Graph Neural Networks for Power Allocation in Wireless Networks with Full Duplex Nodes

Due to mutual interference between users, power allocation problems in wireless networks are often non-convex and computationally challenging. Graph neural networks (GNNs) have recently emerged as a promising approach to tackling these problems and an approach that exploits the underlying topology of wireless networks. In this paper, we propose a novel graph representation method for wireless networks that include full-duplex (FD) nodes. We then design a corresponding FD Graph Neural Network (F-GNN) with the aim of allocating transmit powers to maximise the network throughput. Our results show that our F-GNN achieves state-of-art performance with significantly less computation time. Besides, F-GNN offers an excellent trade-off between performance and complexity compared to classical approaches. We further refine this trade-off by introducing a distance-based threshold for inclusion or exclusion of edges in the network. We show that an appropriately chosen threshold reduces required training time by roughly 20% with a relatively minor loss in performance

catena-Poly[[diaqua­cobalt(II)]bis­[μ-2-(4-carboxyl­atophen­yl)-4,4,5,5-tetra­methyl-4,5-dihydro-1H-imidazol-1-oxyl 3-oxide]]

In the title compound, [Co(C14H16N2O4)2(H2O)2]n, the CoII atom, lying on an inversion center, is coordinated by six O atoms in a distorted octa­hedral geometry. The CoII atoms are bridged by the nitronyl nitroxide ligands into a tape-like structure along the b axis. The tapes are further connected by O—H⋯O hydrogen bonds, forming a layer parallel to the bc plane

Major emerging and re-emerging zoonoses in China: a matter of global health and socioeconomic development for 1.3 billion

SummaryEmerging and re-emerging zoonoses are a significant public health concern and cause considerable socioeconomic problems globally. The emergence of severe acute respiratory syndrome (SARS), highly pathogenic avian influenza (HPAI) H5N1, avian influenza H7N9, and severe fever with thrombocytopenia syndrome (SFTS), and the re-emergence of rabies, brucellosis, and other zoonoses have had a significant effect on the national economy and public health in China, and have affected other countries. Contributing factors that continue to affect emerging and re-emerging zoonoses in China include social and environmental factors and microbial evolution, such as population growth, urbanization, deforestation, livestock production, food safety, climate change, and pathogen mutation. The Chinese government has devised new strategies and has taken measures to deal with the challenges of these diseases, including the issuing of laws and regulations, establishment of disease reporting systems, implementation of special projects for major infectious diseases, interdisciplinary and international cooperation, exotic disease surveillance, and health education. These strategies and measures can serve as models for the surveillance and response to continuing threats from emerging and re-emerging zoonoses in other countries

Harmony in diversity:Can One Belt One Road initiative promote China’s OFDI?

This paper investigates the effect of the One Belt One Road (OBOR) initiative on China’s outward foreign direct investment (OFDI) using a dataset of all host countries for the period of 2010–2015. The employed econometric technique combines a difference-in-differences estimator with matching techniques. The results show that China’s OFDI in OBOR countries is about 40% higher than in non-OBOR countries. After the initiative, the OFDI from China increases by 46.2% in OBOR countries. However, after controlling for the heterogeneity across OBOR and non-OBOR countries using the matching approach, the significance of the increasing effect caused by the OBOR initiative disappears. We also find the OBOR initiative diminishes the resource-seeking motivation and improves the market-seeking motivation of China’s OFDI. Our results cast doubts on the infrastructure-led and institution-based strategy of the OBOR initiative, but support the boosting effect of the OBOR initiative on institutional cooperation and cultural convergence. Thus, the OBOR initiative is a sustainable continuation and development of the long tradition of economic, institutional, and cultural convergence with the OBOR countries, rather than a temporary policy shock

Mecanismos fisiológicos y bioquímicos comparativos de tolerancia a la sequía en tres cultivares contrastantes de quinua (Chenopodium quinoa)

Quinoa (Chenopodium quinoa Willd.) is a halophytic, pseudocereal crop, which has a richer nutritional value than other major cereals and is highly resistant to multiple abiotic stresses. In this study, the germination characteristics, morphological, physiological and biochemical changes of three contrasting quinoa cultivars under drought stress were compared. The results indicated that ‘Chaidamuhong’ and ‘Gongzha No.3’ showed stronger drought tolerance than ‘Qingli No.1’. This was mainly manifest in seed germination index, activity of antioxidant enzymes, cell membrane damage and morphological changes. We speculate that the increase in the activity of many antioxidant enzymes and the lower stomatal density make ‘Chaidamuhong’ and ‘Gongzha No.3’ superior in release of reactive oxygen species and water retention than ‘Qingli No.1’, thus reducing the degree of cell damage, and improving drought resistance.La quinua (Chenopodium quinoa Willd.) es un cultivo de pseudocereal halófilo, que tiene un valor nutricional más rico que el de otros cereales importantes y es altamente resistente a múltiples estreses abióticos. En este estudio, se compararon características de germinación, cambios morfológicos, fisiológicos y bioquímicos de tres cultivares de contrastantes quinua bajo estrés por sequía. Los resultados indicaron que ‘Chaidamuhong’ y ‘Gongzha No.3’ mostraron una mayor tolerancia a la sequía que ‘Qingli No.1’. Esto se manifestó principalmente en el índice de germinación de las semillas, la actividad de las enzimas antioxidantes, el daño de la membrana celular y los cambios morfológicos. Especulamos que el aumento en la actividad de muchas enzimas antioxidantes y la menor densidad estomática hacen que ‘Chaidamuhong’ y ‘Gongzha No.3’ sean superiores en la liberación de especies reactivas de oxígeno y la retención de agua que ‘Qingli No.1’, reduciendo así el grado de daño celular y mejorando la resistencia a la sequía