bluuebunny/crossref_metadata_2025_split huggingface dataset:
Solving Finite-Horizon Discounted Non-Stationary MDPS
Authors: Bouchra El Akraoui , Daoui Cherki 
Published: June 2023

Abstract

Research background
Markov Decision Processes (MDPs) are a powerful framework for modeling many real-world problems with finite-horizons that maximize the reward given a sequence of actions. Although many problems such as investment and financial market problems where the value of a reward decreases exponentially with time, require the introduction of interest rates.

Purpose
This study investigates non-stationary finite-horizon MDPs with a discount factor to account for fluctuations in rewards over time.

Research methodology
To consider the fluctuations of rewards with time, the authors define new nonstationary finite-horizon MDPs with a discount factor. First, the existence of an optimal policy for the proposed finite-horizon discounted MDPs is proven. Next, a new Discounted Backward Induction (DBI) algorithm is presented to find it. To enhance the value of their proposal, a financial model is used as an example of a finite-horizon discounted MDP and an adaptive DBI algorithm is used to solve it.

Results
The proposed method calculates the optimal values of the investment to maximize its expected total return with consideration of the time value of money.

Novelty
No existing studies have before examined dynamic finite-horizon problems that account for temporal fluctuations in rewards.
Testing the Validity of Okun’s Law in Algeria: Is there a difference between Maki’s Cointegration and Quantile’s Regression Results?
Authors: Chenini Moussa , Ayad Hicham , Attouchi Manel , Dahmani Mohamed Driouche 
Published: June 2023

Abstract

Research background
This paper examines the existence of Okun’s law in Algeria over the period of 1970–2020 using both the gap and differences model.

Purpose
The main objective of this paper is to econometrically examine, explore and test the nexus among unemployment rate and economic growth, in order to have a clear explanation about unemployment in Algeria.

Research methodology
Firstly, the Kapetanios unit root test and Maki cointegration test are employed for the gap model to deal with the structural breaks than the estimation of the coefficients in this case, secondly, the quantile regression is used for the differences model; finally, three categories of causality tests are used in this research.

Results
The findings revealed that unemployment rates are not affected by output over the period of study both in the gap and differences model. Hence, Okun’s law is not held in Algeria.

Novelty
The study focused on Okun’s law in different ways. This latter carries out structural breaks in both the unit root and co-integration analysis. On the other hand, the study uses the quantile regression for the first time in the examination of Okun’s law. In the same line of thought, this research introduces an asymmetric analysis in the Maki cointegration and quantile regression.
Incidence of Trichothecenes Deoxynivalenol and T-2 Toxin in Poultry Feed Mixtures
Authors: Harčárová Michaela , Naď Pavel 
Published: June 2023

Abstract
Trichothecenes are among the most important fusariotoxins. According to their chemical structure, they are divided into 4 groups (A – D). In terms of agriculture, trichothecenes of groups A and B are of greatest importance. In this study, the incidence of trichothecenes (deoxynivalenol and T-2 toxin) in mixed feed for broilers and turkeys were determined. Deoxynivalenol was detected in all analysed samples of feed mixture for broilers and turkeys (100 %) at an average concentration of 1.776 ppm; 0.675 ppm, respectively. T-2 toxin was present in 93.8 % of mixed feed for broilers at an average concentration of 36.625 ppb and in all of the tested samples (100 %) of turkey mixed feed (average level 25.899 ppb). The trichothecenes deoxynivalenol and T-2 toxin in feed samples for poultry did not exceed concentrations recommended by legislation.
Distribution of Plant-Parasitic Nematodes in Michigan Corn Fields
Authors: Thapa Sita , Darling Elisabeth , Cole Emilie , Poley Kristin , Quintanilla Marisol 
Published: June 2023

