Pengaruh Model Pembelajaran Tutor Sebaya terhadap Kemampuan Analitis Matematis dan Pemecahan Masalah Mahasiswa

Penelitian bertujuan untuk mengetahui pengaruh model pembelajaran tutor sebaya terhadap kemampuan analitis matematis dan pemecahan masalah. Penelitian ini merupakan <em>jenis</em> penelitian <em>Quasi</em> <em>Experiment</em> <em>Design</em> dengan rancangan penelitian faktorial 2X2. Sampel dalam penelitian ini adalah Mahasiwa Jurusan Pendidikan Matematika semester 4 kelas D dan kelas E UIN Raden Intan Lampung. Teknik pengambilan sampel yang digunakan adalah teknik acak kelas. Teknik pengumpulan data dalam penelitian ini yaitu tes, wawancara dan observasi. Uji normalitas dilakukan sebelum uji hipotesis penelitian. Pengujian hipotesis dalam penelitian ini menggunakan <em>Multivariate Analysis of Variance </em>(Manova). Hasil pengujian hipotesis diperoleh signifikansi &lt;0.05 yang menunjukan bahwa terdapat pengaruh pada kemampuan analitis matematis dan kemampuan pemecahan masalah yang diberikan model pembelajaran tutor sebaya daripada pembelajaran konvensional. Oleh karena itu, terdapat pengaruh model pembelajaran tutor sebaya terhadap kemampuan analitis matematis dan kemampuan pemecahan masalah pada mahasiswa UIN Raden Intan Lampung.

Improving motivation and science process skills through a mobile laboratory-based learning model

The COVID-19 pandemic has affected all sectors of life, including the education sector. Physics learning activities, especially practicum activities, which so far have been very dependent on laboratory space-based activities, are very disturbed. This study aims to develop students' motivation and science process skills (SPS) during the pandemic. The sample of this study was 3 groups consisting of 90 students from 2 universities in the province of Lampung, Indonesia. The data obtained were analysed using the multivariate analysis of variance technique. The results showed that mobile laboratory-based learning proved effective in developing students' motivation and SPS. Therefore, experimental/mobile laboratory activities based on analytical videos obtained from surrounding physical phenomena can be an alternative for physics learning activities, especially in the current era of distance learning. Keywords: Mobile laboratory, motivation, science process skills.

Do Institutions Matter in Student Engagement? A Comparison in Engagement Between Two Universities in Different Contexts

Academic engagement has been studied for several years because of its influence on student attrition. According to Tinto, engagement is the most important predictor for student dropout, which makes it relevant to understand how the environment influences engagement. Yet very few studies have addressed this relationship outside higher income countries. The results of a 2 × 2 factorial multivariate analysis of variance (MANOVA) suggest significant differences in engagement means between students from one American and one Bolivian university.

The shape of creaminess: consumers expected and perceived rounded chocolates as creamier than squared

PurposeResearch on cross-modal sensory interactions has shown that visual aspects of food can influence consumer's expectation and perception of taste, mouthfeel and liking. This paper aims to investigate the effects of a rounded (“bouba”) and a squared (“kiki”) shape on expected and perceived sweetness, bitterness, creaminess and liking of chocolates.Design/methodology/approachBrazilian consumers (N = 230) divided into two groups of 115 individuals each evaluated five chocolates containing 30, 40, 50, 60 and 70% of cocoa. One of the groups evaluated all formulations in the rounded shape and the other in the squared shape. Results were analysed with mixed multivariate analysis of variance (mixed-MANOVA) between shapes, repeated-measures MANOVA between pre- and post-tasting and Pearson's correlation analysis was performed between liking ratings and sweetness, bitterness and creaminess confirmation/disconfirmation.FindingsThe study found significant effects (p < 0.05) of shape on expected and perceived creaminess but not on other attributes; of cocoa percentage (30, 40, 50, 60 and 70%) on all four attributes; and time (pre- and post-tasting) on sweetness, bitterness and liking but not creaminess. Finally, it found significant negative correlations between the creaminess difference indices and the liking ratings for the 30, 50 and 60% chocolates.Originality/valueThis study reports that consumers may expect and perceive chocolates as creamier in a rounded shape than in an angular shape and that if the expectation of creaminess is not confirmed by sensory perception, acceptability may be negatively affected.

Analyzing Service Quality and Satisfaction by Multivariate Analysis of Variance

Due to the market openness for the competitive tobacco and liquor market, Taiwan Tobacco and Liquor Corporation has to pay attention to service quality and customer satisfaction more than before for its retailers in order to maintain its marketplace and even increase its sales. In this research, a case study at South Branch Office in Taichung City, Taiwan is conducted with the effective sample of size of 178 retailing customers through phone purchase by multivariate analysis of variance. The results show that Item 20 has the lowest satisfaction and is the only item less than the value of 3 in a 5-point Likert scale. A platform for retailers to order goods from the internet should be placed in the highest priority. In addition, the age group of 36-45 years old perceived the lowest satisfaction on Item 16, which should be the focal point. Moreover, the other focal point is that the retailers purchasing tobacco through phone purchase has the second lowest satisfaction on Item 17. The management needs to address these two issues in order to provide better service for its retailers.

