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Zeitschriftenartikel zum Thema „Liu index“

Autor: Grafiati

Veröffentlicht am 25. Juni 2021

Zuletzt aktualisiert am 29. Juli 2025

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1

Dehgardi, Nasrin, Zhibin Du, and Yilun Shang. "Multiplicative Sombor index of trees." Notes on Number Theory and Discrete Mathematics 30, no. 2 (2024): 453–60. http://dx.doi.org/10.7546/nntdm.2024.30.2.453-460.

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For a graph $\Omega$, the multiplicative Sombor index is defined as $$\prod_{SO}(\Omega)=\prod_{ab\in \mathcal{E}(\Omega)}\sqrt{d^2_\Omega(a)+d^2_\Omega(b)},$$ where $d_\Omega(a)$ is the degree of vertex $a$. Liu [Liu, H. (2022). <em>Discrete Mathematics Letters</em>, 9, 80–85] showed that, when $\mathcal{T}$ is a tree of order $n$, $\prod_{SO}(\mathcal{T})\geqslant \prod_{SO}(P_n)=5(\sqrt{8})^{n-3}$. We improved this result and show that, if $\mathcal{T}$ is a tree of order $n$ with maximum degree $\cal{D}$, then $$\prod_{SO}(\mathcal{T})\geqslant \left\{\begin{array}{ll} (5({\cal

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Kumar, Deepak, Janak Raj Sharma, and Lorentz Jăntschi. "A Novel Family of Efficient Weighted-Newton Multiple Root Iterations." Symmetry 12, no. 9 (2020): 1494. http://dx.doi.org/10.3390/sym12091494.

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We propose a novel family of seventh-order iterative methods for computing multiple zeros of a nonlinear function. The algorithm consists of three steps, of which the first two are the steps of recently developed Liu–Zhou fourth-order method, whereas the third step is based on a Newton-like step. The efficiency index of the proposed scheme is 1.627, which is better than the efficiency index 1.587 of the basic Liu–Zhou fourth-order method. In this sense, the proposed iteration is the modification over the Liu–Zhou iteration. Theoretical results are fully studied including the main theorem of lo

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Mu, Yi, Andrew I. Chin, Abhijit V. Kshirsagar, Yi Zhang, and Heejung Bang. "Regional and Temporal Variations in Comorbidity Among US Dialysis Patients: A Longitudinal Study of Medicare Claims Data." INQUIRY: The Journal of Health Care Organization, Provision, and Financing 55 (January 1, 2018): 004695801877116. http://dx.doi.org/10.1177/0046958018771163.

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Medicare claims data are commonly used to query comorbidities for case-mix adjustment in research of patients with end-stage renal disease (ESRD) in the United States. These adjustments may affect reimbursement and quality rating through comparative profiling and ranking of dialysis facilities. We studied regional and temporal variations in comorbidity from claims data in the United States Renal Data System. Patients with a previous 1-year Medicare history who initiated dialysis therapy between 2006 and 2009 were examined with a follow-up period until 2012. By linking pre- and post-ESRD Medica

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Chen, Yin, Baoyindureng Wu, and Xinhui An. "Wiener Index of Graphs with Radius Two." ISRN Combinatorics 2013 (March 3, 2013): 1–5. http://dx.doi.org/10.1155/2013/906756.

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The Wiener index of a graph is the sum of the distances between all pairs of vertices. It has been one of main descriptors that correlate a chemical compound's molecular graph with experimentally gathered data regarding the compound's characteristics. We characterize graphs with the maximum Wiener index among all graphs of order . with radius two. In addition, we pose a conjecture concerning the minimum Wiener index of graphs with given radius. If this conjecture is true, it will be able to answer an open question by You and Liu (2011).

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Hausken, John, Kjersti Lønning, Linda Johnsen, Pål-Dag Line, Kristian Heldal, and Karsten Midtvedt. "FP745 LIU COMORBIDITY INDEX PREDICTS ICU ADMISSION AND SURVIVAL POST KIDNEY TRANSPLANTATION." Nephrology Dialysis Transplantation 33, suppl_1 (2018): i297. http://dx.doi.org/10.1093/ndt/gfy104.fp745.

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Herawati, Netti, Eva Silviana, Khoirin Nisa, and Subian Saidi. "The effectiveness of Liu-Estimator in predicting poverty levels in Indonesia: Comparative study and application of simulation." Multidisciplinary Science Journal 7, no. 4 (2024): 2025187. http://dx.doi.org/10.31893/multiscience.2025187.

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Several logistic regression studies have frequently encountered problems where the data contains multicollinearity. This condition negatively impacts parameter estimation. The Least Absolute Shrinkage and Selection Operator (LASSO) and the Liu Estimator are methods that can be employed to eliminate multicollinearity among independent variables. The objective of this research is to evaluate the effectiveness of the Liu Estimator in removing multicollinearity compared to the Maximum Likelihood Estimator (MLE) and LASSO, using simulation data for sample sizes of n = 25, 50, and 75 in a binary log

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Akpootu, D. O., and S. I. Salifu. "New Models for Estimation of Diffuse Solar Radiation for Warri, Nigeria." Dutse Journal of Pure and Applied Sciences 10, no. 1c (2024): 67–82. http://dx.doi.org/10.4314/dujopas.v10i1c.7.

