bluuebunny/crossref_metadata_2025 huggingface dataset:
Insights into Charge Transfer at the Cluster/semiconductor Interface for In-Depth Understanding the Role of Atomically Precise Silver Cluster
Authors: Wang Yu , Liu Xiao-He , Wang Qiankun , Quick Martin , Kovalenko Sergey , Chen Qing-Yun , Koch Norbert , Pinna Nicola
Published: November 2019

A cluster/semiconductor model is built for exploring the role of noble metal clusters in a photocatalytic system. The incorporation of an atomically precise nanocluster, e.g. Ag44(SR)30, onto a large band gap semiconductor such as TiO2 allows to obtain a clear interface and thus simplify the system. The composite is employed for photocatalytic H2 generation. It’s found that changing the light source from visible light to simulated sunlight leads to an enhancement by three orders of magnitude. The H2 production rate reaches 7.4 mmol/h/gcatalyst which is five times higher than that of Ag nanoparticles modified TiO2 and even comparable to that of the similar conditioned Pt nanoparticle modified TiO2. Energy band alignment and transient absorption spectroscopy, together with other studies, reveal that the role of the metal clusters is different from both organometallic complexes and plasmonic-nanoparticles. A type-II heterojunction charge transfer route is achieved under UV-vis irradiation, in which the cluster serves as small band gap semiconductor. The type-II photosystem has a more efficient charge separation ability, which contributes significantly to the enhanced catalytic performance. This finding endows the clusters a broad platform as cocatalysts rather than merely photosensitizers in the applications of light energy conversion.
On the Bonding Situation in Stannocene and Plumbocene N-Heterocyclic Carbene Complexes
Authors: Andrada Diego , Danés Sergi , Wirtz Lisa , Mueller Carsten , Huch Volker , Block Theresa , Pöttgen Rainer , Schäfer André
Published: November 2019

A detailed experimental and computational study of a series of stannocene and plumbocene N-heterocyclic carbene complexes is presented. This unique class of group 14 Lewis acid base adducts was obtained from reactions of the corresponding metallocenes and N-heterocyclic carbenes (NHC), and were structurally characterized by single crystal X-ray diffraction. The obtained structures show a perpendicular pose of the NHC with respect to the metallocene, hence precluding the maximal interaction between the moieties. The nature of the Sn-CNHC and Pb-CNHC bonds have been investigated by applying Energy Decomposition Analysis (EDA-NOCV). For the sake of comparison, known stannocene and plumbocene Lewis base complexes have been included in the series. The attractive chemical bonding interactions are around 50% electrostatic, 30% covalent and 20% dispersion. Indeed, dispersion interactions play a determining role the bigger the substituents become. The covalent interactions derive from the donation of the carbene ligand into the empty p orbital of the metallocene.
Aggregation of Lipid A Variants: a Hybrid Particle-Field Model
Authors: De Nicola Antonio , Soares Thereza A. , Bore Sigbjørn Løland , Sevink G. J. Agur , Cascella Michele , Milano Giuseppe
Published: November 2019

Lipid A is one of three components of bacterial lipopolysaccharides (constituting the outer membrane of Gram-negative bacteria) and is recognized to have an important biological role in inflammatory response of the immune system. Its biological activity is modulated by the number of acyl-chains and from the electrostatic interactions with the different counter-ions. In this paper we report a coarse-grained model of poly-acyl Lipid A based on the hybrid particle field molecular dynamics approach (hPF-MD). In particular, we investigate the stability of Lipid A bilayer with two different acyl-chains, hexa- and tetra-. We find a good agreement of the particle distribution along the cross-section of bilayer by comparing the density profiles calculated from hPF-MD simulations with respect to reference all-atom. Moreover, we validate the model simulating the self-assembly of lamellar phase from an initial random distribution of Lipid A/N2+molecules in water. Finally, we test the stability of a vesicle composed of hexa-acylated Lipid A in water. The proposed model is able to maintain stable bilayer aggregates and spherical vesicle, and to correctly reproduce the phase behavior of Lipid A/Ca2+/Water mixture.
Capturing the Flexibility of a Protein-Ligand Complex with Enhanced Sampling Techniques: Binding Free Energies from Umbrella Sampling, REST2, and Bias Exchange
Authors: Wingbermühle Sebastian , Schäfer Lars V.
Published: November 2019

The performance of the three popular enhanced sampling techniques Umbrella Sampling (US), Replica Exchange with Solute Tempering 2 (REST2), and Bias Exchange (BE) is tested on Major Histocompatibility Complex I (MHC I) binding an antigenic peptide. The configurational flexibility of peptide-MHC I complexes (pMHC I) is key to their immunological function and must therefore be captured thoroughly by the sampling techniques used to yield accurate thermodynamics of pMHC I. Here, we calculate the Potential of Mean Force (PMF) for the dissociation of the peptide N-terminus from the MHC I binding groove. We carefully analyze the statistical error of the resulting PMF and the sampling of the orthogonal degrees of freedom to assess how well the three sampling techniques used can handle large-scale configurational flexibility.
Identifying and Tracking Defects in Dynamic Supramolecular Polymers
Authors: Gasparotto Piero , Bochicchio Davide , Ceriotti Michele , Pavan Giovanni M.
Published: November 2019

A central paradigm of self-assembly is to create ordered structures starting from molecular

monomers that spontaneously recognize and interact with each other via noncovalent interactions.

In the recent years, great efforts have been directed toward reaching the perfection in the

design of a variety of supramolecular polymers and materials with different architectures. The

resulting structures are often thought of as ideally perfect, defect-free supramolecular fibers,

micelles, vesicles, etc., having an intrinsic dynamic character, which are typically studied at the

level of statistical ensembles to assess their average properties. However, molecular simulations

recently demonstrated that local defects that may be present or may form in these assemblies, and which are poorly captured by conventional approaches, are key to controlling their dynamic

behavior and properties. The study of these defects poses considerable challenges, as the

flexible/dynamic nature of these soft systems makes it difficult to identify what effectively constitutes

a defect, and to characterize its stability and evolution. Here, we demonstrate the power

of unsupervised machine learning techniques to systematically identify and compare defects in

supramolecular polymer variants in different conditions, using as a benchmark 5°A-resolution

coarse-grained molecular simulations of a family of supramolecular polymers. We shot that this

approach allows a complete data-driven characterization of the internal structure and dynamics

of these complex assemblies and of the dynamic pathways for defects formation and resorption.

