Rensis Likert 1903–1981

The equivalence of several methods of solving linear simultaneous equations is demonstrated for use in teaching applied animal breeding. Matrix notation represents equations concisely and allows ease of algebraic treatment.     

电视剧艺术特性论

电视剧艺术作为一种独立的艺术样态,根本基础在于其具有的独有特性。本文确立了家庭日常收视的传受特性是电视剧所有特性的发生学基础这一观念,并在此基础上,从电视剧的传播特性、内容特性、艺术特性等三个方面对其进行了论述。本文认为,电视剧的传播特性构成了其内容特性和艺术特性的前提,电视剧内容上的真实性和生活化,艺术上的现实主义、通俗性叙事、以＂话＂为主的声画关系、弱作者性等特点,都受制于其传播特性。通过本文的研究,我们可以进一步认知电视剧自身的艺术特性,同时也为电视剧艺术生产提供理论上的参考。     

高产、优质油菜新品种绵油9号的选育及栽培要点

绵油 9号系采用阶梯式聚敛法 ,经 8年组配和 1 3年优良基因的积累 ,聚种间、地理及生态远缘之亲本的优良基因于一体的优良油菜新品种。它具有丰产性突出 ,增产潜力大 ,品质优良 ,含油量高 ,根系发达 ,耐肥抗倒力强 ,适应性广泛等突出优点。同时介绍了该新品种的栽培要点     

现行草地围栏养畜存在的问题及对策思考

草地围栏养畜曾被报纸、杂志称之为"科学养畜",然而,现行草地围栏养畜在实践中导致牲畜体制弱化,繁殖能力下降,草地退化、沙化,草质恶化,生态严重失衡,集约经营能力差等问题。因此,要在制度上加以规范、管理上加以引导、经营上加以探索、加强社会化服务,促使牧民科学地进行围栏养畜。     

城市核心竞争力探析

根据企业核心竞争力的概念,本文提出城市核心竞争力的观点,认为城市核心竞争力是城市发展的关键因素。本文将城市核心竞争力分为基础优势力和竞争优势力两大方面和若干个层次,并阐述应该从树立城市经营理念、建立学习型城市、进行政府改革和推进产业创新等方面培育城市核心竞争力。     

中国规模化畜禽养殖的现状及其对生态环境的影响

利用1998—2011年中国畜牧业数据,对中国规模化畜禽养殖业发展状况以及规模化养殖对生态环境的影响进行了分析。研究表明：（1）中国规模化畜禽养殖的发展程度比较低,但规模化畜禽养殖是中国畜牧业发展的必然趋势;（2）中国畜禽粪便产生量较大,牛和家禽养殖的粪便是中国畜禽养殖粪便的主要来源;（3）总体来看,目前中国畜禽养殖粪便产生量对环境的影响不大,但在部分地区,畜禽养殖粪便产生量对环境还是具有一定的胁迫压力;（4）目前中国畜禽粪便造成的水体流失较高。     

水稻广谱恢复系蓉恢906的选育及利用

蓉恢 90 6是成都市第二农科所用明恢 6 3作母本、特青早作父本杂交选育而成的籼型优质恢复系。该恢复系株型好、穗大、配合力强、米质优 ,与不育系地谷A配组育成的地谷A×蓉恢 90 6于1995年通过四川省区试 ,与冈 4 6A、Ⅱ - 32A配组育成的冈优 90 6、Ⅱ优 90 6于 1997年、1999年分别通过四川省品种审定委员会审定     

提升技师学院发展动力的探索与思考

根据2010年人力资源和社会保障部《关于大力推进技工院校改革发展的意见》,以"如何提升技工院校的竞争力"为议题,并以此文件精神为指导思想,积极开展加强校企合作,突出办学特色,提升学院发展动力和竞争力的探索。以郑州市技师学院校企合作的范例为依据,论述加强校企合作,突出办学特色对提升学院发展动力和竞争力的积极意义。     

生猪智能养殖与市场供求预测技术应用

从生猪养殖的饲料种植、种猪优选、母猪繁殖、子猪饲养以及商品猪冷链物流、加工、销售等全产业链安全控制模式的角度出发,分析了大数据、云计算、物联网、互联网、5G、人工智能等技术应用于生猪养殖领域的必要性和可行性。探讨了智能养殖技术以及人工智能技术对生猪养殖市场的产销平衡、价格波动等信息的监控和预测。指出利用人工神经网络预测方法和云计算处理方法,可以科学应对由于生猪养殖的周期性和特殊性而造成的我国生猪价格大起大落以及生猪养殖行业市场供需不平衡的局面。     

On the Decline of Marriage in Rural Ireland 1851–1911: The Role of Ecological Constraints and/or Developing Philopatry

The proportion of people who never married and the age at first marriage increased in rural Ireland after the famine (1845–1847). In 1851, 11% of the population were never married at 45–54 years and this percentage increased steadily over time to 34% for men and 25% for women in 1936. The period from 1851 to 1911 was marked by economic progress, and despite some bad years, production, incomes and standards of living increased steadily. Ownership of land, passing from landlord to tennant, thus fixed the population to specific geographic locations and made the rural population increasingly philopatric. The Ecological Constraints Hypotheses (E.C.H.). has been used to explain the low marriage rate. It asserts that delayed dispersal and reproduction are caused by constraints such as a lack of access to resources such as land or mates. However in rural Ireland, wealthy heads of households were more likely to be celibate than occupiers of small holdings. The low nuptiality that developed after the famine appeared first in the more prosperous parts of Ireland and was accompanied by a substantial rise in living standards. The increasingly secure tie after the famine between the rural population and its geographic location reflected a new ecological situation which facilitated a change in reproductive strategy that was characterised by delayed marriage and an increase in celibacy. This strategy is adaptive in a stable ecology without major threats to survival. The data are consistent with evidence from animals and human populations showing associations in a stable ecology between long life expectancy, low population turnover and low fecundity, yet a rate of reproduction that is sufficient to maintain the population in its environment.