August & September  2019, 12(4&5): 1147-1166. doi: 10.3934/dcdss.2019079

The heterogeneous fleet location routing problem with simultaneous pickup and delivery and overloads

School of Business Administration, Jiangxi University of Finance and Economics, Nanchang 30013, China

* Corresponding author: Xuefeng Wang

Received  June 2017 Revised  December 2017 Published  November 2018

This paper addresses a new variant of the location routing problem (LRP), namely the heterogeneous fleet LRP with simultaneous pickup and delivery and overloads (HFLRPSPDO) which has not been previously tackled in literatures. In this problem, the heterogeneous fleet is comprised of vehicles with different capacities, and the vehicle overloads up to a specified upper bound is allowed. This paper proposes a polynomial-size mixed integer linear programming formulation for the problem in which a penalty function, allowing capacity violations of vehicles, is integrated into objective function. Furthermore, two heuristic algorithms, respectively based on tabu search and simulated annealing, are proposed to solve HFLRPSPDO. Computational results on simulated instances show the effectiveness of the proposed problem formulation and the efficiency of the proposed heuristic algorithms.

Citation: Xuefeng Wang. The heterogeneous fleet location routing problem with simultaneous pickup and delivery and overloads. Discrete & Continuous Dynamical Systems - S, 2019, 12 (4&5) : 1147-1166. doi: 10.3934/dcdss.2019079
References:
[1]

D. Ambrosinoa, Distribution network design: New problems and related models, European Journal of Operational Research, 165 (2005), 610-624.  doi: 10.1016/j.ejor.2003.04.009.  Google Scholar

[2]

R. T. BergerC. R. Coullard and M. S. Daskin, Location-routing problems with distance constraints, Transportation Science, 41 (2007), 29-43.   Google Scholar

[3]

T. W. Chien, Heuristic procedures for practical-sized uncapacitated location-capacitated routing problems, Decision Sciences, 24 (1993), 995-1021.   Google Scholar

[4]

C. H. Chu and J. Hopscotch, Further discussion for transit system of chicago, Journal of Discrete Mathematical Sciences & Cryptography, 20 (2017), 717-724.  doi: 10.1080/09720529.2016.1197600.  Google Scholar

[5]

G. Clarke and J. W. Wright, Scheduling of vehicles from a central depot to a number of delivery points, Operations Research, 12 (1964), 568-581.   Google Scholar

[6]

J. Dethloff, Vehicle routing and reverse logistics: The vehicle routing problem with simultaneous delivery and pick-up, OR-Spektrum, 23 (2001), 79-96.  doi: 10.1007/PL00013346.  Google Scholar

[7]

J. Geunes and B. M. Chang, Operations Research Models for Supply Chain Management and Design, vol. 76, Springer US, 1994. Google Scholar

[8]

B. GoldenA. AssadL. Levy and F. Gheysens, The fleet size and mix vehicle routing problem, Computers & Operations Research, 11 (1984), 49-66.   Google Scholar

[9]

G. IoannouM. Kritikos and G. Prastacos, A greedy look-ahead heuristic for the vehicle routing problem with time windows, Journal of the Operational Research Society, 52 (2001), 523-537.   Google Scholar

[10]

H. Kamankesh and V. G. Agelidis, A sufficient stochastic framework for optimal operation of micro-grids considering high penetration of renewable energy sources and electric vehicles, Journal of Intelligent & Fuzzy Systems, 32 (2017), 373-387.   Google Scholar

[11]

I. KaraoglanF. AltiparmakI. Kara and B. Dengiz, A branch and cut algorithm for the location-routing problem with simultaneous pickup and delivery, European Journal of Operational Research, 211 (2011), 318-332.  doi: 10.1016/j.ejor.2011.01.003.  Google Scholar

[12]

I. KaraoglanF. AltiparmakI. Kara and B. Dengiz, The location-routing problem with simultaneous pickup and delivery: Formulations and a heuristic approach, Omega, 40 (2012), 465-477.   Google Scholar

[13]

