bluuebunny/crossref_metadata_2025 huggingface dataset:
CERTIFICATION OF MAJOR CHANGES IN AVIATION TECHNOLOGY
Authors: Sukhova T. S. , Aleksashina O. V.
Published: September 2024

Major change certification allows organizations to implement and control changes to designs, systems and equipment. This is a complex and responsible step that requires compliance with standards and safety requirements. The application for approval of a major change must contain all necessary documentation and information to demonstrate that the changes comply with safety and quality requirements. This approach guarantees the reliability of the changes being implemented. This article describes in detail the procedure for certification of major changes in aviation technology.
CONVOLUTIONAL NEURAL NETWORKS USAGE FOR RASTER IMAGE PROCESSING IN NON-DESTRUCTIVE TESTING
Authors: Kleizer M. P. , Kuvshinnikov V. S. , Kovshov ( E. E.
Published: September 2024

An overview of Russian and foreign literature sources on the use of computer vision technologies and convolutional artificial neural networks in technological operations of visual control is presented. Methods and algorithms review of computer vision and artificial neural network models used by the authors of scientific articles, methods of preprocessing and expanding the initial data set for models training under consideration and verifying the correctness of machine vision algorithms is carried out. Possible approaches for automating the assessment of visual quality control in various fields of industry are highlighted, research results, results of machine vision algorithms, neural network models, their accuracy and efficiency indicators are presented, as well as areas and possible scenarios for the application of the presented algorithmic solutions. Some results of machine vision algorithms, neural network models, their accuracy and efficiency indicators are presented.
APPLICATION OF ARTIFICIAL INTELLIGENCE MODELS IN 5G AND 6G COMMUNICATION NETWORKS FOR NETWORK TRAFFIC CLASSIFICATION
Authors: Obukhov S. A. , Elagin V. S.
Published: September 2024

An overview of artificial intelligence and machine learning models that can be adapted or used for traffic classification in 5G and 6G networks is provided. Emphasis is placed on convolutional neural networks, designed to handle data with a constant network topology. Given this feature, the need to transform traffic data into formats suitable for convolutional neural networks is outlined. Models capable of traffic classification, such as LeNet-5, AlexNet, VGGNet, ResNet, 1D CNN, Inception (GoogleNet), MobileNet, and Capsule Networks are proposed. Their features, advantages, and disadvantages are summarized. The structure of 6G networks is proposed. A description of the levels of 6G networks is given, and the tasks to be solved by artificial intelligence at each level are outlined. Specific neural network architectures and existing algorithms for 6G networks are listed, including authors, year of creation, and main articles on the topic, with features. The conceptual place of artificial intelligence in 6G networks is described, considering the type of centralization. Positive and negative consequences from the implementation of artificial intelligence in 6G networks are highlighted.
MODIFICATION OF 3D BALANCE MODEL FOR BI-POLAR AGGREGATION OPERATORS VISUALISATION
Authors: Sakulin S. A. , Lychkov I. I. , Gavrilov N. , Nedashkovsky V. M.
Published: September 2024

Aggregation operators provide an overall assessment of an object or a process which is described with several quantitative criteria. An aggregation operator is constructed on the basis of expert knowledge and can take into account the types of criteria interdependencies, the partial order of criteria importance, the desired overall scores for distinct sets of the criteria values provided by an expert. However, in practice the aggregation operator construction process and its result appear to be difficult to perceive and understand by an expert. There is a balance model method for visualizing the aggregation operators in order to simplify evaluation of their conformity to expert preferences. This method allows visualizing an aggregation operator in an intuitively clear way as a mechanical system of weights on a rod. One limitation of the balance model method is that the weights can overlap each other on a rod which makes it difficult to perceive the aggregation result by the expert. A three-dimensional balance model overcomes this limitation but it can visualize unipolar aggregation operators only. This paper extends the existing three-dimensional balance model for bipolar aggregation operators. The extended model allows visualizing the aggregation operators of the criteria defined on bipolar scales of three different types: symmetric bipolar scales, homogeneous bivariate bipolar scales, heterogeneous bipolar scales. The model plane rotation angle constraints were updated to visualize the bipolar aggregation operators. The implementation of the extended model in the Unity game engine is presented. The application of the extended model is illustrated in a case study of the energy storage technology selection considering a trade-off between its performance and its environmental impact.
Rice Disease Image Classification using MobileNetV2 Pretrained Model with AcivationAttention Visualization using Gradient-weighted Class Activation Mapping (Grad-CAM)
Authors: Fiqri Fahmi Noor , Setyaningsih Sri , Saepulrohman Asep , Ismangil Agus
Published: September 2024

Rice diseases is one of the recurring factors of failed harvest and reduced rice production output and it is one of the biggest problems for Indonesia especially because of Indonesia’s population dependent of rice as it’s staple food. Pest control using fast dan early detection is one of the solutions to reduce the potential of failed harvest. Using a pretrained model of MobileNetV2, a model has been successfully built to detect for different types of rice diseases using convolutional neural network architecture and transfer learning method. The modelling process uses 7.077 image sample of rice infected by bacterial blight, blast, brown spot, and tungro. The model then can be accessed through website and has 99% of classification accuracy. Furthermore, using Gradient-Weighted Class Activation Mapping (Grad-CAM) rice disease can then be marked on top of the original image as a heat map, providing the users easier way to localize dan verify the classification result faster.
The effects of implicit corrective feedback on production of lexical stress in L2 English
Authors: Parlak Özgür
Published: September 2024

