Ontological Rules for UML-Based Conceptual Modeling

Author(s):  
Shan Lu ◽  
Jeffrey Parsons

UML is used as a language for object-oriented software design, and as a language for conceptual modeling of applications domains. Given the differences between these purposes, UML’s origins in software engineering might limit its appropriateness for conceptual modeling. In this context, Evermann and Wand have proposed a set of well-defined ontological rules to constrain the construction of UML diagrams to reflect underlying ontological assumptions about the real world. The authors extend their work using a design research approach that examines these rules by studying the consequences of integrating them into a UML CASE tool. The paper demonstrates how design insights from incorporating theory-based modeling rules in a software artifact can be used to shed light on the rules themselves. In particular, the authors distinguish four categories of rules for implementation purposes, reflecting the relative importance of different rules and the degree of flexibility available in enforcing them. They propose distinct implementation strategies that correspond to these four rule categories and identify some redundant rules as well as some rules that cannot be implemented without changing the UML specification. The rules are implemented in an open-source UML CASE tool.

Author(s):  
Shan Lu ◽  
Jeffrey Parsons

UML is used as a language for object-oriented software design, and as a language for conceptual modeling of applications domains. Given the differences between these purposes, UML’s origins in software engineering might limit its appropriateness for conceptual modeling. In this context, Evermann and Wand have proposed a set of well-defined ontological rules to constrain the construction of UML diagrams to reflect underlying ontological assumptions about the real world. The authors extend their work using a design research approach that examines these rules by studying the consequences of integrating them into a UML CASE tool. The paper demonstrates how design insights from incorporating theory-based modeling rules in a software artifact can be used to shed light on the rules themselves. In particular, the authors distinguish four categories of rules for implementation purposes, reflecting the relative importance of different rules and the degree of flexibility available in enforcing them. They propose distinct implementation strategies that correspond to these four rule categories and identify some redundant rules as well as some rules that cannot be implemented without changing the UML specification. The rules are implemented in an open-source UML CASE tool.


Author(s):  
Varvara Lalioti ◽  
Christos Koutsampelas

Abstract This exploratory paper utilises a comparative research approach to shed light upon the developmental trajectories of the Greek and Cypriot guaranteed minimum income (GMI) schemes. Our analysis indicates that, despite similarities (e.g. in the emergence of the two schemes, as part of the extensive reforms imposed during the financial crisis on the Greek and Cypriot welfare systems), there are also significant differences. These mainly relate to implementation and, ultimately, the “success” of the two schemes in attaining their declared goals. Moreover, we argue that the developmental paths followed by the Greek and Cypriot GMI schemes should be interpreted in the light of key variables (“functionalist,” “political” and “institutional”), often used to explain the establishment and further evolution of such schemes. Within this context, the relatively “superior” performance of the Cypriot GMI, compared with the Greek scheme, is largely attributed to factors such as government effectiveness and political stability.


Author(s):  
V. Logan Kennedy ◽  
Micaela Collins ◽  
Mark H. Yudin ◽  
Lena Serghides ◽  
Sharon Walmsley ◽  
...  

Data are lacking on factors that may impact conception-related decision-making among individuals living with HIV. This study’s aim was to shed light on these considerations. Participants were invited to complete a survey on preconception considerations. A rank-ordered logit model was fit to estimate the relative importance of listed consideration factors; the interaction of HIV status and the factors was assessed. Fifty-nine participants living with HIV and 18 partners (11 HIV-negative participants and 7 living with HIV) were included. Risk of vertical and horizontal HIV transmission and the effect of antiretroviral therapy on the fetus were the top considerations. However, individuals living with HIV prioritized vertical transmission, whereas HIV-negative participants prioritized horizontal transmission. Other factors of importance were probability of conception, stress of trying to conceive, cost associated with fertility clinics, and stigma associated with certain conception methods. This study builds our understanding of the preconception considerations for people living with HIV.


