18 research outputs found
Adiabatic quantum pumping through surface states in 3D topological insulators
No full textWe investigate adiabatic quantum pumping of ballistic Dirac fermions on the surface of a strong three-dimensional topological insulator. Two different geometries are studied in detail, a normal metal–ferromagnetic–normal metal (NFN) junction and a ferromagnetic–normal metal–ferromagnetic (FNF) junction. Using a scattering matrix approach, we show that each time a new resonant mode appears in the transport window the pumped current exhibits a maximum and provide a detailed analysis of the position of these maxima. We also predict a characteristic difference between the pumped current in NFN- and FNF-junctions: whereas the former vanishes for carriers at normal incidence, the latter is finite due to the different nature of wavefunction interference in the junctions. Finally, we predict an experimentally distinguishable difference between the pumped current and the conductance.Quantum NanoscienceApplied Science
Fumigant and Repellent Effects of Essential Oil Fractions of Mentha piperita against Tribolium castaneum (Coleoptera: Tenebrionidae)
No full textTribolium castaneum<em> is one of the important stored-product pests in tropical countries. Fumigation with phosphine is the most commonly method to control </em>T. castaneum<em>. However, long-term application of phosphine will cause resistance. The aims of this research were to study the effects of fumigant and repellent of peppermint oil </em>Mentha piperita<em> fraction against </em>T. castaneum<em>, and to identify the compounds contained in the active fraction. This research was conducted in Entomology Laboratory Seameo Biotrop and <em>Forensic Laboratory of Indonesian Police Headquarters Jakarta</em>, from January to October 2016. <em>Peppermint oil</em></em> <em>was</em> <em>extracted by</em> <em>distillation from the leaves of M. piperita</em>.<em> Peppermint oil was fractionated by counter-current distribution method using three solvents: n-hexane, ethyl acetate, and methanol. Then, the three fractions were tested as fumigant and repellent against </em>T. castaneum<em>. The active fraction of essential oils were identified by GC-MS. The n-hexane fraction of peppermint (HFP) was the active fraction caused mortality on larvae and adults of </em>T. castaneum<em> at 72 hours after fumigation. The LC<sub>95</sub> values for the adults and larvae was 1.9 % and 9.43 % , respectively. Sublethal concentration of HFP showed inhibitory activity on larvae</em> <em>development. Percentage of pupae transformed from treated larvae was 48.67-74.91 % and percentage of adults emerged was 9.12-16.59 %. The repellent activity of HFP on adults of T. castaneum was 86.7 % at 72 hours after treatment. The dominant compounds of HFP was β-pinene, limonene, isopulegol, menthone, isomenthon, menthol, pulegone, and trans-carane. The HFP or its compounds was potential to be develoved as botanical insecticides.</em></jats:p
TINJAUAN KRITIS TERHADAP KONSEP IDEOLOGIS KEPENGARANGAN INDONESIA : KAJIAN SOSIOLOGIS
Full text linkIndonesian writers continue to race across the ocean of globalization and technology. Those who come from various regions, fused into a large community as citizens of the world literature, sow among a number of mirage and cyberspace. An Indonesia poet or author has diverse languages, in accordance with the ideological background (worldview) authorship respectively. Ideology means a way of thinking or way of life of a person or a group. This paper assesses the ideology of Indonesia authorship in terms of sosilogi. Sociology is the study of society or community. Through this sociological theory discovered the concept of Indonesian author diverse ideologies. Indonesian author is able to create an ideology novelty literary language in conditions of globalization regime. Through literature, the authors of Indonesia express ideas and thoughts for the people of Indonesia
Alternatif Konsep Kelembagaan untuk Penajaman Operasionalisasi dalam Penelitian Sosiologi
Full text linkEnglishThe experts have no the same perception regarding the term of “institution”. This leads to unworkable definitions and concepts. This paper reviews the existing thoughts, especially those related with the term of “organization”, and simplifies them to formulate an easier concept which enables scientists and practitioners to work with. Different meanings exist due to different points of views of the experts, especially in early stage of sociology development. Sine 1950’s, social institution and social organization have been distinguished strictly. The author proposes a solution, i.e., the term of “institution” to mention the social system in which it is classified into two important components, namely “institutional aspect” and “organizational aspect”. Through this differentiation, it is expected that the analysis becomes more detailed, signifies the strong and weak aspects, and enables to choose the strategy of