scholarly journals OPTIMIZATION MODEL FOR DISTRIBUTION OF APPLICATIONS IN MASS SERVICE SYSTEMS

2021 ◽  
Author(s):  
R. Lopatin ◽  
L. Smirnov ◽  
Svetlana Evdokimova

In many clinics, new branches are opening today, which include a list of services for the us-er of the electronic registry. At the same time, it is necessary to take into account the schedules of counseling and receiving patients in the process of work, where the object of consideration is a high-quality schedule without the presence of time overlays.

Author(s):  
Masoud Keighobadi ◽  
Maryam Nakhaei ◽  
Ali Sharifpour ◽  
Ali Akbar Khasseh ◽  
Sepideh Safanavaei ◽  
...  

Background: This study was designed to analyze the global research on Lophomonas spp. using bibliometric techniques. Methods: A bibliometric research was carried out using the Scopus database. The analysis unit was the research articles conducted on Lophomonas spp. Results: Totally, 56 articles about Lophomonas spp. were indexed in the Scopus throughout 1933-2019 ( 87 years ) with the following information: (A) The first article was published in 1933; (B) 21 different countries contributed in studies related to Lophomonas spp.; (C) China ranked first with 16 publications about Lophomonas spp.; and (D) “Brugerolle, G” and “Beams, H.W.” from France and the US participated in 4 articles respectively, as the highest number of publications in the Lophomonas spp. network. Discussion: After 87 years, Lophomonas still remains unknown for many researchers and physicians around the world. Further studies with high quality and international collaboration are urgently needed to determine different epidemiological aspects and the real burden of the mysterious parasite worldwide.


2018 ◽  
Vol 21 (04) ◽  
pp. 1850022
Author(s):  
Yaseen S. Alhaj-Yaseen ◽  
Kean Wu ◽  
Leslie B. Fletcher

This paper examines the changes in earnings quality of registered American Depositary Receipts (ADRs) as a result of switching accounting standards. We aim to shed light on the potential impact of International Financial Reporting Standard (IFRS) adoption on US firms. A suboptimal approach to achieve this goal is through examination of US firms’ surrogates such as ADRs. Unlike previous studies, we made a distinction between registered and unregistered ADRs and affirmed that registered ADRs are the closest surrogates with which to conduct our analysis because they are exclusively required to adhere to the Securities and Exchange Commission (SEC)’s stringent disclosure requirements. When cross-listing their equity on the US exchanges, foreign issuers can file their financial reports with the SEC using IFRS, US GAAP (generally accepted accounting principles), or their domestic GAAP with reconciliation to US GAAP. An improvement in earnings quality is documented when ADRs adopt US GAAP or IFRS versus domestic GAAP. However, when the comparison is made between US GAAP and IFRS, no difference in earnings quality is documented. These results indicate that switching to high-quality accounting standards is likely to improve earnings quality. This improvement is maximized when the difference between reporting standards is high and minimized if otherwise. Our conclusion is that the adoption of IFRS in the US is unlikely to change earnings quality of local issuers. Moreover, we drew a distinction between reconciliation with and adoption of high-quality accountings standards and find that while the former can enhance earnings quality, the latter can further improve it.


