bluuebunny/crossref_metadata_2025 huggingface dataset:
Basilar Predominant Emphysema: Thinking beyond Alpha-1-Antitrypsin Deficiency
Authors: Yeung Ho-Man , Gaffaney Lauren
Published: December 2022

Basilar predominant emphysema, or disproportionate emphysematous involvement of the lung bases compared to the apices, is an uncommon radiographic pattern of emphysema traditionally associated with alpha-1-antitrypsin deficiency (AATD). We present a case of a 59-year-old female with 41 pack-year tobacco use, Stage IV COPD with supplemental oxygen, and bibasilar predominant emphysema who successfully underwent bronchoscopic lung volume reduction. She presented with recurrent hospitalizations for frequent exacerbations. After lung reduction, the patient displayed improvement in functional status without hospitalizations at the 15-month follow-up. Careful history taking is essential for any patients diagnosed with lower lobe emphysema to elucidate the underlying etiology. This case challenges the notion that basilar emphysema is sensitive or specific for AATD and emphasizes that this pattern of emphysema has a broad differential diagnosis and alternative etiologies should be considered. Our patient was ultimately diagnosed with smoking-related emphysema, with atypical bibasilar involvement. Furthermore, basilar predominant emphysema should be considered a separate entity from its apical predominant counterpart.
Fuzzy Clustering of Infrared Image Features Based on Lazy Snapping Algorithm
Authors: Hong Yutian , Wang Jianyong
Published: December 2022

Substation equipment is an important part of the power grid, which undertakes the function of power transmission and conversion and directly affects the operation status of the whole substation and power system. When the substation equipment is in an abnormal working state, the temperature
will change. Therefore, the temperature information of the substation equipment is used as the judgment basis to complete the judgment of the working state of the equipment, which can realize the fault diagnosis of the substation equipment and ensure that the power system works in a safe and
reliable environment. In this paper, according to the characteristics of the transformer equipment shape stability, the invariant moment is used to extract the infrared image feature of the transformer equipment. The support vector machine is used to complete the classification and recognition
of the image. Hu invariant moments and Zernike invariant moments are used to extracting features respectively, and the results of feature extraction are used as training samples to train support vector machines for recognition. Using the Lazy Snapping algorithm to complete the infrared image
segmentation processing of substation equipment, the target region is extracted from the background completely, and the segmentation image information is completed. In the experimental test, through the test of the recognition model constructed by invariant moments, it is proved that the recognition
accuracy of Zernike invariant moments combined with support vector machine in this paper is higher, and the Lazy Snapping algorithm has obvious advantages in segmentation quality compared with other methods. Therefore, the method of intelligent identification and diagnosis of the thermal fault
of substation equipment studied in this paper has important practical significance for the establishment of an online diagnosis system.
Dynamic Channel Allocation Algorithm for Heterogeneous Cellular Networks in Power Communication
Authors: Liu Huiying , Xi Bo , Wang Ying , Guo Yuling , Hou Botao
Published: December 2022

In order to solve the problems of low efficiency and high noise in the application of modern channel resource allocation methods, an anti-interference dynamic channel allocation algorithm for heterogeneous cellular networks in power communication is proposed. First, the heterogeneous
cellular network model of power communication and the architecture of power multi-channel transmission platform are constructed. Then, according to the receiving and noise characteristics of communication resources, the anti-interference algorithm of power communication resources under multi-channel
transmission is designed to obtain the communication index of power communication heterogeneous cellular network, and the anti-interference dynamic allocation algorithm of power communication heterogeneous cellular network resources is realized, Finally, the comparison method is used to prove
the practicability of the method in this paper. The experimental results show that the average value of communication resources after interference suppression is 950 Mb, the average signal to noise ratio is 10.5 dB, and the resource allocation time is less than 3 min after 5000 iterations,
which is superior to the comparison method. The method has good channel anti-interference ability and channel resource allocation efficiency, and has certain application value.
Research on Speed Control of Three-Phase Alternating Current Asynchronous Motor Based on Back Propagation Neural Network Tuning Proportion Integration Differentiation Control
Authors: Gao Peichang , Yang Peihong
Published: December 2022

In order to optimize the speed control effect of three-phase AC asynchronous motor, the speed control method of three-phase AC asynchronous motor based on BP neural network tuning PID control is studied. The mathematical model of the three-phase AC asynchronous motor is constructed.
After the three-phase AC asynchronous motor is transformed into a computer analytical calculation mode in the mathematical model mode, the current operating speed of the three-phase AC asynchronous motor is measured by the speed tracking measurement method of the three-phase AC asynchronous
motor. The speed control method of three-phase AC asynchronous motor based on BP neural network tuning PID control is adopted to realize the speed control of three-phase AC asynchronous motor. The experimental results show that the proposed method can accurately measure the current running
speed of three-phase AC asynchronous motor and complete the speed regulation of three-phase AC asynchronous motor within 15 s. It has significant application value in similar methods.
Design of Ultra-Wideband Patch Antenna Based on Folding-Strip-Shaped Metamaterial Concepts
Authors: Han Bo , Wang Shibing
Published: December 2022

