Showing papers by "State University of Semarang published in 2015"

Pengembangan four-tier diagnostic test untuk mengungkap miskonsepsi fisika siswa sma kelas x

Abstract: Penelitian ini mengembangkan four-tier diagnostic test untuk mendeskripsikan prototype , menentukan kevalidan, reliabilitas, dan karakteristik butir soal four-tier diagnostic test , serta mendeskripsikan profil miskonsepsi siswa pada materi Optik Geometri. Jenis penelitian adalah Research and Development (R&D). Subjek uji coba adalah siswa kelas XI dan subjek uji lapangan akhir adalah siswa kelas X SMA Negeri 2 Semarang. Metode yang digunakan adalah dokumentasi, wawancara, angket, dan tes. Tes diagnostik terdiri atas empat tingkatan, yaitu: pertanyaan dengan satu kunci jawaban dan tiga pengecoh, tingkat keyakinan jawaban, alasan, dan tingkat keyakinan alasan. Instrumen yang dihasilkan terdiri atas kisi-kisi, petunjuk pengerjaan, soal tes, kunci jawaban, lembar jawab, pedoman penskoran, dan pedoman interpretasi hasil. Pengujian validitas oleh validator ahli menunjukkan instrumen yang dikembangkan valid. Reliabilitas tes yang dikembangkan sebesar 0,983. Soal tes terdiri atas tiga butir soal mudah, 43 butir soal sedang, dan lima butir soal sukar. Soal tes memiliki daya pembeda dengan kategori sembilan butir soal diperbaiki, 24 butir soal diterima tetapi perlu diperbaiki, dan 18 butir soal diterima dengan baik. Terdapat 82 temuan miskonsepsi siswa dari 11 sub pokok bahasan pada materi Optik Geometri. Miskonsepsi tertinggi ditemukan pada konsep pemantulan baur. Miskonsepsi terendah ditemukan pada konsep perbesaran bayangan pada lup. This research developed four-tier diagnostic test. The objective of this research is to describe prototype, determine validity, reliability, and characteristics of four-tier diagnostic test, also to describe profile misconceptions in subject of Geometric Optics. Type of research is Research and Development (R&D). Sample used are students grade X and XI. The method used is documentation, interview, questionnaire, and test. Diagnostic test consist of four tiers. 1 st tier is answer tier, 2 nd tier is confidence ratings for the answer tier, 3 rd tier is reason tier, and 4 th tier is confidence ratings for the reason tier. Instruments had been produced consist of test lattice, test instructions, questions, answer key, answer sheet, scoring guidelines, and guidelines of result interpretation. Validation result showed that all instruments are valid. Reliability of test is 0.983. The difficulty level consists of 3 items in simple category, 43 items middle, and 5 items difficult. Distinguishing consist of 9 items in repair category, 24 items acceptable but need to be improved, and 18 items acceptable. There were 82 findings misconceptions in subject of Geometric Optics. Highest misconceptions were found in concept of diffuse reflection. Lowest misconceptions were found in concept of shadow magnifications of loupe.

Long term performance of alkali activated slag concrete

Abstract: This paper reports on an experimental program investigating the durability and mechanical properties of alkalit activated slag concrete (AASC). The AASC was prepared using ground granulated blast furnace slag activated by high concentration alkali solution. The mechanical properties were determined by compressive strength and elastic modulus. The durability characteristics of AASC developed a comparable strength to Portland Cement (PC) concrete over the short term. However, the material displayed an increase in voids, as well as a reduction of velocity over time. This could lead to the material displaying inferior performance over longer periods of time.

Efektivitas penggunaan modul terintegrasi etnosains dalam pembelajaran berbasis masalah untuk meningkatkan literasi sains siswa

Abstract: Hasil Observasi menunjukkan bahwa masih sedikit guru yang mengembangkan bahan ajar secara mandiri, pembelajaran sains belum ada kesinambungan antara pengetahuan sains dengan permasalahan dalam kehidupan, serta nilai kearifan lokal. Hal tersebut mengakibatkan pembelajaran kurang bermakna sehingga kemampuan literasi sains siswa masih rendah. Penelitian ini bertujuan untuk mengetahui efektivitas penggunaan modul pada materi kalor terintegrasi etnosains dalam pembelajaran berbasis masalah terhadap literasi sains siswa. Populasi dalam penelitian ini adalah semua kelas VIII SMP 1 Jati Kudus, sampel penelitian adalah siswa kelas VIII C dan VIII F diambil dengan teknik purposive sampling. Jenis penelitian ini adalah quasi eksperimental design dengan desain nonequivalent control group design. Hasil penelitian menunjukkan bahwa rata-rata hasil belajar kelas eksperimen sebesar 81,38% sedangkan rata-rata kelas kontrol sebesar 77,83 dengan N-gain kelas eksperimen sebesar 0,65 kategori sedang dan kelas kontrol 0,56 kategori sedang. Siswa yang diajar dengan menggunakan modul terintegrasi etnosains dalam pembelajaran berbasis masalah memiliki kemampuan literasi sains lebih tinggi dibanding dengan kemampuan literasi sains kelas kontrol. Berdasarkan hasil analisis kemampuan literasi sians siswa diperoleh t hitung sebesar 2,09 dan t tabel sebesar 1,67, sehingga dapat disimpulkan dari kedua analisis di atas bahwa penggunaan modul terintegrasi etnosains dalam pembelajaran berbasis masalah efektif terhadap kemampuan literasi sains siswa. The result of observation shows that there are still some few teachers who develop an independent teaching material, there is not any coherence between science and students’ scientific attitude, also local sapiental authority. These problems cause a less attracted teaching-learning process and less activating students so that the students’ literacy science ability is still low. This study aims to find the effectiveness of using the etnosains integrated handout material of heat in the learning based problem to increase students’ literacy science. The population of this study is all the eight graders of SMP 1 Jati Kudus, while the sample is all the students of VIII C and VIII F gained by purposive sampling technique. This study belongs to a Quasi Experimental Design with Nonequivalent Control Group Design. The result of the study shows that the experimental group gains 81.38 % in mean, while the control group gains 77.83 with middle category 0.65 as the N-gain of experimental group and middle category 0.56 as the N-gain of the control group. Students in the experimental group who is taught with the etnosains integrated handout in the learning based problem gains higher result than the control group. It means the students’ literacy science ability of the experimental group is also higher than the control group as the students’ literacy science ability is measured by the students’ learning result. According to the analysis of students’ result, it is gained 2.09 in t hitung and 1.67 in t table, so from the two analysis above it can be concluded that the etnosains integrated handout in the learning based problem is effective to use in increasing students’ literacy science ability.

