bluuebunny/crossref_metadata_2025 huggingface dataset:
Hiding Sensitive Itemsets Using Sibling Itemset Constraints
Authors: Yildiz Baris , Kut Alp , Yilmaz Reyat
Published: July 2022

Data collection and processing progress made data mining a popular tool among organizations in the last decades. Sharing information between companies could make this tool more beneficial for each party. However, there is a risk of sensitive knowledge disclosure. Shared data should be modified in such a way that sensitive relationships would be hidden. Since the discovery of frequent itemsets is one of the most effective data mining tools that firms use, privacy-preserving techniques are necessary for continuing frequent itemset mining. There are two types of approaches in the algorithmic nature: heuristic and exact. This paper presents an exact itemset hiding approach, which uses constraints for a better solution in terms of side effects and minimum distortion on the database. This distortion creates an asymmetric relation between the original and the sanitized database. To lessen the side effects of itemset hiding, we introduced the sibling itemset concept that is used for generating constraints. Additionally, our approach does not require frequent itemset mining executed before the hiding process. This gives our approach an advantage in total running time. We give an evaluation of our algorithm on some benchmark datasets. Our results show the effectiveness of our hiding approach and elimination of prior mining of itemsets is time efficient.
Constructing Adaptive Multi-Scale Feature via Transformer-Aware Patch for Occluded Person Re-Identification
Authors: Liu Zhi , Mu Xingyu , Dong Shidu , Lu Yunhua , Jiang Mingzi
Published: July 2022

Person re-identification (Re-ID) aims to retrieve a specific pedestrian across a multi-disjoint camera in a surveillance system. Most of the research is based on a strong assumption that images should contain a full human torso. However, it cannot be guaranteed that all the people have a clear foreground because they are out of constraint. In the real world, a variety of occluded situations frequently appear in video monitoring, which impedes the recognition process. To settle the occluded person Re-ID issue, a new Dual-Transformer symmetric architecture is proposed in this work, which can reduce the occluded impact and build a multi-scale feature. There are two contributions to our proposed model. (i) A Transformer-Aware Patch Searching (TAPS) module is devised to learn visible human region distribution using a multiheaded self-attention mechanism and construct a branch of distributed information attention scale. (ii) An Adaptive Visible-Part Cropping (AVPC) Strategy, with two steps of cropping and weakly-supervised learning, is used to generate a fine-scale visible image for another branch. Only ID labels are utilized to restrain TAPS and AVPC without any extra visible-part annotation. Extensive experiments are conducted on two occluded person Re-ID benchmarks, confirming that our approach performs a SOTA or comparable effect.
Formation of Comets
Authors: Blum Jürgen , Bischoff Dorothea , Gundlach Bastian
Published: July 2022

Questions regarding how primordial or pristine the comets of the solar system are have been an ongoing controversy. In this review, we describe comets’ physical evolution from dust and ice grains in the solar nebula to the contemporary small bodies in the outer solar system. This includes the phases of dust agglomeration, the formation of planetesimals, their thermal evolution and the outcomes of collisional processes. We use empirical evidence about comets, in particular from the Rosetta Mission to comet 67P/Churyumov–Gerasimenko, to draw conclusions about the possible thermal and collisional evolution of comets.
Expression of a Functional Mx1 Protein Is Essential for the Ability of RIG-I Agonist Prophylaxis to Provide Potent and Long-Lasting Protection in a Mouse Model of Influenza A Virus Infection
Authors: Schwab Lara S. U. , Villalón-Letelier Fernando , Tessema Melkamu B. , Londrigan Sarah L. , Brooks Andrew G. , Hurt Aeron , Coch Christoph , Zillinger Thomas , Hartmann Gunther , Reading Patrick C.
Published: July 2022

RIG-I is an innate sensor of RNA virus infection and its activation induces interferon-stimulated genes (ISGs). In vitro studies using human cells have demonstrated the ability of synthetic RIG-I agonists (3pRNA) to inhibit IAV replication. However, in mouse models of IAV the effectiveness of 3pRNA reported to date differs markedly between studies. Myxoma resistance (Mx)1 is an ISG protein which mediates potent anti-IAV activity, however most inbred mouse strains do not express a functional Mx1. Herein, we utilised C57BL/6 mice that do (B6.A2G-Mx1) and do not (B6-WT) express functional Mx1 to assess the ability of prophylactic 3pRNA treatment to induce ISGs and to protect against subsequent IAV infection. In vitro, 3pRNA treatment of primary lung cells from B6-WT and B6.A2G-Mx1 mice resulted in ISG induction however inhibition of IAV infection was more potent in cells from B6.A2G-Mx1 mice. In vivo, a single intravenous injection of 3pRNA resulted in ISG induction in lungs of both B6-WT and B6.A2G-Mx1 mice, however potent and long-lasting protection against subsequent IAV challenge was only observed in B6.A2G-Mx1 mice. Thus, despite broad ISG induction, expression of a functional Mx1 is critical for potent and long-lasting RIG-I agonist-mediated protection in the mouse model of IAV infection.
Systematic Review of Hepatitis C Virus Prevalence in the WHO Western Pacific Region
Authors: Iversen Jenny , Wand Handan , Chan Po-Lin , Le Linh-Vi , Maher Lisa
Published: July 2022

