一类细胞自动机的门限秘密共享方案

利用一维可逆线性记忆自动机的原理,提出了一种新的门限秘密共享方案。该方案以一维可逆线性记忆细胞自动机的原理为基础,利用中国剩余定理,将一个大秘密分解成若干子秘密;以二进制文本形式将这些子秘密分别作为k阶一维可逆线性记忆细胞自动机的k个初始配置之一,进化出秘密共享份额,通过其反向迭代功能恢复这些子秘密后进而重构大秘密。分析结果表明,该方案构建方法简单,易于实现,且在计算上是安全的。     

利用大口黑鲈加工上海熏鱼的工艺及风味特点

上海熏鱼是以青鱼或草鱼为原料,经过浸渍和油爆过程制作出的传统中式菜肴。为解决青鱼养殖量下降和草鱼肌间刺多、土腥味重的问题,弥补加工上海熏鱼的不足,以大口黑鲈替代草鱼制作上海熏鱼,采用单因素试验设计和正交试验设计改良上海熏鱼的加工工艺,采用顶空固相微萃取-气相色谱-质谱法（SPME-GC-MS）分别测定油爆后的上海熏鱼、用不含香辛料的油爆后浸渍液处理的上海熏鱼及上海熏鱼成品中的挥发性风味活性物质,通过GC-MS的定性定量分析得出上海熏鱼的主要风味化合物,采用高效液相色谱法(HPLC)测定呈味核苷酸。结果表明,优化工艺参数为油爆时间6 min,油爆后浸渍液中酱油∶白砂糖=4∶3（鱼块质量的20%∶15%）。3个样品中的挥发性化合物分别有37、47和55种,其中醛酮类、醇类、烃类、芳香类和含氮含硫类物质是上海熏鱼的主要风味化合物。肌苷酸是主要鲜味核苷酸。研究表明,高温油爆过程中发生的美拉德反应、热降解、脂肪酸氧化有助于去除鱼腥味,形成上海熏鱼的特色风味。浸渍和油爆是提高鱼肉制品品质的优良加工工艺。     

江西天然气管道交流干扰检测与防护

江西省天然气有限公司所辖管道存在多处与高压输电线路或电气化铁路相邻的情况,为了全面评价管道的交流干扰风险,参照欧洲标准DDCEN—TS15280—2006及国家标准GB／T50698—2011,进行了交流干扰的初步检测和详细检测,检测参数包括交流干扰电压、交流电流密度、交直流电流密度之比及土壤电阻率。选取交流干扰严重位置,通过开展现场缓解试验和设计计算,确定了交流干扰防护方案：在干扰严重位置与管道平行铺设锌带缓解线,并在缓解线和管道之间串接去耦合器。设计方案实施后,获得了理想的防护效果,可为同类工程提供参考。（图6,表4,参10）。     

Associations between the decrease in bovine clinical mastitis and changes in dairy farmers' attitude,knowledge, and behavior in the Netherlands

The aim of this study was to associate changes in dairy farmers' self-reported attitude, knowledge, and behavior with the decrease in incidence rate of clinical mastitis (IRCM). Farmer-diagnosed clinical mastitis cases were obtained from two surveys conducted before (July 2004–June 2005) and at the end (2009) of a mastitis control program in the Netherlands. Information on farmers' attitude, knowledge, and behavior was also obtained by sending the famers the same questionnaire during both surveys. Multivariable linear regression models identified that the herd level 2004 IRCM explained 28% of the variation in the decrease of IRCM. Changes in farmers' attitude and knowledge, and changes in farmers' behavior additionally explained 24% and 5%, respectively. These results suggest that the way management measures are executed may be at least as important as the fact that they are executed. No control group was available for this study because the intervention was applied at the national level. We therefore do not claim any causal relationships.     

土壤磷素分级方法研究评述

讨论了土壤磷素形态和有机磷有效性研究进展,分析了传统土壤磷素分级方法局限性,综述了土壤磷素分级方法的研究进展,特别详细地描述了Hedley法和Guppy法。     

考虑地面灌水技术制约的灌溉制度优化

制定作物灌溉制度不仅要考虑补充根层土壤水分以满足作物需求，还应考虑灌水方法对灌水量的限制。为研究我国华北地区地面灌溉条件下冬小麦－夏玉米连作的节水灌溉制度，在河北省雄县进行了连续3年不同灌水处理试验，用水量平衡模型ISAREG对各处理进行数值模拟，从而验证了选定的模型和参数。采用该模型模拟了不同水文年冬小麦－夏玉米连作的多种灌溉制度，对各方案的灌水次数、灌水量、降雨和灌溉水量损失以及作物产量等因素进行了对比，并对现行灌溉制度进行了评价。结果显示：雄县现行灌溉定额大大超过了灌溉需水量，主要原因是地面灌水技术的制约，如田面不平、进地流量过小或畦块过大等，造成难以控制小水量灌溉。为研究既能满足作物基本需水要求，又使灌溉水量损失最小的最佳灌水定额，用模拟地面灌溉水流运动的SRFR模型模拟不同生长阶段的灌溉，得到了每次灌溉时不同流量条件下的最小灌水量，以及灌水效率与灌水量的关系，据此提出了与灌水技术改进措施相结合的不同水文年的灌溉制度优化方案。     

油菜目标产量施肥数学模型及氮磷钾肥推荐措施研究

采用三因素二次通用旋转组合设计，对豫南黄棕壤区油莱施用氮、磷、钾肥进行定量研究。建立了油菜目标产量函数模型；通过模型解析选优，确定了每公顷油菜目标产量≥2250kg；≥1875kg；≥1500kg及最高产量的施肥推荐措施。     

Attitudes of hunters, locals, and the general public in Sweden now that the wolves are back

The wolf population in Scandinavia has increased from functionally extinct to about 100 wolves since the 1970s. In 2001 we surveyed four groups of Swedes to analyze the relationship between experience, knowledge, and people's attitude toward wolves. Although all groups support the right of wolves to exist, Swedes who live in areas where wolves have been restored have more negative attitudes than the general public. Attitudes toward wolves are not strong among the general public, thus changes are possible. Experience with wolf predation leads to more negative attitudes toward wolves. Hunters in areas with wolves have the most accurate knowledge about wolves but at the same time the most negative attitudes. But within all four groups as knowledge increases attitudes become more positive. Still, the most knowledgeable local hunters have less favorable attitudes than the least knowledgeable members of the general public. High proportions of the population do not care about wolves which makes it difficult to reach them with information, but does make them susceptible to rapid changes if wolves become a media topic. With the restoration of wolves, hunters, the strongest supporters of wolves in the 1970s, are now less supportive than the general public.     

谈亚布力林业局五味子种植基地建设方案

介绍了亚布力林业局的基本情况,并系统全方位的探讨了在亚布力林业局筹建五味子种植基地的原则、指导思想、技术方案和工艺流程。具有一定的实际操作性和可行性。