bluuebunny/crossref_metadata_2025 huggingface dataset:
Novel Three-Dimensional Body Scan Anthropometry versus MR-Pelvimetry for Vaginal Breech Delivery Assessment
Authors: Dathan-Stumpf Anne , Lia Massimiliano , Meigen Christof , Bornmann Karoline , Martin Mireille , Aßmann Manuela , Kiess Wieland , Stepan Holger
Published: September 2023

In this prospective, monocentric study, we investigated the potency of a novel three-dimensional (3D) body scanner for external pelvic assessment in birth planning for intended vaginal breech delivery. Between April 2021 and June 2022, 73 singleton pregnancies with intended vaginal birth from breech presentation (>36.0 weeks of gestation) were measured using a pelvimeter by Martin, a three-dimensional body scanner, and MR-pelvimetry. Measures were related to vaginal birth and intrapartum cesarean section. A total of 26 outer pelvic dimensions and 7 inner pelvic measurements were determined. The rate of successful vaginal breech delivery was 56.9%. The AUC (area under the curve) of the obstetric conjugate (OC) measured by MRI for predicting the primary outcome was 0.62 (OR 0.63; p = 0.22), adjusted for neonatal birth weight 0.66 (OR 0.60; p = 0.19). Of the 22 measured 3D body scanner values, the ratio of waist girth to maternal height showed the best prediction (AUC = 0.71; OR 1.27; p = 0.015). The best predictive pelvimeter value was the distantia spinarum with an AUC of 0.65 (OR = 0.80). The 3D body scanner technique is at least equal to predict successful vaginal breech delivery compared to MRI diagnostics. Further large-scale, prospective studies are needed to verify these results.
Enset Fiber-Reinforced Polylactic Acid-Based Biocomposites for High-Performance Application
Authors: Abraha Kahsay Gebresilassie , Debeli Dereje Kebebew , Ghani Muhammad Usman , Tesfahunegn Awet Arefe , Guo Jiansheng
Published: September 2023

In recent years, there has been growing interest in using plant fibers to reinforce materials in modern manufacturing. This study focuses on the development of a novel biocomposite made from an enset fiber (EF) and polylactic acid (PLA) matrix using compression molding at a hot-pressing temperature of 170 °C and pressure of 7 MPa for 7 min. Before preparing the biocomposites, the fibers were chemically modified with different concentrations of sodium hydroxide (NaOH) and cut into shorter fibers with a 40 mm average length in size. Then, the extent of modifications on the mechanical properties, dynamic mechanical behavior, morphology, and water absorption were investigated. The tensile, flexural, and Charpy impact tests were carried out to evaluate the mechanical properties of the samples as per ASTM standards. Moreover, dynamic mechanical analysis (DMA) and the water absorbency of the biocomposites were investigated, and the results were graphically shown and explained. The results indicate that the biocomposite treated with 5% NaOH exhibited significant improvements in tensile strength, flexural strength, and impact strength compared to the untreated composite. The tensile modulus and flexural modulus of 5% NaOH-modified enset fiber biocomposite were also enhanced by 55.8% and 70.3% compared to untreated enset fiber biocomposite. The highest tensile strength, flexural strength, and impact strength found for the PLA composite reinforced by EF treated with 5% w/v NaOH solution were 20.16 MPa, 30.21 MPa, and 12.02 kJ/m2, respectively. In general, the modification of natural fibers improves adhesion at the interface and therefore decreases the water absorption and improves the dynamic mechanical properties of biocomposites.
Changes in the Microbiome of Sugarcane (Saccharum spp. Hybrids.) Rhizosphere in Response to Manganese Toxicity
Authors: Li Qiuyue , Cai Qiuliang , Pan Linjuan , Tang Xinlian , Ling Guizhi , Wei Yanyan , Li Xiaofeng , Yang Shu
Published: September 2023

Manganese toxicity has limited sugarcane (Saccharum spp. hybrid.) growth and production in acidic soils in south China. The rhizosphere plays an irreplaceable role in plant adaptation to soil abiotic stress, but the responses of the sugarcane rhizosphere to manganese toxicity are still unknown. We designed pot experiments in Mn-rich acidic soil, collected the sugarcane rhizosphere and bulk soil samples, and then investigated the changes in Mn-related soil parameters and microbiome. The results indicated that the water-soluble and exchangeable manganese concentrations in the sugarcane rhizosphere were significantly lower than that in the bulk soil, which was not associated with soil pH changes. In contrast, the number of bacteria and the activity of peroxidase, sucrase, urease, and laccase in the rhizosphere were significantly higher. The 16S rDNA sequencing results showed that the bacterial diversity and quantity along with the abundance of Proteobacteria in the rhizosphere were significantly higher than in the bulk soil, while the abundance of Acidobacteria was lower than in the bulk soil. The soil laccase activity and the number of bacteria decreased significantly with the increase in the manganese toxicity stress. Finally, the relative abundance of proteins associated with manganese transportation and oxidation was significantly higher in the rhizosphere soil. In summary, the Mn-induced response of the rhizosphere is an important mechanism in sugarcane adaptation to manganese toxicity in acidic soil.
Natural Perylenequinone Compounds as Potent Inhibitors of Schistosoma mansoni Glutathione S-Transferase
Authors: Otarigho Benson , Falade Mofolusho O.
Published: September 2023

