scholarly journals Towards Shared Mobility Services in Ring Shape

2020 ◽  
Author(s):  
Fabien Leurent
Keyword(s):  
Service Management ◽  
Production Costs ◽  
Access Time ◽  
Fleet Size ◽  
Vehicle Type ◽  
Mobility Service ◽  
Ring Shape ◽  
Public Subsidies ◽  
Shared Mobility

A shared mobility service (SMS) under ring shape would combine the principle of service cycle along a fixed route (as in a transit line) and a fairly important territorial coverage, assuming that every user would accept to walk on some length to and from the service. Thus, service availability can be optimised, detours are avoided, vehicles achieve higher productivity. The synergy between the ring-shaped infrastructure and the vehicle fleet enables to optimise the quality of service in terms of access time and ride time, and also to reduce production costs - and therefore the tariff fares, under suitable regulation. The chapter aims to reveal these ‘systemic qualities’ of ring-shaped SMSs by providing a mathematical model called ‘Orbicity’. It has a four-fold architecture: (i) traffic operations, (ii) supply-demand equilibrium under elastic demand, (iii) service management with endogenous fleet size and fare rate, (iv) service policy in terms of technology (vehicle type, number of places, energy vector, driving technology) and also the regulation regime. After outlining the model for ring-shaped shuttle services, we explore a set of scenarios along two axes of technological generation and regulation regime. It appears that ring-shaped shuttle services could be supplied at very affordable prices, while achieving profitability and requiring no public subsidies.

Open Innovation in the Shared Mobility Market

2021 ◽  
Vol 7 (4) ◽  
pp. 212
Author(s):  
Katarzyna Turoń ◽  
Andrzej Kubik
Keyword(s):  
Quality Of Service ◽  
Open Innovation ◽  
Service Providers ◽  
Mutual Benefit ◽  
It Service ◽  
Mobility Service ◽  
Factors Influencing ◽  
Shared Mobility ◽  
Practical Recommendations

The market for shared mobility services is growing very quickly. New types of vehicles have been introduced, and the offer of available services and functionalities has expanded, the purpose of which is to improve the quality of service. Despite all the improvements, it is still not possible to speak of achieving full availability of systems that meet the needs of users. This is due to the reluctant involvement of operators of shared mobility systems in joining Mobility as a Service platforms based on the idea of open innovation. The aim of the article is to analyze the factors influencing the limitations in the development of open innovations in the form of Mobility as a Service (MaaS) services. The authors focus on identifying the challenges and concerns faced by shared mobility service providers. The article supports the development of the concept of open innovation in shared mobility services. It also contains practical recommendations for the development of MaaS systems. The results of the developed research can be used by operators of shared mobility services, transport authorities, or IT service providers providing MaaS services to strengthen cooperation and integration using the language of mutual benefit.

scholarly journals FACILITATING MICROMOBILITY FOR FIRST AND LAST MILE CONNECTION WITH PUBLIC TRANSIT THROUGH ENVIRONMENTAL DESIGN: A CASE STUDY OF CALIFORNIA BAY AREA RAPID TRANSIT STATIONS

2021 ◽  
Vol 1 ◽  
pp. 1577-1586
Author(s):  
Beth Ferguson ◽  
Angela Sanguinetti
Keyword(s):  
Traffic Congestion ◽  
Public Transit ◽  
Environmental Design ◽  
Fleet Size ◽  
Service Characteristics ◽  
Bay Area ◽  
Mobility Service ◽  
Last Mile ◽  
Shared Mobility

AbstractMicromobility has the potential to reduce greenhouse gas emissions, traffic congestion, and air pollution, particularly when replacing private vehicle use in conjunction with public transit for first- and last-mile travel. The design of the built environment in and around public transit stations plays a key role in the integration of public transit and micromobility. This research presents a case study of rail stations in the California Bay Area, which are in the operation zone of seven shared micromobility operators. Nineteen stations and their surroundings were surveyed to inventory design features that could enable or constrain use of micromobility for first- and last-mile access. Shared mobility service characteristics, crime records, and connections to underserved communities were also documented. Key design solutions were identified based on the findings, including protected bike lanes, increased shared bike and scooter fleet size and service area, and clear signage indicating parking corral and docking points.

Administrasi Layanan Khusus

2020 ◽  
Author(s):  
Haisya Hamini
Keyword(s):  
Learning Process ◽  
Teaching And Learning ◽  
School Health ◽  
Service Management ◽  
Educational Goals ◽  
Guidance And Counseling ◽  
School Based ◽  
Special Services ◽  
School Cafeterias

This article describes the administration of special services. The teaching and learning process requires the support of facilities that are not directly used in the classroom. Facilities that do not directly include school libraries, school cooperatives, school health businesses and school cafeterias. Management of special services in schools is effective and efficient School Based Management (SBM). School is one of the facilities that can be used to improve the quality of Indonesia's population. Schools not only have responsibilities and duties to carry out the learning process in developing science and technology, but must maintain and improve students' physical and spiritual health.Special service management in schools is basically defined and organized to facilitate or facilitate learning, and can meet the special needs of students at school. Special services are provided in schools with a view to facilitating the implementation of teaching in the context of achieving educational goals in schools. Special services include guidance and counseling, libraries, laboratories, school health efforts (uks), canteens, school cooperatives, and transportation.

