bluuebunny/crossref_metadata_2025_split huggingface dataset:
PMSM Vector Control Based on Fuzzy PID Controller
Authors: Jin Fuzhi , Wan Heng , Huang Zefeng , Gu Mengxu 
Published: August 2020

Abstract
The traditional motor speed control method is to use PID controller to adjust it, but the accuracy and anti-interference ability of its control effect are difficult to be guaranteed. Because the side effects of its error selection, “weighted sum” strategy may not be the best and integral feedback. In the case of motor load variation, this paper presents a control method based on Fuzzy PID controller. The simulation model of PMSM (permanent-magnet synchronous motor) is built in Matlab / Simulink. The simulation experiment shows that the fuzzy PID controller has higher accuracy and anti-interference ability than the classical double closed-loop PID vector control in PMSM vector control.
Analysis of the Influence of High-Power Microwave Short Pulse on IFM Performance
Authors: Hongyang Jia , Dengxin Li , Yuchen Ye , Chao Wang , Naichang Yuan 
Published: August 2020

Abstract
In the working scenario of instantaneous frequency measurement (IFM) system, when the high-power short pulse enters the receiver of IFM system as an interference signal, it will have a certain impact on the receiver’s normal processing of the counter radar signal. This paper discussed the influence a receiver gets while doing frequency measurement, when short pulses are in different part of the received radar signal in time domain and frequency domain.
A new 1-bit configurable phase array antenna based on ‘ancient coin-like’ metasurface
Authors: Hu Xiang Ming , Zheng Qiu Rong , Zhang Bin 
Published: August 2020

AbstractDue to the low price, high efficiency and flexible manipulations, the metasurface has attracted more attentions. This paper proposes a new 1-bit configurable reflection array antenna with 11*11 unit cells. The unit cell in the metasurface, which is integrated with one PIN diode, shaped as ‘ancient coin’ can generate reflection phases between 165°-195° (180°±15°). The new phase array antenna can realize flexible manipulations to EM (electromagnetic) waves.
Application Research on DOA Estimation Based on Software-Defined Radio Receiver
Authors: Li Zuokun , Zhang Dongdong , Zhu Qichao , Gu Henghao , Huang Shuai , Kuang Yi , Liu Yingwen 
Published: August 2020

Abstract
Using a KerberosSDR, with four omnidirectional antennas and a raspberry pi, a four-element system of direction of arrival estimation system is formed. The four antennas are arranged in accordance with a uniform linear array and a uniform circular array respectively. Four algorithms including Bartlett, Capon, MEM, and MUSIC are used. Finally, the MUSIC algorithm is used to estimate the direction of arrival of the static target signal source, and the results are displayed on the map.
High Power Microwave Signal Detection Based On Second Order Multisynchrosqueezing Transform
Authors: Dengxin Li , Hongyang Jia , Yuchen Ye , Chao Wang , Naichang Yuan 
Published: August 2020

Abstract
This paper puts forward a generalization of the multisynchrosqueezing transform (MSST) using the second order local estimate of instantaneous frequency, which could localize a signal with high precision both in time and frequency. Numerical signal simulation result verifies its advantage on processing high power microwave (HPM) signals in different environments, this time-frequency analysis method provides an idea for HPM signal detection and feature analysis.
A reconfigurable integrated architecture of motion control system
Authors: Wang Qinghua , Hu Yanhua 
Published: August 2020

Abstract
A motion control system comprises a power module, a plurality of servo motors, a servo control module, a motion control module and a microprocessor; the power module controls the working power supply output by the alternating-current power supply; the plurality of servo motors converts current signal of the output current flowing to an encoder output signal; the servo control module converts the encoder output signal into a first logic control signal; the microprocessor converts the first logic control signal into a third control signal and controls the servo control module to adjust the power module, which changes the working power supply output by the alternating-current power supply so as to drive servo motors. This text provides a motion control system which integrates motion controller and supports multi-axis alternating-current servo driver to realize automatic control of the servo driver and improve control precision of the servo driver.
Image Super-Resolution via Residual Blocks and Non-Negative Matrix Decomposition
Authors: Xue Zhishuang , Liu Xiaofang , Huang Hui , Zhang Gen 
Published: August 2020

