Core System Research Articles

Two types of genetic reasoning in contemporary psychology and their relevance for education

The paper shows how arguments based on genetics came back in the 1960s. The universalist claims started from the innatism of Chomsky, and gradually extended the idea of preconfigured cognitive systems to several areas. This resulted in the development on new methods towards studying preverbal infants, but also in proposing much leaner prewired core systems. The other revival of genetic ideas in psychology was mainly reraising to classical nature/nurture debates regarding IQ. The new epigenetic theories propose a new synthesis in the frames of developmental science: environmental enrichment fosters the unfolding of genetic based individual differences.

FTTH 방송 오버레이용 EYDFA 부품과 핵심 시스템 개발 및 연구

In this study, erbium ytterbium doped fiber amplifier components and core systems for fiber to the home broadcast overlays are developed and evaluated to ensure stable high-power light even during long-distance data transmission in broadcast networks. Consequently , data transmission in the broadcasting network is found to be low in loss, long-distance transmission is deemed possible, and stable optical signals can be amplified using domestic equipment instead of expensive foreign equipment. The tools developed in this study provide an opportunity to reduce dependence on overseas products by allowing domestic technology, which lacks optical amplifier technology, to compete with overseas products at a low price. In the future, these tools are expected to accommodate more members from the optical communication field and be applied to various fields that use high-power light.

Design and Synthesis of Kekulè and Non-Kekulè Diradicaloids via the Radical Periannulation Strategy: The Power of Seven Clar’s Sextets

This work introduces an approach to uncoupling electrons via maximum utilization of localized aromatic units, i.e., the Clar's π-sextets. To illustrate the utility of this concept to the design of Kekulé diradicaloids, we have synthesized a tridecacyclic polyaromatic system where a gain of five Clar's sextets in the open-shell form overcomes electron pairing and leads to the emergence of a high degree of diradical character. According to unrestricted symmetry-broken UCAM-B3LYP calculations, the singlet diradical character in this core system is characterized by the y0 value of 0.98 (y0 = 0 for a closed-shell molecule, y0 = 1 for pure diradical). The efficiency of the new design strategy was evaluated by comparing the Kekulé system with an isomeric non-Kekulé diradical of identical size, i.e., a system where the radical centers cannot couple via resonance. The calculated singlet-triplet gap, i.e., the ΔEST values, in both of these systems approaches zero: -0.3 kcal/mol for the Kekulé and +0.2 kcal/mol for the non-Kekulé diradicaloids. The target isomeric Kekulé and non-Kekulé systems were assembled using a sequence of radical periannulations, cross-coupling, and C-H activation. The diradicals are kinetically stabilized by six tert-butyl substituents and (triisopropylsilyl)acetylene groups. Both molecules are NMR-inactive but electron paramagnetic resonance (EPR)-active at room temperature. Cyclic voltammetry revealed quasi-reversible oxidation and reduction processes, consistent with the presence of two nearly degenerate partially occupied molecular orbitals. The experimentally measured ΔEST value of -0.14 kcal/mol confirms that K is, indeed, a nearly perfect singlet diradical.

Study on an open fuel cycle of IVG.1M research reactor operating with LEU-fuel

The fuel cycle characteristics of the IVG.1M reactor were studied within the framework of the research reactor conversion program to modernize the IVG.1M reactor. Optimum use of the nuclear fuel and reactor was achieved through routine methods which included partial fuel reloading combined with scheduled maintenance operations. Since, the additional problem in planning the fuel cycle of the IVG.1M reactor was the poisoning of the beryllium parts of the core, reflector, and control system. An assessment of the residual power and composition of spent fuel is necessary for the selection and justification of the technology for its subsequent management. Computational studies were performed using the MCNP6.1 program and the neutronics model of the IVG.1M reactor. The proposed scheme of annual partial fuel reloading allows for maintaining a high reactor reactivity margin, stabilizing it within 2–4 βeff for 20 years, and achieving a burnup of 9.9–10.8 MW × day/kg U in the steady state mode of fuel reloading. Spent fuel immediately after unloading from the reactor can be placed in a transport packaging cask for shipping or safely stored in dry storage at the research reactor site.

