bluuebunny/crossref_metadata_2025 huggingface dataset:
Performance Optimization of Hybrid Satellite-Terrestrial Relay Network Based on CR-NOMA
Authors: Zhao Long , Liang Tao , An Kang
Published: September 2020

The non-orthogonal multiple access (NOMA) scheme realizes the transmission of multiple user signals at the same time and frequency resource block through power domain multiplexing, which improves the system transmission rate and user fairness. In this paper, we propose a joint relay-and-antenna selection scheme based on the cognitive radio scenario. This scheme can achieve the maximum communication rate of the secondary user when the primary user maintains the optimal outage performance. In the considered system both terrestrial relays and users are deployed with multi-antenna configurations and the terrestrial relays adopt the decode-and-forward (DF) strategy to achieve communication between satellites and users. Then, we derive the exact outage probability expression of each user in the system and the asymptotic probability expression under high signal-to-noise ratio (SNR). Numeric results demonstrate that increasing the number of relays and antennas on the terrestrial nodes can both improve system outage performance. Moreover, the number of relays imposes a more obvious effect on the achievable system performance.
Adaptive Compaction Construction Simulation Based on Bayesian Field Theory
Authors: Zhang Jun , Yu Jia , Guan Tao , Wang Jiajun , Tong Dawei , Wu Binping
Published: September 2020

The compaction construction process is a critical operation in civil engineering projects. By establishing a construction simulation model, the compaction duration can be predicted to assist construction management. Existing studies have achieved adaptive modelling of input parameters from a Bayesian inference perspective, but usually assume the model as parametric distribution. Few studies adopt the nonparametric distribution to achieve robust inference, but still need to manually set hyper-parameters. In addition, the condition of when the roller stops moving ignores the impact of randomness of roller movement. In this paper, a new adaptive compaction construction simulation method is presented. The Bayesian field theory is innovatively adopted for input parameter adaptive modelling. Next, whether rollers have offset enough distance is used to determine the moment of stopping. Simulation experiments of the compaction process of a high earth dam project are demonstrated. The results indicate that the Bayesian field theory performs well in terms of accuracy and efficiency. When the size of roller speed dataset is 787,490, the Bayesian field theory costs only 1.54 s. The mean absolute error of predicted compaction duration reduces significantly with improved judgment condition. The proposed method can contribute to project resource planning, particularly in a high-frequency construction monitoring environment.
Integrally Cooperative Spatio-Temporal Feature Representation of Motion Joints for Action Recognition
Authors: Chao Xin , Hou Zhenjie , Liang Jiuzhen , Yang Tianjin
Published: September 2020

In contemporary research on human action recognition, most methods separately consider the movement features of each joint. However, they ignore that human action is a result of integrally cooperative movement of each joint. Regarding the problem, this paper proposes an action feature representation, called Motion Collaborative Spatio-Temporal Vector (MCSTV) and Motion Spatio-Temporal Map (MSTM). MCSTV comprehensively considers the integral and cooperative between the motion joints. MCSTV weighted accumulates limbs’ motion vector to form a new vector to account for the movement features of human action. To describe the action more comprehensively and accurately, we extract key motion energy by key information extraction based on inter-frame energy fluctuation, project the energy to three orthogonal axes and stitch them in temporal series to construct the MSTM. To combine the advantages of MSTM and MCSTV, we propose Multi-Target Subspace Learning (MTSL). MTSL projects MSTM and MCSTV into a common subspace and makes them complement each other. The results on MSR-Action3D and UTD-MHAD show that our method has higher recognition accuracy than most existing human action recognition algorithms.
What Features and Functions Are Desired in Telemedical Services Targeted at Polish Older Adults Delivered by Wearable Medical Devices?—Pre-COVID-19 Flashback
Authors: Kańtoch Eliasz , Kańtoch Anna
Published: September 2020

The emerging wearable medical devices open up new opportunities for the provision of health services and promise to accelerate the development of novel telemedical services. The main objective of this study was to investigate the desirable features and applications of telemedical services for the Polish older adults delivered by wearable medical devices. The questionnaire study was conducted among 146 adult volunteers in two cohorts (C.1: <65 years vs. C.2: ≥65 years). The analysis was based on qualitative research and descriptive statistics. Comparisons were performed by Pearson’s chi-squared test. The questionnaire, which was divided into three parts (1-socio-demographic data, needs, and behaviors; 2-health status; 3-telemedicine service awareness and device concept study), consisted of 37 open, semi-open, or closed questions. Two cohorts were analyzed (C.1: n = 77; mean age = 32 vs. C.2: n = 69; mean age = 74). The performed survey showed that the majority of respondents were unaware of the telemedical services (56.8%). A total of 62.3% of C.1 and 34.8% of C.2 declared their understanding of telemedical services. The 10.3% of correct explanations regarding telemedical service were found among all study participants. The most desirable feature was the detection of life-threatening and health-threatening situations (65.2% vs. 66.2%). The findings suggest a lack of awareness of telemedical services and the opportunities offered by wearable telemedical devices.
Fusion of the SLAM with Wi-Fi-Based Positioning Methods for Mobile Robot-Based Learning Data Collection, Localization, and Tracking in Indoor Spaces
Authors: Lee Gunwoo , Moon Byeong-Cheol , Lee Sangjae , Han Dongsoo
Published: September 2020

