Search | Preprints.org

Preprint ARTICLE | doi:10.20944/preprints202108.0140.v1

A Comparison of K-Means and Mean Shift Algorithms

Mehak Nigar Shumaila

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: K-Mean, Mean-Shift, Performance, Accuracy

Online: 5 August 2021 (11:00:32 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201906.0195.v1

A Novel Hybrid Segmentation Method with Particle Swarm Optimization and Fuzzy C-Mean Based On Partitioning the Image for Detecting Lung Cancer

Kavitha P., Prabakaran S.

Subject: Computer Science And Mathematics, Information Systems Keywords: adaptive bilateral; marker watershed; PSO; fuzzy C-mean; GLCM; SVM

Online: 20 June 2019 (09:22:05 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202306.2037.v1

Furthering Automatic Feature Extraction for Fit-for-Purpose Cadastral Updating: Cases from Peri-Urban Addis Ababa, Ethiopia

Mekonnen Tesfaye Metaferia, Rohan Mark Bennett, Berhanu Kefale Alemie, Mila Koeva

Subject: Environmental And Earth Sciences, Remote Sensing Keywords: Automatic Feature Extraction; Cadastral mapping; Fit-for-purpose; Interactive delineation; Mean-shift segmentation; Random Forest classification; Land administration

Online: 29 June 2023 (03:03:19 CEST)

Show abstract| Download PDF| Share

Fit-for-purpose land administration (FFPLA) seeks to simplify cadastral mapping via lowering the costs and time associated with conventional surveying methods. The approach can be applied to both initial establishment and on-going maintenance of system. In Ethiopia, cadastral maintenance remains an on-going challenge, especially in rapidly urbanizing peri-urban areas, where farmers' land rights and tenure security are often jeopardized. Automatic Feature Extraction (AFE) is an emerging FFPLA approach, proposed as an alternative for mapping and updating cadastral boundaries. This study explores the role of the AFE approach for updating cadastral boundaries in the vibrant peri-urban areas of Addis Ababa. Open-source software solutions are utilized to assess the (semi-) automatic extraction of cadastral boundaries from orthophotos (segmentation), designation of 'boundary' and 'non-boundary' outlines (classification), and delimitation of cadastral boundaries (interactive delineation). Both qualitative and quantitative assessments of the achieved results (validation) are undertaken. A high-resolution orthophoto of the study area and a reference cadastral boundary shape file are used, respectively, for extracting the parcel boundaries and validating the interactive delineation results. Qualitative (visual) assessment verified the completed extraction of newly constructed cadastral boundaries in the study area, although non-boundary outlines such as footpaths and artefacts are also retrieved. For the buffer overlay analysis, the interactively delineated boundary lines and the reference cadastre were buffered within the spatial accuracy limits for urban and rural cadasters. As a result, the quantitative assessment delivered 52% correctness and 32% completeness for a buffer width of 0.4m and 0.6m, respectively, for the interactively delineated and reference boundaries. The study further demonstrated the potentially significant role AFE could assist in delivering fast, affordable, and reliable cadastral mapping. Further investigation, based on user input and expertise evaluation, could help to improve the approach and apply it to a real-world setting.

Preprint BRIEF REPORT | doi:10.20944/preprints202004.0455.v1

Exploring Students’ Understanding of Statistical Mean

Md Amiruzzaman

Subject: Computer Science And Mathematics, Probability And Statistics Keywords: statistics; mean; weighted mean; average; mathematical thinking

Online: 25 April 2020 (02:50:55 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201710.0199.v1

Improving Quantitative Rainfall Prediction Using Ensemble Analogues in the Tropics: Case study of Uganda

Isaac Mugume, Michel d. S. Mesquita, Yazidhi Bamutaze, Didier Ntwali, Charles Basalirwa, Daniel Waiswa, Joachim Reuder, Revocatus Twinomuhangi, Fredrick Tumwine, Triphonia Jakob Ngailo, Bob Alex Ogwang

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: Ensemble mean; Analogue ensemble mean; Multi–member analogue ensemble mean; Quantitative rainfall prediction

Online: 31 October 2017 (16:28:54 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201705.0039.v1

Integral Representations for Bivariate Complex Geometric Mean and Applications

Feng Qi, Dongkyu Lim

Subject: Computer Science And Mathematics, Analysis Keywords: Lévy--Khintchine representation; integral representation; bivariate mean; bivariate complex geometric mean; reciprocal; Heronian mean; application

Online: 4 May 2017 (08:44:25 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201809.0608.v1

Hyers-Ulam Stability of Lagrange's Mean Value Points in Two Variables

Soon-Mo Jung, Ji-Hye Kim

Subject: Computer Science And Mathematics, Analysis Keywords: Hyers-Ulam stability; mean value theorem; Lagrange's mean value point; two-dimensional Lagrange's mean value point

Online: 30 September 2018 (10:42:59 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202102.0428.v1

Color Changes in Ag Nanoparticle Aggregates Placed in Various Environments: Their Application to Air Monitoring

Koichi Ozaki, Fumitaka Nishiyama, Katsumi Takahiro

Subject: Chemistry And Materials Science, Biomaterials Keywords: Ag nanoparticle; localized surface plasmon resonance; color; red-shift; blue-shift

Online: 19 February 2021 (09:52:47 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201909.0298.v1

Undirected Graphs: Is the Shift-Enabled Condition Trivial or Necessary?

Liyan Chen, Samuel Cheng, Kanghang He, Lina Stankovic, Vladimir Stankovic

Subject: Computer Science And Mathematics, Computer Vision And Graphics Keywords: graph signal processing; shift-enabled graphs; shift-invariant filter; undirected graph

Online: 26 September 2019 (11:03:47 CEST)

Show abstract| Download PDF| Share

Working Paper BRIEF REPORT

Experiences of being a Couple and Working by Shifts in the Mining Industry: Continuities

jimena silva, Pablo Zuleta, Estefany Castillo, Tarut Segovia-Chinga

Subject: Social Sciences, Sociology Keywords: couple; shift work; gender; Chile

Online: 5 January 2021 (17:12:44 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202305.0137.v1

Optical Window to Polarity of Electrolyte Solutions

Omar O'Mari, Valentine I. Vullev

Subject: Chemistry And Materials Science, Physical Chemistry Keywords: Stokes’ shift; dipole; absorption; fluorescence; refractometry

Online: 3 May 2023 (10:49:45 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202106.0573.v1

Newly Proposed Matrix Reduction technique Under Mean Ranking Method for Solving Trapezoidal Fuzzy Transportation problems Under Fuzzy Environment

Tekalign Regasa Ashale

Subject: Computer Science And Mathematics, Computer Science Keywords: Mean; Mean of Trapezoidal Fuzzy Numbers; Trapezoidal Fuzzy Numbers; Transportation Problem; and Fuzzy Transportation Problem

