scholarly journals MODELING THE PLAN OF THE TRANSPORTATION PROCESS DURING THE MORNING RUSH HOUR ON THE CLOSED BOLSHAYA KOLTSEVAYA LINE OF THE MOSCOW METRO

2021 ◽  
Vol 7 (4) ◽  
pp. 584-616
Author(s):  
A. I. Safronov ◽  
◽  
E. V. Lysenko ◽  

The article analyzes the characteristics of the construction of the Bolshaya Koltsevaya line (Large Circle Line) of the Moscow Metro from the point of view of the transportation process planning. The authors have studied the characteristics of all operating depots of the Moscow Metro that justify the plans for the construction of two new depots (Aminievsky and Nizhegorodsky), as well as the reconstruction of one of the existing depots (Zamoskvoretsky), located within the city limits of Moscow – inside the Moscow Automobile Ring Road (MKAD), in the vicinity of the Third Transport Ring and beyond. For the needs of modeling, the station-to-station length of the closed Bolshaya Koltsevaya line was measured, subject to the transfer of a train traffi c section from the Delovoy Tsentr station to the Khoroshevskaya station of the projected Rublyovo-Arkhangelskaya metro line. Based on the measurement fi ndings, the station-to-station travel times along the closed Bolshaya Koltsevaya line were calculated, which subsequently made it possible to determine the number of electric rolling stock units required to service the Bolshaya Koltsevaya line in the morning rush hour

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Matias Escuder ◽  
Martin Tanco ◽  
Andres Muñoz-Villamizar ◽  
Javier Santos

PurposeUrban logistics presents a series of challenges, as the interests of the different stakeholders are not always aligned. The aim of this research is to explore the potential of applying Lean principles to reduce waste in urban logistics.Design/methodology/approachAs a structure for “going to gemba,” the authors implemented the shadowing technique to better understand the perspective of companies distributing products in the city of Montevideo, Uruguay. Then, meetings were conducted to validate the observations by the people shadowed.FindingsThe results show that most of shipper's time is dedicated to waiting (59%), which is followed by driving (22%), and only a small section of time was dedicated to unloading and verification activities (19%). Although collaborative solutions are needed along with the different stakeholders, this research highlights how deploying Lean thinking can improve significantly urban logistics achieving up to 25% improvement in the number of stores served per shift.Practical implicationsFrom an academic point of view, this study emphasizes the importance of continue applying and evaluating the Lean practices into transportation contexts. From a company's perspective, the authors have presented a list of propositions that can be implemented for carriers in order to reduce waste and/or improve the efficiency of the urban transportation process.Originality/valueBased on the literature review carried out, the subject study of Lean and its application to urban logistics remains mostly unexplored in the scientific literature.


