Identifikasi Kemampuan Penalaran Ilmiah Siswa SMA pada Materi Suhu dan Kalor

Scientific reasoning skills help students to explain concepts and argumentations, which is it's beneficial for student. This article aims to identification pattern of scientific reasoning student that used to solving problems in heat and temperature material. Type of research is descriptive quantitative with 97 students. Instrument is used 4 item essay test of scientific reasoning with reliability 0.726. the scientific reasoning analyze with the rubric that level and category from pattern of correlational reasoning, proportional reasoning, and probabilistic reasoning. Results of research shows that scientific of reasoning skills in correlational reasoning 44.3% students into category of NR (no relationship). Then, in proportional reasoning 24.7% students into category of AD (Additive). In the last, in probabilistic reasoning 62.8% students into category of AP (Approximate). So, the conclusion of the research is students still in low level of category of scientific reasoning skills.Kemampuan penalaran ilmiah membantu siswa untuk menjelaskan suatu konsep dan berargumentasi, yang mana hal tersebut mendatangkan beberapa keuntungan bagi siswa. Artikel ini bertujuan untuk mengidentifikasi pola penalaran ilmiah siswa yang digunakan dalam menyelesaikan permasalahan pada materi suhu dan kalor. Jenis penelitian yang digunakan adalah kuantitatif deskriptif, dengan subjek sebanyak 97 siswa. Instrumen yang digunakan berupa 4 butir soal uraian penalaran ilmiah dengan reliabilitas 0.726. Analisis penalaran ilmiah sesuai dengan rubrik level dan kategori dari pola correlational reasoning, proportional reasoning, dan probabilistic reasoning. Hasil penelitian menunjukkan bahwa kemampuan penalaran siswa pada correlational reasoning paling banyak berkategori NR (No Relationship) sebesar 44,3%. Pada proportional reasoning paling banyak siswa berkategori AD (Additive) sebesar 24,7% dan pada probabilistic reasoning siswa paling banyak berkategori AP (Approximate) sebesar 62,8%. Dari hasil tersebut disimpulkan bahwa kemampuan penalaran ilmiah siswa masih tergolong rendah karena masih berada pada level-level terendah dalam kategori di tiap-tiap pola penalaran ilmiah yang digunakan pada butir soal

Memahami Budaya Melalui Teknologi: Aplikasi Permainan Tradisional Anak-anak Di Pulau Jawa Berbasis Mobile

Perkembangan teknologi yang pesat membuat anak-anak lupa akan kebudayaan Indonesia khususnya tentang permainan tradisional. Permainan tradisional sudah mulai terkikis keberadaannya dan tergantikan oleh permainan yang lebih canggih dan modern. Padahal, permainan tradisional adalah salah satu aset kebudayaan yang tidak boleh hilang keberadaannya sebagai identitas masyarakat negeri ini. Salah satu bentuk pelestarian mainan tradisional bagi anak-anak tersebut adalah dengan membuatkan aplikasi yag berisi tentang informasi yang lengkap mengenai permainan tradisional tersebut. Untuk itu, Aplikasi ini dibuat dengan maksud memberikan informasi tentang permainan tradisional yang dikemas didalam teknologi modern menggunakan smartphone sehingga mudah dipelajari dan dapatdigunakan dimana saja dan kapan saja sebagai media pembelajaran yang nantinya dapat membantu anak untuk memperkenalkan permainan tradisional Indonesia dengan lebih mudah. Aplikasi ini dibangun dalam beberapa tahap, yaitu tahap pertama dimulai dengan membuat metode perancangan dengan struktur navigasi, tahap kedua perancangan input output, tahap ketiga pengkodingan, tahap keempat kompilasi kode program, dan tahap yang terakhir yaitu implementasi program. Aplikasi ini dibangun dengan Android SDK dan bahasa Java. Dengan adanya aplikasi ini sangat membantu bagi para user baik orang tua maupun anak-anak untuk tetap mengenal dan melestarikan permainan tradisional di masing-masing daerahnya

