bluuebunny/crossref_metadata_2025_split huggingface dataset:
Speak with One Voice? Examining Content Coordination and Social Media Engagement During Disasters
Authors: Yoo Changseung , Yoo Eunae , Yan Lu (Lucy) , Pedraza-Martinez Alfonso 
Published: August 2023

Speak with One Voice? Examining Content Coordination and Social Media Engagement During Disasters Practice- and policy-oriented abstract: Disaster relief organizations (DROs) use social media to share information rapidly and broadly. Many DROs maintain multiple accounts on the same social media platform. Each account represents a different operational entity of a DRO, such as its national headquarters or a local branch. An important problem that DROs with multiple accounts face is how to coordinate the production of social media content across these accounts. One strategy is to have all accounts within the same DRO match their decisions about how content is created and designed (e.g., audience, topic). An alternate strategy is to mismatch these decisions. Using Twitter data collected in partnership with the Canadian Red Cross, we analyze which coordination strategy is best for social media engagement. Our results suggest that, during the immediate aftermath of a disaster, accounts within the same DRO should produce content with similar characteristics by matching their content creation decisions. This leads to a 4.3% lift in engagement. However, when DROs start working on helping impacted communities recover from disasters, engagement is 29.6% higher when their accounts mismatch their content creation decisions and post distinctive content.
Optimal Policies for Dynamic Pricing and Inventory Control with Nonparametric Censored Demands
Authors: Chen Boxiao , Wang Yining , Zhou Yuan 
Published: August 2023

We study the classic model of joint pricing and inventory control with lost sales over T consecutive review periods. The firm does not know the demand distribution a priori and needs to learn it from historical censored demand data. We develop nonparametric online learning algorithms that converge to the clairvoyant optimal policy at the fastest possible speed. The fundamental challenges rely on that neither zeroth-order nor first-order feedbacks are accessible to the firm and reward at any single price is not observable due to demand censoring. We propose a novel inversion method based on empirical measures to consistently estimate the difference of the instantaneous reward functions at two prices, directly tackling the fundamental challenge brought by censored demands. Based on this technical innovation, we design bisection and trisection search methods that attain an [Formula: see text] regret for the case with concave reward functions, and we design an active tournament elimination method that attains [Formula: see text] regret when the reward functions are nonconcave. We complement the [Formula: see text] regret upper bound with a matching [Formula: see text] regret lower bound. The lower bound is established by a novel information-theoretical argument based on generalized squared Hellinger distance, which is significantly different from conventional arguments that are based on Kullback-Leibler divergence. Both the upper bound technique based on the “difference estimator” and the lower bound technique based on generalized Hellinger distance are new in the literature, and can be potentially applied to solve other inventory or censored demand type problems that involve learning. This paper was accepted by Jeannette Song, operations management. Supplemental Material: The data files and online appendix are available at https://doi.org/10.1287/mnsc.2023.4859 .
High-coherence hybrid-integrated 780  nm source by self-injection-locked second-harmonic generation in a high-Q silicon-nitride resonator
Authors: Li Bohan , Yuan Zhiquan , Jin Warren , Wu Lue , Guo Joel , Ji Qing-Xin , Feshali Avi , Paniccia Mario , Bowers John E. , Vahala Kerry J. 
Published: August 2023

Visible, high-coherence optical sources are important to a wide range of applications spanning spectroscopy to precision timing. Integration of these sources on a semiconductor chip is a necessary step if the systems that use these devices are to be made compact, portable, and low power. Here, by self-injection-locking a 1560 nm distributed feedback semiconductor laser to a high-Q silicon-nitride resonator, a high-coherence 780 nm second-harmonic signal is generated via the photogalvanic-induced second-order nonlinearity. A record-low frequency noise floor of 4Hz2/Hz is achieved for the 780 nm emission. The approach can potentially generate signals over a wide range of visible and near-visible bands, and thereby help transition many table-top systems into a fieldable form.
Reversions of QuantiFERON-TB Gold Plus in tuberculosis contact investigation: A prospective multicentre cohort study
Authors: Pérez-Recio Sandra , Grijota-Camino Maria D. , Anibarro Luis , Rabuñal-Rey Ramón , Sabria Josefina , Gijón-Vidaurreta Paloma , Pomar Virginia , García-Gasalla Mercedes , Domínguez-Castellano Ángel , Trigo Matilde , Santos María Jesús , Cebollero Alba , Rodríguez Sara , Moga Esther , Penas-Truque Anton , Martos Carmen , Ruiz-Serrano M. Jesús , Garcia-de-Cara Erika I. , Alcaide Fernando , Santin Miguel 
Published: August 2023