The interactionist approach to second language acquisition has yielded a plethora of studies confirming the positive impact of interaction and corrective feedback on second language (L2) development. Nevertheless, only a few studies have attempted to investigate the development of L2 prosody using the interactionist approach. The current study contributes to this line of research by investigating the relationship between recasts and the production of primary stress in L2 English. Following a pretest-posttest design, 68 L1 Arabic speakers were randomly assigned to control and intervention groups. The pre- and posttest comprised sentence-completion and information-exchange tasks, whereas the intervention was a role-play task that dyads carried out with the researcher. The intervention group received a recast upon producing target words with misplaced primary stress, whereas the control group did not receive any corrective feedback. The results of acoustic analyses, which focused on syllable duration, intensity, and pitch, indicated a positive relationship between recasts and development of primary stress placement. The results were also supported by expert listener judgments. The findings suggest that interaction and implicit corrective feedback play a positive role in the development of lexical stress.
Adjustability of Gait Speed in Clinics and Free-Living Environments for People With Parkinson’s Disease
Authors: Nishi Yuki , Fujii Shintaro , Ikuno Koki , Terasawa Yuta , Morioka Shu
Published: September 2024

Objective Gait speed is regulated by varying gait parameters depending on the diverse contexts of the environment. People with Parkinson’s disease (PwPD) have difficulty adapting to gait control in their environment; however, the relationships between gait speed and spatiotemporal parameters in free-living environments have not been clarified. This study aimed to compare gait parameters according to gait speed in clinics and free-living environments.Methods PwPD were assessed at the clinic and in a free-living environment using an accelerometer on the lower back. By fitting a bimodal Gaussian model to the gait speed distribution, gait speed was divided into lower and higher speeds. We compared the spatiotemporal gait parameters using a 2 × 2 (environment [clinic/free-living] × speed [lower/higher]) repeated-measures analysis of variance. Associations between Parkinson’s disease symptoms and gait parameters were evaluated using Bayesian Pearson’s correlation coefficients.Results In the 41 PwPD included in this study, spatiotemporal gait parameters were significantly worse in free-living environments than in clinics and at lower speeds than at higher speeds. The fit of the walking speed distribution to the bimodal Gaussian model (adjustability of gait speed) in free-living environments was related to spatiotemporal gait parameters, severity of Parkinson’s disease, number of falls, and quality of life.Conclusion The findings suggest that gait control, which involves adjusting gait speed according to context, differs between clinics and free-living environments in PwPD. Gait assessments for PwPD in both clinical and free-living environments should interpret gait impairments in a complementary manner.
Multiplicity of normalized semi-classical states for a class of nonlinear Choquard equations
Authors: Wu Jinxia , He Xiaoming
Published: September 2024

This article is concerned with the existence of multiple normalized solutions for a class of Choquard equations with a parametric perturbation

−

ε

2

Δ
u
+
V

(

x

)

u
=
λ
u
+

ε

−
α

(

I

α

*
F

(

u

)

)

f

(

u

)

,

x
∈

R

N

,

∫

R

N

∣
u
∣

2

d
x
=

a

2

ε

N

,

\left\{\begin{array}{ll}-{\varepsilon }^{2}\Delta u+V\left(x)u=\lambda u+{\varepsilon }^{-\alpha }\left({I}_{\alpha }* F\left(u))f\left(u),\hspace{1.0em}& x\in {{\mathbb{R}}}^{N},\\ \mathop{\displaystyle \int }\limits_{{{\mathbb{R}}}^{N}}{| u| }^{2}{\rm{d}}x={a}^{2}{\varepsilon }^{N},\hspace{1.0em}& \end{array}\right.

where

a
>
0

a\gt 0

is a constant,

ε
>
0

\varepsilon \gt 0

is a parameter,

N
≥
3

N\ge 3

,

α
∈

(

0
,
N

)

\alpha \in \left(0,N)

,

λ
∈
R

\lambda \in {\mathbb{R}}

is unknown and appears as a Lagrange multiplier,

f

f

is a continuous function with

L

2

{L}^{2}

-subcritical growth, and

V
:

R

N

→

[

0
,
∞

)

V:{{\mathbb{R}}}^{N}\to \left[0,\infty )

is a continuous function, satisfying del Pino and Felmer’s local conditions. With the help of the penalization method, and Lusternik-Schnirelmann theory, we investigate the relationship between the number of positive normalized solutions and the topology of the set, where the potential

V

V

attains its minimum value if the parameter

ε
>
0

\varepsilon \gt 0

is small.
Principal spectral theory and asymptotic behavior of the spectral bound for partially degenerate nonlocal dispersal systems
Authors: Zhang Lei
Published: September 2024

The purpose of this paper is to investigate the principal spectral theory and asymptotic behavior of the spectral bound for cooperative nonlocal dispersal systems, specifically focusing on the case where partial diffusion coefficients are zero, referred to as the partially degenerate case. We propose two sufficient conditions that ensure the existence of the principal eigenvalue in these partially degenerate systems. Additionally, we study the asymptotic behavior of the spectral bound for nonlocal dispersal operators with small and large diffusion coefficients, considering both non-degenerate and partially degenerate cases. Notably, we find a threshold-type result as the diffusion coefficients tend towards infinity in the partially degenerate case. Finally, we apply these findings to discuss the asymptotic behavior of the basic reproduction ratio in a viral diffusion model.
Gebet als Kapital?
Authors: Weitzel Tim
Published: September 2024

