Multi-objective integer programming: An improved recursive algorithm

This paper introduces an improved recursive algorithm to generate the set of all nondominated objective vectors for the Multi-Objective Integer Programming (MOIP) problem. We significantly improve the earlier recursive algorithm of \"Ozlen and Azizo\u{g}lu by using the set of already solved subproblems and their solutions to avoid solving a large number of IPs. A numerical example is presented to explain the workings of the algorithm, and we conduct a series of computational experiments to show the savings that can be obtained. As our experiments show, the improvement becomes more significant as the problems grow larger in terms of the number of objectives.Comment: 11 pages, 6 tables; v2: added more details and a computational stud

Optimising a nonlinear utility function in multi-objective integer programming

In this paper we develop an algorithm to optimise a nonlinear utility function of multiple objectives over the integer efficient set. Our approach is based on identifying and updating bounds on the individual objectives as well as the optimal utility value. This is done using already known solutions, linear programming relaxations, utility function inversion, and integer programming. We develop a general optimisation algorithm for use with k objectives, and we illustrate our approach using a tri-objective integer programming problem.Comment: 11 pages, 2 tables; v3: minor revisions, to appear in Journal of Global Optimizatio

Influencing Factors of Science Olympiad Students’ Success

This research aims to identify the main factors affecting the success of science olympiad students who participate in national and international science olympiads. The collected data is analyzed descriptively after conducting a developed survey. Survey was prepared based on twelve variables with three, four or five measuring items. Among six private high schools of Bosna Sema Educational Institutions in four different cities of Bosnia and Herzegovina, a total of 136 science olympiad students participated in the survey. SPSS program was used to analyze data. The results indicate extreme agreement levels for probable factors except slight agreement levels for technology use, supervisor, assessment and student’s self efficacy

Acceptance of Smartphones by Users in BiH Through Extended Technology Acceptance Model 1

The main objective of this research paper is to measure acceptance of Smartphones and empirically identify factors which are crucial influencers for Smartphone acceptance. Technology Acceptance Model (TAM) is extended by adding two additional variables, ―Perceived enjoyment‖ (PE) and ―Security and privacy ‖ (SP). Survey has been prepared based on variables and measuring items retrieved from literature review, and one hundred and forty nine Smartphone users were surveyed. According to results, users of Bosnia and Herzegovina are slightly agreeable when it comes to all variables except security and privacy. This study is important insight not only for companies operating in market of Bosnia and Herzegovina when it comes to factors that influence people to use Smartphones, but also for mobile oriented companies outside of country with potential to enter Bosnian market. Limitations of this work are too general sample with no specific target group of people, and small sample size. Therefore, this work could serve as stimuli for new researchers to do similar research but with improved sample aspects

A contingency approach to knowledge management: Finding the best fit

A contingency perspective of knowledge management recognises the need for a fit between knowledge management solutions (KMS) and decision making contexts which they support. In order to determine the best fit, a field survey was carried out to investigate the impact of two different types of KMS (technical and social) on decision makers' behaviour and performance in different decision contexts (simple and complex). The results provide partial support for the contingency view. As expected, the study identified social KMS as the best fit for complex contexts, based on subjects' superior performance from comparable adoption of both KMS. In contrast, the study identified that both KMS were an equally good fit for simple contexts, based on similar levels of subjects' performance, but social KMS was preferred in terms of adoption. These findings contribute to much needed empirical evidence for research and provide useful guidance for practice. However, their limitations warrant further study. © 2016, IGI Global

Nobel Ekonomi Ödülü Alan Ekonomistler Ve Azgelişmiş Ülkeler

Ekonomi alanında verilen en önemli ödül olan Nobel Ekonomi Ödülü, İsveçli kimyacı ve sanayici olan Alfred NOBEL'in vasiyeti üzerine kurulan Nobel Vakfı tarafından verilmektedir. 1969 yılından itibaren verilmeye başlanan Nobel Ekonomi Ödülünü alan ekonomistlerin çalışmaları incelendiğinde, özellikle, ekonomi bilimini ekonometri, istatistik ve matematik kullanarak geliştirmeye yönelik çalışmaların ödül aldığı görülmektedir. Ayrıca, ödül alan ekonomistlerin tamamı gelişmiş ülkelerin bilimadamlarıdır. Bu da, gelişmekte olan ve azgelişmiş ülke ekonomistlerinin Nobel Ekonomi Ödülünü alamama nedenlerinin incelenmesini gerekli kılmaktadır.ABSTRACT The Nobel Economy Prizes have been awarded since 1969. It is true that most of the Nobel Economy Prizes have gone to studies closely related to econometrics, statistics and mathematics. Almost all the Nobel winning economists are from the developed countries. The poper points ont this fact and examines the causes of why researchers from the developing countries do not have good records regarding the Nobel Economy Prize

Interplay between 15-lipoxygenase-1 and metastasis-associated antigen 1 in the metastatic potential of colorectal cancer

ObjectivesMetastasis-associated antigen 1 (MTA1) is implicated in metastasis while 15-lipoxygenase-1 (15-LOX-1) reduces cell motility, when re-expressed in colorectal cancer (CRC). We aimed to understand any potential interplay between MTA1 and 15-LOX-1 in CRC metastasis