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This study utilized a 22-year dataset (2001-2022) comprising monthly average daily global solar radiation, diffuse solar radiation, relative humidity, atmospheric pressure, wind speed, and mean temperature for Warri (Latitude 5.52 oN, Longitude 5.73 oE and 6.10 m above sea level). Nineteen models, categorized into modified Page, Liu, and Jordan models; clearness index and one variable models; two variable models; three variable models; and four variable models, were developed and statistically tested using the following validation indices of Mean Bias Error (MBE), Root Mean Square Error (RMSE)

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Yu, Guihai, Lihua Feng, and Aleksandar Ilic. "The largest n - 1 Hosoya indices of unicyclic graphs." Filomat 30, no. 9 (2016): 2573–81. http://dx.doi.org/10.2298/fil1609573y.

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The Hosoya index Z(G) of a graph G is defined as the total number of edge independent sets of G. In this paper, we extend the research of [J. Ou, On extremal unicyclic molecular graphs with maximal Hosoya index, Discrete Appl. Math. 157 (2009) 391-397.] and [Y. Ye, X. Pan, H. Liu, Ordering unicyclic graphs with respect to Hosoya indices and Merrifield-Simmons indices, MATCH Commun. Math. Comput. Chem. 59 (2008) 191-202.] and order the largest n - 1 unicyclic graphs with respect to the Hosoya index.

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Maitreyi, Venkatesan, Suresh Elumalai, Akbar Ali, Selvaraj Balachandran, Hicham Saber, and Adel A. Attiya. "On the Maximum ABS Index of Fixed-Order Trees with a Given Maximum Degree." Mathematics 12, no. 17 (2024): 2704. http://dx.doi.org/10.3390/math12172704.

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The ABS (atom-bond sum-connectivity) index of a graph G is denoted by ABS(G) and is defined as ∑xy∈E(G)(dx+dy)−1(dx+dy−2), where dx represents the degree of the vertex x in G. In this paper, we derive the best possible upper bounds on the ABS index for fixed-order trees possessing a given maximum degree, which provides a solution to the open problem proposed quite recently by Hussain, Liu and Hua.

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Hayat, Fazal, Shou-Jun Xu, and Bo Zhou. "Disproof of a Conjecture on the Edge Mostar Index." Utilitas Mathematica 121, no. 1 (2024): 25–35. https://doi.org/10.61091/um121-03.

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For a connected graph \(G\), the edge Mostar index \(Mo_e(G)\) is defined as \(Mo_e(G)=\sum\limits_{e=uv \in E(G)}|m_u(e|G) - m_v(e|G)|\), where \(m_u(e|G)\) and \(m_v(e|G)\) are respectively, the number of edges of \(G\) lying closer to vertex \(u\) than to vertex \(v\) and the number of edges of \(G\) lying closer to vertex \(v\) than to vertex \(u\). We determine a sharp upper bound for the edge Mostar index on bicyclic graphs and identify the graphs that achieve the bound, which disproves a conjecture proposed by Liu et al. [Iranian J. Math. Chem. 11(2) (2020) 95--106].

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Brown, I. David. "A redetermination of the structure of poly[[μ4-(R)-2-ammonio-3-sulfonatopropanoato]aquasodium], originally reported as poly[[μ7-L-cysteato(2−)]disodium]". Acta Crystallographica Section E Structure Reports Online 68, № 4 (2012): m393. http://dx.doi.org/10.1107/s1600536812009683.

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The structure originally reported as poly[[μ7-L-cysteato(2−)]disodium], [Na2(C3H5NO5S)]n[Liu (2002).Acta Cryst. E67, m1346–m1347], has been redetermined with one of the sodium atoms replaced with a water molecule and an additional proton attached to the amine group, resulting in the revised formula [Na{CO2CH(CH2SO3)NH3}(H2O)]n. The agreement index,wR, has been reduced from 0.159 to 0.087 and the global instability index from 0.56 vu (valence units) to the acceptable value of 0.11 vu.

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Tuğcu, Murat, Umut Kasapoğlu, Gülizar Şahin, and Süheyla Apaydın. "The Factors Affecting Survival in Geriatric Hemodialysis Patients." International Journal of Nephrology 2018 (July 10, 2018): 1–4. http://dx.doi.org/10.1155/2018/5769762.

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Introduction. The number of geriatric patients is increasing in hemodialysis population over the years and mortality is higher in this group of patients. This study evaluated the factors affecting geriatric hemodialysis patient survival. Materials and Methods. This retrospective cohort study enrolled patients discharged from our nephrology clinic from 2009 to 2014. Data collected included demographics, Eastern Cooperative Oncology Group-Performance Status, vascular access type, and metabolic parameters. Comorbidity was quantified using the modified Liu comorbidity index. The outcome measure wa

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Ningsih, Wiwik Andriyani Lestari, I. Made Sumertajaya, and Asep Saefuddin. "Pattern Detection of Economic and Pandemic Vulnerability Index in Indonesia Using Bi-Cluster Analysis." JUITA : Jurnal Informatika 10, no. 2 (2022): 273. http://dx.doi.org/10.30595/juita.v10i2.14940.