Background: This review aimed to identify hepatitis C virus (HCV) prevalence estimates among the general population and six key populations (people who inject drugs, men who have sex with men, sex workers, prisoners/detainees, Indigenous people, and migrants) in the World Health Organization Western Pacific Region (WHO WPR). Methods: Original research articles published between 2016 and 2020 were identified from bibliographic databases. Publications were retrieved, replicas removed, and abstracts screened. Retained full texts were assessed and excluded if inclusion criteria were not met. Methodological quality was assessed using the Johanna Briggs Institute critical appraisal checklist for prevalence data. Data on HCV exposure and active infection were extracted and aggregated and forest plots generated for each population by country. Results: There were no HCV prevalence estimates in any population for more than half of WPR countries and territories. Among the 76 estimates, 97% presented prevalence of exposure and 33% prevalence of active infection. General population viraemic prevalence was 1% or less, except in Mongolia. Results confirm the endemic nature of HCV among people who inject drugs, with estimates of exposure ranging from 30% in Cambodia to 76% in Hong Kong. Conclusions: Countries require detailed knowledge of HCV prevalence in diverse populations to evaluate the impact of efforts to support WHO HCV elimination goals. Results provide baseline estimates from which to monitor and evaluate progress and by which to benchmark future elimination efforts.
Origins and Evolution of Seasonal Human Coronaviruses
Authors: Otieno James R. , Cherry Joshua L. , Spiro David J. , Nelson Martha I. , Trovão Nídia S.
Published: July 2022

Four seasonal human coronaviruses (sHCoVs) are endemic globally (229E, NL63, OC43, and HKU1), accounting for 5–30% of human respiratory infections. However, the epidemiology and evolution of these CoVs remain understudied due to their association with mild symptomatology. Using a multigene and complete genome analysis approach, we find the evolutionary histories of sHCoVs to be highly complex, owing to frequent recombination of CoVs including within and between sHCoVs, and uncertain, due to the under sampling of non-human viruses. The recombination rate was highest for 229E and OC43 whereas substitutions per recombination event were highest in NL63 and HKU1. Depending on the gene studied, OC43 may have ungulate, canine, or rabbit CoV ancestors. 229E may have origins in a bat, camel, or an unsampled intermediate host. HKU1 had the earliest common ancestor (1809–1899) but fell into two distinct clades (genotypes A and B), possibly representing two independent transmission events from murine-origin CoVs that appear to be a single introduction due to large gaps in the sampling of CoVs in animals. In fact, genotype B was genetically more diverse than all the other sHCoVs. Finally, we found shared amino acid substitutions in multiple proteins along the non-human to sHCoV host-jump branches. The complex evolution of CoVs and their frequent host switches could benefit from continued surveillance of CoVs across non-human hosts.
Immune Response after mRNA COVID-19 Vaccination in Lung Transplant Recipients: A 6-Month Follow-Up
Authors: Tobudic Selma , Benazzo Alberto , Koblischke Maximilian , Schneider Lisa , Blüml Stephan , Winkler Florian , Schmidt Hannah , Vorlen Stefan , Haslacher Helmuth , Perkmann Thomas , Burgmann Heinz , Jaksch Peter , Aberle Judith H. , Winkler Stefan
Published: July 2022

Background and objective: This prospective cohort study analyzed the immune response to COVID-19 mRNA vaccines in lung transplant recipients (LuTRs) compared to healthy controls (HCs) at a 6-month follow-up. Methods: After the first two doses of either BNT162b2 or mRNA-1273, SARS-CoV-2 antibodies were measured in LuTRs (n = 57) and sex- and age-matched HCs (n = 57). Antibody kinetics during a 6-month follow-up and the effect of a third vaccine dose were evaluated. Humoral responses were assessed using the Elecsys® Anti-SARS-CoV-2 S immunoassay. In 16 LuTRs, SARS-CoV-2-specific T cell responses were quantified using IFN-γ ELISpot assays. Results: Seroconversion rates were 94% and 100% after the first and second vaccine dose, respectively, in HCs, while only 19% and 56% of LuTRs developed antibodies. Furthermore, 22 of 24 LuTRs who received the third vaccine dose showed seroconversion (five of seven primary non-responders and 17 of 17 primary responders). A T cell response against SARS-CoV-2-spike S1 and/or S2 was detected in 100% (16/16) of HCs and 50% (8/16) of LuTRs. Conclusions: The data suggest that LuTRs have reduced humoral and cellular immune responses after two doses of COVID-19 mRNA vaccination when compared to HCs. A third dose may be of substantial benefit.
Clinical and Molecular Characterization of a Rare Case of BNT162b2 mRNA COVID-19 Vaccine-Associated Myositis
Authors: Magen Eli , Mukherjee Sumit , Bhattacharya Mahua , Detroja Rajesh , Merzon Eugene , Blum Idan , Livoff Alejandro , Shlapobersky Mark , Baum Gideon , Talisman Ran , Cherniavsky Evgenia , Dori Amir , Frenkel-Morgenstern Milana
Published: July 2022

