bluuebunny/crossref_metadata_2025 huggingface dataset:
The Influence of Casein Coatings on the Corrosion Behavior of Mg-Based Alloys
Authors: Kania Aneta , Cesarz-Andraczke Katarzyna , Brytan Zbigniew , Reimann Łukasz , Smolarczyk Paulina
Published: February 2022

This article discusses the influence of conversion casein coatings with a thickness of about 20 µm on the structure and the corrosion behavior of two magnesium alloys: MgCa2Zn1 and MgCa2Zn1Gd3. Casein is a protein that, along with whey protein, is a part of milk. Casein coatings are appropriate for bone growth because they contain high amounts of calcium and phosphorus. In this work, casein coatings and casein-free coatings were applied on Mg-based alloys using the conversion process. The structure and topography observations were presented. The corrosion behavior was determined by electrochemical and immersion tests, and electrochemical impedance spectroscopy (EIS) in chloride-rich Ringer solution. The obtained results show that conversion casein coatings effectively protect Mg-based alloys against corrosion. This was confirmed by higher corrosion potentials (Ecorr), polarization resistances (Rp) derived from Tafel’s and EIS analysis, as well as low hydrogen release. The volume of hydrogen released after 216 h of immersion for casein coatings applied to MgCa2Zn1 and MgCa2Zn1Gd3 alloys was 19.25 and 12.42 mL/cm2, respectively. The improvement in corrosion resistance of casein coatings was more significant for Mg alloy dopped with gadolinium. The lower corrosion rate of casein conversion coatings is explained by the synergistic effect of the addition of Gd in the Mg-based alloy and the formation of dense, tight conversion casein coatings on the surface of this alloy.
Influence of Preheating Temperature on Structural and Mechanical Properties of a Laser-Welded MMC Cobalt Based Coating Reinforced by TiC and PCD Particles
Authors: Czupryński Artur , Pawlyta Mirosława
Published: February 2022

This article presents research on the structural and mechanical properties of an innovative metal matrix composite (MMC) coating designed for use in conditions of intense metal-mineral abrasive wear. The layer, which is intended to protect the working surface of drilling tools used in the oil and natural gas extraction sector, was padded using the multi-run technique on a sheet made of AISI 4715 low-alloy structural steel by Laser Direct Metal Deposition (LDMD) using a high-power fiber laser (FL). An innovative cobalt alloy matrix powder with a ceramic reinforcement of crushed titanium carbide (TiC) and tungsten-coated synthetic polycrystalline diamond (PCD) was used as the surfacing material. The influence of the preheating temperature of the base material on the susceptibility to cracking and abrasive wear of the composite coating was assessed. The structural properties of the coating were characterized by using methods such as optical microscopy, scanning electron microscopy (SEM), energy dispersion spectroscopy (EDS), transmission electron microscopy (TEM) and X-ray diffraction analysis (XRD). The mechanical properties of the hardfaced coating were assessed on the basis of the results of a metal-mineral abrasive wear resistance test, hardness measurement, and the observation of the abrasion area with a scanning laser microscope. The results of laboratory tests showed a slight dissolution of the tungsten coating protecting the synthetic PCD particles and the transfer of its components into the metallic matrix of the composite. Moreover, it was proved that an increase in the preheating temperature of the base material prior to welding has a positive effect on reducing the susceptibility of the coating to cracking, reducing the porosity of the metal deposit and increasing the resistance to abrasive wear.
Luminescence Properties of Nano Zinc Oxide Doped with Al(III) Ions Obtained in Microwave-Assisted Hydrothermal Synthesis
Authors: Strachowski Tomasz , Grzanka Ewa , Mizeracki Jan , Chlanda Adrian , Baran Magdalena , Małek Marcin , Onyszko Klaudia , Januszewski Bartosz , Przybysz Mirosław
Published: February 2022

The hydrothermal method of obtaining nano zinc oxide doped with different contents of aluminum ions (III) was presented and discussed in this paper. Aqueous solution of Zn(NO3)2*6H2O and Al(NO3)3*9H2O salts mixture were used as the synthesis precursor. In order to reduce the process time all reactions were performed in a microwave reactor. The influence of process parameters and the content of impurity ions on the properties of synthesized nano zinc oxide were analyzed. In addition to zinc oxide doped with Al(III) ions, an additional spinel phase (ZnAl2O4) was obtained. The luminescent properties of nano zinc oxide as a function of the dopant ions were also discussed. Based on the luminescence measurements results, it was found that the luminescence intensity decreases with the increasing dopant content. The obtained materials are aimed to be implemented as luminescent materials in optoelectronic and sensors.
A Novel Mineral-like Copper Phosphate Chloride with a Disordered Guest Structure: Crystal Chemistry and Magnetic Properties
Authors: Kiriukhina Galina , Yakubovich Olga , Shvanskaya Larisa , Volkov Anatoly , Dimitrova Olga , Simonov Sergey , Volkova Olga , Vasiliev Alexander
Published: February 2022

