基于网络结构和信息传播的节点重要性识别方法

节点重要性评估是复杂网络研究的重要问题，对研究复杂网络的脆弱性和鲁棒性具有重要意义。通过考虑网络拓扑结构和信息传播，对局部网络间的拓扑结构进行量化，提出一种考虑节点度以及邻居节点的结构相似性的节点重要度评估LSC算法。基于6个经典实际网络和两个人工网络，以蓄意破坏的方式对网络进行攻击，通过极大联通系数、网络效率和网络节点单调性3个评估指标的实验结果对比，证明所提算法LSC相比于其他已有算法更能准确地评估网络节点的重要性。     

基于引力模型的中国双边贸易流量研究

贸易引力模型是基于牛顿的万有引力定律提出的,被广泛用于研究两国(地区)双边贸易的经济模型.文章在Anderson & Wincoop(2003)年所建立的引力模型的基础上,选取与中国进行贸易的20个主要贸易伙伴2007年的截面数据,分析了中国与这些国家的贸易流量(出口流量)以及中国的贸易潜力并得出相关结论.     

基于区块链技术的医药供应链信息共享行为博弈研究

信息不对称是阻碍供应链整体效率的主要因素。针对医药供应链缺乏信任的问题，建立医药供应链各节点信息共享演化博弈模型，分析各因素对博弈三方策略选择的影响并使用MATLAB进行仿真验证。研究表明，区块链技术有利于降低信息共享的成本和风险，建立科学合理的奖惩制度，且信息共享激励系数和惩罚系数正向影响医药供应链信息共享策略,信息共享成本和风险系数负向影响信息共享策略。基于研究结论，为提高医药供应链信息共享水平提出对策建议。     

“一带一路”节点城市经济联系测算研究

文章以"一带一路"中国段34个节点城市为研究对象,利用引力模型对"一带一路"中国段节点城市经济联系进行测算。结果表明:节点城市的经济联系网络组织关系复杂,经济发展尚处在初期节点,发达城市和经济带枢纽城市核心带动作用不突出;经济带节点城市的区域经济联系差异性明显,城市间经济发展不均衡,经济联系密度呈现由东向西发散状,且随距离衰减;经济联系网络呈现多核心的经济网络结构,西部城市经济联系贫乏。     

基于中国东盟货运航线数据的网络结构与鲁棒性

利用复杂网络理论,深入分析中国东盟航空货运网络的鲁棒性。通过构建网络模型,分析网络拓扑结构,识别关键节点,以最大连通子图相对大小、网络效率和平均路径长度为衡量指标进行鲁棒性分析。结果显示,网络在随机攻击模式下的鲁棒性优于蓄意攻击。因此,应对关键节点进行保护,防止其遭受攻击。这些发现对理解和改进网络稳定性和鲁棒性具有重要意义,同时为提升网络效率和可靠性提供了支持。     

基于麻雀搜索算法的电力物资绿色供应链协调优化方法

为保证电力市场中相关企业的稳定、合理收益，引进麻雀搜索算法，对电力物资绿色供应链的协调优化方法展开设计研究。建立电力物资三级绿色供应链模型，对绿色供应链中参与方、关键节点之间的关系进行分析。根据麻雀所具有的群居特性，对群居行为进行仿真优化，以此为依据，实现绿色供应链中局部需求的检索更新。根据绿色供应链中电网企业的需求，将三级参与方最大利润系数作为目标，采用建立目标函数的方式，实现对集中型绿色供应链的协调决策。实验结果表明，按照规范使用的方法进行电力物资绿色供应链协调优化，可以有效控制电力物资供应成本，以此种方式确保供应链中电力企业的稳定收益与持续化盈利。     

基于引力模型的中国出口流量国别分布影响因素研究

本文基于1997-2008年中国对25个主要贸易伙伴出口额等293个面板数据样本建立了贸易引力模型,并通过对比筛选出了两国GDP等9个影响中国出口流量国别分布的主要因素,研究发现不同因素不同程度、不同方向地影响着中国出口流量的国别分布。     

基于节点环的物流网格配送方法

为解决网格之间的物流配送问题,研究了有容量节点在物流配送中的调节作用,提出使用带扩展的有节点环流的NIO网络流模型。首先扩展网络节点,节点由入点、出点、中转弧和节点环组成;接着根据NIO网络模型特点,改进了流量守恒约束条件,给出了控制网络流的弧容量配平算法;最后对配平后的网络使用最大流算法,生成网格间的物流分配优化方案。计算得出物流通过节点环流调配后的增强效果。     

