Journal articles on the topic 'TRAMS (Computer program)'
To see the other types of publications on this topic, follow the link: TRAMS (Computer program).
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 journal articles for your research on the topic 'TRAMS (Computer program).'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.
1
Ushakov, Anton, and Zbigniew Łukasik. "Application of cluster analysis mechanisms for the exploration of container transportations functioning at selected ranges of the trans-siberian railway." AUTOBUSY – Technika, Eksploatacja, Systemy Transportowe 19, no. 6 (June 30, 2018): 1145–48. http://dx.doi.org/10.24136/atest.2018.243.
Full textAbstract:
The article describes the basic methods and mechanisms of cluster analysis in relation to transport. In addition, an example of the analysis of individual polygons of the Trans-Siberian Railway is shown using a computer program that implements Kruskal and Prim methods.
2
Zhou, Lei, Zhengjun Qiu, and Yong He. "Application of WeChat Mini-Program and Wi-Fi SoC in Agricultural IoT: A Low-Cost Greenhouse Monitoring System." Transactions of the ASABE 63, no. 2 (2020): 325–37. http://dx.doi.org/10.13031/trans.13499.
Full textAbstract:
HighlightsA quick solution for developing and deploying custom agricultural IoT systems is proposed.Low-cost and high-performance devices are used for the design of sensor nodes.A mobile application based on WeChat Mini-Program is developed for device and data management.The proposed system brings convenience to both users and developers.Abstract. Increasing demand for automatic management of agricultural production and real-time remote monitoring has increased the need for smart devices, wireless technologies, and sensors. The internet of things (IoT) has emerged as a common technology for the management of multiple devices by multiple users. Some professional solutions are relatively difficult to implement for researchers who are interested in agricultural IoT but do not have requisite skills in computers and electronics. The unfriendliness of the user software limits the practical application of agricultural IoT in China. This article presents a simple solution based on an SoC (system-on-chip) and WeChat mini-program that focuses on low-cost hardware, rapid development, user-friendly application design, and helping developers get a quick start in building a DIY monitoring system. The ESP8266, a high-performance SoC, is used as the microcontroller and Wi-Fi module to transfer the sensor data to a remote server. A WeChat mini-program provides the graphical user interface, enabling users to manage devices and access data by clicking. Users can log into the system using their WeChat accounts and bind devices by scanning QR codes on the devices. Thus, the complex management and device binding in conventional systems can be overcome. The system is easy to be expand and has great potential for greenhouse environmental monitoring in China. Keywords: Greenhouse ambient monitoring, Internet of things, WeChat mini-program, Wi-Fi SoC.
3
TOKTAMIŞ, Dilek. "The Effect of Experimental Cycles on the Traps Depths of Dosimetric Traps of Natural Calcite Minerals." Cumhuriyet Science Journal 43, no. 3 (September 30, 2022): 515–19. http://dx.doi.org/10.17776/csj.1139254.
Full textAbstract:
A trap found in a solid state radiation dosimetry is characterized by kinetic parameters such as trap depth (Ea), frequency factor (s), kinetic order (b) and carrier concentration (no). Trap depth (Activation energy) is the required energy to release carriers in the trap. In this study, it is investigated that how the dosimetric trap depths of the traps found in the four natural calcite minerals are affected by reusable of them as a dosimeter. All samples were irradiated about 36 Gy beta dose and read out by a thermoluminescence dosimeter (TLD) reader. A computer glow curve deconvulation program (CGCD) was used to get the kinetic parameters. And the results are compared for the four calcite samples.
4
Ferbeyre, Gerardo, James M. Smith, and Robert Cedergren. "Schistosome Satellite DNA Encodes Active Hammerhead Ribozymes." Molecular and Cellular Biology 18, no. 7 (July 1, 1998): 3880–88. http://dx.doi.org/10.1128/mcb.18.7.3880.
Full textAbstract:
ABSTRACT Using a computer program designed to search for RNA structural motifs in sequence databases, we have found a hammerhead ribozyme domain encoded in the Smα repetitive DNA of Schistosoma mansoni. Transcripts of these repeats are expressed as long multimeric precursor RNAs that cleave in vitro and in vivo into unit-length fragments. This RNA domain is able to engage in bothcis and trans cleavage typical of the hammerhead ribozyme. Further computer analysis of S. mansoni DNA identified a potential trans cleavage site in the gene coding for a synaptobrevin-like protein, and RNA transcribed from this gene was efficiently cleaved by the Smα ribozyme in vitro. Similar families of repeats containing the hammerhead domain were found in the closely related Schistosoma haematobium and Schistosomatium douthitti species but were not present in Schistosoma japonicum orHeterobilharzia americana, suggesting that the hammerhead domain was not acquired from a common schistosome ancestor.
5
Niskanen, Matti, and Timo Lähivaara. "COMPOSTI: A Python-based program for seismic trans-dimensional inversion." SoftwareX 21 (February 2023): 101298. http://dx.doi.org/10.1016/j.softx.2022.101298.
Full text
6
Fang, Jian, Jian Chi, and Hong Yi Jian. "TrapAB: A New Position Search Algorithm in Chinese Chess Computer Game." Applied Mechanics and Materials 380-384 (August 2013): 1621–24. http://dx.doi.org/10.4028/www.scientific.net/amm.380-384.1621.
Full textAbstract:
In this paper, we propose an improved alpha-beta search algorithm, named trappy alpha-beta (simply), for game-tree in order to identify and set the potential traps in the game playing. can be regarded as an extension of the traditional alpha-beta search algorithm which ties to predict when the opponent might make a mistake and select such moves that can most likely lead the an opponent into the trap by comparing the various scores returned through iterative deepening technology. In our experiment, we test the performance of in comparison with three game-tree search algorithms, i.e., min-max, trappy minimax, and alpha-beta, by playing with four testing opponents, which are obtained form a typical Chinese chess computer game program-Xqwizard (http://www.xqbase.com). The comparative results show that our designedcan effectively find and set the traps in the playing with opponents.
7
Evans, John T., Michael P. Sama, Joseph L. Taraba, and George B. Day. "Automated Calibration of Electrochemical Oxygen Sensors for Use in Compost Bedded Pack Barns." Transactions of the ASABE 60, no. 3 (2017): 957–62. http://dx.doi.org/10.13031/trans.12099.
Full textAbstract:
Abstract. The objective of this study was to develop an automated calibration process for a galvanic cell type oxygen sensor. The manufacturer recommended a two-point calibration at room temperature; however, testing revealed that the response was not linear when both the temperature and oxygen concentrations varied. Thus, additional points were needed to generate a representative calibration equation and to reduce the sensor prediction interval. The calibration process needed to be capable of automatically recording sensor response (voltage) at an array of temperatures and oxygen concentrations. Calibration gases were used to precisely control the oxygen concentration inside a small manifold, and an electronically controlled water bath was used to regulate the sensor and gas temperature. A custom computer program controlled the sampling order and the data collection process. The responses for three sensors were recorded at six temperature (10°C, 20°C, 30°C, 40°C, 50°C, and 60°C) and five oxygen concentration (0%, 5%, 10%, 15%, and 20% O2 absolute) combinations, for a total of 30 measurements per calibration. Calibration data were used to create a second-degree polynomial model with oxygen sensor voltage and temperature as input parameters, which reduced the prediction interval by over 1% O2 for each of the three sensors tested. The resulting prediction intervals ranged between 0.75% and 0.95% O2. Three sensors were mounted in a prototype oxygen probe and tested under controlled conditions to demonstrate the ability to measure oxygen concentration versus depth in a composting environment. Keywords: Aeration, Calibration, Compost, Dairy, Housing, Oxygen.
8
Tokarczyk, Jarosław, and Marek Dudek. "Methods for Computer Aiding the Configuration and Assessment of Auxiliary Mine Transportation Means." Management Systems in Production Engineering 28, no. 4 (December 1, 2020): 268–75. http://dx.doi.org/10.2478/mspe-2020-0038.
Full textAbstract:
AbstractMine transportation of materials in underground mine workings is realized by mine underground railways as well as by suspended monorails or floor-mounted railway. Transportation is realized on tracks placed on the floor of working or on rails suspended to roadway support. Each transport operation must be preceded by a transport design project, made in accordance with obligatory legislation. A part of the project are traction calculations. Their implementation in a computer program allows for minimization of the possibility of errors during the configuration of suspended queues and conducting traction calculations, which consequently leads to improve the level of safety. The article discusses the modular Safe Trans Design system, supporting the design of auxiliary mine transportation. The system has been implemented in the mines of JSW S.A. The assumptions and structure of the system as well as algorithms of operation of the ‘configurator of transportation sets’ and ‘assessment and reporting module’ are presented. The method of creating an auxiliary mine transportation system project is presented. Safe Trans Design system is used in planning, organizational and training activities implemented as part of transport safety management in mining plants. Developed methods can be easily adapted to other legislations of hard coal producers’ countries, where suspended monorails are used in underground auxiliary mining transportation systems.
9
Rahmawati, Rahmawati, Husna Gemasih, and Zulida Susanti. "PEMBERDAYAAN MASYARAKAT DESA SIMPUR MENJADI MASYARAKAT YANG MANDIRI DENGAN PENGEMBANGAN POTENSI PERTANIAN DAN PETERNAKAN." JURNAL PENGABDIAN KEPADA MASYARAKAT 24, no. 4 (April 23, 2019): 859. http://dx.doi.org/10.24114/jpkm.v24i4.12995.