The existing treatment strategy for Schistosomiasis centers on praziquantel, a single drug, but its effectiveness is limited due to resistance and lack of preventive benefits. Thus, there is an urgent need for novel antischistosomal agents. Schistosoma glutathione S-transferase (GST) is an essential parasite enzyme, with a high potential for targeted drug discovery. In this study, we conducted a screening of compounds possessing antihelminth properties, focusing on their interaction with the Schistosoma mansoni glutathione S-transferase (SmGST) protein. We demonstrated the unique nature of SmGST in comparison to human GST. Evolutionary analysis indicated its close relationship with other parasitic worms, setting it apart from free-living worms such as C. elegans. Through an assessment of binding pockets and subsequent protein–ligand docking, we identified Scutiaquinone A and Scutiaquinone B, both naturally derived Perylenequinones, as robust binders to SmGST. These compounds have exhibited effectiveness against similar parasites and offer promising potential as antischistosomal agents.
Beyond Weisfeiler–Lehman with Local Ego-Network Encodings
Authors: Alvarez-Gonzalez Nurudin , Kaltenbrunner Andreas , Gómez Vicenç
Published: September 2023

Identifying similar network structures is key to capturing graph isomorphisms and learning representations that exploit structural information encoded in graph data. This work shows that ego networks can produce a structural encoding scheme for arbitrary graphs with greater expressivity than the Weisfeiler–Lehman (1-WL) test. We introduce IGEL, a preprocessing step to produce features that augment node representations by encoding ego networks into sparse vectors that enrich message passing (MP) graph neural networks (GNNs) beyond 1-WL expressivity. We formally describe the relation between IGEL and 1-WL, and characterize its expressive power and limitations. Experiments show that IGEL matches the empirical expressivity of state-of-the-art methods on isomorphism detection while improving performance on nine GNN architectures and six graph machine learning tasks.
A Novel Method for Stimulating Cannabis sativa L. Male Flowers from Female Plants
Authors: Owen Luke C. , Suchoff David H. , Chen Hsuan
Published: September 2023

Female hemp plants are desired in floral hemp operations due to their higher cannabinoid contents. To produce feminized seeds, a critical step of inducing fertile male flowers on female plants is performed. In feminized seed production, freshly mixed STS (silver thiosulfate + sodium thiosulfate) is applied to female plants as an ethylene inhibitor to induce male flowers. However, the short-shelf stability of the STS buffer can cause difficulty in the application and inconsistent results. Alternative methods with improved accessibility and stable buffers will be beneficial for the hemp industry and hemp breeders. A commercially available floriculture product, Chrysal ALESCO®, contains silver nitrate, the same active ingredient as STS but with increased shelf stability. This study compares Chrysal ALESCO® to the traditional STS standard methods for male flower induction on female plants and their pollen quality. The two treatments were applied to six female hemp accessions with three replicates investigated, and the male flower counts and pollen quality were compared. No statistically significant difference was discovered in their male flower counts; the STS-treated plant produced an average of 478.18 male flowers, and the Chrysal ALESCO®-treated plant produced an average of 498.24 male flowers per plant. Fluorescein diacetate (FDA) and acetocarmine stains were used to investigate the pollen quality (non-aborted rate) of two chosen genotypes. FDA-stained pollen of Chrysal ALESCO® showed a significantly higher non-aborted rate than the pollen of traditional STS-treated plants (p < 0.001); however, only a marginally higher non-aborted rate was discovered by acetocarmine staining (p = 0.0892). In summary, Chrysal ALESCO® performed equally to traditional STS treatment at male flower counts and better or equally in pollen quality. With better shelf stability and easy application, ALESCO® can be a viable alternative option for stimulating male flowers on female hemp plants.
Identification and Characterization of a Novel Microalgal Strain from the Antofagasta Coast Tetraselmis marina AC16-MESO (Chlorophyta) for Biotechnological Applications
Authors: Mata Maria Teresa , Cameron Henry , Avalos Vladimir , Riquelme Carlos
Published: September 2023

The wide rocky coastline of the Antofagasta hosts an intertidal ecosystem in which the species that inhabit it are routinely exposed to a wide range of physical and chemical conditions and have therefore evolved to tolerate extremes. In the search for new species of potential biotechnological interest with adaptations to a wide range of environmental conditions, the isolation and characterization of microalgae from these ecosystems is of great interest. Here, a new microalgal strain, Tetraselmis marina AC16-MESO, is described, which was isolated from a biofilm collected on the intertidal rocks of the Antofagasta coast (23°36′57.2″ S, 70°23′33.8″ W). In addition to the morphological characterization, 18S and ITS sequence as well as ITS-2 secondary structure analysis revealed an identity of 99.76% and 100% with the species Tetraselmis marina, respectively. The analyses of the culture characteristics and biochemical content showed similarities with other strains that are frequently used in aquaculture, such as the species Tetraselmis suecica. In addition, it is tolerant of a wide range of salinities, thus allowing its culture in water of varying quality. On the other hand, added to these characteristics, the results of the improvement of the lipid content in stressful situations of salinity observed in this study, together with other antecedents such as the potential in bioremediation already published for this strain by the same research group, present a clear example of its biotechnological plasticity. It is noteworthy that this strain, due to its characteristics, allows easy collection of its biomass by decantation and, therefore, a more cost-efficient harvesting than for other microalgal strains. Therefore, this new strain of Tetraselmis marina, first report of this species in Chile, and its morphologically, molecularly and biochemically description, presents promising characteristics for its use in biotechnology and as feed for aquaculture.
Fungal Elicitation Enhances Vincristine and Vinblastine Yield in the Embryogenic Tissues of Catharanthus roseus
Authors: Tonk Dipti , Mujib Abdul , Maqsood Mehpara , Khusrau Mir , Alsughayyir Ali , Dewir Yaser Hassan
Published: September 2023

