bluuebunny/crossref_metadata_2025 huggingface dataset:
E-Water Level: Educational Kit For Testing Student Knowledge on Transient Response using Water Level Control
Authors:   Faculty of Mechanical & Manufacturing Engineering Technology, Universiti Teknikal Malaysia Melaka, Melaka, MALAYSIA., Azmi Ezzatul Farhain , Ishak Muhammad Firdaus ,   Faculty of Electrical Engineering, Universiti Teknologi MARA (UiTM), Cawangan Johor, Kampus Pasir Gudang, Johor, MALAYSIA., Samsudin Adam ,   Faculty of Electrical & Electronic Engineering Technology, Universiti Teknikal Malaysia Melaka, Melaka, MALAYSIA., Abidin* Amar Faiz Zainal ,   Faculty of Electrical & Electronic Engineering Technology, Universiti Teknikal Malaysia Melaka, Melaka, MALAYSIA., Kadiran Kamaru Adzha ,   Faculty of Electrical Engineering, Universiti Teknologi MARA (UiTM), Cawangan Johor, Kampus Pasir Gudang, Johor, MALAYSIA.
Published: October 2019

Control Principle course is a part of syllabus in the diploma or degree in Electrical Engineering programme where students are exposed to topics such as time response analysis. One of the topics in this course is Transient Response analysis where it requires students to calculate the characteristic of the response based on set of formula. One of the difficulty encounters in delivering this topic is students having difficulty to relate the theory with the application as most theoretical part of this topic does not explain on how the transient response graph is obtained in the first place. In order to address this problem, this paper proposed E-Water Level educational kit that can be used by student in order to understand independently the transient response analysis by applying theory on the water level control application where the student knowledge on Transient Response parameters are tested, namely the delay time, rise time, damping ratio and setting time. The system consists of Arduino Microcontroller, water tank, water pump, relay, ultrasonic sensor and electronic display. The novelty of this educational kit is that the educational kit is adaptive in bridging the gap between theory and application in which the data is generated by real application of water level and the answers for the questions are automatically generated based on the data obtained. Thus, each student will experience different set of question.
Calibrator for Temperature Measurement Device with Raspberry Pi-Based Interface
Authors:   Department of Electrical Engineering, Universitas Muhammadiyah Yogyakarta, Yogyakarta, Indonesia., Iswanto*  , Megantoro Prisma ,   Department of Electrical Engineering and Information Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia., Senzas Devita Via ,   Department of Electrical Engineering and Informatics, Universitas Gadjah Mada, Yogyakarta, Indonesia.
Published: October 2019

The article discuss about designing a Raspberry Pi 3-Based OHP Temperature Calibrator. This device used to callibrate temperature measurement device with GUI-based (Graphic User Interface). The device has been programmed on Raspberry Pi 3 with Python programming language. This research was done by and recycled over head projector (OHP), designing and conducting sensory characterization analysis and uncertainty analysis on temperature calibrator. The method used in this research is heuristic method, where this method is used in sensor characterization analysis. After the characterization done, obtaining the specifications of each sensor, temperature calibrator instrument then tested to determine the amount of uncertainty of the instrument that has been designed. The result of the homogeneity for fifth test points are 6 Â°C, 5 Â°C, 5 Â°C, 8 Â°C, and 16 Â°C. The results of the sensor characterization test show that the accuracy and precision of all sensors are more than 99%. The sensitivity values for the four sensors are 11.68 mV /Â°C, 12.34 mV /Â°C, 11.24 mV /Â° C, and 11.50 mV /Â° C. The correlations and linearity of all sensors are more than 97% also. And the response of time of the four sensors to the heat source are 1.61 Â°C/s, 1.13Â°C/s, 1.17 Â° C / s, 1.00 Â°C/s. the uncertainties for sensor 1 are (132 Â± 0.7)Â°C, sensor 2 (132 Â± 0.6)Â°C, sensor 3 (132 Â± 0.7)Â°C, and sensor 4 (132 Â± 0.7)Â°C. Based on the research, it can be concluded that Raspberry Pi based temperature calibrator instrument has a good accuracy level, and the effective temperature for calibration is at maximum temperature, that is 132Â°C.
Line Bot Chat Filtering using Naïve Bayes Algorithm
Authors:   Informatics Department, Universitas Multimedia Nusantara, Tangerang, Indonesia., Elvina* Nathania , Rusli Andre ,   Informatics Department, Universitas Multimedia Nusantara, Tangerang, Indonesia., Hansun Seng ,   Informatics Department, Universitas Multimedia Nusantara, Tangerang, Indonesia.
Published: October 2019

Instant messaging has changed and simplified the way people communicate, whether in professional or personal life. Most communication is done through instant messaging, and it is common for people to miss important information. This is due to the huge amount of incoming message notifications, so users tend to accidentally ignore them. This is also experienced by Universitas Multimedia Nusantara (UMN) student committees who communicate via LINE instant messenger. This research showed LINE bot was made by using the Naive Bayes algorithm to classify between important messages and unimportant messages on the committee group. The Naive Bayes algorithm is a classification algorithm based on probability and statistical methods. The Naive Bayes algorithm is chosen because it is widely implemented in spam filtering; the method is simple and has good accuracy. The classification process is done by calculating the probability of chat in each class based on the value of the word likelihood which generated in the training process. This research produces spam precision and spam recall as 94.2% and 95.6% respectively.
Novel Method for State Space Modeling of Full Bridge Converter
Authors:   Undergraduate Student, Institute of Technology, Nirma University, Ahmedabad, 382481, Gujarat, India., Kulkarni Aniruddh , Kapil* P. N. ,   Assistant Professor, Institute of Technology, Nirma University, Ahmedabad, 382481, Gujarat, India,
Published: October 2019

