bluuebunny/crossref_metadata_2025 huggingface dataset:
La Beatriz de Dante: sujeto poético y guía filosófica
Authors: Ibarra-Chávez Fernando
Published: March 2022

Dante belonged to a poets group known as Dolce stil novo, based on the courtly love guidelines. Throughout his work we observe that the courtly ideals are spared to make way for a philosophy of love closely linked to the Christianism. From Vida nueva and all through the Comedia, Beatriz comes along with Dante, firstly, as a divinized human presence and, once in the Heaven, as a philosophical voice, specialised in theology.
Molecular Mechanism of Iron Transport Systems in Vibrio
Authors: Pramanik Avijit , Vibhuti Raj Kamal
Published: March 2022

The ability to acquire iron from the environment is often an important virulence factor for pathogenic bacteria and Vibrios are no exception to this. Vibrios are reported mainly from marine habitats and most of the species are pathogenic. Among those, the pathogenic vibrios eg. V cholerae, V. parahaemolyticus, V. vulnificus causes foodborne illnesses. Vibrios are capable of producing all different classes of siderophores like hydroxamate (aerobactin), catecholate (vibriobactin, fluvibactin), carboxylate (vibrioferrin), and amphiphilic (amphibactin). Every different species of vibrios are capable of utilizing some endogenous or xenosiderophores. Being Gram-negative bacteria, Vibrios import iron siderophore via TonB dependent transport system and unlike other Gamma proteobacteria these usually possess two or even three partially redundant TonB systems for iron siderophore transport. Other than selected few iron siderophores, most pathogenic Vibrios are known to be able to utilize heme as the sole iron source, while some species are capable of importing free iron from the environment. As per the present knowledge, the spectrum of iron compound transport and utilization in Vibrios is better understood than the siderophore biosynthetic capability of individual species.
Development of Low-calorie Functional Yoghurt by Incorporating Mannitol Producing Lactic Acid Bacteria (Leuconostoc pseudomesenteroides) in the Standard Yoghurt Culture
Authors: Saleena Lejaniya Abdul Kalam , Chandran Deepak , Rayirath Geetha , Shanavas Arjun , Rajalingam Sureshkumar , Vishvanathan Marthandan , Sharun Khan , Dhama Kuldeep
Published: March 2022

As calorie-consciousness becomes a worldwide phenomenon, demand for low-calorie sweeteners is increasing. Compared to other sugars, the reduced calorific value of mannitol (1.6 kilocalories per gram) finds its application as a sweetener in low-calorie foods. The present study was conducted to develop low-calorie yoghurt by adding lactic acid bacteria (LAB) having significant mannitol production potential. Leuconostoc pseudomesenteroides IMAU:11666 was incorporated to standard yoghurt culture as adjunct culture. As mannitol is a food-grade sweetener with Food and Drug Administration (FDA) endorsement, the newly identified LAB strain can be used to develop low-calorie dairy products with beneficial effects. Side effects of other artificial sweeteners can also be reduced. Significantly high (p≤0.05) mannitol content was observed in functional yoghurt samples T1 (12.27 ± 0.18 g/l) and T2 (14.13 ± 0.30 g/l) with Leuconostoc pseudomesenteroides when compared to control samples. The calorific value obtained for yoghurt samples viz., C1, C2, T1, and T2 (86, 95, 98, and 92 kcal/100g, respectively) was less than control yoghurt C (99 kcal/100 gm). Microbial and chemical quality parameters of the functional yoghurt were in the safe and acceptable zone. On sensory evaluation of yoghurt samples, significantly higher overall and flavor scores were observed for sample T2 with Leuconostoc pseudomesenteroides.
Assessment of strength and Durability of Geo-Polymer Concrete under Acidic Conditions
Authors: Surekha Kandavalli , Rani P. Deepika
Published: March 2022

Abstract: The degradation of concrete by acid attack has been a major problem which needs to be addressed with the utmost concern. This acid attack is primarily due to acid rain in low concentrations. This attack depends upon both type of the acid and the concentration of the acid and the vulnerability of concrete. In general the Geo-polymer concrete results obtained from the reaction of a source material i.e. high in silica, alumina and with alkaline liquid. The word geo-polymer was coined by Davidovit’s. Geo-polymer substances lately described as being acid resistant. This present paper studies the experimental investigation data on the Behavior of fly-ash based geo-polymer concretes replaced in chemical solutions for up to four weeks. The fly-ash deployed geo-polymer concrete was at first restored (cured) for 24 hours at 60°C. And also the attained results are comparison with the conventional concretes replaced to 5% acid solutions for up to four weeks. Of The attained compressive strength of geo-polymer concretes and conventional concretes cubes of 150-mm @ an age of 4 weeks are 31.9MPa and 48.4MPa. At first concrete cubes were restored for a period of 4 weeks and after cubes were submerged in chemical solutions, After immersion in chemical solutions, samples were tested at an age of 1week, 2 weeks and 4 weeks. In this work compressive strength and the weight loss reduction were determined. In this experimental investigation three types of chemical solutions are utilized that are HCl, H2SO4 and MgSO4. The test results shows that the Geo-polymer concrete is more resistant to acid and having low loss of weight and compressive strength when compared to conventional concrete Keywords: Geo-polymer Concrete, Fly Ash, Compressive Strength, Acid Attack.
Indetifying Vaccinated People System Using Cloud
Authors: Raj Ankesh , Tajammul Dr Mohammed
Published: March 2022

