Miracle-dz/UniFAR-FTUs huggingface dataset:
Optical design of digital camera zoom lenses employing plastic lens elements

There is a great demand today for ever-smaller low-cost zoom lenses for digital cameras. To meet this demand, we have been realizing some compact zoom lenses by using plastic lens elements. Nowadays, plastic lens elements produced by injection molding are widely used in zoom lenses for digital cameras because of their suitability for volume production and ease of forming aspherical surfaces. Although using plastic lens elements in digital camera zoom lenses has its advantages mentioned above, there are some difficulties to be overcome for using plastic lens elements, such as an elevated sensitivity to the temperature change and the non existence of high-refraction materials. In this paper, we show some examples of commercialized digital camera zoom lens optical designs employing plastic lens elements such as a) retractable 3x zoom lens for digital still cameras and, b) 3x zoom lens using a right angle prism for digital still cameras and c) 25x zoom lens for digital camcorders in which benefits of plastic lens elements are effectively exploited and drawbacks of the material are well overcome.
Novel compact photonic band‐gap structures using rectangular increasing‐distance spiral slots

A novel, compact, rectangular increasing‐distance spiral‐slot (RIDSS) structure is proposed for photonic band‐gap (PBG) applications. The dimension of the RIDSS structure is only about 1/8λ at the cutoff frequency. Only three cells of the RIDSS‐PBG are sufficient for the measured beyond the 20‐dB stopband from 1470 to 2034 MHz, thus rendering the whole structure super‐compact. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 43: 144–146, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20402
Fast line-based experiment timing system for LabVIEW

We have developed a line-based computer control system that is embedded within the commercially available program LabVIEW. The program translates a sequence of C++ commands into an array of values for the programming of hardware devices, including digital and analog I/O boards and a GPIB controller. These commands are executed with 1 μs resolution upon receipt of an external triggering signal. We have successfully applied this system to the generation of Bose–Einstein condensates in a dilute gas of 87Rb.
Experiment and numerical simulation of centrifugal pump with different wrap angle

Centrifugal impellers C1,C2 and C3 are designed by using of three-order blade profile with the same basic geometry, such as radius,blade width and angle in the inlet and outlet,the number of the blades,and the designed rotating speed is also the same.The wrap angle of C1,C2 and C3 is 59°,75°and 91°respectively.The profile of impeller C1 is very close to the ones of traditional single-arc.The test results indicate that the best efficiency of C2 is 1.28%,1.43% higher than C1 and C3 re- spectively.By numerical simulation at the designed flow rate, the distribution of the relative velocity and load in the impeller is obtained.In the impeller C1 there is recirculation flow and load distribution in different passage is different.The study indicates that there is a best wrap angle and the single-arc is not the best blade profile.
A structured matrix method for determining the phase impedances of 3-phase, 3-dimensional bus layouts

The problem of efficiently formulating and computing the phase impedances of 3-phase, 3-dimensional bus structures is considered. The coupled circuit method, previously used for 2- D eddy current problems in which the circuit elements were simply connected, is extended to the case where the elements, all of which are inductively coupled, can have an arbitrary series/parallel connection. Particular attention is given to the terminal constraints imposed by a 3-phase supply. The development of the system equations is detailed. The method is particularly attractive for use in CAE/CAD applications.
THE EFFECT OF HACCP SYSTEM ON VARIOUS MICROBIOLOGICAL HAZARDS IN CHEESE FACTORIES

