bluuebunny/crossref_metadata_2025 huggingface dataset:
Explicit Solutions in the Problem of Sound Isolation by Using Multilayered Structures with the Normal Wave Propagation
Authors: Sumbatyan Mezhlum A. , Chernikova Mariya V.
Published: July 2024

The problem of sound isolation at ultra-low frequencies (30–200 Hz) by using multilayered structures is con-sidered, taking into account the normal wave propagation and an arbitrary number of layers. It is assumed that the multilayered structure consists of parallel acoustic layers, connected to each other along vertical boundary lines; acoustic half-spaces (air) are located to the left and right of the structure. For the problem, we define the acoustic parameters of the structure. The wave equations of the harmonic process are described for the left and right half-spaces of the structure, using the Helmholtz equation and a system of linear algebraic equations with given boundary conditions. Besides, explicit analytical solutions are obtained to find the transmission coefficient (transparency coefficient), with an arbitrary number of layers. Examples of solution for low-frequency sound absorption for building structures with different numbers of layers of alternating building materials and air spaces are considered. The effectiveness of using mixed structures, in which air layers are sandwiched between high impedance layers, for low-frequency sound absorption has been confirmed by assessing the level of noise reduction.
Electric Field Structure in the Convective-Turbulent Atmospheric Surface Layer
Authors: Belousova Olga V. , Timoshenko Dmitry V. , Kupovykh Gennady V.
Published: July 2024

Electrodynamic models of the surface layer of the atmosphere, taking into account turbulent and convective transport, are constructed and studied. The models are based on the so-called total current equation derived from the equations of the theory of the electrode effect in the atmosphere. From the point of view of mathematics, this is a partial differential equation of a parabolic type with variable coefficients. Since in this type of equations the differential operator is not necessarily the Sturm-Liouville operator, in appropriate cases it is necessary to use different approaches to integrating the total current equation. This, in turn, makes it necessary to consider various hypotheses about the ratio of the intensities of local factors that affect the structure of the equation. The paper considers several cases of the model corresponding to the convective turbulent and convective-turbulent electrode layer. Analytical solutions of the stationary equation of the total electric current are obtained. in various approximations. Electric field strength profiles in the surface layer of the atmosphere for various physical conditions are constructed and studied.
THE IMAGE OF CHILDHOOD IN THE STORY BY YU.P. KAZAKOV “IN A DREAM YOU CRIED BITTERLY”: CHEKHOV'S TRADITIONS
Authors: Sorokina Marina V. , Tropkina Nadezhda E.
Published: July 2024

The article examines the image of childhood in Yu.P. Kazakov's story “In a dream you cried bitterly” in line with the Chekhov tradition, analyzes the deep connections of the artistic principles of the two writers. The research highlights Yu. P. Kazakov’s interest in Chekhov's work and similarity of the genre systems of two authors. There have been established the origins of this community, which is determined by the attraction of both A.P. Chekhov and Yu.P. Kazakov to lyrical prose. The author analyzes the features of the Chekhov’s type of narrative with its inherent frivolity and an open ending in the story of Yu.P. Kazakov “In a dream you cried bitterly”. It is proved that Chekhov's traditions played a significant role in the formation of the topos of childhood in the lyrical prose of Yu.P. Kazakov.
IDIOMATIC MEANING AS A COGNITIVE COMLEX (ON THE EXAMPLE OF ENGLISH IDIOMS)
Authors: Milkevich Yelena S.
Published: July 2024

The idiomatic meaning of phraseological units is a complex informative unity, which causes difficulties in its study. Traditional linguistics considers this meaning to be unmotivated by its structural elements, but the cognitive approach allows us to reveal its cognitive motivation. In cognitive linguistics idiomaticity can be represented as a cognitive complex. It consists of interaction between source-concepts (B) and target-concepts (A), which can be metaphoric (model A IS B) or metonymic (model B FOR A), or even metaphtonymic in cases when it is difficult to distinguish between metaphor or metonymy. The third element of the cognitive complex is our conventional knowledge of the world based on our perception, encyclopaedic knowledge or cultural preferences. It helps to prove the correctness of the analysis and the interpretation of the results. In this article we apply the cognitive analysis to two English idioms with lexemes denoting parts of the body. Such idioms better illustrate the cognitive hypothesis of the embodied mind. The aim of the conducted research is to show the idiomatic meanings of the two idioms as cognitive complexes which consist of metaphor, metonymy and our empirical knowledge. The result of the research is: in the cognitive complex of the first idiom to have a finger in every pie we can single out 5 models of metaphor and 4 models of metonymy as the cognitive interaction between the source-concepts FINGER, PIE, EVERY and the target-concepts INVOLVEMENT, ACTIVITIES. The cognitive complex of the idiom to keep one’s nose clean consists of the interaction between the source-concepts KEEP, NOSE, CLEAN and the target-concepts TO BEHAVE WELL, TO STAY OUT OF TROUBLE, which results in 2 models of metaphor and 5 models of metonymy. So, the cognitive analysis gives deep and overall understanding of the complex structure of idiomatic meaning. We use our empirical knowledge to interpret the interaction between concepts.
ETHNICAL VIEW OF THE WORLD IN THE REGIONAL MEDIA ADVERTISING
Authors: Kopot Lilia V.
Published: July 2024