This provides a useful, generally applicable approach to unambiguously identify defects in

these dynamic self-assembled materials and to classify them based on their structure, stability

and dynamics.
EKSTRAKSI INULIN DARI UMBI GEMBILI (Discorea esculenta L) DENGAN PELARUT ETANOL
Authors: Masrikhiyah Rifatul
Published: November 2019

AbstrakGembili merupakan salah satu umbi dari kelompok Dioscoreacea. Umbi gembili memiliki kadar inulin yang cukup tinggi sebesar  14,77% yang bermanfaat bagi kesehatan tubuh. Inulin merupakan serat pangan larut (soluble dietary fiber) yang bermanfaat bagi pencernaan dan kesehatan tubuh. Penelitian ini bertujuan menganalisis pengaruh pelarut air dan etanol dengan volume yang berbeda terhadap kadar air dan rendemen inulin umbi gembili. Penelitian ini merupakan penelitian eksperimental dengan rancangan acak lengkap (RAL) yang terdiri dari 4 perlakuan dengan 3 ulangan. Variabel yang diukur dalam penelitian ini yaitu kadar air dan rendemen inulin umbi gembili. Data variabel yang diperoleh dianalisis menggunakan analisis ragam (Uji F) pada taraf keyakinan 95%. Apabila menunjukkan pengaruh nyata makan dilakukan uji lanjut duncan (DMRT) dengan tingkat keyakinan 95% untuk mengetahui ada tidaknya perbedaan pengaruh yang signifikan antar taraf perlakuan. Hasil analisis sidik ragam (DMRT) menunjukkan bahwa terdapat pengaruh pelarut air dan etanol dengan volume yang berbeda terhadap rendemen inulin umbi gembili (P<0,005).  AbstractGembili is one of the bulbs of the Dioscoreacea group. Gembili tubers have a high enough level of inulin of 14.77% which is beneficial for health. Inulin is a soluble dietary fiber that is beneficial for digestion and health. This study aims to analyze the effect of water and ethanol solvents with different volumes on water content and yield of gembili tuber inulin. This research is an experimental research with a completely randomized design (CRD) consisting of 4 treatments with 3 replications. The variables measured in this study were water content and yield of gembili tuber inulin. Variable data obtained were analyzed using analysis of variance (F test) at a 95% confidence level. If it shows the real effect of eating, a duncan further test (DMRT) with a 95% confidence level is needed to determine whether there is a significant difference in effect between the treatment levels. Results of analysis of variance (DMRT) showed that there was an influence of water and ethanol solvents with different volumes on the yield of gembili tubilli (P <0.005).
KADAR ANTOSIANIN, TOTAL FENOL DAN SIFAT SENSORIS TEPUNG TAPE BERAS HITAM BERDASARKAN VARIASI METODE PENGOLAHAN DAN KONSENTRASI RAGI
Authors: Dewi Marini Firia , Nurhidajah Nurhidajah , Aminah Siti
Published: November 2019

Black rice tapai flour is a product that can familiarizing black rice to general public. The purpose of this research was to determine the best formula of black rice tapai flour based on anthosianin content, total phenol and characteristic sensory analization results. The research design used was a Completely Randomized Design (RAL) factorial with two factors, the processing method and yeast concentration. Each factor consists of three levels. Processing methods are steamed, team and boiling black rice using rice cooker and the concentration of yeast is 1%, 2% and 3% so that nine treatment combinations are repeated three times. The results showed that the black rice tapai flour with tim processing method + 2% yeast concentration is the best formula for tapai flour. Proximate value of black rice tapai flour with tim processing method + 2% yeast concentration is 11.3% water content, 7.74% protein, 4.63% fat, 19.21% fiber, 2.51% ash content and carbohydrate 54.61%.
PENGGUNAAN PLAT TEMBAGA BERCOATING NIKEL SEBAGAI FILTER GAS BUANG KENDARAAN
Authors: Ikhwan Sunan Bukhori
Published: November 2019

Seiring dengan perkembangan teknologi transportasi maka kami melakukan pengujian untuk membantu mengatasi masalah terhadap pencemaran udara dengan pendekatan dan pemanfaatan teknologi rekayasa. Teknologi rekayasa yang digunakan untuk mengurangi pencemaran udara akibat emisi gas buang kendaraan dengan cara pemasangan catalytic converter pada saluran gas buang. Dalam hal ini penelitian menggunakan bahan katalis tembaga (Cu) dan tembaga lapis nikel (Cu*Ni) dengan variasi putaran mesin. Penelitian menggunakan bahan katalis tembaga mampu menurunkan emisi gas buang karbonmonoksida (CO) dan hidrokarbon (HC). Penelitian ini juga meneliti karakteristik material tembaga sebelum pemakaian dan setelah pemakaian yang digunakan untuk mereduksi emisi gas buang, tujuan uji karakteristik material tembaga yang dilakukan dengan menggunakan SEM dan EDX agar dapat mengetahui perubahan unsur material sebelum pemakaian dan sesudah pemakaian.
GREY FORECASTING MODEL IMPLEMENTATION FOR FORECAST OF CAPTURED FISHERIES PRODUCTION
Authors: Shodiq Muhammad
Published: November 2019

