scholarly journals Analysis of Student Learning Experiences: Differences in Abilities and Perceptions towards Research Methodology

2020 ◽  
Vol 11 (2) ◽  
pp. 25-33
Author(s):  
Marisa Agustina ◽  
Djufri Djufri ◽  
Cut Nurmaliah

This study aimed to determine the kinship relationship of Malvaceae species based on morphological characteristics, this study uses a descriptive method that interprets the kinship of the species Malvaceae based on morphological characteristics. The object of the research is the species of Malvaceae namely hibiscus (Hibiscus archeri), waru (Hibiscus tiliaceus), rosella (Hibiscus sabdariffa), pulutan (Urena lobata L.), ocra (Abelmoschus esculentus), cotton (Gossypium hirsutum), sidaguri (Sida rhombifolia L.), kembang tidur (Malvaviscus penduliflorus), lanterns (Abutilon pictum). The parameters used are stem organs, leaves, and flowers. Data analysis was performed by calculating the Similarity Index (IS) and Dissimilarity Index (ID), the data in Cluster Analysis to group Malvaceae species based on the same number of characters. The results of the research show that the closest kinship relation owned by a combination of plants that has the lowest Dissimilarity Index (ID) value in the species of hibiscus (Hibiscus archeri) and kembang tidur (Malvaviscus penduliflorus). The conclusion of this study is there are three categories of relationships of the Malvaceae species, which are the closest kinship relation, close kinship relation, and the kinship relation are not close. The kinship relationship is remarkably close to the lowest Dissimilarity (ID) Index value indicated by the combination of hibiscus (Hibiscus archeri) and kembang tidur (Malvaviscus penduliflorus) with ID value = 25.

Jurnal Jeumpa ◽  
2021 ◽  
Vol 8 (2) ◽  
pp. 545-553
Author(s):  
Aulia Agustina ◽  
Hasanuddin Hasanuddin

The study about “Phenetic Relationship of 7 Species of Orange Plants in BenerMeriah Highlands” was inducted back in August until September 2017. The aim of this study is to describe the morphological characterization of 7 species of orange plants in BenerMeriah highlands and to understand the phenetic relationship of 7 species of oranges plant in BenerMeriah highlands. The method used in this study was observation with the type of mixture between qualitative and quantitative. The subjects of this study are 7 species of orange plants, namely: a) Citrus reticulata; b) Citrus amblycarpa; c) Citrus hystrix; d) Citrus nobilis; e) Citrus maxima; f) Citrus sinensis; and g) Citrus aurantifolia. The parameters of this study were the morphological characteristic of stems, leaves, fruits and flowers. The collected data were analyzed descriptively, where the similarities were measured using Similarity Index (SI) and the dissimilarities were measured using Dissimilarity Index (DI) to classify the total of 7 species of orange plants using cluster analysis. According to the morphological characteristics, it could be concluded that there are several differences and similarities among the 7 species of orange plants found in BenerMeriah Regency. The combination of Citrus hystrix with Citrus aurantifolia have the closest phenetic relationship, which have 66 of SI. The other combinations that also have close phenetic relationship are Citrus hystrix with Citrus maxima and Citrus nobilis with Citrus sinensis. The pheneticrelationship that have the highest DI is the combination of Citrus amblycarpa with Citrus maxima, which have 88 of DI


2021 ◽  
Vol 22 (7) ◽  
Author(s):  
Ridesti Rindyastuti ◽  
Lia Hapsari ◽  
Anjar Tri Wibowo