The article deals with specific features of the ethnical view of the world in advertising accounting for regional differences. The definition of the concept of an advertising text with regional differences alongside with the concepts of ethnicity, ethnic identity, ethnic worldview in regional media advertising are analyzed on the linguoculturological approach and are presented in the article. Some domestic and foreign views on the study of identity in general are highlighted; linguistic and nonlinguistic ways of explicating the ethnic view of the world in advertising accounting for regional differences are established. Observations of the ethnic view of the world of the people of the region in question in advertising texts as a special ethno-semiotic space that convey lore about the goods/services of the world through the prism of the culture elements of the ethnic group in terms of signs are made. It is concluded that advertising accounting for regional differences making an appeal to semiotics of the ethnic identity of the consumer provides some additional opportunities to stand against the destructive influence of globalization processes promoting the consolidation and maintaining the unique character of the cultures and the integrity of the peoples of the Russian Federation.
IRONY IN A. I. SOLZHENITSYN'S MEMOIRS
Authors: Altynbaeva Gulnara M.
Published: July 2024

The article presents the forms of irony in the memoir discourse of A.I. Solzhenitsyn, analyzes their functions. The writer's ironic thinking is shown at the compositional, problematic, and stylistic levels of the memoirs in the books “The Oak and the Calf” and “Between Two Millstones”. The author of the article proves that with the help of irony as a stylistic device Solzhenitsyn expresses his author's position and his personal attitude to the events and people, but irony is not the basis of Solzhenitsyn's thinking as a Christian writer and a realist writer.
Możliwości występowania naturalnych złóż wodoru w warunkach polskich
Authors: Matyasik Irena ,   Instytut Nafty i Gazu – Państwowy Instytut Badawczy, Ciechanowska Maria ,   Instytut Nafty i Gazu – Państwowy Instytut Badawczy
Published: July 2024

W artykule przedstawiono wodór naturalny jako potencjalne bezemisyjne źródło energii odnawialnej, która w transformacji energetycznej całej gospodarki ma do odegrania niezwykle ważną rolę. Omówiono drogi migracji i akumulacji wodorowych. Podano przykłady występowania wodoru w różnych typach środowiska naturalnego i w różnych strukturach litologiczno-stratygraficznych, także na obszarach oceanicznych i w strefach występowania podwyższonej aktywności wulkanicznej. Przedstawiono źródła pochodzenia wodoru naturalnego, z których za najważniejsze przyjmuje się proces serpentynizacji, typowy dla skał ultrazasadowych bogatych w żelazo. Obecnie uważa się, że proces ten może generować aż 80% wodoru występującego na Ziemi. Innym procesem uczestniczącym w produkcji wodoru jest radioliza, zachodząca w skałach zawierających pierwiastki promieniotwórcze (m.in. U, Th), emitujące promieniowanie jonizujące i powodujące rozszczepianie cząstek wody. W czasie tej reakcji uwalniany jest wodór. Zaprezentowano wybrane prace badawcze prowadzone w Polsce na przestrzeni lat, w których zwrócono uwagę na obecność wodoru w gazach ziemnych związanych ze złożami węglowodorów czy ze złożami rud metali. Przeanalizowano 160 wyników badań składu gazów z otworów wiertniczych zlokalizowanych w rejonie północno-zachodniej Polski. Można zauważyć bardzo zmienne zawartości wodoru w tych próbkach. Jego zdecydowanie wyższe stężenia obserwuje się w utworach czerwonego spągowca, zaś znacznie niższe w utworach karbonu, dewonu i kambru. Obecność wodoru jest związana nie tylko z litostratygrafią, ale także z budową tektoniczną danego obszaru. Przedstawiono kierunki prac badawczo-rozwojowych, które powinny być choć w części prowadzone na etapie wstępnej oceny możliwości występowania pułapek wodorowych i określenia ich potencjału.
Empuñando el poder: Museo del Carmen de Maipú. Chile
Authors: Kast Mónica , Campomassi Yepez Caterina , Guzmán Domeyko Magdalena
Published: July 2024

El Museo del Carmen de Maipú, ubicado junto al Templo Votivo de Maipú y fundado en 1956, contiene una gran diversidad de objetos de la historia de Chile.
Volver a los orígenes. La identidad gráfica de un museo como patrimonio de una comunidad. Museo Interactivo Mirador (Chile)
Authors: Brancoli María Bernardita
Published: July 2024

El patrimonio gráfico corresponde a todas aquellas piezas creadas en cierto periodo, que contienen elementos de la comunicación visual de los cuales se logran percibir o deducir características que sirven para entender el contexto en el que nacieron y que representan para un grupo social.
Increasing Emotional Distress and Use of Health Services among Hospitality Industry Workers During and After the COVID-19 Lockdown
Authors: Kim Pearl C. , Cochran Christopher , Bai Billy , Bhandari Neeraj , Khan Bethany , Keyoung Estella Sky , Shen Jay J.
Published: July 2024

Objective

To examine the emotional distress situation among hospitality industry workers and their access to and use of health care including telehealth services during the COVID-19 pandemic.

Methods

A survey was administered on the Qualtrics platform both in English and Spanish from November 18, 2020, to November 30, 2020, through the Culinary Workers Union in Nevada. A total of 1182 union members participated in the survey, of whom 892 completed the survey. Descriptive and multivariable regression analyses were conducted.

Results

Among 892 respondents, 78% were people of color; 71% were laid off or furloughed during the COVID-related shutdown, but most had access to health care. Further, 78.8% experienced at least 2 or more signs of emotional distress during the pandemic. Females and unemployment status were positively associated with experiencing emotional distress. About 43.5% received care through telehealth, although most did not prefer telehealth (74.2%). Only 18.3% of non-telehealth users were interested in telehealth and 15.0% had never heard about telehealth.

