bluuebunny/crossref_metadata_2025 huggingface dataset:
The Structural Reform of Mexican Energy Industry
Authors: Yakovlev P.
Published: February 2021

At present, Mexico makes an ambitious attempt to carry out far-reaching structural reforms. Of key importance is the reform in the energy sector which is the foundation of the national economy. The reform course of the Mexican authorities and the matrix of their political actions deserve scrutiny, since their value transcends national boundaries, reflects problems inherent in many developing countries paving the way in shifting sands of global economic relations. Mexico seeks to seamlessly combine the politics of the energy sector reform with pragmatic interests of transnational corporations willing a broader access to Mexico's oil and gas resources. This is one of international aspects of the energy reform in Mexico. Another one is that using reforms Mexican authorities yearn to strengthen Mexico's geopolitical role, confirm its status of a rising power. Acknowledgement. The article has been supported by a grant of the Russian Science Foundation. Project № 14-18-02713.
Pengaruh Permainan Konstruktif Tangram terhadap Berfikir Kreatif pada Siswa Sekolah Dasar
Authors: Nugraheni Irawan Jenny , Nanda Priyatama Aditya , Fitriani Afia
Published: February 2021

Tangram constructive game is one of the games that can be used to train creative thinking. The purpose of this study was to know the effect of tangram constructive game on creative thinking in elementary school student. The hypithesis of this study is that there is a significant effect of tangram constructive game on creative thinking before and after intervention. This research is an experimental study with nonequivalent crontrol group design. Data collection uses figural creativity test. Data analysis used the Mann-Withney technique with the SPSS statistical program. The result of the study show that the value of Z count = -2,363 with p = 0,18 (p<0,05). So, if can be concluded that there is a significant effect on creative thinking after intervention
Peningkatan Kebahagiaan di Tempat Kerja : Penggunaan Website Tiga Hal Baik pada Pelatihan Kebersyukuran
Authors: Rahmat Laba Nur , Setyanti Kusumaputri Erika
Published: February 2021

This study aims to determine the effectiveness of gratitude exercise using three good things techniques on happiness at work enhancement. Participants of this study were 15 employees aged 21-28 years divided into two groups: eight participants in the experimental group and seven participants in the control group. The design was a randomized two-group pretest-posttest. Collecting data used to happiness at work scale with Likert model prepared by the researcher. Data analysis methods used by using Mann Whitney U technique for differences of the gain score in the experimental group and control group data score. The result of gain score analysis showed t value = 8.500 and p-value of 0.021 (p<0.05), indicating there is a significant difference between the experimental group and control group after gratitude exercise. The result shows that gratitude exercise using three good things techniques is effective to increase happiness at work of employees.
Pelatihan Shalat Khusyuk Meningkatkan Kebahagiaan pada Family Caregiver Pasien Stroke
Authors: Nikmatul Millah Futyhat , Uyun Qurotul , Sulistyarini Rr. Indahria
Published: February 2021

This research aims to observe the effectiveness of the devout prayer training to improve the happiness of the family caregiver of the patients with stroke. Eight caregivers of patients with stroke were involved in this research. The subject was divided into two groups: experimental group (n= 4) and control group (n = 4). The research design used was pretest-post test control group design measured by three times (pretest, post test, and follow-up within two weeks). The measurement tools used in this research was the scale of happiness by Seligman. The result of the research showed a significant improvement in the happiness score in the family caregiver of the patients with stroke after given the treatment in the form of the devout prayer training.
Meningkatkan Kematangan Karir Siswa SMP Melalui Pelatihan Perencanaan Karir
Authors: Ghassani Maulidia , Ni’matuzahroh Ni’matuzahroh , Anwar Zainul
Published: February 2021

The research objective was to increase the career maturity of junior high school students through career planning training based on five stages of decision making CASVE Cycle (Communicating, Analyzing, Synthesis, Valuing, Exception). The research method was a quasi-experimental study with a one-group pretest-post test group design. The research subjects were 10 students who were taken by purposive sampling. The research instrument used a career maturity scale and data analysis used the Wilcoxon statistical test. The results showed that career planning training increased the career maturity of junior high school students.
Phytochemical content of traditional herbal medicines in South and Central Kalimantan
Authors:   Balai Penelitian dan Pengembangan Lingkungan Hidup dan Kehutanan Banjarbaru, Lestari Fajar , Andriani Susy ,   Balai Penelitian dan Pengembangan Lingkungan Hidup dan Kehutanan Banjarbaru
Published: February 2021

The use of medicine derived from natural ingredients had already begun since ancestors and passed down from generation to generation. However, the properties of those various plants were not clinically been proven. This study aims to find out phytochemical content of medicinal forest plants based on information from the local communities. The study was conducted in two ecosystem types namely wetland ecosystem in peat swamp of Sungai Rasau, Sebangau National Park, Central Kalimantan and dryland ecosystem in Meratus Mountain slope, Peramasan Bawah village, South Kalimantan. Vegetation data in the field was collected by making line transect. Phytochemical analyses qualitatively was done in the Faculty of Math and Natural Science laboratory of Lambung Mangkurat University, while specimen samples were taken from some species that commonly used by the local communities for medicinal purpose as 100 gr to 150 gr of gross weight of each plants. . Then the plant specimens were tested for their secondary metabolites comprised steroids/triterpenoids, quinone, tannin, flavonoids, saponins, and alkaloids tests in the laboratory. The research results showed that medicinal plants used by local communities were still available in their natural habitat In dryland ecosystem, there were 27 plant species discovered and 22 species found in peat swamp ecosystem that potentially use as herbal medicine. Phytochemical analyses showed that most of the plant samples were proved to have secondary metabolites in the form of steroid/triterpenoids, quinone, tannin, flavonoid, saponins and alkaloids. This condition showed that those plant species have potential as herbal medicine. However, those plant species still need further tests related to certain active ingredients potentially use as biopharmacy. Keywords: dryland, secondary metabolite, peat swamp, medicine
ANALISIS JARINGAN GSM 1800 MHZ PADA SEKTOR YANG MENGGUNAKAN FREQUENCY REUSE TERHADAP KUALITAS PELAYANAN BTS DKI JAKARTA DI PT. TELKOMSEL INDONESIA, TBK.
Authors: Ariska Cahya  , Wisnu Djatmiko  , Aodah Diamah
Published: February 2021

