Miracle-dz/UniFAR-FTUs huggingface dataset:
CLARIFICATION OF THE ALGORITHM FOR ESTIMATING THE FREQUENCY OF THE SIGNAL RECEIVED BY THE SATELLITE COMMUNICATION SYSTEM IN A CONTINUOUS MODE UNDER THE INFLUENCE OF «NEIGHBORING CHANNELS»

Satellite communication systems that use phase modulation of a signal designed to transmit useful information in a continuous mode face the problem of frequency uncertainty of the signal when used as intended. For demodulators of satellite modems of such systems operating with a continuous input signal, the most significant is the problem of synchronization in the frequency of carrier oscillations in the conditions of frequency uncertainty of the signal. This synchronization task is actually reduced to estimating the true parameters of the signal, namely the estimation of the carrier frequency. The complexity of the task of estimating the carrier frequency in a satellite channel with phase modulation is exacerbated by the presence of additional interfering actions of "neighboring channels" - signals with the same type of modulation and the same data rate. The paper specifies the algorithm for estimating the carrier frequency of the signal received by the satellite communication system in a continuous mode, taking into account the influence of "neighboring channels" of information transmission. This algorithm allows to estimate the carrier frequency according to the rule of maximum likelihood, taking into account the condition of uncertainty of all parameters of the signal received by the satellite communication system in continuous mode, taking into account the influence of "neighboring channels" of information with a minimum observation interval. It includes the steps of: calculating the readings of the amplitude spectrum of the received signal and counting the convolution of the obtained amplitude spectrum with frequency response UV; calculating the count of the derivative convolution and finding the initial estimate of the frequency; based on the obtained evaluation of the evaluation procedure based on the multiplication of the phase of the received signal and the calculation of the estimated carrier frequency of the received signal.In order to assess the effectiveness of this algorithm in the comparison of the effectiveness of the estimates provided by the proposed procedure and the estimates made on the basis of subtraction of the global maximum convolution of the amplitude spectrum of the received signal. The results of this assessment presented in the paper showed that the dependences of the normalized variance on practically do not differ. That confirms the efficiency and feasibility and practical value of the algorithm for estimating the carrier frequency given in the work, taking into account the influence of "neighboring channels" of useful signal transmission. A promising area for further study of the issues raised in the work is the adaptation of this algorithm to the carrier frequency estimation in combined phase synchronization systems that have the ability to increase the order of astatism, monitoring the carrier frequency (pilot signal), the phase of which is modulated by a deterministic Doppler signal.
Assessing Genetic Diversity and Population Structure of Kalmia latifolia L. in the Eastern United States: An Essential Step towards Breeding for Adaptability to Southeastern Environmental Conditions

Kalmia latifolia L. (mountain laurel), an attractive flowering shrub, is considered to be a high-value ornamental plant for the eastern United States. Limited information on the genetic diversity and structure of K. latifolia is available, which obstructs efficient germplasm utilization and breeding for adaptability to southeastern environmental conditions. In this study, the genetic diversity of 48 wild K. latifolia plants sampled from eight populations in the eastern U.S. was assessed using eight inter simple sequence repeat (ISSR) markers. A total of 116 bands were amplified, 90.52% of which (105) were polymorphic. A high level of genetic diversity at the species level was determined by Nei’s gene diversity (0.3089) and Shannon’s information index (0.4654), indicating that K. latifolia was able to adapt to environmental changes and thus was able to distribute over a wide latitudinal range. In terms of the distribution of genetic diversity, Nei’s genetic differentiation and analysis of molecular variance (AMOVA) showed 38.09% and 29.54% of diversity existed among populations, respectively, elucidating a low-to-moderate level of among-population genetic differentiation. Although a relatively large proportion of diversity was attributed to within-population variation, low diversity within populations (mean genetic diversity within populations (HS) = 0.19) was observed. Both STRUCTURE and unweighted pair group method with arithmetic mean (UPGMA) dendrograms exhibited the clustering of populations that inhabit the same geographic region, and four clusters correlated with four geographic regions, which might be attributed to insect pollination, small population size, and environmental conditions in different habitats. These results function as an essential step towards better conserving and utilizing wild K. latifolia resources, and hence promoting its genetic improvement and breeding for adaptability to southeastern environmental conditions.
Schizophrenic Psychosis Symptoms in a Background of Mild-To-Moderate Carnitine Palmitoyltransferase II Deficiency: A Case Report