Abstract
In order to solve the problems that the existing super-resolution algorithms based on convolutional neural network do not fully utilize the feature information at all levels, which results in low reconstruction accuracy, and the deep network may resulting in the gradient disappearing, an image super-resolution reconstruction algorithm based on residual blocks and non-negative matrix decomposition is proposed. The proposed residual block can gradually learn the characteristics of the input image, the computational burden of the network is shared on each single residual block, thus the network complexity decreases. The input image and output image are fused by non-negative matrix decomposition to obtain more detail information of high-resolution image. Experiments on the benchmark dataset show that the proposed algorithm improves the PSNR, structural similarity and visual effect.
A Method of Distinguishing Tea varieties Based on Hyperspectral Imaging
Authors: Yanqi Zhong , Zhiliang Kang , Peng Wang , Xiong Luo 
Published: August 2020

Abstract
In order to realize the rapid and non-destructive identification of tea varieties, this paper based on hyperspectral imaging technology to find the optimal discrimination model of tea varieties. This article is mainly divided into three aspects: the discriminant model of tea varieties based on spectral characteristics, the discriminant model of tea varieties based on image features, and the discriminant model of tea varieties based on spectral-image fusion features. The experimental results show that Model 1 uses the full-spectrum feature combined with support vector machine (SVM) model, which can distinguish the accuracy of different tea varieties up to 100%. Model 2 is based on the GLCM texture feature based on the characteristic gray image combined with the SVM model, and the discrimination accuracy of different tea varieties reaches 100%. Model 3 discusses the impact of different preprocessing methods on the accuracy of classification under the fusion of two information features, determines Minmax as the best preprocessing method, and obtains 100% classification accuracy in the test set.
The optimal allocation of emergency materials for multiple points on water based on genetic algorithm
Authors: Bin Li , Yuzhu Zhu , Yun Zou 
Published: August 2020

Abstract
In order to study the shortest time of emergency supplies allocation, the supply chain of rescue materials is divided into three levels that is supply areas, shore rescue points and multiple accident points. Taking the limited period of emergency supplies as a prerequisite, a material distribution model is built for studying the shortest time of material distribution from rescue base to accident site; considering the sustainability of rescue base supplies, a land material distribution model is built for studying the minimum cost of transportation problem. According to the dispatching priority of emergency supplies at each accident site, a genetic algorithm is designed to solve it, and a approximate optimal rescue material distribution plan is obtained.
Research on triaxial array induction logging response in inclined anisotropic formation
Authors: Zhang Miaoyu , Wu Jie , Liu Yanping 
Published: August 2020

Abstract
The logging response calculation and fast inversion are the key and difficulties for logging data interpretation and formation parameter estimation of the triaxial array induction logging. We transform the formation conductivity from media coordinate to instrument coordinate based on coordinate transformation theory. This paper examines anisotropic response of the triaxial array induction in inclined anisotropic formation by finite element method. The greater the anisotropy coefficient is, the more obvious the curve separation. The apparent conductivity decreases with the increase of dip angle for the coaxial system, but the coplanar system increases. The research results show that the apparent conductivity of the coplanar system appears as obviously positive and negative horns on the horizontal interfaces, which is generated by the accumulated surface charge at the boundary of the layer.
Design of Motion Control System of Smart Car
Authors: Li Xuexia , Li Jianyong , Liu Xuemei , Liu Haodong 
Published: August 2020

Abstract
Based on the design of Freescale intelligent tracking car, the kinematics model is established according to the motion characteristics of the car after introducing the control system and the composition of each functional module of smart car. In order to make the smart car move stably and quickly in the predetermined track, the corresponding PID control algorithm is proposed to control the steering system and power system of the car, respectively. The experimental verification shows that the car basically achieves the goals of “stable”, “accurate” and “fast” operation in the automatic control theory.
Developing of graphene oxide (GO) bio-filter for pathogenic bacterial control in farmed Asian clam, Corbicula fluminea
Authors: Akrimah Y , Mohd Zin F A , An’amt M N , Lee S W , Aweng E R 
Published: August 2020