Chemical bonding analysis on MgEH15 (E = Sc and Y), highly stable clusters for hydrogen storage

Magnesium based alloys containing scandium and yttrium are promising materials for hydrogen storage devices due to the hydrogen absorption and desorption kinetic and thermodynamic properties, results showing the reversibility of the hydrogenation reaction and leads to a long-lasting energy source. Nevertheless, to the best of our knowledge, there are no theoretical studies comparing the stability between Y and Sc-doped systems available in the literature. In this contribution, we report an analysis of stability and chemical bonding nature for a series of complexes MgEHn (E = Sc and Y, where n = 10 –16) with the aim to understand the nature of binding between a hydrogen molecule and the core system of the metal blend. The results obtained suggest that yttrium-bonded hydrogen molecules are more labile for a dehydrogenation step in comparison to those with scandium. Additionally, based on QTAIM and EDA-NOCV calculations, we conclude that alloys containing scandium are predicted to be more tightly bonded to H2 molecules than those with yttrium. Consequently, the dehydrogenation reaction would be more thermodynamically favorable for the latter.

1 0 0] Dislocation core extension and decomposition in BCC bicrystal under biaxial loading

The evolution of grain boundary dislocation structure under biaxial tension–compression loading is simulated by the phase field crystal (PFC) method for small angle symmetric tilt grain boundary (STGB) of body center cubic (BCC) bi-crystal. Extension of the STGB dislocation core under the strain and the extended width of the core with the strain increasing are studied. In the elastic deformation process under the loading, the extension of the grain boundary dislocation core is accompanied by increasing the strain energy of the system. When the extension of the dislocation core reaches maximum critical width, the extended dislocation core occurs to decompose into three dislocation cores, in which two cores is in no-extended state, the Burgers vector direction of which is in the same direction of the original extended dislocation. The other dislocation core is of the extended type which Burgers vector direction is opposite to the Burgers vector direction of the original extended dislocation core. By establishing the macroscopic energy equation of the extended dislocation core system, it can be well revealed that the elastic strain energy is mainly stored in the extended dislocation defects and the complete lattice of the matrix. At the same time, it also reveals the function relationship between the energy of the extended dislocation core and the width of the extended dislocation during the biaxial loading process of the bi-crystal, as well as the critical condition of energy instability and the change of the energy barrier of the system for the dislocation extension core decomposition.

코어시스템이 지역사회 재난 레질리언스에 미치는 영향

When modern societies face disasters, the goal of restoring to a pre-disaster state is minimal and disaster management is essential. However, a society that has faced and overcome disasters is a more developed society that prepares for new disasters and dreams of a safer and more sustainable social capacity. Disaster resilience, which is social resilience against new, inexperienced, and unpredictable complex and diverse disasters, lies in the organic connection of human, institutional, material, and social capital in the local community and in the disaster management system. The need for research on the core system, which is a key inspection system leading in a desirable direction, is becoming more important. Exploring how the values, institutions, leadership, followership, and capacity of the core system affect the strengthening of community disaster resilience is ultimately a disaster that focuses community capacity on disaster management, resulting in recovery, adaptation, and development. It will be a major way to evaluate the management system and judge its usefulness.

Design, Verification and Testing of Comprehensive Serial Peripheral Interface

Synchronous serial interfaces are frequently employed to offer cost-effective board-level interfaces between various devices, including microcontrollers, DACs, ADCs, and others. Components that are compatible with SPI and Microwire are made by numerous IC makers. An interface called Serial Peripheral Interface (SPI) makes it easier to send synchronous serial data. In master/slave mode, data frames are initiated by the master device. With a separate slave choose line, multiple slave devices are permitted. It is necessary to guarantee that the given hardware design operates as intended and produces the desired outcomes. The design phases would need to be repeated after the functional flaws were discovered. Verification is thus a process that is time and money efficient. Due to this, a strong testbench structure is required, one that includes large broad verification elements that are easily extensible across designs and are extensively reusable. To gain good control over stimulus creation, functional coverage, and other factors, an industry standard verification technique is needed. The primary goal of this work is to design the Master SPI Core and use System Verilog to validate the code. Serial Peripheral Interface of symmetrical structure was synthesized using Cadence genus, and then simulated using Questa IDE. The testing of the SPI core was done by inserting the scan chains using the Cadence Genus tool and finally the code coverage of the SPI core was captured using the Questa IDE. Keywords: SPI, Coverage, Protocol, I2C, Functional Verification