Due to the large number of complaints from some cheese producers in the El-Beheira Governorate, Egypt about the existence of problems in their cheese products, it was important to identify the causes of these problems and to provide recommendations and practical solutions. The Hazard Analysis and Critical Control Points (HACCP) system is a plant-specific and product-specific quality system that is one of the most significant systems in quality assurance and food safety programs. As a result, the application of the HACCP system plan in a small-scale cheese plant producing fresh damietta and ras cheese was investigated in order to determine the effect of the HACCP system application on microbiological hazards by determining the bacterial load of Critical Control Points (CCPs). The obtained results revealed that raw milk and equipment swabs were the most dangerous sources of contamination with different microorganisms. In addition, that the diversity of microorganisms and their counts in some raw materials, food handlers and food contact surfaces, besides, the processing conditions have an impact on the quality and safety of the product. The most prevalent fungal isolates from production line of both cheese factories were Rhodotorula followed by Candida spp, regarding to mould species penicillium and Asp. niger were the most prevalent mould species. Therefore, all instructions for implementing the HACCP system were prepared, including a flow diagram of processing processes, identifying risks, regulating at different CCPs by monitoring and corrective actions, confirming the HACCP plan, and keeping records.
Actuation of Adaptive Rearview System for Motorcycles

Conventionally, a motorcycle has headlight and mirrors to provide front illumination and rear views for drivers, respectively. Rearview mirrors on conventional motorcycles are fixed, which is easy to cause instant rear blind area for drivers on turns or hubbly roads. Therefore, the drivers cannot get traffic information behind motorcycles, and easily lead to traffic accidents. In this paper, actuation for an adaptive rearview mirror system for motorcycles was proposed. According to sensor inputs, this system adaptively adjusts the rearview mirrors to compensate the changes of vehicle dynamics in pitching, steering and rolling under different road conditions. A grey predictor was also developed in this paper to estimate the change of vehicle dynamics in advance. With the properly designed actuation, this system can provide wide and appropriate rear views to motorcycle riders. It significantly enhances riders’ safety and reduces the occurrence of traffic accidence.
Completing the Circle of Professional Development through Leadership and Mentoring

Leadership and mentoring are both lifelong activities. An essential part of being a leader is to serve as a mentor to young professionals. In this paper I explore the connection between leadership and mentoring, and offer suggestions for becoming a mentor. I discuss how leadership through mentoring makes for more capable engineers and a stronger engineering profession.
Novel zero-voltage-transition PWM converters

A class of zero voltage transition (ZVT) power converters is proposed in which both the transistor and the rectifier operate with zero voltage switching and are subjected to minimum voltage and current stresses. The boost ZVT-PWM converter is used as an example to illustrate the operation of these converters. A 300 kHz, 600 W ZVT-PWM boost, DC-DC converter, and a 100 kHz, 600 W power factor correction circuit using the ZVT-PWM technique and an insulated gate bipolar transistor (IGBT) device were breadboarded to show the operation of the proposed converters. It is shown that the circuit technology greatly improves the converter performance in terms of efficiency, switching noise, and circuit reliability. <<ETX>>
FPGA-based Implementation and Evaluation of Realtime OFDM Phase Compensation in 5G

In the New Radio (NR) standard which is standardized by 3GPP as a candidate for 5G mobile communication system, Orthogonal Frequency Division Multiplexing (OFDM) has been selected as the waveform for the air interface. Unlike the 4G Long Term Evolution (LTE), where the carrier frequency between the transmitter and receiver are always at the same locations, in NR, they can be at different frequencies. In such case, this leads to the phase ramped up at the receiver which cannot be recovered if the OFDM symbol is not equipped with reference signal for channel estimation and equalization. In this paper, we present our model for this issue and how to eliminate it by compensating the phase difference at both transmitter and receiver. We also implement this approach in Field Programmable Gate Array (FPGA) and validate it in real hardware testbed. The result show that with phase compensation, the received signal constellation is significantly improved.
Comparison of General and Spinal Anaesthesia on Systemic Inflammatory Response in Patients Undergoing Total Knee Arthroplasty: A Propensity Score Matching Analysis

