bluuebunny/crossref_metadata_2025 huggingface dataset:
Report on Grouped Peer Review of Scholarly Journals in Mathematics and Science
Authors: Afolayan Anthony , Anguelov Roumen , Cowan Don , Labuschagne Maryke , Sacks Natasha , Zegeye Edilegnaw Wale
Published: November 2021

The peer review report entitled Report on Grouped Peer Review of Scholarly Journals in Mathematics and Science is the 12th in a series of discipline-grouped evaluations of South African scholarly journals. This is part of a scholarly assurance process initiated by the Academy of Science of South Africa (ASSAf). The process is centered on multi-perspective, discipline-based evaluation panels appointed by the Academy Council on the recommendation of the Academy’s Committee on Scholarly Publishing in South Africa (CSPiSA). This detailed report presents the peer review panel’s consolidated consensus reports on each journal and provides the panel’s recommendations in respect of DHET accreditation, inclusion on the SciELO SA platform and suggestions for improvement in general. The main purpose of the ASSAf review process for journals is to improve the scholarly publication in the country that is consonant with traditional scholarly practices.
Simulation of Nonlinear Magnetic Systems by the Finite Element Method Using BLR-Factorization
Authors:   Platov South-Russian State Polytechnic University (NPI), Khoroshev Artem
Published: November 2021

The possibility of practical application of BLR-factorization (low-rank approximation of the matrix of un-knowns of a system of linear equations) for finite element modeling of the electromagnetic field topology of nonlinear magnetic systems is considered. A method for estimating the accuracy of the computed solution of the SLAE and the nature of the influence of the given accuracy of the low-rank approximation of the matrix of un-knowns on the upper limit of the relative forward error of the computed solution of the SLAE are shown. Using a model problem as an example, the dependence of the accuracy of calculating the integral characteristics of an electromechanical apparatus on the tolerance of the low-rank approximation of the matrix of unknowns is shown, as well as its effect on the convergence of the process of solving a nonlinear numerical problem. A quantitative assessment of the reduction in the computational complexity of the process of solving a numerical problem and the required amount of computer memory for solving the SLAE is carried out. The applicability of BLR-factorization for finite element modeling of the topology of the electromagnetic field without the use of numerical methods of the Krylov subspace is estimated.
Study of the Influence of the Width and the Pair Shift Of Permanent Magnets on the Torque of an Electric Motor
Authors:   Platov South-Russian State Polytechnic University (NPI), Pakhomin Sergey , Kan Sergey ,   Platov South-Russian State Polytechnic University (NPI)
Published: November 2021

The article discusses ways to reduce the torque ripple in a permanent magnet motor. With the use of the FEMM program, computational studies were carried out to determine the effect of the width of the magnets and the magnitude of their pairwise angular displacement on ripple in the nominal mode and no-load. The studies were carried out for a sixteen-pole motor with permanent magnets placed on the rotor surface, with a distribut-ed winding on the stator and the number of slots per pole and phase equal to 1. The calculations were per-formed for a rotor with a magnet width in the range of 0.6 - 0.85 p.u. rated torque. It is noted that in the idle mode, the change in the width of the magnets in the specified range and a decrease in the angle of their pair-wise shift makes it possible to reduce the pulsations to a level of 1.3 % of the nominal torque. In the nominal mode, the variation in the width of the magnets and the pairwise angular displacement allows the torque ripple to be reduced to 4.7 %.
Energy-Saving Control Algorithms of Electrically Driven Aggregates of Gas Transportation Technological Installations
Authors:   TSN-electro LLC, Kryukov Oleg , Gulyayev Igor ,   National Research Ogarev Mordovia State University, Teplukhov Dmitriy ,   National Research Ogarev Mordovia State University
Published: November 2021

Optimal principles of energy efficient management of natural gas transport using electric drive units along gas pipelines based on the existing regulatory and technical documentation are considered. The methodologi-cal basis of the control principles is the apparatus of the theory of experiment planning and invariant systems using strategies of low-population technologies and intelligent electric drive systems. The scheme and modern technical means of frequency-controlled electric drives and algorithms for optimal control of the main techno-logical units of compressor stations of the main gas transportation are presented, which ensure the stabiliza-tion of the parameters of the pumped gas at the optimal level.
Resource and Lifecycle Management of Submersible Electrical Equipment for Oil Production Based on Technical Diagnostics and the Dynamics of Changes in Its Current State
Authors:   SamaraNIPIneft, Romanov Vladimir , Goldstein Valery ,   Samara State Technical University, Senko Vladislav ,   Samara State Technical University
Published: November 2021

