System of crop intensification for more productive,resource-conserving,climate-resilient,and sustainable agriculture: experience with diverse crops in varying agroecologies

With continually increasing demand for food accompanied by the constraints of climate change and the availability and quality of soil and water, the world’s farmers are challenged to produce more food per hectare with less water, and with fewer agrochemical inputs if possible. The ideas and methods of the system of rice intensification which is improving irrigated rice production are now being extended/adapted to many other crops: wheat, maize, finger millet, sugarcane, tef, mustard, legumes, vegetables, and even spices. Promoting better root growth and enhancing the soil’s fertility with organic materials are being found effective means for raising the yields of many crop plants with less water, less fertilizer, reduced seeds, fewer agrochemicals, and greater climate resilience. In this article, we review what is becoming known about various farmer-centred innovations for agroecological crop management that can contribute to agricultural sustainability. These changes represent the emerging system of crop intensification, which is being increasingly applied in Asian, African, and Latin American countries. More research will be needed to verify the efficacy and impact of these innovations and to clarify their conditions and limits. But as no negative effects for human or environmental health have been identified, making these agronomic options more widely known should prompt more investigation and, to the extent justified by results, utilization of these methodologies.     

Evaluating the efficiency of Korean festival tourism and its determinants on efficiency change: Parametric and non-parametric approaches

Local festivals may leverage local specialties and various historical, cultural, and artistic resources throughout their respective regions to attract tourists, inducing positive economic impacts. In this study, this paper is a first attempt to analyze the relative efficiency of local festival tourism by using parametric and non-parametric approaches with the data from local festivals held in Korea from 2015 to 2018. We also deal with the efficiency determinants of each typology of festivals by employing a truncated regression with double bootstrapping. Results showed that the leading sources of inefficiency were primarily embedded in pure technology inefficiency, while the principal operational drivers posed different effects depending on the typology of festivals. These insights have important practical implications for the local festival organizing committees and operators in Korea and are helpful in developing tailored operational strategies to maximize the efficiency among different typologies of festivals.     

Self serving reference points in double auctions

We present a novel approach for modelling self serving bias by way of reference dependence. Bias is modelled as a systematic individual level deviation of the endogenous reference point from the expected price of a good in a two person k-double auction. We find that bias decreases the efficiency of the model, and that efficiency is decreasing in both the level of bias and reference dependence.     

我国水稻产业供给侧结构性改革的思考

[目的]文章在供给侧改革视角下对水稻供需的结构性矛盾等方面进行梳理,分析基于供给侧改革战略的关键环节、实施路径和未来发展趋势,以期为制定我国水稻供给侧改革战略提供参考。[方法]采用文献分析法和调查研究法,从我国水稻生产供求结构、价格"天花板"和成本"地板"双重挤压、水稻生产的资源环境、市场调节等方面分析了我国水稻产业供给侧的现状和存在的问题;通过日本、泰国、中国五常大米政策特点和经验教训的启示,提出了我国水稻产业供给侧结构性改革的策略。[结果]在分析我国水稻产业供给侧现状的基础上,总结得出水稻产业供给侧改革措施:优化水稻产业空间和功能布局,以项目带动水稻产业结构调整,提高和优化稻米品种品质结构、审定标准向抗性优质专用水稻品种倾斜,因地制宜调减水稻生产面积,调整国家收储稻米标准,延长水稻全产业链等。[结论]加速我国水稻产业供给侧改革,能促进稻米产业结构快速升级,有效破解稻米产业的结构性矛盾,增强我国稻米产业可持续发展能力和国际竞争力。     

双平行线阵的快速一维DOA估计

针对传统子空间算法需要进行特征值分解或奇异值分解等复杂计算的问题，提出一种双平行线阵（Double Parallel Linear Array,DPLA）的快速一维波达方向（Direction of Arrival，DOA）估计算法。算法通过处理互协方差矩阵的第一列元素构造出等效的噪声子空间，再通过求根MUSIC（Multiple Signal Classification）算法得到DOA估计，有效避开了特征值分解或奇异值分解，降低了计算复杂度，提高了运算速度。仿真结果表明，该算法在提高了估计精度的同时减少了估计时间。     

