Surfing mobile internet motivated by fashion attentiveness: An empirical study of mobile internet use in China

The research purpose of this paper is threefold: first, to test and verify the influences of fashion attentiveness on mobile communication in the context of China, and second, to analyze how fashion attentiveness moderate other demographical variables' influence on mobile Internet use, and third, to analyze how new mobile service influence the mobile Internet use. This paper confirms that fashion attentiveness has positive influence on the use of mobile Internet, and it moderates the influences of income, education, use of mobile. Further, fashion attentiveness influences on new mobile Internet services are tested. The findings imply that first, fashion attentiveness is very important because of its moderation effect on other variables' influence, and second, new mobile Internet technology and services are of great significance for their mediation effects of fashion attentiveness's influence

Thermodynamic properties of the itinerant-boson ferromagnet

Thermodynamics of a spin-1 Bose gas with ferromagnetic interactions are investigated via the mean-field theory. It is apparently shown in the specific heat curve that the system undergoes two phase transitions, the ferromagnetic transition and the Bose-Einstein condensation, with the Curie point above the condensation temperature. Above the Curie point, the susceptibility fits the Curie-Weiss law perfectly. At a fixed temperature, the reciprocal susceptibility is also in a good linear relationship with the ferromagnetic interaction.Comment: 5 pages, 5 figure

Enhancing Flash Lifetime in Secondary Storage

This research addresses the limited usable life of NAND flash-based storage systems. Unlike a magnetic disk drive, a NAND flash suffers from limited number of write cycles ranging from 10-100K depending on the specific type of flash. As flash memory densities increase and cell sizes shrink, further decrease in write endurance is expected. Although substantial research has been conducted to solve or mitigate the problem by wear leveling, write endurance remains a concern for write intensive applications. We have proposed to use a DRAM cache to filter write traffic to flash memory. Intuition tells us that DRAM cache can filter writes to flash by coalescing and merging overwrites. However, the effectiveness of such a mechanism is not obvious considering that a large file system cache already exists which also merges overwrites. Since DRAM is volatile, to handle integrity of data upon power failure, we propose to use a supercapacitor backup which can provide short duration power during which the DRAM data can be retired to flash memory. The use of supercapacitor is superior to traditional use of battery-backed DRAMs as batteries, unlike super capacitors, suffer from limited number of charge/discharge cycles as well as slow charge times. We studied the effectiveness of DRAM cache in reducing write traffic to flash and the resulting response time and throughput changes. We investigated the use of a DRAM cache under two settings: a) when flash is used as a disk cache within a magnetic disk controller and b) when flash is used as a full secondary storage. Under the first setting, we used two levels of disk cache: DRAM disk cache and flash disk cache. Under the second setting, we used a single DRAM cache to filter the traffic to the full flash secondary storage. For both settings, we compared two policies to retire data from DRAM to flash memory: early vs. lazy retirement. In early retirement policy, flash is updated at the same time DRAM is updated. In lazy retirement policy, flash is updated only upon data eviction from DRAM cache. Conventionally, early update policy has been used to avoid data loss upon power failure. With early update, write traffic to flash is not reduced via DRAM cache. In contrast, lazy update policy substantially reduces write traffic thereby extending the flash lifetime. Our simulation results show that using a medium-sized DRAM cache, flash lifetime doubles with lazy update policy compared to early update policy. Moreover, miss ratio and average response time decrease as well. With little effort, our technique can be extended to improve the usable life of other emerging non volatile memory systems, such as PCM and MRAM

Non-Markovian Dynamics of Entanglement for Multipartite Systems

Entanglement dynamics for a couple of two-level atoms interacting with independent structured reservoirs is studied using a non-perturbative approach. It is shown that the revival of atom entanglement is not necessarily accompanied by the sudden death of reservoir entanglement, and vice versa. In fact, atom entanglement can revive before, simultaneously or even after the disentanglement of reservoirs. Using a novel method based on the population analysis for the excited atomic state, we present the quantitative criteria for the revival and death phenomena. For giving a more physically intuitive insight, the quasimode Hamiltonian method is applied. Our quantitative analysis is helpful for the practical engineering of entanglement.Comment: 10 pages and 4 figure

