bluuebunny/crossref_metadata_2025 huggingface dataset:
A wireless multi-parameter monitoring device for aircraft
Authors: Wang C.
Published: March 2023

Abstract. For ensuring the structure integrity and safety of aircraft during flight, aircraft health monitoring requires real-time perception of aircraft structural state and service environment parameters, such as impact, damage, vibration, temperature, humidity and air pressure. At the same time, airborne monitoring environment also puts forward requirements for device including aspect of wireless communication and power consumption. In this paper, a wireless multi-parameter monitoring device is reported. This device has the function of monitoring random impact on aircraft structure through connected PZT sensor array adopting digital sequence method, and is able to reliably monitor vibration, temperature, humidity and air pressure by several digital sensors. In addition, the multi-parameter monitoring function verification experiment is performed, showing that the reported device obtains the signal from PZT and accurately locates the impact region, and some results of vibration, temperature, humidity and air pressure monitoring are given, thus proving its multi-parameter monitoring ability for aircraft structure.
Tactical athlete training and performance monitoring using motion tape wearable sensors
Authors: Lin Y.-A.
Published: March 2023

Abstract. Physical, tactical, and field training are critical for improving warfighter physical performance and capabilities. Exercises and training events are typically supervised; however, group/team training and field exercises lack personalized supervision. While technologies such as optical motion capture (mocap) can capture detailed biomechanics, they are most conveniently used in indoor laboratory settings or in a pre-staged outdoor area. Commercial wearable sensors are readily available, but the data typically correspond to a discrete bodily location and only provide limited information about whether someone is moving, as opposed to how movements are being performed. To fill this gap, a self-adhesive, elastic fabric, nanocomposite skin-strain sensor was developed, extensively tested, and validated through human subject studies. It was found that these “Motion Tape” sensors were not only able to measure skin-strains during functional movements, but its measurements were also correlated with how muscles engage. In this study, Motion Tapes were worn at major muscle groups, and participants performed exercises that simulated military marksmanship training activities. Mocap measurements were also obtained to acquire baseline biomechanical movement data and to quantify typical marksmanship outcomes. Individuals (civilians) were first asked to perform a simulated rifle shooting task (i.e., incorrectly), before being asked to repeat the task (i.e., correctly) after being provided with instructions that targeted improved performance. The results confirmed that Motion Tape skin-strain measurements were able to differentiate between “incorrect” and “correct” movement sequences.
Machine learning: approaches to predicting reliability and developing maintenance strategies
Authors: Singh S.
Published: March 2023

Abstract. Current approaches to maintenance of rolling stock bogies are focused on compliance to wear limits as stipulated by OEM specifications. OEM recommendations are critical to providing an industry wide approach to safety and compliance. These are not operation specific and are often not the most cost-effective solutions. A system approach to reliability is an established approach that is applied in less complex systems where the relationships between components are well defined with historical data and predictable conditions. Extending this approach to more complex multi-variate systems where many relationships are not intuitively obvious or mathematically defined presents a challenge. Machine learning techniques have been applied to address such problems with examples in image recognition, tool wear prediction using multiple sensory inputs and estimating railway bogie wear using vibration inputs. [8,9,10] The aim of the study is to extend and adapt machine-learning techniques to the area of developing maintenance strategies for optimal business benefit with a specific focus on railway bogie maintenance. This study aims to present an insight into the variables, which includes bogie tracking condition affecting track side wear rate. A finding is that an in-depth study of each independent variable’s individual impact is a necessary step to efficient modelling. These include track geometry, operating and bogie component wear variables. Track side wear, curve radius, superelevation and track top variance have been found to be significant predictors of track side wear rate. These impact predictions are not consistent between the different rail tracks and are not exhaustive. Specifically, the impact of bogie performance requires inclusion. Combining these variables mathematically using statistical inference and convolutional theory with maximum likelihood estimators would establish a predictor for side wear rate for the specific operation. The paper finally discusses the relationship of area wear rate to side wear rate and the influences of grinding frequency and rail material type.
A novel penetrator for preventing tissue structure damage during pleural decompression procedure
Authors: Bai S.
Published: March 2023

Abstract. Tension pneumothorax(tPTX) refers to air accumulation in the pleural cavity, which is a life-threatening condition. In clinical practice, the intervention is performed when tPTX is suspected. Needle thoracostomy (NT) is the primary treatment recommended by both civil and military guidelines. This is an invasive procedure and is often performed in challenging emergency settings such as the pre-hospital environment. However, it is reported that the effective rate is low. Due to the complexity of the pleural disease, there are several barriers of a successful pleural decompression, such as misdiagnosis, unsuccess treatment and complications of the treatment. One of the problems regarding current instruments used in NT procedure is that the tissue structure could be damaged by the overshoot of the needle-like penetrator. To address this problem, a novel all-in-one device is designed for emergency management of tension pneumothorax. The novel penetrator, which is a sub-assembly of the novel all-in-one device, is aimed at safely penetrating the chest wall and creating a fluid pathway between pleural cavity and ambient air. This research presents the characterization of one safety parameter of the tissue-structure-protection mechanism of the penetrator. In the present study, the mechanism is triggered by a custom-made clipper and the impact force is then measured by an impact hammer. The result shows that the maximum G force generated by the spring-loaded tissue-structure-protection mechanism will not exceed the lung damage threshold found in an animal trial.
Monitoring the bone degradation-induced loosening of osseointegrated percutaneous implant using vibration analysis
Authors: Zhou Q.
Published: March 2023