Abstract
Plant-parasitic nematodes (PPNs) can cause substantial economic yield losses to many agronomic crops in the United States. A regional-scale survey was completed across 20 counties to determine PPNs prevalence in Michigan corn and how factors such as soil type, tillage, irrigation, and cropping systems influence their distribution. Ten different major genera of PPNs were identified in Michigan corn fields: Longidorus (needle), Helicotylenchus (spiral), Pratylenchus (lesion), Meloidogyne (root-knot), Heterodera (cyst), Hoplolaimus (lance), Tylenchorhynchus or Merlinius (stunt), Paratylenchus (pin), Criconemella (ring), and Xiphinema (dagger). No significant differences among different categories of tillage for lesion, stunt, or needle nematode prevalence was detected. Lesion nematodes were most prevalent in muck soil, while stunt nematode prevalence was significantly affected by the soil type. Needle nematodes were least abundant in irrigated soils and in contrast, stunt nematodes were higher in non-irrigated soils. Spiral nematodes were the most common PPNs in Michigan corn in all cropping systems. These findings will be helpful in planning future nematode studies in Michigan and in developing and evaluating corn nematode management strategies.
Prognostic significance of the biomarker NT-proBNP in the surgical treatment of aortic stenosis (pilot study)
Authors: Kozlov I. A. , Krichevsky L. A. , Rybakov V. Yu. 
Published: June 2023

The objective was to study the relationship between the preoperative blood levels of the N-terminal segment of B-type natriuretic peptide precursor (NT-proBNP) and ultrasound and thermodilution indicators of cardiac function before and after on-pump surgery for aortic stenosis, as well as to evaluate the prognostic significance of the biomarker in relation to postoperative myocardial dysfunction.Materials and methods. The study involved 27 patients aged 57.7±2.5 years who underwent aortic valve replacement. NT-proBNP level was determined before surgery. The indicators of invasive hemodynamics and transesophageal echocardiography were analyzed at stages: I – after anesthesia induction, II – at the end of surgery. Correlation analysis, logistic regression and ROC analysis were used.Results. The preoperative NT-proBNP level was 2002.0 [540.8–4001.5] pg/ml. At I stage, NT-proBNP correlated with mean pulmonary artery pressure (rho = 0.468; p = 0.014), indices of left ventricular function (rho = –0.509; p = 0.007), end-diastolic and end-systolic volumes (rho = 0.737–0.757; p < 0.0001), as well as ejection fraction (rho = –0.556; p = 0.004) and area contraction fraction (rho = –0.783; p < 0.0001). At II stage, the level of NT-proBNP > 2000 pg/ml was a predictor of the left ventricular area contraction fraction < 50% (OR 1.0011, 95% CI 1.0002–1.0020, p = 0.028, AUC 0.799) , the left ventricular end-systolic area index > 9 cm2/m2 (OR 1.0007, 95% CI 1.0001–1.0013, p = 0.027, AUC 0.886), vasoactive-inotropic score > 10 (OR 1.0006, 95% CI 1.0001–1.0012, p = 0.032, AUC 0.876), duration of sympathomimetic therapy > 24 h (OR 1.0001, 95% CI 1.0000–1.0003, p = 0.049, AUC 0.889).Conclusions. NT-proBNP blood level was increased in 66.7% of patients with aortic stenosis before surgery. Moreover, the biomarker level directly correlates with the mean pulmonary artery pressure, the indices of end-diastolic and end-systolic volumes, end-diastolic and end-systolic areas of the left ventricle, and it inversely correlates with the left ventricular stroke work index, ejection fraction and left ventricular area contraction fraction. The preoperative NT-proBNP level was a predictor of the postoperative decrease to the pathological level of the ejection fractions and left ventricular area contraction, an increase in the left ventricular end-systolic area index, intensive and prolonged sympathomimetic therapy. Myocardial dysfunctions were most pronounced in patients with biomarker levels above 2000 pg/ml.
Perbandingan gambaran pengetahuan mahasiswa kedokteran dan teknik mesin Universitas Tarumanagara tentang penggunaan alat pelindung diri (APD) COVID-19
Authors: Drajat Radhiyya Tsabitah , Limas Peter Ian 
Published: June 2023

