5,105 research outputs found
Study on Problems Faced by Xinjiang Organic Producers and Solutions
Presently the behavioral features of the organic producers could be concluded as the fact that they are quite confident of the prospects for organic agriculture, while heavily dependent on the guidance and support of the local governments; are in great demand for technological innovation, while in the distinguished intimacy and poor pricing capacity. Such problems as low economic benefit, the imperfect marketing network and serious external economy, are threatening the healthy development of organic agriculture in Xinjiang. In this essay, it is suggested that the government should, taking full advantage of its rich natural resources, pay great attention to the organic development in the local region; establish an efficient organic marketing network; apply the innovation mechanism as a proper compensation for the external economy; promote organic circle economy.organic agriculture, problems, policy inspiration, Xinjiang, Farm Management,
Human Cytomegalovirus Encoded miR-US25-1-5p Attenuates CD147/EMMPRIN-Mediated Early Antiviral Response.
Cellular receptor-mediated signaling pathways play critical roles during the initial immune response to Human Cytomegalovirus (HCMV) infection. However, the involvement of type-I transmembrane glycoprotein CD147/EMMPRIN (extracellular matrix metalloproteinase inducer) in the antiviral response to HCMV infection is still unknown. Here, we demonstrated the specific knockdown of CD147 significantly decreased HCMV-induced activation of NF-κB and Interferon-beta (IFN-β), which contribute to the cellular antiviral responses. Next, we confirmed that HCMV-encoded miR-US25-1-5p could target the 3 UTR (Untranslated Region) of CD147 mRNA, and thus facilitate HCMV lytic propagation at a low multiplicity of infection (MOI). The expression and secretion of Cyclophilin A (sCyPA), as a ligand for CD147 and a proinflammatory cytokine, were up-regulated in response to HCMV stimuli. Finally, we confirmed that CD147 mediated HCMV-triggered antiviral signaling via the sCyPA-CD147-ERK (extracellular regulated protein kinases)/NF-κB axis signaling pathway. These findings reveal an important HCMV mechanism for evading antiviral innate immunity through its encoded microRNA by targeting transmembrane glycoprotein CD147, and a potential cause of HCMV inflammatory disorders due to the secretion of proinflammatory cytokine CyPA
SpectralDiff: A Generative Framework for Hyperspectral Image Classification with Diffusion Models
Hyperspectral Image (HSI) classification is an important issue in remote
sensing field with extensive applications in earth science. In recent years, a
large number of deep learning-based HSI classification methods have been
proposed. However, existing methods have limited ability to handle
high-dimensional, highly redundant, and complex data, making it challenging to
capture the spectral-spatial distributions of data and relationships between
samples. To address this issue, we propose a generative framework for HSI
classification with diffusion models (SpectralDiff) that effectively mines the
distribution information of high-dimensional and highly redundant data by
iteratively denoising and explicitly constructing the data generation process,
thus better reflecting the relationships between samples. The framework
consists of a spectral-spatial diffusion module, and an attention-based
classification module. The spectral-spatial diffusion module adopts forward and
reverse spectral-spatial diffusion processes to achieve adaptive construction
of sample relationships without requiring prior knowledge of graphical
structure or neighborhood information. It captures spectral-spatial
distribution and contextual information of objects in HSI and mines
unsupervised spectral-spatial diffusion features within the reverse diffusion
process. Finally, these features are fed into the attention-based
classification module for per-pixel classification. The diffusion features can
facilitate cross-sample perception via reconstruction distribution, leading to
improved classification performance. Experiments on three public HSI datasets
demonstrate that the proposed method can achieve better performance than
state-of-the-art methods. For the sake of reproducibility, the source code of
SpectralDiff will be publicly available at
https://github.com/chenning0115/SpectralDiff
Design of Integrated Operation Process of Supply Chain Response to Market