Online: 23 June 2021 (11:17:57 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201807.0405.v1

Heronian Means as Aggregation Operators for Multi-Attribute Decision Making Applications

Xiaopu Shang, Jun Wang, Anupam Nanda, Weizi Li

Subject: Computer Science And Mathematics, Mathematics Keywords: interval-valued intuitionistic fuzzy set; aggregation operator; Heronian mean; geometric Heronian mean; multi-attribute decision making

Online: 23 July 2018 (05:29:46 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201701.0126.v1

Iron Deficiency Anemia (IDA) in Pregnant Women of Different Ages in Swat District, Khyber Pakhtunkhwa Pakistan

Atta Ullah, Ali Muhammad Yousafzai, Gul Nabi Khan, Nasir Iqbal, Bashir Ahmad

Subject: Biology And Life Sciences, Animal Science, Veterinary Science And Zoology Keywords: anemia; iron deficiency; pregnancy; serum ferritin; mean corpuscular volume (mcv); mean corpuscular hemoglobin (MCH); Northern Pakistan

Online: 27 January 2017 (03:46:07 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202306.1934.v1

The Transformation of Coastal Governance Pattern from Human Ecology to Political Ecology—A Case Study of Jimei Peninsula, Xiamen, China

Zhe Zou, Yu-Yan Zhang, Su-Hsin Lee, Shu-Chen Tsai

Subject: Social Sciences, Geography, Planning And Development Keywords: Coastal Exclusion Policy; Governance; Scale; Function Shift

Online: 27 June 2023 (15:28:07 CEST)

Show abstract| Download PDF| Share

Preprint HYPOTHESIS | doi:10.20944/preprints202011.0544.v2

On Carboniferous Gigantism and Atomic Shrinking

Alain Haraux

Subject: Physical Sciences, Biophysics Keywords: atoms; nucleus, electrons; energy; spectral shift; polymers

Online: 23 November 2020 (09:46:17 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201904.0002.v1

Colorimetric Detection of Mercury Ions in Water with Capped Silver Nanoprisms

Fouzia Tanvir, Atif Yaqub, Shazia Tanvir, Ran An, William A. Anderson

Subject: Chemistry And Materials Science, Nanotechnology Keywords: nanoparticles; spectral blue shift; amalgam; water quality

Online: 1 April 2019 (08:21:19 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201806.0013.v1

Trust and Distress Prediction in Modal Shift Potential of Long-Distance Road Freight in Containers: Modelling Approach in Transport Services for Sustainability

Elżbieta Szaruga, Elżbieta Skąpska, Elżbieta Załoga, Wiesław Matwiejczuk

Subject: Business, Economics And Management, Econometrics And Statistics Keywords: sustainability; trust; distress; transport services; road freight transport; modal shift potential; shift paradigm; modelling; prediction; General Discriminant Analysis

Online: 1 June 2018 (10:44:39 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202312.1489.v1

The CMB Temperature as Geometric Mean Gravitational Potential Energy and Also Its Connection to the Electrostatic Force

Espen Haug

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: CMB temperature; Gravitational potential energy; geometric mean

Online: 20 December 2023 (10:50:43 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202307.1650.v2

Kernel Geometric Mean Metric Learning

Zixin Feng, Teligeng Yun, Yu Zhou, Ruirui Zheng, Jianjun He

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: metric learning; kernel methods; weighted geometric mean

Online: 1 August 2023 (11:46:59 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201706.0002.v1

Assessing Probabilistic Inference by Comparing the Generalized Mean of the Model and Source Probabilities

Kenric P. Nelson

Subject: Computer Science And Mathematics, Information Systems Keywords: probability; inference; information theory; Bayesian; generalized mean

Online: 1 June 2017 (05:49:21 CEST)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202306.1115.v1

A Paradigm Shift in the Entertainment Industry in the Digital Age: A Critical Review

Dr. Bharat Dhiman

Subject: Arts And Humanities, Film, Radio And Television Keywords: media; digital media; entertainment; paradigm shift; digital age

Online: 15 June 2023 (09:40:35 CEST)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202203.0226.v1

On Arabic Language Maintenance Among Arabs Living in Western Countries: A Review of Literature

Mohamed Elhedi Bouhdima

Subject: Social Sciences, Language And Linguistics Keywords: Arabic; Arabs; Language Maintenance; Language Shift; Western Countries

Online: 16 March 2022 (08:28:43 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201905.0224.v1

Generation and Nonlinear Frequency Conversion of Nanosecond Cylindrical Vector Beams in Two-Mode Fiber

Wending Zhang, Lu Zhang, Xin Li, Fanfan Lu, Chao Meng, Min Liu, Dexing Yang, Ting Mei

Subject: Physical Sciences, Optics And Photonics Keywords: cylindrical vector beam, stimulated Raman scatting, Stokes shift.

Online: 17 May 2019 (11:11:32 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202402.1328.v1

Removable Singularities of Harmonic Functions on Stratified Sets

Nurlan S. Dairbekov, Oleg M. Penkin, Denis V. Savasteev

Subject: Computer Science And Mathematics, Mathematics Keywords: stratified measure; soft Laplacian; mean value; gradient flux

Online: 23 February 2024 (08:35:24 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202306.1625.v1

Large Scale Portfolio Optimization Using Biogeography-Based Optimization

Wendy Wijaya, Kuntjoro Adji Sidarto

Subject: Computer Science And Mathematics, Data Structures, Algorithms And Complexity Keywords: biogeography-based optimization; constrained optimization; mean-variance model

Online: 22 June 2023 (12:34:58 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202101.0611.v1

Evaluation and Projection of Mean Surface Temperature Using CMIP6 Models Over East Africa

Brian Ayugi, Hamida Ngoma, Hassen Babaousmail, Riwzan Karim, Vedaste Iyakaremye, Kenny T.C. Lim Kam Sian, Victor Ongoma

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: Mean surface temperature; CMIP6; evaluation; projections; East Africa

Online: 29 January 2021 (11:35:29 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202005.0347.v1

Fault Diagnosis of Gearbox with a Transferable Deep Neural Network

Greg Smith, Masayoshi Shibatani

Subject: Engineering, Mechanical Engineering Keywords: deep learning; maximum mean discrepancy; gearbox; fault detection

Online: 22 May 2020 (05:21:56 CEST)

Show abstract| Download PDF| Share

Working Paper ARTICLE

Dynamic of Stochastic Epidemic Model Based on the Association Between Susceptible and Recovered Individuals

Luyao Xin, Yingxin Guo, Quanxin Zhu

Subject: Computer Science And Mathematics, Applied Mathematics Keywords: extinction; permanence in mean; stability; stochastic epidemic model

