bluuebunny/crossref_metadata_2025 huggingface dataset:
EKSISTENSI HUKUM ISLAM DALAM KONSTITUSI-KONSTITUSI INDONESIA
Authors: Hamsah Yudi
Published: June 2022

Indonesia sebagai Negara hukum sudah termaktub di dalam Undang-undang Dasar 1945 pasal 1 ayat (3) yang berbunyi “ Negara Indonesia adalah Negara Hukum”. Hal tersebut terbukti dengan pluralnya hukum yang berlaku di Indonesia ini yang terdiri dari Hukum Barat, Hukum Islam, sampai dengan Hukum Adat yang merupakan Hukum tertua di Indonesia. Hukum Islam menjadi sumber dari pembentukan Hukum Nasional yang datang disamping hukum-hukum yang lainnya. Hukum Islam yang terus berkembang di tengah-tengah konstitusi Negara Indonesia terkadang mendatangkan pro dan kontra di kalangan politisi, praktisi bahkan masyarakat setemmpat. Beragamnya sumber hukum di Indonesia juga memberikan dampak yang begitu besar terhadap penyelesaian sengketa di lingkungan peradilan Indonesia. Bagi mereka orang muslim menggunakan hukum Islam untuk menyelesaikan sengketa perdatanya sedangkan non muslim menggunakan hukum nasional atau hukum perdata untuk menyelesaikan sengketa perdatanya. Meskipun sudah mempunyai kompetensi masing-masing peradilan terkadang masih ada beberapa peradilan yang menuai pro kontra saat sengketa perdata antara orang muslim dengan orang non muslim. Banyak orang yang memiliki persepsi bahwa hukum nasional yang harus di kedepankan dalam keadaan demikian begitupun sebaliknya hukum Islam yang harus di kedepankan. Hal tersebut menjadi pertanyaan besar tentang bagaimana eksistensi hukum Islam di tengah-tengah konstitusi-konstitusi Indonesia atau sistem hukum nasional Indonesia.
HUBUNGAN KEPEMIMPINAN KEPALA SEKOLAH DENGAN KINERJA GURU DI SMP ISEN MULANG PALANGKA RAYA
Authors: Nibel Hendrowanto , Setiawan Heri , Uda Tonich , Alexandro Rinto
Published: June 2022

Kepemimpinan merupakan salah satu faktor utama dalam kehidupan berorganisasi yang memegang peranan kunci. Karena kepemimpinan seorang pemimpin berperan sebagai pengatur dalam proses kerjasama antara pemimpin dengan individu maupun pemimpin dengan kelompoknya. Kepemimpinan seorang pemimpin (kepala sekolah) akan mampu membedakan antara suatu organisasi dengan organisasi lainnya. Kepemimpinan yang dimiliki oleh pemimpin (kepala sekolah) dalam memimpin suatu organisasi akan mempengaruhi kinerja daripada guru itu. Rumusan Masalah: Apakah ada Hubungan yang signifikan antar kepemimpinan kepala sekolah dengan kinerja guru di SMP Isen Mulang Palangka Raya. Penelitian ini bertujuan: untuk mengetahui ada tidaknya hubungan kepemimpinan kepala sekolah dengan kinerja guru di SMP Isen Mulang Palangka Raya. Jenis penelitian ini adalah penelitian kuantitatif. Teknik pengumpulan data yang digunakan yaitu: observasi, wawancara, dokumentasi dan angket Analisis data melalui: Rumus yang dipergunakan adalah menggunakan Fisher Exact Probability Test. Hasil penelitian: Hasil perhitungan menunjukan dengan menggunakan Hasil 1) uji Friedman, nilai chi-square sebesar 0.077. Nilai signifikansi p-value 0.782. Karena nilai p-value 0.782 lebih besar dari 0.05 maka kesimpulannya adalah tidak terdapat perbedaan respon antara kepemimpinan Kepala Sekolah dengan respon Kinerja Guru. 2) Dan juga menggunakan Kendall's W Test Berdasarkan hasil uji SPSS di atas dapat disimpulkan bahwa variabel Kepemimpinan Kepala Sekolah hanya mempengaruhi variabel Kinerja Guru sebesar 0.05 %. Dilihat dari angka asymp-sig yang lebih besar dari alpha 0.05 maka dapat di simpulkan bahwa Kepemimpinan Kepala Sekolah terhadap kinerja guru sama atau Kepemimpinan Kepala Sekolah Tidak Mempengaruhi Kinerja Guru
Doubly Truncated Power- Hazard Rate Distribution via Generalized Order Statistics
Authors: Khan M. I.
Published: June 2022

The paper highlights the moments characteristics of the doubly truncated power hazard rate distribution via generalized order statistics. The particular cases and several deductions are explained. The characterization result has also deliberated. Additionally, some numerical computations through R software are listed.
Weed Light: An Exploratory Study of Delta-8 THC Conversations on Reddit
Authors: Glen Szczypka , Pepper Jessica K. , Kim Annice
Published: June 2022

Delta-8 tetrahydrocannabinol (THC) is a newly popular cannabinoid that can be purchased easily at gas stations, vape shops, and online retailers in most regions of the United States. The US Food and Drug Administration (FDA) has expressed the need for novel data sources to understand the use of products like Delta-8 and rapidly detect potential safety issues. Using social media platform Reddit, we examined users’ reported experiences with Delta-8. We collected publicly available Reddit posts of Delta-8 from January 2020 through April 2021 using Brandwatch, a commercially available social media listening platform. We identified the names of popular subreddits, trends in post volume, and frequent topic phrases for Delta-8. Approximately 57,913 Reddit posts were collected from 11,333 unique users across 708 subreddits. Most frequently, discussions were about available products, locations for purchase, overall safety and legality, reactions to the product, and general experiences. Given the lack of regulation and testing, questionable legality, and the product’s wide availability at retail and online locations, Delta-8 products should be a concern for health officials. Monitoring social media platforms like Reddit can help FDA achieve its regulatory and consumer protection goals for emerging cannabis products.
Inaplicabilidad por parte del registro automotor de la ratificación de firmas del art. Art. 18 del decreto 1759/72 a las firmas certificadas por escribano público.
Authors: Bepre Esteban , Martínez Ana Telma Leticia
Published: June 2022

I.- Introducción.

