bluuebunny/crossref_metadata_2025 huggingface dataset:
UPRAVLJANJE PROJEKTOM PUTNE INFRASTRUKTURE SA POSEBNIM OSVRTOM NA OKOLINSKI INŽENJERING
Authors: Hadžić Rašid , Pozder Mirza , Ljevo Žanesa
Published: April 2023

Putna infrastruktura predstavlja okosnicu razvoja i funkcionisanja svih mogućih ljudskih, privrednih i trećih tokova. Zato, kroz ovaj rad, žele se istaknuti neke vrijednosti koje su bitne za planiranje, projektovanje i građenje puteva, a tiču se upravljanja datog projekta. Posebno, pa čak i intenzivno, vrši se vrednovanje okolinskog inžinjeringa za eventualnu naučnu i stručnu problematiku. Tim povodom date su neke aplikacije na mega projektu u Bosni i Hercegovini, Koridoru Vc.
IZRAČUNAVANJE OPTIMALNIH TEHNIČKIH PARAMETARA METODE KRATKIH MEHANIZOVANIH OTKOPA U PODZEMNIM RUDNICIMA UGLJA
Authors: Ivković Mirko
Published: April 2023

Osnovni pravac razvoja sistema otkopavanja ležišta uglja podzemnim sistemom usmeren je ka uvođenju i unapređenju metoda širokih čela sa kompleksnom mehanizacijom. Međutim, u pojedinim ležištima prirodno-geološki uslovi eksploatacije ne omogućavaju primenu ove metode, te se iznalaze druga specifična rešenja otkopavanja. Jedna od fleksibilnih i prilagodivih složenim uslovima eksploatacije je i metoda kratkih mehanizovanih otkopa. Na osnovu svestrane analize u ovom radu je matematičkim modeliranjem izvršeno određivanje optimalnih tehničkih parametara ove metode otkopavanja ugljenih slojeva.
TERMOENERGETSKA POSTROJENJA I ODRŽIVI RAZVOJ
Authors: Milovanović Zdravko , Dumonjić-Milovanović Svetlana
Published: April 2023

Rast svijesti o značenju energije i njenom racionalnom korištenju, kao i padajuća dinamika svjetskih trendova zaliha fosilnih goriva, zahtijevaju i nove analize i primjenu novih tehnologija u proizvodnji električne i toplotne energije. Pri tome, održivost nam pomaže u opisivanju kvaliteta života, a održivi razvoj pruža dodatnu šansu u korišćenju resursa budućim naraštajima. Ideja održivog razvoja zahtijeva i nova pravila i procedure u procesu planiranja elektroenergetskog sistema, pri čemu se sa aspekta održivog razvoja moraju u proces donošenja odluka uključiti određene ekonomske, društvene, zdravstvene i ekološke uslove, što zahtijeva potrebu za analizom svih implikacije dugoročnih razvojnih strategija elektroenergetskog sistema, pri čemu je potrebno u proces izrade strategija, osim donosioca odluka u elektroprivredi i vladi, uključiti (kroz odgovarajući iterativni proces) i drugi učesnike (kao što su javnost, nevladin sektor, korisnike odnosno potrošače, financijske institucije tj. bankarski sektor i dr.). Kako u procjenama uticaja iz različitih energetskih tehnoloških lanaca postoji dosta visok nivo nesigurnosti, neophodno je u okviru realizacije održive strategije u okviru elektroenergetskog sektora poseban aspekt dati analizi osjetljivosti dobijenih rješenja, procjeni rizika u njihovoj primjeni, kao i definisanju neophodnih mjera pouzdanosti i sigurnosti za njihovu realizaciju, pri čemu se kao imperativ nameće formiranje polaznih baza podataka zasnovanih na najboljim informacijama i saznanjima, koja pred planerima (nosiocima izrade stretegija) trenutno stoje su na raspolaganju.
UTVRĐIVANJE POGODNOSTI LOKACIJE ODLAGALIŠTA ZA IZGRADNJU TERMOELEKTRANE BANOVIĆI KROZ DEFINISANJE STEPENA KONSOLIDACIJE I FIZIČKOMEHANIČKIH KARAKTERISTIKA ODLOŽENOG MATERIJALA
Authors: Šabović Almir , Okanović Hasan , Muminović Ramiz , Isabegović Jasmin
Published: April 2023

U radu su prikazani rezultati izvedenih istraživanja i ispitivanja na lokaciji predviđenoj za izgradnju Termoelektrane u Banovićima. Odabrana lokacija za izgradnju TE Banovići predstavlja staro odlagalište na kojem je u posljednjih 30 godina vršeno odlaganje jalovine sa okolnih površinskih kopova Rudnika mrkog uglja Banovići. Zadatak je bio utvrditi debljinu odloženog materijala, stepen konsolidacije i njegove fizičko-mehaničke karakteristike. Pored navedenog predložen je i način temeljenja svih objekata, te urađen proračun nosivosti i slijeganja tla. Takođe su date i inženjerskogeološke i hidrogeološke karakteristike navedene lokacije. Odloženi materijal čine gline, lapori, laporci i ugljevite gline.
ANALIZA UTJECAJA PRIMARNIH NAPREZANJA NA RJEŠENJE INŽENJERSKE ZADAĆE U STIJENSKOJ MASI
Authors: Talić Zlatan , Miščević Predrag
Published: April 2023