SGXIO: Generic Trusted I/O Path for Intel SGX

Application security traditionally strongly relies upon security of the underlying operating system. However, operating systems often fall victim to software attacks, compromising security of applications as well. To overcome this dependency, Intel introduced SGX, which allows to protect application code against a subverted or malicious OS by running it in a hardware-protected enclave. However, SGX lacks support for generic trusted I/O paths to protect user input and output between enclaves and I/O devices. This work presents SGXIO, a generic trusted path architecture for SGX, allowing user applications to run securely on top of an untrusted OS, while at the same time supporting trusted paths to generic I/O devices. To achieve this, SGXIO combines the benefits of SGX's easy programming model with traditional hypervisor-based trusted path architectures. Moreover, SGXIO can tweak insecure debug enclaves to behave like secure production enclaves. SGXIO surpasses traditional use cases in cloud computing and makes SGX technology usable for protecting user-centric, local applications against kernel-level keyloggers and likewise. It is compatible to unmodified operating systems and works on a modern commodity notebook out of the box. Hence, SGXIO is particularly promising for the broad x86 community to which SGX is readily available.Comment: To appear in CODASPY'1

The effect of the STEM approach with the formative assessment in PBL on students' problem solving skills on fluid static topic

The use of problem-based learning with STEM and formative assessment (PBL-STEM-FA) to overcome the weakness in students’ problem solving skills (PSS) is still limited. This research investigates the effect of PBL-STEM-FA in students' PSS in the topic of fluid static. This research uses the pretest-posttest non-equivalent group design, and involves the research subject of class XI high school students in Malang, Indonesia. Experiment class’ students make engineering products in the form of miniature boats. The PSS test instrument with 0.799 reliability were used in this study. The data were analyzed by independent t-test, Hake-gain, and Cohen-effect. The results showed that students of PBL-STEM-FA class had significantly higher PSS and N-gain than students of PBL class. The highest raise occurred in the Useful Description indicator and hydrostatic pressure subtopic for the Experiment class; and Useful Description indicator and surface tension subtopic for Comparison class. But, the two classes had the same lowest raise, namely in the Mathematical Procedures indicator and capillaries subtopic. The effect size at 0.651-medium category implies that the implementation of PBL-STEM-FA is recommended to be carried out in the field to increase students’ PSS. It is recommended that future studies add an “Art” aspect to the STEM approach

The influence of problem based learning on critical thinking ability for students in optical instrument topic

The research aims to reveal the influence of the Problem Based Learning (PBL) model on students' critical thinking ability in optical instrument material. This research is a quasi-experimental research with Pre-test and Post-test Design. The subjects of this study were class X MAN 3 Malang. The experimental and control classes received PBL models and conventional learning models respectively. The instrument of this study was the Optical Instrument Critical Thinking Ability Test in the form of 14 essay questions with Cronbach’s alpha reliability 0.78. The research data were analyzed using several tests including t-test, N-gain, and size effect tests. Based on the results of the analysis, it was shown that the implementation of the PBL model succeeded in increasing students' critical thinking ability higher than that of conventional learning. The experimental class was able to reach the high N-gain score category, while the control class was in the medium category. The research has a “large” size effect category. This means that the PBL model implemented has a stronger influence than that of conventional learning in improving students' critical thinking ability. Thus, the PBL model can be recommended as an alternative learning model in improving students' critical thinking ability in physics learning on the topic of optical instruments

The effect of project based learning-STEM on problem solving skills for students in the topic of electromagnetic induction