高校校园快递“校企双主体”运营模式研究

通过对高校校园快递现状及问题分析,构建快递服务中心"校企双主体"运营模式,从校企共建管理团队,共同制定规章制度,共同培养人才,互培共聘,共同经营管理,共享经营利润等方面阐述了"校企双主体"的内涵,对高校校企合作、人才培养、校园快递服务的提升具有指导性意义。     

几种激励理论在薪酬管理中的应用

激励理论在薪酬管理中有着直接的应用,在制定薪酬政策时必须遵循这些理论所提出的一些观点。应该在薪酬管理中充分运用这些理论,以提高我们薪酬管理的质量。公平理论、双因素理论、期望理论等激励理论也要经常应用。     

省域经济双循环的结构演变及其增长效应——基于IRIOT-MRIO表的双元四循环分解

作为国家的一个地区,省域的经济循环存在省域内、国家和全球三层地理边界,仅进行国内循环和国际循环的分解不能很好地反映其与国内其他省域之间的经济联系,因而有必要对省域经济循环进行更细致的结构分解,然而现有文献对此缺乏研究。本文在国内国际双循环的基础上,根据是否有其他省域参与循环引入单省域多省域双循环,进而对省域经济进行双元四循环的结构分解：单省域参与的国内循环为省内循环,多省域参与的国内循环为省际循环,单省域参与的国际循环为简单国际循环,多省域参与的国际循环为复杂国际循环。基于此,通过构建MRIO-IRIOT表测算出2012、2015、2017年30个样本省域16个行业4种经济循环的产出,用各经济循环的强度（产出占比）来刻画循环结构,并对省域不同行业的循环强度按产值进行加权平均得到各省域各经济循环强度,结果显示：样本期间各省域经济的循环结构存在显著差异,并具有不同的演变趋势;总体上看,循环强度从高到低依次为省内循环、省际循环、复杂国际循环、简单国际循环,呈现出“国内循环为主、国际循环为辅”的发展格局,并具有“国内循环增强、国际循环减弱”的发展态势。进一步考察行业层面的4种经济循环强度变化对行业总产出增长的影响,分析发现：2012年后,4种经济循环对经济增长的贡献从大到小依次为省际循环、复杂国际循环、省内循环、简单国际循环,表明循环结构沿着“以国内大循环为主体”的方向演进,并具有“多省域循环增强、单省域循环减弱,省际循环增强、简单国际循环减弱”的优化趋势;省际循环与复杂国际循环相互强化的效应显著,因而加强地区间的经济联系是推动“国内国际双循环相互促进”的有效路径之一。相比已有文献,本文对省域经济的双元四循环分解拓展和深化了双循环结构的量化分析,从动态角度研究循环结构变化对产出增长的影响有助于深入认识不同循环在经济发展中所起的作用,对国内循环与国际循环相互作用的检验则有利于探求国内国际双循环相互促进的有效路径。本文研究表明,“以国内大循环为主体”的发展格局已基本形成,但还需要进一步强化省际循环,“国内国际双循环相互促进”的实现也需要加强地区间的经济交流和合作。因此,要加快建设全国统一大市场,以地区联动的国内循环质量提升促进国际循环结构升级,进而构建更高层次更高水平的新发展格局。     

绿色壁垒的双刃功能解析

我国加入WTO后,不断受到“绿色壁垒”的困扰,给我国对外贸易造成严重影响。文章主要从纺织业和农产品两个方面就“绿色壁垒”对我国国际贸易的积极和消极影响,以及从它的构筑方和遭受方两个角度来研究其双刃功能。     

番茄糯米发酵饮料的生产工艺

研究了以糯米和番茄为主要原料生产发酵饮料的工艺。该饮料是一种低酒度、营养丰富、口味独特的浑浊型营养保健饮料。