Miracle-dz/UniFAR-FTUs huggingface dataset:
VDIBA-based sinusoidal quadrature oscillator

An electronically tunable voltage-mode sinusoidal quadrature oscillator circuit, which is based on using the recently introduced active building block, namely voltage differencing inverting voltage buffered amplifier (VDIBA) has been presented. The presented quadrature oscillator uses two VDIBAs, one electronic grounded resistor, and two grounded passive capacitors, suitable for MOS-C realization. The circuit performs an single-element-controlled oscillator and provides the advantage features of independent electronic control of oscillation condition and oscillation frequency. The workability of the proposed circuit has been verified using PSPICE simulations based on VDIBA implemented in TSMC 0.25-m CMOS technology, and the simulated results demonstrate a sufficient agreement with the theoretical conclusions. Streszczenie. Zaprezentowano elektronicznie strojony sinusoidalny kwadraturowy generator wykorzystujący voltage differenting inverting buffered amplifier VDIBA.Generator wykorzystuje dwa układy VDIBA, jeden uziemiony rezystor i dwa uziemione kondensatory. Sinusoidalny kwadraturowy generator wykorzystujący układy VDIBA
PRIVATOPIA: HOMEOWNER ASSOCIATIONS AND THE RISE OF RESIDENTIAL PRIVATE GOVERNMENT

ore, but there are others well worth mining. For example, women do not feature much in his narrative. It might have been better if he left them out completely as his analysis of the feminine side of landscape is worn out and riddled with arcane clichfis of mother earth’s dark vaginal caves and fecund fields. That landscapes have gender is a perspective worth pursuing; however, Schama’s emphasis is towards masculine conceptions and interactions with landscape. The book might have been more compelling had he offered careful discussion of women and the femininity of place. As it stands women play silent partners to men in building culture and remembering it in the land. In Water, he offers the worn out metaphor of a dark wet crevice in the earth as vagina. My response is one of ennui, tiring of yet another scholarly glance up a woman’s skirt as a token nod to understanding the mysteries of female sexuality and its relation to landscape. More often than not it is a thinly veiled need to flash a woman’s genitalia in a dark room full of scholars (keeping in mind this book originates from a series of lectures) in an effort to seem progressive or risqufi. Another annoying interpretation of women is in attributing their assertiveness to androgyny or some desire on their part to be like men. Can’t a woman climb a mountain without, as Schama puts it, "acting out her quasimasculinity" (p. 495)? Does Schama need to point out what Henriette d’Angeville wore when she climbed Mont Blanc in 1838? Reference to her attire seems to be presented as evidence of her validity as a woman. As though to say she did a manly thing, but because she dressed so prettily her femininity remained intact. What a relief. If Schama wants to offer a new way of looking that derails the fast track to the future bereft of "myth, metaphor, and allegory, where measurement, not memory, is the absolute arbiter of value" (p. 14), then he might have shown where these interpretive lenses of culture exist in the machine age. The deeply embedded bonds of nature and culture through myth and symbol emerge even in modern societies. He brings his readers to the gates of modernity after a long, sometimes fascinating, always well-documented, but painfully laborious journey. I’m glad to have read the book, but am not convinced Schama has offered a new way of looking at landscape. What he illuminates well and often are the rich and diverse reasons for looking at landscape--seeing landscape as auger for cultural meaning that nourishes humanity’s raison d’etre. However, that he succeeds in his claim to stick to Thoreau’s aversion to the esoteric is debatable. Perhaps one person’s concrete is another’s quicksand, but his references seem only accessible to readers familiar with European and American history of the arts and letters and may be esoteric to many. Near the book’s close, he emphasizes that the local, the nearby, holds the key to landscape memory, as though it was to these places he took his now well-traveled reader:
Private Online Workspaces for Doctoral Learners - Enhanced Communication and Reduced Isolation

