bluuebunny/crossref_metadata_2025_split huggingface dataset:
Regresión Lineal para la Identificación del Punto de Máxima Potencia en Microrredes Híbridas Implementado en HYPERSIM
Authors: Lozada Carlos , Panchi David , Sánchez Wilson , Jacho Andrés 
Published: January 2024

El presente trabajo se enfoca en la optimización del seguimiento de máxima potencia (MPPT) en sistemas fotovoltaicos mediante el empleo de un enfoque basado en regresión lineal. El objetivo principal consiste en desarrollar un algoritmo de MPPT que utilice técnicas de regresión lineal para mejorar la precisión en la identificación y seguimiento del punto de máxima potencia. El algoritmo propuesto se desarrolla en el software MATLAB/Simulink, validándose a través de pruebas experimentales. Posteriormente, se amplía la aplicación del algoritmo a una red eléctrica modelada y simulada en el entorno de la herramienta HYPERSIM, este software permitirá abordar de manera más detallada y precisa la dinámica instantánea de las variables eléctricas y de control en sistemas complejos, mediante la variación de variables como temperatura e irradiación.
La contribución innovadora de este trabajo no solo se circunscribe a la mejora de los algoritmos de MPPT, sino que también aborda de manera integral la integración de energías renovables en sistemas eléctricos. La eficacia del algoritmo basado en regresión lineal representa un avance crucial para maximizar la eficiencia y respuesta del control en sistemas fotovoltaicos. La optimización de la conversión de energía solar en electricidad utilizable no solo eleva la rentabilidad y sostenibilidad de estos sistemas, sino que también destaca el papel fundamental que desempeñan en la transición hacia un suministro eléctrico más sostenible.
Perbandingan Kinerja 4 Mesin ATF Charger untuk Proses Flashing pada Transmisi Toyota Yaris Matic
Authors: Wanda Wanda , Koswara Koswara , Wiyono A Djoko 
Published: January 2024

ABSTRACT
This research is an experiment testing several Automatic Transmission Fluid (ATF) charger machines in the Flushing process during oil changes by comparing several ATF machines with the Toyota Yaris automatic transmission hydraulic pump.
By knowing the performance of each of these tools, we can recommend a better and more efficient use for automatic car maintenance. The purpose of this study was to compare the ATF Charger Lounch Cat-501s, ATF Charger brand X1, ATF Charger brand X2 with a Toyota Yaris automatic transmission hydraulic pump. By knowing the performance of each of these tools, we can recommend a better and more efficient use for automatic car maintenance. besides that it also aims to find out the maintenance of the automatic transmission on the Toyota Yaris automatic transmission hydraulic pump. The method in this study uses experimental methods by conducting literature studies, sample preparation, group division, treatment implementation, measurement and observation and measurement of the speed of oil entering the transmission during flashing, data analysis, data interpretation, and report generation. The data collected includes efficiency, output power, generated pressure, costs incurred including maintenance costs. In addition, testing was also carried out to evaluate the performance of the Toyota Yaris automatic transmission hydraulic pump when using each type of ATF Charger machine during Flushing. The results showed that the ATF Brand X1 engine had the fastest performance in the process of changing the engine oil for the transmission of the Toyota Yaris automatic car, which was able to drain 1000 ml in 17.65 seconds, the speed was around 850 rpm (revolutions per minute), with an electric voltage of 12 Volts, as well as the cost of procuring the lowest equipment, which is IDR 1,807,530

Keywords: ATF Charger, Toyota Yaris, Matic
Sistem Absensi Cerdas Menggunakan Open CV Berbasis Pengenalan Wajah
Authors: Zein Afrizal 
Published: January 2024

Abstract

The face is an important part of the human body uniquely identify a person. Using facial characteristics as biometrics, facial recognition systems can be implemented. That the most demanding task in any organization is marking attendance. In the traditional attendance system, students are summoned byteachers and their presence or absence marked accordingly. However, this traditional technique is time consuming and boring. In this project, Open CV is based on face recognition approach has been proposed. This model integrates a camera captures the input image, an algorithm for detecting the face of a input images, encoding and identifying faces, tagging presence in a spreadsheet and convert it to a PDF file. That the training database is created by training the system with faces from authorized students. The cropped image is then saved as a database with their respective labels. The features are extracted using the LBPH algorithm.

