Miracle-dz/UniFAR-FTUs huggingface dataset:
Designing a Doherty Power Amplifier Without Offset Compensation Lines

This work presents the equivalent electrical circuit (EEC) analysis of the 2-way Doherty Power Amplifier (DPA). For this purpose, the sub-amplifiers used in the 2-way DPA are modeled using real voltage sources instead of ideal sources. For the first time, the general voltage and current equations for each node of the EEC are determined using circuit theory with transmission line concepts. The analysis results explain some of the empirical practices carried out in other works to tune the 2-way DPA response, such as offset lines or asymmetrical bias voltages, etc. This analysis allows us to examine the impact that the auxiliary sub-amplifier bias voltage has on the efficiency of the 2-way DPA, suggesting the use of the phase-to-amplitude distortion (AM-PM) of the auxiliary sub-amplifier to eliminate the compensation lines that are commonly implemented arbitrarily in the 2-way DPA, whose objective is to synchronize the output signals of the subamplifiers. The experimental data of a 20 W (43 dBm) 2-way DPA designed and fabricated for a central frequency of 1.875 GHz with GaN transistors validate the proposed idea, resulting in a compact design and a significantly reduced design time.
Analysis of gas content in oil-filled equipment with defects for which ethane is the key gas

The article presents results of a comprehensive analysis of the gas content in oil of 252 pieces of high-voltage equipment with defects, for which ethane is the key gas. There are 14 types of defects with maximum ethane content, which correspond both to overheating with temperature 150300°C and low temperature overheating accompanied by discharges with different energy density (partial discharges, spark discharges, discharges with low and high energy density, arc discharges). The most typical defects are analysed and examples of their recognition by different researchers are given. For each type of defect, ranges of gas percentage values and gas ratio values are obtained. This is particularly important for the recognition of combined defects (overheating that is accompanied by discharges), because for such defects the values of these criteria are not regulated in any known standard for the interpretation of the results of the analysis of gases dissolved in oil. For the first time, 14 nomograms and graphic areas of defects for which ethane is the key gas have been obtained, which makes it possible to significantly expand the range of reference nomograms, as the regulatory document in force in Ukraine does not contain reference nomograms for defects with the maximum content of ethane. For all 252 pieces of equipment, a comparative analysis of known diagnoses with diagnoses made using the Duval triangle was made. It has been determined that diagnoses made using different methods may differ significantly from each other as well as from real diagnoses. The ranges of gas percentage and gas ratio values obtained in the work, together with the defect nomograms, make it possible to use three of these criteria simultaneously to recognise the type of defect with a maximum ethane content, which in turn will improve the reliability of defect type recognition based on the analysis of gases dissolved in oil.
Emotion Detection using Deep Facial Features

Emotion Detection became one of the most efficient and challenging activities in human interactions. In general, facial gestures are normal and clear means of expressing their feelings and intentions to human beings. The main features of non-verbal conversations are facial expressions. The study of the techniques of Face Emotion Recognition involves three key phases, like pre-processing, extracting of features and, classification techniques. This paper proposes the comparison of deep learning architectures available in Keras for emotion detection using the Deep Facial Features in images using Transfer Learning from famous pre-trained models like VGG-16, ResNet152V2, InceptionV3, and Xception and generating bottleneck features for our input images. The performance of these models is evaluated based on the dataset which is a combination of the Cohn-Kanade Dataset (CK+) and Japanese female facial emotion (JAFFE). For the above-mentioned architectures, the accuracies obtained are 83.16 %, 82.15 %, 77.1 %, 78.11 % respectively. (Abstract)
Conflict and Conflict Management: How Culture Matters

