关键词： 运输经济模型   物流运输   降本方式   降本增效   成本控制  

摘要： 现阶段,物流运输是整个物流过程中非常重要的部分,并且物流运输的整体费用占整个物流费用的 50% ,甚至更多, 物流运输是“物流第三利益”非常重要的内容.因此,合理使用相关模型对物流运输成本进行严格控制,结合运输货物的实 际情况,合理选择物流运输路线及货物运输方式,尽可能选择运输时间最少、运输路径最短、运输速度最快的路线及方式,在 货物运输过程中做好相应的保护工作,并合理组织货物的配送,才能更好地提高物流运输的经济效益.鉴于此,本文对运输 经济模型下的物流运输降本方式进行了相关论述.

关键词： 中国计算机学会   区块链技术   分布式系统   TC35   智能技术   经济模型   密码学   数据管理与分析  

摘要： 由中国计算机学会主办,中国计算机学会区块链专业委员会承办,中科云海智能技术实验室协办的2022 CCF中国区块链技术大会(CCF CBCC 2022,会议编号:CCF-2021-TC35-01Np)拟将于2022年9月23-25日举行。大会将邀请国内外区块链行业领域的院士专家、全国高校、产业界、金融机构以及政府领导等与会共同交流。会议将集中讨论区块链在分布式系统、密码学、数据管理与分析、经济模型、监管科技和元宇宙等领域的前沿技术.

关键词： Agronomy   Artificial Intelligence   Crop Diversification   Hydro-economics   Optimisation  

摘要： Neoteric phenomena such as climate change, scarce water availability and excessive fertilizer usage necessitate an augmentation of resource utilisation efficiencies in the agricultural sector. There is a need to reorient the agroecosystems to curb stress on environmental resources while meeting rising socio-economic objectives under changing hydro-climatic conditions. Considering this, optimal land allocation for diversified agriculture is essential. We propose a combinatorial optimisation approach for land allocation considering agronomic, socio-economic, environmental and hydro-climatic objectives using bio-inspired optimization algorithms. The sto-chastic approach tackles the problem of optimal agricultural land allocation for crops in a multidimensional context by simultaneously addressing the conflicting goals of farm-level risk management as well as district-level contingency planning. The efficiencies and sensitivity of the proposed framework are assessed through a case study of the Dharwad district in Karnataka, India using the data (water and fertilizer consumption and cost, crop type, cultivable land, man and machine hours, etc.) from the year 2019-2020. Results indicate that Multi-objective Genetic Algorithm (MOGA) is more capable of optimising agricultural resources management by suggesting optimal land allocation for diversified crop planning. Although Cuckoo Search (CS) and Particle Search Optimisation (PSO) also produced productive Pareto fronts, they were observed to be less effective than MOGA. The annual increase in profits and crop yield obtained using MOGA are 103% and 97% respectively, while water usage is reduced by 5% compared to the conventional routines in Dharwad. The proposed hydro-agronomic decision support framework (DSF) can be utilised to assist the AI-enabled crop planning process for the sustainable management of agroecosystems.

关键词： 卫生投入   居民健康水平   经济增长  

摘要： 使用单位根检验与协整理论分析了我国卫生投入、居民健康水平和经济增长之间的关系。采用预期寿命、新生儿死亡率和平均受教育年限作为我国居民健康水平的代理变量,分析它与我国GDP增长之间的关系并得到了相应的回归模型。基于2014年全国31个省区市的地区生产总值、年末从业人员数与卫生投入的数据,对我国区域卫生投入进行了统计检验,实证分析了区域卫生投入对其经济增长的贡献。发现卫生投入对于提高当地经济增长有显著效果且具有明显的区域特征。内生经济增长模型回归结果显示,卫生投入的增多,能促进居民健康水平的提高,进而促进经济增长。

关键词： 工业污染   经济增长   多元回归   环境库兹捏茨曲线  

摘要： 在国家碳达峰、碳中和目标的指引下,经济社会高质量发展迎来重要发展机遇期,同时也面临一定挑战。从工业视角、构建环境污染与经济发展关系多元回归模型,验证环境库兹捏茨曲线假设,探索工业污染演变趋势,提出双碳背景下工业高质量发展相关建议。

关键词： 露天矿山   境界优化   块净值   函数关系  

摘要： 在实际生产中,露天矿山技术经济模型往往具有一定的复杂性。为此,提出一种先利用函数关系计算矿体模型块净值的方式构建精细的矿体经济模型,再通过L-G图法进行境界优化,从而更好地贴合实际,指导露天矿山设计与生产。该方法可基于复杂技术经济模型实现矿体的经济价值三维可视化,在露天境界设计及生产领域具有一定的推广价值。

关键词： 经济模式   物流运输   降本方法  

摘要： 随着我国社会不断发展,物流运输业也越来越完善。当前来看,物流运输占整个物流费用的50%,是费用占比最高的环节。物流运输属于“物流第三利益”中非常重要的内容。因此,在开展物流管理工作时,想要实现对物流成本的有效管控,应该结合当前实际情况,选择规范的物流路线以及运输方式,尽可能缩减运输时间。基于此,本文尝试对基于运输经济模型的物流运输降本方法进行了分析。

关键词： cost-savings   debridement   infection   wound   wound closure techniques   wound healing  

摘要： An economic model was developed to estimate the cost of negative pressure wound therapy with instillation and dwelling of a topical wound solution vs control therapies. Economic model inputs were means derived from the results of a recently published systematic review and meta-analysis of 13 comparative studies of negative pressure wound therapy with instillation. Means across studies comprising complex acute and chronic wounds for negative pressure wound therapy-instillation vs control (negative pressure wound therapy without instillation, gauze dressings, or gentamicin polymethylmethacrylate beads) groups were 1.77 vs 2.69 operating room visits (P = .008) and 9.88 vs 21.80 therapy days (P = .02), respectively. These inputs plus hospital cost data were used to model costs for the United States, Germany, and the United Kingdom. For the United States, Germany, and United Kingdom, respectively, economic model estimates of total potential per patient savings were $33 338, euro8467, and 5626 pound for negative pressure wound therapy-instillation group vs control, based on assumed number of OR visits during therapy, cost of therapy system, and length of therapy. Model results showed an overall potential cost-savings with negative pressure wound therapy-instillation vs control, based on fewer OR visits and shorter therapy duration as reported in the published systematic review and meta-analysis.

关键词： 半参数回归模型   样条估计   通货膨胀   模拟抽样模型  

摘要： 半参数回归模型结合了非参数回归和线性参数回归各自的优点,可用于曲线和数据的拟合和预测。 文章将介绍半参数回归及其在金融经济模型中的应用,通过列举不同类型的例子进行拟合,并说明了为什么半参数回归是更有效的。