II.- La Administración Pública. Principios aplicables. Los principios de legalidad y de razonabilidad.

III.- 1.1- La ratificación de firmas y la violación al principio de legalidad por vulneración del principio de supremacía normativa.

1.2.- La ratificación de firmas y la violación del principio de legalidad por no reconocerse el principio de autencidad de los instrumentos públicos.

1.3. La ratificación de firmas y la violación al principio de legalidad por no reconocerse el principio autenticador de la función notarial que surge de la legislación notarial local.

1.4- La ratificación de firmas.

1.5.- La ratificación de firmas y la violación del principio de legalidad por incorrecta aplicación del Art. 18del Decreto 1759/72 y la violación del principio de legalidad por apartamiento de la normativa registral que impone un obrar distinto.

1.6.- La ratificación de firmas y la violación del principio de legalidad por apartamiento de la normativa registral sobre el trámite de transferencia de dominio.

1.7.- El cotejo, la ratificación de firmas y la violación del principio de legalidad por uso de una técnica de accción vedado por la reglamentación aplicable.

1.8.- Ratificación de firmas y la violación al principio de razonabilidad.

IV.- Fin de la seguridad jurídica.

V.- El rol de las instituciones orgánicas del notariado frente a problemáticas de este tipo.

VI- Conclusiones.
Sistema de preferencias en la constitución o transmisión de los Derechos Reales sobre inmuebles por actos entre vivos en el nuevo CCCN Ley 26994
Authors: Berrotarán José Ignacio
Published: June 2022

I.-Los antecedentes del nuevo sistema de preferencias.

II.- La aparición en sistema argentino de constitución o transmisión de los derechos reales de los registros constitutivos.

III.- La reforma de la Ley 17711 y la registración perfeccionadora de los contratos de derechos reales sobre inmuebles.

IV.- La inscripción “perfeccionadora” de los derechos reales sobre inmuebles en el viejo CC.

V.- La inscripción “perfeccionadora” del derecho real de hipoteca desde los orígenes del CC - Ley 340.

VI.- Un caso sin aclarar en el viejo CC.: Las servidumbres negativas.

VII- El doble sistema de preferencias en el viejo CC.: el primero en la tradición o el primero en la registración.

VIII.- ¿Existió en el viejo CC. un “Jus Preferendi” para derecho personales?

IX.- El sistema de constitución, transmisión y preferencia de los derechos reales en el nuevo CCCN - Ley 2699.

X.- La inscripción declarativa y el requisito de la buena fe para el que recibió primero la posesión de la cosa.

XI.- Conclusiones sobre el actual sistema de preferencias en la adquisición y constitución de derechos reales sobre inmuebles.
Conjuntos inmobiliarios: malls y ciudades empresariales.
Authors: Guerri Fernández María Laura
Published: June 2022

Introducción. Precisiones. Terminológicas. Elementos. Marco legal. Naturaleza jurídica. Análisis del artículo 2075. Conclusiones.
Prólogo
Authors: Piccon Augusto Luis
Published: June 2022

Nuevamente estamos aquí, entregándoles un nuevo volumen de esta Revista, y quisiera contarles que si bien el esfuerzo dei primer número es el mayor, pues hay que abrir un camino, el seguirlo no es menor Este cuarto volumen significa no bajar los brazos, darle continuidad a una labor, cambiando el entusiasmo inicial por una rutina, pero siempre con un objetivo claro. Como veremos más adelante, en un excelente trabajo sobre ética, una buena acción no hace a la virtud, sino que es la repetición de la misma la que lo logra, y donde está la dificultad. En este sentido esperamos poder llegar a ser virtuosos y seguir poniendo a su disposición esta obra que se hace con mucho cariño de este gran equipo.
Conjuntos inmobiliarios en el marco de la situación actual.
Authors: Garay María Adriana
Published: June 2022

I. Introducción.

II. Regulación de los conjuntos inmobiliarios.

III. Cuestiones que plantea la adecuación .

IV. Análisis de distintos supuestos.

V. Nuestra propuesta.
Implicancias notariales y registrales en la adquisición de bienes mediante la estipulación a favor de terceros.
Authors: Suárez Ana Noelia
Published: June 2022