Abstract. Osseointegrated implants attach prosthetic devices directly to the skeletal system with a stable connection, allowing amputees to control prostheses with good proprioception. However, periprosthetic cortical thinning can occur if the remaining bone is stress shielded after implantation, resulting in aseptic implant loosening, and requiring revision surgery. It is therefore important to quantitatively monitor the degree of bone loss and probability of loosening to provide evidence for doctors to plan treatment. This computational study investigates the vibration behavior of a bone-implant construct by monitoring its transient response over varying degrees of bone degradation. The thickness of distal bone is progressively reduced through a revolving material removal to simulate cortical thinning due to stress shielding. First, bonded contact is adopted to represent the case of the fully osseointegrated implant under bone resorption, leading to a linear vibrational response. Next, frictional contact with 0.05 mm over-fit offset is adopted to include the non-linear contact behavior when loosening is induced by cortical thinning. The torsional mode shape of the bone-implant construct is identified through cross-spectrum analysis. The results suggest that the change in the natural frequency of the first torsional mode provides the most sensitive indicator of cortical thinning and implant loosening. The findings underpin the potential of vibration analysis in the monitoring of bone degradation-induced implant looseness.
Experimental nondestructive detection on grout defects in a prefabricated concrete frame
Authors: Zhang X.
Published: March 2023

Abstract. Researches on grout defects detection in prefabricated structures with rebars connected by sleeves are few at present. This study presents a nondestructive grout defects detection method based on wavelet packet analysis. An experiment is carried out on a prefabricated concrete frame with external sinusoidal excitation applied. Furthermore, structural acceleration responses are collected, and defects detection index the percentage of energy transfer (PET) is proposed based on wavelet packet analysis to identify the grout defects degree in sleeves and reasonable results are obtained.
Evaluation of Building Damage due to Natural Disaster using CNN and GAN
Authors: Yamada H.
Published: March 2023

Abstract. After destructive natural disasters, it is necessary to quickly grasp the damage situation for the initial response. In recent years, studies on the method of the automatic evaluation of building damages due to disasters using the convolutional neural network (CNN), which is a deep learning methodology for image recognition, were conducted. In these studies, it was clarified that a large number of images are necessary to train the CNN with sufficiently high accuracy. However, the number of images of damaged building is limited. Therefore, in the present study, we used the generative adversarial network (GAN) to automatically generate a large number of imitation images of damaged and undamaged buildings and trained the CNN using imitation images to obtain a higher accuracy rate of the CNN. Then, the validity of the CNN for judgment of “damaged” and “undamaged” using imitation images was confirmed. In addition, photographs of actual buildings were input to the trained CNN as test data.
Spectral and proton acceptor properties of chloramphenicol
Authors: Bazyl O. K.  , Bocharnikova E. N.  , Tchaikovskaya O. N.  , Chaidonova V. S.  , Mayer G. V.
Published: March 2023

The absorption spectra of chloramphenicol aqueous solution were obtained experimentally. The absorption spectra of chloramphenicol isomers and the effect on the spectra of the formation of H-bonded complexes were calculated and interpreted using quantum chemistry methods. Calculation results showed that the absorption spectrum of chloramphenicol by position of bands and their nature is largely determined by the nitrobenzene fragment with little participation of propanol and dichloroacetamide fragments of chloramphenicol. The proton acceptor properties of individual chloramphenicol fragments and the effect of the formation of H-bonded complexes on them have been analyzed. Keywords: chloramphenicol, enantiomers, electronic absorption spectrum.
Effect of nanodiamonds on fluorescence enhancement of tryptophan phototransformation reaction products in the presence of halocarbons
Authors: Kalvinkovskaya Ju. A.  , Pavich T. A.  , Ramanenka A. A.  , Bushuk S. B.  , Sobchuk A. N.  , Lapina V. A.
Published: March 2023

The role of nanodiamonds in the reaction of photochemical transformation of tryptophan in the presence of halogen hydrocarbons has been studied. The photochemical transformation of free tryptophan in a suspension with diamond nanoparticles and in a hybrid complex with them when exposed to UV radiation in the presence of chloroform is investigated. Data from stationary and time-resolved spectroscopic studies show the presence of non-radiative transfer of electron excitation energy between tryptophan molecules and its photodestruction products for the case of a covalent complex with a nanodiamond. It is shown that in the presence of energy transfer, an increase in the intensity of integral fluorescence occurs in the range of ~ 450 nm. Thus, a covalent tryptophan complex with a nanodiamond can serve as a fluorescent marker for the presence of chloroform in solution. Keywords: nanoscale diamonds, hybrid complexes, tryptophan phototransformation, spectral-luminescent properties, fluorescence decay kinetics, chloroform.
The study of noncovalent interactions between sevoflurane and acetone in liquefied Xe by the method of IR spectroscopy
Authors: Melikova S. M.  , Rutkowski K.S.
Published: March 2023