Abstract

This article focuses on the question as to what extent prayer can be defined as a form of capital. To this end, a look is first taken at Pierre Bourdieu’s classical theory of capital, in order to subsequently clarify whether prayer can be associated with one of Bourdieu’s forms of capital ( economic, cultural and symbolic capital ) or whether it seems more appropriate to expand Bourdieu’s theory by adding a sub-form. The paper then asks about the risks involved in the Middle Ages when attempts were made to convert the immaterial resource of prayer into other forms of capital, by looking at the ‘Vita Columbani’ from the early Middle Ages. Finally, the article focuses on the prayer brotherhoods as a typical medieval response to secure the exchange of gifts between the prayers and the powerful in medieval society.
When Populism Meets the Constitutional Dimension: A Formal Framework for Facilitating Comparative Constitutional Studies
Authors: Barrios-Suvelza Franz Xavier
Published: September 2024

In this article, a systematic framework has been developed that identifies the key conceivable formal relationships that form the interface between populism and the constitution. It is concluded that while populist constitutionalism is a dead-end category because populism itself does not respect limitations on power, constitutional populism is possible. The various manifestations of constitutional populism are then broken down according to whether populism is capable of effectively influencing the content of a constitution. In the case of genuinely populist content, the various degrees of this influence are illustrated, all the way up to the almost impossible realization of a populist constitution. After a comparative application of these findings to Hungary and Bolivia and their constitutional reforms, the layers and scales at which populism can affect the state are explained using a three-dimensional representation. The article concludes by cautioning against the risks of the common practice among scholars of adjectivizing the noun ‘constitutionalism’, as in the case of ‘populist constitutionalism’, without defining the point at which the adjective corrupts the noun.
Between (anti-)grammar and identity: a quantitative and qualitative study of hyperdialectisms in Brabantish
Authors: Doreleijers Kristel , Grondelaers Stefan
Published: September 2024

Incomplete mastery of dialect grammar engenders ‘hyperdialectisms’ which may be unconscious errors, but which may also be the result of indexical resourcefulness, viz. the profiling of a regional identity. Fifty younger and older speakers from the Brabantish city of Eindhoven (Netherlands) were first administered an acceptability judgment task containing correct forms and three types of hyperdialectisms featuring gender and number constraints. Following the survey, the same respondents participated in a focus group discussion. Regression analysis on the scaled ratings revealed that all three types of hyperdialectisms were rejected, although it was especially the older respondents (almost all L1 dialect speakers) who were weary of the incorrect forms. Analysis of the focus group data demonstrated that older respondents are consciously aware of the rules of their dialect grammar, and hate it when these rules are violated. Younger respondents showed almost no meta-grammatical awareness, and admitted to ‘allowing’ the incorrect forms in some contexts because they ‘sound Brabantish’. Identity construction, in other words, is at the heart of hyperdialectal usage. Methodologically, this paper makes a plea for the confrontation of quantitative data – which provide the backbone of analysis – with qualitative data that offer access to motives for, and constraints on grammatical variation.
Peripheries and their internal structure: an empirical analysis of left- and right-peripheral sequences across written English discourse
Authors: Klumm Matthias
Published: September 2024

This article investigates the distribution, linear ordering and functions of sequences of linguistic elements occurring at the left and right peripheries of discourse units across three genres of written English discourse. Based on a corpus of news reports, commentaries and personal narratives, the paper aims to account for discourse-genre-specific preferences in the use of peripheral two-part sequences such as and so, but I think or now though. The data show considerable variation across genres in terms of (i) which formal types of sequences occur at the peripheries, (ii) how peripheral elements are sequentially ordered, and (iii) which discourse-pragmatic functions left- and right-peripheral sequences fulfil in written English discourse. The observed variation in the use of peripheral sequences across news reports, commentaries and personal narratives can be explained by discourse-related factors as well as the specific communicative purposes of each genre. The present article argues for a prototype-anchored conceptualization of the internal structure of discourse units: On the one hand, the left and right peripheries are conceptualized as containing a wide range of – more and less prototypical – linguistic elements (i.e. extra-clausal constituents and adjuncts); on the other hand, the boundary between core and periphery is conceptualized as fuzzy and gradient.
Position-Specific Differences in Speed Profiles Among National Football League Scouting Combine Participants
Authors: Gillen Zachary M.
Published: September 2024

Gillen, ZM. Position-specific differences in speed profiles among NFL scouting combine participants. J Strength Cond Res XX(X): 000–000, 2024—This study examined the relationships between speed profiles and athletic performance measurements from the National Football League (NFL) Scouting Combine, and position-specific differences in speed profiles. Subjects included NFL Scouting Combines participants with valid scores for the 40-yard dash, as well as the 10- and 20-yard splits of the 40-yard dash (n = 2,156). Subjects were divided into the following position groups: defensive backs (DBs, n = 421), defensive linemen (DL, n = 356), linebackers (LBs, n = 261), offensive linemen (OL, n = 354), running backs (RBs, n = 217), tight ends (TEs, n = 122), quarterbacks (QBs, n = 108), and wide receivers (WRs, n = 317). Performance measures included 40-yard dash time (with 10- and 20-yard split times), bench press repetitions to failure, vertical jump height, broad jump distance, pro-agility time, and L-cone drill time. The 40-yard dash and its splits calculated v

