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Online since: September 2015
Authors: Tadeusz Cisowski, Łukasz Wojciechowski
Modeling Of Economic Forecasting Of Manufacturing Processes In Transport Services Market
WOJCECHOWSKI Łukasz1,a*,CISOWSKI Tadeusz2,b
1Institute of Technological Systems of Information, Lublin University of Technology, Nadbystrzycka
Street 36, 20-618 Lublin, Poland
2Department of Logistics, Polish Air Force Academy, Dywizjonu 303 Street 35, 08-521 Dęblin
al.wojciechowski@pollub.pl, btadeuszc@poczta.onet.pl
Keywords: manufacturing systems, transport, logistics, technological systems.
Let us determine statistical factors which affect the forecast (all the factors are vectors defined by a moment of time in a retrospective period): El(Y) are social and economic indicators of the region Y, l∈L; El are social and economic indicators on macro level; Pk(xi,yj) is the k-th type transport between xi and yj, k∈K; Rk(xi,yj) is an indicator for the k-th type transport provided by an alternative (rival) mode of transportation; Ck(xi,yj) denotes the dynamics of a tariff policy of rail transport and a rival (alternative) mode of transportation; Ok(xi,yj) are rail transport capacities for the k-th type transport from xi to yj; Sk(xi,yj) are the capacities of rival (alternative) modes of transportation for the k-th type transport.
The forecast for the k-th type transport for a period T can be expressed as the functional: PkTxi,yj=F(El, ElY, Pkxi,yj, Rkxi,yj, Ckxi,yj, Okxi,yj, Skxi,yj) (1) Functional (1) presents a generalized relationship between the predicted volume and the statistical retrospective data.
Based on the correlation relationships between transport of the type Rk and the social and economic indicators of the region El, we determine L⊆L, i.e. ratios with a ”high” degree of correlation r(Rk,El) where r(Rk,El)>rmin , for all l∈L where rmin is based on expert evaluation.
Let us determine statistical factors which affect the forecast (all the factors are vectors defined by a moment of time in a retrospective period): El(Y) are social and economic indicators of the region Y, l∈L; El are social and economic indicators on macro level; Pk(xi,yj) is the k-th type transport between xi and yj, k∈K; Rk(xi,yj) is an indicator for the k-th type transport provided by an alternative (rival) mode of transportation; Ck(xi,yj) denotes the dynamics of a tariff policy of rail transport and a rival (alternative) mode of transportation; Ok(xi,yj) are rail transport capacities for the k-th type transport from xi to yj; Sk(xi,yj) are the capacities of rival (alternative) modes of transportation for the k-th type transport.
The forecast for the k-th type transport for a period T can be expressed as the functional: PkTxi,yj=F(El, ElY, Pkxi,yj, Rkxi,yj, Ckxi,yj, Okxi,yj, Skxi,yj) (1) Functional (1) presents a generalized relationship between the predicted volume and the statistical retrospective data.
Based on the correlation relationships between transport of the type Rk and the social and economic indicators of the region El, we determine L⊆L, i.e. ratios with a ”high” degree of correlation r(Rk,El) where r(Rk,El)>rmin , for all l∈L where rmin is based on expert evaluation.
Online since: March 2025
Authors: B Pradeep, S. Joe Patrick Gnanaraj, Vanthana Jeyasingh
El-Sebaii et al. [16] showed various passive solar distillation systems and found that enhancements like improved insulation and reflective surfaces could substantially increase efficiency.
By maintaining a consistent heat supply, El-Agouz et al. [37] achieved notable improvements in stepped solar still distillate production.
El-Sebaii, S.
El-Agouz, A.E.
[40] Obai Younis, Ahmed Kadhim Hussein, Mohammed El Hadi Attia, Hakim S.
By maintaining a consistent heat supply, El-Agouz et al. [37] achieved notable improvements in stepped solar still distillate production.
El-Sebaii, S.
El-Agouz, A.E.
[40] Obai Younis, Ahmed Kadhim Hussein, Mohammed El Hadi Attia, Hakim S.
Online since: December 2010
Authors: Feng Sun, Ai Dang Shan, Lan Ting Zhang, Rong Chun Wan
The main way to reduce Mo content of fire-resistant steel is that by adding multiple of alloy elements (Cu, Nb, V, Ni, Ti, Al, B, RE, and so on).
Journal of Constructional Steel Research, Vol. 50 (1999) p.223-233 [2] LinHai Han, XiaoLing Zhao, M.ASCE.et.al.
Structural Engineers, (2002) p. 11-16 [5] Hiroshi Fujino, Kiyoshi Hitomi, Junji hashimoto, at.el.
Kamat, at.el.
Kamat, at.el.
Journal of Constructional Steel Research, Vol. 50 (1999) p.223-233 [2] LinHai Han, XiaoLing Zhao, M.ASCE.et.al.
Structural Engineers, (2002) p. 11-16 [5] Hiroshi Fujino, Kiyoshi Hitomi, Junji hashimoto, at.el.
Kamat, at.el.
Kamat, at.el.
Online since: February 2008
Authors: Zhi Li Zhang, Shi Bo Li, Hong Xiang Zhai, Yang Zhou, Cui Wei Li
Studies[5,6] improved that addition of Al to the raw materials
might enhance the purity of the Ti3SiC2 through forming solid solutions.
Zhu[5] and Zhou[6] reported that 10at% Al could substitute Si to form Ti3Si0.9Al0.1C2 solid solution with improved oxidation resistance.
The purpose of this paper is to report on the processing parameters for synthesizing predominantly single phase Ti3Si0.4Al0.8C1.8 solid solution from Ti-Si-Al-C powder mixture.
