Showing papers by "Zhejiang Gongshang University published in 2010"
TL;DR: A QoS constrained resource allocation problem is considered, in which service demanders intend to solve sophisticated parallel computing problem by requesting the usage of resources across a cloud-based network, and a cost of each computational service depends on the amount of computation.
Abstract: As cloud-based services become more numerous and dynamic, resource provisioning becomes more and more challenging. A QoS constrained resource allocation problem is considered in this paper, in which service demanders intend to solve sophisticated parallel computing problem by requesting the usage of resources across a cloud-based network, and a cost of each computational service depends on the amount of computation. Game theory is used to solve the problem of resource allocation. A practical approximated solution with the following two steps is proposed. First, each participant solves its optimal problem independently, without consideration of the multiplexing of resource assignments. A Binary Integer Programming method is proposed to solve the independent optimization. Second, an evolutionary mechanism is designed, which changes multiplexed strategies of the initial optimal solutions of different participants with minimizing their efficiency losses. The algorithms in the evolutionary mechanism take both optimization and fairness into account. It is demonstrated that Nash equilibrium always exists if the resource allocation game has feasible solutions.
436 citations
Posted Content•
TL;DR: In this article, the authors analyze how the innovative performance is affected by the scope, depth, and orientation of firms' external search strategies and apply this analysis to firms using STI (science, technology and innovation) and DUI (doing, using and interacting) innovation modes.
Abstract: It is commonly accepted nowadays that external knowledge sources are important for firms’ innovative performance. However, it is still not clear, what dimensions of firms’ external knowledge search strategy are crucial in determining their innovation success and whether these search strategies are contingent on different innovation modes. In this study, we analyze how the innovative performance is affected by the scope, depth, and orientation of firms’ external search strategies. We apply this analysis to firms using STI (science, technology and innovation) and DUI (doing, using and interacting) innovation modes. Based on a survey among firms in China, we find that greater scope and depth of openness for both innovation modes improves innovative performance indicating that open innovation is also relevant beyond science and technology based innovation. Furthermore, we find that decreasing returns in external search strategies, suggested by Laursen and Salter (2006), are not always present and are contingent on the innovation modes. Next, we find that the type of external partners (we label it “orientation of openness”) is crucial in explaining innovative performance and that firms using DUI or STI innovation modes have different sets of relevant innovation partners. This shows that the orientation of openness is an important dimension – in addition to the scope and depth of openness. As respondents are located in China, this study provides evidence that open innovation is also relevant in developing countries.
260 citations
TL;DR: Probiotics treatments remarkably increased respiratory burst activity compared with control, with T-2 showing higher values than T-1 and T-3, and this indicated that treatment with probiotics, B. coagulans B16 and R. palustris G06, could be used to enhance immune and health status, thereby improving growth performance of O. niloticus.
Abstract: A feeding trial was conducted for 40 days to delineate the effect of treatment with probiotics as water additives on tilapia (Oreochromis niloticus) growth performance and immune response. About 360 juveniles were randomly distributed into four treatment groups, each with three replicates. Different probiotics (T-1, Bacillus subtilis B10; T-2, Bacillus coagulans B16; T-3, Rhodopseudomonas palustris G06) were added to the water of tanks at final concentration of 1 × 107 cfu ml−1 every 2 days, with no probiotic added to control tanks. At the end of the feeding trial, fish treated with B. coagulans B16 (T-2) and R. palustris G06 (T-3) had significantly (P 0.05) among the treatment groups. Furthermore, probiotics treatments remarkably increased respiratory burst activity compared with control, with T-2 showing higher values than T-1 and T-3. This indicated that treatment with probiotics, B. coagulans B16 and R. palustris G06, as water additives could be used to enhance immune and health status, thereby improving growth performance of O. niloticus.
215 citations
TL;DR: Compared with the regular MAE and conventional heat-reflux extraction (HRE), the proposed approach exhibited higher efficiency and shorter extraction time, which indicated ILMAE was an efficient, rapid and simple sample preparation technique.