Skill of teacher candidates in integrating the concept of science with local wisdom

Abstract: Learning science is not limited to reviewing the concepts, but strengthens the identity of a nation that has a diversity of cultures. Science learning objectives that have been set in Indonesia, including the student is able to apply the science wisely, to maintain and preserve the cultural survival. The study aims to measure students' ability to relate concepts of science with local knowledge to use mind maps compiled individually. The results showed that 85% of teacher candidates are able to determine the relationship of science and local knowledge correctly. The ability to link the two domains, through the literature review, observation and interviews.

Pengembangan modul ipa terpadu berbasis etnosains tema energi dalam kehidupan untuk menanamkan jiwa konservasi siswa

Abstract: Penelitian didasari dengan masih terbatasnya sumber belajar yang dapat digunakan oleh siswa secara mandiri. Tujuan dari penelitian ini yaitu mengembangkan modul IPA terpadu berbasis etnosains dengan tema energi dalam kehidupan untuk menanamkan jiwa konservasi siswa untuk dapat mengetahui kelayakan, keefektifan modul IPA yang telah dikembangkan, dan untuk mengetahui tingkat karakter konservasi siswa melalui implementasi modul IPA yang dikembangkan. Penelitian menggunakan rancangan penelitian dan pengembangan R&D (Research and Development). Data penelitian yang didapatkan dianalisi secara deskriptif persentase. Hasil uji kelayakan modul IPA terpadu tahap I untuk keseluruhan penilaian pakar dinilai positif dan lolos validasi tahap I. Hasil validasi tahap II oleh pakar isi sebesar 85%, oleh pakar bahasa sebesar 82,5%, dan oleh pakar penyajian sebesar 90%. Berdasarkan hasil analisis hasil belajar, ketuntasan klasikal hasil pre test saat implementasi modul yang dikembangkan sebanyak 4 siswa dari 34 siswa sedangkan ketuntasan klasikal hasil post test sebanyak 30 siswa dari 34 siswa dengan nilai gain sebesar 0,58 denga kriteria sedang. Hasil ini menunjukkan bahwa modul IPA terpadu yang dikembangkan efektif untuk digunakan dalam pembelajaran IPA. Hasil observasi dan angket, tingkat karakter siswa berada pada tingkat mulai berkembang. The research based on the limited source of study that is used by the student. The arm of this research is to develop science modul that based on ethnoscience with a theme is energi in lif for leading the conservation soul of the student get appropriateness, effectivennes of the science modul which has been being developed, and do know the conservation character level. The research uses research and development (R & D). data of the research which is getten by the researcher is analyzed in percentage descriptive. The result of the feasibility test of science module step one for all experts is regarded positive and pass the validation step one. The result of validation step two by the content expert is 85%, the language expert is 82,5%, and the presentation expert is 90%. According to the analysis result of the study, the classical thoroughness pre test when module implementation which is developed 4 students of 34 students while the classical thoroughness post test are 30 students of 34 students with n-gain score are 0,58 in average criteria. This result shows that integrated science module that is effectively for learning science. The result of the observation and questionnaire character of conservatian show that the level of student character begin to increase.

Faktor-faktor yang mempengaruhi pengungkapan corporate social responsibility

Abstract: Penelitian ini dilakukan dengan tujuan untuk memperoleh bukti empiris terkait pengaruh kepemilikan asing, ukuran perusahaan, profitabilitas dan leverage terhadap pengungkapan corporate social responsibility (CSR). Populasi dalam penelitian ini adalah perusahaan manufaktur yang listing di Bursa Efek Indonesia (BEI) pada tahun 2013. Total sampel penelitian adalah 64 perusahaan yang ditentukan melalui metode purposive sampling. Teknik analisis yang digunakan adalah regresi linier berganda yang sebelumnya telah dianalisis dengan uji normalitas dan uji asumsi klasik (multikolinieritas, autokorelasi dan heteroskedastisitas). Hasil penelitian menunjukkan bahwa ukuran perusahaan dan profitabilitas berpengaruh signifikan positif terhadap pengungkapan CSR. Sementara itu, leverage berpengaruh signifikan negatif terhadap pengungkapan CSR. Di sisi lain, kepemilikan asing tidak berpengaruh terhadap pengungkapan CSR. Hasil penelitian secara simultan menunjukkan kepemilikan asing, ukuran perusahaan, profitabilitas dan leverage secara bersama-sama berpengaruh terhadap pengungkapan CSR. Saran dari penelitian ini adalah manajemen perusahaan perlu meningkatkan kesadaran akan pentingnya pelaksanaan dan pengungkapan CSR karena bermanfaat bagi perusahaan dalam jangka panjang. The study is conducted with the purpose of acquiring empirical evidence related to the influence of foreign ownership, company size, profitability and leverage toward the disclosure of corporate social responsibility (CSR). The population were manufacturing companies listed on the Indonesian Stock Exchange (BEI) in 2013. The research total sample was 64 companies determined through purposive sampling. The technique analysis was conducted using multiple linear regression that had been analyzed by normality test and classical assumption (multicollinierity, autocorrelation and heteroscedasticity). Based on the results of this research indicated that the company size and the profitability had a possitive significant effect to CSR disclosure. Meanwhile, the leverage had a negative significant effect to CSR disclosure. In the other hand, the foreign ownership didn’t succeed to give influence for CSR disclosure. Results of this research indicated that the foreign ownership, the company size, the profitability and the leverage simultanly affect CSR disclosure. Advice that can be given of this research is the awareness of the importance of the implementation and disclosure of CSR for the company in the long term needs to be improved.

