Study upon the Spatial Structure of Regional Eco-tourism-Based upon the Perspective of Supply and Demand and Competition Field

Along with the coming of the low-carbon era, people have paid more and more attention to the natural environment and eco-tourism will embrace a huge development. From the perspectives of the market relationship of supply-demand in economics and of field competition in physics, this paper has discussed upon the present status of the spatial structure of eco-tourism, and analyzed the relationship between supply-demand and field, in order to clarify the direction for the balance between supply and demand in the field and to guide eco-tourism to the way of sustainable development.

Analysis and Forecast of China’s Grain Supply and Demand Quality Grade Structural Balance

Based on the analysis of China’s grain production and demand quality grade, this paper uses the non-equidistance GM (1,1) model and the inference algorithm to predict the structural balance of the supply and demand grades of China’s four major grain crops. The results show that the supply and demand for wheat, corn and rice can maintain a quantitative balance. While, it’s difficult to achieve a quality grade balance in wheat and rice and keep a supply and demand balance in terms of quantity and quality of soybean. Simultaneously, the supply of premium grade corn is greater than the demand. The analysis and prediction results can reflect the existing structural balance matter of grain supply and demand at different quality grades in China, and provide theoretical basis for governments to formulate relevant policies.

The Strategic Analysis of Demand Forecast-Sharing in a Hybrid-Format Online Platform Supply Chain

This paper examines the optimal forecast-sharing strategy in a hybrid-format online platform supply chain where a supplier sells a product through agency format and reselling format provided by a platform retailer who possesses demand forecasts from two channels.Forecast asymmetry and co-opetitive relationship arise between the platform retailer and the supplier,which affect their operational decisions and the supply chain’s performance.To improve supply chain efficiency,we compare different forecast-sharing strategies(i.e.,no forecast sharing,sharing a single forecast,and sharing two forecasts),and analyze the effects of co-opetitive parameters on the optimal forecast-sharing strategy.Our analysis shows that forecast sharing is always beneficial to the supplier,and sharing two forecasts is more beneficial than sharing a single forecast.Whereas for the platform retailer and the whole supply chain,forecast sharing is beneficial only under certain conditions,depending on the co-opetitive parameters.The optimal forecast-sharing strategy is the result of a combination of the negative effect of double marginalization in reselling channel and the positive effect of responding pricing to demand uncertainty in agency channel.We illustrate the parameter regions of the platform retailer’s voluntary sharing,contract sharing,and no sharing,and also find that higher channel competition intensity,higher market share of agency channel,and higher commission rate can promote the platform retailer’s voluntary sharing.Our study extends the research scope of demand forecast-sharing and sheds light on the decision-making processes for managing a hybrid-format online platform supply chain.

Land Use Allocation Based on Interval Multi-objective Linear Programming Model: A Case Study of Pi County in Sichuan Province

Adjusting and optimizing land use structure is one of the essential approaches to solve the conflict between land supply and demand. In this study,an uncertain interval multi-objective linear programming model was established and applied to analyzing the suitability of land use structure in Pi County of Sichuan Province. An adjustment scheme for optimizing land use structure was proposed on the basis of development planning drawn up by the local government. The results are summarized as follows: 1) the optimal adjustment scope for cropland area ranges from 27 976.75 ha to 31 029.08 ha,and the current area is less than the lower limit of the scope; 2) the optimal adjustment scope for garden land area ranges from 4 736.49 ha to 12 967.11 ha,and the current area is less than the lower limit; 3) the optimal adjustment scope for construction land ranges from 7 761.95 ha to 10 393.18 ha,and the current area is greater than the upper limit; 4) the optimal adjustment scope for industry and mining land ranges from 557.29 ha to 693.54 ha,and the current area exceeds the upper limit; and 5) the areas of forest land,grassland and other agricultural land are within the optimal adjustment scope. In order to maximize comprehensive benefit with the limited resources and the demand of sustainable development,the areas of cropland and garden land are supposed to be expanded properly,while the construction land should be controlled and reduced gradually,and the forest land and other agricultural land can be maintained at the current level in short period.