M. N. Kritikos and G. Ioannou, The heterogeneous fleet vehicle routing problem with overloads and time windows, International Journal of Production Economics, 144 (2013), 68-75.   Google Scholar

[14]

G. LaporteY. Nobert and D. Arpin, An exact algorithm for solving a capacitated location-routing problem, Annals of Operations Research, 6 (1986), 293-310.   Google Scholar

[15]

G. LaporteY. Nobert and S. Taillefer, Solving a family of multi-depot vehicle routing and location-routing problems, Transportation Science, 22 (1988), 161-172.  doi: 10.1287/trsc.22.3.161.  Google Scholar

[16]

C. K. Y. LinC. K. Chow and A. Chen, A location-routing-loading problem for bill delivery services, Computers & Industrial Engineering, 43 (2002), 5-25.   Google Scholar

[17]

C. K. Y. Lin and R. C. W. Kwok, Multi-objective metaheuristics for a location-routing problem with multiple use of vehicles on real data and simulated data, European Journal of Operational Research, 175 (2006), 1833-1849.   Google Scholar

[18]

M. Lundy and A. Mees, Convergence of an annealing algorithm, Mathematical Programming, 34 (1986), 111-124.  doi: 10.1007/BF01582166.  Google Scholar

[19]

H. Min, Consolidation terminal location-allocation and consolidated routing problems, Journal of Business Logistics, 17 (1996), 235-263.   Google Scholar

[20]

H. Min, V. Jayaraman and R. Srivastava, Combined Location-Routing Problems: A Synthesis and Future Research Directions, vol. 108, Springer Berlin Heidelberg, 1998. Google Scholar

[21]

G. Nagy and S. Salhi, Location-routing: Issues, models and methods, European Journal of Operational Research, 177 (2007), 649-672.  doi: 10.1016/j.ejor.2006.04.004.  Google Scholar

[22]

G. Nagy and S. Salhi, Nested heuristic methods for the location-routing problem, 47 (1996), 1166-1174. Google Scholar

[23]

C. Prodhon,, in http://prodhonc.free.fr/homepage, 2016. Google Scholar

[24]

S. Salhi and M. Fraser, An integrated heuristic approach for the combined location vehicle fleet mix problem, Studies in Locational Analysis, 8 (1996), 3-21.   Google Scholar

[25]

S. Salhi and G. Nagy, A cluster insertion heuristic for single and multiple depot vehicle routing problems with backhauling, Journal of the Operational Research Society, 50 (1999), 1034-1042.   Google Scholar

[26]

M. Schwardt and J. Dethloff, Solving a continuous location-routing problem by use of a self-organizing map, International Journal of Physical Distribution & Logistics Management, 35 (2005), 390-408.   Google Scholar

[27]

R. Srivastava, Alternate solution procedures for the location-routing problem, Omega, 21 (1993), 497-506.   Google Scholar

[28]

D. Tuzun and L. I. Burke, A two-phase tabu search approach to the location routing problem, European Journal of Operational Research, 116 (1999), 87-99.   Google Scholar

[29]

T. H. WuC. Low and J. W. Bai, Heuristic solutions to multi-depot location-routing problems, Computers & Operations Research, 29 (2002), 1393-1415.   Google Scholar

[30]

X. ZhangZ. B. ZhangH. Broersma and X. Wen, On the complexity of edge-colored subgraph partitioning problems in network optimization, Discrete Mathematics & Theoretical Computer Science Dmtcs, 17 (2016), 227-244.   Google Scholar

show all references

References:
[1]

D. Ambrosinoa, Distribution network design: New problems and related models, European Journal of Operational Research, 165 (2005), 610-624.  doi: 10.1016/j.ejor.2003.04.009.  Google Scholar

[2]

R. T. BergerC. R. Coullard and M. S. Daskin, Location-routing problems with distance constraints, Transportation Science, 41 (2007), 29-43.   Google Scholar

[3]