Initial clinical trials and surveillance data have shown that the most commonly administered BNT162b2 COVID-19 mRNA vaccine is effective and safe. However, several cases of mRNA vaccine-induced mild to moderate adverse events were recently reported. Here, we report a rare case of myositis after injection of the first dose of BNT162b2 COVID-19 mRNA vaccine into the left deltoid muscle of a 34-year-old, previously healthy woman who presented progressive proximal muscle weakness, progressive dysphagia, and dyspnea with respiratory failure. One month after vaccination, BNT162b2 vaccine mRNA expression was detected in a tissue biopsy of the right deltoid and quadriceps muscles. We propose this case as a rare example of COVID-19 mRNA vaccine-induced myositis. This study comprehensively characterizes the clinical and molecular features of BNT162b2 mRNA vaccine-associated myositis in which the patient was severely affected.
Fermented Rubber Seed Kernel with Yeast in the Diets of Tropical Lactating Dairy Cows: Effects on Feed Intake, Hematology, Microbial Protein Synthesis, Milk Yield and Milk Composition
Authors: Ouppamong Thanaporn , Gunun Nirawan , Tamkhonburee Chayapol , Khejornsart Pichad , Kaewpila Chatchai , Kesorn Piyawit , Kimprasit Thachawech , Cherdthong Anusorn , Wanapat Metha , Polyorach Sineenart , Foiklang Suban , Gunun Pongsatorn
Published: July 2022

The objective of the present study was to analyze the effects of yeast-fermented rubber seed kernels (YERSEK) on the feed intake, hematology, microbial protein synthesis, milk yield, and milk composition in dairy cows. Six crossbred Holstein Friesian (HF) × Thai lactating dairy cows with 110 ± 10 days in milk were randomly assigned to three different amounts of YERSEK at 0%, 10%, and 20% in a concentrate mixture using a 3 × 3 repeated Latin square design. Cows were fed with concentrate diets at a concentrate-to-milk yield ratio of 1:1.5, with rice straw fed ad libitum. The inclusion of YERSEK did not adversely affect feed intake, nutrient intake, or digestibility (p > 0.05), whereas ether extract intake and digestibility linearly increased in dairy cows receiving YERSEK (p < 0.01). Increasing YERSEK levels did not adversely affect blood urea nitrogen (BUN) levels, hematological parameters, or microbial protein synthesis (p > 0.05). Supplementation of YERSEK did not influence milk production, lactose, or protein levels (p > 0.05). However, milk fat and total solids decreased linearly (p < 0.05) with the addition of YERSEK. In conclusion, in a concentrate diet, YERSEK could be used as a protein source without negative effects on feed intake, digestibility, hematology, microbial protein synthesis, or milk yield. However, it reduced the milk fat and total solids of tropical lactating dairy cows.
Seroprevalence of SARS-CoV-2 in Client-Owned Cats from Portugal
Authors: Oliveira Andreia , Pereira Maria Aires , Mateus Teresa Letra , Mesquita João R. , Vala Helena
Published: July 2022

The close contact between humans and domestic cats raises concerns about the potential risks of SARS-CoV-2 transmission. Thus, this study aims to investigate anti-SARS-CoV-2 seroprevalence in client-owned cats from Portugal and evaluate the infection risk of cats that maintain contact with human COVID-19 cases. A total of 176 cats, belonging to 94 households, were sampled. Cat owners answered an online questionnaire, and cats were screened for antibodies against SARS-CoV-2 using a commercial ELISA. Twenty (21.3%) households reported at least one confirmed human COVID-19 case. Forty cats (22.7%) belonged to a COVID-19-positive and 136 (77.3%) to a COVID-19-negative household. The seroprevalences of cats from COVID-19-positive and -negative households were 5.0% (2/40) and 0.7% (1/136). The two SARS-CoV-2-seropositive cats from COVID-19-positive households had an indoor lifestyle, and their owners stated that they maintained a close and frequent contact with them, even after being diagnosed with COVID-19, pointing towards human-to-cat transmission. The SARS-CoV-2-seropositive cat from the COVID-19-negative household had a mixed indoor/outdoor lifestyle and chronic diseases. Owners of the three SARS-CoV-2-seropositive cats did not notice clinical signs or behavior changes. This study highlights the low risk of SARS-CoV-2 transmission from COVID-19-positive human household members to domestic cats, even in a context of close and frequent human–animal contact.
Equine Suture Exostosis: A Review of Cases from a Multicenter Retrospective Study
Authors: Verwilghen Denis , Easley Jack , Zwick Timo , Uhlhorn Maggy , Grulke Sigrid , Simhofer Hubert , Townsend Neil , Liyou Oliver , Bodeus Fabrice , Zani Davide , Vlaminck Lieven , Pearce Chris , Staszyk Carsten , Bienert-Zeit Astrid
Published: July 2022

Suture exostosis is an intriguing and not uncommon pathology that has to be included in the differential diagnosis for horses with swelling of the head. Although several singular case reports have been published, no large case series is available. The aim of this study is to report a multicentric retrospective collection of suture exostosis cases. Data concerning horses with suture exostosis in the facial region were collected retrospectively. Information regarding breed, age, gender, history, imaging findings, initiated treatment, response to treatment and follow up was recorded. One hundred and five cases of various breeds were reported. Analysis revealed the cases could be grouped into four entities: 45 developed following sino-nasal surgery, 23 following trauma, seven with underlying sinus pathology and 25 idiopathic. Treatment consisted of sequestra removal, plate fixation, antimicrobial and anti-inflammatory drugs or no treatment. Whereas initial localized pain fades within few days or weeks, resolution or reduction of the swelling was obtained in most cases after 3 months to 1.5 years. The etiopathogenesis of suture exostosis seems to consist of different entities. Identification of an underlying cause, particularly the presence of a bone sequester and infection is important to speed up resolution and before concluding an idiopathic case. When performing sinusotomies, it is important to provide as little trauma as possible to the surgical site in order to prevent suture exostosis as a complication.
Phosphate Uptake by Precipitation in Model Animal Wastewaters: Adjusting Ionic Strength and Ionic Composition to Maximize Phosphorus Removal
Authors: Butler Elizabeth , Ding Yifan , Sabatini David
Published: July 2022