I. Introducción.

II. La cláusula "compra para" en el documento notarial.

III. La cláusula "compra para" ¿es una estipulación a favor de terceros?

IV. Publicidad de la estipulación a favor de terceros.

V. Normativa registral.

VI. La escritura de aceptación de "compra de inmuebles para terceras personas".

VII. La escritura de revocación de la estipulación.

VIII. Conclusiones.

IX. Bibliografía.
Editorial
Authors: Piccon Augusto Luis
Published: June 2022

Nos complace poder presentarles un nuevo volumen de nuestra Revista, y cuando digo nuestra, hablo no solo de los que aportamos trabajos y movilizamos todo lo necesario para su edición e impresión, sino también de ustedes los lectores, que ya le han dado un lugar en su biblioteca, en su computadora. En esta ocasión nos encontraremos con un número que resultará de gran interés para aquel que hace una lectura continua de principio a final, porque contamos con trabajos muy disímiles, siempre con un enfoque o con una brújula que marca el Norte en temas que son de interés para el notario.
Pengaruh Hidroterapi Terhadap Penurunan Tekanan Darah Pada Lansia di UPT Pelayanan Sosial Tresna Werdha Provinsi Riau
Authors: Chairil Chairil , Della Roma
Published: June 2022

Abstract

 

One of the many health problems experienced by the elderly is the cardiovascular system, namely an increase in blood pressure. The 2013 Riskesdas report shows that the prevalence of hypertension in adults in Riau Province is 20.9%, in Pekanbaru City is 18.1%, and The prevalence of hypertension tends to increase with age. For this reason, this service aims to provide an alternative for hypertension sufferers by doing a foot soak using warm water, the method is carried out by measuring the blood pressure of patients next compared to after soaking in warm water with a total of 23 male-19 and female patients 4 results From research and implementation, it is stated that there is a hydrotherapy mechanism that can reduce blood pressure in people with hypertension. Soaking the feet with hot water can heat the whole body, increasing blood circulation to the top and suppressing circulation. Scientifically, warm water has a physiological impact on the body. in the blood vessels where warm water makes blood circulation smooth
Pelatihan Pelatihan dan Pendampingan Sertifikasi Kompetensi untuk Tenaga Kerja Bidang Instalasi Pemanfaatan Tenaga Listrik Tegangan Rendah
Authors: Muhammad Ridha Fauzi  , Eteruddin Hamzah , Situmeang Usaha , Suwitno Suwitno , Yolnasdi Yolnasdi , Nasution Ahmad Kafrawi
Published: June 2022

Untuk bisa bersaing di tingkat global, tenaga kerja harus memiliki sertifikat kompetensi.Tenaga kerja tidak bisa lagi hanya dengan mengandalkan ijazah, sertifikat kursus, dan lain sebagainya. Sertifikat kompetensi merupakan bukti pengakuan tertulis atas kompetensi kerja seseorang pada bidang tertentu melalui uji kompetensi secara sistematis dan obyektif yang dilaksanakan oleh lembaga sertifikasi profesi (LSP) dan telah mendapatkan lisensi dari badan nasional sertifikasi kompetensi (BNSP). Sementara itu banyak tenaga kerja di Provinsi Riau yang belum punya dan belum tahu dengan sertifikat kompetensi tersebut, khususnya di bidang instalasi pemanfaatan tenaga listrik. Oleh karena itu diperlukan pelatihan dan pendampingan untuk mereka. Adapun tujuan dari kegiatan ini adalah untuk melatih dan meningkatkan pemahaman tenaga kerja menghadapi uji sertifikasi kompetensi agar kompeten dan bisa bersaing di bursa kerja. Metode yang digunakan dalam pelaksanaan pengabdian ini adalah pelatihan dan pendampingan dengan tahapan pre-test, pembekalan, observasi, post test, dan wawancara. Kegiatan pengabdian ini diikuti oleh 7 peserta. Selama kegiatan berlangsung terlihat pelatihan dan pendampingan ini telah terlaksana dengan baik. Sedangkan dari hasil penilaian yang dilakukan terdapat 86% peserta memperoleh nilai ≥ 70, artinya 6 dari 7 peserta berhasil kompeten. Ini menunjukkan peningkatan pemahaman peserta terhadap pengetahuan, keterampilan dan sikap  jika dibandingkan dari hasil pre-test sebelumnya.
Analysis of the failure of the propeller shaft of the motor ship "ELAND"
Authors: Girin Stanislav N. , Matveev Yuri I.
Published: June 2022

The article considers an accident associated with the destruction of the tanker "ELAND" propeller shaft , which occurred in Lake Ladoga shortly after the work was completed at one of the shipyards as part of the regular survey. On the basis of the materials provided to the authors as independent experts, the arbitration court showed that the reason for the failure of the propeller shaft was violations of the work technology at the plant. Due to the excessive displacement of the bracket axis  relatively the deadwood, significant normal stresses arose in the shaft material, which caused a low-cycle violation of the fatigue strength. It is shown that the rules of the Russian Maritime Register of Shipping and the Russian River Register do not contain requirements for checking the strength of ship shafts under normal stresses, which, according to the authors, is a drawback of the rules.
Organization of interaction of various modes of transport in the production and transport processes of production and delivery of non-metallic construction materials
Authors: Zhendareva Elena S. , Kadnikova Elena S. , Giunter Alexey V.
Published: June 2022

Production and transport processes for the delivery of non-metallic construction materials begin, as a rule, at flooded or overland quarries, and end at the consumer. The article considers the features of production and transport processes of extraction, transportation, unloading and shipment of non-ferrous building materials of channel mining to adjacent modes of transport on the example of enterprises of the Ob basin. The factors determining the efficiency of interaction of various modes of transport in multimodal transport hubs are revealed. On the example of one of the largest river enterprises of the Ob basin – JSC "Tomsk Shipping Company", the analysis of the operational performance of the fleet, the duration of round trips was carried out, the points with the greatest ship downtime were identified, and the value of specific downtime was calculated based on 1000 tons of transported cargo. The solution of the problem of coordinating the interaction of river and road transport is given on the example of unloading crushed stone in the river port of Nizhnevartovsk, considering the available storage areas.
Riesgo agroclimático para zona cafetera colombiana : Método para regionalizar la variabilidad climática
Authors: Ramírez-Builes Victor Hugo , Peña-Quiñonez Andrés Javier , Jaramillo-Robledo Alvaro , Giraldo-Escobar Julieth Paola , Suárez-Arcila Heverth Eduardo , Duque-Rincón Nelson
Published: June 2022