Experimental Evaluation of Foam Diversion for EOR in Heterogeneous Carbonate Rocks

Immiscible gas injection applied to heterogeneous carbonate reservoirs can be inefficient due to poor conformance control. Foam mobility control is proposed in this work as a solution for gas conformance issues in such reservoirs. A unique experimental program was developed to evaluate alkyl polyglucoside (APG) stabilized foam for foaming ability, emulsion-forming tendency and resistance to oil. Dynamic methane foam behavior is systematically studied through single and dual injection core flooding experiments, simulating foam diversion during immiscible methane flooding in a layered reservoir with a significant layer permeability contrast. Results show a stable foam-oil system with no viscous emulsions at very high formation brine salinity (144,000 ppm total dissolved solids). Single-core floods for the high permeability layer (Unit-A) showed that foam viscosity of 27 cP could be achieved at 11% oil saturation (So). Under similar oil-wet condition, the low permeability zone (Unit-B) could generate foam of 21 cP at 18.9% So, indicating an increase in injected fluid mobility reduction with permeability. Dual-core injection experiments, which is designed to evaluate accurately fluid diversion capacity of such foams, reveals remarkable dynamic foam behaviors. While the water-wet condition indicates the scalability of foam behaviors (i.e., the ability of foam to control fluid mobility against the variation of rock permeability) between the single and composite core systems, the oil-wet condition confirms good foam resistance to residual oil that resulted in an increase in Unit B production from 46 to 82%, and 74 to 85% for Unit-A. Moreover, dual-core floods representing premature waterfloods (i.e., higher oil saturation) shows even more dramatic incremental oil recovery (44 to 81% in Unit-A and 17.5 to 71% in Unit-B), evidencing the ability of foam to self-viscosify with permeability variation at varying oil saturations.

Excited-State Intramolecular Proton Transfer Parent Core Engineering for Six-Level System Lasing Toward 900 nm.

Organic molecules which can undergo excited-state intramolecular proton transfer (ESIPT) process have been considered as ideal gain materials for near-infrared organic lasers owing to their effective four-level systems. However, extending lasing wavelength beyond 800 nm with present ESIPT-active gain materials is still in challenge. Herein, we established a molecular design strategy that operates via extending the π-conjugated system of the ESIPT parent core to enhance the cascaded double ESIPT process and thus to achieve the red-shifted six-level system lasing. Concretely, a model molecule with 1,9-dihydroxyanthracene as the ESIPT parent core was designed and synthesized, which was proved to undergo twice cascaded ESIPT processes while the 1,8-dihydroxynaphthalene-based analogue can only undergo once ESIPT process based on DFT calculations and ultrafast dynamics analyses. Finally, a six-level system lasing toward 900 nm was achieved with a low threshold of 27.4 μJ cm-2 .

Excited‐State Intramolecular Proton Transfer Parent Core Engineering for Six‐Level System Lasing Toward 900 nm

AbstractOrganic molecules which can undergo excited‐state intramolecular proton transfer (ESIPT) process have been considered as ideal gain materials for near‐infrared organic lasers owing to their effective four‐level systems. However, extending lasing wavelength beyond 800 nm with present ESIPT‐active gain materials is still in challenge. Herein, we established a molecular design strategy that operates via extending the π‐conjugated system of the ESIPT parent core to enhance the cascaded double ESIPT process and thus to achieve the red‐shifted six‐level system lasing. Concretely, a model molecule with 1,9‐dihydroxyanthracene as the ESIPT parent core was designed and synthesized, which was proved to undergo twice cascaded ESIPT processes while the 1,8‐dihydroxynaphthalene‐based analogue can only undergo once ESIPT process based on DFT calculations and ultrafast dynamics analyses. Finally, a six‐level system lasing toward 900 nm was achieved with a low threshold of 27.4 μJ cm−2.