Parameter estimation and arrangement optimization of particle dampers on the cantilever rectangular plate

The particle damper as a passive means for vibration suppression, is preferred due to its simplicity and easy to implement and control, with no need for any auxiliary power equipment. The bottleneck of the design for the particle damper is that damping performance is influenced by many parameters including particle material and size, packing ratio and cavity dimensions of enclosure such as length, width and diameter. In fact, the overall damping effect of particle damper is closely related to the primary structure system parameters. However, the influences of the excitation point, dampers arrangements, excitation force amplitude, and excitation force type for overall damping effect are scarce reported in the open literatures. How to exert particle damper on the structure and how many particles filled within the cavity, which are needed to face the problem in the engineering practice. In the face of doubt above-mentioned, the above questions will be clarified in this paper. At the same time, an optimization algorithm by the application of genetic algorithms of BP neural network is carried out in order to get most excellent damping effect. These will offer significance guidance to design and conduct particle dampers implement in the specific engineering practice with reference significance

Localization, Globalization, and Traveling Chinese Culture

In their article Localization, Globalization, and Traveling Chinese Culture Chengjun Wang and Junhong Ma discuss three main channels of the traveling of Chinese culture to the outside world. Focusing on the situation of bilingualism (i.e., Chinese and English) and the need of spreading Chinese literature and culture especially in the English-speaking world, Wang and Ma argue for localization and globalization. Further, Wang and Ma argue that in order to narrow the gap of the cultural divide between China and the West. In addition to the need for bilingualism especially in the case of translation, they posit that especially the writing of the literary history of Chinese is needed in both English and Chinese (hence their argumentation with regard to bilingualism)

The relationship between Cho/NAA and glioma metabolism: implementation for margin delineation of cerebral gliomas

BACKGROUND: The marginal delineation of gliomas cannot be defined by conventional imaging due to their infiltrative growth pattern. Here we investigate the relationship between changes in glioma metabolism by proton magnetic resonance spectroscopic imaging ((1)H-MRSI) and histopathological findings in order to determine an optimal threshold value of choline/N-acetyl-aspartate (Cho/NAA) that can be used to define the extent of glioma spread. METHOD: Eighteen patients with different grades of glioma were examined using (1)H-MRSI. Needle biopsies were performed under the guidance of neuronavigation prior to craniotomy. Intraoperative magnetic resonance imaging (MRI) was performed to evaluate the accuracy of sampling. Haematoxylin and eosin, and immunohistochemical staining with IDH1, MIB-1, p53, CD34 and glial fibrillary acidic protein (GFAP) antibodies were performed on all samples. Logistic regression analysis was used to determine the relationship between Cho/NAA and MIB-1, p53, CD34, and the degree of tumour infiltration. The clinical threshold ratio distinguishing tumour tissue in high-grade (grades III and IV) glioma (HGG) and low-grade (grade II) glioma (LGG) was calculated. RESULTS: In HGG, higher Cho/NAA ratios were associated with a greater probability of higher MIB-1 counts, stronger CD34 expression, and tumour infiltration. Ratio threshold values of 0.5, 1.0, 1.5 and 2.0 appeared to predict the specimens containing the tumour with respective probabilities of 0.38, 0.60, 0.79, 0.90 in HGG and 0.16, 0.39, 0.67, 0.87 in LGG. CONCLUSIONS: HGG and LGG exhibit different spectroscopic patterns. Using (1)H-MRSI to guide the extent of resection has the potential to improve the clinical outcome of glioma surgery

Efficiency and risk in sustaining China’s food production and security: Evidence from micro-level panel data analysis of Japonica rice production

Sustainable food production and food security are always challenging issues in China. This paper constructs a multi-element two-level constant-elasticity-of-substitution (CES) model to assess technological progress in, and its contribution to, japonica rice production in China. The results show that the speed of technological progress in the production of japonica rice on average was 0.44% per annum in 1985–2013, and technological progress has contributed significantly to the growth of japonica rice production in China. Robustness checks show that the results appear to be sensitive to which sub-sample is used. Labour and some other inputs are found to be significant but negative, especially during the middle sampling period of 1994–2006 and in eastern and western regions. This has important policy implications on the impact of rural-to-urban migration and farmers’ human development. View Full-Tex