In a supply chain in which a manufacturer is the core enterprise, the manufacturer must take much attention to the speed of its response to a dynamic market, because product life-cycle is shortening and competition is fiercer. For the manufacturer, it is a powerful method to increase its supply chain’s competence that constructing a supply chain which can respond to new market demand quickly and actively. This paper considers a whole process of supply chain response to new market demand would be from a new product R&D to delivering the final products to consumers. The process can be divided into three stages: product R&D, supply chain building, and supply chain operating. So, to increase the efficiency of response to new market demand, the manufacturer would consider how to integrate the three stages smoothly. Key words: supply chain, response time, market demand, R&D Résumé: Dans une chaîne d’offre dans laquelle un fabricant constitue l’entreprise clef, le fabricant doit prêter assez d’attention à la vitesse de sa réponse à un marché dynamique, parce que le cycle de vie du produit raccourcit alors que la compétition est de plus en plus féroce. Pour le fabricant, c’est une méthode puissante d’améliorer la compétence de sa chaîne d’offre de sorte à construire une chaîne d’offre qui est capable de répondre rapidement et activement à la demande du marché. L’article présent pense que le processus intrégral de la chaîne d’offre répondant à la nouvelle demande du marché devrait aller de R&D du produit à la délivrance du produit aux consommateurs. Ce processus peut être divisé en trois étapes : R&D du produit, établissement de la chaîne d’offre, opération de la chaîne d’offre. Ainsi, pour d’élever l’efficacité de la réponse à la nouvelle demande du marché, le fabricant pourrait considérer comment bien intégrer ces trois étapes. Mots-Clés: chaîne d’offre, temps de réponse, demande du marché, R&
How High-polluting Firms Suffer from Being Distracted form Intended Purpose:A Corporate Social Responsibility Perspective
Drag force and heavy quark potential in a rotating background
We explored the gravity dual of the rotating quark-gluon plasma by
transforming the boundary coordinates of the Schwarzschild- metric. The
Euler-Lagrange equation of the Nambu-Goto action and its solution become more
complex than those without rotation. For small angular velocity, we obtained an
analytical form of the drag force acting on a quark moving in the direction of
the rotation axis and found it stronger than that without rotation. We also
calculated the heavy quark potential under the same approximation. For the
quarkonium symmetric with respect to the rotation axis, the depth of the
potential is reduced by the rotation. For the quarkonium oriented in parallel
to the rotation axis, the bind force is weakened and the force range becomes
longer. We also compared our holographic formulation with others in the
literature.Comment: 28 pages, 3 figure
Phase structure in the baryon density-dependent quark mass model
The properties of phase diagram of strange quark matter in equilibrium with
hadronic matter at finite temperature are studied, where the quark phase and
hadron phase are treated by baryon density-dependent quark mass model and
hadron resonance gas model with hard core repulsion factor, respectively. Our
results indicate that the strangeness fraction fs, perturbation parameter C,
and confinement parameter D have strong influence on the properties of phase
diagram and the formation of strangelets, where a large fs, small C and D favor
the formation of strangelets. Consider the isentropic expansion process, we
found that the initial entropy per baryon is about 5, which gives a large
probability for the formation of strangelets. Furthermore, as the strangeness
fraction fs and one gluon-exchange interaction strength C decrease and
confinement parameter D increases, the reheating effect becomes more
significant, reducing the possibility of forming strangelets. The new phase
diagram could support a massive compact star with the maximum mass exceeding
twice the solar mass and have a significant impact on the mass-radius
relationship for hybrid stars
Hybrid Strangeon Stars
It was conjectured that the basic units of the ground state of bulk strong
matter may be strange-clusters called strangeons, and they can form self-bound
strangeon stars that are highly compact. Strangeon stars can develop a strange
quark matter (SQM) core at high densities, particularly in the
color-flavor-locking phase, yielding a branch of hybrid strangeon stars. We
explore the stellar structure and astrophysical implications of hybrid
strangeon stars. We find that hybrid strangeon stars can meet various
astrophysical constraints on pulsar masses, radii, and tidal deformabilities.
Finally, we show that the strangeon-SQM mixed phase is not preferred if the
charge-neutrality condition is imposed at the strangeon-SQM transition region.Comment: 10 pages, 4 figure
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