T. W. Chien, Heuristic procedures for practical-sized uncapacitated location-capacitated routing problems, Decision Sciences, 24 (1993), 995-1021.   Google Scholar

[4]

C. H. Chu and J. Hopscotch, Further discussion for transit system of chicago, Journal of Discrete Mathematical Sciences & Cryptography, 20 (2017), 717-724.  doi: 10.1080/09720529.2016.1197600.  Google Scholar

[5]

G. Clarke and J. W. Wright, Scheduling of vehicles from a central depot to a number of delivery points, Operations Research, 12 (1964), 568-581.   Google Scholar

[6]

J. Dethloff, Vehicle routing and reverse logistics: The vehicle routing problem with simultaneous delivery and pick-up, OR-Spektrum, 23 (2001), 79-96.  doi: 10.1007/PL00013346.  Google Scholar

[7]

J. Geunes and B. M. Chang, Operations Research Models for Supply Chain Management and Design, vol. 76, Springer US, 1994. Google Scholar

[8]

B. GoldenA. AssadL. Levy and F. Gheysens, The fleet size and mix vehicle routing problem, Computers & Operations Research, 11 (1984), 49-66.   Google Scholar

[9]

G. IoannouM. Kritikos and G. Prastacos, A greedy look-ahead heuristic for the vehicle routing problem with time windows, Journal of the Operational Research Society, 52 (2001), 523-537.   Google Scholar

[10]

H. Kamankesh and V. G. Agelidis, A sufficient stochastic framework for optimal operation of micro-grids considering high penetration of renewable energy sources and electric vehicles, Journal of Intelligent & Fuzzy Systems, 32 (2017), 373-387.   Google Scholar

[11]

I. KaraoglanF. AltiparmakI. Kara and B. Dengiz, A branch and cut algorithm for the location-routing problem with simultaneous pickup and delivery, European Journal of Operational Research, 211 (2011), 318-332.  doi: 10.1016/j.ejor.2011.01.003.  Google Scholar

[12]

I. KaraoglanF. AltiparmakI. Kara and B. Dengiz, The location-routing problem with simultaneous pickup and delivery: Formulations and a heuristic approach, Omega, 40 (2012), 465-477.   Google Scholar

[13]

M. N. Kritikos and G. Ioannou, The heterogeneous fleet vehicle routing problem with overloads and time windows, International Journal of Production Economics, 144 (2013), 68-75.   Google Scholar

[14]

G. LaporteY. Nobert and D. Arpin, An exact algorithm for solving a capacitated location-routing problem, Annals of Operations Research, 6 (1986), 293-310.   Google Scholar

[15]

G. LaporteY. Nobert and S. Taillefer, Solving a family of multi-depot vehicle routing and location-routing problems, Transportation Science, 22 (1988), 161-172.  doi: 10.1287/trsc.22.3.161.  Google Scholar

[16]

C. K. Y. LinC. K. Chow and A. Chen, A location-routing-loading problem for bill delivery services, Computers & Industrial Engineering, 43 (2002), 5-25.   Google Scholar

[17]

C. K. Y. Lin and R. C. W. Kwok, Multi-objective metaheuristics for a location-routing problem with multiple use of vehicles on real data and simulated data, European Journal of Operational Research, 175 (2006), 1833-1849.   Google Scholar

[18]

M. Lundy and A. Mees, Convergence of an annealing algorithm, Mathematical Programming, 34 (1986), 111-124.  doi: 10.1007/BF01582166.  Google Scholar

[19]

H. Min, Consolidation terminal location-allocation and consolidated routing problems, Journal of Business Logistics, 17 (1996), 235-263.   Google Scholar

[20]

H. Min, V. Jayaraman and R. Srivastava, Combined Location-Routing Problems: A Synthesis and Future Research Directions, vol. 108, Springer Berlin Heidelberg, 1998. Google Scholar

[21]

G. Nagy and S. Salhi, Location-routing: Issues, models and methods, European Journal of Operational Research, 177 (2007), 649-672.  doi: 10.1016/j.ejor.2006.04.004.  Google Scholar