Fungal elicitation could improve the secondary metabolite contents of in vitro cultures. Herein, we report the effect of Fusarium oxysporum on vinblastine and vincristine alkaloid yields in Catharanthus roseus embryos. The study revealed increased yields of vinblastine and vincristine in Catharanthus tissues. Different concentrations, i.e., 0.05% (T1), 0.15% (T2), 0.25% (T3), and 0.35% (T4), of an F. oxysporum extract were applied to a solid MS medium in addition to a control (T0). Embryogenic calli were formed from the hypocotyl explants of germinating seedlings, and the tissues were exposed to Fusarium extract elicitation. The administration of the F. oxysporum extract improved the growth of the callus biomass, which later differentiated into embryos, and the maximum induction of somatic embryos was noted T2 concentration (102.69/callus mass). A biochemical analysis revealed extra accumulations of sugar, protein, and proline in the fungus-elicitated cultivating tissues. The somatic embryos germinated into plantlets on full-strength MS medium supplemented with 2.24 µM of BA. The germination rate of the embryos and the shoot and root lengths of the embryos were high at low doses of the Fusarium treatment. The yields of vinblastine and vincristine were measured in different treated tissues via high-pressure thin-layer chromatography (HPTLC). The yield of vinblastine was high in mature (45-day old) embryos (1.229 µg g−1 dry weight), which were further enriched (1.267 µg g−1 dry weight) via the F. oxysporum-elicitated treatment, especially at the T2 concentration. Compared to vinblastine, the vincristine content was low, with a maximum of 0.307 µg g−1 dry weight following the addition of the F. oxysporum treatment. The highest and increased yields of vinblastine and vincristine, 7.88 and 15.50%, were noted in F. oxysporum-amended tissues. The maturated and germinating somatic embryos had high levels of SOD activity, and upon the addition of the fungal extracts, the enzyme’s activity was further elevated, indicating that the tissues experienced cellular stress which yielded increased levels of vinblastine and vincristine following the T2/T1 treatments. The improvement in the yields of these alkaloids could augment cancer healthcare treatments, making them easy, accessible, and inexpensive.
Quantitative Characterization of Shale Pores and Microfractures Based on NMR T2 Analysis: A Case Study of the Lower Silurian Longmaxi Formation in Southeast Sichuan Basin, China
Authors: Li Chuxiong , Shen Baojian , Lu Longfei , Pan Anyang , Li Zhiming , Zhu Qingmin , Sun Zhongliang
Published: September 2023

In order to quantitatively characterize shale pores and microfractures, twelve marine shale samples from the Longmaxi Formation in the southeastern Sichuan Basin were selected and their NMR T2 spectra were analyzed under the conditions of full brine saturation, cyclic centrifugal treatment and cyclic heat treatment. Then, movable, capillary bound and unrecoverable fluid of shale samples were distinguished and the NMR porosity and full-scale PSD were calculated. Based on NMR spectral peak identification, the relative content of pores and microfractures was determined and their influence factors were analyzed. The results show that the PSD of shale samples is bimodal, with pores distributed in the range of 1 nm to 200 nm and microfractures distributed in the range of 200 nm to 5000 nm, with relative contents in the ranges of 3.44–6.79% and 0.22–1.43%, respectively. Nanoscale organic pores are the dominant type of pores, while inorganic pores and microfractures contribute much less to the shale reservoir space than organic pores. The T2 cutoff values range from 0.55 ms to 6.73 ms, and the surface relaxivities range from 0.0032 µm/ms to 0.0391 µm/ms. Their strong correlation with TOC suggests that organic matter is the main factor controlling the pore type and structure. In addition, the main difference between NMR porosity and He porosity is that gas logging porosity is used to detect connected pores, while NMR porosity also includes closed pores and microfractures. Combined with NMR and high-temperature pressure displacement experimental facilities, this will be a further step towards studying the pore structure of shale under simulated formation conditions.
Reliability Evaluation of DC/DC Converter in Direct Current Collection System of Wind Farm Considering the Influence of Control Strategy
Authors: Liu Junyi , Fan Yanfang , Hou Junjie , Bai Xueyan
Published: September 2023

The DC collection system of wind farms can effectively solve the problems of harmonic resonance and reactive power transmission in large-scale wind power AC collection systems, and has broad development prospects. The DC/DC converter is critical equipment in the wind farm DC collection system, and its reliability is related to the entire collection system’s safe and stable operation. The reliability of DC/DC converters is affected by factors such as system operating conditions and control strategies. Based on this, a reliability evaluation model for boost full-bridge isolated (BFBIC) DC/DC converters is proposed from the device level to the submodule level and then to the equipment level, incorporating operating conditions and control strategies into reliability analysis. Firstly, in device-level reliability modeling, the impact of DC/DC converter operating conditions and control strategies on insulated gate bipolar transistor (IGBT) module losses and junction temperature fluctuations are considered. Secondly, fault tree analysis (FTA) is used to establish the reliability model of the BFBIC submodule and DC/DC converter. In the end, we verify the effectiveness of the proposed model through a numerical example, and provide solid data support for analyzing the reliability of the wind farm DC collection system.
Experimental Study of Wheel-to-Rail Interaction Using Acceleration Sensors for Continuous Rail Transport Comfort Evaluation
Authors: Mihăilescu Ioana , Popa Gabriel , Tudor Emil , Vasile Ionuț , Gheți Marius Alin
Published: September 2023