Online: 30 May 2019 (10:53:58 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201707.0090.v1

Kelly's Criterion in Portfolio Optimization: A Decoupled Problem

Zachariah Peterson

Subject: Computer Science And Mathematics, Applied Mathematics Keywords: portfolio optimization; Kelly criterion; differential evolution; mean-variance

Online: 31 July 2017 (11:22:09 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202010.0355.v1

Downtime Data Analysis Based on Maximum Likelihood (MLE) to Estimate Parameters of Reliability Distributions

Afrah Al-Bossly

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: Probability Distribution Function; Weibull Distribution; Parameter Estimation; Mean Time Between Failures; Failure Rate; Mean Time To Repair; Downtime and Reliability

Online: 16 October 2020 (14:52:26 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202403.1673.v1

Experiments Conducted to Date to Verify the Relativistic Gravitational Time Dilation Have Limited Scientific Significance

Reiner Georg Ziefle

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: General relativity (GR); gravitational time dilation; gravitational red shift

Online: 28 March 2024 (04:32:40 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202403.0152.v1

Integrating Bayesian Classification into a Mobile App for Enhanced ACL Assessment: “Pivot-Shift Meter App”

Edmundo Berumen Nafarrate, Iván René Ramos Moctezuma, Luis Raúl Sigala González, Fatima Norely Quintana Trejo, Jesus Javier Tonche Ramos, Nadia Karina Portillo Ortiz, Carlos Eduardo Cañedo Figueroa, Arturo Aguirre Madrid

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: ACL; Bayesian classifier; Mobile application; Pivot-Shift; Rotational stability

Online: 6 March 2024 (04:18:04 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202207.0134.v1

Effect of Various Parameter on Perihelion Shift and Deflection Angle in Reissner-Nordstrom Spacetime

Surajit Mandal

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: perihelion shift; bending of light; Reissner-Nordstrom Black Hole

Online: 8 July 2022 (06:44:31 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202404.0074.v1

PTSD Case Detection with Boosting

Vu Nguyen, Minh Phan, Tiantian Wang, Payam Norouzzadeh, Eli Snir, Salih Tutun, Brett McKinney, Bahareh Rahmani

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: Linear Support Vector Machine; K-mean Clustering; PTSD; EEG

Online: 2 April 2024 (12:45:01 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202305.0252.v3

From Optimal Control to Optimal Transport via Stochastic Neural Networks in the Mean Field Setting

Matteo Garbelli, Luca Di Persio

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: Neural Network; Machine Learning; Optimal Transport; Mean Field Control

Online: 20 June 2023 (11:12:07 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202304.0508.v2

Scalar Product for a Version of Minisuperspace Model with the Grassmann Variables

Sergey L. Cherkas, Vladimir L. Kalashnikov

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: minisuperspace model; quantum evolution; ghost variables; operator mean values

Online: 9 June 2023 (05:45:13 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202212.0154.v1

Risk Factors for Neonatal Hypothermia at Arba Minch General Hospital, Ethiopia

Tilahun Ferede Asena, Tegenu Tento, Meseret Alemayehu, Asmare Wube

Subject: Medicine And Pharmacology, Pediatrics, Perinatology And Child Health Keywords: Mean sojourn time; Multi-state Markov model; Transition rate

Online: 8 December 2022 (09:55:34 CET)

Show abstract| Download PDF| Supplementary Files| Share

Background: The first few minutes after birth are the most dangerous for the survival of an infant. Babies in neonatal intensive care units are either under heated or overheated, and hypothermic infants remain hypothermic or develop a fever. As a result, special attention must be paid to monitoring and maintaining the time of recovery from hypothermia states. Despite numerous studies, only a few have examined the transition from neonatal hypothermia and associated risk factors in depth. Method: A retrospective observational study was conducted to track axillary temperatures taken at the time of neonatal intensive care unit admission, which were then tracked every 30 minutes until the newborn's temperature stabilized. All hypothermic neonates admitted to the neonatal intensive care unit between January 2018 and December 2020 was included in the study. Temperature data were available at birth and within the first three hours of admission for 391 eligible hypothermic neonates. The effect of factors on the transition rate in different states of hypothermia was estimated using a multi-state Markov model. Result: The likelihood of progressing from mild to severe hypothermia was 5%, while the likelihood of progressing to normal was 34%. The average time spent in a severe hypothermia state was 48, 35, and 24 minutes for three different levels of birth weight, and 53, 41, and 31 minutes for low, moderate, and normal Apgar scores, respectively. Furthermore, the mean sojourn time in a severe hypothermia state was 48, 39, and 31 minutes for three different levels of high, normal, and low pulse rate, respectively. Conclusion: For hypothermic survivors within the first three hours of life, very low birth weight, low Apgar, and high pulse rate had the strongest association with hypothermia and took the longest time to improve/recover. As a result, there is an urgent need to train all levels of staff dealing with maintaining the time of recovery from neonatal hypothermia.

Preprint ARTICLE | doi:10.20944/preprints202106.0571.v2

HIOP-Reader: Automated Data Extraction for the Analysis of Manually Recorded Nycthemeral IOPs and Glaucoma Progression

Vaia Agorastou, Julian Schoen, Raoul Verma-Fuehring, Mohamad Dakroub, Jost Hillenkamp, Frank Puppe, Nils A. Loewen

Subject: Medicine And Pharmacology, Ophthalmology Keywords: glaucoma progression; nycthemeral intraocular pressure; mean ocular perfusion pressure

Online: 1 July 2021 (11:08:41 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202309.2053.v1

Frequency Shift Monitoring of Optical Filter Based on Optical Labels Over FTN-WDM Transmission Systems

Kaixuan Li, Tao Yang, Xue Wang, Sheping Shi, Liqian Wang, Xue Chen

Subject: Engineering, Telecommunications Keywords: optical labels; pilot tone; frequency shift monitoring; faster-than-Nyquist

Online: 29 September 2023 (04:11:03 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202307.1662.v1

Structural Studies of Monounsaturated and ω-3 Polyunsaturated Free Fatty Acids in Solution with the Combined Use οf NMR and DFT calculations -Comparison with the Liquid State

Ioannis P. Gerothanassis, Michael G. Siskos, Georgios Papamokos, Themistoklis Venianakis

Subject: Chemistry And Materials Science, Organic Chemistry Keywords: 1D 1H NOE; 1H chemical shift; ALA; EPA; DHA; DFT

Online: 25 July 2023 (07:33:59 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202305.0114.v1

Frequency-Shift of Quartz Crystal Microbalance Depends on the Length of Actin Filaments

Naoki Matsumoto, Honoka Kobayashi, Taiki Nishimura, Hideki Ashizawa, Takashi Kuwahara, Hajime Honda, Ikuko Fujiwara

Subject: Engineering, Bioengineering Keywords: quartz crystal microbalance; actin; positive frequency shift; physical property; biomolecule

Online: 3 May 2023 (08:14:11 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202212.0484.v1

Photonics-based Simultaneous DFS and AOA Measurement system Without Direction Ambiguity

Qing qing Meng, Zi hang Zhu, Guo dong Wang, He Li, Ling rui Xie, Shang hong Zhao

Subject: Engineering, Electrical And Electronic Engineering Keywords: Doppler frequency shift; Angle of arrival; Microwave photonics; Sagnac loop.