The requirement of converters is increasing with the increase in demand for the power conversion devices. For efficient power conversion, stability and time response of the system must be improved. For improving characteristics a mathematical model of the system must be determined. In this paper, an improvised state space model of full bridge converter is presented which can be used in converter design. This state-space model incorporates the non-idealities of the transformers like discharge time of primary inductance and secondary inductance as well as the wire resistance. The interdependency of the parameters affects the state space model of the converter compared to the ideal modeling. This variation in state space model of the converter has an impact on design of compensator which improves the system efficiency of the converter.
Digital-Toolkit for Promoting Tourist Destinations
Authors:   Department of Business Administration, Tallinn University of Technology, Tallinn, Estonia, Prokopenko* Olha , Larina Yaroslava ,   Department of Marketing and International Trade, National University of Life and Environmental Sciences of Ukraine, Kyiv, Ukraine, Chetveryk Olena ,   Department of Marketing and International Trade, National University of Life and Environmental Sciences of Ukraine Ukraine, Kyiv, Ukraine, Kravtsov Sergiy ,   Department of Tourism and Recreation, Kyiv National University of Trade and Economics, Kyiv, Ukraine, Rozhko Nataliya ,   Industrial Marketing Department, Ternopil Ivan Puluj National Technical University, Ternopil, Ukraine, Lorvi Iryna ,   Department of Marketing, Lutsk National Technical University, Lutsk, Ukraine
Published: October 2019

As a result of the active development of tourism in the world, an increasing number of destinations have become available for tourists. At the same time, due to the growing competition, the individuality of special places of recreation sharply decreases. In the face of global competition, when tourist destinations become easily replaceable, destination controls are included in this battle for the attention and resources of tourists. The destination is a complex product, and it is necessary to engage in marketing with the same efforts as enterprises are marketing their goods and services. Due to global digitalization, Internet marketing has long become an integral part of any effective marketing campaign. Determining the goals, methods for achieving them and choosing the right Internet marketing tools are one of the main steps on the path of promoting tourist destinations. The following digital Internet marketing tools can be distinguished: Website, Content Marketing, Search Marketing (including Search Engine Optimization, Search engine marketing), Internet Advertising, Email-marketing, Social Media Marketing (SMM), Mobile Marketing, Viral Marketing, Video Marketing, Voice Search, Audio Content, Influencers and micro-influencers, End-to-end analytics.Creating an ideal digital marketing strategy is based on the use of a specific set of digital promotion tools. Along with the classic tools, such as website, e-mail marketing, SMM, SEO and SEM, content marketing, it is necessary to implement modern, rapidly gaining popularity in recent years: chatbots and instant messengers, optimization for voice search, video and audio content.
Effectiveness of Soursop Seed Extract (Annona muricata L) as a Natural Repellent on Aedes Aegypti
Authors:   Doctorate Program Environmental Science, Padang State University, West Sumatra Indonesia, Alhamda S. , Barlian E. ,   Professional in Environmental Science, Padang State University, West Sumatra Indonesia, Razak A. ,   Associate Professor in Environmental Science, Padang State University, West Sumatra Indonesia, Sari M. ,   Faculty of Public Health, University of Fort De Kock Bukittinggi, West Sumatra Indonesia, Herawati N. ,   Polytechnic of Health Padang, West Sumatra Indonesia
Published: October 2019

Background: Dengue Hemorrhagic Fever (DHF) is a disease caused by the dengue virus. City Regencies in Indonesia contracted DHF in 2014 amounting to 84.74%, 2015 amounted to 86.77%, and in 2016 amounted to 90.08%. Soursop plants can act as a repellent (insect repellent). The study aimed was to determine the effectiveness of soursop seed extract (Annona muricata L) as a natural repellent against Aedes aegypti mosquitoes. Method: The study was experimental with the independent variable concentration of soursop seed extract (Annona muricata L) and the dependent variable was Aedes aegypti mosquito that perched on the hand which had been sown with soursop seed extract (Annona muricata L). The sample of this study was 500 Aedes aegypti mosquitoes. This study used 5 concentrations and 5 repetitions for 6 hours of observation. The study was conducted on August 6-10 2018 starting at 08.30-13.30. Result: This study indicate that the concentration that concentrations of 20%, 40%, 60%, 80% and 100% have a mean of 75.2%, 90.8%, 93.5%, 95% and 97.7%, respectively. Based on the results of the ANOVA test, the results of the V-watch observation were obtained 61.60%, 85.07%, 89.89%, 92.88%, and 95.42% respectively. Conclusion: From the results obtained, the concentration of effective soursop seed extract is a concentration of 80% and 100% with a protection power of> 90%. The most effective concentration is 100%. It is recommended to the public to use soursop seed extract as a natural repellent to reduce the use of chemicals containing DEET (N, N-diethylmetatoluamide).
Design and Analysis of Frequency Reconfigurable Microstrip Patch antenna for Multi Band Operations using PIN Diodes
Authors:   Department of E&CE, GM Institute of Technology, Davangere, Davangere, India., Soloni* Rajendra , H S Rajappa ,   Department of E&CE, GM Institute of Technology, Davangere, Davangere, India., D N Chandrappa ,   Department of E&CE, PESITM, Shivamogga, Shivamogga, India
Published: October 2019

