从工程变更索赔的案例谈工程变更索赔方法

建设工程项目的变更索赔一直是工程项目二次经营的核心内容。通过代表性工程项目实例,介绍工程变更索赔的方法。希望有类似建设工程项目的承包商能从实例中得到启发,使工程项目获取利润,减少损失。     

浅谈项目管理与成本控制

项目管理和成本控制是一门复杂且综合性很强的科学,项目管理的好坏对成本产生直接的影响。文章主要从施工过程、材料、变更索赔、非生产性开支等方面,分析了项目管理与成本控制间的关系,提出了相关成本控制措施。     

高等级公路建设中工程变更及费用索赔监理

就在高等级公路建设中,如何操作工程变更及费用索赔监理的问题进行了探讨.     

沿海航道工程建设管理中的索赔防范问题分析

为确保投资的合理性,控制好工程变更,尽可能减少工程投资的增加。文章针对沿海航道工程的特点,分析了沿海航道工程建设过程中常见的工程造价索赔问题,并提出了在工程建设管理中做好索赔防范工作的相关措施。     

浅谈FIDIC条款合同管理中的合同变更与索赔

本文结合京珠高速公路合同管理，就合同管理中合同变更与索赔工作程序和方法进行了探讨和介绍。     

谈企业低价中标后的对策

施工企业在低价中标的现状中合理运用投标技巧、成本管理、合同变更索赔工作等方法以减少低价中标带来的不利因素.     

浅谈对建设工程项目索赔管理的认识

工程索赔管理是建设工程项目管理的重要组成部分,加强索赔管理、研究索赔方法,对规范合同,提高工程项目管理水平有着重要的现实意义。文章以索赔基本概念为切入点,结合南充嘉陵江特大桥实际情况,对工程索赔管理进行了系统分析。     

公路工程变更项目评审方法分析

为了实现项目变更的优先控制,立足公路工程变更项目评审的必要性,阐述该课题的研究背景,介绍公路工程变更项目评审工作应遵循的原则,并从做好准备工作、把控评审细节以及完善评审机制几方面着手对公路工程变更项目评审的优化策略进行详细分析,旨在为相关研究人员提供参考,切实提升评审工作开展价值,保障公路工程变更项目的合理性和必要性,为后续工程高质量建设以及成本的有效控制创造良好的条件。     

浅谈公路工程变更项目管理及费用控制

在公路项目建设中,当现场情况和原计划不符,需要进行较大调整时,则会申请工程项目变更。本文分析了项目变更产生的原因,提出加强工程项目前期管理,增强变更文件管理力度并严格进行造价审查工作,以达到减少变更项目发生几率、合理控制变更费用的目的。     

贵州高速公路挖方边坡设计变更管理研究

贵州山区地形、地貌及地质条件复杂,高速公路挖方边坡众多,在项目建设过程中产生的变更较多,对项目工期及投资影响较大。本文对都安高速建设过程中已产生的挖方边坡变更资料进行了统计,对易产生变更的挖方边坡类型及变更原因进行分析,结合相关实施细则,提出了一些边坡设计变更管理理念,为贵州山区高速公路项目建设过程中减少挖方边坡变更数量、提高变更效率、确保项目工期、节省项目投资提供参考。     

大直径泥水盾构刀盘刀具应用技术

长大隧道地质情况变化较大,盾构施工中刀盘刀具面临较多问题,尤其刀盘的磨损及刀具损坏是施工中经常遇到的一大难题,加强刀盘刀具技术管理成为大直径复杂地层泥水盾构施工管理的重要环节。文章以广深港客运专线狮子洋隧道盾构施工为例,从影响刀盘磨损及刀具损坏的原因分析至对刀盘的技术管理进行了分析研究,总结出了大直径复杂地层泥水盾构施工刀盘应用技术,对类似项目的盾构施工具有一定的借鉴和参考价值。     

Effects of wind strength and wave height on ship incident risk: Regional trends and seasonality

Oceanographic conditions like wind strength and wave height affect the risk of shipping incidents. Seasonal variations and trends in these effects are studied for weather-related incidents and pollution incidents, for six major ship types and for six regions across the globe. The employed database of more than five million observations combines information from various sources on oceanographic conditions, ship particulars, and incidents. The magnitude of wind and wave effects is found to vary by ship type, region, season, and period, and most of these effects are larger during the autumn and winter season and in recent periods.     

Experimental testing and simulations of speed variations impact on fuel consumption of conventional gasoline passenger cars

Speed variations are considered as an alternative for reducing fuel consumption during the use phase of passenger cars. It explores vehicle engine operating zones with lower fuel consumption, thus making possible a reduction in fuel consumption when compared to constant speed operation. In this paper, we present an evaluation of two conditions of speed variations: 50–70 km/h and 90–110 km/h using numerical simulations and controlled tests. The controlled tests performed on a test track by a professional pilot show that a reduction in fuel consumption is achievable with a conventional gasoline passenger car, with no adaptations for realizing speed variations. Numerical simulations based on a backward quasi-static powertrain model are used to evaluate the potential of speed variations for reducing fuel consumption in other speed variation conditions. When deceleration is performed with gear in neutral position, simulations show that speed variations are always correlated to a lower fuel consumption. This was suspected through previous numerical tests or evaluation on test bench but not in controlled tests conditions.     