Author(s):  
Daniele Castrizio

The paper examines the coins found inside the Antikythera wreck. The wreck of Antikythera was discovered by chance by some sponge fishermen in October 1900, in the northern part of the island of Antikythera. The archaeological excavation of the wreck has allowed the recovery of many finds in marble and bronze, with acquisitions of human skeletons related to the crew of the sunken ship, in addition to the famous “Antikythera mechanism”. Various proposals have been made for the chronology of the shipwreck, as well as the port of departure of the ship, which have been based on literary sources or on the chronology of ceramic finds. As far as coins are concerned, it should be remembered that thirty-six silver coins and some forty bronze coins were recovered in 1976, all corroded and covered by encrustations. The separate study of the two classes of materials, those Aegean and those Sicilian allows to deepen the history of the ship shipwrecked to Antikythera. The treasury of silver coinage is composed of thirty-six silver cistophoric tetradrachms, 32 of which are attributable to the mint of Pergamon and 4 to that of Ephesus. From the chronological point of view, the coins minted in Pergamon have been attributed by scholars to the years from 104/98 B.C. to 76/67 B.C., the date that marks the end of the coinage until 59 B.C. The coins of Ephesus are easier to date because they report the year of issue, even if, in the specimens found, the only legible refers to the year 53, corresponding to our 77/76 B.C., if it is assumed as the beginning of the era of Ephesus its elevation to the capital of the province of Asia in 129 B.C., or 82/81 B.C., if we consider 134/133 B.C., the year of the creation of the Provincia Asiana. As for the three legible bronzes, we note that there are a specimen of Cnidus and two of Ephesus. The coin of the city of Caria was dated by scholars in the second half of the third century B.C. The two bronzes of Ephesus are dated almost unanimously around the middle of the first century B.C., although this fundamental data was never considered for the dating of the shipwreck. The remaining three legible bronzes from Asian mints, two from the Katane mint and one from the Panormos mint, belong to a completely different geographical context, such as Sicily, with its own circulation of coins. The two coins of Katane show a typology with a right-facing head of Dionysus with ivy crown, while on the reverse we find the figures of the Pii Fratres of Katane, Amphinomos and Anapias, with their parents on their shoulders. The specimen of Panormos has on the front the graduated head of Zeus turned to the left, and on the verse the standing figure of a warrior with whole panoply, in the act of offering a libation, with on the left the monogram of the name of the mint. As regards the series of Katane, usually dated to the second century B.C., it should be noted, as, moreover, had already noticed Michael Crawford, that there is an extraordinary similarity between the reverse of these bronzes and that of the issuance of silver denarii in the name of Sextus Pompey, that have on the front the head of the general, facing right, and towards the two brothers from Katane on the sides of a figure of Neptune with an aplustre in his right hand, and the foot resting on the bow of the ship, dated around 40 B.C., during the course of the Bellum siculum. We wonder how it is possible to justify the presence in a wreck of the half of the first century B.C. of two specimens of a very rare series of one hundred and fifty years before, but well known to the engravers of the coins of Sextus Pompey. The only possible answer is that Katane coins have been minted more recently than scholars have established. For the coin series of Panormos, then, it must be kept in mind that there are three different variants of the same type of reverse, for which it is not possible to indicate a relative chronology. In one coin issue, the legend of the ethnic is written in Greek characters all around the warrior; in another coin we have a monogram that can be easily dissolved as an abbreviation of the name of the city of Panormos; in the third, in addition to the same monogram, we find the legend CATO, written in Latin characters. In our opinion, this legend must necessarily refer to the presence in Sicily of Marcus Porcius Cato of Utica, with the charge of propraetor in the year 49 B.C. Drawing the necessary consequences from the in-depth analysis, the data of the Sicilian coins seem to attest to their production towards the middle of the first century B.C., in line with what is obtained from the ceramic material found inside the shipwrecked ship, and from the dating of the coins of Ephesus. The study of numismatic materials and a proposal of more precise dating allows to offer a new chronological data for the sinking of the ship. The presence of rare bronze coins of Sicilian mints suggests that the ship came from a port on the island, most likely from that of Katane.


Vestnik MEI ◽  
2021 ◽  
Vol 2 (2) ◽  
pp. 60-70
Author(s):  
Viktor D. Tulupov ◽  
◽  
Mikhail A. Sleptsov ◽  
Aleksandrs A. Briedis ◽  
◽  
...  

The problem of electric rolling stock traction machinery failures caused by electrical erosion of bearings is addressed. Damages inflicted to traction machinery bearings as a result of electric current flowing through them have been known since long ago. In recent time, however, damages of this kind have become more frequent, because frequency and voltage converters for control of three-phase inductor motors are widely used in the electric rolling stock. An overview of factors causing the occurrence of stray currents generated in frequency converter driven traction motors and sources of these currents is presented. Electric current flows through rolling bearings in the area of the contact between the rolling elements with inner and outer rings, thus causing damage to the bearing metal components' rolling surfaces and degrading the quality of lubricants. To study and analyze the currents through bearings, the stray capacitances existing in traction machines are determined, and their calculation methods are defined, the necessity of which is stemming from the fact that these capacitances influence the generation of parasitic currents. The stray capacitances in traction machines include the capacitance between the stator windings and the stator core pack, the capacitance between the stator windings and the rotor, the capacitance between the rotor and the stator core pack, and the capacitances of the bearings. From the electrical point of view, bearings may also be regarded as capacitances. As long as there is a continuous lubricant film between the inner ring and outer rings and the rolling elements, the bearings behave as capacitors. A difference of potentials across the bearing elements may lead to electrostatic discharges and, hence, to discharge currents through the bearings. One of possible ways to enhance the reliability of traction machine bearing units is to use insulated bearings. The change in the impedance of bearings with ceramic coating and hybrid rolling elements depending on the applied voltage frequency and operating temperature is calculated and analyzed. Conclusions regarding the expediency of using hybrid bearings having rings made of bearing steel and rolling elements made of bearing silicon nitride (Si3N4) are drawn.