Abstract. Rindyaastuti R, Hapsati L, Wibowo AT. 2021. Analysis of morphological characteristics and phenetic relationship of ebony (Diospyros spp.) in Indonesia. Biodiversitas 22: 2738-2753. Diospyros L. (Ebenaceae) is an economically important genus that covers over 500 plant species. Members of this group are known to produce hard, dark, high-quality timbers known as ebony trees, while other members are known as persimmon trees. There is limited information on the morphological characters and phenetic relationship of this genus from Indonesian archipelago. In this work, we reported the phenetic clustering of 14 species of Indonesian Diospyros, based on plant habit, stem, leaves, and fruit characters, which was analysed using UPGMA and Jaccard similarity index. The phenetic dendrogram divided the 14 species of Diospyros into two main clusters which separating Subgen. Maba and Eudiospyros. Further, subgen. Maba was clustered into a single cluster while subgen. Eudiospyros was divided into 3 sub-clusters as sister groups. The clustering in Eudiospyros was supported by low SI and bootstrap value, demonstrating the high morphological variation of the subgenus. The sectional separation of Diospyros spp. was considered as paraphyletic. In general, our phenetic clustering exhibited suitability and relevancy with previous classification. Fruit size and trichomes are very important in this phenetic clustering, especially to form Eudiospyros subgenus. Fruit trichomes were also special characters related to biogeographical distribution following the Wallace line theory.


Author(s):  
Yaya Hasanah ◽  
Lisa Mawarni

Abstract. Hasanah Y, Mawarni L. 2020. Exploration and identification of Anredera cordifolia morphological characters in the highlands and lowlands. Biodiversitas 21: 2759-2766. Information about genetic diversity and relationships between accessions is very important in plant breeding programs, because with the availability of this information, it is easier to determine relationship between accessions that can be used as a basis for plant selection. The objective of the research was to evaluate the morphological characteristics and relationship of binahong or Anredera cordifolia (Ten.) Steenis) accessions in the lowlands and highlands. The study was conducted in Karo (highlands) and Medan (lowlands), North Sumatra, Indonesia, from May to August 2019. This research used a descriptive method. Before the survey and exploration are conducted, first a pre-survey was conducted by gathering information from key informants and other informants. The characteristic of morphological diversity A. cordifolia can be distinguished based on leaf color, stem shape, axillary tuber, rhizome, and the presence of flowers. The dendrogram relationship between accessions is based on a genetic similarity matrix using cluster analysis. Analysis of qualitative morphological characters revealed the existence of variability among A. cordifolia accessions. There is a far relationship relation between A. cordifolia plants in Karo and Medan with Eucludian range of 0.446 to 57.725, hence resulting in two clusters that show differences in the variation of A. cordifolia plants. There is a distant relationship relation with M4 and M7 accessions with a dissimilar distance of 57,725 and the closest relationship with accession K1 and K2 with a dissimilar distance of 0.446. Therefore, morphological characterization in the research is valuable to understand the variability of genetic of A. cordifolia accessions in the lowland and highland in North Sumatra.


2021 ◽  
Vol 21 (1) ◽  
pp. 42
Author(s):  
Mardudi Mardudi ◽  
Eka Selviyanti ◽  
Adi Bejo Suwardi

Durian (Durio zibethinus L.) is one of tropical fruit grown in Southeast Asia and known as King of the fruit. Durian (D. zibethinus) has many varieties with distinctive of morphological characters. The study aim is to explore the diversity of durian varieties in Kota Bahagia sub-district, Aceh, Indonesia. This study was carried out in October-December 2020 in five villages, namely Jambo Keupok, Alur Duamas, Seneubok Alur Buloh, Seneubok Keranji and Beutong. Data collection on the morphological characteristics of durian varieties was carried out through direct field observation of morphology. The data were tabulated and the similarity index was calculated. A total of 18 varieties of durian were found in 5 villages in Kota Bahagia sub-district, i.e. Jantung, Semut, Nanas, Kunyit, Bintang, Tamago, Labu, Bingen, Patai, Jelatang, Jerat, Ampo, Toba, Lilin, Kondo, Limeng, Langsat, dan Gadang Tampok. The highest similarity index value was found in Limeng (Lm) and Patai (Pa) varieties with an association coefficient value of 63.04, while the lowest values were found in Nanas (Na) and Semut (Se) varieties and Kondo (Ko) and Nanas (Na) varieties with an association coefficient of 15.21.