In optimizing and managing the life cycles of submersible electrical equipment (SEE) for oil production, an integrated approach to the organization of maintenance and re-pairs (MRO) is advisable based on the devel-opment of a more advanced strategy for carrying out repair cycles. It is stated that the maintenance and repair strategies adopted by the oil industry do not fully ensure operational efficiency, which leads to an increase in premature equipment failures, a reduction in turnaround times and, as a result, losses for oil companies. The advantages and disadvantages of approaches to organizing the operation of SEE on the operating time and the actual state in the planning, implementation of maintenance and re-pair, as well as the feasibility of their com-plex application are evaluated. It is proposed to use statistical models to make an informed decision on deter-mining the composition and period of MRO, forecasting the boundary states of sets in general and specific SEE electrical installa-tions. At a given operating time, it is possible to determine the basic laws of the appearance of defects and the mean time between failures (MTBF) of the elements, as well as the fleet of equipment of oil-producing enterprises as a whole. The results obtained are the rationale for a set of recommendations to im-prove operational efficiency and optimize life cycle manage-ment of submersible electrical equipment for oil production.
The Gradient Method of Constructing an Image of Mapping for the Classification Problem of the Object Operation Modes
Authors:   ", Dementiy Yuri ,   Relematika",   LLC, Nikolaev Kirill ,   "Relematika" LLC
Published: November 2021

The paper describes the solution of the problem of discrimination (classification) of object operation modes by construction of areas corresponding to each of the considered modes types, with subsequent verifica-tion of falling points, defined by the observed states of the object, in one of the areas. As a source of infor-mation about an object, its simulation model and acceptable ranges of object parameters are used. The map-ping under study combines the simulation model function and the gauging function. All this makes it possible to turn the task of training the classifier to the task of finding the image of the mapping. The proposed approach to the solution of the problem is based on the maximization of the informativity of points, approximating the boundary of the area. The area of the required domain and the absolute deviation of the lengths of the edges forming the boundary of the domain from their average value serve as the informativity criterion. The proposed approach is applied to solve the problem of differentiating the operation modes of an object by constructing an image of the mapping and finding its boundary line. The results of the algorithm are analyzed, its advantages and disadvantages are presented. Obtained images of mappings can be used as the basis of a classifier of ob-ject operation modes. The optimization procedure in this case will be a training procedure for the classifier.
Targeted analysis of phenolic compounds by LC-MS v1
Authors: Amer Bashar , Kakumanu Ramu , Tian Yang , Eudes Aymerick , EK Baidoo Edward
Published: November 2021

Cell-wall-bound (CWB) aromatics such as ferulate and p-coumarate play important physiological roles in plant development and response to stresses. Their presence also poses some challenges and opportunities during processing of plant biomass in various agro-industrial applications. To this end, we have developed a robust high-throughput reversed-phase liquid chromatography mass spectrometry method for quantifying CWB phenolic compounds. The method showed excellent linearity (R2 = ≥0.999) and intraday retention time repeatability (≤ 0.31 %RSD) for ferulate and p-coumarate. The limits of detection and quantitation for these analytes were ≤ 39 nM and 130 nM, respectively. Furthermore, there was very little effect of the CWB sample matrix on the retention times of the analytes and analyte percent recoveries from the CWB sample matrix was ≥83.91%.
CatSumm: Spektral Çizge Bölmeleme ve Düğüm Merkeziliklerine Dayalı Çıkarıcı Metin Özetleme
Authors: UÇKAN Taner , HARK Cengiz , KARCİ Ali
Published: November 2021

Bu çalışmada, çok belgeli metin özetleme için yeni bir yöntemi CatSumm'ı (Cengiz, Ali, Taner Özetleme) tanıtıyoruz. Önerilen yöntem, üç ana adıma göre bir özet oluşturmaktadır: Giriş metinlerinin temsili, CatSumm modelinin ana aşamaları ve cümle puanlama. Girilen metinlerin gösterimi aşamasında kelime grupları arasındaki anlamsal bağlılığı korumak için bir Metin İşleme yazılımı tanıtılmış ve kullanılmıştır. CatSumm modelinin ana aşamalarından biri olan Spektral Cümle Kümeleme (SCK), spektral çizge bölmeleme sonrasında elde edilen alt çizgelerin oransal değerlerinden elde edilen özetleme işlemidir. Standart sapma ile hesaplanan bir eşik değerinin altında kalan cümlelerin özete dahil edilemeyeceği varsayımıyla, yöntemin ana aşamalarından bir diğeri de süper kenarların elde edilmesidir. Son olarak, araştırma kapsamında metin özetleme amacıyla CatSumm yönteminin sonucu, Belge Anlama Konferansı (DUC-2004, DUC-2002) veri setleri üzerinde ROUGE metrikleri ile ölçülmüştür. Yapılan ölçümler sonucunda Catsumm'ın benzer yöntemler kullanan özetleme yaklaşımlarından daha iyi performans gösterdiği tespit edilmiştir.
The next VІІ administrative appointment of the Society of Neuropathologists and Psychiatrs on December 23, 1914
Authors: Darkshevich L. О.
Published: November 2021

Chaired by: prof. Darkshevich, under the secretary of N. I. Bondarev. Attended by: prof. Osipov. Pervushin, Baklushinskiy, Donskov and Bondarev.
Saline infusions for sciatic neuralgia
Authors: Baklushinsky I. D.
Published: November 2021

The question of rational treatment of adherent neuralgia and neuritis has already been occupied by practitioners for a long time and has not yet received a sufficiently definite solution. The abundance of funds that recommends as neuropathology, in the form of means of internal and external, in the form of massage, electro-light and water treatment, as well as surgery, in the form of all kinds of injections and, finally, operational manipulations, all proves great interest. excited by this question on the one hand, and the unsatisfactory solution of his therapy on the other. Therefore, the meaning of the messages on this issue that have appeared over the past years is completely understandable, the interest that these messages aroused among neuropathologists on the issue of the treatment of Ischias is understandable. I am talking here about the treatment of mucous neuralgia with salt infusions, which have appeared recently and soon took a prominent place in the therapy of this kind of neuralgia.
Prof. E. A. Bogdanov. Mendelism or the theory of crossing. Ed. stud. Mosk, agricultural internet. 1914, p. 625.
Authors: Osipov V.
Published: November 2021