Full textAbstract:
AbstrakTujuan yang ingin dicapai pada program Kuliah Kerja Nyata-Pembelajaran Pemberdayaan Masyarakat (KKN-PPM) Universitas Gajah Putih Takengon Tahun 2018 di Desa Simpur adalah pemberdayaan masyarakat di bidang pertanian dan peternakan sesuai dengan potensi sumber daya alam dan sumber daya manusia yang dimiliki Desa Simpur. Meningkatkan perekonomian masyarakat dengan memaksimalkan potensi pertanian dan peternakan yang terdapat di Desa Simpur dengan beberapa program yakni pembuatan kompos dari kotoran sapi, penyusunan ransum ternak sapi dan pembuatan ransum fermentasi, pembuatan perangkap hama, penanaman cabe kopay tumpang sari dengan bawang merah. Menciptakan kemandiriaan energi dengan pembuatan instalasi biogas karena Desa Simpur belum semua lokasi dialiri listrik PLN. Adapun metode yang digunakan untuk mencapai tujuan tersebut adalah 1)Penyuluhan, 2)Demontrasi, 3)Membuat kebun percontohan, 4)Pratek langsung, 5)Mengadakan monitoring, evaluasi perkembangan setiap program yang dijalankan secara berkala.Kata kunci : Pemberdayaan masyarakat, cabe kopay, perangkap hama, kompos, biogas.AbstractThe aim to be achieved in the Takengon Gajah Putih University Community Service Program activities in 2018 in Desa Simpur is community empowerment in agriculture and livestock in accordance with the potential of natural resources and human resources owned by the village of Simpur. Improving the economy of the community by maximizing the potential of agriculture and livestock in Simpur Village with several programs namely composting from cow dung, compiling cattle rations and making fermentation rations, natural pest control, planting Kopay Chilli intercropping with shallots. Creating energy independence by making biogas installations because the village of Simpur has not been electrified by PLN. Improve the performance of village officials by computer training and making village websites. The methods used to achieve these objectives are 1) Counseling 2) Demonstration and Experiments 3) Making Kopay Chilli Pilot Gardens 4) Direct Pratek 5) Conducting monitoring, evaluating the progress of each program that is run regularly.Keywords: community empowerment, Kopay chili, pest traps, compost, biogas.
10
Kaniewski, Marek, and Michał Cichoński. "Mathematical model of pantograph cooperation with two degrees of freedom with a catenary system." MATEC Web of Conferences 294 (2019): 05005. http://dx.doi.org/10.1051/matecconf/201929405005.
Full textAbstract:
The authors present a method of modeling pantograph cooperation with a catenary system by means of a computer program based on a pantograph discrete model with two degrees of freedom and a catenary system model as a focused mass that in the dynamic state has variable stiffness along the span. After performing the appropriate tests, the validation was carried out according to the proposed method in the PN EN 50318:2019-02 standard required in the Technical Specifications for the interoperability of the subsystem “Energy” and “Rolling stock -locomotives and passenger rolling stock” of the trans-European rail system in Europe.
11
Zhang, Chongyuan, Chongyuan Zhang, Michael O. Pumphrey, Jianfeng Zhou, Qin Zhang, Sindhuja Sankaran, Michael O. Pumphrey, Jianfeng Zhou, Qin Zhang, and Sindhuja Sankaran. "Development of an Automated High- Throughput Phenotyping System for Wheat Evaluation in a Controlled Environment." Transactions of the ASABE 62, no. 1 (2019): 61–74. http://dx.doi.org/10.13031/trans.12856.
Full textAbstract:
Abstract. Plant breeding has significantly improved in recent years; however, phenotyping remains a bottleneck, as the process of evaluating and measuring plant traits is often expensive, subjective, and laborious. Although commercial phenotyping systems are available, factors like cost, space, and need for specific controlled-environment conditions limit the affordability of these products. An accurate, user-friendly, adaptive, and high-throughput phenotyping (HTP) system is highly desirable to plant breeders, physiologists, and agronomists. To solve this problem, an automated HTP system and image processing algorithms were developed and tested in this study. The automated platform was an integration of an aluminum framework (including movement and control components), three cameras, and a laptop computer. A control program was developed using LabVIEW to manage operation of the system frame and sensors as a single-unit automated HTP system. Image processing algorithms were developed in MATLAB for high-throughput analysis of images acquired by the system to estimate phenotypes and traits associated with tested plants. The phenotypes extracted were color/spectral, texture, temperature, morphology, and greenness features on a temporal scale. Using two wheat lines with known heat tolerance, the functions of the HTP system were validated. Heat stress tolerance experiments revealed that features such as green leaf area and green normalized difference vegetation index derived from our system showed differences between the control and heat stress treatments, as well as between heat-tolerant and susceptible wheat lines. In another experiment, stripe rust resistance in wheat was assessed. With the HTP system, some potential for detecting qualitative traits, such as disease resistance, was observed, although further validation is needed. In summary, successful development and implementation of an automated system with custom image processing algorithms for HTP in wheat was achieved. Improvement of such systems would further help plant breeders, physiologists, and agronomists to phenotype crops in an efficient, objective, and high-throughput manner. Keywords: Automation, Heat stress, Image processing, Plant breeding, Sensing, Stripe rust.
12
Lyu, Beichen, Stuart D. Smith, Yexiang Xue, Katy M. Rainey, and Keith Cherkauer. "An Efficient Pipeline for Crop Image Extraction and Vegetation Index Derivation Using Unmanned Aerial Systems." Transactions of the ASABE 63, no. 4 (2020): 1133–46. http://dx.doi.org/10.13031/trans.13661.
Full textAbstract:
HighlightsThis study addresses two computational challenges in high-throughput phenotyping: scalability and efficiency.Specifically, we focus on extracting crop images and deriving vegetation indices using unmanned aerial systems.To this end, we outline a data processing pipeline, featuring a crop localization algorithm and trie data structure.We demonstrate the efficacy of our approach by computing large-scale and high-precision vegetation indices in a soybean breeding experiment, where we evaluate soybean growth under water inundation and temporal change.Abstract. In agronomy, high-throughput phenotyping (HTP) can provide key information for agronomists in genomic selection as well as farmers in yield prediction. Recently, HTP using unmanned aerial systems (UAS) has shown advantages in both cost and efficiency. However, scalability and efficiency have not been well studied when processing images in complex contexts, such as using multispectral cameras, and when images are collected during early and late growth stages. These challenges hamper further analysis to quantify phenotypic traits for large-scale and high-precision applications in plant breeding. To solve these challenges, our research team previously built a three-step data processing pipeline, which is highly modular. For this project, we present improvements to the previous pipeline to improve canopy segmentation and crop plot localization, leading to improved accuracy in crop image extraction. Furthermore, we propose a novel workflow based on a trie data structure to compute vegetation indices efficiently and with greater flexibility. For each of our proposed changes, we evaluate the advantages by comparison with previous models in the literature or by comparing processing results using both the original and improved pipelines. The improved pipeline is implemented as two MATLAB programs: Crop Image Extraction version 2 (CIE 2.0) and Vegetation Index Derivation version 1 (VID 1.0). Using CIE 2.0 and VID 1.0, we compute canopy coverage and normalized difference vegetation indices (NDVIs) for a soybean phenotyping experiment. We use canopy coverage to investigate excess water stress and NDVIs to evaluate temporal patterns across the soybean growth stages. Both experimental results compare favorably with previous studies, especially for approximation of soybean reproductive stage. Overall, the proposed methodology and implemented experiments provide a scalable and efficient paradigm for applying HTP with UAS to general plant breeding. Keywords: Data processing pipeline, High-throughput phenotyping, Image processing, Soybean breeding, Unmanned aerial systems, Vegetation indices.
13
Atzei, Davide, Paola Deplano, Emanuele F. Trogu, Francesco Bigoli, Maria Angela Pellinghelli, and Alberto Vacca. "Interaction of diiodine with some tetra-substituted dithiooxamides. Crystal and molecular structure of bis(morpholinothiocarbonyl)bis(diiodine)." Canadian Journal of Chemistry 66, no. 6 (June 1, 1988): 1483–89. http://dx.doi.org/10.1139/v88-239.
Full textAbstract:
The reaction of some tetra-substituted dithiooxamides R2NC(S)C(S)NR2 (R = CH3:Me4dto; R = C2H5:Et4dto; R2N = OC4H8N:Mo2dto) with diiodine has been investigated by spectrophotometric methods in CHCl3. The formation in solution of 1:1 and 1:2 charge-transfer (c.t.) complexes between the reagents has been observed. A new computer program, derived from "SUPERQUAD" (P. Gans, A. Sabatini, and A. Vacca. J. Chem. Soc. Dalton Trans. 1195 (1985)), has been applied to evaluate the formation constants. The 1:2 c.t. complexes have been isolated in the solid state, and an X-ray structure analysis of the [OC4H8NC(S)C(S)NC4H8O]•2I2 compound indicated that the crystals are triclinic, space groups [Formula: see text], with a = 14.659(6), b = 15.111(6), c = 9.317(5) Å, α = 92.29(2), β = 99.71(2), γ = 99.48(2)° and Z = 4. In particular the torsion angle S—C—C—S (≈90°) shows that the conformation of the dithiooxamide is not trans.
14
Marko, M., R. Banerjee, A. Leith, M. King, M. Radermacher, J. Frank, and D. Parsons. "3-D reconstruction from serial thick sections, with multiple-level profiling within stereo pairs, using the albany HVEM's “SSRECN” software." Proceedings, annual meeting, Electron Microscopy Society of America 44 (August 1986): 38–39. http://dx.doi.org/10.1017/s0424820100141937.
Full textAbstract:
We have designed and written a program, SSRECN, for making 3-D reconstructions from contours in parallel planes. In our work with serial thick sections, we find a need to sample the object at multiple levels in depth, and we suggest a means for doing this.SSRECN was written with the biological electron microscopist in mind, and its capabilities cover all common requirements for such work. Additional features are added as special user needs come up. Special care was taken to make it “user friendly”; it is menu-driven, with liberal helps and explanations available on-line, and requires no prior computer experience or reading of documentation. Error traps prevent frustration due to accidental loss of data or program crashes. Its comprehensive and versatile database system provides for handling three-dimensional contour data (including depth connection instructions for reconstruction of branching structures) at all points in the program, both as single contours and as groups (i.e. individual contours of a single organelle and also those of a group of organelles of the same type).