多供应链间同级与非同级混合的多级双向跨链库存协作

以两条由制造商、批发商和零售商组成的三级供应链为研究对象,运用系统动力学方法建立产业集群中供应链竞合环境下制造商、批发商和零售商各级节点企业跨链间同级与非同级混合的库存应急互补模型;将文章所提出的跨链间库存应急互补模型与目前已有的同类模型进行对比分析,通过系统动力学仿真软件Vensim对模型进行仿真,验证了文章所提出的跨链间库存应急互补模型相对于该领域已有的理论研究成果有了更进一步的提高.文章在理论的角度上将集群式供应链跨链间库存协作的研究向前推进了一步,同时也为产业集群中各节点企业之间库存应急互补的实践提供了一些决策依据及启示.     

用引力模型分析中国对外直接投资的区位选择

本文选取对中国进行直接投资的 32个国家 (地区 )为样本 ,把这些样本国的经济规模、人均国民收入与中国的地理距离等变量纳入引力模型 ,分析国家之间的国际直接投资流量与经济变量之间存在的相关关系 ,并揭示国际直接投资区位分布的规律。结果表明 ,投资国与东道国的经济规模总和、人均国民收入水平及双边贸易量与两国间的国际直接投资流量呈正相关 ,投资国与东道国的经济规模和经济水平越相似 ,两国之间的国际直接投资流量越大。这一结论在一定程度上解释了国际直接投资水平流动的趋势。投资国与东道国的距离与国际直接流量和区位分布呈显著负相关 ,这表明地理位置是影响国际直接投资流向和分布的重要因素。本文通过引力模型求出样本国家与中国国际直接投资的引力系数 ,并用引力系数就中国对外直接投资的区位选择进行分析。     

Penetration and Post-infection Development of Meloidogyne Incognita on Tobacco as Treated by Rhizobacteria Pseudomonas Fluorescens Strain P-72-10

The bio-control potential of rhizospere bacteria Pseudomonas fluorescens against plant-parasite nematode had been demonstrated. P. fluorescens had shown the effect to enhance tobacco resistance to root-knot nematode Meloidogyne incognita. Inoculation with P. fluoreseens in tobacco could lead to significant reductions in the number of juveniles that penetrated tobacco root and further life stage development of the juveniles. The number of juveniles penetrated into tobac- co root in treatment with P. fluorescens is significantly different from CK at 2DAI, 6DAI, 8DAI and 10DAI. Significant reduction and delayed development of juveniles that penetrated into tobacco root and treated were observed in treatment at 14DAI, 21DAI, 28DAI and 35DAI. In addition, P. fluoreseens treatment leads to a significant reduction in the number of eggs per egg-mass at 35 DAI. The results show P. fluorescens induced a continuously suppression on root-knot nema- tode M. incognita throughout their entire early infection phase of root penetration, subsequent life stage development and reproduction.     

For Better or for Worse? Local Impacts of the Decentralization of Indonesia’s Forest Sector

This paper quantifies the local impacts of mechanized logging on forest-dependent communities in Indonesia, before and after decentralization. A conceptual framework incorporates financial, social, enforcement, rent-seeking, and environmental impacts. Using data from 60 communities in East Kalimantan, the empirical results suggest that significantly more households received financial and in-kind benefits after decentralization compared to before. Many communities engaged in self-enforcement activities against firms both before and after decentralization. Post-decentralization, a significantly higher proportion of households perceived community forest ownership. There were few significant differences in perceived environmental impacts. Little evidence exists of a post-decentralization trade-off between environmental and financial contractual provisions.     

