scholarly journals Reconstruction of a railway station under changing conditions in passenger traffic

2021 ◽  
pp. 82-106
Author(s):  
Oksana D. POKROVSKAY ◽  
◽  
Anna N. ILLARIONOVA ◽  
Keyword(s):  
Practical Importance ◽  
Track Length ◽  
General Systems Theory ◽  
Economic Calculation ◽  
Passenger Traffic ◽  
General Systems ◽  
Organize Work ◽  
Railway Passenger ◽  
The Cost ◽  
To Receive

Objective: Drawing on the study of the situation in railway passenger traffic, to propose measures for the reconstruction of station M of the Murmansk transport hub and perform a consolidated estimate of the cost of implementing the proposed measures. Methods: The means and methods of general systems theory, system and economic analysis, terminalistics, logistics and management of the ope- rational work of railways are used. Results: Based on the results of the economic calculation, it was concluded that it is necessary to reconstruct the exhibition track N 2 to receive passenger trains of 25 cars and organize work with double-deck cars. A consolidated estimate of the cost of building an exhibition track N 2 has been made. Practical importance: Thanks to the increase in the useful track length, new opportunities will be opened for the development of promising passenger traffic at the station in question and, consequently, for an increase in the profit of the Russian Railways company. The results obtained can be applied in the implementation of the development concept of the Mur- mansk transport hub, in the design of individual elements and devices of the railway hub, as well as in the optimization of passenger service technology.

Special features of block trains and container trains promotion in the terminal network of the Saint Petersburg hub

2021 ◽  
Vol 18 (1) ◽  
pp. 34-51
Author(s):  
O. D. Pokrovskaya ◽  
Keyword(s):  
Practical Importance ◽  
Road Transport ◽  
Container Terminals ◽  
General Systems Theory ◽  
Saint Petersburg ◽  
Freight Traffic ◽  
General Systems ◽  
Operational Management ◽  
International Transport ◽  
East West

Objective: To analyze special features of block trains and container trains promotion in the terminal network of the Saint Petersburg hub, in the environment of the discussed transport hub. Methods: The means and methods of the theory of warehouse systems developed by O. B. Malikov, general systems theory, system and economic analysis, logistics, and railways operational management have been applied. Results: It has been established that in order to attract transit cargo flows and further develop international transport corridors passing through the Saint Petersburg hub, primarily East–West directions, it is necessary to create a network of container terminals with flexible logistics. This solution will expand the range of delivery areas using block trains, form competitive through rates, reorient highly profitable freight traffic from road transport to railways, as well as organize interaction with European and Chinese intermodal and stevedore slotting operators and expand the operation areas block trains, container trains, express and specialized trains. Practical importance: The results obtained can be applied in the implementation of the Saint Petersburg transport hub development concept, in the design of railway hub individual elements and units, as well as in the servicing optimization of the seaport and terminal infrastructure.

The results of marketing research on the options of a “smart” high-speed platform

2021 ◽  
Vol 18 (3) ◽  
pp. 353-376
Author(s):  
Yuri P. BORONENKO ◽  
◽  
Oksana D. POKROVSKAYA ◽  
Tamila S. TITOVA ◽  
Denis V. SHEVCHENKO ◽  
...  
Keyword(s):  
High Speed ◽  
Practical Importance ◽  
Marketing Research ◽  
Statistical Processing ◽  
General Systems Theory ◽  
Telemetry System ◽  
Market Segments ◽  
General Systems ◽  
Target Consumer ◽  
Typical Consumer

Objective: To compose a portrait of a typical consumer for various optional lines of equipping a high- speed platform car (“smart” car) with an on-board telemetry system. Methods: The means and methods of marketing, rolling questioning, statistical processing of information, comparison, general systems theory, systemic and economic analyzes, logistics, terminology, visualization are used. Results: Optional lines have been developed for each variant of the technical design of the car, based on the results of processing the questionnaires of the respondents, a portrait of a typical consumer has been compiled; some recommendations on the composition of options in each version of the high-speed platform have been made. Practical importance: The results obtained can be applied when entering the market in terms of establishing optional lines for the design of a high-speed platform and cost. Further research should be aimed at a more detailed study of market segments with the development of the best price and functional-option solutions for the final target consumer.