15
Solovyov, Leonid A. "A correction for anisotropic line broadening due to structural defects in powder diffraction structure analysis." Journal of Applied Crystallography 33, no. 2 (April 1, 2000): 338–43. http://dx.doi.org/10.1107/s002188980000114x.
Full textAbstract:
An anisotropic line-broadening correction allowing for the presence of structural defects in crystals is developed for powder diffraction full-profile structure analysis. The approach is based on the statistical consideration of diffraction from a crystal composed of two types of unit cells differing in atomic arrangement and/or content, but not in shape and size. The correction is incorporated into a computer program for powder diffraction structural analysis. The application of this correction in crystal structure investigations oftrans- and β-trans-[Pd(NH3)2X2] (X= Cl, Br, I) overcame the problem of selective anisotropic peak broadening and allowed precise and self-consistent information about the structure and the microstructure of these compounds to be obtained.
16
Umar, Y., J. Tijani, and S. Abdalla. "Density functional theory studies of conformational stabilities and rotational barriers of 2- and 3-thiophenecarboxaldehydes." Журнал структурной химии 57, no. 8 (2016): 1640. http://dx.doi.org/10.26902/jsc20160808.
Full textAbstract:
The molecular structures, conformational stabilities, and infrared vibrational wavenumbers of 2-thiophenecarboxaldehyde and 3-thiophenecarboxaldehyde are computed using Becke-3—Lee—Yang—Parr (B3LYP) with the 6-311++G** basis set. From the computations, cis-2-thiophenecarboxaldehyde is found to be more stable than the transfer conformer with an energy difference of 1.22 kcal/mol, while trans-3-thiophenecarboxaldehyde is found to be more stable than the cis conformer by 0.89 kcal/mol. The computed dipole moments, structural parameters, relative stabilities of the conformers and infrared vibrational wavenumbers of the two molecules coherently support the experimental data in the literature. The normal vibrational wavenumbers are characterized in terms of the potential energy distribution using the VEDA4 program. The effect of solvents on the conformational stability of the molecules in nine different solvents is investigated using the polarizable continuum model.
17
Katsikoudi, Antigoni, Elena Ficulle, Annalisa Cavallini, Gary Sharman, Amelie Guyot, Michele Zagnoni, Brian J. Eastwood, Michael Hutton, and Suchira Bose. "Quantitative propagation of assembled human Tau from Alzheimer's disease brain in microfluidic neuronal cultures." Journal of Biological Chemistry 295, no. 37 (July 22, 2020): 13079–93. http://dx.doi.org/10.1074/jbc.ra120.013325.
Full textAbstract:
Tau aggregation and hyperphosphorylation is a key neuropathological hallmark of Alzheimer's disease (AD), and the temporospatial spread of Tau observed during clinical manifestation suggests that Tau pathology may spread along the axonal network and propagate between synaptically connected neurons. Here, we have developed a cellular model that allows the study of human AD-derived Tau propagation from neuron to neuron using microfluidic devices. We show by using high-content imaging techniques and an in-house developed interactive computer program that human AD-derived Tau seeds rodent Tau that propagates trans-neuronally in a quantifiable manner in a microfluidic culture model. Moreover, we were able to convert this model to a medium-throughput format allowing the user to handle 16 two-chamber devices simultaneously in the footprint of a standard 96-well plate. Furthermore, we show that a small molecule inhibitor of aggregation can block the trans-neuronal transfer of Tau aggregates, suggesting that the system can be used to evaluate mechanisms of Tau transfer and find therapeutic interventions.
18
Bhattacharya, M. "Thermoluminescence recorded in a hyperbolic heating profile." Canadian Journal of Physics 79, no. 9 (September 1, 2001): 1141–47. http://dx.doi.org/10.1139/p01-066.
Full textAbstract:
Thermoluminescence (TL) glow curves corresponding to a hyperbolic heating profile are computed, for the first time, by solving a system of coupled differential equations using the fourth-order RungeKutta method taking into account the presence of thermally disconnected traps. The variations of the peak temperature and the symmetry factor with the change of the fractional-filling ratio have been studied, not only for the TL peaks obtained as a result of the solution of the coupled differential equations but also for TL peaks obeying RandallWilkins and GarlickGibson equations in a hyperbolic heating program. Finally, the validity of the plateau test has also been considered. PACS No.: 78.60Kn
19
Fonseca, L. R. C., A. N. Korotkov, and K. K. Likharev. "SENECA: a New Program for the Analysis of Single-Electron Devices." VLSI Design 6, no. 1-4 (January 1, 1998): 57–60. http://dx.doi.org/10.1155/1998/19218.
Full textAbstract:
We describe a new and efficient method for numerical study of the dynamics and statistics of single-electron systems presenting arbitrary combinations of small tunnel junctions, capacitances, and voltage sources. The method is based on the numerical solution of a master equation describing the time evolution of the probabilities of the electric charge states of the system, with iterative refining of the operational set of states. The method is able to describe very small deviations from the “classical” behavior of a system, due to finite speed of applied signals, thermal activation, and macroscopic quantum tunneling of charge (cotunneling). As an illustration, we briefly study the leakage rate in single-electron traps and the accuracy of several devices (turnstile, pump, and a hybrid circuit) suitable as standards of dc current.
20
Rosado, Luís, Pedro Faria, João Gonçalves, Eduardo Silva, Ana Vasconcelos, Cristiana Braga, João Oliveira, et al. "EyesOnTraps: AI-Powered Mobile-Based Solution for Pest Monitoring in Viticulture." Sustainability 14, no. 15 (August 8, 2022): 9729. http://dx.doi.org/10.3390/su14159729.
Full textAbstract:
Due to the increasingly alarming consequences of climate change, pests are becoming a growing threat to grape quality and viticulture yields. Estimating the quantity and type of treatments to control these diseases is particularly challenging due to the unpredictability of insects’ dynamics and intrinsic difficulties in performing pest monitoring. Conventional pest monitoring programs consist of deploying sticky traps on vineyards, which attract key insects and allow human operators to identify and count them manually. However, this is a time-consuming process that usually requires in-depth taxonomic knowledge. This scenario motivated the development of EyesOnTraps, a novel AI-powered mobile solution for pest monitoring in viticulture. The methodology behind the development of the proposed system merges multidisciplinary research efforts by specialists from different fields, including informatics, electronics, machine learning, computer vision, human-centered design, agronomy and viticulture. This research work resulted in a decision support tool that allows winegrowers and taxonomy specialists to: (i) ensure the adequacy and quality of mobile-acquired sticky trap images; (ii) provide automated detection and counting of key insects; (iii) register local temperature near traps; and (iv) improve and anticipate treatment recommendations for the detected pests. By merging mobile computing and AI, we believe that broader technology acceptance for pest management in viticulture can be achieved via solutions that work on regular sticky traps and avoid the need for proprietary instrumented traps.
21
Branoiu, Gheorghe, and Ibrahim Ramadan. "Rietveld Structure Refinement of the Stilbite Crystals from Deccan Traps (India) Using X-ray Powder Diffraction Data." Revista de Chimie 70, no. 7 (August 15, 2019): 2379–84. http://dx.doi.org/10.37358/rc.19.7.7344.
Full textAbstract:
The crystal structure of a spectacular sample of stilbite from Pune region located in the Deccan Traps (western India) has been refined using X-Ray powder diffraction data and the Rietveld method. The Rietveld refinement was carried out using the computer program Diffracplus TOPAS 4.1. The pseudo-Voigt (pV) profile function was used for the fit of the peaks. The Rietveld refinement of the analyzed sample in the space group C2/m (No.12): a=13.606 �, b=18.260 �, c=11.253 �, b=127.432�, Z=8, confirm the basic stilbite structure. The chemical composition of the stilbite crystals from Pune region (India) was determined by EDX analysis. The paper presents a new set of the unit cell parameters and fractional coordinates that define the stilbite crystal structure. The quality of the sample analyzed was pristine, the sample being collected from an association of apophyllite-stilbite crystals of centimetric dimensions.
22
Sulyma, Adym S., Yuliia O. Filiak, Ulyana V. Kuz, Vitaliy S. Sarancha, Andrii V. Chuzhak, Liliia V. Tverdokhlib, and Maksym P. Fedyniak. "The Effectiveness of Rehabilitation Program After Hybrid Osteosynthesis in Ankle Joint Unstable Injuries." Acta Balneologica 64, no. 6 (2022): 523–28. http://dx.doi.org/10.36740/abal202206105.
Full textAbstract:
Aim: To develop a rehabilitation protocol for patients with the unstable ankle joint injuries by doing comparative analysis between HSEF functional results and the traditional method. Materials and Methods: The study was performed on 61 patients with the unstable ankle trans- or supra-syndesmotic fractures. Patients were divided into two equal groups where I = main and II = control due to the age, distribution and disorders. 10 patients from the group I were operated using HSEF, the other 51 were selected for the traditional osteosynthesis (plate and positioning screw). For the monitoring of osteosynthesis quality was used The Foot and Ankle Disability Index (FADI) scale. Nonparametric statistical analysis was completed using Statistica 13.0 computer software. Results: After application of HSEF method authors of this paper created original rehabilitation protocol. Limitations in the rehabilitation process (e.g., not weightbearing) on 42}3 day in the control group II caused a significant gap in the results of ankle joint functional recovery. On day56}3, the main group I overreached the control group II by 1.5 (p3<0.001). With each FU 1-3 of the main group I, the total sum of points according to FADI (subscale of sports activity) steadily increased by 5, and with FU 3 on the 56}3 day, reached 16 points. Positive quantitative dynamics in scores were the characteristic of patients from both groups (advantage of the group I was insignificant (by 2 points) (p4<0.001)), although none of them reached the normal (32 points) at the final term (FU 4). Conclusion:Provided results proved the effectiveness of the developed rehabilitation protocol. It enhanced patients recovery up to 1-2 weeks.
