An optimal scheduling policy for upgraded software with updates

PurposeIn the current market scenario, software upgrades and updates have proved to be very handy in improving the reliability of the software in its operational phase. Software upgrades help in reinventing working software through major changes, like functionality addition, feature enhancement, structural changes, etc. In software updates, minor changes are undertaken which help in improving software performance by fixing bugs and security issues in the current version of the software. Through the current proposal, the authors wish to highlight the economic benefits of the combined use of upgrade and update service. A cost analysis model has been proposed for the same.Design/methodology/approachThe article discusses a cost analysis model highlighting the distinction between launch time and time to end the testing process. The number of bugs which have to be catered in each release has been determined which also consists of the count of latent bugs of previous version. Convolution theory has been utilized to incorporate the joint role of tester and user in bug detection into the model. The cost incurred in debugging process was determined. An optimization model was designed which considers the reliability and budget constraints while minimizing the total debugging cost. This optimization was used to determine the release time and testing stop time.FindingsThe proposal is backed by real-life software bug dataset consisting of four releases. The model was able to successfully determine the ideal software release time and the testing stop time. An increased profit is generated by releasing the software earlier and continues testing long after its release.Originality/valueThe work contributes positively to the field by providing an effective optimization model, which was able to determine the economic benefit of the combined use of upgrade and update service. The model can be used by management to determine their timelines and cost that will be incurred depending on their product and available resources.

Shakespeare and the Comedy of Enchantment

Shakespeare and the Comedy of Enchantment explores the encounter between comedy’s rationalizing dimensions and those extra-rational aspects that elude demystification and exert affective power, an encounter between what is explicable and what is inexplicable. In the context of modernist disenchantment, Shakespeare’s comedies showcase the play of wonder and doubt, leaving behind a sense of residual re-enchantment. The argument thus broadens the perspective of studies that align early modern comedy with developments in science and jurisprudence. As the comic action advances, elements of mystery accrue—uncanny coincidences; magical sympathies; inexplicable repetitions; psychic influences; and wonders, fears, and doubts about the meaning of events—all of whose effects linger after reason has apparently answered the play’s questions, leaving an aura of wonder and wondering. Comic enchantment works through certain devices, tropes, and motifs explored in the chapters: magical clowns who introduce non-realistic stop-time moments that alter the action; structural repetitions that suggest mysteriously converging destinies and opaque but providential outcomes; places with differing characteristics that frame encounters between the regulatory and the protean drives in human existence; desires, thoughts, and utterances that manifest comically monstrous realities, including objects and individuals; characters who return from the dead, facilitated by the desires of the living; play-endings that traffic in harmony and dissonance, yet which can make possible the irrational action of forgiveness. These matters are discussed with extensive reference to Renaissance and modern theories of comedy, and with comparisons to Italian and Tudor comedy.

A Prediction Method for Flow-Stop Time in Deep-Water Volatile Oilfields: A Case Study of Akpo Oilfield in Niger Delta Basin

Due to the difference in oil and water density, the wellhead pressure continues to decrease with water-cut rising in deep-water volatile oilfields. Once it is close to the lower limit, the production well will stop flowing. This phenomenon seriously affects the production and recoverable reserves. By taking the dynamic relative permeability which can reflect the macroscopic movement of oil and water in the reservoir as an intermediate bridge, production performance has been combined with dominant reservoir factors, including reservoir structure, reservoir connectivity, and heterogeneity. By the statistical analysis of actual data, this paper clarified the quantitative relationships between dominant reservoir factors and production performance and established the refined prediction methods for production dynamics including water-cut and liquid production rate. A prediction method for the wellhead pressure was further established, and the flow-stop time of single well can be accurately predicted. The results can be used in annual production forecast and recoverable reserve evaluation. This method had been successfully applied in Akpo oilfields in the Niger Basin. The results show that the production dynamics are significantly affected by reservoir factors in deep-water turbidite sandstone reservoir and the prediction method considering reservoir factors will be much more applicable. In deep-water volatile oilfields, the flow-stop risk of the production well in middle and high water-cut stages is very great and is mainly affected by the water-cut and liquid production rate. Judging from the application effect of Akpo oilfields, this method has high prediction accuracy and can be used to guide optimization and adjustment in deep-water oilfields.