Author(s):  
Lusine Sargsyan ◽  
◽  
Davit Ghazaryan ◽  
◽  

This study is dedicated to the Armenian manuscript and printed Amulet1 of the Armenian Diocese of Baghdad (DAOB). In this collection of early printings, there are two printed Amulets in scroll (Pr. n. 14, second half of the 19th century and Pr. n. 15, A.D. 1716). The third Amulet is a manuscript written in 1736 in the city of Erzrum (Karin) for a certain Ohan (Ms. n. 13). The scanned copies of these amulets are currently available through the website of Hill Museum and Manuscript Library (HMML).2 Since this paper is the first study of these amulets, it presents them in terms of codicology and bibliographical study and discusses their decoration. The study of some iconographic details will help to reveal the practice of using amulets and their meaning, considering them as a representation of Armenian “folklore-art”, since scribes and miniaturists were partly free to choose texts and decorate them, even they were mostly works of the priesthood.3 It should be noted that as artifacts of the same genre, having a purpose of protection of their owners using incantations and prayers, very often the content and decoration of these three Amulets have similarities. From this point of view, Ms. n. 13 (A.D. 1736) and Pr. n. 15 (A.D. 1716) are more relevant to each other both in content and, accordingly, in decoration. A selection of prayers and illustrations to them show almost the same structure, and for the printed Amulet, we can certainly argue that such structure was typical (but not limited) for the printed Amulets in the Armenian tradition from the 18th to 19th centuries. Despite some similarities with two previous Amulets, the Pr. n. 14 (19th century) represent another structure of content and its decoration. It is enriched with prayers and illustrations which does not exist in mentioned above two examples of the 18th century. E.g. engravings depicting the life of Christ (Annunciation, Birth of Jesus Christ, Baptism, Resurrection, etc.), or portraits of the evangelists, accompanied by the passages from their Gospels. Our research shows that the publishers of this Amulet had an eighteenth-century prototype and took an innovative approach using Western art engravings.


Encyclopedia ◽  
2021 ◽  
Vol 1 (3) ◽  
pp. 812-821
Author(s):  
Mirko Vagnoni
Keyword(s):  

Robert of Anjou King of Sicily (1309–1343). Robert of Anjou was the third king of the Angevin dynasty on the throne of Sicily. He ruled from 1309 to 1343, but, in these years, Sicily was under the domain of the Aragonese dynasty and, hence, his authority was limited to the continental land of the Kingdom and his court was mainly focused in the city of Naples. From an iconographic point of view, he is particularly interesting because, between his official representations (namely, commissioned directly by him or his entourage), he was the first king of Sicily who made use not only of stereotyped images of himself, but also of physiognomic portraits. In particular, this entry focuses on these latter items, comprising the following four artworks: Simone Martini’s altarpiece, the Master of Giovanni Barrile’s panel, the Master of the Franciscan tempera’s canvas, and the so-called Lello da Orvieto’s fresco.


Author(s):  
Nikolay Astashkov ◽  
Yuriy Belogolov

The systems being developed, aimed at improving the transportation process, predetermine the increase in the reliability of electric rolling stock, its elements and systems.


2021 ◽  
Vol 13 (2) ◽  
pp. 723-731
Author(s):  
Dr. Muna Salah Hasan

The city of Najaf is an environment full of scholars, writers and poets, and this benevolent city has produced stallions of poets, including the poet Sheikh Ahmed Al-Dujaili (1924-1991 AD), whose poetic output I chose in his Diwan (palms) and the significance of the place in it is the subject of this research. Extrapolation of the historical, social and political context in which the poetic experience was born and its impact and influence on the place and an attempt to dismantle its connotations, structures and forms of presence in the text from the poet's relationship with the place and his artistic vision of it. The poets looked at the place with a creative view that transcends the material to reveal its emotional repercussions generated as a result of the active relationship between the poet and the place. And a place that enables him to determine the dimensions of his experience and give it the space in which it was formed. Recent critical studies have tended in recent years to study spatial structures in the narrative narratives, which have taken the place as a tool for dealing with and treating, and as a means of relying on literary works, whether those related to poetry or the novel. Skipping theorizing and defining the terms and definitions related to the place from a philosophical, linguistic and literary point of view, because I think that they do not enrich the research with anything, especially since many studies have preceded us in this field. The research consists of three axes, the first axis: talks about the life of the poet Ahmed Al-Dujaili, the second axis: the place between the poetic and the poet, and the third axis: the semantics of the place in his poetry, including: religious places, political places, scientific places, military places, and finally natural places, then the conclusion, the margins, the list of sources and from God Good luck and payment.