Many conflicts are embedded in intolerance and prejudices that are culturally constructed. Some others have also remained intractable on account of lack of cultural awareness and intercultural communication. People, most times, do not only see things from their own cultural perspectives, but usually expect "cultural others" to use same lens to cognise and interpret the social environment. Divergent views that emanate from an alternative cultural perception, therefore, necessarily create misunderstanding, which may afterward result in tension, and sometimes, violent conflict. Since human perceptions, values, and organisation of meanings are product of socialisation experience, which usually is context specific, it reasonably follows that cultures around the world may develop different explanation for a singular phenomenon. In other words, intercultural conflicts occur in the contexts of cultural differences and underscore the way different societies perceive social reality (Kimmel, 2006; Avruch, 2005; Avruch and Black, 1991). Quite often, when the relevance of culture to conflict and conflict management is acknowledged in peace and conflict studies, it is usually in relation to the impacts, which communication and cultural perception bear on negotiations and mediation processes (Fisher 1980; Weiss 1994; Bercovitch and Elgstrom 2001). Stephen Weiss, for instance, reckons negotiation as duly affected by the actors' basic conception of negotiation, their orientation toward time, their willingness to take risks, their protocol, and their decisionmaking style (Weiss 1994). Similarly, TingToomey (1999) suggests that cultural and ethnic miscommunication and conflicts often arise due to ignorance of different value priorities in different ethnic communities and cultures. In all of this, the role of culture as a basic factor of human behaviour is abbreviated and reckoned as significant only to the process of conflict management and particularly the
Influence of water on the physical properties of olivine, wadsleyite, and ringwoodite

Abstract. The incorporation of water in nominally anhydrous minerals plays a crucial role in many geodynamic processes and evolution of the Earth and affects the physical and chemical properties of the main constituents of the Earth's mantle. Technological advances now allow the transport properties of minerals to be precisely measured under extreme conditions of pressure and temperature ( P and T ) that closely mimic the P – T conditions throughout much of the Earth's interior. This contribution provides an overview of the recent progress in the experimental studies on the influence of water on physical properties (i.e., diffusivity, electrical conductivity, thermal conductivity, sound velocity, and rheology) of olivine, wadsleyite, and ringwoodite together with their applications. In particular, consistency among various experimental data is investigated, discrepancies are evaluated, and confusions are clarified. With such progress in the experimental determination of transport properties of major mantle minerals, we can expect new insights into a broad range of geoscience problems. Many unresolved issues around water inside Earth require an integrated approach and concerted efforts from multiple disciplines.
Ovalóides em espaço de parâmetros Ovaloids in parameter space Arlane

Palavras-chave Geometria Global Curvatura Gaussiana Espaço de Parâmetros Teoria de Morse Resumo A dinâmica topológica induzida por inversões geométricas no plano complexo já foi abordada e os resultados foram apresentados por Vieira et al. (2017). Posteriormente, foi verificado que, para uma coleção com três inversões, o espaço de parâmetros das medidas de Markov com suporte no atrator do sistema é um subconjunto aberto de R folheado por superfı́cies de nı́vel compactas definidas pela entropia métrica: superfı́cies isentrópicas (VIEIRA et al., 2018). O objetivo deste artigo é usar a Teoria de Morse para descrever a geometria global dessas superfı́cies. Como funções dos nı́veis, provamos que a área e o diâmetro tendem a zero e que a curvatura Gaussiana é ilimitada, quando os nı́veis se aproximam do nı́vel crı́tico (entropia máxima). Em particular, demonstramos que existe um intervalo aberto maximal de nı́veis para os quais as superfı́cies são ovalóides.
Comparison of Combined/Carvedilol Moderate Dose Atorvastatin to Single High Dose Atorvastatin for the Prevention of Contrast-Induced Nephropathy after Cardiac Catheterization