Abstract: In the Covid situation many Colleges, Company, Hospital and university have only allowing student who got vaccination as by the rule of govt of India but to check all the student one by one with their covid vaccination will take a lot of time as it will take more than two or three staff. so, Our project is to help the college by giving then automated status weather the student got vaccinated or not Web app will be used by the institutes to get the information about Students or Employees vaccination status Students or Employees have to enter their name, select department or enter department id, put phone number, select 1st or 2nd dose of vaccination. Then they have to upload the vaccination certificate. Then it will ask them to upload a recent photo of theirs without mask. We can also ask them few questions about their health status in past 1 month. Abstract. (Abstract) Keywords: Facial Recognition, PCA, LDA, Aws services,
Rule-based Disease Classification using Text Mining on Symptoms Extraction from Electronic Medical Records in Indonesian
Authors: Sangaji Alfonsus Haryo , Pamungkas Yuri , Nugroho Supeno Mardi Susiki , Wibawa Adhi Dharma
Published: March 2022

Recently, electronic medical record (EMR) has become the source of many insights for clinicians and hospital management. EMR stores much important information and new knowledge regarding many aspects for hospital and clinician competitive advantage. It is valuable not only for mining data patterns saved in it regarding the patient symptoms, medication, and treatment, but also it is the box deposit of many new strategies and future trends in the medical world. However, EMR remains a challenge for many clinicians because of its unstructured form. Information extraction helps in finding valuable information in unstructured data. In this paper, information on disease symptoms in the form of text data is the focus of this study. Only the highest prevalence rate of diseases in Indonesia, such as tuberculosis, malignant neoplasm, diabetes mellitus, hypertensive, and renal failure, are analyzed. Pre-processing techniques such as data cleansing and correction play a significant role in obtaining the features. Since the amount of data is imbalanced, SMOTE technique is implemented to overcome this condition. The process of extracting symptoms from EMR data uses a rule-based algorithm. Two algorithms were implemented to classify the disease based on the features, namely SVM and Random Forest. The result showed that the rule-based symptoms extraction works well in extracting valuable information from the unstructured EMR. The classification performance on all algorithms with accuracy in SVM 78% and RF 89%.
Accessibility Analysis of Websites of Provincial Governments in Indonesia
Authors: SetyaningNastiti Vinna Rahmayanti , Deastu Amelia , Marthasari Gita Indah
Published: March 2022

Web accessibility means that people with disabilities can use, navigate, and interact with the website. The World Wide Web Consortium (W3C) has provided important guidelines on web accessibility known as the Web Content Accessible Guidelines (WCAG). The Indonesian government encourages the use of new media, namely website, via Presidential Instruction number 3 of 2003 concerning the National Policy and Strategy for e-government development, which mandates every government agency to build a website. In the previous study, the tools used had limitations and were unable to complete the websites evaluation. Therefore, in this study, WCAG 2.0 standard was applied to analyze the websites of provincial governments in Indonesia. Two accessibility evaluation tools were employed, namely TAW and aXe. In addition, for data analysis and interpretation, descriptive statistics and normality tests were applied. The results showed that the most common violation was found in perceivable principle. It was expected that the findings of this study could provide insight and recommendation for web developers working on provincial government website in Indonesia.
Teatro contra o Estado
Authors: Friques Manoel Silvestre
Published: March 2022

Neste ensaio, refletimos sobre a clivagem epistemológica que separa as teatralidades amefricanas e ameríndias daquelas de herança eurocêntrica, cisão que funda, a nosso ver, o regime historiográfico colonial do teatro brasileiro. Para isso, mobilizamos um conjunto de referências advindas das ciências sociais (em especial, a sociologia econômica e a antropologia da arte e da cultura), buscando, a partir da apropriação do teatro por estes campos epistemológicos, reinscrever as práticas performativas das “sociedades contra o Estado” como práticas fundamentais para a história das teatralidades brasileiras e para os agenciamentos performativos contemporâneos sob o signo do desmantelamento das políticas culturais.
Resenha
Authors: Yakini Michel
Published: March 2022

Resenha do livro: Sarau Elo da Corrente 13 anos: tambor, território e oralidades. Organização: Coletivo Literário Sarau Elo da Corrente. São Paulo, Avangi Cultural, 2021, obra comemorativa do Coletivo Literário Sarau Elo da Corrente, atuante desde 2007, nas periferias de São Paulo, que reúne textos dos organizadores; de pesquisadores; além de poesias, prosas curtas e fotografias que ilustram a história do coletivo.
A gente faz teatro ensaiando a revolução
Authors: Cavalcanti Vale Maíra , Bazílio Genivaldo
Published: March 2022

Este artigo é uma experimentação na escrita a partir da fala de Genivaldo Bazílio, mestre da cultura popular em Pernambuco, contando como o teatro apareceu em sua vida e como criou o Grupo de Teatro Atual (GTA) junto a um grupo de pessoas moradoras das periferias de Recife, Olinda e Paulista, atravessadas pelas desigualdades raciais e sociais que marcam o cotidiano destas comunidades. Neste texto a proposta é apresentar a própria forma de transcrição da fala como em si um processo conjunto de escrita - tanto na passagem de áudio para texto quanto na marcação de pausas e seleção de trechos; e fazer da rememoração uma reflexão teórica ao se contar uma trajetória coletiva que atravessa bairros periféricos e encontra movimentos de cultura popular, como o Movimento de Teatro Popular de Pernambuco, o Movimento Negro Unificado, a luta pela criação do espaço cultural Nascedouro de Peixinhos, o Movimento dos Trabalhadores sem Terra, a pedagogia do oprimido de Paulo Freire, o Teatro Experimental do Negro de Abdias do Nascimento, o teatro do oprimido de Augusto Boal, a Coordenação Nacional de Entidades Negras e o movimento sindical. Assim, a reflexão sobre o GTA não aparece na narrativa aqui apresentada na forma de uma síntese explicativa de autores sobre um movimento cultural situado historicamente, mas sim a partir da apresentação de como discussões teóricas entraram na própria trajetória do GTA e influenciaram a sua prática de teatro de rua negro e popular.
Hvorfor Gladsaxemodellen fejlede - om anvendelse af algoritmer på socialt udsatte børn
Authors: Kristensen Kenneth
Published: March 2022