Keywords: LBPH, , Attendance, Biometric, Face Recognition
Influence of the Oriented Configuration of the BarChip Fibre Polypropylene to the Ductility Factor of the Reinforced Concrete Beam
Authors: Siregar Daniel RT , Koswara Koswara , Taufik Syahril 
Published: January 2024

Abstract
Bending and shear strength of fiber reinforced polimer concrete beams was studied in this research project. The reinforced concrete beam behaves in brittle structure in the certain reinforcement configuration. BarChip fibre polypropylene as the material for enhancement of the ductility factor is applied to the concrete beam. Three types of BarChip fibre configuration were examined: randomly spreading, placing at the mid-span area, and concentration on the tension zone. The experimental program included five beam specimens. Two of the beams were control specimens in which one was reinforced with no fibre, while the other one did not have any Barchips polypropylene. Each one of the other three specimens was reinforced with one of the above mentioned fibers by 0,4% volumetric ratio. Investigating the following issues for medium-high concrete strength was the goal of this study. In order to determine whether adding 0.4% volumetric ratio of polypropylenes as additional bar reinforcement in beams would provide adequate strength and stiffness properties comparable to reinforcing steel used as minimum bar reinforcement, it was necessary to first assess the effectiveness of each type of oriented fiber configuration on the bending strength, then to look into each beam's bending strength, shear strength, toughness, crack patterns, and near ultimate load crack width. The findings demonstrated that the bending capacity of the beam specimens was raised by all three types of polypropylene configuration more than by the beam reinforced with the fewest amount of bar reinforcement. Additionally, some of the employed fibers may cause failures other than pure shear. It is reccomended to spread the polypropylene within the tension zone of the reinforced concrete beam on the bottom mid span.
Keywords: Fibrous Concrete, Polypropylene, Ductility, Reinforced, Beam
Teknik Self Management Untuk Mengurangi Perilaku Membolos Pada Siswa Kelas X SMK X
Authors: Yuliani Anisa Putri 
Published: January 2024

Perilaku membolos menjadi fenomena yang menghambat proses pembelajaran dan apabila masalah ini tidak segera ditangani secara serius maka dikhawatirkan banyak hal negatif yang muncul sebagai dampak dari perilaku tersebut. Penelitian ini bertujuan untuk mengurangi perilaku membolos siswa dengan menggunakan teknik self management pada siswa kelas X di SMK X. Penelitian ini menggunakan teknik self management yang terdiri dari beberapa tahap, yaitu kontrak diri, pemantauan diri, reinforcment positif, dan reward. Subjek penelitian adalah siswa kelas X yang memiliki jumlah absensi membolos terbanyak di kelas selama bulan Januari hingga Februari Tahun 2023, sehingga di dapatkan 2 siswa sebagai subjek penelitian. Teknik pengumpulan data yang peneliti lakukan adalah dengan cara observasi, wawancara, dan dokumentasi. Hasil penelitian menunjukkan bahwa penerapan teknik self management berhasil mengurangi perilaku membolos siswa kelas X di SMK X.
ТРУПНА ТРАНСПЛАНТАЦІЯ НИРКИ У ПАЦІЄНТА З СИНДРОМОМ АЛЬПОРТА
Authors: Загрійчук Михайло , Бакунець Юрій , Коршунова М. 
Published: January 2024

Вступ. Лікування синдрому Альпорта має синдромологічний та замісний характер. Рання діагностика ураження нирок, постійний нагляд нефролога дають можливість своєчасно призначити хворому замісну ниркову терапію. Наявність умов для реалізації концепції інтегрованого підходу до замісної ниркової терапії дозволяють забезпечити підготовчий етап до трансплантації нирки шляхом проведення гемодіалізу.
Мета. Засвідчити, що трансплантація нирки є єдиним способом збереження життя хворих зі спадковим нефритом на прикладі трансплантації нирки від трупного до- нора у хворого із синдромом Альпорта в термінальній стадії хронічної ниркової недостатності.
Матеріали і методи. Аналіз та обговорення конкретного клінічного випадку; методики – опис, аналіз, реферування.
Результати та їх обговорення. Наведено і проаналізовано конкретний клінічний випадок трансплантації нирки пацієнту з синдромом Альпорта від донора зі смертю головного мозку. Трансплантація нирки є методом вибору та «золотим стандартом» лікування хворих із синдромом Альпорта, який спричинив ХХН 5 ст. Метод іншої замісної ниркової терапії слід розглядати лише як тимчасовий захід в період знаходження пацієнта на листі очікування трансплантаційного центру.
Висновок. Отже, трансплантація нирки пацієнту із синдромом Альпорта від донора зі смертю головного мозку у визначеної категорії пацієнтів є методом вибору, який забезпечує тривалий задовільний посттрансплантаційний період та хорошу якість життя.
Artificial Intelligence and its Role in Forensic Karyotyping: A Systematic Review
Authors: Sachin Kumar Tripathi  , Khyati Rao  , Rajiv Ratan Singh  , Pradeep kumar Yadav  
Published: January 2024