Dok je kod ostalih građevinskih objekata opterećenje poznato, kod objekata izgrađenih na ili u stijenskoj masi, u većini slučajeva, opterećenje nije poznato jer ono ovisi o nizu čimbenika koji potječu od ponašanja sredine u kojoj se nalazi objekt, zatim o međusobnom međudjelovanju te sredine i obloge, kao i o tehnologiji izvođenja radova. Poznavanje „in situ“ naprezanja nužno je za projektiranje i izradu podzemnih objekata, posebno kod odabira pogodnih lokacija i orijentacije tunela i drugih podzemnih otvora, optimalnih oblika i veličina podzemnih otvora i odabira pogodnog sustava podgrade, učinkovitih i sigurnih izrada kampada kod zasjeka i prirodnih kosina, kao i temeljenja građevinskih objekata. Problematika primarnih naprezanja naročito je složena ako su u pitanju anizotropne, heterogene i diskontinuirane sredine, te u tim slučajevima ove probleme možemo rješavati putem eksperimentalnih ispitivanja i istraživanja «in situ», ili analizom na numeričkim modelima. Postojanje pukotinskih sustava, te njihova orijentacija, znatno utječu na raspodjelu i intenzitet naprezanja.
ANALYSIS OF SNAP BEHAVIOUR OF SHALLOW CYLINDRICAL SHELLS USING THE FINITE STRIP METHOD
Authors: Borković Aleksandar
Published: April 2023

This paper presents one approach for the analysis of snap behaviour of simply supported elastic shallow shells. Structure is discretized with the finite strip method. Displacement field is approximated with series of products of polynomials and harmonic functions. Only geometric nonlinearity of von Karman type is considered. Equilibrium equations are derived via principle of stationary value of total potential energy and solved with arc-length method. Total Lagrangian approach is used. Detailed analysis of one shallow shell is performed. Obtained results are in good correspondence with the ones from the finite element method.
LABORATORY TESTING OF SAMPLES AT THE LOCATION OF THE THERMAL POWER PLANT - UGLJEVIK 3
Authors: Đurić Neđo , Đuran Perica , Miljanović Jovo
Published: April 2023

Field research for the purpose of the construction of the Thermal Power Plant Ugljevik 3 wasconducted in two phases. In the first phase for the smaller scope of the fieldworks, more laboratory analyses were performed. In the second phase, fieldworks were conducted in a larger scaleand laboratory analyses were considerably smaller.Designers dictated different volume of laboratory tests. In the first phase local legislation was respected while in the second phase Chinese planners considered that there was no need for larger volume of laboratory tests thereby giving more importance to the field study of drilling cores, SPT experiments and chemical analyses of the soil.
OPTIMAL STRUCTURAL DESIGN OF REINFORCED CONCRETE STRUCTURES – REVIEW OF EXISTING SOLUTIONS CONSIDERING APPLICABILITY ASPECT
Authors: Milajić Aleksandar , Pejičić Goran , Beljaković Dejan
Published: April 2023

During the past two decades, rapid advances in information technology have improved the accuracy and capabilities of optimization techniques. Unfortunately, great number of optimization methods in civil engineering has not found implementation in practice, mainly because the problems were treated only from mathematical point of view, disregarding applicability of obtained solutions in reality. Since the aim of any optimization method is developing methodology that would successfully imitate human reasoning, it is necessary to develop adequate approach that would obtain realistic and applicable solutions. This paper provides basic facts of the optimal reinforced structures design, problem classification, mathematic definition and applicability aspect, as well as preview of methods and references available in the literature.
EXPOSURE TO PARTICULATE MATTER AND HEAVY METALS IN THE POPULATIONS OF CENTRAL ZONES OF BELGRADE
Authors: Tošović Slobodan , Mladenović Janković Svetlana , Cvetković Anka
Published: April 2023

Particulate matter (PM) is hazardous to human health. This paper deals with PM concentrations in ambient and indoor air on three locations (two being in the central parts of the city and another onenear industrial zone of the settlement of Lazarevac, lying in the outskirts of Belgrade). The aim of the paper is to assess the scope of exposure to particulate matter and heavy metals (Pb, NI, Cr, Cd and As) adhered to them. Concentrations of PM in indoor air in the central zones of the city are lower than these measured in ambient air. We concluded that the air is predominant source of heavy metals and metalloids in the environment. Since people spend more than 80% of the time indoors, the control and elimination of local sources of pollution may significantly reduce the scope of exposure to individual pollutants.
ON THE ABRASIVE WEAR HIGH STRENGTH COATING LAYERS ON MACHINE PARTS TESTING
Authors: Kovač Pavel , Savković Borislav , Jesić Dušan , Mankova Ildico
Published: April 2023

Plasma coating technology was applied to machine parts. During application, the jet formed hits the surface of the material and particles are deposited on the surface. In this way, layers of high thickness can be applied and thus revitalize worn machine parts. The paper examines the abrasion resistance of Al2O3 and Al2O3 phosphate layers applied to the base material using plasma technology. The abrasion resistance of the applied layers was tested using the ASTM G 65-85 method. The results of the tests on the loss of the material due to abrasion wear for the two types of coatings in each of the three tested samples are presented. The results of the loss of the material volume at different speeds of the test device wheel are also presented. The phosphate impregnated layer on Al2O3 samples showed significantly higher abrasion wear resistance.
NEKOLIKO PRIMJERA ISTRAŽIVANJA I SANACIJE KARAKTERISTIČNIH KLIZIŠTA U REPUBLICI SRPSKOJ
Authors: Đurić Neđo
Published: April 2023