Novel copper phosphate chloride has been obtained under middle-temperature hydrothermal conditions. Its crystal structure was established based on the low-temperature X-ray diffraction data: Na2Li0.75(Cs,K)0.5[Cu5(PO4)4Cl]·3.5(H2O,OH), sp. gr. C2/m, a = 19.3951(8) Å, b = 9.7627(3) Å, c = 9.7383(4) Å, β = 99.329(4)°, T = 150 K, MoKα (λ = 0.71073 Å), R = 0.049. The crystal structure includes tetrameric copper clusters as the main building blocks, which are built of four CuO4Cl pyramids sharing apical Cl vertices. The clusters are combined through phosphate groups and additional copper-centered polyhedra to form two mostly ordered periodic layers. Between the layers and inside the framework channels, alkali ions, H2O molecules, or OH groups are statistically distributed. Na2Li0.75(Cs,K)0.5[Cu5(PO4)4Cl]·3.5(H2O,OH) is a synthetic modification of a sampleite-polymorph of the lavendulan mineral group and represents a new member in a mero-plesiotype series of copper phosphates and arsenates, for which the crystal structures contain two-periodic [Cu4X(TO4)4]∞ modules (T = As, P; X = Cl, O). Magnetically, this phase exhibits the phase transition at TC = 6.5 K, below which it possesses a weak ferromagnetic moment.
A CuNi-Loaded Porous Magnetic Soft Material: Preparation, Characterization and Magnetic Field-Controlled Modulus
Authors: Bai Jingyuan , Wang Xuejiao , Zhang Meilin , Zhang Jin , Chen Xiaolin , An Yanan , Guan Renguo
Published: February 2022

Novel porous magnetic soft materials (pMSMs) based on a poly (vinyl alcohol) (PVA) porous matrix filled with CuNi nanoparticles (NPs) of around 70 nm were synthesized. Initially, magnetic CuNi NPs were fabricated by the reduction of Ni and Cu ions with hydrazine hydrate in ethylene glycol medium in the absence of other capping agents. The pMSMs are subsequently fabricated by mixing CuNi NPs and PVA through freezing-drying process. The as-obtained pMSMs can respond to a magnetic field, i.e., the compressive modulus increase under a magnetic field of 0.23 T. The experimental results indicate that CuNi NPs can easily move to form chain-like structures under the application of a magnetic field. A combination of direct observation and finite element modeling has shown that under the influence of a magnetic field, chain-like aggregates of CuNi NPs lead to self-reinforcement of the pMSMs and, thus, to the increased compressive modulus. From a technological point of view, these materials with good magnetic responsiveness and moderate mechanical strength have potential applications in artificial muscle, soft actuators and drug release, to name a few.
Performance Measures in a Generalized Asymmetric Simple Inclusion Process
Authors: Yeger Yaron , Yechiali Uri
Published: February 2022

Performance measures are studied for a generalized n-site asymmetric simple inclusion process (G-ASIP), where a general process controls intervals between gate-opening instants. General formulae are obtained for the Laplace–Stieltjes transform, as well as the means, of the (i) traversal time, (ii) busy period, and (iii) draining time. The PGF and mean of (iv) the system’s overall load are calculated, as well as the probability of an empty system, along with (v) the probability that the first occupied site is site k (k = 1, 2, …, n). Explicit results are derived for the wide family of gamma-distributed gate inter-opening intervals (which span the range between the exponential and the deterministic probability distributions), as well as for the uniform distribution. It is further shown that a homogeneous system, where at gate-opening instants gate j opens with probability pj=1n, is optimal with regard to (i) minimizing mean traversal time, (ii) minimizing the system’s load, (iii) maximizing the probability of an empty system, (iv) minimizing the mean draining time, and (v) minimizing the load variance. Furthermore, results for these performance measures are derived for a homogeneous G-ASIP in the asymptotic cases of (i) heavy traffic, (ii) large systems, and (iii) balanced systems.
Chemical Review of Gorgostane-Type Steroids Isolated from Marine Organisms and Their 13C-NMR Spectroscopic Data Characteristics
Authors: Abdelkarem Fahd M. , Abouelela Mohamed E. , Kamel Mohamed R. , Nafady Alaa M. , Allam Ahmed E. , Abdel-Rahman Iman A. M. , Almatroudi Ahmad , Alrumaihi Faris , Allemailem Khaled S. , Assaf Hamdy K.
Published: February 2022

Gorgostane steroids are isolated from marine organisms and consist of 30 carbon atoms with a characteristic cyclopropane moiety. From the pioneering results to the end of 2021, isolation, biosynthesis, and structural elucidation using 13C-NMR will be used. Overall, 75 compounds are categorized into five major groups: gorgost-5-ene, 5,6-epoxygorgostane, 5,6-dihydroxygorgostane, 9,11-secogorgostane, and 23-demethylgorgostane, in addition to miscellaneous gorgostane. The structural diversity, selectivity for marine organisms, and biological effects of gorgostane steroids have generated considerable interest in the field of drug discovery research.
Seasonal Changes in the Prevalence of Hyperkalemia in the Emergency Department: A Single Center Study
Authors: Koyama Teppei , Makinouchi Ryuichiro , Machida Shinji , Matsui Katsuomi , Shibagaki Yugo , Imai Naohiko
Published: February 2022

Background: Hyperkalemia is an electrolyte disorder frequently encountered in the emergency department. There are few studies on seasonal variation in the prevalence of hyperkalemia. The aim of this study was to investigate the seasonal changes in the prevalence of hyperkalemia in the emergency department. Materials and Methods: We retrospectively reviewed a total of 24,085 patients presented to the emergency department between January 2012 and December 2020. Age, gender, serum potassium level, and serum creatinine level were recorded. The definition used for hyperkalemia was a serum potassium level of ≥ 5.5 mEq/L. Renal function was divided into two categories: preserved (eGFR ≥ 60 mL/min/1.73 m2) or reduced (eGFR < 60 mL/min/1.73 m2). Results: The prevalence of hyperkalemia was 2.1% in patients with preserved renal function and was 11.9% in patients with reduced renal function (p < 0.001). The prevalence of hyperkalemia was highest in winter, followed by spring, autumn, and summer in patients with preserved renal function (p < 0.001) and those with reduced renal function (p < 0.001). There was a linear correlation between monthly weather temperature and the prevalence of hyperkalemia in patients with preserved renal function (r = −0.392; p < 0.001) and those with reduced renal function (r = −0.487; p < 0.001). Conclusions: we found that the prevalence of hyperkalemia was significantly higher in winter for both patients with preserved renal function and those with reduced renal function.
Trend of Galectin-3 Levels in Patients with Non-ST-Elevation and ST-Elevation Myocardial Infarction
Authors: Mitić Branka , Jovanović Andriana , Nikolić Valentina N. , Stokanović Dragana , Andrejić Olivera M. , Vučić Rada M. , Pavlović Milan , Ignjatović Aleksandra , Momčilović Stefan
Published: February 2022

