Miracle-dz/UniFAR-FTUs huggingface dataset:
Concurrent Dual-band Doherty Power Amplifiers for Carrier Aggregation

Carrier aggregation is the main feature of the Long Term Evolution advanced (LTE-A) standard to increase the spectral efficiency and communication bandwidth. It calls for wireless transmitters to be multi-band and multi-standard to meet the demands of various deployment scenarios. In addition, these transmit radios must efficiently amplify signals characterized with a high peak-to-average power ratio (PAPR), which is caused by advanced modulation schemes. These two factors highlight the need for the multi-band Doherty power amplifier (DPA), which allows the transmitter remain in high efficiency at back-off power levels and maintain that high efficiency over multiple frequency bands. In this work, a novel output combining network is presented for the dual-band DPA design with extended fractional bandwidth for carrier aggregated signals. The proposed output combiner employs a modified Π-shape network, which enables the absorption of output capacitances from both the main and peaking devices and eliminates the need for phase offset lines which are major sources of bandwidth limitation in the existing multiband DPAs. In addition to performing the impedance inversion, the proposed combiner incorporates the biasing feeds and presents small low-frequency impedances to both the main and peaking transistors. The inclusion of the bias feeds and small low low-frequency impedance feature improves the linearizability of the DPA when stimulated with concurrent dual-band modulated signals. Lastly, by using the gain contour at the back-off power level, the non-linear AM-AM response caused by the varying input capacitance of the main transistor is mitigated. The proposed dual-band output power combiner and the back-off gain contour technique were applied to design of a dual-band two-way Doherty PA using the commercialized 25W Gallium Nitride (GaN) transistor. Measurement of the two-way DPA shows a gain of 7.5 9.5 dB at 2.05 2.3 GHz and 9 11 dB at 3.2 3.62 GHz. The efficiency at 6 dB backoff is greater than 49% and 47% across the two frequency bands. The linearizability of the dual-band DPA is validated using various carrier aggregated signals. The PA exhibits linear behaviour when driven by up to 80 MHz intra-band carrier aggregated signal and 20 MHz concurrent dual-band signal after DPD. Additionally, carrier aggregated signals usually lead to a PAPR value between 8-10 dB. The efficiency of classic two-way DPA deteriorates when dealing with such signals. To cope with the efficiency deterioration, a three-way DPA was designed. Simulations of the three-way DPA show that the gain is greater than 9 dB within the two frequency bands, 2.05 2.32 GHz and 3.35 3.65 GHz. The efficiency at 10-dB back-off is greater than 40% in the two frequency bands.
Living Labs: a systematic literature review

This paper presents a systematic literature review of the body of scientific Living Labs literature. Based on a general review of the Google Scholar and Web of Science databases, we can conclude that the Living Labs movement in terms of theory and research has taken off since 2006 in quantity of published papers. However, in terms of quality and impact, the academic field of Living Labs is still rather insignificant. An analysis of the 45 most cited papers reveals that the practice-based side is much further developed than the theoretical side, with only few references to more established innovation theories such as Open Innovation and User Innovation, despite the fact that concepts from both literature streams are present in all papers. Strikingly, 18 out of 45 papers refer to no framework at all, remaining merely descriptive. There is also a lack of empirical, more quantitative and comparative studies that focus on the added value of Living Labs. This paints the picture of Living Labs as a research domain in development which calls for a better anchoring within more established innovation theories in order to advance the field.
Exploring HADOOP as a Platform for Distributed Association Rule Mining

Association rule mining is one of the important data mining techniques. Association rule mining is used to discover associations between different items in large datasets. The Apriori algorithm for association rule mining forms the basis for most other association rule mining algorithms. The original Apriori algorithm runs on a single node or computer. This limits the algorithm’s capability to run on large datasets due to the limited computational resources available. There have been various studies for parallelizing the algorithm. In this paper, Apache Hadoop was chosen as the distributed framework to implement the Apriori algorithm and to evaluate the performance of the algorithm on Hadoop. The Apriori algorithm was modified to be run on Hadoop. Performance analysis shows that Hadoop is a promising platform for distributed association rule mining.
ASSESSMENT OF GLOBAL WIND ENERGY RESOURCE UTILIZATION POTENTIAL

