bluuebunny/crossref_metadata_2025_split huggingface dataset:
SPECTRAL ANALYSIS OF NONLINEAR PHASE NOISE ARISING IN COHERENT FIBER-OPTIC TRANSMISSION SYSTEMS OF OFDM SIGNALS
Authors: ВАРДАНЯН В.А. 
Published: August 2024

Рассматривается когерентная волоконно-оптическая система передачи OFDM-сигналов. Исследуется спектр нелинейных фазовых шумов, возникающих в оптическом волокне при нелинейном режиме функционирования оптического тракта. Показано, что спектр нелинейных фазовых шумов состоит из частотных составляющих как на основной частоте канала, так и комбинационных частотах, попадающих в полосу канальных сигналов OFDM. Приведены оценочные формулы для определения помехозащищённости канальных сигналов посредством расчёта Q-фактора в зависимости от параметров системы передачи, в частности, от числа, формата модуляции (QPSK, M-QAM) и мощности канальных сигналов. Приводится пример расчёта Q-фактора для канальных сигналов формата QPSK. Показана необходимость ограничения уровня оптической мощности в волокне для достижения требуемого показателя качества сигналов, например, при передаче многоканального сигнала по волокну длиной 100 км необходимо ограничить уровень мощности до 6,5, 7,4 и 8,8 дБм при использовании методов коррекции ошибок FEC, HD-FEC и SD-FEC соответственно.
A coherent fiber-optic system for transmitting OFDM signals is considered. The spectrum of nonlinear phase noise arising in an optical fiber under nonlinear operating conditions of the optical path is investigated. It is shown that the spectrum of nonlinear phase noise consists of frequency components both at the fundamental frequency of the channel and at the combination frequencies falling within the band of OFDM channel signals. Estimation formulas are given for determining the noise immunity of channel signals by calculating the Q-factor depending on the transmission system parameters, in particular, on the number, modulation format (QPSK, M-QAM), and power of channel signals. An example of calculating the Q-factor for channel signals of the QPSK format is given. The need to limit the optical power level in the fiber is shown in order to achieve the required signal quality indicator; for example, when transmitting a multichannel signal over a 100-km fiber, it is necessary to limit the power level to 6.5, 7.4, and 8.8 dBm when using error correction methods FEC, HD-FEC, and SD-FEC, respectively
Myeloma multiplex: a jelen kihívásai és a korszerű ellátás feltételei II.
Authors: Mór Zoltán , Tóth Ágnes , Alizadeh Hussain , Borbényi Zita , Egyed Miklós , Illés Árpád , Masszi Tamás , Mikala Gábor 
Published: August 2024

A myeloma multiplex kezelése az elmúlt években számottevően változott köszönhetően a diagnosztikai eljárások fejlődésének, az indikációban törzskönyvezett korszerű készítményeknek. A betegség kezelésében tapasztalható folyamatos innováció, a legújabb klinikai vizsgálati eredmények és valós életbeli adatok, továbbá a nemzetközi irányelvek követése ugyanakkor Európa-szerte kihívás elé állítja a finanszírozókat, döntéshozókat.A Myeloma multiplex: a jelen kihívásai és a korszerű ellátás feltételei áttekintő tanulmány elkészítésével célunk egy rendszerszemléletű javaslati anyag kidolgozása volt, amely az ellátás minden területét érintve átfogó értékelést nyújt, kitérve a lehetséges beavatkozási pontokra.Jelen közlemény a myeloma multiplex korszerű kezelési elvei, a Magyarországon elérhető terápiák és kielégítetlen szükséglet továbbá a magyarországi betegellátásban mutatkozó főbb kihívások, szűk keresztmetszetek alapján elemzi a hazai myelomaellátást, amely alapján széles körű javaslatok készültek a magyarországi ellátás fejlesztésére.
Evaluative patterns in the concluding components of expounding essays
Authors: Cheung Lok Ming Eric 
Published: August 2024