Schizophrenia is a multifaceted mental illness characterized by cognitive and neurobehavioral abnormalities. Carnitine palmitoyltransferase II (CPT II) deficiency is a metabolic disorder resulting in impaired transport of long-chain fatty acids from the cytosol to the mitochondrial inner membrane, where fatty acid β-oxidation takes place. Here, we present an interesting clinical case of an adolescent male that presented with psychosis and a history of mild-to-moderate CPT II deficiency. To identify germline genetic variation that may contribute to the phenotypes observed, we performed whole-exome sequencing on DNA from the proband, unaffected fraternal twin, and biological parents. The proband was identified to be homozygous for the p.Val368Ile and heterozygous for the p.Met647Val variant in CPT2. Each of these variants are benign on their own; however, their combined effect is unclear. Further, variation was identified in the dopamine β-hydroxylase (DBH) gene (c.339+2T>C), which may contribute to decreased activity of DBH; however, based on the patient’s presentation, severe DBH deficiency is unlikely. In conclusion, the variants identified in this study do not clearly explain the observed patient phenotypes, indicating that the complex phenotypes are likely caused by an interplay of genetic and environmental factors that warrant further investigation.
Detection and Discrimination of Bearing Faults of A Three Phase Induction Motor from Single Phasing Faults using Wavelet Transform

This paper describes a protection scheme for a 3phase induction motor to detect and discriminate the bearing faults from single phasing faults. The loyalty of an Asynchronous induction motor is of predominant importance in various applications like industrial, commercial, aerospace and military. Rotating mechanical part bearings played an important role in the reliability and performance of all motor systems. In this paper the 3phase stator current signals are captured in P.C using DIP8000 that is having a sample frequency of 5.3KHZ. These signals are analyzed with Bior5.5 wavelet and decomposed up to 5 level. The values of d1 coefficient is above the predefined value of Threshold1 (th1) then the motor is under fault. In case of bearing faults all these values are above the predefined threshold otherwise it is healthy. The phase which is above Th1 represents the single phasing fault on that phase.
Top-of-atmosphere albedo bias from neglecting three-dimensional radiative transfer through clouds

Clouds cover on average nearly 70% of Earth’s surface and are important for the global albedo. The magnitude of the shortwave reflection by clouds depends on their location, optical properties, and 3D structure. Earth system models are unable to perform 3D radiative transfer calculations and thus partially neglect the effect of cloud morphology on albedo. We show how the resulting radiative flux bias depends on cloud morphology and solar zenith angle. Using large-eddy simulations to produce 3D cloud fields, a Monte Carlo code for 3D radiative transfer, and observations of cloud climatology, we estimate the effect of this flux bias on global climate. The flux bias is largest at small zenith angles and for deeper clouds, while the albedo bias is largest (and negative) for large zenith angles. Globally, the radiative flux bias is estimated to be 1.6 W m⁻² and locally can be on the order of 5 W m⁻².
Spatial modelling of accidents risk caused by driver drowsiness with data mining algorithms

Abstract Driver drowsiness causes many road accidents, and preparing a risk map of these accidents with spatial criteria and data mining algorithms highlights accident points well. In this study, accidents risk caused by driver drowsiness in Qazvin province, Iran, was modelled using decision tree (DT), random forest (RF) and support-vector regression (SVR) algorithms in GIS environment. Seven spatial criteria including road segment length, road width, slope angle, speed limit, land use/cover, distance to service area and distance to speed camera were selected as effective criteria in modelling. The effect of criteria in modelling was applied using a fuzzy method, and three risk maps were prepared. Evaluation with ROC-AUC showed that the AUC for RF, SVR and DT models were 0.904, 0.863 and 0.805, respectively, and the RF model overall had the best performance. Examining the importance of criteria showed that the speed limit was the most important criterion for modelling.
Non-Hermitian and topological photonics: optics at an exceptional point

Abstract In the past few years, concepts from non-Hermitian (NH) physics, originally developed within the context of quantum field theories, have been successfully deployed over a wide range of physical settings where wave dynamics are known to play a key role. In optics, a special class of NH Hamiltonians – which respects parity-time symmetry – has been intensely pursued along several fronts. What makes this family of systems so intriguing is the prospect of phase transitions and NH singularities that can in turn lead to a plethora of counterintuitive phenomena. Quite recently, these ideas have permeated several other fields of science and technology in a quest to achieve new behaviors and functionalities in nonconservative environments that would have otherwise been impossible in standard Hermitian arrangements. Here, we provide an overview of recent advancements in these emerging fields, with emphasis on photonic NH platforms, exceptional point dynamics, and the very promising interplay between non-Hermiticity and topological physics.
Planificación de caminos y trayectorias de una formación de robots autónomos

In this work the latest research results are presented within the framework of the thesis Motion planning for a formation of autonomous robots. Path planning is the task of finding a continuous path that will drive the robot from the start to the goal location avoiding collisions with obstacles. Based on the Simple Genetic Algorithm (AGS) exploration method and the classic A* search algorithm, a hybrid path planning algorithm for multirobots systems is proposed. This algorithm finds the optimal (or near-optimal) collision-free paths of a robot formation from an initial configuration to a final configuration, taking into account the possibility of separation and their subsequent reunification (split&merge). The results of the simulations show that the algorithm is suitable for use in complex environments with obstacles and for a multirobots system.
Burning Water, Overview of the Contribution of Arjen Hoekstra to the Water Energy Nexus