In this paper, a folding-strip-shaped compact ultra-wideband high gain microstrip patch antenna using planar metamaterial concepts has been proposed. The top patch of the antennas has been made up of folding strips while the bottom layer etched with periodically distributed cross strip-line
gaps. The patterned patch and the ground layer have formed the left-handed characteristics which have great impact on the ordinary patch antenna. The proposed antennas have compact size 27.6×28.8 square millimetres and can be fabricated by Rogers 5880 substrate or low cost FR4 substrate.
Results indicate that the impedance bandwidth (below-10 dB return-loss) is from 3.7 GHz to more than 15.3 GHz with the simulated average gain more than 4.5 dB for Rogers 5880 substrate and 5.1 dB for FR4 substrate, respectively. Good agreement between the computation and experiment is achieved
convincing that the proposed antennas have reliable applications for ultra-wideband wireless communications.
A Novel Frequency Double Millimeter Wave Signal Generation Scheme with Optical Carrier Suppression Based on a Single Polarization Modulator
Authors: Wang Dongfei , Wang Xiangqing , Yang Xiaokun , Liu Bin , Zhang Lan , Yang Zufang , Wu Baohong
Published: December 2022

In the work, a novel and simple double frequency millimeter wave (mm-wave) signal generation scheme with optical carrier suppression (OCS) enabled by a single polarization modulator is proposed. The scheme is a simple structure to achieve the mm-wave signal generation, and the core
of which just depend on a polarization modulator and two linear polarizers, and electronic circuits is needless to control the drift of modulator bias points and no optical filters is needed to filter out undesirable harmonics. The polarization angle of the first linear polarizer (POL-1) is
set to 45°, the polarization angle of the second linear polarizer (POL-2) is set to −45° to suppress even order optical sidebands, and the modulation index of polarization modulator (POLM) is adjusted to realize small signal modulation. Based on mathematical reasoning and computer
simulation, the proposed scheme is well feasible. Simulation results show that using 20 GHz RF signal to drive the POLM, 40 GHz mm-wave signal with 47 dB optical sideband suppression ratio (OSSR) and 41.19 dB radio frequency sideband suppression ratio (RFSSR) was obtained.
A Novel Secondary Side Parallel LCD Forward Converter
Authors: Zhu Gao-Zhong , Liu Shu-Lin , Li Xue-Ting
Published: December 2022

Aiming at the shortcomings of the current forward converter, such as low utilization rate of excitation energy, complex circuit structure and single function of magnetic reset technology, a novel secondary side parallel LCD forward converter is proposed. By analyzing the working principle
of the proposed converter, the optimal combined working mode is obtained, which can improve the energy transmission efficiency of the converter, ensure high power transmission and reduce the output voltage ripple. The energy transfer process of the optimal mode is deeply analyzed, the input–output
relationship and the critical inductance expression in this mode are deduced, and the optimization of the parameters of the capacitor and inductance components in the converter is proposed. Finally, according to the parameter optimization design scheme, a prototype of the secondary side parallel
LCD forward converter is developed. The experimental results of the prototype show that the proposed forward converter can not only achieve reliable magnetic reset, but also transmit the excitation energy of the converter to the load side, which effectively improves the efficiency of the converter.
Design and Performance Analysis of X-ray Photoelectric Collector for Logistics Transportation
Authors: Wu Yun
Published: December 2022

The strong conveyor belt has been widely used in mines, ports, wharves, power plants, steel mills, and other fields. It is one of the main transportation equipment in modern production. In coal mine production, the logistics conveyor belt is essential equipment. The increased load can scratch and age the conveyor belt. Then, coupled with the elongation of joints, the equipment fails. This work designs an X-ray Photoelectric (XP) collector for logistics transportation and puts forward the design scheme. This work expounds on the hardware circuit of the XP collector, mainly based on the Image Capture Card (ICC) of the S8865 module and the serial/parallel data acquisition board based on the AD7667 chip. In the test, the Field Programmable Gate Array (FPGA) development tool ISE of Xilinx company is used to design the software of the XP collector to collect logistics X-ray signals. The oscilloscope analyzes the ICC control signal RESET, which repeatedly appears in a certain period. The S8865 module is controlled to collect X-ray signals continuously; the analog output signal of the S8865 module is observed. Under the control of a 1 MHz clock, the S8865 module outputs a stable analog signal. Similarly, observing the differential signal output of the differential processing circuit on the ICC through the oscilloscope finds that the differential signal is consistent with the original signal. Further positive input/output of the signal conditioning circuit of the serial/parallel data acquisition board is observed after the differential signal is switched. The single-ended signal after switching is consistent with the differential signal’s positive input signal.
Research on Failure Diagnosis Method of a Rocket Borne Micro Electro-Mechanical Systems Recorder Based on Fault Tree
Authors: Yang Ming-xing , Dang Lin , Wen Tao
Published: December 2022

