scholarly journals Application of hydrodynamic models in reducing the indeterminacy of the input parameters for underground streams simulation

2007 ◽  
Vol 5 (2) ◽  
pp. 159-175
Author(s):  
Dusko Djuric

The key issue which arises during the preparation of the input data at modeling of all the hydraulic systems is the one of the sufficient and optimal number of input data. Here, the answer to the question has been found by using the existing research in this field, with the application of GROW software package which simulates the two-dimensional streaming of ground water in the aquifer strata. Thus, the subject of this paper is: N Analysis of the required number of measuring points in order to reduce the indeterminacy down to the level where the further increase of the number of measuring points would not result in the higher quality. N Analysis of the input data indeterminacy propagation through the simulation models. The sample used for the analyses is a part of the water resource system in the aquifer of Semberija, Bosnia and Herzegovina, in the surrounding area of the town of Bijeljina. Apart from the separate analysis of aquifer as a source of groundwater, the paper specially addresses the analysis of the dominant influence of individual indeterminacies and potential for their reduction Initially, the existing data were used, and then the additional existing and input data were collected, and afterwards the results were compared. Since each new quality piece of input data contribute to the reduction of the model and system indeterminacy, for the purpose of this study, the additional observations and field research were organized. On the basis of the additional measuring and observation, groundwater flow analysis model was calibrated.

2018 ◽  
Vol 5 (2) ◽  
pp. 38-49
Author(s):  
L. Safitri ◽  
Hermantoro . ◽  
S. Purboseno ◽  
V. Kautsar ◽  
Y. Wijayanti ◽  
...  

The water content distribution in root zone of oil palm crop is substantial for predicted the crop water usage both for productivity and environmental issues. The varying condition of climate, soil properties, crop stage, ground water existing of oil palm cultivation require the specific water balance analysis model which can evidence the precision condition of water content in root zone. The oil palm water balance tool was developed by inputting the data base including climate, soil properties, crop stage, root density and root zone layer as well. The data was generated through the reference vapotranspiration process by Penman Monteith equation, set parameter of van – genuchten and water flow analysis by Richard equation to bring about the output data in hourly time step which consisted of ETo, soil moisture, cumulative drainage flux, cumulative capillary flux and cumulative water content - rainfall in three root zone. The first, second and third root zone were determined variously depend on the type of soil and the crop stage. The model was built based on the data observation on field research conducted in 3 different condition; the type of soil inceptisol free drainage (without capillary), spodosol with no flux bottom and ultisol with groundwater contribution.


2009 ◽  
Vol 13 (5) ◽  
pp. 706-717 ◽  
Author(s):  
Shinichiro Nakamura ◽  
Kenichi Nakajima ◽  
Yoshie Yoshizawa ◽  
Kazuyo Matsubae-Yokoyama ◽  
Tetsuya Nagasaka

2019 ◽  
Vol 18 (1) ◽  
pp. 30-41
Author(s):  
A. M. Gareyev ◽  
I. A. Popelnyuk ◽  
D. M. Stadnik

А method based on comparing oscilloscope patterns of operational parameters with reference curves is one of the most promising methods of diagnosing hydraulic systems among the existing ones. Its implementation does not allow accurate localization of the faulty unit in the system and quantitative estimation of the magnitude of the fault. To eliminate these shortcomings, it is advisable to use simulation models of hydraulic units, taking into account typical faults of a hydraulic system. Their use makes it possible to evaluate the effect of a particular malfunction on the change of dynamic parameters at the stage of mathematical modeling. As a result of the analysis of statistical information and literary sources, characteristic faults of hydraulic systems are identified. Their causes and the impact on the operation of hydraulic units are examined. Simulation models of units taking into account typical faults are described in the Matlab / Simscape software package. They are implemented using a typical hydraulic system as an example. Dynamic characteristics of a hydraulic system in a healthy condition and those of a system with one of the characteristic faults are compared.