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Bi-clustering is a clustering development that aims to group data simultaneously from two directions. The Iterative Signature Algorithm (ISA) is one of the bi-clustering algorithms that work iteratively to find the most correlated bi-cluster. Detecting economic and pandemic vulnerability using bi-cluster analysis is essential to get spatial patterns and an overview of Indonesia's economic and pandemic vulnerability characteristics. Bi-clustering using ISA requires setting the row and column threshold to form seventy combinations of thresholds. The best is chosen based on the average value of m

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Aznar-Gimeno, Rocío, Luis M. Esteban, Gerardo Sanz, Rafael del-Hoyo-Alonso, and Ricardo Savirón-Cornudella. "Incorporating a New Summary Statistic into the Min–Max Approach: A Min–Max–Median, Min–Max–IQR Combination of Biomarkers for Maximising the Youden Index." Mathematics 9, no. 19 (2021): 2497. http://dx.doi.org/10.3390/math9192497.

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Linearly combining multiple biomarkers is a common practice that can provide a better diagnostic performance. When the number of biomarkers is sufficiently high, a computational burden problem arises. Liu et al. proposed a distribution-free approach (min–max approach) that linearly combines the minimum and maximum values of the biomarkers, involving only a single coefficient search. However, the combination of minimum and maximum biomarkers alone may not be sufficient in terms of discrimination. In this paper, we propose a new approach that extends that of Liu et al. by incorporating a new sum

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Qu, Huimin, and Jie Han. "Driving Factors for the Change of Fertilizer Use Intensity in China and Its Six Major Regions." International Business Research 14, no. 10 (2021): 71. http://dx.doi.org/10.5539/ibr.v14n10p71.

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China has invested excessive amounts of fertilizer on limited farmland, which poses a threat to human health and agro-ecological environment. While a plethora of studies have explored how to reduce the total amount of chemical fertilizer, and scant attention has been paid to how to reduce the chemical fertilizer use intensity (FUI). This paper aims to explore the driving factors for the change of FUI to answer this question. It uses the official statistics of China from 1997 to 2017, as well as index decomposition analysis (IDA) and Laspeyres index decomposition method to obtain the following

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Rodrigues, Natacha, Mariana Fragão-Marques, Cláudia Costa, et al. "Predictive Risk Score for Acute Kidney Injury in Hematopoietic Stem Cell Transplant." Cancers 15, no. 14 (2023): 3720. http://dx.doi.org/10.3390/cancers15143720.

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Hematopoietic stem cell transplant (HSCT) is an important treatment option for hematologic malignancies. Acute kidney injury (AKI) is a common complication in HSCTs and is related to worse outcomes. We aimed to create a predictive risk score for AKI in HSCT considering variables available at the time of the transplant. We performed a retrospective cohort study. AKI was defined by the KDIGO classification using creatinine and urinary output criteria. We used survival analysis with competing events. Continuous variables were dichotomized according to the Liu index. A multivariable analysis was p

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Liu, Chin, and Yi Shi-Gong. "Chin Liu strain rate sensitivity index–strain equation of superplasticity and influence of specimen geometry." Materials Science and Technology 6, no. 2 (1990): 141–45. http://dx.doi.org/10.1179/mst.1990.6.2.141.

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Hodoshima, Jiro, and Toshiyuki Yamawake. "Sensitivity of Performance Indexes to Disaster Risk." Risks 9, no. 2 (2021): 40. http://dx.doi.org/10.3390/risks9020040.

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We examine how sensitive the new performance indexes incorporating high moments and disaster risk are to disaster risk. The new performance indexes incorporating high moments and disaster risk are the Aumann-Serrano performance index and Foster-Hart performance index proposed by Kadan and Liu. These performance indexes provide evaluations sensitive to the underlying risk. We show, by numerical examples and empirical examples, how sensitive these indexes are to disaster risk. Although these indexes are known to be either quite sensitive or excessively sensitive to disaster risk or maximum loss

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Salifu, S. I., D. O. D. O., A. T. Ibilola, et al. "Modified And Multivariate Models for Estimation of Diffuse Solar Radiation in Ogoja, Cross River State, Nigeria." International Journal of Science for Global Sustainability 10, no. 2 (2024): 115–27. http://dx.doi.org/10.57233/ijsgs.v10i2.654.

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This research utilized a 22-year dataset (2001-2022) of monthly average climatic data for Ogoja, Nigeria. The dataset includes global solar radiation, all-sky surface shortwave diffuse irradiance, mean temperatures, wind speed, relative humidity, and surface pressure, obtained from NASA. The data were analyzed using multiple linear regression, with atmospheric pressure, relative humidity, mean temperature, and wind speed as independent variables. Nineteen models were developed and categorized into modified Page, Liu and Jordan models, clearness index and single variable models, two-variable mo

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Li, Xu, Maqsood Ahmad, Muhammad Javaid, Muhammad Saeed, and Jia-Bao Liu. "Bounds on General Randić Index for F-Sum Graphs." Journal of Mathematics 2020 (August 30, 2020): 1–17. http://dx.doi.org/10.1155/2020/9129365.