Kemampuan Pemahaman Konsep dan Komunikasi Matematis: Pengaruh Model Pembelajaran Children Learning in Science (CLIS) Berbantuan Alat Peraga Edukatif

Penelitian ini bertujuan untuk mengetahui kemampuan pemahaman konsep dan kemampuan komunikasi matematis peserta didik SMA di Pesawaran setelah diberi perlakuan pembelajaran Children Learning in Science (CLIS) berbantuan alat peraga edukatif. Metode penelitian ini menggunakan metode quasy experimental design. Subjek penelitian terdiri dari 152 peserta didik kelas XI SMAN 1 Negerikaton dengan 60 peserta didik sebagai sampel penelitian. Teknik analisis data menggunakan uji normalitas, uji homogenitas dengan uji hipotesis statistik yaitu menggunakan uji One-Way Multivariate Analysis of Variance (MANOVA). Dari data yang diperoleh nilai sig 0,00 ˂ 0,05 maka menunjukan nilai rata-rata bahwa terdapat pengaruh model pembelajaran CLIS berbantuan alat peraga edukatif terhadap kemampuan pemahaman konsep dan kemampuan komunikasi matematis dibandingkan model pembelajaran konvensional yang diterapkan oleh pendidik disekolah. Kesimpulannya adalah terdapat hasil yang positif terhadap model pembelajaran tersebut.

SELECTION AMONG SEGREGATING PEPPER PROGENIES WITH ORNAMENTAL POTENTIAL USING MULTIVARIATE ANALYSES

ABSTRACT Peppers belong to the family Solanaceae and can be used for several different purposes. The use of morphological descriptors associated with multivariate techniques allows identifying pepper progenies that can be recommended for ornamental purposes. This study aimed to select segregating Capsicum annum progenies based on multivariate analyses. The study was conducted in a plant nursery at the Biotechnology and Plant Breeding Sector of the Center of Agricultural Sciences of the Federal University of Paraíba (CCA/UFPB). Twenty F3 progenies of ornamental peppers were used, namely: UFPB 5, 8, 10, 15, 18, 22, 25, 32, 33, 36, 40, 42, 49, 56, 60, 62, 64, 69, 75, and 77, plus four additional controls consisting of the parents UFPB 77.3 and UFPB137 and two commercial cultivars, Etna and Pirâmide. Seventeen plant and fruit traits were evaluated. The experimental design was completely randomized. The data were subjected to a multivariate analysis of variance. All analyses were performed with the software R, version 3.0.3. The results of the multivariate analysis of variance highlighted significant differences between the populations of ornamental peppers. Singh’s (1981) method made it possible to determine that eleven of the seventeen traits studied contributed with 73.7% of the genetic divergence, whereas six traits contributed with only 21.2%. There is genetic diversity among the evaluated progenies. Progenies 5, 10, 22, 33, 49, and 69 are recommended for selection for having ornamental traits for in-pot cultivation. Selection within these progenies is recommended to continue the breeding program of ornamental peppers for in-pot cultivation.

Model Pembelajaran Search, Solve, Create And Share (SSCS): Dampak Terhadap Kemampuan Penalaran Matematis Dan Motivasi Belajar Peserta Didik

Penelitian ini betujuan untuk mengetahui pengaruh model pembelajaran Search, Solve, Create and Share (SSCS) terhadap kemampuan penalaran matematis dan motivasi belajar peserta didik. Penelitian ini menggunakan jenis penelitian Quasy Experimental Desaign. Populasi dalam penelitian ini adalah seluruh siswa kelas VIII SMP Negeri 2 Belitang Mulya. Sampel diambil dua kelas yaitu kelas VIII A sebagai kelas eksperimen yang memperoleh pembelajaran menggunakan model Search, Solve, Create and Share (SSCS) dan kelas VIII B sebagai kelas kontrol yang memperoleh pembelajaran konvensional dengan menggunakan teknik simple random sampling. Analisis data pada penelitian ini menggunakan Uji Multivariate Analysis of Variance (Manova). Hasil analisis data menunjukkan menunjukkan bahwa: (1) terdapat pengaruh model pembelajaan Search, Solve, Create, and Share (SSCS) terhadap kemampuan penalaran matematis peserta didik, (2) terdapat pengaruh model pembelajaan Search, Solve, Create, and Share (SSCS) terhadap motivasi belajar peserta didik, (3) terdapat pengaruh model pembelajaan Search, Solve, Create, and Share (SSCS) terhadap kemampuan penalaran matematis dan motivasi belajar peserta didik.

COFFEE CONSUMPTION MAY DECREASE THE SERUM CREATININE AND PLASMA MALONDIALDEHYDE LEVELS IN RATS WITH HYPERURICEMIA INDUCED BY A HIGH PURINE DIET

The aim of this research was to determine the effect of coffee on creatinine and plasma malondialdehyde (MDA) level in rats fed on high purine diet. A total of 24 male Wistar rats divided into 4 groups of 6 rats each. Beef broth were given to 3 groups (K1, P1, P2) for thirty days. Beef broth administration were followed by giving coffee (caffeinated= P1 or by a decaffeinated= P2, 144 mg/200 g BW). Serum creatinine levels and plasma MDA were examined periodically on day 0, 15, and 30. Data were analyzed by multivariate analysis of variance or MANOVA test (CI= 95%, P0.05). Coffee administration (caffeinated and decaffeinated) may decrease the serum creatinine (day-30, K1= 3.17+ 0.69; P1= 1.63+0.11; P2= 1.14+0.08) and MDA levels (day-30, K1= 9.8+0.28; P1= 5.80+0.55, P2= 3.87+3.26) after 30 days of treatment (P= 0.000 for creatinine and MDA levels in K1, P1, P2 groups). A lower serum creatinine and MDA levels can be found in decaffeinated coffee grup. Coffee consumption for 30 days (especially decaffeinated) may decrease serum creatinine and plasma MDA in rat induced by a high purine diet.