Background and Objectives: Given the fact that galectin-3 has a predictive significance on the development of myocardial dysfunction after acute myocardial infarction, the aim of our study was to examine potential factors that could be important for the dynamics of the concentration of this biomarker in the early postinfarction period. Materials and Methods: This study included 89 patients with a diagnosis of stable angina pectoris (SAP) or the first non-ST elevation (NSTEMI) or ST-elevation (STEMI) myocardial infarction, who underwent percutaneous coronary intervention (PCI). The study group included 23 patients with the first NSTEMI and 42 patients with STEMI, while the control group consisted of 24 patients with SAP hospitalized for elective PCI without a previous MI. All patients had preserved left ventricular ejection fraction. Galectin-3 levels were determined on days 1, 5, and 30 after PCI. The significance of various independent variables as predictors of galectin-3 concentration was analyzed after a series of univariate linear regression modeling in a multivariate linear regression model. Results: The average patients’ age was 63.99 ± 9.13 years. Statistically significantly higher values of C-reactive protein were established in STEMI compared to SAP (p < 0.01) or NSTEMI (p < 0.001), whereas WBC count was significantly lower in SAP than in STEMI (p < 0.001) and NSTEMI (p < 0.01) group. Although there were no statistically significant differences in measured galectin-3 concentrations between the examined groups on days 1, 5, and 30 after PCI, HTA, triglyceride level, LA size, treatment with trimetazidine and long-acting nitrates, as well as percentage of LM stenosis and E/A ratio were identified as independent predictors of galectin-3 concentration. Conclusions: In the post-MI period, very early values of galectin-3 correlate mostly with atherosclerosis factors, while on day 30 this biomarker correlates with diastolic dysfunction and “announces” left ventricular remodeling.
High Reoperation Rate in Mobile-Bearing Total Ankle Arthroplasty in Young Patients
Authors: Stadler Christian , Luger Matthias , Stevoska Stella , Gahleitner Manuel , Pisecky Lorenz , Gotterbarm Tobias , Klasan Antonio , Klotz Matthias C.
Published: February 2022

Background and Objectives: Due to inferior survival rates compared to hip and knee arthroplasty, total ankle arthroplasty (TAA) was previously mainly recommended for older and less active patients. However, given the encouraging survival rates and clinical outcomes of modern generations of TAA, some authors have also advocated TAA in young patients. Thus, the aim of this study was to evaluate age related reoperation, revision and survival rates of third-generation mobile-bearing TAAs. Materials andMethods: In this retrospective study, 224 consecutive TAA patients with a minimum follow up (FU) of 2 years were analyzed. Patients were retrospectively assigned to two study groups (Group A: age < 50 years; Group B: age ≥ 50 years). Revision was defined as secondary surgery with prothesis component removal, while reoperation was defined as a non-revisional secondary surgery involving the ankle. Results: After a mean FU of 7.1 ± 3.2 years, the reoperation rate (Group A: 22.2%; Group B: 5.3%; p = 0.003) and revision rate (Group A: 36.1%; Group B: 13.8%; p = 0.003) were higher within Group A. An age of under 50 years at time of surgery was associated with higher reoperation (odds ratio (OR): 6.54 (95% CI: 1.96–21.8); p = 0.002) and revision rates (OR: 3.13 (95% CI: 1.22–8.04); p = 0.018). Overall, lower patient age was associated with higher reoperation (p = 0.009) and revision rates (p = 0.001). Conclusions: The ideal indication for TAA remains controversial, especially regarding patient age. The findings of this study show high reoperation and revision rates in patients aged under 50 years at time of surgery. Therefore, the outcomes of this study suggest that the indication for TAA in young patients should be considered very carefully and that the association between low patient age and high reoperation rate should be disclosed to all eligible patients.
“Every Sinner Has a Future”: Religiosity, Future Orientation, Self-Control, and Marijuana Use
Authors: Desmond Scott A.
Published: February 2022

Based on previous research, I hypothesize that religious adolescents living in the United States are more likely to have a future orientation (i.e., they are more likely to think about the future), which in turn contributes to their greater self-control. I also hypothesize that a future orientation and self-control mediate the effect of religious service attendance and importance of religion on adolescent marijuana use. Based on the second wave of the National Study of Youth and Religion (NSYR), I find partial support for these hypotheses. Adolescents who believe that religion is important are more likely to think about the future, and adolescents who attend religious services frequently are less likely to use marijuana. Contrary to expectations, however, adolescents who think more about the future have lower self-control and thinking about the future and self-control do not explain the relationship between religious service attendance and marijuana use. The results also suggest that adolescents who identify as spiritual but not religious have lower self-control, and use marijuana more frequently compared to adolescents who do not identify as spiritual but not religious.
A Lightweight and Privacy-Friendly Data Aggregation Scheme against Abnormal Data
Authors: Zhang Jianhong , Han Haoting
Published: February 2022