This paper gives an overview of the contribution of water footprint (WF) studies on water for energy relationships. It first explains why water is needed for energy, gives an overview of important water energy studies until 2009, shows the contribution of Hoekstra’s work on WF of energy generation, and indicates how this contribution has supported new research. Finally, it provides knowledge gaps that are relevant for future studies. Energy source categories are: 1. biofuels from sugar, starch and oil crops; 2. cellulosic feedstocks; 3. biofuels from algae; 4. firewood; 5. hydropower and 6. various sources of energy including electricity, heat and transport fuels. Especially category 1, 3, 4, 5 and to a lesser extent 2 have relatively large WFs. This is because the energy source derives from agriculture or forestry, which has a large water use (1,2,4), or has large water use due to evaporation from open water surfaces (3,5). WFs for these categories can be calculated using the WF tool. Category 6 includes fossil fuels and renewables, such as photovoltaics and wind energy and has relatively small WFs. However, information needs to be derived from industry.
Dietary Nitrogen and Energy Metabolism in the Ruminant: Effect of Source of Nitrogen.

Three experiments were conducted to determine the effects o f dietary nitrogen on the energy status o f ruminants and the feasibility of using L-camitine to prevent the negative effects associated with overfeeding nitrogen. The objectives o f the first experiment were to monitor the nitrogen and energy status o f cows grazing ryegrass pastures through the measurement of key blood metabolites and insulin and to determine the protein supplementation scheme which would maximize milk yield and maintain plasma urea nitrogen levels below dangerous levels. In the first experiment, the protein supplement that supplied excess total protein exerted negative effects on body condition and plasma nitrogen metabolites but had a minimal effect on plasma energy metabolites and insulin. The nutritional status o f the cows post-partum and prior to grazing seemed to have a greater effect compared with the dietary protein supplements on the ability o f the cow to maintain condition during early lactation. The second experiment was conducted to investigate the effects of intravenous administration of L-camitine in sheep, and to determine its ability to ameliorate subclinical hyperammonemia experimentally-induced using an oral urea load test. Results indicated that intravenous administration o f Lcamitine (12.72 mmol/kg75 BW) increased plasma L-camitine, glucose and nonesterified fatty acid concentrations in sheep. Additionally, when L-camitine (6.36 mmol/kg7s BW) was administered intravenously 30 min preceding an oral urea load test, the development o f hyperammonemia was prevented. The last experiment was conducted to determine the influence of supplemental L-camitine on growth and metabolic criteria o f growing lambs fed a diet high in nonprotein nitrogen (compromising 50% o f total dietary nitrogen).
Crystal structure of N,N-diphenylformamide, C13H11NO

Abstract C13H11NO, orthorhombic, Pca21 (no. 29), a = 23.801(4) Å, b = 6.0510(13) Å, c = 7.2677(14) Å, V = 1046.7(3) Å3, Z = 4, Rgt(F) = 0.0335, wRref (F2) = 0.0896, T = 200 K.
Venture Capitalists’ Investment Criteria in Poland: Entrepreneurial Opportunities, Entrepreneurs, and Founding Teams

The aim of this article is to explore the decision-making policies by Polish Venture Capital (VC) firms, with special focus on the perception of entrepreneurs. This paper presents the results of a conjoint analysis and assessment of the importance of select characteristics among entrepreneurs and the qualities of a team of founders comprising managers of VC firms. The data were collected via face-to-face interviews with 26 Venture Capitalists. In the conjoint experiment, six attributes were presented, among which three represented characteristics of the entrepreneur (his/her passion and experience) and the management team (experience and completeness) alongside three characteristics of the opportunity (readiness of the product/service, growth rate of the market, and innovativeness of the whole project). VC managers ranked the importance of eight characteristics of the entrepreneurs related to their decisions and assessed the functional composition of the team of founders. The results of the experiment show that venture capitalists (VCs) most strongly appreciate the readiness of the product and entrepreneur’s passion. However, their preferences varied across the sample. The results of the ranking also show that the VC managers highly value the honesty of the entrepreneur. VCs typically prefer a team of founders, rather than a single-person project, preferably consisting of persons at least familiar with the technology and the market. This study contributes significantly to the state-of-the-art, as research on VC investment policy (investment criteria) is relatively rare in Central and Eastern Europe, where the VC industry is starting to flourish.
The Transmembrane Receptor UNC-40 Directs Muscle Arm Extension in Caenorhabditis elegans

