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Learning Difficulties Of High School Students In Understanding The Material Of Human Reproductive Systems Triggering Misconceptions, Naning Wahyuni, Hadi Suwono, Umie Lestari

Jurnal Pendidikan Sains

Human Reproductive System is a basic concept in biological sciences that is related to daily life and interesting for high school students. Complicated learning materials make it difficult for students to construct their knowledge and understand the concepts. Survey research using a questionnaire was conducted to determine the causes of difficulties for high school students in understanding the Human Reproductive System concepts. Respondents were grade XII science students and two teachers. The data obtained were analyzed descriptively. The research findings indicate that students’ difficulties are due to (1) the extensive usage of scientific terms, (2) abstract concepts, (3) monotone, and …

Student Mathematical Representation Ability With Reflective Cognitive Style In Solving Geometric Problems, Fitratur Rahmah, Gatot Muhsetyo, Santi Irawati

Jurnal Pendidikan Sains

This research aims to describe the mathematical representation ability of students with reflective cognitive style in solving geometric problems. The subjects of this study were two students whose reflective cognitive style were selected based on the results of the MFFT test. The research method used was descriptive research with a qualitative approach. The ability of mathematical representation was described based on three standards of mathematical representation ability, namely; (1) creating and using representations to organize, record, and communicate mathematical ideas, (2) choosing, using and translating between representations to solve problems, (3) using representations to create models and interpret mathematical, physical, …

Micro Pipes – A Portable Integrated Platform For Electrochemical Sensing Using Essence Architecture, Hansin Kim

Theses

The field of microfluidics and lab-on-chip (LOC) technology has the potential to have a truly transformative effect in biological engineering. This includes areas such as single-cell analysis, environmental monitoring, regenerative medicine, and point-of-care diagnostics. Yet despite being the subject of intense research over the past two decades, LOC devices have not been widely adopted. It is increasingly evident that there is a need for an effective and adaptable integration strategy to realize the potential of this technology.

Presented in this thesis is a design for a chip-to-world interface that aims to improve integration while maintaining cost-efficiency and ease of fabrication. …

Connectivity Differences Between Gulf War Illness (Gwi) Phenotypes During A Test Of Attention, Tomas Clarke, Jessie Jamieson, Patrick Malone, Rakib U. Rayhan, Stuart Washington, John W. Vanmeter, James N. Baraniuk

Department of Mathematics: Faculty Publications

One quarter of veterans returning from the 1990–1991 Persian Gulf War have developed Gulf War Illness (GWI) with chronic pain, fatigue, cognitive and gastrointestinal dysfunction. Exertion leads to characteristic, delayed onset exacerbations that are not relieved by sleep. We have modeled exertional exhaustion by comparing magnetic resonance images from before and after submaximal exercise. One third of the 27 GWI participants had brain stem atrophy and developed postural tachycardia after exercise (START: Stress Test Activated Reversible Tachycardia). The remainder activated basal ganglia and anterior insulae during a cognitive task (STOPP: Stress Test Originated Phantom Perception). Here, the role of attention …

The Contribution Of Islamic Banks Towards The Achievement Of Sustainable Development Goals: The Case Of Indonesia, Nunung Ghoniyah

Economics and Finance in Indonesia

This study aims to strengthen the opinion that the main goal of Islamic banks is not to obtain profit, but rather to improve the standards of living. In this study, the evidence is obtained by processing secondary data on Islamic banks in Indonesia during the period of 2011 to 2017 by using panel data regression model. The results of the data analysis support the hypothesis that banks whose goals are aimed at falah will demand lower payment obligations from customers, allowing the customers to manage funds in the real sector. The implication is also strengthened by good financial quality control, …

Internet Screen Time And Related Factors: Threat To Adolescence In Indonesia, Kristiana Kurniasanti, Karina Firdaus, Hans Christian, Tjhin Wiguna, Martina Wiwie, Raden Ismail

Makara Human Behavior Studies in Asia

The widespread use of the internet has produced both positive and negative impacts. Among the latter is internet addiction (IA). The worldwide prevalence of this addiction has been measured at approximately 6%, although the specific prevalence in Indonesia is uncertain because no validated instrument to measure IA has been developed for the Indonesian context. Hence, screen time was used in this study as an alternative measure of the magnitude of IA in Indonesia, where more than 6 hours is considered risk for IA. Researchers measured internet screen time (IST) and potential related factors in adolescents. The subjects of this cross-sectional …