The theory of the Bohemian monk Mendel, which had been lying under the bed for about forty years and did not attract the attention of scientists to itself, over the past decade begins to rightfully receive more and more widespread distribution, adopted by more and more emissaries.
A Data-Driven Framework for Automated Detection of Aircraft-Generated Signals in Seismic Array Data Using Machine Learning
Authors: Zhang Xinxiang , Arrowsmith Stephen , Tsongas Sotirios , Hayward Chris , Meng Haoran , Ben-Zion Yehuda
Published: November 2021

Ground motions associated with aircraft overflights can cover a significant portion of the seismic data collected by shallowly emplaced seismometers, such as new nodal and Distributed Acoustic Sensing systems. This article describes the first published framework for automated detection of aircraft on single channel and multichannel seismic data. The seismic data are converted to spectrograms in a sliding time window and classified as aircraft or nonaircraft in each window using a deep convolutional neural network trained with analyst-labeled data. A majority voting scheme is used to convert the output from the sequence of sliding time windows onto a decision time sequence for each channel and to combine the binary classifications on the decision time sequences across multiple channels. Precision, recall, and F-score are used to quantify the detection performance of the algorithm on nodal data using fourfold time-series cross validation. By applying our framework to data from the Sage Brush Flats nodal array in Southern California, we provide a benchmark performance and demonstrate the advantage of using an array of sensors.
Infraestructura Verde Urbana III: Análisis de países
Authors: Castro Lancharro Borja
Published: November 2021

Esta publicación forma parte de una serie de tres documentos que exploran los diferentes aspectos de las soluciones de infraestructura verde urbana. En esta tercera parte se explora la institucionalidad y legislación ligada a cinco países de la región: Panamá, Paraguay, Perú, el Salvador y Surinam. Asimismo el documento también da cuenta de la situación actual del mercado en cada país y una lista de potenciales proveedores.
Silencing ferritin alleviates atherosclerosis in mice via regulating the expression levels of matrix metalloproteinases and interleukins
Authors: Zheng Mei , Li Lizhuo , Liu Yuqian , Liang Yun , Qi Xiaoyong
Published: November 2021

This study was conducted to investigate the roles of ferritin in atherosclerosis. The mouse model of atherosclerosis was established by feeding ApoE knockout mice with a high-fat diet. The mice were then treated with ferritin-overexpressing and -silencing constructs, and assessed for interleukins (ILs) and matrix metalloproteinases (MMPs) levels using ELISA and Western blot analysis. After being fed with a high-fat diet, the ApoE knockout mice developed pro-atherogenic lipid profiles with elevated total cholesterol (TC), triglyceride (TG) and low-density lipoprotein cholesterol (LDL-C). They also showed increased atherosclerotic lesions including narrowed lumen diameter, reduced lumen area, and increased plaque size. Following injection of the overexpression and silencing constructs, mRNA levels of ferritin were increased and decreased, respectively, and at the same time the atherosclerotic lesions were aggravated and alleviated, respectively. Further analysis indicated that silencing of ferritin gene reduced IL-1β and IL-10 levels while overexpressing ferritin increased them. On other hand, the TNF-α levels showed an opposite trend. MMP8, MMP12 and MMP13 levels were increased or decreased significantly after the mice were injected with ferritin over-expression or silencing vectors, respectively. Western blot analysis showed that compared to the control, overexpressing ferritin resulted in increased expression of p-JNK while silencing ferritin decreased the expression. Meanwhile, the levels of pc-Jun remained unchanged. Our work demonstrates that ferritin can regulate the progress of atherosclerosis via regulating the expression levels of MMPs and interleukins. Silencing ferritin inhibits the development of atherosclerosis and is, therefore, worth being further investigated as a potential therapeutic approach for this disease.
Liposomes co-loaded with ursolic acid and ginsenoside Rg3 in the treatment of hepatocellular carcinoma
Authors: Wang Bin , Xu Qiaoqiao , Zhou Chenjian , Lin Yu
Published: November 2021

Objective: Liposomes co-loaded with ursolic acid and ginsenoside Rg3 (UA+Rg3-LIP) were prepared to study their effects on the proliferation, apoptosis and cell cycle of hepatocellular carcinoma (HCC) cells. Methods: Liposomes were prepared by reverse evaporation, and then UA+Rg3-LIP were prepared by the pH gradient method, and followed by liposome characterization. Next, the effects of UA+Rg3-LIP on the proliferation, apoptosis and cell cycle of HepG2 cells were investigated by MTT method and flow cytometry at the cell level. Results: The entrapment efficiency of UA in UA+Rg3-LIP was 78.52% and that of Rg3 was 71.68%, as assayed by low-temperature ultracentrifugation. The in vitro release rates of UA+Rg3-LIP and UA+Rg3 detected by the dialysis membrane method were 1–10 h. The release rate of UA+Rg3 was close to 100%; that of UA+Rg3-LIP was decreased after 10 h and approached 100% after 24 h. It was further confirmed by cell experiments that UA+Rg3-LIP could significantly reduce cells' viability while at the same time increase their apoptosis rate and raise the proportion of cells in the G0/G1 phase. Conclusion: Liposomes co-loaded with ursolic acid and ginsenoside Rg3 could affect cell proliferation, apoptosis and cell cycle, thus slowing down the in vitro drug release ability of HCC.
Nexus Between FDI, Agriculture, and Rural Development: Evidence from Asian Countries
Authors: Paul Sujan Chandra , Jahan Nusrat , Nandi Ashim Kumar , Rahman Md Asiqur
Published: November 2021

