scholarly journals Combining DoV framework and methodological preconceptions to improve student’s electrical circuit solving strategies

Author(s):  
Raoul Sommeillier ◽  
Frédéric Robert

Our research studies about student’s prior knowledge acting as learning difficulties (referred to as preconceptions) in electricity courses at university level led us to define knowledge as the association of two elements: a model and a domain of validity (DoV). This statement is the core of the DoV framework. This framework reveals its powerfulness in the way it helps teachers to map students’ cognitive structures, to identify their preconceptions as well as to derive effective teaching strategies. Quantitative experimentations we carry out indicate a lack of global circuit solving strategy among students. Especially, they highlight the fact that the difficulties encountered by those students in network analysis are not that much relying on the mastering of solving methods but on the method selection process. This lack of solving strategy prevents the students to grasp the domain of validity of the solving methods they master, so to associate the relevant methods with the suitable circuits. This paper depicts how the application of the DoV framework to this problem-solving process reveals to be a great tool to identify and tackle students’ (methodological) preconceptions as well as to formalize, rationalize and simplify complex solving strategies making them easier to explain, teach and learn. 

Author(s):  
Liska Yanti Pane ◽  
Kamid Kamid ◽  
Asrial Asrial

This research aims to describe logical thinking process of a logical-mathematical intelligence student. We employ qualitative method to disclose the subject’s learning process. Data are collected by interview and modified think aloud methods. The results show that subject has capability to find and organize problems and data correctly. Subject describes conditions that are needed to do the steps of problem solving strategy. The steps are done systematically until the end of problem solving process.


2021 ◽  
Vol 13 (9) ◽  
pp. 4877
Author(s):  
Alejandro Vega-Muñoz ◽  
Guido Salazar-Sepúlveda ◽  
Nicolás Contreras-Barraza ◽  
Lorena Araya-Silva

Cruise activities, until 2020, have presented a significant increase in revenue, as well as number of cruises and passengers transported, and it has become a challenge for ports to respond to this demand for services. In response to this, the world’s ports have implemented different governance models. In this context, in this paper, we aim to review the different governance models, as well as port cooperation, competition, and stakeholders. For this purpose, using science metric meta-analysis, an article set is extracted that strictly refers to the governance model of two databases integrated into the Core Collection Web of Science, whose selection process is polished with the PRISMA guidelines, establishing the eligibility criteria of studies using PICOS tool, to which a qualitative meta-analysis is applied. A limited studies set is identified, that includes governance model implementations, private strategies and internalization patterns in the port sector and cruise ships, patterns of port cooperation and governance, governance models in cruise ports, structures and strategies, and changes in the cruise market. Finally, various governance model forms are determined, all documented in the scientific research worldwide, discussing the various components of study topics.


Author(s):  
Herbert A. Simon

In both the GA and GOFAI traditions, invention or design tasks are viewed as instances of problem solving. To invent or design is to describe an object that performs, in a range of environments, some desired function or serves some intended purpose; the process of arriving at the description is a problem-solving process. In problem solving, the desired object is characterized in two different ways. The problem statement or goal statement characterizes it as an object that satisfies certain criteria of structure and/or performance. The problem solution describes in concrete terms an object that satisfies these criteria. The problem statement specifies what needs to be done; the problem solution describes how to do it [9]. This distinction between the desired object and the achieved object, between problem statement and problem solution, is absolutely fundamental to the idea of solving a problem, for it resolves the paradox of Plato's Meno: How do we recognize the solution of a problem unless we already knew it in advance? The simple answer to Plato is that, although the problem statement does not define a solution, it contains the criteria for recognizing a solution, if and when found. Knowing and being able to apply the recognition test is not equivalent to knowing the solution. Being able to determine, for any given electrical circuit, whether it would operate, to a sufficiently good approximation, as a low-pass filter does not imply that one knows a design for a circuit that meets this condition. In asserting that we do not know the solution in advance, we must be careful to state accurately what the problem is. In theorem proving, for example, we may know, to the last detail, the expression we are trying to prove; what we do not know is what proof (what sequence of expressions, each following inferentially from the set of its predecessors) will terminate in the specified one. Wiles knew well the mathematical expression that is Fermat's last theorem; he spent seven years or more finding its proof. In the domain of theorem proving, the proof is the problem solution and the recognition criteria are the tests that determine whether each step in the proof follows from its predecessors and whether the proof terminates in the desired theorem.


2017 ◽  
Vol 21 ◽  
pp. 619-623
Author(s):  
Violeta Herea ◽  
Eduard Antohie

The extent of this field, namely of real estate administration, due to the fact that private property holds the majority compared to public property after 1989, imposed the emergence of profile firms / companies in the field, but also the need to train specialists for this type of activity. Why the real estate administration? Perhaps this question should be the starting point for the reason why we advocate for this type of activity and thus for the training at university level, thus giving it the importance it deserves. The answer to this question is argued by: the capital invested is very small, solvent customers, regular revenues, chances of gains from good to very good, a multilateral activity due to the complexity of administration. On the other hand, this type of activity may be carried out in parallel with the main activity, namely the basic one of each of us. Therefore, many prospective real estate administrators begin to provide services in this area without sacrificing the core business, while performing these along with another activity for another institution. In analysing this issue we invoke the regulations in force which legislate the field which represents the purpose of our analysis. Also, we will present you the advantages of this kind of activity.