The IR spectra of sevoflurane + acetone mixtures in liquefied Xe were studied at T ~ 165-190 K. Complex formation stabilized by noncovalent interactions of weak H-bond type has been identified on the basis of changes found at selected bands of both components. Quantum-chemical calculations made on MP2/6-311++G(d,p) level, show that the spectrum in the region of stretching vibrations of CH and CH2 groups is formed due to anharmonic effects, specifically Fermi resonances. Keywords: cryospectroscopy, sevoflurane, acetone, complex, noncovalent interactions, quantum-mechanical calculations.
Influence of matrix absorbance on the near-field and spectral characteristics of plasmon spherical nanoparticles scattering
Authors: Dynich R. A.  , Ponyavina A. N.
Published: March 2023

Regularities of a size dependence of extinction and absorption efficiency factors as well as of near-zone and far-zone scattering efficiency factors are studied in the spectral range of the surface plasmon resonance of absorption (SPRA) for silver spherical nanoparticles placed into absorbing matrixes with complex refraction index nm+ikappam. Numerical simulation was made with the use of the Mie theory for absorbing matrixes. Approximation of the electron mean free path limitation was used in order to take into account the intrinsic size effects into a metal nanoparticle which consist in a size dependence of its dielectric characteristics. We shown that a growth of matrix absorbency leads to a strong suppression of resonances of extinction Qext and near-zone scattering QNF efficiency factors without any essential changing of their spectral position. We established that for any fixed wavelength in the spectral range of the SPRA the values of Qext and QNF depend on metal nanoparticle sizes nonmonotonically at kappam=0-0.1. The RNP optimal value, which corresponds to the maximal values of efficiency factors for the given material of plasmonic nanoparticles, increases at the matrix absorbency growth. The intrinsic size effects contribution to the efficiency factors resonance suppression decreases at the enhancement of nanoparticle sizes and/or matrix absorption. As an example of a real absorbing matrix with a dispersion of relraction index we considered the nickel phtalocyanine matrix (NiPc), which is interesting from the point of view of photovoltaic applications. Keywords: Plasmonic naniparticles, absorbing matrixes, characteristics of near-zone and far-zone scattering.
Localization of electromagnetic waves in a zigzag lattice of waveguides with competing cubic and quintic nonlinear responses
Authors: Kazantseva E. V.  , Maimistov A. I.
Published: March 2023

The zigzag waveguide array is considered, where even waveguides are composed of optically linear material, and their nearest neighbors are characterized by positive cubic nonlinearity and negative fifth-order nonlinearity. In the continuum (long-wave) approximation the solutions of the system of coupled wave equations are found, which describe waves localized in the lattice and harmonic propagating waves. Keywords: nonlinear waves, discrete photonics, waveguides, solitons.
Optical properties of pyrolytic Silicon Nitride SiNx enriched with silicon
Authors: Perevalov T. V.  , Spesivtsev E. V.  , Rykhlitsky S. V.  , Bobovnikov P. G.  , Krasnikov G. Ya.  , Gritsenko V. A.
Published: March 2023

Non-stoichiometric silicon nitride SiNx, enriched with silicon, is a promising material for the non-volatile resistive memory development. The current studies devoted to investigation of the optical properties of SiNx synthesized in a low-pressure reactor at 800oC at different ratios of dichlorosilane (SiH2Cl2) to ammonia (NH3). It was found that for films synthesized at SiH2Cl2/NH3=1/1, 1/2 and 1/3, the corresponding bandgap values are 3.83, 4.17 and 4.40 eV. At the same time, the corresponding values of the parameter x, found according to the theoretical dependence of the bandgap value on x for SiNx calculated from the first principles, are 1.26, 1.30 and 1.32. Thus, by increasing the SiH2Cl2/NH3 ratio, it is possible to create non-stoichiometric SiNx films with a controlled silicon enrichment degree with high uniformity of chemical composition and thickness. Keywords: silicon nitride, memristor, absorption coefficient, ellipsometry, quantum chemical modeling.
Emission spectra of low-pressure air during a diffuse streamer discharge
Authors: Tarasenko V.F.  , Baksht E. Kh.  , Vinogradov N. P.  , Sorokin D.A.
Published: March 2023