Anvendelse af algoritmer i velfærdsopgaver er nyt. Potentialet er stort, faldgruberne dybe. ”Projekt dataunderstøttet tidlig opsporing af udsatte børn” i Gladsaxe Kommune havde stor interesse, men det blev som følge af mediestorm, aftagende opbakning fra landspolitikerne og hensyn til borgernes tillid lukket allerede i udviklingsfasen. Artiklen beskriver projektforløbet i Gladsaxe, analyserer udfaldet og identificerer en række opmærksomhedspunkter for en kommunal direktion ved anvendelse af algoritmer i velfærdsopgaver. Artiklen bidrager desuden til litteraturen om brugen af algoritmer med et fokus på direktionens rolle samt med et eksempel på anvendelsen af public value-teori på empiriske algoritmecases.
Educação remota e pandemia em close-up
Authors: Dias Rosimeri de Oliveira , Pinto Liliana  Secron , Busquet Líbia
Published: March 2022

Este é um artigo tecido à seis mãos, por meio do encontro e conversas entre três professoras da rede pública de ensino, duas da escola básica e uma da universidade. Esta tessitura conceitua um encontro como aquilo que ativa um campo problemático, princípio de uma formação inventiva de professores. Colocamos em análise e em intervenção uma educação remota, convocada pelos cenários pandêmicos do presente, e o seu plano close-up, que elimina o corpo em sua totalidade como enunciador. No enquadre de uma tela - de computador e/ou celular – a educação vira foco evidenciando um processo de exclusão em massa, tanto do corpo, como de um quantitativo de estudantes e de professores que não possuem acesso ao mundo remoto. Para tanto, o trabalho se divide em três cenas em close-up, a saber: Cena 1:  Pandemia e pandemônio: vai passar!(?); Cena 2: espaços outros e as heterotopias: em uma ofegante epidemia, um pouco de ar para não sufocar; Cena 3/Epílogo: brechas de uma formação inventiva de professores: a evolução da liberdade. A aposta conceitual e metodológica proposta apresenta tomadas que compõem as cenas e funcionam como propagadores da dimensão crítica e de resistência para afirmar modos autogestionários e inventivos de formar que ligam conhecer e viver à um ethos – uma política para a produção de vidas livres, raridades em tempos de educação e controle remotos.
Sistema de avaliação de periódicos no Brasil: Impactos da evolução dos critérios do Qualis-periódicos da Área de Educação
Authors: Sene Laís Zaccaro , Bizelli José Luís
Published: March 2022

O artigo analisa a produção do Qualis-Periódicos da área de Educação, no período de 2010 a 2018 – triênio 2010 a 2012; quadriênio 2013 a 2016 e avaliação de meio termo sobre os anos 2017 e 2018. O instrumento serve para avaliar a produção de docentes do Sistema de Pós-graduação no Brasil, embora seja frequentemente utilizado para outros fins. É possível determinar dois tipos de mudança nos critérios de avaliação: uma incremental, entre o triênio e o quadriênio; outra de ruptura, quando em 2019, na avaliação de meio termo, introduz-se um novo fator para medir impacto ou citação. As análises da pesquisa estão fixadas sobre fontes documentais: os próprios Qualis e os documentos orientadores e avaliativos da Área da Educação. Os dados demonstram um aumento considerável na estratificação dos periódicos ocasionada pela objetivação dos critérios, nos primeiros períodos, e uma ruptura no último; uma diminuição drástica do universo de avaliação com a introdução do princípio de área mãe; e uma incerteza quanto à avaliação que virá em 2021.
ARANG AKTIF SERBUK GERGAJI KAYU JATI (TECTONA GRANDIS L.F) SEBAGAI BAHAN ADSORBEN PADA PEMURNIAN MINYAK JELANTAH
Authors: Nusratullah Nusratullah , Aminah Sitti
Published: March 2022

Used cooking oil can increase the potential for cancer in the body. Therefore, used cooking oil processing efforts were made to improve its quality by using activated charcoal adsorbent of Tectona Grandis L. F sawdust. This study aimed to improve the quality of used cooking oil through refinign by using charcoal adsorbent of Tectona Grandis L.f sawdust. used cooking oil samples were obtained from Ogoamas 1 Village, Sojol Utara District, Donggala Regency. Based on the results of testing the quality of the oil obtained, the water content was 0.22%, free fatty acid content was 0.25% peroxide number was 1.83 meq / Kg, the iodic number was 45, specific gravity was 0.900 g / mL and oil color clear oil with absorbance value was 0.031 A. Based on the quality of several parameters of cooking oil using activated  charcoal of Tectona Grandis L.f sawdust, it has fulfilled the  quality requirements of cooking oil according to SNI 3741-1995.
Meningkatkan Hasil Belajar Siswa pada Materi Persamaan Kuadrat Melalui Penerapan Model Problem Based Learning
Authors: Savitri Kadek , Rizal Muh , Linawati Linawati
Published: March 2022