2016 ◽  
Vol 51 (3) ◽  
pp. 513-528 ◽  
Author(s):  
Joni Lovenduski

This contribution takes a look back at the supply and demand model of selection and recruitment, developed by Joni Lovenduski and Pippa Norris in Political Recruitment: Gender, Race and Class in the British Parliament (1995). The core understanding of this model was that candidate selection was an interactive process in which both selectors and aspirants affected outcomes that were organized in several sets of institutions. The model illuminates power in particular institutions – British political parties – and was designed to examine the various effects of the selection process. This contribution reflects on the model and puts forward ideas and arguments about what might be done differently, taking into account the theoretical and methodological innovations of the succeeding generation of scholars who have used the model. It also identifies remaining challenges for research on candidate selection and suggests that the supply and demand model is sufficiently flexible that it can still travel across national, system and party boundaries.


2020 ◽  
Vol 9 (1) ◽  
pp. 23
Author(s):  
Ni Made Yuliani

<p>The use of jajan in the masabatan biu ceremony in achi katiga tradition in the village of Tenganan Dauh Tukad Karangasem is closely related to the natural conditions of the area. Considering that the nature is rich with natural resource to be used as a complement in the masabatan biu ceremony. The achi katiga tradition is part of culture. The implementation of the achi katiga tradition contains noble values inherited by the ancestors. These values certainly need to be practiced by the community so that they can be understood and developed by the community. The use of jajan at the masabatan biu ceremony can be used in selection of saye , the communication of this organization helps in the selection process. Selection of Saye is the selection of candidates for the leadership of Sekaa Teruna Dukuh Mengku The uniqueness of the selection of Saye is that not all members can become prospective leaders. So that in this background a problem statement can be drawn, namely what is the shape of the jajan symbol made by roban in the implementation of the Aci katiga Tradition? What is the function of the Achintya Jajan symbol made by roban in the implementation of the Aci katiga Tradition? What is the meaning of the jajan symbol made by roban in the implementation of the Aci katiga Tradition? The three formulations of this problem are dissected using Religious Theory is one of the most complex and<br />evolving elements in various places in the world. According to Koentjaraningrat (1980: 228-229) that if someone does something in the world, then there will be four main elements of religion in general, namely: (1). (2) a system of belief or human images about the shape of the world, nature, the unseen, life, death, etc .; (3) a system of implementation related to the world; and (4) community groups or social units that conceptualize and revive religion and the system of religious ceremonies. The use of Symbol Theory to reveal the meaning of the symbol of the use of jajan in the ceremony of the masabatan biu to the Achi katiga tradition. Etymologically, symbols or symbols are derived from the Greek word “ syim-ballein “ which means throwing together (objects, deeds) openness of ideas. Perception theory is the core of communication, whereas interpretation (interpretation) is the core of perception, which is identical to the decoding in the persepni process of the symbol’s meaning in the use of jajan in the ceremony of the mesabatan biu in the Achi katiga tradition. The method of data have been used is information, interviews, and documentation. Observation of the analyze,<br />observations Interviews are carried out by constructing people, events, activities, organizations, motivations, feelings, etc. that are carried out by two parties, namely the interviewer (interviewer) who asks questions with the person interviewed (interviewed).</p>


Author(s):  
Maree Gosper ◽  
Karen Woo ◽  
Helen Muir ◽  
Christine Dudley ◽  
Kayo Nakazawa

<span>This paper reports on a project involving software selection in the context of a curriculum redesign of a university level Japanese language program. The project aimed to improve learning outcomes, increase flexibility in student access, and increase flexibility in approaches to teaching and learning, through the use of a variety of software packages and digital resources. In doing so, an imperative was to ensure the solutions adopted were manageable within the existing organisational arrangements of the Department and the University. The selection process has led to the development of three instruments which form the CICTO Framework for Software Selection.</span>


2020 ◽  
Vol 29 (5) ◽  
pp. 431-437 ◽  
Author(s):  
Duncan E. Astle ◽  
Sue Fletcher-Watson

Developmental disorders and childhood learning difficulties encompass complex constellations of relative strengths and weaknesses across multiple aspects of learning, cognition, and behavior. Historically, debate in developmental psychology has been focused largely on the existence and nature of core deficits—the shared mechanistic origin from which all observed profiles within a diagnostic category emerge. The pitfalls of this theoretical approach have been articulated multiple times, but reductionist, core-deficit accounts remain remarkably prevalent. They persist because developmental science still follows the methodological template that accompanies core-deficit theories—highly selective samples, case-control designs, and voxel-wise neuroimaging methods. Fully moving beyond “core-deficit” thinking will require more than identifying its theoretical flaws. It will require a wholesale rethink about the way we design, collect, and analyze developmental data.


Author(s):  
R. Giles Harrison ◽  
Maarten H. P. Ambaum ◽  
Michael Lockwood

Cosmic rays modify current flow in the global atmospheric electrical circuit. Charging at horizontal layer cloud edges has been observed to be consistent with global circuit vertical current flow through the cloud, which can modify the properties of small and pure water droplets. Studies have been hampered by the absence of cloud edge observations, hence cloud base height information is investigated here. Cloud base height measured at the Lerwick Observatory, Shetland, UK, is analysed using threshold tests and spectral analysis. The cloud base height distributions for low cloud (cloud base less than 800 m) are found to vary with cosmic ray conditions. Further, 27 day and 1.68 year periodicities characteristic of cosmic ray variations are present, weakly, in the cloud base height data of stratiform clouds, when such periodicities are present in neutron monitor cosmic ray data. These features support the idea of propagation of heliospheric variability into layer clouds, through the global atmospheric electric circuit.


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