263 research outputs found
Research on the Design of Museum Cultural and Creative Products under the background of new cultural and Creative culture
This paper discusses the design of museum cultural and creative products under the background of new cultural and creative culture. Through the interpretation of related concepts of new cultural and creative products, from the aspects of its content and products combined with the current development of museum cultural and creative products, summed up the design principles of museum cultural and creative products. While interpreting the relevant design principles, this paper designs cultural and creative products by combining the cultural relics collected by several museums in Hubei Province, and provides feasible and constructive ideas and methods for the design of cultural and creative products in museums by combining theory with practice
FedSelect: Customized Selection of Parameters for Fine-Tuning during Personalized Federated Learning
Recent advancements in federated learning (FL) seek to increase client-level
performance by fine-tuning client parameters on local data or personalizing
architectures for the local task. Existing methods for such personalization
either prune a global model or fine-tune a global model on a local client
distribution. However, these existing methods either personalize at the expense
of retaining important global knowledge, or predetermine network layers for
fine-tuning, resulting in suboptimal storage of global knowledge within client
models. Enlightened by the lottery ticket hypothesis, we first introduce a
hypothesis for finding optimal client subnetworks to locally fine-tune while
leaving the rest of the parameters frozen. We then propose a novel FL
framework, FedSelect, using this procedure that directly personalizes both
client subnetwork structure and parameters, via the simultaneous discovery of
optimal parameters for personalization and the rest of parameters for global
aggregation during training. We show that this method achieves promising
results on CIFAR-10.Comment: We are still expanding this wor
Probing phase transition in neutron stars via the crust-core interfacial mode
Gravitational waves emitted from the binary neutron star (BNS) systems can
carry information about the dense matter phase in these compact stars. The
crust-core interfacial mode is an oscillation mode in a neutron star and it
depends mostly on the equation of the state of the matter in the crust-core
transition region. This mode can be resonantly excited by the tidal field of an
inspiraling-in BNS system, thereby affecting the emitted gravitational waves,
and hence could be used to probe the equation of state in the crust-core
transition region. In this work, we investigate in detail how the first-order
phase transition inside the neutron star affects the properties of the
crust-core interfacial mode, using a Newtonian fluid perturbation theory on a
general relativistic background solution of the stellar structure. Two possible
types of phase transitions are considered: (1) the phase transitions happen in
the fluid core but near the crust-core interface, which results in density
discontinuities; and (2) the strong interaction phase transitions in the dense
core (as in the conventional hybrid star case). These phase transitions'
impacts on interfacial mode properties are discussed. In particular, the former
phase transition has a minor effect on the M-R relation and the adiabatic tidal
deformability, but can significantly affect the interfacial mode frequency and
thereby could be probed using gravitational waves. For the BNS systems, we
discuss the possible observational signatures of these phase transitions in the
gravitational waveforms and their detectability. Our work enriches the
exploration of the physical properties of the crust-core interfacial mode and
provides a promising method for probing the phase transition using the
seismology of a compact star.Comment: 18 pages, 14 figure
Surgical outcome of hepatocellular carcinoma patients with biliary tumor thrombi
<p>Abstract</p> <p>Background</p> <p>To investigate the surgical outcome of hepatocellular carcinoma (HCC) patients with biliary tumor thrombi (BTT).</p> <p>Methods</p> <p>Surgical outcome of 27 HCC patients with BTT (group I) were compared with randomly selected HCC patients without BTT (group II; n = 270).</p> <p>Results</p> <p>One patient in group I died of hepatic failure within 30 days after resection. The 1-, 3- and 5-year cumulative survival rates of group I were 70.3%, 25.9%, and 7.4%, respectively; these were significantly lower than those of group II (90.6%, 54.0%, and 37.7%) (<it>P <</it>0.001). The rates of early recurrence (≤ 1 year) after resection were significantly higher in group I than group II (70.3% vs. 34.8%) (<it>P </it>< 0.001).</p> <p>Conclusion</p> <p>HCC patients with BTT had a worse prognosis after resection than those without BTT. Resection should be considered for these tumors given the lack of effective alternative therapies.</p
Non-Markovian Dynamics of Entanglement for Multipartite Systems
Entanglement dynamics for a couple of two-level atoms interacting with
independent structured reservoirs is studied using a non-perturbative approach.
It is shown that the revival of atom entanglement is not necessarily
accompanied by the sudden death of reservoir entanglement, and vice versa. In
fact, atom entanglement can revive before, simultaneously or even after the
disentanglement of reservoirs. Using a novel method based on the population
analysis for the excited atomic state, we present the quantitative criteria for
the revival and death phenomena. For giving a more physically intuitive
insight, the quasimode Hamiltonian method is applied. Our quantitative analysis
is helpful for the practical engineering of entanglement.Comment: 10 pages and 4 figure
Repeat hepatectomy for recurrent hepatocellular carcinoma: a local experience and a systematic review
Background: This study aimed to assess the efficacy and safety of repeat hepatectomy for recurrent hepatocellular carcinoma (HCC). Methods: Thirty-seven patients who underwent a curative repeat hepatectomy in our hospital were retrospectively studied. An extensive database literature search was performed to obtain for all relevant studies. Results: In our series, there were no perioperative deaths during repeat hepatectomy for recurrent HCC. Patients survival after repeat hepatectomy were similar to 429 patients undergoing initial hepatectomy. A computerized search of the Medline and PubMed databases found 29 retrospective studies providing relevant data in 1149 patients were included for appraisal and data extraction. After the repeat hepatectomy, postoperative morbidity ranged from 6.2% to 68.2% with a median per cohort of 23.5 per cent. There were 7 perioperative deaths (0.7 per cent of 993 for whom mortality data were provided). The overall median survival ranged from 21 to 61.5 months, with 1 -, 3 -, and 5-year survival of 69.0% to 100%, 21.0% to 87.0%, and 25.0% to 87.0%, respectively. Conclusions: Repeat hepatectomy can be performed safely and is associated with long-term survival in a subset of patients with recurrent HCC. However, the findings have to be carefully interpreted due to the lower level of evidence. A randomized controlled study is needed to compare repeat hepatectomy and other modalities for recurrent HCC
Effects of Cutting Intensity on Soil Physical and Chemical Properties in a Mixed Natural Forest in Southeastern China
The mixed Chinese fir (Cunninghamia lanceolata (Lamb.) Hook.), Masson’s pine (Pinus massoniana Lamb.), and hardwood forest is a major forest type in China and of national and international importance in terms of its provision of both timber and ecosystem services. However, over-harvesting has threatened its long-term productivity and sustainability. We examined the impacts of timber harvesting intensity on soil physical and chemical properties 10 and 15 years after cutting using the research plots established with a randomized block design. We considered five treatments, including clear cutting and low (13.0% removal of growing stock volume), medium (29.1%), high (45.8%), and extra-high (67.1) intensities of selective cutting with non-cutting as the control. The impact on overall soil properties derived from principal component analysis showed increasing with a rise in cutting intensity, and the most critical impact was on soil nutrients, P and K in particular. Soil nutrient loss associated with timber harvesting even at a low cutting intensity could lead to nutrient deficits in this forest although most of the soil physical properties could be recovered under the low and medium intensities of cutting. These results indicate that clear cutting and the selective cutting of extra-high and high intensities should be avoided in this type of forest in the region
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