The Relevance of Relationships in the Value Creation Process： Analysis of SCM in the Chemical-Pharmaceutical Sector

This work, through an empirical research （Jayaram, Kannan and Tan model）, aims at analysing, at the same time, the effect of ＂structural mechanisms＂ and ＂relationships building＂ factors on the value creation process in the Supply Chain. The two factors have been chosen among others, as they have been considered able to improve the internal and external processes of the firm and the Supply Chain, and in consequence, able to influence the value creation process of the Supply Chain Management. The research has been directed to the chemical and pharmaceutical sector of the Southern Lazio （Italy） and a factorial analysis, using the software SPSS （16.0） which has been performed in order to verify the influence of these factors in value creation process of the Supply Chain The outcomes confirm the positive contribute in the value creation process for companies that take care of the relationships among the stakeholders in the management process of the supply chain （the ＂relationships building＂ factor） and, in parallel with the analysis of the same process, the secondary role of the ＂structural mechanisms＂ factor has been highlighted.

Research on The Elderly Spiritual Demand in China

Spiritual demand as one of the basic requirements of human, has more important significance for the elderly group. Descriptive statistic analysis shows that in the CLHLS, the elderly spiritual demand and supply is in a state of disequilibrium in our country, supply is far less than demand. The main factors of restricting the old people＇s spiritual need are not being met, including economic factors, intergenerational relations factors, emotional factors and the particularity of spiritual demand, etc. So we need to change our ideas, with the demand of the old structure and strength, by constructing a complete supply system of family, society and government to strengthen for the supply of the spiritual needs of old people, so that the elderly would be happy during his or her later lives.

China's Excess Oil Refining Production Capacity in the Background of the Supply Side Structural Reform

Through analysis of the current situation and newly-increased production capacity-of the oil refining industry of China, this Paper discusses both the continuous expansion trend and the serious excess of production capacity of the oil refining industry of China. Due to the entry of the Chinese economy into the new normal,the accelerated substitution of old energy by new energy and rigid restrictions composed of low carbon and environmental protection requirements, the oil demand of China will continue to increase overall, but the growth will obviously slow down. At the same time, the newly-increased production capacity in Shandong and coastal region will continuously expand, the supply and demand contradiction will intensify, and the structural excess production capacity of the oil refining industry of China will be prominent. It is suggested that the government should attach great importance to the production capacity of the oil refining industry at the macro level, and deeply carry forward the supply side structural reform, and that enterprises should speed up technical innovation,enhance regional and layout optimization, adapt to market changes and adjust product structure, control oil refining but increase chemical engineering, improve product quality and production efficiency, and constantly promote the international competitiveness of the Chinese petrochemical industry.

Economy Equilibrium and Sustainable Development

The structure of technological mappings is studied and it is shown that for an important class of technological mappings there exists a continuous strategy of the behavior of firms as arbitrarily close in terms of profit. The latter is important for building the theory of economic equilibrium, which is an important tool for building the theory of sustainable economic development. Theorems of the existence of economic equilibrium under conditions of uncertainty and under general assumptions about the structure of supply and demand have been proved.

我国肉鸡饲料价格波动特征及影响因素分析

文章旨在分析肉鸡价格波动特征及影响因素,有利于推动禽类养殖业健康稳定发展。基于2002年1月-2022年12月我国252个肉鸡饲料企业样本数据,在通过平稳性检验后,采用VAR模型和方差分解法,从肉鸡饲料价格、供给和需求方面分析引起我国肉鸡饲料价格波动的主要因素。结果显示,在供给层面,肉鸡饲料价格波动的主要影响因素为玉米存量和豆粕存量,第7期玉米存量和豆粕存量对当月肉鸡饲料价格的影响占比分别是30.78%和20.39%。在需求层面,在第7期农村居民人均可支配收入和可繁殖母鸡存栏量对肉鸡饲料价格的影响占比较高,分别为9.06%和6.87%。研究表明,肉鸡饲料价格波动受肉鸡饲料自身价格影响程度最大,随后依次为玉米存量、豆粕存量、农村居民人均可支配收入、可繁殖母鸡存栏量、鱼虾肉价格、肉鸡存栏量、牛肉价格和城镇居民人均可支配收入。

以有效需求牵引供给以高水平供给创造需求——学习习近平宏观经济治理供求关系良性互动的论述

学习和领会习近平宏观经济治理思想尤其是关于供求关系良性互动的论述,有助于梳理我国宏观经济治理与宏观调控政策的发展脉络,进一步深化认识和自觉遵循新时代客观经济规律,对于加快构建新发展格局和实现高质量发展具有非常重要的理论与实践意义。面对经济发展有效需求不足等失衡特点,“深化供给侧结构性改革和扩大有效需求协同发力”已成为新时代做好经济工作需要认识和遵循的重要规律。当前实现需求与供给两端协同发力,在政策目标和政策导向上必须追求以有效需求牵引供给、以高水平供给创造需求,还要从政策制定和传导机制、治理机制和体制基础等方面持续发力以切实提升宏观经济治理和政策调控的有效性。

