The minimization problem in the conditions of the minimum criteria drift and simplex methods its decisions

2020 ◽  
Vol 138 (2) ◽  
pp. 787-793
Author(s):  
B.B. Orazbayev ◽  
◽  
А.А. Tanirbergenova ◽  
A.G. Kuznetsov ◽  
B.A. Serimbetov ◽  
...  
Keyword(s):  
Minimization Problem ◽  
Simplex Methods ◽  
Minimum Criteria

PENERAPAN MODEL PEMBELAJARAN KOOPERATIF TIPE TEAM GAMES TOURNAMENT (TGT) UNTUK MENINGKATKAN HASIL BELAJAR IPS SISWA KELAS IVC SEKOLAH DASAR NEGERI 108 PEKANBARU

2014 ◽  
Vol 3 (1) ◽  
pp. 40
Author(s):  
Lazim. N ◽  
Zulkifli ' ◽  
Rima '
Keyword(s):  
Cooperative Learning ◽  
Social Science ◽  
Learning Outcomes ◽  
Teaching And Learning ◽  
Mathematics Learning ◽  
Average Score ◽  
Team Games ◽  
Social Science Study ◽  
Minimum Criteria ◽  
Daily Test

The problem on this research was that the low score of students’ learning on social science study. There werestill a lot of students that did not understand basic concepts and tended to memorize examples. It was showed by58,07% from 31 students achieving minimum criteria completeness (KKM) from students’ test score in IVCclass of SDN 108 Pekanbaru for Koperasi subject. The students’ average score was 62,4, and the KKM stated byschool was 68. Based on this problem it was needed to do an action research using cooperative learning modelsTeams Games Tournaments (TGT) type. This research aims to know whether the implementation of cooperativelearning models Teams Games Tournaments (TGT) type can improve students’ social science learningoutcomes at IVC class of SDN 108 Pekanbaru in 2013/2014 with 31students. This research was done in twocycles. First cycle consists of three meetings with one daily test and first tournament, and cycle II consists ofthree meetings with one daily test and second tournament. Instruments to collect data in this research areteacher’s observation sheets, students’ observation sheet, and tests. By implementing using cooperative learningmodels Teams Games Tournaments (TGT) type can improve students’ mathematics learning outcomes.Percentage of completeness in basic score was 54,8% (62,40 in average), and it changed into 77,4% (75,6 inaverage) in cycle I and 87,1% (81,1 in average) in cycle II. Percentage of teacher’ activity in cycle I was 81,9%and 92,3% in cycle II. Then percentage of students’ activity in cycle I was 75,4% and 92,2% in cycle II. Fromthose data it proves that the implementation of cooperative learning models Teams Games Tournaments (TGT)type can improve students’ learning outcomes at IVC class of SDN 108 Pekanbaru.Key Words : cooperative teaching and learning model, Teams Games Tournaments (TGT),learning outcomes

PENGEMBANGAN BAHAN AJAR TEKS DRAMA BERDASARKAN PENGALAMAN PENGARANG

2019 ◽  
Vol 8 (2) ◽  
Author(s):  
Didin Khaerudin ◽  
Suherli Kusmana ◽  
Iyay Robia Khaerudin
Keyword(s):  
Personal Experience ◽  
Teaching Materials ◽  
Learning Skills ◽  
Student Activities ◽  
Development Method ◽  
Average Value ◽  
Surrounding Environment ◽  
Basic Competencies ◽  
Materials Used ◽  
Minimum Criteria

Research conducted to develop drama text teaching materials based on the experience of the author of the drama script aims to make it easier for students to understand drama text material. In addition, based on the author's experience students are expected to emulate the author's creative process in writing a paper. The research method used in this research is the research and development method. Based on the results of the interview it can be concluded that the ability to write drama is determined based on mastery of the elements of drama and the ability to develop stories based on the author's experience. The process of writing drama is done in several steps: (1) searching for ideas based on personal experience, other people, or the surrounding environment; (2) processing ideas to find plots (characters), characters or characters that vary with their inner conflicts, settings and dialogues, interesting conflicts, and messages to be conveyed; (3) starts the process of writing drama with stages and elements of drama; (4) revision of drama products. Teaching material developed is presented from basic competencies of knowledge and basic competencies of learning skills. Based on experiments on developed teaching materials it is known that the average value of the ability to write plays gets a score exceeding the minimum criteria, so that the teaching materials used are effective. Based on observations it is known that teaching materials can help students in learning and student activities become more independent, and active.