While phosphorus is a limited resource that is essential for agriculture, its release to the environment adversely impacts water quality. At the same time, animal wastewaters contain significant quantities of phosphorus and nitrogen that can be recovered for beneficial use. Phosphorus uptake experiments were performed with magnesium-treated corn-cob char and with magnesium silicate prepared using silicate from rice straw at pH 8 and 9. The concentration of dissolved phosphorus as a function of total added ammonium chloride (NH4Cl) was determined, and chemical equilibrium modeling was used to investigate the concentration trends of dissolved and mineral species. According to chemical equilibrium modeling, carbonate alkalinity exerted a significant magnesium demand, with approximately half of all added magnesium forming magnesite (MgCO3(s)). As total added NH4Cl increased, excess Cl− complexed with dissolved Mg2+ in competition with orthophosphate, freeing orthophosphate to precipitate, mainly as the mineral struvite (NH4MgPO4·6H2O(s)). As the concentration of added NH4Cl increased by a factor of ten, measured concentrations of dissolved phosphorus decreased by a factor of ten, meaning that ionic composition has the potential to significantly impact the amount of phosphorus that can be recovered from wastewaters for beneficial use.
Evaluation of Well Improvement and Water Quality Change before and after Air Surging in Bedrock Aquifers
Authors: Ha Kyoochul , An Hyowon , Lee Eunhee , Lee Sujeong , Kim Hyoung Chan , Ko Kyung-Seok
Published: July 2022

When a drought occurs, drought response is mainly focused on the development of new wells. However, it is inefficient to respond to droughts by developing additional new wells in areas where many existing groundwater wells have been developed. Rather, it is necessary to find a way to use the existing wells efficiently and, if possible, increase the amount of groundwater that can be pumped. In this study, a pumping test and analysis method were used to evaluate the effect of air surging on improving existing wells. Drawdowns were reduced in the test wells, and, accordingly, the average specific discharges and transmissivities were increased. Since many factors in bedrock aquifers must be considered in order to calculate the well efficiency for the evaluation of the well performance, it seems better to compare the pumping rate and drawdown based on a reference time calculated by an adjusted time. Such factors could be the uncertainty of the aquifer model, aquifer inhomogeneity, and a hydrogeologic boundary. Additionally, in this process, the changes in groundwater quality were investigated, as well as the substances that caused the degradation of the well performance in bedrock aquifers. According to the results of the groundwater quality analysis conducted during the surging process and the step drawdown tests, there was no significant groundwater quality change before and after surging, but it appeared that there was an inflow of contaminants from the upper shallow strata close to the surface. According to the results of the XRD, XRF, and SEM-EDS analyses for the substances collected during surging and the substances deposited inside the well pipe, most of the substances were Fe-related amorphous components. Additionally, Fe coexisted with components such as As, V, and Zn, which formed the well casing together with Fe and were eluted in the surging process and step drawdown tests.
An Artificial Oasis in a Deadly Desert: Practices and Enlightenments
Authors: Zhao Ying , Xue Jie , Wu Nan , Hill Robert Lee
Published: July 2022

Building highway and its biological protection system in a drought-affected shifting-sand desert is a great challenge. This challenge was completed by the construction of the Taklimakan Desert Highway Shelterbelt (TDHS)—the longest of its kind in the world (436 km). The TDHS can serve as a model for highway construction and desertification control using eco-friendly and cost-effective approaches in other desert regions. Notably, we proved that local saline groundwater irrigation offers potential advantages and opportunities for the growth of halophytes and sandy soil development in hyper-arid desert environments. Here, we systematically (1) summarize the project, its results, and vital technical issues of saline water irrigation; (2) address soil hydrological processes that play a crucial role in maintaining those systems; and (3) highlight useful insights for soil development, plant survival, and soil–plant–water–biota synergy mechanisms. Indeed, the TDHS project has provided a proof of concept for restoration and desert greening initiatives.
Possible Increases in Floodable Areas Due to Climate Change: The Case Study of Calabria (Italy)
Authors: Barbaro Giuseppe , Bombino Giuseppe , Foti Giandomenico , Barillà Giuseppina Chiara , Puntorieri Pierfabrizio , Mancuso Pierluigi
Published: July 2022

Coastal flooding is an important current issue due to climate change and due to significant increases in anthropogenic pressures observed in the second half of the last century. Indeed, climate change has been causing an increase in the frequency and the intensity of various natural events such as floods and sea storms; anthropogenic pressures have caused an increase in impermeable surfaces with negative consequences on the vulnerability of territories under the action of natural events. In this paper, we analyze the effects of climate change in terms of possible increases in floodable areas and in terms of population, infrastructure, coastal dunes, and sites of social, economic, and strategic interest exposed along the coasts of the region of Calabria in southern Italy. Calabria was chosen as a case study due to its geomorphological peculiarities and its considerable anthropogenic pressures. These peculiarities cause significant variability of weather and sea conditions among the different coastal areas, which influences the coastal dynamics and the characteristics of meteorological events. The main results show that, in the analyzed areas, the floodable areas double between current and future scenarios, involving both significant percentages of the population and railways, highways, industrial areas, and coastal dunes.
Improving Daily Streamflow Forecasting Using Deep Belief Net-Work Based on Flow Regime Recognition
Authors: Shen Jianming , Zou Lei , Dong Yi , Xiao Shuai , Zhao Yanjun , Liu Chengjian
Published: July 2022