Abstrak- Tujuan dari penelitian ini adalah mencari hubungan antara Co – Channel Interference pada konsep Frequency Reuse terhadap kualitas pelayanan BTS DKI Jakarta.Penelitian ini menggunakan metode kuantitatif dimana data diolah dengan menggunakan korelasi product momment dengan bantuan microsoft excell. Penelitian ini menggunakan data sekunder yang bersumber dari PT, Telkomsel, tbk. yang diambil dengan metode drive test. Sampel yang diambil berjumlah 7 tempat di DKI Jakarta. Data yang diambil merupakan data dari nilai Carrier to Interference (C/I), juga nilai Rx Level dan jarak antara sel asli dan sel co – channel.Hasil penelitian ini menunjukkan bahwa nilai Rx Level berpengaruh terhadap nilai Carrier To Interference. Dimana Peneliti menggunakan Carrier To Interference. Dimana peneliti menggunakan Carrier To Interference untuk melihat kualitas dari pelayanan jaringan GSM 1800 MHz dan menggunakan Rx Level sebagai parameternya.

Kata kunci : Co – Channel Interference, Frequency Reuse, GSM 1800 MHz, Carrier To Interference, Rx Level.

 

Abstract - The purpose of this research is to find a relationship between the Co - Channel Interference in Frequency Reuse concept of service quality BTS Jakarta.This research uses quantitative method where data is processed by using product moment correlation with the help of microsoft excell. This study uses secondary data sourced from PT, Telkomsel, tbk. captured with drive test method. The sample is 7 places in DKI Jakarta. The data taken is data from Carrier to Interference (C / I) value, also Rx Level and distance between original cell and co-channel cell.The results of this study indicate that the value of Rx Level effect on the value of Carrier To Interference. Where Researchers use Carrier To Interference. Where the researcher uses Carrier To Interference to see the quality of GSM 1800 MHz network service and use Rx Level as its parameter.

Keywords: Co - Channel Interference, Frequency Reuse, GSM 1800 MHz, Carrier To Interference, Rx Level
PROTOTYPE KERANJANG BELANJA PINTAR BERBASIS ARDUINO UNO
Authors: Saputra Ryan , Pitoyo Yuliatmojo  , Aodah Diamah
Published: February 2021

Tujuan Penelitian ini adalah membuat sistem Keranjang Belanja yang dapat mengikuti customer yang sedang berbelanja, membaca kode barcode dari belanjaan, dan mengetahui berat belanjaan yang sudah ada didalam keranjang belanja. Penelitian ini dilakukan menggunakan metode penelitian dan pengembangan (research and development) yang dikembangkan oleh Brog & Gall. Prinsip dasar yang merupakan karakteristik metode penelitian dan pengembangan 4 tahap Model Brog & Gall, yaitu: (1) tahap analisis, (2) tahap perancangan, (3) tahap pengembangan, (4) tahap pengujian. Hasil Penelitian Keranjang Belanja Pintar dapat direalisasikan dengan penggabungan sub-sistem yang berfungsi dengan baik, diantaranya. Arduino Uno, Raspberry, Display LCD TFT Raspberry, webcam, Sistem Pengukuran Berat Berbasis Load Cell 5Kg dan HX711, Buzzer, Ultrasonik, Motor DC, Modul Monster Driver Motor Shield VNH2SP30, Scanner Barcode, LCD 16×2, dan Accumulator. Sistem Keranjang Belanja Pintar dapat mengikuti objek yang sudah terkunci oleh sistem kamera webcam dengan cara menekan tombol “a” yang terdapat pada keyboard, dapat mengetahui hasil belanjaan yang tersimpan disuatu file yang sudah ditentukan dan tersimpan pada flashdisk agar file tersebut dapat dilihat oleh pihak kasir agar bisa melihat jumlah harga belanjaan, dan dapat mengetahui berat belanjaan yang sudah terdapat pada keranjang belanja maksimal 20Kg.
INSTALASI RADIO POINT TO POINT MIKROTIK TIPE CERAGON FIBEAIR 1500P DARI CIKARANG KE CIMANGGIS
Authors: Setiaji Dimas , Sandi Efri
Published: February 2021

Perangkat Ceragon FibeAir® IP-MAX2 (G) adalah perangkat radio Point to Point berkapasitas tinggi yang memungkinkan untuk men-deliver data dengan kapasitas besar. Sebuah penyedia jasa jaringan dituntut untuk meningkatkan layanan dalam kualitas suara dan data. Untuk memberikan pelayanan yang semakin baik, maka perlu dioptimalkan layanan yang sudah ada maupun layanan yang akan dibuat. Makalah komprehensif ini bertujuan untuk mengintalasi radio point to point mikrotik tipe Ceragon FibeAir 1500P untuk membackup jaringan dan meningkatkan kualitas layanan data di PT. Citra Sari Makmur. Dalam menginstal radio point to point harus sesuai dengan tahapan dan memperhatikan frekuensi kerja agar dapat mempertimbangkan noise dan daya yang diterima serta melakukan pointing antenna supaya parameter yang didapat sesuai dengan yang diinginkan.
PEMBUATAN DRY BOX PENGATUR KELEMBABAN OTOMATIS SEBAGAI PENYIMPANAN KAMERA DSLR DENGAN RFID BERBASIS ARDUINO AT MEGA 2560
Authors: Pangestu Jaka , Yusro Muhammad , Djatmiko Wisnu
Published: February 2021