178 citations
TL;DR: This is the first report that the grape pomace extracts selectively and significantly inhibits intestinal α-glucosidase and suppresses postprandial hyperglycemia in diabetic mice, suggesting a potential for utilizing grape p Pomace-derived bioactive compounds in management of diabetes.
Abstract: Postprandial hyperglycemia is an early defect of type 2 diabetes and one of primary anti-diabetic targets. Treatment of postprandial hyperglycemia can be achieved by inhibiting intestinal α-glucosidase, the key enzyme for oligosaccharide digestion and further glucose absorption. Grape pomace is winemaking byproduct rich in bioactive food compounds such as phenolic antioxidants. This study evaluated the anti-diabetic potential of two specific grape pomace extracts by determining their antioxidant and anti-postprandial hyperglycemic activities in vitro and in vivo. The extracts of red wine grape pomace (Cabernet Franc) and white wine grape pomace (Chardonnay) were prepared in 80% ethanol. An extract of red apple pomace was included as a comparison. The radical scavenging activities and phenolic profiles of the pomace extracts were determined through the measurement of oxygen radical absorbance capacity, DPPH radical scavenging activity, total phenolic content and flavonoids. The inhibitory effects of the pomace extracts on yeast and rat intestinal α-glucosidases were determined. Male 6-week old C57BLKS/6NCr mice were treated with streptozocin to induce diabetes. The diabetic mice were then treated with vehicle or the grape pomace extract to determine whether the oral intake of the extract can suppress postprandial hyperglycemia through the inhibition of intestinal α-glucosidases. The red grape pomace extract contained significantly higher amounts of flavonoids and phenolic compounds and exerted stronger oxygen radical absorbance capacity than the red apple pomace extract. Both the grape pomace extracts but not the apple pomace extract exerted significant inhibition on intestinal α-glucosidases and the inhibition appears to be specific. In the animal study, the oral intake of the grape pomace extract (400 mg/kg body weight) significantly suppressed the postprandial hyperglycemia by 35% in streptozocin-induced diabetic mice following starch challenge. This is the first report that the grape pomace extracts selectively and significantly inhibits intestinal α-glucosidase and suppresses postprandial hyperglycemia in diabetic mice. The antioxidant and anti-postprandial hyperglycemic activities demonstrated on the tested grape pomace extract therefore suggest a potential for utilizing grape pomace-derived bioactive compounds in management of diabetes.
170 citations
TL;DR: A concrete construction is proposed, which is proven secure in the random oracle model, based on the modified Decisional Bilinear Diffie-Hellman assumption.
166 citations
TL;DR: The results suggest that the active antiproliferative constituents in AEA are unlikely to be anthocyanins normally found in common berries, suggesting that AEA is an exceptional source of natural antioxidants.
154 citations
TL;DR: The results indicated that the probiotic B. subtilis could significantly promote the growth rate of shrimp by increasing the immune function and antioxidant capacity.
Abstract: The objective of this study was to evaluate the effect of dietary supplementation of a probiotic bacterium, Bacillus subtilis, on the growth, immune response and antioxidant activities of shrimp (Litopenaeus vannamei). Shrimps with an average initial weight of 2.11±0.17 g were randomly assigned to four groups with three replicates. The control group was fed a basal diet, and three treated groups were fed diets supplemented with B. subtilis at doses of 1 × 104, 5 × 104 and 10 × 104 colony-forming unit (CFU) g−1 feed respectively. After 40 days of culture, 10 shrimps from each replicate were taken randomly for the determination of immune response and oxidization resistance indices. The results showed that the shrimps fed with B. subtilis at a dose of 1 × 104, 5 × 104 CFU g−1 feed showed significantly better growth than that of the control diet. The phenoloxidase activities showed a tendency to increase with an increased dose of B. subtilis in diets but there was no significant difference among the three treated groups. In addition, phenoloxidase activities were found to be significantly higher (P<0.05) in the groups treated with B. subtilis than that of the control group. Shrimps treated with 5 × 104 CFU g−1 feed probiotic bacterium showed the highest lysozyme activity and it was significantly higher (P<0.05) than the other groups. However, there was no significant difference in acid phosphatase and alkaline phosphatase activity across all the groups. The total antioxidant capacity, superoxide dismutase and glutathione peroxidase activities in the probiotic-treated groups were significantly increased (P<0.05) as compared with the control groups. Both maleic dialdehyde concentration and superoxide anion activities in the probiotic-treated groups were significantly lower (P<0.05) than those of the control. The probiotic did not affect the nitric oxide synthase and the catalase activity in any of the control and treated groups. These results indicated that the probiotic B. subtilis could significantly promote the growth rate of shrimp by increasing the immune function and antioxidant capacity. The most effective dose of B. subtilis in the diet was 5 × 104 CFU g−1 feed.