Background
Interferon-y Release Assays (IGRA) reversions have been reported in different clinical scenarios for the diagnosis of tuberculosis (TB) infection. This study aimed to determine the rate of QuantiFERON-TB Gold Plus (QFT-Plus) reversions during contact investigation as a potential strategy to reduce the number of preventive treatments.

Methods
Prospective, multicentre cohort study of immunocompetent adult contacts of patients with pulmonary TB tested with QFT-Plus. Contacts with an initial positive QFT-Plus (QFT-i) underwent a second test within 4 weeks (QFT-1), and if negative, underwent a repeat test 4 weeks later (QFT-2). Based on the QFT-2 result, we classified cases as sustained reversion if they remained negative and as temporary reversion if they turned positive.

Results
We included 415 contacts, of whom 96 (23.1%) had an initial positive test (QFT-i). Following this, 10 had negative QFT-1 results and 4 (4.2%) of these persisted with a negative result in the QFT-2 (sustained reversions). All four sustained reversions occurred in contacts with IFN-γ concentrations between ≥0.35 and ≤0.99 IU•mL-1 in one or both QFT-i tubes.

Conclusion
In this study, TB contact investigations rarely reveal QFT-Plus reversion. These results do not support retesting cases with an initial positive result to reduce the number of preventive treatments.
Establishment of an endoplasmic reticulum stress-associated lncRNAs model to predict prognosis and immunological characteristics in hepatocellular carcinoma
Authors: Shen Xingyuan , Wu Siyuan , Yang Zhen , Zhu Chunfu 
Published: August 2023

Background
The endoplasmic reticulum stress (ERS) and unfolded protein response (UPR) pathways play an essential role in the pathophysiology of hepatocellular carcinoma (HCC), and activation of the UPR pathway is strongly associated with tumor growth. However, the function of ERS-associated long non-coding RNAs (lncRNAs) in HCC is less recognized.

Methods
We have used TCGA (The Cancer Genome Atlas) to obtain clinical and transcriptome data for HCC patients and the GSEA (Gene Set Enrichment Analysis) molecular signature database to get the ERS gene. ERS-associated prognostic lncRNA was determined using univariate Cox regression study. Then, least absolute shrinkage and selection operator and multivariate Cox regression study were used to construct ERS-associated lncRNAs risk model. Next, we use Kaplan-Meier (KM) survival study, time-dependent receiver operating characteristic (ROC) curve, univariate and multivariate Cox regression study to validate and evaluate the risk model. GSEA reveals the underlying molecular mechanism of the risk model. In addition, differences in Immune cell Infiltration Study, half-maximal inhibitory concentration (IC50) and immune checkpoints blockade (ICB) treatment between high and low risk groups were analyzed.

Results
We constructed a risk model consisting of 6 ERS-associated lncRNAS (containingMKLN1-AS, LINC01224, AL590705.3, AC008622.2, AC145207.5, and AC026412.3). The KM survival study showed that the prognosis of HCC patients in low-risk group was better than that in high-risk group. ROC study, univariate and multivariate Cox regression study showed that the risk model had good predictive power for HCC patients. Our verification sample verified the aforesaid findings. GSEA suggests that several tumor- and metabolism-related signaling pathways are associated with risk groups. Simultaneously, we discovered that the risk models may help in the treatment of ICB and the selection of chemotherapeutic drugs.

