A fast least-square deconvolution algorithm for vocal tract cross section estimation

1990 ◽  
Vol 38 (6) ◽  
pp. 921-924 ◽  
Author(s):  
Y.H. Hu ◽  
P.L. Milenkovic
Keyword(s):  
Cross Section ◽  
Vocal Tract ◽  
Least Square ◽  
Deconvolution Algorithm

scholarly journals Import Flows of Bangladesh: Gravity Model Approach under Panel Data Methodology

2012 ◽  
Vol 60 (2) ◽  
pp. 153-157 ◽  
Author(s):  
Mili Roy ◽  
Md. Israt Rayhan
Keyword(s):  
Panel Data ◽  
Gravity Model ◽  
Cross Section ◽  
Time Series Data ◽  
Random Effect ◽  
Least Square ◽  
Series Data ◽  
Ordinary Least Square ◽  
Extended Gravity ◽  
Trading Partners

In counterpoint to export growth, Bangladesh import growth has remained much less strong, despite impressive progress in import liberalization. This study gives an overview of different methodologies related to gravity model analysis in Bangladesh’s import flow. A pooled cross section and time series data were analyzed to incorporate the country specific heterogeneity in country pair trading partners. The import flows are justified by the basic gravity model since Bangladesh’s imports are positively significant by the economy size and inversely related to trade barrier. Accordingly, we have analyzed pooled ordinary least square, fixed effect, random effect. This study also explores extended gravity model using several variables in the light of gravity model panel data approach. Bangladesh’s import is determined by the home and foreign country’s gross domestic product and exchange rate. In addition, Cross section results show that regional trade arrangement which is South Asian Association for Regional Co-operation and border are significant for Bangladesh’s importimplies that Bangladesh should import more from intra regional country and also should import from India.DOI: http://dx.doi.org/10.3329/dujs.v60i2.11485 Dhaka Univ. J. Sci. 60(2): 153-157, 2012 (July)  

scholarly journals Panel FMOLS Model Analysis of the Effects of Livestock Support Policies on Sustainable Animal Presence in Turkey

2020 ◽  
Vol 12 (8) ◽  
pp. 3444
Author(s):  
Hilmi Erdal ◽  
Gülistan Erdal
Keyword(s):  
Cross Section ◽  
Educational Level ◽  
Least Square ◽  
The Other ◽  
Utilization Rate ◽  
Ordinary Least Square ◽  
Agricultural Income ◽  
Time Period ◽  
Presence Data ◽  
Animal Presence

This paper studied the effects of livestock support policies applied in Turkey. The effects of the support policies were built upon the change in the cattle presence data. Full Modified Ordinary Least Square (FMOLS) model was used in the analysis. In the panel dataset which was created for the study, the time period was taken as the years between 2004 and 2014 and the cross-section was 26 sub-regions. The results of panel FMOLS test for both the total livestock supports and each support component presents important details. According to the results of the analyses, a 1.0% increase in livestock supports leads to a 0.3% increase in animal presence in Turkey. On the other hand, it is stated that the utilization rate of the support payments is high in the western regions, whereas it is comparatively low in the eastern and interior regions in Turkey although the appliance of the policies is carried out in the same way, since animal presence in western regions in terms of fertile races is higher. This situation reveals the importance of breeders of high conscience, educational level, and agricultural income besides organized associations and provincial organizations.

Computation of Exterior Acoustics Problems in Two Dimensions by Trefftz-Type Finite Elements

2015 ◽  
Vol 712 ◽  
pp. 17-22
Author(s):  
Małgorzata Stojek
Keyword(s):  
Finite Elements ◽  
Cross Section ◽  
Radiation Condition ◽  
Two Dimensions ◽  
Least Square ◽  
Fe Method ◽  
Complete Set ◽  
Least Square Procedure

The paper deals with the application of the so-called T-type finite elements [1] to the calculation of the exterior acoustic problems in two dimensions. The method is based on the use of asuitably truncated T-complete set of Trefftz functions over individual subdomains linked by means ofa least square procedure. The vertex singularities and the Sommerfeld radiation condition are readilyincorporated in the trial functions. In order to show the performance of the approach two examples ofcomputations for infinite cylinders (of circular and square cross section) are presented and comparedwith those obtained by means of h-adaptive FE method [2].