Attention to the study of the radiation characteristics of streamer discharges in atmospheric air at pressures of a fraction of a Torr unit is primarily associated with obtaining new data on high-altitude discharges, including red sprites. This paper presents the results of studying the characteristics of the radiation of a streamer discharge in low-pressure air upon initiation of ionization waves (streamers) by a repetitively pulsed barrier discharge. It has been established that at air pressures of Delta p=0.08-3 Torr, the lines of the second positive, first negative, and first positive nitrogen systems have the highest intensities in the wavelength range of Deltaλ=280-900 nm, and their contribution to the spectral radiation energy density depends on the discharge region and pressure. The emission bands of the first positive nitrogen system give the red color of the ionization waves, however, the highest intensities under these conditions are recorded on the lines of the second positive and first negative nitrogen systems. It is shown that when the pressure decreases to 0.04 Torr or less, the spectrum and color of the streamer discharge, while maintaining the amplitude of the voltage pulses, changes significantly. New lines and bands appear in it, including intense lines of atomic hydrogen, which is due to an increase in the reduced electric field strength, respectively, in the electron temperature. This leads to the dissociation of molecular gases that are part of the air, as well as those adsorbed by the chamber walls. Keywords: emission spectra, streamer discharge, air, low pressures.
Broadening and shifting of the carbon monoxide rotational lines in a wide temperature range: calculations in the framework of the classical impact theory for CO-He
Authors: Ivanov S.V.
Published: March 2023

The classical impact theory of Gordon is used to calculate half-widths and shifts of spectral lines of the pure rotational band of 12C16O isotopologue broadened by He. Two rotational transitions are examined: J=0-> J=1 and J=1-> J=2 in the wide temperature range from 1.3 to 600 K. The main purpose of this work is the study of the validity limits of classical impact theory at low temperatures. Dynamical calculations were performed on the accurate CO-He ab initio potential energy surface. The results of calculations are in good agreement with experimental data with the exception of very low temperatures. The contributions of collisions of different types (elastic, inelastic, quasibound complexes) are clearly examined in the classical picture frame. It is shown that the mismatches between classical theory and measurements are caused by the too high contribution of elastic collisions into broadening and shift in the present variant of theoretical model. The idea in the spirit of the Weisskopf theory is applied to try to diminish this contribution. The classical results are also compared with the results of fully quantum close coupling calculations made with using four CO-He interaction potentials. The roots of discrepancies at low temperatures as well as the virtues and the shortcomings of a classical approach are discussed. Keywords: collisional line broadening and shift, intermolecular interactions, classical impact theory, classical trajectory method, quasibound complexes.
Self-Trapping Phenomenon in an Exciton-Polariton System When the Lower Polariton Branch is Pumped by Two Laser Pulses with Close Frequencies
Authors: Vasilieva O.F.  , Zingan A.P.  , Vasiliev V.V.
Published: March 2023

The dynamics of exciton-polariton states in a semiconductor microcavity is studied under pumping of the state corresponding to the lower polariton branch, taking into account single-mode and intermode elastic polariton-polariton interactions. In this case, pumping is carried out by two laser pulses with close frequencies. It is shown that at the initial phase difference equal to theta0=π/2, the regime of quantum self-trapping of exciton-polaritons is observed. Periodic and aperiodic modes of evolution of a system of quasiparticles are obtained. Keywords: exciton-polariton states, quantum self-trapping, periodic and apeiodic regimes.
Extremely short pulses in an anisotropic optical medium containing carbon nanotubes with metal conduction
Authors: Dadashyan L.H.  , Trofimov R.R.  , Konobeeva N.N.  , Belonenko M.B.
Published: March 2023

In this work, we study the interaction of extremely short pulses with a nonlinear anisotropic optical medium with carbon nanotubes (armchair and zigzag type) with metallic conductivity. The dependence of the pulse shape, width, and intensity on the nanotube chirality indices is analyzed. The most appropriate type of carbon nanotubes is substantiated for providing localized propagation of an electromagnetic field in a medium with anisotropic properties. Keywords: optical anisotropy, extremely short pulse, carbon nanotubes, metallic conduc.
Self-consistent three-dimensional model of ultrashort terahertz pulse amplification in a laser-induced nonequilibrium plasma channel in xenon
Authors: Bogatskaya A.V.  , Volkova E.A.  , Popov A. M.
Published: March 2023

The propagation and amplification of ultrashort terahertz pulses in a nonequilibrium photoionization plasma channel formed in xenon by a powerful femtosecond UV laser pulse is studied in three-dimensional geometry. The study is based on the self-consistent numerical integration of the second-order wave equation in cylindrical geometry and the Boltzmann kinetic equation in the two-term expansion to describe the electron velocity distribution function in the spatially inhomogeneous nonequilibrium plasma of the channel. Keywords: nonlinear optics, terahertz radiation, nonequilibrium plasma channel, numerical simulation.
Electron spin resonance of NV-=SUP=-(-)-=/SUP=--centers in synthetic fluorescent diamond microcrystals under conditions of optical spin polarization
Authors: Osipov V.Yu.  , Bogdanov K. V.  , Rampersaud A.  , Takai K.  , Ishiguro Y.  , Baranov A.V.
Published: March 2023