Abnormal electricity data, caused by electricity theft or meter failure, leads to the inaccuracy of aggregation results. These inaccurate results not only harm the interests of users but also affect the decision-making of the power system. However, the existing data aggregation schemes do not consider the impact of abnormal data. How to filter out abnormal data is a challenge. To solve this problem, in this study, we propose a lightweight and privacy-friendly data aggregation scheme against abnormal data, in which the valid data can correctly be aggregated but abnormal data will be filtered out during the aggregation process. This is more suitable for resource-limited smart meters, due to the adoption of lightweight matrix encryption. The automatic filtering of abnormal data without additional processes and the detection of abnormal data sources are where our protocol outperforms other schemes. Finally, a detailed security analysis shows that the proposed scheme can protect the privacy of users’ data. In addition, the results of extensive simulations demonstrate that the additional computation cost to filter the abnormal data is within the acceptable range, which shows that our proposed scheme is still very effective.
On the Performance of Underlay Device-to-Device Communications
Authors: Nguyen Tan Nhat , Nguyen Van Son , Nguyen Hoai Giang , Tu Lam Thanh , Van Chien Trinh , Nguyen Tien Hoa
Published: February 2022

This paper comprehensively investigates the performance of the D2D underlaying cellular networks where D2D communications are operated concurrently with cellular networks provided that the aggregate interference measured on licensed users is strictly guaranteed. In particular, we derive the outage probability (OP), the average rate, and the amount of fading (AoF) of the D2D networks in closed-form expressions under three distinct power allocation schemes, i.e., the path-loss-based, equal, and random allocation schemes. It is noted that the considered networks take into consideration the impact of the intra-D2D networks, the inter-interference from the cellular networks and background noise, thus involving many random variables and leading to a complicated mathematical framework. Moreover, we also reveal the behavior of the OP with respect to the transmit power based on the rigorous mathematical frameworks rather than the computer-based simulation results. The derived framework shows that increasing the transmit power is beneficial for the OP of the D2D users. Regarding the cellular networks, the coverage probability (Pcov) of the cellular users is computed in closed-form expression too. Monte Carlo simulations are given to verify the accuracy of the proposed mathematical frameworks. Our findings illustrate that the power allocation method based on prior path-loss information outperforms the other methods in the average sum rate.
Real-Time Stylized Humanoid Behavior Control through Interaction and Synchronization
Authors: Cao Zhiyan , Bao Tianxu , Ren Zeyu , Fan Yunxin , Deng Ken , Jia Wenchuan
Published: February 2022

Restricted by the diversity and complexity of human behaviors, simulating a character to achieve human-level perception and motion control is still an active as well as a challenging area. We present a style-based teleoperation framework with the help of human perceptions and analyses to understand the tasks being handled and the unknown environment to control the character. In this framework, the motion optimization and body controller with center-of-mass and root virtual control (CR-VC) method are designed to achieve motion synchronization and style mimicking while maintaining the balance of the character. The motion optimization synthesizes the human high-level style features with the balance strategy to create a feasible, stylized, and stable pose for the character. The CR-VC method including the model-based torque compensation synchronizes the motion rhythm of the human and character. Without any inverse dynamics knowledge or offline preprocessing, our framework is generalized to various scenarios and robust to human behavior changes in real-time. We demonstrate the effectiveness of this framework through the teleoperation experiments with different tasks, motion styles, and operators. This study is a step toward building a human-robot interaction that uses humans to help characters understand and achieve the tasks.
PLL-Based Readout Circuit for SiC-MOS Capacitor Hydrogen Sensors in Industrial Environments
Authors: Enache Andrei , Draghici Florin , Mitu Florin , Pascu Razvan , Pristavu Gheorghe , Pantazica Mihaela , Brezeanu Gheorghe
Published: February 2022

For proper operation in real industrial conditions, gas sensors require readout circuits which offer accuracy, noise robustness, energy efficiency and portability. We present an innovative, dedicated readout circuit with a phase locked loop (PLL) architecture for SiC-MOS capacitor sensors. A hydrogen detection system using this circuit is designed, simulated, implemented and tested. The PLL converts the MOS nonlinear small-signal capacitance (affected by hydrogen) into an output voltage proportional to the detected gas concentration. Thus, the MOS sensing element is part of the PLL’s voltage-controlled oscillator. This block effectively provides a small AC signal (around 70 mV at 1 MHz) for the sensor and acquires its response. The correct operation of the proposed readout circuit is validated by simulations and experiments. Hydrogen measurements are performed for concentrations up to 1600 ppm. The PLL output exhibited voltage variations close to those discernable from experimental C-V curves, acquired with a semiconductor characterization system, for all investigated MOS sensor samples.
Prediction of Pedestrian Crossing Behavior Based on Surveillance Video
Authors: Zhou Xiao , Ren Hongyu , Zhang Tingting , Mou Xingang , He Yi , Chan Ching-Yao
Published: February 2022

Prediction of pedestrian crossing behavior is an important issue faced by the realization of autonomous driving. The current research on pedestrian crossing behavior prediction is mainly based on vehicle camera. However, the sight line of vehicle camera may be blocked by other vehicles or the road environment, making it difficult to obtain key information in the scene. Pedestrian crossing behavior prediction based on surveillance video can be used in key road sections or accident-prone areas to provide supplementary information for vehicle decision-making, thereby reducing the risk of accidents. To this end, we propose a pedestrian crossing behavior prediction network for surveillance video. The network integrates pedestrian posture, local context and global context features through a new cross-stacked gated recurrence unit (GRU) structure to achieve accurate prediction of pedestrian crossing behavior. Applied onto the surveillance video dataset from the University of California, Berkeley to predict the pedestrian crossing behavior, our model achieves the best results regarding accuracy, F1 parameter, etc. In addition, we conducted experiments to study the effects of time to prediction and pedestrian speed on the prediction accuracy. This paper proves the feasibility of pedestrian crossing behavior prediction based on surveillance video. It provides a reference for the application of edge computing in the safety guarantee of automatic driving.
Location-Based LTE-M Uplink Power Control and Radio Resource Scheduling
Authors: Wang Jibao , Jiang Hailin
Published: February 2022