Creative Project Activity of Students: from Unconscious to Conscious Understanding

The study considers the necessity to introduce project activities into students’ education process of Core nuclear program system at Tyumen State University. The article studies the problem of organization and implementation of project activities in the process of English learning. The purpose of the research is to study the attitude of students of non-linguistic institutions of Tyumen State University to creative project activities in the process of teaching English. The goals, functions and types of project activities in teaching students are determined. The stages, sequence of actions and requirements for the implementation of creative projects in English are considered. A review of literature devoted to the attempts to apply the project approach in the process of education in different time periods was carried out. The advantages of introducing project activities in the process of learning a foreign language are presented based on the analysis of theoretical and practical data. The main difficulties and errors in the implementation of project activities of students in the learning process of the university are analyzed.

Photodynamic antimicrobial activities of halogenated 3,5-dimethyl- and 1,3,5,7-tetramethyl-meso-pentafluorophenyl BODIPY dyes

The photodynamic antimicrobial chemotherapy (PACT) activities of four meso-pentafluorophenylBODIPY dyes were studied against Staphylococcus aureus to identify structure-property relationships related to the introduction of different substituents on the BODIPY core. 1,3,5,7-Tetramethyl dyes with bromine and iodine atoms at the 2,6-positions (2a and 3a) were synthesized and characterized along with 3,5-dimethyl dyes that were either tetrabrominated at the 1,2,6,7-positions (2b) or diiodinated (3b) at the 2,6-positions. The incorporation of iodine atoms on the BODIPY core at the 2,6-positions enhanced the PACT activity relative to those of the di- and tetrabrominated dyes. Replacing the methyl groups at the 1,7-positions with protons to form 3b results in greater PACT activity than is the case with 3a since the absence of steric hindrance related to methyl groups at the 1,7-positions allows the meso-aryl ring to rotate closer to the plane of the [Formula: see text]-system of the BODIPY core. The tetrabrominated dye was found to have the lowest PACT activity due to a lack of stability in solution and poor uptake by the bacteria being studied. The electron-withdrawing pentafluorophenyl group was selected to lower the dipole moment of the BODIPY core dye since poor PACT activity was observed when a 2,6-dibromo-1,3,5,7-tetramethyl BODIPY dye was prepared with a thiomethylphenyl group (2c).

Підхід до аналізу поздовжньої стійкості рідинної ракети-носія пакетної схеми компонування

The “core and strap-on boosters” layout of launch vehicle (LV) stages is quite common in heavy LV development. However, POGO oscillations in liquid-propellant LVs with this stage layout have some features. It is shown that the structure of LVs of this type as a dynamic object has a dense spectrum of natural frequencies and complex spatial mode shapes. The longitudinal oscillations of the identical elements of the LV side strap-on boosters may be in phase or in antiphase, while the longitudinal mode shapes of the LV central core and strap-on boosters may differ both in phase and in amplitude. In flight, the thrust of the engines of the side strap-on boosters may also oscillate in phase or in antiphase, as a result of which the interaction of the LV structure with the sustainer propulsion systems of the side strap-on boosters may have both a stabilizing and a destabilizing effect on the POGO stability of a liquid-propellant LV. This paper presents a mathematical model of the “liquid-propellant propulsion systems – LV structure” dynamic system. The model describes the interaction of the longitudinal vibrations of the structure of a two-stage “core and strap-on boosters” LV with the core and strap-on booster propulsion systems. The free longitudinal vibrations of the structure of a ‘core and strap-on boosters’ LV were simulated using computer-aided finite element design tools (CAE systems). The simulation was the first to account for the dissipation of the liquid propellant and LV structure oscillation energy. The paper suggests an approach to analyzing the POGO stability of liquid-propellant “core and strap-on boosters” LVs with the use of the Nyquist criterion generalized to the case of multidimensional dynamic systems. The approach is based on opening the thrust feedback loops of the “liquid-propellant propulsion systems – structure” closed-loop dynamic system and studying the stability of the one-channel systems obtained in this way. Based on the proposed approach, the interaction between the longitudinal vibrations of the “core and strap-on boosters” LV structure and low-frequency processes in the liquid-propellant sustainer propulsion systems of the LV first stage was studied numerically.