Rail transport comfort is ensured by predictive maintenance and continuous supervision of rail quality. Besides the specialized equipment, the authors are proposing a simple system that can be implemented on operational wagons while in service, aiming to detect irregularities in the rail and report them using the train’s online communication lines. The sensor itself is an acceleration sensor connected to an electronic microcontroller able to filter the inrush acceleration and send it to the diagnosis system of the wagon. This paper presents a study of real data recorded of the transversal and vertical vibrations of a standard tank wagon, measured on 2 axles and the car body, followed by the interpretation of the recorded data.
Prediction of the Vanadium Content of Molten Iron in a Blast Furnace and the Optimization of Vanadium Extraction
Authors: Li Hongwei , Li Xin , Liu Xiaojie , Bu Xiangping , Chen Shujun , Lyu Qing , Wang Kunming
Published: September 2023

The vanadium content of molten iron is an important economic indicator for a vanadium–titanium magnetite smelting blast furnace, and it is of great importance in blast furnace production to be able to accurately predict it and optimize the operation of vanadium extraction. Based on the historical data of a commercial blast furnace, the clean data were obtained by processing the missing data and outlier data for data mining analysis and model development. A combined wavelet-TCN model was used to predict the vanadium content of molten iron. The average Hurst index after wavelet transform was calculated to reduce the complexity of the wavelet transform layer selection and the model computation time. The results show that compared to single models, such as LSTM, LSTM with attention, and TCN, the combined model based on wavelet-TCN (a = 5) had an improvement of about 11~17% in R2, and the prediction accuracy was high and stable, which met the practical requirements of blast furnace production. The factors affecting the vanadium content of molten iron were analyzed, and the measures to increase the vanadium content were summarized. A blast furnace should avoid increasing the titanium dioxide load, increase the vanadium load appropriately, and keep the relevant operating parameters within the appropriate range in order to achieve the optimization of vanadium extraction from molten iron.
Genomic Instability and Cytotoxicity Evaluation of Two Communities Exposed to Pesticides in the Mexicali Valley by the L-CBMN Assay
Authors: Ruiz-Ruiz Balam , Torres-Bugarin Olivia , Zúñiga-Violante Erika , Casillas-Figueroa Francisco , Luna-Vázquez-Gómez Roberto , Campos Gallegos Verónica , Ruiz-Arellano Ana Erika , Arellano-García María Evarista
Published: September 2023

The continuous biomonitoring of a population directly or indirectly exposed to pesticides could be an additional tool for decision makers to improve their health conditions. In this work, we performed biomonitoring on two groups of people from the Mexicali Valley who were continuously exposed to pesticides using the cytokinesis-block micronucleus cytome assay (L-CBMN) to evaluate cytotoxic and genotoxic damage in human peripheral blood lymphocytes. The study groups comprised 14 indigenous Cucapah with non-vegetarian habits (NV group) from Ejido el Mayor (32.12594°, −115.27265°) and 21 lacto-ovo vegetarian (LOV) persons from the Seventh-day Adventist Church of Ejido Vicente Guerrero (32.3961°, −115.14023°). The L-CBMN assay determines the nuclear division index (NDI), apoptosis, necrosis, micronuclei (MNs), nuclear buds (NBUDs), and nucleoplasmic bridges (NPBs). Our results show that, regardless of diet or daily habits, both the studied groups presented with cytogenotoxic damage compared with non-exposed pesticide individuals, without modifications to the nuclear division index. In the rest of the evaluated biomarkers, the NV group exhibited greater cytotoxic and genotoxic damage than the LOV group. Nevertheless, individuals practicing a lacto-ovo vegetarian diet (LOV) showed lower damage than those with non-vegetarian habits (NV), suggesting a better antioxidant response that helps decrease the genotoxic damage due to the enhanced intake of folates and antioxidants from a plant-based diet.
Modes of Vibration in Basketball Rims and Backboards and the Energy Rebound Testing Device
Authors: Winarski Daniel , Nygren Kip P. , Winarski Tyson
Published: September 2023

Six mode shapes, including bending and torsion, were documented for five different basketball rims and backboards at the United States Military Academy, West Point, New York, NY, USA. The frequency and damping ratio of each mode shape were also determined. The empirical process began with the time-domain excitation and response of each rim-backboard system. The impulse of excitation came from an impact hammer separately applied sequentially to each node. The sinusoidal response was gathered from an accelerometer at a fixed location (node 1). Each time-domain excitation response was then converted to a frequency-domain Bode plot for each node by a Brüel & Kjær 2034 Signal Analyzer, giving transfer functions of output/input versus frequency. Structural Measurements System (SMS) StarStruc software was used to fit mode shapes to the Bode plots. Each of the six mode shapes was fitted to the Bode plots of each node at a specific modal frequency. Each of the six mode shapes was a function of the locations of the nodes, and the Bode plots gathered at each node. The first and second modes were critical for showing that the Energy Rebound Testing Device statistically correlated with the energy transferred to the rim and backboard. A known perturbation mass was selectively attached to the rim to help isolate the dynamic masses and spring rates for the rim and backboard and to ascertain that the kinetic energy transferred to the rim had a 95.67% inverse correlation with rim stiffness.
Interview with Ian Shirley
Authors: Haigh David
Published: September 2023

