162 research outputs found

    Automatic Service Composition Using AND/OR Graph

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    As SOC and Web service technology become more widely used, large amounts of services need to be efficiently and effectively composed to meet complex businesses. In this paper, we proposed an approach to resolve the composition problem over large-scale services. We used an inverted table as index for a quick service discovery, and applied a Service Dependency Graph (SDG) and an AND/OR graph as the algorithm basis for parallel compostion. Considering the semantic information described in Web service, our approach also recognizes and transmits the semantic relationships described i

    Development of IOT network for production quality control

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    The network structure for achieving quality control of production based on the Internet of Things (IoT) technology is constructed. IoT network elements as analyzers, cloud platform, application port is described. Five criteria for selecting an IoT cloud platform are proposed. The mobile application for quality production is developed

    Energy-latency manipulation of multi-modal large language models via verbose samples

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    Despite the exceptional performance of multi-modal large language models (MLLMs), their deployment requires substantial computational resources. Once malicious users induce high energy consumption and latency time (energy-latency cost), it will exhaust computational resources and harm availability of service. In this paper, we investigate this vulnerability for MLLMs, particularly image-based and video-based ones, and aim to induce high energy-latency cost during inference by crafting an imperceptible perturbation. We find that high energy-latency cost can be manipulated by maximizing the length of generated sequences, which motivates us to propose verbose samples, including verbose images and videos. Concretely, two modality non-specific losses are proposed, including a loss to delay end-of-sequence (EOS) token and an uncertainty loss to increase the uncertainty over each generated token. In addition, improving diversity is important to encourage longer responses by increasing the complexity, which inspires the following modality specific loss. For verbose images, a token diversity loss is proposed to promote diverse hidden states. For verbose videos, a frame feature diversity loss is proposed to increase the feature diversity among frames. To balance these losses, we propose a temporal weight adjustment algorithm. Experiments demonstrate that our verbose samples can largely extend the length of generated sequences

    Comparative Effects of Microalgal Species on Growth, Feeding, and Metabolism of Pearl Oysters, Pinctada fucata martensii and Pinctada maxima

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    Pinctada fucata martensii and P. maxima are two main traditional pearl oyster species that can produce seawater pearls. Our previous study showed a higher clearance rate (CR) and growth performance in P. f. martensii than in P. maxima fed with Isochrysis galbana. In this study, the P. f. martensii and P. maxima juveniles of two sizes (large and small) were fed with six different microalgae diets [I. galbana (I), Platymonas subcordiformis (P), Chaetoceros muelleri I, I+P, I+C, and P+C] to evaluate the differences in growth, feeding, and metabolism between two pearl oyster species. After 60 d of the rearing period, P. f. martensii and P. maxima fed with mixed microalgae showed a significantly higher relative growth rate (RGR) than those fed with single microalgae (P< 0.05). The RGRs were significantly higher in P. f. martensii than those in P. maxima fed with the same diets (P< 0.05). The RGRs showed a decreasing tendency with the growth in both pearl oyster species. The CRs of pearl oysters fed with mixed microalgae were significantly higher than those fed with single microalgae (P< 0.05), and the CRs of P. f. martensii were significantly higher than those of P. maxima fed with the same diets (P< 0.05). Significantly lower respiration rates (RRs) were observed in small-size P. f. martensii groups fed with I, P, and I+P diets and all large P. f. martensii groups compared to P. maxima fed with the same diets (P< 0.05). Higher activities of amylase, cellulase, lipase, and pepsin in P. f. martensiiwere observed compared to P. maxima fed with the same diets at two sizes. The pepsin activities in P. maxima decreased with the growth, while there were no consistent pepsin activities of P. f. martensii with the growth. The carbonic anhydrase activities in P. maxima were significantly higher than those in P. f. martensii fed with the same diets (P< 0.05). The carbonic anhydrase activities were highest in the I+C diet group, followed by C+P and I+P, I, C, and P groups. Significant differences were observed among different diet groups in the same pearl oyster species (P< 0.05). Our results suggest that the lower CR and activities of digestive enzymes and higher RRs and activities of carbonic anhydrase may cause a lower growth rate of P. maxima compared to P. f. martensii

    Comparison of live microalgae and Spray-dried algae powder effects on growth, digestive and antioxidant capacity of juvenile pearl oyster <em>Pinctada maxima</em>

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    The pearl production through the pearl oyster *Pinctada maxima's* culture has developed slowly over the past decades due to over-fishing of wild populations and mass mortality at juvenile stages. Indoor farming is an alternative mode for *P. maxima* juvenile cultivation to improve survival rates. In pursuit of optimizing healthy management under the indoor farming mode, the objective of this investigation was to compare the growth performance, digestion, and antioxidant capacity of juveniles fed with different microalgae-based diets (live *Isochrysis zhanjiangensis,* *Platymonas subcordiformis*, *Chaetoceros muelleri*; and spray-dried *I. zhanjiangensis*, *P. subcordiformis*, *C. muelleri* powder). The juvenile survival rates fed with spray-dried microalgae powder (except *C. muelleri* powder) were not significantly different from those fed on live microalgae. However, the growth performance of juveniles fed with spray-dried microalgae powder could have been better than the live one. The digestive enzymatic activities were consistent with growth performance, and diets affected the antioxidant capacity. The spray-dried *I. zhanjiangensis* powder can serve as a substitute for live microalga in *P. maxima* juvenile indoor farming and is recommended under controlled conditions. The findings from this study would provide essential data to improve health management for *P. maxima* juveniles in indoor farming conditions

    p53/p21 Pathway Involved in Mediating Cellular Senescence of Bone Marrow-Derived Mesenchymal Stem Cells from Systemic Lupus Erythematosus Patients