Conclusions

Health insurance coverage is essential for access to health services regardless of employment status. Strengthening mental health services, including psychological counselling for hospitality workers, is needed in such public health emergency situations as the ongoing COVID-19 pandemic.
Experiences of Visually Impaired Mothers in Childcare and Their Expectations from Nurses
Authors: Erbay Ozdede Elif , Cinar Nursan
Published: July 2024

Background and Purpose:Research on the childcare experiences of visually impaired mothers and their expectations from nurses in this context is relatively scarce. This study aims to explore the experiences of visually impaired mothers in caring for their children, as well as their expectations from nurses during this process. The goal is to provide strategic recommendations for nurses based on these expectations.Methods:The study utilized a phenomenological design and employed a qualitative methodology. Data for this study were collected in six different provinces of Turkey between March 2019 and May 2020. The study group consisted of 25 visually impaired mothers with nondisabled children aged 0–18 years.Results:The analysis yielded four themes: “Postpartum Emotions and Care at 0–1 Years,” “Hygienic Care of the Child,” “Experiences in the Child’s Illness,” and “Nursing Support: Expectations of Visually Impaired Mothers.” While the first three themes are associated with childcare, the fourth theme encompasses both the expectations from nurses and recommendations for visually impaired mothers. The study found that visually impaired mothers had unique experiences and either received assistance or developed childcare strategies. However, it was observed that nurses struggled to empathize with visually impaired mothers, and efforts to address their specific needs were limited.Implications for Practice:Pediatric nurses should develop methods to facilitate childcare for visually impaired mothers. Successful outcomes in this field depend on nurses collaborating with visually impaired mothers and providing them with ongoing support.
The Concept of Readability from a Librarian’s Perspective
Authors: Hossain Alif , Banerjee Swapna
Published: July 2024

In our present society, there is a need for information that will help individuals in decision-making and developing personal policies and will help them to transform into better information-literate citizens. An information-literate citizen can help generate new information by combining or analyzing all the information he or she has gained. It would develop new theories, which would lead to the generation of new knowledge. A reader needs to understand the document to process the information that is presented in it. This is where the feature of readability comes into play. In layman’s language, readability can be described as the ability of the written content to make the reader easily understand the information. This paper aims to provide a review of the articles that are related to readability. The review is done by searching for relevant articles on Google Scholar and analyzing them. Also, the paper aims to support readability studies in libraries as they can play a huge role in selecting appropriate books for users.
Два века Летописа Матице српске (1824–2024)
Authors: Ђилас Гордана
Published: July 2024

Летопис Матице српске је најстарији српски живи часопис који ове, 2024. године, обележава 200 година излажења. Основао га је новосадски професор Георгије Магарашевић (1793–1830). Издавање Летописа након треће свеске преузима Матица српска. Рад се бави прегледом основних програмских оријентација Летописа током смене бројних уредника, од којих су најзапаженији Георгије Магарашевић, Теодор Павловић, Јован Суботић, Јован Ђорђевић, Тихомир Остојић, Марко Малетин и Младен Лесковац. Од оснивања и широког програма Георгија Магарашевића, који је предвидео да буде часопис који се тиче целог словенског, а нарочито српског народа, мењао је концепцију, условљен друштвеним, политичким и идеолошким разлозима, све време стремећи да постане српски књижевни научни часопис. Иако је то делимично постигнуто тек у периоду након Другог светског рата, а у потпуности распадом Социјалистичке Федеративне Републике Југославије, његова дуготрајност обавезује на неговање традиције и додатна истраживања његовог утицаја у савременом тренутку.
Прве позајмне библиотеке у Панчеву: поводом 100 година од оснивања Градске књижнице
Authors: Траиловић Горан
Published: July 2024

Градска књижница и музеј, основана у Панчеву 1924, успешно је деловала до Другог светског рата, имала стабилно финансирање, релативно стручан кадар и велики број читалаца. Била је једна од четири градске библиотека у Војводини, односно седам у целој Србији које су деловале између два рата. Аутор је, на основу доступне литературе и докумената, настојао да осветли предисторију Градске библиотеке (ГБП), одговори на питање зашто није могла да буде основана раније, одреди почетне године када су могле бити основане прве позајмне књижнице у Панчеву и њихову везу са ГБП. Дошло се до закључка да су прве читаонице и библиотеке могле бити формиране најраније почетком 19. века, када је Аустрија коначно протерала османску војску са ових простора и када су створени предуслови за континуиран привредни, друштвени и културни развој града. Пажња је посвећена библиотеци Немачко-банатске граничарске регименте, једној од највећих и најорганизованијих књижница које су деловале у годинама пре развојачења Војне границе 1872. Уочи укидања Границе, после више српских касина и читалишта, оснива се библиотека Српске православне црквене општине (СПЦО), која је, такође, имала позајмни карактер и велики значај за панчевачке Србе.
Прилог познавању рада народне књижнице и читаонице у Осечини од 1924. до 1940. године: поводом стогодишњег јубилеја
Authors: Глушац Јелена
Published: July 2024

Данашња Народна библиотека „Осечина“ у истоименој варошици једина је установа културе у тој општини која обавља библиотечко-информациону и издавачку делатност, као и друге културне делатности. Прве активности на пољу библиотекарства потичу из периода између два светска рата. У то време Осечина је била једна од општина Подгорског среза, чије је седиште било у Ваљевској Каменици, а који се од 1933. налазио у Дринској бановини. Рад Народне књижнице и читаонице у Осечини између 1924. и 1940. године биће сагледан на основу сачуване архивске грађе. Упоредном анализом података о раду других народних књижница и читаоница из истог среза у овом временском интервалу биће приказано место и улога Народне књижнице и читаонице у Осечини, као и сличности и разлике међу датим установама културе.
Јубилеји као путоказ: 75 година Библиотеке „Димитрије Туцовић“ у Лазаревцу
Authors: Матијевић Милица
Published: July 2024