23
Sheppard, S. C., S. Bittman, J. Tait, S. G. Sommer, and J. Webb. "Sensitivity analysis of alternative model structures for an indicator of ammonia emissions from agriculture." Canadian Journal of Soil Science 87, Special Issue (March 1, 2007): 129–39. http://dx.doi.org/10.4141/s06-062.
Full textAbstract:
Ammonia (NH3) emission from agriculture is an environmental and health concern in many nations, and has trans-border impacts. Direct toxicity, terrestrial eutrophication and production of inhalable aerosols (< 2.5 µm diameter) are the specific concerns. Canada, among other northern hemisphere nations, has computed a national inventory of NH3 emissions, and a new emission inventory estimate is being prepared jointly under the National Agri-Environmental Health Analysis and Reporting Program (NAHARP) and National Agri-Environmental Standards Initiative (NAESI). However, there has been a rapid evolution in the models used, and a concomitant change in the NH3-specific data required. This paper compares several model structures and options using Monte Carlo simulation and sensitivity analysis methods. The results indicate the more recent models, that compute a mass balance of NH3 from excretion to landspreading, have tended to focus uncertainty onto the dietary efficiency of animal N nutrition. After excretion, the total ammoniacal nitrogen (TAN) in the manure contributes to NH3 emissions at each stage as the manure passes from the animal housing to storage and to landspreading. There are many variants of these processes because every farm is different, resulting in diminished sensitivity to any one NH3-loss mechanism after excretion. This finding suggests that although NH3-emission factors, the empirical data at the core of the models, are not well characterised (especially for Canadian conditions), it is at least as important to expend research effort on factors that influence TAN excretion. Results of this paper will also guide development of the NAHARP/NAESI model. Key words: NAHARP, livestock, manure, Fraser Valley, ammonium sulphate, PM2.5
24
Rosas Maximiliano, Miguel, Salome Gonzales Chávez, and Alex Poccomo Coquil. "MAXIMIZACIÓN DE LA EFICIENCIA A CARGAS PARCIALES DE UNA CENTRAL HIDROELECTRICA MULTIGRUPO INTEGRADA AL SISTEMA INTERCONECTADO NACIONAL." Revista Cientifica TECNIA 25, no. 2 (February 23, 2017): 35. http://dx.doi.org/10.21754/tecnia.v25i2.48.
Full textAbstract:
En una Central Hidroeléctrica multigrupo que opera a cargas parciales, la máxima eficiencia de cada grupo y el de la combinación aleatorias de estos, difieren de la eficiencia de diseño de la central a plena carga. Estas centrales están condicionadas a operar a cargas parciales, tanto en épocas de estiaje como en tramos de sobreoferta eléctrica del sistema interconectado nacional. El periodo de estiaje en Perú alcanza a nueve meses del año, situación que implica pérdidas económicas debido a la inadecuada regulación del caudal y elección de grupo, a condiciones de eficiencias por debajo de sus valores óptimos. El objetivo de este trabajo es el desarrollo de un proceso de optimización de la eficiencia de una Central Hidroeléctrica multigrupo, para cualquier nivel de potencia a generar en el programa diario de generación interconectada. Como resultados se obtiene la maximización de la eficiencia y combinación de turbinas-grupo para cada potencia de salida de la central fuera de sus condiciones nominales; asimismo se construye un programa computacional en Matlab que alimenta al sistema automatizado de la central. Su aplicación está permitiendo reducir costos de generación y disponibilidad de la central, a su vez conforma un patrón metodológico de uso en otras centrales hidroeléctricas multigrupo. Palabras clave.- Central hidroeléctrica multigrupo, Cargas parciales, Maximización, Despacho económico, Estiaje, Sistema interconectado nacional.. ABSTRACTIn multigroup hydroelectric plant operating at partial loads, the maximum each group efficiency and the random combination of these, differ from the design efficiency of the plant at full load. These plants are conditioned to operate at partial loads, both in times of drought and periods of oversupply national electric grid. The period of drought in Peru is nine months per year, a situation that involves economic losses due to inadequate flow regulation and group choice efficiencies conditions below their optimum values. The aim of this work is the development optimizing efficiency process of a multigroup hydroelectric power plant, for any level of power generated in the daily interconnected generation program. The results are maximizing turbine efficiency and combined-group for each power output of the plant, outside its nominal conditions, also a computer program is constructed in Matlab to integrate the automated system of hydroelectric power plant. Its application can reduce generation costs and increases plant availability; also forms a methodological pattern of use in other multigroup hydroelectric plants . Keywords.- Multigroup hydroelectric plant, Partial loads, Maximization, Economic dispatch, Time of drought, National grid.
25
Peñaherrera León, Mónica, Fabián Cobos Alvarado, and Tomas J. Campoy Aranda. "Internet en la educación intercultural: cambio de actitudes y valores tras la aplicación de un programa en alumnado de educación primaria." Education in the Knowledge Society (EKS) 12, no. 3 (November 28, 2011): 56–75. http://dx.doi.org/10.14201/eks.8483.
Full textAbstract:
Esta investigación tiene como objetivo evaluar los efectos que el Programa “E-Culturas” ha tenido en alumnos de 6º curso de Educación Primaria. El programa de contenido intercultural está basado en un enfoque constructivista de aprendizaje y el uso de la red internet. Para evaluar los efectos del programa se ha utilizado el método cuasi-experimental a través de un diseño pre-postest, por medio del “Cuestionario de Educación Intercultural E-Culturas”. La aplicación del programa ha producido efectos satisfactorios en relación a la integración, la convivencia, la tolerancia, el mejor conocimiento cultural y el respeto a otras culturas.
26
Pierce, Elyse. "The Danger of Cultural Erasure in Inter-Ethnic, Inter-Religious, Trans-National Rescue During Genocide: A Comparison of the Shoah and the Bosnian Civil War." Volume 4 4, no. 1 (August 1, 2022): 16–28. http://dx.doi.org/10.33929/sherm.2022.vol4.no1.02.
Full textAbstract:
International genocide intervention strategies that involve the extended evacuation and/or displacement of refugees often save the physical lives of would-be victims at the expense of psychological and social trauma and cultural erasure. Through a comparison of the international rescue efforts of the Kindertransport program in Great Britain prior to and during the Second World War and the refugee caravans organized by La Benevolencija in Sarajevo during the Bosnian Civil War, the benefits and dangers of inter-ethnic, inter-religious rescue in times of mass violence are examined, along with how the social dynamics of racialized religious identification influenced the occurrence of these intervention strategies. The implications gleaned from this comparison offer guidance for current and future genocide intervention programs, where great care should be taken, whenever possible, to keep family groups intact and together, provide necessary psychological and social services for refugees, and allow for the continued practice of communal cultural and religious traditions without forced assimilation. The moment of physical rescue is only the initial component of a successful intervention into religio-ethnic violence; to truly prevent the genocidal destruction of a people and culture, those people’s ability to identify with their traditions and maintain their way of life is of equal and vital importance.
27
Rozov, Roman, Vladimir Trezubov, Olga Spitsyna, and Yulia Bistrova. "DIGITAL METHOD OF COMPARATIVE EVALUATION OF THE RIGIDITY BETWEEN THE CUSTOM MADE BY THE AUTHORS IMPLANT IMPRESSION TRAYS AND STOCK IMPLANT IMPRESSION TRAYS WITH REMOVABLE PARTS." Actual problems in dentistry 17, no. 2 (August 12, 2021): 163–68. http://dx.doi.org/10.18481/2077-7566-20-17-2-163-168.
Full textAbstract:
Impression taking procedure from prosthetic area in case of constructing implant supported prostheses is one of the most important steps in the process of patient rehabilitation especially in producing long span structures. Quality of the impression could affect the precision and passive fit of the prosthesis to the implants therefore the overall quality of the work.
Obtaining digital impressions of edentulous jaws with a different number of implants using intraoral devices is still an unresolved problem in full. The ergonomics of the process of obtaining an impression is not easy due to the need to place both scan abutments in the oral cavity and manipulate the working part of the intraoral scanner around them. The accuracy of digital impressions obtained from edentulous jaws for obtaining full-arch implant supported prostheses does not exceed that when obtaining a classic impression, and according to a number of researchers, it is even lower.
The aim of this study was to construct implant impression convertible trays with increased to the optimum levels of rigidity, with simple disassemble process and having an easy access to the adapters, and also to digitally compare the rigidity of the author’s impression trays.
The method of assessment was digital technology of analysing structural resistance and inherent stresses and deformations using SolidWorks software. We performed analysis of the resistance of the structure to external loads.
We have developed and created the customised copyrighted versions of the upper and lower impression trays made of rigid titanium alloy by 3D printing using DMLM technology on a Concept Laser device made of titanium Ti6-Al4-V. Modeling was carried out in the Mimics Medical 21 program (Materialize, Germany) along the contours on the data of cone-beam computed tomography.
Performed digital tests reveal the underlying advantages of the designed by authors impression trays.
28
Malekani, Javad, Prasad K. D. V. Yarlagadda, Beat Schmutz, Yuan Tong Gu, and Michael Schuetz. "How to Increase the Accuracy of Analysis and Reduce the Computational Time in ANSYS in the Case of Deformation Study of Orthopedic Bone Plates." Advanced Materials Research 834-836 (October 2013): 1592–600. http://dx.doi.org/10.4028/www.scientific.net/amr.834-836.1592.