Analisis determinan financial statement melalui pendekatan fraud triangle

Abstract: Perkembangan persaingan bisnis yang semakin pesat membuat munculnya kejahatan dalam bentuk kecurangan salah satunya adalah financial statement fraud. Hal ini disebabkan para pelaku bisnis harus tetap menyampaikan informasi keuangan secara akurat dan relevan. Penelitian ini bertujuan untuk menganalisis pengaruh external pressure, nature of industry, rasionalisasi dan kualitas audit terhadap financial statement fraud. Populasi dari penelitian ini adalah perusahaan manufaktur yang terdaftar di Bursa Efek Indonesia (BEI) tahun 2010-2012. Teknik pengambilan sampel menggunakan purposive sampling yaitu perusahaan mengalami laba berturut turut selama periode penelitian dan didapatkan hasil sebanyak 29 perusahaan. Pengolahan data menggunakan program SPSS versi 21 dengan analisis statistik deskriptif dan regresi logistik. Berdasarkan hasil dan simpulan penelitian menunjukkan external pressure, nature of industry, rasionalisasi dan kualitas audit tidak berpengaruh terhadap financial statement fraud. Penelitian selanjutnya diharapkan dapat menggunakan variabel-variabel independen lain diluar model penelitian ini dan menggunakan variabel intensitas atau tingkatan untuk mengukur variabel dependen.The development of a business competition which causes of crime like financil statement fraud. This is due to the business people must still reported financial information is accurate and relevant. This study aims to analyze the influence of external pressure, nature of industry, rationalization and quality audit of financial statement fraud. The population of this study is manufacturing companies listed in Indonesia Stock Exchange (IDX) 2010-2012. Sampling technique is purposive sampling, that the company has always gain during the research period. Finally find as many as 29 companies. Processing data using SPSS version 21 with descriptive statistical analysis and logistic regression. Based on the results and conclusions of research shows the external pressure, nature of industry, rationalization and audit quality has no effect on financial statement fraud. Future studies are expected to use another independent variables in this model and using a variable intensity or level to measure the dependent variable.

Potential for Subterranean Termite Attack against Five Bamboo Speciesin Correlation with Chemical Components

Abstract: Bamboo has been a building material for centuries in Indonesia and Japan. Traditional buildings use bamboo to support walls or as an interior material. Recent changes in people's lifestyles and in architectural design have resulted in decreased use of bamboo. However, new housing materials made from bamboo have been developed and new building methods have also been proposed. This study was conducted to evaluate the potential for termite attack against five bamboo species, Gigantochloa apus, G.atroviolacea, G.atter, Dendrocalamus asper, and Bambusa vulgaris. The objectives of the study were to measure the chemical components of these five species in central Java and determine whether they deter attack by the subterranean termite Coptotermes formosanus Shiraki. A factorial experiment with asplit plot design was applied with three replications. Tests of the five bamboo species indicated that extractive soluble in cold water was 5.91%; hot water was 7.70%–10.22%; toluenewas 1.99%–7.49%; holocellulose was 73.54%–80.69%; ash rate was 1.47%–4.21%; solubility in NaOH 1% was 20.93%–29.47%. Cellulosein Bambusa vulgaris (53.34%) and nitrogen content of G.apus (0.33%) were higher than those of G.atrolviolascea, G.atter, and D.asper. The highest lignin content was found in G.atter bamboo (27.33%). Termite damage was related to the chemical composition of the different bamboo species. The correlation between chemical component and termite activity test is also discussed.

Pengembangan komik fisika berbasis android sebagai suplemen pokok bahasan radioaktivitas untuk sekolah menengah atas

Abstract: Pokok bahasan fisika pada sekolah menengah atas seringkali mengandung konsep abstrak, seperti pokok bahasan radioaktivitas. Terlebih, pokok bahasan radioaktivitas berada di akhir semester 2 kelas 12 SMA membuat siswa kurang mendalami pokok bahasan tersebut. Konsep abstrak bisa diatasi dengan menggunakan gambar, gambar dikembangkan dalam bentuk komik agar tercipta suasana belajar yang lebih menyenangkan dan menarik. Penelitian ini mengembangkan komik fisika bersifat mobile untuk sistem operasi Android sebagai suatu suplemen pembelajaran. Kelayakan komik diuji menggunakan metode angket, dokumentasi, serta tes rumpang untuk mengetahui tingkat keterbacaan komik. Angket diberikan kepada responden, yakni siswa kelas 12 SMA, guru fisika, ahli media, serta ahli materi. Penelitian ini menghasilkan aplikasi komik fisika berbasis Android sebagai suplemen pokok bahasan radioaktivitas untuk sekolah menengah atas. Komik yang dihasilkan memiliki tingkat keterbacaan sebesar 80,59%, yakni dalam kriteria tinggi. Skor rata-rata kelayakan komik fisika berbasis Android sebesar 77,91% atau dalam kriteria baik. Berdasakan indikator yang telah ditetapkan dan hasil data responden, maka aplikasi komik fisika berbasis Android layak digunakan sebagai suplemen pembelajaran pada pokok bahasan radioaktivitas untuk sekolah menengah atas.