An Approach for Quality of Service Management

1998 ◽  
Author(s):  
Chen Lee ◽  
Dan Siewiorek
Keyword(s):  
Quality Of Service ◽  
Service Management

scholarly journals Policy refinement for IP differentiated services Quality of Service management

2006 ◽  
Vol 3 (2) ◽  
pp. 2-13 ◽  
Author(s):  
Arosha K. Bandara ◽  
Emil C. Lupu ◽  
Alessandra Russo ◽  
Naranker Dulay ◽  
Morris Sloman ◽  
...  
Keyword(s):  
Quality Of Service ◽  
Service Management ◽  
Services Quality ◽  
Differentiated Services ◽  
Policy Refinement

The Study of How to Extrude the Special Shaft Parts into Form

2013 ◽  
Vol 401-403 ◽  
pp. 908-911
Author(s):  
Xi Ping Bai
Keyword(s):  
Processing Method ◽  
Production Costs ◽  
Cold Extrusion ◽  
Utilization Rate ◽  
Mechanical Processing ◽  
Molding Process ◽  
Technical Problems ◽  
Full Analysis ◽  
Extrusion Forming

In this article, it mainly describes the use of extrusion production process as an example of the special shaft. It gives us a full analysis from the structure of the product, the material problems, the key technical problems needed to be solved, blank preparation processing and the process of extrusion forming. It also introduces the blank dimensions and the calculation method of the extrusion pressure. The method of blank lubrication processing and the process of designing extrusion mould.We are not unfamiliar with the center shaft of the bike. It is one of the important parts in bicycle bottom bracket. It is also a key part to determine the quality of the bicycle. Generally speaking, materials are used is 20 steel. The roughness of the surface is moderate. But the requirement of the product precision is high. We can get it by using mechanical processing method. But it is processing and the efficiency is low. While the utilization rate of mental material is low. So the production costs high. Because the parts production patch is large and the annual production is hundreds of thousands of pieces. In my opinion, it is more reasonable for us to adopt the technology of producing the parts with the cold extrusion precision molding process. Then we can save the materials, improve the efficiency of producing parts, lower the production parts and then meet the requirement of mass production.

Tool workspace consideration for assembly plan generation

2021 ◽  
Vol 41 (5) ◽  
pp. 612-625
Author(s):  
Akram Bedeoui ◽  
Riadh Ben Hadj ◽  
Moncef Hammadi ◽  
Nizar Aifaoui
Keyword(s):  
Collision Detection ◽  
New Product ◽  
Production Costs ◽  
Assembly Sequence ◽  
Content Type ◽  
Plan Generation ◽  
Assembly Sequences ◽  
Dynamic Interference ◽  
Time Decrease

Purpose During the design of a new product, the generation of assembly sequences plans (ASPs) has become one of the most important problems taken into account by researchers. In fact, a good mounting order allows the time decrease of the assembly process which leads to the reduction of production costs. In this context, researchers developed several methods to generate and optimize ASP based on various criteria. Although this paper aims to improve the quality of ASP it is necessary to increase the number of criteria which must be taken into account when generating ASPs. Design/methodology/approach In this paper, an ASP generation approach, which is based on three main algorithms, is proposed. The first one generates a set of assembly sequences based on stability criteria. The obtained results are treated by the second algorithm which is based on assembly tools (ATs) workspace criterion. An illustrative example is used to explain the different steps of this proposed approach. Moreover, a comparative study is done to highlight its advantages. Findings The proposed algorithm verifies, for each assembly sequence, the minimal required workspace of used AT and eliminates the ASPs non-respecting this criterion. Finally, the remaining assembly sequences are treated by the third algorithm to reduce the AT change during the mounting operation. Originality/value The proposed approach introduces the concept of AT workspace to simulate and select ASPs that respect this criterion. The dynamic interference process allows the eventual collision detection between tool and component and avoids it. The proposed approach reduces the AT change during the mounting operations.

Synthesis of Low Viscosity Polydimethylsiloxane Using Low Grade of Octamethylcyclotetrasiloxane

2021 ◽  
Vol 1028 ◽  
pp. 365-370
Author(s):  
Diba G Auliya ◽  
Soni Setiadji ◽  
Zulfi Mofa Agasa ◽  
Fitrilawati ◽  
Norman Syakir ◽  
...  
Keyword(s):  
Ring Opening ◽  
Raw Materials ◽  
Vitreoretinal Surgery ◽  
Production Costs ◽  
Low Grade ◽  
High Grade ◽  
High Quality ◽  
Low Viscosity ◽  
Polymerization Method

Polydimethylsiloxane (PDMS) has been widely used as a vitreous humour substitution in vitreoretinal surgery. Due to its limited availability and increasing domestic needs, the price of PDMS in Indonesia became very expensive. Previously, we reported the synthesized of PDMS from a high grade of monomer of 98% of Octamethylcyclotetrasiloxane (D4) and found that all PDMS samples produced high quality samples similar to that of commercial one. However, by considering the ease of obtaining raw materials and also the production costs, the synthesis of PDMS using monomer which easy to be found in Indonesia and low production costs is needed to be developed. Here, we reported the synthesis of PDMS using low grade of 96% of D4 in order to produce high quality of PDMS with low viscosity that can be used for vitreous humous substitution in vitreoretinal surgery. PDMS samples with low viscosity value of 0.94-1.35 Pa.s have been successfully synthesized from low grade of D4 and MM using ring-opening polymerization method. The yields of PDMS resulted in this research were in the range between 67.27% and 76.26%. From FTIR spectroscopy, it is found that all synthesized samples have structure and functional groups similar to PDMS using high grade of monomer of 98% Octamethylcyclotetrasiloxane (D4). From refractometer and surfgauge measurements, all samples have refractive index in the range of 1,4034-1,4040 and the value surface tension was 21 m.N/m.

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