Full textAbstract:
Currently, finite element analyses are usually done by means of commercial software tools. Accuracy of analysis and computational time are two important factors in efficiency of these tools. This paper studies the effective parameters in computational time and accuracy of finite element analyses performed by ANSYS and provides the guidelines for the users of this software whenever they us this software for study on deformation of orthopedic bone plates or study on similar cases. It is not a fundamental scientific study and only shares the findings of the authors about structural analysis by means of ANSYS workbench. It gives an idea to the readers about improving the performance of the software and avoiding the traps. The solutions provided in this paper are not the only possible solutions of the problems and in similar cases there are other solutions which are not given in this paper. The parameters of solution method, material model, geometric model, mesh configuration, number of the analysis steps, program controlled parameters and computer settings are discussed through thoroughly in this paper.
29
d’Alessandro, Vincenzo, Lorenzo Codecasa, Antonio Pio Catalano, and Ciro Scognamillo. "Circuit-Based Electrothermal Simulation of Multicellular SiC Power MOSFETs Using FANTASTIC." Energies 13, no. 17 (September 3, 2020): 4563. http://dx.doi.org/10.3390/en13174563.
Full textAbstract:
This paper discusses the benefits of an advanced highly-efficient approach to static and dynamic electrothermal simulations of multicellular silicon carbide (SiC) power MOSFETs. The strategy is based on a fully circuital representation of the device, which is discretized into an assigned number of individual cells, high enough to analyze temperature and current nonuniformities over the active area. The cells are described with subcircuits implementing a simple transistor model that accounts for the utmost influence of the traps at the SiC/SiO2 interface. The power-temperature feedback is emulated with an equivalent network corresponding to a compact thermal model automatically generated by the FANTASTIC tool from an accurate 3D mesh of the component under test. The resulting macrocircuit can be solved by any SPICE-like simulation program with low computational burden and rare occurrence of convergence issues.
30
Umar, Yunusa, Nedal Abu-Thabit, Paul Jerabek, and Ponnadurai Ramasami. "Experimental FTIR and theoretical investigation of the molecular structure and vibrational spectra of acetanilide using DFT and dispersion correction to DFT." Journal of Theoretical and Computational Chemistry 18, no. 02 (March 2019): 1950009. http://dx.doi.org/10.1142/s0219633619500093.
Full textAbstract:
The FTIR spectrum of acetanilide (ACN) is recorded and analyzed. The optimized molecular structures, harmonic vibrational wavenumbers and corresponding vibrational assignments of the ACN are computationally examined by using the B3LYP density functional theory method together with the standard 6-311[Formula: see text]G([Formula: see text],[Formula: see text]) basis set. From the calculations, the ACN is predicted to exist predominantly in trans configuration with the relative energy, rotational barrier, and population of 2.8[Formula: see text]kcal/mol, 14.8[Formula: see text]kcal/mol, and 99.5%, respectively. The optimized structure shows that the amide group (CO–NH) of trans-ACN adopts a planar peptide-like conformation. The effect of the incorporation of dispersion correction to the B3LYP on the calculated equilibrium structure and vibrational spectra of ACN is investigated. The highest occupied and the lowest unoccupied molecular orbitals, IR intensities and molecular electrostatic potential results are reported. In addition, reliable vibrational assignments have been made on the basis of Potential Energy Distribution (PED) using VEDA4 program. Simulated IR spectrum are compared with the experimental FTIR and FT-Raman spectra. Energy decomposition analysis (EDA) revealed that Pauli repulsion is responsible for the increased stability of the trans over the cis isomer.
31
Barasa Simiyu, Japheth, Ruth Imbuye, Susan Wandukusi, Patrick Barasa, David Loeseps Risper Konzolo, John Masinde, Stephen Mukubuyi, Patrick Olutwati, and Florance Chemayiek. "THE EFFECTS OF WESTERN CHRISTIANITY AND AFRICAN TRADITIONAL RELIGION ON CULTURAL AND MORAL DEVELOPMENT IN TRANS NZOIA COUNTY, KENYA." International Journal of Advanced Research 8, no. 11 (November 30, 2020): 1169–76. http://dx.doi.org/10.21474/ijar01/12114.
Full textAbstract:
The purpose of this study was to establish effects of Western Christianity and African Traditional Religion on moral and cultural development of the people of Trans Nzoia County. Morals and core values play a very important role in the upbringing of the youth in any given community in any given Geographical part on this planet. The study will be guided by the following objectives: Establish effects of Christianity on moral development, Determine effects of African Traditional Religion on moral development, Compare and contrast effects of moral development of Western Christianity and African Traditional Religion and to determine the role played by morals and core values in both Christianity and African Traditional Religion. Mixed Research method combined both qualitative and quantitative was employed in the study to unearth the hidden truth underlying in the study. The target population was 500 people which gave a sample size of 50Bishops and Pastors of 50 Churches. The researcher employed purposive and simple random sampling techniques. The researcher used two guiding theories in the study: the theory of Atonement on the Christian part and the theory of dual allegiance on the part of African Traditional Religion. Data was collected by use of Questionnaires and Interview schedules. The raw data was analyzed and descriptively availed for facilitation of research objectives and research questions. Computer program SPSS was employed to give the final accurate and precise results of Research findings. The findings indicate that the intrusion of foreign cultures in Trans Nzoia County has helped water down the quality of African morals on one part and the other part there is improvement on cultural and core values of the people of Trans Nzoia County. The conclusion on the same is that since communication and mobility has been so much developed in these resent times, it is easy for people from different parts of the world to meet and interact at any time at any given Geographical zone on the planet. The study recommends that the citizens of Trans Nzoia should be careful enough in considering the kind of morals to be applied in this county since the county is an Agricultural hub where people from different parts of the Earth converge either for commercial purposes or for learning Agri-business techniques.
32
Semenov, Vyacheslav, Igor Bessonov, Ekaterina Zinovieva, and Elizaveta Mednikova. "Insulation systems for structures on pile supports." E3S Web of Conferences 263 (2021): 01010. http://dx.doi.org/10.1051/e3sconf/202126301010.
Full textAbstract:
Construction on problem soils or in permafrost conditions involves using of pile foundations with a ventilated space under the floor structure. In this case, additional thermal insulation is required under the first-floor structure (above the ventilated space). The aim of research was to develop insulation systems for buildings on pile foundations for different climatic zones, including conditions of the arctic region and other regions with a predominance of ever-frozen ground. With the help of the THERM computer program, the conditions of bidimensional heat interchange in the enclosing structures of a building with pile foundation were simulated. The resulting models were analysed in terms of the thermophysical characteristics of the structures. As a result, the optimal version of the insulation system was chosen, effective both in the climatic conditions of the midland and in the especially cold conditions of Yakutia and Trans-Polar region (The Subarctic). This system included insulation with mineral wool slabs along the facade walls, with extruded foamed polystyrene along the basement part and the floor structure, and with rolled foamed polyethylene (with the formation of a seamless insulation shell) along the ventilated space under the floor structure and above, on top of insulation boards.
33
LIU, MIN HSIEN, and GEN FA ZHENG. "COMPUTATIONAL STUDY OF UNIMOLECULAR DECOMPOSITION MECHANISM OF RDX EXPLOSIVE." Journal of Theoretical and Computational Chemistry 06, no. 02 (June 2007): 341–51. http://dx.doi.org/10.1142/s0219633607002952.
Full textAbstract:
This study investigated the RDX (1,3,5-Trinitro-1,3,5-triazine) molecule to elucidate its possible decomposition species and the corresponding energies by performing the density-functional theory (DFT) calculations. Reasonable decomposition mechanisms are proposed based on the bond energy calculated using the differential overlap (INDO) program, which yields the weakest bonding site for reference and determines the site of easy cleavage. Computational results indicate that the activation energy of direct cis-form HONO elimination is lower than that of direct trans-form HONO elimination and that of a two-stage elimination of two forms of HONO ( N – N bond fission combined with C – H bond breaking) in the initial decomposition step, which are 213.9 kJ/mol and 93.8–101.8 kJ/mol, respectively. Two possible pathways are proposed; (1) N – N bond homolytic cleavage followed by elimination of cis-form HONO, and (2) N – N bond homolytic cleavage followed by elimination of trans-form HONO.
34
И.А., Керимов,. "Modeling the gravitational field fault systems and fracture zones." Геология и геофизика Юга России, no. 4 (December 21, 2022): 59–71. http://dx.doi.org/10.46698/vnc.2022.44.93.005.