Streamflow forecasting is of great significance for water resources planning and management. In recent years, numerous data-driven models have been widely used for streamflow forecasting. However, the traditional single data-driven model ignores the utilization of different streamflow regimes. This study proposed an integrated framework for daily streamflow forecasting based on the regime recognition of flow sequences. The framework integrates self-organizing maps (SOM) for identifying streamflow sub-sequences, the random forests (RF) algorithm to select input variables for different streamflow sub-sequences, and a deep belief network (DBN) for establishing complex relationships between the selected input variables and streamflows for different sub-sequences. Specifically, the integrated framework was applied to forecast daily streamflow at the Xiantao hydrological station in the Hanjiang River Basin, China. The results show that the developed integrated framework has higher streamflow prediction accuracy than the single data-driven model (i.e., the DBN model in this study), with Nash efficiency coefficient (NSE) of 0.91/0.81 and coefficient of determination (R2) of 0.93/0.89 for the integrated framework/DBN model during the validation period, respectively. Additionally, the prediction accuracy of the peak flood was also improved. The relative error of the peak flood derived from the integrated framework was reduced by 4.6%, compared with the single DBN model. Overall, the constructed integration framework, considering the complex characteristic of different flow regimes, could improve the accuracy for daily streamflow forecasting.
C, N, and P Mass Balances in the Bottom Seawater–Surface Sediment Interface in the Reducing Environment due to Anoxic Water of Gamak Bay, Korea
Authors: Jeong Huiho , Kang Yoonja , Cho Hyeonseo
Published: July 2022

Current mass balances of C, N, and P were estimated using a model (Fluxin = Fluxout + ΔFlux) from Gamak Bay, Korea, in August 2017, where eutrophication and reducing conditions are prevalent. To examine the current fluxes of particulate organic carbon (POC), nitrogen (PON), and phosphorus (POP), sinking and re-floating sediment traps were deployed, a sediment oxygen demand (SOD) chamber experiment and ex-situ nutrient incubation experiment were conducted, and Fick’s first law of diffusion was applied. The principal component analysis and cluster analysis were performed to identify the three groups of water masses based on the characteristics of the bay, including the effects of the reducing environment due to the anoxic water mass using 14 bottom water quality parameters. In the reducing environment (sampling point GA4), the SOD20 flux was 3047.2 mg O2/m2/d. Additionally, the net sinking POC flux was 861.0 mg C/m2/d, while 131.8% of the net sinking POC flux (1134.5 mg C/m2/d) was removed toward the overlying water. This indicates that the organic matter that had been deposited was decomposed as a flux of 273.6 mg C/m2/d. The net sinking PON flux was 187.9 mg N/m2/d, whereas 15.8% of the net sinking PON flux was eluted, and 84.2% remained in the surface sediments. The dissolved inorganic nitrogen (DIN) elution flux from the surface sediments consisted of NH4+ elution (33.7 mg N/m2/d) and NOx− elution (−4.1 mg N/m2/d) fluxes. Despite the net sinking POP flux being 26.0 mg P/m2/d, the 47.7 mg P/m2/d of DIP elution flux (179.5% of the net sinking POP flux) was eluted to the overlying water. Similar to C mass balance, the additional elution flux occurred. Therefore, severe eutrophication (16.5 of the Okaichi eutrophication index) with the lowest N:P ratio (2.6) in GA4 was noted. This indicates that not only the freshly exported organic matter to the surface sediments but also the biochemical processes under anoxic conditions played an essential role as a remarkable nutrient source–particularly P–for eutrophication in Gamak Bay, Korea.
Procedimiento para la previsión de tipos de cambio. Aplicación de redes neuronales artificiales EUR/USD
Authors: Oliva de Con Fidel de la , Molina Fernández Reinaldo , Díaz Rodríguez David
Published: July 2022

La previsión del tipo de cambio constituye un elemento fundamental en la estrategia de cobertura frente al riesgo cambiario, lo que impulsa la búsqueda de nuevas técnicas que sean más eficaces. Con el objetivo de facilitar el uso de algoritmos de inteligencia artificial para este propósito, se creó el procedimiento expuesto en este trabajo. Este procedimiento está basado en el uso de métodos cuantitativos para la obtención de la previsión, siendo el más importante la utilización de las redes neuronales artificiales, concretamente las denominadas long short-term memory. Se lleva a cabo la construcción de distintos modelos de los cuales se elige el óptimo usando como criterio de selección la raíz cuadrada del error cuadrático medio. Tras la obtención de modelos que se desempeñan con una efectividad comprendida en el rango de 97.28% - 99.55% se demostró la eficacia del procedimiento.
 
Palabras clave: inteligencia artificial, pronósticos, redes neuronales recurrentes, series de tiempo.
Validación de las dimensiones para auditorías de gestión de la calidad en empresas pesqueras mantenses
Authors: Hidalgo Ávila Argelio Antonio , Zambrano Vera Mónica Janeth , Pinargote Vásquez Nancy Fabiola
Published: July 2022

El sector pesquero en la ciudad de Manta constituye un pilar fundamental dentro del desarrollo económico del cantón y el país, dada la concentración de la industria atunera, reconocida a nivel internacional, fuente generadora de empleo e innovación tecnológica. En este contexto, la gestión de la calidad alcanza especial interés en toda la cadena productiva dentro del sector pesquero. El objetivo de esta investigación es validar las dimensiones fundamentales para la realización de auditorías de gestión de la calidad en las medianas y pequeñas empresas del sector pesquero de la ciudad de Manta, considerando cuatro variables: gerencia, producción, talento humano y medio ambiente. La validación se realizó a través del cálculo del coeficiente de concordancia Kendall, con la participación de siete expertos, determinándose las más prioritarias. Los resultados arrojaron la aceptación de las dimensiones propuestas, dado que el coeficiente de concordancia arrojó una significación de 0, siendo consistente y aceptable.
 
