scholarly journals Reducing Passenger Delays by Rolling Stock Rescheduling

2020 ◽  
Vol 54 (3) ◽  
pp. 762-784
Author(s):  
Rowan Hoogervorst ◽  
Twan Dollevoet ◽  
Gábor Maróti ◽  
Dennis Huisman
Keyword(s):  
Operational Efficiency ◽  
Rolling Stock ◽  
Limited Time ◽  
High Quality ◽  
Delay Reduction ◽  
Passenger Comfort ◽  
Reduction Problem

Delays are a major nuisance to railway passengers. The extent to which a delay propagates, and thus affects the passengers, is influenced by the assignment of rolling stock. We propose to reschedule the rolling stock in such a way that the passenger delay is minimized and such that objectives on passenger comfort and operational efficiency are taken into account. We refer to this problem as the passenger delay reduction problem. We propose two models for this problem, which are based on two dominant streams of literature for the traditional rolling stock rescheduling problem. The first model is an arc formulation of the problem, whereas the second model is a path formulation. We test the effectiveness of these models on instances from Netherlands Railways (Nederlandse Spoorwegen). The results show that the rescheduling of rolling stock can significantly decrease passenger delays in the system. Especially, allowing flexibility in the assignment of rolling stock at terminal stations turns out to be effective in reducing the delays. Moreover, we show that the arc formulation–based model performs best in finding high-quality solutions within the limited time that is available in the rescheduling phase.

Effect of Track Geometry and Rail Vehicle Suspension on Passenger Comfort in Curves and Transitions

1977 ◽  
Vol 99 (4) ◽  
pp. 841-848
Author(s):  
G. R. Doyle ◽  
M. A. Thomet
Keyword(s):  
High Speed ◽  
Rolling Stock ◽  
Vehicle Suspension ◽  
Passenger Cars ◽  
Area Formula ◽  
Passenger Comfort ◽  
Track Geometry ◽  
Rail Vehicle ◽  
Current Area ◽  
Six Degree Of Freedom

Passenger comfort is an important constraint on high-speed operation in curves and transitions. The effect of track geometry and vehicle suspension characteristics on passenger comfort were investigated with a six-degree-of-freedom, time domain simulation of the car body dynamics. The rail vehicle was simulated at constant speed on transitions and curves to generate acceleration profiles at a passenger’s seat location. The main conclusion of this study is that modern rolling stock can negotiate curves at a higher unbalanced superelevation than is recommended in the current AREA formula without exceeding passenger comfort standards. Also, the minimum spiral lengths as determined by the AREA formula are adequate for passenger cars with stiff roll characteristics, such as the Metroliner vehicles.

Organization of complex systems for provision of operational reliability of rolling stock

2021 ◽  
pp. 36-41
Author(s):  
Anatoliy Vyacheslavovich Davydov ◽  
◽  
Tatyana Anatolyevna Astakhova ◽  
Keyword(s):  
Life Cycle ◽  
Complex Systems ◽  
Operational Reliability ◽  
State Standards ◽  
Rolling Stock ◽  
High Quality ◽  
Maintenance And Repair ◽  
Transportation Process ◽  
Standard Application ◽  
Quality Production

The use of digital and satellite information systems for the increase of quality and prompt maintenance and repair of rolling stock allows solving important transport tasks. On the modern stage the transportation process sets high requirements to operation of rolling stock that should be regulated by state standards. Modern machinery and technology should promote implementation of high-quality production in order to extend the life cycle of any product that responds the realization of production process. The international practice of standard application convincingly proves it. The paper proposes an organization of complex systems aimed at provision of operational reliability of rolling stock. The authors have determined possible reasons of non-compliance of the standards. As a result, they have set tasks on carrying out modern monitoring and execution of maintenance and repair.

Successful occupational therapy at end of life for a patient with prostate sarcoma

2021 ◽  
Vol 14 (6) ◽  
pp. e242056
Author(s):  
Takayoshi Yamaga ◽  
Katsutoshi Asano ◽  
Masanao Ikeya ◽  
Kosuke Nakanishi
Keyword(s):  
Quality Of Life ◽  
Occupational Therapy ◽  
Activities Of Daily Living ◽  
Daily Living ◽  
Poor Prognosis ◽  
Clinical Report ◽  
Limited Time ◽  
High Quality ◽  
Time Period

Most previous studies on palliative rehabilitation highlight medical care, with occupational therapy (OT) primarily focused on normal and instrumental activities of daily living. This clinical report describes the case of a 35-year-old patient with prostate sarcoma with a poor prognosis who received OT to help him focus on participating in a meaningful occupation. Initially, the patient was depressed and withdrawn, but with OT, he was able to participate in an occupation, and his life became more active. Although the patient was at the end of his life, he was able to maintain a high quality of life during the limited time period.