Electron paramagnetic resonance (EPR) spectra of synthetic diamond microcrystals with NV(-)-centers have been studied. It is shown that under the conditions of irradiation of the material with the light of a xenon lamp at low temperatures ~ 100 K, the intensities of the EPR signals corresponding to the "forbidden" (Delta ms=2) and low field allowed (Delta ms=1) transitions are amplified several times, while the EPR signals from paramagnetic nitrogen and impurity nickel in the charge state -1 practically do not change. This is due to a change in the population of levels of the ground triplet state of the NV(-)- center and the optical polarization of spins in the state ms=0 of the triplet level. Keywords: nitrogen-vacancy centers, synthetic diamond, electron paramagnetic resonance, spin polarization, luminescence.
Distribution of brightness, temperature and radiation force in multizone pyrotechnical flare
Authors: Lepaev A. N.  , Ksenofontov S. I.  , Vasilyeva O. V.  , Kokshina A. V.  , Kazakov V. A.
Published: March 2023

Processing of pyrotechnic composition flare image by developed software allows you to select the shape and dimensions of the shining body of the flare, divide it into zones according to the brightness level, determine the temperature and radiation force of each isolated zone. The temperature of the flare zone was determined by comparing the brightness of the flare zones with the brightness of a known object. In the work shown, the maximum of the temperature in the flare reaches 2523 K, and the radiation force in the visible spectrum is 442 W/sr. Keywords: pyrotechnic composition, flare, zone, brightness, temperature, radiation force, luminous body.
Study of the mechanical strength of thin silicon wafers in the dependance on their surface treatment during thinning
Authors: Kozlov V. A.  , Nikolaev V. I.  , Shpeizman V. V.  , Timashov R. B.  , Pozdnyakov A. O.  , Stepanov S. I.
Published: March 2023

The mechanical strength of silicon wafers of 100 μm thickness was studied. Loading of the wafers was carried out by the "ring-on ring" method, stress and deflection under the small ring were determined by finite element modeling. The validity of the calculation model was checked by comparing the dependences of the deflection under the small ring on the load obtained in the experiment and by the simulation. The effect of methods of wafers obtaining and their surface treatment on the strength, as well as the connection between the strength and surface roughness characteristics were shown. Keywords: silicon, strength, chemical polishing treatment, surface roughness.
Spintronic emitter of terahertz radiation based on two-dimensional semiconductor tungsten diselenide
Authors: Buryakov A.M.  , Gorbatova A. V.  , Avdeev P. Yu.  , Bezvikonny N. V.  , Ovcharenko S. V.  , Klimov A. A.  , Stankevich K. L.  , Mishina E. D.
Published: March 2023

We propose a new spintronic emitter based on the Co/WSe2 heterostructure. The time of ultrafast demagnetization is estimated. It is shown that the two-dimensional ferromagnet/semiconductor interface exhibits strong spin-orbit coupling. Approaches to the description of the mechanism of generation of THz radiation are implemented. It is shown that the polarization orientation of THz radiation depends on the direction of magnetization Keywords: Spintronic emitter, THz radiation, two-dimensional semiconductors, Co/WSe2, THz polarization.
Peculiarities of Generation of Extreme Electromagnetic Fields in a Dielectric Mesoscale Sphere with the presence of the Environment
Authors: Minin I. V.  , Minin O. V.  , Zhou S.
Published: March 2023

The results of numerical simulation based on the Mie theory of the effect of superresonance (high-order Fano resonance) for a mesoscale dielectric sphere immersed in air are presented, since the environment in the form of a vacuum is an idealization that is almost never realized in nature. Using the example of a particle with a refractive index of 1.5 and a size parameter q~ 26 and q~ 38, it was demonstrated for the first time that a change in the refractive index of the environment by 2.4· 10-4 leads to a decrease in the field intensity in the region of the shadow pole of the sphere by an order of magnitude and a shift of the resonant value of the size parameter q to the short-wavelength region. In this case, the relative intensities of the resonant peaks for both the magnetic and electric fields in the vicinity of the poles of the sphere in the optical range can reach values characteristic of a particle in vacuum (of the order of 106-107), with an appropriate adjustment of the resonant size parameter. Keywords: high-order Fano resonance, superresonance, mesotronics, field intensity, extreme magnetic field.
Electronic Health Record–Nested Reminders for Serum Lithium Level Monitoring in Patients With Mood Disorder: Randomized Controlled Trial
Authors: Seki Tomotsugu , Aki Morio , Furukawa Toshi A , Kawashima Hirotsugu , Miki Tomotaka , Sawaki Yujin , Ando Takaaki , Katsuragi Kentaro , Kawashima Takahiko , Ueno Senkei , Miyagi Takashi , Noma Shun'ichi , Tanaka Shiro , Kawakami Koji
Published: March 2023

Background

Clinical guidelines recommend regular serum lithium monitoring every 3 to 6 months. However, in the real world, only a minority of patients receive adequate monitoring.

Objective

This study aims to examine whether the use of the electronic health record (EHR)–nested reminder system for serum lithium monitoring can help achieve serum lithium concentrations within the therapeutic range for patients on lithium maintenance therapy.