Essays that have an expounding or explaining nature are a common type of text in many academic disciplines such as business. While their primary function is to explain the causes or consequences of a phenomenon, they also serve to illustrate the writer’s perspective. In other words, these essays persuade readers to recognise the writer’s arguments, often when they are summarised in the concluding sentence of a paragraph with a final commentary. To illustrate how reasoning and persuasion are undertaken in the concluding components of a paragraph, this paper investigates the expounding essays written by English-as-a-Second-Language associate degree business students in a Hong Kong self-financed tertiary institution. To understand how logical coherence facilitates the writer’s evaluative stance, the present study examines the text structure and its influence on evaluative language choice by combining two analytical frameworks, Rhetorical Structure Theory (RST) and APPRAISAL. The textual focus is the body paragraphs announcing and explaining the factors or effects of a business topic to reveal how a conclusion is reached with an evaluative insight. The findings will demonstrate the common rhetorical relations for reasoning, elaborating and conjoining arguments. The findings will also illustrate the two key RST relations, Evaluation and Interpretation, located at the end of the paragraph. These two relations exhibit differences in the choice of explicit and implicit ATTITUDE resources. This paper concludes with a brief discussion on the pedagogical implications for instructing student writers in the rhetorical strategies for writing concluding components of a paragraph with an evaluative punch, based on the writer’s intention to resonate with his or her assessment throughout the paragraph or to make an alternative personal judgement over the subject matter.
Dreamers and caminantes
Authors: Żelachowska Agata , Marrón-González Susana 
Published: August 2024

Migration remains a recurring yet controversial subject in today’s society. Previous research on press discourse has predominantly focused on migration metaphors from their verbal construction (Santa Ana, 1999; O’Brien, 2003) and the interplay with the visual mode in articles (Catalano & Waugh, 2013; Catalano & Mitchell-McCollough, 2019) or political cartoons (El Refaie, 2003). This genre frequently reflects an unfavorable and discriminatory representation of migrants through the lens of the host country. However, children’s picture books addressing this sensitive issue have received little attention despite their pedagogical value for promoting intercultural, positive attitudes at an early age in an increasingly multicultural and multilingual world. Our study aims to examine the metaphorical construction of migration in Yuyi Morales’ picture book Dreamers, combining the cognitive and social semiotic approaches (Forceville, 2016; Kress & Van Leeuwen, 2006; Painter et al., 2013) to shed light on how both frameworks can complement each other in Critical Discourse Analysis and to demonstrate how children’s picture books can constructively contribute to social change by providing a counterbalancing voice to the dominant narrative on migration.
Enfermedad valvular degenerativa en perros: actualización en su diagnóstico, tratamiento y pronóstico
Authors: Gómez-Duarte Leonardo 
Published: August 2024

SummaryDegenerative valve disease is the main cardiovascular abnormality in dogs. This injury consists of microscopic lesions of the valve, due to mucopolysaccharide infiltration in the extracellular matrix of the leaflets and chordae tendineae, causing regurgitation of blood into the atria. The resulting decrease in cardiac output activates neurohormonal mechanisms that cause adverse ventricular remodeling, often times accompanied of clinical signs and death. An international group of internal-medicine experts has proposed new guidelines for diagnosis and appropriate treatment of the disease. This paper consists of a critical review of that proposal, contextualizing it for the Colombian conditions, according to the experience of the author.Key words: endocardiosis, leaflet mitral, leaflet tricuspid, myxomatosis. Resumen La enfermedad valvular degenerativa es la principal anormalidad cardiovascular de los perros. La lesión en el aparato valvular consiste en una infiltración de mucopolisacaridos en la matriz extracelular de las aletas valvulares y las cuerdas tendinosas, lo que ocasiona una regurgitación de sangre hacia las aurículas. Esta disminución del gasto cardiaco activa mecanismos neurohormonales que originan una remodelación ventricular, causante de la aparición de signos clínicos y la muerte. Un grupo internacional de expertos en medicina interna ha propuesto nuevos lineamientos para su diagnóstico y adecuado tratamiento en cada nivel. Este artículo hace una revisión crítica sobre esta propuesta, contextualizándola en el entorno nacional y la experiencia del autor. Palabras clave: endocardiosis, mixomatosis, válvula mitral, válvula tricúspide. Resumo A doença valvar degenerativa é a principal anormalidade cardiovascular dos cães. A lesão microscópica do aparelho de válvula consiste em acúmulo de mucopolissacarídeos ácidos e outras substâncias no interior dos folhetos e cordas tendíneas. Ela provoca uma insuficiência de sangue para a diminuição do débito cardíaco atrial. Isto resulta na ativação neuro-hormonais que podem levar ao remodelamento cardíaco adverso e insuficiência cardíaca congestiva. Um grupo mundial de especialistas em medicina interna propôs uma nova classificação para orientar o diagnóstico eo tratamento para cada nível. Este documento há uma revisão crítica no contexto nacional e da experiência do autor. Palavras-chave: endocardiosis, mitral, mixomatosa, tricúspide.
Menguak Peran Badan Audit dan Pengendalian Internal pada Tata Kelola Keuangan Gereja
Authors: Simanjuntak Angel Pitaloka , Rusliyawati Rusliyawati 
Published: August 2024