In Caenorhabditis elegans, body muscles extend muscle arms in a chemotropic fashion to the nearest nerve cord and serves as a model for the investigation of guided cell migration. I found that the transmembrane receptor UNC-40/DCC is required, and functions cell-autonomously to regulate muscle arm extension. Surprisingly, both the canonical ligand of UNC-40 (UNC-6/Netrin) and the extracellular domains of UNC-40 are dispensable, suggesting that UNC-40 relies on a co-receptor or other polarizing pathways to direct muscle arm extension. Furthermore, through double mutant analyses and the use of a neomorphic phenotype induced by UNC-40 over-expression, I define a distinct UNC-40 pathway in which UNC-73/Trio, the WAVE actin polymerization complex, and components of the dense body likely act downstream of UNC-40 to regulate muscle arm extension. Distinct modes of UNC-40’s function in muscle arm extension compared to its role in neurons provide a more complete understanding of how this conserved guidance receptor functions.
High Performance Zinc Oxide Nanorod-Doped Ion Imprinted Polypyrrole for the Selective Electrosensing of Mercury II Ions

A biomimetic, ion-imprinted polymer (IIP) was prepared by electropolymerization of pyrrole at the surface of gold electrodes decorated with vertically grown ZnO nanorods. The vertical growth of the nanorods was achieved via an ultrathin aryl monolayer grafted by reduction of diazonium salt precursor. Pyrrole was polymerized in the presence of L-cysteine as chelating agent and Hg2+ (template). Hg2+-imprinted polypyrrole (PPy) was also prepared on a bare gold electrode in order to compare the two methods of sensor design (Au-ZnO-IIP vs. Au-IIP). Non-imprinted PPy was prepared in the same conditions but in the absence of any Hg2+ template. The strategy combining diazonium salt modification and ZnO nanorod decoration of gold electrodes permitted us to increase considerably the specific surface area and thus improve the sensor performance. The limit of detection (LOD) of the designed sensor was ~1 pM, the lowest value ever reported in the literature for gold electrode sensors. The dissociation constants between PPy and Hg2+ were estimated at [Kd1 = (7.89 ± 3.63) mM and Kd2 = (38.10 ± 9.22) pM]. The sensitivity of the designed sensor was found to be 0.692 ± 0.034 μA. pM-1. The Au-ZnO-IIP was found to be highly selective towards Hg2+ compared to cadmium, lead and copper ions. This sensor design strategy could open up new horizons in monitoring toxic heavy metal ions in water and therefore contribute to enhancing environmental quality.
Cultural differences in the effects of contextual factors and privacy concerns on users’ privacy decision on social networking sites

ABSTRACT Many social network sites (SNSs) have become available around the world and users’ online social networks increasingly include contacts from different cultures. However, there is lack of investigation into the concrete cultural differences in the effects of contextual factors and privacy concerns on users’ privacy decisions on social network sites (SNSs). The goal of this paper is to understand how contextual factors and privacy concerns cast different impact on privacy decisions, such as friend request decisions, information disclosure and perceived risk, in different countries. We performed a quantitative study through a large-scale online survey across the US, Korea and China to model the relationships between contextual factors, privacy concerns and privacy decisions. We find that the contextual influence and focus of privacy concerns vary between the individualistic and collectivistic countries in our sample. We suggest that multinational SNS service providers should consider different contextual factors and focus of privacy concerns in different countries and customise privacy designs and friend recommendation algorithms in SNSs in different countries.
Phytochemical Analysis and Antioxidant Potential of Cucumis Melo Seeds

Secondary metabolites or phytochemicals from plants have eminent pharmacological activities such as anti-oxidative, anti-allergic, antibiotic, hypoglycaemic and anti-carcinogenic. These secondary metabolites protect the cells from the damage caused by unstable molecules known as free radicals. They can inhibit oxidation of free radicals in both human body and food system. The food industry uses both natural and synthetic antioxidants to extend shelf life of products. But the application of synthetic antioxidant has been limited due to its carcinogenicity. Recently, research has been focused on fruit materials, which were considered rich source of antioxidant compounds. In this study the phytoconstituents of seed extracts of two varieties of Cucumis melo L. , namely Cucumis melo cantalupensis and Cucumis melo reticulatus were studied for their antioxidant property by DPPH free radical scavenging method. During, this investigation, chloroform, petroleum ether, acetone, aqueous, and ethanolic extracts of the fruit seed were made using cold extraction process. Phytochemical study revealed that anthroquinones, quinines, cardiac glycosides, terpenoids, phenols and steroids were present in aqueous extract of both the samples. The total phenolic content of their seed extracts was found to be 8.8 mg GAE/g of dry sample and 9.2 mg GAE/g of dry sample respectively. The phenolic content was found to be linearly proportional to the antioxidant ability of the samples. Key-words: Antioxidant, Cucumis melo cantalupensis, Cucumis melo reticulates, DPPH, Phenolic content,