Званична историја говори да је Библиотека „Димитрије Туцовић“ у Лазаревцу основана 1949. године. До данас је израсла у савремену установу културе, која је препознатљива како у својој средини, тако и шире. Током свог историјског развоја пролазила је кроз различите етапе. Смењивале су се услуге библиобуса, развоја пунктова и ширења мреже огранака. Од 2011. године установа је смештена у наменски адаптирану зграду у центру града, има четири активна огранка и располаже фондом од преко 150.000 јединица библиотечко-информационе грађе. Манифестација „Фестивал хумора за децу“ одржава се под њеним окриљем већ 35 година. У последњој деценији свог рада све више се окреће потребама заједнице, покреће бројне нове услуге, умрежава се и пројектно финансира.
Зелене библиотеке као чинилац еколошке свести и еколошког деловања
Authors: Стојановић Гордана , Гордић Срђан , Миљановић Снежана
Published: July 2024

Уједињене нације усвојиле су 2015. године „Агенду за одрживи развој 2030“, која обухвата библиотеке као важан фактор у борби за очување животне средине и просперитет човечанства. Зелене библиотеке представљају иновативан концепт који интегрише принципе одрживог развоја и еколошке одговорности у дизајну и у раду. Ове културне установе активно промовишу еколошку свест и образовање корисника кроз радионице и програме који подстичу стицање знања и размену идеја о одрживом развоју. Циљ овог рада је да укаже на то како библиотеке могу и начином своје изградње и технолошком опремом да буду – у неколико светских, инспиративних примера то већ и бивају – пример хармоничног сусрета природе и културе.
JÓKAI MÓR SZÓKINCSÉRŐL ÉS SZÓALKOTÁSI MÓDJAIRÓL AZ ÍRÓI SZÓTÁRAK TÜKRÉBEN
Authors: Lőrincz Gábor , Lőrincz Julianna
Published: July 2024

Bár a lexikológiai és lexikográfiai szakirodalom lassan pótolja a lemaradást az írói szókincs feldolgozása terén, még a számítógépes szótárszerkesztés korában is bőven van adósság irodalmunk nagyjai szóhasználatának vizsgálatát illetően. Ezeknek a hiánypótló műveknek a sorát folytatja a 2020-ban megjelent Jókai szókincsének nagy részét feldolgozó Jókai-enciklopédia is. A dolgozat első része az írói szótárak céljáról, feladatáról szól, majd bemutat néhány írói szótárt, részletesebben a Jókai-szótárt és a Jókai-enciklopédiát.
A tanulmány célja, hogy bemutassa Jókai szókincsének és szóalkotási módjának az iskolai oktatásban való hasznosíthatóságát a Jókai-enciklopédia felhasználásával. A szerzők az író szókincsét, szóalkotásmódját elemzik, a példaanyagot Jókai Mór A kőszívű ember fiai című általános iskolai kötelező olvasmányból merítve.
A KORONAVÍRUS-JÁRVÁNY METAFORÁIRÓL
Authors: SCHIRM Anita
Published: July 2024

A koronavírussal kapcsolatos hírek a mindennapjaink részévé váltak. A nyelvhasználók révén a nyelvünkben is rögtön megjelentek a vírusra vonatkozó metaforák, amelyek magyarázó erejüknél és szemléletességüknél fogva azonnal elterjedtek. A tanulmány a pandémia idején született költői képeknek ered a nyomába, s megmutatja, miért is gyakori a járványokról szóló beszédben a metafora. A COVID19-ről szóló kommunikációban a metaforák szemléltetnek, magyaráznak, érzelmeket váltanak ki, meggyőznek, olykor pedig manipulálnak, azaz a járványról való gondolkodást nagymértékben befolyásolja a híradások szóhasználata. A tanulmány a koronavírushoz kötődő verbális és vizuális metaforák működését egy hírekből, reklámokból és társadalmi célú hirdetésekből épített korpusz elemzésén keresztül, a kognitív metaforaelmélet keretét felhasználva mutatja be.
STRUKTÚRÁK ÉS TÉRKOMPOZÍCIÓK SZABÓ LŐRINC KÖLTÉSZETÉBEN
Authors: BEDNANICS Gábor
Published: July 2024

Szabó Lőrinc költészetét nehéz megkerülnie annak, akinek a modern magyar líra történetével kell számot vetnie. Írásomban a térpoétika szempontjait vezetem be annak érdekében, hogy láthatóvá legyen, a késő modern poétika miben gazdagodhat akkor, ha ezt a perspektívát is játékba hozzuk. Ehhez speciális módon, a tér mint struktúra előtérbe helyezésével férkőzök hozzá, mely számos, a Te meg a világ-kötetben megjelent vers kapcsán képes felmutatni, miért is fontos ennek a távlatnak a beépítése az irodalomtörténeti kérdezésmódba.
EGY KÖZTESSÉG MEGHATÁROZÁSA
Authors: BALÁZS Imre József
Published: July 2024

Markó Béla korai költészete két generációs poétika közöttiként írható le. Első verseskötetét 1974-ben jelentette meg, egy olyan időszakban, amikor a romániai politikai helyzet fontos változásokon ment keresztül. A kései hatvanas évek liberálisabb politikai helyzete után az 1970-es évek romániai politikája fokozatosan újra egy sztálinista típusú kultúrpolitikát eredményezett, amelyet leginkább a nemzeti kommunizmus terminusával szokás leírni. Markó költészete erre a változásra egyfajta dezillúziós modalitással reagál, korai költészete pedig úgy írható le, mint amely egyfajta nosztalgikus, közösségorientált poétika ihletése felől egyre inkább egy avantgárd képiség és reflexív költészetszemlélet felé mozdul el. A tanulmány ezt a változást a korai Markó-kötetek recepciójának összefüggésében vázolja fel.
MUNK ARTÚR A HINTERLAND CÍMŰ REGÉNYÉNEK KONTEXTUALIZÁLÁSA
Authors: BENCE Erika
Published: July 2024

