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RISS 인기검색어
- 검색키워드
- 저자 : Rajat Rastogi (검색결과 5 건)
- 무료
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Segmentation Analysis of Domestic Tourists – A Case Study
Rajat Rastogi,Harikrishna M.,Ajit Patil 대한토목학회 2015 KSCE JOURNAL OF CIVIL ENGINEERING Vol.19 No.5
This paper presents the segmentation analysis of domestic leisure tourists in India. Samples were taken from visitors to 6 cities categorised by ‘leisure value’ and the population was further segmented based on ‘household income’ and ‘trip frequency’. Key salient features were substantial numbers of tourists belonging to middle-income group, and major share going to train. Logit analysis was carried out. NL structure was justified for seven categorisations out of nine. The proposed sub-categorisation was found to be significant and statically different then the parent population. Factors like household income, comfort and convenience of use of a travel mode, service levels in travel modes, budgetary constraints, presence of children and older persons in a family and affordability of travel mode were found to be influencing the leisure travel. Consideration set got influenced by user and destination connectivity. Frequency of travel was affected by economic affordability and status of the tourist. Value of travel time kept shifting judiciously across the sub-categories. The tourists valued their time highly if visiting spiritual locations or made less number of leisure trips in a year. Middle income group was found aspiring to avail higher facilities on leisure travel and was willing to pay more for the same. Policy initiatives are proposed based on the work. The approach is applicable to any city across the countries, which has either cultural, religious or waterfront value.
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Analysis of Flow Characteristics and Step Size of Escalators at Metro Stations
Dharitri Kahali,Rajat Rastogi 대한토목학회 2021 KSCE JOURNAL OF CIVIL ENGINEERING Vol.25 No.3
This paper discusses the analysis of flow characteristics on escalators and examines the adequacy of step size. The study was carried out on nine escalators at three metro stations in New Delhi, the capital city of India. Data were collected during morning and evening peak flow periods. Peak flows on the escalators being studied are observed to be higher during evening period as compared to the morning period. Flow values are quite high when compared with flow values at metro stations in China or England or on similar facilities at railway stations. Maximum density was found higher as compared to that reported in China and England and comparable to that at railway stations in India. Space per person was found comparable to the reported values. Relationships between flow characteristics were also developed. Step dimension adequacy was checked and suggested to be modified in the light of person body dimension reported in different guidelines. The outcome will assist the planners to take considered decisions related to escalators.
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Descriptive and Parametric Analysis of Pedestrian Gap Acceptance in Mixed Traffic Conditions
Satish Chandra,Rajat Rastogi,Vivek R. Das 대한토목학회 2014 KSCE JOURNAL OF CIVIL ENGINEERING Vol.18 No.1
Crossing is an inevitable part of walking in which the desired path of pedestrians conflicts with vehicular traffic. These conflicts can result in either delay or risk to the pedestrians. Due to insufficient designated crossing points on a highway or improper design,most pedestrians are forced to cross at random unpredictable locations. As such, they create confusion and risks to themselves, as well as to the drivers. Road accident statistics reveal that pedestrian injury and deaths are very high in India and improper gap acceptance during crossing is a major contributing factor. Gap acceptance data collected at 17 locations in five cities of India are analysed in this study to understand the variation in the gap acceptance behavior through descriptive and parametric analysis. Descriptive analysis provided central tendency, dispersion and distribution of gap acceptance data, whereas, parametric analysis resulted in identification of relationships between factors affecting accepted gap. Accepted gap was found decreasing with conflicting traffic and crossing speed of the pedestrians. It also found varying with change in number of lanes on the road to be crossed. Critical gap was estimated from accepted gap and crossing time distribution functions for varied traffic and spatial conditions.
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Cavernous sinus thrombosis following dental extraction : a rare case report and forgotten entity
Karun Aggarwal,Sanjay Rastogi,Atul Joshi,Ashish Kumar,Archana Chaurasia,Rajat Prakash 대한구강악안면외과학회 2017 대한구강악안면외과학회지 Vol.43 No.5
Prior to the advent of efficacious antimicrobial agents, the mortality rate from cavernous sinus thrombosis (CST) was effectively 100%. There have been very few reports of CST associated with tooth extraction. A 40-year-old female presented to the emergency room with swelling over the right side of the face and history of extraction in the upper right region by an unregistered dental practitioner. The patient presented with diplopia, periorbital ecchymosis, and chemosis of the right eye. A computed tomography scan revealed venous dilatation of the right superior ophthalmic vein. The patient was immediately treated with incision and drainage, intravenous antibiotics, and heparin (low molecular weight). Unfortunately, the patient died two days after surgery due to complications from the disease. CST is a rare disease with a high mortality rate. Therefore, dental health education in rural areas, legal action against unregistered dental practitioners, early diagnosis, and aggressive antibiotic treatment can prevent future mortality resulting from CST.
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Critical Review of Flexible Pavement Performance Models
Ankit Gupta,Praveen Kumar,Rajat Rastogi 대한토목학회 2014 KSCE JOURNAL OF CIVIL ENGINEERING Vol.18 No.1
Maintenance and repair of the highway network system are major expenses in the state budget. For this reason various concerned organizations are pointing out the need for developing an intelligent and efficient pavement performance model that can prioritize pavement maintenance and rehabilitation works. Such models can forecast the remaining pavement service life and pavement rehabilitation needs, and can help in the formulation of pavement maintenance and strengthening programmes which will reduce the road agency and road user costs. The flexible pavement performance or deterioration models involve the complex interaction between vehicles and the environment, and the structure and surface of the pavement. Performance models relating to the pavement distress conditions like, cracking, raveling, potholing, and roughness are analyzed and developed by various researchers. But most of these models are found applicable to a particular set of traffic or environment conditions, thus highlighting the need of model(s) that can work in varied conditions satisfactorily. The paper presents a detailed review of various pavement performance models to examine the role of factors related to pavement materials, environmental conditions, type of traffic and volume of traffic, and to identify the limitations and gaps in the present knowledge on such models.
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