The aim of this study is explore the effect of foreign direct investment on agriculture and rural development. For this, panel data of 46 countries from Asia were accumulated for the time frame 1991–2018. The models OLS, POLS, 2SLS, and GMM are employed in this study. The study reveals that there is a favorable association between foreign direct investment and agricultural land as percentage of total land using the models OLS, POLS, 2SLS. In stark contrast, value added for agriculture, forestry, and fishing has an unfavorable association with foreign direct investment in all models employed in the study. Furthermore, female employment in agriculture has a negative association with foreign direct investment in OLS, 2SLS and GMM models, whereas male employment in agriculture has a negative association with foreign direct investment in the POLS model only. Land under cereal production has a favorable association with foreign direct investment in all models except POLS, and permanent cropland has a favorable association with foreign direct investment in all models except GMM. In addition, rural population has a positive relationship with foreign direct investment in OLS, POLS and 2SLS and a negative relationship with foreign direct investment in GMM.
Moral distress among Iranian neonatal intensive care units’ health care providers: a multi-center cross sectional study
Authors: Tajalli Saleheh , Rostamli Somayeh , Dezvaree Nazi , Shariat Mamak , Kadivar Maliheh
Published: November 2021

Due to the unique nature of the neonatal intensive care unit (NICU) and its moral distress, this study aimed to investigate moral distress in the NICU. This cross-sectional study was conducted on 234 physicians and nurses working in the neonatal wards of eight hospitals. The Corley’s Moral Distress Scale was used to collect data. Findings showed that 25 of the participants were physicians and 209 were nurses. The intensity and frequency of distress among physicians and nurses were assessed as moderate. The mean intensity and frequency of moral distress among nurses and physicians were 48.3%, 41.5% and 46.46%, 15.62% respectively. The results showed that the mean intensity and frequency of distress were higher, however not significantly, among nurses. The intensity and frequency of moral distress had a statistically significant and direct correlation with the intention to leave and the number of staff in each working shift among the nurses. Moral distress in the NICU practitioners was moderate, so addressing this issue and trying to alleviate it was important. Identifying the causes behind moral distress can help adopt appropriate measures to prevent and reduce them.
Ethical considerations for clinicians faced with patients lacking the capacity to form reasoned judgments regarding COVID-19 tests and isolation
Authors: Yuk-Chiu Yip Jeffrey
Published: November 2021

Dealing with patients suffering severe mental health problems during the Coronavirus disease 2019 (COVID-19) pandemic have raised several, complex, clinical and ethical questions (1). Such patients may need to be treated within secure facilities where many patients and staff live in close proximity, increasing the risk of disease transmission. In February 2020, in the Daenam hospital in South Korea, an infection cluster was found in the psychiatric ward, with 101/103 patients testing positive (2). In this pandemic’s unprecedented circumstances, psychological pressure on medical staff has been severe (3). Clinical staff have been significantly at risk when dealing with psychiatric inpatients, especially in areas where high infection levels have led to shortfalls in personal protective equipment supply. Several strategies are required to reduce infection risks for psychiatric inpatients and their caregivers. Such strategies may include a comprehensive test program, mask-wearing, and social distancing. However, psychiatric patients would frequently not possess the capacity to make reasoned judgments regarding the refusal of testing or noncompliance with anti-infection protocols. Because of psychiatric illness, such patients may refrain from being tested or following protocols such as mask-wearing or isolation. Thus, clinicians have faced with serious ethical problems when dealing with psychiatric inpatients during this pandemic, in that they must balance the requirements of respecting patient autonomy and allowing them as much freedom of self-determination as is appropriate, against the need to protect the patient from infection and prevent them from infecting others. This commentary aimed at assisting clinicians facing with such ethical dilemmas.
Electronic Device Screen Time and Meibomian Gland Morphology in Children
Authors: Kocamiş Özkan , Temel Emine , Aşikgarip Nazife , Örnek Kemal
Published: November 2021