Online: 26 December 2022 (10:49:47 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201804.0287.v1

Low-Frequency Sea Surface Radar Doppler Echo

Yury Yu. Yurovsky, Vladimir N. Kudryavtsev, Semyon A. Grodsky, Bertrand Chapron

Subject: Environmental And Earth Sciences, Oceanography Keywords: Radar; ocean; backscatter; Doppler shift; wave groups; non-linearity; modulation

Online: 23 April 2018 (11:46:21 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202311.0228.v1

Robo Advising and Investor Profiling

Raquel M. Gaspar, Madalena Oliveira

Subject: Business, Economics And Management, Finance Keywords: robo-advisor; mean variance theory; expected utility theory; sharpe ratio

Online: 3 November 2023 (09:45:42 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202311.0012.v1

Analysis of Hemogram and C-reactive protein in Viral Gastroenteritis: Insights into Inflammatory Response

Pınar Onal, Abdulkadir Bozaykut

Subject: Medicine And Pharmacology, Pediatrics, Perinatology And Child Health Keywords: rotavirus; adenovirus; children; gastroenteritis; mean platelet volume; neutrophil/lymphocyte value

Online: 1 November 2023 (04:06:48 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202310.0959.v1

Minimizing Impermanent Loss in Asset-Pair Balancer Pools

Neil Pattanaik

Subject: Computer Science And Mathematics, Other Keywords: Impermanent Loss; Liquidity Pools; Geometric Mean Market Makers; Optimization; DeFi

Online: 16 October 2023 (10:03:46 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202309.1255.v1

Mean-Field Analysis with Random Perturbations to Detect Gliders in Cellular Automata

Juan Carlos Seck-Tuoh-Mora, Joselito Medina-Marin, Norberto Hernández-Romero, Genaro J. Martínez

Subject: Computer Science And Mathematics, Computer Science Keywords: cellular automata; mean-field theory; gliders detection; complexity; random amplification

Online: 19 September 2023 (15:27:10 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202308.0066.v1

Meson-Exchange Currents in Quasielastic Electron Scattering in a Generalized Superscaling Approach

Paloma Rodriguez Casale, Jose Enrique Amaro, Maria B. Barbaro

Subject: Physical Sciences, Nuclear And High Energy Physics Keywords: superscaling; quasielastic electron scattering; meson-exchange currents, relativistic mean field

Online: 1 August 2023 (10:55:29 CEST)

Show abstract| Download PDF| Share

Working Paper ARTICLE

Weighted Geometric Mean and its Properties

Ievgen Turchyn

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: Central tendency; Weighted geometric mean; means; variance; non-parametric statistics

Online: 6 April 2021 (14:02:04 CEST)

Show abstract| Download PDF| Share

Working Paper ARTICLE

A Quadratic Mean Field Games Model for the Langevin Equation

Fabio Camilli

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: Langevin equation; Mean Field Games system; kinetic Fokker-Planck equation

Online: 12 January 2021 (09:31:54 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202001.0208.v1

A Bottom-up Approach for Pig Skeleton Extraction Using RGB Data

Akif Quddus Khan, Salman Khan

Subject: Computer Science And Mathematics, Computer Science Keywords: pig; behavior analysis; hourglass; stacked dense-net; K-mean sampler

Online: 19 January 2020 (04:40:15 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201804.0004.v1

Experimental Investigation of propeller Wake Velocity Field for the Major Factors Affecting Propeller Wake Wash

Md. Asif Amin, Bruce Colbourne, Brian Veitch

Subject: Engineering, Marine Engineering Keywords: ship’s propeller jet; mean axial velocity of flow; prediction equations

Online: 1 April 2018 (16:07:01 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202308.2013.v1

Enhancing Quality Control of Chip Seal Construction through Machine Learning-Based Analysis of Surface Frictional Metrics

Jieyi Bao, Joseph Adcock, Shuo Li, Yi Jiang

Subject: Engineering, Civil Engineering Keywords: chip seal; quality control; quality acceptance; macro-texture; mean segment depth; mean profile depth; machine learning; DBSCAN-Isolation Forest; proportion control chart; anomaly detection

Online: 30 August 2023 (10:15:21 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201711.0124.v1

NN-Harmonic Mean Aggregation Operators Based MCGDM Strategy in Neutrosophic Number Environment

Kalyan Mondal, Surapati Pramanik, Bibhas C. Giri, Florentin Smarandache

Subject: Computer Science And Mathematics, Applied Mathematics Keywords: neutrosophic number; neutrosophic number harmonic mean operator (NNHMO); neutrosophic number weighted harmonic mean operator (NNWHMO); cosine function, score function; multi criteria group decision making

Online: 20 November 2017 (09:53:31 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202403.1534.v1

Bifunctional Effects of Lactoferrin (LFcinB11) in Inhibiting Neural Cell Adhesive Molecule (NCAM) Polysialylation and Neutrophil Extracellular Traps (NET) Release

Bo Lu, Si-Ming Liao, Shi-Jie Liang, Li-Xin Peng, Jian-Xiu Li, Xue-Hui Liu, Ri-Bo Huang, Guo-Ping Zhou

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: polysialic acid; polysialyltransferase; polysialyltransferase domain; chemical shift perturbation; NMR spectroscopy; Lactoferrin

Online: 26 March 2024 (06:31:02 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202402.0480.v1

Based on Absolute Airspace Reference System Analysis of Doppler Effect of Light (Electromagnetic Wave)

Shandong Zhao, Yijia Zhao

Subject: Physical Sciences, Optics And Photonics Keywords: absolute airspace; Doppler effect; Time shift effect; Time-frequency relation; anisotropy

Online: 8 February 2024 (07:31:59 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202310.0406.v1

A Fitted Numerical Scheme with Algorithm for Singularly Perturbed Parabolic Partial Differential Equations with Large Negative Shift

Ababi H. Ejere, Gemechis File Duressa

Subject: Computer Science And Mathematics, Computational Mathematics Keywords: Singular perturbation; Boundary layer; Interior layer; Negative shift term; Uniform convergence

Online: 7 October 2023 (09:31:16 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202309.1831.v1

