultural, and educational institutions and decision-makers in destination branding and tourism. It is crucial for these entities to carefully evaluate and strategically employ websites and web content to rank better in search engine results. This study closes a gap in applied research by critically examining common approaches to search engine analysis for tourism purposes, especially those based on Google Trends data. This includes introducing previously neglected SEO analysis methods, along with cases regarding their applications. The study concludes by discussing the limitations of search engine resources and their potential for future research and use in destination branding and digital diplomacy in the tourism context.
In today’s digital media environment, search engines constitute a significant gateway to news and an important source of traffic for online news outlets worldwide, identifying the significance of top ...rankings in search results. In this context, search engine optimization (SEO) has entered newsrooms as an essential element of disseminating the content of online media organizations, creating new practices and challenges for media professionals. However, the transition to the Semantic Web (SW) and the development of major search engines in recent years have led to the emergence of Semantic SEO as a new approach to old SEO practices, creating at the same time new challenges for the news media industry. This study investigates the application of Semantic SEO inside newsrooms and its impact on journalism and news media organizations. Drawing upon a series of semi-structured interviews with Greek SEO experts and a systematic review of the notion of semantic search and the corresponding semantic SEO technologies, the objective of this work is to present an analysis of how Semantic SEO affects news media and journalism content as well as to identify some of the technological practices that could contribute to enhancing the discoverability of news content in the changing context of online search.
The previously unknown compound Rb3(H1.5PO4)2 is successfully synthesized here using a newly developed variant of aqueous precipitation crystal growth. The approach exploits the phenomenon of boiling ...point elevation in concentrated solutions. Crystals of the title compound were obtained upon heating a stoichiometric solution from 110 to 150 °C under a high steam partial pressure of 0.83 atm. Single crystal X-ray diffraction studies revealed Rb3(H1.5PO4)2 crystallizes in space group C2/m and is isostructural to Cs3(H1.5PO4)2. As evidenced by thermal analysis, Rb3(H1.5PO4)2 does not undergo a phase transition to a trigonal superprotonic phase upon heating. Even under a steam partial pressure of 0.82 atm, under which dehydration is suppressed to a temperature of 263 °C, no polymorphic transition is detected. The behavior parallels that of Cs3(H1.5PO4)2 and contrasts that of several structurally and chemically similar selenate compounds. The crystal growth approach developed here may prove particularly useful for obtaining water soluble compounds which are thermodynamically or kinetically disfavored at temperatures close to ambient.
Hypothetical phase diagram for humidity-controlled precipitation and crystal growth of Rb3(H1.5PO4)2. Display omitted
•Single crystals of Rb3(H1.5PO4)2 are synthesized by a variant of aqueous precipitation crystal growth.•Crystal growth method may prove useful for obtaining water soluble compounds that are disfavored near ambient conditions.•Rb3(H1.5PO4)2 adopts the C2/m space group nearly isostructural to Cs3(H1.5PO4)2 and other M3Hn(XO4)2 solid acids.•No transition to a trigonal, superprotonic phase is observed.
The ambiguous mechanism that selenite seems to be absorbed by roots via phosphorus (P) and silicon (Si) transporters signifies P and Si may affect selenite uptake. However, the role of P and Si in ...phloem-mediated selenium (Se) transport within plant tissue is unknown. Therefore, in this work, tomato (
Solanum lycopersicum
L.) seedlings were exposed to selenite under different hydroponic conditions firstly. And then, split-root experiments were conducted. Results showed that Se uptake decreased as external pH increased. At pH 8, more selenite in the form of SeO
3
2−
was assimilated under P-deficient conditions than under P-normal conditions. Silicate inhibited Se uptake only at pH 3 (27.5% H
2
SeO
3
+72.5% HSeO
3
−
). The results of split-root experiments showed that Se concentrations in seedlings increased under heterogeneously high P or Si. Selenium transport from shoots to roots immersed in solution without selenite was also enhanced. This study illustrated that the affinity of tomato roots to assimilate selenite species followed the order of H
2
SeO
3
>HSeO
3
−
>SeO
3
2−
. H
2
SeO
3
was absorbed into roots via Si transporters, whereas HSeO
3
−
and a portion of SeO
3
2−
were absorbed via low- and high-affinity P transporters, respectively. In addition, heterogeneously high P or Si concentrations in environmental media could enhance phloem-mediated Se redistribution.