developing it.IndonesianIstilah “kelembagaan” belum memperoleh kesamaan pengertian di kalangan para ahli. Hal ini menyebabkan munculnya beberapa pengertian dan konsep yang menyebabkan tidak dapat dioperasionalkan. Tulisan ini berusaha melakukan tinjauan (review) seluruh pemikiran yang berkembang, terutama kaitannya dengan istilah “organisasi”, untuk kemudian merumuskan satu konsep yang lebih mudah sehingga dapat dipergunakan baik untuk kalangan ilmuwan maupun praktisi. Ketidaksamaan pemaknaan terjadi karena setiap ahli memiliki titik pandang yang berbeda dalam membahasnya, terutama pda masa-masa awal perkembangan sosiologi. Namun, semenjak era 1950-an, sesungguhnya sudah terlihat adanya pembedaan yang tegas antara kelembagaan (social institution) dan organisasi (social organization). Sebagai solusinya, penulis menggunakan istilah “kelembagaan” untuk menyebut suatu sistem sosial dimaksud, yang didalamnya dapat dibagi menjadi dua komponen penting, yaitu “aspek kelembagaan” dan “aspek keorganisasian”. Dengan membedakan seperti ini, maka analisa dapat lebih mendalam, dapat diketahui aspek apa yang kuat dan lemah, serta dapat memilih strategi untuk pengembangannya
TANTANGAN PENGINTEGRASIAN JAMINAN KESEHATAN DAERAH KE DALAM JAMINAN KESEHATAN NASIONAL UNTUK MEWUJUDKAN CAKUPAN PELAYANAN KESEHATAN UNIVERSAL
Full text linkThis study is to review the facts in the health care field, where WHO has agreed to achieve Universal Health Coverage (UHC) in 2014. UHC is a health system that ensures every citizen in the population has fair access to a qualified promotive, preventive, curative, and rehabilitative health care at reasonable costs. Universal coverage contains two core elements namely equitable access to qualified health services for every citizen, and the protection of financial risks when people use health services. Indonesia is currently in transition towards UHC. Law No. 40 Year 2004 about National Social Security System (UU SJSN)' has answered the basic principles of UHC by requiring every citizen to have access to comprehensive health services that are needed through pre-effort system. Then, the author will formulate solutions to these problems which can be seen as a recommendation for the implementation of health care development. Problem solving methods used in formulating solutions to problems are policy analysis using William Dunn and Abidin's theory, and the Fishbone Diagram. Based on the analysis, the author advises the need to arrange a formulation that meets the demands of integration of Jamkesda into JKN. Formulation of policies which have been directed towards the centralization of health financing through JKN program must be balanced by providing a flexible space for local governments to participate in decision making processes dynamically. This formulation is called Centralized Dynamic Integration policy formulation.Â
Peningkatan Hasil Belajar Siswa Kelas VII Smplb Karya Mulia Surabaya Menulis Buku Harian melalui Pemetaan Pikiran dengan Baling-Baling Berwarna
Full text linkWriting a diary with colorful propeller mind mapping method is an innovative method to enhance the 7th grade hearing impaired students' capabilities and skills of writing in Karya Mulia Special Secondary School for Students with Disabilities (SMPLB) Surabaya. This innovative effort was based on the constraints or obstacles to teach hearing impaired students in developing the abilities and skills of writing a diary that were still far below the average of minimum completion criteria (KKM). To find out the extent of this innovative method's implementation's impact, the author wanted to do a class action research (PTK) that includes 3 cycles where two-time meetings were conducted in each cycle. The research was started from the pre action activities continued to a cycle-1, cycle-2, to cycle-3. The result indicates that there has been improvements in 7th grade student's learning outcome in writing a diary through mind mapping mehod using learn to write diary through colorful propeller mapping method AsbtrakMenulis buku harian melalui metode pemetaan pikiran (mind mapping) dengan menggunakan Baling-Baling berwarna merupakan metode inovatif untuk meningkatkan kemampuan dan keterampilan menulis buku harian siswa tuna rungu kelas VII SMPLB Karya Mulia Surabaya. Upaya inovatif ini beranjak dari kendala/hambatan sebelumnya dalam membelajarkan siswa tuna rungu mengembangkan kemampuan dan keterampilan menulis Buku Harian yang hasilnya berada jauh di bawah rata-rata Kriteria Ketuntasan Minimum (KKM). Untuk mengetahui sejauh mana dampak dari penerapan metode inovatif ini, penulis melakukan penelitian tindakan kelas (PTK) yang mencakup 3 siklus dan setiap siklus terdiri dari dua kali pertemuan. Penelitian dimulai dari kegiatan pra tindakan, dilanjutkan dengan siklus-1, siklus-2, sampai dengan siklus-3. Hasil penelitian tindakan kelas menunjukkan adanya peningkatan hasil belajar siswa kelas VII SMPLB Karya Mulia Surabaya dalam menulis buku harian melalui metode pemetaan pikiran dengan Baling-Baling berwarn