The ability to estimate the current locations of mobile robots that move in a limited workspace and perform tasks is fundamental in robotic services. However, even if the robot is given a map of the workspace, it is not easy to quickly and accurately determine its own location by relying only on dead reckoning. In this paper, a new signal fluctuation matrix and a tracking algorithm that combines the extended Viterbi algorithm and odometer information are proposed to improve the accuracy of robot location tracking. In addition, to collect high-quality learning data, we introduce a fusion method called simultaneous localization and mapping and Wi-Fi fingerprinting techniques. The results of the experiments conducted in an office environment confirm that the proposed methods provide accurate and efficient tracking results. We hope that the proposed methods will also be applied to different fields, such as the Internet of Things, to support real-life activities.
Fabrication of Parylene-Coated Microneedle Array Electrode for Wearable ECG Device
Authors: Satti Afraiz Tariq , Park Jinsoo , Park Jangwoong , Kim Hansang , Cho Sungbo
Published: September 2020

Microneedle array electrodes (MNE) showed immense potential for the sensitive monitoring of the bioelectric signals by penetrating the stratum corneum with high electrical impedance. In this paper, we introduce a rigid parylene coated microneedle electrode array and portable electrocardiography (ECG) circuit for monitoring of ECG reducing the motion artifacts. The developed MNE showed stability and durability for dynamic and long-term ECG monitoring in comparison to the typical silver-silver chloride (Ag/AgCl) wet electrodes. The microneedles showed no mechanical failure under the compression force up-to 16 N, but successful penetration of skin tissue with a low insertion force of 5 N. The electrical characteristics of the fabricated MNE were characterized by impedance spectroscopy with equivalent circuit model. The designed wearable wireless ECG monitoring device with MNE proved feasibility of the ECG recording which reduces the noise of movement artifacts during dynamic behaviors.
Some of Problems of Direction Finding of Ground-Based Radars Using Monopulse Location System Installed on Unmanned Aerial Vehicle
Authors: Rutkowski Adam , Kawalec Adam
Published: September 2020

Locating active radars in real environmental conditions is a very important and complex task. The efficiency of the direction finding (DF) of ground-based radars and other microwave emitters using unmanned aerial vehicles (UAV) is dependent on the parameters of applied devices for angle location of microwave emitters, and on the construction and modes of operation of the observed transmitting antenna systems. An additional factor having the influence on DF of the radar, when are used systems installed on the UAV, is the rotation of the antenna of a radar. The accuracy of estimation of direction of any microwave transmitter is determined by the terrain properties that surround the transmitter and the objects reflecting microwave signals. The exemplary shapes of the radar antenna patterns and the associated relationships with the probability of remotely detecting the radar and determining its bearings are described. The simulated patterns of the signals received at an emitter-locating device mounted on a UAV and the expected results of a monopulse DF based on these signals are presented. The novelty of this work is the analysis of the DF efficiency of radars in conditions where intense multi-path phenomena appear, and for various amplitudes and phases of the direct signal and multi-path signals that reach the UAV when assuming that so-called simple signals and linear frequency modulation (LFM) signals are transmitted by the radar. The primary focus is on multi-path phenomenon, which can make it difficult, but not entirely impossible, to detect activity and location of radar with a low-flying small UAV and using only monopulse techniques, that is, when only a single pulse emitted by a radar must be sufficient to DF of this radar. Direction of arrival (DOA) algorithms of signals in dense signal environment were not presented in the work, but relevant suggestions were made for the design of such algorithms.
Large-Area Thermal Distribution Sensor Based on Multilayer Graphene Ink
Authors: Koskinen Tomi , Juntunen Taneli , Tittonen Ilkka
Published: September 2020

Emergent applications in wearable electronics require inexpensive sensors suited to scalable manufacturing. This work demonstrates a large-area thermal sensor based on distributed thermocouple architecture and ink-based multilayer graphene film. The proposed device combines the exceptional mechanical properties of multilayer graphene nanocomposite with the reliability and passive sensing performance enabled by thermoelectrics. The Seebeck coefficient of the spray-deposited films revealed an inverse thickness dependence with the largest value of 44.7 μV K−1 at 78 nm, which makes thinner films preferable for sensor applications. Device performance was demonstrated by touch sensing and thermal distribution mapping-based shape detection. Sensor output voltage in the latter application was on the order of 300 μV with a signal-to-noise ratio (SNR) of 35, thus enabling accurate detection of objects of different shapes and sizes. The results imply that films based on multilayer graphene ink are highly suitable to thermoelectric sensing applications, while the ink phase enables facile integration into existing fabrication processes.
Building a Thriving Organization: The Antecedents of Job Engagement and Their Impact on Voice Behavior
Authors: Kim Jinhee , Lee Soojin , Byun Gukdo
Published: September 2020