Palabras clave: Gestión de la calidad, auditoría de gestión, coeficiente de concordancia Kendall, normas de calidad, empresas pesqueras
Análisis de la sostenibilidad del comercio autónomo de la calle Alajuela, Portoviejo
Authors: Muñoz Valdivieso Mónica Briggitte , Macías Zambrano Nimia
Published: July 2022

La presente investigación tuvo como objetivo realizar un análisis de sostenibilidad, que permitió determinar los factores que influyen en la sostenibilidad del comercio autónomo de la calle Alajuela, del cantón Portoviejo. La investigación fue descriptiva, con un diseño de investigación no experimental – transaccional de tipo descriptivo. Los métodos que se utilizaron fueron de tipo inductivo, deductivo y estadístico lo cual permitió realizar un análisis de la situación en la que se encuentra. Las técnicas e instrumentos de recolección de información se realizaron mediante la encuesta y la técnica de análisis de información estadística, identificando las problemáticas que tiene como la inseguridad, ubicación, falta de ayuda financiera, competencia alta, espacios reducidos, también se identificaron las variables de aceptación que mantienen la fidelidad de los clientes, y de qué manera las variables de aceptación ayudan al desarrollo sostenible del comercio autónomo de la calle Alajuela en la ciudad de Portoviejo.
 
Palabras clave: Diagnostico, sostenibilidad empresarial, comercio, desarrollo sostenible, variables de aceptación.
Mindfulness: análisis teórico para el mejoramiento de la lectoescritura
Authors: Ortiz Quijije Carmen Cecilia , Ávila Zambrano José Leonardo , Román Cao Eldis
Published: July 2022

Las personas conservan la necesidad de formarse para expresar y desarrollar distintos tipos de capacidades, una de ellas la lectoescritura. El Mindfulness es una técnica que ayuda a mejorar el desenvolvimiento de la lectoescritura, logrando optimizar los conocimientos y aumentando la motivación para aplicarlos adecuadamente en situaciones de aprendizaje. La técnica consiste en instruir a los alumnos por medio de un adiestramiento mental que estimula el desarrollo de habilidades de atención e interés por el estudio logrando la conexión del cuerpo y su entorno. Es así que se declara como objetivo de esta investigación, reconocer las debilidades y fortalezas presentes en los estudiantes en la Unidad Educativa Simón Bolívar respecto a la lectoescritura y el empleo del Mindfulness en el proceso de enseñanza y aprendizaje. La investigación se realizó en la escuela “Simón Bolívar” de la parroquia Membrillo del cantón Bolívar, esta Unidad Educativa cuenta con una población de 37 estudiantes, y 3 docentes, de la cual se tomó de muestra para la recolección de datos e información para la investigación. La metodología utilizada fue cuali-cuantitativa, con un estudio de tipo descriptivo, aplicando instrumentos de análisis bibliográfico, guía de observación y entrevistas. Los resultados mostraron la necesidad de la inserción de la técnica mindfulness y el mejoramiento de la lectoescritura.
Gestión de Proyectos para Imagenología en Hospitales Generales del Instituto Ecuatoriano de Seguridad Social Manabí
Authors: García Martha Monserrate , Zambrano Acosta Jimmy Manuel
Published: July 2022

La gestión de proyectos abarca una variedad de metodologías adaptables. La innovación tecnológica en salud es trascendental, su éxito depende del método para implementar, adquirir o desarrollar los servicios hospitalarios. La investigación tuvo como objetivo desarrollar un modelo de gestión de proyectos para el área de imagenología de los hospitales generales de Manabí del Instituto Ecuatoriano de Seguridad Social. Se aplicó un enfoque mixto, cuantitativo-cualitativo. Se realizó un análisis bibliográfico documental sobre proyectos de imagenología, metodologías y buenas prácticas; para analizar producción y tiempos; con un diseño descriptivo y explicativo de tipo no experimental, transversal. La población y muestra seleccionada fue de doce funcionarios, encargados de la administración de sistemas e imagenología de los hospitales, se utilizaron métodos teóricos, empíricos, estadísticos y técnicas de investigación como encuesta, entrevista y validación a expertos a través del método Delphi. Se analizaron metodologías ágiles y tradicionales, características, factores de aplicación y costos, lo que permitió desarrollar una propuesta de modelo de gestión de proyectos basado en una metodología híbrida que da importancia a la empatía, y se basa en grupos de trabajo, recursos y resultados esperados una vez que se lleve a cabo la implementación.
The Nallur Drama Festival Plays Energetically Performed the Stories of the People Affected by the War in Sri Lanka
Authors: Thevananth Thevanayagam
Published: July 2022