Long-Term Evolution for Metro (LTE-M) is adopted as the data communication system in urban rail transit to exchange bio-direction train-wayside information. Reliable data communication is essential in LTE-M systems for ensuring trains’ operation safety and efficiency. However, the inter-cell inference problem exists in LTE results in throughput reduction, especially when trains are in the edge area of adjacent cells, and has negative effects on train operation. The uplink power control and radio resource scheduling scheme is studied in LTE-M system which differentiates from public cellular networks in user numbers and the availability of the trains’ locations. Since the locations of the trains are available, the interferences from the neighbouring cells can be calculated, and a location based algorithm together with soft frequency reuse is designed. In addition, a proportional fair algorithm is taken to improve uplink radio resource scheduling considering the fairness to different train-wayside communication service requirements. Through simulation, the practicability of the proposed schemes in communication system of urban rail transit is verified in aspects of radio power control and data communication throughput.
Deep Learning in Human Activity Recognition with Wearable Sensors: A Review on Advances
Authors: Zhang Shibo , Li Yaxuan , Zhang Shen , Shahabi Farzad , Xia Stephen , Deng Yu , Alshurafa Nabil
Published: February 2022

Mobile and wearable devices have enabled numerous applications, including activity tracking, wellness monitoring, and human–computer interaction, that measure and improve our daily lives. Many of these applications are made possible by leveraging the rich collection of low-power sensors found in many mobile and wearable devices to perform human activity recognition (HAR). Recently, deep learning has greatly pushed the boundaries of HAR on mobile and wearable devices. This paper systematically categorizes and summarizes existing work that introduces deep learning methods for wearables-based HAR and provides a comprehensive analysis of the current advancements, developing trends, and major challenges. We also present cutting-edge frontiers and future directions for deep learning-based HAR.
Robust Beamforming Based on Covariance Matrix Reconstruction in FDA-MIMO Radar to Suppress Deceptive Jamming
Authors: Wan Fuhai , Xu Jingwei , Zhang Zhenrong
Published: February 2022

Frequency diverse array (FDA)-multiple-input multiple-output (MIMO) radars can generate a range-angle two-dimensional transmit steering vector (SV), which is capable of suppressing mainbeam deceptive jamming in the transmit–receive frequency domain by utilizing additional degrees of freedom (DOFs) in the range dimension. However, when there are target SV mismatch, covariance matrix estimation error and target contamination, the jamming suppression performance degrades severely. In this paper, a robust adaptive beamforming algorithm for anti-jammer application based on covariance matrix reconstruction is proposed in FDA-MIMO radar. In this method, the residual noise is further determined by using the spatial power spectrum estimation approach, which results in improved estimation accuracy of the signal covariance matrix and the desired target SV. The jamming SV is obtained from vectors in the intersection of two subspaces (namely, the signal-jamming subspace derived from the sample covariance matrix (SCM) and the jamming subspace generated from the jamming covariance matrix) by an alternating projection algorithm. Furthermore, the jamming power is obtained by exploiting the orthogonality between the different SVs. With the obtained parameters of target and jamming, the optimal adaptive beamformer weight vector is calculated. Simulation results demonstrate that the proposed algorithm can cope with the mainbeam deceptive jamming suppression under various model mismatches and has excellent performance over a wide range of signal-to-noise ratios (SNRs).
Footprint Reduction of Sensor Control Modules for Remote Portable Laboratories
Authors: Arghirescu Sebastian-Alexandru , Drăgan Maria , Fratu Octavian
Published: February 2022

Following the automation of monitoring systems for pollution levels in cities or protected nature reserves, there comes a need to increase the autonomy of robotic vectors deployed in the field. Thus, it is important to consider the weight that these robots must hold in order to be able to carry out a comprehensive analysis of the environment. A balance must be struck in the size, weight, and complexity of the mobile laboratories used for measurement and the autonomy of robots, especially given that current technology does not allow, in most cases, a completely autonomous battery charging cycle. Thus, in this paper, we consider a microcontroller-based architecture for a mobile laboratory control system that will be used for installation on both an aerial and an aquatic mobile vector. We found that such a system can be repurposed for several sensor types and configurations, thus being able to massively reduce the space allocated when compared to embedded widespread products.
SmartNoshWaste: Using Blockchain, Machine Learning, Cloud Computing and QR Code to Reduce Food Waste in Decentralized Web 3.0 Enabled Smart Cities
Authors: Dey Somdip , Saha Suman , Singh Amit Kumar , McDonald-Maier Klaus
Published: February 2022

Food waste is an important social and environmental issue that the current society faces, where one third of the total food produced is wasted or lost every year while more than 820 million people around the world do not have access to adequate food. However, as we move towards a decentralized Web 3.0 enabled smart city, we can utilize cutting edge technologies such as blockchain, artificial intelligence, cloud computing and many more to reduce food waste in different phases of the supply chain. In this paper, we propose SmartNoshWaste—a blockchain based multi-layered framework utilizing cloud computing, QR code and reinforcement learning to reduce food waste. We also evaluate SmartNoshWaste on real world food data collected from the nosh app to show the efficacy of the proposed framework and we are able to reduce food waste by 9.46% in comparison to the originally collected food data based on the experimental evaluation.
Who Becomes a Fisherman? A Two-Stage Sample Selection Analysis on Small-Scale Fishery Choice and Income in Korea
Authors: Hwang Jaehee
Published: February 2022