Složenost geološke građe terena, često nepovoljni klimatski faktori, kao i tehnički zahvati, stvaraju uslove za aktiviranje zemljanih masa na površini terena, koje se uglavnom manifestuju u vidu klizišta. Na teritoriji Republike Srpske, odnosno cijele Bosne i Hercegovine, kao i zemalja u okruženju, prisutna su česta klizišta. Njihov značaj je različit u zavisnosti od ugroženosti objekata, odnosno terena na kome se nalaze. Posljednjih godina evidentiran je veći broj klizišta, uglavnom duž trase saobraćajnica (puteva i pruga), duž riječnih tokova bilo da oštećuju obalu ili nasipe, zatim na padinama gdje se nalaze objekti, najčešće stambeno-poslovni. Klizišta nastala u područjima gdje izostaje interesovanje čovjeka ze teren, uglavnom nisu istraživana. U radu će se dati nekoliko primjera klizišta koja su istraživana i sanirana, kao i istraživanje i saniranje nestabilnih padina u fazi prije gradnje objekata, kako bi se teren stabilizovao pa tek onda gradili objekti.
CONCEPTUAL MODEL FOR SCHEDULING AND CONTROL OF PRODUCTION AND LOGISTICS OPERATIONS USING MULTI-AGENT ROBOTIC SYSTEMS AND BLOCKCHAIN
Authors: Velastegui Hernández Rommel , POLER ESCOTO RAUL , DIAZ MADROÑERO MANUEL
Published: April 2023

The work proposes a conceptual model called MASBLOCK for scheduling and control of production and logistics operations, the study incorporates multi-agent robotic systems and blockchain technologies applied to industry. The problem identified in the research is the lack of coordination between fixed and mobile robots to develop activities and fulfill tasks in work areas, coupled with the lack or non-existence of secure data management. For this purpose, 22 scientific articles related to the subject have been considered considering three criteria (L), (Q) and (L-Q). A methodology proposed in a traditional model has been analyzed, which has served as a basis to define 5 steps for the creation of the new model, multi-agent system technologies have been incorporated for the coordination of robots and blockchain to perform secure data recording, decentralization and verifiable pose. Thus, the MASBLOCK model has been proposed, which shows an industrial environment where inputs, technologies, fixed and mobile robots interact; which perform multiple tasks, until reaching a validation point that allows to continue with the flow of activities until ending with an output, benefiting the interaction, self-programming and self-regulation of robots and all agents involved in productive and logistic operations, and data security in information management.
Keywords: Conceptual model, multi-agent robotic systems, blockchain, industry.
ANALYSIS ON ENERGY ABSORPTION CAPACITY OF MIXED LIGHT WEIGHT CONCRETE (MLWC) UNDER ELECTROMAGNETIC DRIVING SPLIT HOPKINSON PRESSURE BAR (SHPB) CONDITION
Authors: WANG SHUREN , Zhao Jianqing , GONG JIAN , Xu Jingmao , LI CHUNLIU
Published: April 2023

To investigate the energy absorption capacity of the mixed lightweight aggregate concrete (MLWC), a new device of electromagnetic driving split Hopkinson pressure bar (SHPB) was self-developed, and the numerical model of electromagnetic driving SHPB and the mesoscale model of MLWC were established. Some simulations of electromagnetic driving SHPB impact for MLWC with different gravel replacement rates under different initial voltages were carried out, which were verified by the indoor experiments. Results show that the peak velocity of the bullet is exponentially related to the initial voltage, and the peak velocity has a power function relationship with the power-off time when the bullet reaches the peak velocity. With the increase of gravel replacement rate, the peak value of specific energy absorption for MLWC and the dynamic compressive strength increase gradually, while the absorbed energy density decreases. When the gravel replacement rate is 25-35%, the strength of MLWC is effectively improved on the premise of ensuring its energy absorption capacity. The obtained conclusions can provide a reference for the application of MLWC.

Keywords: Electromagnetic drive, Mixed aggregate concrete, Simulation modelling, Split Hopkinson pressure bar (SHPB), Energy absorption
Synthesis and Studies of Dendronized Nonlinear Optical Azochromophores
Authors:   , Laipniece Lauma
Published: April 2023

The Thesis demonstrates the synthesis of new azochromophore derivatives using dendrons with bulky aromatic and/or perfluoroaromatic fragments for application in organic nonlinear optical materials. The mutual interaction of fragments and their influence on the thermal, optical and nonlinear optical properties of azochromophores was investigated. It has been observed that the fragments and functional groups included in the azochromophore molecule are able to provide suitable thermal properties. Polyazochromophoric derivatives have the highest nonlinear optical coefficients and the highest thermal stability.
Infección por Aspergillus flavus y Rhizopus oryzae complex en paciente con diabetes mellitus
Authors: Pérez María Alejandra , Martínez Luisa , Bravo Juan , Rodríguez Brenda , Quintero Paola , Moncada Pablo
Published: April 2023

La sinusitis micótica es una condición patológica que puede presentarse en pacientes con diabetes mellitus y estar asociada a una crisis hiperglucémica. Es una entidad agresiva con complicaciones locales que incluyen afectación de la órbita y el sistema nervioso central, y compromiso vascular. A pesar del tratamiento quirúrgico y antimicótico, la mortalidad es de hasta el 75 %.Se describe el caso de una paciente con diagnóstico de cetoacidosis diabética y signos de oftalmoplejía unilateral que llevaron al estudio con resonancia magnética del sistema nervioso central; se encontraron signos de sinusitis, meningitis y cerebritis. Los estudios microbiológicos iniciales fueron negativos, y los biomarcadores galactomanano sérico y el antígeno de Cryptococcus también fueron negativos. Tras el manejo quirúrgico, se llegó a la identificación de Aspergillus flavus y Rhizopus spp. en el tejido de los senos paranasales. La paciente recibió tratamiento con posaconazol y, tras dos meses de seguimiento, había presentado mejoría clínica. La infección fúngica dual y la infección por A. flavus son entidades poco frecuentes y de relevancia clínica, sin casos presentados previamente en nuestro país por lo que este corresponde a un caso de interés clínico.
Nocardiosis pulmonar y del sistema nervioso central: el alcoholismo como factor de inmunocompromiso
Authors: Márquez Adriana Isabel , Mora Eduardo , Bernal Andrés Felipe , Salazar Andrés Felipe , Mora Diana Patricia , Vargas Ledmar Jovanny
Published: April 2023