Full textAbstract:
Актуальность работы. Разработка новых и совершенствование существующих методов интерпретации геофизических данных с целью прогнозирования неструктурных ловушек нефти и газа, обусловленных разломно-блоковой тектоникой, является весьма актуальной задачей многих нефтегазоносных регионов, в т.ч. и Предкавказья. Цель работы. Решение прямой задачи гравиметрии для геолого-гравиметрических моделей, представляющих собой систему разноориентированных линейных блоков и зон повышенной трещиноватости. Определение оптимальных методов трансформации исходного гравиметрического поля и морфометрического анализа рельефа для выделения систем разломов и линейных зон повышенной трещиноватости для геологических условий Предкавказья. Методы исследования. Создание геолого-гравиметрических моделей разломно-блоковой среды, соответствующих разломно-блоковой структуре Терско-Сунженской антиклинальной зоны. Разработка алгоритмов и программ расчета поля силы тяжести и ее производных, основанные на методах В.Н. Страхова решения прямых задач гравиметрии для элементов полей от типовых аппроксимирующих тел. Тестирование компьютерных программ и апробирование на модельных примерах. Обработка реальных гравиметрических данных с использованием компьютерных программ трансформации поля силы тяжести на основе метода F-аппроксимации. Построение карт вектора горизонтального градиента и третьей вертикальной производной силы тяжести, сопоставление результатов моделирования и фактических геолого-гравиметрических данных, определение признаков трассирования границ разломов и зон повышенной трещиноватости на картах трансформант гравитационного поля и уклона рельефа дневной поверхности. Результаты исследования. Созданы типовые геолого-плотностные модели для характерных структур разломно-блокового характера Терско-Сунженской антиклинальной зоны. Разработаны алгоритм и компьютерная программа вычисления элементов аномального гравитационного поля для системы разломов различной ориентировки линейных зон трещиноватости, основанные на идеях решения прямых задач гравиметрии и магнитометрии для элементов полей от типовых аппроксимирующих тел В.Н. Страхова. Выполнен расчет аномального гравитационного поля для различного типа моделей. Определены критерии выделения разломов и зон трещиноватости на морфометрических картах и картах высших производных гравитационного поля. Relevance. The development of new and improvement of existing methods for interpreting geophysical data in order to predict non-structural oil and gas traps caused by fault-block tectonics is a very urgent task for many oil and gas regions, including Ciscaucasia. Aim. Solution of the direct problem of gravimetry for geological and gravimetric models, which are a system of differently oriented linear blocks and zones of increased fracturing. Determination of optimal methods for transforming the initial gravimetric field and morphometric analysis of the relief to identify fault systems and linear zones of increased fracturing for the geological conditions of Ciscaucasia. Methods. Creation of geological and gravimetric models of the fault-block environment, corresponding to the fault-block structure of the Terek-Sunzha anticline zone. Development of algorithms and programs for calculating the gravity field and its derivatives, based on V.Strakhovmethods for solving direct problems of gravimetry for field elements from typical approximating bodies. Testing of computer programs and approbation on model examples. Processing of real gravimetric data using computer programs for the transformation of the gravity field based on the F-approximation method. Building maps of the horizontal gradient vector and the third vertical derivative of gravity, comparing the results of modeling and actual geological and gravimetric data, determining signs of tracing fault boundaries and zones of increased fracturing on maps of the gravity field transforms and the slope of the day surface topography. Results. Typical geological and density models have been created for the characteristic structures of the fault-block nature of the Terek-Sunzhensky anticline zone. An algorithm and a computer program for calculating the elements of an anomalous gravitational field for a system of faults of various orientations of linear zones of fracture, based on the ideas of solving direct problems of gravimetry and magnetometry for elements of fields from typical approximating bodies V. Strakhov. The anomalous gravitational field was calculated for various types of models. The criteria for identifying faults and fracture zones on morphometric maps and maps of higher derivatives of the gravitational field are determined.
35
Hudak, Katelin, Sarah Gonzalez-Nahm, Tiange Liu, and Sara Benjamin-Neelon. "Food Security and Diet Quality in Postpartum Women." Current Developments in Nutrition 4, Supplement_2 (May 29, 2020): 1007. http://dx.doi.org/10.1093/cdn/nzaa054_079.
Full textAbstract:
Abstract Objectives Food insecurity has been associated with poor diet-related health in women, but few prior studies focused on the postpartum period—a particularly important time for the health of women and children. We examined associations between food security and maternal diet quality in a racially diverse cohort of postpartum women. We further assessed whether participation in the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) or the Supplemental Nutrition Assistance Program (SNAP) modified this potential relation. Methods We examined 363 women in central North Carolina from the Nurture study (2013–2017). We computed maternal food security status using the 10-item USDA food security survey module at 3 months postpartum. We calculated Alternate Healthy Eating Index-2010 (AHEI) scores (range of 0 to 100) and component scores from food frequency questionnaires completed at 6 months postpartum. We conducted multiple linear regression examining associations between food security status (high, marginal, low, and very low) and AHEI, adjusting for age, race, education, marital status, number of children, breastfeeding, and total calories. We assessed WIC and SNAP as potential effect modifiers. Results Among women, 64.4% were Black and had a mean (standard deviation, SD) age of 28.2 (5.9) years. Nearly half (45.7%) had a high school diploma or less. Of women, 21.3% had low or very low food security. Mean (SD) AHEI score was 41.5 (11.3). We found no evidence of an interaction between food security and WIC or SNAP so we adjusted for both. In adjusted models, food security status at 3 months postpartum was not associated with AHEI (data not shown) at 6 months postpartum. However, low (ß: −0.64; 95% CI: −1.15, −0.13; P = 0.01) and very low (ß: −0.57; 95% CI: −1.02, −0.13; P = 0.01) food security were associated with a less healthy score for trans fat intake. Conclusions Food security status was not associated with overall diet quality in postpartum women. However, food insecure women showed higher consumption of trans fats. Future research should evaluate interventions to alleviate food insecurity in postpartum women, and assess whether these interventions lead to improved diet quality. Funding Sources National Institutes of Health.
36
Zhukov, Aleksey, Igor Bessonov, Andrey Medvedev, Ekaterina Zinovieva, and Elizaveta Mednikova. "Insulation systems for structures on pile supports." E3S Web of Conferences 258 (2021): 09088. http://dx.doi.org/10.1051/e3sconf/202125809088.
Full textAbstract:
Construction on problem soils or in permafrost conditions involves using of pile foundations with a ventilated space under the floor structure. In this case, additional thermal insulation is required under the first-floor structure (above the ventilated space). This problem is com-pounded by construction in cold regions. The goal of research was to develop insulation systems for buildings on pile foundations for different climatic zones, including conditions of the arctic region and other regions with a predominance of ever-frozen ground. With the help of the THERM computer program, the conditions of bidimensional heat interchange in the enclosing structures of a building with pile foundation were simulated. The construction of such buildings is practiced on problem soils. The resulting models were analyzed in terms of the thermophysical characteristics of the structures. As a result, the optimal version of the insulation system was chosen, effective both in the climatic conditions of the midland and in the especially cold conditions of Yakutia and Trans-Polar region (The Subarctic). This system included insulation with mineral wool slabs along the facade walls, with extruded polystyrene (XPS) foams along the basement part and the floor structure, and with roll polyethylene (PE) foams (with the formation of a seamless insulation shell) along the ventilated space under the floor structure and above, on top of insulation boards.
37
Jadallah, Abdullateef A., Mohammed K. Alsaadi, and Saeef A. Hussien. "The hybrid (PVT) double-pass system with a mixed-mode solar dryer for drying banana." Engineering and Technology Journal 38, no. 8A (August 25, 2020): 1214–25. http://dx.doi.org/10.30684/etj.v38i8a.535.
Full textAbstract:
In this paper, the hybrid PVT double pass system with a mixed-mode solar dryer type under forced convection has been designed, fabricated and installed for drying crops. The dryer was tried by drying 300 grams of banana slices in the air temperature of dryer range from 43.2 to 60.2°C. The initial moisture rate of banana was about 78% and the most dropped in moisture content was from 78% to 33% after 8 hours of the drying process. The banana slices are distributed in two identical trays and it was noticed that the most and least decreasing in weight of banana samples was from 150 to 48 gram and from 150 to 55 gram in lower and upper tray respectively, when the mass flow rate as 0.031 and 0.017 kg/s, which means that the high reduction was 68% of weight banana at a high mass flow rate of airflow. The critical parameter such as temperature distribution of the PVT with dryer room, useful heat gain, and thermal efficiency are computed by using the MATLAB 2015b program built for this purpose. The optimum useful heat gain and thermal efficiency were reached 423.7 and 52.98% respectively when the solar radiation 1190 and the mass flow rate of 0.031 kg/s.
38
Thomas, W., S. Ward, E. O'Rourke, M. Werkmeister, L. Bentley, and M. Premaratne. "418 An Australian Experience Of Starting A Program To Use Computed Tomography Assessment Of The Left Atrial Appendage To Avoid Trans-oesophageal Echocardiography In The Covid-19 Pandemic." Journal of Cardiovascular Computed Tomography 16, no. 4 (July 2022): S9. http://dx.doi.org/10.1016/j.jcct.2022.06.023.
Full text
39
Andrei, Liliana, and Oana Luca. "Open Tools for Analysis of Elements Related to Public Transport Performance. Case Study: Tram Network in Bucharest." Applied Sciences 11, no. 21 (November 3, 2021): 10346. http://dx.doi.org/10.3390/app112110346.
Full textAbstract:
The present paper aims to be useful for public transport operators and municipalities, as it should enable them to make decisions and to optimize public transport schedules during peak hours. In this study, we outline the data and the means necessary for the creation and use of a specific database for a dynamic spatial analysis of the public transportation network. This will facilitate the analysis of public transport vehicle operating programs and the simulation of new transport programs using open-source software. This paper delivers the first digital map of the public transport in Bucharest. Using the QGIS software and the PostgresSQL database, (i) we analyzed the accessibility of public transport stops for residential areas (5-min isochrones, corresponding to walking distances of 400 m), and (ii) we determined the correlation of transport vehicle programs with the existing transport network to optimize the headway of vehicles. These two elements were considered for the analysis of public transport performance. The research study was based on the tram network in Bucharest, but it can be easily upscaled for the entire public transport network and may be replicated in other large cities.
40
Гаджиєв Едуард Назімович. "ДОСЛІДЖЕННЯ ДИСПЕРСНОГО СКЛАДУ ПИЛУ ПРИ ВИРОБНИЦТВІ ТЕПЛОІЗОЛЯЦІЙНИХ МАТЕРІАЛІВ." World Science 1, no. 2(42) (February 28, 2019): 18–23. http://dx.doi.org/10.31435/rsglobal_ws/28022019/6348.
Full textAbstract:
The problem of air pollution with environmentally hazardous dust with a particle size of up to 10 microns at plants for the production of thermal insulation materials is considered. The purpose of this work is to study the dispersed composition of dust in the production of insulation materials (such as mineral wool), and to determine the effectiveness of the existing gas cleaning equipment, which traps pollutants. The dispersed composition of the dust generated at the plant for the production of thermal insulation materials, and the dispersed composition of the dust collected by the dust-cleaning equipment was investigated. Experimentally and with the use of computer programs, it has been established that the efficiency of extracting fine dust from dust- cleaning equipment does not exceed 78%. It is established that the dust of mineral wool entering the aspiration system is dominated by particles with a size from 2.5 microns to 25 microns. Dust with a SiO2 content of up to 70%, which is released during unloading and transportation of raw materials (dolomite, basalt), enters the atmospheric air without purification. At the same time, particles with a size of up to 60 microns and up to 72 microns dominate in atmospheric air, respectively. The main characteristics of the dust necessary for the objective selection of dust-cleaning equipment are determined.