Computer vision-based approach to detect fatigue driving and face mask for edge computing device

The fatality of road accidents in this era is alarming. According to WHO, approximately 1.30 million people die each year in road accidents. Road accidents result in significant socioeconomic losses for people, their families, and the country. The integration of modern technologies into automobiles can help to reduce the number of people killed or injured in road accidents. Most of the study and police reports claim that fatigued driving is one of the deadliest factors behind many road accidents. This paper presents a complete embedded system to detect fatigue driving using deep learning, computer vision, and heart rate monitoring with Nvidia Jetson Nano developer kit, Arduino Uno, and AD8232 heart rate module. The proposed system can monitor the driver's real-time situations, then analyze the situation to detect any fatigue conditions and act accordingly. The onboard camera module constantly monitors the driver. The frames are retrieved and analyzed by the core system that uses deep learning and computer vision techniques to verify the situation with Nvidia Jetson Nano. The driver's states are identified using eye and mouth localization approaches from 68 distinct facial landmarks. Experimentally driven threshold data is employed to classify the states. The onboard heart rate module constantly measures the heart rates and detects any fluctuation in BPM related to the drowsiness. This system uses a convolutional neural network-based deep learning framework to include additional face mask detection to cope with the current pandemic situation. The heart rate module works parallelly where the other modules work in a conditional sequential manner to ensure uninterrupted detection. It will detect any sign of drowsiness in real-time and generate the alarm. The system successfully passed the initial lab tests and some actual situation experiments with 97.44% accuracy in fatigue detection and 97.90% accuracy in face mask identification. The automatic device was able to analyze different situations of drivers (different distances of driver from the camera, various lighting conditions, wearing eyeglasses, oblique projection) more precisely and generate an alarm before the accident happened.

First divertor Thomson scattering measurements on MAST-U.

MAST-U is equipped with a Super-X divertor, which aims to reduce heat flux to the target and promote detachment. Measurements of plasma electron density and temperature in the Super-X chamber offer insight into the processes at work in this type of divertor. First data have been obtained from the MAST-U divertor Thomson scattering diagnostic designed to measure these quantities. Following a Raman scattering calibration in nitrogen, the diagnostic operated over a number of plasma pulses in the first physics campaign. Electron density and temperature measurements have been taken in attached and detached conditions as the strike leg moved through the field of view of the diagnostic. The system operated with a dedicated 30Hz laser with timing synchronized to seven similar lasers installed in the core Thomson system. Electron densities in the range of 1 ×1018-5 ×1019 m-3 have been measured by the system throughout these regimes. Although the system was specified to measure from 1 to 40eV, electron temperatures in the Super-X divertor in the first campaign were low, and measurement down to 0.5eV has been critical, particularly close to the detachment front. This generation of polychromator has been designed with increased stray light rejection compared to those used in the core system. This has proved successful with very low levels of stray light observed.

Policies and healthcare to support preconception planning and weight management: optimising long-term health for women and children.

To explore opportunities to change increasing weight gain trajectories for women during their reproductive lives, focusing on optimising health before pregnancy. Type of program: Identifying optimal policies, health promotion and health services to support preconception health for women (with a focus on achieving a healthy weight). Narrative description of changing policies and approaches for improving preconception health. Preconception preventive health priorities have been clearly determined globally and nationally. However, further rigorous research for effective interventions to facilitate healthy weight and other aspects of preconception health, alongside effective policies and strategies for implementing these interventions, remains potentially important. Barriers for women, their partners, families, communities and health professionals must be overcome and enablers fostered. The inclusion of preconception lifestyle health to tackle maternal and childhood obesity as a key priority of the World Health Organization as well as in the Australian National obesity strategy 2022-2032 are steps in the right direction. Improving health across the life course requires a whole of system, integrated and equitable approach to health promotion, healthcare and policy. This includes integrating education, work, community environments, and health professionals to engage girls and young women well before pregnancy, to optimise their health. National coordination to determine core indicators and systems to evaluate and monitor change has been shown to help internationally and can be applied in Australia.