La nocardiosis es una enfermedad de distribución mundial; de forma habitual se encuentra en zonas tropicales y afecta principalmente a pacientes inmunocomprometidos, sin embargo, también existen casos reportados de infección en personas inmunocompetentes. Esta infección es causada por actinomicetos del género Nocardia spp. que son bacterias Gram positivas, saprófitos ambientales. Aunque la exposición a Nocardia spp. es casi universal, solo una pequeña fracción de las personas expuestas desarrollan la enfermedad.Se presenta el caso de un hombre de 47 años, sin dato de inmunosupresión, procedente de un área rural de Boyacá, que consultó por un cuadro clínico de cefalea intensa e intermitente, con parestesias y, finalmente, alteración del estado de conciencia. Se practicó una resonancia magnética cerebral, en la que se evidenció una lesión que ocupaba espacio de localización córtico-subcortical en la región fronto-témporo-parietal izquierda, con efecto compresivo y desplazamiento de las cavidades del sistema ventricular. Se sospechó, inicialmente, una lesión neoplásica o un absceso cerebral. El paciente fue sometido a una resección quirúrgica, y el cultivo de la lesión documentó Nocardia africana/nova; en estudios posteriores, se evidenció un posible foco pulmonar primario. Como único factor de riesgo en el paciente, se documentó alcoholismo. Completó seis semanas de tratamiento antibiótico intrahospitalario con evolución clínica y radiológica, y egresó con plan de un año de terapia antibiótica ambulatoria. Aunque la enfermedad por Nocardia spp. afecta principalmente a pacientes inmunocomprometidos, la “evidencia” clínica demuestra que este microorganismo también puede ser una amenaza para individuos sin los factores de riesgo tradicionales para inmunosupresión.
La concentración de óxido nítrico en suero de pacientes con periodontitis agresiva y crónica generalizada no está relacionada con la gravedad de la enfermedad.
Authors: Fuentes-Lerma Martha Graciela , Zamora-Pérez Ana Lourdes , Robles-Gómez Cecilia , Guerrero-Velázquez Celia , Peregrina-Sandoval Jorge , Gutiérrez-Angulo Melva , Mariaud-Schmidt Rocío Patricia
Published: April 2023

Introducción. La periodontitis es una enfermedad inflamatoria que afecta los tejidos de soporte dental; los efectos del exceso de óxido nítrico pueden contribuir a los síntomas de la periodontitis.Objetivo. Determinar la concentración de óxido nítrico en el suero de los pacientes con periodontitis agresiva y crónica generalizada, y compararla con la de individuos sanos de población mexicana.Materiales y métodos. Se trata de un estudio de casos y controles. Se incluyeron 69 individuos de la Clínica de Posgrado de Periodoncia del Centro Universitario de Ciencias de la Salud de la Universidad de Guadalajara. Se dividieron en tres grupos: pacientes con periodontitis crónica generalizada (GCP, n=19), pacientes con periodontitis agresiva generalizada (GAP, n=11) e individuos sanos periodontalmente (HS, n=39). Se obtuvo el consentimiento informado de todos los participantes. Se utililizó la prueba ELISA para medir la concentración de óxido nítrico en suero.Resultados. Las concentraciones de óxido nítrico observadas fueron mayores en el grupo GCP (462,57 ± 16,57 μmol/L) que en los grupos GAP (433,84 ± 18,61 μmol/L) y HS(422,46 ± 12,07 μmol/L). La comparación entre HS y GCP mediante la prueba estadística t de Student (una cola), mostró diferencias significativas (p<0,04), y no se observaron diferencias entre los grupos HS y GAP (p=0,64), ni entre GAP y GCP (p=0,33). Conclusiones. La concentración de óxido nítrico en suero, observada en el presente estudio, sugiere que el óxido nítrico desempeña un importante papel en el procesoinflamatorio, lo que no necesariamente está ligado a la gravedad de la enfermedad ni a la destrucción del tejido periodontal.
Shaping ability of WaveOne Gold and OneReci by using two apical sizes: a micro-computed tomographic assessment
Authors: Çiftçioğlu Elif , Keleş Ali , Akbal Dinçer Gözde , Ateş Melis Oya , Küçükay Enver Sedat
Published: April 2023

Backround

OneReci (MicroMega, Besançon, France) is a recently introduced single-file reciprocating system with scarce information revealed on its shaping ability. This study aimed to compare the shaping abilities of OneReci and a well-documented single-file reciprocating system WaveOne Gold (WOG; Dentsply Maillefer, Ballaigues, Switzerland) and evaluate the effect of increased apical enlargement on the preparation quality, using micro-computed tomography (micro-CT).

Methods

After an initial micro-CT scanning, twenty mesial root canals of mandibular molars were anatomically matched. The canals were assigned to two experimental groups (n = 10), using OneReci or WOG in different canals of the same root. The glide paths were created, and root canals were prepared twice, using size 25 and 35 instruments of the systems, respectively. The specimens were scanned with micro-CT after each preparation. The increase in canal volume, amount of dentin removal, unprepared root canal surface, canal transportation, centering ratio and preparation times were assessed. The data were analysed with independent sample t-tests, variance analyses, Friedman and Mann-Whitney U tests. The significance level was set at 5%.

Results

Each preparation increased the canal volume and dentin removal while decreasing the unprepared root surface. The difference between the systems became significant after preparation with size 35 instruments (p < 0.05). Regarding canal transportation and centering ratio, the difference was insignificant (p > 0.05). The first preparation step (glide path + size 25 instrument) was significantly faster in the OneReci group (p < 0.05).