Purpose: To investigate changes in meibomian gland morphology and impact of electronic device usage time on meibomian glands in pediatric age group.
Methods: In this prospective study, 149 eyes of 149 children were enrolled. The participants also completed the Standard Patient Evaluation of Eye Dryness (SPEED) questionnaire and provided information regarding weekly hours spent in front of a digital screen. Meibography was performed in all subjects. Grading of images was evaluated using a previously validated 5-point meiboscale (0–4) for meibomian gland atrophy and a 3-point scale for meibomian gland tortuosity (0–2).
Results: Of the 149 enrolled children, 83 (55.7%) were female and 66 (44.3%) male. The mean age was 13.0 ± 3.0 (range: 5–18) years. The mean loss of meibomian gland area was 20.80 ± 9.32%. The mean meiboscore was 1.20 ± 0.58 for gland atrophy and the mean tortuosity score was 0.99 ± 0.62. The mean screen time was 29.32 ± 16.18 hr/week. There was a weak and significantly positive correlation between loss of meibomian gland area and screen time (r = 0.210, p = 0.010). There was a weak and significantly positive correlation between meiboscore for gland atrophy and screen time (r = 0.188, p = 0.022). We found a weak but significantly positive correlation between meibomian gland tortuosity and screen time (r = 0.142, p = 0.033).
Conclusion: Meibomian gland morphology may show changes in pediatric age group and excessive screen time may be a factor triggering these changes in gland morphology.
A Simple Inner-Stopper Guarded Trephine for Creation of Uniform Keratectomy Wounds in Rodents
Authors: Le Peter B. , Chen Fang , Myung David
Published: November 2021

Purpose: Creating controllable, reproducible keratectomy wounds in rodent corneas can be a challenge due to their small size, thickness, and the lack of usual tools available for human eyes such as a vacuum trephine. The purpose of this work is to provide a consistent, reproducible corneal stromal defect in rats using a simple, economical, and customized inner-stopper guarded trephine.
Methods: The inner-stopper guarded trephine is used to induce a circular wound in rat corneas. After trephination, the corneal flap can be removed by manual dissection using a blunt spatula. We used optical coherence topography (OCT) to measure the defect wound depth induced in ex vivo rat eyes.
Results: Despite a minor learning curve, this simple device enables depth control, reduces variability of manual keratectomy wound depth in rats, and decreases the risk for corneal perforation during keratectomy. Corneal defect creation was highly reproducible across different researchers and was independent of their surgical training.
Conclusion: This inner-stopper guarded trephine can be utilized and applied to preclinical testing of a wide range of corneal wound healing therapies, including but not limited to biotherapeutics, corneal prosthetics, and regenerative technologies.
Análisis del comportamiento físico de tripulaciones y su impacto en la toma de decisiones en la ejecución de operaciones aéreas
Authors: Arias Suárez Óscar Fernando
Published: November 2021

"La presente investigación aborda la posibilidad de mejorar los procesos de toma de decisiones en la ejecución de operaciones aéreas, a partir del desarrollo de una herramienta tecnológica que permite la adquisición de señales biomédicas con el propósito analizarlas para establecer diversos comportamientos de las tripulaciones, mediante su interpretación desde el área de medicina aeroespacial, y así validar, a través de procesos de simulación, la relación entre la variabilidad de las señales biomédicas y la conducta y desempeño de las tripulaciones, detectando factores determinantes cuando se requiera tomar decisiones en operaciones aéreas en tiempo real, y, además, mejorando la seguridad operacional. En la actualidad, las señales biomédicas pueden ser empleadas para verificar el estado de salud y condición física de una persona; no obstante, y bajo el análisis e investigación realizados en este trabajo, también se concluye que pueden ser empleadas para mejorar procesos de toma de decisiones. Lo anterior, estableciendo comportamientos de las tripulaciones, las reacciones biomédicas de sus cuerpos y la interpretación de especialistas en el área de medicina de aviación, lo cual puede llegar a determinar factores cuando se requiera tomar decisiones en operaciones aéreas en tiempo real, coadyuvando al mejoramiento de la seguridad operacional."
Nutritive value and availability of commonly used feed ingredients for farmed nile tilapia (Oreochromis niloticus L.) and African catfish (Clarias gariepinus, Burchell) in Kenya, Rwanda and Tanzania
Authors:   Kenya Marine & Fisheries Research Institute, Munguti J , Charo-Karisa H , Opiyo MA , Ogello EO , Marijani E ,   Open University of Tanzania, Nzayisenga L ,   National University of Rwanda, Liti D ,   Chepkoilel University College, Kenya
Published: November 2021

Commonly utilized feed ingredients for culture of Nile tilapia ( Oreochromis niloticus ) and Africa n catfish ( Clarias gariepinus ) from Kenya , Tanzania and Rwanda were collected over a period of six months (January - June 2010) and evaluated for their nutritive composition through proximate analysis. Most of the fish feed ingredients were found in all the three countries except a few that were unique to one or two countries as detailed in the results . Feed ingredients of animal origin exhibited significantly (P <0.05) higher crude protein levels (407 - 635 g/kg DM ) compared to the feed ingredients of plant based origin . Freshwater shrimp s ( Caridina nilotic a ) contained the highest crude protein levels of 635 g/kg DM. Feed ingredients of animal origin had low ether extracts (EE) with an exception of Omena fish ( Rastrineobola argentea ) . Crude fibre (CF) was generally higher on feed ingredients of plant origin and ranged between 55 - 368 g/kg DM while Nitrogen Free Extract s (Nf E) and ash content were higher in the feedstuff s of plant origin with an exception of maize bran which had the lowest value. Omena fish and freshwater shrimp had higher ash content of 182 and 228 g/kg DM compared to other feed ingredients of animal origin, which may indicate contamination with soil particles during drying process . Based on the feed ingredient availability, potential competition with other human uses, content of crude protein and crude fibre and the feasibility of removal of anti -nutritional factors, C . nilotica , blood meal, meat and bone meal , were identified as most promising sources of animal based protein. Cotton (Gossypium spp) and sunflower ( Helianthus annuus ) seed cakes provided the best option as source of processed plant based protein. L eaves of gallant soldier ( Galiso nga parviflora ) , sweet potato ( Ipomoea batatus ), cassava ( Manihot esculenta ) and papaya ( Papaya carica ) were identified as high potential feedstuffs of plant origin either processed or in raw form for small -scale fish farming . We recommend that in well fertilized semi- intensive ponds , maize ( Zea mays ) , wheat ( Triticum aestivum ) and rice ( Oryza sativa ) bran may be utilized where available to supplement natural pond food
Carcass and slaughter traits of weanling pigs fed graded levels of wild sunflower (Tithonia diversifolia) leaf meal
Authors:   Ekiti State University, Fasuyi AO , Ibitayo FJ , Fagbuaro SS
Published: November 2021