Alat Pelindung Diri (APD) merupakan serangkaian peralatan yang digunakan untuk meminimalisir paparan berbagai macam benda asing. APD digunakan agar menjaga keselamatan dan kesehatan dari para pekerja terutama pada bidang kesehatan. Oleh karena itu, tingkat pengetahuan terhadap APD pada masa COVID-19 menjadi satu hal yang penting dan perlu diketahui tidak hanya oleh tenaga kesehatan tetapi juga semua personal yang bersinggungan dengan bidang kesehatan. Tujuan dari studi ini untuk mengetahui gambaran tingkat pengetahuan penggunaan APD pada mahasiswa Fakultas Kedokteran dan Fakultas Teknik Mesin Universitas Tarumanagara selama pandemi COVID-19. Metode yang digunakan adalah deskriptif observasional. Pengambilan data responden melalui kuesioner online selama periode bulan Februari-Juni 2021. Hasil studi didaptakan tingkat pengetahuan penggunaan APD semasa COVID-19 pada 47 mahasiswa Fakultas Kedokteran ialah 13 (27,7%) subjek dalam kategori baik dan 34 (72,3%) subjek dalam kategori cukup cukup, sedangkan pada mahasiswa Fakultas Teknik Mesin didapatkan tingkat pengetahuan penggunaan APD kategori baik semasa COVID-19 pada 9 (19,1%) subjek, 33 (70,2%) subjek dalam kategori cukup dan 5 (10,7%) subjek memiliki tingkat pengetahuan yang kurang. Mayoritas mahasiswa kedua Fakultas memiliki tingkat penegetahuan yang cukup mengenai penggunaan APD.
Pengaruh pengetahuan tentang dismenorea terhadap penanganannya pada mahasiswi kedokteran Universitas Tarumanagara
Authors: Paramitha Yesan Suci , Hidayat Fadil 
Published: June 2023

Pada masa pubertas, menstruasi menjadi tanda kematangan organ seksual. Namun, saat menstruasi biasanya muncul keluhan nyeri yang dapat mengganggu kegiatan sehari-hari (dismenorea). Kejadian dismenorea di Indonesia diperkirakan mencapai 55% di kalangan wanita usia produktif. Pengetahuan mengenai dismenorea pada mahasiswi adalah hal sangat penting sehingga mereka dapat mengetahui dan memiliki perilaku penanganan dismenorea yang baik. Tujuan studi ini untuk mengetahui hubungan antara tingkat pengetahuan terhadap dismenorea dengan perilaku penanganananya. Studi ini bersifat analitik observasional dengan metode cross-sectional. Pengambilan 194 mahasiswi Kedokteran Universitas Tarumangara angkatan 2020-2022 sebagai subjek studi menggunakan teknik consecutive non-random sampling. Pengambilan data pengetahuan dan penanganan dismenorea menggunakan kuesioner yang telah divalidasi. Data yang didapatkan mayoritas subjek memiliki pengetahuan baik (71,6%) dan perilaku positif terhadap penanganan dismenorea (61,9%). Analisis secara statistik didapatkan hubungan bermakna antara tingkat pengetahuan dengan perilaku penanganan dismenorea (p-value = 0,022 dan 0,046). Mahasiswi yang memiliki tingkat pengetahuan yang baik pada umumnya juga memiliki perilaku penanganan yang positif (nilai PRR = 1,43 dan 1,88).
Existential Truth in Dialectical-symbolic Understanding
Authors: Fedorov Sergei 
Published: June 2023