Background and Objectives: Some of the postoperative complications following orthopaedic surgeries are associated with a systemic inflammatory response (SIR), which varies depending on the anaesthetic technique. We aimed to compare the effects of general and spinal anaesthesia on the SIR after total knee arthroplasty (TKA), based on C-reactive protein (CRP) levels, the platelet-lymphocyte ratio (PLR), and the neutrophil-lymphocyte ratio (NLR). Materials and Methods: Patients who underwent TKA between January 2014 and December 2018 were included. Electronic medical records of the patients were retrospectively reviewed and analysed. To reduce the impact of potential confounding factors, we performed propensity score matching according to the anaesthetic technique. Results: A total of 1311 TKA cases were analysed. After propensity score matching, the maximal CRP value and changes in CRP levels in the general anaesthesia group were higher than those in the spinal anaesthesia group. However, the maximal NLR and PLR and the changes in NLR and PLR were not different between the two groups. There were no differences in postoperative clinical outcomes. Conclusion: Spinal anaesthesia tended to induce a lower inflammatory response than general anaesthesia when considering CRP levels in patients undergoing TKA. However, the effects of anaesthetic techniques on the overall outcomes were not significant.
Operation of a passive optical network with subcarrier multiplexing in the presence of optical beat interference

When two lasers carrying subcarrier-multiplexed data operate with very closely spaced wavelengths, beating between the lasers can occur which increases the noise at the detector. This effect, optical beat interference (OBI), can greatly interfere with the operation of these systems. The authors have observed OBI with DFB lasers in a system carrying two 155.5-Mb/s data streams. With an optical modulation index of m=0.8, a bit-error rate floor of approximately 10/sup -2/ was observed due to OBI, which is consistent with the noise measured by an RF power meter. When m is increased to 1.8, a significant reduction in OBI was observed, and it was possible to achieve transmission at the 10/sup -9/ level with a penalty of only 1.8 dB due to the presence of OBI. >
Weighted Gene Co-expression Network Analysis Reveals ALDH1B1 As a Prognositc Biomarker Involved in Gastric Cancer Development

BackgroundGastric cancer (GC) is one of the leading cancers associated with high mortality and poor prognosis mainly due to its relatively late diagnosis and the limited therapeutic options. Consequently, screening for prognostic GC biomarkers and novel molecular therapeutic targets is necessary to promote patient outcomes. Methods Weighted gene co-expression network analysis (WGCNA), a systems biology approach, was applied to analyze the mRNA sequencing data and clinical information of GC patients obtained from The Cancer Genome Atlas (TCGA). Gene modules and clinical traits were constructed according to the Pearson correlation analysis, and the gene ontology (GO) and functional enrichment analysis of meaningful modules were carried out. Hub genes from meaningful modules were screened out by two approaches: the intra-modular and protein-protein interaction (PPI) analysis methods. Next, through upstream regulatory analysis, hub genes with high connectivity degree were further validated with differential expression analysis, Kaplan-Meier survival analysis, and the Cox regression model. ResultsWe found that seven modules were associated with the following clinical traits: anatomical location of gastric adenocarcinoma, histological type, histological grade, and pathological stage. The hub gene ALDH1B1 was found to have potential as a biomarker for gastric cancer cells, the relationship between this hub gene and gastric cancer drug treatment is also worthy of attention.Conclusion These findings may contribute to understanding the GC tumourigenic mechanisms, as well as provide new potential prognostic factors and molecular therapeutic targets for GC. The ALDH1B1 hub gene also provides a new vantage point for further clinical experiments and large-scale cohort studies to validate its association with GC patient survival, and provide a new direction for the research of gastric cancer drug treatment.
The Influence of the Coastal Plain Sedimentary Wedge on Strong Ground Motions from the 1886 Charleston, South Carolina, Earthquake

The effect of Atlantic Coastal Plain sediments on ground motion from the 1886 Charleston, South Carolina, earthquake was studied using linear regression analysis and ground motion modeling. Statistical tests applied to 264 Modified Mercalli intensity reports at epicentral distances less than 400 km showed that intensities within the Lower Coastal Plain (near the coast) averaged from 0.5 to 1.0 units less than intensities within other areas over comparable distances. Simulated ground acceleration time histories were generated along two profiles: one trending northeast from the epicenter along the coast and another trending northwest toward the Fall Line. The modeling results (which assume linear behavior) indicate that the thick coastal sediments attenuate high frequency motions (>3-10 Hz), while amplifying lower frequency motions. In contrast, locations on thinner sediments to the northwest experience amplification of high frequency motions. The overall effect is that peak acceleration decays more slowly with distance in the thinning sediments to the northwest of the epicenter than in the thick sediments along the coast.
Effect of UV-C Stress on Total Phenolics, Total Flavonoids and Khellin Contents in Ammi visnaga (L.) Lam. Fruits