Abstract
Graphene oxide (GO) possess a potential as an antimicrobial agent in the aquaculture sector to substitute the role of antibiotic. Meanwhile, the consumption of Asian clam Corbicula fluminea has been gaining popularity throughout Malaysia in a line with the increasing cases of food poisoning caused by pathogenic bacteria resulted from the clam consumption. Thus, this experiment was conducted to investigate the potential of graphene oxide (GO) as an antibacterial filter in controlling pathogenic bacteria i.e. Escherichia coli, Salmonella spp., Vibrio spp. and coliform bacteria. A total of 180 clams were reared in both systems i.e. system installed with graphene oxide (GO system) and system with normal filter (Control system) for 2 weeks. Then, the bacteria were screened and enumerated from Asian clam tissue and farm water samples using total plate count (TPC) method and most probable number (MPN) method by comparing these two rearing systems. The results showed all isolated bacteria were 100 % reduced from farm water while coliform bacteria with 94% reduction in GO system. Conversely, bacteria reduction in clam tissue sample in GO system was varied and relatively low for coliform bacteria, Salmonella spp., total bacteria, Vibrio spp. as it reduced by 60.71 %, 31.38 %, 18.16 % and 1.34 %, respectively, while E. coli showed increasing bacteria count by 12.52 %. Therefore, it can be concluded that GO system is effective in reducing pathogenic bacteria in water compared to Asian clam tissue sample.
Biodegradation of PAH-polluted soil by indigenous bacteria
Authors: Fazilah A , Ismail N , Darah I 
Published: August 2020

Abstract
Polycyclic aromatic hydrocarbons (PAH) are environmental pollutants and phenanthrene is one of the PAH compounds shown to be toxic, mutagenic and carcinogenic. The efficient way to clean up and minimize the PAH pollution in the environment is by bioremediation process. Therefore, the objective of this study was to determine the degradation activity of phenanthrene-degrading bacteria by inoculating the bacterial culture into soil treated with phenanthrene as a carbon source. Ultrastructure morphology of bacterial cells during degradation process in soil were observed using Scanning Electron Microscope. Addition of Acinetobacter sp. P3d, Bacillus sp. P4a, Pseudomonas sp. P6 to soil microcosms supplemented with phenanthrene resulted in phenanthrene degradation. The degradation resulted in more visible, particularly when all the three bacterial cultures were mixed together. The degradation rate for Consortium A was 100% followed by Consortium B (87.45%), Consortium D (76.58%) and Consortium C (76.13%) for only 30 days of cultivation. Based on this study, pure culture of the Acinetobacter sp. P3d and mixed cultures of consortia A; Acinetobacter sp. P3d, Bacillus sp. P4a and Pseudomonas sp. P6 were selected as a potential bacterial culture to carry out bioremediation study in the phenanthrene contaminated soil.
The Quality of Elephant Ginger Dried by Using Modified Hohenheim Dryer under Tropical Climate
Authors: Khathir R. , Agustina R. , Putra B. S. , Rahmadi  
Published: August 2020

Abstract
The objective of the study was to determine the quality of elephant ginger (Zingiber officinale) dried by using a modified Hohenheim dryer designed based on the Hohenheim type tunnel dryer at University of Kassel, Germany. Drying is the oldest method could be used to extend the shelf-life of the product, and the thickness of the material is one of the factors that will influence the drying process. The study was conducted under the tropical climate, in Banda Aceh, Indonesia. The elephants ginger were sliced at different thickness of 3, 4 and 5 mm. Research parameters included solar irradiation, temperature, relative humidity (RH), drying time, drying rate, moisture content, ash content, yield, and colour. To assess the consumer acceptance to the dried ginger, a consumer test was also run to 25 respondents by using hedonic scale on the colour and flavour properties. The study showed that the drying of elephant ginger by using a modified Hohenheim dryer was promising to apply at slice thickness of 3 mm under the tropical climate. The average daily solar irradiation was 403.2 W/m² and the average temperature of drying chamber was 49.5˚C, and the total drying time was 7h. The drying curve of ginger did not follow the ideal drying rate curve; therefore, the modification of the dryer is still needed to improve its performance. However, the quality of dried ginger was good since it had met the export standard for moisture. Nevertheless, the ash content should be reduced to meet this standard by pilling the tuber. According to the sensory analysis, the respondents preferred the colour of ginger dried at slice thickness 3 mm to 4 and 5 mm, but they preferred the flavour of both slice thickness 3 and 4 mm to 5 mm. The colour properties at slice thickness of 3 mm were R-value by 204, G-value by 187, B-value by 119, L-value by 76, a-value by -3 and b-value by 36 and the colour properties among different slice thickness of dried ginger were strongly explained by b-value.
A Preliminary Study on the Potential Dye Adsorbance by Activated Meretrix lamarckii (M. lamarckii) Shells
Authors: Syuhadah Subki Noor , Ying Han Lim 
Published: August 2020

