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The brain is an energy-consuming organ that heavily relies on the heart for energy supply. Heart abnormalities detected by electrocardiogram (ECG) might provide diagnostic indicators for brain dysfunctions such as stroke. Diagnosis of brain diseases by ECG requires proficient domain knowledge, which is both time and labor consuming. Deep learning is capable of constructing a nonlinear correlation between ECG and stroke without prior expert knowledge. Here, we propose a data-driven classifier-Dense convolutional neural Network (DenseNet) for stroke prediction based on 12-leads ECG data. With our finely-tuned model, we obtain the training accuracy of 99.99% and the prediction accuracy of 85.82%. To our knowledge, this is the first report studying the correlation between stroke and ECG with the aid of deep learning. The results indicate that ECG is a valuable complementary technique for stroke diagnostics.

Based on the Chinese Family Panel Studies (CFPS) 2010–2018, this article investigates how relative deprivation influences household consumption in rural China. High-dimensional fixed-effects (HDFE), the instrumental variable (IV), and causal mediation analysis (CMA) are leveraged to estimate the causal effect and mechanisms. Results show that relative deprivation reduces survival-oriented consumption of food, development-oriented consumption of transportation, telecommunication, and education, as well as enjoyment-oriented of durable goods, and increases survival-oriented consumption of residence and development-oriented consumption of healthcare and medical services. Mechanism analysis indicates that relative deprivation decreases household consumption through the anticipated effect and increases it through a cognitive trap effect. On the whole, the anticipated effect prevails over the cognitive trap effect.

In recent years, with the vigorous development of the Internet and multimedia technology, the application of Computer-assisted Instruction (CAI) in education has become more and more extensive. The use of new media and new technology to strengthen aerobics teaching and education can activate the classroom atmosphere on the premise of improving the quality of teaching, and it is self-evident to the importance of aerobics teaching. The purpose of this article is to study the application and design of CAI system in aerobics teaching. This article firstly analyzes the functional and non-functional requirements of the CAI system in the teaching of aerobics from the method of teaching needs. Then the system design of the administrator subsystem, the teacher subsystem and the student subsystem in the functional design of the system modules are carried out, and the feasibility and reliability of the system are determined through the function and performance test of the system. Finally, through observation method and questionnaire survey method, the two classes of CAI and traditional teaching are analyzed systematically. Survey data shows that about 90% of students in CAI classes are focused, while only 70% of students in traditional teaching classes are focused; traditional teaching classes account for 21% of participants, while CAI participation is about 42%. It shows that CAI is generally better than traditional teaching in terms of students' classroom performance.

With the rapid development of the express delivery industry, the environmental issues of express packaging waste (EPW) have gradually attracted public attention worldwide. As important participants, consumers' behaviors and attitudes will play a vital role in solving the problem. This study uses the conditional value method (CVM) to evaluate the differences in the attitudes and willingness to pay of urban and rural residents toward EPW in Guangdong Province, China. The results show that the respondents have limited knowledge of the recycling situation, relevant policies and environmental impacts of express delivery packaging, although more than 60% of respondents do think that there is a problem with excessive packaging. The low recycling rate for packaging materials is mainly attributed to the lack of recycling facilities and publicity on environmental issues. The differences between urban and rural residents are mainly over disposal methods, the views on excessive packaging and willingness to pay (WTP) for EPW. Finally, the WTP values of urban and rural residents choosing a “deposit” system are 1.58 ($0.24) and 1.79 yuan ($0.28) per piece, respectively, while the WTP values (for increased fees) are 0.64 yuan ($0.10) and 0.60 yuan ($0.09) per piece, respectively. The obtained results may serve as a reference for different regional responses to the promotion and improvement of EPW management in the future.