Ammi visnaga fruits (L.) Lam. , is widely used for its antispasmodic and vasodilating effects. These effects are attributed to its main content of khellin. In our research, we studied the effect of UV-C stress on the metabolite production of the fruits. Fruits were subjected to UV-C treatment for ½, 1, 2, 3, 4 and 5 hr The change in the metabolic profile was studied by the quantification of total phenolics, total flavonoids and khellin in the methanolic extracts of the fruits applied to stress and extracts of control fruits. Total phenolics and total flavonoids were quantified colorimetrically using appropriate reagent for each. Folin-Ciocalteau reagent was applied for the quantification of total phenolics while 2% AlCl 3 solution was applied for the quantification of flavonoids. On the other hand, khellin was quantified by HPLC analysis. Our results showed that the concentrations of total phenolics, total flavonoids and khellin contents of the fruit extracts are significantly increased by exposing the fruits to UV-C stress with maximum production at 1 and 2 hr.
3D Face Recognition with Occlusions Using Fisher Faces Projection

In recent years, the 3-D face has become biometric modal, for security applications. Dealing with occlusions covering the facial surface is difficult to handle. Occlusion means blocking of face images by objects such as sun glasses, kerchiefs, hands, hair and so on. Occlusions are occurred by facial expressions, poses also. Basically consider two things: i) Occlusion handling for surface registration and ii). Missing data handling for classification. For registration to use an adaptively-selected-model based registration scheme is used. After registering occlusions are detected and removed. In order to handle the missing data we use a masking strategy call masked projection technique called Fisher faces Projection. Registration based on the adaptively selected model together with the masked analysis offer an occlusion robust face recognition system.
New Stage-Discharge Relationship for Weirs of Finite Crest Length

AbstractThe flow process of weirs of finite crest length is analyzed on the basis of the dimensional analysis and incomplete self-similarity theory. The crest length is incorporated in the functional stage-discharge relationship for weirs of finite crest length. The theoretically deduced stage-discharge formula was then calibrated using the experimental data compiled in this research. According to the current experimental data it is also concluded that the performance of the proposed stage-discharge formula is better than the previous dimensional stage-discharge formulae. Also, the proposed stage-discharge formula is applicable for all types of the weirs, i.e., long-crested, broad-crested, short-crested, and sharp-crested ones.
Between the interaction of Graph Neural Networks and Semantic Web

Relational data containing relationships and entities are all over the Web, and one of the main goals of the Semantic Web [1] has been to exploit the web more intelligently by creating associations. This relationships can be represented as graphs. More recently, Graph Neural Networks (GNN) have emerged and have shown promising results in graph data, being used in different tasks such as node classification, link prediction, community detection or network similarity. As a result of this, many new GNN architectures have been proposed (to name a few [2, 3, 4, 5, 6, 7]). We believe that the interaction of these two fields can play an important role in the advancement of both fields.
Direct Torque Control

In this paper, a modified K influence of the magnetic saturation the direct torque control (DTC) is elaborated; controller, the flux and the torque are estimated from The last part of this work is devoted to the operating system without mechanical a KALMAN filter as a speed observer. Simulation results are presented effectiveness of the proposed approach.
Sequential Kinking and Flared Energy-Absorbing End Terminals for Midwest Guardrail System

