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91.
The quick and accurate identification of post-earthquake rescue objects can minimize the casualties and property loss caused by earthquakes. With the rapid development of remote sensing technology, rescue objects can be identified through high-resolution remote sensing images. There are two main categories of approaches to identify rescue object through high-resolution images: automatic extraction by a computer and visual judgment by professionals. Although results can be obtained quickly by using automatic extraction, the accuracy of the results is unacceptably low. For visual judgment, the large demands for time and professionals restrict its wide practical application. In this study, we introduce crowdsourcing into the identification of post-earthquake rescue objects. First, we integrate the advantages of the computer and crowdsourcing, which means that the computer takes advantage of the speed of information processing, while crowdsourcing makes full use of human recognition capabilities. Second, we take visual judgment tasks out of the hands of professionals and entrust the tasks to workers in a crowdsourcing platform. Not only are the human resources infinite, but we can also improve the efficiency of identifying rescue objects. Third, we propose a crowdsourcing model that improves the quality of the results and saves human resources. Finally, experimental results demonstrate that our solution is feasible.  相似文献   
92.
茶文化和传统士人有着紧密的联系,折射着古代文人的某些情怀,影响着文人的心态观念。宋代文人尤其偏好茶,他们在品茶中品味人生,追求清雅脱俗、淡泊悠远的精神世界,形成了深沉内敛的性格特征。  相似文献   
93.
农民的时间感——以山东省淄博市聚峰村为中心   总被引:1,自引:1,他引:0  
我们谈到时间,当然了解,听别人谈到时间,我们也领会。那么时间究竟是什么?没有人问我,我倒清楚,有人问我,我想说明,便茫然不解了1。这是圣奥古斯丁在谈到时间时曾说过的一句至理名言,其中道出了他对于时间的莫大困惑。的确,虽然我们人人都生活于时间之中,无时无刻不在经历时间的流逝,似乎对于时间是非常之熟悉。但时间究竟是什么?恐怕又没有人能真正说得清楚。因此,对于时间,正如法国著名哲学家柏格森所说的那样,我们不可以深入理究,只可直觉与体验2。人类对于时间的体验,大体可分为两类,即标度时间经验与时间之流经验。标度时间经验是对于…  相似文献   
94.
95.
唐《盖巨源墓志铭》不仅记载了盖氏的来源、盖氏家族人物的宦历及生平,还反映了中晚唐时期朝廷为抵御南诏入侵,不断加强剑南西川军事力量的史事。盖巨源曾多次参加唐与吐蕃、南诏的战争,特别是志文中提到的几场中晚唐时期唐与南诏的战事,未见于传世史料。通过对盖巨源墓志的深入解读,加深了我们对唐代中晚期剑南西川军事形势的了解,同时也可了知中晚唐时期的部分地方将领倡导军事与文化修养并重的观念。  相似文献   
96.
    
This preliminary study aims at reconstructing the life history, including dietary patterns, mobility, and health conditions, of a high-class noblewoman (M154) from the late Shu state (晚蜀), the period of Kai Ming regime (開明氏), in the Shuangyuan Village Cemetery of the Eastern Zhou period (770–221 BC), Chengdu Plain, China, as a way to provide a glimpse into the human lifeway in the late Shu culture period under the impact of non-local cultures. We combined skeletal pathological observations with multi-isotope (carbon, nitrogen, and oxygen) analyses of bone collagen, enamel, and dentin serial sections and analyzed multi-tooth enamel from the remaining 10 humans in the cemetery as comparative data. The results suggest that the occupant of M154, a female who died at around 30 years of age, consumed mainly rice (C3-based crop) and high animal protein throughout her life, was weaned at 2–3 years of age, experienced physiological stresses after weaning and at 7–8 years of age but recovered from both rapidly (less than a year), which probably was related to better care, and that the timing of physiological stress embodied in isotopic profiles from incremental dentin sections is consistent with the observed enamel hypoplasia and cribra orbitalia. She more likely lived with the local population from childhood to adolescence and did not experience long-distance migrations. After 7–8 years of age, she consumed relatively stable food resources and lived a stable life until death. Here, we show the stable and well-cared-for life history of a high-ranking noble of the late Shu state, providing new insights into the study of the ancient Shu people and a reference for further research.  相似文献   
97.
    
Dental data can reveal evidence for a past population's oral health, nutrition, and certain cultural activities. This study aims to explore oral health and dental attrition during the late Bronze Age in order to explore health outcomes in different subgroups as well as aspects of foodways and changes in subsistence strategies during the second millennium BCE in northwest China. To do this, the skeletal remains of adult individuals associated with the Siwa material culture (1400–1100 BC) from the Mogou site (n = 28) were macroscopically assessed and compared with previously published data derived from a subsample of individuals associated with Qijia period material culture complex (1750–1400 BC) from the same site. The results show that the Siwa-period population experienced a high frequency of carious lesions and antemortem tooth loss associated with advanced attrition (of both molars and nonmolar teeth), which did not vary significantly by sex. Females had a higher prevalence of carious lesions and antemortem tooth loss than did males, while males had a higher prevalence of dental calculus. These male/female health outcomes are also attested during the earlier Qijia period at the Mogou site. The Siwa period differs from the Qijia in that females experienced slightly worse attrition than their predecessors. Overall, oral health does not diverge significantly between the Qijia and Siwa periods, suggesting that the factors that contributed to oral health including dietary practices may have persisted diachronically for individuals buried at this site.  相似文献   
98.
Cities offer a large menu of possible employment and leisure opportunities. The gains from such consumer city leisure are likely to be lower on more polluted days. We study the association between daily consumption activity and outdoor air pollution in China and find evidence in favor of the hypothesis that clean air and leaving one's home for leisure trips are complements. Given the high levels of air pollution in cities in the developing world, regulation induced improvement in environmental quality is likely to further stimulate demand for the consumer city.  相似文献   
99.
ABSTRACT

Along with its modernization process, China has developed many interests in polar ecology and has connected the significance of the Antarctic and Arctic to its national interests. We present an in-depth analysis and assessment of the state of the art of China’s polar research from following points of view, mechanism of policy making on polar affairs, science diplomacy and polar governance, on-spot research expedition management, allocation of scientific funds, forming polar scientific team, especially on the management system of CHINARE. From an integrated perspective of social and natural sciences, we present a vision for future reform and development of polar affairs of China: to establish a macro and long term policy for the polar regions, to promote and establish a government-led, diversified polar scientific management system, to establish a reasonable and rule based evaluation system, to train, stabilize and expand polar scientific research teams, and to attract and encourage talents for polar science communication.  相似文献   
100.
    
The Lv family tombs in Lantian, Shaanxi Province are one of the most important archaeological sites of China in recent years, providing numerous objects and a wealth of information for the study of the history of the Northern Song dynasty. There were a large number of exquisite cultural relics unearthed from the tombs, including one porcelain box containing white powder, which was identified as women's makeup. The phase composition, microstructure, thermal properties and characteristics of the trace elements in the unearthed white cosmetic powder were comprehensively analysed by X‐ray diffraction (XRD), scanning electron microscopy (SEM), differential scanning calorimetry – thermogravimetry (DSC–TG), Fourier transform infrared (FT–IR) microscopy and inductively coupled plasma atomic emission spectroscopy (ICP–AES). The white makeup powder was determined to be a product made from high‐quality freshwater pearls. These results, for the first time, showed evidence that freshwater pearl powder was used as a cosmetic in ancient China using archaeological objects, providing scientific evidence and new clues to enrich and expand research into the ancient Chinese cosmetic materials.  相似文献   
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