川中丘陵区小麦品种绵阳26号的产量构成因素分析

运用相关、通径分析的方法分析了四川省小麦主推品种绵阳 2 6号的产量及其构成因素之间的关系。结果表明 ,绵阳 2 6号小麦品种千粒重的变异不大 ,穗粒数是产量构成的最重要因素 ,合理的有效穗是高产的前提。     

商业企业自有品牌战略研究

深入分析品牌的作用和自有品牌的特性,并就自有品牌的创造、服务保障、法律保护等提出若干对策。     

Additive and Multiplicative Models and Multistage Carcinogenesis Theory

In light of the Armitage-Doll multistage carcinogenesis theory, this paper examines the assumption that an additive relative risk relationship is indicative of two carcinogens that affect the same stage in the cancer process. We present formulas to compute excess cancer risks for a variety of patterns for limited exposure durations to two carcinogens that affect the first and penultimate stages; and using an index of synergy proposed by Thomas (1982), we find a number of these patterns to produce additive, or nearly additive, relative risk relationships. The consistent feature of these patterns is that the two exposure periods are of short duration and occur close together.     

《圆音正考》索解

"尖团音"原本是指满文的尖头字母和圆头字母,分别对应汉语的见组字和精组字.《圆音正考》为了区别业已合流的见精组细音字,对满汉对音规则作出调整,利用满文字头形状的不同将汉语的见组细音字和精组细音字分开,由此"尖团音"内涵变为见精组细音字.《圆音正考》"纠正"了前期满汉对音中见组细音字混乱的局面,即所谓"正考",这一作法适应了满汉对音的需要,因此影响深远取得尊位.     

Quality Provision with Heterogeneous Consumer Reservation Utilities

This study examines a firm's quality and price decisions when consumers differ not only in their willingness‐to‐pay for quality but also in their reservation utility for the basic product. We find that while the firm offers lower‐quality products when consumers' valuations for quality deteriorate, the optimal quality may increase with a negative shift in consumers' reservation utilities. We also investigate the optimal price and quality of the products within a vertically differentiated product line when the number of products is exogenously given. The existing literature shows that when consumers differ only in their willingness‐to‐pay for quality, the firm sets the efficient quality for consumers with the highest valuation for quality, whereas the concern for cannibalization pushes down the quality of inferior products. We find that when consumers are heterogeneous in both their reservation utility and valuation for quality, the concern for cannibalization may distort the quality upwards, even for consumers with the highest willingness‐to‐pay for quality. In addition, a low‐quality product may enjoy a higher profit margin than a high‐quality product within the product line.     

赵树理文学的表征危机

用表征理论省察、考量赵树理文学,会发现赵树理文学也存在着表征危机,具体表现为其作品中的"次要人物"如二诸葛、三仙姑、小飞蛾的文学性描写远胜于其"主要人物"如小二黑、小芹、艾艾等,而这些人物又是他所着力否定的。其主观追求同实际效果之间发生了严重的背反。造成赵树理文学的表征危机的原因是:缺乏相应的谱系、话语范型支持,同时也与他对民间"小传统"中的诗意存在的回避、拒绝、否定有关。结果:一、造成对民间小传统的"暴力改写"和严重的妖魔化;二、使非文学的政治理性不断在文学土地上强势"殖民",导致文学越来越可能趋向被政治简单改写的危机。     

关于文学在魏晋南北朝的地位问题——兼析“文章与道德相抗衡”“文学高于一切”

魏晋南北朝时人已经清楚地认识到了文学本身具有不依附他者的价值,并对这一价值给以肯定。这标志着文学进入了自觉时代,标志着文学取得了独立的地位。然而独立后的文学并没有在东晋被谁真的认为过“驾乎道德之上”,更没有在南朝取得过“高于一切说”的地位。纵观历史,这不仅东晋南朝为然,而且其后的唐、宋、元、明、清等各时代也莫不如此。     

我国证券市场对中小投资者的权益保护

随着我国证券市场的不断发展,中小投资者逐渐成长为市场上一支重要的投资力量。但是,由于我国证券市场的相对不完善,对中小投资者的权益保护措施相对缺乏,中小投资者权益受损现象时有发生。保护中小投资者的合法权益,是规范证券市场的当务之急。     

我国公立高校收费行为分析

我国高等教育收费行为始于1980年高等教育经费由中央和地方分级核拨后,在需求诱致下各高校兴起的招收自费生、收取委培费的实践。这种制度创新正是所谓的免费制度无法实现潜在利益,从而使行为者产生了新的收费制度安排的需求。也正是由于学校单位从免费制度到收费制度的变迁收益,才提供了国家收费制度变迁的重要客观条件。此外,准市场化的内外环境也为高校收费制度改革提供了坚实的客观基础。