The increasing need for fish causes problems related to production in the fisheries sector. In fisheries production all information related to (fishing ground) is well known, but on the other hand it is not easy to predict the amount of production due to unclear information. This is also related to the number of ships that make trips, the length (time) of the trip, the type of fishing gear, weather conditions, the quality of human resources, natural environmental factors, and others. The purpose of this study is to apply Grey forecasting model or GM (1,1) to predict fisheries production. Grey forecasting models are used to build forecast models with limited amounts of data with short-term forecasts that will produce accurate forecasts. This study employs the data of captured fish from 2010 to 2018 to analyze calculations using the GM model (1,1). The results showed that the Grey forecasting model or GM (1.1) produced accurate forecasts with an ARPE error value of 9.60% or the accuracy of the forecast model reached 90.39%.
PERFIL CLÍNICO E EPIDEMIOLÓGICO DOS PACIENTES PORTADORES DE DOENÇA DE CROHN ATENDIDOS NO AMBULATÓRIO DO HOSPITAL ESTADUAL DR. DÓRIO SILVA
Authors: Sequim Vitor , Pagano Suellen Leal , Santos Veronica de Souza , Dalcomune Dyanne Moyses , Colombo Marilia Majeski
Published: November 2019

A doença de Crohn (DC) é uma doença inflamatória intestinal, de caráter crônico, recidivante, transmural, capaz de afetar qualquer área do trato digestivo, desde a boca até o ânus com acometimento mai
Sustentabilidade Urbana e Cidades Educadoras
Authors: Alfonsetti Raquel Steluti , Silva Juliana Damas de Carvalho e
Published: November 2019

A ONU tem defendido a sustentabilidade e incluído as cidades como uma das possibilidades educadoras, desde 1970. Estas imbricadas preocupações surgiram com o relatório Brundtland, em 1987, e, se insti
Method for control the mechanical parameters of overhead power lines based on improved inclinometry
Authors: Goryachev M. P. , Sadykov M. F. , Yaroslavskiy D. A.
Published: November 2019

Structural elements of overhead power transmission lines are experiencing both horizontal and vertical loads. Wires and cables are elements of the overhead power line, on which changes in mechanical loads are observed to a greater degree. This occurs due to the change in the tension force of the wire/cable depending on the temperature and the formation of icy-rime deposits on it, as well as fluctuations in wind gusts. The article describes the most common systems and methods for determining the mechanical loads on an overhead power transmission line. A method is proposed for calculating the mechanical loads on an overhead transmission line based on mathematical models of a flexible wire, rope and a model for determining ice deposits on wires, taking into account the rotation of the wire/cable around its axis. A comparison of the improved inclinometry method with the method developed earlier for the case of formation of ice deposits on the S-50 cable has been carried out. A comparison was made on the error in determining the tension of the S-50 ground-wire protection cable using the method developed to control the mechanical parameters of overhead power lines, which takes into account the wire/cable rotation around its axis and the method for determining icy-rime deposits developed earlier. The developed method allows determining the elongation of the wire/cable in the span with one anchor support, as well as the strength of its tension with greater accuracy. However, additional clarification is required due to the influence of the wind, the formation of icy-rime deposits of various shapes, as well as the structural limitations of the wire/cable rotation when attaching it to the support.
Closed cycle of air-steam mixture the drying section of paper machine
Authors: Kazakov V. G. , Gromova E. N.
Published: November 2019

The energy efficiency of the drying section of paper machine is determined by the technology of heat flows arrangements in it. Paper drying is the most energy-consuming stage of paper production. The thermal mode of the drying section is provided by the steam condensate system which is a part of it. Analysis of exergy increments shows that almost all elements of the drying thermal process are characterized by low exergy efficiency. The main ways for increasing the degree of thermodynamic perfection of the processes occurring in the drying section of the paper machine are identified based on the exergy analysis. It is assumed that the deep internal heat recovery of the steam-air mixture for heating the source air will increase the exergy efficiency of the heat recovery plant and reduce heat removal to the environment. The effectiveness of development and implementation of a closed cycle use of steam-air mixture in the drying section was examined. Building a closed cycle provides that the air mainly has a process duty, that is, it is a transport agent for the transfer of moisture and heat along a closed circuit. The calculations show that the exergy efficiency of the processes in the recovery unit of the drying section of the paper machine of the existing production is 28.6% against 66.29% for the proposed method.
KOMPENSASI, JENJANG KARIR, DAN TURNOVER INTENTION KARYAWAN DI RUMAH SAKIT UMUM QUEEN LATIFA
Authors: Iswandi Emanuel Hardiyanto
Published: November 2019

Metode penelitian menggunakan metode survei dengan metodologi deskriptif kuantitatif. Responden dalam penelitian ini adalah 39 karyawan Rumah Sakit Queen Latifa. Hasil yang ditunjukkan dalam penelitian ini adalah bahwa (1) kompensasi di RSU Queen Latifa berada dalam kategori baik, (2) jalur karier di RSU Queen Latifa dalam kategori baik, (3) Intensi turnover di RSU Queen Latifa General Hospital dalam kategori baik
Komunitas Makrozoobentos di Aek Hisa, Aek Doras, dan Aek Sigeon Kecamatan Lintong Ni Huta Tapanuli Utara
Authors: Fefiani Yusri
Published: November 2019

Penelitian Tentang Komunitas Makrozzobentos pada Aek Hisa, Aek Doras, dan Aek Sigeon di Kecamatan Lintong Ni Huta Tapanuli Utara telah dilakukan dari bulan Oktober sampai dengan November 1994. Makrozoobentos yang didapatkan pada Aek Hisa terdiri dari 701 individu dari 18 Fmili dari 8 Ordo. Pada Aek Doras ditemukan 652 individu dari 15 famili dari 5 Ordo dan pada Aek Sigeon ditemukan 736 individu dari 24 Famili dari 11 ordo, Kepadatan dan Kepadatan Relatif hewan bentos yang tertinggi dari ketiga strata itu adalah Diptera kemudian diikutiTrichoptera. Komposisi Genus Makrozoobentos Aek Hisa dengan Aek Doras, Aek Hisa dengan Aek Sigeon tidak berbeda nyata, tetapi antara Aek Doras dengan Aek Sigeon berbeda nyata pada P = 0,01. Indeks diversitas makrozoobentos pada ketiga strata tidak berbeda nyata
Suatu Tinjauan Tentang Peranan Kepala Sekolah Dalam Meningkatkan Disiplin Kerja Guru
Authors: Matondang Asnawati
Published: November 2019