2020 ◽  
Vol 4 (1) ◽  
pp. 61-67
Author(s):  
Friska Fitriani Sholekah ◽  
Fitri Nur Mahmudah

The research aims to discuss(1) How planned of the headmaster in an effort to increase self-awareness of school residents regarding the importance of the environment, 2) How to implement planned programs related to efforts to increase self-awareness of school residents, and 3) identify supporting factors in implementation of the program carried out as an effort to increase self-awareness of school residents. The method of research used qualitative method. Subjects of this research consisted of headmaster, subject teachers, and students. Subjects of research is based on determining purposive random sampling technique. Collecting of data is through interviews, observation and documentation. The analyzing of data using the Miles Huberman analysis model with the several stages are collecting of data, data reduction, data presentation and drawing conclusions. The results show that there an increased in self-awareness of school residents about the environment after several programs had been carried out. The vision, mission and regulation of the school are being the one of programs that succeeded in increase awareness of school residents. The implementation program by applying clean fridays, installing CCTVs and coaching by the headmaster and teachers to the students directly. The supporting factors in  implementation of efforts to increase self-awareness of school residents to the environment are the commitment, awareness and desire of school residents to embody the programs that have been implemented. The strategy of headmaster is always monitor the activities of school residents through the CCTVs that have been installed and spot checking directly to be more effective and the results showed increased self-awareness of school residents for enviroment has occurred since last semester.


2021 ◽  
Vol 14 (28) ◽  
pp. 67-78
Author(s):  
Alexandra Presser ◽  
Gilson Braviano ◽  
Eduardo Côrte-Real

There is a noticeable gap in academic studies between comic books and hypermedia. On the one hand, are found several publications on both printed and digital comic books. On the other hand, are publications aimed at media and technologies for content usability for small screen devices. Therefore, this study focuses on the development of comic books for small screen device reading. A parameter guide for the so-called Webtoons was developed, based on theoretical foundation, observation of webcomics in this style on content platforms, and 3 phases of qualitative field research. The research included interviews with comic artists, comic book professionals, and, seeking successive refinement, the guide's presentation to students as educational material.


2019 ◽  
Author(s):  
Mohammad Tohir ◽  
A. Wida Wardani

This study aims to obtained description of the ability of prospective mathematics teachers in applying scientific approaches to learning activities in the classroom. This research is a qualitative descriptive study. The participants research were prospective mathematics teacher (PPL teachers) interns at SMP Negeri 2 Jember. Data collection techniques used were questionnaires, interviews, observation, and the results of supervision at the practical examination. Data analysis techniques in this study using a checklist and flow analysis model of Miles and Huberman. The results showed that: (1) PPL teachers' understanding of the learning model through a scientific approach gained 28.57% in the category is can and as much as 71.43% in the category is quite capable; (2) the ability of PPL teachers in preparing the learning device in accordance with the curriculum structure in 2013 gained as much as 100% in the category is capable; (3) the ability of PPL teachers in implementing the learning activities using scientific approaches gained as much as 57.14% in the category is can and as much as 42.86% in the category is quite capable; (4) the ability of PPL teachers formulate and implement authentic assessment gained 28.57% in the category is can and as much as 71.43% in the category is quite capable; (5) PPL students' response to the teacher during teaching (internship) gained as much as 42.86% in the category is accordance with the characteristics of students as a teacher of mathematics and as much as 57.14% in the category is according to the characteristics of students as a teacher of mathematics. While the barriers experienced by teachers PPL is the lack of experience in implementing the scientific approach to learning, especially on the activities of questioning and reasoning, the allocation of time, and still difficulties in conducting assessments based the Curriculum 2013.


2021 ◽  
Vol 2 (2) ◽  
pp. 149-164
Author(s):  
Faiqotul Isma Azizah ◽  
Hartono Hartono