En el presente trabajo se considera el riesgo como el producto de la amenaza ocasionada por la variabilidad climática y la vulnerabilidad del sistema de producción de café de reducir la productividad por déficit y exceso hídricos. La fuente de variabilidad climática analizada en este estudio es la variabilidad anual ocasionada por los eventos de El Niño y La Niña. La vulnerabilidad se estima a partir del cálculo del Índice de Humedad del Suelo (IHS) en cafetales productivos a partir de la integración de variables edáficas, de cultivo y atmosféricas que permiten definir la relación que existe entre el comportamiento de la humedad del suelo y variables de productividad del cultivo de café. La aplicación de la metodología se realizó para el departamento del Quindío por tener una adecuada cobertura en la red meteorológica y unidades de suelos georeferenciadas. La metodología permite el análisis histórico para fines de regionalización o zonificación y el análisis dinámico para fines de toma de decisiones y ajustes a los sistemas de producción. Como producto final se entrega un sistema en ambiente web que le permite a cada usuario conocer el nivel de riesgo de su sistema de producción.
THE IMPACT OF INSTITUTIONS ON INNOVATION NETWORKS: EMPIRICAL EVIDENCE FROM POLAND
Authors: Godlewska Małgorzata , Banasik Przemysław , Morawska Sylwia
Published: June 2022

Innovation networks may accelerate and improve the innovation process, while institutional pathologies may hamper it. This study employs the Kruskal-Wallis H test and regression analysis to determine if the relationship between institutions and innovation networks does exist among the investigated variables. The purpose of the study was to find out whether cooperation with special local institutions influences the innovative behaviour of local governments manifested by participation in innovation networks or innovation networks based on formal institutions limit institutional pathologies better than informal ones. Current paper presents results of an empirical study conducted through survey among all local governments in Poland. The findings show that previous cooperation with special local institutions influences the innovation behaviour of local governments or innovation networks based on formal rules limit the institutional pathologies of innovation networks better than those based on sanctions, common values, codes of ethics, governance codes or culture. The investigated problem is significant, as properly functioning innovation networks may generate incremental innovations, which may help to solve the contemporary challenges. The practical implications for national regulatory bodies highlight the need for an enforcement mechanism which may support the formalisation of innovation networks.
Compressible Test-field Method and Its Application to Shear Dynamos
Authors: Käpylä Maarit J. , Rheinhardt Matthias , Brandenburg Axel
Published: June 2022

In this study, we present a compressible test-field method (CTFM) for computing α-effect and turbulent magnetic diffusivity tensors, as well as those relevant for the mean ponderomotive force and mass source, applied to the full MHD equations. We describe the theoretical background of the method and compare it to the quasi-kinematic test-field method and to the previously studied variant working in simplified MHD (SMHD). We present several test cases using velocity and magnetic fields of the Roberts geometry and also compare with the imposed-field method. We show that, for moderate imposed-field strengths, the nonlinear CTFM (nCTFM) gives results in agreement with the imposed-field method. A comparison of different flavors of the nCTFM in the shear dynamo case also yields agreement up to equipartition field strengths. Some deviations between the CTFM and SMHD variants exist. As a relevant physical application, we study nonhelically forced shear flows, which exhibit large-scale dynamo action, and present a reanalysis of low-Reynolds-number, moderate shear systems, where we previously ignored the pressure gradient in the momentum equation and found no coherent shear-current effect. Another key difference is that in the earlier study we used magnetic forcing to mimic small-scale dynamo action, while here it is self-consistently driven by purely kinetic forcing. The kinematic CTFM with general validity forms the core of our analysis. We still find no coherent shear-current effect, but do recover strong large-scale dynamo action that, according to our analysis, is driven by incoherent effects.
Quasar Standardization: Overcoming Selection Biases and Redshift Evolution
Authors: Dainotti Maria Giovanna , Bargiacchi Giada , Lenart Aleksander Łukasz , Capozziello Salvatore , Ó Colgáin Eoin , Solomon Rance , Stojkovic Dejan , Sheikh-Jabbari M. M.
Published: June 2022

Quasars (QSOs) are extremely luminous active galactic nuclei currently observed up to redshift z = 7.642. As such, they have the potential to be the next rung of the cosmic distance ladder beyond Type Ia supernovae, if they can reliably be used as cosmological probes. The main issue in adopting QSOs as standard candles (similarly to gamma-ray bursts) is the large intrinsic scatter in the relations between their observed properties. This could be overcome by finding correlations among their observables that are intrinsic to the physics of QSOs and not artifacts of selection biases and/or redshift evolution. The reliability of these correlations should be verified through well-established statistical tests. The correlation between the ultraviolet and X-ray fluxes developed by Risaliti & Lusso is one of the most promising relations. We apply a statistical method to correct this relation for redshift evolution and selection biases. Remarkably, we recover the the same parameters of the slope and the normalization as Risaliti & Lusso. Our results establish the reliability of this relation, which is intrinsic to the QSO properties and not merely an effect of selection biases or redshift evolution. Hence, the possibility to standardize QSOs as cosmological candles, thereby extending the Hubble diagram up to z = 7.54.
Non-LTE Inversion of Prominence Spectroscopic Observations in Hα and Mg ii h&k lines
Authors: Jejčič Sonja , Heinzel Petr , Schmieder Brigitte , Gunár Stanislav , Mein Pierre , Mein Nicole , Ruan Guiping
Published: June 2022