Tujuan pembuatan alat pada penelitian ini adalah merancang,membuat, dan menguji dry box alat pengatur kelembaban otomatis sebagai penyimpan kamera dengan RFID berbasis Arduino At Mega 2560 untuk menjaga kelembaban kamera secara otomatis didalam dry box agar tidak muncul jamur pada kamera karena akan mengurangi kualitas pada kamera tersebut untuk dipergunakan. Penelitian ini dilakukan dengan menggunakan metode rekayasa teknik dengan tahapan yang meliputi desain sistem, identifikasi subsistem, desain perangkat keras, desain perangkat lunak, pengujian perangkat keras, pengujian perangkat lunak, dan analisis pengujian Sensor yang digunakan untuk mendeteksi nilai dari kelembaban dan suhu adalah sensor DHT22. RFID dan keypad sebagai pengaman sistem yang dirancang dengan kode keamanan dan pembaca keberadaan kamera menggunakan sensor tekan limit switch. Sistem yang dibuat dapat digunakan dalam membaca kelembaban dan suhu. Pemanas peltier yang digunakan untuk menurunkan kelembaban jika sensor membaca kelembaban melebihi 65 % maka pemanas peltier akan menyala. Hasil dari pembacaan oleh sistem berjalan dengan baik dan juga pembacaan kartu RFID dan kode keamanan pada sistem bekerja dengan baik.
RANCANG BANGUN TRAINER DENGAN LCD LAYAR SENTUH MENGGUNAKAN ARDUINO MEGA 2560 SEBAGAI MEDIA PEMBELAJARAN PADA MATA KULIAH ELEKTRONIKA DIGITAL
Authors: Fitri Nur Rosita , Bintoro Jusuf , Yuliatmojo Pitoyo
Published: February 2021

Abstrak. Penelitian ini merupakan jenis penelitian Research and Development (R&D) yang bertujuan untuk mengembangkan trainer dengan LCD layar sentuh menggunakan Arduino Mega 2560 sebagai media pembelajaran pada mata kuliah Elektronika Digital yang meliputi; 1) Potensi dan masalah, 2) Pengumpulan data, 3)Desain produk, 4) Validasi desain, 5) Revisi Desain, 6) Ujicoba Produk, 7) Revisi Produk, 8) Ujicoba Pemakaian. Objek penelitian ini adalah trainer yang dilengkapi dengan modul praktikum elektronika digital. Metode yang digunakan dalam pengumpulan data pada penelitian ini meliputi pengujian dan pengamatan terhadap unjuk kerja trainer dengan LCD layar sentuh serta pengujian yang dilakukan dengan memberikan angket kepada 38 mahasiswa Pendidikan Teknik Elektronika Universitas Negeri Jakarta. Uji kelayakan media pembelajaran di uji oleh ahli materi dan ahli media. Hasil pengembangan media terdiri dari trainer dengan LCD layar sentuh yang berisi 3 modul rangkaian digital yaitu modul gerbang logika, modul flip-flop dan modul rangkaian kombinasional. Hasil penelitian menunjukan persentase kelayakan media diperoleh sebesar 94,64% dari ahli materi, 96,96% dari ahli media, dan 84,5% dari hasil ujicoba terhadap mahasiswa. Dari ketiga perolehan tersebut, media pembelajaran ini masuk dalam kategori sangat layak untuk digunakan sebagai media pembelajaran pada mata kuliah Elektronika Digital di program studi Pendidikan Teknik Elektronika Universitas Negeri Jakarta.
DESAIN DAN IMPLEMENTASI JARINGAN KOMPUTER BARU UNTUK MENINGKATKAN KUALITAS KOMUNIKASI DATA PADA KAMPUS B RAWAMANGUN UNIVERSITAS NEGERI JAKARTA
Authors: Aditya Faishol Robbani  , M. Ficky Duskarnaen  , Hamidillah Ajie
Published: February 2021

Tujuan dari penelitian ini adalah untuk mendesain dan mengimplementasikan jaringan komputer baru untuk meningkatkan kualitas komunikasi data dengan sasaran penelitian pada kampus B Universitas Negeri Jakarta. Penelitian ini dilaksanakan melalui tahapan pengamatan menggunakan paramater yang ditentukan, yaitu: throughput dan kecepatan Internet. Setelah tahap pengamatan selesai, selanjutnya dilakukan desain dan implementasi berdasarkan pengamatan yang telah dilakukan dan persetujuan dari UPT TIK UNJ. Implementasi berupa mengubah jenis komunikasi data menggunakan layer 2 dan pergantian perangkat jaringan yang telah melewati MTBF. Pengujian dilakukan dengan menggunakan metode yang sama pada tahap pengamatan untuk mengetahui hasil implementasi. Hasil penelitian menunjukkan terjadi peningkatan throughput dan kecepatan Internet pada kampus B UNJ. Analisis penelitian menunjukkan kecepatan Internet yang didapat juga telah memenuhi standar AT&T sebesar 1,5 Mbps serta survei kepuasan mahasiswa terhadap jaringan komputer di kampus B menunjukkan cukup untuk mendukung kegiatan kampus. Dapat disimpulkan bahwa dengan menggunakan tahapan yang telah disebutkan dapat meningkatkan kualitas komunikasi data pada kampus B Universitas Negeri Jakarta.
PERBANDINGAN MODEL PROBLEM BASED LEARNING DENGAN INQUIRY LEARNING TERHADAP HASIL BELAJAR SISWA PADA MATA PELAJARAN JARINGAN DASAR KELAS X TKJ SMK DINAMIKA PEMBANGUNAN 1 JAKARTA
Authors: Fissa Bella  , Yuliatri Sastrawijaya  , Vina Oktaviani
Published: February 2021

