Sharif Digital Repository

The tendency towards using activity-based models to predict trip demand has increased dramatically over recent years, but these models have suffered insufficient data for calibration and the intrinsic problems of traditional methods imposes the need to search for better alternatives. This paper discusses ways to process the cellphone spatio-temporal data in a manner that makes it comprehensible for traffic interpretations and proposes methods on how to infer urban mobility and activity patterns from the aforementioned data. Movements of each subscriber is described by a sequence of stays and trips and each stay is labelled by an activity. The type of activities are estimated using features... 

The process of urbanization and the dramatic increase in residential population lead to significant development in urban area, especially in metropolitan areas, and cause unpredicted challenges for transportation planning and the mobility of dwellers and products. One of the most heated discussions in urban transportation planning during the last decades is devoted to the nexus among urban spatial development, sprawl and poly-centricity phenomena, and urban transportation system parameters. Definitely, the drivers' behaviors have also altered rapidly during this process. Besides, the complicity of the nature of transportation models for predicting the travel demand of system is inevitable.... 

Knowledge about travel demand patterns is an important requirement for strategic planning and management of urban transportation networks. Use of theoretical trip distribution models such as growth, gravity or intervening opportunities, estimation with the help of questionnaire surveys and development of volume- based O-D estimation methods have been major fields of scientific efforts in recent years.Rapid changes in land use and transportation networks especially in developing countries has raised the importance level of knowledge about changes in travel demand.Traditional approaches are costly, time consuming and suffer from inaccuracies, so,... 

Growth of cities leads to neglecting of travel behavior of nomads, although they are an important portion of Iran’s population. The aim of this study is recognition and studying transportation demand in a nomadic society that their households are mostly farmer. Firstly, the theory of activity-based modeling was studied. Sequential modeling was chosen for modeling which consider daily activities of each person as a result of five sequential decisions: a) Choosing daily activity pattern; b) Choosing primary tour time; c) Choosing primary tour mode choice; d) Choosing secondary tour time; e) Choosing secondary tour mode choice. In order to collect pertinent information and conduct survey,... 

This study aimed to shed some light on travel behavior in tourist villages in Iran. Rural areas need efficacious transportation infrastructures and services to promote sustainable development and to avoid urban migration. By exploring the behavioural aspects of rural transportation, their transportation needs and demands can be effectively determined. Subsequently, accessibility and mobility of rural residents can be provided in a sustainable manner. In recent years, tourism has transformed lifestyle and behavior of some rural inhabitants. Utilizing secondary school students in Niasar, a simplified questionnaire was used to collect person and household data. Socio-economic, activity and trip... 

Although villagers and nomads are an important part of Iran's population, the growth of cities has led to neglecting them and their needs including traveling and transportation needs. The aim of this study is to recognize and to study the transportation demands in a pastoral nomadic society. For this purpose, the theory of activity-based modeling was studied. Sequential modeling was chosen which considers the daily activities of each person as a result of five sequential decisions: a) choosing daily activity pattern; b) choosing primary tour time; c) choosing primary tour mode choice; d) choosing secondary tour time; and e) choosing secondary tour mode choice. In order to conduct a survey... 

To gain commercial competitive advantage in a constantly changing business environment, demand forecasting is very crucial for an organization in order to make right decisions regarding manufacturing and inventory management. The objective of this thesis is to propose a forecasting technique which is modeled by artificial neural-fuzzy networks. The effectiveness of the proposed approach to the demand forecasting issue is demonstrated using real-word data. Then we investigate a suitability of a decision-making model for airline route planning based on the so called “Game Theory”. The model is helpful to decide whether a new route is, in fact, needed. Different case studies reveal that... 

Activity bases models of travel demand considers travel demand as a derived demand to fulfill activities. Development of these models cause better understanding of the mechanism of travel through Integrity, interdependencies, higher temporal and spatial aggregation, and behavioral basis. Although these models requires of spatial and temporal data with high resolution of huge number of peoples. Gathering this data through surveys require great labor and time. Mobile phone data of cellular network have high spatial-temporal resolution used for billing purposes and can be used as a supplementary source of data to develop activity based models. This research uses mobility patterns called motifs... 

Recently, developing countries have faced fundamental problems due to the ignorance of rural areas and their deficiencies. These problems could be summarized in extended immigration to nearby cities and an outstanding decrease in agriculture and animal husbandry. Such problems have forced the governments to take on new attitudes towards the expansion rural facilities. In this regard, Transportation can be viewed as an index of development. The following research is aimed to estimate travel demand in rural areas with a newly promoted method, named as “Activity- based Demand Modeling”. Unlike trip based models, Activity- based procedures focus on recognition of daily activity patterns and... 

Although rural inhabitants constitute a large portion of developing countries’ population, they have always been neglected in many ways. Expansion of equity, calls for a new concern in adequacy of rural development. The problem could be considered in two aspects: Firstly, there is a great tendency for immigration to nearby cities, hoping for a better life. This would result in more crowded cities, extended poverty and an increasing rate of crime mainly in suburban areas. On the other hand, the evacuation of farms and fertilized lands imposes great economical loss to the country. Therefore, development of rural facilities should be integrated into national policies to assure a homogeneous and... 

Transportation, as a prerequisite of sustainable development of rural areas, should be considered as a high priority step in planning. This issue needs even more attention in developing countries such as Iran as significant part of population in these countries resides in rural areas. However, still little is known about the activity and travel characteristics of rural residents. This study focuses on developing comprehensive framework to model disaggregate travel demand of rural residents based on daily activity-travel pattern, application of this framework in estimating the transportation decisions and measuring the effectiveness of policies related to improving rural transportation modes.... 

Given the growth of the world's population along with the increase in the percentage of urban population by 2050, the way of responding to food consumption will change in the future. Controlled Environment Agriculture will largely account for future food supply. Vertical Farming is one of these systems. But despite the efficiency of these systems in terms of land and water and also not being affected by weather conditions, the main challenge in these systems is the consumption of energy use per unit of crop production. The cost of energy is about 25 to 40 percent of the total costs. The purpose of this study is to develop an integrated dynamic model for the determination of vertical farm...