With the complexity and diversification of rocket launch tasks, more stringent requirements are put forward for MEMS electronic equipment, which is closely related to the stability and security of rocket. The key components of the rocket-borne electronic system are composed of discrete
components, integrated components and corresponding connected fixed components. The selection, welding and board level connection of each electronic element determine the reliability of the MEMS component. In this paper, the fault tree analysis method is applied to the reliability analysis
of the rocket-borne recorder, and the dynamic fault tree analysis method is introduced to compensate the deficiency of the traditional static fault tree analysis method, finally the simulation comparison with Monte-Carlo analysis method is carried out to verify the effectiveness and feasibility
of the proposed method. The work of this paper is of great significance for establishing the reliability theory of the system and mastering the experience of quick failure diagnosis.
Referring Attention-Deficit/Hyperactivity Disorder: Gaining Perspective From Advanced Practice Providers in Primary Care
Authors: Harris Brian A. , Huntington Noelle , Sideridis Georgios , Chan Eugenia
Published: December 2022

The objective of the current study is to identify provider, patient, and family characteristics associated with pediatric advanced practice provider (APP) decisions to refer to a subspecialist for diagnosis and management of attention-deficit/hyperactivity disorder (ADHD). We conducted a cross-sectional electronic survey of pediatric primary care APPs using member lists of professional organizations. T tests and chi-square analysis were conducted to identify group differences. Most respondents rated themselves as comfortable diagnosing and managing ADHD. We found no significant difference between groups based on comfort level or likelihood to refer. APPs working in suburban settings report significantly lower levels of comfort. Self-designation as the practice’s primary provider for behavioral/mental health concerns had significantly higher levels of comfort and were less likely to refer. In a limited sample, most APPs reported comfort diagnosing and managing ADHD. Activities to identify and ameliorate gaps in ADHD knowledge and care need to consider this growing part of the workforce.
New jig adapted for compression fatigue tests on composite materials
Authors: Gonçalves Vanderlei de Oliveira , Osses Marcelo , Pardini Luiz Claudio
Published: December 2022

This paper presents a new adapted jig to perform quasi-static and fatigue compression tests based on the Combined Loading Compression (CLC), ASTM D6641 standard. This new jig is proposed to enable the performance of both static and fatigue tests accommodating various types of composite materials, different test standards, and coupons sizes. In order to validate the new testing jig, quasi-static and fatigue tests were performed in a composite with bidirectional carbon-fiber fabric type 8HS (Hardness Satin) with epoxy resin matrix. The numer 8 on 8HS means that during the production process, the warp yarn goes over seven before going under one fill yarn. The static and fatigue compressive stresses obtained for the 8HS composite were 643.2 MPa and 436.6 MPa respectively.
Debunking Misinformation About Consumer Products: Effects on Beliefs and Purchase Behavior
Authors: Fong Jessica , Guo Tong , Rao Anita
Published: December 2022

The prevalence of misinformation has spurred various interested parties—regulators, the media, and competing firms—to debunk false claims in the marketplace. This research examines whether such debunking messages provided by these parties can impact consumer purchase behavior. If so, does debunking effectively correct consumers’ misinformed beliefs—an ideal outcome from a policy maker's perspective—or does it merely reinforce correct beliefs, as predicted by biased belief updating? With theory providing contradictory predictions, the authors design and implement a conjoint experiment that enables measurement of willingness to pay under exposure to real-world misinformation and debunking messages. Focusing on three ingredients in product categories where misinformation is prevalent (aluminum in deodorant, fluoride in toothpaste, and genetically modified organisms in food), the authors find that debunking plays an important role in mitigating the impact of misinformation. More specifically, debunking can attenuate the decrease in willingness to pay caused by misinformation by correcting misbeliefs, a promising finding for policy makers. The authors discuss the incentives for firms to debunk misinformation or to introduce new products that conform to misinformation.
Neighbourliness and Situational Factors: Explaining Neighbour Behaviour in Attacks and Rescues of Sikhs in Delhi in 1984 and Muslims in Ahmedabad in 2002
Authors: Dhattiwala Raheel
Published: December 2022

Studies find a direct association of collective violence with relational distance: lower the relational distance, lower the violence. Where people live as neighbours, spatial proximity provides more opportunity for contact. However, perpetrators of mass violence are often neighbours who had previously coexisted with their victims in apparent harmony. Neighbour-on-neighbour violence is a social violation: it shakes our confidence in the collective values of ‘neighbourliness’ and the strength of prior relations. In two state-orchestrated pogroms in India – against Sikhs in 1984 and Muslims in 2002 – the nature of prior neighbour relationships is delineated to identify why some neighbours participated in attacks, others in rescues. A qualitative analysis of 50 survivor affidavits and 41 in-depth interviews enabled reconstructing the texture of these relationships. Neighbourliness and situational factors (timing of attacks; built environment) provided a more nuanced understanding of behaviour. For democratic polities that authorise pogroms, findings challenge existing knowledge on contact and violence.
Stability analysis of sampled-data ODE–Schrödinger systems and its applications to output-feedback stabilization
Authors: Liu Wen-Jing , Liu Jun-Jun
Published: December 2022

