‘This could be our reality in the next five to ten years’: a blogpost platform as an expectation generation device on the future of insurance markets     

Gert Meyers  Ine Van Hoyweghen 《Journal of Cultural Economy》2018,11(2):125-140

William James (1919) characterises hypotheses as either live or dead. A hypothesis is live when it is taken into account as a ‘real possibility’. We follow James’ suggestion to not attribute intrinsic properties to hypotheses, but rather investigate how they came into being and look at the effects they generate. Expectations of digital technologies are a topic of vivid debate in the insurance industry. Before these expectations can become ‘live’, they have, in the first place, to be generated by market devices. We investigate how the reinsurance blogpost platform Open Minds functions as an ‘expectation generation device’ on the future of insurance markets. Combining Beckert’s work on the role of fictional expectations with the pragmatist turn in sociology of markets, we propose to study ‘expectation generation devices’, provoking expectations on economic markets. In our empirical analysis, we demonstrate the explicit fictional character of the Open Minds contributions, and analyse how a contained space of openness is generated to provoke expectations. We demonstrate how Open Minds can become live through circulation to other expectation generation sites in the insurance industry and beyond. We conclude by reflecting on the importance of expectation generation devices as a particular type of market devices.  相似文献   

冷光膜系的性能分析与技术改造     

戴国钧 《实验室研究与探索》2004,23(6):34-36

结合生产实际，介绍了冷光膜系的物理性能及特点，详细讨论分析了生产工艺中存在的问题，提出了改进的简便实用方法。采用改进的新方法能够提高冷光膜系制品的质量和工业化生产效率。  相似文献   

半导体光催化模拟光合磷酸化研究--单色(绿)光对ATP合成的影响     

常艳红  杨玲娟  雷新有  杨声  朱巧军  高翔 《天水师范学院学报》2003,23(2):30-32

以半导体材料（Zn·Cd）S：Ag-KI为催化剂，在单色(绿)光照下，成功地模拟了光合作用的光合磷酸化。在绿色光照下的光照度、照光时间、ADP(二磷酸腺苷) 浓度、Pi（磷酸氢二钠）浓度及催化剂量等对ATP（三磷酸腺苷）合成的影响。在合适的条件下，ADP 的浓度为1×10-1mmol/l 时的转化率可达到3.2%——5.8%。  相似文献   

从光的衍射看光的直线传播及像质问题     

张明霞 《天水师范学院学报》2001,21(5):15-17

光的衍射有近场衍射和远场衍射两种情形.近场衍射如小孔成像,当孔的尺寸比较大时,光线沿着直线传播,当孔小到一定程度,光线偏离了直线传播发生衍射,孔越小,衍射越显著,物体的几何像失去了清晰的轮廓,而且在边缘附近出现一系列明暗相间的条纹,从而影响了成像的质量;远场衍射如望远镜、显微镜,在物镜的像面上形成的几何像点由于衍射效应变成了一系列的衍射斑,衍射斑重叠越多,像越不清晰,严重影响了成像的质量,使得光学成像仪器的像分辨本领也有了限制.  相似文献   

一部汉语言文字学研究的力作--梁光华《汉语汉字论稿》读后   总被引：1，自引：1，他引：0  

王怀中  胡安顺 《黔南民族师范学院学报》2002,22(4):6-9

梁光华先生的《汉语汉字论稿》一书 ,收录了梁先生近年来的论文四十篇 ,内容涵盖了文字学、音韵学、训诂学、语法学、词汇学、方言学、文化语言学等诸多领域。本书有以下突出的优点 :1、注意发掘新问题 ,开拓新思路 ;2、占有丰富的材料 ;3、科学的研究方法 ;4、注意科研与教学的结合。洋洋洒洒三十余万言 ,均表现出梁先生深厚的语言学功底和敏锐的视角 ,是一部语言文字学研究的力作 ,一部值得语言学者尤其是青年学者一读的好书。需要商榷的一点是轻重唇音的分化时间问题 ,梁先生主张二者分化开始于唐末 ,完成于宋初《集韵》时代 (公元 1 1世纪初 )。而笔者则认为二者的分化应开始于南朝末年至唐代初年 (公元 6世纪末至 7世纪初 ) ,完成于唐代中期。  相似文献   

Consolidation of Black-dyed Māori Textile Artefacts: Evaluating the Efficacy of Sodium Alginate     

Catherine A. Smith  Rachel A. Paterson  Bronwyn J. Lowe  Rangi Te Kanawa 《文物保护研究》2018,63(3):139-154

Black-dyed artefacts are found in museums worldwide, many produced using an iron-tannate compound. Deterioration of iron-tannate dyed artefacts is an international preservation issue: in New Zealand the deterioration of paru (iron-tannate) dyed Māori textiles is widespread. This article reports experimental work testing the efficacy of sodium alginate, a consolidant developed for deteriorated paru-dyed muka (fibre from harakeke; Phormium tenax). The colour stability, strength retention, and acidity of paru-dyed muka consolidated with sodium alginate (0.25, 0.5, and 1% w/v in water) was tested pre- and post-artificial light ageing. This study found that sodium alginate had no negative effect on paru-dyed muka and in some cases provided benefit. Interestingly, the colour of paru-dyed muka is substantially more stable in UV-filtered light than previously recognised. Also microfading results were in agreement with visual assessments of colour change at 1 Mlux hour exposure, providing confidence in this relatively new technique to assess colour change.  相似文献   

Seeking Nettle Textiles – Utilizing a Combination of Microscopic Methods for Fibre Identification     