Methods

We conducted an unblinded, single-center, EHR-nested, parallel-group, superiority randomized controlled trial comparing EHR-nested reminders with usual care in adult patients receiving lithium maintenance therapy for mood disorders. The primary outcome was the achievement of therapeutically appropriate serum lithium levels between 0.4 and 1.0 mEq/L at 18 months after enrollment. The key secondary outcomes are included as follows: the number of serum lithium level monitoring except for the first and final monitoring; exacerbation of the mood disorder during the study period, defined by hospitalization, increase in lithium dose, addition of antipsychotic drugs or mood stabilizers, or addition or increase of antidepressants; adherence defined by the proportion of days covered by lithium carbonate prescription during the study period.

Results

A total of 111 patients were enrolled in this study. A total of 56 patients were assigned to the reminder group, and 55 patients were assigned to the usual care group. At the follow-up, 38 (69.1%) patients in the reminder group and 33 (60.0%) patients in the usual care group achieved the primary outcome (odds ratio 2.14, 95% CI 0.82-5.58, P=.12). The median number of serum lithium monitoring was 2 in the reminder group and 0 in the usual care group (rate ratio 3.62; 95% CI 2.47-5.29, P<.001). The exacerbation of mood disorders occurred in 17 (31.5%) patients in the reminder group and in 16 (34.8%) patients in the usual care group (odds ratio 0.97, 95% CI 0.42-2.28, P=.95).

Conclusions

We found insufficient evidence for an EHR-nested reminder to increase the achievement of therapeutic serum lithium concentrations. However, the number of monitoring increased with relatively simple and inexpensive intervention. The EHR-based reminders may be useful to improve quality of care for patients on lithium maintenance therapy, and they have potentials to be applied to other problems.

Trial Registration

University Hospital Medical Information Network Clinical Trials Registry UMIN000033633; https://tinyurl.com/5n7wtyav
Spatiotemporal Heterogeneity of the Influence of Air Pollution on Influenza in Fuzhou: Spatiotemporal Weighted Regression Model (Preprint)
Authors: Chen Qingquan , Zheng Xiaoyan , Xu Binglin , Sun Mengcai , Zhou Quan , Lin Jin , Que Xiang , Zhang Xiaoyang , Xu Youqiong
Published: March 2023

BACKGROUND

Air pollution has a growing impact on human health. Air pollution factors such as CO, PM10, SO2, NO2 and O3 are closely related to influenza. Most previous studies ignored the possible spatial heterogeneity of numerical change rates in geospatial processes.

OBJECTIVE

This study aims to explore the spatiotemporal heterogeneity of the impact of air pollution on influenza and to provide a new method and tool for infectious disease surveillance.

METHODS

A global ordinary linear regression (OLR) model, geographically weighted regression (GWR) model, and spatiotemporal weighted regression (STWR) model were used to explore the potential spatiotemporal relationship between air pollution factors and influenza. In addition, the dynamic time warping (DTW) and K-medoids algorithms were used for time series clustering of county coefficients.

RESULTS

The average R-squared (R2) value of STWR was higher than that of GWR, especially when the influenza case count changed rapidly, and the STWR fitting results were also significantly advantageous. We found that even the same meteorological air pollution factors may have two diametrically opposite effects on influenza case counts in different regions. In addition, the relationship between air pollution factors and influenza epidemics may change over time in some areas.

CONCLUSIONS

STWR could be a useful tool to explore the spatiotemporal heterogeneity of air pollution and influenza in geospatial processes. The surface of spatiotemporal heterogeneity between different air pollution factors and influenza can also support decision-making and improve influenza epidemic prevention and control measures.

CLINICALTRIAL

None.
SEMI-AUTONOMOUS GROUPS AND WORK MANAGEMENT IN AGRIBUSINESS: THE PROPOSAL OF A THEORETICAL MODEL IN THE AGRICULTURAL SUPPLY CHAIN
Authors: Senna do Amaral Caio
Published: March 2023

The implementation of autonomous working groups has been a common focus of socio-technical systems approaches to work redesign. There is an interest in understanding the design, structure and performance of semi-autonomous teams in different markets and economic sectors. Thus, this work seeks to propose a theoretical model that correlates the main factors considered in semi-autonomous teams in the agricultural supply chain. In addition, we seek to know the indirect effect of these factors and their relevance. To this end, exploratory research in the field of sociotechnics is applied to identify the variables of the model and previous studies. Data collection is done by a survey in 4 countries of the agricultural market in Latin America and the model is validated from the modeling of structural equations with Smart PLS SEM. The results of the study indicate that the adoption of work autonomy does not have a direct effect caused by the management of human resources (HR) . Furthermore, the adoption of work autonomy is moderated by work remuneration. Finally, the indirect effect that HR management has on the adoption of semi-autonomous teams may be related to its own functioning in the organization. HR has an important influence on enterprise communication and conflict work.
Modelo de metadatos para preservación en la edición del libro digital
Authors: Ramírez-Molina Ana Yuri
Published: March 2023