Ekspresi Verbal-Gramatikal Penyandang Afasia Broca Berbahasa Indonesia: Suatu Kajian Neurolinguistik
Full text linkThis study aims to explain the patterns of construction of verbal expressions in the grammatical aspects of Indonesian Broca’s aphasia persons. People with Broca's aphasia have different verbal-grammatical expressions from normal speakers, so it is necessary to do research to create a pattern of the verbal expression. This pattern can help and facilitate the process of restoring language competence in Indonesian Broca’s aphasia persons, so the speech therapy process can be grounded in that pattern. This study was conducted using qualitative-descriptive methods with a case study approach. The research data were in the forms of verbal expressions. This study was conducted at the National Brain Center Hospital. Three (3) respondents were involved as the research subjects that met the inclusion criteria. The results showed that the overall types of verbal expressions in the grammatical aspect of people with Broca’s aphasia are (a) irregular repetition and elimination of affixation; (b) word categorization; (c) phrases with lect deficits and phrases with imperfect shapes; (d) removal and exchange of syntactic functions, removal of conjunctions. AbstrakPenelitian ini bertujuan untuk menjelaskan pola-pola konstruksi ekspresi verbal aspek gramatikal dari penyandang afasia Broca berbahasa Indonesia. Para penyandang afasia broca memiliki ekspresi verbal-gramatikal yang berbeda dengan penutur normal, sehingga perlu untuk dilakukan penelitian untuk membuat pola atas ekspresi verbal tersebut. Pola tersebut pada masa nanti dapat membantu dan memudahkan proses pemulihan kompetensi berbahasa pada penyandang afasia broca berbahasa Indonesia, sehingga proses terapi wicara dapat berpijak pada pola tersebut. Penelitian ini dilakukan dengan menggunakan jenis kualitatif-deskriptif dengan pendekatan studi kasus. Data penelitian ini berupa ekspresi verbal para penyandang afasia Broca berbahasa Indonesia. Secara keseluruhan penelitian ini mengambil lokasi di Rumah Sakit Pusat Otak Nasional. Sebanyak 3 (tiga) orang informan dijadikan sampel penelitian yang memenuhi kriteria inklusi. Hasil penelitian menunjukkan bahwa tipe realisasi gramatikal pada luaran wicara pengandang afasia broca adalah (a) penghilangan dan pengulangan afiksasi secara tidak teratur, (b) kategorisasi kata, (c) frasa dengan defisit leksikal dan frasa dengan bentuk yang tidak sempurna, dan (d) penghilangan dan pertukaran fungsi sintaksis, penghilangan konjungsi
Morita Isomorphism for Cuntz Algebras
No full textLet Rep On denote the category of all nondegenerate ∗ representations of the Cuntz algebra On. For any 2 ≤ n, m< ∞, we construct an isomorphism functor Fn, m from Rep Om to Rep On such that (i) Fn, m commutes with infinite direct sum, (ii) Fn, m ∘ Fm, l = Fn, l and Fm,n=Fn,m−1 for any 2 ≤ n, m, < ∞, (iii) for the von Neumann algebra Nπ generated by the image of a representation π, HCode NFn,m(π) and Nπ are isomorphic for any π in Rep On, and (iv) there exists a functor F∞,n from Rep On to Rep O∞ with a right inverse such that F∞,n∘ Fn,m= F∞,m for any 2 ≤ n, m< ∞. © 2022, The Author(s), under exclusive licence to Springer Nature B.V.journal articl
THE EFFECTIVENESS OF ICT UTILIZATION ON COGNITIVE ACHIEVEMENT IN THE VOCATIONAL EDUCATION DURING THE COVID-19 OUTBREAK IN INDONESIA
Full text linkIn the current Covid-19 transition period, it is very necessary to use innovative vocational learning models in digital models. The number of vocational learning models using ICT as the main tool during the pandemic needs to be studied further on how the model is implemented and its effectiveness. The problem that arises is that we do not know whether the use of ICT tools in vocational learning is effectively used. This study aims to empirically verify the effectiveness of ICT in vocational education learning during the Covid-19 transition period. Meta-Analysis is used as a method to conduct this research. There are 30 latest articles reviewed during the year of 2020 to 2021. All articles are classified based on the author, year of publication, the ICT device or application used, and the results of the post-test experimental and control classes. The results are obtained after the calculation using the effect size (ES) formula. The calculation results show that the learning using ICT as a tool during the Covid-19 pandemic has a high effect (1.28) on cognitive achievement in vocational education. The conclusion of this study is that ICT-assisted learning has a high level of effectiveness and is suitable for learning in the vocational field. Then, the dominant multimedia device or application used in the vocational learning in Indonesia is the computer technology network and it is the most widely used for the application of ICT in learning
KOMPATIBILITAS EKSTRAK Piper retrofractrum Vahl. DAN Curcuma xanthorrhiza Roxb. UNTUK PENGENDALIAN Helopeltis antonii Sign.