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A topological invariant is a numerical parameter associated with molecular graph and plays an imperative role in the study and analysis of quantitative structure activity/property relationships (QSAR/QSPR). The correlation between the entire π-electron energy and the structure of a molecular graph was explored and understood by the first Zagreb index. Recently, Liu et al. (2019) calculated the first general Zagreb index of the F-sum graphs. In the same paper, they also proposed the open problem to compute the general Randić index RαΓ=∑uv∈EΓdΓu×dΓvα of the F-sum graphs, where α∈R and dΓu denote

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Fithri Amalia Rahma and Suliadi. "Pengujian Hipotesis untuk Dua Sampel Saling Bebas dengan Menggunakan Pendekatan Bayesian." Bandung Conference Series: Statistics 1, no. 1 (2021): 1–6. http://dx.doi.org/10.29313/bcss.v1i1.35.

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Abstract. In this thesis, we will discuss hypothesis testing for two independent samples using the Bayesian approach. One of the alternative bayesian methods for classical hypothesis testing is the Bayesian factor. Wang & Liu (2015) proposed a two-sample testing method with a bayesian approach. Where the Bayes factor used is simple, and free from the Bartlett paradox and the information paradox. The data used for the application of this method is the Human Development Index (IPM) data based on the province of West Java and Central Java in 2020. The results of the two independent sample tes

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Wang, Yuxing, and Chunyu Wei. "A Four-Zone Model and Nonlinear Dynamic Analysis of Solution Multiplicity of Buoyancy Ventilation in Underground Building." Complexity 2020 (August 31, 2020): 1–24. http://dx.doi.org/10.1155/2020/8658797.

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The solution multiplicity of natural ventilation in buildings is very important to personnel safety and ventilation design. In this paper, a four-zone model of buoyancy ventilation in typical underground building is proposed. The underground structure is divided to four zones, a differential equation is established in each zone, and therefore, there are four differential equations in the underground structure. By solving and analyzing the equilibrium points and characteristic roots of the differential equations, we analyze the stability of three scenarios and obtain the criterions to determine

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Salifu, Simeon I., B. S. Hamza, D. O. Akpootu, T. A. Kola, and A. Yusuf. "NEW MODELS FOR ESTIMATION OF DIFFUSE SOLAR RADIATION USING METEOROLOGICAL PARAMETERS FOR BENIN, NIGERIA." FUDMA JOURNAL OF SCIENCES 8, no. 1 (2024): 155–66. http://dx.doi.org/10.33003/fjs-2024-0801-2259.

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In this comprehensive study, an extensive 22-year dataset (2001-2022) for Benin (Latitude 6.32 oN, Longitude 5.10 oE and 77.80 m above sea level) were obtained from the National Aeronautic Space Administration (NASA) website. The datasets comprises of the monthly average daily global solar radiation, diffuse solar radiation, relative humidity, atmospheric pressure, wind speed, and mean temperature, was utilized to develop 19 new models for estimating diffuse solar radiation. These models were categorized into five distinct groups: modified Page, Liu and Jordan models; clearness index and one-v

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Al-Hassany, Gheidaa Sabeeh. "Calculated the diffuse and direct parts of global solar radiation in Baghdad city for the period (1983-2005) depending on clearness index by applying the two world models of Liu -Jordan." Iraqi Journal of Physics (IJP) 12, no. 25 (2019): 94–104. http://dx.doi.org/10.30723/ijp.v12i25.309.

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In this paper solar radiation was studied over a region of Baghdad (Latitude 33.3o and longitude 44.4o). The two parts of global solar radiation: diffuse and direct solar radiation were estimated depending on the clearance index of measured data (Average Monthly mean global solar radiation). Metrological data of measured (average monthly mean diffuse and direct solar radiation) were used to comparison the results and show the agreement between them. Results are determined by applying Liu and Jordan two models (1960). Excel 2007program is used in calculation, graphics and comparison the results

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Hu, Qing Guo, Shu Yuan Xu, Xin Zhi Song, and Zhong Ming He. "Research on Speed Limit of Highway Expansion Project Construction Zone." Applied Mechanics and Materials 641-642 (September 2014): 711–14. http://dx.doi.org/10.4028/www.scientific.net/amm.641-642.711.

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The reasonable speed limit would reduce the detrimental impact on the driving safety and traffic jam in Highway expansion project high slope work zone. The study based on the investigation of Liu Nan highway’s traffic capacity, speed, traffic flow and other related index, which researched the vehicles queuing length of the different lane width in expansion project construction zone. The result is that 1/2 lane occupied need limit speed step by step in the warning area, 1/3 lane occupied limit 60km/h and 1/4 lane occupied limit 80km/h.

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Quera, Rodrigo, and Paulina Núñez F. "Are we ready to use new endoscopic scores for ulcerative colitis?" World Journal of Gastroenterology 30, no. 10 (2024): 1466–69. http://dx.doi.org/10.3748/wjg.v30.i10.1466.