以资本管理为核心的银行治理综合评价指标研究

商业银行的特殊性体现在风险性、外部性和多重治理目标上,尤其集中体现在风险管理的本质上。风险管理日益成为现代商业银行的主体活动和核心职能,资本管理成为现代商业银行风险管理的核心。在整合EVA和RAROC指标的基础上。文章构建了以资本管理为核心的银行治理的综合评价指标,以求真实反映银行经营的成果,有效衡量风险收益和风险成本的对比关系,从而反映以资本管理为核心的银行风险管理的过程、能力和效率。     

Markteintrittstiming von Telekommunikationsdiensteanbietern

Zusammenfassung Die vorliegende Studie analysiert für 87 Neuprodukteinführungen (NPE) und Auslandsmarkteintritte (AME) von Telekommunikations(TK)-Diensteanbietern in Deutschland, zu denen 42 Schlüsselinformanten in einer schriftlichen Befragung Auskunft gaben, (1) inwieweit deren zeitliche Eintrittspositionierung durch Marktcharakteristika und Unternehmensressourcen erkl?rbar ist sowie (2) inwieweit und gegebenenfalls unter welchen unternehmensexternen und -internen Situationsbedingungen deren Markteintrittstiming mit dem wahrgenommenen Eintrittserfolg assoziiert ist. Ein früher Markteintritt wurde dann realisiert, wenn die Wettbewerbsintensit?t im adressierten Gesch?ft niedrig und das Budget für den Expansionsschritt überdurchschnittlich ausfielen. Zwischen dem Markteintrittstiming und der Beurteilung des Eintrittserfolgs bestand ein nicht monotoner, umgekehrt U-f?rmiger Zusammenhang: Frühe Folger wiesen signifikant bessere Erfolgswerte auf als Pioniere und sp?te Folger, deren Erfolgsniveaus nicht signifikant divergierten. In einer Industrie, die durch starke externe Netzeffekte gepr?gt ist, fallen offenbar die Nachteile eines Markteintritts als Pionier oder sp?ter Folger st?rker ins Gewicht als die Vorteile dieser beiden zeitlichen Eintrittspositionierungen. Unabh?ngig vom Markteintrittstiming wurden NPE/AME von TK-Unternehmen als erfolgreicher eingestuft, wenn sie sich in einen Markt mit stark wachsender Nachfrage und aufeinander abgestimmt (re)agierenden Wettbewerbern mit qualitativ überdurchschnittlichen, abw?rtskompatiblen, erprobbaren und wenig erkl?rungsbedürftigen TK-Diensten engagierten.      

利用膜技术回收利用碱性废水研究进展

回顾了利用膜分离技术处理碱性废水的工艺与综合利用技术所取得的丰硕成果，总结了各种治理方法的特点、适用性及发展方向。     

Taxing Times in Indonesia: The Challenge of Restoring Competitiveness and the Search for Fiscal Space

Indonesia’s economic growth picked up slightly in mid-2016 but remains below the level demanded by government and popular aspirations. Despite a plethora of reforms intended to increase efficiency and productivity, some policies are perverse and longstanding problems of implementation remain. The share of manufacturing has declined, the real exchange rate has appreciated, exports have dwindled, and growth has been trending downwards. The banking sector is stable but inefficient, with wide net interest margins and numerous barriers to competition. Trade protection, particularly in basic food commodities, has created high costs that weigh particularly heavily on the poor. Declining government revenues have placed increasing pressure on the public budget, even as the current administration aims to increase spending on infrastructure and welfare and to enhance productivity. In an effort to increase revenues, the government has announced a tax amnesty program and other measures. In addition, Sri Mulyani Indrawati, the new finance minister, has taken steps to cut non-essential expenditure in order to secure high spending on infrastructure and at the same time keep within the 3% budget deficit limit stipulated by law. Although the overall debt situation is not yet alarming, declining revenues and budget cuts that do not fully reflect this decline are putting pressure on increasing debt levels. The government’s high-profile tax amnesty program was the major policy initiative implemented in the second half of 2016 that aimed to relieve this pressure. Despite widespread criticism of, and scepticism about, the tax amnesty (both within and outside Indonesia), its first phase had a much higher participation rate than most independent accounts expected. Revenues raised so far through the amnesty are less than 60% of the official target, but this is actually a strong result for the short term. The bigger question, however, is whether the amnesty is a key element of a more encompassing strategy to overhaul the system of taxation and tax administration.     

The causes of Japan's ‘lost decade’: The role of household consumption

In this paper, I analyze the causes of the prolonged slowdown of the Japanese economy in the 1990s and find that the stagnation of investment, especially private fixed investment, was the primary culprit. I then investigate the causes of the stagnation of household consumption during the 1990s and find that the stagnation of household disposable income, the decline in household wealth, and increased uncertainty about the future are among the contributing factors. Finally, I consider whether demand side factors or supply side factors were more important as causes of the prolonged slowdown of the Japanese economy in the 1990s and conclude that the former (especially misguided government policies) were probably more important.