A korabeli recepció – elsősorban Schöpflin Aladár és Kázmér Ernő, részben Szenteleky kritikai értékelése –, illetve az 1981-es második kiadás nyomán létrejött egyes újraolvasások (mindenekelőtt Bori Imre utószava) nagyrészt máig érvényes szempontok alapján helyezte alakulástörténeti kontextusba és állította jelentés-összefüggésbe Munk Artúr regényírói opusát, többek között az 1930-ban napvilágot látott A nagy káder és az 1933-as A hinterland című műveinek értelmezési lehetőségeire is rávilágítva. Épp ezért tekinthetők történeti-poétikai és narratológiai szempontból is megalapozatlannak, indokolatlannak azok a törekvések, amelyek a jelölt Munk-regények értelmezését mind a XX. század második felében, mind jelen korunkban különböző sztereotípiák, ideológiák és tudománytalan törekvések szolgá- latába igyekeztek és igyekeznek állítani. A tanulmány Munk Artúr A hinterland: A mögöttes országrész háborúja című regényének keletkezés- és recepciótörténeti aspektusait vizsgálva mutat rá az említett megközelítések neuralgikus pontjaira, működésképtelenségére, távlati tarthatatlanságára, miközben lehetséges értelmezési modelleket, kontextusokat is felállít egy perspektivikus Munk-portré kialakítása érdekében.
A VERSES REGÉNY MŰFAJNÉV MEGJELENÉSE ÉS A MŰFAJRÓL VALÓ GONDOLKODÁS A MAGYAR IRODALOM TÖRTÉNETÉBEN
Authors: KOCSIS Lenke
Published: July 2024

A műfajok létrejöttének és fejlődésének, egy műfajnév kialakulásának és elterjedésének története általában a nehezen nyomon követhető jelenségek közé tartozik. Lineárisan előrehaladó, könnyen átlátható folyamatokról csak kivételes esetekben beszélhetünk, inkább töréspontokról, amelyek valamilyen szempontból meghatározónak tekinthetők. A verses regény esetében, legalábbis ami a magyar irodalmat illeti, egészen jól áttekinthetőnek tűnnek azok a törés- és fordulópontok, melyek a műfajról napjainkban létező szemléletek kialakulásához vezettek. A tanulmány azokat a történeti állomásokat veszi számba, amelyek valamilyen szempontból fontosak a verses regény mint műfaj és maga a megnevezés elterjedése és elismerése, valamint a róla való gondolkodás alakulásának szempontjából.
Pengembangan Teknologi Supercritical Geothermal: Potensi dan Strategi untuk Energi Bersih dan Berkelanjutan
Authors: Dian Pertiwi Permata , Riska Laksmita Sari  , Fauji Islami Phasya
Published: July 2024

Development of supercritical geothermal technology is a complex and challenging process that requires significant investment in research, technology development, and collaboration. However, the potential benefits of this technology include low carbon footprint, high efficiency, and the potential to provide reliable electricity, making it an important focus area for the future of clean energy production. This study is qualitative and uses literature study methods involving data collection and analysis from various literature sources, including scientific journals, books, and reports. The literature study was conducted by searching and collecting several relevant and accurate sources such as scientific journals, books, and official publications on the topic. Data collection was carried out by analyzing the content of each available source. The supercritical geothermal well drilling method can generate electricity of 3-5 MW per well. Several successful energy development projects include exploration well drilling in Mexico, Italy, Iceland, USA, Kenya, and Japan. Supercritical energy development technology is also continuously being developed, such as closed-loop and CO2 utilization. The development of supercritical geothermal technology is a complex and challenging process that requires significant investment in research, technology development, and collaboration. However, the potential benefits of this technology include low carbon footprint, high efficiency, and the potential to provide reliable electricity, making it an important focus area for the future of clean energy production.
 
Keywords: energy; geothermal; supercritical; technology; development; efficiency
ANALISIS PERBANDINGAN PRODUKSI SEBELUM DAN SETELAH WELLSERVICE PADA SUMUR X LAPANGAN Y PT PERTAMINA EP
Authors: Yehuda Eric Christian  , Laksmita Sari Riska
Published: July 2024

Well X started production on February 9th, 2012 with oil production of 217 BOPD and peak production on March 1th, 2012 with oil production of 2756 BOPD. As production progresses, the reservoir pressure will decrease resulting in a decrease in the production rate. Well X was shut-in on March 7th, 2023 with oil production of 197 BOPD and watercut reaching 91.27%. The location of this study is administratively located in Campurejo Village, Bojonegoro District, Bojonegoro Regency. Analysis of well potential and well forecasting are carried out by the Wiggins method. This method was chosen because the X well has a three-phase fluid and a high water cut. The calculation results show a maximum flow rate of 4111.52 BFPD and an optimum flow rate of 2466.91 BFPD. After calculating the optimum flow rate, and to avoid water cloning, it is recommended that wells be produced with a production flow rate of 2412.54 BFPD at a well base flow pressure (Pwf) of 1368 Psi.
Keyword: well service; IPR; future IPR
Optimasi Jaringan Pipa Sumur ESP Pada Manifold A dan Manifold Satelite untuk Meningkatkan Laju Aliran Minyak dan Analisis Perubahan Tekanan di Lapangan J
Authors: Pedraza Putri Rizkika Ramadhanti , Ayuningtyas Rivanya , Eriska Eklezia Dwi Saputri  , Hadziqul Abror
Published: July 2024