max
, τ, and a

max
to reflect speed profiles. One-way analysis of variances examined position-related differences. Pearson’s product moment correlation coefficients examined relationships between performance measures and speed profile variables. Skill positions (DB and WR) had the greatest v

max
and a

max
, and lowest τ, followed by big skill positions (LB, RB, TE, QB), followed by DL, then OL with the lowest v

max
and a

max
, and highest τ. For skill and big skill positions, v

max
, τ, and a

max
exhibited greater relationships with combine measures, whereas OL generally had the lowest relationships. The position-specific differences in this study demonstrate potential areas of strength and weakness for certain positions. This may help guide strength and conditioning coaches desiring to improve position-specific speed and acceleration capabilities for American football players.
Pre- and Postsynaptic MEF2C Promotes Experience-Dependent, Input-Specific Development of Cortical Layer 4 to Layer 2/3 Excitatory Synapses and Regulates Activity-Dependent Expression of Synaptic Cell Adhesion Molecules
Authors: Putman Jennifer N. , Watson Sean D. , Zhang Zhe , Khandelwal Nitin , Kulkarni Ashwinikumar , Gibson Jay R. , Huber Kimberly M.
Published: September 2024

Experience- and activity-dependent transcription is a candidate mechanism to mediate development and refinement of specific cortical circuits. Here, we demonstrate that the activity-dependent transcription factor myocyte enhancer factor 2C (MEF2C) is required in both presynaptic layer (L) 4 and postsynaptic L2/3 mouse (male and female) somatosensory (S1) cortical neurons for development of this specific synaptic connection. While postsynaptic deletion of
Mef2c
weakens L4 synaptic inputs, it has no effect on inputs from local L2/3, contralateral S1, or the ipsilateral frontal/motor cortex. Similarly, homozygous or heterozygous deletion of
Mef2c
in presynaptic L4 neurons weakens L4 to L2/3 excitatory synaptic inputs by decreasing presynaptic release probability. Postsynaptic MEF2C is specifically required during an early postnatal, experience-dependent, period for L4 to L2/3 synapse function, and expression of transcriptionally active MEF2C (MEF2C-VP16) rescues weak L4 to L2/3 synaptic strength in sensory-deprived mice. Together, these results suggest that experience- and/or activity-dependent transcriptional activation of MEF2C promotes development of L4 to L2/3 synapses. Additionally, MEF2C regulates the expression of many pre- and postsynaptic genes in postnatal cortical neurons. Interestingly, MEF2C was necessary for activity-dependent expression of many presynaptic genes, including those that function in transsynaptic adhesion and neurotransmitter release. This work provides mechanistic insight into the experience-dependent development of specific cortical circuits.
Neurons Underlying Aggression-Like Actions That Are Shared by Both Males and Females inDrosophila
Authors: Tao Liangyu , Ayambem Deven , Barranca Victor J. , Bhandawat Vikas
Published: September 2024

Aggression involves both sexually monomorphic and dimorphic actions. How the brain implements these two types of actions is poorly understood. We found that inDrosophila melanogaster, a set of neurons, which we call CL062, previously shown to mediate male aggression also mediate female aggression. These neurons elicit aggression acutely and without the presence of a target. Although the same set of actions is elicited in males and females, the overall behavior is sexually dimorphic. The CL062 neurons do not expressfruitless, a gene required for sexual dimorphism in flies, and expressed by most other neurons important for controlling fly aggression. Connectomic analysis in a female electron microscopy dataset suggests that these neurons have limited connections withfruitlessexpressing neurons that have been shown to be important for aggression and signal to different descending neurons. Thus, CL062 is part of a monomorphic circuit for aggression that functions parallel to the known dimorphic circuits.
Bibliografia czasopisma teologicznego „Elpis” 1999-2023
Authors:   Parafia Prawosławna św. Mikołaja Cudotwórcy w Białymstoku, Polska, Makal Piotr
Published: September 2024

The theological journal "Elpis" has been published continuously since 1999. It is published by the University of Białystok Publishing House. By 2024, 25 volumes of the journal have been published. "Elpis" continues the Orthodox publishing tradition of the Orthodox Theology Studies at the University of Warsaw in the interwar period. In the jubilee year of the establishment of the Department of Orthodox Theology at the University of Białystok, the bibliography of the journal "Elpis" is presented.
International Boarding School with an Eco-technology Architecture Approach in South Jakarta
Authors: Hafuza Rafi , Setiawan Moch Fathoni , Nugradi Didik Nopianto Agung , Santoso Eko Budi
Published: September 2024

Educational innovation is an important factor for educational progress. Unfortunately, the implementation of educational innovation in Indonesia has not run smoothly as expected. This situation requires systemic reformulation by taking into account various factors such as political, economic, social and cultural factors. Judging from the importance of education, the combination of international schools and boarding schools is the right innovation choice in the current era. International Boarding Schools can be a way to create a generation that is advanced, independent, responsible and able to compete in developing science, technology and skills at an international level. By using an international curriculum and combining it with a boarding system in learning practices, it is hoped that the Indonesian generation can achieve a generation that is intelligent, independent and broad-minded. Not only about the educational aspect, International Boarding Schools can also be a solution to overcome traffic jam problems that occur, especially in big cities. With the Boarding system, parents no longer have to pick up and pick up their children to study at school, thereby reducing the quantity of motorized vehicles on the road. The construction of facilities in a city does not always go well and produce good results, many facilities are built which make the quality of the environment worse. Therefore, to reduce negative impacts on the environment, facilities to be built should apply an environmentally friendly design approach to reduce damage to the environment around the building in the short and long term. The international boarding school is planned on a site of 1,154 ha, on Letnan Jendral Soepeno Street, Kebayoran Lama, South Jakarta, Special Capital Region of Jakarta. The facilities at the school include classrooms, laboratories, dormitories and other supporting facilities that follow international school standards.
Fashion and Beauty Center in Semarang City with an Organic Modern Architecture Approach
Authors: Agustina Setya Putri , Rahadini Ari , Prihanto Teguh , Pratiwi Isna
Published: September 2024

