Miracle-dz/UniFAR-FTUs huggingface dataset:
Recovery of 40 GHz optical clock from 160 Gbit/s data using regeneratively modelocked semiconductor laser

A fast, compact optical clock recovery device that uses a regeneratively modelocked semiconductor laser had been developed, and a 40 GHz optical clock signal was successfully recovered from a 160 Gbit/s data stream. It was confirmed that the regeneration loop is effective in achieving stable operation with low timing jitter.
A programmable pipeline for multi-material fabrication

3D printing hardware is rapidly scaling up to output continuous mixtures of multiple materials at increasing resolution over ever larger print volumes. This poses an enormous computational challenge: large high-resolution prints comprise trillions of voxels and petabytes of data and simply modeling and describing the input with spatially-varying material mixtures at this scale is challenging. Existing 3D printing software is insufficient; in particular, most software is designed to support only a few million primitives, with discrete material choices per object. In this body of work I present OpenFab, a programmable pipeline for synthesizing multi-material 3D printed objects that is inspired by RenderMan and modern GPU pipelines. The pipeline supports procedural evaluation of geometric detail and material composition by using shader-like fablets. The pipeline allows models to be specified easily and efficiently. Additionally, I describe a streaming architecture for implementing OpenFab; only a small fraction of the final volume is stored in memory and output is fed to the printer with little startup delay. I demonstrate the OpenFab pipeline and programming model on a variety of multi-material objects.
Advanced self-commissioning and feed-forward compensation of inverter non-linearities

Accurate compensation of inverter non-linearities is highly desirable especially in high performance drives where a perfect correspondence between reference voltages and real output voltages is required. In this paper a self-commissioning procedure able to determine each contribute to the overall output voltage distortion and save it to a Look-Up Table (LUT) is described along with a detailed theoretical analysis of the different causes and effects of each non-linearity. The procedure is based on Sine-Triangle Pulse Width Modulation (ST-PWM), requires two additional relays and can be carried out autonomously by an inverter controller. A feed-forward compensation approach based on the extracted data is proposed for ST-PWM and for Space Vector Modulation (SVM) techniques. The feasibility and effectiveness of the proposed solution are demonstrated by experimental results.
A potential field based formation control methodology for robot swarms

A novel methodology is presented for organizing swarms of robots into a formation utilizing artificial potential fields generated from normal and sigmoid functions. These functions construct the surface which swarm members travel on, controlling the overall swarm geometry and the individual member spacing. Nonlinear limiting functions are defined to provide tighter swarm control by modifying and adjusting a set of control variables forcing the swarm to behave according to set constraints, formation and member spacing. The swarm function and limiting functions are combined to control swarm formation, orientation, and swarm movement as a whole. Parameters are chosen based on desired formation as well as user defined constraints. This approach compared to others, is simple, computationally efficient, scales well to different swarm sizes, to heterogeneous systems, and to both centralized and decentralized swarm models. Simulation results are presented for a swarm of four and ten particles following circle, ellipse and wedge formations. Experimental results are also included with a swarm of four unmanned ground vehicles (UGV) as well as UGV swarm and unmanned aerial vehicle (UAV) coordination.
video laparoscopic cholecystectomy the last diagnostic step or the first surgical procedure to prevent cancer a review of incidental gallbladder cancer