Growing pigs were used to assess the slaughter and carcass characteristics, organs and primal cut yields when fed diets supplemented with processed leaves of Tithonia diversifolia (wild sunflower) referred to as Tithonia diversifolia leaf meal (TDLM). A 63-day feeding trial was conducted with commercially available male Large White growing weanling pigs on four experimental diets containing 19.0% crude protein and a digestible energy value of 2997 kcal/kg. Tithonia diversifolia leaf meal (TDLM) progressively replaced soybeans at 10%, 20% and 30% inclusion levels in diets 2, 3 and 4, respectively. Carcass yields for pigs on 10% TDLM were similar (p>0.05) to the values obtained for pigs on the control diet without TDLM. Most other carcass parameters such as carcass length, chest width, trochanter width and leg length were similar (p>0.05) and variations where they existed were minimal. Slaughter traits such as live weight at slaughter, empty slaughter weight, dead weight and back fat depth were significantly better (p<0.05) for pigs on the control diet without TDLM inclusion at 20.2kg, 14.6kg, 19.1kg and 0.9cm, respectively. These values were closely followed by the values obtained for pigs on 10% dietary TDLM inclusion at 15.6kg, 11.5kg, 15.1kg and 0.5cm for live weight at slaughter, empty slaughter weight, dead weight and back fat depth, respectively. Poor values of empty slaughter weight, body mass index, dead weight and back fat depth were recorded for pigs on diets 3 (20% TDLM) and 4 (30% TDLM) ostensibly due to the low feed intake and subsequent poor weight gain and high feed conversion ratio. The above trend was repeated for offals and organs yields. However, reproductive organs were not adversely affected even at 30%. Most determined experimental pig primal cuts were within moderate ranges according to literature and also similar to values obtained for pigs on experimental control diet. Conclusively, pigs on 10% TDLM inclusion level had comparable slaughter/carcass traits, organs and primal cut yields with pigs on the control diet without TDLM and also with most reported values in existing literature. Growing pigs tolerated TDLM and in some cases surpassed the performances of pigs on conventional growing pig diets. Further research studies may be necessary to investigate the nutritional value of TDLM when more adequate processing techniques are employed to reduce its anti-nutrients.
Nutritional Composition of Green Robusta Coffee (Coffea canephora) Beans under Organic and Integrated Nutrition with Varying Shade and Irrigation Management Practices in Western Ghats of India
Authors: Hareesh S.B. , . Jayarama
Published: November 2021

Background: Cultural practices and environment may affect the physical, chemical, microbiological and nutritional qualities of the raw beans. With the advent of nutritional labelling regulations (FDA, 1973), many coffee bean processors have incorporated nutrition information on their products for label declaration. The current field experiment aimed to study to know the influence of nutrient management practices, irrigation and shade pattern on nutrient status of green coffee beans and yield of robusta coffee. Methods: This field-laboratory experiment was carried out at nine selected robusta coffee estates located at Western Ghats of India, i.e., Koppa region of Chikkamagaluru District, situated in the south western part of Karnataka State. The experiment was laid out in randomized block design (RBD) with 25 plants per treatment (plot size- 112 m2) with four replications. Representative coffee fruits from the experimental blocks were collected during harvesting period (February-March). After harvesting of the fruits they were wet processed to remove pulp and mucilage from the fruits. Further, they were sun dried up to 10 percent moisture level and stored using standard methods. Result: The green coffee bean N and P concentration remained higher (3.1 and 0.37%) in INM mode of nutrition compared to that of exclusive organics (3.0 and 0.36%). Within organic mode of nutrition, the shade pattern and irrigation schedule imparted difference in N assimilation. The bean K content did not vary between the INM and organic nutrition modes as depicted by similar (1.8%) values. However, within organic mode of nutrition, the shade pattern and irrigation schedule imparted difference in K assimilation. The average bean yield remained higher (1230 kg ha-1) in INM mode of nutrition compared to that of exclusive organics (1101 kg ha-1).
Assessment of Genetic Diversity and Population Structure in Pea (Pisum sativum L.) Germplasm based on Morphological Traits and SSR Markers
Authors: Singh Shalini , Singh B. , Sharma V.R. , Kumar M. , Sirohi U.
Published: November 2021