Analisis kohesi dan koherensi wacana berita rubrik nasional di majalah online detik

Abstract: Majalah Detik adalah majalah mingguan yang membahas tema yang paling hangat dalam minggu tersebut. Majalah detik cukup diminati masyarakat, hal ini ditandai dalam sosial media facebook yang menyukai sebanyak 23.149 dan pengikut di twitter mencapai 79.939. Keberhasilan suatu wacana berita dalam mempengaruhi pembaca ditentukan oleh penggunaan bahasa yang komunikatif, sederhana, dan dinamis. Dalam penyusunan sebuah wacana tulis, khususnya berita, kohesi dan koherensi wacana harus diterapkan. Penelitian ini memiliki hubungan erat dengan bahasa terutama penelitian tentang wacana, salah satunya adalah analisis wacana. Analisis wacana pada penelitian ini adalah analisis kohesi dan koherensi wacana berita rubrik nasional di Majalah Online Detik untuk membuktikan kepaduan wacana antarkalimat yang terbentuk. Masalah yang dikaji dalam penelitian ini, yaitu (1) bagaimana hubungan bentuk atau kohesi pada wacana berita rubrik nasional di Majalah Online Detik Edisi Bulan September- Oktober 2014? (2) bagaimana hubungan makna atau koherensi pada wacana berita rubrik nasional di Majalah Online Detik Edisi Bulan September- Oktober 2014? (3) Jenis kohesi dan koherensi apakah yang sering digunakan, mengapa demikian?Berkaitan dengan masalah tersebut, penelitian ini bertujuan mendeskripsikan kohesi dan koherensipada wacana berita rubrik nasional di Majalah Online Detik Edisi Bulan September- Oktober 2014 serta jenis kohesi dan koherensi yang sering digunakan. Pendekatan yang digunakan dalam penelitian ini adalah pendekatan deskriptif kualitatif. Sumber data dalam penelitian ini wacana berita Majalah Online Detik edisi bulan September sampai dengan Oktober tahun 2014. Data penelitian ini berupa penggalan wacana yang diduga dalam penulisannya menerapkan sarana kohesi dan koherensi. Teknik yang digunakan untuk mengumpulkan data yaitu teknik simak dan catat. Analisis data dalam penelitian ini menggunakan metode agih. Metode hasil analisis menggunakan metode informal. Hasil penelitian ini meliputi (1) penggunaan kohesi, kohesi leksikal meliputi pengulangan, sinonimi, hiponimi, kolokasi, dan ekuivalensi. Kohesi gramatikal meliputi pengacuan, substitusi, pelesapan, konjungsi, inversi, dan pemasifan kalimat. (2) Penggunaan koherensi meliputihubungan perbandingan, hubungan kelonggaran- hasil, hubungan akibat-sebab, hubungan sebab-akibat, hubungan makna alasan (argumentatif), dan hubungan latar-simpulan, (3) kepaduan yang paling banyak ditemukan adalah kohesi berupa kohesi gramatikal yaitu pengacuan dan konjungsi. Sedangkan untuk jenis kohesi dan koherensi lain tidak begitu banyak ditemukan. Berdasarkan temuan tersebut penulis menyarankan kepada redaksi Majalah Online Detik agar lebih memperhatikan penggunaan kohesi dan koherensi dalam penyusunan wacana berita khususnya. Dengan ditemukannya kohesi dan koherensi yang tidak merata yaitu sebagian besar pengacuan dan konjungsi menunjukkan bahwa aspek kebahasaan dari teks berita dari majalah detik masih kurang. Dengan demikian, hendaknya redaksi dalam menyusun berita agar lebih memperhatikan aspek kebahasaan yaitu pada penggunaan sarana kohesi dan koherensi untuk meningkatkan tingkat keterbacaan.

Disclosure Causes of Students Error in Resolving Discrete Mathematics Problems Based on NEA as A Means of Enhancing Creativity

Abstract: This article is based on research cooperation of Foreign Affairs in the first year, which was carried out between the team of lecturers from the Department of Mathematics Education Unnes (Indonesia) with Dr. Chin Kin Eng, a lecture of Mathematics Education from Universiti Malaysia Sabah. The main objective of this research in the first year is to uncover the cause of the students error in resolving Discrete Mathematics by Newman Errors Analysis (NEA). The Results of this research will be used as the basis for the subsequent research that reveal the mathematical creativity of the students. Outcomes of this research is the publication of research results in the International Journal and seminar at the international level. As a qualitative research, data collection through an analysis of the results of tests, questionnaires, observations, and interviews. Data analysis are data reduction, exposure of data, synthesising the data, triangulation, and the inference/verification. According to research, known that students errors in resolving discrete mathematics caused by: (1) the student did not know the meaning of a symbol or an existing term in the problem (Reading Errors), (2) the student did not understand the meaning of the problem, namely the student fails to write what is known and what is being asked (Comprehension Errors), (3) students forgot a formula that will be used or strategy/procedure what to do (Transformation Errors), (4) students could not make the problem-solving algorithms in sequence and correctly (Process Skills Errors), (5) the student could not answer according to the question (Encoding Errors), and (6) the student could not translate well, especially about which was written in English (Language Errors). Errors caused by carelessness students (Careless Errors) was not found. After giving Learning Therapy for the provision to resolve a problem through the algorithm and the correct sequence, the causes of the error of some students could be minimized, so that the number of students who were experiencing errors could also be reduced. Results of this research became the basis for continued research in the second year, which will be revealed and developed the mathematical creativity of students with prepare advanced research instruments.

A new approach for determining fuzzy chromatic number of fuzzy graph

Abstract: A fuzzy graph referred in this paper is a graph with crisp vertex set and fuzzy edge set. The most important issue in the coloring problem of fuzzy graph is to construct a method for finding the chromatic number of fuzzy graph. Most of the methods that many researchers had been done still result crisp chromatic number. In this paper, we propose a new approach to determine fuzzy chromatic set of fuzzy graph. In our proposed method, the fuzzy chromatic set of fuzzy graph is constructed through its δ-chromatic number. Further, we investigate some properties of the fuzzy chromatic set of fuzzy graph. We show that fuzzy chromatic set of fuzzy graph is a discrete fuzzy number and then it is called by fuzzy chromatic number. To the best of our knowledge, no one has determined fuzzy chromatic number of fuzzy graph through its δ-chromatic number before now. Finally, a fuzzy chromatic algorithm based on the new approach is proposed.

