GIS-based Decision Support System for Wood Logistics

来源 :Forestry Studies in China | 被引量 : 0次 | 上传用户:q137301947
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
A wood logistics system was combined with a linear programming (LP) method utilizing GIS-based techniques on the platform of GIS software-ARC/INFO. The combined costs of road and off-road transport were taken as the objective function to find the least cost route and the optimal landing locations of wood transportation. Then transport costs and allowable wood volume of stands were calculated. An LP model was developed to allocate timber resources among mills in order to minimize the wood logistics costs from harvesting sites to mills. The parameters of the LP model, including the transport costs, allowable wood volume and wood orders, were written into a text file in MPS format which were then accessed by LINDO to solve the LP problem. The system is an effective tool to manage logistics, information and funds together in order to increase the speed of wood logistics and reduce the cost. The benefits and efficiency of mill cluster can be improved. The focal firm in the cluster can be competitive. The combined costs of road and off-road transport were taken as the objective function to find the least cost route and the optimal landing locations of wood transportation. Then transport costs and allowable wood volume of stands were calculated. An LP model was developed to allocate timber resources among mills in order to minimize the wood logistics costs from harvesting sites to mills. The parameters of the LP model, including the transport costs, allowable wood volume and wood orders, were written into a text file in MPS format which were then accessed by LINDO to solve the LP problem. The system is an effective tool to manage logistics, information and The funds and in the order to increase the speed of wood logistics and reduce the cost. The benefits and efficiency of mill cluster can be improved. The focal firm in the cluster can be co mpetitive.
其他文献
旅游业作为第三产业的代表性行业已经成为如今社会的主要经济发展支柱,旅游亦愈发呈现大众化趋势,追求不同和新奇成为旅游业的发展趋势。我国悠久的历史和多民族共存的发展经
Chirped fiber Bragg gratings have found many applications in optical communication and sensing systems. High quality filters based on chirped fiber Bragg gratin
看着女儿浩琦渐渐长大,在我面前嘻笑打闹,幸福油然而生,特有成就感。因自幼好弈,为女儿取名顺应“好棋”之谐音,希望女儿快乐健康的成长,下好人生这盘棋,做一个有益于人民的
这是一个供读者自由发挥的舞台,请将你在平时观棋、下棋或打谱过程中的心得体会加以整理,与广大棋友共同分享。本栏目的题材涉及布局研究、胜和残棋、精彩杀着和中局妙手四大
在F1赛车比赛中。赛道起到的作用无法估量。它既可以令籍籍无名的选手功成名就,也可以成为名将的滑铁卢。谁是F1赛道中的武林盟主?究竟是比出身还是比卖相?是看哪条赛道成就
一、艾滋病(AIDS)疫情报告情况截至2015年8月31日,全国报告现存活艾滋病病毒(HIV)感染者/AIDS病人561 807例,报告死亡173 180例。现存活HIV感染者333 944例,AIDS病人227 863
本文介绍一种在单位燃耗最少的前提下能够用来确定炉温的优化模型。 符号表 α——热扩散率(导温系数),m~1s~(-1) A——表面积,m~2 B_i——毕奥数(=h_bd/4kb) C——比热,Jkg
欧洲篮球正在试图向NBA的霸主地位发起挑战,而在这些挑战之中,2008年欧洲篮球锦标赛新科状元——莫斯科中央陆军(CSKA),被公认为NBA之外全世界最好的篮球俱乐部……6次欧洲冠
铕的氧化还原滴定法,通常使用锌汞齐或液态锌汞齐还原;然后将还原成二价的铕吸收于过量碘液,用硫代硫酸钠滴定,或吸收于过量三氯化铁,用重铬酸钾滴定被铕还原出来的亚铁。也
此机床经使用发现存在以下问题:首先是立柱夹紧机构不灵活。其原因:1)原设计立柱夹紧机构的偏心轴偏心量不够大。从理论上计算得1.25 mm的偏心量能使夹紧圈直径有0.79 mm(在