The Quantum Teaching learning model is a modification of the various interactions that exist in and around the moment in learning. This study aims to find out more about how to apply Quantum Teaching in measuring students' abilities including cognitive, affective and psychomotor aspects. This research method uses qualitative research methods with the type of research field research. Data collection techniques using observation techniques, interviews, and documentation. While the data analysis is a qualitative analysis model of Miles and Huberman and Saldana which consists of data collection, data condensation, data presentation and drawing conclusions. The results of this study are: (1) Implementation of Quantum Teaching in Class V Thematic Learning at MI Mambaul Ulum Kandangrejo cognitive aspects, namely students are able to think more critically and broadly, students are able to do assignments or exercises and can understand learning well, students able to provide questions and answers properly and appropriately. (2) Implementation of Quantum Teaching in Class V Thematic Learning at MI Mambaul Ulum Kandangrejo aspects in the affective aspect, namely: the curiosity of students increases, students become more focused, students' attitudes become more confident and courageous. (3) Implementation of Quantum Teaching in Class V Thematic Learning at MI Mambaul Ulum Kandangrejo psychomotor aspects, namely: students are able to practice well the learning media is provided, students are able to name the names and parts of the circulatory organs, students are able to show the circulatory organs blood using the medium. Keywords: Quantum Teaching; Learning; Madrasah Ibtidaiyah Model pembelajaran Quantum Teaching merupakan pengubahan bermacam-macam interaksi yang ada di dalam dan di sekitar momen dalam pembelajaran. Penelitian ini bertujuan untuk mengetahui lebih dalam bagaimana penerapan Quantum Teaching dalam mengukur kemampuan peserta didik meliputi aspek kognitif, afektif dan psikomotorik. Metode penelitian ini menggunakan metode penelitian kualitatif dengan jenis penelitian Field Research. Teknik pengumpulan data menggunakan teknik observasi, wawancara, dan dokumentasi. Sedangkan analisis data analisis kualitatif model Miles dan Huberman dan Saldana yang terdiri dari pengumpulan data, kondensasi data, penyajian data dan penarikan kesimpulan. Hasil penelitian ini yaitu: (1) Implementasi Quantum Teaching Pada Pembelajaran Tematik Kelas V di MI Mambaul Ulum Kandangrejo aspek kognitif yaitu peserta didik mampu berfikir secara lebih kritis dan luas, peserta didik mampu mengerjakan tugas atau latihan dan dapat memahami pembelajaran dengan baik, peserta didik mampu memberikan pertanyaan dan jawaban dengan baik dan sesuai. (2) Implementasi Quantum Teaching Pada Pembelajaran Tematik Kelas V di MI Mambaul Ulum Kandangrejo aspek dalam aspek afektif yaitu: rasa ingin tahu peserta didik meningkat, peserta didik menjadi lebih fokus, sikap peserta didik semakin percaya diri dan berani. (3) Implementasi Quantum Teaching Pada Pembelajaran Tematik Kelas V di MI Mambaul Ulum Kandangrejo aspek dalam aspek psikomotorik yaitu: peserta didik mampu mempraktikkan dengan baik media pembelajaran disediakan, peserta didik mampu menyebutkan nama dan bagian organ peredaran darah, peserta didik mampu menunjukkan bagian organ peredaran darah dengan menggunakan media. Kata Kunci: Quantum Teaching; Pembalajaran; Madrasah Ibtidaiyah


2020 ◽  
Vol 2 (2) ◽  
pp. 156-170
Author(s):  
Firmansyah Firmansyah

This research was conducted to determine the effectiveness of the implementation of the mentoring Al-Islam program at Universitas Islam OganKomeringIlir (UNISKI) Kayuagung which has been running so far, the implementation of the religious practice of students of UNISKI Kayuagung, and what effect the implementation of the mentoring Al-Islam program has on the implementation of the student's religious practice. This research is a descriptive field research with a quantitative approach. The data sources were students participating in the mentoring Al-Islam and the management of P5I UNISKI Kayuagung. Data collection is done using observation techniques, questionnaires, interviews, and documentation. The data analysis is done through descriptive statistical techniques. The results of the data analysis showed that the effectiveness of the implementation of the mentoring Al-Islam program at UNISKI Kayuagung based on the response data of 284 respondents to the research questionnaire using the one-sample t-test formula = 173,433> price of the table, both at the error level ( ) 5% = 1,645 or  1% = 2,362. Thus, the Ha submitted can be accepted. Meanwhile, the value of students' religious practice, using the t-test formula of one sample, the price of t arithmetic = 156.8> t table 5% = 1.645 and 1% = 2.362. The price of t arithmetic falls on the acceptance of Ha, so Ha is accepted and H0 is rejected. The statistical calculation using the product moment correlation formula shows that the application of the mentoring Al-Islam program has a positive and significant effect of 0.996 with a "very strong" relationship level on the religious practice of students of UNISKI Kayuagung.


