background: the aim of this study was to assess the effects of road deicing salt on the quality of the ground water resources in hamadan province during winter season. methods: water samples were taken monthly from thirty wells located around the hamadan-asadabad highway. the quality of well water was examined by measuring amount of sodium, chloride, total hardness, total dissolved solid, elect...

F the past 20 years weaving segments have been analyzed and designed using the methodologies and procedures provided in the 1965 Highway Capacity Manual (HCM).’ With the increase in urban growth in the mid-1960s, it was quickly realized that the procedures provided in the 1965 HCM for the analysis and design of weaving segments were in need of a critical review. In 1969 the National Cooperative...

after the appearance offinancial crises in developing countries, there has been a wide range of researches about the financial capacity of these countries with respect to their debts. though this subject has been a matter of argument for several decades, today it is one of the most contravertial . arguments in economic literature. there are, in general, three factors which determine the income ...

In this paper, we address the optimal joint control of inventory and transshipment for a firm that produces in two locations and faces capacity uncertainty. Capacity uncertainty (e.g., due to downtime, quality problems, yield, etc.) is a common feature of many production systems but its effects have not been explored in the context of a firm that has multiple production facilities. We first cha...

This study was prompted by investigations of models of traffic flow on a highway through analyses of the structure and properties of Poisson fields of random lines in a plane. It is possible to view the trajectory of a car produced by its time and space coordinates on the highway as a straight line in that plane if the car travels at a constant speed once it enters the highway and then never le...

Adequate highways are of vital concern to every citizen of Indiana. They are an integral part of modern life. They provide the most impor­ tant means of bringing people together— of permitting anyone to live a full and happy life. Providing adequate highways within the limitations of funds provided, knowledge available and time required is the respon­ sibility which the public has assigned thro...

tehran shomal highway passes through alborz mountains with a tunnel length of 6400 meters. there are two main tunnels. a full three-dimensional (3d) numerical analysis coupled with elasto-plastic material models was conducted on the inclined access tunnel. bending moment, axial force and the lining displacements due to the internal forces applied on the shotcrete lining are calculated. axial fo...

The ambient air quality monitoring was carried during the May 2003 to April 2004 along the (NH-6) passing through Jalgaon city. The average concentration of SOx 64 microg/m3, NOx 58 microg/ m3, particulates (> 10 micro) 515 microg/m3 and respirable dust particulates 224 microg/m3 was reported at Prabhat during the study period (May 2003-April 2004). This location represents the major highway cr...

Banagrass is a biomass crop candidate for ethanol production in the State of Hawaii. This study examines: (i) whether enough banagrass can be produced to meet Hawaii’s renewable fuel target of 20% highway fuel demand produced with renewable sources by 2020 and (ii) at what cost. This study proposes to locate suitable land areas for banagrass production and ethanol processing, focusing on the tw...

BACKGROUND Intersections generally are analyzed (using methods such as CLV and HCM) as part of a TIS in order to determine if there is adequate residual capacity available in order to add additional traffic through an intersection as a result of proposed development. If the analysis indicates that adequate residual capacity does not exist, additional analyses are performed under various improve...