[22]

G. Nagy and S. Salhi, Nested heuristic methods for the location-routing problem, 47 (1996), 1166-1174. Google Scholar

[23]

C. Prodhon,, in http://prodhonc.free.fr/homepage, 2016. Google Scholar

[24]

S. Salhi and M. Fraser, An integrated heuristic approach for the combined location vehicle fleet mix problem, Studies in Locational Analysis, 8 (1996), 3-21.   Google Scholar

[25]

S. Salhi and G. Nagy, A cluster insertion heuristic for single and multiple depot vehicle routing problems with backhauling, Journal of the Operational Research Society, 50 (1999), 1034-1042.   Google Scholar

[26]

M. Schwardt and J. Dethloff, Solving a continuous location-routing problem by use of a self-organizing map, International Journal of Physical Distribution & Logistics Management, 35 (2005), 390-408.   Google Scholar

[27]

R. Srivastava, Alternate solution procedures for the location-routing problem, Omega, 21 (1993), 497-506.   Google Scholar

[28]

D. Tuzun and L. I. Burke, A two-phase tabu search approach to the location routing problem, European Journal of Operational Research, 116 (1999), 87-99.   Google Scholar

[29]

T. H. WuC. Low and J. W. Bai, Heuristic solutions to multi-depot location-routing problems, Computers & Operations Research, 29 (2002), 1393-1415.   Google Scholar

[30]

X. ZhangZ. B. ZhangH. Broersma and X. Wen, On the complexity of edge-colored subgraph partitioning problems in network optimization, Discrete Mathematics & Theoretical Computer Science Dmtcs, 17 (2016), 227-244.   Google Scholar

