The Experts below are selected from a list of 39 Experts worldwide ranked by ideXlab platform

Zhang Ping - One of the best experts on this subject based on the ideXlab platform.

Cen Yong-ting - One of the best experts on this subject based on the ideXlab platform.

  • Research on Pricing Decision in Manufacturer and Retailer System under the Fuzzy Demand Environment
    Mathematics in Practice and Theory, 2011
    Co-Authors: Cen Yong-ting
    Abstract:

    to advance pricing decision under the fuzzy demand environment,and the optimum solution of pricing decision.To introduce the solving method by means of LR-Style fuzzy number average.To advance computational method of LR-style fuzzy number Formal Operation,thus,pointing out the closeness of LR-style fuzzy number to Formal Operations to the questions,and to advance the stage of the solution of optimum solution and program the computer for practical computing.To provide examples,draw the conclusion:the optimum price is 122.

  • Research on Order Decision in Manufacturer and Retailer System under the Fuzzy Demand Environment
    Fuzzy systems and mathematics, 2010
    Co-Authors: Cen Yong-ting
    Abstract:

    To advance the order amount in manufacturer and retailer system under the fuzzy demand environment,and the optimum solution of trade price in the case of coOperation and non-coOperation. To introduce the solving method by means of LR-Style fuzzy number signed distance. To advance computational method of LR-style fuzzy number Formal Operation,thus,pointing out the closeness of LR-style fuzzy number to Formal Operations to the questions,and to advance the stage of the solution of optimum solution and program the computer for practical computing. To provide examples,draw the conclusion: the optimum order amount is 634.

Mamman Musa - One of the best experts on this subject based on the ideXlab platform.

  • Effect of Piagetian Formal Operations on Mathematics Performance of Senior Secondary Students in Kaduna State, Nigeria
    International Journal of African and Asian Studies, 2013
    Co-Authors: Ibrahim Haruna Usman, Mamman Musa
    Abstract:

    Effect of Formal Operation abilities on mathematics performance of Senior Secondary Students in Kaduna State was investigated. The population of the study was all the SS III students in the state. Their number was 62,565. A sample of 400 students of equal numbers of males and females was drawn, from those offering arts and science subjects. Two paper and pencil tests were developed and used to generate data for analysis, namely, Formal Operations Test (FOT) and Mathematics Performance Test (MPT).The FOT was to assess students’ level of Formal Operations while the MPT was developed to test their performance in mathematics. The results of the study showed that mathematics performance was low. Second, the numbers of students who always use and those who never use Formal Operations abilities were about equal. Third, results in the FOT and MPT were significant and positively correlated. Fourth, there was significant difference between the MPT scores of those students who always use and those who never use the abilities in favour of the former. Implications deduced were that this study confirmed that not all SS students use the abilities always and some never use them. Results of the analysis also indicated that Formal Operations significantly affect students’ performance in mathematics. Those who always use the abilities performed better than those who never use them. This indicated that the widely experienced poor performance in mathematics, especially among senior secondary students, is partly as a result of students not always using Formal Operations abilities. Lastly, findings indicated that knowledge of students’ level of Formal Operations can be used to understand, predict and improve their performance in mathematics. It was recommended that teachers of mathematics should endeavour to diagnose and identify their students’ level of Formal Operations so that they help raise those students who sometimes use and those who never use the abilities to be using them always. It was also recommended that governments should be convening and sponsoring workshops that will evolve programs for accelerating students’ cognitive development for use by teachers in normal mathematics lessons.

Maurice Van Keulen - One of the best experts on this subject based on the ideXlab platform.