For an organization to become sustainable, it is essential to keep employees engaged in their jobs with enthusiasm. Thus, this study presents and tests an integrative model of job engagement. Based on Kahn’s model, we adopted person–job fit (P–J fit), psychological contract fulfillment, and self-efficacy as the antecedents of job engagement, verified how these antecedents affect job engagement, and examined how they influence voice behavior. Data were collected from 189 subordinate–supervisor dyads from public corporations and private enterprises in South Korea. The results of the analysis suggested that all antecedents have positive relationships with job engagement. We also found that job engagement is positively related to employees’ voice behavior, and fully mediates the relationships between the antecedents and voice behavior. Moreover, our findings suggested that perceived coworker support moderates the relationship between job engagement and voice behavior.
Exact Solution for Relativistic Trajectories Using Modal Transseries
Authors: Acedo Luis , Arenas Abraham J. , De La Espriella Nicolas
Published: September 2020

In this article, we design a novel method for finding the exact solution of the geodesic equation in Schwarzschild spacetime, which represents the trajectories of the particles. This is a fundamental problem in astrophysics and astrodynamics if we want to incorporate relativistic effects in high precision calculations. Here, we show that exact analytical expressions can be given, in terms of modal transseries for the spiral orbits as they approach the limit cycles given by the two circular orbits that appear for each angular momentum value. The solution is expressed in terms of transseries generated by transmonomials of the form e−nθ, n=1, 2, …, where θ is the angle measured in the orbital plane. Examples are presented that verify the effect of the solutions.
A Photo Stability Indicating HPLC technique for Validation of Netupitant and Palonosetron in Bulk and Formulations
Authors: Salomi Patta , Sireesha Bathala , Sultana Afreen , Reddy Ravindra
Published: September 2020

Analytical chemistry is the science that seeks ever improved means of measuring the chemical composition of natural and artificial materials.Netupitant Delayed emesis has been largely associated with the activation of tachykinin family neurokinin 1 receptors. Palonosetron is a selective serotonin 5-HT3 receptor antagonist. The antiemetic activity of the drug is brought about through the inhibition of 5-HT3 receptors present both centrally  and peripherally in turn inhibits the visceral afferent stimulation of the vomiting center.The mobile phase used was orthophosphoric and acetate 70% buffer pH 3 and 30% methanol.The assay of Netupitant and Palanosetron was performed with tablets and the % assay was found to be 100.08 and 100.04, The linearity was found to be linear with a correlation coefficient of 0.999, the precision 0.8 and 0.3 for Netupitant and Palanosetron which shows that the method is precise.The validation of developed method shows that the accuracy is well within the limit, which shows that the method is capable of showing good accuracy and reproducibility. The LOD and LOQ for Netupitant were found to be 3.02 and 9.98 and LOD and LOQ for Palanosetron was found to be 3.00 and 10.00. Thus, it shows that the method is stability indicating, sensitive, accurate, robust and precise. Hence, the developed HPLC method can be successfully applied to the pharmaceutical dosage form and can be used for routine analysis.
Development and characterization of miconazole nitrate transfersomal gel
Authors: Shaik Sajid Ali  , Madhu Gudipati  , Ramarao Nadendla
Published: September 2020

Miconazole nitrate (MIC) is an antifungal drug used for the treatment of superficial fungal infections. However, it has low skin permeability. Hence, the basic idea behind the development of such a system, transfersomes is to maintain a sustain release of drug from the dosage form and for target delivery. Miconazole nitrate was formulated as transfersomes, half-life can be increased and the desired effect can be obtained. MIC transfersomes were prepared using a thin lipid film hydration technique. The prepared transfersomes were evaluated with respect to entrapment efficiency (EE%), particle size, and quantity of in vitro drug released to obtain an optimized formulation. The optimized formulation of MIC transfersomes was incorporated into a Carbapol 934 gel base which was for drug content, pH, spreadability, viscosity, in vitro permeation, and in vitro activity. The prepared MIC transfersomes had a high EE% ranging from 65.45% to 80.11%, with small particle sizes ranging from 368 nm to 931 nm. The in vitro release study suggested that there was an inverse relationship between EE% and in vitro release. In 24 hrs the drug release was observed ranging from 79.08% to 88.72%. The kinetic analysis of all release profiles was found to follow Higuchi’s diffusion model. All independent variables had a significant effect on the dependent variables (p-values < 0.05). Therefore, Miconazole nitrate in the form of transfersomes has the ability to penetrate the skin, overcoming the stratum corneum barrier. When the data subjected to zero order and first order kinetics model, a linear relationship was observed with high R2 values for zero order model as compared to first order model and suggested that the formulations followed zero order sustained release.
Utilization of Lipids, Polymers by Modern Techniques for Innovative Pharmaceutical Formulations and Medical Devices
Authors: M. Hima Bindu  , Buduru Gowthami
Published: September 2020

With advancing science and technology, new futuristic technologies have been upcoming that are having a greater impact on the pharmaceutical and biomedical fields. Many lipids and polymer of natural and synthetic origin have spread horizons enabling to reach in fabricating delivery systems for unmet medical needs. In this modern biomedicine era, we must outline and scrutiny the roles of these biomaterials and the modern technologies that are shaping up the advancing medicines. The real challenges in modulating, fine-tuning the biomaterials for their bioactive properties are vital for assessing the in-vivo performance of the developed systems. Therefore, the present review discusses the detailed analysis of the current research reported in the technologies of utilizing the lipids, polymers, and their role in delivering the drugs, genes, and designing advanced implantable medical devices. The scrutiny also focuses on key optimization tools, analytical methods, formulation, and biomedical techniques helpful in developing the solutions that can be administered different routes in different therapeutic indications.
Management of Hemodialysis Patients with Suspected or Confirmed COVID-19 Infection: Perspective from the Spanish Nephrology
Authors: Sánchez-Alvarez Emilio , Macía Manuel , de Sequera Ortiz Patricia
Published: September 2020

