Energy-efficient metro operation has received increasing attention because of the energy cost and environmental concerns. This paper developed an integrated optimization model on train control timetable to minimize net consumption. The extents motoring braking as well configurations such headway interstation runtime are optimized consumption with consideration utilizing regenerative energy. An improved is proposed reduce traction by allowing coasting downhill slopes much possible. Variations...

In order to detect the size and shape of defects inside wood, an image reconstruction method based on segmented propagation rays stress waves is proposed. The uses sensors obtain wave velocity data by hanging around timber equally, visualizes those data, reconstructs internal with visualized rays. basis algorithm precisely segmenting benefit spatial interpolation. First, a ray segmentation using elliptical neighborhood technique proposed, which can be used segment estimate values nearby...

Modern trams, as a rapidly developed high-volume transport model, have strict requirements on schedule, because the delay will reduce attractiveness of public transportation to passengers. To improve punctuality and reliability, Transit Signal Priority (TSP) has been employed at intersections, which can extend or insert green phase trams. However, extending inserting for every tram might lead heavy delays crossing vehicles. address this problem, study an integrated optimization model...

Prioritizing traffic signals for trams crossing intersections without stops can increase the service punctuality and travel speed of trams, but it may also delays other vehicles at intersections. This paper presents a model on coordinated control among successive along tramline, taking into account driving characteristics vehicles. The objective is maximizing valid bandwidth vehicle green wave to reduce delays, while cross stops. Linear Interactive General Optimizer (LINGO) applied solve...

Abstract Prostatic hyperplasia and tumor are common diseases, the minimally invasive surgery inserting instruments through urethra into prostate is commonly conducted. Taking robotic manipulator for such consideration, this paper analyses workspace of end effector, proposes distribution error fixed point tracking effector on cone bottom surface as basis control implementation manipulator. The D-H coordinate system established trajectory planning in Cartesian space carried out. digital model...

Relationship-based access control (ReBAC) provides a high level of expressiveness and flexibility that promotes security information sharing. We formulate ReBAC as an object-oriented extension attribute-based (ABAC) in which relationships are expressed using fields refer to other objects, path expressions used follow chains between objects.

30%-40% energy consumption of the HVAC system is caused by chillers. The chillers highly depends on quality operation strategy. A chiller strategy based multiple-objective optimization proposed in this paper. consists three steps: (1) With effectiveness functions, two indicators goodness, indoor comfort and consumption, are quantified to (2) These integrated one comprehensive indicator. (3) optimal condition determined an algorithm maximize parameters defined according on-site surveys,...

Since unexpected event occurrences are inevitable, an efficient and effective rescheduling approach is critical in freight railway day-to-day operations. Represented by the minimal-delay objectives, most commonly used efficiency-oriented ignores role of train priority poses equity problems rescheduling. For equity, different also reflects preference deciding orders; i.e., high-priority likely to be favorable. However, a conflict may laid between reducing delays emphasizing priority. Hence,...

In order to reduce the influence of bus signal priority on non-priority phase, this paper takes intersection for arterial road urban traffic as research object. Based basic theory line control, taking width green wave band social flow in coordinated direction limiting condition, considering service level constraint intersection, based calculation method critical queue capacity, control strategy is proposed. Compared with scheme, average delay time decreases by 15.7 s, a decrease 8.3%. The...

Modern trams usually own passive transit signal priority (TSP) to avoid interruption from traffic signals along the route. The key TSP depends on strictly stick recommend travel time between intersections. However, effectiveness of can be weakened by dwell fluctuation due uncertain passenger demand at stations. This paper proposes a two-stage stochastic optimization model for timetable and tram control improve reliability considering times. first stage study focuses designing alternatives,...

This article is mainly about the study of Urology Surgical Manipulator for laser ablation prostate lesions. Firstly, characteristics operation process are analyzed, and inverse kinematics serial manipulator calculated by operation. The solution precondition controlling motion manipulator. Secondly, genetic algorithm used to optimize size verifying solution, which makes more compact while predetermined function realized. Finally, considering actual mechanical system, using Monte Carlo method...

Relationship-based access control (ReBAC) provides a high level of expressiveness and flexibility that promotes security information sharing. We formulate ReBAC as an object-oriented extension attribute-based (ABAC) in which relationships are expressed using fields refer to other objects, path expressions used follow chains between objects. policy mining algorithms have potential significantly reduce the cost migration from legacy systems ReBAC, by partially automating development existing...

Abstract The increment of design speed metro system will increase train energy cost while reduce passengers’ travel time. To determine reasonable speeds different inter-stations in a line, the factors including passenger demand, operation and interval distance need to be taken into account. However, common practice adopts uniform for whole which is unsuitable line with large variations on distances inter-stations. Therefore, this paper proposed optimization model given conditions control...

Approaching operation closure of an urban rail network, the service accessibility gradually decreases and headway becomes longer. Timetable synchronization last trains is effective way to improve crucial original-destinations (SACOD) reduce waiting time transfer passengers. The determined by connections trains, while passengers depends on train arrival departure times. In this regard, paper proposes a two-phase model which seeks best firstly then attains most appropriate times contributing...