Multiband reconfigurable patch antenna plays a vital role in wireless communication applications. By changing the current path on the patch a multiband reconfigurable antenna can be achieved. A simple multiband frequency reconfigurable microstrip patch antenna is presented in this paper. The proposed antenna structure is simulated in CST microwave studio. This antenna operates between 1.3 to 5.6 GHz with more than fifteen different frequencies. The antenna is analyzed for four different configurations. The designed antenna is resonating at five different frequencies (1.45 GHz, 2.36 GHz, 3.09 GHz, 3.6 GHz and 5.45 GHz) when both PIN diodes are ON. When PIN diode D1 is ON and D2 is OFF the antenna is resonating at 1.4 GHz, 2.22 GHz, 2.5 GHz, 3.08 GHz and 3.59 GHz. When D1 is OFF and D2 is ON the antenna is resonating at 2.34 GHz, 3.2 GHz, 3.62 GHz and 5.38 GHz frequencies. The slotted antenna or when both PIN diodes are in OFF condition antenna is resonating at 2.22 GHz, 2.49 GHz, 3.21 GHz, 3.6 GHz and 5.42 GHz. For each configuration the antenna parameters like gain, VSWR, directivity and radiation patterns are analyzed.
Improvement of a Security Enhanced One-time Mutual Authentication and Key Agreement Scheme
Authors:   Vice Rector for Scientific Affairs, Tashkent University of Information Technologies named after Muhammad al-Khwarizmi, Tashkent, Uzbekistan., Akhmatovich* Tashev Komil , Turakulovich Khudoykulov Zarif ,   Cryptology department, Tashkent University of Information Technologies named after Muhammad al-Khwarizmi, Tashkent, Uzbekistan., Tileubayevna* Arzieva Jamila ,   Department of Applied Mathematics Karakalpak State University, Uzbekistan.
Published: October 2019

So far, many one-time password based authentication schemes have been proposed; however, none is secure enough. In 2004, W.C.Ku proposed hash-based strong-password based authentication scheme without using smart card that is vulnerable to the password guessing attack, not achieving mutual authentication and key agreement. In this paper, we propose a new improved version of Ku’s scheme that is eliminated these weaknesses.
Perspective on the Impact of the Second Language on the Underprivileged (Rural & Urban) Engineering Students of Madhya Pradesh
Authors:   Associate Professor at VIT Bhopal University, Madhya Pradesh., Bhatt* Dr. Vinod , Yadav Dr. Anita ,   Sr. Assistant professor at the Department of SASL of VIT University, Bhopal (India).
Published: October 2019

India is a young country with lots of opportunities and possibilities to flourish and enjoy the worldwide information. The youth, particularly, in India is growing up within a world of inescapable technology as the first generation learners. The medium of exchanging the information has changed; now the information exchange takes place through Facebook, Twitter, Emails, YouTube, WhatsApp and so on, to communicate and disseminate information and knowledge with others. This contemporary generation wants to transgress themselves from the local linguistic barriers and their chief aim is to get maximum benefit of the opportunities available in the market. They wish to improve their communication skills as the world has become global market due to the needs and changes in the broad field of economy, business, education and other thing. The idea of writing this paper is a result of a speculation made by my students of both undergraduate and post graduate level in university. I conceptualized this paper based on my classroom teaching experience at university level with a diversified student group. I tried to investigate their social, economic, cultural and psychological attitude of their early life and its effect in their stimulation of second language acquisition. I, through this paper, illustrate how demographic conditions affect the second language learning process.
Energy Map Generation in Wireless Sensor Network using Grey System Theory
Authors:   M, Tech. CSE, NIT Hamirpur, India., Kumar* Rajeev , Chauhan Naveen ,   Ph.D, CSE, NIT Hamirpur, India., Chand Narottam ,   Associate Professor,Department of CSE, NIT Hamirpur, India.
Published: October 2019

Wireless sensor nodes are deployed in hostile environment as applications of wireless sensor network. Battery is the source of energy of these sensor nodes. Replacing their batteries is not feasible due to their deployment in hostile area. In the proposed research, main objective is to extend the lifetime of network by predicting the residual energy of sensor nodes. For enhancing the lifetime of the wireless sensor network, it is necessary to keep track of residual energy level. Tracking residual energy status of sensor nodes is helpful in creating the energy map for network. In this paper, an approach to predict the residual energy level and to generate energy map for wireless sensor network is proposed. Proposed algorithm is used with clustering algorithm. Simulation results show that proposed algorithm reduces number of the messages transmitted which intern increases network lifetime.
Poor Shape Precision of Rotational Bodies
Authors:   Kurgan State University, Kurgan, Russia., Ovsyannikov* V.E. , Shpitko G.N. ,   Kurgan State University, Kurgan, Russia., Ziganshin R.A. ,   Federal State Budget Educational Institution of Higher Education «Industrial University of Tyumen» (branch office in Surgut), Tyumen, Russia., Nekrasov V.I. ,   Federal State Budget Educational Institution of Higher Education «Industrial University of Tyumen» (branch office in Surgut), Tyumen, Russia.
Published: October 2019