Background

The recent SARS-CoV-2 coronavirus pandemic has signified a significant effect on the health of the population worldwide. Patients on chronic RRT have been affected by the virus, and they are at higher risk due to the frequent comorbid conditions. Here, we show the results of the COVID-19 Registry of the Spanish Society of Nephrology during the first 6 weeks of the outbreak.

Methods

This study is an analysis of the data recorded on a registry of patients with ESKD on RRT who tested positive for COVID-19. The aim was to evaluate clinical conditions, therapeutic management, and consequences, including outcome. The registry began on March 18th, 2020. It includes epidemiologic data, cause of CKD, signs and symptoms of the infection, treatments, and outcomes. Patients were diagnosed with SARS-CoV-2 infection on the basis of the results of PCR of the virus obtained from nasopharyngeal/oropharyngeal swabs. The tests were performed on symptomatic patients and on those who mentioned contact with infected patients.

Results

As of May 2, the registry included data on 1397 patients (in-center hemodialysis [IC-HD], 63%; kidney transplant [Tx], 34%; peritoneal dialysis [PD], 3%; and home hemodialysis, 0.3%). The mean age was 67±15 years, and two-thirds were men. Dialysis vintage was 46±41 months, and the time after transplantation was 59±54 months. Eighty-five percent of the patients required hospital admission, and 8% had to be transferred to intensive care units. Overall mortality was 25% (IC-HD, 27%; Tx, 23%; and PD, 15%), and significant proportions of deceased patients have advanced age, are on IC-HD, and presented pneumonia. Age and pneumonia were independently associated with the risk of death.

Conclusions

SARS-CoV-2 infection affected a significant number of Spanish patients on RRT, mainly those on IC-HD. Hospitalization rates and mortality were high. The factors more closely related to mortality were age and pneumonia.
Exploring Effective Factors in the Demographic and Motivation Issues of the Banking Sector of Bangladesh
Authors: Rahman Mohammad Azizur
Published: September 2020

The paper attempted to explore the most effective factors of demographic outlined affecting employees’ motivation. With a view to empirical analysis data were collected from 400 bank employees. In the demographic issues gender, age, experience, pay, type and name of the bank, present and prior designations etc. were considered. For inferential statistics there were five regression models with ANOVA and coefficients models developed in the study. The dependent variables were namely work experience, present basic and gross salary, and initial basic and gross salary and 94%, 77%, 68%, 48% and 35% respectively explained by other independent predictors. The study found that work experience was strongly affected by age. On the other hand, present pay (basic and gross) was highly subjective by present designation and initial basic and gross salaries were prejudiced by initial or first joining designation of the employees. The study was also observed on findings that age, present and first joining designations modify employees’ motivation in the banking sector of Bangladesh (showed in Table 18).
PENGARUH PEMBERIAN PUTIH TELUR TERHADAP KADAR KOLESTEROL TOTAL PASIEN TB PARU
Authors: Arza Putri Aulia , Ilham Dezi , Hermaiyan Lelen
Published: September 2020

Latar Belakang: TBC masih menjadi masalah kesehatan utama di Asia Tenggara dan menyebabkan morbiditas dan mortalitas.Tujuan: Tujuan dari penelitian ini adalah untuk menilai efektivitas pemberian putih telur dan madu terhadap kadar kolesterol total pasien TBMetode: Penelitian ini merupakan randomized controlled trial menggunakan metode quasi experimental dengan desain penelitian control group pre-test post-test. Dilakukan di Rumah Sakit M. Zein Pesisir Selatan pada tahun 2018. Teknik pengambilan sampel menggunakan purposive sampling dan 32 pasien dialokasikan untuk intervensi (n = 16) dan kelompok kontrol (n = 16). Kedua kelompok menerima diet protein tinggi energi tinggi, kelompok intervensi menerima ekstra putih telur dan madu selama 7 hari. Data dianalisis menggunakan paired sample t test untuk menganalisis perbedaan sebelum-sesudah dalam total Kolesterol). Tes Wilcoxon Sign Rank digunakan untuk menilai perbedaan dalam dua kelompok.Hasil: Berdasarkan hasil penelitian pada kelompok perlakuan, ditemukan bahwa ada efek pemberian tambahan putih telur dan madu pada kadar kolesterol total pada pasien TB paru. Sedangkan pada kelompok kontrol tidak ada efek memberikan tambahan putih telur dan madu pada kadar kolesterol total pada pasien TB paru.Kesimpulan: Ekstra putih telur dan madu secara efektif dapat menurunkan kadar kolesterol total pasien TB Background: Tuberculosis remains a major health problem in South-East Asia and causes of morbidity and mortality.Objective: The purpose of this research was to assess the effectivity of egg white extra with honey intake on Total cholesterol levelsMethods: A single blind randomized controlled trial was conducted at DR. M. Zein hospital in 2018. Sampling technic used purposive sampling and 32 patients were allocated to intervention (n = 16) and control (n = 16) groups. Both groups received high energy high protein diet, the intervention group received an oral egg white extract with honey for 7 days. Data were analyzed using paired sample t test to analyze before-after differences in total Cholesterol). Wilcoxon Sign Rank test was used to assess the differences in two groups.Results: Based on the results of research in the treatment group, it was found that there was an effect of giving extra egg white and honey to the levels of total cholesterol in pulmonary TB patients. Whereas in the control group there was no effect of giving extra egg whites and honey on the levels of total cholesterol in pulmonary TB patientsConclusion: Extra egg whites and honey effectively could decrease total cholesterol TB Patients
Application Possibilities of Decentralization and Blockchain Technology Using Computer Vision and Artificial Intelligence in Defense Management, Military and Police Organizations
Authors: Huszár Viktor
Published: September 2020