Background: Contrast-induced nephropathy (CIN) is associated with increased morbidity, and the need for short-term hemodialysis. Although several preventive measures have been used, the best approach to prevent CIN is still controversial. Objectives: This study is intended to evaluate the protective effect of carvedilol/ medium dose statin compared to the recommended high dose atorvastatin on the development CIN in patients undergoing elective cardiac catheterization (CC). Methods: A total of 144 patients planned for CC were randomly assigned to: • Group (A): 49 patients received atorvastatin as single high dose 80 mg 12 hours before CC and another 40 mg of atorvastatin 2 hours before PCI. • Group (B): 48 patients were prescribed carvedilol 12.5 mg twice daily for seven days before CC and continued for 24 hours post CC, plus 40 mg atorvastatin 12 hours before CC. • Group (C): 47 patients received 40 mg atorvastatin 12 hours before CC. Results: The baseline characteristics of the 3 groups were comparable. CIN incidence was the lowest in group A, but was not significantly different (p=0.420). CIN developed in 4 (8.2%), 6(12.2%), and 8(17%) patients in groups A, B, and C respectively. Median change in CrCl 48 hours, and serum NGAL 4 hours post CC was significantly lower in group A compared to group C (p=0.0330, p=0.0348 respectively). Conclusions: The present study revealed that, combined carvedilol/statin regimen was comparable to single high dose atorvastatin in CIN prevention. However, short high dose of atorvastatin might be preferable in terms of kidney function preservation.
A REVIEW ON POLOXAMER AND HYDROXY PROPYL METHYL CELLULOSE COMBINATION AS THERMORESPONSIVE POLYMERS IN NOVEL OPHTHALMIC IN SITU GEL FORMULATION AND THEIR CHARACTERIZATION

Poor bioavailability is one of the most significant problems in the delivery of the ocular drug system. Ophthalmic ointments, solutions and suspensions are the most frequently used dosage forms to treat ocular disease, and their effectiveness as a drug are compromised by several limitations that lead to poor ocular bioavailability. In situ gel is one of the most promising strategy and solutions to improve the ocular bioavailability of drugs. The purpose of this review is to discuss the formulation and characterization of in situ gel. This review is written based on the data or information obtained by using several search engines and several scientific journals, focused on Poloxamer 407 and Hydroxy Propyl Methyl Cellulose (HPMC) bases combination. Active ingredients to treat ocular disease such as Ciprofloxacin, Fluconazole and Ofloxacin can be formulated with the combination of Poloxamer 407 as polymer gelling agent and HPMC as viscosity enhancer to produce good quality in situ gel dosage forms. The in situ gel dosage forms can be a promising alternate solution for the ophthalmic delivery system.
High sensitive triangular photonic crystal fiber sensor design applicable for gas detection

A new triangular photonic crystal fiber with a based microstructure core gas sensor has been proposed for the wavelength range from 1. 1μm to 1. 7μm. The guiding trait of the proposed structure depends on geometric parameters and wavelength, which are numerically studied by the finite element method. According to the results, the relative sensitivity obtained as high as 75.14% at 1. 33μm wavelength. high birefringence and effective area are also obtained by order of 3.75×10-3 and 14.07 μm2 finally, low confinement loss of 1.41×10-2 dB/m is acquired at the same wavelength. The variation of the diameters in the cladding and core region is investigated and the results show that this structure has good stability for manufacturing goals. Since the results show the highest sensitivity at wavelengths around 1. 2μm to 1. 7μm, which is the absorption line of many gases such as methane (CH4), hydrogen fluoride (HF), ammonia (NH3), this gas sensor can be used for medical and industrial applications.
THERMAL AND MECHANICAL PROPERTIES OF CLAY AND DROP-OFF OF CEIBA PENTANDRA (KAPOK) PLANTWOOL MIXTURE

1.0 Introduction Thermal insulations play a major role in the design and production of energy efficient process, devices and systems because of their ability to retard heat transfer by acting as barriers in the path of heat flow. The variety of insulation materials available are mostly those that are primarily made of fiberglass, mineral wool, polyethylene, form, or calcium silicate (Cengel, 2007; Holman, 2010). It is important to note that synthetic fiber composites are being replaced by environmentally friendly materials such as natural fiber because of their low weight, density, cost, renewable nature among others (Ayugi, 2011). Natural fiber low to zero toxin ratings, easy to reuse and dispose with significant health benefits have also been recognized as additional advantages (Andy et al., 2011).
Study The Effect Of Chicory (Cichorium Intybus, L.) Leaves Powder On Some Biochemical And Biological Parameters Of Hepatotoxicity Induced By Ccl4 In Rats