This quantitative exploratory study, a continuation of the university’s four year research initiative that addresses the high national rate of doctoral student attrition, investigates whether a private online workspace for doctoral students and their dissertation committee will enhance communication and reduce learner’s feelings of isolation during the dissertation phase. Private doctoral workspaces provide a virtual platform for learner and committee collaboration, manuscript review, and milestone planning. The purpose of this study is to offer preliminary feedback to guide in the further development of the virtual workspace. To assess effectiveness of the private doctoral workspace, a seven question online survey was created to address usage, communication, and isolation. Two surveys were distributed to 803 doctoral candidates at a private southwestern university in the United States, resulting in 328 respondents for the first survey, and 190 respondents for the second survey. Doctoral learners completed the survey at the onset of the private doctoral workspace implementation, and again four months later. The results indicate that doctoral learners regularly access their private dissertation workspace, communicate more frequently with their dissertation committee, and have reduced feelings of isolation. These results may provide similar benefits to other academic groups working together on long-term projects in other disciplines.
Space-borne frequency comb metrology

Precision time references in space are of major importance to satellite-based fundamental science, global satellite navigation, earth observation, and satellite formation flying. Here we report on the operation of a compact, rugged, and automated optical frequency comb setup on a sounding rocket in space under microgravity. The experiment compared two clocks, one based on the optical D2 transition in Rb, and another on hyperfine splitting in Cs. This represents the first frequency comb based optical clock operation in space, which is an important milestone for future satellite-based precision metrology. Based on the approach demonstrated here, future space-based precision metrology can be improved by orders of magnitude when referencing to state-of-the-art optical clock transitions.
Defining Event Marketing as Engagement-Driven Marketing Communication

Event marketing has been one of the popular corporate marketing strategies for decades. The method is experiential and aims to transform not only attendees' perceptions but also their behavior. Despite this, several events have failed to build loyalty or the purchase intention beyond the entertainment value. In addition, event marketing now focuses on gaining purchase and visit intentions. When a company focuses on engagement, it causes an increased usage desire and longer customer lifetime value. However, as a consequence of such communications, research into the engagement effect of an event has been lacking. This study clarifies the literature review to better understand it. This study reviews 40 relevant scholarly publications from the Scopus database to build a novel concept of engagement-driven event marketing. This article narrows the search using event marketing characteristics. Previous research has found six event types: sports, festivals, concerts, special events, trade shows, and meetings. Five factors influence the attendees: purchase intention, visit intentions, word-of-mouth, brand loyalty, and brand equity . This paper presents a new event marketing model based on Nufer (2015) and Żyminkowska (2019). Attendee engagement is defined by the relationship among the event’s content, the event’s involvement, the event-brand image congruency, and the attendee’s experience of the event’s content. There are also suggested theoretical and managerial considerations.
Chemical and sensory quality of sheep liver pâté prepared with 'variety meat' Qualidade química e sensorial de patê de fígado ovino elaborado com subprodutos comestíveis

Many edible meat by-products produced from sheep slaughter are often wasted but represent excellent sources of many nutrients. The preparation of pâte may be an alternative use for this raw material and may contribute to the development of a sheep sector by offering new products to the consumer market. The objective of this work was to produce and evaluate the quality of sheep pâte made with blood, liver and trimmed meat. The pâte formulation was composed of 12% meat, 25% liver, 13% blood, 20% water and 30% fat, as well as spices and seasoning. The product had high iron content (9.0 mg/100 g). The measured levels of essential amino acids exceeded the recommended values for adults. The sheep liver pâte showed a significant percentage of linoleic acid (16.68%), which is essential to the human body. The pâte produced was in accordance with the requirements of the Brazilian legislation regarding chemical and microbiological parameters, able to be edible, and showed good sensory acceptance. This study suggests that the development of sheep liver pâte is a viable alternative to add value to edible sheep slaughter by-products by generating a product with high nutritional value.
Toward a Better Understanding of Memorable Souvenir Shopping Experiences