Military science has faced new challenges at the end of the 20th century with the emergence of the Internet. Challenges and threats to traditional security got a new interpretation with a new concept of cybersecurity, which led to an organic transformation of military engineering and IT. As the Internet has fundamentally changed the way the world works, new technologies have emerged on the network that can revolutionize the multitude of industries. Such innovation is Distributed Ledger Technology (DLT) and Blockchain Technology supplemented with Artificial Intelligence and machine vision. The potential uses of the block chain represent a multitude of military technical scientific challenges. The technology makes it possible to co-operate freely with cryptographic procedures on distributed networks without state control, but it can also serve military and defense management purposes.
The River Nile Conflict in the Aspects of Critical Infrastructure Protection
Authors: Treszkai Ákos
Published: September 2020

The aim of this paper is to present the River Nile conflict from the aspects of critical infrastructure protection. It is often stated that the next world war will be fought over water, and there are few regions as tense as the Nile Valley. Egypt and Ethiopia have a severe disagreement, Sudan is in the middle of it, and a big geopolitical shift is being played along the world’s longest river. The Grand Renaissance Dam has been un-der construction on the Blue Nile River in Ethiopia. This dam will be the greatest hydro-electric power plant in Africa. This critical infrastructure has both political and military importance.
Robotic Arm Assisted Laser Surgery with LiFi Based Patient Monitoring System
Authors:   Department of Biomedical Engineering, AVIT, Chennai, India., Sandhiya* R. , Arulvallal Santhoshini ,   Department of Biomedical Engineering, AVIT, Chennai, India., B Lakshmi Shree. ,   Department of Biomedical Engineering, AVIT, Chennai, India.
Published: September 2020

With the advances in electronics and control software, robotic arms are now capable of quick and accurate movement under a wide range of conditions. Robotic surgery has become the most important field of general surgery. This rapid progress is quantitative and qualitative .The common procedures performed in Robotic Field and the future advancements are being discussed in this paper. Along with the existing system of Robotic surgery the advanced instruments and the future possibilities are being discussed. This project will help to solve the existing problems in robotic surgery even in other additional fields. Now a days the limitations of WiFi has reduced the usage in medical field especially. Therefore a LiFi based system will enable to overcome the limitations of Wi-Fi. A continuous monitoring of the vital parameters of the body like temperature, pulse rate and glucose level is also required. Regular interval of time measuring the intensive parameter of the patient’s health with a low cost micro controller and intelligent LiFi based advanced patient monitoring system is developed and if any abnormal condition occurs, it directly sends a message to the doctor’s base station machine via Li-If that particular word no’s particular parameter is out of the range. Doctor can do the fast assessment of the patient’s health without wasting the time with the help of an alert message.
Image Description using Encoder and Decoder LSTM Methods: Some Issues
Authors:   Department of Computer Science & Engineering, Nitte Meenakshi Institute of Technology, Bangalore, Karnataka, India., Mrs Nirmala*  , Joshi Dr,Gopalkrishna ,   Dean Director, Centre for Engineering Education Research B. V. Bhoomaraddi College of Engg. & Technology, Hubli, Karnataka, India., Hiremath Dr P S ,   Professor, Department of Computer Science, BVB College of Engineering & Technology, Hubli Karnataka, India.
Published: September 2020

Description of images has an important role in image mining. The description of images provides an insight into the location, its surroundings and other information related to it. Different procedures of describing the images exist in literature. However, a well trained description of images is still a tedious task to achieve. Several researchers have come up with solutions to this problem using various techniques. Herein, the concept of LSTM is used in generating a trained description of images. The said process is achieved through encoders and decoders. Encoders use techniques of maxpooling and convolution, while the decoders use the concept of recurrent neural networks. The combined architecture of encoders and decoders result in trained classifiers, which enable reliable description of images. The working has been implemented by considering a sample image. It has been found that slight variations with regard to accuracy, naturalness, missing concepts, deficiency of sufficient semantics and incomplete description of image still exist. Hence, it can be inferred that, with reasonable amount of enhancement in the technique and using the techniques of natural language processing, more accuracy in image descriptions could be achieved.
Automatic Non-Contact Fever Detector to Prevent COVID-19 Spread in Public Places
Authors:   Ward Melville High School, 380 Old Town Rd, Setauket, NY 11733, USA., Tian* Katherine
Published: September 2020