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For ulcerative colitis (UC), the variability in inflammatory activity along the colon poses a challenge in management. The focus on achieving endoscopic healing in UC is evident, where the UC Endoscopic Index of Severity and Mayo Endoscopic Subscore are commonly used for evaluation. However, these indices primarily consider the most severely affected region. Liu et al recent study validates the Toronto Inflammatory Bowel Disease Global Endoscopic Reporting (TIGER) score offering a comprehensive assessment of inflammatory activity across diverse segments of the colon and rectum and a reliable i

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Kara, Engin. "SECTORAL DIFFERENCES IN PRICE-ADJUSTMENT FREQUENCIES AND OPTIMAL MONETARY POLICY: A NOTE." Macroeconomic Dynamics 19, no. 3 (2013): 708–22. http://dx.doi.org/10.1017/s1365100513000552.

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This paper reconsiders the monetary policy implications of a model from which a distinction between CPI inflation and PPI inflation arises. More specifically, this paper addresses the policy conclusion by K. Huang and Z. Liu [2005, Inflation targeting: What inflation rate to target, Journal of Monetary Economics 52, 1435–1462], which states that central banks should use an optimal inflation index that gives substantial weight to stabilizing both CPI and PPI. This paper argues that these authors' findings rely on the assumption that producer prices are as sticky as consumer prices and shows tha

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Ningsih, Wiwik Andriyani Lestari, I. Made Sumertajaya, and Asep Saefuddin. "BICLUSTERING APPLICATION IN INDONESIAN ECONOMIC AND PANDEMIC VULNERABILITY." BAREKENG: Jurnal Ilmu Matematika dan Terapan 16, no. 4 (2022): 1453–64. http://dx.doi.org/10.30598/barekengvol16iss4pp1453-1464.

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Biclustering is an analytical tool to group data from two dimensions simultaneously. The analysis was first introduced by Hartigan (1972) and applied by Cheng and Church (2000) to the gene expression matrix. The Cheng and Church (CC) algorithm is a popular biclustering algorithm and has been widely applied outside the field of biological data in recent years. This algorithm application in economic and Covid-19 pandemic vulnerability cases is exciting and essential to do in order to get an overview of the spatial pattern and characteristics of the bicluster of economic and COVID-19 pandemic vul

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Shaaban, Yasmine. "How to adjust therapy for elderly AML patients in developing countries?" Egyptian Journal of Haematology 48, no. 4 (2023): 345–52. http://dx.doi.org/10.4103/ejh.ejh_68_23.

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Abstract Background Acute myeloid leukemia (AML) with advancing age represents a therapeutic challenge. The tools used for comprehensive geriatric assessment (CGA) in elderly AML are not uniform. Methods This is a retrospective study that included 226 elderly AML patients (≥60 years), identified from the electronic database and followed till the end of 2021. Comorbidities were assessed using Charlson Comorbidity Index (CCI), Cumulative Illness Rating Scale-Geriatric (CIRS-G), Hematopoietic cell transplantation-specific comorbidity index (HCT-CI) scores, and Chia-Jen Liu and colleagues simplifi

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Iban˜ez, Manuel, William A. Beckman, and Sanford A. Klein. "Frequency Distributions for Hourly and Daily Clearness Indices." Journal of Solar Energy Engineering 124, no. 1 (2001): 28–33. http://dx.doi.org/10.1115/1.1445443.

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The clearness index for hourly and daily radiation is an important parameter in describing solar radiation. Liu and Jordan demonstrated that the monthly average daily clearness index could be used to predict the long-term distribution of daily solar radiation in a month. This paper reviews recent literature on the prediction of hourly and daily frequency distributions and cumulative frequency distributions of clearness indices. Ten years of measured weather data for six cities in the U.S. are used to investigate the nature of the hourly and daily frequency distributions. A second set of ten ye

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Liu, Qing, Chen Ling, Deyuan Li, and Liang Peng. "BIAS-CORRECTED INFERENCE FOR A MODIFIED LEE–CARTER MORTALITY MODEL." ASTIN Bulletin 49, no. 2 (2019): 433–55. http://dx.doi.org/10.1017/asb.2019.9.

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AbstractAs a benchmark mortality model in forecasting future mortality rates and hedging longevity risk, the widely employed Lee–Carter model (Lee, R.D. and Carter, L.R. (1992) Modeling and forecasting U.S. mortality. Journal of the American Statistical Association, 87, 659–671.) suffers from a restrictive constraint on the unobserved mortality index for ensuring model’s identification and a possible inconsistent inference. Recently, a modified Lee–Carter model (Liu, Q., Ling, C. and Peng, L. (2018) Statistical inference for Lee–Carter mortality model and corresponding forecasts. North America

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Afnan, Irsyifa Mayzela, Hari Wijayanto, and Aji Hamim Wigena. "Identifying Poverty Vulnerability Patterns in Indonesia using Cheng and Chruch’s Algorithm." JTAM (Jurnal Teori dan Aplikasi Matematika) 8, no. 4 (2024): 1262. http://dx.doi.org/10.31764/jtam.v8i4.25790.

