دانلود مقاله ISI انگلیسی شماره 551
ترجمه فارسی عنوان مقاله

مسیریابی چند دوره ای وسیله نقلیه و برنامه ریزی عوامل همراه با گزینه های برون سپاری

عنوان انگلیسی
Multi-period vehicle routing and crew scheduling with outsourcing options
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی ترجمه فارسی
551 2008 17 صفحه PDF سفارش دهید
دانلود فوری مقاله + سفارش ترجمه

نسخه انگلیسی مقاله همین الان قابل دانلود است.

هزینه ترجمه مقاله بر اساس تعداد کلمات مقاله انگلیسی محاسبه می شود.

این مقاله تقریباً شامل 9152 کلمه می باشد.

هزینه ترجمه مقاله توسط مترجمان با تجربه، طبق جدول زیر محاسبه می شود:

شرح تعرفه ترجمه زمان تحویل جمع هزینه
ترجمه تخصصی - سرعت عادی هر کلمه 12 تومان 15 روز بعد از پرداخت 109,824 تومان
ترجمه تخصصی - سرعت فوری هر کلمه 24 تومان 8 روز بعد از پرداخت 219,648 تومان
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : International Journal of Production Economics, Volume 113, Issue 2, June 2008, Pages 980–996

ترجمه کلمات کلیدی
- مسیریابی یکپارچه ی وسیله نقلیه و برنامه ریزی عوامل -      چند دوره ای -     گزینه های برون سپاری - روش محاسباتی بهینه سازی -
کلمات کلیدی انگلیسی
Integrated vehicle routing and crew scheduling, Multi-period VRP, Outsourcing options, Metaheuristics,
پیش نمایش مقاله
پیش نمایش مقاله مسیریابی چند دوره ای وسیله نقلیه و برنامه ریزی عوامل همراه با گزینه های برون سپاری

چکیده انگلیسی

The planning problems confronting logistics service providers frequently involve complex decisions. Motivated by a real-life case study, this paper considers short-range weekly planning on the part of postal companies that must decide about pickup tours and delivery tours for fluctuating volume (number of shipments), with time windows for the demand points, in consideration of variable vehicle capacities and personnel planning, and including outsourcing decisions for tours and drivers. This problem can be formulated as a model of combined tour and personnel planning. However, because a real formulation of the problem involves hundreds of millions of variables and numerous constraints, in practice only heuristic solutions prove relevant. This paper proposes a hybrid metaheuristic combined with a construction heuristic that—as computer simulations have demonstrated—are suitable for practice.

مقدمه انگلیسی

2. How should postcarriage be handled? Postcarriage is the delivery of shipments that have been sorted at the depot. Certain volumes are ready at the depot for delivery at given points in time. Postcarriage then requires a decision concerning which tours are to be conducted from the depot to the demand points (e.g., post offices) and back to the depot. Again time windows must be observed for the depot and the demand points. 3. Which types of vehicle with varying capacities (e.g., tractor/trailer combinations) should be used for individual tours? 4. Which of the company's own (limited) personnel should be allocated to a tour? 5. Should leasing drivers be allocated for some tours with the company's own vehicles? 6. Should some tours be outsourced to subcontracting freight carriers, and if so, which tours? Points 1–6 above represent tour planning problems with time windows and variable vehicle capacities. Because precarriage and postcarriage must be planned for each (half) workday, a work week comprises 11 half-day planning periods (τ={1,2,3,…,11τ={1,2,3,…,11}, two for each workday and one on Saturday) with respective volumes varying from period to period. The 24-h planning period 1 starts with the tours Monday morning (tour period τ=1) with postcarriage and with precarriage tours in the afternoon (τ=2) and ends with planning period 11 with precarriage on Saturday. Thus a 24-h planning period is characterized by two tour periods (τ, τ+1). The following decisions must be made regarding alternative personnel allocation options:

نتیجه گیری انگلیسی

Operational planning problems of transportations providers, which arise for postal service organizations and package delivery companies, lead to complex decision tasks of combined vehicle routing and personnel planning. A set of regulations must be followed for each driver, e.g., maximum duration, a break after a certain amount of driving activity. Furthermore, management must decide whether tours should be conducted by their own (limited) crew or contracted to leasing drivers or outsourced to carriers. This problem was formulated as a nonlinear mixed-integer programming model. Due to the tremendous number of variables and constraints that arise for such real problems, only heuristic solution concepts can be applied in practice. In this paper, we develop a solution framework that allows using different metaheuristics. Computational results show that especially the embedded Tabu Search procedure is very competitive for solving such real problems.

دانلود فوری مقاله + سفارش ترجمه

نسخه انگلیسی مقاله همین الان قابل دانلود است.

هزینه ترجمه مقاله بر اساس تعداد کلمات مقاله انگلیسی محاسبه می شود.

این مقاله شامل 9152 کلمه می باشد.

هزینه ترجمه مقاله توسط مترجمان با تجربه، طبق جدول زیر محاسبه می شود:

شرح تعرفه ترجمه زمان تحویل جمع هزینه
ترجمه تخصصی - سرعت عادی هر کلمه 12 تومان 15 روز بعد از پرداخت 109,824 تومان
ترجمه تخصصی - سرعت فوری هر کلمه 24 تومان 8 روز بعد از پرداخت 219,648 تومان
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.