Abstract. Development of wind energy resource (WER) is a key to deal with climate change and energy structure adjustment. A crucial issue is to obtain the distribution and variability of WER, and mine the suitable location to exploit it. In this paper, a multicriteria evaluation (MCE) model is constructed by integrating resource richness and stability, utilization value and trend of resource, natural environment with weights. The global resource richness is assessed through wind power density (WPD) and multi-level wind speed. The utilizable value of resource is assessed by the frequency of effective wind. The resource stability is assessed by the coefficient of variation of WPD and the frequency of prevailing wind direction. Regression slope of long time series WPD is used to assess the trend of WER. All of the resource evaluation indicators are derived from the atmospheric reanalysis data ERA-Interim with spatial resolution 0.125°. The natural environment factors mainly refer to slope and land-use suitability, which are derived from multi-resolution terrain elevation data 2010 (GMTED 2010) and GlobalCover2009. Besides, the global WER utilization potential map is produced, which shows most high potential regions are located in north of Africa. Additionally, by verifying that 22.22 % and 48.8 9% operational wind farms fall on medium-high and high potential regions respectively, the result can provide a basis for the macroscopic siting of wind farm.
INFLUENCE OF ARBUSCULAR MYCORRHIZAL FUNGI INOCULATION ON PLANT GROWTH PERFORMANCE, PHYSIOLOGICAL CHANGES AND YIELD QUALITY OF SWEET BASIL GROWN IN SOILLESS CULTURE MEDIA

A study was conducted to investigate the growth performance, physiological changes and yield quality of sweet basil (Ocimum basilicum) to inoculation by different rate (0, 10, 20 and 30g inoculums) of Arbuscular Mycorrhizal Fungi (AMF) under the soilless culture system. The result showed that plant height, total leaf area, plant fresh and dry weight, root shoot ratio, total chlorophyll content, photosynthetic rate, stomatal conductance, total ethanol soluble carbohydrate and leaf ascorbic acid were significantly influenced by AMF. Oil production increased significantly with increasing the inoculums rate on both fresh and dry weights of basil. Spore counts and percentage of root colonization were not significantly affected by AMF inoculation.
The Use Of First Language In Limited English Proficiency Classes: Good, Bad Or Ugly?

There has been an ongoing debate among language teachers on whether to use students’ first language (L1) in second language (L2) teaching. Nevertheless, the use of L1 in L2 teaching has been advocated with grounded theory as far as it merits the situation. This research article aims to investigate the effectiveness of the use of L1 to generate ideas for second language writing among low proficiency ESL learners. The study employed the experimental research design where students in the experimental group used Bahasa Melayu in generating ideas before they resumed writing their essays in English. Students in the control group used English. Two independent raters graded the essays and the scores were analysed using the paired t-test. The findings showed a marked improvement in the writing performance of students who used their first language to generate ideas before using their second language for writing. Based on the findings, we recommend that teachers encourage the use of first language before writing or composing in English especially among low-level proficiency ESL learners.
L’intégration financière : contrainte et/ou opportunité pour la croissance économique des pays de l’Union du Maghreb Arabe (UMA)

Résumé : La relation entre l’intégration financière et la croissance économique revêt toujours un intérêt particulier. Les travaux théoriques et empiriques ont trouvé des résultats mitigés qui peuvent être classés en deux catégories : effets négatifs et effets positifs. En fait, certains auteurs ont montré que la libéralisation du compte de capital n'a pas d'effet significatif sur la croissance économique (Grilli et Milesi-Ferretti 1995 ; Rodrick 1998 ; Kraay 1998 ; O'Donnell 2001; Edison et al 2002). Néanmoins, plusieurs études théoriques et empiriques ont affirmé que la libéralisation du compte de capital peut aider les pays à augmenter leur taux de croissance et à améliorer leur niveau de vie (Gurley et Shaw 1955, McKinnon 1973; Quinn 1997; Levine et Zervos, 1998; Chan-Lau et Chen, 2001 ; Bekaert et al 2005; Levchenko et al 2008; Mensi et al 2010). L'objectif de ce travail consiste à étudier les effets de l'intégration financière sur la croissance économique dans les trois pays du Maghreb (Algérie, Maroc et Tunisie) et ce, en utilisant la méthode de cointégration des séries temporelles. Les résultats des estimations montrent que l'intégration financière affecte positivement, mais un peu différemment, la croissance économique des pays du Maghreb. Mots-clés : l’intégration financière, la croissance économique, les pays du Maghreb, la cointégration des séries temporelles.
CURRENT DISTRIBUTION AND ABUNDANCE OF THE O‘AHU ‘ELEPAIO