As the economy in Indonesia grows, the lifestyle of its people is dynamically changing. There is an increasing interest in fashion and beauty among the population, supported by the tendency of urban Indonesians to follow evolving fashion trends. Clothing (fashion) and beauty are crucial factors in personal appearance, thus creating a demand for facilities that cater to these needs within a single area. Semarang City is part of the mega-urban area known as Kedungsepur (Kendal, Demak, Ungaran, Salatiga, Semarang, and Purwodadi), which is a hub of urban development in Central Java. However, the growth of fashion and beauty in Semarang is uneven, despite the promising potential of the fashion and beauty industries to support local and regional economic growth. Therefore, there is a need for planning a facility that encompasses not only commercial aspects but also educational aspects within one area. The planning of a Fashion and Beauty Center aims to provide facilities to the community of Semarang City to support various activities such as shopping, salons, beauty treatments, fashion training, treatment training, makeup training, art galleries, and fashion shows. The application of a modern organic architectural approach in planning the Fashion and Beauty Center embodies the characteristics of fashion and beauty that are always evolving to be free-spirited, simple, functional, and elegant from year to year, while maintaining a balance with the surrounding environment.
Evaluation of The Flipped Classroom Model on Students' Academic Achievement and Retention in MAN 1 Ambon
Authors: Rumahlewang Emma , Lokollo Lamberthus J. , Lasaiba Mohammad Amin
Published: September 2024

This study evaluates the impact of computer simulation and animation instructional packages in natural sciences on high school student's academic achievement and retention in a flipped classroom setting. Using a quasi-experimental pre-test and post-test design, 30 students used the computer simulation package, and 29 students used the computer animation package. Data were collected via academic achievement and retention tests and analyzed using descriptive statistics and independent sample t-tests. The results showed significant improvements in academic achievement for both groups. The average post-test score increased from 28.52 to 70.35 in the computer simulation group and from 25.74 to 64.23 in the computer animation group. The t-test indicated no significant difference in academic achievement between the two groups (t = 1.98, p = 0.79). Retention scores showed a slight decrease from post-test to retention test but remained high, with average retention scores of 68.74 for the simulation group and 61.15 for the animation group. The t-test also revealed no significant difference in retention between the groups (t = 1.12, p = 0.66). The implications of this study suggest that using educational technology, such as computer simulations and animations, in a flipped classroom setting can significantly enhance students' academic achievement and knowledge retention. It underscores the importance of integrating technology into the educational curriculum to create a more inclusive, interactive, and effective learning environment. Additionally, these findings allow educators to choose the teaching methods that best suit their instructional needs and contexts, whether in resource-limited situations or when teaching complex concepts.
Implementación del aprendizaje activo en la carrera de Derecho de la Universidad de Costa Rica, Sede de Guanacaste: perspectiva docente y estudiantil
Authors: Baltodano Mayorga Jose Daniel
Published: September 2024

This study examines the application of active learning in the Law major of the University of Costa Rica, Guanacaste campus, during 2022. This research has an exploratory scope and follows a qualitative approach. One of its main results reflects the identification of ten types of active methods applied in the courses. Professors consider that this approach contributes to promoting a comprehensive and in-depth learning of the major. It also enables a better link between theory and practice, which encourages the development of subject-specific and soft skills. Students hold a positive view towards using active learning methods in class since they believe them to provide better learning conditions. It can be concluded that the frequent use of active learning methods in Law courses shows a noticeable integration of this approach to the pedagogic culture of the major. Both faculty and students view the educational process as a complex phenomenon integrating concepts, practice, and emotions. Thus, they perceive these methods as ideal teaching instruments. Therefore, implementing active learning in the Law major is aligned with the theoretical principles about this topic as well as responds to the current educational requirements.
Prospectiva de la empleabilidad en educación matemática en la región de influencia de la Sede del Atlántico, Universidad de Costa Rica
Authors: Jiménez Castro Maynor
Published: September 2024

This article analyzes the employability of the Mathematics Teaching major graduates, considering theoretical backgrounds on the “employability construct” and results obtained through research regarding job opportunities in the mathematics teaching field. To achieve this, a qualitative study with the new cohort of graduates from the Bachelor’s and Licentiate Degrees in Mathematics Teaching major on the Atlantic Campus, University of Costa Rica (Guápiles, Turrialba, and Paraíso branches) was carried out with the aim of analyzing different perspectives regarding potential jobs, values, attitudes, current employment situation, and employees’ perceptions about the mathematics teachers’ performance around the country. Finally, outstanding reflections are highlighted about the teaching training, the labor demand in the Costa Rican teaching context, and the difficulties graduates face in finding a job related to their major. The need to align academic training with labor market requirements and enhance job prospects for future mathematics educators in Costa Rica is stressed.
A rare case of uterine arteriovenous malformation masquerading as retained products of conceptus: a case report
Authors: D Katke Rajshree , Pal Sanchari , Gutte Avinash , Nawarange Shubhangi
Published: September 2024

