论行政优益权

由于没有统一的成文行政合同法的规制，对于行政主体在行政合同中的优益权，学者们对其内涵和外延的界定一直争论不休且观点差异很大。本文正是围绕这一问题而展开。详细论述了行政优益权的含义、特点以及行使的条件等基本问题，以期对未来我国行政合同法的制定起到抛砖引玉的作用。     

深化草业经济体制改革实行草原有偿承包制度

实行草原有偿承包制度,是草业经济体制改革的重要突破。本文在总结草原有偿承包制度产生与发展过程的基础上,阐明草原有偿承包制度的基本内容,阐述了建立草原有偿承包制度之理论、法律、现实和实践根据及其在草地畜牧业经济建设中的重大意义。     

试论国营林场承包责任制的建立与健全

本文介绍漳州市二十个国营林场在育苗、造林、森林管护、木材生产、 汽车运输、果树等农副业、工业和商业以及职能部门等方面所采取的承包责任制的做法。 通过实行多种形式的承包责任制,给林场经营增添了活力,解放了生产力,促进了林业生产。其优越性表现:1、充分调动了职工的劳动积极性。2、生产质量大有提高。3、有利于保护森林资源。4、推动产业结构合理调整。     

The influence of physical watercourse parameters on the degree of anadromy in different lake populations of Arctic charr (Salvelinus alpinus (L.)) in northern Norway

The influence of physical watercourse parameters on the degree of anadromy was studied in 15 lake populations of Arctic charr (Salvelinus alpinus (L.)) in northern Norway. The anadromy of the different populations was scored based on the following criteria; marine parasites. fish length and length at maturity. There were significant negative correlations between the anadromy scores and both the length of the outlet rivers of the different lakes and a migration barrier index for the different watercourses (combining migration distance and water velocity). It is hypothsized that these correlations were due to differences in energy expenditure for charr during upstream migration and/or differences in predation pressure on charr during river migration. Short rivers with relatively high water velocity seem to be the most preferable conditions for the anadromous life-history strategy. There were no correlations between the degree of anadromy and mean river slope or minimum summer water discharge.     

耕地承包制度与新集体林权制度改革的比较研究——以福建为例

通过比较耕地承包制度与新集体林权制度改革的过程及绩效,包括经济绩效和社会绩效,探讨两种制度改革的优缺点,以便在将来的改革中相互借鉴。耕地承包制度改革的经验证明,两种制度的改革都要兼顾公平与效率,减少改革过程中的矛盾和阻力,特别是现在进行的新集体林权改革,注重公平是非常重要的。     

人力资本专用性视角下的农村池塘闲置研究

对某县域地区池塘资源进行了详尽的调查研究,并利用不完全契约理论的相关模型框架对池塘资源闲置进行了经济学分析。结果表明,随着市场经济日益深化,不完全契约下的人力资本专用性扭曲了对池塘治理的投资激励,需要进行相应的制度安排来治理池塘闲置问题。     

我国农业经济组织“公司＋农户”模式问题缺陷分析

“公司＋农户”模式是我国主要的农业经济组织形式,本文对”公司＋农户”模式的缺陷从契约的角度进行了研究。其中,契约角度的分析从契约的不稳定性、契约的利益联结机制的不完备、准租金的挤占问题等方面进行展开。     

Stochastic simulation of forest fuel sourcing models under risk

Abstract

Climate change effects such as storms and droughts are leading to increased risk of forest damage in central Europe. The aim of this paper was to evaluate forest fuel sourcing models including climate change-induced risks on forest fuel supply. Stochastic risk events, such as storms and bark beetle infestations, were modelled by means of a Monte Carlo simulation, and the economic performance was evaluated for two fuel-sourcing models supplying a single combined heat and power plant (CHP). The first sourcing model depicted a common sourcing model for Austrian CHPs, where only forest chips provided by long- and short-term suppliers were stored. The second sourcing model additionally enabled the storage of salvaged pulpwood to supply forest fuel from the plant's own inventory during shortage periods. Simulation results showed that storing salvage pulpwood as feedstock considerably reduced supply chain risks and resulted in lower procurement costs (1–3% less than normal delivered cost without storing salvaged pulpwood).