This interview with Ian Shirley, carried out in 2013, is the third in a series of interviews by David Haigh with practitioners who have made significant contributions to the field of community development in Aotearoa New Zealand.
Notes from the field: A collective community food initiative in suburban Whangārei
Authors: Stansfield John
Published: September 2023

Bringing a community development lens to place often begins with a study of the community, utilising demographics, observation, and a review of literature and local communications. In Aotearoa New Zealand, Stats NZ produces very useful summaries from each census. These are titled Place Summaries and give detailed demographic data about relatively small areas, and are a great resource to community development practitioners. Unless otherwise cited, all statistics in this paper are derived from the Raumanga Place Summary from the 2006, 2013 and 2018 census data. Raumanga, the focus of this community food initiative, sits astride State Highway 1 on the southern edge of Whangārei, although the outskirts of Otaika are growing, making Raumanga a more central suburb. A 1986 archaeological study (Rickard, 1986) found the area rich in sites of preEuropean occupation and cultivation. Raumanga means ‘many branches’ and refers to the dozens of streams and springs in this fertile valley. Lower Raumanga was once an important swamp and river basin famous amongst local Māori as a food basket and place of recreation much favoured by children (Vallance, 1956).
Dynamics and Control of Flexible Satellite Using Reaction Sphere Actuators
Authors: Tayebi Javad , Chen Ti , Wang Hao
Published: September 2023

This paper presents a disturbance observer-based linear quadratic Gaussian (LQG) control strategy to stabilize the flexible spacecraft considering the vibration suppression of flexible appendages using an orthogonal cluster of magnetically suspended reaction sphere actuators. The nonlinear dynamic equation of a flexible satellite is given and then linearized using the Jacobian method to get a linear state-space model. The dynamic equation of the reaction sphere actuators is derived by considering 2 virtual gimbals. A new steering law is designed to produce the tilt angle commands of orthogonal reaction sphere actuators. The proposed disturbance observer-based LQG considers process disturbances and measurement noises, and performs a trade-off search between control efforts and regulation performance. Numerical simulations are performed to evaluate the proposed strategies for an attitude stabilization scenario, and the results illustrate that the disturbances are effectively mitigated.
Salinity Inversion of Flat Sea Surface Based on Deep Neural Network
Authors: Wen Zhongkai , Shu WeiPing , Sha Jin , Zhang Huan , Liu Shubo , Zhang Liqiang , Liu Lei , Wang Tao , Zhang Qingjun , Li Shuang
Published: September 2023

The distribution and change of sea surface salinity (SSS) have an important influence on the sea dynamic environment, marine ecological environment, global water cycle, and global climate change. Satellite remote sensing is the only practical way to continuously observe SSS over a wide area and for a long period of time. The salinity retrieval model of flat sea surface, which primarily includes empirical model and iterative model, is the key to retrieving satellite SSS products. The empirical models have high computational efficiency but low inversion accuracy, while the iterative models have high inversion accuracy but low computational efficiency. In order to reconcile the contradiction between the computational efficiency and inversion accuracy of existing models, this paper proposes a universal deep neural network (DNN) model architecture and corresponding training scheme, and provides 3 DNN models with extremely high computational efficiency and high inversion accuracy. The inversion error range, the root mean square error (RMSE), and the mean absolute error (MAE) of the DNN models on 311,121 sets of data have decreased by more than 40 times, 150 times, and 150 times, respectively, compared to the empirical model. The computational efficiency of the DNN models on 420,903 sets of data has improved by more than 100,000 times compared to the iterative model. Therefore, the algorithm developed in this paper can effectively solve the contradiction between the computational efficiency and inversion accuracy of existing models, and provide a theoretical support for high-precision and high-efficiency salinity inversion research.
Innovative dDigital Marketing Strategies to Increase Demand in a Hotel Company
Authors: Hernandez-Padilla Jorge Daniel , Donayre-Gallo Andre , Cordova-Buiza Franklin , Auccahuasi Wilver
Published: September 2023

In recent years, there are still companies which have not opted yet to diversify, boost or develop the promotion of their range of services in the hotel industry, focusing the vitality of their sales in seasons of high tourist flow, but their level of demand is declining in regular periods. This is due to among other factors, to changes in the behavior of today's customers, who place their trust in verified and licensed channels which are part of digital marketing. Therefore, digital marketing has gained great relevance in business, which is originated by the technological advance of media, positioning digital marketing as a strategic and a necessary tool to publicize a service and significantly increase customer demand. In this case, the objective of this research is to determine the digital marketing strategies to increase demand in a hotel company in a country with an emerging economy. The methodology used in the research is a mixed type, because the information was collected through a qualitative and quantitative approach, the sample is non-probabilistic and intentional, a questionnaire was applied to customers and also interviews to administrative staff. The data was processed through Ms Excel software and presented in frequency tables and figures for interpretation. The results show the great importance of the use of digital marketing strategies such as Search Engine Optimization (SEO), Social Media Marketing (SMM) and Pay per Click, which present applications with great flexibility to acquire services, a great scope of visibility in search engines and all web content updates. Finally, it is concluded that the digital marketing strategies identified were decisive in increasing demand in the hotel industry.
Hubungan Antara Task Aversiveness dengan Prokrastinasi Akademik pada Mahasiswa di Universitas X
Authors: Nastasia Krisnova , Mujidin
Published: September 2023

