scholarly journals The Impact of Pedestrian and Nonmotorized Vehicle Violations on Vehicle Emissions at Signalized Intersections in the Real World: A Case Study in Beijing

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Jianchang Huang ◽  
Guohua Song ◽  
Jianbo Zhang ◽  
Zufen Li ◽  
Yizheng Wu ◽  
...  
Keyword(s):  
Blocking Probability ◽  
Survival Curve ◽  
Red Light ◽  
Urban Traffic ◽  
Emission Model ◽  
Left Turn ◽  
Critical Violations ◽  
The Impact ◽  
The Relationship

Emission around intersections has become an issue in the urban traffic network. This paper aims to investigate the impact of pedestrian and nonmotorized vehicle violations on emissions at mixed-traffic flow intersection based on the volumes of vehicles, nonmotor vehicles, and pedestrians. Also, it focuses on the arterial and collector intersections with high vehicle volume and limited space. Running red light and crossing intersection diagonally are two critical violations, accounting for 91.75% of effective violations (interference with vehicles’ operation). In this context, a violation blocking model is developed to estimate the blocking probability for each vehicle based on the volumes of pedestrians and nonmotor vehicles. The model includes two scenarios. (1) Through phase: the violation blocking model of running red light is developed based on the survival curve (the relationship between waiting time and running red light probability). (2) Left-turn phase: the violation blocking model at this phase includes two parts: (i) crossing the intersection diagonally model is developed for the first vehicle and (ii) running red light model is developed for subsequent vehicles. The existing emission model can estimate the emissions based on the blocking positions. In the case study, emissions increase with the vehicle volume approaching the saturated flow rate and the volumes of nonmotor vehicles and pedestrians increasing. Results show that the maximum emission increase of CO (carbon monoxide) for through phase and left-turn phase can reach 16.7% and 36.4%.

scholarly journals The Impact of Violations of Bicycles and Pedestrians on Vehicle Emissions at Signalized Intersections

2020 ◽  
Vol 2020 ◽  
pp. 1-14
Author(s):  
Jianchang Huang ◽  
Guohua Song ◽  
Jianbo Zhang ◽  
Chenxu Li ◽  
Qiumei Liu ◽  
...  
Keyword(s):  
Traffic Flow ◽  
Hot Spot ◽  
Red Light ◽  
Signalized Intersections ◽  
Urban Traffic ◽  
Emission Model ◽  
Car Following Model ◽  
One Stop ◽  
The One ◽  
The Impact

An intersection is a typical emission hot spot in the urban traffic network. And frequent violations such as running the red light have been a critical social problem at signalized intersections in developing countries. This article aimed to quantify the impact of violations (behaviors which will block the fleet) on emissions at signalized intersections. Increased emissions of vehicles affected by violations are of two levels: (1) trajectory level for the first four affected vehicles and (2) traffic flow level for the subsequent vehicles. At the trajectory level, the study focuses on the second-by-second activities of the first four affected vehicles. First, the trajectory model of the first affected vehicle is developed. Then, the trajectory of the other three vehicles is constructed using the Gipps car-following model. At the traffic flow level, a linear emission model is developed to describe the relationship between emission factors and idling time in the one-stop (vehicle stop once) and two-stop (vehicle stop twice) scenarios based on the global position system (GPS)-collected data at 44 intersections in Beijing. Based on the linear emission model, increased emissions at the traffic flow level are calculated as knowing the number of stops and idling time before and after violations. The analysis of the subsequent vehicles is divided into unsaturated and saturated conditions. Under the unsaturated condition, the emissions have barely increased due to the increase of idling time for one-stop vehicles caused by the violations. Under the saturated conditions, the emission increment increases sharply as the one-stop vehicle gradually transforms to a two-stop vehicle because of violations, and the maximum emission increment reaches 45% in half an hour in the case. The increment of emissions decreases steadily as the proportion of two-stop vehicles reaches 100% after violations, while the proportion before violations keeps increasing.