Penelitian ini bertujuan untuk mengetahui perbandingan model Problem Based Learning dengan model Inquiry Learning terhadap hasil belajar siswa pada mata pelajaran Jaringan Dasar kelas X TKJ di SMK Dinamika Pembangunan 1 Jakarta. Model Problem Based Learning diterapkan di kelas eksperimen yaitu kelas X TKJ 1 dan model pembelajaran Inquiry Learning diterapkan di kelas kontrol yaitu kelas X TKJ 3. Dalam penelitian ini metode yang digunakan adalah metode eksperimen kuantitatif, yaitu dengan memperlakukan dua kelas dengan perlakuan atau tindakan yang berbeda. Untuk mendapatkan data dari penelitian ini dilakukan cara menguji siswa dengan memberikan tes akhir (posttest) untuk mengukur kemampuan kognitif dengan tes pilihan ganda. Berdasarkan hasil penelitian dapat disimpulkan bahwa terdapat perbedaan hasil belajar antara model Problem Based Learning dengan model Inquiry Learning pada mata pelajaran Jaringan Dasar Kelas X TKJ di SMK Dinamika Pembangunan 1 Jakarta yang dibuktikan dengan hasil analisis data (uji-t) yaitu diperoleh nilai thitung = 2,270 dan ttabel = 2,03. Karena thitung > ttabel  yaitu 2,270 > 2,03, maka dapat dikatakan bahwa H0 ditolak. Hasil belajar siswa yang diterapkan dengan model Problem Based Learning mendapatkan nilai rata-rata sebesar 85,228, sedangkan siswa yang diterapkan dengan model Inquiry Learning mendapatkan nilai rata-rata sebesar 82,919. Hal ini membuktikan bahwa siswa yang diajarkan menggunakan model Problem Based Learning memiliki nilai rata-rata yang lebih tinggi dibandingkan dengan siswa yang diajarkan dengan menggunakan model Inquiry Learning.
PERBANDINGAN JACCARD SIMILARITY DENGAN EXTENDED JACCARD SIMILARITY PADA PENALARAN BERBASIS KASUS
Authors: Murien Nugraheni
Published: February 2021

Penalaran berbasis kasus memberikan solusi pada suatu kasus baru dengan menggunakan pengetahuan lalu yang tersimpan pada basis pengetahuan. Dilakukan perhitungan kasus baru dengan menggunakan sampel gejala yang akan didiagnosa dengan kasus lama yang telah tersimpan pada basis data. Kasus lama dengan nilai similaritas tertinggi akan diambil dan kemudian solusi dari kasus lama tersebut akan dijadikan solusi bagi kasus yang baru. Jika suatu kasus tidak berhasil didiagnosa, maka kasus tersebut akan dilakukan revisi oleh seorang pakar. Kasus yang berhasil direvisi akan disimpan ke dalam basis data untuk dijadikan pengetahuan baru.

Pada penelitian ini dilakukan dua perbandingan metode untuk menghitung tingkat kemiripan antara kasus baru dengan kasus lama. Metode similarity yang digunakan adalah metode Jaccard Similarity dan Extended Jaccard Similarity. Hasil dari penelitian ini diperoleh bahwa metode Extended Jaccard Similarity mempunyai tingkat kemiripan sebesar 52.6818% sedangkan metode Jaccard Similarity memiliki tingkat kemiripan sebesar 47.3181%.
PENGEMBANGAN APLIKASI M-COMMERCE PADA TOKO OPTIK MENGGUNAKAN ANDROID STUDIO
Authors: Egy Muhammad Rianof  , Bambang P. Adhi  , Z.E. Ferdi F. Putra
Published: February 2021

Seiring dengan perkembangan teknologi informasi dan komunikasi, membuka peluang untuk melakukan transaksi bisnis melalui handphone. Kegiatan bisnis melalui handphone inilah yang kemudian disebut dengan m-commerce. Tujuan dari penelitian ini adalah terciptanya aplikasi Android m-commerce yang memberikan kemudahan bagi calon customer kacamata dalam proses pembelian kacamata. Penelitian ini menggunakan metode Scrum yang memiliki 3 tahapan dalam pelaksanaannya yaitu: tahap Pre-game, Development, dan Post-game. Pada tahap Pre-game, segala perencanaan sebelum memulai proses pengembangan sistem dalam bentuk Product Backlog yang membutuhkan persetujuan dari klien, task list, dan jadwal pengerjaan sistemnya. Pada tahap Development, dilakukan pengembangan produk secara iterasi mulai dari perancangan, desain, membuat kode, dan pengujian sistem sesuai jumlah sprint. Pada tahap Post-game, produk sudah dapat dikatakan selesai dikembangkan. Hasil dari penelitian ini adalah customer dapat langsung mengunggah foto resep dari dokter dihalaman pemesanan atau bisa langsung menuliskan informasi lensa untuk mata kanan dan mata kiri yang dibutuhkan customer dan status produk yang sudah dipesan bisa langsung dilihat statusnya oleh customer di menu order status.
PENGEMBANGAN SISTEM INFORMASI AKADEMIK BERBASIS WEB DI SMK BAKTI IDHATA JAKARTA
Authors: Muhammad Nur Afandy  , Widodo  , Bambang Prasetya Adhi
Published: February 2021

Penelitian ini bertujuan mengembangkan sistem informasi penilaian dengan basis web, untuk mengembangkan sistem sebelumnya di SMK Bakti Idhata Jakarta yang menerapkan sistem pengolahan penilaian berbasis aplikasi spreadsheet yang masih ada kekurangan dalam pelaksanaannya, yaitu belum dipakai secara sistematis, belum fleksibel, dan belum terbuka dalam hal penilaian. Pengembangan sistem ini menggunakan metode pengembangan Agile yaitu model Scrum. Proses dalam Scrum menggunakan tiga fase, yaitu fase pre-game, merancang segala kebutuhan dalam proses pengembangan. Fase game, melakukan proses pengembangan yang dibagi dalam dua sprint secara iterasi sekaligus incremental. Terakhir fase post-game, saat sistem siap digunakan. Berdasarkan hasil pengujian fungsional oleh pihak sekolah, yaitu terdiri atas empat pengguna (administrator, guru mata pelajaran, wali kelas, dan siswa), sistem ini berjalan dengan baik dalam mengolah penilaian sesuai kurikulum 2013, menghasilkan laporan penilaian, dan mendukung keputusan kenaikan kelas sederhana.
DESAIN DAN IMPLEMENTASI PADA WIFI PUSTIKOM FREE ACCESS DI PUSAT TEKNOLOGI INFORMASI DAN KOMUNIKASI UNIVERSITAS NEGERI JAKARTA MENGGUNAKAN MIKROTIK DAN WIRESHARK UNTUK ANALISIS TERHADAP SERANGAN PACKET SNIFFING DAN NETCUT
Authors: Reivaldi Kesuma Kagi  , Muchammad Ficky Duskarnaen  , Hamidillah Ajie
Published: February 2021

Di lingkungan UPT TIK kampus A universitas negeri jakarta hotspot internet tanpa password dibutuhkan untuk mencari materi perkuliahan, mengirim email, dan mengakses layanan kampus seperti sistem informasi akademik. UPT TIK menyediakan fasilitas internet yang bisa diakses pelajar, pengajar dan karyawan melalui Pustikom Free Access. Pengguna dapat mengakses hotspot kapan saja tanpa harus login atau butuh password. Namun koneksi antara pengguna bisa saja diganggu oleh pengguna netcut yang dapat memutuskan jaringan kapan saja. Oleh sebab itu, dibutuhkan network analyzer.