Conclusions

Preparation with size 25 instruments of the systems appeared to be safe with similar shaping performances. Larger apical preparation promoted significantly higher dentin removal, volume increase, and prepared surface area in WOG.
Reference evapotranspiration estimate with missing climatic data and multiple linear regression models
Authors: Koç Deniz Levent , Erkan Can Müge
Published: April 2023

The reference evapotranspiration (ETo) is considered one of the primary variables for water resource management, irrigation practices, agricultural and hydro-meteorological studies, and modeling different hydrological processes. Therefore, an accurate prediction of ETo is essential. A large number of empirical methods have been developed by numerous scientists and specialists worldwide to estimate ETo from different climatic variables. The FAO56 Penman-Monteith (PM) is the most accepted and accurate model to estimate ETo in various environments and climatic conditions. However, the FAO56-PM method requires radiation, air temperature, air humidity, and wind speed data. In this study in Adana Plain, which has a Mediterranean climate for the summer growing season, using 22-year daily climatic data, the performance of the FAO56-PM method was evaluated with different combinations of climatic variables when climatic data were missing. Additionally, the performances of Hargreaves-Samani (HS) and HS (A&G) equations were assessed, and multiple linear regression models (MLR) were developed using different combinations of climatic variables. The FAO56-PM method could accurately estimate daily ETo when wind speed (U) and relative humidity (RH) data were unavailable, using the procedures suggested by FAO56 Paper (RMSEs were smaller than 0.4 mm d−1, and percent relative errors (REs) were smaller than 9%). Hargreaves-Samani (A&G) and HS equations could not estimate daily ETo accurately according to the statistical indices (RMSEs = 0.772-0.957 mm d−1; REs (%) = 18.2–22.6; R2 = 0.604–0.686, respectively). On the other hand, MLR models’ performance varied according to a combination of different climatic variables. According to t-stat and p values of independent variables for MLR models, solar radiation (Rs) and sunshine hours (n) variables had more effect on estimating ETo than other variables. Therefore, the models that used Rs and n data estimated daily ETo more accurately than the others. RMSE values of the models that used Rs were between 0.288 to 0.529 mm d−1; RE(%) values were between 6.2%–11.5% in the validation process. RMSE values of the models that used n were between 0.457 to 0.750 mm d−1; RE(%) values were between 9.9%–16.3% in the validation process. The models based only on air temperature had the worst performance (RMSE = 1.117 mm d−1; RE(%) = 24.2; R2 = 0.423).
Indústria 4.0: componentes e princípios de design
Authors: Alves Letícia dos Santo , Pinheiro Leonardo Corrêa , Da Silva Josivaldo Godoy
Published: April 2023

Nesse trabalho realizou-se um estudo a respeito da Indústria 4.0 cuja definição remete a uma nova era das fábricas denominada a Quarta Revolução Industrial. Um conhecimento necessário para o cenário mundial atual  corresponde a uma onda de mudanças tecnológicas que as indústrias começam a experimentar. Embora existam pesquisas e discussões sobre o assunto, permanece ainda certa dificuldade acerca do entendimento e abrangência do assunto entre os pesquisadores. Vivenciada a grandes passos pela Alemanha, nem mesmo as suas empresas que já atuam com smart factoy conseguem ter uma definição clara e precisa dessa nova fase industrial. São estas questões em aberto que motivaram o desenvolvimento desta pesquisa com objetivo de esclarecer algumas dúvidas especificamente sobre os princípios e designs da Indústria 4.0. A pesquisa é classificada no que se refere à metodologia, como qualitativa, quanto aos fins é aplicada e quanto aos meios é bibliográfica. Para adentrar no objetivo da pesquisa foi necessário  realizar um estudo de várias fontes bibliográficas,  que permitiu identificar grandes vantagens que estão em curso e se referem ao aumento eficiência, capacidade de gerar informações em tempo real sobre toda a operação industrial, capacidade de “ver” e interagir máquinas entre si e máquinas e funcionários a fim de restringir retrabalho e consumo de energia. No entanto, também se encontrou diversos desafios a serem vencidos, tais como a necessidade de existir novas qualificações profissionais a serem oferecidas pelas instituições de ensino e novas formas destes profissionais interagir com todo o processo produtivo. Portanto, a Indústria 4.0 possui potencial significativo para aumentar a competitividade das empresas ao mesmo tempo que a interação entre funcionários e máquinas dos setores da empresa demandam novas atitudes.
Análise dos fatores determinantes da transparência na gestão pública dos estados brasileiros: uma abordagem à luz da teoria da agência
Authors: Leite Kalina Kely Miranda , De Lira Aluska Ramos
Published: April 2023

A presente pesquisa buscou identificar como determinantes econômicos, sociais e políticos influenciam a transparência na gestão pública dos estados brasileiros. A amostra do estudo foi composta pelas 27 unidades federativas, entre os anos de 2015 e 2016. Para tanto, foi utilizado o modelo de regressão linear múltipla, por meio do método dos Mínimos Quadrados Ordinários (MQO), com uso de dados em painel desbalanceado. Os resultados indicaram que dentre os fatores determinantes explicativos da transparência na gestão pública dos estados brasileiros estão a dimensão populacional, a escolaridade, o analfabetismo, a participação eleitoral, a autonomia financeira, e o endividamento, indicando que a transparência dos estados é influenciada por fatores sociodemográficos, políticos e econômico-financeiros, ou seja, ainda que parcialmente, os estados com melhores condições fiscais parecem ter melhores condições para estruturar a informação com maior qualidade para os seus cidadãos.
Metodologias de gestão de riscos em entes públicos brasileiros: uma análise bibliográfica
Authors: Giestosa Juliana Cottard , Silva Nathália Ingrid Carvalho , Neves Caio Mattos Baeta , Santos Mariana Madeira da Costa , Ferreira Maikon Martins , Antunes Rodolfo Honorato Klostermann , Ceolin Alessandra Carla
Published: April 2023