Se propone un modelo que orienta a los productores de libros en la integración de metadatos durante el proceso de edición, el cual se generó con la aplicación del método cualitativo y el uso de herramientas y buenas prácticas en ingeniería de software; todo esto basado en los modelos FRBR, OAIS y el ciclo de vida del libro, que requirió la definición de un proceso editorial a partir de una muestra de casos tipo y la identificación de los metadatos básicos para preservación del libro digital desde su perspectiva como software y sus atributos de calidad.
Automatic Stair Climbing Trolley
Authors: Goyal Nitin , Soni Namita , Khurana Monika , Gupta Monu , . Sumita
Published: March 2023

Abstract: A step climber is fundamentally a streetcar which is being utilized to convey the heap or baggage, so that moving turns out to be a lot more straightforward through steps and labor is decreased successfully. Additionally, it is broadly utilized in ventures and assembling plants where lift or lifts frameworks are not accessible, so that stacking or dumping of material becomes more straightforward and furthermore builds the general consumer loyalty and market prerequisites to which the business is trading or bringing in. Likewise Step climbing streetcar chiefly comprises of 2 kinds either physically worked (TriStar Wheel Streetcar) or it tends to be driven consequently utilizing battery and mechanized track framework. For our situation it is completely computerized and just the administrator needs to provide a guidance utilizing the handle and the streetcar will be pushed or pulled up or down strides on a flight of stairs. It depends on rack and pinion component in which the alternating movement of pulley or stuff is sent to a straight responding movement. Additionally, the stuff box mechanized framework is utilized to diminish the stuff proportion and subsequently to build the precise speed of the associated shaft. Alongside that polymer crawler tracks are being utilized which will be at the foundation of the streetcar to give an excellent hold and contact with the surface which is the main piece of the streetcar to choose its movement over the steps
Influence of Boron on Yield of Okra and Soil Microbial Activities in Inceptisols
Authors: Meher Narayani , Patra Ranjan Kumar
Published: March 2023

Abstract: The study entitled “Influence of boron on yield of Okra and soil microbial activities inInceptisols” was carried out at E Block of Central Farm, Regional Research & Technology Transfer Station (RRTTS), OUAT, Bhubaneswar during January to April, 2021 with the objectives of studying the effect of foliar spray of boron on yield of Okra and the soil microbial activities. The experiment was laid out in RBD with ten treatments replicated thrice. The treatments included one on B control (only soil test dose NPK), NPK + 1.0 KgB/ha soil application and eight treatments of foliar application of B @ 0.25, 0.5, 0.75, and1.0% borax sprayed once or twice at 25 and/or 50 DAS. Plant and soil samples were collected one week after 1st and 2nd spraying for analysis of biometric and microbiological parameters including enzyme activities. The bacterial, fungal and actinomycetes population of soil in different treatments measured one week after 1stand 2 ndfoliar spray of Brecordeda significant increase in number of count in all treatments including the one applied with B as basal in soil over that in control. A reduction in population of fungus (2-16%) and actinomycetes (9-43%) measure done week after 2nd spray was observed over that recorded after 1st spray. In contrast, an increase in population of bacteria (0-28%) measured one week after 2nd spray was observed over that recorded after 1st spray. The urease activity of soil due to different boron treatments varied significantly among the treatments from 25.2 to 38.6 µg NH4+N݃ −1 soil/2h. The dehydrogenase activity of soil due to different boron treatments varied significantly among different treatments from 0.7 to 46.6 µg TPF݃ −1 soil /24h. The urease and dehydro genase activities of soil measured after 2nd foliar spray of B increased with application of B to okra irrespective of dose and application methods.
Family Economic Status, Resilience, and Subjective Well-being Of Parents Whose Children Have Autism Spectrum Disorder
Authors: Wu Zhongliang , Chen Yirong , Wang Peilin
Published: March 2023

We examined the relationship between family economic status and subjective well-being in a sample of 126 parents whose children have autism spectrum disorder, and also assessed the mediating role of parents' resilience. Participants completed the Family Economic Status Questionnaire,
the Resilience Questionnaire, and the Subjective Well-Being Questionnaire. The results showed that family economic status was significantly associated with parents' subjective well-being, and that resilience significantly mediated this relationship. These findings provide novel evidence of
the psychological mechanism of how family economic status affects subjective well-being, and contribute to understanding of how family economic status is associated with subjective well-being among parents of children with autism spectrum disorder. Our findings indicate that developing interventions
to improve resilience is a practical way to reduce the impact of family economic status on the subjective well-being of parents whose children have autism spectrum disorder.
The Effect of Inconsistent Online Reviews on Customers' Purchase Intention in E-commerce: a Psychological Distance Perspective
Authors: Wang Jiaying , Pan Di , Zhao Zhijie , Liu Yang , Han Xiaowei , Gao Ju , Wang Meng
Published: March 2023