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Poverty remains a significant issue in developing countries, including Indonesia, where in 2022, the number of people living in poverty reached 26.36 million, with a poverty rate of 9.57%. The Central Statistics Agency (BPS) measures poverty using a basic needs approach, defined as the inability to meet essential food and non-food needs through expenditure. Individuals are considered poor if their average monthly per capita expenditure is below the poverty line. Research on poverty has evolved into a more multidimensional understanding, The Multidimensional Poverty Index (MPI), which identifie

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Shi, Yarong, Lei Mi, Jie Liu, Xiaoyao Liu, and Yanan Hao. "Therapeutic effect of Micro-Implant Anchorage in orthodontics." Pakistan Journal of Medical Sciences 40, no. 10 (2024): 2293–98. http://dx.doi.org/10.12669/pjms.40.10.10442.

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Objective: Micro implant anchorage (MIA), as a new orthodontic treatment technique, has the characteristics of simple operation, light trauma, and high stability, and has been widely used in clinical practice. This study compared the therapeutic effects of MIA and the traditional straight wire appliance (SWA) in orthodontic practice. Methods: Clinical data of 119 patients who underwent orthodontic treatment in Yulin First Hospital from January 2022 to January 2023 were retrospectively analyzed. According to the treatment records, 61 patients received MIA orthodontic treatment (MIA group), and

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Huang, Kan, Danwen Fu, Yonghua Jiang, et al. "Storability and Linear Regression Models of Pericarp Browning and Decay in Fifty Litchi (Litchi chinensis Sonn.) Cultivars at Room Temperature Storage." Foods 12, no. 8 (2023): 1725. http://dx.doi.org/10.3390/foods12081725.

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The primary cause for the limited shelf life of litchi fruit is rapid pericarp browning and decay. This study aims to evaluate the storability of 50 litchi varieties and establish a linear regression model for pericarp browning and decay based on 11 postharvest physical and chemical indices after 9 days of storage at room temperature. The results indicated that the average value of the browning index and decay rate significantly increased to 3.29% and 63.84% of 50 litchi varieties at day 9, respectively. Different litchi varieties showed different variations in appearance indicators, quality i

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Yu, Hai-Jun, Xiao-Long Lin, Rui-Lei Zhang, Qian Wang, and Xin-Hua Wang. "Species delimitation and life stage association of Propsilocerus Kieffer, 1923 (Diptera, Chironomidae) using DNA barcodes." ZooKeys 975 (October 12, 2020): 79–86. http://dx.doi.org/10.3897/zookeys.957.54668.

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The utility of COI DNA barcodes in species delimitation is explored as well as life stage associations of five closely related Propsilocerus species: Propsilocerus akamusi (Tokunaga, 1938), Propsilocerus paradoxus (Lundström, 1915), Propsilocerus saetheri Wang, Liu et Paasivirta, 2007, Propsilocerus sinicus Sæther et Wang, 1996, and Propsilocerus taihuensis (Wen, Zhou et Rong, 1994). Results revealed distinctly larger interspecific than intraspecific divergences and indicated a clear “barcode gap”. In total, 42 COI barcode sequences including 16 newly generated DNA barcodes were applied to sev

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Yu, Hai-Jun, Xiao-Long Lin, Rui-Lei Zhang, Qian Wang, and Xin-Hua Wang. "Species delimitation and life stage association of Propsilocerus Kieffer, 1923 (Diptera, Chironomidae) using DNA barcodes." ZooKeys 975 (October 12, 2020): 79–86. https://doi.org/10.3897/zookeys.957.54668.

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The utility of COI DNA barcodes in species delimitation is explored as well as life stage associations of five closely related Propsilocerus species: Propsilocerus akamusi (Tokunaga, 1938), Propsilocerus paradoxus (Lundström, 1915), Propsilocerus saetheri Wang, Liu et Paasivirta, 2007, Propsilocerus sinicus Sæther et Wang, 1996, and Propsilocerus taihuensis (Wen, Zhou et Rong, 1994). Results revealed distinctly larger interspecific than intraspecific divergences and indicated a clear "barcode gap". In total, 42 COI barcode sequences including 16 newly generated DNA barcodes were applied to sev

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Velasco Davoise, Lara, Rafael Peña Capilla, and Ana M. Díez-Pascual. "Isotropic and Anisotropic Complex Refractive Index of PEDOT:PSS." Polymers 15, no. 15 (2023): 3298. http://dx.doi.org/10.3390/polym15153298.

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In this work, the complex refractive indexes of seven PEDOT:PSS samples, three with isotropic behavior and four with optical anisotropy, were determined. For the anisotropic samples, the ordinary and extraordinary components of the refractive index were described. The effect of the film thickness, measurement technique and preparation method on the extinction coefficient (k) and refractive index (n) of each sample was also discussed. Important differences (up to 20% in the average n) were found among the samples investigated. In most anisotropic films, the mean value of the extraordinary compo

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Niu, Fu, Rui Xia Zhao, and Qing Hua Luan. "Analysis of Precipitation-Complexity Distribution in Changing Environment in Liu-Kuang Zone of Qingzhang River, China." Advanced Materials Research 838-841 (November 2013): 2780–84. http://dx.doi.org/10.4028/www.scientific.net/amr.838-841.2780.