An Arteriovenous malformation (AVM) is essentially an abnormal vascular structural anomalous connection between arteries and veins that bypass the capillaries.1 While they can be found anywhere in the body, uterine AVMs are relatively rare with only about 100 cases having been reported in literature to date. Herein, we describe an atypical presentation and subsequent management of a uterine AVM which initially appeared to resemble products of conceptus. It is important to differentiate between the two conditions since the management of the former differs widely from the latter and involves a specialized unit.
EFECTO DE LA EXPOSICIÓN AL OLEAJE EN EL TAMAÑO Y EL ÍNDICE DE CONDICIÓN DE LOS NEOGASTRÓPODOS EN SANTA MARTA, COLOMBIA
Authors: Rodríguez-Grimón René Oscar , Campos Néstor Hernando , Castro Ítalo Braga
Published: September 2024

La estructura poblacional y condición somática de gastrópodos intermareales puede ser afectada por el grado de exposición al oleaje en litorales rocosos. Se estudió la influencia de exposición a las olas, la temporalidad climática en las tallas y la condición somática de dos especies de neogastrópodos intermareales (Plicopurpura patula y Vasula deltoidea), en diferentes sitios dentro de la franja costera de Santa Marta, Caribe colombiano. Estudio realizado en dos zonas, la Bahía de Santa Marta y el Parque Nacional Natural Tayrona, donde se establecieron 4 estaciones de recolecta. El estudio se extendió entre los años 2015 al 2017 con ocho campañas de muestreo. Se determinaron la talla, peso de las conchas, proporción de bioincrustaciones, índice de condición y un índice de exposición al oleaje. Solo en P. patula se observó una relación directa y significativa entre el nivel de exposición al oleaje y las tallas (p = 0,011, r2 = 0,683). La variación significativa del índice de condición se presentó en V. deltoidea cuando los especímenes recolectados del intermareal superior superaron los valores de los extraídos en el supralitoral hasta dos metros de profundidad. La exposición al oleaje afecta mucho más a la especie P. patula, la cual se encuentra en las zonas supralitoral, presentando mayores tallas en los sitios con mayor exposición al oleaje.
PRIMERA CONTRIBUCIÓN AL CONOCIMIENTO DE LA DIVERSIDAD AMEBAS TECADAS (PROTOZOA RHIZOPODA) EN HUMEDALES DE IBERÁ (CORRIENTES, ARGENTINA)
Authors: Monti Areco Florencia Mariel , Coronel Juan Manuel , Etcheverry Clara
Published: September 2024

El objetivo de este estudio fue presentar una lista de taxones de amebas tecadas de uno de los mayores humedales de América del Sur, el Iberá. Por el rol clave en la estructuración del hábitat en estos ambientes, se examinó la influencia de las macrófitas sobre las comunidades de amebas tecadas. Las muestras de plancton y perifiton fueron tomadas en cuerpos de aguas del Portal Carambola, Iberá (Provincia de Corrientes, Argentina), en julio y diciembre del año 2018. Además, se midieron los parámetros fisicoquímicos del agua. Este estudio confirma la presencia de 17 morfoespecies de amebas tecadas pertenecientes a seis familias, siendo la familia Difflugiidae la que exhibió la mayor diversidad de taxones. Los resultados demostraron que el mayor número de amebas tecadas fueron encontradas en el plancton. En cuanto al índice de constancia, el plancton presentó el mayor número de morfoespecies constantes (41,2 %) y accidentales (35,3 %). Los taxones identificados como constantes en todos los hábitats analizados fueron Arcella megastoma, Difflugia pyriformis, Euglypha acanthophora, Galeripora discoides y Lesquereusia modesta. D. correntina y D. urceolata fueron reportadas únicamente en el plancton y ambas como accidentales. Dado que esta temática ha sido escasamente abordada en la región, los resultados presentados en este estudio representan una contribución significativa al conocimiento de la composición y estructura de las comunidades de amebas tecadas.
Comunicación en las asociaciones simbióticas: mecanismos entre hongos micorrícicos arbusculares, plantas y organismos edáficos
Authors: Watson-Guido William , Rivera-Méndez William
Published: September 2024

Introducción. Los hongos micorrícicos arbusculares (HMA), forman asociaciones simbióticas estrechas con el 90 % de las especies vegetales. Entablan un “diálogo” molecular mediante moléculas infoquímicas y de nutrientes para la regulación de esta asociación mutualista. Objetivo. Recopilar información sobre los mecanismos moleculares implicados en la comunicación entre los HMA, su planta hospedera y otros organismos edáficos. Desarrollo. La simbiosis entre los hongos micorrícicos y las plantas depende de moléculas señalizadoras específicas que permiten el reconocimiento, la señalización y la comunicación, además del contacto físico entre ambos organismos. Se describen los mecanismos de comunicación molecular y de las interacciones biológicas entre los HMA con las plantas en los diferentes tiempos de la interacción, con énfasis en la descripción de genes reguladores, proteínas y moléculas diana conocidas. Además, se describen interacciones moleculares con otros organismos edáficos. Conclusiones. Los mecanismos de comunicación molecular entre hongos micorrícicos y plantas son complejos y aún presentan vacíos de conocimiento que deben de ser superados para comprender a cabalidad la importancia ecológica de los HMA y de las interacciones con otros organismos edáficos y así lograr su aprovechamiento.
Harina de cáscara de cítricos como ingrediente para la industria cárnica
Authors: Velasquez-Rivera Jorge , Díaz-Torres Raúl
Published: September 2024