Analysis of taxi demand and supply in New York City: implications of recent taxi regulations

This paper investigates temporal and weather-related variation in taxi trips in New York City. A taxi trip data-set with 147 million records covering 10 months of activity is used. It is shown that there are substantial variations in ridership, taxi supply, trip distance, and pickup frequency for different time periods and weather conditions. These variations, in turn, cause variations in driver revenues which is one of the main measures of taxi supply–demand equilibrium. The findings are then used to discuss the anticipated impacts of two recently enacted taxi regulation changes: the first fare increase since 2006 and the E-Hail pilot program which allows taxi hailing with smart phone applications. The fare increase is estimated to cause varying levels of revenue increase for different time periods. E-Hail apps are not expected to offer considerable improvements at all times, but rather when both adequate taxi supply and demand occur simultaneously.     

Do people drive safer when accidents are more expensive: Testing for moral hazard in experience rating schemes

Using individual policies and claims data from the Croatian mandatory motor insurance we test the theoretical proposition that under moral hazard, experience rated pricing scheme should generate the negative state dependence in claims, i.e. that drivers should drive more safely after they had an accident. The empirical challenge in these tests is to disentangle the state dependence from unobserved heterogeneity. We propose a simple approach based on the explicit reliance on the cost of future accidents function which is used to filter out the pure incentives effect, whereas the bonus-malus scale is used to control for pure heterogeneity. Our results confirm the existence of negative dependence in claims indicating the presence of significant moral hazard effect. Increasing a 3-year cost of having an accident by approximately US$20 decreases the probability of having an accident by 6.5%.     

Vehicle insurance and the risk of road traffic accidents

Given the upward trend in incidences of road traffic accidents (RTAs) over recent years, in order to mitigate the financial losses arising from such accidents, governments around the world nowadays generally encourage, or even require, drivers to purchase appropriate vehicle insurance. The primary aim of this study is to examine whether RTAs are directly related to the purchase of vehicle insurance, with our examination of data on vehicle damage insurance policyholders revealing that those drivers who purchase more insurance coverage have a higher probability of being involved in accidents, as a result of which, they will tend to submit more claims. This indicates that insurance coverage might contain information which can be used to assess the probability risk levels of RTAs. We also find that drivers with less safety awareness will tend to purchase more coverage, and that those who purchase more coverage will, in turn, tend to have more accidents and submit more claims. Our findings, which provide a number of road traffic policy implications, would appear to justify the use of the bonus–malus system.     

From Bricks to Clicks: The Impact of Online Retailing on Transport and the Environment

Abstract

Online retailing is growing fast and claims are being made about its positive environmental impact relative to traditional shopping, particularly by the retailers themselves. There is, however, little concrete evidence to support the claims. Whilst there exists some research into the passenger travel implications of e‐shopping, this paper seeks to analyse the issues involved in online shopping from both a passenger and freight transport perspective. The objectives of the paper are first, to set out the complex transport relationships involved in online shopping and in particular the interaction between the passenger and freight aspects and second, to shed some light on the environmental impact of online shopping. It concludes that as things currently stand, it cannot be stated with any degree of certainty that clicks are any more environmentally responsible than bricks. The paper is conceptual in nature and is the pre‐cursor to an empirical study of the issue.     

冰阻状态下输气管线压力变化规律的研究

研究了输气管线冰阻附近的截面在输气管口从加压到稳定这段时间内压力变化的规律 ,给出了相应的压力变化曲线。得出了冰阻段的压力平方差曲线的斜率大于无冰阻段的压力平方差曲线斜率的结论 ,提出用应变测量的方法对输气管线同时进行两点或两点以上的测量来判断半阻位置。     

The effects of the 2013 floods on Germany’s freight traffic

This article analyzes the spatio-temporal effect of the 2013 floods on freight traffic in Germany by using automatic traffic counter data. The methodology uses a proven time-series outlier detection and identification technique to endogenously determine if a counter was affected during the flood and estimate the magnitude and duration of the change in the number of vehicles passing through it. This is the first paper able to quantify climate-related variations in traffic across all the counters of a national network. Results show variations on 10% of all counters and 23% of all main roads. Results allow us to trace the configuration of disrupted and detour routes, recovery times, and the total effect on the network. Our findings serve as an input to other studies on the impact of exogenous events on the transport system and contribute towards the formulation of public policies to improve road resilience.     

The impact of ride-hailing on vehicle miles traveled

Transportation - Ride-haling such as Uber and Lyft are changing the ways people travel. Despite widespread claims that these services help reduce driving, there is little research on this topic....