APPLYING THE CONCEPT OF 6 SIGMA IN THE HOSPITALITY INDUSTRY

2021 ◽  
Vol 1 (2) ◽  
pp. 118-123
Author(s):  
G. JARROUJ ◽  
◽  
S. HASAN ◽  
Keyword(s):  
Quality Of Service ◽  
Competitive Advantage ◽  
Customer Service ◽  
Six Sigma ◽  
Hospitality Industry ◽  
Business Processes ◽  
Operational Efficiency ◽  
High Quality ◽  
Service Efficiency

Lean and Six Sigma are the two most important methods in assessing the quality of business processes in many industries, helping organizations achieve higher efficiency and improved operational efficiency. Both methods are vital to the hospitality industry, giving hotels a competitive advantage by improving customer service efficiency, leaving guests with a good experience, and providing a high quality of service. By combining these two methodologies, it is possible to anticipate and meet the specific expectations and needs of guests.

scholarly journals A Qualitative Study on Providing Alternative Solutions for Handling the HSR Passenger’s Luggage

2021 ◽  
Author(s):  
Lok Pan Lo ◽  
Marin Marinov ◽  
Bernhard Rüger
Keyword(s):  
Qualitative Study ◽  
High Speed ◽  
Comfort Level ◽  
Rolling Stock ◽  
High Speed Rail ◽  
Passenger Comfort ◽  
Railway Company ◽  
Current State ◽  
Alternative Solutions

AbstractThe objective of this paper is to look at the problem of high-speed rail (HSR) passengers’ luggage and provide alternative solutions to improve luggage handling. A qualitative study is carried out to assess the current state of HSR practices, analyse existing issues with HSR passenger luggage and provide alternative solutions, including modification of the passenger unit, double-deck rolling stock, an additional train for transporting luggage, and repositioning of passenger seats. Four solutions are discussed that could solve the problem of HSR passenger luggage handling and evaluated from  four aspects namely passengers, railway operator, cost and passenger comfort level. The solution of additional trains for transporting luggage may be the preferred solution when compared with other options, without compromising the comfort of the passengers or the profit of the railway company.

scholarly journals Principles of the Feedback Action in Local Elements of Rail Yard Interaction

2018 ◽  
Vol 7 (4.3) ◽  
pp. 196
Author(s):  
Petro Yanovsky ◽  
Victoriia Yanovska ◽  
Sergiy Lytvynenko ◽  
Halyna Nesterenko ◽  
Larysa Lytvynenko
Keyword(s):  
Transport Process ◽  
Rolling Stock ◽  
High Quality ◽  
Railway Network ◽  
Slowing Down ◽  
Sorting Process ◽  
Railway Operation ◽  
Effective Use ◽  
Rail Yards ◽  
Significant Shortage

Achievement of high-quality servicing level of cargo owners should be carried out under unconditionally effective use of rolling stock of railways and technical means. The real transport process should be implemented based on logistic cargo supply chains by types of connections for each shipment. The practice of railway operation shows that there is a significant shortage of train locomotives as a result of which the departure of ready trains at rail yard is often not carried out. In such cases, a feedback effect in local elements of interaction of these stations occurs. Due to delay in departure of trains, sending of already formed trains from rail yards is delayed; furthermore, because of the overflow of rail yard tracks, the sorting process on marshalling humps can be slowed down and delay of prepared trains for dismantling at arrival yard may occur. As a result of feedback action, downtimes of rail cars are increasing and movement of inventories is slowing down. In order to mitigate feedbacks effects in local elements of interaction, the principles of their operation, consideration of which will enable acceleration in passage of the rail car and cargo traffic through the railway network in practical activity, were formulated.  

scholarly journals Evolution of the Instructional Design in a Series of Online Workshops | L’évolution d’un design pédagogique dans le développement d’ateliers en ligne

2015 ◽  
Vol 41 (4) ◽  
Author(s):  
Anne Patry ◽  
Elizabeth Campbell Brown ◽  
Rémi Rousseau ◽  
Jeanette Caron
Keyword(s):  
Instructional Design ◽  
Human Resources ◽  
Continuing Education ◽  
Healthcare Professionals ◽  
Time Frame ◽  
Limited Time ◽  
High Quality ◽  
Instructional Design Process ◽  
French Speaking