Jenni A. Suomela  Krista Vajanto  Riikka Räisänen 《文物保护研究》2018,63(7):412-422

Bast fibres have been commonly used as a textile material in Northern Europe since Neolithic times. However, the process of identifying the different species has been problematic, and many important questions related to their cultural history are still unanswered. For example, a modified Herzog test and the presence of calcium oxalate crystals have both been used in identification. In order to generate more reliable results, further research and advancement in multi-methodological methods is required. This paper introduces a combination of methods which can be used to identify and distinguish flax (Linum usitatissimum), hemp (Cannabis sativa), and stinging nettle (Urtica dioica). The research material consisted of reference fibres and 25 fibre samples obtained from 12 textiles assumed to be made of nettle. The textiles were from the Finno-Ugric and Historical Collections of The National Museum of Finland. The fibre samples were studied by observing the surface characteristics and cross sections with transmitted light microscopy, and by using a modified Herzog test with polarized light, in order to identify the distinguishable features in their morphological structures. The study showed that five out of 25 samples were cotton, 16 nettle, one flax, and one hemp. Findings from two samples were inconsistent. The results show that it is possible to distinguish common north European bast fibres from each other by using a combination of microscopic methods. Furthermore, by utilizing these combined methods, new and more reliable information could be obtained from historical ethnographic textiles, which creates new vistas for the interpretation of their cultural history.  相似文献   

Virtual Microscopy as a Learning Tool in Brazilian Medical Education     

Fernanda Somera dos Santos  Mariana Kiomy Osako  Gleici da Silva Castro Perdoná  Márcia Gaião Alves  Katiuchia Uzzun Sales 《Anatomical sciences education》2021,14(4):408-416

Virtual microscopy (VM) is a widely used teaching method in Medical Education in many developed countries. In Brazil, however, this is not the case for most medical schools, considering Brazilian social inequality and uneven access to technology. Recently, the Covid-19 pandemic has also challenged Universities to seek and make a transition toward more effective methods of full-time online education. Thus, the main goal of this work was to verify student's perception and academic performance, assessed upon VM implementation in a Brazilian Medical School. Ribeirao Preto Medical School students answered a 26-question survey with regards to optical microscopy (OM) and VM. Academic performance was compared between participants that were (year of 2019) or were not (year of 2015) exposed to VM. Taken the results together, subjective impressions such as handling, suitability, learning effectiveness, and pleasure using the tools, have shown a higher score for virtual microscopy (median = 29), when compared to optical microscopy (median = 24) with a P-value < 0.001 by Wilcoxon rank test, upon measurement using an ordinal scale. Regarding academic performance, no statistically significant differences were found between groups (P-value = 0.38, Cohen's d = 0.19). Therefore, VM proved to be adequate to the Brazilian medical education in light of Brazilian social contexts and Covid-19 pandemic.  相似文献   

Culturalisation and devices: what is culture in cultural economy?     

Lizzie Richardson 《Journal of Cultural Economy》2019,12(3):228-241

Theorisation of culture is often absent from research on production in the creative and cultural sector. Further, cultural production has been largely untouched by the insights of the cultural economy approach. Culturalisation is a means of addressing the question of what constitutes culture and thus a cultural (economy) approach. It is the process by which culture and cultural production combine in the ‘operationalisation of the real.’ Culturalisation underpins much scholarship in this journal by posing the (economic) real as a problem of definition in order to illustrate the operations involved in its temporary resolution. The implications of this position need further addressing. There is a feedback between culture as a problem of definition and a cultural approach. Devices can interrogate the relationship between processes of cultural definition and the conceptual parameters of a cultural economy approach. Workshopping, projects and events are put forward as cultural devices emerging from a 10-month ethnography of literary performance in Bristol, England. This illustration shows firstly, how culturalisation occurs in a designated cultural sector to contingently realise culture; and secondly, the implicit logic of cultural economy as culturalisation, typified by the device as method, so as to open a debate concerning its implications.  相似文献   

Wearable skin-like optoelectronic systems with suppression of motion artifacts for cuff-less continuous blood pressure monitor     

Haicheng Li  Yinji Ma  Ziwei Liang  Zhouheng Wang  Yu Cao  Yuan Xu  Hua Zhou  Bingwei Lu  Ying Chen  Zhiyuan Han  Shisheng Cai  Xue Feng 《国家科学评论(英文版)》2020,7(5):849

According to the statistics of the World Health Organization, an estimated 17.9 million people die from cardiovascular diseases each year, representing 31% of all global deaths. Continuous non-invasive arterial pressure (CNAP) is essential for the management of cardiovascular diseases. However, it is difficult to achieve long-term CNAP monitoring with the daily use of current devices due to irritation of the skin as well as the lack of motion artifacts suppression. Here, we report a high-performance skin-like optoelectronic system integrated with ultra-thin flexible circuits to monitor CNAP. We introduce a theoretical model via the virtual work principle for predicting the precise blood pressure and suppressing motion artifacts, and propose optical difference in the frequency domain for stable optical measurements in terms of skin-like devices. We compare the results with the blood pressure acquired by invasive (intra-arterial) blood pressure monitoring for >1500 min in total on 44 subjects in an intensive care unit. The maximum absolute errors of diastolic and systolic blood pressure were ±7/±10 mm Hg, respectively, in immobilized, and ±10/±14 mm Hg, respectively, in walking scenarios. These strategies provide advanced blood pressure monitoring techniques, which would directly address an unmet clinical need or daily use for a highly vulnerable population.  相似文献