2018 ◽  
Vol 13 (1) ◽  
pp. 38-48
Author(s):  
Mudofar Mudofar

The purpose of this study is to determine the effect of facilities, motivation, and workdiscipline on the work performance of PT Zebra Asaba Industrui employees. The research methodused is descriptive method with regression and correlation approaches which is a method that aims todescribe the influence and relationship of something that is going on at the time the research isconducted. The results of this study indicate partially or simultaneously facility variables,motivation, and work discipline have a significant effect on employee performance. The magnitude ofthe correlation value (R) is 0.924 which means that there is a strong correlation / relationshipbetween facilities, motivation, and work discipline with employee performance. The amount ofadjusted coefficient of determination (R2) is 0.793 or 79.3%, which means that independentvariables can explain changes in employee performance variables by 79.3% while the remaining20.7% is explained by other factors beyond this research.


Author(s):  
Б.Г. Вульфович

Задачей данной статьи является рассмотрение лингвопрагматических особенностей комментариев пользователей социальной сети «Твиттер» на выход Великобритании из ЕС. Анализ данных комментариев с лингвопрагматической точки зрения представляет интерес, так как показывает наиболее актуальную картину отношения пользователей социальных сетей к произошедшему событию. Приоритетными методами анализа лингвопрагматического потенциала Интернет-комментариев для нас являются: описательный метод, метод прагматического анализа, т.е. рассмотрение языкового материала в его непосредственном контексте в функциональном аспекте, метод частичной выборки, метод контекстологического описания. Контекстуальный метод был использован с целью установления особенностей комментариев в среде социальной сети «Твиттер»; описательный метод - для выявления непосредственного отношения пользователей социальных сетей к выходу Великобритании из ЕС; частичной выборки - для отбора наиболее эффективных и целостных комментариев с позиции прагматики и их реализации в данном контексте. Проведённое исследование позволило установить, что большинство людей удовлетворено результатами выхода Великобритании из ЕС и положительно отзывается об этом событии. Об этом свидетельствует как большое количество экспрессивов, использованных в интернет-комментариях в отношении данного события, так и активное употребление в них оценочной лексики. Результаты проведённого исследования могут быть применены в теоретических работах по описанию характеристик речевых актов, в курсе теоретической грамматики, стилистики, прагмалингвистики. The purpose of this article is to review the linguo-pragmatic features of Brexit represented in the comments in Twitter. Their analysis from a linguistic-pragmatic point of view may be of interest, since it shows the most relevant picture of the relationship of social network users for the event. The priority methods for analyzing the linguo-pragmatic potential of Internet comments for us are: a descriptive method, a pragmatic analysis method, i.e. consideration of linguistic material in its immediate context in the functional aspect, partial sampling method, contextual description method. The contextual method was used to establish the characteristics of comments on the Twitter social network; descriptive method was used to identify the direct relationship of social network users to the UK exit from the EU; partial sampling was used to select the most effective and holistic comments from the position of pragmatics and their implementation in this context. The study found that most people are satisfied with the results of the UK exit from the EU and respond positively to this event. The results of the study can be applied in theoretical works on the description of the characteristics of speech acts, in the course of theoretical grammar, stylistics, pragmalinguistics.


2020 ◽  
Vol 13 (1) ◽  
pp. 17-33
Author(s):  
Risma Firda Diana

This research aims to describe profil of preservice teacher’s mathematical connection ability in solving mathematical problem based on SOLO taxonomy. The approach of this research is qualitative with descriptive method. Respondent in this research is 29 Madrasah Ibtidaiyah Teacher Education students STAI Al-Fithrah Surabaya. This research uses mathematical connection test and  interview guide to collect data. The result of this research show that the  average mathematical connection ability of high-ability students is 85% with a very good category and that is at the level of multistructural to relational, the  average mathematical connection ability of medium-ability students is 50,5% with enough category and that is at the level of unistructural to multistructural, and  the  average mathematical connection ability of low-ability students is 16% with a very low category and that is at the level of pre-structural until unistructural level.