After completing high school education, many decide to choose to continue on to college. When you become a student, there will definitely be lots of assignments, obligations and challenges faced in order to complete your studies to completion, so it's not surprising that many students experience task aversiveness. Task aversiveness greatly affects the academic procrastination of students. This study aims to determine the relationship between task aversiveness and academic procrastination final assignments on students in the tourism department of hospitally management study program, faculty of tourism and hospitally class of 2017-2018 Univeritas Negeri Padang. This study used a quantitative approach with a correlation method. The measuring instrument used in this study was task aversiveness scale and academic procrastination scale. The population in this study was student at tourism department of hospitally management study program, the sampel was 112 students of the tourism department of hospitally management study program, faculty of tourism and hospitally class of 2017-2018 Universitas Negeri Padang. this study used probability sampling method with simple random sampling technique. Data analysis was carried out used the rho (ρ) correlation thecniques. The results showed that the correlation coefficient of rho (ρ) is 0,410 with a (ρ) is 0,000. This showed that there was very significant positive relationship between task aversiveness and academic procrastination students in the tourism department of hospitally management study program, faculty of tourism and hospitally class of 2017-2018 Universitas Negeri Padang. It means that the higher the task aversiveness, the higher the academic procrastination and the lower the task aversiveness, the lower the academic procrastination. The effective contribution of the task aversiveness variable to the academic procrastination variable is 17%.
Parasitas em pescados: Uma revisão sobre casos e ocorrências
Authors: Carneiro da Costa Fládia , Maciel Dias de Moraes Georgia , Alves Teixeira Sá Daniele Maria , Pinto Farias Mirla Dayanny
Published: September 2023

Parasitas em pescados: Uma revisão sobre casos e ocorrências
Quantificação do resto ingesta durante almoço servido em restaurante acadêmico na cidade de Sobral-CE
Authors: Farias de Oliveira Mirian , Mazza Cruz de Oliveira Amanda , Elmiro Timbó Andrade Francisca Joyce , Maciel Dias de Moraes Georgia
Published: September 2023

Quantificação do resto ingesta durante almoço servido em restaurante acadêmico na cidade de Sobral-CE
Elaboração de Fichas Técnicas de Preparação (FTP) de bolos em panificadora de Cariré-CE
Authors: Aguiar de Carvalho Antônia Regilene , Elmiro Timbó Andrade Francisca Joyce , Lima de Oliveira Natália , Mazza Cruz de Oliveira Amanda
Published: September 2023

Elaboração de Fichas Técnicas de Preparação (FTP) de bolos em panificadora de Cariré-CE
“Ello habla antes, en otra parte”: para una crítica de las evidencias del sentido a partir del caso Carlos Matus
Authors: Viedma Celeste
Published: September 2023

El presente artículo se propone producir, a partir de un caso, una reflexión teórica en torno a los modos en que trabajamos con discursos en cienciassociales. En particular, procura presentar elementos pertenecientes a la escuela francesa de análisis del discurso: los aportes de Michel Pêcheux sobre la lectura althusseriana del psicoanálisis y el trabajo teórico de Foucault, en los que cobrarán especial relevancia el concepto de interdiscurso, así como la noción de heterogeneidad constitutiva del discurso elaborada por Jacqueline Authier-Revuz. Se presenta la hipótesis de que esta teoría es sumamente fructífera para horadar dos evidencias que operan como obstáculos epistemológicos al momento de producir conocimiento en nuestras disciplinas: el“autor”, entendido como fuente de sentido del discurso, y el llamado “contexto”, en términos de las coordenadas espacio-temporales de su formulación.Se procura analizar los modos en que operan ambas evidencias en el estudio un caso particular: las lecturas contemporáneas acerca de los desarrollos del economista chileno Carlos Matus. Para ello, se conforma un corpus preliminar en el que se demuestran regularidades que difícilmente puedan ser advertidas desde una perspectiva que reproduzca las dos evidencias mencionadas.
El enfoque weberiano de la relación y la separación entre la Iglesia y el Estado
Authors: Lambruschini Patricia
Published: September 2023

En el marco de la lucha reciente por el derecho al aborto en Argentina, en un sector del movimiento de mujeres surgió con vigor la consigna de la “separación de la Iglesia y el Estado”. Esta reivindicación liberal elemental, formulada en el siglo XXI, estimula la reflexión sobre los alcances de la secularización en las sociedades modernas y sobre las relaciones entre las esferas política y religiosa.

A raíz de esto, el presente artículo recupera el legado teórico de Max Weber, que no solo hizo del proceso universal de racionalización su problema de investigación privilegiado, sino que abordó con detenimiento las categorías de Estado e Iglesia y el vínculo recíproco que estas instituciones entablan históricamente. En ese sentido, el artículo se propone: 1) examinar el modo en que Weber construye sus definiciones de estos dos conceptos sociológicos y puntualiza sus afinidades; 2) identificar las relaciones típico-ideales más importantes que advierte entre ambas instituciones en el mundo pre-moderno; y 3) caracterizar la separación de la Iglesia y el Estado en la modernidad y las limitaciones que encuentra en este terreno.
Andrea Bolcatto y Gastón Souroujon. Los nuevos rostros de la derecha en América Latina
Authors: Zamarguilea Rafael
Published: September 2023

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Precondiciones sociales y diseminación de la afección alrededor de la detención de Milagro Sala y la erradicación de la Tupac Amaru
Authors: Gaona Melina
Published: September 2023

