检索结果-内蒙古大学图书馆

A layer-building algorithm for the three-dimensional multiple bin packing problem: A case study in an automotive company

引用

IFAC-PapersOnLine 2015年第3期48卷 490-495页

作者： Saraiva, Rommel D. Nepomuceno, Napoleão Pinheiro, Plácido R. Graduate Program in Applied Informatics University of Fortaleza Av. Washington Soares 1321 - J30 Fortaleza 60.811-905 Brazil

The three-dimensional multiple bin packing problem (3D-MBPP) consists of packing a set of items into a number of bins with different dimensions so as to optimize a given objective function, e.g., minimize the number of bins used to pack the items. In this paper, we consider a real world 3D-MBPP with several cargo constraints that arises from an automotive maker. We propose an algorithm that first builds horizontal layers of identical items and then, according to different selection criteria, greedily generates packing patterns by loading one layer at a time. Computational experiments performed on benchmark instances are reported, and the results are compared to those achieved through a well-known constructive heuristic. © 2015, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.

关键词： Combinatorial optimization

来源：评论

学校读者我要写书评

暂无评论

An Analysis of UX Based on Users’ Emotional Intention and Values, Both Expressed Through Twitter Posts 1

引用

8th Workshop of Human-Computer Interaction Aspects to the Social Web, WAIHCWS 2017 and the 9th Workshop of Human-Computer Interaction Aspects to the Social Web, WAIHCWS 2018

作者： Furtado, Elizabeth S. Mendes, Marilia S. Oliveira, Denilson C. Lima, Lanna Graduate Program in Applied Informatics University of Fortaleza FortalezaCE Brazil RussasCE Brazil

ISBN: (数字)9783030461300

ISBN: (纸本)9783030461294

Texts written by users are often used in investigations of their experiences using a system. When users write about texts based on their own decisions, the texts are a rich context for User eXperience (UX) evaluation of such systems due to the users’ spontaneity. Usually, UX goals are evaluated in users’ texts, including their perception about the usability of the system. An UX analysis from the perspective of the user’s emotional intent and the expression of their personal or social values in the posts has not yet been performed. In this chapter, we analyzed the UX reported on users’ Twitter posts relating to these two perspectives. We identified significant correlations calculated from posts that express a particular level of emotional intention of the user and a certain social or personal value. All levels of emotion had a significant relationship with at least 2 of the 12 values analyzed. Results showed that these relationships from texts written by users are useful to analyze the UX of the posts. © 2020, Springer Nature Switzerland AG.

关键词： Human computer interaction

来源：评论

学校读者我要写书评

暂无评论

A Methodology for Risk Management of Generative AI based Systems 32

A Methodology for Risk Management of Generative AI based Sys...

引用

32nd International Conference on Software, Telecommunications and Computer Networks, SoftCOM 2024

作者： Filho, Raimir Holanda Colares, Daniel University of Fortaleza Postgraduate Program in Applied Informatics Fortaleza Brazil

ISBN: (纸本)9789532901382

This paper addresses cybersecurity challenges in integrating Generative Artificial Intelligence (GenAI) into applications. It proposes a risk analysis approach that focuses on identifying threats and vulnerabilities exploited by malicious actors, which is validated through a case study on prompt injection attacks. The results demonstrated the efficacy of our approach in identifying and quantifying vulnerabilities in Large Language Models (LLMs). © 2024 university of Split, FESB.

关键词： Cyber Security Generative AI Large Language Models Risk Management

来源：评论

学校读者我要写书评

暂无评论

The effect of stereochemical constraints on the radius of gyration of folded proteins

arXiv

引用

arXiv 2025年

作者： Logan, Jack A. Sumner, Jacob Grigas, Alex T. Shattuck, Mark D. O'Hern, Corey S. Department of Mechanical Engineering Yale University New HavenCT06520 United States Graduate Program in Computational Biology & Biomedical Informatics Yale University New HavenCT06520 United States Integrated Graduate Program in Physical and Engineering Biology Yale University New HavenCT06520 United States Benjamin Levich Institute and Physics Department The City College of New York New YorkNY10031 United States Department of Applied Physics Yale University New HavenCT06520 United States Department of Physics Yale University New HavenCT06520 United States