This article discusses the issues of improvement of estimation of shape defects of cylindrical parts in transversal cross section. Texture constituents of shape defects are estimated using Fourier analysis. It has been demonstrated that single constituents can be analyzed by Fourier transformation together with filtration of error of locating. Using the developed software, a contactless design is proposed for measurements and analysis of the aforementioned parameters.
A Network Forensic Framework for Port Scan Attack based on Efficient Packet Capturing
Authors:   Ph.D Research Scholar, Department of CSE, Maulana Azad National Institute of Technology, Bhopal, India., Makwana* Rajni Ranjan Singh , Tomar Dr. Deepak Singh ,   Associate Professor, Department of CSE, Maulana Azad National Institute of Technology, Bhopal, India.
Published: October 2019

In the last two decades the networks become larger in scale, more complex in structure and more diversified in traffic. Which generate huge amount of network packets such as TCP, UDP and HTTP etc. Log files are repository for captured packets and play a vital role in investigation. However, a significant and obvious limitation of current packet logging is that, data storage volume increases rapidly depending on factors such as network bandwidth and the number of points in the network that need to be tapped. Forensic investigator needs to back up these recorded data to free up recording media and to preserve the data for future analysis. The objective of the proposed work is to build a network forensics framework that precisely scrutinizes only the relevant packets .In this work, a network forensic framework is developed subjected to port scanning attack to mitigate evidence gathering challenges faced by forensic investigator. It captures and processes only fine-grained evidences present in the network traffic stream. Moreover, in the captured relevant log, attack specific discovery is carried out to mine the exact packets utilized to execute the network attack. Hypotheses being developed to validate each machine against attack specific criteria’s. Only those machine who full fill the criteria will be scrutinizes for further analysis. To test and validate the effectiveness of the proposed framework two scenario have been developed, It is observed that developed system preciously securitizes the attack patterns and improved decrement in the log size is observed for both scenario developed that is about 93.12% and 95.65% respectively. It is also observed that only 6.09% and 1.93% of total traffic being scrutinized for NULL, FIN and XMAS attack in scenario 1 and 2 respectively. Similarly 19.88% and 13.42% packets of total packets are scrutinized for TCP Connect and SYN (Half open) scanning variant in scenario 1 and 2 respectively.
Performance Analysis of Various Routing Protocols for VANET Environments
Authors:   Associate Professor, Sri Shakthi Institute of Technology, Coimbatore, TamilNadu, India, Kumareshan* N. , Prakash N. ,   Assistant Professor, Kalaignar Karunanidhi Institute of Technology, Coimbatore, TamilNadu, India
Published: October 2019

Vehicular Adhoc Network (VANET) is a fast emerging and new technology that are derived from adhoc networks to provide intelligent vehicle to vehicle communication and to improve the road safety and other on road facilities. VANETs are distinct from other networks in terms of high speed movements of vehicles, unpredictable nature of vehicular density over time and specific mobility patterns associated with different scenarios. Hence designing a suitable routing protocol for VANET applications is a very critical and specific task and it is different from that of MANETs even though VANETs are derivatives of the former. In this work we discuss and compare the effectiveness of routing protocols such as, AODV, DSR and DYMO with respect to three parameters namely, throughput, average end-end delay and average jitter. The simulations were carried out in Qualnet 5.0 network simulator. From the obtained results it is concluded that DYMO edges out the other two protocols in terms of the above mentioned metrics when it comes to VANET scenarios.
Technology-Assisted Teaching Aids in Teaching and Learning: Evidence from the Malaysian Tahfiz Ulul Albab Model (TMUA)
Authors:   School of Education and Modern Languages, Universiti Utara Malaysia, Kedah, Malaysia., Haron* Muhd Zulhilmi , Othman Mohamad Khairi Haji ,   School of Education and Modern Languages, Universiti Utara Malaysia, Kedah, Malaysia., Awang Mohd Isha ,   School of Education and Modern Languages, Universiti Utara Malaysia, Kedah, Malaysia.
Published: October 2019

The use of state-of-the-art teaching aids in teaching and learning activities (T&L) had been proven in enhancing teachers’ teaching effectiveness in the classroom. This study aims to examine the level of technology usage among teachers and students in the Tahfiz Ulul Albab Model (TMUA) program as well as teachers' perception on technology usage among teachers in the TMUA program based on 21st Century In-Service Training (LADAP PAK21). A total of 30 teachers and 100 students were selected as respondents in this study. Data analysis was performed using Statistical For Social Science (SPSS) Version 22.0 software. The findings show that the level of technology-assisted teaching aids usage is moderate to high. However, there is no difference among teachers who follow LADAP PAK21 towards technology-assisted teaching aids usage. The findings of this study show that although teachers have a positive perception of the importance of u technology usage, the level of usage is still at a moderate level. This shows that the level of awareness and encouragement in the usage of technology-assisted teaching aids needs to be increased.
Acumulação Sistêmica e Perspectiva Brasileira: uma análise sobre as visões de Giovanni Arrighi e de Celso Furtado
Authors: Brocco Pedro , Rached Gabriel
Published: October 2019

