7,783 research outputs found
MB-TaylorFormer: Multi-branch Efficient Transformer Expanded by Taylor Formula for Image Dehazing
No full textIn recent years, Transformer networks are beginning to replace pure
convolutional neural networks (CNNs) in the field of computer vision due to
their global receptive field and adaptability to input. However, the quadratic
computational complexity of softmax-attention limits the wide application in
image dehazing task, especially for high-resolution images. To address this
issue, we propose a new Transformer variant, which applies the Taylor expansion
to approximate the softmax-attention and achieves linear computational
complexity. A multi-scale attention refinement module is proposed as a
complement to correct the error of the Taylor expansion. Furthermore, we
introduce a multi-branch architecture with multi-scale patch embedding to the
proposed Transformer, which embeds features by overlapping deformable
convolution of different scales. The design of multi-scale patch embedding is
based on three key ideas: 1) various sizes of the receptive field; 2)
multi-level semantic information; 3) flexible shapes of the receptive field.
Our model, named Multi-branch Transformer expanded by Taylor formula
(MB-TaylorFormer), can embed coarse to fine features more flexibly at the patch
embedding stage and capture long-distance pixel interactions with limited
computational cost. Experimental results on several dehazing benchmarks show
that MB-TaylorFormer achieves state-of-the-art (SOTA) performance with a light
computational burden. The source code and pre-trained models are available at
https://github.com/FVL2020/ICCV-2023-MB-TaylorFormer.Comment: ICCV 202
MB-TaylorFormer: Multi-branch Efficient Transformer Expanded by Taylor Formula for Image Dehazing
No full textIn recent years, Transformer networks are beginning to replace pure convolutional neural networks (CNNs) in the field of computer vision due to their global receptive field and adaptability to input. However, the quadratic computational complexity of softmax-attention limits the wide application in image dehazing task, especially for high-resolution images. To address this issue, we propose a new Transformer variant, which applies the Taylor expansion to approximate the softmax-attention and achieves linear computational complexity. A multi-scale attention refinement module is proposed as a complement to correct the error of the Taylor expansion. Furthermore, we introduce a multi-branch architecture with multi-scale patch embedding to the proposed Transformer, which embeds features by overlapping deformable convolution of different scales. The design of multi-scale patch embedding is based on three key ideas: 1) various sizes of the receptive field; 2) multi-level semantic information; 3) flexible shapes of the receptive field. Our model, named Multi-branch Transformer expanded by Taylor formula (MB-TaylorFormer), can em-bed coarse to fine features more flexibly at the patch embedding stage and capture long-distance pixel interactions with limited computational cost. Experimental results on several dehazing benchmarks show that MB-TaylorFormer achieves state-of-the-art (SOTA) performance with a light computational burden. The source code and pre-trained models are available at https://github.com/FVL2020/ICCV-2023-MB-TaylorFormer.</p
Emerging opportunities, challenges and constraints in the Chinese food industry
No full textChina is the world’s fourth largest country by total land area behind Russia, Canada and the USA. However, given the phenomenon of growing urbanization, the pressure on food demand for an increasing population as well as changing diet, China has had progressively to resort to imports, becoming a net importer of food. This scenario is set to continue and could result in a future Malthusian scenario. Resourcefulness, technology, research and modernization are factors on which China can improve, as they will have a key role in determining the ability of China, and also of the world, to feed their respective populations in the future. Improved efficiency and productivity, reform of land use rights, but also the policy of "going out" and “land grabbing” are some of the plausible strategies that the country could improve on to avoid an inexorable stabilization or, at worst, a decline in domestic production, as well as taking into account the impact of climate change on agricultural commodities.