Penelitian ini bertujuan untuk mengevaluasi pelaksanaan audit dan pengendalian internal yang dilaksanakan oleh badan audit gereja Huria Kristen Batak Protestan (HKBP). Penelitian ini menggunakan jenis penelitian deskriptif kualitatif dengan metode studi kasus. Teknik analisis data dilakukan dengan pengumpulan data, reduksi data, penyajian data, dan gambaran hasil penelitian dengan indikator penilaian adalah buku panduan badan audit HKBP. Hasil dari penelitian ini adalah badan audit dalam gereja HKBP Sosok – Batang Tarang sudah berjalan sesuai dengan indikator penilaian buku panduan badan audit HKBP. Pembagian kerja yang terjadi dalam proses pelaksanaan audit juga telah berjalan dengan baik dan pengendalian internal di gereja HKBP Sosok – Batang Tarang diterapkan dengan baik. Peran majelis gereja dan jemaat sudah sangat baik dalam menerapkan pengendalian internal. Penghambat terjadinya pelaksanaan audit adalah seringnya terjadi miskomunikasi dan kurangnya waktu untuk melakukan pengauditan keuangan. Hasil dari penelitian ini memiliki implikasi praktis yaitu penelitian ini dapat dijadikan sebagai percontohan bagi pelaksanaan proses audit dan pengendalian internal yang dilakukan oleh badan audit gereja.
Authors: Nadeak Rizki Kustanti , Rachmawati Farida Nur , Susilo Untung 
Published: August 2024

Ikan sidat (Anguilla bicolor McClelland) merupakan ikan katadromous yang sulit matang gonad dalam kondisi budidaya, sehingga perlu dilakukan penelitian untuk mengkaji nilai IKG, IHS, hubungan antara IKG dan panjang gonad relatif ikan sidat hasil budidaya. Tujuan dari penelitian ini untuk mengetahui nilai IKG, IHS, hubungan antara IKG dan panjang gonad relatif ikan sidat hasil budidaya pada ukuran berbeda dan mengetahui korelasi antara IKG dengan Panjang Gonad Relatif ikan sidat hasil budidaya. Penelitian dilakukan dengan metode survei secara purposive random sampling. Sampel ikan sidat sebanyak 29 ekor diperoleh dari pembudidaya ikan sidat di wilayah Cilacap dikelompokkan berdasarkan fase reproduksinya yaitu yellow eel dan silver eel. Variabel yang diamati ialah panjang gonad relatif sebagai variabel bebas dan IKG sebagai variabel terikat. Parameter yang diukur, yaitu panjang tubuh ikan, bobot tubuh ikan, bobot gonad, panjang gonad, dan bobot hati. Hasil yang didapat pada penelitian ini, rata-rata panjang gonad fase yellow eel 16,93 ± 2,09 cm, sementara fase silver eel 19,93 ± 3,46 cm. Rata-rata IKG yellow eel 1,356±0,992 %, sementara silver eel 2,408±1,053 %. Hasil rata-rata IHS fase yellow eel 1,163±0,201 % dan silver eel sebesar 1,339±0,264 %. Analisis korelasi Spearman’s Rank antara panjang gonad relatif dengan IKG didapatkan nilai signifikansi sebesar 0,167 (P > 0,05). Berdasarkan hasil yang diperoleh dapat disimpulkan bahwa Nilai IKG dan IHS Anguilla bicolor McClelland hasil budidaya pada ukuran berbeda memiliki nilai yang berbeda. Tidak terdapat hubungan yang signifikan antara panjang gonad relatif dengan IKG.
DYNAMICS OF MULTIPLICATION Γ-SEMIGROUP
Authors: Awolola Johnson Aderemi , Ibrahim Musa Adeku 
Published: August 2024

ABSTRACT. This paper gives details on the development of multiplication Γ- semigroups and presents a survey of existing results obtained in the literature. Substantial number of observations due to multiplication semigroups and multiplication Γ-semigroups, and research problems dealing with multiplication Γ-semigroups are also included.Keywords: Multiplication Ring, Multiplication Semigroup, Multiplication Γ-Semigroup.
ABSTRAK. Artikel ini menjelaskan secara rinci perkembangan -semigroup multiplikasi dan menyajikan survey hasil-hasil yang telah ada yang diperoleh dari literatur. Sejumlah penelaahan substansial mengenai semigrup multiplikasi dan Γ- semigroup multiplikasi, dan masalah-masalah penelitian yang berkaitan dengan Γ- semigroup multiplikasi juga disajikan dalam artikel ini.Kata kunci: Ring Multiplikasi, Semigrup Multiplikasi, Γ-Semigrup Multiplikasi.
Cadangan Karbon pada Komunitas Padang Lamun di Pulau Bawean
Authors: Rasong Hanif Setyo , Dewa Andika , Amalina Nur , Ramadhan Raihan , Fitriani Aisyah 
Published: August 2024