Peran desain grafis pada label dan kemasan produk makanan umkm

Abstract: Strategi pemasaran memegang kendali yang sangat penting dalam keberhasilan penerimaan produk di masyarakat, namun banyak UMKM yang mengabaikan hal tersebut. Label dan kemasan merupakan salah satu kunci bagi UMKM untuk lebih meningkatkan nilai jual produk. Studi menunjukkan kemasan yang baik akan meningkatkan nilai jual produk 40% - 100% dari harga awal. Tampilan grafis yang memiliki nilai estetis dan memuat informasi yang memadai menjadi representasi dari produk yang ditawarkan. Desain grafis pada label dan kemasan membentuk kontak pribadi antara produsen dan konsumen serta menciptakan efek psikologis tertentu pada individu. Elemen yang mencakupi warna, teks dan elemen visual adalah elemen yang saling melengkapi dalam membentuk persepsi konsumen terhadap suatu produk. Kemasan dapat meraih perhatian konsumen selama beberapa detik, oleh karena itu hirarki visual yang perlu diperhatikan adalah visibilitas merk, warna yang khas, dan elemen ilustrasi yang unik.

Analisis determinan kemiskinan di provinsi jawa tengah

Abstract: This study aims to determine factors of poverty in the province of Central Java period 2008 to 2012. Central Java province was chosen because it has the second highest poverty level among 33 provinces in Indonesia. In this study, the factors that infl uence poverty are the numbers of population live in poverty, unemployment, Gross Regional Domestic Product (GDP) and literacy rate. The method used is the panel data regression. Panel data is the data that combines the time series and cross-section data. In this study, it is found that unemployment, GDP and total population have signifi cant aff ect on poverty in the province of Central Java. Penelitian ini bertujuan untuk mengetahui determinan kemiskinan di provinsi Jawa Tengah periode 2008 sampai 2012. Dipilihnya Jawa Tengah karena dari 33 provinsi yang ada di Indonesia, Jawa Tengah merupakan provinsi dengan penduduk miskin terbanyak ke dua. Dalam penelitian ini faktor-faktor yang mempengaruhi kemiskinan di antaranya yaitu jumlah penduduk miskin, banyaknya pengangguran, Pendapatan Domestik Regional Bruto (PDRB) dan Angka Melek Huruf dan semua variable tadi dipilih periode 2008 sampai 2012. Metode penelitian yang digunakan yaitu metode regresi data panel. Data panel merupakan data yang menggabungkan antara data time series dan data cross-section. Dalam penelitian ini pula ditemukan bahwa pengaruh pengangguran, PDRB dan jumlah atau populasi penduduk Jawa Tengah signifi kan. Artinya berpengaruh pada kemiskinan di provinsi Jawa Tengah.

Pengembangan lembar kerja praktikum siswa terintegrasi guided inquiry untuk keterampilan proses sains

Abstract: Penelitian ini merupakan penelitian pengembangan yang bertujuan untuk mengembangkan Lembar Kerja Praktikum Siswa (LKPS) terintegrasi guided inquiry untuk keterampilan proses sains siswa yang layak, efektif, praktis dan mendapat respon positif dari penggunanya. Desain penelitian yang digunakan yaitu Research and Development . Desain ini menggunakan Three-D Models yaitu Define, Design, and Develop. Pengumpulan data pada penelitian ini menggunakan metode observasi, wawancara, tes, angket dan dokumentasi. Data hasil penelitian dianalisis menggunakan metode analisis deskriptif kuantitatif. Secara kuantitatif, data hasil penelitian dianalisis dengan cara menghitung rerata skor dan menentukan kriteria pada interval kelas tertentu. Hasil analisis data tersebut menunjukkan bahwa LKPS memperoleh skor rerata validasi sebesar 76 sehinga dinyatakan layak secara teoretis. LKPS dinyatakan efektif karena 28 siswa mencapai nilai Kriteria Ketuntasan Minimal (KKM) pada hasil tes dan keterampilan proses sainsnya mendapat predikat baik. Selain itu, data angket menunjukkan bahwa LKPS dinyatakan praktis dan mendapat respon baik dari penggunanya. Berdasarkan hasil analisis data dapat disimpulkan bahwa LKPS terintegrasi guided inquiry untuk keterampilan proses sains dinyatakan layak, efektif, praktis dan mendapat respon positif dari penggunanya sehingga dapat diterapkan dalam pembelajaran kimia.

Dukungan keluarga dan tokoh masyarakat terhadap keaktifan penduduk ke posbindu penyakit tidak menular

Abstract: Jumlah posbindu PTM di Kota Semarang semakin meningkat, tetapi jumlah kunjungannya semakin menurun dari tahun 2012 sebesar 470 orang menjadi 398 orang tahun 2013. Salah satu permasalahan di masyarakat adalah kurangnya dukungan dan kepedulian dari anggota keluarga dan tokoh masyarakat terhadap pemeriksaan kesehatan secara rutin yang berdampak pada tingkat kunjungan masyarakat ke posbindu PTM. Tujuan dari penelitian ini untuk mengetahui hubungan antara dukungan keluarga dan dukungan tokoh masyarakat dengan keaktifan penduduk ke kegiatan posbindu PTM di Kota Semarang. Desain penelitian pada tahun 2014 ini menggunakan metode analitik observasional dengan pendekatan cross sectional study. Sampel berjumlah 258 orang yang diambil dengan teknik purposive sampling. Analisis data menggunakan analisis univariat dan analisis bivariat (chi square test dengan α = 0,05). Hasil penelitian menunjukkan bahwa faktor dukungan keluarga (p value = 0,0001) dan dukungan tokoh masyarakat (p value = 0,001) berhubungan dengan keaktifan penduduk ke kegiatan posbindu PTM di Kota Semarang. Simpulan dari hasil penelitian bahwa ada hubungan antara dukungan keluarga dan dukungan tokoh masyarakat dengan keaktifan penduduk ke kegiatan posbindu PTM di Kota Semarang. The number of posbindu NCD in Semarang City is increased, but the number of visits decreased in 2012 from 470 people to 398 people in 2013. A problem that family support and community leader care had less to check their health as a whole, so public visit rate had less. The purpose of the research was to determine associated of family support and community leader support with the actively of inhabitants to posbindu NCD in Semarang City. Study design at 2014 used observational analytical method with cross sectional study approach. The sample totaled by 258 people by purposive sampling. Data analysis was performed using univariate and bivariate (chi square test with α = 0.05). The results showed that family support (p value = 0.0001) and community leader support (p value = 0.001) have correlation with the actively of inhabitants to posbindu NCD in Semarang City are. A summary result that there were correlation between family support and community leader support with the actively of inhabitants to posbindu NCD in Semarang City