Author(s):  
Ю.В. Горгуца

При проектировании рейдовых причалов, строительство которых получило широкое развитие в настоящее время, невозможно воспользоваться методами, предлагаемыми ныне действующими Нормами технологического проектирования, так как они были выполнены для традиционных защищённых акваторий и опираются на статистический материал, полученный по существующим портам. Для разработки методов определения простоев судов при обработке судов на рейдовых причалах с учётом потока помех от метеофакторов (штормов) как потока случайных событий в данной статье описывается исследование новых моделей систем массового обслуживания. Используется метод суперпозиций – находятся решения для простых моделей, которые затем используются для получения решений по более сложным моделям. Первоначально рассматривается простейшая модель, состоящая из потоков вызовов (штормов) и прибора (порта). Поток вызовов - пуассоновский. Время обслуживания – произвольное с преобразованием Лапласа-Стилтьеса Полученные результаты используются для исследования модели с потоками помех от ветров двух различных направлений. Далее исследуется однолинейная модель с «ненадёжным» прибором. Входящий поток – пуассоновский поток подходящих к порту судов. Время обслуживания - длительность интервалов времени между освобождением места у причала для судна, ожидающих на рейде. Выход из строя прибора, как в свободном, так и в занятом обслуживанием состоянии определяется наступлением шторма – событием пуассоновского потока с интервалами между событиями – интервалами между наступлением штормов. Длительность восстановления работоспособности прибора – определяемая в первой модели длительность простоя причала из-за воздействия метеофакторов. Суда, оказавшиеся в порту при наступлении шторма «дообслуживаются» после его окончания Итоговая модель – многоканальная с параллельно работающими приборами (причалам) и экспоненциальным временем обслуживания судов. Полученные результаты сравнивались со статистическими и показали их высокую сходимость, что доказывает их достоверность. While designing offshore terminals, which are being built quite widely in recent time, it is impossible to use methods, proposed by current technological design norms, because they were created for traditional protected waters and are based on statistical data, acquired by existing ports. This article describes the research of new models of mass service systems to develop methods of defining demurrage while processing vehicles on offshore terminals, taking into account disturbance flow from weather factors (storms) as flow of random events. Method of superpositions is used - to find solutions for simple models, which are used afterwards for getting solutions for more complicated models. Initially the basic model is reviewed, consisting of flow of challenges (storms) and device (port). Challenges flow is Poisson. Service time - arbitrary with transformation of Laplace-Stiltjes. Results acquired are used for researching the model with disturbance flows from windows of various directions. Next the unilineal model with “unreliable” device is researched. Incoming flow is Poisson flow of incoming vehicles. Service time - length of time intervals between berths exemption for vehicles awaing on raid. Device failure, both in free and in maintenance mode was defined by storm incoming - the event of Poisson flow with intervals between events - intervals between storms. Duration of device efficiency recovery - is the defined in the first model duration of terminal demurrage due to weather influence. Vessels, caught up in the port during storm will be maintained after its end. Final model is multi-channel one with working devices (terminals) and exponential time of vessel service. Acquired results have been compared with statistical data, which showed they high convergence, proving their reliability.


2020 ◽  
Vol 12 (17) ◽  
pp. 7185
Author(s):  
Shinn-Jou Lin ◽  
Guey-Shin Shyu ◽  
Wei-Ta Fang ◽  
Bai-You Cheng

Taiwan has promoted bicycle tourism for nearly 20 years, and the bicycle paths it has constructed throughout the island are diverse in design. In the present study, an evaluation scale for bicycle path sightseeing potential was devised with a focus on the overall service quality of the paths; 30 popular bicycle paths were analyzed using a field survey, with expert consultation on quantitative indicators, and a qualitative analysis entailing interviews with people regarding the bicycle paths. A multivariate statistical analysis was performed on the quality of the service systems for these paths. The results revealed that the quality of these service systems is influenced by four principal components, namely, landscape attractiveness, image management, bicycle-specific paths, and accessibility, for a total explanatory power of 76.21%; the individual explanatory power of these components was 25.89%, 21.49%, 16.81%, and 12.03%, respectively. Bicycle path conditions, service maintenance, and cleanliness and bicycle specificity are required for future high-quality bicycle paths; diverse bicycle rental services and bicycle types, entrance visibility, and ecological introduction boards along paths are value-added factors to bicycle path quality.


1970 ◽  
Vol 2 (02) ◽  
pp. 287-322
Author(s):  
T. Gergely ◽  
I. N. Tsukanow ◽  
I. I. Yezhow

In this work Markov chains governed by complicated processes are introduced and investigated (Section 1). In Section 2 an ergodic theorem for these processes is formulated, while in Section 3 the sojourn time of the process in a fixed region is studied; in Section 4 some examples are considered. The processes studied are of practical importance in the description of mass service systems and the theory of reliability for which the time intervals between successive demands cannot be assumed to be mutually independent random variables. It is shown that the dependence parameter r of these processes, if it is sufficiently large, allows us to formulate a relationship between the time intervals in question.