2021 ◽  
Author(s):  
◽  
Krunoslav Puškar

This thesis deals with the analysis and description of the historical and contemporary anthroponymy of the Kalnik area of the Prigorje region on the basis of both archival and field research carried out throughout a longer period of time. Since there has not been any extensive onomastic reasearch in the very area to date, our goal was to determine the influence of linguistic and extralinguistic changes in the reaserched onomastic categories. The introduction of this thesis provides the geographical, sociohistorical, demographical and linguistic context of the researched area, whereas the subsequent chapters provide a list and analysis of confirmed first names, personal and family nicknames, as well as family names of the reaserched area. First names were researched during nine time periods with a duration of five years, beginning from 1802 and ending in 2014. Because of a wide researched area, we limited our research on the anthroponymic repertoire of the city of Križevci, in which 3020 first names (1579 male and 1441 female names) were confirmed. In the 19th century, during five analysed time periods, 1519 first names were confirmed, out of which 814 male and 705 female names, which were mostly simple based on their structure (91.64%). Concerning the provenance of the first names, we established that almost all names were either Christian names or translated Christian names and that national names occur very rarely and sporadically, only in the second half of the 19th century. By comparison, in the 20th and 21st century, during the last four time periods, 1501 first names have been confirmed, out of which 765 were male and 736 female names. Concerning their structure, they turned out to be mostly compound first names in the 1946- 1950 time period (55.69%), whereas in the 2010-2014 time period they turned out to be predominantly single (97.02%). Concerning their provenance, in the 1946-1950 time period 48.39% of male and 57.58% of female national names were confirmed, whereas in the last time period male national names amount to 4.05%, and female national names to only 1.27%. Personal nicknames are a special anthroponymic category which has not been researched in the Kalnik area. Having limited our field research on 13 places throughout the area, we confirmed 288 real personal nicknames, 245 male and 43 female nicknames, of mostly simple structure (95.14%), which are still mostly used in oral and informal communication. The motivation behind the nicknames has faithfully shown us the extralinguistic reality of the researched area. The most frequent motivational group of nicknames is the one of unknown motivation (23.96%), while the other confirmed groups are nicknames motivated by a first name (12,15%), a physical characteristic of the owner (12.15%), another characteristic of the owner (11,81%), a specific word used by the owner (8.33%), an animal (6.94%), a family name (6.60%), an occupation (6.25%), an ethnonym or toponym (4.51%), a family or social role (2.78%), a professional designation (1.38%), food (1.04%), a name for a plant (1.04%), a subject (0.69%), and another nickname (0.35%). The high frequency of nicknames of unknown motivation shows us the importance of future research of this anthroponymic category because, due to the passage of time, it is difficult to determine the real motivation of every nickname. We came to the same conclusion during our research of family nicknames, another specific anthroponymic category, still quite present in the Kalnik area. Having limited our field research on 12 places throughout the wide researched area, we managed to confirm 173 real family nicknames, whose designated motivational groups provided us with important sociolinguistic pieces of information. Concerning their structure, the majority of family nicknames turned out to be simple (N = 129), whereas concerning their motivation, the majority of family nicknames were of unknown motivation (N = 33). Other motivational groups were the following: a first name (N = 27), an occupation (N = 27), a family name (N = 25), a personal nickname (N = 22), a certain characteristic (N = 13), an ethnonym (N = 10), a toponym (N = 6), a certain subject (N = 6), and an animal (N = 4). All these mentioned different anthroponymic categories (first names, personal and family nicknames) can be confirmed profusely in the last anthroponymic category researched and analysed in this thesis – family names. Having employed the criterion of their minimum continuity of 100 years in the researched area, we have managed to confirm 1360 family names with centuries old continuity, since the 14th century to this very day. With this criterion we also managed to reduce a significant number of over 3000 family names with mostly no continuity, as well as to confirm those last names which had left their trace in the researched area. Of course, not all family names confirmed by this criterion are necessarily connected to the researched area, but are only detected in it. Out of 1360 confirmed family names, we succeeded in determining 189 family names which occur exclusively or mostly in the researched area, 100 family names which do not occur in contemporary anthroponymy of the area, and 97 family names which could also become extinguished in near future. Concerning their structure, the majority of all family names occur without a suffix (N = 681). All the confirmed family names were analysed according to their structure and motivation and listed in our Lexicon of family names at the end of this very thesis.


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