Analisis Pelaksanaan Perkuliahan Sph Ii Untuk Buku Ajar Perkembangan Embrio Mamalia, Ulya Ruwaida, Mohamad Amin, Umie Lestari

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

This study aims to identify the need for the development of SPH II teaching materials on mammalian embryo development material. Data collection research was conducted using student questionnaire sheets. The results of the study show that 100% of students need the development of new teaching materials with research results that present applicative examples in society. As many as 57% of students stated difficulties in using available teaching materials because of the complexity of the language and the absence of evaluation. Mammalian embryo development is an elusive material (43%) and there has never been an explanation of the role of genes …

Buku Ajar Ekologi Komunitas Flora Savana Bekol Taman Nasional Baluran Berbasis Problem Based Learning Untuk Matakuliah Ekologi, Nizar Azizatun Nikmah, Fatchur Rohman, Suhadi Suhadi

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

Textbooks are one of the printed materials, arranged efficiently and effectively to support condusive learning in a particular subject. The aim of this research & development’s to produce the effective, valid and practical ecology textbooks based on Problem Based Learning. This textbook for ecology subject, refers to the ADDIE development model. The validation results from the three experts showed very positive results, from the subject expert obtained score are 98,33 (very valid); 100 (very valid) score of subject practitioner; score of 98,75 (very valid) from media expert. Based on the result, this product’s very propered and can be used in …

Karakterisasi Contoh Spontan Guru Pemula Dalam Pembelajaran Matematika, Selly Meinda Dwi Cahyaningsih, Subanji Subanji, I Made Sulandra

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

The purpose this study is to explore characterization of teacher's spontaneous example. Type a study is deskriptif kualitatif, subject is beginner teacher. The results show that three spontaneous examples characterization of beginner teacher such that illustrative spontaneous examples, clarified spontaneous examples, and confirmatory spontaneous examples. Illustrative spontaneous examples is given beginner teacher to illustrate students difficulty and explaned the new topic. Clarified spontaneous examples is given beginner teacher to clarified students difficulty and students error. Confirmatory spontaneous examples is given beginner teacher to confirm mathematics concept and understanding of students contents.

Pengaruh Model Pembelajaran Inkuiri Terbimbing Terhadap Literasi Sains Siswa Kelas V Sd, Ranti Nur Fa’Idah, Supriyono Koes Handayanto, Susriyati Mahanal

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

Scientific literacy is a skill that is very important and must be possessed by students. A person with good scientific literacy will be able to survive in the XXI century. In the learning process students are weak in interpreting information so that students have difficulty or cannot make conclusions. Scientific literacy by using initial ability moderator variables in the high category and low category and their interactions in fifth grade students of SD Tanjung Rejo 2 Malang. The results of the pretest and posttest were tested differently with the help of SPSS. The results showed there were significant differences in …

Proses Penalaran Analogi Siswa Impulsif Dalam Memecahkan Masalah Bangun Ruang Sisi Lengkung, Diyah Ayu Rizki Pradita, Dwiyana Dwiyana, Sisworo Sisworo

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

The aim of the study was to describe the process of reasoning analogy of students impulsive in solving problems in constructing build arches. This type of research is a qualitative descriptive study using Sternberg's stage. The subjects in this study were three students of class X. The instruments used were MFFT, TKM, TPABRSL, and interview guidelines. The results of indicate that impulsive students are highly capable and are able to pass the encoding and inferring stages. However, students who are capable are not doing the mapping and applying stages correctly. Whereas low-ability impulsive students cannot pass all stages.

Arsitektur Rumah Balla Lompoa Galesong Suku Makassar Sebagai Sumber Materi Geografi Budaya, Syamsuriadi Syamsuriadi, I Komang Astina, Singgih Susilo

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

The purpose of this study was to describe the meaning of the balla lompoa symbol Galesong in the Makassar tribe while still looking at the geographic context behind the shape of the balla lompoa house. This type of research is qualitative descriptive using an ethnographic approach with a perspective of symbolic interaction. The results of this study indicate that the symbols on balla lompoa have a meaning that is guided by the philosophy of the Makassar tribe, namely sulapa appaka (square). The form of balla lompoa Galesong Makassar tribe is also motivated by the location of the Galesong region which …