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    Our and other groups have found that bone marrow-derived mesenchymal stem cells (BM-MSCs) from systemic lupus erythematosus (SLE) patients exhibited senescent behavior and are involved in the pathogenesis of SLE. Numerous studies have shown that activation of the p53/p21 pathway inhibits the proliferation of BM-MSCs. The aim of this study was to determine whether p53/p21 pathway is involved in regulating the aging of BM-MSCs from SLE patients and the underlying mechanisms. We further confirmed that BM-MSCs from SLE patients showed characteristics of senescence. The expressions of p53 and p21 were significantly increased, whereas levels of Cyclin E, cyclin-dependent kinase-2, and phosphorylation of retinoblastoma protein were decreased in the BM-MSCs from SLE patients and knockdown of p21 expression reversed the senescent features of BM-MSCs from SLE patients. Our results demonstrated that p53/p21 pathway played an important role in the senescence process of BM-MSCs from SLE

    A motivação e a cooperação desportiva no atletismo

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    A educação física para as crianças e jovens, consiste num período crítico do percurso educacional, dado que pode promover o seu futuro envolvimento desportivo e decisões acerca da sua participação em actividades físicas futuras. Deste modo, o estudo de modelos ou a identificação de determinantes psicológicas, assume-se como uma necessidade para o desenvolvimento de intervenções adequadas para o aumento dos níveis de actividade física. A orientação motivacional e o sentido de cooperação, são factores de primordial importância na coordenação e no sucesso de diversas actividades humanas, e de impacto bem visível no âmbito do desporto. Assim, o presente trabalho destina-se à verificação das possibilidades de correlação entre orientação motivacional e sentido de cooperação em participantes de uma mesma modalidade desportiva, neste caso o atletismo, para o que se utilizou o “Task and Ego Orientation in Sport Questionnaire” (TEOSQ), na versão portuguesa desenvolvido por Duda e colaboradores (1989, 1992, citado por Cruz, 1996), de Fonseca e Brito, (2006) e o Cuestionario de Cooperación Deportiva (CCD), igualmente na versão portuguesa, de Almeida, Garcia-Mas, Lameiras, Olmedílla, Ortega, Martins, (2006). A amostra foi constituída por 52 atletas, onde 51,9% dos sujeitos são do sexo masculino e 48,1% são do sexo feminino, de diversas especialidades.ABSTRACT: Physical education for children and young people is a critical period of the educational process, as this selling may promote individual`s futures involvement in physical activity and sports, and may influence young persons decisions about future sport and activity participation. Therefore, the study of models and identification of psychology variables, underscores the need of developing interventions to increase physical activity. The motivational orientation and the direction of cooperation are factors of primordial importance in the coordination and the success of diverse activities human beings, and well visible impact in the scope of the sport. Thus, the present work destines it verification of the possibilities of correlation between the motivational orientation an direction of cooperation in participants of one same porting modality, in this in case that the track and field so that it was used “Task and Ego Orientation in Sport Questionnaire” (TEOSQ), in the Portuguese version developed by Duda and Collaborators (1989, 1992, cited for Cruz, 1996), and the Cuestionario de Cooperación Deportiva (CCD),equally in the Portuguese version of Almeida, Garcia-Mas, Lameiras, Olmedílla, Ortega, Martins, (2006). A sample of 52 athletes, of diverse modalities

    Characterization of DNA Methylation Associated Gene Regulatory Networks During Stomach Cancer Progression

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    DNA methylation plays a critical role in tumorigenesis through regulating oncogene activation and tumor suppressor gene silencing. Although extensively analyzed, the implication of DNA methylation in gene regulatory network is less characterized. To address this issue, in this study we performed an integrative analysis on the alteration of DNA methylation patterns and the dynamics of gene regulatory network topology across distinct stages of stomach cancer. We found the global DNA methylation patterns in different stages are generally conserved, whereas some significantly differentially methylated genes were exclusively observed in the early stage of stomach cancer. Integrative analysis of DNA methylation and network topology alteration yielded several genes which have been reported to be involved in the progression of stomach cancer, such as IGF2, ERBB2, GSTP1, MYH11, TMEM59, and SST. Finally, we demonstrated that inhibition of SST promotes cell proliferation, suggesting that DNA methylation-associated SST suppression possibly contributes to the gastric cancer progression. Taken together, our study suggests the DNA methylation-associated regulatory network analysis could be used for identifying cancer-related genes. This strategy can facilitate the understanding of gene regulatory network in cancer biology and provide a new insight into the study of DNA methylation at system level
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