Full text linkPlant extracts as a botanical insecticide can be used in either single or mixture forms. Mixed extracts have advantages: reducing dependence on one plant species, being the synergistic effect which can increase the effectiveness of formulas, and reducing the possibility of resistance emergence. This study aimed to obtain compatible and synergistic comparisons of P. retrofractum with C. xanthorrhiza extracts that effectively control the third instar nymph of Helopeltis antonii. The comparison of P. retrofractum and C. xanthorrhiza extracts were 4:1, 2:1, 1:1, 1:2, and 1:4 (w/w). The experiment was performed in a completely randomized design using the contact method. The LC50, LC90, and LC95 values were calculated using the PoloPlus Ver 1.0 Program. The mixture interaction was determined from the Combination Index value. The results showed that P. retrofractum extract was compatible and synergistic with C. xanthorrhiza extract at a ratio of 2:1 (w/w). These were the best combination shown by the lowest LC50, LC90, and LC95 values and showed consistently strong synergistic properties compared to other concentrations. The components of P. retrofractum may be responsible for the insecticidal properties are piperine; piperanine; piperidine; 3,4-Pyridinedimethanol,6-methyl; Piperidine,1-[5-(1,3-benzodioxol-5-yl)-1-oxo-2,4-pentadienyl]-,(Z,Z)-; and (2E,4E,12E)-1-(Piperidine-1-yl)octadeca-2,4,12—trien-1-one. The insecticidal activity of C. xanthorrhiza may associated with its content of xanthorrhizol, Ar-curcumene, β-curcumene, curzerene, germacrone, 7-zingiberene, caryophyllene, and β-bisabolol. A combination of these two plant extracts has the potential to be further developed as a botanical insecticide to control H. antonii.Ekstrak tanaman sebagai bahan insektisida nabati dapat digunakan secara tunggal maupun campuran. Penggunaan campuran ekstrak memiliki kelebihan, antara lain dapat mengurangi ketergantungan pada satu jenis/spesies tumbuhan, efek sinergisme yang ditunjukkan dapat meningkatkan efektivitas formula dan memperlambat kemungkinan terjadinya resistensi serangga. Penelitian ini bertujuan untuk mendapatkan perbandingan ekstrak P. retrofractum yang kompatibel dan sinergis dengan ekstrak C. xanthorrhiza yang efektif untuk mengendalikan nimfa instar ketiga Helopeltis antonii. Perbandingan ekstrak P. retrofractum dan C. xanthorrhiza pada uji kompatibilitas, yaitu 4:1, 2:1, 1:1, 1:2 dan 1:4 (w/w). Pengujian dirancang secara acak lengkap menggunakan metode kontak serangga. Nilai LC50, LC90 dan LC95 dihitung dengan menggunakan Program PoloPlus Ver 1.0. Sifat interaksi campuran ditentukan dari nilai Indeks Kombinasi (IK). Hasil penelitian menunjukkan ekstrak P. retrofractum kompatibel dan bersifat sinergis secara konsisten dengan ekstrak C. xanthorrhiza pada perbandingan 2:1 (w/w). Perbandingan tersebut merupakan kombinasi terbaik yang ditunjukkan oleh nilai LC50, LC90 dan LC95 yangpaling rendah dan menunjukkan sifat sinergis kuat secara konsisten dibandingkan dengan perbandingan lain yang diuji. Komponen ekstrak etil asetat P. retrofractum yang diduga bersifat insektisida, di antaranya piperin, piperanin, piperidin, 3,4-Pyridinedimethanol, 6-methyl-; Piperidine,1-[5-(1,3-benzodioxol-5-yl)-1-oxo-2,4-pentadienyl]-,(Z,Z)-; dan (2E,4E,12E)-1-(Piperidin-1-yl)octadeca-2,4,12—trien-1-one. Senyawa metabolit sekunder pada ekstrak etanol C. xanthorrhiza yang diduga memiliki aktivitas insektisida, antara lain xanthorrhizol, Ar-curcumene, β-curcumene, curzerene, germacrone, 7-zingiberene, caryophyllene, dan β-bisabolol. Kombinasi kedua ekstrak tanaman ini berpotensi untuk dikembangkan lebih lanjut sebagai insektisida nabati untuk mengendalikan H. antonii