This case recounts the story of the design and production of a series of online workshops for French-speaking healthcare professionals in Canada. The project spans a couple of years and, despite encountering some challenges, succeeds in large part because of its strong foundation: the instructional design. This case study features an instructional designer from a central Canadian university and three SMEs. The main design issues highlighted are the target population’s limited availability for continuing education, the SME’s lack of knowledge of the instructional design process, the magnitude of this project with its national scope but limited time frame and human resources, as well as personnel changes among the SMEs and the instructional design team. This case outlines how the project team deals with these challenges to produce a series of online workshops that provide high quality training in French to healthcare professionals across Canada.

scholarly journals REQUIRED MATERIALS FOR EXPERTISE IN CASE OF RUNOVER ROLLING STOCK ON AN OBSTACLE

2019 ◽  
pp. 615-621
Author(s):  
Keyword(s):  
Key Words ◽  
Traffic Safety ◽  
Motor Vehicles ◽  
Rolling Stock ◽  
Railway Transport ◽  
High Quality ◽  
Freight Train ◽  
Special Knowledge ◽  
Conducting Research ◽  
The Impact

One of the tasks that are being solved during the forensic railway transport expertise is to investigate the actions and circumstances of a railway accident. After analyzing the state of traffic safety in the structure of Ukrzaliznytsia OJSC, the author found that in recent years the number of runover incidents of rolling stock on pedestrians and motor vehicles has increased significantly. This is primarily due to the non-observance of the “Rules of Conduct of Citizens in Railway Transport”. It was noted that when performing such railway transport expertise, the expert receives an incomplete amount of necessary information, which may be the result of incomplete research or the impossibility of giving an opinion on this railway accident. First of all, this is due to the fact that employees of the bodies of the Ministry of Internal Affairs when they are at the scene of a railroad accident have no special knowledge and cannot select the necessary information for the qualitative expertise. And so, after conducting research, the author came to the conclusion that for a full and high-quality railway transport expertise in the event of rolling stock hitting an obstacle (vehicle or person), the expert needs to have the following list of documents and relevant data, namely: original speedometer module KKD-3 memory, registration tape CLUB-U; certificate on the provision of the train with VU-45 brakes; information on the type of track on which the railway accident occurred (link or continuous), the longitudinal profile and the plan of the section of the route on which the railway accident occurred; full-scale sheet form DU-1 for a freight train, and DU-1L – for the passenger; information on the permissible speed of movement in the area of the railway accident; warning on the train form DU-61; graphic reproduction of a clear situation of a railway accident with an indication of a specific stopping point of the train’s head, the location of the obstacle with reference to the picket column. So, having received the necessary information in accordance with the list that is specified in this article, the expert can objectively and reliably assess the impact of the actions of each of the participants in this incident on the implementation of the mechanism of the railway accident as a whole. Key words: forensic railway-transport expertise, rolling stock, runway, locomotive, track, obstacle.

scholarly journals IMPROVING THE EFFICIENCY OF SERVICE SUBWAY TRAINS

2015 ◽  
Vol 2 (158) ◽  
Author(s):  
Pavlo Kharlamov ◽  
Elmikhan Shabanov
Keyword(s):  
Competitive Environment ◽  
Rolling Stock ◽  
High Quality ◽  
Maintenance And Repair ◽  
Industry Relationship

The extension of the external competitive environment requires searching of new reserves to reducecosts while providing high quality services. The issue of regulating intra-industry relationship on the basis ofoptimizing the costs of operation, maintenance and repair of rolling stock be at this time quite relevant.

Some problems of objective-prism spectra classification

1966 ◽  
Vol 24 ◽  
pp. 51-52
Author(s):  
E. K. Kharadze ◽  
R. A. Bartaya
Keyword(s):  
Short Wave ◽  
High Quality ◽  
Stellar Spectra ◽  
Objective Prism

The unique 70-cm meniscus-type telescope of the Abastumani Astrophysical Observatory supplied with two objective prisms and the seeing conditions characteristic at Mount Kanobili (Abastumani) permit us to obtain stellar spectra of a high quality. No additional design to improve the “climate” immediately around the telescope itself is being applied. The dispersions and photographic magnitude limits are 160 and 660Å/mm, and 12–13, respectively. The short-wave end of spectra reaches 3500–3400Å.

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