We continued our investigation of the plasma characteristics of a quiescent prominence that occurred on 2017 March 30. The prominence was observed simultaneously by several instruments, including the Interface Region Imaging Spectrograph (IRIS) and the Multichannel Subtractive Double Pass (MSDP) spectrograph operating at the Meudon solar tower. We focused on IRIS Mg ii h&k and MSDP Hα spectra, selecting 55 well-coaligned points within the prominence. We computed an extensive grid of 63,000 isothermal and isobaric 1D-slab prominence models with a non-LTE (i.e., departures from the local thermodynamic equilibrium) radiative transfer code. We then performed a 1.5D spectral inversion searching for an optimal model that best fits five parameters of the observed profiles (observables), namely, the integrated intensity of the Hα and Mg ii k lines, the FWHM of both lines, and the ratio of intensities of the Mg ii k and Mg ii h lines. The latter is sensitive to temperature. Our results show that the prominence is a low-temperature structure, mostly below 10,000 K, with some excursions to higher values (up to 18,000 K) but also rather low temperatures (around 5000 K). The microturbulent velocity is typically low, peaking around 8 km s−1, and electron density values are of the order of 1010 cm−3. The peak effective thickness is 500 km, although the values range up to 5000 km. The studied prominence is rather optically thin in the Hα line and optically thick in the Mg ii h&k lines.
Identity of Zorotypus juninensis Engel, 2000, syn. nov. revealed: it is conspecific with Centrozoros hamiltoni (New, 1978) (Zoraptera, Spiralizoridae)
Authors: Kočárek Petr , Horká Ivona
Published: June 2022

Zorotypus juninensisEngel, 2000, was previously diagnosed based on the external morphology of female and male specimens without description of the male copulatory organ, which is an important character for classification in Zoraptera. Based on a detailed morphological study of theZorotypus juninensisEngel, 2000 type collections deposited in the American Museum of Natural History in New York, and based on the comparison with the holotype male ofCentrozoros hamiltoni(New, 1978), we have determined that these two species are conspecific. We therefore formally synonymizeZorotypus juninensisEngel, 2000,syn. nov.withCentrozoros hamiltoni(New, 1978). Morphological characters and phylogenetic relationships ofCentrozorosKukalova-Peck & Peck, 1993 are also discussed in this report.
Stochastic differential equation with piecewise continuous arguments: Markov property, invariant measure and numerical approximation
Authors: Chen Chuchu , Hong Jialin , Lu Yulan
Published: June 2022

For the stochastic differential equation with piecewise continuous arguments, multiplicative noises and dissipative drift coefficients, we show that the solution at integer time is a Markov chain and admits a unique invariant measure. In order to numerically preserve the invariant measure, we apply the backward Euler method to the equation, and prove that the numerical solution at integer time is also a Markov chain and possesses a unique numerical invariant measure. By establishing several a priori estimations, we present the time-independent weak error analysis for the method via Malliavin calculus, which implies that the numerical invariant measure converges to the original one with weak order 1. Numerical experiments verify the theoretical analysis.
Model of vehicle interactions with autonomous cars and its properties
Authors: Herty Michael , Puppo Gabriella , Visconti Giuseppe
Published: June 2022

We study a hierarchy of models based on kinetic equations for the descriptions of traffic flow in presence of autonomous and human–driven vehicles. The autonomous cars considered in this paper are thought of as vehicles endowed with some degree of autonomous driving which decreases the stochasticity of the drivers' behavior. Compared to the existing literature, we do not model autonomous cars as externally controlled vehicles. We investigate whether this feature is enough to provide a stabilization of traffic instabilities such as stop and go waves. We propose two indicators to quantify traffic instability and we find, with analytical and numerical tools, that traffic instabilities are damped as the penetration rate of the autonomous vehicles increases.
Positivity analysis for the discrete delta fractional differences of the Riemann-Liouville and Liouville-Caputo types
Authors: Mohammed Pshtiwan Othman , Srivastava Hari Mohan , Baleanu Dumitru , Elattar Ehab E. , Hamed Y. S.
Published: June 2022

In this article, we investigate some new positivity and negativity results for some families of discrete delta fractional difference operators. A basic result is an identity which will prove to be a useful tool for establishing the main results. Our first main result considers the positivity and negativity of the discrete delta fractional difference operator of the Riemann-Liouville type under two main conditions. Similar results are then obtained for the discrete delta fractional difference operator of the Liouville-Caputo type. Finally, we provide a specific example in which the chosen function becomes nonincreasing on a time set.
Some coupled fixed point theorems on multiplicative metric spaces with an application
Authors: Hussain Baqir , Rehman Saif Ur , Jaradat Mohammed M.M. , Khan Sami Ullah , Arshad Muhammad
Published: June 2022