Figure 1.  The main steps of the TS-heuristics and SA-heuristics
Table 1.  Problem cost parameters for simulated instances
Parameter Value
Depot Capacity ($CD_j )$ Uniformly distributed over the interval [200,400]
Fixed cost ($FD_j )$ 3000 unit per depot
Vehicle Type Type A, B, C for customers.
Fixed cost ($FV_k )$ Cost (100,150,200) for type (A, B, C), respectively.
Capacity ($CV_k )$ Cost (100,200,300) for type (A, B, C), respectively
Distance cost ratio Unit cost distance (1, 1.5, 2) for type (A, B, C), respectively
Parameter Value
Depot Capacity ($CD_j )$ Uniformly distributed over the interval [200,400]
Fixed cost ($FD_j )$ 3000 unit per depot
Vehicle Type Type A, B, C for customers.
Fixed cost ($FV_k )$ Cost (100,150,200) for type (A, B, C), respectively.
Capacity ($CV_k )$ Cost (100,200,300) for type (A, B, C), respectively
Distance cost ratio Unit cost distance (1, 1.5, 2) for type (A, B, C), respectively
Table 2.  Parameter settings of TS-heuristics and SA-heuristics
TS-heuristics SA -heuristics
Parameter Value Parameter Value
max-add 5 initial temperature (location and routing phases) 50
max-swap 8 cooling rate (location phase) 0.95
max-route 6 cooling rate (routing phase) 0.9
tabu duration
(location phase)
8 final temperature (location and routing phase) 0.15
tabu duration
(routing phase)
10 no-improvement number of cycles (location and routing phases) 10
TS-heuristics SA -heuristics
Parameter Value Parameter Value
max-add 5 initial temperature (location and routing phases) 50
max-swap 8 cooling rate (location phase) 0.95
max-route 6 cooling rate (routing phase) 0.9
tabu duration
(location phase)
8 final temperature (location and routing phase) 0.15
tabu duration
(routing phase)
10 no-improvement number of cycles (location and routing phases) 10
Table 3.  Computational results for the formulations on small-size test problems
Original formulation Strong formulation
$N_C$ $N_0$ Gap% CPU #OP Gap% CPU #OP
15 3 45.82 86.29 10 5.04 48.02 10
20 3 36.02 1973.64 8 1.47 2074.65 9
20 4 51.80 2391.82 6 0.85 2619.46 7
30 4 26.39 3729.65 5 13.23 3482.73 6
40 4 38.74 5183.59 5 15.78 5827.84 5
30 5 33.90 4734.64 4 21.92 5418.38 5
40 5 46.29 5374.68 2 3.63 6016.73 3
50 5 34.62 6739.52 2 8.51 6473.63 3
40 6 29.43 7200.00 0 2.58 7200.00 0
50 6 37.58 7200.00 0 16.28 7200.00 0
Average 38.06 5279.52 8.93 4636.14
Original formulation Strong formulation
$N_C$ $N_0$ Gap% CPU #OP Gap% CPU #OP
15 3 45.82 86.29 10 5.04 48.02 10
20 3 36.02 1973.64 8 1.47 2074.65 9
20 4 51.80 2391.82 6 0.85 2619.46 7
30 4 26.39 3729.65 5 13.23 3482.73 6
40 4 38.74 5183.59 5 15.78 5827.84 5
30 5 33.90 4734.64 4 21.92 5418.38 5
40 5 46.29 5374.68 2 3.63 6016.73 3
50 5 34.62 6739.52 2 8.51 6473.63 3
40 6 29.43 7200.00 0 2.58 7200.00 0
50 6 37.58 7200.00 0 16.28 7200.00 0
Average 38.06 5279.52 8.93 4636.14
Table 4.  Computational results for relaxations of the formulations
LP of original formulation LP of strong formulation SLP of strong formulation
$N_C$ $N_0$ Gap% CPU #OP Gap% CPU #OP
15 3 45.82 0.03 18.63 0.02 4.75 0.43
20 3 36.02 1.84 1.76 1.59 2.04 15.71
20 4 51.80 2.53 1.09 2.37 1.84 1.68
30 4 26.39 6.85 16.39 5.89 4.73 184.93
40 4 38.74 6.52 2.54 7.41 5.91 347.55
30 5 33.90 12.48 11.64 11.91 2.43 194.69
40 5 46.29 11.53 10.83 10.53 3.74 842.68
50 5 34.62 14.83 18.46 13.96 6.47 1043.79
40 6 29.43 17.35 13.58 15.37 10.25 357.73
50 6 37.58 28.59 17.36 22.54 12.54 1074.51
Average 38.06 10.26 11.23 13.13 5.47 406.37
LP of original formulation LP of strong formulation SLP of strong formulation
$N_C$ $N_0$ Gap% CPU #OP Gap% CPU #OP
15 3 45.82 0.03 18.63 0.02 4.75 0.43
20 3 36.02 1.84 1.76 1.59 2.04 15.71
20 4 51.80 2.53 1.09 2.37 1.84 1.68
30 4 26.39 6.85 16.39 5.89 4.73 184.93
40 4 38.74 6.52 2.54 7.41 5.91 347.55
30 5 33.90 12.48 11.64 11.91 2.43 194.69