Phase Shift and Infinitesimal Wave Energy Loss Equations

Soumendra Nath Thakur, Deep Bhattacharjee

Subject: Physical Sciences, Mathematical Physics Keywords: Phase Shift, Phase Angle, Time Distortion, Wave Energy Loss, Wave Phenomena

Online: 27 September 2023 (05:00:38 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202308.1352.v1

Oral Iron Absorption of Ferric Citrate Hydrate and Hepcidin-25 in Hemodialysis Patients: A Prospective, Multicenter, Observational Riona-Oral Iron Absorption Trial

Naohisa Tomosugi, Yoshitaka Koshino, Chie Ogawa, Kunimi Maeda, Noriaki Shimada, Kimio Tomita, Shoichiro Daimon, Tsutomu Shikano, Kazuyuki Ryu, Toru Takatani, Kazuya Sakamoto, Satonori Ueyama, Daisuke Nagasaku, Masato Nakamura, Shibun Ra, Masataka Nishimura, Chieko Takagi, Yoji Ishii, Noritoshi Kudo, Shinsuke Takechi, Takashi Ishizu, Takamoto Yanagawa, Masamichi Fukuda, Yutaka Nitta, Takayuki Yamaoka, Taku Saito, Suzuko Imayoshi, Momoyo Omata, Joji Oshima, Akira Onozaki, Hiroaki Ichihashi, Yasuhisa Matsushima, Hisahito Takae, Ryoichi Nakazawa, Koichi Ikeda, Masato Tsuboi, Keiko Konishi, Shouzaburo Kato, Maki Ooura, Masaki Koyama, Tsukasa Naganuma, Makoto Ogi, Shigeyuki Katayama, Toshiaki Okumura, Shigemi Kameda, Sayuri Shirai

Subject: Medicine And Pharmacology, Urology And Nephrology Keywords: oral iron absorption; ferric citrate hydrate; hemodialysis; hepcidin-25; iron shift

Online: 18 August 2023 (11:20:29 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202212.0278.v1

Unsupervised Analysis of Small Molecule Mixtures by Wavelet-Based Super-Resolved NMR

Aritro Sinha Roy, Madhur Srivastava

Subject: Chemistry And Materials Science, Physical Chemistry Keywords: NMR; shift spectra; wavelet packet transform; automated small molecule mixture analysis

Online: 15 December 2022 (09:00:55 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202211.0232.v1

Electron Tunneling in Biology: When Does it Matter?

Setare M. Sarhangi, Dmitry V. Matyushov

Subject: Chemistry And Materials Science, Physical Chemistry Keywords: Protein electron transfer; tunneling; protein dynamics; electrowetting; Stokes-shift dy-namics

Online: 14 November 2022 (02:52:47 CET)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202207.0055.v1

Defanging Chloroform – Mitigation of Deuterated Chloroform Decomposition to Stabilise Susceptible NMR Samples

Jan Teipel, Vera Gottstein, Eva Hölzle, Katja Kaltenbach, Dirk W. Lachenmeier, Thomas Kuballa

Subject: Chemistry And Materials Science, Analytical Chemistry Keywords: NMR; chemometrics; chloroform; phosgene; hydrochloric acid; sample degradation; pH-shift; protonation

Online: 5 July 2022 (03:53:09 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202108.0068.v1

Analysis of Accommodation Gain of Presbyopia Eye after Laser Ablation (or Shrinkage) of Sclera via Lens Reshaping and Anterior Shift

Jui-Teng Lin

Subject: Medicine And Pharmacology, Ophthalmology Keywords: Presbyopia; accommodation; scleral ablation; ciliary body; lens reshaping; lens anterior shift

Online: 3 August 2021 (09:52:52 CEST)

Show abstract| Download PDF| Share

Preprint COMMUNICATION | doi:10.20944/preprints202009.0093.v1

Bridging Macro and Micro Cosmos by a New Sight on “Photon Aging” – A Simple Approach for Explaining Diracs Large Numbers

J. Michael Köhler

Subject: Physical Sciences, Mathematical Physics Keywords: Red shift; Photons; Quantum delocalization; Energy dissipation; Hubble constant; Large numbers

Online: 4 September 2020 (08:39:15 CEST)

Show abstract| Download PDF| Share

Preprint CONCEPT PAPER | doi:10.20944/preprints202005.0245.v1

Advent of ‘Economic Paradigm Shift’ and 5G during the Post-COVID19 Revival Phase

WHMS Samarathunga

Subject: Business, Economics And Management, Economics Keywords: COVID19; economic paradigm shift; economic failures; post-COVID19 economy; 5G technology

Online: 15 May 2020 (03:35:16 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201912.0402.v1

Bio-Universe Model

Amrit Srecko Sorli, Štefan Čelan

Subject: Physical Sciences, Quantum Science And Technology Keywords: multidimensional dynamic quantum vacuum; origin of life; CMBR; cosmological red-shift

Online: 31 December 2019 (04:19:42 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201907.0011.v1

An Efficient FPGA-based Frequency Shifter for LTE/LTE-A Systems

Felipe Augusto Pereira de Figueiredo

Subject: Engineering, Telecommunications Keywords: LTE, LTE-A, 4G, PRACH, NCO, time-domain frequency shift, FPGA

Online: 1 July 2019 (11:52:58 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202401.1070.v1

Exact Closed-Form M/D/c Queueing Delay Formula

David Tung Chong Wong

Subject: Computer Science And Mathematics, Mathematics Keywords: M/D/c Queue; Poisson Arrivals; Deterministic (Constant) Service Time; c Multiple Servers; root(s) of an equation; mean number of customers; mean queueing delay

Online: 15 January 2024 (08:50:49 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202403.1655.v1

Modelling of Real Gas Compression Using the Finite Volume Thermofluid Network Methodology and Mean-Line Approach for Centrifugal Compressors

Ryno Laubscher, Pieter Rousseau, Johan van der Spuy, Colin Du Sart, Johannes P. Pretorius

Subject: Engineering, Mechanical Engineering Keywords: Supercritical CO2; compressor mean line model; finite volume thermofluid network methodology

Online: 27 March 2024 (06:39:20 CET)

Show abstract| Download PDF| Share

A novel compressible real gas 1D finite volume thermofluid network modelling methodology is proposed that can be applied in the analysis of supercritical CO₂ (sCO2) power cycles. It is applied to simulate centrifugal compressor performance via a mean line approach that directly solves the mass, energy, and momentum balance equations for the discretized flow channels within the machine along with the associated loss models, component characteristics, and applicable compressible real gas equation of state. This can be integrated seamlessly with the rest of the power cycle components like pipes, valves, heat exchangers, etc., thereby eliminating the need for static performance maps and the associated difficulties to ensure similarity over the whole range of operation. This direct simulation of the internal flows also makes it possible to do integrated cycle design optimization that includes the geometry of the compressors, and to simulate fast transients for dynamic analysis. The methodology was applied to simulate well-documented air and sCO2 centrifugal compressors and compared the generated results with that of conventional thermofluid network incompressible and compressible ideal gas approaches. The results indicate that the proposed compressible real gas approach can capture the stagnation pressure changes and isentropic efficiencies with good accuracy for both cases over the whole range of mass flow rates and shaft rotational speeds. In contrast, the conventional thermofluid network incompressible and compressible ideal gas approaches are only applicable in selected regions of the fluid property regime and suffer from discretization errors and inappropriate treatment of the relationship between stagnation and static pressures. Furthermore, comparative analyses between the newly proposed approach and the traditional mechanical energy balance method are performed, showing that the latter approach needs to be discretized more finely through the compression process to correctly capture the polytropic compression path shape, whereas the former more accurately captures the stagnation pressure changes through the analyzed compressors with only a single increment per compressor component.