Pemanasan global merupakan isu yang sedang hangat diperbincangkan. Berbagai upaya telah dilakukan untuk menanggulangi dampak dari pemanasan global, salah satunya adalah karbon biru. Karbon biru adalah karbon yang diserap dan disimpan di ekosistem pesisir dalam bentuk biomassa. Pulau Bawean merupakan salah satu pulau di Kabupaten Gresik yang memiliki padang lamun. Padang lamun berfungsi sebagai penyerap karbon. Penelitian ini bertujuan untuk mengetahui kandungan karbon pada biomassa dan sedimen lamun. Nilai Kerapatan dan tutupan lamun dihitung menggunakan transek 1x1 m2. Uji kandungan karbon dilakukan dengan metode LOI. Hasil penelitian menunjukkan bahwa terdapat 7 jenis lamun yang ditemukan di perairain Pulau Bawean, yaitu E. acoroides, T., hemprichii, C. rotundata, S. Isoetifolium, H. ovalis, H. spinulosa, dan H. Uninervis. Nilai cadangan karbon yang tersimpang pada biomassa lamun di perairan Pulau Bawean berkisar antara 115,32–810,69 ton C/ha dimana karbon terbanyak tersimpan pada biomassa bagian bawah. Cadangan karbon yang tersimpan pada sedimen memiliki nilai sebesar 1,86-8,37 ton C/ha. Jenis substrat dan kerapatan lamun memiliki pengaruh terhadap karbon yang tersimpan di padang lamun. Hasil penelitian ini membuktikan bahwa padang lamun berperan sebagai penyerap karbon (carbon sink) yang dapat berkontribusi terhadap mitigasi perubahan iklim.

Kata kunci: Bawean, Biomassa, Karbon, Lamun, Sedimen
XLNet-LSTM-CNN for Text Sentiment analysis
Authors: Wang Yiwen , Wu Yonghong 
Published: August 2024

Abstract

Given the burgeoning popularity of social media and online commenting platforms, the significance of text sentiment analysis has been exponentially amplified. Deep learning is being extensively employed for text sentiment analysis, with CNN(Convolutional Neural Network) and LSTM(Long Short-Term Memory Network) showcasing remarkable capabilities. CNNs adeptly extract localized features of text, while LSTMs retain information across longer textual spans. These are often synergistically used for text sentiment classification tasks in tandem with static word vector techniques, for instance, word2vec. We propose a novel text sentiment classification model, designated as XLNet-LSTM-CNN, amalgamating the strengths of CNN and LSTM with the XLNet model. This hybrid model addresses the constraints of static word vector techniques such as word2vec, including their inability to glean deep information about the text or discern the polysemy of words. We further bolster the robustness of our model through data augmentation methods. We evaluated the performance of our proposed XLNet-LSTM-CNN model using three distinct English movie review datasets (IMDB, MR, and SST), comparing it with seven other prevalent neural network models(SVM, CNN, RNN, LSTM, BiLSTM, CNN-LSTM, and CNN-attention-LSTM). Our experimental findings revealed that the XLNet-LSTM-CNN model not only attains superior accuracy but also minimizes the loss rate and augments the model's generalization capacity compared to the competitor models. In summation, our proposed model provides a robust solution for text sentiment classification, holding immense potential for wide-scale application in text sentiment analysis on social media and online commenting platforms.
Investigation doping effects of Copper to enhance photocatalytic performance of Tungsten Trioxide for advanced Tetracycline elimination even under visible light
Authors: Khoa Nguyen Viet , Hanh Nguyen Thi , Huong Nguyen Thuy , Thao Phuong , Pham Thanh-Dong , Ngoc Ha Minh , Cam Nguyen Thi Dieu , Noi Nguyen Van 
Published: August 2024