Proteins are composed of linear chains of amino acids that fold into complex three-dimensional structures. A general feature of folded proteins is that they are compact with a radius of gyration Rg(N) ∼ Nν that obeys power-law scaling with the number of amino acids N in each protein and ν ∼ 1/3. In this study, we investigate the internal scaling of the radius of gyration Rg(n) versus the chemical separation n between amino acids for all subchains of length n. We show that for globular proteins Rg(n) ∼ nν1,2 with a larger exponent ν1 > 1/3 for small n and a smaller exponent ν2 g(N) ∝ Nν. To describe this scaling behavior for Rg(n), we carry out folding simulations for a series of coarse-grained models for proteins beginning with the freely-jointed and freely-rotating chain models composed of spherical monomers and varying degrees of stereochemical constraints. We show that a minimal model, which coarse-grains amino acids into a single spherical backbone atom and one variable-sized spherical side-chain atom, and enforces bend- and dihedral-angle constraints, can recapitulate Rg(n) for x-ray crystal structures of globular proteins. In addition, this model predicts the correct average packing fraction and size of the hydrophobic core, which are two key physical features that can be used to distinguish between computational 'decoys' and correctly folded proteins in protein design applications. © 2025, CC BY.

关键词： Spheres

来源：评论

学校读者我要写书评

暂无评论

Comparison of two pro totype-based multicriteria classification methods

Comparison of two pro totype-based multicriteria classificat...

引用

2009 IEEE Symposium on Computational Intelligence in Multi-Criteria Decision-Making, MCDM 2009

作者： Filho, Amaury T. Brasil Pinheiro, Plácido R. Coelho, André L. V. Costa, Nathanael C. Master of Science Program in Applied Informatics University of Fortaleza Fortaleza CE Brazil

ISBN: (纸本)9781424427642

In the present study, we introduce an experimental analysis conducted over two Multicriteria Decision Aid (MCDA) classification methods that have been successfully applied to real world problems. Different from other studies on MCDA classifiers, which put more emphasis on the development of new methods, this work compares the effectiveness of two MCDA nominal classifiers under the same conditions. In such regard, we developed a customized genetic algorithm to calibrate their control parameters automatically under some different sets of reference alternatives, also known as prototypes. Moreover, the experiments we have realized so far, involving different datasets, reveal that there are still some gaps in existing MCDA methods that can lead to an improvement of the methodology for the classification problems. We understand that this sort of empirical assessment is interesting as it reveals how robust/sensitive the MCDA classifiers could be to the choice of cut-off thresholds and prototypes for distinct problems. ©2009 IEEE.

关键词： Classification (of information)

来源：评论

学校读者我要写书评

暂无评论

Applying verbal decision analysis to task allocation in distributed development of software 28

Applying verbal decision analysis to task allocation in dist...

引用

28th International Conference on Software Engineering and Knowledge Engineering, SEKE 2016

作者： Filho, Marum Simão Pinheiro, Plácido R. Albuquerque, Adriano B. Graduate Program in Applied Computer Science University of Fortaleza 7 de Setembro College Fortaleza Brazil Graduate Program in Applied Computer Science University of Fortaleza Fortaleza Brazil

ISBN: (纸本)189170639X

The management of distributed software development projects presents many challenges. One of them happens right at the start of the project and consists of the allocation of tasks between remote teams. When allocating a task to a site, the project manager takes into account several factors such as technical knowledge of staff and proximity to the client. The project manager usually takes this decision in a subjective way. The verbal decision analysis is an approach based on solving problems through multi-criteria qualitative analysis, which means it considers the analysis of subjective criteria. This paper describes the application of verbal decision analysis methodologies ORCLASS and ZAPROS III-i to classify and rank the most relevant factors that the project managers should take into account when allocating tasks in projects of distributed development of software.

关键词： Application programs

来源：评论

学校读者我要写书评

暂无评论

A multicriteria approach to support task allocation in projects of distributed software development

A multicriteria approach to support task allocation in proje...

引用

作者： Simão Filho, Marum Pinheiro, Plácido R. Albuquerque, Adriano B. Simão, Régis P. S. Azevedo, Raimundo S. N. Nunes, Luciano C. Graduate Program in Applied Informatics University of Fortaleza Brazil Information Systems 7 de Setembro University Center Brazil