Gerenciar riscos dentro das organizações públicas pode gerar muitos benefícios como o amadurecimento da governança, a efetividade das políticas públicas, a melhor distribuição de recursos, o aumento da segurança nos processos organizacionais, dentre outros. O objetivo deste estudo é apresentar uma análise da produção científica na área de gestão de riscos no setor público, com enfoque nas metodologias, por meio de uma revisão sistemática de literatura, com base em artigos publicados entre 2012 e 2022 nos bancos de dados Capes, SPELL e Google Acadêmico. O estudo é caracterizado como uma análise bibliométrica com enfoque qualitativo e quantitativo descritivos. Como resultado da etapa de busca, com base nos critérios de inclusão, foram obtidos, inicialmente, 125 artigos. Após análise e aplicação dos critérios de exclusão, restaram 30 artigos para compor o escopo final da pesquisa. Observou-se um aumento na produção científica sobre a temática no período compreendido entre 2019 e 2021. A maior parcela das publicações teve como objeto o setor público de forma ampla e uma parcela significativa dos estudos se baseia na metodologia da ABNT ISO 31000. O estudo de caso foi o método preponderante, sendo utilizado em 37% dos artigos.
Marketing de influência: um estudo sobre os digital influencers e o comportamento de seguidores no instagram, em Ipiaú-BA
Authors: Santos Vanessa de Assis , Ferreira Andressa de Sousa Santos , Helfenstein Lara Amorim , Do Vale Júnior João Sotero , Da Silva Manoel Mendes , Rosa Nôan Kalil Bájun Santa , De Assis Clodoaldo Santos , Santos Thiago Brito
Published: April 2023

O presente artigo apresenta as vantagens e desafios dos Digital Influencers em Ipiaú-BA, identificando as estratégias utilizadas na gestão do perfil no Instagram e o comportamento de consumo dos seguidores. O método utilizado foi a pesquisa exploratória, através de levantamento de dados com a pesquisa bibliográfica e pesquisa de campo, utilizando questionário e observação, aplicados a cinco Influencers. O artigo confirmou que o Digital Influencer tem um papel importante nas decisões de compra dos consumidores e que esse processo acontece de forma orgânica, influenciando no comportamento e opinião dos seus seguidores através de indicações de marcas, produtos, dicas, entre outros. Quanto ao público predominante, nos perfis analisados, é feminino,  e busca conteúdos de Moda e beleza. Para futuras investigações, recomenda-se uma pesquisa etnográfica sobre os seguidores e sobre o processo de profissionalização dos Digital Influencers.
Gestão de projetos na administração pública: uma experiência em um município de médio porte do Paraná
Authors: Sanches Tales Leon Biazão , Yamaji Daniela Mayumi , Vieira Saulo Fabiano Amâncio , Suguihiro Vera Lucia Tieko
Published: April 2023

O objetivo desta pesquisa foi implementar um escritório de gestão de projetos na Prefeitura de um município de médio porte. Projetos são atividades não rotineiras, executadas em tempo definido e com resultados únicos, portanto, requerem uma gestão complexa e peculiar ao restante da rotina burocrática da administração pública. Nas mais de 30 secretarias do município, não havia padrão para a gestão dos projetos, acarretando atrasos, aumento nos custos e ineficiência. No período de 2019 e 2020 foram acompanhados 396 projetos dos diferentes setores, centralizados em um escritório de gestão de projetos na Secretaria de Governo. Os projetos foram inseridos em um software de gestão e foram criados indicadores para o acompanhamento. Não é possível afirmar ganhos ou prejuízos aos projetos acompanhados, uma vez que antes da pesquisa não eram acompanhados de maneira unificada na Prefeitura. A cultura da gestão de projetos e do papel do escritório de projetos somente será possível a longo prazo na Prefeitura, pois implica em mudanças na rotina e relações da máquina pública municipal. A pesquisa contribui com a literatura científica na área de gestão de projetos na administração pública municipal brasileira, já que há poucos estudos dedicados a este assunto até o momento. Corrobora de maneira prática com a gestão pública, oferecendo subsídios para outros municípios similares.
Immunohistochemical Expression of Alpha Smooth Muscle Actin in Infiltrating Ductal Carcinoma of Breast and its Association with Histopathological and Hormonal Status: A Cross-sectional Study
Authors: Nagaraju Vajja , Doddagowda Shilpa Mannigatta , Sunanda Supreetha Megalamanne , Annantharamaiah Hemalatha , Raju Kalyani , Sreeramulu Patrapalle Nadipanna
Published: April 2023

Introduction: Breast carcinoma is the second most common cancer and cause of death worldwide, with a mortality rate of 15%. Among various theories regarding the pathogenesis of cancer, the tumour microenvironment is known to play an essential role in cancer development and progression. Aim: To determine the expression of alpha Smooth Muscle Actin (α-SMA) in infiltrating ductal carcinoma of breast carcinoma and its association with histopathological parameters and hormonal receptors status. Materials and Methods: This was a cross-sectional observational study done in Department of Pathology, RL Jalappa Hospital, a tertiary care centre, Karnataka, India from January 2018 to December 2022. A total of 100 cases of Infiltrating Ductal Carcinoma confirmed by histopathological examination were included in the study. All the Haematoxylin and Eosin (H&E)- stained slides were screened for histological type, tumour grade, and nodal metastasis and Immunohistochemistry (IHC) markers like Oestrogen Receptor (ER), Progestrone Receptor (PR), Ki67, Human Epidermal growth factor 2 neu (HER2/neu) and α-SMA were performed. Results: 54% of the subjects were positive for ER, 52% of the subject was positive for PR, and 30% of the subjects were HER2/neu. 53% of the subjects had >14% Ki67 and 47% of the subjects had <14% Ki67.According to molecular typing, 38% was luminal A, 20% was luminal B, Triple-Negative Breast Cancer (TNBC) was present in 30%, and HER2/neu positivity was seen in 12%. According to Nottingham Prognostics Index (NPI), patients were grouped into four categories according to the NPI score: I (excellent) was 15%; II (good) was 36%, III (moderate) was 32%; and IV (poor) was 17%. Conclusion: SMA positivity can be used as an important prognostic factor in infiltrating ductal carcinoma as its stromal expression is associated with grade of the tumour and lymph node status.
Ayurvedic Management of Parkinson's Disease: A Case Report
Authors: Kantharia Shivaranjani J. , Gupta S. N. , Patel Kalapi  B.
Published: April 2023