The wells in Field J, using Electrical Submersible Pumps (ESP), have replaced their natural flow operations. To optimize this ESP well and pipeline network, the research focuses on adjusting the ESP pump frequency within the Pipesim simulator, increasing it to enhance oil flow rates. This study employs a quantitative approach, where field data is analyzed and input into a simulation model that replicates real-world conditions. The analysis encompasses changes in flow rates and pressures, comparing the base case to post-optimization simulations. The results indicate a substantial increase in the initial oil flow rate from 578 STB to 720 STB/d, with an increase of 142 STB/d, when the pump frequency is raised to 60 Hz. This frequency adjustment significantly boosts pump discharge pressure, providing the added energy needed to transport fluid to the surface.
Keyword: esp; pipeline network; production optimization; production simulation
Penentuan Nilai Porositas pada Sample Berea di Routine Core Analysis Laboratorium BBPMGB “LEMIGAS”
Authors: Febriyana Marine Chyntya , Welayaturromadhona
Published: July 2024

This study aims to analyze routine cores, especially for determining the porosity of a rock.  The samples tested by the coreval tool were 3 samples of 1.5 inch diameter with a length of 4.5 cm each. The sample used is a sample of Berea sandstone.  When the core sample comes, it is continued with ct-scan and spectral gamma ray. The next process is washing the fluid in the core sample. After cleaning from other fluids, the core sample will be dried in the oven. After it is completely dry, the sample must be stored in a desiccator containing silica gel. After ambient temperature, then the core sample is tested using Coreval 700.  The data inputted into the coreval computer are the name of the core sample, the dry weight of the core, the length of the core, and the diameter of the core. The coreval tool takes readings of bulk volume, pore volume, and porosity. This reading resulted in bulk volume values of 50.091 cc; 53.446 cc; and 52.410 cc, respectively. The pore volume value of each sample is 12.091 cc; 13.787 cc; and 13.385 cc. As for porosity, the value of each sample is 25.767%; 25.795%; and 25.540%.
Keywords: coreval 700; permeability; porosity, RCAL
Integración productiva y comercial de México en las cadenas globales de valor
Authors: Pérez-Santillán Lesbia , Arriaga Navarrete Rosalinda
Published: July 2024

En este trabajo se analizan las características de la integración productiva y comercial de México en 1995-2018. Se ofrece un marco para entender cómo se integran los sectores de la economía mexicana a las cadenas globales de valor (CGV). Se aplica la metodología desarrollada por Wang, Wei, Yu y Zhu (2017a y 2017b) a las matrices de insumo-producto interregionales de la Organización para la Cooperación y el Desarrollo Económicos (ocde), y con ello se responde a dos cuestiones: 1) ¿qué  porcentaje de factores de producción empleados en los sectores de México ha estado involucrado en actividades de producción segmentada o CGV entre países?, y 2) ¿qué porcentaje de productos finales manufacturados por los sectores mexicanos proviene de actividades de CGV? Los resultados indican que en los sectores de la economía mexicana prevalecen índices de participación de vínculos hacia atrás (mayor participación de insumos intermedios importados) en comparación con sus respectivos índices de participación de vínculos hacia adelante (insumos del país en las exportaciones y la producción de terceros países). Además, los resultados indican que cualquier diseño de políticas tendientes al impulso de ciertas actividades debe considerar que, de manera global, prevalece una mayor integración a las CGV de los países y sus sectores, independientemente de su nivel de desarrollo. Este hecho puede limitar las opciones de mayor encadenamiento de las actividades relacionadas a las CGV con las actividades domésticas.
La transmisión de la política monetaria a través del crédito bancario en México
Authors: Chiguil-Rojas Atzin , Esquivel Gerardo , Leal Julio
Published: July 2024

Este artículo analiza empíricamente la existencia del canal de crédito de la política monetaria en Mexico, es decir, la relación entre cambios en la tasa de interés objetivo y las variaciones en el crédito otorgado por bancos comerciales. Combina información agregada con datos de las hojas de balance individuales de los bancos comerciales y realiza un análisis de regresión de datos panel. El análisis se realiza para el crédito total, así como para sus distintos componentes (empresarial, consumo e hipotecario). Además, mediante la información contable de los bancos, se explora si el mecanismo de transmisión ocurre por el lado de la oferta. Se encuentra que existe una relación negativa y económicamente significativa entre la tasa de interés y el crédito, y se establece la existencia de dicha relación para los diferentes tipos de crédito. Asimismo, se halla evidencia que sugiere que el mecanismo de transmisión opera por el lado de la oferta, pues los bancos con hojas de balance más robustas exhiben mayor resiliencia a los cambios en la tasa de interés.
Sul Global em luta antirracista: abrindo caminhos digitais para a erradicação do racismo na educação superior
Authors: Silva Jenipher Alyssa de Lima , Barbosa Ana Patricia Marcos , Böschemeier Ana Gretel Echazú , Melo Rute Régis de , Santos Taízia Tassia dos , Carvalho Breno da Silva , Paixão Ezequiel Adney Lima da , Gomes Peti Mama , Greco Lucrecia Raquel , Broguet Julia
Published: July 2024

A finalidade deste artigo é discutir, de forma integrada, ações escolhidas pela sua significatividade, selecionadas a partir das propostas de ações de dois ciclos da ação voltada para a eliminação do Racismo no Ensino Superior, no âmbito da campanha coordenada pela Cátedra UNESCO Educação Superior, Povos Indígenas e Afrodescendentes na América Latina/UNTREF nos períodos de setembro a dezembro de 2020 (primeiro ciclo) e de outubro a dezembro de 2021 (segundo ciclo). Durante o primeiro ciclo foram abordadas diversas ações inter-institucionais em uma rede que envolveu países como Brasil, Guiné Bissau e Argentina. Todas as ações foram tangenciadas pela discussão antirracista em perspectiva decolonizadora, internacional, intercultural e plurilíngue. Durante o segundo ciclo, o foco esteve na luta antirracista vinculada à comunidade Surda do estado do Rio Grande do Norte, no Brasil. Refletimos sobre a importância de tecermos pontes críticas na construção de reflexões  sobre  o  racismo  que sejam capazes de evidenciar os outros aspectos do pertencimento identitário em perspectiva interseccional - deficiências, gênero, nação, dentre outras.
Professionals’ Satisfaction with the Available Early Support Services, the Professional Role and the Support Provided to Children with Developmental Disabilities and Their Families
Authors: Šarčević Ivić-Hofman Katarina , Wagner Jakab Ana , Kiš-Glavaš Lelia
Published: July 2024