Author(s):  
Steffen Paeper ◽  
Bryce Brown ◽  
Thomas Beuker

A new generation of geometry sensor for ILI tools has been developed. This sensor provides highly accurate geometry data of the internal pipe contour. The technology uses the benefits of a touchless distance measurement in combination with the advantages of a mechanical caliper arm. The complementary interaction allow the measurement of accurate data under demanding operational conditions. The geometry sensor technology can be combined with a navigation unit and the high resolution MFL inspection technology on so called multi-purpose ILI-tools. The merging of different inspection tasks on a single tool is an economic solution to create and add to an ILI-database for integrity management. Field experience with this new technology will be discussed, based on more than 500 miles inspected pipeline. Most inspections were performed in the US and Canada. The operational performance of the sensors justified the new design.


2000 ◽  
Vol 29 (4) ◽  
pp. 600-602 ◽  
Author(s):  
Suzanne Romaine

The authors have compiled a truly impressive amount of information pertaining to bilingualism and bilingual education in this single-volume, full-color encyclopedia. Attractively produced on high-quality paper, the book contains 117 main topics, 390 text boxes, 340 pictures, 35 maps, 98 graphs, and 14 diagrams. There are also a glossary, a bibliography containing more than 2,000 entries, and an index. The book is organized into four sections – “Individual bilingualism,” “Languages in society,” “Languages in contact in the world” (with “Language maps of the world”), and “Bilingual education” – each with many subsections.


2020 ◽  
Vol 38 (15_suppl) ◽  
pp. 11039-11039
Author(s):  
Fernando Cristobal Diaz ◽  
Ismael Pavel Polo Perez ◽  
Dailis Barbara Corria Cedeno ◽  
Michael LaPelusa ◽  
Dave Patel ◽  
...  

11039 Background: Online health information is a central part of how patients learn about a cancer diagnosis. Involving patients in shared decision making is associated with better outcomes. Previous studies have identified a lack of high-quality, reliable online material related to cancer in English using validated tools. As the number of Spanish speaking people in the US, and globally, continues to grow, it is important that high-quality, reliable information is available in Spanish. No studies have evaluated online breast cancer informational videos in Spanish. Methods: A search using the phrase “cancer de mama” (translation: “breast cancer”) was conducted on YouTube. The first 200 video URLs were included for study with duplicates, non-Spanish, and non-informational videos excluded. The videos were characterized by several variables, including year of upload, country of origin, content discussed, views, likes, dislikes, and typology group (“Personal”, “Professional”, “Health Portal”, etc.). The quality and reliability of these videos were examined by measuring Global Quality Scale (GQS), a 5-point DISCERN score, and JAMA scores. Results: 173 videos met inclusion criteria in the study. The majority of the videos which discussed signs and symptoms were uploaded by a ‘commercial’ typology, risk factors mainly uploaded by ‘health portals’ (21%), and treatment options by ‘professionals’ (50%). Relatively few videos have discussed reconstruction, survivorship, and breast cancer in men. 57% of these videos were uploaded prior to 2017, 36% by different personnel followed by government/news agency (25%), and professionals (23%). There was no significant difference between number of views (p-value: 0.526) and likes (p-value: 0.122) among the five typology groups. Professional videos had the highest average GQS (2.55), DISCERN score (1.90), and JAMA score (2.05). Personal videos had the lowest average GQS (1.98) and DISCERN score (1.06). GQS, DISCERN, and JAMA scores were all statistically significantly different between each typology. Conclusions: The majority of online breast cancer videos in Spanish are older than 3 years and produced outside the US. They are generally of poor quality and reliability, although higher in professional videos. Given the lack of current, high-quality, and reliable informational videos available, needs assessments should be conducted to identify the most useful learning resources for Spanish-speaking patients. Specialists should consider uploading educational videos to improve the paucity of high-quality, reliable information online.


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