In situ acoustic coring systems for investigating the acoustic and physical properties of mud

In situ measurements of compressional and shear wave speed and attenuation provide direct characterization of marine sediment acoustic properties at near ambient conditions, as opposed to measurements that are conducted on samples removed from the seabed. Probe-based acoustic measurement techniques utilize piezoelectric sources and receivers that penetrate the seabed to obtain spatially localized depth-dependent records of compressional and shear waves in the sediment. When such measurements are coupled with conventional coring techniques, sediment samples can be collected from the propagation path between probes, allowing for comparison between the in situ acoustic records and quantities obtained from ex situ core analyses, such as porosity, grain size, or organic matter. Two acoustic coring measurement systems have been developed to investigate the acoustic, physical, and biological properties of soft sediment—the acoustic coring system, a gravity-corer-based platform capable of penetrating the seabed up to several meters, and the acoustic multi-corer, a seabed lander that samples the upper tens of centimeters of sediment near the water-seabed interface. The design and operation of these measurement platforms will be described, along with their capabilities and limitations. Some representative results from field deployments of these systems will be presented. [Work sponsored by ONR.]

Wind Design of Composite Plate Shear Walls/Concrete Filled (SpeedCore) Systems

Composite steel plate shear walls/concrete filled (C-PSW/CF), also known as the SpeedCore system, are a composite solution for the design of mid- to high-rise buildings. A C-PSW/CF system consists of steel plates (web and flange plates) and an infill concrete core. The composite interaction between steel plates and concrete core is developed by either tie bars or tie bars and shear studs. Generally, in low- to mid-rise buildings (less than 15 stories), planar (uncoupled) C-PSW/CF are adequate for resisting lateral loading and deformations. Coupled C-PSW/CF become more prevalent in mid- to high-rise buildings when increased lateral stiffness is desirable. The steel parts of a SpeedCore system (steel plates, tie bars, and shear studs) are prefabricated in the shop and then transported to the site for assembly and erection. The erected empty steel module serves as falsework and formwork during construction and concrete casting, which reduces construction schedule considerably. This is a major advantage of SpeedCore systems, especially when compared with conventional reinforced concrete core systems. This paper presents the wind (nonseismic) design requirements and procedures for planar uncoupled and coupled C-PSW/CF systems. It includes a design example of a 15-story building located in Chicago, Illinois, using both uncoupled and coupled systems.

Fracture Resistance of Endodontically Treated Premolars Reconstructed by Traditional Casting and CAD-CAM Milling Post and Cores.

Purpose Restoration of endodontically treated premolars has always been considered as a challenging procedure. This study compared the fracture strength and mode of failure of root canal treated premolars reconstructed with various post and core systems. Materials and Methods Twenty healthy extracted premolars were selected and underwent root canal treatment and then randomly assigned into 4 groups (n = 5). The teeth in group 1 restored with amalgam, whereas others reconstructed with post and cores made by cobalt-chromium (Co-Cr) casting (group 2), nonprecious gold (NPG) casting (group 3), or computer-aided design (CAD) and computer-aided manufacturing (CAM) milling (group 4). The force at fracture was measured in a universal testing machine, and the failure mode was recorded as repairable or nonrepairable. Results ANOVA revealed a significant difference in fracture resistance between groups (P=0.001). The control group displayed significantly lower strength than that of the CAD-CAM or CO-Cr groups (P < 0.05). The CAD-CAM posts were also more resistant to fracture than the NPG group (P < 0.05). The frequencies of repairable fracture in the control, Co-Cr, NPG, and CAD-CAM groups were 40%, 20%, 20%, and 60%, respectively. The chi-square test revealed no significant difference in the distribution of failure modes between groups (P=0.415). Conclusion The teeth reconstructed with post and cores were more resistant to fracture than those restored with amalgam alone. CAD-CAM milling could be considered as the best system for reconstruction of endodontically treated teeth, as it provided the highest fracture strength with less risk of nonrepairable tooth fracture.