Theatrical performances are not real, but a unique creation of real-life, It consists of two aspects, which are visual (Optical) and audible (acoustic). Both aspects take place in performing time and make a dramatic piece of real life. It is performed only for a limited time. It starts at a certain moment and then lasts and ends at another certain time. There is an actual real lifetime transformed as dramatic time. Then spectators are in real-time and dramatic time at the same time. In North Sri Lankan plays are produced by the stories of war-affected people. Since 2002, the Active Theatre Movement has brought many war-affected people’s stories to the theatre. The personal story expresses the form of effective social relationships, and gives many meanings, because those stories are complex, interconnected, and contradictory, a story performed by the human body is an expression of cultural conflict. Active Theatre Movement worked with no of war-affected people’s stories, like people who have been displaced and homeless for twenty years, struggling people resettled on their own lands after two decades, people suffering from war, not being able to live on their own lands, families lost their property and lives due to war, poverty, land becoming barren, deliberate people being evicted, etc. These factors influence the real life of North Srilanka. These stories have been the theme of the Tamil theatre in the last three decades. When conflict and oppression seem overwhelming, drama can offer hope. Tamil theatre relies on the real stories of the people. It allows people to imagine how struggles and situations can be overcome. This paper employed the Performance as a research method and take advantage of the author’s direct observations and participation Information was also obtained from actors and spectators. The paper concludes that when performing their own stories were very powerful and presented with extraordinary energy even though they are non-actors.
Perancangan Aplikasi Sistem Informasi Akuntansi Laporan Keuangan Menggunakan Microsoft Access 2016
Authors: Sopiah Siti , Afriady Arif
Published: July 2022

Cahaya Printing is a company engaged in printing services and is located in Bandung. Financial reports are important information for internal and external parties. The purpose of this study is to identify and identify the weaknesses of the companys accounting information system, as well as to design the application of financial statements according to the needs and to know the implications. The research method used is a qualitative method with a case study and development approach. Microsoft Access 2016 as a design tool as well as document flowcharts and DFD as tools for the flow of the system. Recording and reporting in the company already uses Microsoft Excel, the results of the design of financial report applications in the form of a list of journal transactions, a list of general ledger transactions, trial balances, income statements, reports of changes in equity, statements of financial position, cash flow statements, cash income and expenditure reports, and a list of charts of accounts. This application is also considered more effective and efficient in overcoming problems related to the previous system
Pengaruh Penatausahaan Aset Tetap Tanah Terhadap Pengamanan Aset Tetap Tanah (Survei Pada OPD Pemerintah Kabupaten Bandung Barat)
Authors: Maudina Yuni , Nugraha Arie Apriadi
Published: July 2022

This research aims to determine the effect of Land Assets Administration on Land Assets Security in West Bandung Government. The population of this research is 45 Regional Apparatus Organization (OPD) in West Bandung Government, with purposive sampling of 25 OPD that had uncertified land and the respondent are 42 staff. This research is quantitave with a quantitative descriptive approach. Data obtained from quisionnaires with simple linear regression analysis using SPSS version 25. The result of this research show that the land assets administration has a significant and positive effect that is 84,1% on land assets security.
Analisis Pengelolaan Aset Daerah Dalam Upaya Meningkatkan Kualitas Laporan Keuangan Daerah (Studi Kasus Pada Badan Keuangan dan Aset Daerah Pemerintah Kabupaten Subang)
Authors: Faisal Anjes Faresh , Rosmiati Mia
Published: July 2022

Management of regional assets in Subang Regency is still a problem finding for BPK. especially on fixed assets in the form of land and buildings that have not been certified. This study uses a qualitative-descriptive method with data obtained through observation, interviews, and literature studies with the research location at the Regional Finance and Asset Agency. Data analysis techniques used are data reduction, data presentation, and drawing conclusions. The results of the study indicate that the management of regional assets in the Subang Regency Government still has several obstacles, such as the lack of quality in the ability of Human Resources to manage regional property, coordination and communication are not optimal. However, the Subang Regency Government continues to strive to improve the quality of financial reports by providing technical guidance to employees managing goods and continuing to follow up on BPK's findings.
Pengaruh CAR dan NPF terhadap Return on Aset dengan Pembiayaan Murabahah Sebagai Variabel Intervening di Bank Muamalat
Authors: Amalia Rida , Setyowati Diharpi Herli , Djatnika Djoni
Published: July 2022

This study aims to determine the direct and indirect effect of Capital Adequacy Ratio and Non-Performing Financing on Return On Assets through Murabahah Financing as an intervening variable. The object of this research is Bank Muamalat Indonesia during the period 2009-2020. The data analysis technique used path analysis with the analysis tool SmartPLS software version 3.0. The data used is secondary data obtained from the quarterly published financial statements of Bank Muamalat for the period 2009-2020. The results of this study indicate the direct effect of CAR has a significant positive effect on Murabahah Financing, NPFt-1 has no effect on Murabahah Financing, CAR has no effect on ROA, NPFt-1 has a significant negative effect on ROA and Murabahah Financing has a significant negative effect on ROA, while the indirect effect it can be concluded that CAR has a significant negative effect on ROA and NPFt-1 has no effect on ROA through Murabahah Financing.
Pengaruh BI Rate, Inflasi, dan Kurs Terhadap Nilai Aktiva Bersih Reksadana Syariah Campuran
Authors: Apriyanto Mohammad , Setyowati Diharpi Herli , Mayasari Ine
Published: July 2022