Parkinson's disease is a neurodegenerative condition which affects the basal ganglia and Substantia Nigra and presents with differing combinations of bradykinesia, rigidity, tremors and loss of postural reflexes. Parkinson's disease has an annual incidence of about 0.2/1000 and a prevalence of 1.2/1000 worldwide. Parkinson's disease is a chronic progressive disease that adds substantial physical, emotional and financial burden to victims and their families. Modern science's management of this condition has shown its limitations with severe side effects. With the changing demand and awareness among people, the role of Āyurveda is an emerging reality. A 65 years old male patient priory, diagnosed with Parkinson's disease came to our P.D Patel Ayurvedic  hospital, Nadiad with chief complaints of continuous tremors in his right extremities and difficulty in walking for one year. Before he came to us, he took conventional medicines for the same complaints but didn't get satisfactory results. Here he was consulted and diagnosed as having Kampavāta, and he was admitted and treated accordingly with Śodhana (pacifying) and Śamana Cikitsā (purifying Treatment). The present study reveals that this treatment protocol is effective in managing patients with Parkinson's disease. Extended follow-up and more patients are required to reach any conclusion. Still, in this case, it can be stated that this Treatment is a hope for the patients of Parkinson's disease who are not benefited from conventional medicaments.
PENGARUH PERCEIVED EASE OF USE, PERCEIVED USEFULNESS, SECURITY DAN TRUST TERHADAP INTENTION TO USE APLIKASI JAGO
Authors: Kurnia Ricardo Ananta , Tandijaya Trixie Nova Bella
Published: April 2023

Intention to use merupakan salah satu faktor penting yang harus diperhatikan oleh pengembang bank digital dalam membuat keputusan untuk tetap menjadi pilihan utama pengguna bank digital. Penelitian ini bertujuan untuk mengetahui pengaruh dari perceived ease of use, perceived usefulness, security dan trust terhadap intention to use. Jenis penelitian yang dilakukan adalah penelitian kuantitatif dengan teknik purposive sampling menggunakan software smartPLS v4. Hasil penemuan ini menemukan bahwa perceived ease of use dan security tidak memiliki pengaruh secara langsung terhadap intention to use, namun perceived usefulness dan trust memiliki pengaruh yang signifikan dan positif terhadap intention to use aplikasi JAGO.
Evaluation of Air Quality Monitoring Networks in Korea: Focusing on Wind Direction and Speed
Authors: Cha Hoyoung , Jun Changhyun , Lee Jinwook , Baik Jongjin
Published: April 2023

In this study, we suggested a methodology for evaluating the appropriateness of an air quality network using monthly wind direction and speed. First, the nearest weather station was identified using the latitude and longitude of the Air Quality Monitoring system (AQMs) in 2020. Next, the wind direction and wind speed data measured by the nearest weather station from 2010 to 2021 were applied to AQMs. Finally, a map with the range of air pollution influence was produced while varying air pollution influence distance and air pollution influence angle. On varying conditions, there were consistent areas in Gangwon-do that were without a range of air pollution influence. The percentage of areas without a range of air pollution influence in entire areas called percentage by non-measurement. The results derived are as follows: it showed that the percentage by non-measurement had an inverse relationship with the air pollution influence angle and distance, then it was from 0.01% to 48.86% for each condition. The method could propose additional AQMs locations based on the range of air pollution influence. The results indicate that the proportion of areas excluded from the impact range of air pollution should be considered when establishing regulations for additional installation of air quality monitoring systems.
Behavior Analysis of Prestressed Steel Composite Concrete Girder Joint
Authors: Kang Sunho , Na Hyongcheol , Moon Dain , Han Junhee , Lee Heeyoung
Published: April 2023

Recently, studies have been actively conducted for increasing the length of bridges by connecting steel composite and concrete girders. This study proposes a prestressed steel composite concrete girder and analyzes the composite behavior of the proposed steel composite concrete girder joint. The full-size specimen 3000 × 1000 × 1200 mm was fabricated. In the construction stage experiment, the strains of the top flange, vertical steel plate, and web were measured by applying prestressing; moreover, the allowable stress of the connection between the concrete and steel composite girder was analyzed via the finite element analysis. The stress in the connection between the steel girder and concrete girder was found to be within allowable stress at all construction stages. Finite element analysis revealed that the joint of the proposed girder exhibited appropriate structural behavior.
Changes in Waivered Clinicians Prescribing Buprenorphine and Prescription Volume by Patient Limit
Authors: Luo Qian , Erikson Clese E.
Published: April 2023

This study uses data from a Drug Enforcement Administration list of Drug Addiction Treatment Act (DATA)–waivered clinicians to examine trends in DATA-waivered clinicians’ active participation in prescribing buprenorphine overall and by patient limits between January 2017 and May 2021.
Performance of an Artificial Intelligence Chatbot in Ophthalmic Knowledge Assessment
Authors: Mihalache Andrew , Popovic Marko M. , Muni Rajeev H.
Published: April 2023

Importance

ChatGPT is an artificial intelligence (AI) chatbot that has significant societal implications. Training curricula using AI are being developed in medicine, and the performance of chatbots in ophthalmology has not been characterized.