An Analytical Approach to Cruise Tourism As an Option For Development: a Case Study of the Sultanate of Oman

2020 ◽  
Vol 15 (2) ◽  
pp. 95-109
Author(s):  
Heba Aziz ◽  
Osman El-Said ◽  
Marike Bontenbal
Keyword(s):  
Capital City ◽  
Sultanate Of Oman ◽  
Policy Makers ◽  
Cruise Tourism ◽  
The Impact ◽  
The Relationship ◽  
Average Expenditure ◽  
Return Intention

The objective of this study was to measure the level of cruise tourists' satisfaction as well as the relationship between satisfaction, recommendation, return intention, and expenditure. Also, the impact of factors such as nationality, length of the visit, and age on the level of expenditure was measured. An empirical approach for data collection was followed and a total of 152 questionnaires were collected from cruise tourists visiting the capital city of Oman, Muscat, as cruise liners anchor at Sultan Qaboos Port. Results of the regression analysis supported the existence of a causal relationship between satisfaction with destination attributes, overall satisfaction, recommendation, return intention, and expenditure. It was found that the average expenditure varies according to age and length of the visit. Recommendations for policy makers were suggested on how to increase the role of cruise tourism in strengthening the economy.

Comprehensive Pricing Model of Urban Traffic Air Pollution Based on Bi-Level Programming

2012 ◽  
Vol 253-255 ◽  
pp. 1913-1917
Author(s):  
Ze Bin Zhao
Keyword(s):  
Air Pollution ◽  
Negative Impact ◽  
Urban Traffic ◽  
Vehicle Speed ◽  
Pricing Model ◽  
The Sustainable Development ◽  
Transport Services ◽  
Relationship Model ◽  
The Relationship

In order to reduce the negative impact of urban traffic air pollution, this paper firstly analyzes the relationship between urban traffic air pollution and vehicle speed, after providing the relationship model, the paper establishes a comprehensive pricing model of urban traffic air pollution based on bi-level programming, the model considers the traffic air pollution pricing, and includes the factors of congestion pricing, bus fee, pricing revenue redistribution on improvement of public transport services and the expansion of road capacity. The case study shows that the implementation of comprehensive pricing of urban traffic air pollution can reduce traffic pollution and unreasonable traffic flow, which is conducive to the sustainable development of the city.

scholarly journals Gender and feminist considerations in Artificial Intelligence from a developing-world perspective, with India as a case study

2021 ◽  
Author(s):  
SANGHAMITRA CHOUDHURY ◽  
Shailendra Kumar
Keyword(s):  
Artificial Intelligence ◽  
Developing Countries ◽  
Developing World ◽  
Developed Countries ◽  
High Level ◽  
The Impact ◽  
The Relationship ◽  
Precarious Situation ◽  
And Robotics

<p>The relationship between women, technology manifestation, and likely prospects in the developing world is discussed in this manuscript. Using India as a case study, the paper goes on to discuss how ontology and epistemology views utilised in AI (Artificial Intelligence) and robotics will affect women's prospects in developing countries. Women in developing countries, notably in South Asia, are perceived as doing domestic work and are underrepresented in high-level professions. They are disproportionately underemployed and face prejudice in the workplace. The purpose of this study is to determine if the introduction of AI would exacerbate the already precarious situation of women in the developing world or if it would serve as a liberating force. While studies on the impact of AI on women have been undertaken in developed countries, there has been less research in developing countries. This manuscript attempts to fill that need.</p>

scholarly journals Principals Agents and Prisoners: An Economical Perspective on Information Systems Development Practice

10.28945/3041 ◽  
2006 ◽  
Author(s):  
Karlheinz Kautz ◽  
Bjarke Nielsen
Keyword(s):  
Information Systems ◽  
Systems Development ◽  
Information Systems Development ◽  
Research Approach ◽  
Price Structure ◽  
Relationship Of ◽  
The Impact ◽  
The Relationship ◽  
Development Practice

Information systems development takes place within an economical context. However, the economical conditions, which shape systems development in practice, are hardly researched. In this paper we are investigating the question how a given price structure influences systems development projects. Our analysis is based on a multi case study and a Grounded Theory inspired research approach. Our work is informed by economic theories, which deal with the relationship of suppliers and customers and their mutual dependency. We thus apply principal-agent theory and economic game theory in form of the prisoner’s dilemma. As a result we provide three interlinked models for understanding the impact of pricing structure on systems development practice. The main elements of these models are pricing structure, risk distribution and price level, and opportunistic behavior. We discuss how these elements are interrelated and examine their impact on information systems development in practice.