The sustainability of coastal communities is emerging as a primary topic in policy groups. In Korea, the multifunctionality of small-scale fisheries is being emphasized, and the government has attempted various policies, such as the promotion of in-migration and the fishery industry. However, despite the diverse alternatives, the population and fisheries have been continuously downsizing. This trend threatens the sustainability and pluralistic values of coastal communities. This study identifies the crucial determinants needed to expand small-scale fisheries and enhance the economic motivation for sustainable coastal communities. The analysis is conducted with a two-stage Heckman selection model using the Korea Fishery Census and the Agricultural Census. The estimation results show that the socioeconomic incentives and performance of fisheries in coastal areas are limited. In particular, although the policy pays attention to young, highly educated, and in-migrant groups, it seems to have a limited preference for small-scale fisheries due to economic, societal, and institutional constraints. On the other hand, the family-oriented fishing activities and self-governance unique to fishing villages in Korea could improve the multifunctionality of small-scale fisheries in Korea. In addition, when a fishery household engages in production and sales activities as a member of a fraternity or collective wholesale contract, economic outcomes significantly increase. The results suggest that it is necessary to sustain communal socioeconomic activities by opening up communities and adjusting specific operating systems of self-governance.
Hoya longlingensis and H. sichuanensis (Apocynaceae), Two New Species from Southwestern China
Authors: Huang Er-Feng , Tang Li-Ming , Zhang Zhi-Feng , Huang Jiu-Xiang , Ou Zhen-Fei , Zhang Xian-Chun
Published: February 2022

Hoya longlingensis (E.F. Huang) and H. sichuanensis E.F. Huang are two new species of Apocynaceae from Southwestern China that are described in this study. Morphologically, the two species resemble H. tamdaoensis Rodda & T.B. Tran and H. lyi H. Lév., respectively. However, H. longlingensis differs from H. tamdaoensis by its elliptic leaves, mid-vein of leaf blades raised adaxially and depressed abaxially, lateral veins 2–4-paired, corolla yellow-green, outer angles of corona convex and spreading outside obviously. While H. sichuanensis differs from H. lyi by its obovate leaves, leaf apex rounded and base cuneate, petioles 1–3.5 cm long and ca. 3 mm in diameter, calyx lobes triangular, and corona whitish.
Professor Marija Gimbutas’ adventure with prehistoric amber and the results for us
Authors: Czebreszuk Janusz , Čivilytė Agnė
Published: February 2022

This article is dedicated to Gimbutas’ approach to prehistoric amber and the results of her hypothesis for 21st-century archaeology. Amber is one of the constant threads in her research but hypotheses about amber have yet to be summarized. It is our aim to discuss the assessment of Gimbutas’ studies of amber in a non-exhaustive format, which can help to understand the focal points of her research, especially the chronological changes of amber utilisation from the Mesolithic to the Bronze Age. We w will discuss Gimbutas’ proposals in respect to the amber routes and interpret her ideas from the perspective of recent research. We will also discuss the question of the possible utilisation of amber from western Ukraine’s Klesov deposit, which is very similar to succinite. This article focuses especially on the question of how we can understand the meaning of amber in the Bronze Age and suggests the idea that amber had a symbolic rather than economic value in the local Eastern Baltic societies.
A pénzügyi kultúra az európai oktatásban
Authors: Kovács Levente , Pásztor Szabolcs
Published: February 2022

Jelen tanulmány elsőként arra kíván rávilágítani, hogy a világ más régióival való összevetésben milyen helyzetben van az európai pénzügyi kultúra, és az egyes európai uniós országok milyen jellegű programokat indítanak/indítottak a kultúra javítása érdekében. Feltárjuk, hogy milyen kapcsolat van a fejlettség legáltalánosabb mutatója és a pénzügyi kultúra között, valamint rámutatunk arra, hogy a pénzügyi műveltség fokozatos emelésével további növekedési potenciál azonosítható. Megvizsgáljuk, hogy egyes európai országok gyakorlatát megismerve, a jó gyakorlatok hogyan alkalmazhatók máshol. Mindennek azért is van komoly jelentősége, mert az új típusú koronavírus-járvány és a folyamatosan zajló digitalizáció újabb kihívások elé állította a pénzügyi műveltség fejlesztésén dolgozó szakembereket, akiknek az új kihívások ellenére is fel kell hívniuk a figyelmet a pénzügyi kultúra fontosságára. Öt európai ország összehasonlításával láthatóvá válik, hogy a komplex, számos szereplőt magukban foglaló programok a legeredményesebbek, de ezeken túl szükséges lenne a pénzügy kultúrát érintő tantárgyak oktatásának kötelezővé tétele.
A pénzügyi kultúrához kapcsolódó képzések : Összehasonlító elemzés (2016-2020)
Authors: Németh Erzsébet
Published: February 2022

A kutatás célja annak a vizsgálata, hogy 2016 óta történt-e előrelépés a pénzügyi tudatosság fejlesztésében Magyarországon. A tanulmány bemutatja a pénzügyi kultúra fejlesztésével kapcsolatos állami szerepvállalás változásait, kérdőíves felmérésben vizsgálja, hogy a közoktatáson kívüli képzéseken milyen szervezetek kiket és milyen tematika alapján képeznek, és értékeli a programok minőségbiztosítottságát is. 2016 és 2020 között egyre fokozódó figyelem irányult a pénzügyi kultúra fejlesztésére, miközben a képzések túlnyomó többsége továbbra is a legkönnyebben elérhető iskolás korosztályt érinti. A Nemzeti Alaptanterv az iskolák számára a célok között megjelölte a gazdasági és pénzügyi nevelést. A szakgimnáziumokon kívül azonban kötelező tantárgyként nem oktatnak ilyen ismereteket. A Kormány 2017-ben elfogadta a lakosság pénzügyi tudatosságát fejlesztő stratégiát, illetve megjelentek az első akkreditált pénzügyikultúra-tankönyvek. A közoktatáson kívüli szervezetek eredményei azt mutatják, hogy a képzési programok és az azokon résztvevők száma mintegy háromszorosára nőtt. A képzések átlagos időtartama hosszabb lett, megjelentek a főleg felnőtteknek szóló, többnapos tanfolyamok. A tudásátadás fókuszában továbbra is az egyéni takarékoskodás és pénzügyi tudatosság, a pénzügyi önismeret, attitűd és viselkedés áll. A képzések négyötödében van tananyag és tematika, de ezek többsége nem akkreditált, és nem érhető el nyilvánosan. A képzések mintegy 40 százaléka méri az eredményességet.
Publicación de encuestas electorales frente a la intención de voto en la región andina
Authors: Pacori Paricahua Edwerson William , Pacori Paricahua Angélica Karina , Pacori Paricahua Joselin Yaneth , Rodriguez Cardenas Edwar
Published: February 2022