The purpose of this study was to obtain a description of the application of the Problem Based Learning model that can improve student learning outcomes in Quadratic Equations Class X of IPA 4 SMA N 1 Torue. The type of research used is classroom action research (CAR) which refers to the research design of Kemmis and Mc. Taggart, namely: planning, action, observation, and reflection. The research has been carried out, obtained that the learning outcomes of class X IPA 4 Torue 1 Senior High School in the quadratic equation material has increased, namely the results of observation of teacher and student activities in the first cycle are in the good category while in the second cycle the observations of the activities of teachers and students are in the very good category. In the first cycle the percentage of classical completeness was 47.2% while the second cycle of the classical completeness percentage was 77.27%. Based on these results, it can be concluded that the application of the PBL model can improve student learning outcomes in the quadratic equation material in class X IPA 4 Torue 1 SMA by following the phases as follows: (1) Student orientation to the problem, (2) Organizing students to learning, (3) guiding individual and group investigations, (4) developing and presenting work, and (5) analyzing and evaluating problem solving processes.
Kandungan Mikroplastik pada Saluran Pencernaan Ikan Katombo (Rastrellinger kanagurta) dari Teluk Palu dan Pemanfaatannya sebagai Media Pembelajaran
Authors: Wirawan Moh Dhuhri Surya , Dhafir Fatmah , Budiarsa I Made , Shamdas Gamar Binti Non
Published: March 2022

Mikroplastik adalah partikel plastik yang berukuran kurang dari 5 mm. Penelitian ini bertujuan untuk mendeskripsikan adanya kandungan mikroplastik pada saluran pencernaan ikan Katombo (Rastrellinger kanagurta) yang bersumber dari Teluk Palu, dan pemanfaatannya sebagai media pembelajaran. Sampel pada penelitian adalah sebanyak 10% Ikan Katombo dari hasil tangkapan nelayan. Teknik pengumpulan data dilakukan menggunakan teknik analisis isi lambung. Hasil penelitian yang didapatkan yaitu kelimpahan mikroplastik tertinggi terdapat pada stasiun I dengan 2,2 partikel/ikan, stasiun II 0,83 partikel/ikan, dan stasiun III 1,5 partikel/ikan. Hasil uji validasi video pembelajaran diperoleh nilai persentase sebesar 76,86% sehingga dapat video pembelajaran dapat dikategorikan layak digunakan sebagai media pembelajaran.
Diversity of Bivalvia Types in The Sea Waters of Donggulu Village Kasimbar District Parigi Mautong
Authors: Gunawan Rio , Bustamin Bustamin , Masrianih Masrianih , Zainal Syech
Published: March 2022

Bivalves are a class within molluscs that includes all shells that have a pair of shells. This study aims to describe the diversity of bivalves in the waters of Donggulu village, Kasimbar district, Parigi Moutong district and the types of bivalves obtained can be used as a learning resource in the form of a pocket book. This research was conducted in Ocean Waters in Donggulu Village, Kasimbar District, Parigi Moutong Regency in February 2020. This type of research is descriptive, sampling using cruising techniques by dividing stations into three stations. The results of the research and identification found 15 types of bivalves, namely Anodonta anatina, Spondylus gaederopus, Macoma balthica, Macoma elimata, Anadara granusa, Anadara gubernaculum, Anadara sativa, Anadara sp, Vasticardium flavum, Donax faba, Hippopus hippopus, Tridacna maxsima, Paphia gallus, Gafrarium sp, and Gafrarium pectinatum. The diversity index obtained is H '= 1.088 which indicates that the bivalve species are at a moderate level. The validation of research results as a learning resource in the form of a pocket book yielded a percentage89.675% which indicates that it is feasible to be used as a learning resource
ANALYZING SENTIMENTS TOWARDS E-LEVY POLICY IMPLEMENTATION IN GHANA USING TWITTER DATA.
Authors: APPIAHENE PETER , Afrifa Stephen , Kyei Emmanuel Akwah , Nti Isaac , Adu Kwabena , Mensah Patrick Kwabena
Published: March 2022

Government policies face challenges whenever it is implemented or
proposed. The ordinary Ghanaian always feels the down side of government
policies. This paper ponders on the government of Ghana proposed
electronic levy on mobile money transactions which was announced in the
2022 budget on November 17, 2021. Using the concept of sentiment
analysis and Twitter data, we have carefully studied this government
policy from the perspective of the ordinary citizen. Aside from
conducting a non-bias examination, a full data analysis has also been
performed on the data to further expound the reasons associated with the
discontentment among people in the country. The results showed that data
on sentiments are enormous on social media (twitter) and it serves as
means for people to share their views. Our analysis depicted that phase
five recorded the highest number of data, thus, 18,423 data with
24.43%, 59.29%, and 16.28% been positive, neutral and negative
respectively. In our results, phase one recorded the least amount of
data with 8.93%, 89.29%, 1.78% been positive, neutral and negative
respectively in a total of 1,400. In the full data analysis on 38,771
tweets, 25.50%, 59.02%, and 15.48% were positive, neutral, and
negative respectively.
A novel security mechanism for software defined network based on Blockchain
Authors: Guo Xian , Wang Chen , Cao Laicheng , Jiang Yongbo , Yan Yan
Published: March 2022