Artikel ini bertujuan untuk menarik beberapa kesimpulan yaitu : (1) Kepala sekolah selaku pemimpin di lembaga sekolah mempunyai tanggung jawab untuk membina dan mengarahkan guru-guru, (2) Tanggung jawab kepala sekolah pada hakekatnya mencakup dua hal yakni : tanggung jawab selama hidup didunia dan tanggung jawab diakherat kelak, (3) Bahwa kepala sekolah khususnya sebagai pemimpin mempunyai pengaruh yang sangat besar untuk menegakkan atau meningkatkan disiplin terhadap bawahanya, (4) Kepala sekolah berusaha untuk meningkatkan kedisiplinan kepada bawahan, kepada guru-guru yang bertugas disekolahnya, dan (5) Adanya usaha yang dilakukan oleh Kepala Sekolah untuk meningkatkan kedisiplinan bertugas disekolahnya. Dalam suatu organisasi sangat dibutuhkan bawahan yang memiliki disiplin tinggi. Untuk membentuk dan membina disiplin tersebut, ada beberapa faktor yang harus diperhatikan dan merupakan hal yang sangat penting yaitu : (1) motivasi, (2) Pendidikan dan Latihan, (3) Kesejahteraan. Beberapa tipe kepemimpinan yang teridentifikasi antara lain : (1) Tipe Maternalistis, (2) Tipe Paternalistis, (3) Tipe Militaristis, (4) Tipe Otokratis, (5) Tipe Liasser Faire (Biarkan Saja), (6) Tipe populastis, (7) Tipe Administrasi, (8) Tipe Demokratis. Dan Fungsi-fungsi kepemimpinan antara lain adalah : (a) Memandu atau memberikan panduan kepada organisasi, (b) Menuntun, (c) Membimbing, (d) Memotivasi bawahan atau organisasi (e) mengemukakan organsasi (f) Menjalin jaringan-jaringan komunikasi (g) Memimpin pengikut pada sarana yang ingin dicapai sesuai dengan ketentuan waktu dan perencanaan, (h) Pengawasan yang efisien.
Perbedaan Hasil Belajar Siswa Menggunakan Model Numbered Head Together Dengan Snowball Throwing Materi Sistem Indera Kelas XI SMA Prayatna Medan Tahun Pembelajaran 2016/2017
Authors: Fefiani Yusri Fefiani , Surbakti Hermalisa Surbakti
Published: November 2019

Penelitian ini dilakukan untuk mengetahui perbedaan hasil belajar siswa yang diajar dengan menggunakan model pembelajaran Numbered Head Together dengan siswa yang diajar menggunakan model pembelajaran Snowball Throwing pada materi Sistem Indra di kelas XI SMA Prayatna Medan Tahun Pembelajaran 2016/2017. Penelitian ini merupakan penelitian eksperimen dan data diperoleh dari dua kelas yang dipilih secara purposive sampling. Waktu penelitian ini dilaksanakan pada bulan Mei s/d Juni. Populasi dalam penelitian ini adalah seluruh siswa kelas XI.Sampel penelitian ini sebanyak 2 kelas yaitu kelas eksperimen I yang diajarkan dengan menggunakan model Numbered Head Together dan kelas eksperimen II yang diajarkan dengan menggunakan model Snowball Throwing. Sebagai alat pengumpul data hasil belajar digunakan tes objektif yang berjumlah 30 soal yang telah teruji validitas, reabilitas, tingkat kesukaran, dan daya beda soalnya. Hasil pengolahan data diperoleh rata-rata post-test kelas eksperimen I (Numbered Head Together) adalah 71,4 dan rata-rata pos-test kelas eksperimen II (Snowball Throwing) adalah 69,4. Semua data pos-test diperoleh data bedistribusi normal. Data tersebut kemudian diuji homogenitas sehingga diketahui kedua kelas homogen. Setelah diberi post-test nilai rata-rata hasi belajar pada kelas eksperimen I adalah sebesar 71,4 dan pada eksperimen II diperoleh rata-rata hasil belajar sebesar 69,4. Dari data tersebut setelah dianalisis, maka diperoleh peningkatan hasil belajar siswa kelas eksperimen I adalah sebesar 54,2% dan peningkatan hasil belajar siswa kelas eksperimen II adalah sebesar 45,7%. Sehingga dapat diketahui bahwa terdapat perbedaan peningkatan hasil belajar biologi siswa yang diajar dengan menggunakan model pembelajaran Numbered Head Together dan model pembelajaran Snowball Throwing
Efektivitas Bio Herbisida Pulp Kakao (Theobroma cacao L) Dengan Beberapa Tingkat Kematangan Fermentasi Terhadap Pengendalian Gulma di Perkebunan Kelapa Sawit (Elaeis guineensis Jacq)
Authors: Juanda Aulia Aulia , Manurung Saroha Saroha , Ginting Yasser Subroto
Published: November 2019