基于时序Sentinel-2影像的引黄灌区作物结构提取和供需水分析

在黄河流域用水指标严格控制的背景下,以山东省东营市垦利区引黄灌区为例,利用2022年时序Sentinel-2遥感影像构建作物生育期的NDVI时间序列,采用决策树分类方法提取灌区作物种植结构,基于垦利站气象资料和Penman-Monteith公式,分析了1973—2022年各作物的需水特性,利用遥感影像解译的各作物种植面积,计算了2022年灌区作物在不同降水保证率(5%、25%、50%、75%、95%)条件下的灌溉总需水量,结合2023年分配给灌区作物的灌溉水指标探究了灌溉水资源供需之间的平衡。结果表明:基于NDVI时间序列构建决策树分类方法可有效提取作物的种植结构,总体分类精度为85.07%,Kappa系数为0.819,能够满足作物灌溉需水量的研究。作物净灌溉需水量年际波动较大,水稻和冬小麦补充灌溉水量在所有作物中位列前两位,均值分别为913 mm和410 mm;处于雨季生长的夏玉米、夏大豆补充灌溉水量较小且灌溉需求均值较小。研究区2023年分配的灌溉水指标在降水保证率为50%时研究区灌溉水亏缺量为235.5万m^(3),在降水保证率为75%和95%时灌溉水亏缺量分别为1 754.5万m^(3)和2 261.5万m^(3)。

绿色基础设施供需适配关系演进特征及其规律--以南京市为例

绿色基础设施(GI)供需均衡对维护城市或区域生态系统稳定,提升国土空间治理体系和治理能力现代化水平,推动城市高质量发展具有重要意义。从绿色基础设施供需适配关系的视角出发,运用生态系统服务价值法对GI服务供给进行测度,从社会、经济、生态和环境四方面综合评价GI需求,研究南京市GI供需适配关系的演进情势,揭示其时空配置的差异性。结果表明:(1)2000—2020年,南京市GI供给呈主城低、郊区高的分布格局,总供给、人均供给和单项供给均先减后增。(2)GI总需求逐年减少,形成从中心城区向郊区递减的三个圈层。(3)南京市共划出9个供需适配类型,对应11个辖区划出99个供需适配类型组合区,供需适配较好区与较差区分别占全市国土面积的26%和44%,呈不均衡分布。(4)主城区较适应的匹配类型是低供给-中需求,郊区维持低供给-低需求较符合区域发展实际,并针对不同类型区优化提升提出对策建议。

基于多源数据的重庆中心城区绿地生态系统文化服务供需关系研究

快速城市化及城市扩张过程中,城市绿地生态系统文化服务(CES)供给与公众需求空间失衡问题日益凸显。如何有效识别城市绿地文化服务供需空间匹配特征是优化绿地空间布局、提升绿地服务效率的关键所在。本研究以重庆市中心城区为研究范围,基于地理空间数据等多源数据,运用GIS分析技术、空间相关性分析等方法,构建了城市绿地文化服务供需评价指标体系和分析框架,识别了山地城市绿地文化服务供给与居民需求的空间匹配类型。研究发现CES供给具明显的空间聚集性,全局莫兰指数为0.720,呈现为“大核—次核—小核”的分布形态,CES需求全局莫兰指数为0.834,呈现中心高外围低、西高东低的空间格局,双变量自相关分析显示供给与需求之间存在空间结构相似性,CES供需关系整体上较好,但一些关键区域匹配失衡压力较大。根据供需平衡关系特征,将研究区识别为六类空间类型,并对每种类型提出了CES优化提升路径。研究结果可为山地城市绿地生态系统文化服务优化路径提供理论支撑与实践借鉴。

低出生率背景下省域学前教育资源供需关系与动态调配——基于对中部J省人口预测的分析

低出生率背景下研判省域学前教育资源供需关系的变化,对优化学前教育资源配置、实现学前教育优质均衡发展具有指导意义。本研究选择省域学前教育资源配置中低供给高需求类型的中部J省作为研究对象,运用PADIS-INT软件预测分析了J省2023—2035年低、中、高三种方案下城乡在园幼儿人数的变化,调查了J省学前教育人力资源与物力资源供给现状,进而预测分析了J省学前教育资源在供给动态变化与静态不变情况下的供需关系。结果发现,随着在园幼儿人数减少,学前教育资源需求将明显减少;现有人力资源供给存在结构性短缺,未来会出现城乡配置失衡;物力资源配备已达到高水平,未来会严重过剩。根据研究结果,建议地方政府根据资源供需关系的动态变化做好学前教育长期规划,控增量、调存量、疏余量;从结构与质量入手优化人力资源配置,稳定乡村教师队伍;谨慎增加办园条件投入,采用多种形式提升物力资源使用效益。