Miskonsepsi Asam Basa Berbasis Multipel Representasi Pada Lintas Jenjang Pendidikan, Isnaini Yunitasari, Hayuni Retno Widarti, Nazriati Nazriati

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

This study aims to describe acid-base misconceptions across levels of education using multiple representation based diagnostic tests. The research method is quantitative descriptive. Analysis process of misconceptions using modified CRI. The validity of diagnostic tests is between 0.197 to 0.798, and reliability is 0.753 and 0.626. The research subjects were 224 people consisting of class XI students, class XII students, second semester students, and 4th semester students. The results showed that the average percentage of acid-base misconceptions in class XI students to 4th semester students respectively was 50.30%; 56.84%; 53.81%; and 41.07%. Misconceptions that often occur in students and students …

Proses Metakognitif Siswa Dalam Menyelesaikan Masalah High Order Thinking, Jojor Janni Astuti Sigalingging, Makbul Muksar, Abdul Qohar

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

Metacognitive plays an important role in supporting students' success in solving High Order Thinking questions. The ability to think high-level includes analyzing, evaluating, and creating. Based on the type metacognitive consists of awareness, regulation, and evaluation. The data collected in this study is descriptive because the main data from this study are verbal data in the form of student expressions. This study aims to describe the metacognitive process of students in solving high order mathematical thinking problems. The metacognitive process of the type of awareness occurs when students try to understand the High Order Thinking problem and rethink what was …

Deskripsi Kesalahan Siswa Dan Scaffoldingnya Dalam Menyederhanakan Pecahan Bentuk Aljabar, Indah Puspitasari Maharani, Sisworo Sisworo, Hendro Permadi

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

The research objectives are (1) describing the mistakes made by students in simplifying fractions of algebraic forms and (2) describing the scaffolding given to overcome student errors. The subjects in this study were UM Lab High School students in the XI IPS class who made mistakes in completing the test. The research subjects studied were 2 students categorized in the low ability category. This type of research is descriptive qualitative. Data obtained through tests and interviews. The results showed that (1) the mistakes made by students in simplifying the algebraic fractions consisted of errors in denominator equations, errors in algebraic …

Pengaruh Kecerdasan Emosional Terhadap Hasil Belajar Geografi Siswa Sma, Nurul Miftakhul Jannah, Dwiyono Hari Utomo, Budi Handoyo

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

This study aim is to determine the effect of emotional intelligence on geography learning outcomes. This study design was survey design. This study was divided into four stages those were the preparation stage, the implementation phase, the data processing stage, and the reporting stage. The subjects in this study was students from XII IPS I, XII IPS II, XII IPS III, XII IPS IV and XII IPS V. The data was collected in form of quantitative. There was two kinds of data that presented in this study, data obtained from teachers (personal documents), and data obtained from questionnaires. The results …

The Potentials Of Faecal Sludge Treatment Using Local Conditioners In Tanzania: A Review, Doglas Benjamin1

Tanzania Journal of Engineering and Technology (TJET)

Worldwide, every day human beings generate millions of tons of Faecal Sludge (FS), which is rich in water, nutrients, energy, and organic compounds. Yet FS is not being managed in a way that permits us to derive value from its reuse, while at the same time, millions of farmers struggle with depleted soils and lack of water. In most of the developing countries, energy for cooking is mainly derived from cutting of trees, either as wood or charcoal. Resource recovery and reuse from FS can create livelihoods, enhance food security, support green economies, reduce waste and contribute to cost recovery …

Practical Approach For Removal Of Natural Organic Matter And Defluoridation Of Maji Ya Chai River Water: Use Of Acid Pre-Treated Bone Char And Coagulants, Godfrey Mbabaye

Tanzania Journal of Engineering and Technology (TJET)

The removal of natural organic matter (NOM) and fluoride from Maji ya Chai River water (MCRW) using bone char (BC) and coagulants was investigated. Fine BC particles ranging from 0.045 to 0.2 mm were used in a 1 litre half-filled container, stirred at 300 rpm for 60 min followed by addition of a commercial coagulant and allowed to settle for 24 hours to remove NOM. MCRW practicable and affordable defluoridation method for removal of NOM through defluoridation with BC pre-treated with 0.3 N HCl followed by coagulation with Poly-aluminium chloride (PACl) is proposed. Reduction of fluoride from 21 mg/L to …

