294 research outputs found

    Identifikasi Miskonsepsi Dan Penyebabnya Pada Siswa Kelas XI Mia SMA Negeri 1 Sukoharjo Tahun Pelajaran 2015/2016 Pada Materi Pokok Stoikiometri

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    Tujuan penelitian ini adalah untuk mengetahui adanya miskonsepsi siswa, mengetahui tingkat miskonsepsi yang dialami siswa, dan mengetahui penyebab miskonsepsi siswa pada materi pokok stoikiometri. Penelitian ini merupakan penelitian deskriptif. Sampel dalam penelitian ini diambil dengan teknik purposive sampling. Subjek dalam penelitian ini adalah siswa kelas XI MIA 4 dan 5 SMA Negeri 1 Sukoharjo. Teknik pengumpulan data dilakukan dengan tes diagnostik stoikiometri (TDS) yang sudah dikembangkan oleh Suandi Sidauruk, dan dilanjutkan dengan wawancara terhadap siswa yang terdeteksi miskonsepsi. Hasil penelitian menunjukkan bahwa terjadi miskonsepsi pada materi pokok stoikiometri siswa kelas XI MIA SMA Negeri 1 Sukoharjo. Miskonsepsi terjadi pada semua konsep, yaitu konsep persamaan reaksi, Ar/Mr, dan konsep mol. Sebanyak 40,46% siswa mengalami miskonsepsi pada konsep persamaan reaksi, 38,36% siswa miskonsepsi pada konsep Ar/Mr, dan sebanyak 53,77% siswa mengalami miskonsepsi pada konsep mol. Miskonsepsi yang terjadi pada siswa ini disebabkan oleh kondisi siswa dan buku pegangan siswa. Berdasarkan kesimpulan tersebut, maka disarankan kepada siswa untuk meningkatkan pemahaman pada konsep-konsep materi stoikiometri dengan cara belajar, berdiskusi, atau bertanya kepada guru. Guru hendaknya menekankan konsep-konsep penting pada materi yang diberikan dan melakukan bimbingan serta pengkajian terhadap buku yang akan digunakan sehingga dapat meminimalisir miskonsepsi siswa

    Hedges Used In Twilight Novel “ New Moon ” Writen By Stephenie Meyer: A Sociolinguistics Perspective

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    This research aims at describing the types of hedges which are used in Twilight novel “New Moon” written by Stephenie Meyer, and its motives of using hedges. The type of research is descriptive qualitative. The writer focuses on analyzing the types of hedges, that is used in Twilight novel “New Moon” written by Stephenie Meyer. The hedges as the object of the data. The data taken are words, phrases, clauses, and sentences which contain hedges. The source of data are taken from “New Moon” novel written by Stephenie Meyer. The method of collecting data is documentation and the step are reading, watching, signing, and coding the data. The analysis of the motives, the writer uses sociolinguistics analysis especially in hedges theory which is used by Lakoff (1973). The result of the research show that firstly: there are 10 kinds of hedges which are used in women’s speech namely: (1) Lexical hedges or fillers (37,5%), (2) Tag questions (12,5%), (3) Rising intonation (1,78%), (4) Intensifiers (33,9%) (5) Avoidance of strong swear words (7,1%), (6) Emphatic stress (7,1%). The hedges used are fillers ( 37,5%), intensifiers (33,9%), tag questions (12,5%), avoidance of strong swear words (7,1%), emphatic stress (7,1%), and rising intonation (1,7%). The mostly motives which are used by people are makes sentence fuzzier (21,4%), to assure the hearer (14,2%), to ask confirmation (14,2%), to appreciate something (7,1%),to interrupt (5,3%), to make sentence more fun (3,5%), and to fathic communion (1,7%)

    Pengaruh Karakteristik Aspal Modifikasi Getah Pinus Terhadap Peluruhan Campuran Aspal Porus: Effect of pine resin modified asphalt on the draindown of porous asphalt mixture

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    A porous asphalt mixture is a type of pavement that allows water to drain through, thereby reducing the amount of surface runoff and improving road safety. To drain water quickly, porous asphalt is dominated by coarse aggregate so that the voids in the mixture become larger. Draindown, which is the loss of asphalt binder from the mixture, can cause blockages and reduce the ability of the pavement to drain rainwater. The use of modified asphalt is expected to increase the bonding between the asphalt and aggregate to withstand loading but meet draindown requirements. The pine resin used as an asphalt modifier in this study was 2%, 3%, 4%, and 5%, whereas the percentage of gumrosin was 4% by weight of the modified asphalt. Modified asphalt testing includes the penetration, softening point, ductility, and weight loss. The mixing process of the aggregate with modified asphalt was carried out at 160 °C with asphalt contents of 4.5%, 5%, and 5.5% by weight of the asphalt mixture. The results showed that the penetration value, ductility, and weight loss of the modified asphalt increased, while the softening point decreased with the addition of pine resin. In general, the physical properties of the modified asphalt have a significant effect on the draindown value. Referring to the draindown specifications of the porous asphalt mixture (0.3 %), this requirement is fulfilled in all modified asphalt compositions and asphalt contents used in this study