ABSTRACT This study investigates the influence of objective authenticity, substantive staging of servicescapes, experience co-creation, involvement and shopping satisfaction on the memorability of souvenir shopping experiences. The study also examines the relationship between a memorable souvenir shopping experience, nostalgia, destination attachment and revisit intention. Data were collected from 304 tourists who had taken a vacation in the preceding year and bought souvenirs during their trip. The results showed that experience co-creation, involvement and shopping satisfaction had positive effects on the memorability of souvenir shopping experiences. Relationships between memorable souvenir shopping experiences and nostalgia, destination attachment and revisit intention were also supported.
Reactive Power Injection Capability of Buck–Boost Inverter With Unfolding Circuit

New emerging power inverter topologies are aiming at high-power density and efficiency with reliable performance. The recently proposed family of single-phase single-stage buck–boost inverters with output unfolding circuits have promising features for application in different fields. Nevertheless, the incapacity of injecting reactive power by the classical unfolding inverters has been assumed as its main drawback. Thus, our focus is on the reactive power injection capability of the single-stage buck–boost inverters with unfolding circuits. This attribute enables the converter to provide some extra ancillary services for friendly integration of the renewable energy resources and energy storage systems, providing support to the smart grid/microgrid, thus contributing to its power quality welfare. By means of a comprehensive analysis and implementation of proper closed-loop model predictive control, together with an adequate selection of the output capacitor, the single-inductor unfolding buck–boost inverter is capable of delivering reactive power to the utility grid. We used the simulation and experimental tests to validate the theoretical aspects.
Research Progress of Safety of Zearalenone: A Review

Zearalenone, a mycotoxin produced by fungi of the genus Fusarium, widely exists in animal feed and human food. The structure of zearalenone is similar to estrogen, so it mainly has estrogenic effects on various organisms. Products contaminated with zearalenone can pose risks to animals and humans. Therefore, it is imperative to carry out toxicological research on zearalenone and evaluate its risk to human health. This paper briefly introduces the production, physical, and chemical properties of zearalenone and the research progress of its toxicity kinetics, focusing on its genetic toxicity, reproductive toxicity, hepatotoxicity, immunotoxicity, carcinogenicity, endocrine interference, and its impact on intestinal health. Finally, the progress of the risk assessment of human exposure is summarized to provide a reference for the follow-up study of zearalenone.
AN ARTIFICIAL INTELLIGENCE-BASED SOLUTION FOR THE CLASSIFICATION OF OAK DECLINE POTENTIAL

Abstract. Oak decline is a complex phenomenon. The classification of oak decline potential could be a valuable tool for forest management. This paper identified seven factors that influence oak decline: height, slope, aspect, temperature, perception, soil type, and aerosol. Then, factor analysis is used to determine factors that should be included in oak decline potential classification and reduce data complexity.As a result, five components explaining 92.49% of total variance are selected. The first component explains 40.34% of the variance, and three factors, including perception with positive and temperature and aerosol with negative load, have contributed to its construction. The second component is composed of a positive load of aspect, and soil type explains 14.89% of the variance. By explaining 14.10% of the variance, the third component consists of soil type and aspect with positive and negative loads, respectively. Slop and height have a positive load in constructing the fourth and fifth components.Five extracted components are used as input sets of PNN, MLC and SVM methods. 80% of samples are used for training methods, and 20% are used for testing purposes. Results are compared based on the overall accuracy of the methods.These components are used as an input set of three classification methods, including Probabilistic Neural Network (PNN), Maximum Likelihood Classification (MLC) and a Support Vector Machine (SVM). Based on the results, the SVM, with an overall accuracy of 0.87%, has proved its capability in oak decline potential classification.
Potential impact of future climate change on spatial variability of blackgram yield over Tamil Nadu