In this paper, we are concerned with a sampled-data cascades system, which consists of finite-dimensional dynamics described by ordinary differential equation (ODE) and infinite-dimensional dynamics represented by a Schrödinger equation, based on a zero-order-holder (ZOH) measurement signal. The Schrödinger equation includes reaction and convection terms, and allows more general boundary conditions. Then, a small-gain approach is used to analyze the exponential stability of this hybrid system. This stability analysis is shown to be very useful in the design of sampled-data exponentially convergent observers and exponentially stable output-feedback controllers for some classes of ODE–Schrödinger cascaded system.
Adaptive cruise control method based on hierarchical control and multi-objective optimization
Authors: Piao Changhao , Gao Jun , Yang Qi , Shi Junren
Published: December 2022

Considering the perception of a driver, driving safety, and riding comfort, an adaptive cruise control (ACC) method based on a multi-objective (MO) real-time optimization control algorithm is proposed. The ACC system can be divided into various working modes according to the driver’s perception, as well as the relative state of the host vehicle and the preceding vehicle. To distinguish the driver’s intention in the rapid acceleration, strong deceleration, steady, and larger clearance modes, a fuzzy tool is proposed to solve the problem. To maintain the inter-clearance, velocity, and jerking action in a reasonable region, an MO control algorithm based on model predictive control was used to obtain the optimal control vectors. Moreover, the control vector increment is restricted to suppressing the fluctuation caused by switching among various modes. Simulations were conducted for various scenarios to verify the effectiveness of the ACC method. The simulation results indicated that the driver’s comfort and fuel economy improved by 35.3% and 16.6%, respectively, compared with the linear quadratic algorithm in a complicated driving environment. Various simulation results demonstrated that the MO-ACC controller can reduce fuel consumption while barely sacrificing riding comfort or tracking performance, as compared to the linear quadratic controller.
The Naturalness Bias Influences Drug and Vaccine Decisions across Cultures
Authors: Ji Li-Jun , Lappas Courtney M. , Wang Xin-qiang , Meier Brian P.
Published: December 2022

Past research with North American participants has demonstrated a naturalness bias in the medical context: people prefer natural drugs to synthetic drugs under a variety of situations. Does such a bias exist in other countries (such as China) where cultural values and practices are quite different from those in the United States? We conducted 3 studies ( N = 1,927) to investigate the naturalness bias with drugs and vaccines across cultures with American, Canadian, and Chinese participants. In studies 1A and 1B, participants chose or rated drugs (natural v. synthetic) for a hypothetical medical issue. The drugs were presented as having identical effectiveness and side effect profiles. Study 2 focused on a different medical context, vaccines, and required participants to rate their likelihood of taking vaccines (made from either more natural or more synthetic ingredients) for a harmful virus. The naturalness bias occurred across cultures in studies 1A and 1B, although it was not significant among Chinese participants in study 1B. In study 2, Chinese participants showed a stronger naturalness bias than Americans did, and safety concerns mediated the effect. Perceived safety accounted for the naturalness bias among Americans and Canadians, but did so only among Chinese in study 2. Overall, the results suggest that the naturalness bias in drug and vaccine decision making occurs across cultures, but Chinese participants may be more sensitive to the medical context.

Highlights

The naturalness bias — preferring natural to synthetic drugs or vaccines — occurred across cultures (Americans, Canadians, and Chinese). Chinese participants showed a stronger naturalness bias than Americans did when the medical context was focused on vaccination, and safety concerns mediated this effect. The naturalness bias may influence medical decision making across cultures, but Chinese participants may be more sensitive to naturalness in a vaccine context.
CCL22 and CCL26 are potential biomarkers for predicting distant metastasis in thyroid carcinoma
Authors: Tong Junyu , Jiang Wen , Zhang Xiaoying , Wang Ru , Qiao Tingting , Song Yingchun , Gao Dingwei , Yu Xiaqing , Lv Zhongwei , Li Dan
Published: December 2022

Objectives

Chemokines have been suggested to play significant roles in the progression of malignant cancers. This study aimed to identify the chemokines related to malignant progression in thyroid carcinoma.

Methods

The mRNA expression levels of 52 chemokines were compared between differentiated thyroid cancer (DTC) samples and normal thyroid tissues from The Cancer Genome Atlas database; survival analysis was then performed on the basis of differentially expressed chemokines. A retrospective study was conducted on the level of differentially expressed chemokines in 76 DTC patients. Functional pathway analysis was performed to explore chemokine-related regulatory mechanisms.

Results

We identified 20 chemokines with differentially expressed mRNA levels through publicly available data. High levels of CCL22 and CCL26 were found to be related with metastasis in clinical DTC samples. High levels of CCL22 were found to be significantly related to poor prognosis in DTC patients. Pathway analyses revealed that cytokines might affect cancer progression through cytokine-cytokine receptor and cytokine-interleukin interactions.