40 5 46.29 11.53 10.83 10.53 3.74 842.68
50 5 34.62 14.83 18.46 13.96 6.47 1043.79
40 6 29.43 17.35 13.58 15.37 10.25 357.73
50 6 37.58 28.59 17.36 22.54 12.54 1074.51
Average 38.06 10.26 11.23 13.13 5.47 406.37
Table 5.  Perform comparison of HFLRPSPDO on the effect of capacity violation
$N_C $ $N_0 $ Cost without violation Cost with violation Improvement on cost (%) CPU times
(sec)
Capacity violation (%)
15 3 29222 24731 15.37 86.29 6.82
20 3 32626 29742 8.84 1973.64 7.38
20 4 30325 27387 9.69 2391.82 9.65
30 4 51172 48373 5.47 3729.65 4.27
40 4 66101 61382 7.14 5183.59 6.49
30 5 51798 46183 10.84 4734.64 3.85
40 5 62976 53284 15.39 5374.68 6.58
50 5 64828 59337 8.47 6739.52 9.83
40 6 59014 55833 5.39 7200.00 5.48
50 6 64188 57821 9.92 7200.00 6.29
Average 51225 46407 9.65 6.66
$N_C $ $N_0 $ Cost without violation Cost with violation Improvement on cost (%) CPU times
(sec)
Capacity violation (%)
15 3 29222 24731 15.37 86.29 6.82
20 3 32626 29742 8.84 1973.64 7.38
20 4 30325 27387 9.69 2391.82 9.65
30 4 51172 48373 5.47 3729.65 4.27
40 4 66101 61382 7.14 5183.59 6.49
30 5 51798 46183 10.84 4734.64 3.85
40 5 62976 53284 15.39 5374.68 6.58
50 5 64828 59337 8.47 6739.52 9.83
40 6 59014 55833 5.39 7200.00 5.48
50 6 64188 57821 9.92 7200.00 6.29
Average 51225 46407 9.65 6.66
Table 6.  Computational results of the TS and SA on small-size problems
TS-heuristics SA-heuristics
$N_C$ $N_0$ Gap% CPU #OP Gap% CPU #OP
15 3 0.00 24731 38.13 0.00 24731 40.57
20 3 0.00 29742 63.59 0.00 29742 54.13
20 4 0.01 27387 73.82 0.02 27390 80.53
30 4 0.23 48373 102.43 0.28 48397 138.62
40 4 0.91 61382 162.57 0.73 61273 147.76
30 5 0.35 46183 90.37 0.34 46178 128.54
40 5 0.97 53284 194.63 1.14 53307 251.72
50 5 1.24 59337 288.79 1.45 59460 300.05
40 6 0.99 55833 239.40 1.06 55872 207.24
50 6 1.93 57821 247.56 1.82 57759 277.42
Average 0.66 46407 150.13 0.75 46411 162.66
TS-heuristics SA-heuristics
$N_C$ $N_0$ Gap% CPU #OP Gap% CPU #OP
15 3 0.00 24731 38.13 0.00 24731 40.57
20 3 0.00 29742 63.59 0.00 29742 54.13
20 4 0.01 27387 73.82 0.02 27390 80.53
30 4 0.23 48373 102.43 0.28 48397 138.62
40 4 0.91 61382 162.57 0.73 61273 147.76
30 5 0.35 46183 90.37 0.34 46178 128.54
40 5 0.97 53284 194.63 1.14 53307 251.72
50 5 1.24 59337 288.79 1.45 59460 300.05
40 6 0.99 55833 239.40 1.06 55872 207.24
50 6 1.93 57821 247.56 1.82 57759 277.42
Average 0.66 46407 150.13 0.75 46411 162.66
Table 7.  Computational results of the TS and SA on larger-size problems
TS-heuristics SA-heuristics
$N_C$ $N_0$ Gap% CPU #OP Gap% CPU #OP
50 8 2.41 54823 234.65 2.08 54711 208.40
80 8 1.73 113897 383.59 2.36 114602 361.47
100 8 0.96 137254 437.42 1.53 138029 472.43
80 9 1.24 100286 369.38 2.37 101405 390.22
100 9 0.72 130287 482.36 1.24 130960 538.52
120 9 0.92 157239 501.36 0.83 157099 409.25
150 9 1.09 186275 472.17 0.95 186117 463.47
80 10 3.73 983673 302.54 2.54 982388 378.49
100 10 2.27 125362 261.52 2.36 125472 330.52
120 10 1.34 139927 289.55 2.03 140080 375.38
150 10 1.46 173845 573.82 3.41 174186 593.54
200 10 2.03 237419 479.53 3.56 238279 636.39
Average 1.66 211690 398.99 2.11 211944 429.84
TS-heuristics SA-heuristics
$N_C$ $N_0$ Gap% CPU #OP Gap% CPU #OP
50 8 2.41 54823 234.65 2.08 54711 208.40
80 8 1.73 113897 383.59 2.36 114602 361.47
100 8 0.96 137254 437.42 1.53 138029 472.43
80 9 1.24 100286 369.38 2.37 101405 390.22
100 9 0.72 130287 482.36 1.24 130960 538.52
120 9 0.92 157239 501.36 0.83 157099 409.25
150 9 1.09 186275 472.17 0.95 186117 463.47
80 10 3.73 983673 302.54 2.54 982388 378.49
100 10 2.27 125362 261.52 2.36 125472 330.52
120 10 1.34 139927 289.55 2.03 140080 375.38
150 10 1.46 173845 573.82 3.41 174186 593.54
200 10 2.03 237419 479.53 3.56 238279 636.39
Average 1.66 211690 398.99 2.11 211944 429.84
[1]