Aim: Incidental gallbladder cancer (GBC) is a more and more frequent medical entity discovered on the specimen after a cholecystectomy. The aim of our study is to value the importance of cholecystectomy as last diagnostic step or surgical procedure to prevent invasive gallbladder cancer. Histologicalroutinary examination of surgical specimen could discover a lot of hidden gallbladder cancer. Material and methods: We collected data on patients treated with video laparoscopic cholecystectomy (VLC) for lithiasis, from January 2000 to December 2015. We selected 477 patients, who underwent VLC after a preoperative gallstones positive US, and who had histologic analysis of gallbladder specimens. Our outcomes were retrospectively analyzed and compared to international results for a global review. Results: VLC has been realized in all patients with a rate of conversion of 5%. In 4 of these patients (0.9%) was incidentally discovered a GBC during pathological exam of specimens. All the samples showed adenocarcinoma-type lesions. Discussion: The incidental finding of gallbladder cancer during VLC is a quite rare event; incidence goes from 0.2 to 2.9% (0.9% in our personal experience). Good results in term of overall survival were obtained for pTis and pT1a, while higher stages are related to a poor prognosis, especially in elderly population (due to comorbidities and less therapeutic choices). Most severe stages are related to an extremely high mortality rate. Conclusions: VLC has an important role in diagnosing and treating gallbladder cancer. Lesions Tis and T1a can be efficiently treated with the only VLC approach, while more severe stages require further procedures. For this reason, we suggest the importance of a preventive cholecystectomy in high risk patients, followed by histological examination in selected cases.
Experience and effectiveness of application of transmission line arresters

Installation of transmission line arresters (line arresters) in Japan started in 1980. Since then line arresters have been applied in service for more than 20 years as effective countermeasures against lightning attack. This paper describes basic specifications of line arresters and effectiveness of application based on the latest datum.
A Novel Control Strategy of MPPT Taking Dynamics of Wind Turbine into Account

This paper presents a novel Maximum Power Point Tracking (MPPT) strategy in Wind Generator System (WGS) for the optimization of wind conversion efficiency in both steady and dynamic state. The strategy combines the idea of Power Signal Feedback (PSF) control and Input-Output Feedback Linearization method. As the results, the strategy can improve the dynamic response speed of WGS as well as the yield of wind energy in steady and dynamic state. Analysis and simulation results confirm the validity of the strategy.
Cost-Effective Coordinated Voltage Control in Active Distribution Networks With Photovoltaics and Mobile Energy Storage Systems

High penetration of intermittent renewable energy resources (RES) will impose great challenges on the conventional voltage control in distribution networks. This paper proposes a two-stage cost-effective coordinated voltage control strategy to mitigate fast voltage violations while minimizing the total voltage regulation cost. In the first stage, the optimal power flow (OPF) is performed to determine the day-ahead dispatch results of on-load tap changers (OLTC) and capacitor banks (CBs). The hourly charging schedule of mobile energy storage systems (MESS) is also obtained through a spatial-temporal decision model embedded in the optimization problem. In the second stage, the real-time voltage control strategy is implemented to regulate the power output of photovoltaics (PVs) and MESS with one minute resolution. A novel fine-tuning control method is proposed to adjust the power output, which can further reduce voltage regulation cost within a certain voltage dead band. To reserve more fast-response power resources for PVs and MESS, the voltage regulation cost curves are designed as a piecewise linear function with different per unit cost in each range. The proposed approach is tested on the IEEE 33-bus and 123-bus distribution systems and comparative simulation results show the enhanced control effect in mitigating voltage violations and saving costs.
The Pitching Edge