O trabalho pretende analisar o percurso trilhado por Giovanni Arrighi em duas de suas principais obras (O Longo Século XX e Caos e Governabilidade no Moderno Sistema Mundial), levando em conta a tradição formada pelos teóricos do sistema-mundo (Arrighi, Wallerstein et. al.) e articular sua teoria com a obra de Celso Furtado, especificamente sobre a posição do Brasil nos ciclos de acumulação sistêmica. O esforço se justifica pela pertinência da análise do caso brasileiro pelo ponto de vista da perspectiva da acumulação sistêmica em cotejo com a obra de Celso Furtado, bem como pelo estudo acerca de uma possível afinidade entre a perspectiva de análise de Celso Furtado e a da Teoria do Sistema-Mundo. 
Palavras-chave: Acumulação primitiva; ciclos de acumulação sistêmica; Giovanni Arrighi; Celso Furtado.
 
 
Abstract
The study aims to analyze the path of Giovanni Arrighi in two of his major works (The Long Twentieth Century and Chaos and Governance in Modern World System) as well as the tradition formed by the theorists of the world system (Arrighi, Wallerstein et. al.) and to articulate his theory with the work of Celso Furtado, specifically about Brazil's position in the systemic cycles of accumulation, in a historical perspective. The effort is justified by the pertinence of the analysis of the brazilian case on the perspective of the systemic accumulation with the work of Celso Furtado, as well as by the study of a possible affinity between the analytical perspective of Celso Furtado and of the World System Theory.
Keywords: Primitive accumulation; cycles of hegemonic accumulation; Giovanni Arrighi; Celso Furtado.
 
Recebido em: julho/2106;Aprovado em: março/2017.
Colaboradores
Authors: Geraldello Camilla Silva
Published: October 2019

Amanda Almeida Domingues  Annita Deloris Montoute  Antônio Walber Muniz  Bianca Viana Thomaz  Gustavo Erler Pedrozo  Leonardo Carvalho Leite Azeredo Bandarra  Mauri da Silva  Patrícia Nabuco Martuscelli  Patricia Vilarinho Tambourgi  Paulo Henrique Ribeiro Neto  Regiane Nitsch Bressan  Taís Vasconcelos Cidrão
One Belt, One Road: a iniciativa chinesa de infraestrutura e a sua repercussão no BRICS
Authors: Gualberto do Nascimento Lucas , Bruckmann Maynetto Monica Esmeralda
Published: October 2019

O estudo pretende analisar a iniciativa chinesa de infraestrutura, chamada Belt and Road Initiative (B&R), ou One Belt, One Road (OBOR), mais conhecida como “A Nova Rota da Seda”, lançada oficialmente em 2013; e a partir de uma visão de expansão da influência chinesa tanto na economia como na política mundial, com o apoio de novas plataformas de cooperação entre países emergentes, como o BRICS. Ademais, o trabalho também explora as iniciativas globais chinesas de aproximação político-econômica, de maneira a influenciar o cenário político-econômico dos seus parceiros estratégicos no continente eurasiático expandido, na África e na América do Sul. Assim, é possível identificar as iniciativas e estratégias chinesas para a expansão da sua influência, a partir do incentivo à expansão econômica, junto a uma rede de fontes de financiamento com apoio do capital chinês; e, portanto, a atração de potenciais parceiros em suas zonas de influência imediata e transcontinental, em uma expansão planejada para o oeste. Por fim, é avaliado como o OBOR pode influenciar o BRICS e seus membros no fortalecimento do seu projeto de cooperação e benefício mútuos, a partir da ampliação da sua infraestrutura interna, promovendo mais uma aproximação física como nova etapa da crescente interação entre seus membros.

 

 

Abstract: This study aims to analyze the Chinese infrastructure initiative called the Belt and Road Initiative (B&R), or One Belt, One Road (OBOR), better known as "The New Silk Road", officially launched in 2013; and from a vision of expanding Chinese influence in both the economy and world politics with the support of new platforms of cooperation among emergent countries, such as the BRICS. In addition, the paper also explores the global Chinese political-economic approaches in order to influence the political-economic scenario of its strategic partners in the expanded Eurasian continent, Africa, and South America. Thus, it is possible to identify Chinese initiatives and strategies for expanding its influence, from the initative for economic expansion, to a network of Chinese-funded finance sources; and therefore the attraction of potential partners in zones of immediate and transcontinental influence, in a planned expansion to the west. Finally, it is evaluated how OBOR can influence BRICS and its members in strengthening its project of cooperation and mutual benefit, by expanding its internal infrastructure, promoting a more material cooperation as a new stage of the growing interaction among its members.

Keywords: Chinese foreign policy; China and OBOR; BRICS; Geopolitics.

 

 

Recebido em: março/2018.Aprovado em: fevereiro/2019.
hegemon’s outside option: mega-regional trade agreements and United States trade policy
Authors: Martins Fernanda de Castro Brandão
Published: October 2019

The United States is facing growing challenges to the advancement of its interests in the World Trade Organization. The assertiveness of emerging countries in advancing their interests in the Doha Round made the achievement of a deal almost impossible. Slow progress is being made (the Trade Facilitation Agreement, for example), but no broad and significant trade deal has been reached so far. There are ongoing suggestions that the Doha round should be abandoned for good. The TPP and TTIP represented two shots the United States has taken to advance its trade interests outside the scope of the WTO, escaping possible challenges imposed by emerging countries. The irony behind this is that the trade regime in force was created by the United States at the height of its hegemony. The questions driving this paper are: Is this option for trade agreements related to American hegemonic decline? And to what extent does this option weaken the weaken the multilateral trade regime embodied in the WTO? There is a brief discussion about the future of this strategy under Trump’s presidency, who has a different stance regarding regional trade agreements.
 