THE APPLICATION OF PREVIEW, READ, WRITE, AND RECITE (PRWR) METHOD TO IMPROVE STUDENT’S ACHIEVEMENT IN READING RECOUNT TEXT

2014 ◽  
Vol 3 (2) ◽  
Author(s):  
Rahmat Nasution And Rahmah
Keyword(s):  
Secondary Data ◽  
Analysis Data ◽  
Primary Data ◽  
Average Score ◽  
First Year ◽  
Generic Structure ◽  
The Subject ◽  
Minimum Criteria ◽  
Main Ideas ◽  
Orientation Test

The objective of this research is to find out whether the application Preview, Read,Write, and Recite (PRWR) method improve student’s achievement in readingrecount text. This research applied classroom action research model. This studywas done in six meetings. The subject of this study was first year of SMAN 1Delitua. Primary data were collected by giving 20 questions of multiple-choicetest, the aspects contained in the tests focused on generic structure, main ideas,factual information, and Secondary data were collected by (interview, observationsheet, and questionnaire sheet. Based on analysis data, it was found that thestudent’s achievement improved. It could be seen from the comparison of result inthe orientation test and the cycle test I and II. There were only 9 students who hadpassed minimum criteria KKM in orientation test (75). The improvement showedthat in cycle I and II, based on the total average score it was 16 (42,4%) up to 26(78,7%) in cycle II, The secondary data gathered from interview, observationsheet, and questionnaire sheet, showed that students’ expression and enthusiasticalso improved. Thus, it was found that the applications of Preview, Read, Write,and Recite (PRWR) method in process of teaching improved students’achievement in reading recount text. It is suggested that English teachers applyPRWR method in teaching reading recount text.

An Augmented Iteratively Re-weighted and Refined Least Squares Method for lp Minimization Problem in Inverse Modeling of Potential Field Magnetic Data

2020 ◽  
Vol 1 (3) ◽  
Author(s):  
Maysam Abedi
Keyword(s):  
Magnetic Field ◽  
Magnetic Susceptibility ◽  
Least Squares ◽  
Minimization Problem ◽  
Potential Field ◽  
Field Data ◽  
Least Squares Method ◽  
Porphyry Copper ◽  
Magnetic Data ◽  
Magnetic Field Data

The presented work examines application of an Augmented Iteratively Re-weighted and Refined Least Squares method (AIRRLS) to construct a 3D magnetic susceptibility property from potential field magnetic anomalies. This algorithm replaces an lp minimization problem by a sequence of weighted linear systems in which the retrieved magnetic susceptibility model is successively converged to an optimum solution, while the regularization parameter is the stopping iteration numbers. To avoid the natural tendency of causative magnetic sources to concentrate at shallow depth, a prior depth weighting function is incorporated in the original formulation of the objective function. The speed of lp minimization problem is increased by inserting a pre-conditioner conjugate gradient method (PCCG) to solve the central system of equation in cases of large scale magnetic field data. It is assumed that there is no remanent magnetization since this study focuses on inversion of a geological structure with low magnetic susceptibility property. The method is applied on a multi-source noise-corrupted synthetic magnetic field data to demonstrate its suitability for 3D inversion, and then is applied to a real data pertaining to a geologically plausible porphyry copper unit.  The real case study located in  Semnan province of  Iran  consists  of  an arc-shaped  porphyry  andesite  covered  by  sedimentary  units  which  may  have  potential  of  mineral  occurrences, especially  porphyry copper. It is demonstrated that such structure extends down at depth, and consequently exploratory drilling is highly recommended for acquiring more pieces of information about its potential for ore-bearing mineralization.

Analgesic Efficacy of Dextropropoxyphene and Dextropropoxyphene-containing Combinations: a Review

1984 ◽  
Vol 3 (1_suppl) ◽  
pp. 191s-220S ◽  
Author(s):  
W.T. Beaver
Keyword(s):  
Clinical Trial ◽  
Analgesic Efficacy ◽  
Controlled Clinical Trial ◽  
Controlled Clinical Trials ◽  
Congressional Hearings ◽  
Clinical Assay ◽  
The Subject ◽  
Minimum Criteria ◽  
Oral Doses ◽  
Mild Analgesics