Bioherbisida dari pulp kakao merupakan salah satu produk sampingan dari kakao, yang masih belum dimanfaatkan secara optimal. Berdasarkan hasil tes awal, fermentasi cair pulp kakao berpotensi untuk digunakan sebagai bio-herbisida. Penelitian ini bertujuan untuk mengetahui pengaruh pengaruh lama fermentasi bioherbisida pulp kakao untuk mengendalikan gulma. Penelitian ini dilakukan di area perkebunan kelapa sawit kampus Lembaga Pendidikan Perkebunan (LPP) Medan. Penelitian dilakukan pada bulan Mei dan Juli 2016. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) non faktorial, terdiri dari 4 perlakuan dan diulang 3 kali. Parameter pengujian disusun pada daftar varians dan menguji Least Significant Difference (LSD) pada level 5% dan 1%. Hasil penelitian menunjukkan bahwa bioherbisida pulp kakao mengandung asam asetat yang dapat meracuni gulma. Persentase keracunan gulma tertinggi dalam 3 Hari Setelah Aplikasi (HSA) tingkat persentase toksisitas 26,00% MI, MII 30,00%, dan sebesar 31,00% MIII. Ini menunjukkan bahwa lama fermentasi mempengaruhi jumlah kandungan asam cuka untuk setiap perawatan. Toksisitas yang disebabkan oleh bioherbisida pulp kakao adalah herbisida kontak seperti yang terlihat dari permukaan daun yang layu tampak seperti terbakar, bagian yang terkena dampak fermentasi air limbah pulp kakao
Penerapan Model Problem Based Learning Bantuan Media Video Terhadap Hasil Belajar Biologi Materi Sistem Ekskresi Kelas XI SMA Pencawan School Medan
Authors: Sari Winda , Manurung Nurhasnah
Published: November 2019

Penelitian ini bertujuan untuk mengetahui adakah pengaruh Penerapan model Peroblem BasedLearning Dengan Bantuan Media Video Terhadap Hasil Belajar Siswa Pada Materi Ekskresi DISMA Pencawan School. Penelitian ini dilaksanakan pada bulan April-Juli 2017. Penelitian inimenggunakan Metode eksperimen semu (Quasi experimen) dengan populasi penelitian adalahseluruh siswa di kelas XI SMA Pencawan School Medan Tahun Pembelajaran 2016/2017 yangberjumlah 61 siswa yang kemudian dijadikan sempel sebanyak 33 siswa dari kelas XI IPA 1dengan cara pengambilan sampel secara acak (Random Sampling). Data yang dianalisis dalampenelitian ini adalah berupa test tertulis yaitu pre test dan post test pada materi ekskresi. Nilairata-rata pre test sebelum model pembelajaran Peroblem Based Learning bantuan media videoadalah 42,95 dan standar deviasi 8,21 maka seluruh siswa dinyatakan tidak tuntas (100%). Danrata-rata post test yang diperoleh setelah model yang diterapkan adalah 68,04 dan standar deviasiadalah 11,45. Berdasarkan nilai KKM 75 maka sebanyak 7 siswa (21%) yang tuntas dan 26 siswa(79%) belum tuntas. Berdasarkan uji hipotesis diperoleh thitung = 13,90 sedangkan nilai ttabel = 1,694jadi thitung> ttabel, maka Ha diterima dan H0 ditolak, dan dapat disimpulkan bahwa ada pengaruhsignifikan menggunakan Penerapan Model Pembelajaran Problem Based Learning BantuanMedia Video Terhadap Hasil Belajar Biologi Materi Sistem Ekskresi Di Kelas XI SMA PencawanSchool Medan.
Langkah Politik Belanda di Aceh Timur: Memahami Sisi Lain Sejarah Perang Aceh, 1873-1912
Authors: Muhajir Ahmad
Published: November 2019

Artikel ini membahas mengenai langkah politik kolonialis Belanda di Aceh Timur dalam konteks memahami sisi lain sejarah Perang Aceh (1873-1912). Aceh Timur merupakan daerah di mana perang berakhir lebih cepat dibandingkan daerah lainnya di seluruh Aceh. Selain itu juga merupakan daerah yang memiliki potensi ekonomi yang sangat menggiurkan bagi Belanda kala itu. Metode yang digunakan adalah metode sejarah dengan memanfaatkan banyak literatur yang berhubungan dengan permasalahan yang dibahas. Artikel ini juga menawarkan sebuah penjelasan sejarah alternatif tentang sisi lain dari Perang Aceh yang telah terjadi hampir satu setengah abad yang lalu dengan memposisikan Aceh Timur sebagai latar panggung utamanya. Penjelasan sejarah yang disajikan mencakup kondisi di wilayah Aceh Timur di tengah situasi Perang Aceh; langkah-langkah politik yang diterapkan Belanda untuk menaklukkan negeri-negeri di Aceh Timur; dan kebijakan-kebijakan Belanda membangun dan menata wilayah Aceh Timur setelah perang berakhir sehingga menjadi daerah potensial untuk ekspansi industri dari Sumatera Timur.Kata kunci: Langkah politik Belanda, Aceh Timur, sejarah Perang Aceh.
Strategi Adaptasi Orang Laut di Batam
Authors: Hutagaol Novita Mandasari
Published: November 2019

Artikel ini mengkaji tentang strategi adaptasi Orang Laut di Batam. Pembangunan di Batam yang berkembang ke arah modernisasi berdampak kepada kehidupan Orang Laut sebagai etnik lokal.  Pembangunan di tahun 1970-an di Batam mengakibatkan Orang Laut direlokasi ke darat oleh pemerintah pada masa Orde Baru. Pada akhirnya Orang Laut mengikuti peraturan pemerintah untuk tinggal dan menetap di darat dan melakukan aktivitas sosial seperti masyarakat pada umumnya. Terdapat beberapa bentuk strategi adaptasi yang dijalankan, yakni tetap melakukan aktivitas penangkapan ikan dengan membuat modifikasi alat tangkap dan menjalankan kehidupan sehari-hari dengan tinggal di rumah apung.Kata kunci: Strategi adaptasi, Orang Laut, Batam.
Analisis Implementasi Model Quantum Teaching dalam Pembelajaran
Authors: Lubis Hasrita
Published: November 2019

Analisis kajian metode untuk dijadikan model pembelajaran perlu dilakukan agar para  pebelajar dapat mendesaian rancangan pembelajarannya yang mengacu secara holistik membangun kepribadian siswa memiliki kompetensi tujuan Pendidikan Nasional. Kajian ini menganalisis indikator perilaku pembelajaran implementasi metode Quntum Teaching berasakan tujuan Pendidikan Nasional dalam Undang-Undang Nomor 20 Tahun 2003.  Proses pembelajaran dengan mengamalkan indikator metode Quantum Teaching dalam aktivitas pembelajaran yang dilaksanakannya memberdayakan kompetensi tujuan Pendidikan Nasional mengalami proses internalisasi di dalam kepribadian siswa secara berkelanjutan.Kata kunci: Quantum Teaching, pembelajaran, pendidikan nasional.
Meningkatkan Minat Belajar Siswa pada Kompetensi Dasar Politik Luar Negeri Mata Pelajaran PKN melalui Penggunaan Model Pembelajaran Kooperatif Tipe Tari Bambu Kelas VIB SD Negeri 060930 Medan Johor
Authors: Sembiring Sorita Br
Published: November 2019