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The frequency and time of precipitation can influence the storage, allocation and management of water resources. But the precipitation frequency becomes more random and the precipitation process becomes more complexity due to the climate change and human activities, which increases the difficulty of technology and management. In this research, the fractal dimension based on Continuous Wavelet Transform (CWT) as the index of the precipitation complexity is applied to describe the precipitation process; using it, the complexity distributions of different precipitation processes in Liu-Kuang zone

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Yu, Xisheng, and Qiang Liu. "Canonical Least-Squares Monte Carlo Valuation of American Options: Convergence and Empirical Pricing Analysis." Mathematical Problems in Engineering 2014 (2014): 1–13. http://dx.doi.org/10.1155/2014/763751.

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The paper by Liu (2010) introduces a method termed the canonical least-squares Monte Carlo (CLM) which combines a martingale-constrained entropy model and a least-squares Monte Carlo algorithm to price American options. In this paper, we first provide the convergence results of CLM and numerically examine the convergence properties. Then, the comparative analysis is empirically conducted using a large sample of the S&P 100 Index (OEX) puts and IBM puts. The results on the convergence show that choosing the shifted Legendre polynomials with four regressors is more appropriate considering th

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Orekhovsky, Petr A. "Review of the monograph: Volgina, N.A., Liu, Pengfei (2023). China in Global Value Chains. Moscow: KNORUS publ., 174 p." RUDN Journal of Economics 31, no. 1 (2023): 184–89. http://dx.doi.org/10.22363/2313-2329-2023-31-1-184-189.

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The review is devoted to the assessment of the monograph by N.A. Volgina and Liu Pengfei “China in Global Value Chains”. Based on the input-output methodological approach and the principle of decomposition of gross exports, the authors come to a number of relevant conclusions that depict the dynamics of China’s participation in global value chains. Thus, the last decades have been characterized by uneven growth of Chinese domestic and foreign value added: domestic value added has grown at a faster rate than foreign value added, and its share in gross exports has gradually increased. At the sam

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Costa e Silva, Maria da Vitoria, Adriano Nascimento da Paixão, Waldecy Rodrigues, and João Aparecido Bazzoli. "CONTRIBUIÇÃO DA INTELIGÊNCIA ARTIFICIAL NO DESENVOLVIMENTO DE ENERGIAS RENOVÁVEIS: UMA REVISÃO BIBLIOMÉTRICA DE LITERATURA." International Journal of Environmental Resilience Research and Science 4, no. 3 (2022): 1–20. http://dx.doi.org/10.48075/ijerrs.v4i3.28946.

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Este artigo objetivou realizar revisão bibliométrica para verificar contribuições da Inteligência Artificial (AI) para as energias renováveis. A metodologia, quantitativa e qualitativa, ancorou-se nos métodos Bibliométricos e Prisma, pela análise de 197 artigos da base de dados Web of Science, desde a publicação inicial em 2011 até novembro 2021. A pesquisa fez uso dos descritores “Artificial Intelligence” and “Renewable Energy”. Os resultados obtidos revelaram que o periódico Energies é o mais relevante (44 artigos), com maior impacto (h-index 11). O autor mais importante é Yutian Liu (6 arti

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Wen, Fei, You Zhang, and Muchun Li. "Spectra of Subdivision Vertex-Edge Join of Three Graphs." Mathematics 7, no. 2 (2019): 171. http://dx.doi.org/10.3390/math7020171.

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In this paper, we introduce a new graph operation called subdivision vertex-edge join (denoted by G 1 S ▹ ( G 2 V ∪ G 3 E ) for short), and then the adjacency spectrum, the Laplacian spectrum and the signless Laplacian spectrum of G 1 S ▹ ( G 2 V ∪ G 3 E ) are respectively determined in terms of the corresponding spectra for a regular graph G 1 and two arbitrary graphs G 2 and G 3 . All the above can be viewed as the generalizations of the main results in [X. Liu, Z. Zhang, Bull. Malays. Math. Sci. Soc., 2017:1–17]. Furthermore, we also determine the normalized Laplacian spectrum of G 1 S ▹ (

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Akpootu, D. O., Simeon Imaben Salifu, M. Idris, et al. "EVALUATION OF NEW DEVELOPED MODELS FOR ESTIMATION OF DIFFUSE SOLAR RADIATION OVER IKEJA, LAGOS STATE, NIGERIA." FUDMA JOURNAL OF SCIENCES 8, no. 2 (2024): 286–95. http://dx.doi.org/10.33003/fjs-2024-0802-2363.

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This study investigates the estimation of diffuse solar radiation in Ikeja, Nigeria (6.58°N, 3.33°E, 39.40m above sea level). Employing a 22-year dataset (2001-2022) of monthly average climatic data from NASA website, nineteen new models were developed to predict diffuse solar radiation. These models incorporated various meteorological parameters including global solar radiation, wind speed, temperature, pressure, and relative humidity. A categorized approach was used, with models falling into five groups: modified Page, Liu and Jordan; clearness index with one additional variable; two-variabl

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Jia, Zhifu, and Cunlin Li. "Saddle-Point Equilibrium Strategy for Linear Quadratic Uncertain Stochastic Hybrid Differential Games Based on Subadditive Measures." Mathematics 12, no. 8 (2024): 1132. http://dx.doi.org/10.3390/math12081132.