 
Recebido em: maio/2018.Aprovado em: janeiro/2019.
Formation of alkyne-bridged ferrocenophanes using ring-closing alkyne metathesis on 1,1’-diacetylenic ferrocenes
Authors: Bittner Celine , Bockfeld Dirk , Tamm Matthias
Published: October 2019

Novel alkyne-bridged ferrocenophanes [fc{CO2(CH2)nC≡}2] (2a: n = 2; 2b: n = 3) were synthesized from the corresponding terminal diacetylenic ferrocenes [fc{CO2(CH2)nC≡CH}2] (1a: n = 2; 1b: n = 3) through ring-closing alkyne metathesis (RCAM) utilizing the highly effective molybdenum catalyst [MesC≡Mo{OC(CF3)2CH3}3] (MoF6; Mes = 2,4,6-trimethylphenyl). The metathesis reaction occurs in short time with high yields whilst giving full conversion of the terminal alkynes. Furthermore, the solvent-dependant reactivity of 2a towards Ag(SbF6) is investigated, leading to oxidation and formation of the ferrocenium hexafluoroantimonate 4 in dichloromethane, whereas the silver(I) coordination polymer 5 was isolated from THF solution.
Radiative Transfer with POLARIS. II. Modeling of Synthetic Galactic Synchrotron Observations
Authors: Reissl Stefan , Brauer Robert , Klessen Ralf S. , Pellegrini Eric W.
Published: October 2019

We present an updated version of POLARIS, a well-established code designated for dust polarization and line radiative transfer (RT) in arbitrary astrophysical environments. We extend the already available capabilities with a synchrotron feature for polarized emission. Here, we combine state-of-the-art solutions of the synchrotron RT coefficients with numerical methods for solving the complete system of equations of the RT problem, including Faraday rotation (FR) as well as Faraday conversion (FC). We validate the code against Galactic and extragalactic observations by performing a statistical analysis of synthetic all-sky synchrotron maps for positions within the Galaxy and for extragalactic observations. For these test scenarios we apply a model of the Milky Way based on sophisticated magnetohydrodynamic simulations and population synthesis post-processing techniques. We explore different parameters for modeling the distribution of free electrons and for a turbulent magnetic field component. We find that a strongly fluctuating field is necessary for simulating synthetic synchrotron observations on small scales, we argue that FR alone can account for the depolarization of the synchrotron signal, and we discuss the importance of the observer position within the Milky Way. Altogether, we conclude that POLARIS is a highly reliable tool for predicting synchrotron emission and polarization, including FR in a realistic galactic context. It can thus contribute to a better understanding of the results from current and future observational missions.
X-Ray Spectral Variations of Synchrotron Peak in BL Lacs
Authors: Wang Yijun , Zhu Shifu , Xue Yongquan , Gu Minfeng , Weng Shanshan , Le Huynh Anh N.
Published: October 2019

The spectral energy distribution of blazars around the synchrotron peak can be well described by the log-parabolic model that has three parameters: peak energy (E
p), peak luminosity (L
p), and the curvature parameter (b). It has been suggested that E
p shows relations with L
p and b in several sources, which can be used to constrain the physical properties of the emitting region and/or acceleration processes of the emitting particles. We systematically study the E
p–L
p and E
p–(1/b) relations for 14 BL Lac objects using the 3–25 keV RXTE/PCA and 0.3–10 keV Swift/XRT data. Most objects (9/14) exhibit positive E
p–L
p correlations, three sources show no correlation, and two sources display negative correlations. In addition, most targets (7/14) present no correlation between E
p and 1/b, five sources pose negative correlations, and two sources demonstrate positive correlations. 1ES 1959+650 displays two different E
p–L
p relations in 2002 and 2016. We also analyze E
p–L
p and E
p–(1/b) relations during flares lasting for several days. The E
p–L
p relation does not exhibit significant differences between flares, while the E
p–(1/b) relation varies from flare to flare. For the total sample, when L
p < 1045 erg s−1, there seems to be a positive E
p–L
p correlation. L
p and the slope of E
p–L
p relation present an anticorrelation, which indicates that the causes of spectral variations might be different between luminous and faint sources. E
p shows a positive correlation with the black hole mass. We discuss the implications of these results.
Évolutions et déterminants de la primo-nuptialité en République populaire de Chine : une perspective historique
Authors: Qinzi Xu Kim
Published: October 2019