Conclusions
In this article, we created an ERS-associated lncRNAs risk model to help prognostic diagnosis and personalized therapy in HCC.
Risk factors for late (28+ weeks’ gestation) stillbirth in the United States, 2014–2015
Authors: Tanner Darren , Murthy Sushama , Lavista Ferres Juan M. , Ramirez Jan-Marino , Mitchell Edwin A. 
Published: August 2023

BackgroundIn the United States (US) late stillbirth (at 28 weeks or more of gestation) occurs in 3/1000 births.AimWe examined risk factors for late stillbirth with the specific goal of identifying modifiable factors that contribute substantially to stillbirth burden.SettingAll singleton births in the US for 2014–2015.MethodsWe used a retrospective population-based design to assess the effects of multiple factors on the risk of late stillbirth in the US. Data were drawn from the US Centers for Disease Control and Prevention live birth and fetal death data files.ResultsThere were 6,732,157 live and 18,334 stillbirths available for analysis (late stillbirth rate = 2.72/1000 births). The importance of sociodemographic determinants was shown by higher risks for Black and Native Hawaiian and Other Pacific Islander mothers compared with White mothers, mothers with low educational attainment, and older mothers. Among modifiable risk factors, delayed/absent prenatal care, diabetes, hypertension, and maternal smoking were associated with increased risk, though they accounted for only 3–6% of stillbirths each. Two factors accounted for the largest proportion of late stillbirths: high maternal body mass index (BMI; 15%) and infants who were small for gestational age (38%). Participation in the supplemental nutrition for women, infants and children program was associated with a 28% reduction in overall stillbirth burden.ConclusionsThis study provides population-based evidence for stillbirth risk in the US. A high proportion of late stillbirths was associated with high maternal BMI and small for gestational age, whereas participation in supplemental nutrition programs was associated with a large reduction in stillbirth burden. Addressing obesity and fetal growth restriction, as well as broadening participation in nutritional supplementation programs could reduce late stillbirths.
Higher Mixed lineage Kinase Domain-like protein (MLKL) is associated with worst overall survival in adult-type diffuse glioma patients
Authors: Vergara Guilherme Afonso , Eugenio Gisele Cristine , Fleury Malheiros Suzana Maria , Victor Elivane da Silva , Weinlich Ricardo 
Published: August 2023

Introduction
Recently, the search for novel molecular markers in adult-type diffuse gliomas has grown substantially, yet with few novel breakthroughs. As the presence of a necrotic center is a differential diagnosis for more aggressive entities, we hypothesized that genes involved in necroptosis may play a role in tumor progression.

Aim
Given that MLKL is the executioner of the necroptotic pathway, we evaluated whether this gene would help to predict prognosis of adult gliomas patients.

Methods
We analyzed a publicly available retrospective cohort (n = 530) with Kaplan Meier survival analysis (p<0.0001) and both uni- and multivariate Cox regression models.

Results
We determined that MLKL is an independent predictive prognostic marker for overall survival in these patients (HR: 2.56, p<0.001), even when controlled by the CNS5 gold-standard markers, namely IDH mutation and 1p/19q Codeletion (HR: 1.68, p = 0.013). These findings were confirmed in a validation cohort (n = 325), using the same cutoff value. Interestingly, higher expression of MLKL is associated with worse clinical outcome for adult-type diffuse glioma patients, which is opposite to what was found in other cell cancer types, suggesting that necroptosis undertakes an atypical detrimental role in glioma progression.
Downstream Profit Effects of Horizontal Mergers: Horn & Wolinsky and von Ungern-Sternberg Revisited
Authors: Schmal W. Benedikt 
Published: August 2023