Abstract

The goal of the research was to improve photocatalytic activity of WO3 by Cu doping to use for tetracycline decomposition. Firstly, the Cu dopant worked as nuclei for the crystallization of WO3 leading to an increase in growth and sizes of formed crystals. However, the incorporation of Cu dopants in the WO3 induced significant deviation into the WO3 lattice inhibiting agglomeration of the WO3 crystals to form large particles. Therefore, the crystal sizes of Cu-WO3 were bigger than the WO3 crystals, however, the Cu-WO3 particles compared to WO3 particles were smaller. By existing in the WO3 lattice, the Cu dopant created an intermediate band to decrease band-gap energy and to boost electron-hole separation of the WO3. Therefore, the synthesized Cu-WO3 effectively generated large electrons and holes for the decomposition of tetracycline under visible light excitation. The study investigated that 3Cu-WO3, in which the Cu doping ratio was 3% mole, showed the highest tetracycline decomposition efficiency (∼79.5%). This was due to the doping of Cu into the WO3 lattice reached a limit, excess that limitation, Cu precursor formed CuO distributing on the WO3 surface to eclipse light reaching the material leading to decrease in electron-hole separation rate due to limited light absorption or decrease in photocatalytic degradation. Finally, the Cu-WO3 exhibited novel stability during the degradation of tetracycline.
Ni-Co doped TiO2 catalyst for efficient photocatalytic degradation of Malachite Green under UV and direct sunlight
Authors: Mhalshekar Krushika , Pawar Vivek , Gaydhane Mrunalini , Sontakke Sharad 
Published: August 2024

Abstract

In the present study combustion synthesized TiO2 nanoparticles were wet impregnated with Ni, Co and Ni-Co, respectively. The photocatalytic performance of synthesized catalysts was evaluated against Malachite Green dye. The synthesized materials were characterized for crystallite size, surface morphology, elemental composition, and band-gap using X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, and ultra-violet diffused reflectance spectroscopy, respectively. The optimum parameters for maximum degradation were found by examining the effects of catalyst loading, initial dye concentration and light intensity. A comparative analysis of Ni-doped, Co-doped, and Ni-Co-doped TiO2 photocatalysts was conducted. The results indicate superior photocatalytic activity of Ni-Co doped TiO2 among the catalysts investigated under UV light. The degradation kinetics was studied and the underlying degradation mechanism is proposed with the help of LC-MS analysis. Furthermore, a comparative study on the degradation under solar radiation using Co-Ni/TiO2 was conducted.
Forecasting Carbon Emissions from Planting Industry in China Based on BO-LightGBM and SHAP
Authors: Wu Zhan , Wang Chunxiao , Cha Sina 
Published: August 2024

Abstract

In order to address the carbon emissions generated by the plantation industry in China, this study used panel data from 30 provinces between 2012 and 2022 to predict and analyse the carbon emissions from the plantation industry through the LightGBM algorithm and SHAP. In addition, the hyper-parameters of the LightGBM regression model were optimised through a Bayesian optimisation algorithm and a five-fold cross-validation was applied to check the robustness of the machine learning regression model results. Finally, the SHAP model was used to analyse in depth the key factors affecting carbon emissions in the plantation industry and to explore ways to promote carbon emission reduction in China's plantation industry. The results show that agriculture-related financial expenditure, the number of agricultural high-tech enterprises and the number of rural professional cooperatives have negative effects and non-linear characteristics on carbon emissions from China's plantation industry. The LightGBM regression prediction model optimised by Bayesian algorithm outperforms the benchmark machine learning algorithm, and the R2 mean value of the five-fold cross-validation is 0.982. The results of this study can provide scientific basis and technical support for promoting the sustainable development of Chinese agriculture.
COVID-19 vaccination atlas: an integrative systems vaccinology approach
Authors: Cabral-Miranda Gustavo , Prates-Syed Wasim , Fonseca Dennyson , Pour Shahab , Schimke Lena , Lira Aline , Côrtes Nelson , Silva Jaqueline , Carvalho Evelyn , Filgueiras Igor , Vinces Tania , Chaves Lorena , Wunderlich Gerhard , Durães-Carvalho Ricardo , Câmara Niels Olsen Saraiva , Dias Haroldo , Ochs Hans , Krieger Jose , Nakaya Helder , Cabral-Marques Otavio 
Published: August 2024

Abstract

The COVID-19 vaccinations have played a significant role in controlling the pandemic. To elucidate their impact on the immune system, a COVID-19 vaccination atlas was developed through an integrative systems vaccinology approach. The atlas includes both healthy individuals and those infected with or without prior vaccination, and covers the administration of five vaccines in different regimens: Covilo®, Zifivax®, Vaxzebria® or Covishield®, Spikevax®, and Comirnaty®. Critical markers were identified to discriminate the different types of vaccines and infection, in which infection was associated with GATA3, ZNF3, KMT2A, ASXL1, SP100, and GZMM, and vaccine types were marked by ITGAM, ACTG1, LGALS3, and STAT5B. Additionally, the immunological signatures of heterologous vaccination and infection were described, and it was also shown how a full vaccination regimen markedly limited the shift of immune responses during natural infection, thereby constraining disease progression. Finally, the common transcripts shared across COVID-19 vaccines and vaccines against other pathogens were described.