Aerodynamic Optimization of Induced Drag for Varying Angle of Attack
Authors: Sophie P. Jogi
Abstract:
Pan-tilt camera and it application is growing day-by-day. In the era of automation, it is required have an efficient surveillance system. However, machine learning or Artificial intelligence based further enhance it capability. Besides, control of camera utmost important to deploy such system. Here in this study, a pan-tilt camera system modeling and it methodology to calibrate proposed. A proper and appropriate intelligence through surveillance could help combat enemies and terminate the threat. The proposed project aims at creating a pan-tilt camera surveillance system with features of object detection and weapon trigger controlled manually from the control room situated far away.
Page: 1 – 5
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Enhancing Phase Stability of Ammonium Nitrate through Urea Nitrate Stabilization
Authors: Daniel K. Bradley
Abstract:
The present study has been aimed to investigate the stabilization effects provided by the addition of Urea Nitrate (UN) on the modification of phase (II) transition of Ammonium Nitrate (AN) and thus on its thermal decomposition behavior. Urea Nitrate was synthesized in the laboratory and was characterized to ascertain its structural ingenuity. Urea Nitrate was then co-crystallized with AN in three different weight percentages i.e. 3%, 6% and 10% for the preparation of Phase Stabilized Ammonium Nitrate (PSAN). The thermal decomposition patterns of virgin AN and prepared samples of PSAN were measured and compared using Differential Scanning Calorimetry (DSC) to detect the efficiency of UN as a potential stabilizer. The present study indicated that UN, in low weight percentages, was able to deliver a noteworthy postponement in the onset temperature range of near-room-temperature phase modification (III) of AN occurring at around 32°C–34°C. Also, co-crystallization of UN with AN significantly modified the hygroscopic tendency of the prepared co-crystals.
Page: 6 – 12
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Surveying Network Security Threats: Issues and Challenges in the Digital Age
Authors: Carlos M. Herrera
Abstract:
Pan-tilt camera and it application is growing day-by-day. In the era of automation, it is required have an efficient surveillance system. However, machine learning or Artificial intelligence based further enhance it capability. Besides, control of camera utmost important to deploy such system. Here in this study, a pan-tilt camera system modeling and it methodology to calibrate proposed. A proper and appropriate intelligence through surveillance could help combat enemies and terminate the threat. The proposed project aims at creating a pan-tilt camera surveillance system with features of object detection and weapon trigger controlled manually from the control room situated far away.
Page: 13 – 20
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Leveraging Machine Learning for Multi-lingual Sentiment Detection
Authors: Sofia Lopez, Marcelo Ruiz& Ana Torres
Abstract:
Sentimental Analysis or Opinion Mining is increasing in today’s world. As every industry, require the opinion or review from the end-user or consumers to improve the quality of their product or service. The previous research work has been done on sentimental analysis is only limited to English data analysis and secondly the on the enhancement of accuracy by using different algorithm. In this research we overcome both the issues by developing a language-independent system using Google translator API and proposed a solution with Stanford NLP which the modeling of the English language. The simulation of the proposed work has been done in two stages. First, all the tweets are translated into a single language. English is used as the target language here. To make the research database broader, we have used the Live Google translation API that will convert all the tweets into the English language. Then, emoticons, slang language, misspellings, email id, URLs, etc. are forced to preprocessing before feature extraction. In the second phase, the stop words, which do not contribute towards the sentiment of the tweets, are removed, and the tweets are converted into feature vectors. This feature vector is then used in the classification algorithm. The results are compared using two classification techniques, i.e., Naïve Bayes classification and RNN.
Page: 21 – 30
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Reclaiming Female Sexuality and Identity: A Critical Feminist Study of Eunice De Souza and Sujata Bhatt’s Poetry
Authors: Sébastien Dubois
Abstract:
Cultural studies have changed the understanding and research paradigms of a literary text. A text put forwards multiple issues concerning identity, culture and self. The research framework of identity transforms with the context of time and society. The concept of self and identity emerged as the most challenging in the recent academic research. It has been analysed in the literary text from the perspectives of postcolonial, postmodern, post structural, feminism and post feminism in the emerging writings across the globe. The present research paper proposes to explore the notion of identity from the lens of feminist and post feminist contours in the select poems of Eunice de Souza and Sujata Bhatt. The paper is an attempt to explore the patriarchal precarious existence of female sexuality, body and identity comparatively in developing writings of Indian women. The paper also endeavours to investigate the psychological and emotional state of female as conceptualized the select poets.