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This paper describes a kind of linear quadratic uncertain stochastic hybrid differential game system grounded in the framework of subadditive measures, in which the system dynamics are described by a hybrid differential equation with Wiener–Liu noise and the performance index function is quadratic. Firstly, we introduce the concept of hybrid differential games and establish the Max–Min Lemma for the two-player zero-sum game scenario. Next, we discuss the analysis of saddle-point equilibrium strategies for linear quadratic hybrid differential games, addressing both finite and infinite time hori

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Chu, Yanshuo, Kyung Serk Cho, Isha Khanduri, et al. "Abstract 7417: SpatialCS: A tool to effectively integrate histological annotations and spatial transcriptomics analysis." Cancer Research 84, no. 6_Supplement (2024): 7417. http://dx.doi.org/10.1158/1538-7445.am2024-7417.

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Abstract Spatial transcriptomics is revolutionizing our understanding of tumor ecosystems, providing insights into the spatial dimensions of cell locations, their organization, and interactions within tissues. A key challenge in this field is integrating histological annotations with spatial domains identified through unsupervised clustering methods like SpaGCN. This integration is crucial for accurate spatial domain identification and further analyses. However, clustering results often vary based on parameters such as resolution, leading to inconsistencies with histological annotations. This

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Palmieri, Deborah Anne. "States and Markets: Comparing Japan and Russia. By Guoli Liu. Boulder: Westview Press, 1994. xiii, 165 pp. Index. Hard bound." Slavic Review 54, no. 3 (1995): 824–26. http://dx.doi.org/10.2307/2501831.

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Shridharmurthy, D., K. Lapane, A. Nunes, et al. "POS0206-HPR POSTPARTUM DEPRESSION AMONG REPRODUCTIVE-AGE WOMEN WITH AND WITHOUT RHEUMATIC DISEASE: A POPULATION-BASED MATCHED COHORT STUDY." Annals of the Rheumatic Diseases 82, Suppl 1 (2023): 329.1–329. http://dx.doi.org/10.1136/annrheumdis-2023-eular.1603.

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BackgroundPostpartum depression is a psychiatric illness that occurs after the birth of a child and affects 12.5% of women in the United States (1) and 17.2% of women globally [2]. Women of reproductive age with rheumatic diseases (RD) are at increased risk of clinical depression [3]. However, research examining postpartum depression in women with RD is scarce.ObjectivesWe examined postpartum depression among women with axial spondyloarthritis (axSpA), rheumatoid arthritis (RA), or psoriatic arthritis (PsA) compared to a matched population without RD in the United States.MethodsA retrospective

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Zhang, Shi-Yan, Juan Chen, and Na Cai. "Evaluation of preoperative blood markers for predicting intra-abdominal infection during colorectal cancer resection: A commentary on recent findings." World Journal of Gastrointestinal Surgery 16, no. 10 (2024): 3371–73. http://dx.doi.org/10.4240/wjgs.v16.i10.3371.

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This commentary evaluates the study by Liu et al . This study investigates the predictive utility of the neutrophil-lymphocyte ratio, platelet-lymphocyte ratio, systemic immune-inflammation index, and carcinoembryonic antigen levels for post-operative intra-abdominal infection following colorectal cancer (CRC) surgery. The study highlights the critical need for analyzing diverse patient demographics and delves into the potential impact of various confounding factors on the predictive accuracy of these markers. Additionally, the commentary advocates for the initiation of prospective studies aim

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Gonçalves, Roberta A., Marcos V. Pereira, and Fathi A. Darwish. "On the applicability of multiaxial high cycle fatigue criteria to metallic materials." MATEC Web of Conferences 165 (2018): 16013. http://dx.doi.org/10.1051/matecconf/201816516013.

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A comparative study is made of the applicability of critical plane based multiaxial high cycle fatigue models to predicting the fatigue behavior of metallic materials. A number of models, namely Matake, McDiarmid, Carpinteri and Spagnoli, Liu and Mahadevan and Papadopoulos, were applied to fatigue limit states, involving synchronous fully reversed in-phase sinusoidal bend and torsion loading. The results obtained indicated a good predictive capability of the models with an average error index situated approximately between -5,5% and 4,5%. However, this average was limited to less than 3% for t

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Mai, Zhen-Hao, Yu Huang, Di Huang та ін. "Reversine and herbal Xiang–Sha–Liu–Jun–Zi decoction ameliorate thioacetamide-induced hepatic injury by regulating the RelA/NF-κB/caspase signaling pathway". Open Life Sciences 15, № 1 (2020): 696–710. http://dx.doi.org/10.1515/biol-2020-0059.

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AbstractThis study investigated the anti-fibrotic effects of reversine and Chinese medicine Xiang–Sha–Liu–Jun–Zi decoction (XSLJZD) on thioacetamide (TAA)-induced hepatic injury. Sprague-Dawley rats were intraperitoneally administered with TAA, then injected with reversine intraperitoneally, and/or orally provided with XSLJZD. TAA resulted in liver injury with increases in the liver index and levels of serum aspartate aminotransferase (AST) and alanine aminotransferase. Reversine alleviated the liver index and AST level and improved TAA-induced pathological changes but decreased TAA-induced co

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