The decoupling of the data plane and the control plane in the Software- Defined Network (SDN) can increase the flexibility of network management and operation. And it can reduce the network limitations caused by the hardware. However, the centralized scheme in SDN also can introduce some other security issues such as the single point of failure, the data consistency in multiple-controller environment and the spoofing attack initiated by a malicious device in the data plane. To solve these problems, a security framework for SDN based on Blockchain (BCSDN) is proposed in this paper. BCSDN adopts a physically distributed and logically centralized multi-controller architecture. LLDP protocol is periodically used to obtain the link state information of the network, and a Merkle tree is establised according to the collected link information and the signature is generate based on KSI for each link that submitted by a switch by the main controller selected by using the PoW mechanism. Such, the dynamic change of network topology is recorded on Blockchian and the consistency of the topology information among multiple controllers can be guaranteed. The main controller issues the signature to the corresponding switch and a controller checks the legitimate of a switch by verifying the signature when it requests the flow rule table from the controller later. The signature verification ensures the authenticated communication between a controller and a switch. Finally, the simulation of the new scheme is implemented in Mininet platform that is a network emulation platform and experiments are done to verify our novel solution in our simulation tool. And we also informally analysis the security attributes that provided by our BCSDN.
Performance and scalability evaluation of a permissioned Blockchain based on the Hyperledger Fabric, Sawtooth and Iroha
Authors: Woznica Arnold , Kedziora Michal
Published: March 2022

This paper shows the performance and scalability evaluation of different blockchain platform implementations. Hyperledger Iroha implementing YAC consensus, Sawtooth implementing PoET algorithm, and Hyperledger Fabric framework implementation. Performance evaluation and scalability assessment were done by varying different sets of parameters such as block size, transaction sending rate, network traffic distribution, and network size. Performance evaluation was done based on average transaction latency, network throughput, and transaction failure rate. Scalability was assessed based on changes in transaction latency and throughput with increasing network size. Test results let to study the impact of a particular parameter on the private blockchain network performance and show how they can be adjusted to improve performance.
ProRes: Proactive re-selection of materialized views
Authors: Mouna Mustapha , Bellatreche Ladjel , Boustia Narhimene
Published: March 2022

Materialized View Selection is one of the most studied problems in the database field, covering SQL and NoSQL technologies as well as different deployment infrastructures (centralized, parallel, cloud). This problem has become more complex with the arrival of data warehouses, being coupled with the physical design phase that aims at optimizing query performance. Selecting the best set of materialized views to optimize query performance is a challenging task. Given their importance and the complexity of their selection, several research efforts both from academia and industry have been conducted. Results are promising ? some solutions are being implemented by commercial and open-source DBMSs ?, but they do not factor in the following properties of nowadays analytical queries: (i) largescale queries, (ii) their dynamicity, and (iii) their high interaction. Studies to date fail to consider that complete set of properties. Considering the three properties simultaneously is crucial regarding today?s analytical requirements, which involve dynamic and interactive queries. In this paper, we first present a concise state of the art of the materialized view selection problem (VSP) by analyzing its ecosystem. Secondly, we propose a proactive re-selection approach that considers the three properties concurrently. It features two main phases: offline and online. In the offline phase, we manage a set of the first queries based on a given threshold ? by selecting materialized views through a hypergraph structure. The second phase manages the addition of new queries by scheduling them, updates the structure of the hypergraph, and selects new views by eliminating the least beneficial ones. Finally, extensive experiments are conducted using the Star Schema Benchmark data set to evaluate the effectiveness and efficiency of our approach.
A neuroevolutionary method for knowledge space construction
Authors: Segedinac Milan , Milicevic Nemanja , Celikovic Milan , Savic Goran
Published: March 2022

In this paper we propose a novel method for the construction of knowledge spaces based on neuroevolution. The main advantage of the proposed approach is that it is more suitable for constructing large knowledge spaces than other traditional data-driven methods. The core idea of the method is that if knowledge states are considered as neurons in a neural network, the optimal topology of such a neural network is also the optimal knowledge space. To apply the neuroevolutionary method, a set of analogies between knowledge spaces and neural networks was established and described in this paper. This approach is evaluated in comparison with the minimized and corrected inductive item tree analysis, de facto standard algorithm for the data-driven knowledge space construction, and the comparison confirms the assumptions.
Optimized placement of symmetrical service function chain in network function virtualization
Authors: Dang-Quang Nhat-Minh , Yoo Myungsik
Published: March 2022

Network function virtualization (NFV) is one of the key technology enablers for actualizing 5G networks. With NFV, virtual network functions (VNFs) are linked together as a service function chain (SFC), which provides network functionality for the customer on demand. However, how to efficiently find a suitable placement for VNFs regarding the given objectives is an extremely difficult issue. The existing approaches assume that the SFC has a simple and asymmetrical pattern that is unsuitable to modeling a real system. We address this limitation by studying a VNF placement optimization problem with symmetrical SFCs that can support both symmetric and asymmetric traffic flows. This NP-hard problem is formulated as a mixed-integer linear programming (MILP) model. An iterative greedy-based heuristic is proposed to overcome the complexity of the MILP model. Extensive simulation results show that the proposed heuristic can obtain a near-optimal solution compared to MILP for a small-scale network, and at the same time, is superior to a traditional heuristic for a large-scale network.
Numerical simulation on the thermal process of waxy crude oil during its storage under different wall temperatures
Authors: Zhao Jian , Li Yanpeng , Dong Hang , Liu Junyang , Qu Dongjie
Published: March 2022

This study aims to elucidate the underlying mechanism of the association between heat characteristics and influencing factors and to provide theoretical guidance for increasing safety and economics during waxy crude oil storage. Physical and mathematical models with the numerical approaches to represent the static cooling of waxy crude oil are established. Based on the numerical simulations, the effect of the wall temperature on the temperature and velocity distribution is mainly confined to the thermal influence region near the wall, and it increases with the cooling process. The gelation of waxy crude oil near the wall is the most significant and highly correlated with the convection heat transfer coefficient near the wall, so both are significantly affected by the wall temperature. In addition, based on the partial correlation and grey correlation analysis, the effect of the wall temperature is quantitatively analysed. The results show that the correlation between wall temperature and average cooling rate is very significant. In contrast, the correlation between sidewall temperature and thermal characteristics and its derived gelation behaviour are more significant. Furthermore, detailed information on the correlation between the wall temperature and the parameters that characterize the thermal characteristics is obtained.
Thermo-economic simulation of four power generations based on genetic algorithm
Authors: Luo Chao
Published: March 2022