Preprint ARTICLE | doi:10.20944/preprints202303.0118.v1

Improved Superscaling in Quasielastic Electron Scattering with Relativistic Effective Mass

Paloma Rodriguez Casale, Jose Amaro, Victor Martinez-Consentino, Ignacio Ruiz Simo

Subject: Physical Sciences, Nuclear And High Energy Physics Keywords: quasielastic electron scattering; superscaling analysis; relativistic mean field; relativistic effective mass

Online: 7 March 2023 (02:04:58 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202009.0024.v1

Characteristics of LDAPS-predicted Surface Wind Speed and Temperature at Automated Weather Stations with Different Surrounding Land Cover and Topography in Korea

Dong-Ju Kim, Geon Kang, Do-Yong Kim, Jae‒Jin Kim

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: AWS; land cover; LDAPS; mean bias error; temperature; topography; wind speed

Online: 2 September 2020 (05:00:09 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201912.0015.v1

Evaluation on Sports Facility Resource in Primary School Using a Combined Approach of Unsupervised Machine Learning: a Case Study of Shanghai, China

Jun Xia, Pei-Jie Chen, Ji-Hong Wang, Jie Zhuang, Zhen-Bo Cao, Qiang Zhang

Subject: Social Sciences, Tourism, Leisure, Sport And Hospitality Keywords: school sports facility; assessment; t-sne; fuzzy c mean; unsupervised learning

Online: 3 December 2019 (05:24:26 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201708.0066.v1

A Software Reliability Model with a Weibull Fault Detection Rate Function Subject to Operating Environments

Kwang Yoon Song, In Hong Chang, Hoang Pham

Subject: Engineering, Control And Systems Engineering Keywords: non-homogeneous poisson process; software reliability; weibull function; mean square error

Online: 18 August 2017 (13:05:46 CEST)

Show abstract| Download PDF| Share

Preprint COMMUNICATION | doi:10.20944/preprints202404.1354.v1

Grating (Moiré) Microinterferometric Displacement/Strain Sensor with Polarization Phase Shift

Leszek Sałbut, Dariusz Łukaszewski, Aleksandra Piekarska

Subject: Control And Systems Engineering, Engineering Keywords: grating (moiré; ) interferometry; waveguide sensor; polarization fringe phase shift; displacement measurement

Online: 22 April 2024 (13:35:42 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202305.0716.v1

Correlations in Compositional Data without Log-Transformations

Yury Monich, Yury Nechipurenko

Subject: Computer Science And Mathematics, Probability And Statistics Keywords: compositional data; mathematical expectation shift; loss of degrees of freedom; hybrid model

Online: 10 May 2023 (08:57:50 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202304.0033.v1

Leaf Phenological Responses of Juvenile Beech and Oak Provenances to Elevated Phosphorus

Marko Bačurin, Saša Bogdan, Ida Katičić Bogdan, Krunoslav Sever

Subject: Biology And Life Sciences, Forestry Keywords: Fagus sylvatica; Quercus petraea; flushing; leaf senescence; nutrition; phosphorus effect; phenology shift

Online: 4 April 2023 (02:36:38 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202206.0330.v1

Determining the Severity of Open and Closed Cracks Using the Strain Energy Loss and the Hill-Climbing Method

Cristian Tufisi, Catalin V. Rusu, Nicoleta Gillich, Marius Vasile Pop, Codruta Oana Hamat, Christian Sacarea, Gilbert-Rainer Gillich

Subject: Engineering, Mechanical Engineering Keywords: crack severity; strain energy loss; beam deflection; frequency shift; hill-climbing method

Online: 24 June 2022 (04:46:40 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202203.0396.v2

Doppler Shift Tolerance of Typical Pseudorandom Binary Sequences in PMCW Radar

Lucas Giroto de Oliveira, Theresa Antes, Benjamin Nuss, Elizabeth Bekker, Akanksha Bhutani, Axel Diewald, Mohamad Basim Alabd, Yueheng Li, Mario Pauli, Thomas Zwick

Subject: Engineering, Electrical And Electronic Engineering Keywords: Doppler shift; periodic autocorrelation function; phase-modulated continuous wave; pseudorandom sequence; radar

Online: 14 April 2022 (12:08:53 CEST)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202101.0549.v1

Potential Role of Birds in Japanese Encephalitis Virus Zoonotic Transmission and Genotype Shift

Muddassar hameed, Abdul wahaab, mohsin nawaz, sawar khan, Jawad Nazir, liu ke, jianchao wei, Zhiyong Ma

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: Japanese encephalitis virus; birds; genotype shift; JEV genotype I; JEV genotype III

Online: 26 January 2021 (16:47:47 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202109.0021.v1

Revisiting Statistics and Evidence-Based Medicine: On the Fallacy of the Effect Size Based on Correlation and Misconception of Contingency Tables

Sergey Roussakow

Subject: Computer Science And Mathematics, Probability And Statistics Keywords: Effect size; correlation coefficient; association measure; covariance; mean square contingency coefficient; mean square effect half-size; Pearson’s Phi; 2 × 2 table; binary crosstab; gross crosstab; contingency table

Online: 1 September 2021 (14:28:47 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202403.0679.v1

Predicting and Analyzing Rainfall Patterns in Ethiopia Using Linear Regression Modeling

Moges Tsegaw Melesse, Gezahegn Mulusew Delele

Subject: Computer Science And Mathematics, Computer Science Keywords: Rainfall patterns; Ethiopia; Linear regression modeling; R-squared score; Mean squared error

Online: 14 March 2024 (05:28:48 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202401.1835.v1

Effect of the root parameter on the stability of the Non-stationary D/M/1 queue’s GI/M/1 model with PSFFA applications to the Internet of Things (IoT)

Dr Ismail A Mageed

Subject: Computer Science And Mathematics, Probability And Statistics Keywords: State variable; mean arrival rate; time; time dependent root parameter; PSFFA; IoT