On Integration of Geodetic Observation Results for Assessment of Land Subsidence Hazard Risk in Urban Areas of Indonesia

Abstract: Several large urban areas in Indonesia, i.e. Jakarta, Bandung and Semarang, have experienced land subsidence. These urban land subsidences are mainly caused by the combination of excessive groundwater extraction, natural consolidation of alluvium soil, and load of constructions (i.e. settlement of high compressibility soil). The impact of land subsidence can be already seen in several forms, such as cracking of buildings and infrastructure, the wider expansion of (coastal) flooding areas, and increased inland sea water intrusion. It also badly influence the quality of living environment and life in the affected areas. Land subsidence in Jakarta has been studied using leveling surveys, GPS surveys, and InSAR techniques. The results obtained from these technique over the period between 1982 and 2011 show that observed subsidence rates in Jakarta are about 1–15 cm/year, and can reach up to 20–28 cm/year at certain location and certain period. In Bandung basin, land subsidence phenomenon has been studied using GPS surveys and InSAR methods. Based on these methods, it was found that during the period between 2000 and 2011, several locations in the Bandung basin have experienced subsidence, with an average rate of about 8 cm/year and can reach up to about 23 cm/year. In Semarang, land subsidence has been studied using Levelling surveys, GPS surveys, Microgravity surveys and InSAR technique. Based on the estimation from those measurement methods, land subsidence with rates of up to about 19 cm/year were observed during the period of 1999 up to 2011. The observed land subsidence rates in Jakarta, Bandung and Semarang in general have spatial and temporal variations. Results from various geodetic observation methods can give a better picture on the magnitudes and rates of land subsidence, and its variation both in spatial and temporal domain. Integration of those results however, can not always be performed in an ideal manner, since each geodetic method has its own operational strengths and weaknesses in large urban environment. Open image in new window Fig. 1 Large cities of Indonesia affected by land subsidence phenomena, i.e. Jakarta, Bandung and Semarang, all located in Java island

Pembelajaran kebencanaan alam bervisi sets terintegrasi dalam mata pelajaran fisika berbasis kearifan lokal

Abstract: Kearifan lokal merupakan nilai-nilai yang berlaku dalam suatu mayarakat, yang diyakini kebenarannya dan menjadi acuan dalam bertingkah laku sehari-hari, serta menggambarkan cara bersikap dan bertindak untuk merespons perubahan-perubahan yang khas dalam ingkungan fisik maupun kultural. Kearifan lokal yang ada di setiap daerah di Inonesia merupakan satu aset atau harta terpendam bagi bangsa Indonesia yang harus digali dan terus dipertahankan sebagai satu kesatuan dalam hidup dan kehidupan semua masyarakat Indonesia. Tujuan penulisan artikel ini adalah menentukan cara (1) menanamkan kearifan lokal bagi generasi muda, (2) mendesiminasikan kearifan lokal dilakukan melalui pendidikan. Metode penelitian analisis kepustakaan. Hasil analisis menyimpulkan salah satu cara menanamkan kearifan lokal dengan mengaitkannya pada pembelajaran Fisika terintegrasi kebencanaan alam bervisi Science Environment Technology and Society (SETS). Desiminasi kearifan lokal dapat dilakukan melalui pendidikan, termasuk dalam pembelajaran dan penelitian kependidikan, serta penulisan artikel di media. Local wisdom is the values prevailing in a society, which is believed to be true and become a reference in the daily activity, and describe how to behave and act in response to specific changes in physical and cultural environment. Local wisdom in every region in Indonesia is an asset or a hidden treasure for the nation of Indonesia to be collected and maintained as a unity in life and the lives of all the people of Indonesia. The purpose of writing this article is to determine how to (1) embed local wisdom to the younger generation, (2) disseminate local wisdom through education. Analysis of the literature research method. Results of the analysis concluded one way of instilling local wisdom by associating the natural disaster integrated physics learning in the vision of Environment Science Technology and Society (SETS). Dissemination of local wisdom can be done through education, including the teaching and educational research, as well as writing articles in the media.

Implementasi Algoritma Naive Bayes Classifier Dalam Pengklasifikasian Teks Otomatis Pengaduan Dan Pelaporan Masyarakat Melalui Layanan Call Center 110

Abstract: Kepolisian Negara Republik Indonesia merupakan salah satu lembaga yang menyediakan layanan pelaporan dan pengaduan melalui call center 110 dengan mengirimkan teks singkat kepada staff terdekat dengan Tkp, kasus yang dilaporkan atau diadukan akan segera ditinjau dan ditindak lanjut. Banyaknya data yang masuk ke dalam sistem dengan pengklasifikasian kasus secara manual membuat petugas kesulitan dalam pengolahan data, oleh karena itu dibutuhkan sistem klasifikasi teks pelaporan dan pengaduan melalui layanan 110 . Pada penelitian ini metode yang digunakan dalam pengklasifikasi teks otomatis menggunakan metode Naive bayes Classifier. Metode Naive Bayes Classifiers yaitu salah satu metode klasifikasi teks berdasarkan probabilitas kata kunci dalam membandingkan dokumen latih dan dokumen uji. Keduanya dibandingkan melalui beberapa tahap persamaan, yang akhirnya diperoleh hasil probabilitas tertinggi yang ditetapkan sebagai kategori dokumen baru.Hasil penelitian yang dilakukan oleh peneliti yaitu pengklasifikasian teks otomatis pelaporan dan pengaduan mayarakat dengan menggunakan metode Naive bayes Classifiers menghasilkan rata-rata akurasi yang tinggi,yaitu recall 93%, precission 90 %,dan f-measure 92%.