The thermodynamic and economic suitability of four geothermal power systems is analyzed. When the heat source temperature ranges from 100-150?C, the performance indicators of power capacity per unit geo-fluid, exergy efficiency, payback period, net present value and internal rate of return for four types of the power system are calculated. The results show that when the heat source temperature increases from 100-150?C, the power capacity per unit geo-fluid for single flash, organic rankine cycle (ORC), double flash, and flash-ORC system increases from 2.26-7.72 kWh/t, 2.05-8.37 kWh/t, 2.96-9.96 kWh/t, and 2.76-9.82 kWh/t, respectively, and the performance indicators of two-stage energy conversion systems are better than single systems. R245fa is selected as the working fluid based on anti-scaling and better performance. When the heat source temperature is 130?C, the payback period, net present value and internal rate of return of flash-binary power system are six years, 2508000 US$ and 16.09%, respectively. The research shows that, unlike the single objective optimization of the two power systems, the multi-objective feasibility analysis is a technical integration innovation of the existing research. The research can provide technical support for power construction and realize the sustainable development of clean energy in China.
Potential of tubular solar still with rectangular trough for water production under vacuum condition
Authors: Ben Hamida , Alshammari Fuhaid , Alatawi Ibrahim , Alhadri Muapper , Almeshaal Mohammed , Hajlaoui Khalil
Published: March 2022

Water scarcity, energy scarcity, and demographic difficulties are all real concerns for many countries throughout the world. Due to the high solar intensities and long sunshine duration in Saudi Arabia, solar water desalination can be effectively utilized for obtaining fresh water. The aim of this paper is explore the potential of simple-design and plentiful rectangular trough in desalination under vacuum condition. Numerical analysis of the heat and mass transfer of tubular solar still containing rectangular trough was performed. A 2-D code that solves the systems of equations for mass, momentum, concentration, and energy was developed and validated. The effect of the rib and the vertical elevation of the trough on heat and mass transfer were investigated. The numerical results showed that the distillation rate is significantly increased with the increase of the rib of the trough at a minimum of 19.78%. In addition, the distillation rate is increased at a minimum of 12.88% when the trough moves towards the upper side of the glass cover where the condensation takes place.
Optimized biodiesel production from C. innophyllum bio-oil using Kriging and Ann predicitive models
Authors: Venkatesan Hariram , Johnrose John , Arumugam Saravanan , Mari Vinoth , Moorthy Balachandar , Stalin Johnson , Vasudev Lakshmi
Published: March 2022

This work aimed at optimizing the two-stage transesterification efficiency of the production of C. inophyllum biodiesel using artificial neural network and Kriging predictive models. Response surface methodology was used to develop the central rotatable composite design of 27 trial experimental runs with variations in the input process parameters like methanol to oil molar ratio, potassium hydroxide catalyst loading, and reaction time. A multi-layered non-linear regressive artificial neural network model with feed-forward propagation and a numerical surrogate Kriging model was used to predict the C. inophyllum biodiesel yield. The efficacy of the developed model was verified using analysis of variance by com-paring its coefficient of determination and the mean relative percentage deviation values. The optimized C. inophyllum biodiesel as 98.1% is derived with 0.94 v/v of methanol to oil molar ratio, 0.98 wt.% of potassium hydroxide catalyst loading, and 80 minutes reaction time with 70?C constant reaction temperature as predicted by Kriging model. The optimized parameters were also verified experimentally.
A novel acquisition approach for heat transfer coefficient during periodic cooling process
Authors: Chen Demin , He Zihuai , Zhao Yibo , Lu Biao
Published: March 2022

Temperature is an important parameter affecting the micro-structure of slab and an important guarantee to improve the performance index of metallurgical products. However, the temperature level is affected by the heat transfer coefficient. Taking laminar cooling as an example, a method for calculating the heat transfer coefficient of a system with periodic characteristics is proposed in this study. Firstly, it was assumed that the distribution of heat transfer coefficient is a piecewise function composed of positive half wave of sine function and line function. The calculation methods of characteristic parameters, through structural parameters and operating parameters, in three cases of ?separation?, ?adjacent? and ?intersection? are given. Secondly, heat transfer model of slab was established. Surface temperature and center temperature distribution of slab were compared with the test results. The relative errors of surface and center temperature were 2.46% and 1.33%, respectively, which verified the accuracy of this method. Finally, the coupling relationship between the characteristic parameters in the heat transfer coeficient distribution function is obtained by calculation. Compared with the methods presented in the literature, this method reduces the number of unknown parameters while ensuring the accuracy of the model, and gives guidance on how to change the slab temperature and improve product performance by adjusting the structure and operating parameters.
Tax-Rate Biases in Tax Decisions: Experimental Evidence
Authors: Amberger Harald J. , Eberhartinger Eva , Kasper Matthias
Published: March 2022

This study investigates biases in tax decisions. In a series of four laboratory experiments with 303 students and 62 tax professionals, we document a systematic tax-rate bias in decisions under time constraints. Specifically, decision makers overestimate the relevance of less complex tax-rate information compared to more complex tax-base information. This behavior leads to suboptimal tax decisions. We also find that decision making, on average, is unaffected by professional experience: Students and tax professionals are similarly prone to tax-rate bias. However, senior tax professionals are more rationally inattentive. These decision makers are less likely to exhibit a tax-rate bias when exhibiting such bias is relatively costly. Overall, our findings suggest that resource constraints impede the use of complex tax-base information, which results in suboptimal tax decisions. Interviews with senior tax professionals indicate potential for tax-rate biases in real-world tax decisions and thereby provide directions for future research.