scholarly journals Social Relational Capital as a Community Economic Development Factor

2019 ◽  
Vol IV (I) ◽  
pp. 108-119
Author(s):  
Mujib Ur Rahman ◽  
Muhammad Faizan Malik ◽  
Wisal Ahmad
Keyword(s):  
Economic Development ◽  
Business Community ◽  
Community Economic Development ◽  
Relational Capital ◽  
Purposive Sampling ◽  
Development Factor ◽  
High Investment ◽  
The Impact ◽  
The Relationship

The paper examined the impact of relational capitals on community economic development. For this purpose, the handloom business community was taken as a case study from Peshawar Valley. Data was collected through purposive sampling from169 handlooms firms. The results concluded that the impact of relational capital is significant, and the relationship is positive. This study hereby suggests that government and policymakers should invest in making ties and a strong network of firms within and outside of the community; hence with high investment in making strong social-relational capital can develop the entire entrepreneurial communities.

scholarly journals PENGARUH REVIU RKA-K/L OLEH APIP TERHADAP EFISIENSI ALOKASI ANGGARAN KEMENTERIAN AGAMA

2019 ◽  
Vol 1 (1) ◽  
pp. 12
Author(s):  
Edy Effendi ◽  
Muhammad Imron
Keyword(s):  
Linear Regression ◽  
Simple Linear Regression ◽  
Independent Variables ◽  
Dependent Variables ◽  
Before And After ◽  
The Impact ◽  
The Relationship ◽  
Positive Effect

Research on the role of the APIP review of the Ministry/agency Work Plan and Budget document to determine the impact on the efficiency of ministry/agency spending (case study at the Ministry of Religion). The method used in this study uses simple linear regression with dummy. The use of linear regression is used to examine the relationship between independent variables (certain types of expenditure) and dependent variables (total expenditure). Whereas, dummy is used to find out before and after the APIP review is done. Throughout the author's search, this research has never been done. Based on the results of linear regression obtained, the APIP review significantly had a positive effect on official travel expenditure and honorarium but did not significantly affect building spending and equipment. Abstrak   Penelitian atas peran reviu APIP atas dokumen Rencana Kerja dan Anggaran Kementerian Negara/Lembaga untuk mengetahui dampaknya terhadap efisiensi belanja kementerian/lembaga (studi kasus pada Kementerian Agama). Metode yang digunakan dalam penelitian ini menggunakan regresi linier sederhana dengan dummy. Penggunaan regresi liner digunakan untuk meneliti hubungan antara variable independen (jenis belanja tertentu) dan variable dependen (total belanja). Sedangkan, dummy digunakan untuk mengetahui sebelum dan setelah reviu APIP dilakukan. Sepanjang penelusuran penulis, penelitian ini belum pernah dilakukan. Berdasarkan hasil regresi linier diperoleh, reviu APIP signifikan berpengaruh positif terhadap  belanja perjalanan dinas dan honorarium tetapi tidak signifikan berbengaruh terhadap belanja gedung dan alat.

scholarly journals Change Of Social Capital Of Dairy Farmers Groups: A Case Study Of Institutionalization Of Sapi Merapi Sejahtera Sleman (Samesta) Cooperative In Sleman, Yogyakarta

2018 ◽  
pp. 52 ◽  
Author(s):  
Najmudin Najmudin
Keyword(s):  
Social Capital ◽  
Cultural Values ◽  
Milk Production ◽  
Economic Behavior ◽  
Positive Behavior ◽  
Dairy Farmers ◽  
Fair Treatment ◽  
The Impact ◽  
The Relationship