Introduction: One of the most important aspects of forensic investigations and genetic research is forensickaryotyping, which involves analyzing a person’s chromosomes to find genetic anomalies and establishidentification. The development of artificial intelligence (AI) technology offers a chance to improve and automate the forensic karyotyping procedure. This study examines the possible advantages and difficulties of artificial intelligence (AI) in forensic karyotyping. In forensic science, forensic karyotyping is essential for providing an accurate interpretation of genetic data for use in legal and investigative processes. It can offer useful details regarding genetic problems, such as chromosomal abnormalities or mutations, which can help with personal identification, paternity determination, or supplying proof in criminal investigations.Aim: To give a general review of how artificial intelligence is used in forensic karyotyping, evaluate its possible advantages, and address any relevant issues. By being aware of Artificial Intelligence’s promise and limitations in this field, we may set the stage for its efficient integration into forensic practitioner.Methods: A database search we did to start the inquiry turned up 582 documents. There were 216 unique records left after duplicates were eliminated. 232 items were subsequently eliminated as a result of download problems. A final sample of 31 research was chosen from the 134 full-text papers that were evaluated (n=134), with 103 being eliminated owing to quality issues.Result: The use of artificial intelligence (AI) in forensic karyotyping has several advantages, including automated chromosomal analysis, quicker abnormality discovery, and increased uniformity. For a successful application, challenges such as a lack of labelled datasets and ethical issues must be resolved.Concussion: By increasing productivity, precision, and uniformity, artificial intelligence has the potential totransform forensic karyotyping. While there are obstacles, continued study and cooperation amongst several fields might help you get through them. The ethical and appropriate use of AI in forensic karyotyping will improve forensic investigations, boost genetic research, and expand the use of genetics in the legal system.
Projection invariant

t

-Baer and related modules
Authors: Kara Yeliz 
Published: January 2024

UDC 512.5
We investigate the concepts of projection invariant

t

-extending modules and projection invariant

t

-Baer modules, which are generalized to those

π

-extending and

t

-Baer notions, respectively. Several structural properties are obtained and some applications are developed. It is proved that the

π

-

t

-extending modules and

π

-

t

-e. Baer modules are connected with each other. Moreover, we obtain a characterization for

π

-

t

-extending modules relative to the annihilator conditions.
Some Tauberian theorems for the weighted mean method of summability of double sequence
Authors: Totur Ümit , Çanak İbrahim 
Published: January 2024

UDC 517.5
Let

p
=

(

p
j

)

and

q
=

(

q
k

)

be real sequences of nonnegative numbers with the property that

P
m

=

∑

j
=
0

m

p
j

≠
0

and

Q
n

=

∑

k
=
0

n

q
k

≠
0

for all

m

and

n
.

Let

(

P
m

)

and

(

Q
n

)

be regulary varying positive indices. Assume that

(

u

m
n

)

is a double sequence of complex (real) numbers, which is

(

N
¯

,
p
,
q
;
α
,
β
)

summable with a finite limit, where

(
α
,
β
)

=

(
1,1
)

,

(
1,0
)

, or

(
0,1
)

. We present some conditions imposed on the weights under which

(

u

m
n

)

converges in Pringsheim's sense. These results generalize and extend the results obtained by authors in [Comput. Math. Appl., <strong>62</strong>, No. 6, 2609–2615 (2011)].
Smooth rigidity for higher-dimensional contact Anosov flows
Authors: Gogolev Andrey , Hertz Federico Rodriguez 
Published: January 2024

UDC 515.12
We apply the technique of matching functions in the setting of contact Anosov flows satisfying a bunching assumption. This allows us to generalize the 3-dimensional rigidity result of Feldman and Ornstein [Ergodic Theory Dynam. Syst., <strong>7</strong>, No. 1, 49–72 (1987)]. Namely, we show that if two Anosov flow of this kind are

C
0

conjugate, then they are

C
r

conjugate for some

r
∈

[
1,2
)

or even

C
∞

conjugate under certain additional assumptions. This, for example, applies to geodesic flows on compact Riemannian manifolds of