    Dati VIIRS-Nightfire per il monitoraggio del gas flaring in Amazzonia: il caso Yasun\ued

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    L\u2019estrazione di combustibili fossili \ue8 un\u2019attivit\ue0 che ha ormai raggiunto aree remote ad alta diversit\ue0 biologica e culturale, tra le quali desta gran preoccupazione l\u2019espansione della frontiera petrolifera in Amazzonia occidentale, specialmente nella Riserva della Biosfera Yasun\uec (YBR), uno dei luoghi pi\uf9 biodiversi del pianeta e casa ancestrale degli indigeni Waorani. In prossimit\ue0 di questa zona, gli impatti socio-ambientali diretti e indiretti delle varie fasi dell\u2019estrazione petrolifera sono ampiamente documentati. Tra queste attivit\ue0, la distribuzione spaziale e gli impatti ambientali del gas flaring non sono stati ancora investigati a fondo, anche a causa della mancanza di un sistema di monitoraggio e documentazione delle posizioni dei flare e dei volumi di gas bruciato. Negli ultimi anni si sta assistendo per\uf2 a un\u2019inversione di tendenza, grazie allo sviluppo di vari metodi di monitoraggio da remoto, attraverso l\u2019analisi multispettrale da satellite. Lo scopo di questo studio \ue8 mappare l\u2019attivit\ue0 di gas flaring nell\u2019area dello YBR, analizzando diacronicamente e valutando gli impatti potenziali sia sulla biodiversit\ue0 che sulle comunit\ue0 locali. I dati giornalieri prodotti dalla NOAA da gennaio 2017 a marzo 2018, basate sull\u2019elaborazione di immagini dal sensore \u201cVisible Infrared Imaging Radiometric Suite\u201d del satellite Suomi-SNPP per il monitoraggio delle attivit\ue0 di gas flaring, sono stati analizzati e geoprocessati con dati sulle aree protette e comunit\ue0 indigene. Per il corretto posizionamento dei flare, quando possibile, \ue8 stato fatto riferimento ai dataset annuali della NOAA, per i nuovi flare \ue8 stato usato il centroide delle rilevazioni. I risultati preliminari mostrano la presenza di un nuovo sito di flare nel campo petrolifero Tiputini vicino all\u2019 \u201cArea Nucleo\u201d della YBR; tre flare sono stati rilevati nella zona buffer e 19 nella zona di transizione della YBR. spaziale ha inoltre identificato 6 comunit\ue0 indigene in un raggio di 6 Km dai flare. Questo studio rivela l\u2019enorme potenziale degli open data come Nightfire della NOAA per il monitoraggio di aree remote ad elevata importanza per la conservazione della biodiversit\ue0 e dei territori indigeni

    Survei Jentik Nyamuk Aedes Aegypti Di Perumahan Wilayah Kerja Puskesmas Menteng Kota Palangka Raya

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    Severe dengue or Dengue Hemorrhagic Fever (DHF) occurrence in Palangka Raya frequently becomes epidemic. The morbidity rate (incidence rate) of DHF cases in Central Kalimantan in 2016 reached 69.1 per 100,000 population with the mortality rate (fatality rate) of 1.4%. The morbidity rate reached 278.4 per 100,000 population in Palangka Raya, the second place after North Barito regency. Based on the Ministry of Health Republic of Indonesia's Strategic Planning (Renstra), targets for dengue fever in 2016 should be <49 per 100,000 population, Central Kalimantan Province has not achieved the target yet. The Central Kalimantan Provincial Health Office reported the epidemy of DHF in 2017 occurred in the working area of Menteng Community Health Center. The report found a case that all family members of a household suffered from DHF. This community service aimed to educate the community to survey of dengue larvae independently, to develop the community's knowledge and awareness about the importance of support from larvae monitoring speculator Juru Pemantau Jentik (also briefly known as Jumantik) and to increase community participation in DHF prevention movement in Palangka Raya. The method of this community service used site survey, observation, interview, larva examination and reporting of results. The survey activity of larvae showed that Aedes aegypti mosquito larvae were identified in 13.3% of the houses, mostly found in bathtubs, water shelters and water container of water dispensers

    The costs of beekeeping for pollination services in the UK? An explorative study

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    Honey bees are a key managed pollination service resource in crop agriculture, providing flexible, highly generalist and resilient pollination service delivery to a broad range of UK crops. Despite their potential economic impacts, there is little information on the actual costs involved in providing pollination services experienced by UK beekeepers. Utilizing an online survey of UK beekeepers, this study examines the full economic costs of providing pollination services to crops in the UK, as well as examining the differences in costs experienced by different beekeepers. The findings indicate that <10% of respondent beekeepers, mainly professionals, actively provide pollination services to crops, and rarely receive payment for this in field crops. In apple orchards, where beekeepers most often receive payments, the benefits to the orchard are estimated at 86–149 times the payments received by beekeepers. Although exploratory, the findings highlight the need for wider collection of information on beekeeping costs and several key knowledge gaps that could influence future development of the UK bee farming industry
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