Pengaruh Struktur Modal, Ukuran Perusahaan, Asimetri Informasi, dan Profitabilitas terhadap Kualitas Laba

Abstract: Penelitian ini bertujuan untuk menganalisis pengaruh struktur modal, ukuran perusahaan, asimetri informasi, dan profitabilitas terhadap kualitas laba. Populasi penelitian ini adalah seluruh perusahaan manufaktur yang terdaftar di Bursa Efek Indonesia (BEI) yang berjumlah 123 perusahaan. Pengambilan sampel dilakukan dengan mengunakan metode purposive sampling dan diperoleh sebanyak 59 perusahaan. Data di analisa dengan menggunakan Regresi Linier Berganda. Hasil analisis data menunjukkan bahwa struktur modal yang diproksikan dengan leverage dan profitabilitas yang diproksikan oleh return on asset (ROA) memiliki pengaruh dengan kualitas laba. Sementara itu ukuran perusahaan yang diproksikan dengan Ln Log total Asset dan asimetri informasi yang diproksikan dengan Spread tidak memiliki pengaruh dengan kualitas laba. Hasil penelitian secara simultan menunjukkan bahwa seluruh variable independen berpengaruh terhadap kualitas laba. Penelitian selanjutnya bisa menggunakan proksi lain untuk mengukur kualitas laba seperti Corporate Governance. This study aimed to analyze the effect of capital structure, company size, asymmetry of information, and the profitability of the quality of earnings. The study population was all companies listed on the Indonesian Stock Exchange (BEI), which amounted to 123 companies. Sampling was done by using purposive sampling method and obtained as many as 59 companies. Data were analyzed using multiple linear regression. The result showed that the capital structure and leverage proxies with proxy profitability by return on assets (ROA) has influence with the quality of earnings. While the size of the company which is proxied by Log Ln total assets and information asymmetry Spread proxy with no influence by the quality of earnings. Simultaneous research results show that all the independent variables affect the quality laba. Future studies could use another proxy to measure the quality of earnings as Corporate Governance.

Faktor-faktor Penentu Profitabilitas Bank Syariah di Indonesia

Abstract: This research aimed to determine the influence of third party funds (DPK), Non Performing Financing (NPF), Financing to Deposit Ratio (FDR), Operating Expenses to Operating Income (BOPO), SWBI (Indonesian Wadiah Certificates Bank ) toward Return on Assets (ROA ) on Syariah Banks in Indonesia. The population in this study were all registered Syariah banking at Bank Indonesia, those are 11 Syariah Banks (BUS). The sampling technique used was purposive sampling criteria, which result were 4 Syariah banks. This study was using multiple linear regression analysis. Data used in this research were obtained from Bank Indonesia during the period of 2011 to 2013. Data analysis methods used in the study were multiple linear regression analysis, the classical assumption test, and test hypotheses. The result of the research show that the DPK, NPF, FDR, ROA and SWBI simultaneously affect the ROA. Data analysis methods used in the study were multiple linear regression analysis, the classical assumption test, and test hypotheses. The result of the research show that the DPK, NPF, FDR, ROA and SWBI simultaneously affect the ROA

Analisis rasio keuangan dalam memprediksi perubahan laba

Abstract: The purpose of this study is to know whether the CR, TAT, DR and ROA affect to profit changes. Sampling technique used in this research is purposive sampling with criteria manufacturing company listed in Indonesia Stock Exchange in 2010 to 2013 was acquired 59 sample companies. The data in the study comes from the secondary data obtained through the documentation technique. Data analysis with multiple regression analysis using SPSS for Windows version 17. Based on the result hypothesis test, then the conclusion that CR and DR has positive and significant effect in profit changes. TAT has no effect on the changes in profit changes. ROA has negative and significant effect in profit changes

Sulfuric acid hydrolysis of various lignocellulosic materials and its mixture in ethanol production

Abstract: Lignocellulosic materials sustainability in ethanol production could be supported by the use of mixed raw materials. Therefore the effect of mixed raw materials to hydrolysis kinetics needs to be studied. For this purpose each raw material was hydrolyzed and the mixed raw materials were also hydrolyzed. As a result, a comparison of the kinetics models of dilute sulfuric acid hydrolysis between various lignocellulosic materials (leaf, twig, corn cob, sawdust) and its mixture was obtained. It was observed that a pseudo-homogeneous model can quantitatively describe individual materials as well as mixed materials with different levels of accuracy. Besides the kinetics model, the influence of various lignocellulosic materials on sugar yield was also investigated. The results showed that the lignin content of the raw material influenced the sugar yield of the hydrolysis. Moreover the mixed lignocellulosic materials did not proportionally provide a yield based on its composition. Some hydrolyzates were fermented...

The effectiveness of the application of scientific literacy-based natural science teaching set toward the students’ learning activities and outcomes on the topic of the interaction of living organism and environment

Abstract: This research was aimed to find out effectiveness of the application of scientific literacy-based natural science teaching set toward the students’ learning activities and outcomes on the topic of The Interaction of Living Organism and Environment. This study is a quasi-experimental study of non-equivalent type (pretest-posttest). The results showed that the teaching set was effective, as proved by the t-test of the learning outcomes of the experimental group (t4,78> t1,66) which was different to the control group (thitung>t1,66), the results of the experiment group n gain average was 0,55 and the control group was 0,39 which was in the average category. The t-test value of the activities in the experimental group (t3,52>t1,66) was different to the control group (thitung>t1,66). Based on the analysis results, it could be concluded that the application of the scientific literacy-based natural science teaching set was effective toward the students’ learning activities and outcomes.