In this study, the pore structure and fractal characteristics of shale samples with different bedding directions and sizes from the Longmaxi Formation of the Changning block in the Sichuan Basin were investigated by using CT imaging and low-temperature nitrogen adsorption experiments. The pore morphology, pore structure characteristics, relationships between the fractal dimensions and pore parameters, and effect of the size and bedding direction on pore morphology and various pore parameters were explored. In terms of pore structure characteristics, we found that the pores of shale samples were well developed and connected, forming a large number of pore clusters. The pores were mainly open pores and mesopores, which contributed the most to the specific surface area of the pores. Two fractal dimensions D1 and D2 were calculated from nitrogen adsorption data at relative pressures of 0–0.45 and 0.45–1, using the FHH method. These fractal dimensions characterized the pore surface and pore structure complexity, respectively. D1 ranged from 2.773 to 2.923, with a mean value of 2.821, and D2 varied from 2.853 to 2.899, with a mean value of 2.874. These variations indicated that there were irregular pore surfaces and sophisticated pore structures in the shale. The sample size and bedding direction had a significant impact on pore morphology and various pore parameters. Several pore characteristics of the vertical samples were superior to those of the horizontal samples. With an increase in size, the pore distribution became more uniform, the number of pore clusters increased, and the connectivity between pore clusters was enhanced. There was a good positive correlation between the fractal dimension D2 and specific surface area and moderate positive correlation between D2 and porosity and between D2 and pore volume. However, the fractal dimension D1 had a weak negative correlation with porosity and specific surface area and moderate negative correlation with pore volume. Moreover, both D1 and D2 tended to decrease with increasing average pore diameter.

Buddhist influences on the sacred axis of the capital during Medieval China (220–907) underwent a process of starting with little impact during the era of Eastern Han, Caowei, and Western Jin (220–317) to a more prominent influence from the late Southern and Northern Dynasties (386–589) to early Tang (618–907), peaked during the reign of Wu Zetian (690–705), and roughly returned to the layout patterns from the late Southern and Northern Dynasties to early Tang after the death of Wu Zetian. As maintained below, the process appears complex in terms of the interaction between Buddhism and political space throughout early Medieval China. There are roughly two modes of integration and interaction between Buddhist buildings and ritual buildings with Buddhist influences and the political axis of the capital: the first mode can be regarded as a typical mode after its establishment in the late Northern Wei Dynasty. This mode exhibits major Buddhist influences, particularly regarding the huge scale of monasteries and pagodas, and the location of high-rise pagodas as landmarks flanking the political axis of the capital. The second mode should be regarded as an atypical mode occurring during the late period of Emperor Wu of the Liang (464–549, r. 502–549), the period of Northern Qi (550–577), and the reign of Wu Zetian. At this point, Buddhist buildings and imperial ritual buildings with Buddhist characteristics and symbolic meanings were placed directly on the political axis of the capital, close to or located at the core of the palace. This practice was a sign that the influence of Buddhism in the political culture and ideology of the entire empire during these eras of Emperor Wu of the Liang, the Northern Qi, and the reign of Wu Zetian had reached their culmination. Architecture reflected the most intuitive embodiment of an external visual form in presenting the most symbolic image of power. With the decline of political enthusiasm for advocating Buddhism, Buddhist and related buildings no longer occupied the political axis of the capital. Various forces majeure such as natural fires, demolition, and reconstruction by subsequent rulers also led to the demise of Buddhist influence on the pollical axis of capital architecture in subsequent eras.

This paper proposes a novel tractable approach for accurately analyzing both the coverage probability and the achievable throughput of cellular networks. Specifically, we derive a new procedure referred to as the equivalent uniform-density plane-entity (EUDPE) method for evaluating the other-cell interference. Furthermore, we demonstrate that our EUDPE method provides a universal and effective means to carry out the lower bound analysis of both the coverage probability and the average throughput for various base-station distribution models that can be found in practice, including the stochastic Poisson point process (PPP) model, a uniformly and randomly distributed model, and a deterministic grid-based model. The lower bounds of coverage probability and average throughput calculated by our proposed method agree with the simulated coverage probability and average throughput results and those obtained by the existing PPP-based analysis, if not better. Moreover, based on our new definition of cell edge boundary, we show that the cellular topology with randomly distributed base stations (BSs) only tends toward the Voronoi tessellation when the path-loss exponent is sufficiently high, which reveals the limitation of this popular network topology.