The subject of research in this article is the phenomenon of existential truth. The author relies on the distinction between epistemic and existential truth proposed by D.V. Pivovarov. The latter is the correspondence of knowledge (or being in the case of ontological truth) to the subject-object unity, human being, which is the basis of cognitive activity. The ideas related to the existential understanding of truth in the works of B. Pascal, S. Kierkegaard, M. Unamuno, H. Ortega y Gasset, L. Shestov, N.A. Berdyaev, K. Jaspers, G. Marcel, A. Camus, J.-P. Sartre and M. Heidegger are presented. "Cordiality", subjectivity, vitality, perspectivism, irrationality, creative nature, communication, personality, "rebellion", freedom, "non-concealment" of existential truth are highlighted. With the help of A.F. Losev's dialectical methodology, an attempt is made to comprehend these signs as moments of symbolism of existential truth. The mainstay is the works of A.F. Losev, in which the symbol is understood as a communicative and interpretive expression of a transcendent essence ("the very self"). This expression is a "directly-intuitively" given generality, naturally decomposed into a number of separate singularities, which can be realized in reality and thereby become a "myth" in Losev's understanding. The myth, immanent to personal existence, is intensively experienced by a person, manifests itself in an irrational "miracle". The symbol and myth reveal the considered signs of existential truth and at the same time take into account the objective, functional sides of the truth. From the point of view of the dialectical-symbolic approach, existential truth is the correspondence of knowledge (or being) to a dialectically concrete symbolic reflection of reality, subject-object unity, which is a "directly intuitive" given in immanent personal being. The novelty of the work lies in the application of A.F. Losev's dialectical theory of the symbol to the study of the existential understanding of truth.
Effectiveness of Antenatal Health Education via Mobile Phone Calls Among Women Seeking Antenatal Care Services in Kisii County, Kenya
Authors: Malachi Zillah M. , Kivuti-Bitok Lucy W. , Karani Anna K. , Cheptum Joyce J. 
Published: June 2023

Knowledge of antenatal care is important in reducing maternal mortality and morbidity. Mobile phones have demonstrated an increase in the use of antenatal care services. However, few studies have indicated the effectiveness of health education on antenatal care via mobile phone calls. In this study, we aimed to evaluate the effectiveness of health education on antenatal care provided through mobile phone calls among pregnant women in Kisii County, Kenya. A total of 160 pregnant women up to 26 weeks of gestation were recruited for the study from 16 sub-county health facilities (clusters) in Kisii County. The women were enrolled in their first visit and followed up until delivery. The sub-county health facilities were randomly assigned to either intervention or control arms. The intervention involved giving health education on antenatal care through mobile phone calls. All the participants in both study arms received routine antenatal care. However, those enrolled in the intervention sites additionally received health education through mobile phone calls. The primary outcome measure was antenatal care knowledge scores. Baseline and end-of-study questionnaires were used to collect data. Women in the intervention group scored highly in antenatal care knowledge post-intervention as compared to those in the control group, 7.87 (SE of the difference = 0.68, p-value < 0.001, 95% CI (6.53–9.20). Health education delivered through mobile phone calls has great potential in improving antenatal care knowledge.
Sistem Pakar Diagnosa Penyakit Tanaman Bunga Kertas Zinnia Menggunakan Metode Certainty Factor
Authors: Triatmi Nanik , Akbar Mutaqin 
Published: June 2023

Bunga kertas atau bunga Zinnia adalah tumbuhan semusim miliki Genus Zinnia. Bunga ini berasal dari negara Meksiko, tumbuh sebagai tanaman hias yang tersebar diberbagai belahan dunia, termasuk di wilayah Indonesia. Bunga kertas zinnia sangat terbilang sangat populer di Indonesia, tanaman ini sering digunakan untuk tanaman hias. Namun dalam perawatan tanaman terkadang petani tanaman hias mengalami beberapa kendala akibat penyakit maupun hama tanaman yang menyerang karena masih minim pengetahuan maupun penanganan tentang tanaman tersebut. Karena jika tanaman tidak ditangani dengan cepat akan membuat petani mengalami kerugian. Tujuan membangun sistem pakar diagnosa penyakit tanaman bunga kertas zinnia, dengan adanya sistem pakar tersebut dapat lebih efektif untuk membantu petani dalam menangani penyakit atau hama yang menyerang. Proses inferensi menggunakan metode certainty factor, mencari data gejala lalu memilih parameter sesuai kondisi yang ada, kemudian diproses dengan hasil diagnosa berupa jenis penyakit, hasil persentase, detail penyakit dan saran. Berdasarkan 18 gejala dan 5 jenis penyakit, didapatkan 25 data pengujian sistem, 20 data hasilnya sesuai dan 5 data hasilnya tidak cocok sehingga hasil persentase rata-rata sebesar 80%.
Çevresel Radyoaktivite Çalışmalarında Biyoindikatör Karayosunları
Authors: GÜRSU Gamze , TAŞALTIN Nevin 
Published: June 2023