Abstract
Mergers between previously contending firms are a permanent challenge for policymaking as they potentially harm competition. The core incentive to merge is the prospect of higher joint profits of the previously independent firms after the merger. We discuss and compare the core assumptions of Horn and Wolinsky (1988) and von Ungern-Sternberg (1996) that lead to contrary results regarding the attractiveness of horizontal mergers of downstream firms in a 1:2 setting leading to a monopolized 1:1 setting. While the latter finds a merger beneficial for the downstream firms, it harms their joint profit, according to Horn & Wolinsky. We theoretically apply both models to the two settings. We also present extensive sample calculations that quantitatively confirm the two papers’ core insights. Discussing and contextualizing the results, we provide a comprehensive overview of horizontal mergers in the downstream part of vertical structures with bargaining over linear input prices. Due to continuing relevance of horizontal mergers for competition policy and, in particular, in light of the consolidation phase in tech start-ups, the topic is of enduring relevance in policymaking.
Analysis of artificial intelligence approaches to predict the wall deflection induced by deep excavation
Authors: Tran DinhHieu , Nguyen HongGiang , Wang YuRen , Phan KhacHai , Phu ThiTuyetNga , Le DuyPhuong , Nguyen TienThinh 
Published: August 2023

Abstract
The geological condition of Ho Chi Minh (HCM) City is soft soil and high groundwater and includes two main structural layers such as Pleistocene and Holocene sediments. Therefore, deep excavation of all the high-rise buildings in the city is usually supported by concrete retaining walls such as the diaphragm or bored pile retaining walls. The system limits the excavation wall deflection during the construction process which could pose a potential risk to the construction and neighborhood areas. To estimate wall deformation at a highly accurate and efficient level, this study presents several machine learning models including feed-forward neural network back-propagation (FFNN-BP), long short-term memory (LSTM), bidirectional long short-term memory (Bi-LSTM), and support vector regression (SVR). The database for the experiment was obtained from a high building in HCM City, Vietnam. The database is deployed to implement the proposed algorithms in walk-forward validation technique. As a result, the Bi-LSTM model reduced prediction errors and improved robustness than the LSTM, FFNN-BP, and SVR models. Bi-LSTM, LSTM, and FFNN-PB could be used for predicting deep excavation wall deflection. In the meantime, not only could the estimated results support safety monitoring and early warning during the construction stages but also could contribute to legal guidelines for the architecture of deep excavations in the city’s soft ground.
Performance of PMU in an electric distribution grid during transients
Authors: Ciancetta Fabrizio , Fioravanti Andrea , Luiso Mario , Mari Simone , Perfetti Andrea , Silvestri Andrea 
Published: August 2023

Abstract
PMUs and micro PMUs are an emerging technology that is gaining increasing importance in the monitoring and control of electric distribution grids. Their ability to provide accurate, real-time information on power quality, along with their ability to quickly detect and isolate any problems on the grid, make them a key tool for increasing grid safety and reliability. In terms of research and development, there is a growing interest in developing more advanced and reliable Micro PMUs that can provide more detailed and accurate information about the grid. In addition, there is a growing focus on integrating Micro PMUs with other grid control and monitoring systems, such as frequency and voltage control systems, to achieve greater efficiency in grid management. In this research, a commercial PMU is tested during transient conditions typical of distribution grids such as load insertion and de-insertion and distributed generation. The system involves simulating a grid in a Simulink environment and transforming digital signals into analog signals to be supplied to the PMU. Some indices such as TVE, ROCOF are then used for performance analysis.
Circ-UBR4 regulates the proliferation, migration, inflammation, and apoptosis in ox-LDL-induced vascular smooth muscle cells via miR-515-5p/IGF2 axis
Authors: Feng Liuliu , Liu Tianhua , Shi Jun , Wang Yu , Yang Yuya , Xiao Wenyin , Bai Yanyan 
Published: August 2023