1
/
4

-pinched negative sectional curvature. We can also use our result to recover Hamendstўаdt's marked length spectrum rigidity result for real hyperbolic manifolds.
Inferring Stellar Parameters from Iodine-imprinted Keck/HIRES Spectra with Machine Learning
Authors: Gussman Jude , Rice Malena 
Published: January 2024

Abstract
The properties of exoplanet host stars are traditionally characterized through a detailed forward-modeling analysis of high-resolution spectra. However, many exoplanet radial velocity surveys employ iodine-cell-calibrated spectrographs, such that the vast majority of spectra obtained include an imprinted forest of iodine absorption lines. For surveys that use iodine cells, iodine-free “template” spectra must be separately obtained for precise stellar characterization. These template spectra often require extensive additional observing time to obtain, and they are not always feasible to obtain for faint stars. In this paper, we demonstrate that machine-learning methods can be applied to infer stellar parameters and chemical abundances from iodine-imprinted spectra with high accuracy and precision. The methods presented in this work are broadly applicable to any iodine-cell-calibrated spectrograph. We make publicly available our spectroscopic pipeline, the Cannon HIRES Iodine Pipeline, which derives stellar parameters and 15 chemical abundances from iodine-imprinted spectra of FGK stars and which has been set up for ease of use with Keck/HIRES spectra. Our proof of concept offers an efficient new avenue to rapidly estimate a large number of stellar parameters even in the absence of an iodine-free template spectrum.
Développer l’éthique et les comportements pro-environnementaux en EPS : une méthode mixte de recherche sur une étude interventionnelle de 8 mois
Authors: Urlacher-Schaal Anaëlle , Vors Olivier , Bouyat Marlène , Cante Gilian , Schnitzler Christophe 
Published: January 2024

L’objectif de cet article est de présenter les effets d’un programme interventionnel sur l’évolution des attitudes environnementales des bénéficiaires. Soixante-dix enfants de 10,1±0,6 ans inscrits en zone d’éducation prioritaire REP+ ont été séparés en un groupe test (n=42) et un groupe témoin (n=28). Le groupe test a bénéficié d’un programme d’éducation en plein air combinant Forest School et programme d’éducation à l’aventure au cours de l’année scolaire. Le questionnaire psychométrique de Bogner (2018) a permis de catégoriser les attitudes environnementales des enfants selon trois profils (anthropocentré, neutre, écocentré), et les paragons de chacune des catégories ont été interrogés à trois reprises à l’aide d’entretiens d’autoconfrontation. Les résultats quantitatifs ne montrent pas d’évolution significative durant le programme, cependant les entretiens énactifs suggèrent le renforcement des velléités de protection de la nature dans les trois profils. En revanche, les scores d’appréciation de la nature ont diminué chez les élèves écocentrés et neutres, comme si le contact régulier avec la nature était un défi pour ces élèves qui les amenait à moins l’apprécier. Le programme d’intervention Ecolo’coteaux offre un aperçu des avantages potentiels des programmes d’éducation en plein air pour promouvoir la sensibilisation à l’environnement et favoriser une meilleure compréhension du monde naturel.
Efficacy of pulmonary rehabilitation plus chest physiotherapy versus chest physiotherapy alone in patients with bronchiectasis
Authors: Abdo Asmaa M , Elsaadany Hanan M , El dib Ayman S , Elkholy Amira A , Bahr Hoda M 
Published: January 2024

Abstract

Context
Bronchiectasis is a chronic airway disease characterized by cough, dyspnoea, expectoration, and poor quality of life. Besides medical treatment, regular chest physiotherapy and Pulmonary rehabilitation (PR) may be an effective approach for bronchiectasis.

Aims
To compare the effects of PR and chest physiotherapy with chest physiotherapy alone in bronchiectasis.

Settings and design
This randomized controlled trial observational research enrolled 40 cases with bronchiectasis who were categorized into two groups: (group I); 20 cases received PR and chest physiotherapy in addition to medical treatment, (group II): 20 cases received chest physiotherapy in addition to medical treatment.

Methods and material
Cases were assessed with modified borg scale, 6-minute walk test (6-MWT), arterial blood gases, Spirometry and underwent PR program.

Statistical analysis used
The same group’s quantitative data were compared using the paired Student’s t-test. The frequency and percentage (%) of qualitative characteristics were displayed.