Efektivitas multimedia pembelajaran interaktif berbasis kurikulum 2013

Abstract: Dengan menggunakan model penelitian dan pengembangan (research and development) dan model pengembangan media ADDIE yang memiliki lima tahap pengembangan, yaitu menganalisis kebutuhan, desain, pembuatan, penerapan, dan evaluasi. Analisis data dilakukan dengan deskriptif presentase dan uji satu sampel untuk ketuntasan siswa. Hasil penelitian menunjukkan bahwa media yang dikembangkan telah memenuhi syarat, hal ini dilihat dari hasil validasi aspek media, tampilan program, aspek kualitas, keefektifan produk oleh ahli media sebesar 78,21 % dinyatakan baik. Aspek isi, ketepatan materi oleh ahli materi sebesar 83% dinyatakan baik. Hasil uji efektivitas dengan menggunakan Uji t Satu Sample memperoleh hasil yang baik, oleh karena itu dapat disimpulkan bahwa multimedia pembelajaran ini efektif digunakan dalam pembelajaran.By employing research and development (R & D) model and ADDIE as media development model this reseach have five stages, need analysis, design, developing, implementing, and evaluating. The data werere analyzed using percentage descriptive technics and one sample testing for student outcomes. The result show that the learning media that have been developed by the teacher meet the qualification standard, it can be seen from the validation result by media expert on its product, program appearance, quality, and effectivenes in which show 78,21%. Secondly, vaidation of the content and accuracy aspect by the subject matter expert show good result by 83%. At least the effectiveness testing by using one testing sample technics also have a good result, it can be conclude that learning multimedia is effective for learning process.

Pengembangan science comic berbasis problem based learning sebagai media pembelajaran pada tema bunyi dan pendengaran untuk siswa smp

Abstract: Science comic merupakan media pembelajaran yang efektif untuk menyampaikan IPA secara sederhana dan mudah. Namun, media science comic dalam pembelajaran IPA di SMP masih jarang digunakan. Pengembangan science comic sebagai media pembelajaran dapat membantu siswa dalam memahami materi IPA secara mudah dengan tampilan yang menghibur. Selain itu, penelitian ini mendukung pelaksanaan kurikulum 2013 dengan mengembangkan media science comic berbasis PBL pada tema bunyi dan pendengaran. Tujuan penelitian ini untuk mengetahui bagaimana kelayakan dan keefektifan media science comic berbasis PBL pada tema bunyi dan pendengaran. Jenis penelitian ini merupakan R and D ( Research and Development ) yang diadaptasi dari Sugiyono (2008). Penelitian dilaksanakan pada siswa kelas VIII SMP N 1 Welahan. Kelayakan media science comic diuji melalui penilaian pakar media, materi, dan bahasa. Hasil penilaian pakar terhadap science comic berbasis PBL memperoleh kriteria sangat layak dengan persentase penilaian pakar media sebesar 95,83%, pakar materi sebesar 95,37%, dan pakar bahasa sebesar 99,07%. Keefektifan media science comic berbasis PBL dianalisis dari hasil Pretest dan Posttest dengan menggunakan uji N-gain dan t test. Hasil belajar siswa meningkat dengan kategori sedang dengan nilai N-gain sebesar 0,62. Selain itu, kemampuan berpikir siswa juga mengalami peningkatan yang signifikan berdasarkan perhitungan t test dengan nilai t hitung > t tabel (22,4>1,68). Dengan demikian, media science comic memenuhi kriteria sebagai media pembelajaran yang layak dan media science comic juga efektif meningkatkan hasil belajar serta kemampuan berpikir kritis siswa. Science comic is an effective learning media to communicate science simply and easily. However, Science comic as a learning media is rarely used in science education for Junior high school. Development science comic as learning media can help student to understand science material easily in visual entertaining way. In addition, this research gives countenance to curriculum 2013 with development science comic based PBL on sound and hearing. This research type is R and D (Research and Development) by research design adapted from Sugiyono (2008). This research has been done in Junior High School of Welahan on 8th grade. The feasibility of science comic based PBL evaluated by science medium expert, material expert, and language expert. The validation result shows that science comic has very feasible as a learning media by score percentage from medium expert at 95.83%, material expert at 95.37%, and language expert at 99.07%. Science comic based PBL effectiveness is analyzed from Pretest and posttest score by N-gain and t test analysis. Student’s learning outcome increases in average category which showed from N-gain score at 0.62. In addition, student’s critical thinking skill increases significanly by score of t score > t tabel (22.4>1.68). Thereby, science comic based PBL have not only feasible value as learning media but also effective value in learning process. It increases student’s learning outcomes and student’s critical thinking skill.

Cadmium removal using vegetable oil based emulsion liquid membrane (elm): membrane breakage investigation

Abstract: The aim of this research is to quantify the occurrence of membrane breakage in vegetable oil based Emulsion Liquid Membrane (ELM). Basically, ELM consists of three main phases; internal, external and membrane. In this work, the membrane phase was prepared by dissolving Span 80 as surfactant and Aliquat 336 as carrier in commercial grade corn oil. As a way to promote sustainable development, vegetable oil which is environmentally benign diluent was incorporated in the formulation of ELM. The influence of several important parameters towards membrane breakage were studied. They are carrier and surfactant concentration, W/O volume ratio, emulsification time, internal phase concentration as well as stirring speed. Based on the data obtained, emulsion prepared using 4 wt% Aliquat 336 and 3 wt% Span 80 resulted in the most stable emulsion with only 0.05% membrane breakage. The emulsion was produced using W/O volume ratio of 1/3 and it was homogenized with the assistance of ultrasound for 15 min. Moreover, emulsion produced able to provide a fair balance between emulsion stability and Cd(II) permeability as it able to remove 98.20% Cd(II) ions from the external phase.