41
Briu, Lina-Marie, Chrystelle Maric, and Jean-Charles Cadoret. "Replication Stress, Genomic Instability, and Replication Timing: A Complex Relationship." International Journal of Molecular Sciences 22, no. 9 (April 30, 2021): 4764. http://dx.doi.org/10.3390/ijms22094764.
Full textAbstract:
The replication-timing program constitutes a key element of the organization and coordination of numerous nuclear processes in eukaryotes. This program is established at a crucial moment in the cell cycle and occurs simultaneously with the organization of the genome, thus indicating the vital significance of this process. With recent technological achievements of high-throughput approaches, a very strong link has been confirmed between replication timing, transcriptional activity, the epigenetic and mutational landscape, and the 3D organization of the genome. There is also a clear relationship between replication stress, replication timing, and genomic instability, but the extent to which they are mutually linked to each other is unclear. Recent evidence has shown that replication timing is affected in cancer cells, although the cause and consequence of this effect remain unknown. However, in-depth studies remain to be performed to characterize the molecular mechanisms of replication-timing regulation and clearly identify different cis- and trans-acting factors. The results of these studies will potentially facilitate the discovery of new therapeutic pathways, particularly for personalized medicine, or new biomarkers. This review focuses on the complex relationship between replication timing, replication stress, and genomic instability.
42
Petrini, Daniel Gustavo Pellacani, Gabriel Vansuita Valente, Carlos Shimizu, Rosimeire Aparecida Roela, Gabriel Miranda de Araújo, Tatiana Cardoso de Mello Tucunduva, Maria A. A. Koike Folgueira, and Hae Yong Kim. "Evaluation of an AI system for breast cancer screening in mammograms of young women." Journal of Clinical Oncology 38, no. 15_suppl (May 20, 2020): e14068-e14068. http://dx.doi.org/10.1200/jco.2020.38.15_suppl.e14068.
Full textAbstract:
e14068 Background: The interpretation of the mammography is challenging, especially in young women, who have dense breasts. Artificial intelligence (AI) promises to improve breast cancer detection; however these systems should be tested on different datasets. Our aim is to evaluate the performance of a publicly available deep convolutional neural network, developed by Wu et al. (IEEE Trans. Med. Imaging, 2019), applied to mammograms of young women. Methods: The test dataset consisted of mammograms obtained on a single occasion from 135 young women (up to 40 years old) on a Siemens mammography system. Each exam consisted of 4 full-field digital mammography images and had two labels (left malignant and right malignant). Mammograms were analyzed by a single mammography trained radiologist, using BI-RADS reporting tool. Among 270 labels, 170 were malignant and 100 were non-malignant. We used the program developed by Wu et al. that, according to the authors, presents AUC of 0.895 for the general population. As a preliminary test, we ran this program in a publicly available dataset named INbreast and obtained AUC of 0.8708, very close to the result reported by the authors. Results: We applied the program to our dataset of young women and obtained AUC of 0.876. We computed its standard error, obtaining 0.0290. At equal error rate point of the ROC curve, specificity and sensitivity are both 0.774. With this result we conclude that, at least for our dataset, cancer detection in young women is not substantially more difficult than in general population for an AI system. We fine-tuned the weights of the original network to the population of young women using transfer learning and obtained a slight improvement in AUC: 0.9018±0.0528, where the mean and the standard error were obtained using 5-fold cross validation. As the improvement was small and the standard errors are large, we would have to test on a larger test set to ensure that the observed improvement is real. Conclusions: We conclude, based on the experimental data, that there is no substantial degradation in accuracy when a mammogram screening program for general population is used for young women. We also conclude that it seems to be possible to obtain a slight improvement in accuracy by fine-tuning the network for the population of young women.
43
Pitolli, Consuelo, Alberto Marini, Claudio Sette, and Vittoria Pagliarini. "Non-Canonical Splicing and Its Implications in Brain Physiology and Cancer." International Journal of Molecular Sciences 23, no. 5 (March 4, 2022): 2811. http://dx.doi.org/10.3390/ijms23052811.
Full textAbstract:
The advance of experimental and computational techniques has allowed us to highlight the existence of numerous different mechanisms of RNA maturation, which have been so far unknown. Besides canonical splicing, consisting of the removal of introns from pre-mRNA molecules, non-canonical splicing events may occur to further increase the regulatory and coding potential of the human genome. Among these, splicing of microexons, recursive splicing and biogenesis of circular and chimeric RNAs through back-splicing and trans-splicing processes, respectively, all contribute to expanding the repertoire of RNA transcripts with newly acquired regulatory functions. Interestingly, these non-canonical splicing events seem to occur more frequently in the central nervous system, affecting neuronal development and differentiation programs with important implications on brain physiology. Coherently, dysregulation of non-canonical RNA processing events is associated with brain disorders, including brain tumours. Herein, we summarize the current knowledge on molecular and regulatory mechanisms underlying canonical and non-canonical splicing events with particular emphasis on cis-acting elements and trans-acting factors that all together orchestrate splicing catalysis reactions and decisions. Lastly, we review the impact of non-canonical splicing on brain physiology and pathology and how unconventional splicing mechanisms may be targeted or exploited for novel therapeutic strategies in cancer.
44
Onzago, R. O., S. G. Kiama, J. M. Mbaria, D. W. Gakuya, and J. G. Nduhiu. "Evaluation of antimicrobial activity and toxicity of Vernonia hymenolepis (A. Rich) traditionally used for toothache in Kenya." Journal of Phytopharmacology 3, no. 1 (January 25, 2014): 22–28. http://dx.doi.org/10.31254/phyto.2014.3104.
Full textAbstract:
Aim: The main aim of the study was to ascertain the antimicrobial properties and safety of Vernonia hymenolepis leaves to validate its use in treatment of toothache. Materials and Methods: The Leaves were collected from Trans Nzoia County, shade dried, ground and both organic and water extraction done. Minimum inhibitory concentration against Staphylococcus aureus ATCC 25923, Bacillus cereus ATCC 11778, Pseudomonas aeruginosa ATCC 27853, Escherichia coli ATCC 25922 and Candida albicans was done. Cytotoxicity was done using Brine Shrimp lethality test and lethal concentration (LC50) determined using Finney computer program. The Oral Acute Toxicity Testing (ATC method) was performed as per Organization for economic co-operation and development (OECD) guideline. Result and Discussion: The results showed that the aqueous extract had an inhibitory activity against Staphylococcus aureus and had no significant effect on Pseudomonas aeruginosa, Escherichia coli, Bacillus cereus and Candida albicans at concentration of 400 mg/ml. The organic extract had inhibitory effect against Staphylococcus aureus at a dose of 100 mg/ml and against Pseudomonas aeruginosa and Escherichia coli both at a dose of 400 mg/ ml, Bacillus cereus at a dose of 200 mg/ml and Candida albicans at 50 mg/ml. This study has shown that the plant extracts has a moderate Cytotoxicity with the LC50 (μg /ml) of 491.8 (μg /ml) and 481.7 (μg /ml) for water and organic extract respectively. Acute oral toxicity ATC method showed that the plant extracts in both preparations were not toxic even at a high dose of 2000 mg/kg. Conclusion: It’s concluded that Vernonia hymenolepis possesses antimicrobial activity and is not toxic.
45
González, Luis Roberto Vega, and Crescencio García Segundo. "Building Productive Collaborations: Creation of A Technological Research and Development Unit (UIDT) of the ICAT in the General Hospital of Mexico." Business and Management Studies 5, no. 1 (March 26, 2019): 76. http://dx.doi.org/10.11114/bms.v5i1.4177.
Full textAbstract:
Nearly seven years after the signing of the Collaboration Agreement for the establishment of a Research and Technological Development Unit (UIDT, from Spanish) of the Applied Sciences and Technology Institute (ICAT, from Spanish), previously Applied Sciences and Technological Development Center (ICAT, from Spanish) of the National Autonomous University of Mexico (UNAM, from Spanish) within the General Hospital of Mexico “Eduardo Liceaga” (HGMEL, from Spanish), in this article we propose that there have been diverse human and organizational factors that allowed a smooth and nice birth of the institution and it seems there are good medium term consolidation perspectives. In a first exploration the UIDT has favored the processes of interchange of information and interdisciplinary communication between physicians and specialists of the health sector with the UNAM’s physicists and engineers to reach agreements for the development of R&D trans-disciplinary projects with high social impact potential. Through the results that are observed up to now, we note that the joint work between the parties has led to the development of different projects whose protocols have been approved by the corresponding medical, ethical and academic committees. Besides the conventional academic results there are emerging some specific technological results in the fields of medical devices, computer programs and a pair of technological transfers very promising in terms of the wide number of patients that will use them, as the cranial prostheses case or a hepatic pre-diagnostics auxiliary software method. This paper reviews various relevant organizational aspects resulting from the establishment of the UIDT and the lessons learned during the process.
46
Oliskevych, M., I. Taran, T. Volkova, and I. Klymenko. "Simulation of cargo delivery by road carrier: case study of the transportation company." Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, no. 2 (April 30, 2022): 118–23. http://dx.doi.org/10.33271/nvngu/2022-2/118.