Conclusions

CCL22 and CCL26 could serve as prognostic biomarkers in thyroid carcinoma.
CCK regulates osteogenic differentiation through TNFα/NF-κB in peri-implantitis
Authors: Chou LongHang , Chang YaTing , Lan KaiWen , Liu Meng , Lu YuKun , Li XiaoLei , Li PeiRu , Xu Yue
Published: December 2022

Objective

Peri-implantitis is characterized by peri-implant mucositis and alveolar bone resorption. This study investigated cholecystokinin ( CCK) expression and the mechanism underlying its involvement in peri-implantitis.

Methods

mRNA sequencing was performed using the Gene Expression Omnibus database GSE106090. Human bone marrow mesenchymal stem cells (hBMSCs) were pretreated with various concentrations of CCK (0, 10, 30, or 100 nM) for 1 hour before induction in osteogenic differentiation medium for 2 weeks. Alkaline phosphatase (ALP) activity was determined, and the cells were stained with alizarin red. The expression levels of TNFα and the osteogenic markers ALP, RUNX2, and OCN were measured using quantitative real-time PCR. TNFα, phosphorylated P65, and total P65 levels were determined by western blot.

Results

Compared with healthy individuals, 262 and 215 genes were up- and down-regulated, respectively, in the periodontal tissues of patients with peri-implantitis. CCK expression was significantly upregulated in patients with peri-implantitis. CCK reduced ALP activity, osteogenic differentiation, and levels of the osteogenic markers ALP, RUNX2, and OCN. Moreover, CCK promoted levels of TNFα and phosphorylated P65, which is a marker of activation for the NF-κB inflammatory pathway.

Conclusions

CCK regulates osteogenic differentiation through the TNFα/NF-κB axis in peri-implantitis.
CoronaVac, BNT162b2 and heterologous COVID-19 vaccine outcomes in patients with ventricular assist device
Authors: Karahan Mehmet , Kervan Umit , Kocabeyoglu Sinan Sabit , Sert Dogan Emre , Tekce Yasemin Tezer , Yavuz Omer Abdullah , Kucuker Seref Alp , Ozatik Mehmet Ali , Catav Zeki , Sener Erol
Published: December 2022

Background:

A consensus has not yet been reached regarding which COVID-19 vaccine program should be applied in patients with ventricular assist device (VAD). Our aim was to assess the clinical outcome of inactivated, mRNA and heterologous vaccine program in patient with VAD.

Methods:

In this retrospective and cross-sectional study; adult patients who underwent VAD implantation between January 2012 and September 2021 and received any vaccine that were used in Republic of Türkiye for COVID-19, were included. The patients were divided into three groups according to the type of vaccine; “inactivated,” “mRNA” and “heterologous.” Clinical outcomes were analyzed.

Results:

Eighteen patients were in each group in the “inactivated,” “mRNA” and “heterologous” groups. Mean age was 51.6 ± 12 years in “inactivated” group, 42.5 ± 15.5 years in “mRNA” group and 41.1 ± 15.4 years in “heterologous” group. There was no significant difference between the groups in age, gender, body surface area, body mass index and etiology ( p > 0.05). After last dose of vaccines, the number of patients had COVID-19 positive test were three (16.7%), one (5.6%), and two (11.1%) in “inactivated,” “mRNA” and “heterologous” groups, respectively. Pump thrombosis was seen in two patients in “mRNA” group and one patient in “heterologous” group. No pump thrombosis was seen in “inactivated” group. COVID-19-related death or intubation was not observed.

Conclusion:

All vaccine that used for COVID-19 are safe and effective in patients with VAD. In countries that give priority to inactivated vaccines, mRNA vaccines may then be made as boosters.
The ProtekDuo in ECMO configuration for ARDS secondary to COVID-19: A systematic review
Authors: Maybauer Marc O , Capoccia Massimo , Maybauer Dirk M , Lorusso Roberto , Swol Justyna , Brewer Joseph M
Published: December 2022

Objective:

Assessment of the results of the ProtekDuo cannula applied for dedicated right ventricular support with oxygenator in ARDS secondary to COVID-19.

Methods:

Systematic literature search in NHS library, Medline (Pubmed) and EMBASE using appropriate keywords as well as PICOS and PRISMA approach.

Results:

Out of 285 publications found, 5 publications met the search criteria and were included in this review. A total of 194 patients with ARDS secondary to COVID-19 underwent ProtekDuo placement to establish a combination of respiratory [veno-venous extracorporeal membrane oxygenation (V-V ECMO)] and right ventricular support. Patients treated using the ProtekDuo cannula had survival rates between 59% and 89% throughout the five studies, and a significant survival benefit when compared to an invasive ventilation group or compared to dual site V-V ECMO or other double lumen ECMO cannulas. One study focused on extubation and discontinuation of ventilator support, which could be achieved in 100% of ProtekDuo patients. An association for reduced incidence of acute kidney injury (AKI) and use of continuous renal replacement therapy (CRRT) could be shown when the ProtekDuo was used.