  • Formal Operation definition in object oriented databases
    1997
    Co-Authors: Maurice Van Keulen
    Abstract:

    Despite the rapid progress of the previous decades, information system engineering is still not as mature as many other engineering disciplines like electronics. A prominent aspect in which this can be observed is the toolset an engineer has to his disposal for design and development. For example, an electronics engineer can perform advanced analyses on a schematic circuit design to predict the behaviour of the circuit in time. Tools developed for information system engineering have not yet arrived at a comparable level of maturity. One of the causes of the inability to develop such tools is that the specification languages used to decribe a design fall short on several aspects compared to the circuit diagrams: (1) the specifications are in some circumstances susceptible to multiple interpretations, i.e., their meaning is not clear with the mathematical precision needed for advanced analysis, and (2) an overall well-suited combination of modelling primitives has not been found yet resulting in some system properties being described with too much detail, while others cannot be described accurately enough or not at all. Although researchers roughly agree on the concepts needed for modelling in an object-oriented way (this thesis follows the object-oriented the approach), these concepts are not understood well enough to come to a precisely defined common object-oriented modelling language. One of the central topics of the database group at the University of Twente is the specification of database schemas in an object-oriented way. The specification language TM was developed for this purpose. It was given a Formal semantics to achieve an unambiguous meaning for all specifications and to pave the way for the development of advanced tool support in the sense mentioned above. In the IMPRESS project (see Chapter 6), the Database Design Tool (DDT) was developed, a CASE-like specification environment based on TM, which includes a number of verification and validation tools that allow specifications to be analysed for important properties. Experiences with the DDT have revealed that TM can be improved on several aspects. For a large part, these aspects are related to the topic of Operation definition. First, support for more polymorphism is desired, heterogeneous collections and type-dependent queries, in particular. Secondly, a more satisfactory way for specifying update Operations is needed. This thesis reports on an investigation of these aspects of Operation definition in this context. In Chapter 2, we present relevant results of progress made on the subject of objectorientation in both the database and programming language community. In this thesis, we attempt to apply a few promising results related to the aspects of Operation definition mentioned above into one specification language for object-oriented databases. The goal of this is twofold: to contribute to the general understanding of object-orientation at a Formal level, and to investigate the interaction between the various aspects of object-orientation which are often researched in isolation. The first goal is mainly addressed in Chapter 3. It provides a Formal investigation of the fundamental aspects underlying the desired polymorphism: a general form of heterogeneity, run-time type information, and late-binding. This investigation is presented as a step-wise enhancement of a ‘core’ language called CORINE. The eventually resulting ‘most enhanced’ language is called FLORENCE, which is used as a Formal foundation for the subsequent chapters. Chapters 4 and 5 focus on the second goal. The former chapter defines the syntax, typing, and semantics of a language called TAMARA, and the latter provides argumentations for important design decisions to supplement the comments in the preceding chapter. TAMARA is a redefinition of TM that incorporates the desired polymorphism. By defining the semantics of TAMARA in terms of FLORENCE, a similar general form of heterogeneity is supported in combination with advanced support for method overloading and overriding. A striking achievement of this research is the ability to deduce the typing rules of method overloading and overriding from its semantics and the typing rules of FLORENCE (see Section 5.2). TAMARA is also used to study the specification of update Operations. This is investigated on both the level of semantics paying special attention to ambiguity of specifications, and the level of typing. with respect to type-safety of the language (see Section 5.3).

Therese Bouffardbouchard - One of the best experts on this subject based on the ideXlab platform.

  • cognitive monitoring in a joint activity between children and their nonexpert parents on a Formal Operation task
    Learning and Individual Differences, 1992
    Co-Authors: Sylvie Normandeau, Serge Larivee, Richard E Tremblay, Claude Gagnon, Pierre Charlebois, Therese Bouffardbouchard
    Abstract:

    Abstract The present study examined developmental changes of the cognitive monitoring of family members during a joint problem-solving activity. Boys were observed twice, either with a single parent (n = 22) or with both parents (n = 30), over a two-year period. Family units were asked to solve an unfamiliar task consisting of a permutation task adapted on a microcomputer. Results indicated that the involvement of each participant varied. Parents were taking decisions more often than children whereas children were more involved in the execution of the task. Mothers in one-parent families expressed a greater proportion of metacognitive statements than parents in two-parent families although their affective comments were not as extensive as in two-parent families. Although families did not become more strategic in solving the permutation task over time, they made greater use of metacognitive statements and were more controlling of the activity. This was especially the case for mothers in one-parent families. The role of adults' expertise with regard to the development of self- monitoring abilities in children is discussed within a Vygotskyan perspective.