Cultured meat and cowless milk: on making markets for animal-free food     

Michael J. Mouat 《Journal of Cultural Economy》2018,11(4):315-329

According to its proponents, animal-free animal food products, such as cultured meat and synthetic cow’s milk, have the potential to overcome various environmental, health and ethical challenges that have emerged around global animal product consumption and the industrial agriculture that is needed to support it. Apart from the myriad of technical problems making animal-free food products, critics have pointed out the blurry ontological status of the food and the ethical challenges therein, and have questioned the veracity of the various promissory narratives being produced. This paper considers animal-free food from a social studies of economies and markets (SSEM) perspective. As a market that currently mostly only exists in potential, an SSEM perspective can reveal the various social and material relations that comprise the (bio)capital formation that will underpin any market-to-be, an aspect of markets that are often invisible once markets are up and running. Moreover, this perspective details the intimate role markets have in establishing the ethical and ontological aspects of animal-free foods in a political economy shaped by neoliberalisation and financialisation.  相似文献   

浅谈同余与不变子群的关系     

伊磊 《伊犁师范学院学报》2005,(3):41-42,89

介绍了等价关系与子群的关系,并由此推导出同余关系与不变子群的等价定理,从而进一步加深对等价关系、同余关系、子群、不变子群以及商群的理解.  相似文献   

基于物理元胞自动机的岩石破坏模拟   总被引：1，自引：0，他引：1  

马志涛  谭云亮  张霆 《东南大学学报》2005,21(3):348-352

为了分析岩石材料的非均质性对其破坏演化的影响,根据元胞自动机理论,从能量的角度建立了一种能够从细观层次上对岩石破坏演化进行模拟的物理元胞自动机模型(Mh-PCA模型),模型引用的Weibull随机分布函数对材料的非均质性进行描述.运用该模型,对m分别为1,5,10,15四种不同均质度材料的破坏模式及其破坏过程中的声发射现象进行了模拟分析.结果表明:材料的非均质性对其破坏有重要的影响,均质度越高,破坏过程中的分支裂纹越少,声发射也越集中.物理元胞自动机理论为岩石的破坏研究提供了一种新的研究思路.  相似文献   

S_H型区间值模糊子群(英文)     

李晓萍  王贵君 《通化师范学院学报》1997,(8)

本文在群上定义的区间值模糊集空间上,引入由T—余范数诱导的幂等区间余范数S_H,定义了S_H型区间值模糊子群,同时,讨论并研究了它的一些基本性质和结构特征,进而,给出了它的同态象和逆象定理。  相似文献   

求解车间作业调度问题的免疫粒子群算法     

杨志勇 《鄂州大学学报》2006,13(3):16-19

粒子群算法已成功地应用于著名的旅行商问题和其他一些组合优化难题。为了使用粒子群算法来解决生产问题，该文在原有的粒子群优化模型的基础上提出了一种新的免疫粒子群算法，由具体算例验证该算法是有效的。  相似文献   

自组织临界性与森林火灾系统的宏观规律性   总被引：3，自引：0，他引：3  

宋卫国  汪秉宏  舒立福  赵林城 《中国科学院研究生院学报》2003,20(2):205-211

重点综述了中国森林火灾系统的宏观规律之一——— 自组织临界性 "的研究,包括:(1 )对中国 1 95 0年至 1 989年的真实森林火灾数据进行了分析,并发现了自组织临界性;(2)综合真实森林火灾系统所受到的外界因素(包括人为、环境、树种等),对经典森林火灾模型进行了修正,并构建了新模型;(3 )模拟了森林火灾模型的有限尺度效应,分析了它的实际意义  相似文献   

技术创新网络分裂断层对子群极化的影响研究——基于网络嵌入性视角     

党兴华  成泷  魏龙 《科学学研究》2016,(5):781-792

将分裂断层理论引入技术创新网络,能够为探索中观网络子群结构的动态过程提供重要依据。本研究以2000年至2012年我国电子信息产业联合申请专利为样本构建组织间技术创新网络,探索网络嵌入性视角下分裂断层对子群极化的影响机理。结果表明:嵌入于组织间的二元关系强度在不同成员对间分布不均匀时会使整体网络产生潜在的分裂断层,但分裂断层对子群极化并不存在显著的直接影响;当结构嵌入性水平和位置嵌入性水平较高时,分裂断层对子群极化的作用显著提升。说明潜在的分裂断层在没有被触发的情况下,可能保持休眠状态且不会产生直接影响,当一些关键机制触发分裂断层时,其作用得到显著加强。研究结论为解释网络中观子群结构形成与变化的微观机制提供了新的理论视角,对进一步研究技术创新网络的稳定性和知识共享具有重要的借鉴作用。  相似文献   

Secondary immunization inhibits drug induced apoptosis<Emphasis Type="Italic">in vivo</Emphasis>     

Winston Costa Pereira  Muddanna S. Rao  D. M. Vasudevan 《Indian journal of clinical biochemistry : IJCB》2003,18(2):161-168

Immunization with a proper dose of an antigenic stimulus leads to cell proliferation and antibody response of circulating lymphocytes. We have previously observed that Secondary immunized spleenocytes resist ceramide-mediated apoptosisin vitro. Our present study is aimed at investigating thein vivo effect of immunization on apoptosis. Mice were subjected to either Primary or Secondary dose with Tetanus Toxoid. Unimmunized spleenocytes served as controls. Unimmunized, Primary and Secondary immunized mice were later exposed to chemotherapeutic drugs such as Etoposide/Methotrexate/Vincristine to induce apoptosis. Apoptosis was studied by using the Feulgen reaction on 5μ thin parafin sections of spleen. It was observed that Secondary immunized mice showed a lower percentage of apoptosis as compared to Primary or Unimmunized mice that was subjected to either of the chemotherapeutic drugs. It was thus concluded that Secondary immunization inhibits the process of chemotherapeutic drug induced apoptosis in vivo.  相似文献   

用改进的元胞自动化模型模拟不同信号灯控制策略下的交通流     

何红弟  董力耘  戴世强 《上海大学学报(英文版)》2006,10(3):189-191

Traffic flows controlled by traffic light strategies were investigated via a cellular automaton model with anticipation, which is suitable for describing urban traffic. Three kinds of strategies, i. e., synchronized, green-wave and random switching lights, were designed, simulated and compared with each other. It is shown that the green-wave strategy is only valid at lower density and there is not an effective way with the three strategies to improve the efficiency of traffic flow at high density.  相似文献   

关于可分群     

于荣格  刘力  江瑞侠 《沧州师专学报》2011,(1):101-103

讨论了可分群在可解性、超可解性、幂零性方面的发展过程,并对＇л-Fitting子群进行了进一步的研究,得到了一些新结果。  相似文献