Este artículo transita críticamente los sustentos de sentidos sociales que rodean el caso de la detención de la dirigente Milagro Sala y, con ello, el desmantelamiento de la organización Tupac Amaru, así como el consenso social generalizado de apoyo al Gobierno de Gerardo Morales en Jujuy. Construye una definición de las afecciones públicas a partir del modo en el que la figura de la dirigente social fue densificando en sí toda una serie de malestares y “daños” del plano público local. Esto permite analizar las precondiciones de sentido que depararon en la escalada hacia un nuevo gobierno provincial basado en la aparente necesidad de una “refundación convivencial” democrática, en especial a partir de la erradicación de los antagonismos urbanos visibles. Se indaga, a su vez, en torno a las distintas vías que materializaron la imagen de Sala como un mal social omnipotente y omnipresente, así como una envilecedora directa de los sectores populares locales. El trabajo está basado en una investigación cualitativa que retoma insumos discursivos generados en una etnografía clásica y multi-situada.
Transformaciones y continuidades agrarias en cinturones verdes. El caso de Guaymallén como la “zona del verdeo” de Mendoza, Argentina
Authors: Mathey Daniela , Pereyra Mariana
Published: September 2023

Este trabajo aborda los principales procesos que explican la configuración de un territorio agrícola ubicado en el departamento Guaymallén, principal zona proveedora de hortalizas en fresco del Área Metropolitana de Mendoza, Argentina. El objetivo es analizar los principales atributos y percepciones de productores hortícolas sobre su continuidad en la actividad y transformaciones del territorio, con la finalidad de aportar elementos interpretativos sobre los procesos a los que estos intersticios agrícolas periurbanos y sus actores están sometidos. En base a una encuesta realizada en 2019, revisión documental y fuentes secundarias, los resultados muestran la relativa permanencia del territorio con perfil hortícola a partir de procesos de transformación agroalimentaria –crisis y “reconversión vitivinícola”– y demográfico-culturales, que implican creciente peso de familias y trabajadores de origen boliviano. Las amenazas percibidas por los productores responden a factores de índole económico –renta de la tierra– social –inseguridad– y productivo –contaminación, provisión de agua– atribuidos a la expansión urbana dispersa; económico-financieros –baja rentabilidad–; y demográficos, vinculados con la edad avanzada de los productores y la falta de continuidad generacional. Mientras tanto, la reciente aprobación de la zonificación municipal, que define parte del territorio bajo estudio como “reserva agroalimentaria”, plantea nuevos interrogantes acerca de la futura dinámica territorial.
El Partido Liberal de Paraguay: reorganización, crisis interna y adaptación en tiempos democráticos (1989-2021)
Authors: Pérez Talia Marcos
Published: September 2023

El Partido Liberal de Paraguay es la organización partidista más antigua del país y de las más antiguas de la región. Durante las dictaduras del siglo XX, el partido fue perseguido, proscripto e incentivado a múltiples divisiones. Una vez caída la dictadura del general Stroessner (1989) e iniciada la transición democrática, el liberalismo –entonces dividido en cinco partidos– se tuvo que reorganizar rápidamente para competir por los cargos nacionales y subnacionales. Pese a las dudas y la incertidumbre respecto de sus chances de volverse competitivo, los resultados electorales pronto mostraron que la organización partidaria supo adaptarse a los nuevos desafíos democráticos.

Este trabajo explora, en clave electoral, el proceso de reorganización y adaptación del liberalismo paraguayo entre 1989 y 2021. Para ello, se divide la historia partidaria en tres etapas: (i) la reorganización partidaria (1989-1998); (ii) lucha de facciones, alianzas y gobierno (1999-2013); y (iii) vuelta a la oposición y estabilidad partidaria (2013-2021). Se muestra cómo la inestabilidad interna y la falta de cohesión fueron capaces de generar crisis externas (lo que fue una de las causas de la caída de Lugo), mientras que, en su interior, sirve como fuente de vitalidad a partir de su amplia gama de opciones liberales posibles.
Gabriela Benza y Gabriel Kessler. La ¿nueva? estructura social de América Latina. Cambios y persistencias después de la ola de gobiernos progresistas
Authors: Kaplan Lucía
Published: September 2023

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Los discursos de Kirchner y su vínculo con el republicanismo
Authors: Ríspolo Florencia
Published: September 2023

Los últimos veinte años de la política argentina estuvieron marcados fundamentalmente por dos conceptos, considerados dicotómicos: populismo y republicanismo. De esta forma, las gestiones o presidentes identificados como populistas se ubicaban en el polo opuesto a la protección de las instituciones. Lo mismo sucedía al revés: quienes eran definidos como republicanos eran calificados como enemigos de lo popular. Los discursos de Néstor Kirchner han sido asociados largamente a la noción de populismo, motivo por el cual cualquier nexo con los conceptos republicanos era impensado o poco probable.