Conclusion:

Only limited literature is available for the ProtekDuo in V-P ECMO configuration in the setting of COVID-19 ARDS and should be interpreted with caution. Data on the ProtekDuo is suggestive for lower rates of mortality, AKI and CRRT as compared to other respiratory support modalities.
Characterizing Responses to COVID-19 Vaccine Promotion on TikTok
Authors: Southwick Lauren , Francisco Ashley , Bradley Megan , Klinger Elissa , Chandra Guntuku Sharath
Published: December 2022

Purpose

The Alabama Department of Public Health (ADPH) sponsored a TikTok contest to improve vaccination rates among young people. This analysis sought to advance understanding of COVID-19 vaccine perceptions among ADPH contestants and TikTok commenters.

Approach

This exploratory content analysis characterized sentiment and imagery in the TikTok videos and comments. Videos were coded by two reviewers and engagement metrics were collected for each video.

Setting

Publicly available TikTok videos entered into ADPH’s contest with the hashtags #getvaccinatedAL and #ADPH between July 16 – August 6, 2021.

Participants

ADPH contestants (n = 44) and TikTok comments (n = 502).

Method

A content analysis was conducted; videos were coded by two reviewers and engagement metrics was collected for each video (e.g., reason for vaccination, content, type of vaccination received). Video comments were analyzed using VADER, a lexicon and rule-based sentiment analysis tool).

Results

Of 44 videos tagged with #getvaccinatedAL and #ADPH, 37 were related to the contest. Of the 37 videos, most cited family/friends and civic duty as their reason to get the COVID-19 vaccine. Videos were shared an average of 9 times and viewed 977 times. 70% of videos had comments, ranging from 0-61 (mean 44). Words used most in positively coded comments included, “beautiful,” “smiling face emoji with 3 hearts,” “masks,” and “good.;” whereas words used most in negatively coded comments included “baby,” “me,” “chips,” and “cold.”

Conclusion

Understanding COVID-19 vaccine sentiment expressed on social media platforms like TikTok can be a powerful tool and resource for public health messaging.
The visual records and visual legacies of slavery
Authors: Mongia Radhika
Published: December 2022

How did visual techniques serve to facilitate slave regimes? How can an attention to the visual record enhance our understanding of slavery? In what ways does this record survive in our contemporary visual economy? This essay considers these questions through an analysis of Reconstructing the Landscapes of Slavery: A Visual History of the Plantation in the Nineteenth-Century Atlantic World by Dale Tomich et al. and of the contested practice of “plantation weddings” in an era dominated by the photographic image.
Design and evaluation of a pulsatile flow rotary vane blood pump
Authors: Li Mengtang
Published: December 2022

Artificial cardiovascular organs, termed as mechanical circulatory support (MCS) devices, provide patients with hemodynamics circulatory restoration effectively and vitally but yet are hampered by device-induced adverse events such as thrombotic, embolic and bleeding, which are consequences of blood being chronically exposed to non-pulsatile flow motion and high shear stress. A step forward to better assist heart failure patients, a novel MCS device was proposed aiming at generating a pulsatile blood flow under different systemic vascular resistance and imposing low shear stress on blood elements. Detailed design methods and geometry governing equations were derived first. For this human heart blood circulation application with a flowrate of [Formula: see text] and pressure range around [Formula: see text], a first-generation prototype with a positive displacement of [Formula: see text] directly driven by a [Formula: see text] brushless direct current (DC) motor was designed, manufactured and assembled. Computational fluid dynamics (CFD) simulations and bench top experiments were conducted next to characterize the MCS pump and to verify with mathematical models. Finally, the proposed MCS device-mediated hemolysis index was evaluated via CFD simulations and compared with an FDA-benchmark centrifugal MCS pump. This demonstrates potentially higher device hemocompatibility and paves the way for in vitro test in the future.
A comprehensive survey on the cold metal transfer process in welding similar and dissimilar materials and for cladding
Authors: Shanker Hari , Wattal Reeta
Published: December 2022

The growing use of aluminum in a variety of industries is driving technologists to create practical and effective techniques and processes for joining aluminum alloys. The main aim of this artifact is to critically review and examine the maturity of welding for comparable and differing materials and also for cladding using Cold Metal Transfer. CMT, which stands for Cold Metal Transfer in the acronym, is a modified MIG welding technique. The CMT and its modes are used in similar and dissimilar welding of Al as well as its alloys of 2xxx, 5xxx, 6xxx, and 7xxx series, and with other materials is discussed in detail and compared with other joining methods. The recent advancements in this field with enhanced mechanical properties of Al alloys, as well as high-performance welding techniques, are discussed in this article. The mechanical and microstructural properties of weld like weld strength, microhardness, corrosion behavior, surface morphology, ductility, and fracture mechanism were used to assess the efficiency of the weld. The following aspects of weld bead surface consistency are investigated in terms of bead uniformity along the welding path, bead surface smoothness, and spattering strength. The effort is made to conclude the welding system which is free from all welding flaws, like gas porosity, spattering, and intermetallic formation, resulting in welded joints with the highest mechanical properties. CMT as an advanced welding approach has gained a significant attraction from researchers in investigating it for the cladding process. The geometric and microstructural properties of a clad-like microhardness assessment, and corrosion resistance analyses were used to evaluate the applicability of CMT in the cladding process.
Experimental investigation of a solar still combined with phase change material (RT58) in southern India climatic conditions
Authors: Sahu Susant Kumar , Natarajan Sendhil Kumar , K Arjun Singh , Suraparaju Subbarama Kousik
Published: December 2022