Author(s):  
O. P. Tymoshenko ◽  
◽  
O. S. Snopenko ◽  
G. A. Papeta ◽  
G. V. Vikulina ◽  
...  

It is known that the typical for animals of different species the nature of the serrations of the free edges of the scales of the hair cuticle, the density of their location and proximity to each other can determine the species of animal hair samples. The aim of the study was to establish the value of the cuticular index in clinically healthy domestic cats and dogs. The area of the outer surface of the scales of the hair cuticle, or cuticular index, was determined in 20 clinically healthy domestic cats and 18 dogs. Examination of the cuticle was performed using prints on a colorless lacquer, which was applied to a glass slide, pressing the hair to the paint layer. The imprint was examined under a microscope (enlargement ×400) and the cuticular index value was established in the root zone, in the thickest part of the hair shaft, expressed in μM2. It was found that in domestic cats and dogs without clinical signs of any pathology, the values of the cuticular index are in the range of 80-170 and 100-210 μM2accordingly. The value of the cuticular index in domestic cats 60-70 μM2 and in dogs 60-90 μM2in 100 % accidents does not meet in healthy animals. The obtained results can be used as a control during diagnostic activities for numerous variants of internal pathology of domestic cats and dogs, as additional diagnostic tests.


Author(s):  
Yosica Mariana

Generally, activities conducted by people generate waste. The waste which increasingly rises causing a big problem. Therefore, the role of community in waste management will strongly support the process of solving the waste problem in the community. The purpose of this study was to determine the relationship of engagement and active participation of citizens, as reflected in the attitude of citizens in the activities related to the response to the waste problem in the community. A descriptive method was used in this study to describe the involvement and participation in the prevention of waste. The result showed that the paradigm of PSBM (community-based waste management) appeared sporadically and has not yet received the maximum support from regional governments. A paradigm which is “people pay, the government manages“, has grown within the community for years. It would hardly change people’s behaviour patterns in solving the waste problem in the community since changing the city into a city that is clean, comfortable and healthy involved many parties, including the community.


2016 ◽  
Vol 14 (1) ◽  
pp. 29-37 ◽  
Author(s):  
Dương Thúy Yên ◽  
Nguyễn Kiệt ◽  
Bùi Sơn Nên ◽  
Nguyễn Văn Thường ◽  
Nguyễn Bạch Loan ◽  
...  

Three Pangasius species including P. krempfi, P. elongatus and P. mekongensis, are economically important. They can be mis-identified due to similar external appreance at small sizes. This study aimed to distinguish these species based on their differences in DNA barcode, COI (cytochrome c oxidase subunit I) gene, and morphological characteristics. Fish with various sizes (>90 samples/species) were sampled at the lower Mekong delta region. Kimura-2 parameter genetic distances based on COI sequences of three species (15 samples, in which, 4 unique sequences were assigned Genbank accession numbers from KT289877 to KT289880) are relatively high, ranging 9.33 – 12.10 %. Morphological measurements show that coutanble traits including numbers of fin rays and the first gill rakers vary in similar ranges but ratios of metric traits are significantly different among three species (P<0.01). Principle component analysis using metric traits sets three species apart. P. elongatus is characterized by elongated body, long caudal preduncle, large eyes, and retangle palatine tooth plates. P. krempfi differs from P. mekongesis in characteristics on their head. The number of sections, shape and length of barbel are different among three species. Phylogenetic relationship of three species based on morphology and COI sequences indicate that P. krempfi is closer to P. mekongenis rather than P. elongatus, and that the distance between P. mekongenis and P. elongatus is the largest.


Sign in / Sign up

Export Citation Format

Share Document