The Effect of English Camp Program in Public Speaking of STKIP Al Maksum Students

The objective of the research is to improve speaking skill of English House Course students through English camp strategy. This was an pre-experimental research using one group on pre-test and post-test design, the population of this research was the students of English House Course which has 80 students. Because the total number of the population was big enough, the researcher took 20 samples and applied random sampling technique; it means that one class of the population were taken as samples and the data was analyzed into percentage, mean score analyzes and the value of the t-test. The result of the data analyzes shows that the students’ achievement on the pre-test was 71,7 and post-test was 86,1. This shows that English camp is a good strategy in English learning process at the students of English House Course Langkat. After analyzing the data by using the t-test formula, the result of the t-test value (11,86) was greater than t-table value (2,093). This indicated that the hypothesis of research is accepted. There is a significant Influence of English camp program towards the students’ achievement in English learning process. The researcher does English camp in English House Course Langkat Kabupaten Enrekang for five days and it gives positive effect of students’ skill in speaking. All item of learning achievement able to improve the students’ speaking skill. Keywords: Speaking Skill;  English Camp &nbsp

An Analysis of STKIP AL MAKSUM Students' Attitude Towards Native and Non Native English Speaking Teachers

There was an argument that native English teachers have many advantages than non-native English teachers and students preferred native to non-native teachers; however, the argument had to be assessed. Many researchers had been exploring students’ perceptions of native and non-native English teachers worldwide in formal education institutions. This study aimed to explore students’ perceptions of native and non-native English teachers in a non-formal education institution. This was a qualitative study based on a descriptive approach conducted using three instruments: close-ended questionnaire, semi-structured interview, and documentation. The study revealed that native and non- native English teachers had their own specific roles in the Indonesian context. Students needed native more than non-native teachers because the latter were bilingual having the same mother tongue as them, and they enabled a successful learning process because of the effective learning strategies they shared. Also, non-native teachers helped students deal with difficulties and challenges in their learning process   Keywords: Perception, native English teachers, non-native English teacher

Implementation Of Quizizz-Based Learning Media In General English Lessons In The Stkip Al Maksum Elementary School Teacher Education Study Program

This study investigates the utilization or implementation of Quizizz, an internet-based questionnaire platform, as an instructional tool for general English courses in the STKIP AL Maksum Primary School Teacher Education Study Program. The objective of this study is to examine the media planning procedure, its execution, and the determinants that impact the utilization of Quizizz. This study employs a qualitative descriptive methodology and collects data through triangulation techniques, including documentation, interviews, and observation. Quizizz is a game-based learning platform that enhances student engagement and offers adaptable assessment alternatives, according to the literature review. The results of studies indicate that Quizizz has a beneficial impact on student motivation by enhancing the relevance and interest of the learning process. In spite of this, obstacles associated with technological infrastructure must be taken into account in order to achieve maximum efficacy. This study enhances comprehension regarding the incorporation of technology in English education, placing particular emphasis on the significance of cutting-edge learning tools like Quizizz in contemporary educational advancements. Key words:  Quizizz, Media, General English

Exploring Interactive and Innovative Learning Media in EFL Classroom: A Students' Perspective

The study on the shift to online learning in English language education due to the COVID-19 pandemic. The study examines the perceptions of twenty English Department students from STKIP Al Maksum regarding the use of interactive applications, particularly Kahoot, in their learning. A quantitative survey with a ten-item questionnaire was employed to gather data. The findings suggest that students perceive Kahoot as enhancing their enjoyment, learning perception, effectiveness, and motivation. The study concludes that applications like Kahoot and Quizzes contribute to increased student activity in language classes and highlights the need for further research on their impact on critical thinking, engagement, and educational outcomes

The Students' Grammatical Mistakes in Writing Narrative Text

Students made errors in writing narrative text. Two reasons why students made errors were because less grammar mastery and confuses to differentiate the verb. This writing is to find out the grammatical errors. The method of research is descriptive quantitative. The process of data is analyzed by reading students’ writing first, identifying, classification, tabulating, describing, and taking conclusion about the errors. After analyzing the data, it was found that students made errors in omission, addition, misformation, and misordering categories. The highest frequency of item error was in using a verb tense with a total of 61 errors. Meanwhile, the lowest frequency of item errors was in using adverbs and adjective with a total of 6 errors. The total of the errors was 204. Keywords: Conjunction; Article; To be; Verb Tense; Pronoun. &nbsp

Cluster Abell 520: a perspective based on member galaxies. A cluster forming at the crossing of three filaments?

The connection of cluster mergers with the presence of extended, diffuse radio sources in galaxy clusters is still debated. An interesting case is the rich, merging cluster Abell 520, containing a radio halo. A recent gravitational analysis has shown in this cluster the presence of a massive dark core suggested to be a possible problem for the current cold dark matter paradigm. We aim to obtain new insights into the internal dynamics of Abell 520 analyzing velocities and positions of member galaxies. Our analysis is based on redshift data for 293 galaxies in the cluster field obtained combining new redshift data for 86 galaxies acquired at the TNG with data obtained by CNOC team and other few data from the literature. We also use new photometric data obtained at the INT telescope. We combine galaxy velocities and positions to select 167 cluster members around z~0.201. We analyze the cluster structure using the weighted gap analysis, the KMM method, the Dressler-Shectman statistics and the analysis of the velocity dispersion profiles. We compare our results with those from X-ray, radio and gravitational lensing analyses. We find that Abell 520 is definitely a very complex system. Our results suggest that we are looking at a cluster forming at the crossing of three filaments of the large scale structure. In particular, we detect a filament aligned with the LOS and projected onto the center of the forming cluster. It might explain the apparent massive dark core shown by gravitational lensing analysis.Comment: 18 pages, 16 figures, 4 tables. Accepted for publication on A&