Water is a vital component of human survival. Drinking water is scarce in several large provinces around the world. Only saline water, which may be demineralised and utilised for drinking, is available in this situation. For extended journeys, normal water is required in boats and submarines. Self–demineralised equipment is usually installed in vehicles, but it consumes more conventional gasoline and is, therefore, more expensive. To address this problem, solar still can be used, which has the primary aim of converting seawater into consumable desalinated water. In this work, a solar still with phase change material (PCM) – RT58 which have better thermo-physical properties has been incorporated and investigated for thermo-economic performance. It is observed from the results that the RT-58 PCM achieved a greater yield compared to conventional solar still (CSS) without any PCM as an energy storage material. The productivity of solar still with PCM is increased by 46% relative to CSS. Also, the economic analysis revealed that the solar still with PCM is more economically viable than CSS in terms of cost per litre production of freshwater and payback period.
Vehicle height control based on active suspension with permanent magnet synchronous linear motor
Authors: Liu Chang , Yao Jialing , Jia Yunyi
Published: December 2022

Adjustments in vehicle height and attitude under high-speed steering, emergency obstacle avoidance, and obstacle crossing can significantly improve the safety, mobility, and passing ability of a vehicle. At present, air and hydraulic suspensions are generally used for vehicle body height adjustment, both of which have problems of slow response and complex structures. In this study, a novel method of vehicle body height adjustment based on active suspension with a permanent magnet synchronous linear motor (PMSLM) is proposed. First, active suspension and PMSLM models are established. Then, the vehicle body height controller is designed by hierarchical control, where the upper layer uses PI control to make the vehicle body height track the desired vehicle body height and calculate the desired control force, whereas the lower layer uses the finite control set model predictive current control to make the linear motor track the desired suspension control force. For motor control, the cost function is constructed based on the minimum tracking error between the reference and predicted currents. The forward Euler discrete method is used to deduce the current prediction model for the linear motor. The simulation tests under different road classes and vehicle speeds prove that the active suspension with the PMSLM can effectively adjust the vehicle body height and has a fast response, simple structure, and does not affect ride comfort. The proposed method provides a new concept for short-term vehicle body height adjustments under specific working conditions.
Addressing Low Frustration Tolerance in Students With Learning Disabilities
Authors: Nordman Jenny , Adcock Justin
Published: December 2022

The relationship between frustration tolerance and academic behavior is well documented in the existing literature, specifically in regard to students with learning disabilities. This column addresses these connections and then provides specific strategies to address low frustration tolerance and increase emotional self-regulation in the classroom. By employing these strategies, teachers can improve student behavior, facilitate emotional development, and create a more constructive learning environment.
Investigating the Heterogeneity of Misperceptions: A Latent Profile Analysis of COVID-19 Beliefs and Their Consequences for Information-Seeking
Authors: Stubenvoll Marlis
Published: December 2022

This panel study in Austria in 2020 ( NW1 = 912, NW2 = 511) explores distinct audience segments regarding beliefs in misinformation, conspiracy, and evidence statements on COVID-19. I find that citizens fall into seven segments, three of which endorse unsupported claims: The threat skeptics selectively accept misinformation and evidence; the approvers tend to accept all types of information; and the misinformed believe in misinformation and conspiracy statements while rejecting evidence. Further analyses suggest that the misinformed increasingly sought out COVID-19 threat-negating information from scientific sources, while also overall attending to threat-confirming information. These patterns have practical implications for correcting misperceptions.
Did Minimum Wage Policy Changes Impact Home Health Workforce?
Authors: Yan Di , Temkin-Greener Helena , Pavan Ronni , Yu Hao , Cai Shubing
Published: December 2022

The shortage of home health aides has been exacerbated in recent years partially because of low wages. Minimum wage (MW) policy changes may alleviate this workforce shortage. This study examined the effects of MW policies on wages and employment of home health aides. We performed a county-level longitudinal analysis using 2012 to 2018 national data. The study cohort included 2,496 counties and focused on all workers in the home health industry. Outcome variables included wages and the employment of home health aides. Key variables of interest included the consumer price index adjusted state MW and a set of variables that captured the effect of the Fair Labor Standards Act (FLSA) extension. This study found that home health aides’ hourly wages were $1.00 higher ( p = .011) in states that increased their MWs from below $8 to above $10. The FLSA extension was associated with $1.15 higher wages in states with higher MWs (i.e., state MW above $10 in 2014). The FLSA extension was associated with higher employment of home health aides in less-competitive markets, rather than high- or average-competitive markets. This study suggests that state MW increases combined with the FLSA extension may help maintain the current home health workforce and improve their wages.
Conner’s Continuous Performance Test and Adult ADHD: A Systematic Literature Review
Authors: Pagán Antonio F. , Huizar Yazmine P. , Schmidt Adam T.
Published: December 2022

Objective:

ADHD is a neurodevelopmental disorder affecting millions of adults worldwide. Continuous performance tests (CPTs) are widely used as assessment and diagnostic tools; however, their use in diagnosing undiagnosed ADHD in adults has been questioned due to their lack of specificity and sensitivity. This review sought to outline relevant findings concerning the diagnostic utility of the Conner’s Continuous Performance Test (CCPT) in adults.