The present study aimed to assess the effect of different concentrations (2.5 , 5 and 10 %) of Chicory (Cichorium intybus) leaves powder (Ch.L.P.) on impaired liver function of injected rats with Carbon Tetrachloride (CCl4,. Twenty five mature albino male rats weighing (140±10g) were randomly divided into five groups (n=5) and fed on the basal diet. The first group: negative control and the other four groups were injected by Carbon Tetrachloride (CCl4) in paraffin oil 50% V/V (2ml/Kg. B.W) twice in a week for two weeks to induce hepatotoxicity. The second group ( positive control) the third, fourth and fifth groups were fed on the basal diet containing 2.5%, 5% and 10% of Chicory leaves powder respectively for 28 days. Serum liver enzymes, lipid profile, total protein, albumin, glucose, antioxidant liver enzymes (SOD, GPX and CAT) and hestopathological changes of liver tissues were examined and investigated, Also, phenolic compounds profile of (Ch.L.P.) was determined by HPLC. Obtain results of CCl4 treated rats compared to control (+ve) groups revealed that rats fed on 10 % (Ch.L.P.)recorded the significant lowest glucose level (p≤0.05). Antioxidant liver enzymes (SOD, GPX and CAT), were increased siginificantly in all treatment fed on ChLP . The significant increase in albumin and total protein in 10% fed group . Total serum biliruben recoded the lowest significant in 10% group. For serum liver Journal of Home Economics, Volume 28, December (4), 2018 2 enzymes (ALT, AST and ALP); the lowest significant values were noticed in 10% fed group . Lowest significant level of triglyceride and cholesterol were recorded in groups fed on 10% ChLP. The highest significant level of HDL-c was recorded for group fed on 10% ChLP. While, The lowest significant value of LDL-c and VLDL-c was recorded for rats fed on 10% ChLP . In conclusion, chicory plant leaves could be considered as powerful nutraceutical therapeutic agent for the treatment of hepatotoxicity induced by CCl4 in rats. All used concentrations in this study cause improvment in hepatotoxicity rats.
Theory and Practice of Neuromarketing: Analyzing Human Behavior in Relation to Markets

The presented paper deals with a comprehensive interpretation of the term neuromarketing, as a discipline that applies neuroscientific methods to analyze and to understand human behavior in relation to markets and market exchanges. Due to the topic, this paper presents mainly secondary data, next the questionnaire is used. We state that neuromarketing is a discipline that applies neuroscientific methods to analyze and to understand human behavior in relation to the markets and market exchanges. Each of the neuromarketing techniques measures different data and suits different purposes, with a combination of the most reliable results. The interest in the theoretical research of neuromarketing focuses on the consumer decision-making process. One of the main benefits of neuromarketing is the potential to measure accurate, objective data that can be used to make informed decisions in management practice. However, it is currently only a complement to other areas of marketing and will be beneficial if it is used to obtain otherwise inaccessible data. We are convinced that the existence of the Neuromarketing Center in the ITI of the Olomouc agglomeration will be a significant contribution to the development of the neuromarketing theory. Doi: 10.28991/esj-2021-01256 Full Text: PDF
Effectiveness of Management Accounting System in Public Healthcare Sector: An Empirical Investigation in Vietnam

Research aims: The purpose of this study is to investigate the impact of the decentralized structure on the effectiveness of MAS in the Vietnamese public healthcare sectors. Design/Methodology/Approach: Data collected from 165 respondents working at public healthcare organizations was used to test the proposed model. A PLS-SEM was used to assess the models. Assessment of common-method bias was also examined to ensure the findings' validity. Theoretical contribution/Originality: This study contributes to the MAS literature in Vietnam by extending previous studies' findings. This study also contributes to the contingency literature by assessing the effects of cartesian contingency mediation in MAS studies. Practitioner/Policy implication: This study provides some suggestions to practitioners, which strongly emphasizes the crucial role of the structure of healthcare organizations. Research limitation/Implication: The results subject to the limitation of generalizations and missing the pilot tests as well as the use of self-rating measuring performance.
Effect of Vitamin D Supplementation and Calcium in Reducing the Risk of Preeclampsia: Meta-Analysis