Aeroelastic vibration analysis of wind turbine blade with Gurney flap

2020 ◽  
pp. 095440622097788
Author(s):  
Lin Chang ◽  
Yingjie Yu ◽  
Tingrui Liu
Keyword(s):  
Cross Section ◽  
Vibration Analysis ◽  
Natural Frequencies ◽  
Parametric Design ◽  
Trust Region ◽  
Aerodynamic Performance ◽  
Least Square ◽  
Equivalent Model ◽  
Beam Model ◽  
Gurney Flap

In this paper, based on the parametric design of 3 D blades including typical cross-section and natural frequency calculation of the equivalent model, an integral method for aerodynamic performance and aeroelastic vibration analysis of blade with Gurney flap is proposed. Parametric design and unstructured grid are used to pre-process the blades with/without the Gurney flap. The discrete aerodynamic performance parameters distribution including the lift, drag, and torsion coefficients calculated by Fluent is fitted by the nonlinear least square method based on the trust-region algorithm, and the natural frequencies of the rotating blade are accurately solved by the equivalent thin-walled beam model and Green’s functions. Based on the aerodynamic performance coefficients and natural frequencies obtained by the accurate calculation above, the aeroelastic response equation of typical cross-section considering local aerodynamic damping matrix is established, and the vibration response of blade in flap and torsion direction is further described. From the analysis results, it can be seen that the Gurney flap structure can not only bring higher lift performance to the blade, but also can reduce the amplitude and vibration range of aeroelastic vibration, improve the aeroelastic stability of the blade, and prove the effectiveness of Gurney flap.

Energy Saving in Mine Ventilation Roadway and its Optimization Model Solving

2013 ◽  
Vol 868 ◽  
pp. 291-295
Author(s):  
Jie Liu ◽  
Peng Yang ◽  
Wen Sheng Lv
Keyword(s):  
Mathematical Model ◽  
Cross Section ◽  
Least Square Method ◽  
Mine Ventilation ◽  
Least Square ◽  
Construction Costs ◽  
Maintenance Costs ◽  
Capital Construction ◽  
The Relationship ◽  
Power Costs

The paper is aimed at introducing our research of mathematical modelling of mine ventilation roadway optimal cross-section and its solving method. As we know, a rational cross-section should be determined to satisfy each intake and return airflow roadway based on the analysis of the relationship between ventilation cross-section and capital construction costs, in addition to maintenance costs and ventilation power costs. Reasonable selection of ventilation roadway cross-section is important to economic. The least square method is reasonable to build mathematical model for ventilation roadway costs. On the basis of previous studies, the relationship of capital construction costs and maintenance costs were further analyzed. Finally, considering the capital construction, maintenance and ventilation power costs three costs, the mathematical model was more accurate. Through researching a single ventilation roadway costs variation with the size of cross-section, cross-section size determined by considering time variable of costs was optimal, and built by this size could reduce economic investment. Hereby, it provides a solving method for the whole process of ventilation networks roadway cross-section optimization.