Organizations are increasingly investing in Distributed Software Development (DSD) over the years. A typical decision-making problem in the distributed scenario consists of deciding which team should be allocated each task. That decision takes into account a relative degree of subjectivity. That setting is suitable for applying Verbal Decision Analysis (VDA). This paper introduces an approach to support the allocation of tasks to distributed units in DSD projects, structured on the hybridisation of methods of Verbal Decision Analysis for classification and rank ordering applied to influencing factors and executing units. Firstly, a review of the literature was conducted aiming to identify the approaches to support the allocation of tasks in DSD contexts. Then, an approach was developed by applying VDA-based methods for classification and ordering. Bibliographic research and the application of surveys with professionals allowed identifying and characterising the main elements that influence task assignment in DSD projects. Afterwards, experiences were carried out in five real-world companies. In the end, the proposed approach has been submitted to the evaluation by the professionals of the participating companies and by some project management experts. The proposed approach comprises a workflow containing responsible actors and descriptions of the activities. Automated tools are also employed in automating the implementation of the approach. After applying the approach in five companies, task assignment recommendations are presented in groups for each company, according to the task type, i.e., requirements, architecture, coding, and testing, ranging from the most to the least preferable office. Results of the experiences and evaluations held during this work present evidence that the proposed approach is flexible, adaptable, and easy to understand and to use. Moreover, it helps to reduce decision subjectivity and to think of new aspects, supporting the task allocatio

关键词： Project management

来源：评论

学校读者我要写书评

暂无评论

A hybrid methodology for tackling the irregular strip packing problem

A hybrid methodology for tackling the irregular strip packin...

引用

11th IFAC Workshop on Intelligent Manufacturing Systems, IMS 2013

作者： Junior, Bonfim A. Pinheiro, Placido R. Saraiva, Rommel D. Graduate Program in Applied Informatics University of Fortaleza Av. Washington Soares 1321 - J30 60.811-905 Fortaleza Brazil

ISBN: (纸本)9783902823335

This paper presents a hybrid approach for tackling the irregular strip packing problem, which requires a set of polygons to be placed within a rectangular object. The methodology includes a meta-heuristic engine (e.g., a genetic algorithm) that determines the order in which polygons are handled by a placement heuristic. In addition, differently from several approaches presented in the literature, we investigate the application of the no-fit polygon as a placement tool for obtaining local optima. The results are further improved by a shrinking algorithm that works within the meta-heuristic component. To assess the potentials of the proposed methodology, computational experiments performed on a set of difficult benchmark instances of the irregular strip packing problem are discussed here for evaluation purposes. © 2013 IFAC.

关键词： Genetic algorithms

来源：评论

学校读者我要写书评

暂无评论

A hybrid methodology for nesting irregular shapes: Case study on a textile industry ?

A hybrid methodology for nesting irregular shapes: Case stud...

引用

6th IFAC/ACM Conference on Management and Control of Production and Logistics, MCPL 2013

作者： Junior, Bonfim A. Pinheiro, Placido R. Saraiva, Rommel D. Graduate Program in Applied Informatics University of Fortaleza Av. Washington Soares 1321-J30 60.811-905 Fortaleza Brazil

The aim of this paper is to describe a hybrid methodology that combines a Genetic Algorithm and a Bottom-Left Greedy procedure for solving the two-dimensional Nesting Problem. The No-Fit Polygon construct is applied for obtaining local optima. Furthermore, a shrinking algorithm is incorporated to the metaheuristic engine to identify good quality solutions. Computational experiments performed on standard benchmark problems, as well as a practical case study developed in a textile industry, are also reported and discussed here in a manner as to testify the potentialities behind the novel approach. © IFAC.

关键词： Textile industry

来源：评论

学校读者我要写书评

暂无评论

A multi-criteria model for planning and fine-tuning distributed Scrum projects

A multi-criteria model for planning and fine-tuning distribu...

引用

6th IEEE International Conference on Global Software Engineering, ICGSE 2011

作者： Almeida, Luis Henrique Albuquerque, Adriano Bessa Pinheiro, Plácido Rogério Graduate Program in Applied Computer Science University of Fortaleza Fortaleza 60811-905 Brazil

ISBN: (纸本)9780769545035

Distributed software development is a fact of life for many projects. It is well established that distance makes difficult to interact and to cooperate effectively. Scrum emphasizes communication, reduces coordination and control overhead;therefore it has enormous potential to help the management of distributed projects and has been increasingly used. Successfully managing the combined use of DSD and Scrum is a complex task and it requires carefully planning. Despite the importance and complexity of this type of problem, there seems to be a lack of reports, in the literature, of models that could support project managers dealing with these decision contexts. This paper presents a multi-criteria decision model for planning and finetuning such project plans. This model was developed using cognitive mapping and MACBETH (Measuring Attractiveness by a Categorical Based Evaluation Technique). The application of the model is demonstrated, followed by conclusion and remarks about future work. © 2011 IEEE.

关键词： Software design

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：