Climate change is no longer a distinct prognosis but become a reality and also proved to have its impacts on crop production. Blackgram, a C3 short duration pulse crop was considered for this study to clarify the controversial statements on adaptability of this crop for changing climate. Dynamically downscaled data (CCSM4 data using REGCM4.4 model) for 1971 to 2099 (RCP 4.5 scenario) was used for the study. The popular cultivars CO6 and VBN6 of Blackgram are employed for the study after calibration and validation of DSSAT model. The impact assessment was carried out with August 1st as sowing date. The yield of Blackgram was found to have beneficial stimulus towards the changing climate under enriched CO2. Considering cultivars, difference was noticed spatially and temporally. The average yield of VBN6 was less than CO6 during base and near century, but it got reverse with time.
Studying the Effect of ZrO2 Addition on Hydroxyapatite via Ball Milling Technique

The bio-composited ceramic stabilized zirconia-hydroxyapatite had been formed by ball milling method. The hydroxyapatite was synthesized from chicken eggshell via chemical precipitation. And it was mixed with stabilized zirconia powder together. All of the samples had been investigated by XRD, FTIR and UTM tester. The XRD and FTIR result showed that the stabilized zirconia-hydroxyapatite sample powder after ball mill was found only hydroxyapatite and zirconia phase without addition of other phase. High crystallinity of hydroxyapatite can be found after heat treatment and calcium zirconium oxide was formed around 1300 °C. In addition, the compressive strength increased with increasing the zirconia content shown by UTM tester.
Impact of single parenting on the development of young adults: a comparative study of intact and non-intact families in Lahore, Pakistan

The study sought to investigate whether the social development of the young adults (in the form of resilience) is more closely related to single parents or the upbringing of both parents and how the nonappearance of 1 of the 2 parentages can affect these imperative aspects. Young adults from sole mother or father and intact households, both 320 boys and girls, 160 young adults from broken setups, and 160 young adults from happy families were selected through a convenient sampling technique from different educational institutes. This study adopted the quantitative research design and method of the survey to gather information. The structured Resilience Scale (RS) was used to gather data. A noteworthy variance was seen in young adults ‘resilience with single and both parents. There was a significant difference found between age, and resilience and even between education and resilience. There was no important change visible in the order of birth between young adults with both parents, and single parents. The results have a major impact on clinicians and educators working with families who are concerned with nurturing positive, emotionally close-step relationships as well as maintaining sturdy matrimonial ties and beliefs among spouses in marriages.
High‐isolated broadband eight‐element linear multi‐input multi‐output array over artificial magnetic surface for wireless and sub‐6 GHz 5G communications

A low‐profile eight‐element printed dipole antenna (PDA) array backed by broadband rhomboid artificial magnetic conductor (AMC) is introduced for wireless communication systems. By loading a 4 × 27 AMC reflector into the eight‐element array of PDA, a low‐profile wideband structure with enhanced radiation properties is achieved. The measured S parameters show the broad bandwidth from 4.75 to 7.05 GHz in C‐band with enhanced gains of eight elements (more than 8 dBi) and the suitable isolation between the array elements of more than 23 dB for multi‐input multi‐output (MIMO) systems. The suggested PDA with a pair of the microstrip meandered folded poles excited by an E‐shaped microstrip feedline expands the bandwidth in the range of 5.85–6.95 GHz (S11 ≤ −10 dB). The novel AMC unit cell is realized based on the recognized method as rhomboid coupled parasitic patches. The rhomboid AMC design operates at 6.26 GHz with an AMC bandwidth of 5.20–7.24 GHz (32.8%). Then, the suggested rhomboid AMC surface as a reflector of the antenna is inserted into the PDA to exhibit −10 dB measured impedance bandwidth from 4.94 to 6.93 GHz (more than 33%) for wireless local area network (WLAN) and worldwide interoperability for microwave access (WiMAX) applications. The suggested PDA with AMC compared to the PDA without AMC exhibits a size reduction of 34%, enhanced gain up to 8 dBi, and excellent impedance matching (at least −20 dB) with directional radiation patterns.
Parenting style and depression among students: The mediating role of self-esteem