Penelitian ini bertujuan untuk mengetahui apakah dengan menggunakan model pembelajaran  kooperatif tipe tari bambu dapat meningkatkan minat belajar siswa pada mata pelajaran PKn di Kelas VIB SD Negeri 060930 Medan Johor T.A 2014/2015. Jenis penelitian ini adalah “Penelitian Tindakan Kelas”, dengan menggunakan model pembelajaran kooperatif tipe tari bambu. Penelitian ini bertujuan untuk mengetahui bahwa dengan menggunakan model pembelajaran kooperatif tipe tari bambu dapat meningkatkan minat belajar siswa pada pokok bahasan politik luar negeri di Kelas VIB SD Negeri 060930 Medan Johor. Penelitian ini terdiri dari 2 siklus, siklus I dan siklus II masing-masing memiliki 2 pertemuan. Pada setiap pertemuan peneliti melakkukan observasi belajar terhadap siswa, untuk mengetahui tingkat minat belajar siswa. Berdasarkan hasil observasi yang dilakukan penulis dengan guru Kelas VIB SD Negeri 060930  Medan Johor yang dilakukan terhadap 30 orang siswa terdapat 24 orang siswa (80%) yang memiliki minat belajar yang kurang dan 6 orang siswa (20%) yang memiliki minat yang cukup. Kemudian pada siklus I memiliki nilai rata-rata 44 (55%), sedangkan pada siklus II yaitu sebesar 69 (87%). Berdasarkan hasil penelitian dari tes siklus I dengan siklus II terjadi peningkatan yang signifikan, dengan demikian dapat disimpulkan bahwa dengan menerapkan model pembelajaran kooperatif tipe tari bambu dapat meningkatkan minat belajar siswa pada mata pelajaran PKn pokok bahasan politik luar negeri di Kelas VIB SD Negeri 060930  Medan Johor. Tahun Ajaran 2014/2015.Kata Kunci: Minat Belajar, Pembelajaran Kooperatif.
A Escola Austríaca de Economia e o Mainstream
Authors: Bernardo Marcel Pereira
Published: November 2019

Após a crise de 2008, o mundo acadêmico passou a buscar alternativas teóricas que pudessem satisfazeras exigências do público em geral relativas aos fenômenos econômicos. O projeto Rebulding Macroeconomics surgiu nesse viés, reunindo economistas mainstream que levantaram sugestões para aperfeiçoamento das teorias econômicas. Por outro lado, é mister notar que alguns economistas austríacos – que previram a crise financeira – ficaram de fora ou à margem desse debate. O objetivo do presente artigo, portanto, é apontar os meios a serem explorados pelos economistas austríacos, para estabelecimento do diálogo aberto e busca de maior inserção nos principais debates econômicos, utilizando como referência o projeto realizado pela Oxford Review e o modelo DSGE.
ARLOKA MAP: MEDIA PENGENALAN NILAI-NILAI KEARIFAN LOKAL DI KAWASAN CANDI PRAMBANAN
Authors: Yusuf Sandy Maulana , Syarqiyah Indah Nurafani , Arrazaq Naufal Raffi
Published: November 2019

Prambanan Temple contains local wisdom values that have not been well informed to domestic visitors. This article aims to introduce Arloka Map, an alternative communication media in a form of physical tour-map containing local wisdom values of the Prambanan Temple Area and to test the effectiveness rate of the Arloka-Map. Observation, literature studies, and instrument test methods were used to collect basic data. To determine the success rate of the proposed strategy, pre- and post-tests were conducted to 50 domestic tourist respondents. The outcomes were then analyzed by using the SPSS application. Results showed that score for visitors that were using the Arloka-Map was higher than visitors who did not use it (i.e. 8.72 vs 4.44). It was concluded that the use of the Arloka-Map assist tourists to know the values of local wisdoms at the temple’s area.
PERKEMBANGAN PENGGUNAAN BETON BERTULANG DI INDONESIA PADA MASA KOLONIAL (1901-1942)
Authors: Setyowati Martha
Published: November 2019

The discovery of reinforced concrete became a major breakthrough in modern construction technology in the early 20th century. In five decades reinforced concrete has developed rapidly and was used in almost all parts of the world. Reinforced concrete was first introduced in Indonesia during the colonial period. The used of reinforced concrete increased along with the construction growth in the Dutch East Indies. The used of reinforced concrete between 1901 and 1942 can be seen from the buildings and infrastructure that still exist today. However the development of reinforced concrete in Indonesia during colonial period not widely explored yet. Because of that this study aims to provide an overview of the development of reinforced concrete used during the colonial period using archaeological data and supported by historical data. This research uses secondary data sources obtained through literature study. Based on this research it can be concluded that the development of the reinforced concrete used in the colonial period showed the progress of construction technology as well as economic and social conditions at that time.
IMPLEMENTASI MANAJEMEN KINERJA DI UNIVERSITAS MUHAMMADIYAH BENGKULU
Authors: Onsardi Onsardi
Published: November 2019