NoSOCS in SDSS. I. Sample Definition and Comparison of Mass Estimates

We use Sloan Digital Sky Survey (SDSS) data to investigate galaxy cluster properties of systems first detected within DPOSS. With the high quality photometry of SDSS we derived new photometric redshifts and estimated richness and optical luminosity. For a subset of low redshift ($z \le 0.1$) clusters, we have used SDSS spectroscopic data to identify groups in redshift space in the region of each cluster, complemented with massive systems from the literature to assure the continuous mass sampling. A method to remove interlopers is applied, and a virial analysis is performed resulting in estimates of velocity dispersion, mass, and a physical radius for each low-$z$ system. We discuss the choice of maximum radius and luminosity range in the dynamical analysis, showing that a spectroscopic survey must be complete to at least M$^*+1$ if one wishes to obtain accurate and unbiased estimates of velocity dispersion and mass. We have measured X-ray luminosity for all clusters using archival data from RASS. For a smaller subset (twenty-one clusters) we selected temperature measures from the literature and estimated mass from the M-T$_X$ relation, finding that they show good agreement with the virial estimate. However, these two mass estimates tend to disagree with the caustic results. We measured the presence of substructure in all clusters of the sample and found that clusters with substructure have virial masses higher than those derived from T$_X$. This trend is not seen when comparing the caustic and X-ray masses. That happens because the caustic mass is estimated directly from the mass profile, so it is less affected by substructure.Comment: 21 pages, 17 figures, 5 tables, Accepted to MNRA

Study of isotopic fractions and abundances of the neutron-capture elements in HD 175305

The chemical abundances of metal-poor stars are excellent sources of information for setting new constraints on models of Galactic chemical evolution at low metallicities. In this paper we present an attempt to fit the elemental abundances observed in the bright, metal-poor giant HD 175305, and derive isotopic fractions using a parametric model. The observed abundances can be wellmatched by the combined contributions froms- and r-processmaterial. The component coefficients of the r- and s-processes are C1 = 3.220 and C3 = 1.134, respectively. The Smisotopic fraction in this star where the observed neutron-capture elements are produced is predicted to be f 152+154 =0.582,which suggests that, even though the r-process is predominantly responsible for the synthesis of the neutron-capture elements in the early Galaxy, the onset of the s-process had already occurred at this metallicity of [Fe/H] = -1.6

The barium isotopic mixture for the metal-poor subgiant star HD140283

Current theory regarding heavy element nucleosynthesis in metal-poor environments states that the r-process would be dominant. The star HD140283 has been the subject of debate after it appeared in some studies to be dominated by the s-process. We provide an independent measure of the Ba isotope mixture in HD140283 using an extremely high quality spectrum and an extensive chi^2 analysis. We exploit hyperfine splitting of the BaII 4554 \AA\ and 4934 \AA\ resonance lines in an effort to constrain the isotope ratio in 1D LTE. Using the code ATLAS in conjunction with KURUCZ06 model atmospheres we analyse 93 Fe lines to determine the star's macroturbulence. With this information we construct a grid of Ba synthetic spectra and, using a \chi^2 code, fit these to our observed data to determine the isotopic ratio, fodd, which represents the ratio of odd to even isotopes. We also analyse the Eu lines. We set a new upper limit of the rotation of HD140283 at vsin{i}\leq3.9\kms, a new upper limit on [Eu/H] < -2.80 and abundances [Fe/H] = -2.59\pm0.09, [Ba/H] = -3.46\pm0.11. This leads to a new lower limit on [Ba/Eu] > -0.66. We find that, in the framework of a 1D LTE analysis, the isotopic ratios of Ba in HD140283 indicate fodd=0.02\pm0.06, a purely s-process signature. This implies that observations and analysis do not validate currently accepted theory. We speculate that a 1D code, due to simplifying assumptions, is not adequate when dealing with observations with high levels of resolution and S/N because of the turbulent motions associated with a 3D stellar atmosphere. New approaches to analysing isotopic ratios, in particular 3D hydrodynamics, need to be considered when dealing with the levels of detail required to properly determine them. However published 3D results exacerbate the disagreement between theory and observation.Comment: 16 pages, 10 figures, 7 tables, 1 online appendix Accepted by A&

Advanced Compton Telescope Designs and SN Science

The Advanced Compton Telescope (ACT) has been suggested to be the optimal next-generation instrument to study nuclear gamma-ray lines. In this work, we investigate the potential of three hypothetical designs of the ACT to perform SN science. We provide estimates of 1) the SN detection rate, 2) the SN Ia discrimination rate, and 3) which gamma-ray lines would be detected from specific supernova remnants. We find that the prompt emission from a SN Ia is such that it is unlikely that one would be within the range that an INTERMEDIATE ACT would be able to distinguish between explosion scenarios, although such an instrument would detect a handful of SNRs. We further find that the SUPERIOR ACT design would be a truly breakthrough instrument for SN science. By supplying these estimates, we intend to assist the gamma-ray astrophysics community in deciding the course of the next decade of gamma-ray SN science.Comment: 10 pages, accepted for publication in New astronomy Reviews (Astronomy with Radioactivities III