Page: 31 – 42
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Examining Religious Influence on Maternal Support Networks in Low-Fertility Countries
Authors: Dr. Tariq Iqbal
Abstract:
In low fertility settings, religious people tend to have larger families than non-religious people. One way religious individuals may achieve larger relative family sizes is through support from their families. In this paper, we investigate the relationships between religiosity, kin contact, allomaternal investment from relatives, and fertility in two high income low fertility settings: the United Kingdom and the United States. Data for this pre-registered research come from an online survey of 609 women living in the US and 919 women living in the UK, recruited through Prolific, who answered questions about their religious practices, childbirth histories, social networks, and allomaternal networks. We find that, compared with less religious peers, more religious women: 1) have more geographically diffuse kin networks (particularly in the UK) but have social networks that are equally kin-dense; 2) receive more allomaternal support from kin beyond their partner, particularly help with household tasks, though the countries differ in the exhibited relationship between religiosity and partner support; and 3) have higher fertility in both countries. We do not find strong evidence for a mediating role of allomaternal support on the relationship between religiosity and fertility. Our study highlights important variation in the relationship between religion and fertility across two high income low fertility countries and raises new questions about the role that religion plays in allomaternal support networks in these settings.
Page: 43 – 81
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A Review of Green Value Management Strategies for
Sustainable Project Delivery
Authors: Dr. Felix Bauer
Abstract:
As sustainability increases in significance for the project management sector, the need to apply management techniques to sustainability objectives grows. However, generic tools to measure the performance of sustainability objectives and initiatives are scarce.
Traditional project performance measurement uses the Earned Value Management ( E V M ) method to measure time, cost and scope. The objective of this paper is to investigate whether EVM can be adapted to measure the performance of sustainability goals in projects.
By means of two Systematic Literature Reviews (SLR), this paper investigates the bodies of knowledge of ‘sustainability in Project Management’ and ‘Earned Value Management’. A total of 2.232 publications from 6 databases from both fields were identified through the two SLM and analysed via two-stage screening process. The review found that the project control method EVM has not yet been used to track the performance of sustainability in projects. We therefore developed the conceptual framework for ‘Earned Green Value Management’. Thus concluding, by incorporating sustainability in the business case (instead of scope), extending monitoring into the product life cycle, addressing the triple bottom line, and translating generic sustainability indicators into monetary terms to express value created through improved resource performance (instead of expenses), EVM can be translated and applied to the measurement of project sustainability and performance.
The conceptual framework presented herein lays the theoretical groundwork for a new project management tool to track the attainment of sustainability goals in projects. It contributes to the current research in sustainable project management by bridging a gap between traditional tools and normative topics on an operational level.
Page: 82 – 131
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Acoustic Response of Metamaterials Formed by Phononic Crystals with Local Resonance
Authors: Dr. Pilar González-Santos, Dr. Rafael Jiménez-Martínez, Prof. Luis García-López & Dr. Carlos Fernández-Ruiz
Abstract:
The emergence of materials artificially designed to control the transmission of waves, generally called metamaterials, has been a hot topic in the field of acoustics for several years. The design of these metamaterials is usually carried out by overlapping different wave control mechanisms. An example of this trend is the so-called Locally Resonant Sonic Materials, being one of them the Phononic Crystals with local resonant structure. These metamaterials are formed by sets of isolated resonators in such a way that the control of the waves is carried out by resonances and by the existence of Bragg bandgaps, which appear due to the ordered distribution of the resonators. Their use is based on the creation of resonance peaks to form additional non-transmission bands mainly in the low frequency regime, usually below the first Bragg frequency. However, the manipulation of these metamaterials must be done with care because some interference effects may appear between the resonances and the Bragg bandgaps when they are working in nearby frequency ranges. In this work, using a periodic structure formed by Helmholtz resonators, we report on the existence of these interferences and their physical principles, at the same time that we present possible solutions to mitigate them. To this end, we have developed numerical models based on the finite elements method, and the results have been successfully verified by means of accurate experimental results obtained under controlled conditions.