The COVID-19 virus has spread around the world and over 22 million people were diagnosed with the virus. Fevers are one of the top three symptoms of coronavirus, the others being coughs and shortness of breath. A critical component to prevent the spread of COVID-19 is to quickly detect fevers in public places, including hospitals, doctor offices, elder care centers, schools, gyms, movie theaters, restaurants, etc. Today, thermometers can be used in these places, but they require manual operation by dedicated health workers. To make temperature measurement an automatic process, an automatic non-contact fever detector is developed. The fever detector consists of several components: a clinically tested and precisely calibrated thermometer to guarantee accuracy and reliability, a motion sensor to detect the readiness of temperature taking, a relay-based trigger circuit to replace the manual trigger of the thermometer, and a DC-to-DC regulator to replace batteries in the thermometer. LCD signals and the buzz signal from the thermometer, are used to determine the measurement results. Lighting and sound signals are used as indication of normal temperature or fever. All the functions of the detector are controlled by a microcontroller. The detector has been thoroughly tested for continuous operation. Once widely used, the detector will help to detect fevers in public places and prevent the spread of the COVID-19 virus. .
Conceptual Design of a Roller Obstacle Deflector
Authors:   Post graduate student at Department of mechanical engineering, Methodist College of Engineering and Technology, Hyderabad, India., Raj* Tharun , Prasad M. ,   Assistant Professor, Department of mechanical engineering, Methodist College of engineering and technology, Hyderabad, India.
Published: September 2020

An Obstacle Deflector is a device mounted in front of the trains to sweep away the obstacle off the track or absorb impact energy to prevent derailment. On considering the same concept which sweeps the obstacle, I have designed a device that sweeps away living obstacles (animals, Humans) from the tracks with life expectancy. Many animals are killed over the tracks in regular train accidents. Based on this issue, here my project discusses with the conceptual design of a roller obstacles deflector that absorbs the impact energy on collision and sideways the obstacle using roller based polyethylene rollers applied in front of the train. The cushioning effect designed for the device helps to reduce the impact force when Train hits the living obstacles (Human, cow and elephant) at speed of 30km/hr. or 8111 mm/s., With a load of 50 Tonne. As per study, human pain can be measured in Del (Dolorimeter) which explains that the maximum limit of pain average human being can withstand is 45 Del. But, breaking of a bone is almost equals to 57 Del. Some studies say Del is equal to 1403.508 N forces. By this data and using the reaction forces resulted at the time of clash in Ansys software simulation, we can state the amt. of pain (in terms of DEL) to some living organisms and can conclude the functionality of the device to save the life. This design works for the limited animal category based upon size and weight of the animal. This design works under the limited speed and with limited load to safeguard the animals and humans on the track. This design does not impact on the existing safety conditions of the railways as it’s absorb the impact up to limited extend. The modeling is done using CATIA. The explicit dynamics of impact is done with ANSYS
Ci può essere qualcosa di inarrivabile
Authors: D'Achille Paolo
Published: September 2020

Ci sono alcuni che ritengono che l’aggettivo inarrivabile sia scorretto, sia perché il suffisso -bile si lega a verbi transitivi, sia perché manca la forma positiva arrivabile, e ritengono che al suo posto andrebbe usato irraggiungibile.
Morphophysiological Changes in the Liver of Wistar Rats Exposed to Acute and Chronic Concentrations of Vitellaria paradoxa
Authors: Folarin Racheal O. , Omirinde Jamiu O. , Azeez Idris A. , Plang Naanman J.
Published: September 2020

Background: Vitellaria paradoxa is a tropical plant with diverse folkloric health benefits that could be optimised in health product development. This study was therefore designed to investigate morphophysiological changes in the liver of rats exposed to acute and chronic concentrations of Vitellaria paradoxa
Methods: A total of seventy-four (74) animals (Wistar rats and mice) were randomly assigned into two main groups based on toxicity plan; acute group consist of 9 sub-groups [0 (control), 10, 20, 40, 80,160, 320, 640 and 1280 mg/kg; n=6] while the chronic group consists of 4 sub-groups [0 (control), 32, 64 and 128 mg/kg; n=20] were orally exposed to Vitellaria paradoxa. The 96 hour LC50 value of Vitellaria paradoxa was calculated as 640mg/kg body
Results: The acute concentrations of Vitellaria paradoxa induced dose-dependent severity in clinical signs such as: twitching, increase rate of respiration, sedation, abdominal muscle contractions and increased motor activity. The chronic concentrated grades of Vitellaria paradoxa more particularly the higher doses (64 and 128mg/kg) elicited significantly increased serum liver enzymes (ALT, ALP and AST) values compared to the control. Similarly, several hepatic histoarchitectural lesions such as: mild to severe, central venous and sinusoidal congestion, hepatic degeneration, and necrosis with loss of cord arrangement were strikingly visible at the higher doses. There was no significant difference in the haematological parameters across the different concentrations
Conclusion: This study has shown that Vitellaria paradoxa seems to be unsafe following a prolonged administration. Therefore, caution should be taken in its both short and long term usage
A Survey of the Impact Lockdown Due to COVID-19 Pandemic on the Volume of Patients Accessing Breast Cancer Care in Nigeria
Authors: Agodirin Olayide S. , Rahman Ganiyu A. , Olatoke Samuel A. , Aremu Isiaka , Shittu Asimiyu A. , Akande Halimat J.
Published: September 2020