Background: Preeclampsia (PE) is a major complication in pregnancy and a major cause of maternal and fetal morbidity and mortality. Analysis of risk factors and prevention of pre­eclampsia are needed to reduce the adverse effects of preeclampsia. Important supplements during pregnancy to prevent the increase in blood pressure of pregnant women are Vitamin D and calcium. This study aimed to analyze the effect of vitamin D and calcium supplemen­tation on reducing the risk of preeclampsia. Subjects and Method: This study is a meta-analysis of a number of randomized controlled trials. The articles used in this study were obtained from several databases including PubMed, Google Scholar, Springerlink, and Sciencedirect. The articles used in this study were those published from 2002-2020. The article search was carried out by considering the eligibility criteria defined using the PICO model. P: Pregnant women, I: vitamin D and calcium, C: placebo, and O: preeclampsia. The keywords to find articles are as follows: "Vitamin D" OR "Calcium" OR "Vitamin D and Calcium" AND "preeclampsia" AND "Rando­mized Controll Trials". The articles included in this study are full text articles with Cross-sectional study design. Articles were collected using PRISMA flow diagrams. Articles were analyzed using the Review Manager 5.3. Results: A total of 9 articles were reviewed in this study. The meta-analysis showed that vitamin D supplementation reduced the risk of preeclampsia in pregnant women (RR= 0.45, 95% CI 0.32-0.63, p<0.001). The meta-ana­lysis of 8 articles also showed that calcium supple­mentation reduced the risk of preeclampsia in pregnant women with calcium (RR= 0.42; 95% CI= 0.31 - 0.57; p<0.001). This meta-analysis combines primary research from Iran, India, Bangladesh, South Africa, Cameroon, and Saudi Arabia. Conclusion: Vitamin D and calcium supple­mentation reduces the risk of preeclampsia. Keyword s : vitamin D, Calcium, preeclampsia, randomized controlled trial Correspondence: Fanny Kartika Fajriyani. Masters Program in Public Health, Universitas Sebelas Maret, Jl. Ir. Sutami 36A, Surakarta 57126, Central Java. Email: fannykfa9@gmail.com. Indonesian Journal of Medicine (2020), 05(04): 308-320 https://doi.org/10.26911/theijmed.2020. 05.04. 06.
A Method upon Deep Learning for Speech Emotion Recognition

Feature extraction and emotional classification are significant roles in speech emotion recognition. It is hard to extract and select the optimal features, researchers can not be sure what the features should be. With deep learning approaches, features could be extracted by using hierarchical abstraction layers, but it requires high computational resources and a large number of data. In this article, we choose static, differential, and acceleration coefficients of log Mel-spectrogram as inputs for the deep learning model. To avoid performance degradation, we also add a skip connection with dilated convolution network integration. All representatives are fed into a self-attention mechanism with bidirectional recurrent neural networks to learn long term global features and exploit context for each time step. Finally, we investigate contrastive center loss with softmax loss as loss function to improve the accuracy of emotion recognition. For validating robustness and effectiveness, we tested the proposed method on the Emo-DB and ERC2019 datasets. Experimental results show that the performance of the proposed method is strongly comparable with the existing state-of-the-art methods on the Emo-DB and ERC2019 with 88% and 67%, respectively. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium provided the original work is properly cited.
Financial Sustainability and Financial Performance: The Moderating Role of Type of Ownership in Pakistan

The study is conducted with the objective to investigate the impact of firm performance (FP) on Financial sustainability (FS) in a developing nation, Pakistan and additionally to see the moderating role of type of ownership i.e. Institutional Ownership (IO) or Managerial Ownership (MO) in the FP-FS relationship. Sample of the study included all the non-financial firms listed on Pakistan Stock Exchange PSX and period covered is from 2009-2018. In total there are 2734 observations. Empirical results of the study suggests that FP has a positive relationship with FS but the relation is not significant. Moreover, findings indicate this relationship is significantly positively moderated by Intuitional Ownership (IO) whereas the relationship is not significant under the moderation impact of Managerial Ownership (MO).