Characterization Of Secondary Metabolites Profile Of Flavonoid From Salam Leaves (Eugenia Polyantha) Using Tlc And Uvspectrophotometry, Anisa Lailatusy Syarifah, Rurini Retnowati, Soebiantoro

Pharmaceutical Sciences and Research

The flavonoids derived from Eugenia polyantha leaves were characterized by rapid and low cost approach. The aim of this research is to characterize secondary metabolite profile of flavonoids in the n-butanol fraction of E. polyantha using thin layer chromatography and ultraviolet-visible spectrophotometry. The n-butanol fraction was separated by using silica gel 60 GF254 as the stationary phase; chloroform: ethanol: glacial acetic acid (9.4: 0.5: 0.1) as the mobile phase; and visualized by using UV light 366 nm. Five isolates were obtained from the separation, but there were only three isolates (Rf 0.26; 0.44; 0.77) respectively identified as flavonoid compounds. The …

Cytotoxic Activity Of Stem Of Pycnarrhena Cauliflora Through Apoptosis Induction On Human Breast Cancer Cell Line T47d, Masriani, Rudiyansyah, Rini Muharini, Eny Enawaty

Pharmaceutical Sciences and Research

Cytotoxic activities of extracts of Pycnarrhena cauliflora leaves, stems and roots on some human cancer cells have been known. However, the cytotoxicity of stem of Pycnarrhena cauliflora on human breast cancer cell line T47D through an apoptosis induction has not been proven yet. This study was an effort in understanding the cytotoxic activity of stem of Pycnarrhena cauliflora through apoptosis induction. The crude ethanol extract was partitioned between n-hexane and dichloromethane at pH 3, 7 and 9, which was subsequently tested for their cytotoxic activity against human breast cancer cell line T47D by using 3-(4,5-dimethylthiazol-2-yl)- 2,5-diphenyltetrazolium bromide (MTT). Flow cytometric …

The Causes And Effects Of Earnings Management On Stock Prices, Kawa Wali, Sabhi Saleh, Kees Van Paridon

Journal of Economics and Administrative Sciences

This study uses the performance of the discretionary estimation models by using a sample of listed companies in the Netherlands and Germany. The actual accounting framework provides a wide opportunity for managers to influence data in financial reporting. The corporate reporting strategy, the way managers use their discretionary accounting, has a significant effect on the company's financial reporting. The authors contribute to the literature through enhancement to these models to accomplish better effects of identifying earnings management as well as to present evidence that is particular to the Dutch and German setting. For this, we followed the methodology of Dechow, …

Coal Mining Sector Contribution To Environmental Conditions And Human Development Index In East Kalimantan Province, Kunny Izza Indah Afkarina, Sindhung Wardana, Poerborini Damayanti

Journal of Environmental Science and Sustainable Development

Coal mining has been one of the issues that led to pros and cons in Indonesia. Research shows that mining activities are one of the factors that affect people’s incomes and local and national economic development. However, mining is a lucrative activity that leads to construction booms that attract population growth and lead to deforestation, thus affecting the environmental conditions of a region. The coal mining industry of Indonesian province of East Kalimantan, on the island of Borneo, provides most of the economic base needed to build the infrastructure and provide energy of the country. Kalimantan Province accounts for approximately …

Effect Of Glutamine Supplement Administration On The Reduction Of Muscular Fatigue Post-Eccentric Exercise, Afif Rusdiawan, Taufikkurrachman Taufikkurrachman

Folia Medica Indonesiana

Menopausal period is the period of permanent cessation of menstruation due to reduced or lost ovarian activity. One of the effects of decline estrogen levels during menopause is atropic vulvovaginitis. Consumption of phytoestrogens can reduce menopausal symptoms. Phytoestrogen is found in vegetables and fruits such as tomatoes and red melon. The objective of this study was to compare the effectiveness of red melon juice and tomato on the increase of vaginal wall thickness in menopausal rats. This study revealed an alternative of phytoestrogen sources that is more effective to reduce menopausal symptoms, especially those related to vaginal atrophy to improve …

Altitudinal Distribution And Monthly Occurrence Of Butterflies In The Kihansi Gorge Forest, Tanzania, With A Checklist Of Species, Devolent Mtui, Colin Congdon, Ivan Bampton, Parson Kalenga, Haule Leonard