有效资本存量、供需匹配与中国经济稳定增长

在中国高质量发展不断深化的背景下,有效投资通过优化供给结构可实现供给和需求的进一步匹配,进而克服中国现阶段有效供给不足的问题。本文以不同产业资本效率为权重构建了中国有效资本存量指标体系,相比于以往研究,从理论方面对简单加总的资本存量进行了改进。同时,通过结合不同产业的投资效率以及资本占比得出中国投资结构面临的问题。研究发现:中国投资结构面临的问题是低投资效率的产业获得高份额的投资以及高投资效率的产业没有获得足够的投资份额,进而导致中国有效供给不足和内循环不通畅。因此,需要通过增加有效投资来盘活存量资本和优化供给结构,确保实现经济的稳定增长。

我国出版公共服务社会化探索

基于对出版公共服务的供需主体、价值关系、对接关系的分析,本文提出建立主体之间的协同关系,形成出版公共服务多元治理结构、完善出版公共服务合作供给模式,推动政府主导与市场化运作相结合、健全出版公共服务社会化保障机制,促进供需关系的良好运转等具体路径,以实现我国出版公共服务社会化探索。

改革开放以来我国公共体育服务供给模式演变图景、现实境遇和纾解路径

提高公共体育服务供给能力是体育强国建设的任务之一。改革开放后,我国公共体育服务供给历经政府单一主导阶段、政府与市场合作探索阶段和多元主体协同发展探索阶段。在发展中存在供给主体间协同机制不健全、供给效率低效、精准化程度不足等问题。为此,应促进公共体育服务社会化,完善多元化供给模式;丰富供给内容,提升供给效率;加强全局谋划,提升供给精准化水平。

中国式产能过剩:历史考察及对新发展阶段治理的启示

改革开放以来,我国经历了四轮较为明显的产能过剩:20世纪90年代的消费品过剩阶段、2003—2007年的部分工业品过剩阶段、2011—2015年的产能过剩全面加剧阶段、2016—2020年的重点行业治理取得阶段性成果阶段,各阶段产能过剩的背景、表现、治理措施及效果不尽相同。历史考察发现,中国式产能过剩具有以下特征:产能过剩跟经济波动密切关联、产能过剩问题反复出现、产能过剩与落后产能问题并存、产能过剩形成机制深刻复杂。在新发展阶段,治理产能过剩问题既要推动存量过剩产能退出,更要从根本上构建预防过剩产能反复的长效机制,建议重点关注以下工作:完善市场化法治化机制,构建过剩产能高效退出机制;推动政府治理机制改革,探索政府与市场结合新模式;加快科技自主创新,推动供需结构匹配;加快构建“管资本”国有资产监管体制,重点推动国有企业产能利用率提升。

辽宁省智慧养老产业发展创新路径研究

智慧养老产业在发展过程中,已经形成以养老需求为核心,带动养老服务供给结构优化的新型发展模式。老年人养老需求的满足程度以及对智慧养老服务手段的接受程度会直接影响其接受智慧养老服务的综合意愿。因此,以满足老年人的多元养老需求为目标,发挥智慧养老产品和养老服务的集成优势,是推动智慧养老产业创新发展的重要途径。基于此,本文结合社会认知理论、嵌入式理论以及供需平衡理论等多重视角,系统分析辽宁省智慧养老产业的发展现状,并指出推动辽宁省智慧养老产业的创新升级,需要综合考虑智慧养老产业供给侧环境和服务设施建设情况以及需求侧老年群体养老行为偏好,实现菜单式供给和精准式需求的完美结合,共同推进智慧养老产业建设和高质量发展,以提升辽宁省老年人的养老幸福指数。

持续推动经济回升向好需要科学处理几方面重要关系

2023年我国经济在总体上呈现回升向好态势。“经济回升向好”是2023年12月召开的中央经济工作会议的重要关键词。但要持续推动我国经济回升向好,需要科学处理实现经济质的有效提升和量的合理增长、坚持高质量发展和实现高水平安全之间、扩大内需和深化供给侧结构性改革之间的关系,并就今后如何科学处理三方面的关系进行了探讨。必须把坚持高质量发展作为新时代的硬道理,努力营造高质量发展和高水平安全相互成就的发展格局,把扩大内需同深化供给侧结构性改革结合起来。