Abstract The O‘ahu ‘Elepaio (Chasiempis sandwichensis ibidis) is a monarch flycatcher endemic to the Hawaiian island of O‘ahu. This forest bird has declined seriously in the last few decades and was listed as endangered under the federal Endangered Species Act in April 2000. The current distribution and population size of the O‘ahu ‘Elepaio are poorly known, and this information is vital to designing a recovery plan and implementing recovery actions. We surveyed most of O‘ahu for ‘Elepaio from 1992–2000 and compiled published and unpublished observations to estimate the current population size and construct current, recent historical, and prehistoric distribution maps. Based on 411 observations since 1991, we estimate the current population to be 1974 birds in six large subpopulations and several smaller ones. The breeding population consists of about 1768 birds due to a male-biased sex ratio, and the genetically effective population size is even lower because of the fragmented distribution. Total area of the current range is approximately 5486 ha, only 4% of the prehistoric range, and 25% of the range in 1975. Habitat loss to urbanization and agriculture caused large range reductions in the past, but cannot explain more recent declines. ‘Elepaio disappeared first from areas of higher rainfall, possibly because epizootics of introduced mosquito-borne diseases are more frequent where wetter conditions provide more mosquito breeding habitat. Management is urgently needed to prevent further declines and extirpation of smaller subpopulations.
Efficiency and thermal stability of encapsulated anthocyanins from red dragon fruit (Hylocereus polyrhizus (Weber) Britton & Rose) using microwave-assisted technique

Anthocyanins are one of the commonly used natural colorants for beverages, confectionary, fruit preparation and ice cream. Strong antioxidant activity of these anthocyanins has attracted great interest to the food industry. The instability of anthocyanins through the factors such as light, pH, temperature and oxygen has given problem during processing and storage of these compounds. One of the approaches to overcome this problem is by encapsulating the material using wall material. This study was conducted to investigate the efficiency of encapsulation of anthocyanins from red dragon fruit (Hylocereus polyrhizus (Weber) Britton & Rose) using microwave-assisted technique with different drying times and thermal stability of the encapsulated anthocyanins. Encapsulated anthocyanins were produced in form of powder using maltodextrin as the wall material. The encapsulation drying time were varied from 1 min to 3 min with fixed power, 330W. The encapsulated anthocyanins were analyzed in effect of thermal heating (60°C and 80°C). The results indicated that, at different encapsulation drying time, 2 min capsule showed the highest yield of encapsulation where 3 min capsule showed the highest encapsulation efficiency followed by 2 min capsule with 4% differences. From this study the encapsulation at 2 min drying time showed the most feasible encapsulation process. Thermal study at 60°C and 80°C showed that anthocyanins degraded faster at higher temperature, 80°C for all capsule types.
Clean vehicles as an enabler for a clean electricity grid