Nolan Ryan, Randy Johnson, Kevin Brown, and on and on. Tom House helped develop these athletes into the great pitchers they became-Hall of Famers and Cy Young award winners. Having spent 20 years in the Major Leagues as a pitcher and pitching coach, and more than that studying the science of pitching, House was well-prepared to unleash the maximum potential from his star pitcher pupils. Now, in the new edition of his highly acclaimed "The Pitching Edge," House accomplishes through a book what he has been doing directly for decades with pitching prodigies.To House, pitchers are products of four things-their genes, their degree of mastery of the pitching motion, their level of physical conditioning, and their mental toughness and skills. The first factor cannot be changed; the other three can, and they form the three parts of "The Pitching Edge. " Part I is the best, clearest, and most complete information on pitching mechanics ever presented in a book. Each phase of the pitching motion, from initial set up through the post-follow-through is explained in detail and demonstrated through computer-generated stick figures and accompanying full-body line drawings. Here, and throughout the book, the author offers special trouble-shooting advice for pitching problems in an element called House Calls. Physical conditioning specifically for pitchers is covered in Part II. Far beyond the standard training advice, this section of the book provides clear exercise and program prescriptions for taking care of the throwing arm, preparing between starts and relief appearances, and maintaining all off-season fitness gains throughout the long competitive season. Finally, in Part III House looks at the psychology of pitching. More than the standard goal setting and mental imagery mumbo-jumbo, this section mixes what House has found to be most effective in mental and emotional management on and off the playing field. Always focused on the practical, this part of the book includes many valuable lessons and tips for making winning strategic pitching decisions throughout the course of a game and season. As a bonus feature, House includes his new Athletic Determination Inventory, which measures pitchers' motivational drive and mental makeup. In all, House has masterfully combined the art and science of pitching into a very useful guide for players and coaches. This book truly is "The Pitching Edge. "
A new technique for efficient and accurate analysis of FSSs, EBGs and metamaterials

The article presents a numerically efficient and accurate technique for the analysis of doubly‐infinite periodic arrays, which find applications as frequency selective surfaces, electronic bandgap structures and metamaterials that often utilize periodic elements with fine features. The method derives its efficiency by projecting the solution to the infinite array problem from that of a corresponding truncated array of relatively small size, typically comprising of only four to six rings. Furthermore, it reduces the matrix size needed to solve for the induced current to only two or three. Another feature of the method is that it involves reciprocity principle to compute the reflection and transmission coefficients of the array, using a technique that avoids the need to integrate the currents induced on the unit cell via the periodic Green's function, as well as the evaluation of the latter integral in the far‐field. The results derived are compared with commercial software tools to assess the validity of the approach and to demonstrate the time advantage of the present scheme over the existing techniques. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1108–1116, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26730
Advanced 3D Localization in Lock-in Thermography Based on the Analysis of the TRTR (Time-Resolved Thermal Response) Received Upon Arbitrary Waveform Stimulation

Lock-in thermography (LIT) has been successfully applied in different excitation and analysis modes including classical LIT, analysis of the time-resolved temperature response (TRTR) upon square wave excitation and TRTR analysis in combination with arbitrary waveform stimulation. The results obtained by both classical square wave- and arbitrary waveform stimulation showed excellent agreement. Phase and amplitudes values extracted by classical LIT analysis and by Fourier analysis of the time resolved temperature response also coincided, as expected from the underlying system theory. In addition to a conceptual test vehicle represented by a point-shaped thermal source, two semiconductor packages with actual defects were studied and the obtained results are presented herein. The benefit of multi-parametric imaging for identification of a defect’s lateral position in the presence of multiple hot spots was also demonstrated. For axial localization, the phase shift values have been extracted as a function of frequency [4]. For comparative validation, LIT analyses were conducted in both square wave and arbitrary waveform excitation using custom designed and sample-specific stimulation signals. In both cases result verification was performed employing X-ray, scanning electron microscopy (SEM) and energy dispersive x-ray (EDX) as complementary techniques.
Improved Software Implementation for Montgomery Elliptic Curve Cryptosystem

