How does Digital Interactive Information Influence Stock Performances

Currently, a new form of media, called Digital Interactive Media, has been popular in Chinese stock market. Investors can interact with listed companies directly. Therefore, it might be necessary to deconstruct and extract features of the interactive platform\u27s information to understand the influence mechanism of digital platform on stock price fluctuations. This paper uses web crawling technology to obtain massive interactive information from Panorama from 2015 to 2019, extracts some valuable influencing factors through emotional quantification technology, and creates a Multiple Regression Model to explore effect of different emotional factors on stock price volatility. The empirical results show that the sentiment in investors\u27 questions will not significantly affect correspondent stock prices, but the tone and sentiment of the response of listed companies will significantly influence stock prices trends, especially the price of the current trading day or next trading day. The robustness test and endogeneity test supports the research conclusions

Rapid Assessment of Intertidal Wetland Sediments

Urbanization of coastal areas poses a severe threat to ecologically valuable intertidal wetlands. This paper presents a pragmatic approach called Rapid Assessment for Intertidal Wetland Sediments (RAITWS) for evaluating the sediment quality of intertidal wetlands. RAITWS involves construction of reference groups, selection of a subset of environmental variables, matching of test sites to reference groups, prediction of the benthic fauna community structure (e. g. of macroinvertebrates) at test sites, evaluation of the Observation to Expectation ratio (O/E ratio), quantification of environmental variables with series of dynamic numerical models, and interpretation of the O/E findings. The proposed method extends the existing rapid biological assessment approach from static to dynamic applications. In particular, RAITWS provides a fast method of assessing intertidal wetland sites which are undergoing ecological change due to nearby coastal development.Environmental SciencesSCI(E)EI0ARTICLE5574-5852

Bathymetry of the Pacific plate and its implications for thermal evolution of lithosphere and mantle dynamics

A long-standing question in geodynamics is the cause of deviations of ocean depth or seafloor topography from the prediction of a cooling half-space model (HSC). Are the deviations caused entirely by mantle plumes or lithospheric reheating associated with sublithospheric small-scale convection or some other mechanisms? In this study we analyzed the age and geographical dependences of ocean depth for the Pacific plate, and we removed the effects of sediments, seamounts, and large igneous provinces (LIPs), using recently available data sets of high-resolution bathymetry, sediments, seamounts, and LIPs. We found that the removal of seamounts and LIPs results in nearly uniform standard deviations in ocean depth of ∼300 m for all ages. The ocean depth for the Pacific plate with seamounts, LIPs, the Hawaiian swell, and South Pacific super-swell excluded can be fit well with a HSC model till ∼80–85 Ma and a plate model for older seafloor, particularly, with the HSC-Plate depth-age relation recently developed by Hillier and Watts (2005) with an entirely different approach for the North Pacific Ocean. A similar ocean depth-age relation is also observed for the northern region of our study area with no major known mantle plumes. Residual topography with respect to Hillier and Watts' HSC-Plate model shows two distinct topographic highs: the Hawaiian swell and South Pacific super-swell. However, in this residual topography map, the Darwin Rise does not display anomalously high topography except the area with seamounts and LIPs. We also found that the topography estimated from the seismic model of the Pacific lithosphere of Ritzwoller et al. (2004) generally agrees with the observed topography, including the reduced topography at relatively old seafloor. Our analyses show that while mantle plumes may be important in producing the Hawaiian swell and South Pacific super-swell, they cannot be the only cause for the topographic deviations. Other mechanisms, particularly lithospheric reheating associated with “trapped” heat below old lithosphere (Huang and Zhong, 2005), play an essential role in causing the deviations in topography from the HSC model prediction

Učinak hidrolizata glutena i njegovih frakcija dobivenih ultrafiltracijom na svojstva tijesta i kakvoću kruha

Two fractions (50-K and permeate) from a proteolytic hydrolysate (degree of hydrolysis, DH=3.8 %) of wheat gluten were separated using ultrafiltration (UF) membrane with molecular mass cut-off of 50 kDa. The effects of the wheat gluten hydrolysate (WGH) and its UF fractions on the mixing behaviour and viscoelastic properties of wheat dough were presented. The WGH and its UF fractions modified the mixing properties of dough. The addition of these fractions improved the viscoelastic characteristics of wheat dough. A significant (p<0.05) effect of 50-K fraction on these characteristics of wheat dough was observed. After adding these fractions, the bread was considered acceptable by the sensory panel. Also, 50-K fraction resulted in significant (p<0.05) increase in the crumb firmness, while the bread made with wheat flour with WGH and permeate (P) fraction showed softer crumbs compared to that of wheat flour. Moreover, these fractions had anti-staling properties for bread during storage. Hence, the wheat gluten hydrolysate and its UF fractions are the products with promising potential in the baking products.Odvojene su dvije frakcije (50-K i permeat) iz proteolitičkog hidrolizata glutena (stupanj hidrolize, DH=3,8 %) pomoću ultrafiltracijske (UF) membrane sa segmentima molarne mase od 50 kDa. Prikazan je učinak hidrolizata glutena i njegovih frakcija dobivenih ultrafiltracijom na dizanje tijesta i njegovu viskoznost i elastičnost tijekom miješanja. Utvrđeno je da se dodatkom hidrolizata glutena i njegovih frakcija mijenjaju svojstva tijesta pri miješanju, te poboljšavaju viskoznost i elastičnost tijesta. Uočen je značajan učinak (p<0,05) dodatka frakcije 50-K na ta svojstva tijesta, te znatno (p<0,05) povećanje čvrstoće mrvica, a takav je kruh imao zadovoljavajuće karakteristike, što je potvrdila i ocjenjivačka komisija. Kruh od pšeničnog brašna s dodatkom hidrolizata glutena i frakcije permeata dao je mekše mrvice od kruha napravljenog samo od pšeničnog brašna. Osim toga, dodatak tih frakcija spriječio je stvaranje plijesni na kruhu tijekom skladištenja. Stoga hidrolizat glutena i njegove frakcije dobivene ultrafiltracijom imaju velike mogućnosti primjene u pekarskim proizvodima