Yongge Tian, Pengyang Xie. Simultaneous optimal predictions under two seemingly unrelated linear random-effects models. Journal of Industrial & Management Optimization, 2020  doi: 10.3934/jimo.2020168

[2]

Min Chen, Olivier Goubet, Shenghao Li. Mathematical analysis of bump to bucket problem. Communications on Pure & Applied Analysis, 2020, 19 (12) : 5567-5580. doi: 10.3934/cpaa.2020251

[3]

Qingfang Wang, Hua Yang. Solutions of nonlocal problem with critical exponent. Communications on Pure & Applied Analysis, 2020, 19 (12) : 5591-5608. doi: 10.3934/cpaa.2020253

[4]

Stefano Bianchini, Paolo Bonicatto. Forward untangling and applications to the uniqueness problem for the continuity equation. Discrete & Continuous Dynamical Systems - A, 2020  doi: 10.3934/dcds.2020384

[5]

Marco Ghimenti, Anna Maria Micheletti. Compactness results for linearly perturbed Yamabe problem on manifolds with boundary. Discrete & Continuous Dynamical Systems - S, 2020  doi: 10.3934/dcdss.2020453

[6]

Alberto Bressan, Sondre Tesdal Galtung. A 2-dimensional shape optimization problem for tree branches. Networks & Heterogeneous Media, 2020  doi: 10.3934/nhm.2020031

[7]

Fioralba Cakoni, Pu-Zhao Kow, Jenn-Nan Wang. The interior transmission eigenvalue problem for elastic waves in media with obstacles. Inverse Problems & Imaging, , () : -. doi: 10.3934/ipi.2020075

[8]

Marion Darbas, Jérémy Heleine, Stephanie Lohrengel. Numerical resolution by the quasi-reversibility method of a data completion problem for Maxwell's equations. Inverse Problems & Imaging, 2020, 14 (6) : 1107-1133. doi: 10.3934/ipi.2020056

[9]

Shenglan Xie, Maoan Han, Peng Zhu. A posteriori error estimate of weak Galerkin fem for second order elliptic problem with mixed boundary condition. Discrete & Continuous Dynamical Systems - B, 2020  doi: 10.3934/dcdsb.2020340

[10]

Gang Bao, Mingming Zhang, Bin Hu, Peijun Li. An adaptive finite element DtN method for the three-dimensional acoustic scattering problem. Discrete & Continuous Dynamical Systems - B, 2020  doi: 10.3934/dcdsb.2020351

[11]

Zhilei Liang, Jiangyu Shuai. Existence of strong solution for the Cauchy problem of fully compressible Navier-Stokes equations in two dimensions. Discrete & Continuous Dynamical Systems - B, 2020  doi: 10.3934/dcdsb.2020348

[12]

Mehdi Badsi. Collisional sheath solutions of a bi-species Vlasov-Poisson-Boltzmann boundary value problem. Kinetic & Related Models, , () : -. doi: 10.3934/krm.2020052

[13]

Lingfeng Li, Shousheng Luo, Xue-Cheng Tai, Jiang Yang. A new variational approach based on level-set function for convex hull problem with outliers. Inverse Problems & Imaging, , () : -. doi: 10.3934/ipi.2020070

2019 Impact Factor: 1.233

Metrics

  • PDF downloads (178)
  • HTML views (501)
  • Cited by (2)

Other articles
by authors

[Back to Top]