: The last decade witnessed rapid increase in multimedia and other applications that require transmitting and protecting huge amount of data streams simultaneously. For such applications, a high-performance cryptosystem is compulsory to provide necessary security services. Elliptic curve cryptosystem (ECC) has been introduced as a considerable option. However, the usual sequential implementation of ECC and the standard elliptic curve (EC) form cannot achieve required performance level. Moreover, the widely used Hardware implementation of ECC is costly option and may be not affordable. This research aims to develop a high-performance parallel software implementation for ECC. To achieve this, many experiments were performed to examine several factors affecting ECC performance including the projective coordinates, the scalar multiplication algorithm, the elliptic curve (EC) form, and the parallel implementation. The ECC performance was analyzed using the different factors to tune-up them and select the best choices to increase the speed of the cryptosystem. Experimental results illustrated that parallel Montgomery ECC implementation using homogenous projection achieves the highest performance level, since it scored the shortest time delay for ECC computations. In addition, results showed that NAF algorithm consumes less time to perform encryption and scalar multiplication operations in comparison with Montgomery ladder and binary methods. Java multi-threading technique was adopted to implement ECC computations in parallel. The proposed multithreaded Montgomery ECC implementation significantly improves the performance level compared to previously presented parallel and sequential implementations. has lower computational complexity, and hence requires less field operations. This research studied the performance level of sequential and parallel implementation of Montgomery ECC. The parallel implementation was done using Java multithreading techniques. Three projective coordinates were implemented
Pengaruh strategi komunikasi media sosial instagram terhadap brand equity, brand attitude, dan purchase intention

The phenomenon of social media at this time raises a new trend in which companies or SMEs use social media both as a communication media and as a marketing media. Social media channels offer new ways for companies or SMEs with consumers to engage with each other. Various social media platforms have become a natural part of a company’s marketing communication strategy. One of them is Instagram. Instagram is one of the most popular social media in Indonesia. Instagram is a marketing tool in creating and increasing consumer awareness of a brand. Therefore, the purpose of this study was to know the influence of Instagram social media communication forms, namely firm-created content and user-generated content on brand equity, brand attitude and purchase intention on Instagram account followers of Madre (@madre_parka). The research was an explanatory study with a quantitative approach with survey method. Samples in this study were 208 respondents collected using the random sampling method with a purposive sampling technique with the follower category Instagram @ madre-parka account, ages 18-41 years and not a reseller from Madre. Using questionnaire as a main instrument in data collection using a Likert scale of 1-5 is made into the Google form. Analysis using Structural Equational Modeling with data analysis tools using AMOS. The results showed that firm-created content and user-generated content conducted by Madre had a positive and significant effect on brand equity and brand attitude, then brand equity and brand attitude had a positive and significant effect on purchase intention.
Implementation and Design of Voltage-Mode PFM Control Buck Power Converter

A lower power consumption, smaller output ripple and better regulation buck dcdc converter controlled by voltage feedback and pulse-frequency modulation (PFM) mode is implemented in this paper. The converter operating in discontinuous conduction mode (DCM) is designed and simulated using the TSMC 0. 18μm 1P6M CMOS Process. Hspice simulation results show that, the buck converter having chip size with power dissipation about 0.68mW. This chip can operate with input supply voltage from 1.2V to 1.8V, and switching frequency from 249KHz () to 50KHz (), and its output voltage can stable at 1.0V and less than 110mV ripple voltage at maximum loading current 100 mA.
Impact of realistic energy levels on the efficiency of intermediate Band Solar Cells: Impact of carrier loss

Intermediate Band Solar Cells (IBSCs) were proposed [1] as a variation of a compound III–V semiconductor pn junction solar cell [2] with a proposed efficiency of 63% with concentration of light [3]-making them the highest efficiency pn junction solar cell possible. A schematic energy band profile of a p-i-n junction IBSC is given in Fig. 1. There are several possible approaches to create the Intermediate Band (IB): high density quantum dots, of a smaller band gap material can be introduced into a larger bandgap semiconductor or high density impurity states can also be introduced into the semiconductor host material to create an IB. A detailed balance approach is used to calculate the efficiency for a specific energy band gap with an IB positioned at the ideal position within the bandgap as shown in Fig. 2. This approach produces the high efficiency of 63% for a bandgap of 1.95 eV with the IB positioned 0.71 eV above the Valence Band (VB) or below the Conduction Band (CB). Experimentally efficiencies of < 20% have been observed for such devices employing QD-based IBs.
Anticipating the Creditworthiness of an Organization using R