This article aims to prove some coupled fixed point (FP) theorems for nonlinear contractive type mapping in multiplicative metric space (MM-space). Our presented work consists of the maximum type and some other expressions in the framework of MM-space. We also provide illustrative examples and an application in support of our generalized results. Our offered results expand and develop a variety of the latest outcomes in the existing literature. Moreover, we present an application of the two Urysohn integral equations to support our work.
Optimal harvesting for a periodic competing system with size structure in a polluted environment
Authors: Zhang Tainian , Luo Zhixue
Published: June 2022

As a renewable resource, biological population not only has direct economic value to people's lives, but also has important ecological and environmental value. This study examines an optimal harvesting problem for a periodic, competing hybrid system of three species that is dependent on size structure in a polluted environment. The existence and uniqueness of the nonnegative solution are proved via an operator theory and fixed point theorem. The necessary optimality conditions are derived by constructing an adjoint system and using the tangent-normal cone technique. The existence of unique optimal control pair is verified by means of the Ekeland variational principle and a feedback form of the optimal policy is presented. The finite difference scheme and the chasing method are used to approximate the nonnegative T-periodic solution of the state system corresponding to a given initial datum. The objective functional represents the total profit obtained from harvesting three species. The results obtained in this work can be extended to a wide variety of fields.
On the crest factor and its relevance in detecting turbulent behaviour in solutions of partial differential equations
Authors: Bartuccelli Michele V , Gentile Guido
Published: June 2022

In this work we investigate the connection between two fundamental features of solutions of partial differential equations (PDEs), namely the crest factor and the length scale associated to each solution. We illustrate how the crest factor of solutions of some linear and non-linear PDEs, including the incompressible two-dimensional Navier-Stokes equations, has the capability for detecting turbulent and non-turbulent behaviour.
Advanced Interactive Mathematical Tasks (DLO) for Moodle
Authors: Marcen Benjamin , Fošner Maja , Knežević Nevena
Published: June 2022

In this paper, we will present the reasons for the implementation of eLearning system and different most often used learning models. The focus will be on mathematics in Moodle (LMS-Learning Management System) and on the possibilities of its use. Especially in the construction of new advanced interactive tasks in the field of derivatives and integrals. The main goal is to motivate students, encourage them to overcome theirs difficulties through an auto-study, giving them more confidence and making students keen on Mathematics. In particular, the idea of doing e-mathematics exercises within Moodle as friendly as possible for all users lecturers and students - will be presented.
500W Circular Coil Parameters Mathematical Design for Wireless Power Transfer with Ferrite Core
Authors: Nadia Nazieha Nanda  , Nur Shahida Midi  , Siti Hajar Yusoff  , Ahmed Samir Abed Badawi
Published: June 2022

The efficiency of wireless pad designs with ferrite cores has been established in several investigations. However, they seldom offered a viable solution to the problem of modifying the ferrite form's geometric shape. The use of a ferrite core in the primary and secondary coils has been suggested by several researchers. The ferrite core design, on the other hand, is still in the works. Using the wrong ferrite core design might result in unnecessary extra weight and higher production costs. The circular coil design in the primary and secondary for wireless power transfer (WPT) in electric vehicles is studied in this research. The suggested coil design is used to develop mathematical design utilizing numerical solutions. Later, using Multisims software, this coil design is produced in simulation. The suggested coil design's power efficiency is examined and contrasted between computed and simulated results. Finally, based on the results of the power efficiency, a definitive discussion is presented.
The Pilgrimage to Sand Hill Road: Venture Capital Investment in Publishing-Related Tech Start-ups
Authors: Thompson John B
Published: June 2022

Many entrepreneurs in the world of tech start-ups seek venture capital funding to establish and grow their businesses, but this can be a process fraught with difficulties and laden with long-term consequences. Most attempts to secure VC funding will fail, and most start-ups that are VC-funded will not succeed. Moreover, start-ups that do secure VC funding will tend to find themselves on a developmental trajectory that is very different from that of many traditional businesses. This paper seeks to shed light on the unique and special relationship between venture capital and tech start-ups by focusing on a particular subset of tech start-ups: those that are related to the book publishing industry. It examines this relationship both from the viewpoint of a well-established venture capitalist in Silicon Valley who funds tech start-ups and from the viewpoint of entrepreneurs who are trying to secure VC funding. By examining this relationship from both points of view, we can understand why some entrepreneurs succeed in raising funds and others don’t. We can also understand why the developmental trajectories of VC-funded start-ups are very different from those of many traditional businesses and we can explain why some VC-funded businesses fail while others, competing in a similar space in seemingly similar conditions, survive and flourish.
Position Paper on the Use of Blockchain to Facilitate Physician Credentialing
Authors: Levien David H. , Swaich Gurtejandeep S.
Published: June 2022

This paper discusses the use of blockchain technology and what blockchain is and how blockchain can be used in healthcare. The paper focuses on the use of blockchain technology and how it will be beneficial for the physician credentialing process which would save thousands of hours of work for the physicians, surgeons, and the stakeholders involved and will make the credentialing process more secure, efficient, easy, and less time consuming. It also includes in-depth details about the functioning of the blockchain process and how it makes the whole process of credentialing easier. It also mentions advantages of using blockchain for the credentialing system and how this advanced technology could be used to transform the credentialing process. The paper also highlights the potential benefits of blockchain and how it compares to the current process of credentialing, which depends upon using outdated technology and is associated with high administrative workload.
Comparative Study on Purification Effect of Three Graphene Photocatalytic Nets on Polluted Water
Authors: Xu P.L. , Zhu M.L. , Zhang J.B. , Jiang H. , Hang Y.L.
Published: June 2022