Starting from these premises, this study, based on three core areas (food production, consumption and trade), aims to analyze the current situation, identifying opportunities, challenges and constraints that could prevent the development of the Chinese food industry. Initially, the Chapter provides an analysis of the context in which Chinese food companies evolve, analyzing supply (with a focus on the main food and beverages companies), and consumption and trade trends. Then, the main policies involving the food sector are analyzed. The obstacles that could affect the sustainable development of the Chinese food industry are included, focusing on increased urbanization, climate change threats and conflicts for limited natural resources (particularly land and water). A summary of the findings of this study and some recommendations for the Chinese food industry conclude the Chapter
Tocotrienols Modulate Breast Cancer Secretomes and Affect Cancer-Signaling Pathways in MDA-MB-231 Cells: A Label-Free Quantitative Proteomic Analysis
No full textTocotrienols (T3), a family of vitamin E, are reported to possess potent anti-cancer effects but the molecular mechanisms behind these effects still remain unclear. The aim of this study was to investigate how T3 exert anti-cancer effects on MDA-MB-231 human breast cancer cells. The MDA-MB-231 cells were chosen for this study as they are triple-negative and highly metastatic cells, which form aggressive tumors in experimental models. The MDA-MB-231 cells were treated with varying concentrations (0–20 µg mL−1) of gamma (γ) or delta (δ) T3 and the secretome profiles of these cells treated with half maximal inhibitory concentration (IC50) of γT3 (5.8 µg mL−1) or δT3 (4.0 µg mL−1) were determined using label-free quantitative proteomic strategy. A total of 103, 174 and 141 proteins were identified with ProteinLynx Global Server (PLGS) score of more than 200 and above 25% sequence coverage in the untreated control and T3-treated cell culture supernatant respectively. A total of 18 proteins were dysregulated between untreated control and T3 (δT3 or γT3) treated conditions. The results showed that T3 treatment downregulated the exogenous Cathepsin D and Serpine1 proteins but upregulated Profilin-1 protein, which play a key role in breast cancer in the MDA-MB-231 cells. These findings strongly suggest that T3 may induce differential expression of secreted proteins involved in the cytoskeletal regulation of RHO GTPase signaling pathway. © 2019, © 2019 Taylor & Francis Group, LLC
Harmful algal blooms in the PICES region of the North Pacific
No full textForewordBackground and objectives [pdf, 0.84 MB] Country reviews and status reports Section I. Western North Pacific Japan Yasuwo Fukuyo, Ichiro Imai, Masaaki Kodama and Kyoichi TamaiRed tides and harmful algal blooms in Japan [pdf, 0.7 MB]People's Republic of China Tian Yan, Ming-Jiang Zhou and Jing-Zhong ZouA national report of HABs in China [pdf, 0.24 MB]Republic of Korea Sam Geun Lee, Hak Gyoon Kim, Eon Seob Cho and Chang Kyu LeeHarmful algal blooms (red tides): Management and mitigation in Korea [pdf, 0.27 MB]Russia Tatiana Y. Orlova, Galina V. Konovalova, Inna V. Stonik, Tatiana V. Morozova and Olga G. ShevchenkoHarmful algal blooms on the eastern coast of Russia [pdf, 1.4 MB]Section II. Eastern North Pacific Canada F.J.R. "Max" Taylor and Paul J. HarrisonHarmful marine algal blooms in western Canada [pdf, 0.87 MB]United States of America Vera L. TrainerHarmful algal blooms on the U.S. west coast [pdf, 0.5 MB]Mexico Jose L. Ochoa, S. Lluch-Cota, B.O. Arredondo-Vega, E. Nuñes-Vázquez, A. Heredia-Tapia, J. Pérez-Linares and R. Alonso-RodriguezMarine Biotoxins and harmful algal blooms in Mexico's Pacific littora [pdf, 0.2 MB]Summary and conclusions [pdf, 0.6 MB] AppendicesA. Members of the Working Group [pdf, 0.1 MB]B. Original terms of reference (Vladivostok, 1999) [pdf, 0.08 MB]C. Annual reports of WG 15 [pdf, 0.15 MB]D. Workshop report on taxonomy and identification of HAB species and data management [pdf, 0.15 MB](Document pdf contains 156 pages)ISSN: 1198-273
Harmful algal blooms in the PICES region of the North Pacific
No full textForeword
Background and objectives [pdf, 0.84 MB]
Country reviews and status reports
Section I. Western North Pacific
Japan
Yasuwo Fukuyo, Ichiro Imai, Masaaki Kodama and Kyoichi Tamai
Red tides and harmful algal blooms in Japan [pdf, 0.7 MB]
People's Republic of China
Tian Yan, Ming-Jiang Zhou and Jing-Zhong Zou
A national report of HABs in China [pdf, 0.24 MB]
Republic of Korea
Sam Geun Lee, Hak Gyoon Kim, Eon Seob Cho and Chang Kyu Lee
Harmful algal blooms (red tides): Management and mitigation in Korea [pdf, 0.27 MB]
Russia
Tatiana Y. Orlova, Galina V. Konovalova, Inna V. Stonik, Tatiana V. Morozova and Olga G. Shevchenko
Harmful algal blooms on the eastern coast of Russia [pdf, 1.4 MB]
Section II. Eastern North Pacific
Canada
F.J.R. "Max" Taylor and Paul J. Harrison
Harmful marine algal blooms in western Canada [pdf, 0.87 MB]
United States of America
Vera L. Trainer
Harmful algal blooms on the U.S. west coast [pdf, 0.5 MB]
Mexico