Wiener and Luhmann on feedback: from complexity to sustainability

Kybernetes ◽  
2017 ◽  
Vol 46 (3) ◽  
pp. 386-399 ◽  
Author(s):  
Vladislav Valentinov
Keyword(s):  
General System ◽  
Feedback Mechanism ◽  
General Systems Theory ◽  
Theoretic Analysis ◽  
Content Type ◽  
System Environment ◽  
Controlled Systems ◽  
General Systems ◽  
The Cost

Purpose The rise of the general systems theory in the twentieth century would not have been possible without the concept of feedback. Of special interest to the present paper is Niklas Luhmann’s reconstruction and critique of Wiener’s cybernetic approach to the feedback concept. Luhmann has suggested that the operation of the feedback-controlled systems potentially poses problems of sustainability. The purpose of this paper is to explore this suggestion in more detail. Design/methodology/approach The reconstruction of the arguments of Luhmann and Wiener shows that both scholars approached the feedback concept from the “system-environment” perspective. Luhmann takes system-environment relations to be inherently precarious. Wiener underscores the importance of the sensitivity of the feedback-controlled systems to their environment. Findings Drawing on Norbert Wiener’s and Niklas Luhmann’s ideas, the paper shows that every specification of the feedback mechanism implies the drawing of the moral boundary that demarcates those parts of the environment to which the relevant system is sensitive from those to which it is not. A likely outcome of this boundary drawing is the maintenance of intra-systemic complexity at the cost of the deteriorating sustainability of the system in its environment. Originality/value Until today, the general system theory has sought to explain organized complexity and rightly underscored the role of feedback in maintaining it, thereby inadvertently creating the chasm between the complexity and sustainability dimensions of human civilization. The present paper pleads for reorienting of the systems-theoretic analysis of the feedback concept toward closing this chasm.

Justification for the container station modification

2021 ◽  
pp. 83-101
Author(s):  
Oksana D. POKROVSKAYA ◽  
◽  
Anna N. ILLARIONOVA ◽  
Keyword(s):  
Systems Theory ◽  
Russian Federation ◽  
Practical Importance ◽  
High Capacity ◽  
Storage Conditions ◽  
Railway Track ◽  
General Systems Theory ◽  
Open Area ◽  
General Systems ◽  
The Russian Federation

Objective: Having studied the features of container train compositions and the container storage conditions in an open area, to propose measures for the station modification and perform a few calculations demonstrating the feasibility of the proposed measures. Me¬thods: Methods of the general systems theory, system and economic analysis, terminalistics, logistics, and railways opera-tional ma¬nagement have been applied. Results: Two alternative options for the development of a container station are proposed, considering the features of the logistics facilities’ evolution and the theory of terminalistics: extension of the railway track and widening the station for storing high-capacity containers by 20 meters. The technology of container train composition on station tracks is considered. The performance of container train composition is calculated taking into account the technology chan¬ging. Practical importance: The increased capacity of the container station opens up new opportunities for the development of a promising container traffic at the station under consideration and, consequently, for the growth of profitability of the terminal and logistics busi-ness of JSC Russian Railways. The study findings can be applied in the implementation of the con-cepts for the development of the container business of the Russian Railways Holding, the creation of a network of terminal and logistics centers in the Russian Federation, as well as in the design of individual elements of the terminal and warehouse infrastructure and optimization of the container train servicing processes.

scholarly journals Acceptability of remote prescribing and postal delivery services for contraceptive pills and treatment of uncomplicated Chlamydia trachomatis