Problem solving skills is one of six topical areas of physics education research, whereas the research about implementation of Project Based Learning-Science Technology Engineering and Mathematics (PjBL-STEM) to enhance students' problem solving skills is still lacking. This research purposed to reveal the impact of PjBL-STEM on students' problem solving skills in the topic of Electromagnetic Induction with a quasi experiment non-equivalent group design. Grade XII students of Senior High School 2 Pasuruan Indonesia were distributed to Experiment class (PjBL-STEM) (N=36) and Comparison class (PjBL) (N=38). Students worked on two projects, which were light shake and transformator. Problem Solving Skills Test with 0.681 Cronbach's alpha reliability was used as research instrument. Data analysis was done with t-test, effect size, and N-gain. The result showed PjBL-STEM gained problem solving skills significantly higher than the PjBL. Both classes had medium category in the skill's improvement. With "Very Large" effect size, the operationalization implementation of PjBL-STEM model had very large impact than PjBL class in increasing students' problem solving skills. The final questionnaire revealed students in both classes had positive response (Agree and Strongly Agree), which were quite similar towards the implementation of the learning model

Building conceptual understanding of students on laws of newton through argument-driven inquiry

Newton's law plays an important role in learning mechanics and explaining real-life phenomena, but students find it difficult to understand. This study aimed to build students' conceptual understanding and to describe students' difficulties with Newton's law after the Argument-Driven Inquiry (ADI) model learning process is implemented. This study used a quasi-experiment (pre-and post-test) design Pre- and Post-test design with the research subject of 50 tenth grade students in public high schools in Pamekasan, Indonesia. Students are distributed into the experimental class (ADI learning) and the control class (conventional learning). The instrument of this study was Newton's law understanding test in the form of reasoned multiple-choice questions with a reliability of 0.82. The research data were analyzed by the Mann-Whitney U test, ANCOVA, N-gain, d-effect, and a description of the reasons for students' answers. The results showed that conceptual understanding was not influenced by the initial state, but rather influenced by the ADI model. Improved conceptual understanding in the experimental class (medium category) is higher one level compared to the control class (low category). After the learning process, both classes students still have difficulty in the concept of a=F/m and its application, and objects in an inertial frame. However, the difficulties of the conventional class students are compounded by the friction, and Newton's I, II, and III laws concepts

A high-finesse Fabry-Perot cavity with a frequency-doubled green laser for precision Compton polarimetry at Jefferson Lab

A high-finesse Fabry-Perot cavity with a frequency-doubled continuous wave green laser (532~nm) has been built and installed in Hall A of Jefferson Lab for high precision Compton polarimetry. The infrared (1064~nm) beam from a ytterbium-doped fiber amplifier seeded by a Nd:YAG nonplanar ring oscillator laser is frequency doubled in a single-pass periodically poled MgO:LiNbO$_{3}$ crystal. The maximum achieved green power at 5 W IR pump power is 1.74 W with a total conversion efficiency of 34.8\%. The green beam is injected into the optical resonant cavity and enhanced up to 3.7~kW with a corresponding enhancement of 3800. The polarization transfer function has been measured in order to determine the intra-cavity circular laser polarization within a measurement uncertainty of 0.7\%. The PREx experiment at Jefferson Lab used this system for the first time and achieved 1.0\% precision in polarization measurements of an electron beam with energy and current of 1.0~GeV and 50~$\mu$A.Comment: 20 pages, 22 figures, revised version of arXiv:1601.00251v1, submitted to NIM

Precision Measurements of Aⁿ1 in the Deep Inelastic Regime

We have performed precision measurements of the double-spin virtual-photon asymmetry A1 on the neutron in the deep inelastic scattering regime, using an open-geometry, large-acceptance spectrometer and a longitudinally and transversely polarized 3He target. Our data cover a wide kinematic range 0.277 \u3c= x \u3c= 0.548 at an average Q2 value of 3.078(GeV/c)2, doubling the available high-precision neutron data in this xrange. We have combined our results with world data on proton targets to make a leading-order extraction of the ratio of polarized-to-unpolarized parton distribution functions for up quarks and for down quarks in the same kinematic range. Our data are consistent with a previous observation of an An1zero crossing near x = 0.5. We find no evidence of a transition to a positive slope in (Δd + Δ¯d)/(d +¯d) up to x = 0.548