Objective

To assess the performance of ChatGPT in answering practice questions for board certification in ophthalmology.

Design, Setting, and Participants

This cross-sectional study used a consecutive sample of text-based multiple-choice questions provided by the OphthoQuestions practice question bank for board certification examination preparation. Of 166 available multiple-choice questions, 125 (75%) were text-based.

Exposures

ChatGPT answered questions from January 9 to 16, 2023, and on February 17, 2023.

Main Outcomes and Measures

Our primary outcome was the number of board certification examination practice questions that ChatGPT answered correctly. Our secondary outcomes were the proportion of questions for which ChatGPT provided additional explanations, the mean length of questions and responses provided by ChatGPT, the performance of ChatGPT in answering questions without multiple-choice options, and changes in performance over time.

Results

In January 2023, ChatGPT correctly answered 58 of 125 questions (46%). ChatGPT’s performance was the best in the category general medicine (11/14; 79%) and poorest in retina and vitreous (0%). The proportion of questions for which ChatGPT provided additional explanations was similar between questions answered correctly and incorrectly (difference, 5.82%; 95% CI, −11.0% to 22.0%; χ21 = 0.45; P = .51). The mean length of questions was similar between questions answered correctly and incorrectly (difference, 21.4 characters; SE, 36.8; 95% CI, −51.4 to 94.3; t = 0.58; df = 123; P = .22). The mean length of responses was similar between questions answered correctly and incorrectly (difference, −80.0 characters; SE, 65.4; 95% CI, −209.5 to 49.5; t = −1.22; df = 123; P = .22). ChatGPT selected the same multiple-choice response as the most common answer provided by ophthalmology trainees on OphthoQuestions 44% of the time. In February 2023, ChatGPT provided a correct response to 73 of 125 multiple-choice questions (58%) and 42 of 78 stand-alone questions (54%) without multiple-choice options.

Conclusions and Relevance

ChatGPT answered approximately half of questions correctly in the OphthoQuestions free trial for ophthalmic board certification preparation. Medical professionals and trainees should appreciate the advances of AI in medicine while acknowledging that ChatGPT as used in this investigation did not answer sufficient multiple-choice questions correctly for it to provide substantial assistance in preparing for board certification at this time.
The Influence of Design Modifications and Microstructured Surface Topographies on Bleb Survival after Glaucoma Tube Shunt Implantation
Authors: van Mechelen Ralph J. S. , Sudarsanam Phani , Bertens Christian J. F. , Tas Mehmet O. , Gijbels Marion J. J. , Pinchuk Leonard , de Boer Jan , Beckers Henny J. M.
Published: April 2023

Lowering intraocular pressure (IOP) by placement of a glaucoma shunt is an effective treatment for glaucoma. However, fibrosis of the outflow site can hamper surgical outcome. In this study, the antifibrotic effect of adding an endplate (with or without microstructured surface topographies) to a microshunt made of poly(styrene‐block‐isobutylene‐block‐styrene) is investigated. New Zealand white rabbits are implanted with a control implant (without endplate) and modified implants. Afterward, bleb morphology and IOP is recorded for 30 days. After killing of the animals, eyes are collected for histology, Addition of an endplate extended bleb survival, Topography‐990 has the longest recorded bleb‐survival time. Histology reveals that the addition of an endplate increases the presence of myofibroblasts, macrophages, polymorphonuclear cells, and foreign body giant cells compared to the control. However, an increased capsule thickness and inflammatory response are observed in the groups with surface topographies, The addition of an endplate results in prolonged bleb survival, demonstrating that engineering of the shape of glaucoma implants could prolong bleb functionality. Future research should further elaborate the effect of surface topographies on long‐term bleb survival, since an increased presence of pro‐fibrotic cells and increased capsule thickness are observed compared to the control.
An Antibacterial and Anti‐Oxidative Hydrogel Dressing for Promoting Diabetic Wound Healing and Real‐Time Monitoring Wound pH Conditions with a NIR Fluorescent Imaging System
Authors: Zong Yuange , Zong Beige , Zha Ruyan , Zhang Yi , Li Xianghong , Wang Yanying , Fang Huaifang , Wong Wing‐Leung , Li Chunya
Published: April 2023

The design and synthesis of multifunctional chitosan hydrogels based on polymerized ionic liquid and a near‐infrared (NIR) fluorescent probe (PIL‐CS) is a promising strategy, which not only prevents the transition from acute to chronic wounds, but also provides prompt measures regarding microenvironmental alterations in chronic wounds. PIL‐CS hydrogel can real‐time visualize wound pH through in vivo NIR fluorescent imaging and also feature the pH‐responsive sustained drug release, such as antioxidant, to eliminate reactive oxygen species (ROS) and to boost diabetic wound healing. PIL‐CS hydrogel is specific, sensitive, stable, and reversible in response to pH changes at the wound site. It, therefore, enables real‐time monitoring for a dynamic pH change in the microenvironment of irregular wounds. PIL‐CS hydrogel is also designed to possess many merits including high water containment and swelling rate, good biocompatibility, electrical conductivity, antifreeze, tissue adhesion, hemostatic performance, and efficient antibacterial activity against MRSA. In vivo studies showed that PIL‐CS hydrogel provided fast diabetic wound healing support, promoted vascular endothelial growth factor (VEGF) production, and reduced ROS and tumor necrosis factor (TNF‐α) generation. The results support that the hydrogels coupled with NIR fluorescent probes can be an excellent diabetic wound dressing for enhancing and real‐time monitoring skin restoration and regeneration.