Abstract
Dyestuff manufacturing and consuming industry have led to water pollution through their discharge of untreated wastewater. Presence of dye pigments in water bodies may cause carcinogenic, mutagenic effects and caused harm to the entire aquatic ecosystem. This research has carried out to examine the adsorption potential of treated Meretrix lamarckii (M. lamarckii) shells towards Malachite Green (MG) dye removal. Activation with hydrochloric acid (HCl) and potassium hydroxide (KOH) was used for the conversion of seashells into TS1 and TS2 respectively. Following that, batch adsorption studies were carried out at 30°C using TS1 and TS2 to study the effect of contact time, pH, initial concentration of adsorbate and adsorbent dosage on dye removal percentage. The optimized contact time for TS1 was 210 minutes, with the best performance in pH 10 aqueous medium, 10 mg/L initial concentration of MG and optimum dosage of 1.0 g. Whereas for TS2, the optimized contact time was shorter than TS1, which was only 90 minutes to attain equilibrium state. The optimized pH and initial concentration of adsorbate were the same as TS1. While optimized adsorbent dosage for TS2 was lower than that of TS1, which was 0.8 g. Based on the results obtained, TS2 was found to be more effective in MG dye removal than TS1. High efficiency of TS2 was due to the presence of alkyl halide group and its larger total surface area. From the study, it can be concluded that treated M. lamarckii possesses high adsorption efficiency and potential to become a new introduce adsorbent in wastewater treatment technology.
The Diversity of Anuran Species in Urban Forest in Selangor
Authors: S Nadia , M T Marina , R Nadirah , M N Siti Fara Najua , A A Muhammad Faris , M K Mohamad Roslan , M A Alias 
Published: August 2020

Abstract
This study aimed at determining anuran diversity in Compartment 12 and 13 of Ayer Hitam Forest Reserve (AHFR), Puchong, Selangor. The study determining species diversity, richness and evenness, analyzing correlation between the anuran species with the microclimate and updating anuran species status. Fieldwork was carried out from October 2016 to February 2017 investing six person of sampling effort. Fifteen of 300 m nocturnal transect lines have been constructed in this inventory at three different study areas; walking trails, streams, and swampy. A total of 119 individuals belonging to 18 species came from five anuran families were recorded. Most abundant species recorded were Fejervarya cancrivora, Leptobrachium hendricksoni, and Pulchrana laterimaculata. Compartment 12 found to have the highest species diversity and evenness compared to Compartment 13. Stream has the highest species composition with Ingerophrynus parvus and Leptobrachium hendricksoni each with eight individuals respectively. Most anuran species recorded were highly associated with temperature such as Limnonectes malesianus, Amnirana nicobariensis, Limnonectes plicatellus, and Fejervarya limnocharis. This study also recorded Amnirana nicobariensis, Kalophrynus pleurostigma, and Pulchrana laterimaculata for the first time for AHFR. Therefore, this further research is needed by increasing forest coverage for the anuran diversity study as a reference for future study.
Optimization of Flavonoid Extraction from Guava Leaves for Application in Reducing Urea Transformation in Soil
Authors: Roslan H , Mansor N , Yahya W Z N , Affendi N M N 
Published: August 2020

Abstract
Flavonoid group is a versatile compound as it can be used in the food, pharmaceutical, and urea fertilizer industry. Five main factors have been consistently studied for optimization, which are solid-to-solvent ratios, solvent-to-solvent ratios, the temperature of extraction medium, exposure time, and equipment power intensity. Factors Solid-to-Solvent Ratio and Time showed the greatest effects on the extraction. Response surface methodology is used to determine the best conditions for flavonoid extraction from guava leaves using an ultrasonic bath. There exist incongruencies between researchers in determining which solvent is best used for flavonoid extraction. Experimentally, the highest total flavonoid content (TFC) tested using Fe (II) colorimetry was 50.44 mg of Quercetin-equivalent per gram of dry weight leaves (mg QE / g d.w.) using 1:1:1 ratio of Water-Ethanol-Methanol (WEM), a first tri-solvent based extraction for flavonoid. Further testing via urea colorimetry shows that diluted compound of 8% of flavonoid extract can reduce urea transformation starting Day 3 of soil sampling but its performance is not at par with the commercial n-Butylphosphorothioic Triadmide (NBPT) compared in this study. Nevertheless, the effect shows a positive outlook on the extract’s potential as a urease inhibitor.
HEAVY METALS IN TUNA SPECIES MEAT AND POTENTIAL CONSUMER HEALTH RISK: A REVIEW
Authors: Norhazirah A A , Shazili N A M , Kamaruzzaman Y , Sim S F , Ahmad A , Ong M C 
Published: August 2020