Background: The coronavirus disease 2019 (COVID-19) pandemic has disrupted cancer care, among others and increased the suffering of breast cancer (BC) patient owing to the imposed lockdown. This is study investigated the impact of COVID-19 lockdown on the volume of BC patients accessing care in a poor resource setting .
Methods: We surveyed general surgery units (GSU) in North central and Southwestern Nigeria during the first lockdown in April/May 2020. Using an electronically mailed questionnaire, we requested data on patients accessing clinics, chemotherapy and definitive surgery before and during lockdown. The data were analyzed and presented in descriptive statistics using SPSS v 20 and Microsoft Excel software.
Results: Among the 22 GSUs, only 5(23%) prepared for maintaining oncology or breast cancer services during the lockdown. Compared to the volume before the lockdown, 15(60%) GSUs received <30% of the usual volume of new cases, 16 (73%) received <30% of the usual of patients chemotherapy patients and no patient accessed definitive surgery in 15 (68%) GSUs.
Conclusion: There was a marked reduction in the volume of BC patients accessing outpatient clinics, chemotherapy facilities, and definitive surgery during the COVID-19 lockdown
Norovirus Infection among Children Under 5 Years of Age In Niger-Delta Zone, Nigeria
Authors: Osazuwa Oghomwen F. , Okojie Rachel , Akinbo Frederick O.
Published: September 2020

Background: Norovirus is now recognized as a major cause of gastroenteritis among children worldwide. This study aimed to determine the prevalence of Norovirus infection among children that are less than five years of age in Niger-Delta zone, Nigeria.
Methods: A total of 263 subjects consisted of 163 children with diarrhea attending Paediat-ric clinics at the Central Hospital, Warri and Federal Medical Center, Yenagoa as well as 100 aged- and sex-matched healthy individuals that served as controls were recruited for this study. Demographic information was obtained through the aid of a well-structured questionnaires. Norovirus was detected by using a rapid lateral flow immunochromatographic assay kit (Biopanda reagents, Belfast, United Kingdom).
Results: The overall prevalence of Norovirus infection was 15.3%. The prevalence of Norovirus infection was significantly higher in Delta State than in Bayelsa State (22.9 % vs. 6.7%; OR= 3.6615; 95% CI = 1.378, 9.725; P=0.0092). Children that are less than 5 years of age attending day care centers are greatly affected by Norovirus infection (P=0.0044). Also, poor hand hygiene practice was also a significant risk factor for Norovirus infection among study subjects (P=0.0036). Furthermore, secretors were found to have a 1 to 334 fold increased risk of acquiring Norovirus infection in Delta State than in Bayelsa State (OR=19.28, 95% C.I, 1.1102, 334.68, P=0.0422).
Conclusion: The need for routine screening for Norovirus infection among children with diarrhea is advocated. Data from this study as well suggests that genetic and environmental factors play a role in Norovirus infection.
Sub-active Toxicity Effects of Iron Oxide Nanoparticles on Selected Organs in Male Mice
Authors: Ajadi Mary B. , Ayelagbe Olubunmi G. , Akinloye Oluyemi
Published: September 2020

Background: Decreased particle size and increased surface area to volume ratio are beneficial properties of nanoparticles. However, there are contrasting reports on their potential organotoxic effects. The dose de-pendent toxicity effects of iron III oxide nanoparticles (Fe2O3NPs) on the biochemical indices and histology of select-ed organs of adult male mice were investigated.
Methods: Fifty six male mice weighing between 25-32g were randomly assigned into 4 groups (n=14), the control/group 1 was given the vehicle/distilled water, while animals in groups (2-4) received 5 mg/kg, 25 mg/kg and 50mg/kg body weights of Fe2O3NPs (INP) respectively by intraperitoneal route of administration for 14 days after which blood samples were drawn for biochemical analysis. Histopathology studies on the effect of graded doses of INP on the architecture of the liver, kidney and testes of mice were carried out.
Results: There were significant increases in plasma sodium, creatinine, urea, chloride, albumin, alanine and aspartate aminotransferases (ALT and AST) in the experimental animals after the 7th and 14th days of ad-ministration of graded doses of INP compared with the control group(p<0.05). These changes were dose-dependent. Photomicrographs showed morphological alterations including kupffer cells hyperplasia, hepatocyte necrosis, interstitial nephritis and eosinophilia of the renal tubular cells but only mild reduction in spermatid formation in testes at 25 and 50mg/kg dosage respectively.
Conclusion: The Administration of INP brought about dose-dependent alterations in plasma markers of renal functions as well as hepatic enzymes activity. Deleterious morphological changes in architecture of the liver and kidney as well as mild changes in testes of mice were associated with INP administration
Single Board Computers (SBC): The Future of Next Generation Pedagogies in Pakistan
Authors: Imran Hamza Ali
Published: September 2020