Water pollution is still an urgent problem to be solved in China, and graphene photocatalytic materials have become a means of water pollution control because of its environmental protection and efficient degradation of pollutants in water. In this study, three kinds of graphene photocatalytic net were selected as experimental materials, and they were easy found on the market, selection of rural domestic wastewater as the experimental water. The experiment lasted for 11 days. The experimental results show that the black graphene photocatalytic net has the highest removal rate of COD, NH3-N and TP in wastewater, which can reach 77.4 %, 97.2 % and 91.2 %, respectively. At the end of the experiment, the water quality can rearch the secondary discharge standard of 'Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant ' (GB18918-2002). The three materials have obvious improvement effect on DO in water, which are up to 54.9(black), 48.7(white) and 45.3 times (nano), respectively. This provides a new idea for sewage treatment.
Electrospinning of Polyaniline (PANi) Nanofibers: Effect of Electrospinning Parameters on the Conductivity of Electrospun Nanofibrous Mats
Authors: Kafiah Feras , Laoui Tahar , Khan Zafarullah , Atieh Muataz Ali
Published: June 2022

In this work, we have developed a new protocol to prepare conductive polyaniline (PANi) nanofibrous mats via an electrospinning process. The newly developed method started with doping pure polyaniline with concentrated sulphuric acid. The doped PANi is then blended with other spinnable polymers such as Polyacrylonitrile (PAN). The prepared blend is then converted into a solid nanofibrous mat using an electrospinning process. Different parameters, such as solution weight fractions, electrospinning voltage, and feed rate, were optimized and their effect on fibre morphology and conductivity were studied. Several measurement techniques were used to assess the properties of the developed mats. The measurements include Field Emission Scanning Electron Microscopy (FESEM), the intrinsic conductivity of PANi fibres and the conductivity of fibrous mats. Results revealed a direct relationship between the average fibre diameter and the morphology and the conductivities of both the fibres and the mats. Doped polyaniline showed higher conductivity compared with the pure one with an increase in average fibre diameters. Blending polyaniline with PAN improved the mat's morphology and affects their conductivities. In addition, electrospinning process parameters such as feed rate and applied voltage showed a major effect on the fibre’s morphology and conductivity.
Effect of Quenching Water Temperature on Mechanical Properties of ZL101A
Authors: Zhang Dian Xi , Chen Jing , Wang Huai Zhi , Chen Yong
Published: June 2022

Taking ZL101A alloy as the research object, the ZL101A alloy test bar was solution treated at 535°C and kept for 5 hours, and then quenched at 25°C, 50°C, 70°C, 90°C water temperature conditions. And then aging the quenched alloy sample at 150°C and heat preservation for 3.5h. After tensile test, Brinell hardness test, using metallographic microscope, scanning electron microscope to observe the metallographic structure, fracture morphology and other methods of analysis, and summarized the changes in the structure and properties of ZL101A alloy under different quenching water temperature conditions. The results show that the elongation, reduction of area, and tensile strength of ZL101A alloy quenched at 70°C are the highest, and the Brinell hardness is the highest when the quenching water temperature is 25°C. Comprehensive practical application, the comprehensive mechanical properties of ZL101A alloy quenched at 70°C are the best.
Progress in the Application of MOFs in the Field of Atmospheric Environment
Authors: Xu Li , Wang Hong Yun , Wei Lai
Published: June 2022

Since its first appearance in 1995, metal-organic framework materials (MOFs) have become a research hotspot in the field of environmental treatment due to its advantages of large specific surface area, high porosity and adjustable pore size, especially in the treatment of dye wastewater and heavy metal wastewater. With the deepening of research, as a kind of crystalline material with porous structure, MOFs have a wide application prospect in the field of air purification materials due to their strong adsorption function. This paper summarizes the types and synthesis methods of MOFs, and reviews the application research progress of MOFs in gas separation, gas storage and particulate matter purification. At present, MOFs still have some problems, such as poor stability, low recycling efficiency, high cost and weak functionalization, etc. In the end of this paper, some research suggestions are put forward to solve these problems.
An Investigation on Nano-Enhanced Phase Change Materials: Carbon-Based Nanoparticles
Authors: Mahmoud Montaser , Ramadan Mohamad , Pullen Keith , Abdelkareem Mohammad Ali , Olabi Abdul Ghani , Naher Sumsun
Published: June 2022

The current research presents an overview of four types of carbon nanoparticles that are: carbon black nano powder, multi-walled carbon nanotube, graphene, and graphite. The aim of this paper is to show the importance of carbon-based nano-enhanced phase change materials (NEPCM). The effect of using different types of nanoparticles at various loading concentrations has been examined. It was found that the effective thermal conductivity can be enhanced by increasing the nanoparticles loading concentration regardless of NEPCM type. However, this may be accompanied by a slower melting process which also depends on the nanoparticle’s density. Thus, the duration of storage is reported as a crucial factor to check the feasibility of using such nanoparticles. The highest reported thermal conductivity enhancement is ~300% considering CaCl2.6H2O as a phase change material with 30 wt.% multi-walled carbon nanotube.
Ultra-Thin Graphene Foam Based Flexible Piezoresistive Pressure Sensors for Robotics
Authors: Douglas Connor I. , Nuñez Carlos Garcia , Caffio Marco , Gibson Des
Published: June 2022