Twenty years ago, as part of a review of the clinical pharmacology of mild analgesics (Beaver, 1965, 1966), I evaluated reports of those analgesic trials of dextropropoxyphene that appeared to satisfy the minimum methodologic requirements for a controlled clinical trial of analgesic efficacy. On reviewing reports of studies that have been published since then, I find little need to modify my evaluation of the efficacy of dextropropoxyphene that appeared in 1966, at least in respect to the effect of single oral doses: In summary, dextropropoxyphene (hydrochloride) is a mild oral analgesic which has proven superior to placebo in doses of 65 mg or more but which is of questionable efficacy in doses lower than 65 mg. The drug is definitely less potent than codeine: the best available estimates of the relative potency of the two drugs indicating that dextropropoxyphene is approximately 1/2-2/3 as potent. Likewise, dextropropoxyphene in 32-65 mg doses is certainly no more, and possibly less, effective than the usually used doses of aspirin or A.P.C. (aspirin/phenacetin/caffeine). In the interim, the efficacy of dextropropoxyphene has been the subject of a number of other critical reviews (Miller et al., 1970; Miller, 1977), commentaries (Kiplinger & Nickander, 1971; Lasagna, 1976), and even congressional hearings (Beaver, 1979; Moertel, 1979). More importantly, new controlled clinical trials involving dextropropoxyphene hydrochloride or napsylate have been reported, and some of these use more sophisticated design and analysis than those available in 1966. I will therefore discuss the results of those newer studies of apparently suitable scientific design that meet at least the minimum criteria for a valid clinical assay of analgesic activity (Beaver, 1965; Houde et al., 1965,1966; Wallenstein & Houde, 1975; Beaver, 1983), and I will comment on only a few of the studies included in my previous review (Beaver, 1966).

scholarly journals Optimal Energy Beamforming to Minimize Transmit Power in a Multi-Antenna Wireless Powered Communication Network

Electronics ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 509
Author(s):  
Iqra Hameed ◽  
Pham-Viet Tuan ◽  
Mario R. Camana ◽  
Insoo Koo
Keyword(s):  
Communication Network ◽  
Minimization Problem ◽  
Time Allocation ◽  
Access Point ◽  
Power Minimization ◽  
Transmit Power ◽  
Optimal Energy ◽  
Single Antenna ◽  
Information Signal ◽  
Energy Beamforming

In this paper, we study the transmit power minimization problem with optimal energy beamforming in a multi-antenna wireless powered communication network (WPCN). The considered network consists of one hybrid access point (H-AP) with multiple antennae and multiple users with a single antenna each. The H-AP broadcasts an energy signal on the downlink, using energy beamforming to enhance the efficiency of the transmit energy. In this paper, we jointly optimize the downlink time allocation for wireless energy transfer (WET), the uplink time allocation for each user to send a wireless information signal to the H-AP, the power allocation to each user on the uplink, and the downlink energy beamforming vectors while controlling the transmit power at the H-AP. It is challenging to solve this non-convex complex optimization problem because it is numerically intractable and involves high computational complexity. We exploit a sequential parametric convex approximation (SPCA)-based iterative method, and propose optimal and sub-optimal solutions for the transmit power minimization problem. All the proposed schemes are verified by numerical simulations. Through the simulation results, we present the performance of the proposed schemes based on the effect of the number of transmit antennae and the number of users in the proposed WPCN. Through the performance evaluation, we show that the SPCA-based joint optimization solution performance is superior to other solutions.

scholarly journals A Projected Forward-Backward Algorithm for Constrained Minimization with Applications to Image Inpainting

Mathematics ◽  
2021 ◽  
Vol 9 (8) ◽  
pp. 890
Author(s):  
Suthep Suantai ◽  
Kunrada Kankam ◽  
Prasit Cholamjiak
Keyword(s):  
Image Processing ◽  
Minimization Problem ◽  
Convex Functions ◽  
Lower Semicontinuous ◽  
Image Inpainting ◽  
Constrained Minimization ◽  
Convex Minimization Problem ◽  
Mild Conditions ◽  
Constrained Minimization Problem ◽  
Weak Convergence Theorem

In this research, we study the convex minimization problem in the form of the sum of two proper, lower-semicontinuous, and convex functions. We introduce a new projected forward-backward algorithm using linesearch and inertial techniques. We then establish a weak convergence theorem under mild conditions. It is known that image processing such as inpainting problems can be modeled as the constrained minimization problem of the sum of convex functions. In this connection, we aim to apply the suggested method for solving image inpainting. We also give some comparisons to other methods in the literature. It is shown that the proposed algorithm outperforms others in terms of iterations. Finally, we give an analysis on parameters that are assumed in our hypothesis.

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