Inconsistent online reviews, which affect customers' purchase intention, are gaining increasing attention. In this paper we analyzed the mechanism of inconsistent online reviews that are posted by the same reviewer on customers' purchase intention. Our research was based on a psychological
distance theory perspective, specifically in three dimensions: temporal distance, social distance, and hypothetical distance. Our findings were as follows: First, inconsistent online reviews had a significant negative effect on customers' purchase intention, and product type (experience vs.
search) played a moderating role. Second, when customers faced inconsistent online reviews, temporal, social, and hypothetical distance significantly affected their purchase intention but this differed according to product type. The effect of temporal distance was more significant for a search
product than it was for an experience product; however, social distance and hypothetical distance had more significant effects for the experience product. Our research conclusions enrich the literature on online reviews and provide suggestions for sellers on e-commerce platforms to manage
inconsistent reviews according to product type.
Physical Activity, Individual Emotions, and Prosocial Attitudes: the Role Of Citizen Identity
Authors: Shi Weijin , Zhu Xiaobo , Shi Junfeng , Xu Lijun , Jiang Wenyi
Published: March 2023

Using data from 10,154 participants in the Chinese General Social Survey, we examined the effect of physical activity on emotions and prosocial attitudes, and the moderating effect of citizen identity on the positive effect of physical activity. The findings showed that physical activity
was positively related to happiness and social trust perception, and negatively related to depression. This study further found that the effects of physical activity on improving happiness and social trust and decreasing depression were stronger among urban compared to rural participants.
We discuss conclusions and implications for practice.
Exchange rate volatility transmission in emerging markets
Authors: Umoru David , Effiong Solomon Edem , Umar Salisu Shehu , Okpara Enyinna , Iyaji Danjuma , Oyegun Gbenga , Iyayi Davidson , Abere Benjamin Olusola
Published: March 2023

Exchange rate volatility, or a continuous fluctuation in the currency rate has been a major concern in recent years due to its impact on economic activities. No wonder concerns have been raised regarding the connection between exchange rate fluctuations and their effects on the overall economy. The motivation for the study is based on the fact that most emerging economies experiencing inflationary tendencies are more likely to experience a high degree of exchange rate volatility persistence. Such a scenario seems catastrophic to developing economies where large currency movement are more frequent. BEKK-GARCH and DCC-GARCH models were utilized to estimate volatility transmission and persistence respectively in selected African countries. Results show there is presence of spill-over effect in exchange rates of all countries. BEKK-GARCH estimates show that negative effects of exchange rate of one country had deleterious effect on exchange rate of another. We found evidence in favour of bidirectional exchange rate volatility transmission amongst all exchange rates of countries in the study. Dynamic conditional correlation (DCC) model estimates further revealed Ghanaian cedi top list of countries exchange rate volatility persistence followed by naira with a value of 1.0974. Efficient structural transformation is needed to mitigate structural problems that generate inflation in these countries.
Threat Modeling Through Detection, Prevention & Classification of Leading-to-Vulnerability Code Smells (LVCs)
Authors: Malik Shah Jahan , Batool Komal
Published: March 2023

Code smells are usually ignored as they are neither a bug, nor a
vulnerability. Quality engineers and, specially, security architects
ignore them. As some of the code smells may lead towards vulnerability
which may further be exploited by the hackers, therefore, such
vulnerable code smells must be considered and further mitigated by
threat modelers. In order to provide a repository of such code smells to
security designers, a process had been devised and experimented. During
the execution, various web applications had been passed through SAST and
resulting code smells had been extracted and then inserted into a new
dataset via Python. Later on, the code smells deposited in the dataset
had been classified into various categories. Finally, machine learning
algorithms had been assessed through WEKA and the fastest as well the
most accurate algorithm had been selected. Current security standards do
not ensure mitigation of threats caused by leading-to-vulnerability code
smells, till to date. Typically, threat modelers assess security of a
system through modeling threats via CIA, STRIDE and LINDDUN standards on
its DFD and various architectural / infrastructural diagrams. Unless,
they do not know that exploitable vulnerability still exists even after
performing all secure design principles, the system would still be open
to attacks. Our hypothesis was that vulnerable code smells still exist
even after complying with all threat modeling standards. In the end,
descriptive and inferential statistics had been used to analyse the
results as well as test our hypothesis.
Three-Phase Steady-State Models of Distributed Generators with Different Control Strategies
Authors: Yang Qijia , Du Zhengchun , Zhang Yu , Yuan Xiaotian
Published: March 2023

This paper proposes three-phase steady-state models for distributed
generators (DGs) with different control strategies and an augmented
rectangular load flow method is used for three-phase distribution
systems. For two kinds of DGs with power electronic devices:
photovoltaic power generators and doubly-fed induction generators, the
nodal voltage equations and the output power equations are derived.
Moreover, under the unbalanced conditions, the control strategies are
applied and formulated as the function of the nodal voltage and the
injected current to reduce the effects caused by the negative-sequence
components. Furthermore, the models are incorporated into an augmented
rectangular load flow method with nodal voltage and injected current as
state variables in three-phase systems. Case studies are conducted to
verify the correctness and accuracy of the proposed models by comparing
the results obtained from MATLAB and PASCAD.