Parenting style has been highlighted as one of the causes of depressive symptoms and also influences adolescent self-esteem. Although many studies have investigated the effect of self-esteem on depression, few have considered its role as a mediator variable. Therefore, this study aims to analyze the direct effect of parenting style on adolescent depression and its indirect effect on self-esteem. An online survey was completed voluntarily by 555 respondents from four senior high schools in Bekasi, Indonesia. The Patient Health Questionnaire, Parental Authority Questionnaire, Rosenberg Self-esteem Scale, and Path-SPSS analysis were employed to prove the hypothesis. The results show a significant direct effect of parenting [authoritative (β = -.257, p .01), authoritarian (β = .181, p .01) and permissive (β = .109, p .01)] on depression. In addition, there is an indirect effect of authoritative (β = -.182, p .01) and authoritarian (β = .055, p .01) parenting styles on depression as mediated by self-esteem. The study indicates the importance of positive parenting and the building of adolescents' self-esteem to avoid the risk of depression.
“Fatores determinantes da evolução institucional e tecnológica do porto digital” / "Determining factors of the institutional and technological evolution of porto digital"

Porto Digital is defined as a Productive Arrangement of Information and Communication Technology that focuses on software development and is located in the city of Recife. This local innovation system arose from the demand of companies and the market, from the interest of revitalizing the center of the capital of Pernambuco. It is located in a strategic point in the city of Recife, in an integrated area where it hosts universities with human capital and research in the areas of vocation of the Port, close to the public authorities. The study shows the evolution of the local innovation system of the IT sector, from a set of
An 8-Gbps, Low-Jitter, Four-Channel Transmitter with a Fractional-Spaced Feed-Forward Equalizer

An 8 gigabits per second (Gbps), low-jitter, four-channel transmitter with fractional-spaced feed-forward equalizer (FFE) is designed to meet the demand for broad transmission bandwidth in serial data communications. A novel frequency divider chain (FDC) architecture is developed, to satisfy the time requirements for high-speed data serialization. Moreover, a reconfigurable output driver circuit is employed to ensure compatibility with different protocols. In addition, a three-tap fractional-spaced FFE, which can enhance signal bandwidth significantly, is proposed, to compensate for channel loss. The transmitter was simulated and validated based on the Semiconductor Manufacturing International Corporation (SMIC) 55-nm process. The post-layout simulation results show the following: The tuning range of the phase-locked loop (PLL) can cover 1.6 to 4.6 GHz. At an output frequency of 4 GHz, the root-mean-square jitter (RJ) of the PLL after integration from phase noise was 1.93 ps. With an 8 Gbps output data rate, using the pseudo-random binary sequence (PRBS)-31 as a data source to simulate the whole transmitter, the power consumption values of the PLL and drive circuit were 27.0 and 29.2 mW, respectively, and the eye width and the valid eye height of output data were 0.76 unit interval (UI) and 0.68.
Asteroseismology of the dip structure in period-spacings of rapidly rotating γ Doradus stars caused by the coupling between core and envelope oscillations

Recent asteroseismic observations by the Kepler space mission have revealed the dip fine structure in the period-spacing versus period diagram of rapidly rotating γ Doradus stars. Following the successful reproduction of the dip structure by numerical calculations in previous studies, we present in this paper the physical mechanism of how the dip is formed as a result of the interaction between the gravito-inertial waves in the radiative envelope and the pure inertial waves in the convective core. We analytically describe the wave solutions in both of the radiative envelope and the convective core, and match them at the interface to construct an eigenmode. We have found from the analysis the following points: the dip structure is mainly controlled by a parameter that has an inverse correlation with Brunt–Väisälä frequency at the interface; the depth and the width of the dip is shallower and larger, respectively, as the parameter gets large; the shape of the dip can be approximated by the Lorentzian function; the period at the central position of the dip is equal to or slightly smaller than that of the involved pure inertial mode in the convective core. We have also understood based on the evolutionary models of main-sequence stars that the parameter is inversely correlated with the chemical composition gradient at the convective-core boundary. The dip structure thus would provide information about the poorly-understood physical processes, such as diffusion, convective overshooting and rotational mixing, around the boundary between the convective core and the radiative envelope.