Implementasi Manajemen Kinerja Di Universitas Muhammadiyah Bengkulu, rumusan masalah dalam artikel ini, adalah “Bagaimanakah Implementasi manajemen kinerja pada Universitas Muhammadiyah Bengkulu?. Adapun yang menjadi tujuan penulisan adalah 1. Untuk melihat implementasi manajemen kinerja pada UniversitasMuhammadiyah Bengkulu.2. Untuk melihat kinerja pegawai pada Universitas MuhammadiyahBengkulu. Metode yang digunakan adalah metode deskriptif, dan kesimpulan hasil pembahasan adalah:1. Universitas Muhammadiyah Bengkulu belum melaksanakanmanajemen kinerja dengan baik, sesuai dengan model manajemenkinerja.2. Universitas Muhammadiyah Bengkulu belum membuat rencanastrategis (Renstra) sesuai dengan kebutuhan Universitas.3. Renstra belum menjadi pedoman dalam mejalankan rodaorganisasi.4. Renstra masih bersifat formalitas sebagai kelengkapan sebuahUniversitas saja.
EFFECT OF EMPOWERMENT ON EMPLOYEES PERFORMANCE
Authors: Onsardi Onsardi
Published: November 2019

Rumusan Masalah dalam penelitian in adalah “Apakah ada pengaruh empowerment terhadap kinerja karyawan? Adapun yang menjadi tujuan peenulisan adalah:1. Untuk mendeskripsikan konsep empowerment.2. Untuk mendeskripsikan konsep kinerja karyawan.3. Untuk menganalisis pengaruh empowerment terhadap kinerja karyawan.Metode yang digunakan adalah metode deskriptif, dan kesimpulan penulisan artikel ini adalah:1. Dellegation of authority mempunyai pengaruh terhadap kinerja karyawan.2. Reward based perpormance mempunyai pengaruh terhadap kinerja karyawan.3. Participating management mempunyai pengaruh terhadap kinerja karyawan.
Pengaruh Media Sosial Terhadap Sikap Remaja
Authors: Windafronika
Published: November 2019

Era globalisasi ini teknolgi mengalami kemajuan yang sangat pesat, tidak dapat dipungkiri hadirnya internet semakin dibutuhkan dalam kehidupan-sehar-hari, baik dalam kegiatan sosialisasi, pendidikan, bisinis, dsb. Tidak dapat dipungkiri bahwa media sosial mempunyai pengarauh yang besar dalam kehidupan seseorang. Seseoran yang awalnya kecil bisa menjadi bear dengan media sosial, begitupun sebaliknya. Bagi masyarakat khususnya kalangan remaja, media sosial sudah menjadi candu yang membuat penggunanya tiada hari tanpa membuka media sosial. Padahal dalam masa perkembangannya, disekolah remaja berusaha untuk mencari identitasnya dnegan bergaul bersama teman sebayanya. Penelitian ini bertujuan untuk mengetahui pengaruh media sosial, menjelaskan mengenai apa saja yang pengaruh media sosial bagi remaja dimasa perkembangan kemudian untuk mengetahui apa saja pengaruh sikap remaja yang disebabkan oleh media sosial saat ini. Jenis metode penelitian yang digunakan untuk penelitian ini adalah penelitian kualitatif.Metode penelitian kualitatif digunakan karena ingn mendalami suatu fakta, gejala dan peristiwa pengaruh media sosial terhadap sikap remaja di lapangan sebagaimana adanya dalam konteks ruang dan waktu serta situasi lingkungan remaja secara alami. Peneliti menginginkan hasil penelitian berupa rincian data yang lebih kompleks tentang fenomena yang sulit diungkapkan oleh metode kauntitatif dan tidak memerlukan pengolahan angaka dan statistika. Hasil dari penelitian kualitatif yang dibutuhkan peneliti adalah berupa suatu informasi yang mendalam mngenai pengaruh media sosial bagi remaja itu sendiri. Teknik penelitian yang digunakan untuk mengumpulkan data dalam penelitian ini berupa teknik dokumentatif.
Kejadian Bom Di tiga tempat ibadah di surabaya
Authors: ramadhan yanuar satya
Published: November 2019

Kasus bom bunuh diri di tiga tempat yang di Surabaya pada hari minggu 13 Mei 2018. Tempat ibadah tersebut adalah GPPS Arjuna , GKI Diponegoro , dan Gereja Santa Maria Tak Bercela, tersangka yang melakukan bom bunuh diri pada GPPS Arjuna adalah Dita Oepriarto , di GKI Diponegoro adalah Puji Kuswati dan putrinya sedangkan di Gereja Santa Maria Tak Bercela adalah Yusuf dan Firman. Bom bunuh diri di tiga tempat ibadah disurabaya ini dilakukan oleh satu keluarga . Jendral Tito menamakan bom tersebut adalah The Mother Of Satan, korban meninggal sekitar 18 orang yang meliputi 6 pelaku dan 12 masyarakat.
Goodness of the side of the dominant hand: A registered direct replication of Casasanto (2009)
Authors: Sasaki Kyoshiro , Yonemitsu Fumiya , Yamada Yuki
Published: November 2019

People associate emotional valence with the side of their dominant and non-dominant hands. Specifically, positive (negative) valence is linked with the side of dominant (non-dominant) hand known as the horizontal-valence metaphor. A previous study demonstrated that participants placed a good (bad) object on the side of their dominant (non-dominant) hand (Casasanto, 2009, J. Exp. Psychol.: Gen, 138, 351–367). This phenomenon indicates that the horizontal-valence metaphor influences our behavior. However, subsequent studies reported that the effect of the horizontal-valence metaphor was not found in the other tasks. These studies raise the following question: Is the effect of the horizontal-valence metaphor robust? In the present registered report, we conducted a direct replication of Experiment 1 from Casasanto’s study (2009). We could not replicate the results of right-handers in the previous study. Moreover, most of the effect sizes in present research were small even though their results were statistically significant. Our findings throw doubt on the robustness of the horizontal-valence metaphor. #Pre-registration of the study can be found at https://psyarxiv.com/rfvp2
Interpretability of statistical approaches in speech and language neuroscience
Authors: Bouton Sophie , Chambon Valerian , Golestani Narly , Formisano Elia , Proix Timothée , Giraud Anne-Lise
Published: November 2019