California has issued ambitious targets to decarbonize transportation through the deployment of electric vehicles (EVs), and to decarbonize the electricity grid through the expansion of both renewable generation and energy storage. These parallel efforts can provide an untapped synergistic opportunity for clean transportation to be an enabler for a clean electricity grid. To quantify this potential, we forecast the hourly system-wide balancing problems arising out to 2025 as more renewables are deployed and load continues to grow. We then quantify the system-wide balancing benefits from EVs modulating the charging or discharging of their batteries to mitigate renewable intermittency, without compromising the mobility needs of drivers. Our results show that with its EV deployment target and with only one-way charging control of EVs, California can achieve much of the same benefit of its Storage Mandate for mitigating renewable intermittency, but at a small fraction of the cost. Moreover, EVs provide many times these benefits if two-way charging control becomes widely available. Thus, EVs support the state’s renewable integration targets while avoiding much of the tremendous capital investment of stationary storage that can instead be applied towards further deployment of clean vehicles.
Photon-Modulated Wettability Changes on Spiropyran-Coated Surfaces

A coating of photoresponsive spiropyran molecules covalently bound to a glass surface along with a mixture of organosilanes to control the surface environment was prepared. The relatively nonpolar spiropyran can be reversibly switched to a polar, zwitterionic merocyanine isomer that has a much larger dipole moment by UV light, and back again by visible light. The contact angle was 11°−14° lower for dry, spiropyran-coated surfaces after irradiation with UV than that for dry, spiropyran-coated surfaces after irradiation with visible light. The light-induced changes observed in the surface energy were correlated to the switching of the surface-bound spiropyran molecule between polar and nonpolar forms by means of fluorescence spectroscopy and epifluorescence microscopy. Water in capillary tubes coated with the photosensitive layer was observed to rise when the wavelength of incident light was switched from visible to UV. The UV-induced rise was of the order of 2.8 mm for a 500 μm diameter capillary. This mic.
Concerted evolution of the rDNA ITS-1 in two caddisfly species : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Ecology at Massey University

The ribosomal RNA (rRNA) gene family shows high levels of within-species homogeneity and between-species diversity. This pattern · of mutation distribution among gene family members is termed concerted evolution. Molecular drive is a process by which mutations spread through a gene family (homogenization) and through a population (fixation) as a consequence of nonMendelian DNA transfer within and between chromosomes. The fast evolving internal transcribed spacers (ITS) of the rDNA are considered to be homogenized within species and within genetically isolated populations. However, recent studies question the dogma of homogenization and caution the use of ITS in phylogenetic and population studies. Two presumed sister species (Triplectides obsoleta and T. dolichos) were chosen for an investigation of ITS-1 variation. ITS-specific PCR primers were developed that amplified products homologous to a range of other insects. In a pilot study, variation in a single individual T. obsoleta was found among eight ITS-1 clones but not in ITS-2. Therefore, ITS-1 was chosen for a survey of the nature of the variation, testing the extent of heterogeneity in these species, the types of coevolutionary changes taking place in this region, and its usefulness as a population genetic marker. This survey required an hierarchical approach, sampling multiple ITS-1 copies from within and among individuals. 203 ITS-1 clones were screened for conformational differences by single-strand conformation polymorphism (SSCP) analysis of restriction digested fragments. Some ITS-1 variants were present at a higher frequency than others in all 17 individuals tested. All variants derived from independent PCR reactions were sequenced. The type of DNA sequence variation was very similar in both species though T. dolichos was
Got a date or something ? ” An analysis of the role of humour and laughter in the workplace meetings of English language teachers

This chapter brings instances of humour and laughter into relief using a corpus of authentic institutional interaction of English language teachers in school staff meetings. Humour is used within the meetings as a means of showing mutual support and creating solidarity. The corpus also contains a large proportion of subversive humour, or humour which is directed against the institution, individuals in the group, the group itself and the students. Identifying humour in the data is not a simple case of finding instances of laughter or assuming that it signifies either the intention of the speaker to elicit laughter, or to be humourous. However, wherever humour is manifested, laughter frequently occurs. The methodological issue of identifying and transcribing humour is discussed.
Serum Glucagon-Like Peptide-1 Changes in Women with Type 2 Diabetes Following a Four Weeks Aerobic Exercise

ype 2 diabetes mellitus (T2DM) is a metabolic disease in which the glucose, protein and fat metabolism is altered, and as a result, the plasma glucose levels are elevated. T2DM is also known as adult-onset diabetes, since it develops gradually (1). Eighty percent of T2DM patients are obese (2). The most important risk factors of T2DM development are obesity, genes, eating habits and sedentary life style (3). These factors are believed to affect the individual ́s insulin resistance, blood glucose levels and eventually also the individual ́s pancreatic β-cell function (3). Both insulin resistance and the pancreatic β-cell dysfunction are thought to be central factors for the development of T2DM (3). T 1. Department of Exercise Physiology,
Image Enhancement based on Contrast Enhancement & Fuzzification Histogram Equalization and Comparison with Contrast Enhancement Techniques