Introducción. Las frutas cítricas en especial las naranjas (Citrus sinensis) y mandarinas (Citrus reticulata) se encuentran entre las más consumidas a nivel mundial pero su procesamiento industrial genera una enorme cantidad de subproductos, que constituyen una fuente importante de valiosas sustancias bioactivas. Entre los subproductos más abundantes están las cáscaras, que poseen gran cantidad de compuestos con actividad antioxidante, antimicrobiana y fibra. Objetivo. Describir los posibles beneficios del uso de la cáscara de cítricos como fuente de compuestos bioactivos y sus aplicaciones como ingrediente en el desarrollo de carnes y productos cárnicos más saludables por el aporte de fibra y sustancias bioactivas. Desarrollo. En esta recopilación se analizan las principales características de las cáscaras de las frutas cítricas y se hace énfasis en su composición química, propiedades físicas y valor como fuente de compuestos bioactivos, así como los efectos señalados en la literatura científica, sobre su empleo como ingrediente en productos cárnicos. Para ello, se discuten los cambios que se introducen en las características químicas, sensoriales, texturales, de color y durabilidad de los productos cárnicos. Se ha reportado que estos cambios se deben a la presencia de compuestos bioactivos, con características antioxidantes y antimicrobianas como componentes aromatizantes, polifenoles-flavonoides, aceites esenciales, pigmentos, hidratos de carbono y fibras dietéticas y que los mismos pueden ser más o menos benéficos, en dependencia del origen, la concentración empleada y forma de adición. Conclusión. La industrialización de los cítricos produce gran cantidad de subproductos ricos en compuestos bioactivos, con propiedades antioxidantes y antimicrobianas, que constituyen una alternativa viable para desarrollar productos cárnicos más saludables y sostenibles, con propiedades sensoriales adecuadas y mayor vida útil, pero, en cada caso deben considerarse las características propias del sub producto y de la matriz alimentaria donde se desea emplear.
Obtención de plantas de girasol silvestre (Helianthus annuus L.) para un bioensayo con herbicidas
Authors: Cisneros-López Ma. Eugenia , Valdez-Hernández Miguel Ángel , Ortiz-Chairez Flor Elena , Espinosa-Ramirez Martín , Garza-Cedillo Rubén Darío , Galicia-Juarez Marisol
Published: September 2024

Introducción. El girasol silvestre o polocote (Helianthus annuus L.) es la principal maleza anual en el cultivo de sorgo y maíz en el norte de Tamaulipas, México. Existe escasa información sobre esta especie, para realizar bioensayos con herbicidas. Objetivo. Establecer una metodología para la obtención de plántulas del polocote para bioensayos con herbicidas a partir de semilla hasta la multiplicación en vivero. Materiales y métodos. La semilla del polocote se recolectó en enero del 2023, dentro del Campo Experimental del INIFAP, en Río Bravo, Tamaulipas. Despues se realizó la prueba de germinación inicial sobre papel filtro y viabilidad con Tetrazolio, se comprobó latencia por baja germinación (12 %) alta viabilidad (86 %). Se usaron doce tratamientos para romperla por medio de etanol (70 %) y agua (75, 25), como control solo agua, a 5 ºC y 20 ºC sobre papel, filtro, algodón y Peat moss en cajas Petri por siete días y después a (± 25 ºC). Con los resultados anteriores se estableció la fase de vivero con cuatro esquemas con trasplante de semilla pre germinada y dos con siembra directa. Resultados. El mejor tratamiento para romper latencia fue inmersión en agua a 5 ºC, por por siete días sobre algodón con una germinación del 73 %. Los mejores métodos para obtener plantas fueron charolas con plántulas y trasplante en macetas negras con 75 y 50 % de supervivencia, respectivamente. La sombra inhibió el crecimiento de las plantas. La siembra directa, con o sin prehidratación a la semilla fue desfavorable para la germinación y emergencia. Conclusión. La obtención de plántulas de girasol silvestre fue superior cuando la semilla se sometió a pre-tratamiento hídrico y trasplante posterior a charolas o a bolsas.
Efecto de Bacillus megaterium en el cultivo de fresa
Authors: Acurio-Vásconez Ramiro Daniel , García-Bolívar Judith Josefina
Published: September 2024