Çevre kirliliği sorunu şiddetini artırarak devam etmektedir. Bu nedenle biyoindikatör
organizmalar kullanılarak atmosferik element seviyeleri belirlenmeye devam edilmeli ve
kirlilik ölçümleri düzenli olarak yapılmalıdır. Radyoaktif kirliliğin artmasının başlıca nedenleri
madencilik faaliyetleri, termik santraller, baz istasyonları ve fosil yakıtların kaynak olarak
tercih edildiği nükleer santrallerdir. Toplum bireylerinin doğal radyoaktivite dışındaki tüm
nedenlerle maruz kaldıkları radyasyon dozları, radyoaktif maddelerin radyasyon ve çevreye
sızmasını önleyen yönetmeliklerle kontrol edilmektedir. Bu bağlamda, radyonüklidlerin
biyoindikatör organlar tarafından saptanması ve izlenmesi ayrıntılı olarak rapor edilmektedir.
Karayosunları, mevcut çalışmalarda çevresel radyoaktivitenin izlenmesi için sıklıkla biyolojik
göstergeler olarak kullanılmaktadır.
KEBERLANJUTAN SUMBERDAYA IKAN KURISI (Nemipterus japonicus) DI PERAIRAN TELUK BANTEN
Authors: Yuwandana Dwi Putra , Agustina Siska , Hartati Intan Destianis , Retnoningtyas Heidi , Simeon Benaya Meitasari , Darmono Oktavianto Prastyo , Warmia Ayi , Yulianto Irfan 
Published: June 2023

Ikan kurisi merupakan salah satu komoditas ikan demersal yang banyak dimanfaatkan di Perairan Teluk Banten. Tingginya pemanfaatan dapat mempengaruhi keberlanjutan sumberdaya ikan kurisi, sehingga perlunya kajian yang untuk melihat tekanan perikanan dalam runtun waktu (time series) untuk mengetahui kondisi perikanan ikan kurisi secara berkala. Metode yang digunakan adalah studi literatur menggunakan data penelitian yang telah dilakukan pada tahun 2012-2016, yang kemudian digunakan sebagai acuan dalam pembangkitan data untuk dianalisis lebih lanjut. Analisis yang dilakukan yaitu analisis pertumbuhan, spawning potential ratio dan panjang optimal pertama kali tertangkap. Hasil analisis menunjukkan bahwa ikan kurisi betina memiliki nilai parameter pertumbuhan (k) yang lebih tinggi dibandingkan jantan. Kondisi perikanan ikan kurisi yang ada di Perairan Teluk Banten tahun 2016 memiliki kondisi lebih baik dibandingkan tahun sebelumnya dengan nilai F/M = 0,73; nilai E = 0,42, nilai % immature = 11 % dan nilai SPR = 0,49 atau 49 %. Kondisi ini menunjukkan terjadi perbaikan kondisi perikanan 2012-2016 yang semula over exploited menjadi under exploited.
Kata kunci: ikan kurisi, parameter pertumbuhan, SPR, Teluk Banten
Prevalência E Autoconhecimento De Indicadores De Inflamação Sugestivos De Doença Periodontal Em Militares
Authors: Machado Ana Paula Porto Amorim , Silva André Ricardo Araújo da , Silva Licínio Esmeraldo da 
Published: June 2023