El presente estudio ha contribuido en determinar las consecuencias de la publicación de encuestas electorales frente a la intención de voto en la región andina. Este estudio de tipo aplicativo, diseño explicativo, de corte transversal, y retrospectivo. Los datos se obtuvieron procesando los resultados del cuestionario intrapersonal de una muestra de 350 electores. Respecto a las encuestas, los electores han indicado que el 65.1% publican por la Web o internet, el 28.0% publican por medios televisivos locales, el 14.6% publican por medios radiales locales, y el 6.9% publican por medios escritos locales. Conclusión: Se comprobó que existe consecuencias de la publicación de encuestas electorales en los medios de comunicación frente a la intención de voto (P=0.001) donde el 46.8% apoya al ganador de las encuestas, el 27.7% apoya al que sube en las encuestas, y el 7.1% apoya al perdedor en las encuestas en la región andina.
Léxico jurídico. Antecedentes y perspectivas
Authors: Gárate Amoroso Julio , Orellana Toledo Fernando , Sánchez Santander Cinthia , Guamán Quiridumbay Josseline
Published: February 2022

El presente artículo de investigación se fundamenta en el estudio del léxico jurídico y como este ha evolucionado del lenguaje ordinario a un lenguaje técnico, la necesidad de los juristas de implementar un lenguaje claro y preciso, evitando las ambigüedades con el uso de palabras precisas y justas alejándose así de todo riesgo de malas interpretaciones. Es menester plasmar la relevancia que denota el lenguaje técnico jurídico y como la terminología de este se ha forjado a través de construcciones arcaizantes, frases formularias, latinismos, perífrasis y otros usos lingüísticos que resalta la esencia del verdadero léxico jurídico. A través de esta investigación se pretende interpretar la estructura y características del léxico jurídico, así como las funciones que este desempeña en la vida practica de quienes ejercen la ciencia del derecho. Este artículo es producto de una investigación basada en una revisión bibliográfica, crítica, y documental recurriendo al método descriptivo-argumentativo. Para la elaboración de este artículo hemos acudido a revistas científicas como: Scielo, Redalyc, Dialnet y una búsqueda exhaustiva de libros jurídicos. Como resultado tenemos que la finalidad del léxico jurídico es la univocidad semántica, la economía léxica y la precisión conceptual o claridad entre quienes los expresan.
PENGARUH FAKTOR PERILAKU TERHADAP PENGGUNAAN JAMBAN CEMPLUNG
Authors: Murni Khairani , Nyorong Mappeaty , Anto Anto
Published: February 2022

ABSTRAK

Jamban yang tidak sehat dapat membawa efek terhadap penurunan tingkat kesehatan Berdasarkan data Dinas Kesehatan Kabupaten Labuhan Batu Selatan  tahun 2019, di ketahui bahwa cakupan PHBS di kabupaten Labuhan Batu Selatan untuk ketersediaan jamban sehat hanya sebesar 52,7%, adapun tujuan peneitian ini adalah untuk menganalisis Pengaruh Faktor  perilaku terhadap penggunaan jamban cemplung di desa sisumut kecamatan kota Pinang Kabupaten Labuhan Batu  Selatan.Penelitian ini menggunakan jenis penelitian kuantitatif dengan rancangan cross sectional study. Lokasi penelitian ini dilakukan di desa Sisumut kecamatan Kota Pinang Kabupaten Labuhan Batu  Selatan. Waktu Penelitian berlangsung mulai bulan September sampai dengan oktober 2019. Populasi penelitian yaitu seluruh kepala keluarga di desa Sisumut kecamatan Kota Pinang Kabupaten Labuhan Batu Selatan dengan jumlah sebanyak 290 kepala keluarga. Teknik yang digunakan adalah purposive sampling berjumlah 37 orang. Data hasil survey dianalisis dengan menggunakan uji Chi Square dan regresi logistik.Berdasarkan hasil penelitian diketahui bahwa, pengetahuan (p=0,000), sikap (p=0,000), ketersediaan akses (p=0,000) berpengaruh terhadap penggunaan jamban cemplung di Desa Sisumut Kecamatan Kota Pinang Kabupaten Labuhan Batu  Selatan.Berdasarkan hasil penelitian, dapat disimpulkan bahwa pengetahuan, sikap dan ketersediaan akses berpengaruh terhadap penggunaan jamban cemplung di Desa Sisumut Kecamatan Kota Pinang Kabupaten Labuhan Batu  Selatan, Sehingga adapun saran dalam penelitian ini diharapkan agar membuat program penyuluhan tentang pemanfaatan jamban cemplung kepada masyarakat.
PENINGKATAN KETERAMPILAN BERBICARA DALAM BAHASA INGGRIS BERBASIS PARIWISATA BAGI SISWA SD DI DESA HUTARAJA
Authors: Silaban Putri sari
Published: February 2022

Abstract

English language speaking mastery is a basic need for people who rely on the tourism sector. Just like people who live in Hutaraja, this need is crucial to them in selling their creation to the tourists moreover to the foreign tourist who often visit Hutaraja. Sadly, this chance must be faced by the people of Hutaraja who do not master any English language speaking mastery. This problem encouraged to the implementation of this training. This training had given positive result to Hutaraja’s people English language speaking mastery. However, further training is needed in order to enhance English language speaking mastery of people in Hutaraja so that they can have better insight and better English language speaking mastery in communicating with foreign tourists who visit Hutaraja.