Mathematical Model of \u3cem\u3eChlorella minutissima\u3c/em\u3e UTEX2341 Growth and Lipid Production Under Photoheterotrophic Fermentation Conditions

To reduce the cost of algal biomass production, mathematical model was developed for the first time to describe microalgae growth, lipid production and glycerin consumption under photoheterotrophic conditions based on logistic, Luedeking–Piret and Luedeking–Piret-like equations. All experiments were conducted in a 2 L batch reactor without considering CO2 effect on algae’s growth and lipid production. Biomass and lipid production increased with glycerin as carbon source and were well described by the logistic and Luedeking–Piret equations respectively. Model predictions were in satisfactory agreement with measured data and the mode of lipid production was growth-associated. Sensitivity analysis was applied to examine the effects of certain important parameters on model performance. Results showed that S0, the initial concentration of glycerin, was the most significant factor for algae growth and lipid production. This model is applicable for prediction of other single cell algal species but model testing is recommended before scaling up the fermentation of process

Correlated Multivariate Shock Models Associated With A Renewal Sequence AND Its Application to Analysis of Browsing Behavior of Internet Users

A correlated multivariate shock model is considered where a system is subject to a sequenceof J different shocks triggered by a common renewal process. Let (Y (k))∞k=1 be a sequence of independentlyand identically distributed (i.i.d.) nonnegative random variables associated with the renewalprocess. For the magnitudes of the k-th shock denoted by a random vector X(k), it is assumed that[X(k), Y (k)] (k = 1, 2, · · · ) constitute a sequence of i.i.d. random vectors with respect to k while X(k) andY (k) may be correlated. The system fails as soon as the historical maximum of the magnitudes of anycomponent of the random vector exceeds a prespecified level of that component. The Laplace transform ofthe probability density function of the system lifetime is derived, and its mean and variance are obtainedexplicitly. Furthermore, the probability of system failure due to the i-th component is obtained explicitlyfor all i ∈ J = {1, · · · , J}. The model is applied for analyzing the browsing behavior of internet users

ユウキ ケイソ カゴウブツ ノ ブンシナイ カッセイカ オ リヨウスル センイ キンゾク ショクバイ タンソ - タンソ ケツゴウ ケイセイ ハンノウ ニ カンスル ケンキュウ

京都大学0048新制・課程博士博士(工学)甲第13828号工博第2932号新制||工||1433(附属図書館)26044UT51-2008-C744京都大学大学院工学研究科材料化学専攻(主査)教授 檜山 爲次郎, 教授 大嶌 幸一郎, 教授 松原 誠二郎学位規則第4条第1項該当Doctor of EngineeringKyoto UniversityDFA

The pan-genome of Lactobacillus reuteri strains originating from the pig gastrointestinal tract

Background Lactobacillus reuteri is a gut symbiont of a wide variety of vertebrate species that has diversified into distinct phylogenetic clades which are to a large degree host-specific. Previous work demonstrated host specificity in mice and begun to determine the mechanisms by which gut colonisation and host restriction is achieved. However, how L. reuteri strains colonise the gastrointestinal (GI) tract of pigs is unknown. Results To gain insight into the ecology of L. reuteri in the pig gut, the genome sequence of the porcine small intestinal isolate L. reuteri ATCC 53608 was completed and consisted of a chromosome of 1.94 Mbp and two plasmids of 138.5 kbp and 9.09 kbp, respectively. Furthermore, we generated draft genomes of four additional L. reuteri strains isolated from pig faeces or lower GI tract, lp167-67, pg-3b, 20-2 and 3c6, and subjected all five genomes to a comparative genomic analysis together with the previously completed genome of strain I5007. A phylogenetic analysis based on whole genomes showed that porcine L. reuteri strains fall into two distinct clades, as previously suggested by multi-locus sequence analysis. These six pig L. reuteri genomes contained a core set of 1364 orthologous gene clusters, as determined by OrthoMCL analysis, that contributed to a pan-genome totalling 3373 gene clusters. Genome comparisons of the six pig L. reuteri strains with 14 L. reuteri strains from other host origins gave a total pan-genome of 5225 gene clusters that included a core genome of 851 gene clusters but revealed that there were no pig-specific genes per se. However, genes specific for and conserved among strains of the two pig phylogenetic lineages were detected, some of which encoded cell surface proteins that could contribute to the diversification of the two lineages and their observed host specificity. Conclusions This study extends the phylogenetic analysis of L. reuteri strains at a genome-wide level, pointing to distinct evolutionary trajectories of porcine L. reuteri lineages, and providing new insights into the genomic events in L. reuteri that occurred during specialisation to their hosts. The occurrence of two distinct pig-derived clades may reflect differences in host genotype, environmental factors such as dietary components or to evolution from ancestral strains of human and rodent origin following contact with pig populations