Monday 1st of June - 11h00: two seminars by Rossella Pozzi and Fernanda Strozzi
by Announcements of talks＠IDSIA
Dear All,
next Monday, the 1st of June, from 11:00 onwards, in IDSIA’s meeting room:
Rossella Pozzi
TITLE: Introducing capacity constraint in multi-product manufacturing environments
ABSTRACT:
The work proposes two models to incorporate the capacity constraint in multi-product manufacturing environments. In the first manufacturing environment, production is managed according to a pull policy, in which production is regulated by minimum and maximum inventory levels on each item (i.e., a min-max inventory policy). In particular, the work aims at developing a capacity-constrained version of the classical Economic Order Quantity (EOQ) model (Harris, 1913) exploiting the analogy between a multi-product production system with finite capacity and a hybrid system. The specific hybrid system considered as a reference is the “switched arrival system” proposed by Chase et al. (1993). In this framework, the pull policy of the production system is the equivalent to the control of the hybrid system. A linear programming model is developed to identify the minimum and maximum inventory thresholds on each product that minimize the distance between the average order quantity of each item and the corresponding classical EOQ (Harris, 1913).
In the second manufacturing environment, production is managed according to a capacity-constrained push policy releasing the constraint related to lead times pre deterined (a priori). In particular, the work aims at developing a capacity-constrained version of the classical Material Requirements Planning (Orlicky, 1976) by means of linear programming.
Fernanda Strozzi
TITLE: Bibliometrics and Citation Network Analysis of Selected Topics in the Field of Wireless Sensor Networks.
ABSTRACT:
A fast-developing topic in field of ad-hoc sensor networks concerns the development of low energy-consumption wireless sensor systems to detect the emergence of coherent signals indicative of certain phenomena such as, for example, security threats or structural performance criteria in widely distributed structural elements. The range of technical fields related to the development of such systems is very broad, encompassing power electronics, network protocols and connectivity, and mathematical methods for data analysis. Given the ever-increasing literature output, it is sometimes difficult to garner an overview of the main research areas, who conducts it, and how they are connected. In this presentation an overview of selected topics retrieved from the Web of Science Core collection will be presented and post-processed using graph analysis methods to detect connectivity and salient features between authors, funding agencies and research fields.
8 years, 11 months
Monday 1st of June - 11h00: two seminars by Rossella Pozzi and Fernanda Strozzi
by Announcements of talks＠IDSIA
Dear All,
next Monday, the 1st of June, from 11:00 onwards, in IDSIA’s meeting room:
Rossella Pozzi
TITLE: Introducing capacity constraint in multi-product manufacturing environments
ABSTRACT:
The work proposes two models to incorporate the capacity constraint in multi-product manufacturing environments. In the first manufacturing environment, production is managed according to a pull policy, in which production is regulated by minimum and maximum inventory levels on each item (i.e., a min-max inventory policy). In particular, the work aims at developing a capacity-constrained version of the classical Economic Order Quantity (EOQ) model (Harris, 1913) exploiting the analogy between a multi-product production system with finite capacity and a hybrid system. The specific hybrid system considered as a reference is the “switched arrival system” proposed by Chase et al. (1993). In this framework, the pull policy of the production system is the equivalent to the control of the hybrid system. A linear programming model is developed to identify the minimum and maximum inventory thresholds on each product that minimize the distance between the average order quantity of each item and the corresponding classical EOQ (Harris, 1913).
In the second manufacturing environment, production is managed according to a capacity-constrained push policy releasing the constraint related to lead times pre deterined (a priori). In particular, the work aims at developing a capacity-constrained version of the classical Material Requirements Planning (Orlicky, 1976) by means of linear programming.
Fernanda Strozzi
TITLE: Bibliometrics and Citation Network Analysis of Selected Topics in the Field of Wireless Sensor Networks.
ABSTRACT:
A fast-developing topic in field of ad-hoc sensor networks concerns the development of low energy-consumption wireless sensor systems to detect the emergence of coherent signals indicative of certain phenomena such as, for example, security threats or structural performance criteria in widely distributed structural elements. The range of technical fields related to the development of such systems is very broad, encompassing power electronics, network protocols and connectivity, and mathematical methods for data analysis. Given the ever-increasing literature output, it is sometimes difficult to garner an overview of the main research areas, who conducts it, and how they are connected. In this presentation an overview of selected topics retrieved from the Web of Science Core collection will be presented and post-processed using graph analysis methods to detect connectivity and salient features between authors, funding agencies and research fields.
8 years, 11 months
Joachim Ott, ETH: Vision-based surface classification for micro aerial vehicles
by Announcements of talks＠IDSIA
Short talk tomorrow (Wednesday May 27) in the meeting room at 11:30 by
Joachim Ott, a student at ETH working with the Robotics and Perception
Group at the University of Zurich.
Title:
Vision-based surface classification for micro aerial vehicles
Abstract:
Micro Aerial Vehicles (MAVs) are becoming an increasingly important
tool assisting humans in tasks like rescue and monitoring. To succeed
they have to be able to navigate autonomously using vision and
inertial measurement as sole sensor modalities, i.e. no GPS or laser
scanner.
Our current Robotics and Perception Group framework allows 3D
reconstruction of the MAVs environment by using just a single camera.
This reconstruction enables an autonomous landing procedure, during
which the MAV scans the ground for a flat surface and subsequently
initializes landing. The current project aims at extending the landing
procedure with a surface classifier, where camera images as well as an
elevation map are used to classify the ground into classes (e.g.
grass, gravel, water etc.) and assigning them a landing score, i.e.
how preferable it is to land on it.
8 years, 11 months
TODAY Fwd: TALK: Wednesday, May 6, h. 11:30 - Enriching the Traveling Salesman Problem with GIS Facilities, Gloria Cerasela Crişan, Vasile Alecsandri University of Bacău, Romania.
by Announcements of talks＠IDSIA
TODAY
-------- Messaggio originale --------
Oggetto: TALK: Wednesday, May 6, h. 11:30 - Enriching the Traveling
Salesman Problem with GIS Facilities, Gloria Cerasela Crişan, Vasile
Alecsandri University of Bacău, Romania.
Data: Wed, 22 Apr 2015 09:34:16 +0200
Mittente: Luca Maria Gambardella <luca(a)idsia.ch>
A: Announcements of talks at IDSIA <talks(a)idsia.ch>
CC: ceraselacrisan(a)yahoo.com, Mehdi Jazayeri <mehdi.jazayeri(a)unisi.ch>,
enechita(a)ub.ro
May 6th, h. 11:30 at IDSIA
Title.
Enriching the Traveling Salesman Problem with GIS Facilities
Gloria Cerasela Crişan, PhD lecturer at the Faculty of Sciences, Vasile
Alecsandri University of Bacău, Romania.
Abstract.
The academic Traveling Salesman Problem (TSP) benefits now from the new
features provided by the Geographic Information Systems (GISs).
The solutions to such enriched TSP instances have more accurate
representations on Earth and can develop the connections between the
research in Combinatorial Optimization and Logistics, Transportation,
Geoinformatics and Geoengineering.
This work presents the first national GIS-enriched TSP instance, its
exact solution and its representation with an online free tool.
Author’s short presentation.
Gloria Cerasela Crişan is a PhD lecturer at the Faculty of Sciences,
Vasile Alecsandri University of Bacău, Romania.
She teaches Databases, Computational Logics and Concurrent programming
at undergraduate level, and Cryptography and Software Engineering at
master’s level.
Her research focuses on Combinatorial Optimization, Complex problem
solving and Metaheuristics.
8 years, 11 months