Aim: The objective of this research was to determine the satisfaction of professionals with early support services, professional role and support provided to families of children with developmental disabilities in Brod-Posavina and Istria counties. Subjects and Methods: The sample included 82 professionals from the fields of healthcare, social welfare, and early and preschool education, and a measuring instrument was designed for the purposes of this research. In the first part of the questionnaire, data on sociodemographic characteristics were collected, and in the second part, data on professionals’ satisfaction with early support services, satisfaction with their professional role and satisfaction with the support provided to families of children with disabilities. Results: The results show that most professionals are satisfied with the advisory support services of pediatricians from the health center, the inclusion of children with developmental disabilities in kindergarten and the advisory support of kindergarten teachers. A very small number of professionals express their satisfaction with telephone counseling, the service of a social pedagogue in Centre for Social Welfare, and an assistant in a kindergarten. It was identified that only self-assessment of knowledge about children with developmental disabilities is a significant positive predictor of satisfaction with the professional role (ß = 0.37, p < 0.01). Conclusion: It was also shown that professionals who have more knowledge are more satisfied with their professional role and the support they provide. Findings of this research suggested that quality education and knowledge can be key to achieving a high level of satisfaction with the professional role and the support provided.
Santral Puberte Prekoks Tanılı Kızlarda GNRH Analog Tedavisinin Antropometrik Ölçüm Değerlerine etkisi: Bir Yıllık Takip Sonuçları
Authors: Özalkak Şervan , Keskin Melikşah , Karacan Gülin , Savaş Erdeve Şenay , Çetinkaya Semra
Published: July 2024

GnRH analogları (GNRHa) santral puberte prekoksta(SPP) altın standart tedavi yöntemidir. GnRHa tedavisi ile vücut kitle indeksinde (VKİ) artış olduğunu, değişmediğini ve azalabileceğini bildiren çalışmalar mevcuttur. Bu çalışmada; SPP’li kızlarda GnRHa tedavisinin birinci yılında boy, ağırlık, VKİ değerleri ile bel çevresi, bel çevresi/boy oranındaki değişimin değerlendirmesi amaçlanmıştır. Hastanemizde SPP tanısıyla GnRHa tedavisi başlanan 63 kız olgu dahil edildi. Tedavi öncesi/tedavinin birinci yılında boy, ağırlık, VKİ, bel çevresi ölçümleri yapıldı. Veriler SPSS 25.0 yazılımı kullanılarak analiz edildi. Yaş ortalaması 8,41±0,92 yıl idi. Olguların boy, vücut ağırlığı, VKİ, öngörülen son boy (ÖSB), bel çevreleri ölçüm ortalamaları tedavi öncesine göre birinci yılda istatistiksel olarak çok önemli artış gösterdi (p<0,001). Olguların birinci yıl bel çevresi persentil değerleri tedavi öncesine göre artmış bulundu (p=0,002). VKİ persentili ≥%85 olanların yüzdesi tedavi öncesi ve tedavinin birinci yılında sırasıyla; %50,8 ve %58,7 idi (p=0,180). Tedavi öncesi VKİ <85 persentil(n=31) ve ≥85 persentil(n=32) olarak iki grupta değerlendirildiğinde; tedavinin birinci yılında her iki grubun bel çevresi/boy oranı, bel/kalça çevresi oranı, VKİ sds, boy sds değerlerinde anlamlı değişim görülmedi. GnRHa tedavisiyle boy, vücut ağırlığı, VKİ, ÖSB, bel çevreleri, bel çevresi persentilleri artmıştır. Başlangıçta VKİ<85 persentil ve VKİ ≥85 persentil olgularda, tedavinin birinci yılında VKİ sds, boy sds değerleri ile bel çevresi/boy oranı, bel/kalça çevresi oranları açısından değişiklik gözlenmemiştir. SPP’li kızlarda GnRHa tedavisinin uzun dönem etkilerini daha uzun süreli ve daha büyük gruplarda araştıran ileri çalışmalara ihtiyaç vardır.
Structural Design and Optimization of Low-Frequency High-Power Electromagnetic Transducer
Authors: Guan Yaojun , Gao Yang
Published: July 2024

Crucial equipment for marine engineering and research, high-power ultra-low frequency sound sources have become necessary with the rapid development of seabed resource exploration, marine environment monitoring, underwater remote target detection, and communication technology. The current ultra-low frequency sound source cannot meet the requirements of practical applications. In this paper, both the finite element method and equivalent circuit method are used to improve the electromagnetic acoustic transducer, focusing on solving the structural design of the functional parts of the transducer, as well as the mechanical, electrical, magnetic parametrization of the transducer and other key technologies. The structural parameters and material parameters in the transducer that affect the final performance response are obtained through the optimization of the genetic algorithm. The results show that the electromagnetic acoustic transducer studied in this paper can emit low-frequency sound waves below 50~Hz, and the maximum sound pressure level reaches 138~dB, which meets the requirements of general low-frequency high-power acoustic wave transducers in practical work.
Optimization Design Method for Vibration Reduction of Frame Structure of Cable-Driven Parallel Robot
Authors: Song Da , Sun Zhichao , Zhao Lei , Lu Ming , Wang Haochen , Zhang Lixun
Published: July 2024