ARM processors have taken over the mobile
industry from a long time now. Future of data centers and the
IT industry is estimated to make use of ARM Processors.
Projects like Openstack on ARM are enabling use of ARM in
data centers . Single board computers (SBCs) based on ARM
processors have become the norm these days. Reason for their
popularity lies in their cost effective and power efficient nature.
There are hundreds of them available in the market having
different sizes, compute power and prices. The reason for their
popularity is largely due to the rise of new technology called
IoT (Internet of Things) but there is another perspective where
they can become handy. Low Price and Power Usage of single
board computers makes them top candidate to be used for
teaching many courses with hands-on experience in developing
countries like Pakistan. Many boards support full Linux
distributions and can be used as general-purpose computers
while many of them are open hardware based. In this paper, we
have reviewed the famous options available and tried to figure
out which of them are better for teaching what kind of courses
Oraciones evaluativas y los compromisos de la aserción
Authors: Díaz Legaspe Justina
Published: September 2020

Las oraciones con predicados evaluativos son sensibles a la valoración realizada según un parámetro evaluativo contextual. Dos teorías han proporcionado explicaciones para este tipo de sensibilidad: el contextualismo (indexicalista y no indexicalista) y el relativismo de apreciación. En este trabajo presentaré una tercera opción que logra lo mismo que estas de una manera más sencilla. La teoría se centrará en dos pilares: una reconsideración del contenido expresado por las oraciones con predicados de gusto que parte de la articulación del parámetro evaluativo como una función diádica, y los compromisos (prácticos y lingüísticos) que la aserción de este tipo de oraciones impone sobre los hablantes y sobre el auditorio. Con ambas herramientas se logrará una teoría que podrá dar cuenta de acuerdos, desacuerdos y usos ecóicos de las oraciones evaluativas sin apelar a contextos de apreciación suplementarios a la teoría semántica estándar o a presupuestos de comunidad de los parámetros evaluativos.
Desenvolvimento biomecânico e avaliação de uma nova estrutura para reabilitação all-on-four.
Authors: Araujo SILVA Vanessa , De Andrade FONSECA Allyson Henrique , Ribas FONSECA Dimitri , Isaías SERAIDARIAN Paulo
Published: September 2020

Introdução: Para a reabilitação completa de mandíbulas totalmente edêntulas, a opção de carga imediata determina o uso de próteses provisórias que imobilizam os implantes instalados. Embora as próteses provisórias com reforço proporcionem reabilitações com benefícios biomecânicos, a não adoção desta recomendação coexiste em diferentes estudos sobre restaurações imediatas.

Objetivo: Este estudo avalia um tipo de prótese para restaurar mandíbulas pelo conceito all-on-four.

Material e método: O comportamento mecânico das próteses com a estrutura modificada foi avaliado in vitro , sob um ensaio de flexão mecânica unilateral em cantilever. Dois grupos representativos foram incluídos no conceito all-on-four, com um grupo teste G1 (n = 10) contendo estruturas modificadas e um grupo controle G2 (n = 10) que incluiu próteses acrílicas completas. As amostras foram submetidas à termociclagem com 500 ciclos (5 ° ± 2 ° C por 30 se 55 ° ± 2 ° por 30 s) e ao ensaio de flexão mecânica no cantilever.

Resultado: O teste de Mann-Whitney revelou diferença significativa entre G1 e G2 (p <0,001). Na avaliação descritiva, o G1 apresentou média de 830,50 N até a fratura inicial da resina, enquanto o grupo controle apresentou média de 403,58N. A resistência máxima até a fratura completa foi registrada no G1, com média de 903,03N, enquanto no G2, foi registrada uma média de 435,20N. O componente linear vertical da flexão foi de 0,68 mm e 0,39 mm até a fratura inicial da barra, respectivamente para G1 e G2.

Conclusão: A estrutura modificada para o protocolo all-on-four determinou melhor desempenho mecânico quando comparado ao mesmo modelo de prótese acrílica completa.
Técnica de distração audiovisual para controlar a ansiedade em crianças no tratamento odontológico.
Authors: Clara Rodrigues Maria Antonia , Mendes Rocha Carlos Nelson
Published: September 2020

Objetivo: O objetivo do estudo é avaliar a ansiedade da criança antes e após o tratamento por meio da técnica de distração visual auditiva em crianças.

Metodologia: É um estudo quantitativo, descritivo e transversal. O estudo foi realizado entre 2016 e 2017 em duas clínicas de estomatologia pediátrica. A ansiedade foi avaliada antes e após o tratamento pela técnica audiovisual.

Resultados: Verifica-se que a ansiedade leve aumenta após o tratamento de 18% para 47%. A ansiedade moderada a severa diminui de 16% para 3%, observa-se que nenhuma criança após o tratamento apresenta ansiedade severa. Esses resultados são estatisticamente significativos.

Conclusões: Em conclusão, a técnica de distração auditiva visual pode ser um método eficaz para reduzir os níveis de ansiedade em pacientes pediátricos durante o tratamento odontológico invasivo.