Results
In (group I), there was a statistically notable improvement in modified Borg Scale, 6-MWT, arterial oxygen pressure (PaO2), partial pressure of carbon dioxide (PaCO2), arterial oxygen saturation, FEV1 (actual and predicted %values), FVC (actual and predicted %values), FEV1/FVC actual value, sputum volume and training intensity. In (group II) there was a statistically notable improvement in 6-MWT, PaO2, PaCO2, FEV1 (actual and predicted %values), FVC (actual and predicted %values), FEV1/FVC actual value, and sputum volume. The percentage of improvement in all parameters was significantly higher among group (I).

Conclusions
PR in addition to chest physiotherapy is superior to chest physiotherapy alone in the improvement of symptoms and exercise tolerance in bronchiectasis.
Overexpression of estrogen receptor beta and its prognostic significance among malignant pleural mesothelioma patients
Authors: Helali Mariam , Abdelmotal Ahmed , Gobran Nagy S , El Ghazaly Hesham , El Mahdy Manal , Karim Khaled A 
Published: January 2024

Abstract

Background
The overexpression of estrogen receptor beta (ERβ) and its correlation with prognosis of malignant mesothelioma remains controversial and unexplored. This study aimed at studying ERβ expression in tumour tissue in patients with pleural mesothelioma and its association with clinical and pathological factors and survival analysis.

Material and methods
A prospective cohort study was conducted on patients who were diagnosed with malignant pleural mesothelioma (MPM) in Ain Shams university hospitals, the primary end point was to correlate ERβ overexpression that was analysed by immunohistochemistry (IHC) on paraffin tissue blocks with 1-year overall survival (OS) among MPM patients, the secondary endpoint was to correlate ERβ overexpression with 1-year progression free survival (PFS) and response to platinum-based chemotherapy among MPM patients.

Results
A total 42 MPM patients were included, High ERβ expression (modified Allred score 7-9) was reported in 9.5% of the patients (4 cases), moderate expression (modified Allred score 4-6) was reported in 28.6% of the patients(12 cases), weak and negative expression ( modified Allred score 0-3) was reported in 61% of the patients(26 cases), percent of ERβ positive cases was 69% of the total patients, there was no statistical difference as regard age (p value:0.8), sex(p value:0.4), stage (p value: 0.71), ECOG (p value :0.84) , histological subtype(p value:0.17) and response to platinum based treatment (p value:0.5) across the 3 groups of patients (high, moderate , weak and negative ER beta on tumour tissues).there was no statistically significant difference in OS and PFS for ERβ overexpression.

Conclusion
The overexpression of ERβ was not associated with improved OS or PFS in mesothelioma patients, despite high rate of ERβ positive cases in our analysis, larger sample size would be recommended for more solid conclusions
Assessment of association between interleukin 6 gene variant and its serum level in chronic obstructive pulmonary disease in a sample of Egyptian population
Authors: Ashraf Hala , Ramzi Tarek Abdelazim , Mostafa Noha Baghdadi , Ismaael Mohammed Saied , Ashraf Amr , Abdelaal Amaal Abdo , Mousa Mohamed Shaaban 
Published: January 2024

Abstract

Background
Researches in chronic obstructive pulmonary disease (COPD) had shown signs of inflammation with inflammatory markers that had pivotal role in COPD. some studies proposed that elevated serum interleukin-6 (IL-6) is associated with negative impact on lung functions but up to our knowledge, no studies were performed to correlate the genotypes of IL-6 with COPD patients in Egyptian and middle east populations.

Objectives
To study both the correlation of serum level of IL-6 as well as its gene variant (also known as G174C)) as possible genetic marker for COPD patients in Egyptian patients.

Materials and methods
This study is case-control that enrolled ninety participants; it consisted of two groups. Group I included 45 patients who were diagnosed as stable COPD; Group II included 45 healthy participants. After full clinical and pulmonary functions assessment of all participants, blood samples were collected from both groups for the detection serum level of IL-6 by ELISA and the detection of
IL6
variant by TaqMan Real-Time PCR.

Results
Our study revealed that there was statistically significant increase in serum level of interleukin-6 in COPD patients compared to normal individuals (P value <0.001) and the presence of G/G variant of interleukin 6 gene in COPD patients more than normal subjects with frequency of 84.4% and 53.3% for COPD patients and healthy controls respectively. There was significant correlation between the serum level of interleukin-6 and COPD staging (P value <0.007).

Conclusion
The genotype GG variant of IL6 contributes to the prediction of COPD and may be used as a marker for the prediction of COPD risk in Egyptian population. Serum level of IL6 is markedly higher in COPD patients and can be used as a parameter of correlation with COPD stages.