This paper presents a novel dataset for hand gesture estimation. As we know, there lacks a well-designed hand gesture database so far, which greatly impedes the development of distinctive hand gesture estimation. In order to facilitate the research of hand gesture estimation, we build a new dataset of hand gestures. Our dataset contains about 5K labeled and 1K unlabeled single hand images. All the images are separated into 50 varieties according to the types of hand gestures. For each type of hand gesture, occlusion, light, shadow and background are all considered. We hope that the novel dataset would promote the development of distinctive hand gesture estimation from images.

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Objective Ethanol treatment induces an increase in oxidative stress. As licorice compounds are potent antioxidants, our aim was to examine whether magnesium isoglycyrrhizinate attenuated lipid peroxidation, the major end-point of oxidative damage resulting from ethanol administration. Methods Four groups(18 animals in each group) of male Kunming mice were used. The first group served as control and received 0.4 ml normal saline daily for 18 days orally. The second group of mice was given 56% ethanol at 16 ml/kg body weight per day for 18 days orally. The third group was given the same dose of ethanol and administrated magnesium isoglycyrrhizinate (15 mg/kg.d, i.p.) for 18 days. The fourth group was given the same dose of ethanol and administrated with magnesium isoglycyrrhizinate (45 mg/kg.d, i.p.) for 18 days. Twenty four hours after 9 days or 18 days of treatment the mice were sacrificed using 10% chloral hydrate. Sperm counts and motility in the epididymis were assessed. The lipid peroxidation and antioxidants of testicular mitochondria were also determined. The pathological changes of testicle tissue of the mice were observed by light microscopy. Results Magnesium isoglycyrrhizinate effectively prevented the ethanol-induced seminiferous epithelium disorganization and degeneration of Sertoli cells and germ cells. Sperm counts and motility of the magnesium isoglycyrrhizinate treated groups were higher than those of the alcohol treated group, but were lower than those of the control group. The drug exhibited an ability to counteract ethanol induced oxidative challenge as it effectively reduced testicular malondialdehyde (MDA) and increased the activities of superoxide dismutase and glutathione peroxidase. Conclusion Magnesium isoglycyrrhizinate is able to inhibit the ethanol-induced lipid peroxidation and has a protective effect against testicular oxidative injury.

The conventional mathematic model of PV (Photovoltaic) cells contains logarithmic terms, which is not conducive to derivation calculation in small-signal modeling. The parameters of PV system are coupling due to its double-loop control method, and it's hard to precisely choose controller parameters. To solve these two problems above, this paper is based on PV system connected to an infinite power grid, uses the linear-fitting model of PV cells which is conducive to derivation instead of the original engineering one in small-signal modeling, and analyses the small-signal stability of the entire system. Meanwhile, a global-planning design for controller parameters is proposed to globally provide the optimal controller parameters. Simulation results show that the linear-fitting model of PV cells is very similar to the original engineering one, and the proposed design for controller parameters can provide a solution to calculate the global optimization.

Heterogeneous network (HetNet) has been studied as a promising technology to boost the system throughput. A new upper boundary of coverage probability (CP) is derived, which is the one of cooperative communication between two base stations (BSs) for downlink HetNet. For the tractability, only the cooperation between two base stations in the same tier of HetNet is considered and a model is set up, in which each randomly chosen user located in the cooperation zones can communicate with at most one couple of BSs, due to the threshold of Signal-to-Interference-Ratio (SIR). Stochastic geometry theory is used to establish the model of HetNet. Simulation results show that the upper boundary of CP for cooperative communication between two BSs in the same tier is decreasing when the SIR threshold for macrocell tier is increasing. The increasing density of low power BSs can increase the performance of cooperative communication in the same tier, as well as reducing the cooperative SIR threshold for low power BSs tier.

