State University of Semarang

About: State University of Semarang is a education organization based out in Semarang, Indonesia. It is known for research contribution in the topics: Population & Curriculum. The organization has 7737 authors who have published 7790 publications receiving 38055 citations. The organization is also known as: Universitas Negeri Semarang.

Investigating the Effects of Reader Response Journals on the Quality of Teacher Trainees’ Responses to Literary Works

Abstract: The present study investigated the effects of writing reader response journals (RRJ) on the quality of responses to literary works assigned The study is underpinned by Rosenblatt’s Reader Response Theory, literacy principles, and sociocultural views The study assumes that readers’ responses to literature involve critical and aesthetic reading-writing (literacy) events that are collaboratively constructed The study involved an intact group (N=22) comprising EFL teacher trainees of a private education college in Ciamis, Indonesia, taking Literature Criticism subject This time series pre-experimental study entailed repeated measurements of critical reading and assessments of aesthetic responses before and after the treatment Before the treatment, New Critics’ conventional text-based teaching strategies were given Findings of the study suggest that, quantitatively, as ANOVA proved, the use of reader response journal gave effects on the constantly better achievements, and, as the Paired t-Test indicated, the treatment resulted in better quality Additionally, qualitative evidences revealed from observation, interviews, and document analysis showed better quality of the trainees’ aesthetic experiences reflecting varied reader response strategies The study recommends further studies develop reader response-based literature teaching model across contexts in reference to gender issues

Room-temperature photoluminescence of Mg-doped GaN thin films grown by plasma-assisted MOCVD

Abstract: The growth of Mg-doped GaN thin films by metalorganic chemical vapor deposition (MOCVD) using NH3 and Cp2Mg as a source of nitrogen and Mg, respectively, usually produces Mg–H complexes, which hinder the activation of Mg as shallow acceptor centers. Therefore, post-growth treatments are commonly required to activate these acceptor centers. The presence of Mg dopants in GaN films induces various defect-related emissions whose characteristics depend on the growth method. For this study, we prepared Mg-doped GaN thin films by plasma-assisted MOCVD. A nitrogen-plasma, instead of NH3, served as a nitrogen source to minimize the formation of Mg–H complexes, thereby eliminating the requirement for post-growth treatment. The emission characteristics were obtained by measuring the photoluminescence of the as-grown room-temperature films. Yellow, green, blue, and ultraviolet emission bands are produced by Mg-doped samples with different Mg concentrations produced by Cp2Mg flow rates of 2%, 5%, and 10% of the total flow rate. Low-Mg concentration leads to nitrogen and gallium vacancies, which results in yellow photoluminescence. At higher Mg concentration, the yellow photoluminescence is suppressed and the blue photoluminescence is enhanced because of the incorporation of vacancies by Mg atoms. The analysis of the photoluminescence spectra leads to the proposed band diagrams for Mg-doped GaN with varying Mg concentration.

The Effect of Hydrothermal Holding Time on The Characterization of Hydroxyapatite Synthesized from Green Mussel Shells

Abstract: Hydroxyapatite is generally utilized in medical fields especially as a substitute to bone and teeth. Hydroxyapatite nanoparticles have been succesfully synthesized from green mussel shells as a source of calcium carbonate by hydrothermal method. The green mussel shells were calcined, hydrated, and undergone carbonation to form Precipitated Calcium Carbonate (PCC). The PCC of shells was then added with (NH4)2HPO4 with the mole ratio of Ca/P = 1.67. Hydrothermal reaction was carried out at 160oC with variations of the holding time (14, 16, and 18 hrs). The formation of hydroxyapatite was characterized using XRD and SEM-EDX. The XRD patterns showed that the products were hydroxyapatite crystals. The morphology of hydroxyapatite observed using SEM showed that the crystal uniformity of hydroxyapatite. The best result was obtained at 18 hrs holding time of hydrothermal because the hydroxyapatite produced has the highest purity without any impurities phase.

Expert System Diagnosis of Bowel Disease Using Case Based Reasoning with Nearest Neighbor Algorithm

Abstract: Expert System is a computer system that has been entered the base of knowledge and set of rules to solve problems like an expert. One method in the expert system is Case Based Reasoning. To strengthen the retrieve stage of this method, the Nearest Neighbor algorithm is used. Bowel is one of the digestive organs susceptible to disease. The purpose of this study is to implement expert systems using Case Based Reasoning with Nearest Neighbor algorithm in diagnosing bowel disease and determine the accuracy of the system. Data used in this research are 60 data, obtained from medical record RSUD dr. Soetrasno Rembang. Variables used are general symptoms and types of diseases. The level of system accuracy resulting from scenario are 40 data as source case, and 20 data as target case that is equal to 95%.

In Human-Capital We Trust, on Developmentalism We Act: The Case of Indonesian Early Childhood Education Policy

Abstract: This chapter reviews the use and influence of human capital and developmental theories in Indonesian early childhood education (ECE) policy . As my colleague and I have mentioned elsewhere (Formen, The political landscape of early childhood education in Indonesia (Unpublished Master’s Thesis), Monash University, Melbourne, 2008; Formen and Nuttall, International Journal of Early Childhood, 46(1), 15–31, 2014) human capital and developmentalist thoughts, in addition to religion, are the two major Indonesian ECE policy rationales. Notwithstanding its massive repercussions in the policy documents, these two discourses and theoretical frameworks, as the rest of this piece shows, have been used differently. While developmentalism is used as both a policy justification and practical reference, human capital thoughts seem to occupy the macro policy documents, and have become blurred across more micro, practical directives. If the economic future benefit is one of the reasons for the provision of ECE, it should practically promote to its beneficiary (children) the values, knowledge, and skills, necessary for their economic survival and success.