The results shows that there are changes of social capital of dairy farmers groups in the process of institutionalization of SAMESTA cooperatives. The change is the impact of the conditions of Indonesian dairy. These changes occur in several elements of social capital, as follows: (1) Value, as a guide and reinforcement of farmers’ positive behavior. The existing values among farmers are klangenan (like), titen (scrutinize deeply), honesty, and togetherness. These values ​​become the fuel that forces the farmers to relate each other and realize the more transparent and fairer cooperative. This case shows the influence of cultural values ​​on the farmers’ economic behavior. They calculate inputs and outputs, and make some adjustments to prevent them from losing and calculate the standard number of cows that they have. (2) Trust changes positively, especially by raising the milk price from farmers, although it gives a risk to the cooperative income. This decision is expected to increase the farmers' ethos, thus impacts on the increase of milk production. (3) Networks, in which the relationship between farmers firstly occurs in hamlet area, then it extends the network beyond those limits. Farmers from different villages are connected naturally. This inter-subject's relationship occurs due to the same goals, which are wishes to be more dignified, prosperous, and get fair treatment.

scholarly journals Jornalismo e deliberação pública: um estudo de casos múltiplos Journalism and public deliberation: a multiple case study Periodismo y deliberación pública: un estudio de casos múltiples

2017 ◽  
Vol 39 (3) ◽  
pp. 5
Author(s):  
Solano Dos Santos Nascimento
Keyword(s):  
Social Problems ◽  
Multiple Case Study ◽  
Public Deliberation ◽  
Multiple Case ◽  
The Impact ◽  
The Relationship

ResumoO artigo apresenta o resultado de um estudo de casos múltiplos a respeito da relação entre três reportagens que trataram de problemas sociais – publicadas pela revista Época e pelos jornais O Globo e Correio Braziliense - e mudanças na legislação que teoricamente buscaram resolver os problemas apontados pelas reportagens. O estudo concluiu que houve influência das reportagens nas mudanças em leis, mas que esse impacto teve nuanças bastante distintas.AbstractThis report presents the results of a multiple case study about the relationship between three stories  that dealt with social problems - published by Época magazine and O Globo and Correio Braziliense newspapers  - and changes in legislation that theoretically sought to solve the problems pointed out by the stories . The study conclusion was that there was influence of the stories in laws  changes, the impact had quite different shades. ResumenEl artículo presenta el resultado de un estudio de casos múltiples acerca de la relación entre tres reportajes sobre problemas sociales-publicados por la revista Época y por los periódicos O Globo y Correio Braziliense - y cambios en la legislación que teóricamente buscaron resolver los problemas señalados por los reportajes . El estudio concluyó que hubo influencia de los reportajes en los cambios de leyes, pero que ese impacto tuvo matices muy distintos.

The ecomuseum and solidarity tourism: a case study from northeast Turkey

2019 ◽  
Vol 9 (4) ◽  
pp. 537-552
Author(s):  
Mustafa Doğan
Keyword(s):  
Community Development ◽  
Rural Areas ◽  
Design Methodology ◽  
Qualitative Data ◽  
Local Community ◽  
Content Type ◽  
The Impact ◽  
The Relationship ◽  
Depth Interviews

Purpose The purpose of this paper is to examine the relationship between the ecomuseum and solidarity tourism and to measure their impact on community development. Design/methodology/approach The study presented here adopts two methods for collecting qualitative data: in-depth interviews and observations. The total number of village households was 42 and the number of households that hosted tourists in their home was 20. Due to the exploratory nature of this study, qualitative methods were employed in the form of lengthy interviews with 13 residents. Findings The findings indicate that tourism for the Bogatepe Village ecomuseum has focused on a solidarity perspective which has provided significant benefits to the community ensuring local sustainable development. The ecomuseum as a concept and a destination has helped to control tourism and strengthened the impact of solidarity tourism on the local community. Research limitations/implications The research presented here must be seen as exploratory. More generally, further research is needed to look at the possibility of developing this type of tourism in other rural areas and similar regions of Turkey (covering both small and large areas) with an important cultural heritage. Originality/value The combination of the ecomuseum and solidarity tourism can provide a sustainable solution for tourism in rural areas and provide a model in the development of tourism to other villages in Turkey. The question is whether it could also be used in larger rural areas. The study underlines that Bogatepe is certainly worthy of future study.

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