 

Keywords: Training; Basic Skills; Speaking; English
Deteksi Dini PTM, Pemeriksaan Gula Darah, Kolesterol dan Asam Urat
Authors: AgustinaSimbolon Ganda , Linda Simbolon Juana , Sitompul Emilia
Published: February 2022

Penyakit Tidak Menular (PTM) dewasa ini telah menjadi masalah kesehatan masyarakat yang cukup besar khususnya di Indonesia. Hal ini ditandai dengan bergesernya pola penyakit yang sering disebut dengan transisi epidemiologi yang ditandai dengan meningkatnya kematian dan kesakitan akibat penyakit tidak menular seperti stroke, jantung dan diabetes mellitus. Penyebab kematian tertinggi di dunia adalah penyakit degeneratif. Penyakit degeneratif merupakan istilah yang secara medis digunakan untuk menerangkan adanya suatu proses kemunduran fungsi sel saraf tanpa sebab yang diketahui, yaitu dari keadaan normal sebelumnya ke keadaan yang lebih buruk. Meningkatnya kasus Penyakit Tidak Menular (PTM) secara signifikan akan menambah beban masyarakat dan pemerintah, karena penanganannya membutuhkan waktu yang tidak sebentar, biaya yang besar dan teknologi tinggi. Untuk itu perlu diadakan pemeriksaan kadar glukosa darah, kolesterol dan asam urat sehingga bisa terdeteksi sejak dini serta diadakan penyuluhan tentang pentingnya pola hidup sehat dan pencegahan penyakit diabetes melitus, hiperlipidemia serta asam urat. Tingkat derajat kesehatan masyarakat dapat ditingkatkan diantaranya dengan adanya kegiatan pemeriksaan kesehatan yang memungkinkan sekali untuk diadakan pemeriksaan kesehatan secara langsung yaitu pemeriksaan glukosa, asam urat, dan kolesterol.
Pelatihan Relapse Prevention pada Pecandu Narkoba dalam Program Paska Rehabilitasi
Authors: Samosir Frans Judea
Published: February 2022

Relapse merupakan masalah yang sering terjadi pada pecandu narkoba yang telah menjalani program pemulihan kecanduannya di sebuah pusat rehabilitasi narkoba. Kurangnya penguatan dan pendampingan setelah keluar dari rehabilitasi dapat menjadi salah satu pemicunya. Pendampingan dan penguatan ini dapat juga diberikan dalam program paska rehabilitasi (aftercare) Oleh sebab itu, kegiatan pelatihan relapse prevention (pencegahan kekambuhan) menjadi wujud penguatan kepada pecandu dalam pemulihan. Kegiatan pelatihan ini diberikan kepada enam klien selama sepuluh kali pertemuan di sebuah paska rehabilitasi. Kegiatan dilakukan dalam empat tahap yakni analisis kebutuhan, observasi klien, desain pelatihan dan pelaksanaan pelatihan. Hasil yang diperoleh bahwa pecandu narkoba dalam pemulihan di paska rehabilitasi semakin memahami diri dan bagaimana cara menjaga kualitas pemulihannya.
PENYULUHAN DAN PEMERIKSAAN KESEHATAN (TENSI DARAH, Hb, KOLESTEROL, GULA DARAH, ASAM URAT ) DI DESA TELAGA SARI TANJUNG MORAWA
Authors: Suryani Suryani M.F. Situmeang , Setiyawati Dewi , - Suparni
Published: February 2022

Salah satu wujud kepedulian Perguruan Tinggi terhadap lingkungan sosial dan budaya masyarakat (Tri Dharma Perguruan Tinggi) adalah Pengabdian masyarakat. Dengan terjalinnya hubungan yang serasi antara Perguruan Tinggi dengan masyarakat, maka diharapkan adanya masukan untuk perbaikan mutu Perguruan Tinggi dimata masyarakat yang memerlukannya. Telah dilaksanakan Kegiatan Pengabdian Masyarakat Penyuluhan Kesehatan  Pemeriksaan Kesehatan Tekanan Darah, Haemoglobin, Kadar gula darah, Kadar  Asam urat dan  Kadar Kolesterol di Desa Telaga Sari Tanjung Morawa Pada Hari Jumat  tanggal 2  Oktober 2020. Sebelum dilakukan penyuluhan, pengetahuan masyarakat mengenai penyakit hipertensi, diabetes, asam urat,  kolesterol dan anemia masi sangat rendah. Setelah dilakukan penyuluhan, dilakukan kembali evaluasi berupa post tes pada orang yang sama sebanyak 20 orang, didapatkan semua masyarakat sudah meningkat pengetahuannya. Pemeriksaan Kesehatan bagi masarakat Desa Telaga Sari Kecamatan Tanjung Morawa Kabupaten Deli Serdang berjumlah 103 Orang yang terdiri dari 20 orang Laki- laki dan 83 orang perempuan dimana usia yang di atas 40 tahun berjumlah 74 orang, yang tekanan darahnya meninggi berjumlah 44 orang (49,7%), kadar Hb yang di bawah normal berjumlah 18 orang (17,47%) Kadar gula darah yang meninggi 32 orang (31,6 %), Kadar asam Urat yang meninggi berjumlah 15 orang (14,6 % ) dan 53 orang (51,45 % ) yang kadar kolesterolnya yang meninggi.