Traditional theoretical models conceive the neural system of speech and language as a set of hierarchical modules that transform a continuous acoustic stream into discrete concepts. This modular and hierarchical view arises from traditional neuropsychology and has largely been backed up by statistical models that allow for controlled variation of a few experimental factors at a time, thus allowing clear interpretations to be made. Recently, the exploration of large datasets has led to the emergence of more complex statistical models that can capture neural patterns distributed across space and time. However, the interpretation of these models is more challenging due to increased correlations and spatio-temporal dependencies between variables, which obscure the links between neural activations and linguistic functions. To guide the experimenter and data analyst through the complexity of approaches in language neuroscience, we have designed a taxonomy that delineates the trade-off between model complexity and interpretability.
Understanding the role of linguistic distributional knowledge in cognition
Authors: Wingfield Cai , Connell Louise
Published: November 2019

The distributional patterns of words in language forms the basis of linguistic distributional knowledge and contributes to conceptual processing across cognition. While corpus-based linguistic distributional models (LDMs) can capture human performance in many cognitive tasks, questions remain regarding the nature and role of linguistic distributional knowledge in cognition. We propose that LDMs can be a cognitively plausible approach to modelling linguistic distributional knowledge when assumed to represent an essential component of semantics that is grounded in a complementary sensorimotor component, when trained on appropriate corpora that are representative of human language experience, and when they capture syntagmatic, paradigmatic, and bag-of-words distributional relations that are useful to cognition. Using an extensive set of cognitive tasks that vary in their conceptual complexity and response measurements, we systematically evaluate a wide range of model families (predict vector, count vector, n-gram), corpora varying in size and quality, and parameter settings. Our findings demonstrate that there is no one-size-fits-all approach for how linguistic distributional knowledge is used across cognition, and that its use depends on the conceptual complexity of the task at hand. Conceptually simple tasks that rely on single paradigmatic relations are relatively easy to model even with poor-quality language experience, but conceptually complex tasks that involve sophisticated processing of diverse and/or abstracted relations require a diverse set of task-specific models and high-quality language experience. Linguistic distributional knowledge is a rich source of information about the world that can be accessed flexibly according to cognitive need. Online materials are available at https://osf.io/uj92m/.
Le capitaliste philanthrope et l’entrepreneur socialement responsable : les nouveaux « héros socialistes » de la Chine contemporaine
Authors: Desplain Aurélia
Published: November 2019

Comment penser la figure de l’entrepreneur privé en Chine contemporaine, et plus particulièrement la place de la philanthropie et de la responsabilité sociale dans la construction de cette figure par l’État-parti ? Comment les entrepreneurs se saisissent-ils de ces représentations pour légitimer leurs positions sociales, et quelles réappropriations peut-on observer chez les travailleurs et citoyens chinois aujourd’hui ? Les données mobilisées sont tirées d’un travail de thèse en anthropologie sociale qui interroge les logiques globalisées d’un actuel capitalisme philanthrope. Sont ici présentés des exemples de déploiement d’un capitalisme philanthropique et de responsabilité sociale d’entreprise en Chine contemporaine, dans le but de nourrir une analyse des effets que les représentations du capitalisme, du capitaliste et de la philanthropie ont sur les personnalités et la pensée sociale chinoises.
Multiple paraspinal intramuscular myxomas: case report
Authors: Domino Joseph S. , Weindel Shane , Woodrow Sarah
Published: November 2019

Intramuscular myxomas (IMMs) are rare benign tumors of mesenchymal origin that are most often located in large skeletal muscles, particularly of the thigh. They have also been reported within the paraspinal musculature and should be considered in the differential diagnosis of a paraspinal mass. These lesions can cause neurological symptoms due to mass effect. This is a report of a 52-year-old man with multiple paraspinal tumors that exhibited concerning growth on serial imaging studies. To the authors’ knowledge, this represents the first report of a patient with multiple paraspinal myxomas. CT-guided biopsy followed by surgical excision of the largest mass was performed. Histopathological analysis was consistent with an IMM. Patients with multiple IMMs often have an underlying genetic syndrome such as Mazabraud syndrome, McCune-Albright syndrome, or Carney complex. Despite variable growth patterns and associations with genetic syndromes, multiple IMMs have had no documented cases of malignant transformation into myxoid sarcoma; therefore, surgical excision should be considered based on a patient’s individual symptoms.
Impact of single-aisle aircraft with reduced design range on airline operations and dynamics of fleet composition
Authors: Rosskopf Michael , Lehner Stephan , Luetjens Klaus
Published: November 2019

This study investigates the impact of employing single-aisle aircraft with reduced design range on airline operations and the dynamics of fleet composition. While previous research has mostly evaluated such concepts at a single aircraft level, the fleet-level implications remain less clear. Here, a linear programming model for mid- to long-term airline fleet planning optimizes fleet composition, fleet development, and fleet deployment within a 10-year planning horizon for a given set of candidate aircraft. The model takes into account network development, operational and cost data, existing fleet, and the availability of aircraft and capital. This study uses data for a major European network airline; the results suggest that introducing aircraft with a design range of ~1,500 km to the existing fleet would be optimal in terms of airline economic performance. The new reduced-range aircraft would partly replace existing aircraft with longer design ranges, but the replacement would span over the entire planning horizon. Savings in variable cash operating costs of ~3% would offset financial penalties due to a lower fleet commonality.
A preliminary emission model to analyze the impact of various personal aircraft configurations on the environment
Authors: Rohacs Daniel
Published: November 2019

The goal of this paper is to introduce a preliminary emission model in order evaluate and compare the environmental load of various advanced small or personal aircraft configurations. The paper first gives the motivations behind the European small aircraft related projects / investigations, and summarizes some of the most promising configurations, developed in the European Commission funded personal aircraft project. It also introduces (i) the preliminary method of the emission modeling, (ii) the developed user interface that facilitates the access to the model even for non-experts, and (iii) the calculated environmental loads related to various personal aircraft configurations and missions in terms of CO, HC and NOx. Finally, purely from an environmental point of view, it provides basic recommendations and proposals for future development of the personal aircraft segment.