2020 ◽  
pp. bmjsrh-2020-200687
Author(s):  
Tom Nadarzynski ◽  
Ynez Symonds ◽  
Robert Carroll ◽  
Jo Gibbs ◽  
Sally Kidsley ◽  
...  
Keyword(s):  
Online Survey ◽  
Home Delivery ◽  
Transmitted Infection ◽  
Sexually Transmitted ◽  
Sti Testing ◽  
Contraceptive Pills ◽  
Remote Management ◽  
Delivery Services ◽  
The Cost ◽  
To Receive

ObjectivesThe digitalisation of sexual and reproductive health (SRH) services offers valuable opportunities to deliver contraceptive pills and chlamydia treatment by post. We aimed to examine the acceptability of remote prescribing and ‘medication-by-post’ in SRH.Study designAn online survey assessing attitudes towards remote management was distributed in three UK SRH clinics and via an integrated sexually transmitted infection (STI) postal self-sampling service. Logistic regressions were performed to identify potential correlates.ResultsThere were 1281 participants (74% female and 49% <25 years old). Some 8% of participants reported having received medication via post and 83% were willing to receive chlamydia treatment and contraceptive pills by post. Lower acceptability was observed among participants who were: >45 years old (OR 0.43 (95% CI 0.23–0.81)), screened for STIs less than once annually (OR 0.63 (0.42–0.93)), concerned about confidentiality (OR 0.21 (0.90–0.50)), concerned about absence during delivery (OR 0.09 (0.02–0.32)) or unwilling to provide blood pressure readings (OR 0.22 (0.04–0.97)). Higher acceptability was observed among participants who reported: previously receiving medication by post (OR 4.63 (1.44–14.8)), preference for home delivery over clinic collection (OR 24.1 (11.1–51.9)), preference for home STI testing (OR 10.3 (6.16–17.4)), ability to communicate with health advisors (OR 4.01 (1.03–15.6)) and willingness to: register their real name (OR 3.09 (1.43–10.6)), complete online health questionnaires (OR 3.09 (1.43–10.6)) and use generic contraceptive pills (OR 2.88 (1.21–6.83)).ConclusionsPostal treatment and entering information online to allow remote prescribing were acceptable methods for SRH services and should be considered alongside medication collection in pharmacies. These methods could be particularly useful for patients facing barriers in accessing SRH. The cost-effectiveness and implementation of these novel methods of service delivery should be further investigated.

BOC signals processing by two traditional correlator channels

2021 ◽  
pp. 5-17
Author(s):  
O.K. Mikhaylova ◽  
I.V. Korogodin
Keyword(s):  
Direct Method ◽  
Tracking System ◽  
Practical Importance ◽  
Reference Signal ◽  
Processing Algorithm ◽  
Statistical Characteristics ◽  
Navigation Systems ◽  
Signal Delay ◽  
Signal Processing Algorithm ◽  
To Receive

Problem statement. With the development of satellite navigation systems, new navigation BOC signals are being introduced. Since the structure of BOC signals differs from traditional BPSK signals, this complicates their processing, which may require hardware changes and often leads to the need to develop new ones. Objective. Synthesis and analysis of the BOC signal processing algorithm using two BPSK correlators, comparable in accuracy to the direct method. Results. The synthesis and analysis of the BOC signal delay tracking system using two correlators, originally designed to receive only BPSK-conducting signals, are carried out. The statistical characteristics of the delay discriminator are obtained. It is shown how the accuracy and sensitivity of the obtained delay tracking algorithm are correlated with respect to the reference algorithm, which assumes the use of a signal with a digital subcarrier in the reference signal of the correlator. The pull-in characteristic are obtained. Practical relevance. The processing algorithm BOC signals that doesn't require modification of the traditional correlators of the navigation receiver is presented. This algorithm is of great practical importance, since it allows for high-precision reception of modern BOC and AltBOC signals, despite the limitations characteristic of modern navigation equipment. For example, this algorithm allows to receive Galileo E5 signals using the popular NTLab NT1065 chip. A new signal pull-in algorithm is proposed. This algorithm allows to avoid abnormal tracking errors caused by the operation of the tracking system in the side zones of the s-curve. The pull-in characteristics for various receive conditions are given.

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