Full textAbstract:
Purpose. To develop a method of simulation of the process of execution of random orders, which would allow substantiating a set of decisions of the transport company Trans-Service Ltd. The decisions concern the use of their own rolling stock, or the involvement of leased vehicles, as well as the rational sequence of orders. Methodology. A simulation model of transport cycles with discrete time is developed. The smallest indivisible duration of a cycle is one working shift. The incoming flow of orders is reflected by the random coordinates of the point of departure and destination of goods. The coordinates of potential orders are formed by a random number generator. Each order is set with its characteristics, which include: point of departure and delivery point, delivery volume, average delivery time, group size, time window. At each step of route planning, a set of orders is known, which are characterized by their compatibility. Rules for selecting orders and distributing them among existing vehicles have been developed. An algorithm and a computer program for simulation have been developed. Findings. Simulation was performed for 30 calendar days, when incoming order flows are stationary. The number of simulation steps is appropriate. The simulation was performed with 20 repetitions. The results are presented by the average value of repetitions. The dependences of the number of orders received, executed, and rejected by the carrier, as well as the number of their own vehicles used by the enterprise are obtained. We also received the number of orders that are not fulfilled by Companys own transport, but are accepted for execution with the help of leased fleet. The allowable order compatibility ratio varied for each series of experiments. The corresponding time indicators of cooperation under conditions of different intensity of the input flow were obtained. To perform simulation experiments with the initial data, which were observed in the transport company Trans-Service Ltd, Ukraine, an array of initial data was formed. Originality. For the first time, an indicator of organizational and technological compatibility of orders was used to select orders to be serviced by the transport company during simulation, which made it possible to select orders from the stochastic flow and form a rational sequence of their execution. Practical value. The obtained results are useful in developing a freight plan based on the data obtained on freight orders and the status and capabilities of partners.
47
Ziyatdinov, N. N., I. I. Emelyanov, A. A. Ryzhova, and P. S. Chernakov. "Algorithm and software for the optimal technological design of a system of simple distillation columns." Fine Chemical Technologies 16, no. 5 (November 28, 2021): 379–89. http://dx.doi.org/10.32362/2410-6593-2021-16-5-379-389.
Full textAbstract:
Objectives. The formalized problem of the optimal design of distillation column systems belongs to the class of mixed integer nonlinear program problems. Discrete search variables are the number of trays in the rectifying and stripping sections of columns, whereas the continuous ones are the operating modes of columns. This study aimed to develop an algorithm and a software package for the optimal technological design of a system of simple distillation columns based on the criterion of total reduced capital and energy costs using rigorous mathematical distillation models.Methods. The solution to this problem is based on the branch and bound method. A computer model of the distillation column system was developed in the environment of the Aspen Hysys software package. The Inside–Out module was used as the distillation model. The developed algorithm is implemented in the software environment of the Matlab mathematical package. To solve the conditional optimization problem, a sequential quadratic programming method-based model was used. The interaction between software add-ins in Matlab and Aspen Hysys is implemented using a Component Object Model interface.Results. Approaches to obtain the lower and upper bounds of the optimality criterion and the branching method for the implementation of the branch and bound method have been developed. In addition, an algorithm for the optimal design of a distillation column of a given topology based on the branch and bound method has been developed. Furthermore, using Matlab, a software package that implements the developed algorithm and is integrated with the universal modeling software AspenHysys has been created.Conclusions. An algorithm and a software package have been developed and implemented that allows automating the design process of distillation column systems and integration with advanced mathematical programming packages, respectively. The performance of the algorithm and software package has been evaluated using the optimal design of the debutanization column as an example.
48
Mori, Takahiro. "(Invited, Digital Presentation) Silicon Compatible Quantum Computers: Challenges in Devices, Integration, and Circuits." ECS Meeting Abstracts MA2022-01, no. 29 (July 7, 2022): 1297. http://dx.doi.org/10.1149/ma2022-01291297mtgabs.
Full textAbstract:
Quantum computers have been attractive because they could realize large-scale and highly complicated calculations that conventional computers cannot solve within a finite time. The large-scale integration of qubits, which are the building block of quantum computers, is required to realize their practical application. Indeed, fault-tolerant quantum computers require the integration of one million qubits. Therefore, silicon qubits is a high-profile candidate because they have advanced process and miniaturization technologies developed with VLSI. In addition, silicon qubits are advantageous in operation temperature. Superconductor qubits operate at the cryogenic temperature at around a few tens mK; in contrast, the operation principle of silicon qubits can operate at a much higher temperature over 1 K. The high-temperature operation can realize quantum computers with small and high-power refrigerators; therefore, we can expect desktop quantum computers instead of ongoing supercomputer-size ones. We must promote integration technology development for silicon qubits; however, the silicon qubit research was mainly in the physics field. Then, nowadays, the integration technology development is accelerated in the world. The challenges are in all conventional research fields: devices, integration, and circuits. We must re-develop the silicon technologies for quantum. For example, on the device design, now we do not have a good tool to design the qubits like TCAD; therefore, we must re-develop the TCAD technologies for quantum [1]. Actually, this is the starting point of our recent research activities; we are going to develop a quantum device simulator, clarify the requirements on the fabrication process of silicon qubits, and propose new technologies to reduce the variability to realize large-scale integration [2]. As for the integration, the quantum calculation circuits require several integrated items: qubits, qubit couplers, micro-magnets, and readout systems. The situation is quite different from the conventional VLSI case for which only the transistors should be integrated. Therefore, we must go re-developing new technologies to integrate all these items. Regarding the circuits, we must use CMOS circuits to generate input signals for qubits and readout the results of quantum calculation, which should be operated at cryogenic temperature. This is so-called “cryo-CMOS.” We must explore a new side of the transistor technologies, which is not investigated so far, because the physics of the MOSFET operation is quite different from the conventional room-temperature operation, hampering the circuit design due to the lack of the device operation model. In this situation, despite the long history of MOSFETs, new phenomena of transistor operation are discovered. For example, the low-frequency current noise increases at a low temperature. The origin of the noise is on the interface traps, instead of the fixed charges in the gate oxides as is the case for room temperature operation [3]. Therefore, we must re-developing CMOS circuit technologies from the bottom of the technologies, device physics. In this presentation, I’m going to overview the status of silicon technology developments for quantum from the viewpoints of devices, integration, and circuits. Also, we introduce some of our recent results to contribute to the developments. Acknowledgment: Our work is supported by MEXT Quantum Leap Flagship Program (Q-LEAP) JPMXS0118069228. [1] H. Asai et al., IEEE Electron Devices Technology and Manufacturing Conference 2021. [2] S. Iizuka et al., Tech. Dig. Symp. VLSI Technology 2021. [3] H. Oka et al., Tech. Dig. Symp. VLSI Technology 2020.
49
Tilga, Henri, Hanna Kalajas-Tilga, Vello Hein, Lennart Raudsepp, and Andre Koka. "Perceived Autonomy Support from Peers, Parents, and Physical Education Teachers as Predictors of Physical Activity and Health-Related Quality of Life among Adolescents—A One-Year Longitudinal Study." Education Sciences 11, no. 9 (August 24, 2021): 457. http://dx.doi.org/10.3390/educsci11090457.
Full textAbstract:
The current research adopts the trans-contextual model of motivation (TCM) to examine the role of perceived autonomy support from peers, parents, and physical education (PE) teachers on adolescents’ autonomous motivation, intentions, and physical activity (PA) and health-related quality of life (HRQoL) over a one-year period. Adolescents (N = 264) aged between 11 and 15 years (M = 13.24; SD = 0.96) filled in relevant questionnaires during a four-wave longitudinal study. Perceived autonomy support from peers, parents, and PE teachers predicted PA (β ≥ 0.03, p < 0.009) and HRQoL (β ≥ 0.01, p < 0.009) mediated by constructs of TCM over a one-year period. The regressions of PA (β = 0.45, p < 0.001) and HRQoL (β = 0.56, p < 0.001) on themselves over a one-year period were significant. PA significantly predicted the HRQoL measured one year later (β = 0.20, p < 0.001), but not vice versa (β = 0.04, p = 0.52). The unidirectional cross-lagged relationship with the flow from PA to later HRQoL suggests that intervention programs focusing on promoting PA behaviour in adolescents should produce the most pronounced effects if their aim is also to promote HRQoL.
50
Coker, J. O., A. E. Akinmoladun, A. J. Agbelemoge, S. O. Ariyo, O. O. Bayewu, G. O. Mosuro, and A. O. Alaka. "Application of electrical and magnetic geophysical methods in depth estimation of potential mineral depositat Olabisi Onabanjo University, Ago Iwoye, Southwestern Nigeria." Scientia Africana 19, no. 3 (February 23, 2021): 1–14. http://dx.doi.org/10.4314/sa.v19i3.2.
Full textAbstract:
Geophysical techniques are powerful tools in depth estimation of minerals deposits. This survey was carried out to evaluate the nature and depth of mineral deposits near the Sports complex of Olabisi Onabanjo University (OOU), Ago-Iwoye.’. A total of five (5) Vertical Electrical Soundings (VES) points were investigated using Pasi Terrameter. The spread across the area using the Schlumberger configuration was with a maximum current electrode separation of 100m. The results obtained were interpreted quantitatively and qualitatively using partial curve matching and computer iteration programs known as WINRESIST and SURFER 11. Also, forty one (41) survey profiles were taken at a station interval of 5m using the GEM Magnetometer to acquire the Total Magnetic Intensity reading. The Guassian filter-Oasis Montaj was used for the computation of regional field from the observed TMI readings of the area. The geologic andstructural map reveals a few visible fractured zones imbedded in the migmatite-gneiss deposits which spread from the northwest to the southern and eastern part of the study area and the granite gneiss was seen around the Southwestern and Northern parts. The delineated fractures could potentially serve as geologic traps for mineral localization. The 2D radial average power spectrum indicates that, the northeast part of the mapped area has a depth of 4.5mand a depth of 13m at the eastern part. It can be seen that the depth are shallow and there are visible outcrops at the study area.The approximate depth to the mineral deposit was determined using the standard Euler solution to be around 13 m and the elevation range obtained varies between 37 m – 50 m. The correlation of the electrical and magnetic techniques shows that both methods are able to give the estimated depth of shallow mineral deposit which range between 13 m – 18m.
Keywords: Euler solution, Geophysical Techniques, Lithology, Total Magnetic Intensity, Vertical Electrical Sounding.