Sin embargo, en el presente trabajo buscamos interrogarnos acerca del diálogo y continuidad que la primera gestión kirchnerista mantiene respecto de dos conceptos característicos de la tradición republicana, como lo son el bien común y los valores morales/moralidad. Por un lado, nos interesa conocer los vínculos que Kirchner establece con estos conceptos; por otro, observar cómo dialoga con los usos e interpretaciones que otros líderes políticos han hecho de estas nociones.
La política exterior y la política internacional subnacional: articulación y experiencia en el caso argentino
Authors: Calvento Mariana , Zuccarino Maximiliano
Published: September 2023

El presente trabajo establece como objetivo analizar la influencia que la política exterior tiene sobre la participación internacional de los actores subnacionales. En primer lugar, se desarrolla brevemente la articulación conceptual de la política exterior nacional y la participación subnacional, con el objetivo de explicitar la vinculación entre ambas. Asimismo, se propone analizar hasta qué punto los actores subnacionales tienen la capacidad de influir en el proceso de formulación y ejecución de la política exterior del Estado nacional del que son parte. En segundo lugar, se indaga sobre la materialización de la articulación en el caso argentino, y se señalan algunos de los procesos internos y externos que influyeron en el accionar internacional subnacional, con el énfasis puesto en la política exterior de fines del siglo XX y principios del XXI. Finalmente, se establecen las reflexiones sobre el tema anclado en el caso argentino.
La política asistencial en la etapa macrista: una caracterización de las pensiones no contributivas asistenciales
Authors: Mallardi Manuel , Fernández Emiliano
Published: September 2023

El artículo se plantea el objetivo de caracterizar la política hacia las pensiones asistenciales no contributivas durante el período macrista, con especial énfasis puesto en las pensiones por invalidez laboral. Argumentamos que aquella política, a pesar de los intentos del gobierno nacional, sostuvo el nivel masivo de cobertura heredado de la etapa kirchnerista, y que, a cambio, sí sufrió alteraciones en la estructura y lógica administrativa. También sostenemos que, a pesar de estas alternaciones, continúo su reproducción, lo que caracterizamos como un modo de gestión difuso de esta política. En términos metodológicos, el trabajo descansa en fuentes escritas, principalmente leyes, decretos e informes oficiales, como así también en estadísticas puestas a disposición por distintas instancias gubernamentales.
La dimensión socio-ambiental de los territorios a partir de las geoculturas latinoamericanas y la geografía crítica
Authors: Tomás Claudio Luis
Published: September 2023

El trabajo que desarrollamos tiene como propósito realizar una reflexión mediante la articulación de algunos conceptos y autores que, desde la geo-cultura latinoamericana y la geografía crítica, pueden contribuir a la comprensión, enriquecida y compleja, de los conflictos socio-ambientales. A su vez, al problematizar, nos orientamos a contrastar concepciones desde el pensamiento situado y aplicarlas al análisis de estos conflictos,  lo cual incluye supuestos, valores y prácticas que, a partir del desarrollo de la agricultura industrial, fueron generando más inquietudes sin resolver que definiciones asertivas.
Entre protagonismos, demandas y renovación. Análisis de las juventudes militantes de organizaciones político-partidarias en Resistencia, Chaco (2012-2017)
Authors: Campusano Marina , Favieri Francisco Nicolás
Published: September 2023

Desde la segunda mitad de los años dos mil, las juventudes fueron interpeladas por las organizaciones político-partidarias en un contexto que significó renovadas expresiones de militancia. Este proceso de revitalización en clave juvenil fue estudiado a nivel nacional con el énfasis puesto en los sentidos y valores asociados a la juventud y las formas de construcción sobre el compromiso militante. Desde un enfoque cualitativo, en este trabajo recuperamos las experiencias de jóvenes militantes de cuatro organizaciones político-partidarias de la ciudad de Resistencia, Chaco, con el objetivo de analizar sus formas de participación y demandas, a fin de identificar los procesos de inclusión y de posibles transformaciones hacia el interior de las agrupaciones.

Destacamos como principales hallazgos, por un lado, que el contexto de movilización juvenil tiene limitadas influencias en el caso de las organizaciones analizadas. Por otro lado, observamos que los procesos de revitalización que las juventudes militantes pueden movilizar dependen fuertemente de la relación entre la tradición de la organización en cuanto a su funcionamiento local-nacional y el papel de las élites del partido. Se sustenta, así, la imagen de una juventud que disputa posiciones y transformaciones internas en tanto demandas generacionales sobre las organizaciones más conservadoras frente a otras donde se ubican en espacios de mayor jerarquía.
¿Capitalismo de Estado o pragmatismo de Estado? Los casos de Siderar-Techint, YPF y AySA durante los gobiernos kirchneristas en Argentina
Authors: Chaia De Bellis Jonás
Published: September 2023

Este artículo sostiene que los diferentes formatos de gestión de empresas públicas no se corresponden con diferentes épocas sino que pueden coexistir, no solo en un mismo período histórico, sino también bajo un mismo gobierno. En efecto, el Estado puede ser propietario total, accionista mayoritario y accionista minoritario en diferentes empresas durante un mismo gobierno, y contar en cada caso con más o menos recursos para intervenir en el mercado y para excluir a los actores privados de los procesos decisionales empresariales. Analizaremos tres casos de gestión estatal durante los gobiernos kirchneristas en Argentina: AySA en 2006 (Estado como propietario total), YPF en 2012 (Estado como accionista mayoritario) y Siderar en 2011 (Estado como accionista minoritario). Seguiremos la hipótesis de que cada uno de estos formatos de gestión fue seleccionado por el gobierno a partir de los objetivos coyunturales que se había fijado: congelamiento de tarifas en el caso de AySA, freno a la salida de divisas en el caso de YPF y captura de rentas en el caso de Siderar. El análisis será realizado desde un enfoque de economía política comparada y según el método de rastreo de procesos para la construcción de teorías.