Abstract
Marine fishes are one of the protein sources and they form a significant part of human diet around the world. In particular, tuna fisheries are considered as the largest and most specialized commercially important group of species among all commercial fishes. The preparing tuna methods such as cooking and canning might alter the level of heavy metals inside the meat. The heat that applied to the meat might be decreased the moisture content in tuna meat, thus give some effects to the heavy metal level. Other than that, the different composition and function of different parts of tuna can contribute to the various level of heavy metals analysed. The metal contamination in tuna species meat has put serious question to the safety level of fish intake to the community. It represent an abiding threat to human health as it has been linked to some adverse health effects such as mental retardation, kidney damage, and various types of cancer and even worse, death could occur.The following review articles presents the findings of the work carried out by the various researchers in the past on the heavy metal pollution in samples of Tuna species around the world.
Synergistic Effect of Synthetic Pheromone and Kairomone-Releasing Food Baits in Mass Trapping System of Red Palm Weevil, Rhynchophorus ferrugineus
Authors: Muhammad Firdaus M H , Chuah T S , Wahizatul A A 
Published: August 2020

Abstract
The red palm weevil (RPW), Rhynchophorus ferrugineus is one of the most damaging pests of major cultivated palms worldwide, and is a serious threat to Malaysia’s coconut and oil palm industries. Current tactic to manage the weevils are largely based on aggregation pheromone traps. Thus, it is crucial to come up with an effective method to manage the pest based on pheromone based mass trapping system before it causes any significant economic losses. In the present study, the synergistic effect of synthetic pheromone and kairomone-releasing food baits was evaluated in highly infested area of Kuala Terengganu. Pineapple food bait was the most effective in capturing RPW with the greatest capture of weevils (12 individuals/trap), followed by oil palm petiole (10.8 individuals/trap), sugarcane (7.6 individuals/trap), and the lowest capture was coconut fruit (6.6 individuals/trap). More females (166 individuals) were trapped than males (54 individuals) with the sex ratio (1 male: 3.1 females). In terms of environmental parameters, the higher amount of rainfall and relative humidity, the lower the numbers of captured weevils were observed. In contrast, higher reading of weekly temperature influenced higher numbers of captured weevils. The inconsistency weather during monsoon season should be considered in implementing the mass trapping system of RPW. Finding from this study is important for a more effective and long-lasting method of pheromone based mass trapping in integrated RPW control strategy program.
Response of Celery to addition of nitrogen and spray with salicylic acid in the leaves content of nutrients
Authors: Al-ubaidy Ridha M. , Al-Umrany Hussein H. , Al-Shmarmy Lamiaa A. 
Published: August 2020

Abstract
To study the response of the celery plant to nitrogen fertilization and spray with salicylic acid in the leaves content of nutrients, the research was conducted in one of the fields of the Department of Horticulture and Gardening Engineering / College of Agriculture / University of Baghdad within the 2019-2018 season. The research was carried out as a global experiment and with the design of complete randomized sectors (RCBD) and with three replicates, the first factor included the addition of nitrogen with three levels and its symbol (N) (N1 control), (N2) g / m2 18 ), (N3) 37 g / m2 and the second factor spraying acid salicylic is denoted by (S), (S1 control ), (S2 25 mg / L ), (S3 50 mg / L ), (S4) 75 mg / L ) and the interference between them. The results showed that the treatment of interference between nitrogen fertilizer and spray with salicylic acid (N3S4) in The percentage of N, P and K elements in the leaves was 1.80, 0.0080 and 2.91%, and the element Mg, Fe and Ca were 4376.3, 3111,and 6669 mg.kg − 1 dry matter, respectively.