– Over recent year, robotics has made a drastic impact in a variety of different markets. Although having many advantages from, safer workspace to speed and efficiency there are several drawbacks all ranging from their lack of ability to execute functions and tasks easily performed by humans. This is mainly due to their lack of ability to implement touch and haptic feedback. In this work, we show the use and applicability of ultra-thin graphene foam (GRF), with polydimethylsiloxane (PDMS) embedded into and over the structure, as an active layer in piezoresistive based pressure sensors for use in robotic touch sensing applications. It has been demonstrated in this work that thin GRF/PDMS-GRF consisting of a few layers of graphene is able to present sensitivity to pressures within the range of 0 to >100kPa. Although pressure sensitivities are not yet comparable to those of current work, it must be noted that the GRF used in this work is much thinner in comparison, consisting of only several layers of graphene.
Epidural Angiolipoma and Andersson Lesion
Authors: Vijayan Selvin Prabhakar , Gerber Christopher , Basu Anindya , Basu Garga , Mhatre Radhika
Published: June 2022

Spinal angiolipomas (SALs) are very rare benign extradural neoplasms, representing 0.14%–1.2% of all spinal tumors. Andersson lesion is a localized vertebral or disco-vertebral lesion in ankylosing spondylitis. Co-occurrence of these lesions is very rare and has never been reported. We are reporting one such case of a 61-year-old man presented with features of dorsal compressive myelopathy. On magnetic resonance imaging (MRI), he was diagnosed to have a SAL at D6–D9 and Andersson lesion at D7–D8 and L1–L2. He was managed surgically with a long-segment fixation and decompression and gross total excision of the tumor. Diagnosis of a SAL was confirmed in a biopsy, and postoperatively, he showed good clinical improvement. In conclusion, given the rarity of co-occurrence of these pathologies, a strong clinical suspicion is required. MRI and CT scan help in diagnosis. Both these pathologies warrant surgical management. When diagnosed early and managed appropriately, they have a good prognosis.
Meteorological influences on some melliferous plant species: nectar nutritional composition and honey yield in mangrove vegetation zone of Akwa Ibom State, Nigeria
Authors: Uffia I.D. , Akachuku C.O. , Udofia O.E. , Nsien I.B.
Published: June 2022

Meteorological influences on the nutritional composition of the nectar of selected melliferous plant species and impact on honey yield were studied for 36 months in the mangrove vegetation in Akwa Ibom state Nigeria. Nectar of selected melliferous plants was collected randomly for three years (2015-2017) and from the vegetation zone during dry and rainy seasons. Climatic factors such as Maximum Temperature, Minimum Temperature, Solar Radiation (mm), Mean Daily Evaporation (mm), Wind speed (ms-1) Rainfall (mm) and humidity) data of the study area were also recorded from Nigeria Meteorological Agency (NIMET) station in Eket LGA. Samples were taken in the early and later stages of flowering and the plants selected for the study were Helicteres ixora, Musa paradisiaca, and Costus afer. Nectar was extracted from the flowers directly, using a 10 μl capillary tube from the floral cup of 200-3000 flowers of melliferous plants. Finding from this study showed higher concentrations of vitamins and sugar in the nectar of melliferous plant species in the dry season than in raining season suggesting a possible impact of high temperature and radiation on increased nectar production.
Morphometric and hydraulic geometry assessment of a gully in se nigeria
Authors: Udosen, Charles , Ubom, Okon , Etok, Abasi-Ifreke , Saturday, Unyime
Published: June 2022

Gully erosion represents one of the most devastating form of land degradation in the Sedimentary Formations underlying south eastern Nigeria leading to both onsite and off- site adverse effects on the environment. In this paper, a surveyed section of a second-order gully located in Uyo, Akwa Ibom State, SE Nigeria is analyzed. Along the gully, 20 cross-sections were established and measured with a Rover GNSS and the Base GNSS. The sections were located at variable distances, placing them in areas where active erosion was evident. In total, 19 field measurements were carried out, and the geometric characteristics of 19 cross-sections were obtained. Morphometric analyses were carried out in 421m surveyed Udo Inwang segment of the 860m long main gully. The results indicated that Udo Inwang gully was a mature gully, measured gully depth varied from 1.1m to 29m, while the shoulder or top width ranged from 26m to 98m. It is worth noting that the bed width is typically narrow ranging from 4m to 33m wide. The cross-sectional profiles were indicative of U-shape to V- shape, all with very narrow bed width and steeply sloping gully sides, which are feature of gullies developed on very loose and incoherent soils that slumps/collapses on exposure. The total volume of soil lost from the watersheds was 480,376.26m3, which translated to 18,593.64 tons/ha and the average rate of soil loss has appeared to be 476.76 ton/ ha /year. The annual average growth rate of the gully length was 22m/year. Hence, the average growth rate of gullies in the study watershed with 22 m/ year-1 laid under catastrophic or destructive type of gully erosion.
The applique, an ancient decorative expression from the early societies of Cusco, Peru
Authors: López Gori-Tumi Echevarría , Quiñones Luz Marina Monrroy
Published: June 2022

This article focuses on the study of the appliques found in the archaeological site of Marcavalle, an early settlement (1100 - 700 BCE) located at the Huatanay Valley in Cusco, Peru. For this research our sample consisted of the complete collection of appliques recovered during the archaeological work at the site in 2013, on which we practiced a functional classification establishing the structural and formal parameters of this series of artifacts. The results were discussed based on comparative, chronological, and provenance data, to establish propositions for the contextual consideration of the material. We concluded that the applique is a characteristic art expression of the earliest occupation of Cusco and a standard product for ceramic manufacturing and decoration in the southern part of Peru.