OBJECTIVE: To investigate the effect of dracorhodin perchlorate (DP) on inhibiting high glucose-induced serum and glucocorticoid induced protein kinase 1 (SGK1) and fibronectin (FN) expression in human mesangial cells (HMC), and its mechanism of prevention and treatment on renal fibrosis in diabetic nephropathy (DN) . METHOD: The HMC were divided into normal glucose group (NG group, 5.5 mmol x L(-1) D-glucose), normal glucose +low DP group (NG + LDP group, 5.5 mmol x L(-1) D-glucose +7.5 micromol x L(-1) DP), normal glucose +high DP group (NG + HDP group, 5.5 mmol x L(-1) D-glucose + 15 micromol x L(-1) DP), high glucose group (HG group,25 mmol x L(-1) D-glucose), high glucose +low DP group (HG + LDP group, 25 mmol x L(-1) D-glucose + 7.5 micromol x L(-1) DP)and high glucose +high DP group (HG +HDP group, 25 mmol x L(-1) D-glucose + 15 micromol x L(-1) DP). Each group was examined at 24 hours. The levels of SGK1 and FN mRNA was detected by real-time fluorescence quantitative PCR,and the expression of SGK1 and FN protein was detected by Western blot or indirect immunofluorescence. RESULT: A basal level of SGK1 and FN in HMC were detected in NG group, and the level of SGK1 and FN mRNA and protein were not evidently different compared to that of NG group adding 7.5 micromol x L(-1) DP for 24 hours. On the other hand, the levels of SGK1 and FN mRNA and protein were obviously decreased by adding 15 micromol x L(-1) DP for 24 hours. Compared to NG group, the levels of SGK1 and FN mRNA and protein were increased in HG group after stimulating for 24 hours (P < 0.01). Compared to HG group, the level of SGK1 and FN mRNA and protein were evidently reduced in HG + LDP and HG + HDP groups by adding 7.5 micromol x L(-1) DP and 15 micromol x L(-1) DP for 24 hours (P < 0.01). CONCLUSION: Dracorhodin perchlorate can inhibit high glucose-induced serum and glucocorticoid induced protein kinase 1 (SGK1) and fibronectin(FN) expression in human mesangial cells, and this may be part of the mechanism of preventing and treating renal fibrosis of DN.

The relationship of the weighted mean temperature and the surface temperature was obtained using the radiosonde observation in Anqing from 2004 to 2007. The weighted mean temperature estimated from the regressed formula is higher than that from the Bevis formula when the surface temperature increases, which introduces the difference of approximate 1.9% of the GPS precipitable water vapor when the surface temperature gets to 40degC, and smaller difference in the lower surface temperature. The different regressions between different years induce the difference of 0.72% of the GPS PWV when the surface temperature reaches 40degC, and the difference of 2.17% of the GPS PWV in the surface temperature of -10degC. It suggests that the regressed formula to estimate the weighted mean temperature will be beneficial for the estimation of the GPS PWV in the summer, while it has little positive impact on the estimation in the winter.

To evaluate the effect the vaccine of hemorrhagic fever with renal syndrome (HFRS).Data of totally, 1095 individuals who were immunized with HFRS vaccine type produced by Shenyang Baiao Biotechnology, Ltd were analyzed. 1999-2000 in Laiwu City.Most of the individuals belonged to rural population. In most cases the vaccination was done in spring and autumn. Persons between ages 18-40 years dominated the series. The side effects of the vaccination were seen in 1.71% in which local reaction was 1.35%, general reaction 0.30%, abnormal reaction 0.06% and the lowest reaction rate was seen in the group between ages 7-17.The vaccine was quite effective. Both antibody positive ratio and GMT level of antibody were high.