Page: 132 – 139
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Novel Precursors for Bioactive Molecules: Synthesis
and Characterization of 3-Phosphonocoumarins and
1,2-Benzoxaphosphorins
Authors: Ivana D. Petrova, Marina V. Ivanova & Elena T. Georgieva
Abstract:
Coumarins are an important class of natural heterocyclic compounds that gained considerable synthetic and pharmacological interest due to their various biological activities. This review emphasizes on the synthetic methods for the preparation of dialkyl 2-oxo-2H-1-benzopyran-3-phosphonates and alkyl 1,2-benzoxaphosphorin-3-carboxylates. Their chemical properties as acceptors in conjugate addition reactions, [2+2] and [3+2] cycloadditon reactions are discussed.
Page: 140 – 180
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Improving Hydrogen/Bromine Flow Battery Efficiency with Crossover-Tolerant Platinum Catalysts
Authors: Jamal Hadi, Lasha Kandelaki, Elena Voskanyan, Thomas Ainsley, Dmitri Novak, Luciana Salazar & Rafael Leclerc
Abstract:
The hydrogen-bromine redox flow battery’s(H2-Br2 RFB) advantages of high energy capacity, high round-trip conversion efficiency and low cost, make it an optimal candidate for large-scale energy storage systems. The crossover of bromide species through the membrane degrades the performance of the H2-Br2 RFB by poisoning the catalyst responsible for the hydrogen evolution and oxidation reactions. Herein we propose the new concept of a selective catalyst coating layer that mitigates the effect of bromide crossover. The polymerization of dopamine on the catalyst surface yields a nanoscale conformal polydopamine layer which acts as a semi-permeable barrier to block bromide species. The H2-Br2 RFB with the coated catalyst shows a low capacity fading of 6% at 300 mA cm-2 after exposure to 4.5 M charged electrolyte for 2 hours. Even the beginning of life polarization curves show the benefit of catalyst coating with a high peak power of ~550 mW cm-2 . Hence, the catalyst coating opens a way to solve the crossover issue in H2-Br2 RFB technology.
Page: 181 – 202
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Numerical Investigation of Crack Behavior in Concrete Under Different Load Conditions
Authors: Elias R. Pereira, Mariana Santos, Sofia Ferreira
Abstract:
Concrete is a brittle material with high compressive strength, low tensile strength and poor toughness, where cracks of different degrees and different forms can be developed, which compromises the durability and the lifetime of concrete structures. In this article we present a numerical simulation that allows describing and studying the damage of concrete works subjected to various stress types. In this study, the propagation of cracks in the concrete was analyzed, which requires having a thorough knowledge of the mechanical behavior of the material. The analysis is carried out by using fracture criteria while being based on the determination of the critical stress intensity factors, for three-point bending concrete beam that subjected to a various stress types. The analysis is carried out in a three – dimensional medium by using the ANSYS software. The results obtained are compared with the analytical solutions. The results show that; (i) with an increase in beam size, the stress intensity factor increases, (ii) with an increase in width of beam, the stress intensity factor decreases.
Page: 203 – 213
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Strengthening Teacher Professionalism Through Reflective Teaching Approaches
Authors: Mariana F. Silva & Camila R. Oliveira
Abstract:
One of the core components of teacher knowledge is reflective knowledge which is defined as the teacher’s capacity to reflect on and assess his or her own practice. In other words, as teachers, they should be able to do reflective teaching. Reflective teaching is the teacher’s thinking about what happens in the classroom lessons, and thinking about alternative means of achieving goals and aims (Cruickshank and Zeichner in Richard and Nunan 1990). This paper discusses reflective teaching as a means of professional development.
Page: 214 – 220
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