Introducción. En Ecuador el cultivo de fresa tiene una relevancia tanto económica como social y un crecimiento significativo en los últimos años, sin embargo, es susceptible a diferentes tipos de plagas y patógenos. Objetivo. Evaluar el efecto de Bacillus megaterium en el cultivo de fresa en variables relacionadas con la sanidad y el rendimiento agronómico Materiales y métodos. Se ejecutó el ensayo de campo en la variedad Albion de fresa, de cuatro meses de edad desde la primera cosecha, en la provincia de Pichincha, Ecuador. Se utilizaron las cepas IB6 y AB4 de Bacillus megaterium a concentraciones de 1x109 y 5 x108 ufc/L, comparadas con un testigo químico de captan (3 g/L) y clorotalonil (2 mL/L) como fungicidas y abamectina (0,75 mL/L) y lambdacialotrina (0,3 mL/L) como insecticidas en rotación. Se aplicó un diseño de parcela dividida con evaluaciones en dos tiempos, entre abril y junio de 2023, se evaluó la incidencia e índice de severidad de Botrytis cinerea peso fresco, rendimiento, diámetros y grados Brix de frutos. Resultados. No hubo interacción entre los fatores tratamientos y tiempo, los tiempos evaluados no mostraron diferencia estadística. El factor tratamientos presentó diferencia estadística para variables de sanidad e interés agronómico, la incidencia de B. cinerea en tratamientos biológicos fue la menor con 13 % en promedio, el control de ácaros fue superior a 72,71 % con la cepa IB6 concentración alta, este mismo tratamiento evidenció incrementos significativos en el peso fresco de frutos (13,2 %), diámetros (14 %) y concentración de sólidos solubles (23 %), superiores al testigo. Conclusión. El uso de Bacillus megaterium redujo la incidencia de Botrytis cinerea, fue efectivo contra ácaros y trips, mejoró las variables de peso freso, diámetros y grados Brix de frutos.
Effect of Epigenetic Inhibitors on Adipogenesis in Human Periodontal Ligament Stem Cells
Authors: Montero-Del-Toro Julio A. , Serralta-Interian Angelica A. , Nic-Can Geovanny I. , Rojas-Herrera Rafael , Carrillo-Cocom Leydi M. , Rodas-Junco Beatriz A.
Published: September 2024

Histone H3 lysine 9 acetylation is a crucial epigenetic mark in mesenchymal stem cell differentiation processes like adipogenesis. This study aimed to evaluate the effect of epigenetic inhibitors on adipogenesis in human periodontal ligament stem cells, using histone deacetylase inhibitors such as valproic acid and trichostatin A. The cells were treated independently with 8 mM valproic acid and 100 nM trichostatin A for 72 hours to inhibit class I histone deacetylases. Subsequently, the cells underwent adipogenic induction for 28 days. Morphology and intracellular lipid deposition were analyzed using Oil-Red oil staining. Protein extracts were prepared on days 0 and 28 to analyze histone H3 lysine 9 acetylation levels via Western blot. Our results demonstrated that cells treated with either VPA or TSA showed, on average, a 1.275-fold increase in lipid deposition during the adipogenic process, with no significant differences between the treatments compared to the control group. Further, by day 28, histone H3 lysine 9 acetylation levels were 1.43 times higher in cells treated with valproic acid and 2.52 times higher in those treated with trichostatin A.These findings suggest that the inhibitors could have differential effects on chromatin remodeling in different regions by increasing acetylation, contributing indistinctly to lipid deposition due to the greater expression of genes associated with the adipogenic phenotype.
Urgensi Implementasi Konsep Ekonomi Biru dalam Tata Kelola Sektor Kelautan Indonesia
Authors: Darajati Muhammad Rafi
Published: September 2024

Sebagai sebuah negara kepulauan, maka pembangunan bidang kelautan harus dijadikan arus utama dalam kebijakan pembangunan di Indonesia. Penelitian ini bertujuan untuk menguraikan alasan urgensi penerapan prinsip ekonomi biru dalam pengaturan tata kelola kelautan Indonesia. Hal ini menjadi penting dikarenakan kebijakan Pemerintah hendaknya selalu berorientasi kepada pembangunan kelautan yang berkelanjutan. Penulisan artikel ini menggunakan metode penelitian kualitatif untuk mengukur seberapa besar upaya yang telah dilakukan para pemangku kepentingan sehubungan dengan pengelolaan kelautan yang berbasis ekonomi biru. Hasil penelitian menunjukkan bahwa ekonomi kelautan yang berbasis ekonomi biru dapat menjadi andalan dalam peningkatan pendapatan Indonesia di masa yang akan depan sehingga dapat mewujudkan diri sebagai Poros Maritim Dunia. Oleh karena itu, Pemerintah Indonesia memiliki kesempatan dan kewajiban untuk menata ulang tata kelola kelautan nasional yang selaras dengan alam. Temuan dari hasil penelitian ini berupa strategi langkah kebijakan yang dapat dijalankan, yaitu dengan cara menselaraskan dan mengutuhkan tatanan hukum laut; menguatkan dan mensinergikan kelembagaan dan kerjasama kelautan; mengutuhkan dan mengintegrasikan data dan informasi laut; dan menumbuh kembangkan riset dan teknologi kelautan. Title: The Urgency of Implementing the Blue Economy Concept in Indonesian Marine Governance As an archipelagic state, the development of the marine sector must be prioritized in its development policies in Indonesia.This study aims to elucidate the reasons for the urgency of implementing blue economy principles in the governance of Indonesia’s marine sector. This reason is crucial as government policies should always be oriented towards sustainable marine development. A This article employs qualitative research methods to assess the extent of stakeholders’ efforts in marine management based on the blue economy. The study findings demonstrate that a blue economy-based marine economy can serve as a cornerstone for increasing Indonesia’s future income, thus realizing its vision as the Global Maritime Fulcrum. Therefore, the Indonesian government has the opportunity and responsibility to restructure national marine governance in harmony with nature. The research findings present a strategy of policy steps that can be implemented, including harmonizing and strengthening the legal framework for the seas, strengthening and synergizing marine institutions and cooperation, strengthening and integrating marine data and information, and promoting marine research and technology.