A visible light photoreductive dearomatizative alkylation of N‐alkyl pyridinium salts for producing 4‐alkyl‐1,4‐dihydropyridines is described. The reaction harnesses N‐alkyl pyridinium salts both as ...the alkyl radical precursors to initiate the reaction and as the 1,4‐dihydropyridin‐4‐yl‐based alkylating reagents to terminate the reaction. In contrast to the reported electroreductive procedure via the key dihydropyridine radical intermediates, mechanistic studies demonstrate that this photoreductive dearomatizative alkylation proceeds via directly alkyl radical addition across the pyridinium ring followed by single electron oxidant (SEO) and dearomatization.
A new visible light photoreductive dearomatizative alkylation of N‐alkyl pyridinium salts for producing 4‐alkyl‐1,4‐dihydropyridines by harnessing N‐alkyl pyridinium salts both as the alkyl radical precursors to initiate the reaction and as the 1,4‐dihydropyridin‐4‐yl‐based alkylating reagents to terminate the reaction is developed. Mechanistic studies demonstrate that this reaction proceeds via directly alkyl radical addition across the pyridinium ring followed by single electron oxidant and dearomatization.
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•Novel SeO2/ZnO nanoparticles were prepared by sonication-assisted sol–gel method.•The highest efficiency was obtained with 1% SeO2/ZnO.•Photocatalysts successfully formed radicals by ...benzoic acid and PPh3 scavengers.•−1% SeO2/ZnO was also stabile in the 3rd cycle in the repeatability experiment.
SeO2/ZnO (1, 3, 5%) nanopowders were synthesized by a sonication-assisted sol–gel method for the first time. They were characterized by spectroscopic, morphological, and microscopic measurements. To determine the photocatalytic activity of these nanoparticles, methylene blue (MB) was used as the model pollutant under solar light. The capacity of these novel nanopowders to form hydroxyl and superoxide radicals has been demonstrated by using scavengers such as benzoic acid and triphenylphosphine, respectively. The capture experiments were also supported by some spectroscopic analyzes. It was seen that superoxide radical species played an important role. For the dye degradation, 1% SeO2/ZnO among nano samples showed the best photocatalytic performance, achieving approximately 94% decrease after 90 min of UV–visible light irradiation. The reusability of 1% SeO2/ZnO catalyst with the best photocatalytic activity was tested five times. The new catalyst was found to be quite stable without reducing the efficiency.
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•An efficient one-pot synthesis of heterocyclic indanones was developed.•The one-pot route included three-step tandem Riley oxidation/Friedel-Crafts reaction/oxidation.•The reactions ...proceeded with SeO2/FeCl3 in moderate yields.•A short and efficient total synthesis of Wrightiadione was described.•The synthesized indanones compounds have shown potent anticancer activities.
Indanones have been shown to exhibit a broad range of biological activities. An efficient and straightforward synthetic method for generating indanone fused heterocyclic compounds which contains a unique tetracyclic isoflavone moiety was developed. This unprecedented one-pot route utilizes a wide spread of substrates through three-step tandem Riley oxidation/Friedel-Crafts reaction/oxidation with SeO2/FeCl3 in moderate yield. Moreover, some of the synthesized heterocyclic compounds have shown moderate anticancer activities.
Do institutional investors possess private information about seasoned equity offerings (SEOs)? If so, do they use this private information to trade in a direction opposite to this information (a ...manipulative trading role) or in the same direction (an information production role)? We use a large sample of transaction-level institutional trading data to distinguish between these two roles of institutional investors. We explicitly identify institutional SEO allocations for the first time in the literature. We analyze the consequences of the private information possessed by institutional investors for SEO share allocation, institutional trading before and after the SEO and realized trading profitability, and the SEO discount. We find that institutions are able to identify and obtain more allocations in SEOs with better long-run stock returns, they trade in the same direction as their private information, and their post-SEO trading significantly outperforms a naive buy-and-hold trading strategy. Further, more pre-offer institutional net buying and larger institutional SEO allocations are associated with a smaller SEO discount. Overall, our results are consistent with institutions possessing private information about SEOs and with an information production instead of a manipulative trading role for institutional investors in SEOs.