Do remittance and renewable energy affect CO2 emissions? An empirical evidence from selected G-20 countries

2021 ◽  
pp. 0958305X2110296
Author(s):  
Khalid Jamil ◽  
Dunnan Liu ◽  
Rana Faizan Gul ◽  
Zahid Hussain ◽  
Muhammad Mohsin ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Financial Development ◽  
Cross Section ◽  
Trade Openness ◽  
Negative Relationship ◽  
Panel Cointegration ◽  
Least Square ◽  
Annual Data ◽  
Renewable Energy Resources ◽  
Ordinary Least Square

The study aims to compare CO2 emissions, renewable energy, trade openness, gross domestic product (GDP), financial development (FD), and remittance in selected G-20 countries. The study carried out fully modified ordinary least square (FMOLS) and dynamic ordinary least square (DOLS) models for estimation covering annual data from the year 1990–2019. LM tests detected the cross-section dependency while stationarity of the variables was checked through Levin-Lin-Chu and Im-Pesaran-Shin tests along with Hansen's Covariate-Augmented Dickey Fuller (CADF) test in the presence of cross-section dependency. The panel unit root tests reported that all variables became stationary after converting them into the first difference. The Panel Cointegration and Wester-Lund test examined the existence of long-run equilibrium nexus among selected variables in the context of G-20 countries. The study's findings show that there is a significant and negative relationship between renewable energy and CO2 emissions. It was proven in two models that the economic growth of selected G-20 countries has a positive relationship with CO2 emissions. Furthermore, findings indicate that the coefficient of financial development is positive and significantly impacts CO2 emissions. The remittances have a significant positive effect on CO2 emissions, while trade openness has an insignificant impact on CO2 emissions in both models. This research will enlighten policymakers, researchers, governments, and environmentalists toward attaining a sustainable environment by wisely consuming remittances and renewable energy resources.

FAKTOR-FAKTOR YANG MEMPENGARUHI EFEKTIVITAS DANA DESA

2018 ◽  
Vol 9 (1) ◽  
pp. 55-66
Author(s):  
Chenny Seftarita ◽  
Fakhruddin Fakhruddin ◽  
Litbang Bappeda
Keyword(s):  
Cross Section ◽  
Random Sampling ◽  
Economic Benefits ◽  
Least Square ◽  
Capital Adequacy ◽  
Cross Section Data ◽  
Ordinary Least Square ◽  
Section Data ◽  
Net Interest Margin ◽  
Capital Adequacy Ratio

Penelitian ini bertujuan mengetahui faktor-faktor yang memengaruhi efektivitas dana desa. Data dalam penelitian ini merupakan data cross section (data satu waktu) tahun 2017. Penelitian ini menggunakan data primer dan sekunder dengan metode pengambilan sampelnya dengan area sampling dan stratified random sampling. Peralatan analisis yang digunakan adalah ordinary least square. Berdasarkan hasil penelitian yang dilakukan, pertama persepsi aparat gampong menunjukkan badan usaha milik desa dan manfaat ekonomi lainnya, manfaat dana desa, sisa lebih perhitungan anggaran dan strategi berpengaruh positif dan signifikan terhadap efektivitas dana desa sedangkan tata kelola tidak memiliki pengaruh terhadap efektivitas dana desa. Kedua, persepsi masyarakat menunjukkan badan usaha milik desa dan manfaat ekonomi lainnya, manfaat dana desa, sisa lebih perhitungan anggaran dan strategi tidak berpengaruh terhadap efektivitas dana desa sedangkan tata kelola memiliki pengaruh dan signifikan terhadap efektivitas dana desa.AbstractThis study aims to determine the factors that influence the effectiveness of village funds. The data in this study are cross section data (one time data) in 2017. This study uses primary and secondary data with the sampling method with the sampling area and stratified random sampling. The analytical tool used is ordinary least square. Based on the results of the research conducted, the first perception of village officials showed village-owned enterprises and other economic benefits, benefits of village funds, the remaining more budget and strategy calculations had a positive and significant effect on the effectiveness of village funds while governance had no influence on the effectiveness of village funds. Second, community perceptions show village-owned enterprises and other economic benefits, benefits of village funds, the remaining more budget calculations and strategies have no effect on the effectiveness of village funds while governance has an influence and significance on the effectiveness of village funds. Keywords: capital adequacy ratio, net interest margin, profitabilityKey words: capital adequacy ratio, net interest margin, profitability.

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