Graph Neural Collaborative Topic Model for Citation Recommendation

Due to the overload of published scientific articles, citation recommendation has long been a critical research problem for automatically recommending the most relevant citations of given articles. Relational topic models (RTMs) have shown promise on citation prediction via joint modeling of document contents and citations. However, existing RTMs can only capture pairwise or direct (first-order) citation relationships among documents. The indirect (high-order) citation links have been explored in graph neural network–based methods, but these methods suffer from the well-known explainability problem. In this article, we propose a model called Graph Neural Collaborative Topic Model that takes advantage of both relational topic models and graph neural networks to capture high-order citation relationships and to have higher explainability due to the latent topic semantic structure. Experiments on three real-world citation datasets show that our model outperforms several competitive baseline methods on citation recommendation. In addition, we show that our approach can learn better topics than the existing approaches. The recommendation results can be well explained by the underlying topics.

Human Rights and Socio-Environmental Conflicts of Mining in Mexico: A Systematic Review

Socio-environmental conflicts are situations that exemplify human rights transgressions caused by extractive activities. These are present in developing countries where extractivism, imperialism, and colonialism paradigms prevail. In the context of Mexico, criminalization, violence, and the absence of rule of law promote these conflicts, frequently aggravated by involvement with private interests. In the last 20 years, the relationship between human rights in the mining sector and its impact on the environment has been a critical research subject. This paper aims to carry out a systematic review to analyze human rights transgressions related to the mining industry’s impact in Mexico, and identify factors causing socio-environmental conflicts. The current study shows a systematic analysis based on the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) methodology. This method contributed to the collection of references that describe conflicts due to human rights transgressions and environmental damage in mining areas in Mexico. Human rights transgressions caused by mining in a Mexican context demonstrate the inability of the state to stop the increase in socio-environmental conflicts and its lack of concern towards preventing damage to the environment.

Preparation of Gentamicin Sulfate Nanoparticles using Eudragit RS-100 and Evaluation of Their Physicochemical Properties

Improving permeability and absorption of drugs are critical research challenges in pharmaceutical science. Gentamicin sulfate is an aminoglycoside antibiotic, which is very active against gram-negative bacteria; however, it has very poor bioavailability. This study aimed to prepare gentamicin nanoparticles with the intention of increased bioavailability. Accordingly, Eudragit RS-100 nanoparticles loaded with gentamicin sulfate were prepared by the double emulsification and solvent evaporation method, a proper technique for encapsulating hydrophilic molecules. Nanoparticles’ suspensions with polymer to drug ratios of 1:1 ([Formula: see text] and 2:1 ([Formula: see text]) were prepared, lyophilized and evaluated for their production yield, physicochemical properties and morphology. The mean particle size was 195.67[Formula: see text]nm and 228[Formula: see text]nm for [Formula: see text] and [Formula: see text], respectively. The formulations’ loading efficiencies were relatively high (85.73 for [Formula: see text] and 85.20 for [Formula: see text]). The nanoparticles’ surface charge (+40.5[Formula: see text]mV) was sufficient to inhibit their aggregation and facilitate the nanoparticles’ absorption through the gastrointestinal tract. The results of differential scanning calorimetry (DSC) and Fourier transform infrared spectroscopy (FT-IR) revealed that drug and polymer stabilized each other by physical interactions between their functional groups. Both formulations presented an initial burst drug release of nearly 20% after 30[Formula: see text]min in phosphate buffer (pH = 7.4). After 24[Formula: see text]h, [Formula: see text] did not release the drug completely, while [Formula: see text] released the whole drug. Overall, nanoparticles with proper characteristics were obtained. This study puts forward the necessity of conducting further research in order to explore the intestinal absorption of these nanoparticles and the possibility of being utilized for oral administration of gentamicin sulfate.

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On Politics in Comparative and International Higher Education

This paper draws attention to key conundrums facing researchers of comparative and international higher education in the age of post-truth and resurgent authoritarianism. The analysis focuses on three salient concerns: world class-universities and academic freedom; power brokerage in the internationalisation of higher education; and challenges of intellectual leadership – that dominated research agendas in the field. Situated at the crossroads of major arguments in the literature and observations derived from academic praxis in the three areas, the critique sets out to explain how politics have been gaining more weight in the construct of comparative and international higher education at a time when corporate elitism is on the rise and the freedoms of inquiry and communication are declining. The study warns about the failures of integrity in this context, and manifests imperatives for safeguarding academic freedom and critical research in the field.

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Can Post-Vaccine ‘Vaxication’ Rejuvenate Global Tourism? Nexus between COVID-19 Branded Destination Safety, Travel Shaming, Incentives and the Rise of Vaxication Travel

Vaxication (i.e., post-vaccination travel) and branding destinations for COVID-19 safety have emerged as the cornerstones to fully rebound global tourism. Numerous destination brands are now stimulating tourism demand through realigned travel incentives specifically for fully vaccinated travelers. However, there is growing fear and incidents of travel shaming across destinations, especially due to the recent outbreaks of the highly contagious COVID-19 ‘delta and omicron’ variants. Addressing this critical research gap, the present study makes pioneering efforts to empirically examine the effects of COVID-19 branded destination safety (CBDS) on vaxication intentions, under the moderating influence of travel shaming and travel incentives. Drawing on study data from 560 fully-vaccinated residents from Hawaii, United States and structural equation modeling (SEM) with Mplus, the evidence suggests that the positive impact of CBDS on vaxication intention can be further strengthened by travel incentives, or weakened when travel shaming picks up more momentum. Besides the validation of newly developed scales, the study offers strategic insights based on dominant theories (e.g., theory of planned behavior and protection motivation theory) to interpret the changing tourism demand, and to transform the emerging challenges into opportunities through and beyond the pandemic.

Chinese Text in a Poem by N. Gumilyov

The article considers N. Gumilevs poem The Moon at Sea from the cycle Porcelain Pavilion. New in the work is the interpretation of the poem, the identification and explanation of the Chinese realities of N. Gumilevs poetic text. Revealed the original texts, which became the basis for the creation of N. Gumilevs poem The Moon on the Sea, considered a version of the poem, preserved in the poets manuscript. The authors reasoning and conclusions are based on critical research, which compares two cultures. The analysis of N. Gumilevs poem is carried out in the semantic aspect using the search for textual parallels. Interpretation of N. Gumilevs poem The Moon on the Sea allows, on the other hand, to approach the world outlook of the Silver Age culture, explains the genesis of the image of China in N. Gumilevs poetry.