Numerous start-ups are being created day-by-day. Government also welcomes those by providing funds and loans. As India’s economy grows at tremendous pace there is a need for analytical models to help investors track down and predict the performance of industry. Thus, predictive models help us to find and make an informed decision about the financial markets in the future. It allows investors to predict the right shares to obtain profitable investments, banks to invest on repayable customers, mutual funds providers to predict the credit worthiness and shares in order to obtain accuracy about investments and outcomes etc. while there are many models that have been created and perfected by numerous banks and credit rating agencies with their own software tool and data analytics processing there are no such models and systems exists for common retail stock mutual fund investors. This paper mainly focuses on building an open source user friendly model that predict the future performance of concern industry based on the historical records of financial data that is available in BSE/NSE market for various stake holders by focusing on different performance parameters of the concerned company. This prediction is done using R. The Descriptive and predictive models have been created using the financial data collected for more than 3000 companies and tested on accuracy with various statistical methods like ROC.
Incidence of abnormalities in hatched day-old chicks of a commercial hatchery in Ogbomoso, Oyo-State, Southwest Nigeria

Apart from optimizing hatchability, an important aim of a hatchery operator is to deliver quality day-old chicks. This trial was conducted to assess egg fertility, hatchability and incidence of day-old chicks abnormalities in a commercial hatchery. A total of 183,019 fertile eggs were collected over a six-week period and incubated. From the resultant incubations, one hundred and seventeen thousand, one hundred and sixty eight (117168) hatched day-old chicks were examined and ranked (normal or abnormal) while deformed chicks were classified as Scattered legs, Impaired feathers, Head tumor, Extra legged chicks, Disoriented beaks, Unhealed navels, Eye issues and Runts. Data collected were analyzed using descriptive statistics. Results indicated that egg fertility and hatchability were 81.3 and 82.5% respectively at the hatchery. Abnormal chicks based on fertile eggs were 0.93%. Type of abnormality revealed higher incidence of scattered legs, runts, impaired feathers and unhealed navel which were 0.22%, 0.23%, 0.24% and 0.14%, respectively while disoriented beak, head tumour and eye issues were at a lower incidence of 0.03%, 0.05%, and 0.04% respectively. Occurrence of three or more legged chicks was 0.002%. In conclusion, chick abnormalities were at a low incidence indicating optimum hatchery and breeder stock management practices. However, there is a need for proper monitoring and evaluation of hatcheries based on actual saleable day-old chicks. Keywords : Day-old chicks; Fertility; Hatchability; Deformities; Incubation
Pengaruh Pemberian GA3 terhadap Perkecambahan Embrio Somatik Kakao

Germination process of somatic embryos is one of critical steps in somatic embryogenesis. The conversion of somatic embryos into plantlets is still low and adding kinetin, ABA, NAA, and GA3 to the germination medium of cacao somatic embryos may increase it. The study aimed to investigate the effect of GA3 on somatic embryo germination at the cotyledonary phase. The study was conducted in the Indonesian Industrial and Beverage Crops Research Institute (IIBCRI) Tissue Culture Laboratory from May to November 2017. The study used a factorial completely randomized design (CRD) with seven replications. The first factor was the cacao genotypes, namely SCA 6 and MCC 02, and the second factor was four concentrations of GA3, namely 0.0; 1.0; 3.0; and 5.0 mg/l. Characters observed were the percentage of shooting cotyledonary embryos, the percentage of rooting cotyledonary embryos, the percentage of shooting and rooting cotyledonary embryos, percentage of browning cotyledonary embryos, root length, shoot length, and hypocotyl length at one and two months old. The results showed no interaction between genotypes and GA3 concentrations on all observed characters. Adding GA3 at 1,0 mg/l concentration tends to increase the percentage of shooting cotyledonary embryos of SCA 6 and rooting cotyledonary embryos of MCC 02. SCA 6 clone has a higher percentage of shooting cotyledone, shooting and rooting cotyledone, and browning cotyledone compared to those of MCC 02.