JEL Classifications: C91; D03; H32; K34; M21; M41.
Dapagliflozin Impairs the Suppression of Endogenous Glucose Production in Type 2 Diabetes Following Oral Glucose
Authors: Alatrach Mariam , Agyin Christina , Solis-Herrera Carolina , Lavryneko Olga , Adams John , Gastaldelli Amalia , Triplitt Curtis , DeFronzo Ralph A. , Cersosimo Eugenio
Published: March 2022

OBJECTIVE

To examine the effect of SGLT2 inhibitors (SGLT2i) on endogenous glucose production (EGP) in patients with type 2 diabetes after an oral glucose load.

RESEARCH DESIGN AND METHODS

Forty-eight patients with type 2 diabetes received an 8-h [3-3H]-glucose infusion (protocol I) to assess EGP response to: 1) dapagliflozin (DAPA), 10 mg; 2) exenatide (EXE), 5 μg s.c.; 3) DAPA/EXE; and 4) placebo (PCB). After 2 weeks (protocol II), patients were restudied with a 5-h double-tracer (i.v. [3-3H]-glucose and oral [1-14C]-glucose) oral glucose tolerance test (OGTT) preceded by PCB, DAPA, EXE, or DAPA/EXE.

RESULTS

Protocol I: EGP decreased (P < 0.01) with PCB (2.16 ± 0.15 to 1.57 ± 0.08 mg/kg/min) and EXE (2.13 ± 0.16 to 1.58 ± 0.03) and remained unchanged (P = NS) with DAPA (2.04 ± 0.17 vs. 1.94 ± 0.18) and DAPA/EXE (2.13 ± 0.10 vs. 2.09 ± 0.03). During OGTT, EGP decreased (P < 0.01) with PCB (2.30 ± 0.05 to. 1.45 ± 0.06 mg/kg/min) and EXE (2.53 ± 0.08 to 1.36 ± 0.06); with DAPA (2.20 ± 0.04 vs. 1.71 ± 0.07) and DAPA/EXE (2.48 ± 0.05 vs. 1.64 ± 0.07), the decrease in EGP was attenuated (both P < 0.05). During OGTT, the insulin/glucagon (INS/GCN) ratio increased in PCB (0.26 ± 0.03 vs. 0.71 ± 0.06 μU/mL per pg/mL), whereas in DAPA (0.26 ± 0.02 to 0.50 ± 0.04), the increase was blunted (P < 0.05). In EXE, INS/GCN increased significantly (0.32 ± 0.03 to 1.31 ± 0.08) and was attenuated in DAPA/EXE (0.32 ± 0.03 vs. 0.78 ± 0.08) (P < 0.01).

CONCLUSIONS

These findings provide novel evidence that the increase in EGP induced by SGLT2i is present during an oral glucose load. The fact that stimulation of EGP occurs despite elevated plasma insulin and glucagon suggests that additional factors must be involved.
Connecting Genomics and Proteomics to Identify Protein Biomarkers for Adult and Youth-Onset Type 2 Diabetes: A Two-Sample Mendelian Randomization Study
Authors: Ghanbari Faegheh , Yazdanpanah Nahid , Yazdanpanah Mojgan , Richards J. Brent , Manousaki Despoina
Published: March 2022

Type 2 diabetes shows an increasing
prevalence in both adults and children. Identification of biomarkers for both
youth and adult-onset type 2 diabetes is crucial for development of screening
tools or drug targets. Here, using two-sample Mendelian randomization (MR), we identified
22 circulating proteins causally linked to adult type 2 diabetes and 11 proteins
with suggestive evidence for association with youth-onset type 2 diabetes. Among
these, co-localization analysis further supported a role in type 2 diabetes for
C-type
Mannose Receptor 2 (MR OR=0.85, 95% CI 0.79 – 0.92 per genetically predicted standard
deviation (SD) increase in protein level), MANS domain containing 4 (MR OR=0.90,
95% CI 0.88 – 0.92), Sodium/potassium-transporting
ATPase subunit Beta-2 (MR OR=1.10, 95% CI 1.06 – 1.15), Endoplasmic
Reticulum Oxidoreductase 1 Beta (MR OR=1.09, 95% CI 1.05 – 1.14),
Spermatogenesis-Associated Protein 20 (MR OR=1.12, 95% CI 1.06 – 1.18),
Haptoglobin (MR OR=0.96, 95% CI 0.94 – 0.98), and Alpha
1-3-N-Acetylgalactosaminyltransferase and Alpha 1-3-Galactosyltransferase (MR OR=1.04,
95% CI 1.03 – 1.05). Our findings support a
causal role in type 2 diabetes for a set of circulating proteins, which represent
promising type 2 diabetes drug targets.
Satisfacción del estudiante de contabilidad respecto al desempeño docente según su rango de antigüedad
Authors: Beltrán López Robert , Arias-Herrera José Christian , Gómez Gerardo , Díaz Rodríguez Eustacio , Selem Salinas Mario Arturo
Published: March 2022