2020 ◽  
Vol 12 (10) ◽  
pp. 4002
Author(s):  
Heesup Han ◽  
Soyeun Lee ◽  
Bo Meng ◽  
Bee-Lia Chua ◽  
Hyungseo Bobby Ryu

Volunteer tourism is a vital formation of altruistic and sustainable tourism. This research is aimed to empirically find the relative importance of the motivation factors and the motivation realization factors for young tourists participating in the global volunteer tourism programs. The differences in the study variables across continents, gender, and frequency of participation were also scrutinized. A quantitative research approach that utilized the survey method was employed. The outcomes showed that personal development was the most vital motivator for global volunteer tourism. On the other hand, the young tourists felt that they most realized the factor of a new experience through their recent international volunteer tourism experience. The motivation factors and the motivation realization factors were consistent across the continents. Furthermore, the mean differences in the motivations, the motivations’ realization, satisfaction, and the behavioral intentions were revealed to be non-significant for the genders and the frequency of volunteer participation. By grasping the young volunteer tourists’ motivations and the experience evaluations, the volunteer programs can be advanced in consonance with their necessities and demands, which enhance the volunteer tourism experience.


2021 ◽  
Vol 10 (2) ◽  
pp. 316-335
Author(s):  
Shikha Vyas-Doorgapersad ◽  
◽  
Mervis Chiware ◽  

Any performance management (PM) practice implemented by an organisation has a direct impact on organisational performance and development; this paper therefore discusses challenges based on primary and secondary research findings, with the aim to explore how these findings correlate with how the successful implementation of PM practices is perceived and applied in the Ministry of Health and Child Care (MOHCC) in Zimbabwe. A qualitative research approach was used to collect data. The findings confirm that the implementation of PM has been marred by various challenges, which have, in turn, greatly affected performance results. Challenges identified by this study were, and continue to be, experienced at different levels of PM implementation strategies (e.g., at the formulation stage versus the implementation stage), and hence may hinder the effective implementation of PM practices in the MOHCC. The paper offers recommendations for consideration at political, policy, organisational, departmental, individual, and stakeholder levels.


2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Merve Engin ◽  
Sinan Sönmez ◽  
Mustafa Batuhan Kurt

Purpose The purpose of this paper is to investigate the influences of fibre lengths and a given range of paper grammages on the fundamental properties of unprinted and printed papers by using mineral oil-based offset printing inks and also evaluate these results in terms of printing and tensile characteristics. Design/methodology/approach A design research approach has been based on the production of various laboratory handmade papers and their printing process with mineral oil-based offset printing inks. The analysis of mechanical and structural tests results of the unprinted and the printed papers have been evaluated. Findings This study is confirmed that the mineral oil-based offset printing inks can be easily applied to the surface of papers having different grammages and pulp contents. An increase was observed in the tensile index values of the papers with the printing process, and these increases were more evident (about 80%) particularly in low grammage papers having high short fibre content. Originality/value The originality of this work is based on understanding and comparing the effects of grammage and the effect of pulp contents (having long and short fibre) on tensile characteristics of printed and unprinted handsheets.


Author(s):  
Caroline M. Crawford ◽  
Ruth Gannon Cook

The contextual backdrop of the problem and goal of the study are based within the framework that the researchers wanted to be sure that the courses were unique in their appropriateness to their respective cultures; but they also wanted to see if the course adaptations provided cultural values and perspectives that were fairly consistent and appropriate across cultures and nations. The methodology is qualitative in nature, specifically focused upon development design research and narrative inquiry. The findings suggest that there were several levels of concern: learner concerns; instructional design or teaching concerns; management and organizational concerns; and, technology concerns. This study has addressed the question “what lessons could be learned from semiotic and philosophical instructional imperatives inclusion within e-learning environments?” As such, the interpretation of the findings of the study shed light on the importance of simple mediation tools, such as signs, symbols, and stories. The implications of the findings indicate that more research could shed light on how to help students feel comfortable enough to follow through and complete their e-learning courses. In viewing best practices for e-learning, students’ existent knowledge can be bridged with what they need to know by using a variety of the semiotic tools discussed in this study.


Sign in / Sign up

Export Citation Format

Share Document