Abstract
The aim of our study is to disclose the role and underlying molecular mechanisms of circular RNA ubiquitin protein ligase E3 component n-recognin 4 (circ-UBR4) in atherosclerosis (AS). Our data showed that circ-UBR4 expression was upregulated in AS patients and oxidized low-density lipoprotein (ox-LDL)-induced vascular smooth muscle cells (VSMCs) compared with healthy volunteer and untreated VSMCs. In addition, ox-LDL stimulated proliferation, migration, and inflammation but decreased apoptosis in VSMCs, which were overturned by the inhibition of circ-UBR4. miR-515-5p was sponged by circ-UBR4, and its inhibitor reversed the inhibitory effect of circ-UBR4 knockdown on proliferation, migration, and inflammation in ox-LDL-induced VSMCs. Insulin-like growth factor2 (IGF2) was a functional target of miR-515-5p, and overexpression of IGF2 reversed the suppressive effect of miR-515-5p on ox-LDL-stimulated VSMCs proliferation, migration, and inflammation. Collectively, circ-UBR4 knockdown decreased proliferation, migration, and inflammation but stimulated apoptosis in ox-LDL-induced VSMCs by targeting the miR-515-5p/IGF2 axis.
On-chip wavefront shaping in spacing-varied waveguide arrays
Authors: Niu Yunfei , Niu Yunlong , Hu Xiaopeng , Hu Yong , Du Qingyang , Yu Shaoliang , Chu Tao 
Published: August 2023

Abstract
The ability to manipulate light propagation sets the foundations for optical communication and information processing systems. With the ever-growing data capacity and data rate, photonic integrated circuits have attracted increasing attentions of researchers owing to their large-volume integration capacity and fast operation speed. In this work, we proposed and experimentally demonstrated a new wavefront shaping method using waveguide arrays with hyperbolic secant refractive index profiles. Through theoretically analyzing the diffraction and coherence properties, we found that a single waveguide array can perform both imaging and phase transformation, which are the two primary functions of optical lenses. We further expanded this function and fabricated the corresponding devices on a silicon nitride waveguide platform. Deterministic beam shaping, such as focusing, expansion, collimation, and steering, is successfully realized. This wavefront control method exhibits the potential for on-chip optical routing, ranging, sensing, etc., with high integration density and scalability.
PVA-assisted metal transfer for vertical WSe2 photodiode with asymmetric van der Waals contacts
Authors: Song Xiaohui , Liu Zhen , Ma Zinan , Hu Yanjie , Lv Xiaojing , Li Xueping , Yan Yong , Jiang Yurong , Xia Congxin 
Published: August 2023

Abstract
The vertical electronic and optoelectronic devices based on 2D materials have shown great advantages over lateral devices, such as higher current density, faster switch speed, and superior short-channel control. However, it is difficult to fabricate vertical device with conventional metal deposition methods due to the aggressive process usually results in damage to the contact region. Here, we develop a simple and effective metal transfer technique and fabricate p-type and n-type WSe2 transistors by using metals with different work functions and subsequently create a vertical WSe2 transistors with a 18-nm-thick channel, which retain good gate coupling effect. Furthermore, a vertical WSe2 photodiode is constructed with graphene and Pt as asymmetric van der Waals (vdW) contacts. The work-function difference between graphene and Pt generates a built-in electric filed, leading to a high current rectification over 105. Under 405 nm laser illumination, the device exhibits excellent self-powered photodetection properties, including a high responsivity of 0.28 A W−1, fast response speed of 24 μs, and large light on/off ratio exceeding 105 at zero bias, which surpass most of the vdW photodiodes. This work demonstrates that the metal transfer technique is a promising strategy for the construction of high-performance vertical optoelectronic devices.
Study on one-dimensional performance prediction of multi-stage axial turbine based on the blade height
Authors: Xu Ke-wen , Yuan Ze , Li Zhao-lin , Yue Guo-qiang 
Published: August 2023

Abstract
As turbine operating conditions change, the blade height and tip clearance undergo continuous alterations due to the combined effects of thermal stress, aerodynamic forces and centrifugal forces, subsequently influencing the turbine performance. To take this effect into account in turbine performance prediction, this study considers the influence of fluid-heat-structure coupling on blade height and tip clearance and establishes a one-dimensional comprehensive prediction method for multi-stage axial turbine performance considering blade height. When compared with experimental results from a four-stage axial turbine, by considering the fluid-thermal-solid coupling effects, the average relative error in total pressure ratio prediction is reduced from 3.76 % to 1.99 % and the average relative error in total temperature ratio prediction is reduced from 2.03 % to 1.26 %. Compared with the traditional flow prediction method, the prediction results of turbine characteristics considering blade height and tip clearance changes in this paper are closer to the experimental results.