Metode yang dipakai untuk membuat desain dan implementasi pustikom free access yaitu rekayasa teknik. Proses untuk membuat pustikom free access dimulai dari menginstal sistem operasi windows yang berfungsi untuk menjalankan aplikasi yang dibutuhkan oleh peneliti, menginstal aplikasi winbox, wireshark (network analyzer), dan ujicoba menggunakan jaringan lokal sebelum diterapkan di jaringan pustikom free access. Proses pengujian perangkat menggunakan metode blackbox testing dari sisi perangkat keras dan perangkat lunak. Hasil dari pengujian menunjukkan bahwa desain pustikom free access dapat berjalan dengan baik dan dapat dijadikan referensi untuk diterapan pada hotspot pustikom free access.
ANALISIS KINERJA PARAMETER THROUGHPUT DAN DELAY AKSES INETRNET DI SMK KARYAGUNA JAKARTA SELATAN
Authors: Vanny Andini  , Lipur Sugiyanta  , Bachren Zaini
Published: February 2021

Penelitian ini dilakukan untuk menganalisa kinerja parameter throughput dan delay akses internet di SMK Karyaguna menggunakan piranti lunak Axence Net Tools Pro 5.0. Penelitian ini menggunakan metode penelitian rekayasa teknik, tahap implementasi hanya sampai pada tahapan pengukuran meliputi throughput dan delay dengan melakukan monitoring streaming  dari laptop client ke server Berdasarkan hasil akhir dari analisis dapat simpulkan bahwa kinerja parameter throughput dan delay pada jaringan SMK Karyaguna masih jauh dari kata layak karena dipengaruhi oleh ke 2 parameter tersebut yaitu throughput dan delay. Throughput pada titik akses ruang guru dan titik akses ruang TKJ untuk perangkat monitor server www.yahoo.com didapatkan 5.77872%; www.detik.com didapatkan 33.0752%; www.facebook.com didapatkan 14.1951%. Delay pada www.yahoo.com didapati rata-rata delay terbesar yaitu pada pengukuran pada ruang TKJ sebesar 435 ms, delay ini menurut versi TIPHON termasuk kategori delay jelek karena delay >150 ms, untuk pengukuran pada ruang guru didapati rata-rata delay sebesar 121 ms mendapatkan predikat sedang karena delay berkisar 100 sampai dengan 150. Setelah itu untuk perangkat server www.detik.com pada titik akses guru mendapatkan delay 118 ms mendapatkan predikat sedang dan pada titik akses ruang TKJ delay sebesar 25 ms yang berarti bagus karena delay berkisar 50 sampai dengan 100. Pada perangkat www.facebook.com, workstation ruang guru mendapatkan delay 142 ms yang berarti sedang karena berkisar dari 100 sampai dengan 150ms. Lalu pada workstation ruang TKJ mendapatkan delay 59 yang berarti bagus.
PERANCANGAN OWNCLOUD STORAGE SERVER BERBASIS UBUNTU 20.04 PADA PT. HARRISMA GLOBALTECHNOLOGIES JAKARTA
Authors: Ali Idrus
Published: February 2021

PT.Harrisma Global Technologies Jakarta adalah sebuah perusahaan swasta yang bergerak dibidang IT khususnya sebagai penyedia jasa atau vendor suatu jaringan terhadap perusahaan-perusahaan yang berkerja sama sebagai mitra kerja. penelitian ini bertujuan untuk merancang sebuah sistem penyimpanan berbasis cloud computing pada PT. Harrisma Global Technologies Jakarta untuk membantu pengguna dalam masalah pengolahan big data, agar user tidak penyimpan data pada komputer yang digunakan. Sehingga data yang tersimpan menjadi terpusat. Hal ini memudahkan bagi pegawai yang membutuhkan data mereka hanya perlu mengakses server cloud yang sudah diterapkan. Metode yang digunakan dalam penelitian ini Network Development Lift Cycle (NDLC) yang terdiri atas 6 tahapan proses analisys, design, simulation/prototyping, implementation, monitoring dan management. Cloud server dibuat menggunakan Owncloud yang sudah diterapkan pada sistem operasi ubuntu 20.04 serta menggunakan xampp sebagai layanan web server dan databasenya. Hasil dari penelitian ini adalah membangun sebuah sistem penyimpanan cloud berbasis internet yang dikelola secara mandiri tanpa layanan pihak ketiga seperti google drive dan One drive yang harus membayar biaya services secara berkala.
Tako vam je bilo nekoć – nakladnički niz dječje književnosti Vinka Vošickoga
Authors: Gregur Marko
Published: February 2021

Koprivnički tiskar Vinko Vošicki u više desetljeća djelovanja istaknuo se objavljivanjem djela Miroslava Krleže i Augusta Cesarca u vrijeme Obznane, ali i pokretanjem nekoliko nakladničkih nizova. Jedan od njih je nakladnički niz dječje književnosti Tako vam je bilo nekoć koji je preuzeo od njemačkih izdavača Dresdner Jugendschriften Verlaga i Verlagshaus Freye. Ukupno je u razdoblju od 1919. do 1946. objavljeno 56 sveščića koji su bili jeftini i prodavali se u više izdanja te utjecali na mnogobrojnu djecu u Hrvatskoj, ali i izvan nje. Iako je tijekom Drugoga svjetskoga rata tiskao materijal za partizane, kasnije je i zbog toga nakladničkoga niza imao problema s komunističkim vlastima, trpio medijske napade i na koncu, nakon što mu je tiskara oduzeta, završio u šezdesetodnevnom zatvoru.
Eradicating Illiteracy in the Rural Masses during the Great War
Authors: Camicia Claudia
Published: February 2021