Tout au long de l’histoire de la République populaire de Chine, l’âge au mariage n’a cessé d’augmenter sous l’effet des politiques étatiques et des évolutions socioéconomiques sans que le mariage ne perde de son attrait. Simultanément, le célibat définitif subi par certains groupes de population – dû à un déséquilibre du rapport des sexes sur le marché matrimonial et aux préférences de genre en termes de choix du conjoint – fait l’objet d’une inquiétude croissante. Cette étude utilise une analyse de survie de type cure afin de modéliser conjointement les déterminants de la probabilité et du calendrier du premier mariage. Nous évaluons les évolutions du mariage parmi plusieurs générations successives à l’aide de données provenant de multiples vagues de l’Enquête sociale générale sur la Chine. Les résultats suggèrent que, pour la plupart des cohortes d’hommes et de femmes, un faible niveau d’éducation correspond à des mariages précoces, mais avec de moindres chances de se marier tout au long de la vie. Pour les plus jeunes cohortes d’hommes, le fait de résider dans des provinces moins développées est associé à une entrée dans le mariage plus précoce, mais à une probabilité réduite de se marier. Parmi les plus jeunes cohortes de femmes, habiter une grande ville apparaît comme le principal facteur d’affaiblissement de l’intensité du mariage.
How Technologies Can Enhance Open Policy Making and Citizen-Responsive Urban Planning
Authors: De Filippi Francesca , Coscia Cristina , Guido Roberta
Published: October 2019

This paper explores an innovative approach to open policymaking and citizen-responsive urban planning. It reports on project MiraMap carried out by the Politecnico di Torino (the Polytechnic University of Turin). The project engages both citizens and the Public Administration in a reporting process concerning critical issues, as well as positive trends and resources within the Mirafiori Sud administrative area of Turin (Italy), through the use of a digital collaborative platform. The experiment was a real case study geared at evaluating the use of open source technologies to foster e-participation in urban planning. MiraMap has been set up with an eye to achieving integration within the current administrative management process and to involving new actors in the decision-making process through a “collective governance” approach. Therefore, this paper seeks to set up a methodological (and technological) framework, which is seen as crucial for addressing the complexity and dynamics of urban planning and programming, by integrating the perspectives of citizens through their actual engagement.
Depictions of Intimate Partner Violence
Authors: Thaller Jonel , Brown Megan Lindsay , Messing Jill Theresa
Published: October 2019

The music video for Eminem and Rihanna's hit single “Love the Way You Lie” (2010) reproduces commonly held myths about intimate partner violence (IPV), primarily that many women instigate their abuse or even enjoy it. Music video culture has been of concern to parents, researchers, and policymakers because youth are considered developmentally susceptible to gendered sexual scripts. However, some scholars suggest that audience members, rather than being passive consumers, are practical actors who filter information according to first- and secondhand experiences. This study examined how young adults' respond to the depiction of IPV in the music video for “Love the Way You Lie.” Findings indicated strong emotional response, a tendency to filter media through personal experiences, and a continuation of gendered blame. However, participants also demonstrated critical analysis. Thus, even when depictions are sensational or reinforce myth-based beliefs and gendered biases, young adults are capable of being critical consumers of popular culture.
Send Nudes?
Authors: Brenick Alaina , Flannery Kaitlin M. , Karr Emily , Carvalheiro Daniell
Published: October 2019

As texting continues to serve as an increasingly common method of communication among emerging adults, increases in rates of sexting, or sending sexually explicit messages, pictures, or videos, have also been observed. While consensual sexting can facilitate intimacy in relationships, when used as a tool to victimize others, it has been shown to yield a range of negative outcomes: from embarrassment to severe depression and suicide. This chapter aims to review the existing literature on emerging adults' engagement in and evaluations of sexting, while also considering the risks associated with sexting victimization. The role that individual characteristics, such as attachment style and rejection sensitivity as well as demographic characteristics such as gender, sexual orientation, and relationship status, play in the relation between experiences with and evaluations of using sexting as a tool for victimization will also be explored.
Tackling the Digital Divide
Authors: Liptrott Mark
Published: October 2019

A focus of daily life in the UK now revolves around the adoption of technology and the impact of Internet based technology raises issues of the digital divide, knowledge divide, social empowerment and socio economic effects. This paper focuses on the impact of the UK government's policy, ‘digital by default', on individuals with limited IT skills living in an area of deprivation. Following a review of prior research, the paper analyses data from semi structured interviews with progression support workers in their roles supporting individuals in their use of computers to find employment. Research results identify barriers inhibiting individuals from using IT and the discussion reflects whether the inclusion of concepts of Rogers' Diffusion of Innovations theory into the design of the ‘digital by default' policy has the potential to address the digital divide. The Conclusion draws on the research results to recommend a revised policy strategy.
Local Governments in Brazil
Authors: Maria de Souza Celina
Published: October 2019

Brazil is a federal country in which local governments have become the main providers of universal social services funded by the three tiers of government. The chapter presents the general characteristics of the country´s local governments and its position in the federal system, describes the distribution of revenue and governmental functions, shows the incremental increase in local resources and their earmarking for social policies, the complex system of funding and regulation created and discusses the role of local governments in the provision of universal social services. The argument put forward is that local governments have become the hub of the provision of universal social services while the federal government is in charge of policies targeting the poor. Local governments, however, are dependent on funding from other levels of government raising concerns about the sustainability of the provision and the expansion of universal social services as well as concern about improving their quality.
Accessibility to Higher Education in Nigeria
Authors: Odia James Osabuohien , Odia Agnes Anuoluwapo
Published: October 2019