El objetivo de este trabajo es determinar la satisfacción del estudiante del programa de Contador Público del Instituto Tecnológico de Chetumal respecto al desempeño de los profesores considerando la antigüedad de estos últimos (los de mayor experiencia, los que se encuentran en etapa intermedia y los que inician actividades). El estudio es de tipo correlacional. En cuanto al diseño, se considera no experimental. La muestra fue a conveniencia. Se aplicó un cuestionario de 30 preguntas con opción múltiple a 123 alumnos. Entre los resultados destaca que los estudiantes experimentan mayor satisfacción académica cuando hay profesores nuevos involucrados. En el ámbito de los conocimientos, están más satisfechos con los profesores longevos. Y en las capacidades para transmitir y desarrollar competencias, hay una mayor satisfacción cuando hay profesores intermedios involucrados. Los resultados dejan entrever que es necesaria una acción proactiva y comprometida de todos los actores institucionales para observar el comportamiento y detectar a tiempo cualquier problemática que pueda causar la deserción de los alumnos. De la labor docente depende sin duda el grado de motivación, así como el crecimiento académico de los estudiantes, por lo que debe haber un balance entre las habilidades y competencias de los educadores, lo cual es responsabilidad de las autoridades.
Two Pathogenic Variants in Two Ultra Rare Syndromes; Smith- Kingsmore Syndrome and Rubinstein Taybi Syndrome Type2
Authors: Ozdemir Yesim , Cag Murat , Dundar Munis , Kiraz Aslihan , Meral Cihan
Published: March 2022

Smith-Kingsmore Syndrome is a very rare autosomal dominant intellectual disability syndrome characterized by macrocephaly, seizures, umbilical hernia, and facial dysmorphic features. The prevalence of SKS, with 27 patients reported so far, is still unknown. Rubinstein Taybi Syndrome Type 2 (RSTS2) is another rare genetic condition that prevalance is <1/1.000.000. It is characterized by mental and developmental retardation, dysmorphic findings.
We present a seven-year-old girl who was diagnosed with SKS and RSTS2 based on identification of a novel de novo pathogenic variant in the MTOR and EP300 genes (MIM #616638 and #613684) by Whole Exome Sequencing and supported by some characteristic clinical features.
In our patient, pathogenic mutations belonging to two different ultra-rare syndromes were found. However, the patient had clinical findings of only Smith Kingmore Syndrome among the syndromes. Although he had a pathogenic mutation, she did not have the clinical findings of Rubinstein Taybi Syndrome. This the first case presenting two different mutation of these two ultra-rare syndromes.
EFEKTIVITAS BAHAN AKTIF HERBISIDA DAN VARIETAS TERHADAP PENGENDALIAN GULMA, PERTUMBUHAN DAN HASIL TANAMAN BAWANG MERAH (Allium ascalonicum L.)
Authors: Deden Deden , Dukat Dukat , Nur Subandi
Published: March 2022

Bawang merah saat ini sudah menjadi komoditas yang diperhitungkan di Indonesia, karena keberadaanya menjadi salah satu faktor variabel penentu inflasi secara ekonomi nasional. Kehadiran gulma diantara tanaman bawang merah menjadi kendala dan menyebabkan penurunan produktivitas hasil bawang merah, sehingga perlu dikendalikan secara tepat, efektif dan efisien. Selain itu, bibit merupakan salah satu faktor utama yang menentukan keberhasilan usaha tani bawang merah. Upaya dan strategi harus terus dikembangkan untuk dapat meningkatkan produksi bawang merah, khususnya upaya pengendalian gulma dan penggunaan varietas bibit yang tepat sehingga mampu meningkatkan produktivitas tanaman bawang merah. Tujuan penelitian adalah untuk mengetahui pengaruh bahan aktif herbisida dan varietas terhadap pengendalian gulma, pertumbuhan dan hasil bawang merah. Untuk mengetahui jenis bahan akif herbisida dan  vaietas yang paling tepat untuk pengendalian gulma, pertumbuhan dan hasil bawang merah. Percobaan akan dilaksanakan di Desa Gagasari Kecamatan Gebang Kabupaten Cirebon.pada bulan Februari sampai dengan Mei 2021. Menggunakan Metode Rancangan Acak Kelompok (RAK) pola faktorial dengan 3 kali ulangan. Perlakuan terdiri dari dua faktor yakni faktor pertama adalah bahan aktif herbisida (H0 : Kontrol, H1 : Penyiangan petani, H2 : Oksifluorfen, H3 : Pendimetalin), sedangkan faktor kedua adalah 2 varietas bawang merah (V1 : Varietas Bima, V2 : Varietas Ilokos dan V3 : Varietas Sumenep). Pengamatan utama dilakukan terhadap fitotoksitas dan biomasa gulma, tinggi tanaman, jumlah daun dan bobot kering hasil bawang merah. Hasil penelitian menunjukan bahwa perlakuan herbisida (Oksifluorfen dan Pendimetalin) tidak menimbulkan fitotoksitas atau keracunan bagi tanaman utama bawang merah. Herbisida Oksifluorfen dan varietas sumenep secara mandiri memberikan perbedaan yang nyata terhadap tinggi tanaman pada pengamatan 21, 28 dan 35 HST. Herbisida Oksifluorfen, Pendimetalin dan penyiangan manual serta penggunaan varietas ilokos menunjukan perbedaan yang nyata terhadap jumlah daun. Pengendalian gulma pada tanaman bawang merah dengan menggunakan herbisida lebih efektif dilakukan bila dibandingkan dengan pengendalian penyiangan manual ataupun kontrol. Penggunaan herbisida Oksifluorfen mampu menghasilkan bobot umbi kering bawang merah 5,98 kg/petak atau setara dengan 12,57 ton/hektar. Jenis varietas ilokos mampu menghasilkan bobot umbi kering 5,85 kg per petak atau setara 12,16 ton/hektar.