This study analyses a unique Italian publication linked to a wider project aimed at eradicating the illiteracy of the rural masses. Il Piccolissimo (1917–1919), a magazine written for children in the agricultural area around Rome, informed them about the Great War and educated them about better values and the importance of making savings. This cultural project, conceived and edited by Giovanni Cena and other intellectuals of the time, also envisaged the establishment and management of rural schools and infirmaries to provide children with a better and healthier life. In Italy, during those years, the magazine Il Corriere dei Piccoli was published to entertain and educate children of the middle and upper classes, while Il Piccolissimo sought to develop an awareness of social responsibility in the poor and hardworking children of the countryside. By examining its contents, graphic layout, iconic language, and educational aims we intend to highlight how the type of childhood it targeted acquired unprecedented social visibility in Italy.
Mediterranean Neocomian belemnites, part 5: Valanginian temporal distribution and zonation (and some lithological remarks)
Authors: Janssen Nico M.M.
Published: February 2021

A zonation based on the temporal distribution of belemnites is presented for the Valanginian and its boundaries. It is calibrated on ammonite controlled and bed-by-bed correlated sections from the pre-Vocontian Basin (southeast France). Three new sections are introduced herein that have previously not been investigated. All together, seven zones and six subzones are introduced. In addition, both within the Vocontian area, as well as outside (Bulgaria, Crimea, Czech Republic, France, Hungary, Morocco, Romania, Slovakia, Spain, Switzerland), differences regarding the spatial distribution of belemnites are investigated. Also, in two addenda, some remarks are given regarding lithological oddities.
Habilidades motrices en el medio acuático
Authors: Juárez Santos-García Daniel
Published: February 2021

El desarrollo motor infantil implica la adquisición y desarrollo, entre los dos y los seis años fundamentalmente, de una serie de habilidades denominadas habilidades motrices básicas o movimientos fundamentales. Estas habilidades presentan una serie de características: son comunes a todas las personas, han permitido la supervivencia del ser humano (filogenéticamente hablando), y suponen una base para aprendizajes motrices posteriores (Ruiz, 1994).
A Universal Urbach Rule for Disordered Organic Semiconductors
Authors: Kaiser Christina , Sandberg Oskar , Zarrabi Nasim , Li Wei , Meredith Paul , Armin Ardalan
Published: February 2021

In crystalline semiconductors, the sharpness of the absorption spectrum onset is characterized by temperature-dependent Urbach energies. These energies quantify the static, structural disorder causing localized exponential tail states, and the dynamic disorder due to electron-phonon scattering. The applicability of this exponential-tail model to molecular and amorphous solids has long been debated. Nonetheless, exponential fittings are routinely applied to the analysis of the sub-gap absorption of organic semiconductors alongside Gaussian-like spectral line-shapes predicted by non-adiabatic Marcus theory. Herein, we elucidate the sub-gap spectral line-shapes of organic semiconductors and their blends by temperature-dependent quantum efficiency measurements in photovoltaic structures. We find that the Urbach energy associated with singlet excitons universally equals the thermal energy regardless of static disorder. These observations are consistent with absorption spectra obtained from a convolution of Gaussian density of excitonic states weighted by a Boltzmann factor. A generalized Marcus charge transfer model is presented that explains the absorption spectral line-shape of disordered molecular matrices, and we also provide a simple strategy to determine the excitonic disorder energy. Our findings elaborate the true meaning of the dynamic Urbach energy in molecular solids and deliver a way of relating the photo-physics to static disorder, crucial for optimizing molecular electronic devices such as organic solar cells.
Wolbachia-driven selective sweep in a range expanding insect species
Authors: Deng Junchen , Assandri Giacomo , Chauhan Pallavi , Futahashi Ryo , Galimberti Andrea , Hansson Bengt , Lancaster Lesley , Takahashi Yuma , Svensson Erik I , Duplouy Anne
Published: February 2021

Background Evolutionary processes can cause strong spatial genetic signatures, such as local loss of genetic diversity, or conflicting histories from mitochondrial versus nuclear markers. Investigating these genetic patterns is important, as they may reveal obscured processes and players. The maternally inherited bacterium Wolbachia is among the most widespread symbionts in insects. Wolbachia typically spreads within host species by conferring direct fitness benefits, or by manipulating its host reproduction to favour infected over uninfected females. Under sufficient selective advantage, the mitochondrial haplotype associated with the favoured symbiotic strains will spread (i.e. hitchhike), resulting in low mitochondrial genetic variation across the host species range. The common bluetail damselfly (Ischnura elegans: van der Linden, 1820) has recently emerged as a model organism of the genetics and genomic signatures of range expansion during climate change. Although there is accumulating data on the consequences of such expansion on the genetic of I. elegans, no study has screened for Wolbachia in the damselfly genus Ischnura. Here, we present the biogeographic variation in Wolbachia prevalence and penetrance in 17 I. elegans populations across Europe and Japan, and from close relatives in the Mediterranean area (i.e. I. genei: Rambur, 1842; and I. saharensis: Aguesse, 1958). Results Our data reveal (a) multiple Wolbachia-strains, (b) potential transfer of the symbiont through hybridization, (c) higher infection rates at higher latitudes, and (d) reduced mitochondrial diversity in the north-west populations, indicative of hitchhiking associated with the selective sweep of the most common strain. We found low mitochondrial haplotype diversity in the Wolbachia-infected north-western European populations (Sweden, Scotland, the Netherlands, Belgium, France and Italy) of I. elegans, and, conversely, higher mitochondrial diversity in populations with low penetrance of Wolbachia (Ukraine, Greece, Montenegro and Cyprus). The timing of the selective sweep associated with infected lineages was estimated between 20 000 to 44 000 years before present, which is consistent with the end of the last glacial period about 20 000 ya. Conclusions Our findings provide an example of how endosymbiont infections ca shape spatial variation in their host evolutionary genetics during postglacial expansion. These results also challenge population genetic studies that do not consider the prevalence of symbionts in many insects, which can impact geographic patterns of mitochondrial genetic diversity.
A retrospective comparative study of open reduction and cannulated screw fixation and Kirschner wire fixation in the treatment of fracture of lateral condyle of humerus in children
Authors: LUO XIANYONG , CHEN XINRANG , WANG JIAXIANG
Published: February 2021