The development of the Islamic finance industry in Indonesia has experienced a rapid increase, one of which is investment activities that occur in the capital market. Islamic mutual funds are an alternative for the public in investing. Mixed Sharia Mutual Funds are a form of product from sharia mutual funds that have less risk than other types of sharia mutual funds. The measuring instrument in sharia mutual fund investment is Net Asset Value (NAV). Things that can affect,the NAV of a sharia mutual,fund are the BI rate, Inflation, and the Exchange Rate. This study aims to determine the impact of these three variables on the NAV of Islamic mutual funds. Sources of data in the form of secondary data with purposive sampling method. This research uses multiplier,linear regression analys method. The results of this study indicate that the BI Rate and Inflation variables have’s a partially significant effect on the NAV of mixed sharia mutual fund, but the exchange rate variable has no partial significant effect on the NAV of mixed sharia mutual fund. The results also show that the BI Rate, Inflation and Exchange Rate have a simultaneous effect on the NAV of Islamic mutual funds.
Pengaruh Sukuk dan Faktor Internal terhadap Profitabilitas Bank Syariah
Authors: Rusmawan Renanta Ivana Nanda , Juniwati Endang Hatma , Nurdin Ade Ali
Published: July 2022

This study aims to determine the impact Sukuk and Islamic bank internal factors on the profitability BRI Syariah. This study used secondary data using BRI Syariah quarterly reports for the years 2011-2020. The independent variable used is  Sukuk, CAR, FDR, NPF, and BOPO and the dependent variable used is ROE which is used as a measure of the profitability of Islamic banks. This study uses the SPSS program and uses multiple linear regression analysis. The results showed that sukuk, NPF, CAR, FDR, and BOPO simultaneously had an effect on ROE. While partially the issuance of sukuk and FDR has no significant effect on ROE, and NPF, CAR, BOPO has a negative and significant effect on ROE BRI Syariah.
Analisis Pengaruh Faktor Internal dan Faktor Eksternal terhadap Profitabilitas Bank Pembiayaan Rakyat Syariah di Indonesia
Authors: Oktaviani Elsa , Mai Muhamad Umar , Setiawan Setiawan
Published: July 2022

This study aims to determine the magnitude of the influence of the variables FDR, NPF, Firm Size, Infalsi, and GDP on ROA at Rural Bank Syaria in Indonesia. The population used is Rural Bank Syaria registered with the OJK. The data used is secondary data derived from financial reports issued by OJK for the 2016-2020 period. The research method used is quantitative research with pane data regression analysis and is supported by Eviews 9 as a data processing application. The sample used in this study was 99 BPRS. From this study, the results obtained that simultaneously independent variables affect ROA. Partially the variabel FDR, firm size development and GDP have a positive and significant effect on ROA. The NPF variable partially has a negative and significant effect on ROA. And the inflation variable has no significant effect on ROA.
UZAKTAN EĞİTİM ARACILIĞIYLA GERÇEKLEŞTİRİLEN FEN BİLİMLERİ DERSİNİN ETKİLİLİĞİNE İLİŞKİN ÖĞRETMEN GÖRÜŞLERİ
Authors: BİRHAN Hande , DOĞRU Mustafa
Published: July 2022

Bu çalışmanın amacı, uzaktan eğitim aracılığıyla gerçekleştirilen fen bilimleri dersinin etkililiğine ilişkin öğretmen görüşlerinin incelenmesidir. Öğretmen görüşlerinin incelenmesinde nicel ve nitel boyutlarda iki farklı teknik içeren karma teknik kullanılmıştır. Araştırmada 2020-2021 eğitim öğretim yılında Antalya merkez ve Korkuteli ilçelerinde bulunan fen bilimleri öğretmeni olarak çalışmakta olan 130 kişi araştırmanın nicel boyutuna ait örneklemi oluşturmaktadır. Ayrıca bu örneklem içinden seçilen 5 fen bilimleri öğretmeni ile yarı yapılandırılmış görüşmeler aracılığıyla nitel boyutta incelenmiştir. Araştırmanın nicel boyutunun analizi için hazırlanmış olan anket formu Google dokümanlar aracılığıyla online olarak uygulanmış ve veriler toplanmıştır. Veriler istatistiksel analizler yardımıyla analiz edilmiş ve yorumlanmıştır. Araştırma sonuçlarına göre; eğitimdeki fırsat eşitsizliği nedeniyle derslere katılamayan öğrencilerin fazla olması, altyapı yetersizliği, uzaktan eğitimdeki etkileşim eksikliği nedeniyle yüz yüze eğitimin daha etkili olduğu düşünülmektedir. Araştırmanın nitel boyutunun analizinde görüşme soruları katılımcılara yöneltilmiş ve veriler içerik analizi ile analiz edilmiştir. Yapılan analiz sonuçlarına göre uzaktan eğitimin yüz yüze eğitime entegre edilerek gerçekleşmesinin yararlı olacağı ancak yalnızca uzaktan eğitim ile gerçekleştirilen fen bilimleri dersinin yüz yüze eğitime göre daha verimsiz olduğu sonucuna ulaşılmıştır.
C сербского на сербский: Милорад Павич и его перевод Песен западных славян Пушкина
Authors: Radunović Ana Jakovljević
Published: July 2022

Милорад Павич – сербский писатель, переводчик и историк сербской литературы xvii-xix веков, специалист по сербскому барокко и поэзии символизма, является автором лучшего перевода Евгения Онегина на сербский язык. Павич считается переводчиком, подходящим к оригиналу с пиететом, с желанием отразить его метрические и ритмические свойства. Сербский автор перевел три стихотворения из цикла Песни западных славян: Бонапарт и Черногорцы, Песня о Георгии Черном и Воевода Милош. Все песни сербского цикла Пушкина, как считает переводчик, имеют прямое отношение к биографии поэта. Задача статьи – проследить, какими соображениями руководствовался Павич при переводе стихов Пушкина на сербский язык, и как он создавал свой переводческий цикл – Сербские песни Пушкина.