El-Raghy: Met.
El-Raghy: Met.
Zhu[5] and Zhou[6] reported that 10at% Al could substitute Si to form Ti3Si0.9Al0.1C2 solid solution with improved oxidation resistance.
The purpose of this paper is to report on the processing parameters for synthesizing predominantly single phase Ti3Si0.4Al0.8C1.8 solid solution from Ti-Si-Al-C powder mixture.
El-Raghy: Met.
El-Raghy: Met.
Online since: September 2013
Authors: Ren Fen Hu, Yun Zhu, Yao Hong Jin, Jia Yong Chen
Huang et al. discussed the reordering function of these prepositions, and defined them as Logic-0 (L0) concepts [3][4].
We give 2 simple English sentences to explain the 2 types, EG and EL.
Sentence 5 A secret told(EL) by Bob is spreading(EG).
L0 word in level 1 is in combination with EG, while L0 word in level 2 is in combination with EL.
In this NP, YU is identified as L0 in LEVEL[2], and fit is EL in combination with L0.
We give 2 simple English sentences to explain the 2 types, EG and EL.
Sentence 5 A secret told(EL) by Bob is spreading(EG).
L0 word in level 1 is in combination with EG, while L0 word in level 2 is in combination with EL.
In this NP, YU is identified as L0 in LEVEL[2], and fit is EL in combination with L0.
Online since: August 2015
Authors: Samraj Ravi, T.V. Moorthy, R. Ravi Raja Malarvannan
Another tool coated with TiAlN (Ti 55%, Al 35%) composition.
Fig. 3 (b) shows the EDS of TiAlN (Ti 70%, Al 25%) coated cutting tool.
TIAlN (Ti 70%, Al 25%) coated tool having hardness value 1258VH.
[5] T.M.EL-Hossainv, A.
El-Zoghby, M.
Fig. 3 (b) shows the EDS of TiAlN (Ti 70%, Al 25%) coated cutting tool.
TIAlN (Ti 70%, Al 25%) coated tool having hardness value 1258VH.
[5] T.M.EL-Hossainv, A.
El-Zoghby, M.
Online since: February 2011
Authors: Refat El-Sheikhy, Mosleh Al-Shamrani
Fe-Base Metallic Glass Coating Produced by Gas Tunnel Type Plasma Spraying
Size Effect on Volume-Shape Change of Both Micro and Nano Aluminum-Silicate Minerals
Refat El-Sheikhy*, Mosleh Al-Shamrani**
*, ** Professors, Civil Engineering Dept, College of Engineering,
Bughshan Research Chair, King Saud University, P.
Fig. (2 a) Agglomerated Nano Si-Al: powder Fig. (2 b) Agglomerated Nano Si-Al: f Fig. 3 XRD Pattern for nano Smectite Si-Al powder.
Sheng, et. al., polymer 45, 487-506, (2004)
Zhang, et. al. , Polymer 49, 3816-3825, (2008)
[5] L. cui, et. al, Polymer 49, 3762-3769, (2008).
Fig. (2 a) Agglomerated Nano Si-Al: powder Fig. (2 b) Agglomerated Nano Si-Al: f Fig. 3 XRD Pattern for nano Smectite Si-Al powder.
Sheng, et. al., polymer 45, 487-506, (2004)
Zhang, et. al. , Polymer 49, 3816-3825, (2008)
[5] L. cui, et. al, Polymer 49, 3762-3769, (2008).
Online since: November 2025
Authors: Ayoub El Jaouhari, Morad El Kaouini, Abdelhak Missaoui, Majid Rochdi
[2] ALEXEFF, Igor, ANDERSON, Ted, FARSHI, Esmaeil, et al.
[6] WANG, Hailu, LYU, Xingbao, YAO, Jingfeng, et al.
Ashraful, ISLAM, Mazidul, et al.
[14] WANG, Ying, YUAN, Chengxun, ZHOU, Zhongxiang, et al.
[16] EL JAOUHARI, Ayoub, ROCHDI, Majid, EL KAOUINI, Morad, et al.
[6] WANG, Hailu, LYU, Xingbao, YAO, Jingfeng, et al.
Ashraful, ISLAM, Mazidul, et al.
[14] WANG, Ying, YUAN, Chengxun, ZHOU, Zhongxiang, et al.
[16] EL JAOUHARI, Ayoub, ROCHDI, Majid, EL KAOUINI, Morad, et al.
Online since: October 2011
Authors: Emad A. Badawi, M.A. Abdel-Rahman, Yahia A. Lotfy, N.A. Kamel, Abdullah A. Refeay
Effect of Ageing on Microstructures, Electrical
Properties and PALS of Aircraft Al Alloy 2024
Abdullah A.Refeay, N.A.Kamel, M.A.Abdel-Rahman,
Y.A.Lotfy and Emad A.
The detected positron lifetimes, corresponding to trapping to precipitations, are significantly above the bulk lifetime of the undisturbed Al matrix.
Since this is valid for pure Al-Cu alloys as well, vacancy like defects in the precipitations seems to be responsible for the detected positron lifetime.
Abd El-Azimc: Materials and Design, 23 (2002) 153-159 [4] N.
Abd El-Azi: Materials & Design, 23[2] (2002) 153-159 [5] M.
The detected positron lifetimes, corresponding to trapping to precipitations, are significantly above the bulk lifetime of the undisturbed Al matrix.
Since this is valid for pure Al-Cu alloys as well, vacancy like defects in the precipitations seems to be responsible for the detected positron lifetime.
Abd El-Azimc: Materials and Design, 23 (2002) 153-159 [4] N.
Abd El-Azi: Materials & Design, 23[2] (2002) 153-159 [5] M.