Method:

This systematic review followed the a priori guide outlined by the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) statement. Articles were gathered from PsycINFO, PsycArticles, Cochrane, Scopus, Google Scholar, and PubMed.

Results:

Thirty-five articles were reviewed and analyzed. Most articles reviewed used outpatient and university populations. Moderate reliability, subpar discriminant and ecological validity, and mixed sensitivity and specificity were noted.

Conclusion:

The results of this review lend support to previous critiques of the CCPT’s diagnostic and utility as a treatment measure.
Perceptions of Health Insurance Among Self-employed Korean Immigrants From South Korea in the United States
Authors: Jeong Chung Hyeon , Oh Hyunsung , Palinkas Lawrence A. , Lusenhop Will
Published: December 2022

Korean Americans in the United States are more likely than other Asian ethnic groups to lack health insurance despite their high education and economic prosperity. According to the model of health service selection, immigrants’ perceptions of the health care system and health care behaviors in their host country are affected by sociocultural referents including premigration health care experience in the country of origin. This study explored Korean immigrants’ perceptions of health insurance and their intentions to purchase and maintain health insurance in the United States. We conducted in-depth interviews with 24 self-employed Korean immigrants who migrated from South Korea and were living in the Greater Los Angeles area in 2015. Participants generally had negative perceptions of U.S. health insurance in terms of cost, benefits, simplicity, and accessibility. Coupled with their positive experiences with the single-payer, universal health insurance in South Korea, respondents evaluated U.S. health insurance as not worth purchasing, and indicated they would not maintain health insurance once the individual mandate of the Affordable Care Act was abolished. On the contrary, respondents who immigrated prior to the establishment of the Korean universal health insurance in South Korea were relatively satisfied with U.S. health insurance and had maintained health insurance for substantial periods of time. Korean immigrants’ premigration health care experiences appeared to influence their decisions to purchase health insurance in the United States and their intention to maintain health insurance. The study findings highlight the necessity of tailored health education that takes into account sociocultural determinants of health coverage among immigrants.
Seismic performance of concrete-filled steel tube columns using ultra-high-strength steel under long-period ground motion demands
Authors: Hayashi Kazuhiro , Inamasu Hiroyuki
Published: December 2022

The long-period ground motions observed in recent subduction-zone earthquake events (e.g., 2011 Tohoku earthquake in Japan) have subjected high-rise buildings to large numbers of lateral cyclic deformations. Concrete-filled steel tube (CFT) columns, which are often utilized in high-rise buildings in Japan, have been studied under lateral demands with a few loading cycles. However, their seismic performance under a larger number of repeated loading cycles is a considerable concern for future seismic events. Moreover, the use of ultra-high-strength steel materials in CFT columns has recently gained popularity. However, studies on CFT columns made using ultra-high-strength steel materials are still limited. In this study, the seismic performance of CFT columns made using conventional steel or ultra-high-strength steel were investigated experimentally under repeated lateral loading cycles. Four cantilever CFT column specimens were tested with a combined constant compressive axial loading and cyclic symmetric lateral loading. Each specimen was tested with two different lateral loading protocols: the conventional protocol with two cycles at each drift amplitude level, and a second protocol with twenty cycles at each amplitude level to represent the lateral drift demand under a long-period ground motion. The effects of the number of loading cycles on the seismic performance of the CFT columns are discussed. Based on the experimental observations, design recommendations are also presented. Moreover, an approach is proposed to estimate the onset of local buckling of the CFT columns under seismic loading.
Spatial mapping relationship model of subgrade disease and track geometry for high-Speed railway
Authors: Zhong Yichen , Li Yan , Zhang Zhenhao
Published: December 2022

A highly efficient and accurate mapping relationship model of subgrade disease and track geometry is significant for determining criterion of subgrade deformation and evaluating operation safety of High-speed Railway. In this paper, an innovative spatial mapping relationship model (SMRM) is proposed for describing track spatial geometry under subgrade disease of differential settlement and frost heave. Starting from analysing the theoretical interaction mechanism between subgrade and ballastless track, and presenting the flowchart of SMRM and its implementation process are described in detail. The good accuracy and applicability of SMRM method is verified based on the finite element model (FEM) and scale model experiment. The results indicate that it can better simulate the spatial characteristic of above mapping relationship than traditional theoretical model and avoid complicated and time-consuming FEM analysis process. It has high accuracy and reliability for the most application scenarios. The proposed method also can analyse the influences of others’ diseases on track geometry as long as the disease description function is available.