Contrast Enhancement is a technique which comes into the part of Image Enhancement. Contrast Enhancement is used to enhance the visual quality of any captured or other image. Contrast Enhancement can be performed with the help of Histogram equalization (HE). In this technique, the image is collected in the gray scale allocation. The image is then partitioning and applying adaptive Histogram equalization (AHE). Fuzzy logic provides a set of logics which enhance the contrast and visibility of any image. In this technique, the visual quality and the contrast of image will change and then compare these results with previous techniques. The performance of several established image enhancement techniques is presented in terms of different parameters like Absolute mean brightness error (AMBE), Peak signal to noise ratio (PSNR), contrast and Visual quality.
The Development of Biomimetic Spherical Hydroxyapatite/Polyamide 66 Biocomposites as Bone Repair Materials

A novel biomedical material composed of spherical hydroxyapatite (s-HA) and polyamide 66 (PA) biocomposite (s-HA/PA) was prepared, and its composition, mechanical properties, and cytocompatibility were characterized and evaluated. The results showed that HA distributed uniformly in the s-HA/PA matrix. Strong molecule interactions and chemical bonds were presented between the s-HA and PA in the composites confirmed by IR and XRD. The composite had excellent compressive strength in the range between 95 and 132 MPa, close to that of natural bone. In vitro experiments showed the s-HA/PA composite could improve cell growth, proliferation, and differentiation. Therefore, the developed s-HA/PA composites in this study might be used for tissue engineering and bone repair.
Impacts of Changes in Market Fundamentals and Price Momentum on Hedging Live Cattle

Basis prediction errors for live cattle in the five major Mandatory Livestock Price Reporting areas are analyzed to determine how shifts in the live cattle market fundamentals and contemporaneous market conditions, including price momentum, impact ability to hedge. Results reveal that thinness of the negotiated cash market, weight of cattle marketed, and contemporaneous factors statistically impact basis prediction errors. Impacts vary across region. Volatility in cost of gain and delivery costs have greater effects on basis prediction error than do market trends.
DETERMINATION OF IN VITRO ANTIOXIDANT ACTIVITY OF SESAMUM PROSTRATUM RITZ (PEDALIACEAE) WHOLE PLANT

Antioxidant activity of petroleum ether, benzene, ethyl acetate, methanol and ethanol extracts of Sesamum prostratum whole plant have tested using various antioxidant model systems viz., DPPH, hydroxyl, superoxide and ABTs. Methanol extract of S.prostratum is found to possess highest DPPH, hydroxyl and ABTs radical cation scavenging activities. The superoxide radical scavenging activity of S.prostratum, ethanol extracts records the highest. Like the antioxidant activity, reducing power of the extract increases with increase in concentration. This study indicates significant free radical scavenging potential of S.prostratum whole plant which can be exploited for the treatment of various free radical mediated ailments.
Role of Training in Developing Economy: A Review of Ghana and South Africa

Training is a critical aspect of development of a knowledge-workforce in an economy. This paper accentuates the role of training in developing economy which involves an analysis of the economy as a whole, the employers and workers. In other to achieve this, South African and Ghanaian training programmes were reviewed. In the South Africa and Ghana context, training has only recently received attention as a means of addressing critical personnel development initiatives. Therefore, the focus is now shifting towards fast tracking skills development, which is being integrated into the overall business plan of organizations strategies. Thus, the need to be initiated to harness trained workers as competitive resources for the new global economy and for world-class competitiveness, this paper concludes that training roles are very fundamental in developing economy in both South Africa and Ghana respectively. Keywords: Development, Economy, Training