151 citations
TL;DR: In this article, seven primocane fall-bearing raspberry ( Rubus idaeus L.) cultivars, Nova (red), Dinkum ( red), Heritage (red, Autumn Britten), Josephine, Anne (yellow), Fall Gold (yellow) were analysed for potential health promoting properties including their inhibitory effect on starch and fat digestive enzymes, antioxidant activities, and phenolic composition.
144 citations
TL;DR: The results suggested that the commercial microbial proteases such as B. subtilis and B. licheniformis could be used to produce effective antioxidant hydrolysates from food proteins.
139 citations
TL;DR: It showed that probiotic, B. coagulans NJ0516 administration in feed with a certain concentration displayed a growth promoting effect and increased the protease and amylase activities.
TL;DR: The effect of Bacillus coagulans ZJU0616 with different concentrations supplemented as probiotic was evaluated on growth performance, feed conversion ratio, survival rate, breast chemical composition, and meat quality of Guangxi Yellow chicken.
TL;DR: Morphological changes in bacteria treated with TP were investigated by transmission electron microscopy, with results indicating that the primary inhibitory action of TP is to damage bacterial cell membranes.
TL;DR: The purpose is to present an efficient and effective heuristic algorithm so that it will be straightforward and easy to implement and Computational results show that the proposed algorithm first fit decreasing (DFF) performs well.
TL;DR: In this article, the characteristics of the reaction between ammonium sulfite, the main desulfurizing solution, and the flue-gas-contained sulfur dioxide during the process of ammonia-based WFGD in a power plant were investigated.
TL;DR: Zhang et al. as discussed by the authors investigated the performance of solar water heater utilization in Zhejiang, a relatively affluent province in China, and found that China has greatly increased solar thermal utilization, which has brought China great economic, environmental and social benefits.
TL;DR: A bacterial strain capable of utilizing dibutyl phthalate (DBP) as its sole source of carbon and energy was isolated from municipal solid waste in a landfill bioreactor as discussed by the authors.
23 Oct 2010
TL;DR: A new scheduler which makes a scheduling decision by evaluating the entire group of tasks in the job queue is proposed, which can get a shorter make span for jobs than FIFO and delay scheduling policies and achieve a better balanced load across all the nodes in the cloud.
Abstract: Task scheduling problems are of paramount importance which relate to the efficiency of the whole cloud computing facilities. In Hadoop, the open-source implementation of MapReduce, scheduling policies, such as FIFO or delay scheduling in FAIR scheduler is used by the master node to distribute waiting tasks to computing nodes (slaves) in response to the status messages of these nodes it receives. Although delay scheduling policy has claimed to improve the throughput and response times by a factor of 2 compared to FIFO policy, it can still achieve more improvement by considering a holistic view of all the tasks waiting to be processed. Therefore, this paper proposes a new scheduler which makes a scheduling decision by evaluating the entire group of tasks in the job queue. A genetic algorithm is designed as the optimization method for the new scheduler. The preliminary simulation results show that our scheduler can get a shorter make span for jobs than FIFO and delay scheduling policies and achieve a better balanced load across all the nodes in the cloud.
TL;DR: This paper presents a multimodal biometric identification system based on finger geometry, knuckle print and palm print features of the human hand and demonstrates the feasibility and effectiveness of the proposed method.
TL;DR: In this paper, the authors examined the effects of China's outward direct investment on growth in its own productivity, and at two specific reasons for this growth: technology sourcing and improvements in efficiency.