ELEGY IN RUSSIAN AND TATAR POETRY OF THE XIX-EARLY XX-TH CENTURIES: THE CATEGORY OF TENSE

Статья посвящена сопоставительному исследованию жанра элегии и элегизма как самостоятельного модуса художественности в русской и татарской поэзии XIX-начала XX вв. в свете категории времени. Установлено, что элегия не вошла в круг канонических и неканонических жанров татарской литературы начала XX века, что значительно усложняет исходную ситуацию сопоставления национальных литератур. Сделан вывод о том, что исторически русская элегия существовала в художественном пространстве времени, в ее содержании особое звучание имел мотив переживания лирическим субъектом настоящего момента бытия в ценностном свете прошлого (В.И. Козлов, О.В. Зырянов, В.Э. Вацуро, М.Л. Гаспаров). Исследования ученых-востоковедов (Г.Э. Грюнебаум, Л. Масиньон, А.М. Шиммель) показали, что время в сознании восточного поэта как будто стремиться «оставаться на месте»; время здесь не линейное в своей протяженности, оно не определяется различиями границ прошлого, настоящего и будущего. Напротив, в нем особое место уделялось переживанию мгновений, причем не всегда расположенных в необратимой последовательности. Сделан вывод о том, что татарское художественное сознание, испытавшее воздействие традиций литератур Востока, имеет сходные черты мировосприятия, что в значительной мере обусловило уникальность пути становления элегического жанра в национальной литературе. Фактическую основу работы составил сопоставительный анализ элегии А.С. Пушкина «Прощанье» (1830) и стихотворения Дэрдменда «Әгәр барсаң, саба җил, безнең илгә» («Ветер утренний, если летишь в нашу сторону…»). Установлено, что произведение Дэрдменда отличается тонким элегическим звучанием. Последнее можно рассматривать как особый тип художественности, на основе которого возник диалог русской классики и татарской литературы в аспекте ценностной категории времени и ее важнейших художественных свойств. The article is devoted to the comparative study of the elegy genre and elegism as an independent mode of artistic expression in Russian and Tatar poetry of the XIX - early XX centuries in the aspect of tense. It is stated that elegy was not included in the field of canonical and non canonical genres of Tatar literature of the early XXth century and this causes some problems in the original situation of national literary comparison. It is concluded that historically Russian elegy existed in artistic sphere of tense and the motive of the lyric character’s experience of current moment in an aspect of value had a specific sound in its content (V.I. Kozlov, O.V. Zyryanov, V.E. Vatsuro, M.L. Gasparov). The orientalists’ studies (G.E. Griunebaum, L.Masinyon, A.M. Shimmel) showed that tense in the conscience of the oriental poet tends to “stop”; time here is not linear in its length, it is not marked by the differences of the past, present and future. In the contrary, special attention was paid to the experience of moments, not always arranged in an inversible sequence. The author comes to the conclusion that Tatar artistic mentality experienced the influence of oriental literature has similar features in worldview which determines the uniqueness of the way the elegiac genre formed in the national literature. The actual basis of the work is comparative analysis of A.S.Pushkin’s elegy “Farewell” (1830) and poems by Derdmend «Әgәr barsaң, saba җil, bezneң ilgә» (“If you go, morning wind, to our land”). It is stated that poem by Derdmend differs by its subtle elegiac sound. The latter can be viewed as a special type of artistry which serves as the basis for the dialogue of Russian classics and Tatar literature in the aspect of time value category and its most important artistic features.

Optimization of shut-in time before drilling for each strata system in the drilling pass area in Block G

After the A oilfield enters the ultra-high water cut period, the production level is high, the comprehensive water cut is high and the production level is high. In recent years, the number of new wells has increased considerably, affecting the increase in production year by year. Faced with these two contradictions, a new scientific and effective drilling gateway management model has been explored to reduce the impact of drilling gateways on production. This will have a very important guarantee for the realization of A oilfield's continued stable production. Based on the research and practice of the drill-off area in Block G, this paper determines the minimum injection stop time before drilling-off corresponding to each set of formations according to the bottom hole pressure change law of the injection-stop well.

Intellectualization of the urban and rural bus: The arrival time prediction method

To improve the intelligence of urban and rural buses, it is necessary to realize the accurate prediction of bus arrival time. This paper first introduced urban and rural buses. Then, the arrival time prediction was divided into two parts: road travel time and stop time, and they were predicted by the support vector regression method and k-nearest neighbor (KNN) method. A section of a bus route in Pingdingshan city of Henan province was taken as an example for analysis. The results showed that the method designed in this study had better accuracy, and the result was closer to the actual value, with a maximum error of 84 s, a minimum error of 10 s, an average error of 42.5 s, and an average relative error of 5.74%, which could meet the needs of passengers. The results verify the reliability of the designed method in predicting the arrival time of urban and rural buses, which can be popularized and applied in practice.

An Instructive Story About How a Byzantine Princess Bravely Looked Deep into the Abyss of Oblivion

An Instructive Story About How a Byzantine Princess Bravely Looked Deep into the Abyss of Oblivion Anna Comnena’s beginning of the Prologue to her Alexiad is a fine literary and rhetorical piece. It is about the problem how destructive the passing of time is, and for which the only obstacle can be to consolidate the achievements of the past in a literary work. Such a line of thought was usually interpreted in the terms of the author’s rhetorical topos. Most frequently, this topos occurs in ancient historiography whose formal features were continued by Greek historians of the Eastern Roman Empire (Byzantium). While not deyning that there is much to recommend in such an approach, the present paper tries also to pay attention to Anna’s life and stress the authenticity of her emotions. In this light the Preface to the Alexiad, while remaining an example of magnificent rhetorical argumentation, can also be seen as an authentic attempt ‘to stop’ time, an attempt made by an aging woman, conscious that this is the only chance to give meaning to her own life by preserving it in the memory of future generations, so, in a sense, to ‘immortalize’ it, given that it will be told in a written story, capable of surviving in time.