Objective To evaluate the clinical efficacy of two surgical methods in the treatment of fracture of lateral condyle of humerus in children and the application value of two kinds of internal fixation materials.Methods A total of 32 children with fracture of lateral condyle of humerus were treated in our hospital from June 2015 to June 2018, with an average age of 5.6 years, including 18 males and 14 females. The patients were divided into two groups: group A (n = 12) and group B (n = 20). By comparing the operation time, removal of internal fixation time, Dhillon elbow function evaluation, HHS elbow function score, X-ray measurement of postoperative carrying angle, Baumann angle and distal humerus anteversion angle, the operation-related complications were recorded in detail.Results The operation time was 0.9 ±0.2 hours in group A, 0.8 ±0.2 hours in group B, P > 0.05. The removal internal fixation time was 91 ±8 days in group A, 59 ±10 days in group B (P < 0.05). The Dhillon elbow function score was 8.2 ±0.6 in group A, 8.0 ±0.8 in group B, and 93 ±5 in group A and 89 ±4 in group B (P > 0.05). The carrying angle was 10 °±1 °in group A and 10 °±2 °in group B (P > 0.05). The Baumann angle was 15 °±4 °in group A and 16 °±3 °in group B (P > 0.05). The anteversion of distal humerus was 33 °±3 °in group A and 33 °±4 °in group B (P > 0.05). In the last follow-up, the excellent and good rate of elbow joint function in group A was excellent in 8 cases and good in 4 cases, and the excellent and good rate in group B was 100%. In group B, 13 cases were excellent, 6 cases were good, and 1 case was moderate, with an excellent and good rate of 95%. The postoperative complications were observed in group A, including avascular necrosis of lateral condyle in 1 case, premature closure of epiphysis in 1 case, skin irritation in 5 cases, needle exudation and incision infection in 2 cases, hyperplasia of lateral condyle in 3 cases, and loss of extension and flexion in 1 case.Conclusions There was no significant difference in operation time, elbow function recovery and imaging measurement between the two surgical methods in the treatment of lateral condylar fracture of humerus. Kirschner wire group had a certain advantage over cannulated cancellus screw group in fracture healing and removal of internal fixation. however, the clinical observation screw group has advantages in postoperative nursing and early exercise.
Correlation between disability measure and Black Hole (T1 hypointense lesion) lesion load in brain Magnetic Resonance Imaging (MRI) of patients with multiple sclerosis (MS): Protocol for a systematic review and meta-analysis
Authors: Valizadeh Amir , Barati Elham , Sahraian Mohammad Ali , Fattahi Mohammad Reza , Moassefi Mana
Published: February 2021

Introduction: As the role of neurodegeneration in the pathophysiology of multiple sclerosis (MS) has become more prominent, the formation and evolution of chronic or persistent T1-hypointense lesions (Black Holes) have been used as markers of axonal loss and neuronal destruction to measure disease activity. However, findings regarding this subject are controversial. In this study we aim to clarify the level of importance of T1 hypointense lesions for estimating the prognosis of patients.Methods: We will search MEDLINE (through PubMed), Embase and Web of Science for relevant studies. We will extract the Spearman's rank correlation coefficient (SRCC) between the T1 hypointense lesion volume and Extended Disability Status Scale (EDSS) in participants. All included studies will be evaluated for the risk of bias. We will also perform a meta-analysis on the data. The risk of publication bias will be evaluated using Funnel plots. Finally, we will assess the confidence in cumulative evidence using an adapted version of GRADE.
Soliton solutions to a (2+1)-dimensional nonlocal NLS equation
Authors: Huang Qiaofeng , Ruan Chenzhi , Huang Jiaxing
Published: February 2021

In this paper, applying the Hirota’s bilinear method and the KP hierarchy reduction method, we obtain the general soliton solutions in the forms of N × N Gram-type determinants to a (2+1)-dimensional non-local nonlinear Schrodinger equation with time reversal under zero and nonzero boundary conditions. The general bright soliton solutions with zero boundary condition are derived via the tau functions of two-component KP hierarchy. Under nonzero boundary condition, we first construct general soliton solutions on periodic back-ground, when N is odd. Furthermore, we discuss typical dynamics of solutions analytically, and graphically.
Diversity and distribution of sulfate-reducing bacteria and its ecological effect in Shimen Realgar Mine
Authors: Zhu Xianbin , Chen Liyuan , Pan Hongzhong , Wang Lei , Zhang Xun , Wang Dan
Published: February 2021

Microbial sulfate reduction, a vital mechanism for microorganisms living in anaerobic, sulfate-rich environments, is an essential aspect of the sulfur biogeochemical cycle. However, there has been no detailed investigation of the diversity and distribution of SRBs and its effect in Shimen Realgar Mine, which is characterized as a hot research area rich in sulfate. To elucidate this issue, soils sample from Shimen Realgar Mine were collected. Further, a total of 55 new or new-type dissimilatory sulfite reductase genes and 5 new families of DrsAB proteins were successfully identified, which demonstrate the rich and unique diversity of the sulfate reducing microbes in this environment. We also isolate a novel DSRP strain, Desulfotomaculum sp. JL90 from the soils, which can efficiently respiratory reduces sulfate and arsenate. JL90 also can promote the generation of yellow precipitations in the presence of multiple electron acceptors (both contain sulfate and As(V) in the cultures). Moreover, microbial community compositions also indicated the biogenesis contribution of SRBs to the Shimen realgar mine. The results of this study provided a new insight into the diversity and distribution of SRBs and its ecological effect in Shimen Realgar Mine.
Nanobiotechnology: advances in the use of nanomaterials to increase CO2 biofixation by microalgae
Authors: Morais Michele Greque , Vargas Bruna Pereira , Vaz Bruna Silva , Cardias Bruna Barcelos , Costa Jorge Alberto Vieira
Published: February 2021