Accessibility to university education represents a vital instrument for personal empowerment as well as the economic growth and technological advancement of a country. It is against the backdrop of the relevance and benefits of higher education that the quests for admission to Nigerian universities have assumed an alarming dimension due to the increasing annual applications to enroll for the entrance examinations conducted by the Joint Admission and Matriculation Boards and the subsequent screening by the respective universities. Unfortunately, most of the candidates are unable to gain admission to the university. The chapter considers some of the issues and challenges associated with low accessibility to university education for people seeking admission into Nigerian Universities and also suggest the ways to address the problems.
Manufacturing of Cycloid Tooth Profile for RV and Cyclo Drives by Threaded Wheel Hobbing and Grinding
Authors: Chang Ling Chiao , Tsai S.J. , Wei Jia Sheng , Chen Pin Ching
Published: October 2019

Cycloid planetary gear drives are widely used in power and precision motion transmission because of high gear-ratio and good shock absorbability. The aim of the paper is to propose a synthesis approach to generate necessary profiles for manufacturing with thread-wheel type tools based on a given cycloid tooth profile. Two different cases are illustrated in the paper to calculate these profiles, the profiles of thread wheel on normal or axial section, the equivalent rack profile, as well as the profile of dressing or grinding wheel for grinding or hobbing.
Influence of Tool Feed Conditions on Surface Integrity in Roller Burnishing with Rolling and Sliding Effects
Authors: Okada Masato , Shinke Makoto , Kitagawa Takuya , Inoue Tomoaki , Yasutani Satoshi , Miura Takuya , Otsu Masaaki
Published: October 2019

The influence of tool feed conditions on the burnished-surface integrity obtained by roller burnishing, which can generate the sliding effect, adding to the rolling effect at burnishing point, is addressed. A JIS SCM420 steel round bar was used as the workpiece. The surface integrity was improved by feeding the roller in the same direction with the sliding effect and by decreasing the tool feed rate. A better surface was achieved when the roller was fed in the opposite direction to the feed direction of the turning tool in a preceding process of the burnishing.
Study on High Quality Thermal Stress Cleavage of Thick Sapphire Wafer
Authors: Kawabe Tomoya , Furumoto Tatsuaki , Hashimoto Yohei , Koyano Tomohiro , Ochi Yuzo , Oguchi Kentaro , Chino Yuji , Hosokawa Akira
Published: October 2019

This study deals with high quality thermal stress cleavage of thick sapphire wafer with thickness of 5 mm. The influence of the distance from the edge to the initial crack, laser power, and plane orientation on the cleavage characteristics was experimentally investigated. The results indicate that the surface waviness Wa at the cleaved surface was influenced by the distance from the edge. A cleaved surface with good surface characteristics was obtained by cleaving with low laser power. The cleavage direction also affects the cleaved surface characteristics.
Effect of Face-Milling Process Parameters on Deformation of AISI304
Authors: Hagino Masahiro , Kouji Ikeuchi , Hiroshi Usuki , Inoue Takashi
Published: October 2019

In this study, machining was performed on stainless steel (AISI304) by face-milling. Design of experiment was implemented to develop the experimental layout. The aim of this work was to relate the response to the process parameters. An optimization routine was applied to determine the optimal conditions that would enhance the minimization of the deformation. As a result, mathematical models were developed to determine the relationship between the process parameters and the deformation after machining. The effects of process parameters on the deformation amount were defined.
Thermo-Mechanical Analysis of Laser Additive Manufacturing for Metals
Authors: Shih Hsuan Hao , Lin Chih Kuang
Published: October 2019

The aim of this study is to develop a finite element analysis technique to characterize the distributions of temperature and stress in the process of multilayer deposition of metallic powders by laser additive manufacturing (LAM). Simulation results indicate the residual normal stress in the laser moving direction is greater than that in other directions due to a larger temperature gradient, and it increases with number of deposited layers. Highly residual stresses are present in the LAM build and at the base nearby the interface between the build and base.
Effect of Amorphous Silicon Carbide Interlayer on Diamond-Like Carbon Film Structure and Film Hardness
Authors: Kimura Yutaroh , Zhu Xia , Toyota Hiromichi , Shiraishi Ryoya , Iwamoto Yukiharu , Nomura Shinfuku
Published: October 2019

This study was performed to improve the adhesiveness of a diamond-like carbon (DLC, a-C:H) layer film with an a-SiC interlayer. In previous studies, an a-SiC/DLC layer film was formed and changes in the DLC film structure and hardness caused by the thickness of the a-SiC layer were examined. After the a-SiC interlayer thickness increased and the G-peak position shifted to a lower frequency, the peak began shifting to higher frequencies. The G-peak position reached a minimum frequency at a film thickness of approximately 0.3 μm. In contrast, as the thickness of the a-SiC interlayer increased, the FWHM of the G-peak position increased almost monotonically and the number of sp3 bonds also increased. As the interlayer thickness increased, the hydrogen content in the DLC film increased, and then began decreasing, with the interlayer film thickness exhibiting a local maximum at approximately 0.3 μm. As for the DLC film hardness, a correlation between the hydrogen content and half width of the G-peak position was observed. When the hydrogen content was ≤40 at%, a positive correlation with the FWHM (G) was observed, and when the hydrogen content was 40 at% or above, a negative correlation with FWHM (G) was found. The adhesiveness of the DLC film and substrate was improved by forming an a-SiC thin film as an interlayer. The effects of the a-SiC thin film on DLC film quality were determined.