TL;DR: The major polymethoxyflavones in the fruit (ponkan) peels of Citrus reticulata Blanco cv. ponkan were identified as isosinensetin, sinensetIN, nobiletin and tetramethyl-o-scutellarein by a combined separation using high-speed countercurrent chromatography and preparative high performance liquid chromatography, and structure elucidation by electrospray ionisation mass spectrometry (ESI-MS) and 1H and 13C nuclear magnetic resonance
TL;DR: In this paper, the adsorption behavior of La(III) ion on bamboo charcoal was investigated with various chemical methods and IR spectrometry, including the effects of pH, average particle size, initial ion concentration, contact time and temperature by batch method.
TL;DR: Probiotic treatments significantly improved the final weight, daily weight gain (DWG) and relative weight Gain (RWG) of the shrimp (P<0.05) as compared with those of the control and there were no significant differences in final weight and RWG among the treatments.
Abstract: The present research evaluated the effects of probiotics, Lactobacillus acidophilus RS058, Rhodopseudomonas palustris GH642 and Bacillus coagulans NJ105, as water additives on growth performance and immune response of the white shrimp, Penaeus vannamei. The shrimp, with average weight of 3.38±0.13 g, were stocked in each of the 12 500-litre polypropylene tanks, with three tanks treated with L. acidophilus RS058 (T-1), R. palustris GH642 (T-2) and B. coagulans NJ105 (T-3), respectively, at a final concentration of 1×107 cfu ml−1 every day, and the remaining three tanks were without any probiotic and served as the control. The trial was carried out for 35 days and the results indicated that probiotic treatments significantly improved the final weight, daily weight gain (DWG) and relative weight gain (RWG) of the shrimp (P 0.05) in final weight and RWG among the treatments. As for T-1, no significant differences we...
TL;DR: For weighted progressive iteration approximations, it is proved that the normalized B-basis of a space provides the fastest convergence rate among all normalized totally positive bases of the space.
TL;DR: This work considers a scheduling problem with job-dependent learning effects and multiple rate-modifying activities and shows that all the cases of the problem are polynomially solvable.
TL;DR: Analysis of cell proliferation, cell viability, apoptosis, and receptor gene expression showed significant differences between the enantiomers of LCT or cis-BF in estrogenic potential and immunocytotoxicity, suggesting that other chiral xenobiotics may also show a directional enantioselectivity in immunotoxicity and endocrine toxicity.
15 May 2010
TL;DR: Under the dual protection with the DES algorithm and the RSA algorithm, the data transmission in the Bluetooth system will be more secure and it is clear that the procedure of the entire encryption is still simple and efficient as ever.
Abstract: To enhance the security of data transmission in Bluetooth communication, a hybrid encryption algorithm based on DES and RSA is proposed. The currently used encryption algorithm employed by the Bluetooth to protect the confidentiality of data during transport between two or more devices is a 128-bit symmetric stream cipher called E0. It may be broken under certain conditions with the time complexity O(264). In the proposed hybrid encryption algorithm, instead of the E0 encryption, DES algorithm is used for data transmission because of its higher efficiency in block encryption, and RSA algorithm is used for the encryption of the key of the DES because of its management advantages in key cipher. Under the dual protection with the DES algorithm and the RSA algorithm, the data transmission in the Bluetooth system will be more secure. Meanwhile, it is clear that the procedure of the entire encryption is still simple and efficient as ever. In addition, the confidentiality of the hybrid encryption algorithm is also discussed.
TL;DR: Zhang et al. as mentioned in this paper used data envelopment analysis (DEA) techniques, based on the concept of input-specific technical efficiency, to develop farm-level technical efficiency measures and sub-vector efficiencies for irrigation water use.
TL;DR: In this paper, a rapid and selective HPLC method was developed for the simultaneous analysis of acetoin (ACT) and tetramethylpyrazine (TMP) in fermentative foods with detection limits of 5.625 and 0.033μg/mL, respectively.
TL;DR: By oral delivery of rVP28-bs, shrimp showed significant resistance to WSSV and an effect on the innate immune system of shrimp, suggesting that the remarkably enhanced level of iNOS after rVP 28-bs administration might be responsible for antiviral defense in shrimp.