Seat Interference Antar Penumpang Pada Model Boarding Pesawat Terbang

Ada dua keadaan untuk sebuah pesawat, keadaan pertama adalah pada saat pesawat tersebut sedang berada di darat dan keadaan kedua adalaha saat peswat tersebut sedang berada di udara. Maskapai penerbangan akan mendapat keuntungan pada saat pesawat mereka sedang terbang. Banyak hal yang mempengaruhi lama pesawat berada di darat, antara lain : waktu penumpang turun, bongkar muat barang, pengisian bahan baker, boarding time, dll. Penelitian ini menyajikan beberapa model boarding untuk mengurangi seat interference dan untuk mengurangi waktu boarding. Mixed Integer Non Linier Programing digunakan untuk menghasilkan model boarding. ProModel digunakan untuk simulasi, hasil simulasi adalah waktu boarding dan seat interference. Airbus-320 digunakan untuk menerapkan model simulasi ini. Beberapa hal yang mempengaruhi strategi boarding adalah jumlah baris, jumlah grup dan jumlah penumpang yang dimasukkan untuk tiap grup. Hasil simulasi memperlihatkan bahwa model boarding dengan 6 grup dapat mengurangi jumlah seat interference sebesar 85,5% dan mengurangi waktu boarding sebesar 6,82% dibandingkan dengan menggunakan model tradisional back to front

Exploring the role of Modelling, Simulation, and Visualisation (MSV) in innovating healthcare environmental design

There exists a global and national need for improved understanding of how innovative solutions can be developed and applied to the therapeutic design of new hospitals. This necessity is growing as National Health Service (NHS) infrastructures face challenges of: overcrowding; thermal energy use and comfort; lighting; hygiene and Health Care Acquired Infection (HCAI); and ventilation. These issues emphasise considerable need for change in the way hospitals are designed in order to become built environments that promote health, and enhance patient wellbeing, staff performance, operational efficiency and medical outcomes. This paper reviewed current literature and tools relating to advances in MSV technology, particularly in: 3 Dimensional (3D) Computer Aided Design (CAD); Building Information Modelling (BIM); Parametric Modelling and Environmental Simulation; Construction Simulation; Virtual Reality (VR); and Facility Planning and Design Simulation. Their applicability to healthcare environmental design was reviewed to identify: examples of good practice; evidence based solutions and current trends; and conceptualise a Virtual Health Promoting Environment (VHE) that integrates MSV tools for optimised building performance. It was discovered that MSV has an important role to play in facilitating innovation and stimulating change from traditional healthcare design approaches to new approaches that support healthcare environmental design aimed at increase in the evidence base and optimisation of performance within multiple environmental parameters

A critical evaluation and comparison of four manufacturing simulators using analytic hierarchy process

In the period of continuous change in global business environment, organizations, large and small, are finding it increasingly difficult to deal with, and adjust to the demands for such change. Simulation is a powerful tool for allowing designers imagine new systems and for enabling them to both quantify and to observe behaviour. Currently the market offers a variety of simulation software packages. Some are less expensive than others. Some are generic and can be used in a wide variety of application areas while others are more specific. Some have powerful features for modelling while others provide only basic features. Modelling approaches and strategies are different for different packages. Companies are seeking advice about the desirable features of software to manufacture simulation, depending on the purpose of its use. Because of this, the importance of an adequate approach to simulation software evaluation and comparison is apparent. This paper presents a critical evaluation of four widely used manufacturing simulators: NX-IDEAS, Star-CD, Micro Saint Sharp and ProModel. Following a review of research into simulation software evaluation, an evaluation and comparison of the above simulators is performed. This paper illustrates and assesses the role the Analytic Hierarchy Process (AHP) played in simulation software evaluation and selection. The main purpose of this evaluation and comparison is to discover the suitability of certain types of simulators for particular purposes

Construction time-cost model in Croatia

The paper deals with the applicability of the time-cost model for calculating the sustainable construction time for building projects in Croatia. In this model the time is expressed as a function of money in the project, while the specific constants K and B need to be determined. These constants depend on economic characteristics of the country or a larger area, therefore had to be separately calculated for a region with similar economic characteristics. The modelling of the constants was performed for two groups of building projects - the roads and residential and office multi-storey buildings. The obtained results have been analyzed and compared to the corresponding results from abroad

Современные Методологические и Инструментальные Подходы Моделирования Бизнес-Задач

Работа посвящена оценке роли и перспективам использования моделирования при решении бизнес-задач. Выделены современные подходы моделирования, используемые при описании архитектуры, разработке модели деятельности организации и проведении реинжиниринга.. Приведено краткое изложение существующих методологий и инструментальных средств, применяемых в современном бизнес-моделировании

Use of discrete event simulation in hospital capacity planning

In recent years, the healthcare industry is undergoing a rapid expansion in the United States. For healthcare facilities, resource planning at early design stage is a critical step before architectural design. The ‘resources' here refer to both long term resources (pods, rooms, beds, configuration of one pod) in terms of capacity and configuration, and short term resources(staffs, equipments) in terms of capacity and allocation. To achieve performance targets defined by the clients, such as staff/equipment/bed utilization efficiency, average waiting time of all patients, turn away rate, an assessment and verification at the preliminary planning stage is necessary. There are at least two methods to solve this problem. The first is analytical in nature, relying on queuing theory, and falls under the industrial engineering field. The other is computational in nature, relying on process simulation, and specifically discrete event simulation. While queuing theory is easier to conduct, usually requiring less data, and providing more generic rules than simulation, simulation methods result in detailed information about patient flow modeling and deliver more accurate results. This paper is divided into three parts. The first part introduces queuing theory and discrete event simulation in terms of their principles, features and applications in healthcare planning. This is followed by a case study in the ED using discrete event simulation to plan pod configuration and number of pods for an emergency department. During this process, the simulation tool is introduced as an example instrument for advanced DES simulation. The paper ends with a discussion of outcomes. (1) DES is capable to differentiate between alternatives with small changes, and can be widely used to do capacity planning for healthcare facilities. (2) the chosen simulation tool supports the modelling and analysis steps well

Iterchanging Discrete Event Simulationprocess Interaction Modelsusing The Web Ontology Language - Owl

Discrete event simulation development requires significant investments in time and resources. Descriptions of discrete event simulation models are associated with world views, including the process interaction orientation. Historically, these models have been encoded using high-level programming languages or special purpose, typically vendor-specific, simulation languages. These approaches complicate simulation model reuse and interchange. The current document-centric World Wide Web is evolving into a Semantic Web that communicates information using ontologies. The Web Ontology Language OWL, was used to encode a Process Interaction Modeling Ontology for Discrete Event Simulations (PIMODES). The PIMODES ontology was developed using ontology engineering processes. Software was developed to demonstrate the feasibility of interchanging models from commercial simulation packages using PIMODES as an intermediate representation. The purpose of PIMODES is to provide a vendor-neutral open representation to support model interchange. Model interchange enables reuse and provides an opportunity to improve simulation quality, reduce development costs, and reduce development times

Diseño y análisis de cadenas de suministro usando herramientas de optimización y simulación, considerando estratégicamente la disponibilidad dinámica de la materia prima

CD-T 658.72 S1; 153 pUniversidad Libre Seccional Pereir