Online: 26 January 2024 (02:00:55 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202311.0135.v1

Prodiagnostic Power of Delta Neutrophil Index and Mean Platelet Component in the Sepsis-Suspected Febrile Patients

Taehun Lee, Jongwook Lee, Dong Hoon Shin, Hyungdon LEE, Soo-ki Kim

Subject: Medicine And Pharmacology, Epidemiology And Infectious Diseases Keywords: Delta neutrophil index; Sepsis; mean platelet component; Procalcitonin; CRP; Emergency department; fever

Online: 2 November 2023 (08:42:03 CET)

Show abstract| Download PDF| Share

Background The Delta Neutrophil Index (DNI), a prodiagnostic marker for sepsis, utilizes leukocyte count. Platelet activation, similar to leukocytes, plays a crucial role in host defence against pathogens and may serve as a predictor of sepsis outcome. However, the combined evaluation of Mean Platelet Component (MPC) and DNI in assessing sepsis has been rarely used. Methods To assess the prodiagnostic validity of simultaneous utilization of DNI and MPC in cases of human febrile sepsis, we conducted measurements of cellular indices, including DNI and MPC, as well as molecular biomarkers such as procalcitonin (PCT) and C-reactive protein (CRP). This study was carried out on patients admitted to the emergency department with suspected sepsis. Results Using a cutoff value of 2.65%, the sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of DNI in sepsis were found to be 69%, 73.9%, 77.9%, and 64.1%, respectively. Furthermore, significant differences in DNI and MPC levels were observed between the sepsis and non-sepsis groups (6.7±7.8% versus 2.1±2.2%, P=0.000 and 26.0±1.9 g/dl versus 26.8±1.4 g/dl, P=0.002), respectively. Notably, there was a negative correlation between DNI and MPC, with the strength of the correlation varying based on the cause of sepsis. By setting the cutoff value for DNI at 6.2%, the sensitivity, specificity, and NPV improved to 100%, 80.3%, and 100%, respectively, although the PPV remained at 10.6%. Importantly, the DNI≥6.2 group exhibited a higher incidence of death (10.9%, 5/46) and multiorgan failure (19.6%, 9/46) compared to the DNI<6.2 group (0.0%, 0/46 and 0.0%, 0/167, respectively) (P=0.000 and P=0.000, respectively). Conclusions In our study, DNI demonstrates superior effectiveness compared to other molecular biomarkers such as CRP and procalcitonin in distinguishing febrile septic patients from febrile nonseptic patients and predicting prognosis. Additionally, there exists a negative correlation between MPC and DNI, making MPC a valuable marker for differentiating the etiology of sepsis. These findings hold significant clinical implications as DNI/MPC is a cost-effective and readily applicable approach in various impending sepsis scenarios. Notably, this study represents the first examination of the prodiagnostic validity of simultaneously employing DNI and MPC in human cases of febrile sepsis.

Preprint ARTICLE | doi:10.20944/preprints202306.1672.v1

Application of Recommendation System on E-Learning Platform Using Content-Based Filtering with Jaccard Similarity and Cosine Similarity Algorithms

Yohanes Leonardus Sukestiyarno, Hasballah Askar Sapolo, Hizir Sofyan

Subject: Computer Science And Mathematics, Probability And Statistics Keywords: Recommendation System, Content-Based Filtering, Jaccard Similarity, Cosine Similarity, Mean Absolute Error

Online: 23 June 2023 (11:59:37 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202212.0291.v1

Interplay of Hydropathy and Heterogeneous Diffusion in the Molecular Transport Within Lamellar Lipid Mesophases

Antonio M. Bosch, Salvatore Assenza

Subject: Medicine And Pharmacology, Medicine And Pharmacology Keywords: Brownian dynamics; effective diffusion; potential of mean force; partition coefficient; release setups

Online: 16 December 2022 (02:55:23 CET)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints201909.0228.v1

Behavior of Floquet Topological Quantum States in Optically Driven Semiconductors

Andreas Lubatsch, Regine Frank

Subject: Physical Sciences, Condensed Matter Physics Keywords: topological insulators; Floquet states; Dynamical Mean Field Theory; semiconductors; strongly correlated electronics

Online: 19 September 2019 (15:46:56 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201805.0296.v1

Some Normal Intuitionistic Fuzzy Heronian Mean Operators Using Hamacher Operation and Their Application

Guofang Zhang, Zhiming Zhang, Hang Kong

Subject: Computer Science And Mathematics, Computer Science Keywords: normal intuitionistic fuzzy numbers; Heronian mean; Hamacher t-conorm; Hamacher t-norm

Online: 22 May 2018 (10:15:21 CEST)

Show abstract| Download PDF| Share

Hamacher operation which is generalization of the Algebraic and Einstein operation, can widely provide a large number of arithmetical operation with respect to uncertainty information, and Heronian mean can deal with correlations of the input arguments or different criteria and don’t make calculation redundancy, meanwhile, the normal intuitionistic fuzzy numbers (NIFNs) can depict distinctively normal distribution information in practical decision making. In this paper, a multi-criteria group decision-making (MCGDM) problem is researched under the NIFNs environment, and a new MCGDM approach is introduced on the basis of the Hamacher operation. Firstly, according to Hamacher t-conorm and t-norm, some operational laws of NIFNs are presented. Secondly, it is noticed that Heronian mean can’t only once take into account mutual relation between attribute values once, but also consider the correlation between input argument and itself. Therefore, we develop some operators and study their properties in order to aggregate normal intuitionistic fuzzy numbers information, these operators include Hamacher Heronian mean (NIFHHM), Hamacher weighted Heronian mean (NIFHWHM), Hamacher geometric Heronian mean (NIFHGHM) and Hamacher weighted geometric Heronian mean (NIFHWGHM). Furthermore, we apply the proposed operators to the MCGDM problem and present a new method. The main characteristics of this new method involve that: (1) it is suitable to make decision under the normal intuitionistic fuzzy numbers environment and more reliable and reasonable to aggregate the normal distribution information. (2) it utilizes Hamacher operation which can provide more reliable and flexible decision-making results and offer an effective and powerful mathematic tool for the MAGDM under uncertainty. (3) it uses the Heronian mean operator which can considers relationships between the input arguments or the attributes and don’t brings subsequently about redundancy. Lastly, an application is given for showing the feasibility and effectiveness of the presented method in this paper.