Jose L. Ochoa, S. Lluch-Cota, B.O. Arredondo-Vega, E. Nuñes-Vázquez, A. Heredia-Tapia, J. Pérez-Linares and R. Alonso-Rodriguez
Marine Biotoxins and harmful algal blooms in Mexico's Pacific littora [pdf, 0.2 MB]
Summary and conclusions [pdf, 0.6 MB]
Appendices
A. Members of the Working Group [pdf, 0.1 MB]
B. Original terms of reference (Vladivostok, 1999) [pdf, 0.08 MB]
C. Annual reports of WG 15 [pdf, 0.15 MB]
D. Workshop report on taxonomy and identification of HAB species and data management [pdf, 0.15 MB]
(Document pdf contains 156 pages
Troponin I and Creatine Kinase MB do not provide comparable information after PCI
No full textObjectives. To compare cardiac troponin I (cTnI) and creatine kinase-MB (CK-MB) after PCI in cases with normal baseline levels of both biomarkers. Design. cTnI and CK-MB after PCI were stratified as multiples of the 99 three times 99%URL were classified as procedure-related infarctions. Results. After PCI, CK-MB was > 3x99%URL in 58/486 patients (12%) and cTnI > 3x99%URL in 292/487 patients (60%). cTnI was > 10x99%URL in all cases with infarction according to CK-MB but CK-MB was often normal despite elevated cTnI. There was an only minimal overlap between two infarction populations, those with cTnI in the range from 1x to 10x99%URL and those with CK-MB 1x to 10x99%URL. Conclusions. With the present quantification scales, infarction rate after PCI is > five-fold higher with cTnI than with CK-MB
Receiver Windowing Design for Narrowband Interference Mitigation in MB-OFDM UWB System
No full textIn 2005, the WiMedia Alliance working with the European Computer Manufacturers Association (ECMA) announced the establishment of the WiMedia MB-OFDM (Multiband Orthogonal Frequency Division Multiplexing) UWB radio platform as their global UWB standard. It was also chosen as the physical layer (PHY) of high data rate wireless specifications for high speed Wireless USB (W-USB), Bluetooth 3.0 and Wireless High-Definition Media Interface (HDMI). However, due to the low power and wide bandwidth nature of UWB systems, in-band narrowband interference (NBI) may hinder the receiver performance. This thesis presents an analysis of NBI impact on the MB-OFDM system for UWB communication. The intent of our analysis is to provide practical solutions for interference mitigation under different NBI models. In our work, a new receiver windowing for zero padding (ZP) OFDM system is proposed to reduce NBI spreading in the MB-OFDM UWB system. Simulations demonstrate the effectiveness of windowing under different NBI models.Microelectronics & Computer EngineeringElectrical Engineering, Mathematics and Computer Scienc
100 Days of Trump: Security and Foreign Policy Implications
No full textThis is an Accepted Manuscript of an article published by Taylor & Francis in Critical Studies on Security on 25 July 2017, available online: http://www.tandfonline.com/10.1080/21624887.2017.1355153
‘I think the 100 days is, you know, it’s an artificial barrier. It’s not very meaningful,’ Trump (2017) declared in an April 2017 interview. Yet candidate Trump (2016) had also issued a ‘100 day action plan to Make America Great Again’. The first ‘100 days’ of an administration has been a barometer for a president’s credibility in the White House since President Franklin Roosevelt (Keith 2017)
Altered immunolocalization of FGF23 in murine femora metastasized with human breast carcinoma MDA-MB-231 cells
No full textIntroduction After the onset of bone metastasis, tumor cells appear to modify surrounding microenvironments for their benefit, and particularly, the levels of circulating fibroblast growth factor (FGF) 23 in patients with tumors have been highlighted. Materials and methods We have attempted to verify if human breast carcinoma MDA-MB-231 cells metastasized in the long bone of nu/nu mice would synthesize FGF23. Serum concentrations of calcium, phosphate (Pi) and FGF23 were measured in control nu/nu mice, bone-metastasized mice, and mice with mammary gland injected with MDA-MB-231 cells mimicking primary mammary tumors. Results and conclusions MDA-MB-231 cells revealed intense FGF23 reactivity in metastasized lesions, whereas MDA-MB-231 cells cultured in vitro or when injected into the mammary glands (without bone metastasis) showed weak FGF23 immunoreactivity. Although the bone-metastasized MDA-MB-231 cells abundantly synthesized FGF23, osteocytes adjacent to the FGF23-immunopositive tumors, unlike intact osteocytes, showed no FGF23. Despite significantly elevated serum FGF23 levels in bone-metastasized mice, there was no significant decrease in the serum Pi concentration when compared with the intact mice and mice with a mass of MDA-MB-231 cells in mammary glands. The metastasized femora showed increased expression and FGFR1 immunoreactivity in fibroblastic stromal cells, whereas femora of control mice showed no obvious FGFR1 immunoreactivity. Taken together, it seems likely that MDA-MB-231 cells synthesize FGF23 when metastasized to a bone, and thus affect FGFR1-positive stromal cells in the metastasized tumor nest in a paracrine manner
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