Tanzania Journal of Science

The goal of this project was to establish a checklist of butterflies occurring in Kihansi gorge to serve as baseline for monitoring of gorge ecosystem health. The key questions were what and how many species of butterflies occur in the gorge with respect to time and space. The study was conducted between October 2005 and February 2007. Butterflies were recorded twice a week, along a walking trail, using malaise traps and sweep net. The traps were located at upper (> 750 – 1100 m), mid (> 580 – 750 m) and lower (300 – 580 m) gorge. A total of …

Crop Pests, Control Measures And Potential Impacts In Kihansi Catchment Area, Beatrice Pallangyo, K. Mdily, C. Mkondo, A. Kibola

Tanzania Journal of Science

A baseline survey which covered 349 households in Bomang’ombe and Masisiwe (Kilolo district), Kibengu and Mapanda (Mufindi district) and Chita and Chisano (Kilombero district) was conducted to identify major pests, control measures and potential impacts in Kihansi catchment area. Maize was the most predominant crop being cultivated by 55% of the total respondents in all the study districts. Pests and diseases were the major constraints to crop production, whereby cereal stem borers were the most serious pests being reported by 88.2% of respondents. Application of synthetic pesticides was the major pest control measure, being applied by 66% of the respondents. …

Research Work And Conservation Initiatives In The Kihansi Catchment Ecosystem, Tanzania, Cl Nahonyo

Tanzania Journal of Science

Keynote Address  for the Scientific Conference on Research and Conservation Initiatives in the Kihansi Catchment Ecosystem: Successes, Challenges and Way forward held at the National Carbon Monitoring Centre (NCMC), Sokoine University of Agriculture (SUA) on 24 – 27 July 2017.

Mammals Inventory Of The Kihansi River Gorge In Udzungwa Mountains, Tanzania, Dennis K. Ikanda, Samuel N. Mtoka, Mustafa Hassanali, Anna Mshanga

Tanzania Journal of Science

The Kihansi gorge montane forest in Udzungwa Mountains forms part of the Eastern Arc Mountains (EAM) which contain some of the most biologically diverse and endemic montane ecosystems in all of Africa. The Kihansi river gorge was opened up for hydroelectric development in the late 1990s, attracting hundreds of farming communities whose activities lead to environmental degradation and hence presumed biodiversity loss in the montane forest which is not understood. Using camera traps, an inventory of mammals of the area was conducted for 24 consecutive days. About 14 mammal species were photo captured, indicating diverse assemblage of large and medium …

Abundance And Distribution Of Afrosteles Distans An Indicator Of Food Availability For The Kihansi Spray Toad (Nectophrynoides Asperginis) In The Kihansi Gorge, Lulu T Kaaya, Rashid A Tamatamah, Timoth B Suya

Tanzania Journal of Science

Survivorship of the Kihansi Spray Toad in the wild depends on various factors such as environment, habitat, food availability, diseases and predation. This study assessed the abundance of Afrosteles distans Linnavuori 1959 as an indicator of food availability for the Kihansi Spray Toad. Samples were collected from sprinkled (A, B, C, D, E and F) and non-sprinkled (G and H) plots in the upper spray wetland in the Kihansi gorge during the dry period in 2007, 2008, 2015, 2016 and 2018. There was a significantly higher abundance of A. distans in sprinkled than non-sprinkled plots. ANOVA showed significant differences in …

A Review On The Mechanical Properties For Thin Film And Block Structure Characterised By Using Nanoscratch Test, Xianfeng Wang, Ping Xu, R Han, Jun Ren, Longyuan Li, N Han, Feng Xing, Jihua Zhu

School of Engineering, Computing and Mathematics

AbstractThe nanoscratch test has been identified as one of the important tools for evaluating the mechanical and tribological properties of materials. This paper reviews the current researches on the nanoscratch test using to characterise the mechanical properties of three typical materials, including thin film, polymer composite and concrete, from the perspectives of the Berkovich indenter, parameter selection, mode selection, and analysis of resulting data. In addition, to provide a deep understanding on the test from different magnitude, a comparison between the microscratch test and nanoscratch test on the evaluation of tribological performance is also provided in this paper. The characterisation …

Distortional Buckling Of Perforated Cold-Formed Steel Beams Subject To Uniformly Distributed Transverse Loads, Nan Ting Yu, Boksun Kim, Long Yuan Li, Wei Jian Hong, Wei Bin Yuan

School of Engineering, Computing and Mathematics

No abstract provided.