Preprint ARTICLE | doi:10.20944/preprints201709.0084.v1

Passive Sonar Target Detection Using Statistical Classifier and Adaptive Threshold

Hamed Komari Alaie, Hassan Farsi

Subject: Engineering, Control And Systems Engineering Keywords: Passive Sonar; Target Detection; Adaptive Threshold; Bayesian Classifier; K-Mean; Particle Filter

Online: 18 September 2017 (17:04:13 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202307.1363.v1

Theoretical Analysis for Improving the Efficiency Of HT-PEMFC through Unreacted Hydrogen Circulation

Sanghyoun Park, Sangyong Lee

Subject: Engineering, Energy And Fuel Technology Keywords: Fuel processor; Steam reformer; Residential HT-PEMFC; Fuel cell; Water gas shift reactor

Online: 20 July 2023 (02:47:13 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201810.0424.v1

Zeros and Value Sharing Results for q-Shifts Difference and Differential Polynomials

Rajshree Dhar

Subject: Computer Science And Mathematics, Analysis Keywords: Entire and Meromorphic function; q-shift; q-difference polynomial; shared values; Nevanlinna theory

Online: 18 October 2018 (12:20:26 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201703.0119.v1

Lévy–Khintchine Representation of Toader–Qi Mean

Feng Qi, Bai-Ni Guo

Subject: Computer Science And Mathematics, Analysis Keywords: Lévy–Khintchine representation; integral representation; Bernstein function; Stieltjes function; Toader–Qi mean; weighted geometric mean; Bessel function of the first kind; probabilistic interpretation; probabilistic interpretation; application in engineering; inequality

Online: 16 March 2017 (11:31:31 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202401.1405.v1

Enhancements of Wave Power Absorption with Arrays and a Vertical Breakwater

Fuat Kara

Subject: Engineering, Energy And Fuel Technology Keywords: mean interaction factor; absorbed wave power; multibody interaction; WECs arrays; method of images

Online: 18 January 2024 (13:55:36 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202310.2101.v1

Haytham M. Rezk, Juan E. Nápoles Valdés, Maha Ali, A. I. Saied, Mohammed Zakarya

Subject: Computer Science And Mathematics, Applied Mathematics Keywords: Hilbert-type inequalities, Hölder’s inequality, Mean inequality, kernels, delta integrals, 7 time scales

Online: 31 October 2023 (15:03:38 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202306.0410.v1

Statistical Modeling for Fatigue Life

D. Gary Harlow

Subject: Engineering, Safety, Risk, Reliability And Quality Keywords: fatigue life; mean square error; statistical modeling; stress – life modeling; Weibull distribution function

Online: 6 June 2023 (08:14:05 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202305.1711.v1

Multiscale Modelling of Milk Proteins Adsorption on Metallic Iron Surfaces

Parinaz Mosaddeghi Amini, Julia Subbotina, Vladimir Lobaskin

Subject: Chemistry And Materials Science, Biomaterials Keywords: nanoparticle; potential of mean force; protein adsorption; proteins corona; bionano interface; multiscale modelling

Online: 24 May 2023 (12:57:21 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202305.1154.v1

Response of Soil Aggregate Stability to Phosphorus, Nitrogen and Organic Fertilizer Addition: A Meta-analysis

Xiaolan Liu, Jigen Liu, Jinquan Huang, Yanfei Chen, Lu Zhang, Yujie Qi, Weiwen Li, Yi Zhu

Subject: Environmental And Earth Sciences, Soil Science Keywords: Phosphorus fertilizer; Nitrogen fertilizer; Organic fertilizer; Mean weight diameter; Meta-analysis; PLS-SEM

Online: 16 May 2023 (10:42:07 CEST)

Show abstract| Download PDF| Share

Soil is an extremely significant resource for human survival, and agglomerates, as the basic unit of soil structure, not only enhance soil fertility and control the biological validity of nutrients, but also strengthen the soil's erosion resistance. The mass application of fertilizers may have a significant impact on crop growth and soil structure, and the rational application and dispensing of fertilizers will be an urgent issue to be addressed. Therefore, the effect of fertilizer application on the stability of water-stable soil aggregates needs to be studied under different meteorological and soil conditions to draw more general and feasible conclusions. Our Meta-analysis of data from 220 of 56 published studies found that fertilizer application increased mean weight diameter (MWD) by an average of 18% compared to the no-fertilizer treatment. Among the nitrogen (N), phosphate (P), and organic (OM) fertilizer treatments, the organic fertilizer treatment had a greater stimulatory effect on MWD (26%). Among the different fertilizer levels, low level of phosphorus (<40kg·hm-2·yr-1), high level of N (>120kg·hm-2·yr-1), and low level of organic fertilizer (<5000kg·hm-2·yr-1) increased MWD by 19%, 14%, and 41% respectively. Across soil types and land use types, the response to MWD was positive for red soils and paddy fields, and the stimulatory effect of organic fertilizer was more significant compared to chemical fertilizer. The regression model showed that the response ratio of MWD was negatively correlated with the response ratio of soil pH and bulk density (BD), and positively correlated with the response ratio of soil organic carbon (SOC) and microbial mass carbon (MBC). Meanwhile, the PLS-SEM model showed that average annual temperature was the main factor affecting the stability of soil aggregates, and the average annual rainfall is the secondary factor. Therefore, this study found that the long-term use of organic fertilizers in place of some chemical fertilizers was more effective than chemical fertilizer alone. Temperature and rainfall have greater effects on the response of fertilizer to soil aggregate stability.

Preprint ARTICLE | doi:10.20944/preprints202304.0850.v1

Analysis Driving Factors of Energy Consumption in the Road Transport Sector of the City in Douala, Cameroon

Fontaine Dubois Bissai, Bienvenu Gael Fouda Mbanga, Cyrille Adiang Mezoue, Severin Nguiya

Subject: Engineering, Energy And Fuel Technology Keywords: decomposition analysis; driving factors; energy consumption; logarithmic -mean divisa Index method; road transport

Online: 24 April 2023 (10:47:31 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202208.0234.v1

Variational Bayesian Approximation (VBA): A comparison between three optimization algorithms

Seyedeh Azadeh Fallah Mortezanejad, Ali Mohammad-Djafari

Subject: Computer Science And Mathematics, Probability And Statistics Keywords: Variational Bayesian Approach (VBA); Kullback–Leibler Divergence; Mean Field Approximation (MFA); Optimization Algorithm

Online: 12 August 2022 (10:26:02 CEST)

Show abstract| Download PDF| Share

Working Paper ARTICLE

A Linear Process Approach to Short-term Trading Using the VIX Index as a Sentiment Indicator

Yawo Mamoua Kobara, Cemre Pehlivanoglu, Okechukwu Joshua Okigbo

Subject: Business, Economics And Management, Accounting And Taxation Keywords: Short-term trading; mean reversion; VIX; SPY; linear stochastic process; MACD; Bollinger Bands

Online: 29 July 2021 (16:24:34 CEST)

Show abstract| Download PDF| Share

Search Results

193 articles found