Microalgae through photosynthesis can convert atmospheric CO2 into biomass to produce biofuels and high value-added bioproducts. the improvement of the cultivation systems helps in the conversion of gases into biomass and, consequently, increase microalgal productivity. Recently, studies involving the technology of physical adsorption with nanomaterials have shown promising results in increasing the CO2 biofixation by microalgae. Polymeric nanoparticles produced by the electrospraying technique stand out as potential adsorbent materials for CO2 capture due to the high surface area per unit volume formed by many active sites that increase the gas adsorption capacity in a liquid medium. The interactions between plant cells and nanomaterials have been revealed the potential of nanobiotechnology to reduce environmental pollution and contribute to sustainability. Moreover, the development of these methodologies can contribute to the viability of large-scale microalgae cultivations for CO2 mitigation. Based on this, the objective of this review is to address the advances of nanobiotechnology to increase CO2 biofixation by microalgae. The potential of adsorbent nanoparticles developed by the electrospraying technique and the key points for applying it for this purpose are also discussed.
Anticholinergic drugs and forebrain MRI changes in cognitively normal and mildly impaired people
Authors: Meng Dewen , Mohammadi-Nejad Ali-Reza , Sotiropoulos Stamatios N. , Auer Dorothee P.
Published: February 2021

Background

Anticholinergic (AC) medication use is associated with cognitive decline and dementia, which may be related to an AC induced central hypocholinergic state, but the exact mechanisms remain to be understood. We aimed to further elucidate the putative link between AC drug prescription, cognition and structural and functional impairment of the forebrain cholinergic nucleus basalis of Meynert (NBM).
Methods

Cognitively normal (CN, n = 344) and mild cognitively impaired (MCI, n = 224) ADNI-3 participants who had undergone 3T-MRI were included. Structural (regional grey matter [GM] density) and functional NBM integrity (functional connectivity [FC]) were compared between those on anticholinergic medication for over one year (AC+) and those without (AC−) in each condition. AC burden was classes as mild, moderate or severe.
Results
31% of participants were AC+ (≥ 1 mild AC drug) demonstrating lower NBM-GM density in CN (CNAC−: 0.6 ± 0.03; CNAC+: 0.6 ± 0.02; P < 0.001), and MCI subgroups (MCIAC−: 0.6 ± 0.03; MCIAC+: 0.6 ± 0.03; P < 0.001), but with a larger effect size in MCI. NBM-FC was lower in CNAC+ vs. CNAC− (3.6 ± 0.5 vs. 3.9 ± 0.6; P = 0.001), and in MCI (MCIAC+ 3.3 ± 0.2 vs. vs. MCIAC− 3.7 ± 0.5; P < 0.001) again with larger effect size in MCI. NBM-FC partially mediated the association between AC medication burden and cognition.
Conclusions

Our findings provide novel support for a detrimental effect of mild AC medication on the forebrain cholinergic system characterised as functional central hypocholinergic that partially mediated AC-related cognitive impairment. Moreover, structural tissue damage suggests neurodegeneration, and larger effect sizes in MCI point to enhanced susceptibility for AC medication in those at risk of dementia.
Exploring the Electronic, Optical, and Bioactive Properties for New Modified Fullerenes via Molecular Modeling
Authors: El-Mansy Mohamed A.M. , Bayoumy Ahmed M. , Elhaes Hanan , IBRAHIM Medhat
Published: February 2021

Pristine fullerene characters are highly influenced upon surface decoration by COOH, NH2, and Li sets. The electronic, vibrational, and optical properties of pristine and modified fullerenes are well tested using DFT. QSAR descriptors are fulfilled via PM6 interface for proposed fullerenes. Results showed that C60-2Li may compete recent kesterite Cu2ZnGeSe4 solar cell which have band gap range as 1.5∼1.7 eV and efficiency > 14%. The C60-2Li may represent a new row of highly efficient fabricated solar cells. MESP contours found that additive Li possesses a blue shift in Fullerene electronegative behavior towards electrophilic additions whereas additive COOH and NH2 maintain the original nucleophilic additions. Based upon QSAR values, C60-2NH2 is acknowledged as potential bioactive substrate for drug delivery. This paves the way towed multidisciplinary application of the studied fullerene system.
Two Faces of Arbutine in Hepatocelluler Carcinoma (HepG2) Cells: Anticarcinogenic Effect in LD50 Dose and Protective Effect Against Cisplatin Toxication Through its Antioxidant and Anti-inflammatory Activity in LD0 Dose  
Authors: Hazman Ömer , Evin Hatice , Bozkurt Mehmet Fatih , Ciğerci İbrahim Hakkı
Published: February 2021

Arbutine is one of the active substances used as a skin whitening agent in cosmetic products. Possible effects of arbutine on hepatocelluler carcinoma (HepG2) cells and cisplatin toxication in HepG2 cells were investigated in this study. Cytotoxicity, genotoxicity, oxidative stress, inflammation, apoptosis and proliferation levels were determined in experimental groups established for the purpose above. It was determined that when low dose of α-arbutine (in LD0 dose) was administered to HepG2 cells alone, it had no genotoxic and cytotoxic effects and no effects on inflammation, apoptosis and proliferation. However, when low dose of arbutine was used with cisplatin, it was observed that oxidative stress, inflammation, and genotoxicity levels increased as a result of cisplatin toxicity, but caspase 3 levels were not affected by this situation. As a result of high dose (in LD50 dose) of α-arbutine administration to HepG2 cells, it was determined that it would have anticarcinogenic effects by increasing oxidative stress, genotoxicity, inflammation and apoptosis and by suppressing proliferation. In the presented study it was determined that as well as α-arbutine had an anticarcinogenic effect on HepG2 cells in high doses, it might be protective to reduce the side effects caused by low dose (LD0 dose) of cisplatin treatment. In addition, it was concluded that α/β-arbutine-including cosmetic products were safe for cancer patients because α/β-arbutine had no effect on proliferation in HepG2 cells. In order to present the activity of arbutine isoforms more clearly it is recommended that studies should be conducted using healthy and different cell lines.