Background: The study was undertaken to assess the genetic diversity and genetic structure among fifty-five pea accessions using morphological traits and SSR markers. Methods: A total of 55 pea accessions were analyzed using eleven phenotypic traits and twenty SSR markers. The data obtained by morphological and molecular profiling was used for the analysis of genetic diversity and for the estimation of genetic diversity estimates, correlation, principal components analysis and population structure. Result: This study reveals that majority of genetic variation was due to variation within population and were clustered into two distinct groups, which reveals a high admixture within individuals. Accessions viz., VRP-82, VRP-320, VRP-194, VRP-375, EC-97280 and EC-8724, showed great diversity as compared to the other accessions based on both morphological and molecular markers. These accessions may assist in developing and planning breeding strategies aimed to produce new varieties in the future.
The dynamic process of student-teachers’ construction of identity as future teachers
Authors: Torres Cepeda Nancy Maria , Ramos Holguín Bertha
Published: November 2021

This paper reports the findings of a qualitative narrative-inquiry study aimed at exploring what English-as-a-Foreign-Language (EFL) student-teachers’ life stories revealed about their identity construction as future teachers. The project was carried out among eighth-semester student-teachers from a public university in Tunja, Boyaca (Colombia). Hence, the data collection drew upon written life stories and in-depth interviews. Findings suggest that there are some critical factors that helped student-teachers construct their identities as future EFL teachers. These factors are all tied to previous experiences of student-teachers as language learners themselves, a connection and affiliation they establish with their teacher educators as projected images they have of themselves as future teachers. Moreover, real teaching experiences were opportunities for student-teachers to make sense of the myriad issues education involves, which made them, develop positions towards education as future teachers.
Predicción de perfiles de consumo eléctrico usando polinomios potenciales de grado uno y redes neuronales artificiales en la infraestructura de medición inteligente
Authors: Urgilés Pablo , Inga-Ortega Juan , Peralta Arturo , Ortega Andrés
Published: November 2021

Este trabajo analiza métodos y algoritmos de predicción del comportamiento de consumo eléctrico basados en redes neuronales, usando datos obtenidos de la infraestructura de medición avanzada (AMI) de una institución educativa. También, se ha realizado un contraste entre el uso de redes neuronales convencionales (ANN), redes neuronales basadas en wavelets (WNN) y los polinomios potenciales de grado uno (P1P). Se analiza la correlación de cada método de predicción, así como el comportamiento del error cuadrático medio (MSE) para finalmente establecer si existe un desbalance en el coste computacional a través del análisis de Big-O y el tiempo de ejecución. Los resultados cuantitativos del error MSE están por debajo del 0,05% para predicciones con ANN y usan un alto costo computacional. Para P1P se presentan errores alrededor del 1,2% mostrando como método de predicción de bajo consumo computacional pero aplicable de forma principal para un análisis a corto plazo. Este trabajo se da en respuesta a la necesidad de establecer una plataforma que permita aprovechar la estructura de medición inteligente, a través de la predicción de perfil de consumo eléctrico con el objetivo de elaborar una planificación de mantenimiento y gestión de la demanda eléctrica para reducir costos de operación desde el consumidor final hasta el gestor de la distribución de energía eléctrica. Para el análisis de las proyecciones sobre el perfil de carga eléctrica se consideran las características estadísticas del consumo para seleccionar los algoritmos de predicción según la cantidad de días a proyectar, usando los datos de cualquiera de los medidores inteligentes, que pueden ser monitoreados en una red eléctrica orientada a las Smart Grids.
Clasificación de comportamiento de conductores en curvas horizontales de carreteras rurales de dos carriles
Authors: Rosas-López Cristian-David , Gaviria-Mendoza Carlos-Andres , Calero-Valenzuela Carlos-Anibal
Published: November 2021

Los componentes de una vía infieren directamente en su seguridad vial y, a partir de un análisis de la consistencia en el diseño geométrico se puede cualificar esta condición. La velocidad del vehículo es un factor considerado en la evaluación de la consistencia de diseño geométrico y se considera constante a lo largo de la transición del conductor entre las tangentes de las curvas horizontales. Sin embargo, los conductores en la mayoría de los casos adoptan una velocidad diferente dependiendo de la posición del vehículo antes, durante y después de la curva, por lo cual, un perfil de velocidad permite describir mejor este comportamiento y, estudiar la relación entre la velocidad y los elementos de la curva. La literatura previa muestra que el entorno rural influye en la velocidad de los usuarios de la carretera. Asimismo, las negociaciones en las curvas horizontales están vinculadas a un elevado número de accidentes, la mayoría de los cuales están causados por errores del conductor y un estilo de conducción agresivo/arriesgado. En esta investigación se estudia el número óptimo de comportamientos de los conductores y el proceso de segregación de estos para una base de datos de perfiles de velocidad registrados en campo. Para esto se propone un esquema basado en conglomerados, partiendo de la selección de un numero óptimo de conglomerados aceptable para las características de los datos y posteriormente, utilizando la técnica k-means para agrupar los perfiles semejantes. Se emplea un grupo de datos de velocidad a flujo libre utilizado en 38 curvas horizontales en vías rurales en Puerto Rico que fueron instrumentadas en ambas direcciones. La validación de la metodología propuesta se realiza mediante la comparación directa de la cantidad de comportamientos observados en los usuarios con las características geométricas y operacionales de las curvas. Los resultados muestran que al emplear 3 tipos estilos de conducción referidos como agresivo, moderado y cauto y, agregar dos variables inferidas que consideran el tiempo que el conductor permanece cerca o por encima del límite de velocidad y los cambios en la aceleración durante su desplazamiento por la curva permiten una categorización más clara y uniforme de los perfiles de velocidad. Adicionalmente, se observa que la cantidad de perfiles agrupados presentan una alta dependencia con los valores que toman las variables del diseño de la curva como es de esperarse debido a su influencia en la percepción de la seguridad por parte de los conductores.
Analysis of Language Learning Strategies Used by Two Groups of Students of Differing Age Range
Authors: Suesca Torres Francisco Javier , Torres Pérez Andrés Mauricio
Published: November 2021