This paper proposes a comprehensive optimization algorithm for the crossbeam cross-section size to solve the vibration problem of the flexible cable-driven parallel robot frame. The goal is to achieve an innovative design of the cross-sectional structure. By using a differential evolution algorithm, a comprehensive scale analysis of the cross-section size of the beam is carried out. This optimization method effectively improves the cross-section moment of inertia and the bending stiffness of the beam. Additionally, based on the variable density penalty method, the topological optimization design of the cross-section is carried out under the condition of minimum flexibility, the optimization objective function is established, and the objective function is solved by the moving asymptote method. The optimization results show that the beam stiffness is maximized while meeting the minimum flexibility required by the project. Through comparative analysis with various aluminum profile structures and their constructed frames, it is verified that the cross-sectional shape obtained through the optimized design method can significantly improve the anti-vibration stability of the frame.
Generalized weighted group inverse in Banach algebras with proper involution
Authors: Chen Huanyin
Published: July 2024

In this paper, we introduce the notion of the generalized $w$-group inverse in a Banach algebra with proper involution. This is a natural generalization of generalized (weak) group inverse in Banach *-algebras. Many elementary properties of such new weighted generalized inverse are presented. We further establish the equivalent relations between generalized weighted group inverse and weighted generalized Drazin inverse. Related properties of generalized (weak) group inverse are extended to the wider cases.
Schemes for Resource-Efficient Generation of Twiddle Factors for Fixed-Radix FFT Algorithms
Authors: Jones Keith
Published: July 2024

The paper describes schemes for the resource-efficient generation of twiddle factors for the fixed-radix version of the ubiquitous fast Fourier transform (FFT) algorithm. The schemes, which are targeted at a parallel implementation of the FFT, provide one with the facility for trading off arithmetic complexity, as expressed in terms of the required numbers of multiplications and additions (or subtractions), against the memory requirement, as expressed in terms of the amount of random access memory (RAM) required for constructing the look-up tables (LUTs) needed for the storage of the two twiddle factor components – one component being derived from the sine function and the other from the cosine function. Examples are provided which illustrate the advantages and disadvantages of each scheme – which are very much dependent upon the length of the FFT to be computed – for both the single-level and multi-level LUTs, highlighting those situations where their adoption might be most appropriate. More specifically, it is seen that the adoption of a multi‑level LUT scheme may be used to facilitate significant reductions in memory – namely, from an O(N) to an memory requirement, for the case of an N‑point FFT, where β ≥ 2 corresponds to the number of distinct angular resolutions used – at a relatively small cost in terms of increased FFT latency and arithmetic complexity.
LINC01354 Associates with Low-Grade Glioma Survival
Authors: Xu Jingxuan
Published: July 2024

Background Gliomas are the most prevalent primary malignant brain tumors worldwide. Recent studies highlight the potential of long non-coding RNAs (lncRNAs) in tumor progression, with LINC01354 being upregulated in various malignancies. This study investigates the role of LINC01354 in glioma prognosis to provide novel insights for early prognosis prediction.Methods This study involved four cohorts of low-grade glioma tissue samples collected from hospitals in Xinjiang, Beijing, and Guangzhou, China. Quantitative Real-Time Polymerase Chain Reaction (qRT-PCR) was used to measure LINC01354 expression levels. Clinical information and survival data were analyzed using Cox regression and ROC analysis to evaluate the association between LINC01354 expression and overall survival. Clinical comparisons were conducted to identify potential discrepancies in clinical parameters across different cohorts.Results Elevated LINC01354 levels were associated with poorer overall survival in the West China cohort (Xinjiang) but not in the North (Beijing) or South China (Guangzhou) cohorts. Clinical parameter comparisons revealed no significant differences among the cohorts that could explain the regional discrepancy. Further analysis within the West China cohort indicated that LINC01354's prognostic value was consistent across Han and non-Han ethnic groups and unaffected by dietary staples. However, LINC01354's prognostic significance was more pronounced in patients born in Xinjiang compared to those born elsewhere. A prognostic model incorporating LINC01354 expression and birth location demonstrated good predictive accuracy with ROC AUC values of 0.777 in the training cohort and 0.757 in the validation cohort.Conclusion LINC01354 is a potential prognostic biomarker for low-grade glioma in the West China population, particularly among patients born in Xinjiang.
Renin-Angiotensin Aldosterone System Modulation and Cardiovascular-Kidney-Metabolic Health
Authors: Mochel Jonathan
Published: July 2024

Similar to humans, the renin-angiotensin-aldosterone system (RAAS) plays a key role in regulating blood pressure and body fluid homeostasis in dogs and cats. The classical RAAS pathway, which involves the conversion of angiotensin I to angiotensin II by the angiotensin converting enzyme (ACE), leads to aldosterone production and associated maladaptive effects in cardiovascular and renal diseases. Recent studies have highlighted the alternative RAAS pathway, which counteracts these effects through angiotensin 1-7, promoting vasodilation and reducing inflammation. Beyond RAAS modulation, RAAS inhibitors have been shown to exert significant anti-inflammatory properties. This is particularly relevant given the American Heart Association's recent focus on Cardiovascular-Kidney-Metabolic (CKM) health, which emphasizes the interconnected risks of cardiovascular disease, chronic kidney disease (CKD), type 2 diabetes, and obesity. These conditions share common pathophysiological pathways, including chronic inflammation, oxidative stress, and metabolic dysregulation. Advances in biomedical research, including the development of adult stem cell-derived canine organoids, provide impetus to study the effects of RAAS modulators and new CVD drugs on CKM health, with a focus on epithelial inflammation within the context of One Health.