O objetivo deste estudo foi identificar a prevalência e o autoconhecimento para indicadores de inflamação sugestivos de doença periodontal em militares de ambos os sexos. Os militares foram recrutados para realização de um censo odontológico para toda a população do Centro de Instrução Almirante Wandenkolk (CIAW) da Marinha do Brasil, totalizando 409 voluntários. Foram formados dois grupos para posterior análise: Grupo 1- contendo exclusivamente mulheres e Grupo 2- contendo exclusivamente homens. Foram realizados 409 exames clínicos e analisados 409 questionários. Os resultados demonstraram que, quanto aos participantes militares, 40,1% foram do sexo feminino e 59,9%, do sexo masculino; 87% faziam uso do fio dental, desses 56% usavam diariamente; 77% apresentaram frequência de escovação de três vezes ao dia ou mais; 74,3% relataram que visitam regularmente o dentista, e a proporção de mulheres que frequenta regularmente o dentista superou significativamente a proporção de homens que o fizeram (I.C. 95%; p < 0,001); 61,6% afirmaram conhecer a doença periodontal. A avaliação profissional verificou a presença de indicadores de inflamação sugestivos de doença periodontal em 45,2% participantes, desses 37% eram do gênero feminino e 63%, do gênero masculino, não sendo observada diferença estatística entre os gêneros (I.C. 95%; p = 0,2248). Concluiu-se que a prevalência de indicadores de inflamação sugestivos de doença periodontal encontrada foi de 45,2%; o autoconhecimento dos militares sobre doença periodontal foi baixo, apenas 19%; dessa forma foi verificada diferença estatística entre o conhecimento das mulheres e dos homens; e observou-se que a maioria dos participantes estava dentro da frequência correta para consulta de retorno ao dentista.
Manifestações Orais E Maxilofaciais Da Covid-19 – Revisão Integrativa Da Literatura
Authors: Reis Nathália Luise Severo , Domingos Nathalia Rosa Nascimento , Brêda Júnior Marcus Antônio , Romão Dayse Andrade 
Published: June 2023

Evidências científicas sugerem que o SARS-CoV-2 está nos tecidos orais na fase inicial da contaminação como principal reservatório viral. Além da cavidade oral ser o principal meio de propagação, também se torna uma localização comum das manifestações clínicas durante o início e a evolução da doença. O objetivo foi avaliar na literatura as manifestações clínicas orais e maxilofaciais decorrentes da contaminação pela Covid-19. Trata-se de uma revisão integrativa da literatura das bases de dados Literatura Latino-Americana e do Caribe em Ciências da Saúde (Lilacs), Scientific Electronic Library Online (Scielo) e BBO Odontologia, de artigos publicados entre os anos de 2019 e 2022 que retratassem a temática do estudo. Inicialmente, realizou-se a busca pelos descritores individualmente, em seguida, foram realizados os cruzamentos utilizando o operador booleano “AND” e, posteriormente, os três descritores foram cruzados em conjunto. Os critérios de inclusão foram: artigos publicados em português, inglês e espanhol, publicados e indexados nas referidas bases de dados, a partir de 2019 – ano do surgimento da Covid-19 e que retratassem a temática em estudo. Os critérios de exclusão foram: artigos publicados antes de 2019, artigos fora das bases de dados escolhidas e que fugissem da temática do estudo. Durante o estudo, 28 artigos foram selecionados a partir de todos os critérios citados. Conclui-se que pacientes contaminados com a Covid-19 tiveram manifestações clínicas orais e maxilofaciais que podem incluir ulcerações, inflamações na orofaringe, edemas retromandibulares, infecções fúngicas, xerostomia, anosmia e ageusia.
The Mediating Role of Emotional Labor in Linking Organizational Learning and Organizational Identification in the Aviation Industry
Authors: ULUDAĞ Duygu , SOYER Melis , MERT Merve 
Published: June 2023

In our study examined the mediating role of emotional labor in the effect of organizational learning on organizational identification. The purpose of the study is to measure the effect of organizational learning on organizational identification and to examine the mediating effect of emotional labor on the dimensions of learning. There are studies showing that organizational learning has a direct effect on organizational identification, but the mediating role of emotional labor has not been investigated.
The population of the study was the employees of ground services in the aviation sector of the Marmara region, 400 employees were reached through random sampling and data were collected through questionnaires. According to the results of the research, organizational learning is effective on organizational identification and emotional labor plays mediating role in this effect. In this context, emotional labor has a mediating role in the effect of managerial commitment, systemic perspective, transparency and experimentation and informational transaction and integration on organizational identification, which are sub-dimensions of organizational learning.