This short exploratory study aims to analyze the language learning strategies used by part of two groups of students with different age range in seventh and eleventh grade. The instruments used to carry out this study were: an adapted questionnaire to identify Language Learning Strategies (LLS), a focus group discussion, and an interview. The results show that age is an important factor when determining LLS. However, it was also found that there are other variables such as task nature, course methodology, and parents’ availability, among others, that may influence strategy choice.
Bilingualism in Colombia Higher Education
Authors: Martínez Rincón Sandra Liliana
Published: November 2021

This theme review describes aspects related to bilingualism and its incidence in higher education. Specifically, the author shows a brief overview of what bilingualism means; what the National Bilingual Program started in 2004 and its evolution into Colombia, very well for 2015 entail in terms of their impact on both teaching and learning; and the importance for the Ministry to modify certain aspects regarding bilingualism in education in our country.The paper also includes some studies and theories which support the author’s statements as well as the introduction of some current events at a private university in Sogamoso, Colombia, which are directly related to the matter of bilingualism. Finally, the author presents some conclusions from the present paper.
An Exploration of Inclusive Education Policies Aimed at Students with Disabilities vs. the Panorama of EFL Scenarios in Colombia
Authors: Ochoa Dayra Piedad
Published: November 2021

This article reflects upon the policies that regulate inclusive education in Colombia for students with disabilities and contrasts it with the reality of EFL teaching/learning nowadays. The concept of inclusion has gained interest among government officials and scholars in recent decades; as a result, much inclusivity legislation has been created to guarantee access for disabled students in mainstream schools. However, there are not clear procedures and adequate scenarios to address foreign language education in Colombia for this population, resulting in more exclusion, discrimination and lack of opportunities for disabled learners.
Cobertura negativa sobre los candidatos en campañas presidenciales 2011 y 2016: los casos de los diarios La República y Correo
Authors:   ,   Universidad Peruana de Ciencias Aplicadas (UPC), Valdivia Alarcón Angela
Published: November 2021

Durante las elecciones presidenciales del 2011 y 2016, muchos medios de comunicación tuvieron un tono más negativo que positivo o neutral en sus coberturas sobre determinados candidatos. Estos fueron los casos de los diarios La República y Correo sobre los candidatos presidenciales Keiko Fujimori de Fuerza Popular, Ollanta Humala del Partido Nacionalista Peruano y Verónika Mendoza del Frente Amplio. Partiendo del hecho de que sí existió una cobertura negativa por parte de los medios ya mencionados, la presente investigación pretende describir las características principales de este tipo de tratamiento periodístico, identificar los criterios de cada diario para la publicación de notas en contra de los candidatos y examinar las diferencias y similitudes entre ambas coberturas.
Taxonomía de aplicaciones y videojuegos de realidad mixta
Authors:   , Sánchez Requejo Luis Felipe , Ramirez Reyes Jam Carlo
Published: November 2021

La realidad mixta, unificación de la realidad virtual y la realidad aumentada, posee muchas expectativas debido a las grandes tendencias que han surgido desde su creación y la forma en que ha fusionado casi en su totalidad a nuestro mundo real con el mundo digital, con la proyección de objetos digitales que estimulan los sentidos, logrando obtener una percepción similar a los objetos del entorno real y llevando su uso a múltiples posibilidades. En la investigación se identificó la problemática que aborda la necesidad de profundizar sobre las propiedades de la realidad mixta y los objetivos a trazar para cubrir con dicha necesidad. Durante el proyecto se logró recolectar información y crear un catálogo sobre los distintos tipos de aplicaciones, dispositivos y soluciones tecnológicas implementadas referente a la tecnología. Se investigó acerca de la parte teórica de la realidad mixta en base a las distintas definiciones del autor seminal y de expertos en la materia, además de las definiciones sobre las tecnologías con funcionalidades similares. Además, se procesó la información obtenida, identificando los rubros de negocio en donde se desempeña la realidad Mixta. Finalmente, se logró crear una taxonomía de realidad mixta y un gráfico estadístico de la participación de cada rubro de negocio en el mercado, con el fin de poder tener un panorama claro de la adopción y el valor comercial de cada rubro en donde se ejerce dicha tecnología y que pueda ser utilizado como referencia para la creación de proyectos de tecnología.