2017 ◽  
Vol 5 (2) ◽  
pp. 109-120
Author(s):  
Cecília Avelino Barbosa

Place branding is a network of associations in the consumer’s mind, based on the visual, verbal, and behavioral expression of a place. Food can be an important tool to summarize it as it is part of the culture of a city and its symbolic capital. Food is imaginary, a ritual and a social construction. This paper aims to explore a ritual that has turned into one of the brands of Lisbon in the past few years. The fresh sardines barbecued out of doors, during Saint Anthony’s festival, has become a symbol that can be found on t-shirts, magnets and all kinds of souvenirs. Over the year, tourists can buy sardine shaped objects in very cheap stores to luxurious shops. There is even a whole boutique dedicated to the fish: “The Fantastic World of Portuguese Sardines” and an annual competition promoted by the city council to choose the five most emblematic designs of sardines. In order to analyze the Sardine phenomenon from a city branding point of view, the objective of this paper is to comprehend what associations are made by foreigners when they are outside of Lisbon. As a methodological procedure five design sardines, were used of last year to questioning to which city they relate them in interviews carried in Madrid, Lyon, Rome and London. Upon completion of the analysis, the results of the city branding strategy adopted by the city council to promote the sardines as the official symbol of Lisbon is seen as a Folkmarketing action. The effects are positive, but still quite local. On the other hand, significant participation of the Lisbon´s dwellers in the Sardine Contest was observed, which seems to be a good way to promote the city identity and pride in their best ambassador: the citizens.


2020 ◽  
Vol 8 (2) ◽  
pp. 13
Author(s):  
Ankita Pandey

Guwahati derives its name from the Assamese word “Guwa” means areca nut and “Haat” means market. However, the modern Guwahati had been known as the ancient Pragjyotishpura and was the capital of Assam under the Kamrupa kingdom. A beautiful city Guwahati is situated on the south bank of the river Bramhaputra. Moreover, It is known as the largest city in the Indian state of Assam and also the largest metropolis in North East India. It has also its importance as the gateway to the North- East India. Assamese and English are the spoken languages in Guwahati.  In 1667, the Mogul forces were defeated in the battle by the Ahom forces commanded by Lachut Barphukan. Thus, in a sense Guwahati became the bone of contention among the Ahoms, Kochas and the Moguls during the medieval period.  Guwahati the administrative headquarters of Lower Assam with a viceroy or Barbhukan was made by the Ahom king.  Since 1972 it has been the capital of Assam. The present paper will discuss the changes happened in Guwahati over the period of late 1970s till the present time. It will focus on the behavior of people, transformed temples, Panbazar of the city, river bank of Bramhaputra, old Fancy Bazaar, chaotic ways, festivals and seasons including a fifth man made season etc. It will also deal how over the years a city endowed with nature’s gifts and scenic views, has been changing as “a dirty city”. Furthermore, it will also present the insurgencies that have barged into the city. The occurrence of changes will be discussed through the perspective and point of view of Srutimala Duara as presented in her book Mindprints of Guwahati.


2012 ◽  
Vol 5 (2) ◽  
pp. 109
Author(s):  
Besin Gaspar

This research deals with the development of  self concept of Hiroko as the main character in Namaku Hiroko by Nh. Dini and tries to identify how Hiroko is portrayed in the story, how she interacts with other characters and whether she is portrayed as a character dominated by ”I” element or  ”Me”  element seen  from sociological and cultural point of view. As a qualitative research in nature, the source of data in this research is the novel Namaku Hiroko (1967) and the data ara analyzed and presented deductively. The result of this analysis shows that in the novel, Hiroko as a fictional character is  portrayed as a girl whose personality  develops and changes drastically from ”Me”  to ”I”. When she was still in the village  l iving with her parents, she was portrayed as a obedient girl who was loyal to the parents, polite and acted in accordance with the social customs. In short, her personality was dominated by ”Me”  self concept. On the other hand, when she moved to the city (Kyoto), she was portrayed as a wild girl  no longer controlled by the social customs. She was  firm and determined totake decisions of  her won  for her future without considering what other people would say about her. She did not want to be treated as object. To put it in another way, her personality is more dominated by the ”I” self concept.


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