The Midwest guardrail system (MGS), developed at the Midwest Roadside Safety Facility, was designed to improve the performance of traditional strong-post, W-beam guardrail systems. These improvements include decreasing the potential for rollover with high center-of-gravity vehicles, decreasing the potential for rail rupture at the splice locations, and decreasing the sensitivity of the system to the installation rail height. However, safe guardrail termination options for the MGS must be developed before the system can be implemented on the roadside. Two end terminal designs, the sequential kinking terminal (SKT) and the flared energy-absorbing terminal (FLEAT), were partially redesigned and crash tested in conjunction with the MGS according to NCHRP Report 350 criteria. The new versions of the terminals were named the SKT-MGS and the FLEAT-MGS to designate them for use with the MGS. To evaluate the performance of the terminals with the MGS, a series of four full-scale crash tests was conducted: two redirection tests, NCHRP Report 350 Test Designations 3–34 and 3–35, and two head-on impacts, Test Designations 3–30 and 3–31. The results from the four crash tests were found to meet all relevant safety requirements. The SKT-MGS and FLEAT-MGS end terminals are the first successfully tested end terminals for use with the MGS.
Self-Supervision for Video Identification of Individual Holstein-Friesian Cattle: The Cows2021 Dataset

In this paper we publish the largest identity-annotated Holstein-Friesian cattle dataset ( Cows2021 ) and a ﬁrst self-supervision framework for video identiﬁcation of individual animals. The dataset contains 10 , 402 RGB images with labels for localisation and identity as well as 301 videos from the same herd. The data shows top-down in-barn imagery, which captures the breed’s individually distinctive black and white coat pattern. Motivated by the labelling burden involved in constructing visual cattle identiﬁcation systems, we propose exploiting the temporal coat pattern appearance across videos as a self-supervision signal for animal identity learning. Using an individual-agnostic cattle detector that yields oriented bounding-boxes, rotation-normalised tracklets of individuals are formed via tracking-by-detection and enriched via augmentations. This produces a ‘positive’ sample set per tracklet, which is paired against a ‘negative’ set sampled from random cattle of other videos. Frame-triplet contrastive learning is then employed to construct a metric latent space. The ﬁtting of a Gaussian Mixture Model to this space yields a cattle identity classiﬁer. Results show an accuracy of Top-1: 57 . 0% and Top-4: 76 . 9% and an Adjusted Rand Index: 0 . 53 compared to the ground truth. Whilst supervised training surpasses this benchmark by a large margin, we conclude that self-supervision can nevertheless play a highly effective role in speeding up labelling efforts when initially constructing supervision information. We provide all data and full source code alongside an analysis and evaluation of the system.
Modeling of Graphene Based Enzyme Field Effect Transistor with Ppy/K/CNT as Sensing Layer for Cholesterol Detection

--------------------------------------------------------------------------------------------------------------------------------------Submitted: 01-10-2021 Revised: 10-10-2021 Accepted: 12-10-2021 --------------------------------------------------------------------------------------------------------------------------------------ABSTRACT: A physical model for graphene based enzyme field effect transistor (G-ENFET) for cholesterol detection has been developed. The device replaces silicon substrate with p-type graphene substrate and uses heavily doped n-type graphene for source and drain regions. ZrO2 having high dielectric constant is used as gate insulator and the sensing membrane for the substrate (cholesterol) on which the enzyme cholesterol oxidase (ChOx) is immobilized is made up of a composite of potassium doped carbon nanotube with polypyrrole (PPy/K/CNT). The modeling of the device has been done by considering various potentials in the device from which a set of equations are derived that characterize the electrolyte enzyme insulator semiconductor (EEIS) structure. The output is measured in terms of drain current variations at different cholesterol concentrations. A comparison between the experimental results of the fabricated device with the modeling results gives a good fit.
Linguistics of Russian Media During the 2016 US Election: A Corpus-Based Study

Linguistics of Russian Media During the 2016 US Election: A Corpus-Based Study Devon K. Terry Department of Linguistics, BYU Master of Arts The purpose of this study is to perform a linguistic analysis of Russian mass media focused on its coverage of the 2016 US presidential election. More specifically, it will be a corpus-based study, using the corpus as a foundational source for quantitative and qualitative data. This study will use a collection of keywords from the corpus and analyze their contexts as they pertain to the two primary candidates, Hillary Clinton and Donald Trump. This study uses corpus linguistic research tools such as sentence tokenization,