bluuebunny/crossref_metadata_2025 huggingface dataset:
Sistem Diagnosa Hama Dan Penyakit Pada Tanaman Wortel Menggunakan Metode Certainty Factor
Authors: Telaumbanua Imelda , Panggabean Erwin , Gea Asaziduhu
Published: October 2019

Abstrak

 

Komputer saat ini merupakan perangkat yang sudah menjangkau hampir sebagian besar masyarakat. Kemajuan teknologi dalam bidang komputer telah menjadikan komputer sebagai alat bantu untuk memudahkan pekerjaan manusia dalam berbagai aspek. Salah satu contohnya menghasilkan suatu pendekatan utntuk dapat mengetahui jenis penyakit yang terserag pada tanaman dengan menggunakan metode Certainty Factor. Sistem ini, dapat membantu seseorang untuk mengetahui penyakit yang terserang berdasarkan gejala yang ada pada tanaman serta memberikan solusi untuk penaggulangan atau membasmi penyakit serta hama yang terdapat pada tanaman wortel dengan metode certainty Factor.Dalam  upaya pengendalian hama dan penyakit tanaman wortel secara strategis, seseorang pakar dibutuhkan  untuk bertindak sebagai media bantu, mengingat terbatasnya pengetahuan para praktisi petani wortel dalam mengetahui penyakit pada tanaman serta memberikan solusi kepada petani untuk membasmi penyakit yang terserang pada tanaman wortel.Sistem pakar tanaman memiliki tujuan mengetahui jenis hama dan penyakit, gejala, penyebab, pencegahan, dan menyediakan alternatif solusi penanggulangan hama dan penyakit pada setiap tanaman. Sistem pakar ini juga akan dapat membantu untuk mendukung aktivitas dalam pemecahan masalah.

 

Kata Kunci: Sistem Pakar, Wortel, Hama dan Penyakit, Certainty Factor, Web

 

 

Abstract

 

Computer current’s is device that has reach almost large part comumunity. Progress technology in subject computer has make computer as tool help for facilitate job human in various aspect. Either for example produce disease that stricken at plant with use method certinty factor. System’s, can help someone for know disease that stircken based on symptom that is at plant and give solution fo handling or eradicate disease and pest that there are at plant carrot with use method certainty factor. In effort pest control and plant disease carrot strategically, someone expert needed for act as media help, remember lomited knowedge some practitioner farmer carrot in know disease at plant and give solution to farmer to exterminate disease that stircken at plant carrot. Expert system plant have purpose know type pest and disease, symptom, cause, prevention and provide alternative solution handling pest and disease at every plant. Expert su=ystem this will can help for support activity in prevention problem.

 

Keywords: Expert System, Carrot, Pest and Disease, Certainty Factor, Web
SPK Peneriman Beasiswa S3 Di STMIK Pelita Nusantara Dengan Metode Topsis
Authors: Hutagaol Erlinda , Marbun Murni , Gea Asaziduhu
Published: October 2019

Abstrak

 

Penelitian ini adalah sistem pendukung keputusan penentuan penerima beasiswa S3 di STMIK Pelita Nusantara dengan metode TOPSIS. MetodeTOPSIS digunakan untuk penentuan penerima beasiswa S3 yang di tentukan berdasarkan kriteria.Sistem pendukung keputusan ini dibangun dengan aplikasi Visual Studio 2010 sebagai alat bantu untukpenentuan penerima beasiswa S3 di STMIK Pelita Nusantara dan menggunakan MYSQL sebagai database.Hasil dari sistem pendukung keputusan ini adalahuntuk menghasilkan sistem pendukung keputusan yang objektif dan sistematis dalam penentuan penerima beasiswa S3dengan kualifikasi terbaik.Sistem ini bertujuan untuk membantu pihak yayasan dalam memilih dosen yang layak mendapatkan beasiswa S3 di STMIK Pelita Nusantara.

 

Kata kunci: Sistem Pendukung Keputusan, Metode TOPSIS, Beasiswa

 

Abstract

 

This research is a decision support system for determining S3 scholarship recipients at STMIK Pelita Nusantara with TOPSIS method. The TOPSIS method is used for determining S3 scholarship recipients that are determined based on criteria. This decision support system was built with Visual Studio 2010 application as a tool for determining S3 scholarship recipients at STMIK Pelita Nusantara and using MYSQL as a database. The result of this decision support system is to produce an objective and systematic decision support system in determining the S3 scholarship recipients with the best qualifications. This system aims to help the foundation in selecting lecturers who are eligible to get a S3 scholarship at STMIK Pelita Nusantara.

 

Keywords:Decision Support System, TOPSIS Method, Scholarship
Metode Penentuan Shift Pegawai Pada RS.Bhayangkara Tk.II Medan Dengan Simple Additive Weighting
Authors: Pasaribu Desi Hotnida , Gea Asaziduhu
Published: October 2019

ABSTRAK

 

Penelitian ini adalah Sistem Pendukung Keputusan penentuan Shift pegawai dengan menggunakan metode Simple Additive Weighting(SAW) proses dari metode SAW yaitu mencari penjumlahan terbobot dari rating kinerja pada setiap alternatif pada semua kriteria, membuat  tabel rating kecocokan dari setiap alternatif pada setiap kriteria yang telah ditentukkan dan membuat sebuah matriks keputusan. Aplikasi yang dibangun merupakan aplikasi berbasis web dengan menggunakan bahasa pemrograman PHP dan menggunakan database MySQL. Tujuan dari penelitian ini adalah untuk menyelesaiakan permasalahan Shift Pegawai secara terkomputerasi, Dengan adanya sistem ini maka RS. Bhayangkara Tk. II Medan dapat memberikan informasi yang cepat dan akurat.

Kata Kunci : SPK,SAW, PHP, MYSQL

 

ABSTRACT

 

This study is a Decision Support System for determining employee shifts using the Simple Additive Weighting (SAW) method of the SAW method, which is looking for a weighted sum of performance ratings on each alternative on all criteria, making a suitability rating table for each alternative on each specified criteria and make a decision matrix. The application that is built is a web-based application using the PHP programming language and using a MySQL database. The purpose of this study is to solve the problem of Employee Shift computerized, with the existence of this system the Hospital. Bhayangkara Kindergarten. II Medan can provide fast and accurate information.

Keywords: SPK, SAW, PHP, MYSQL
PENERAPAN METODE CERTAINTY FACTOR DALAM MENDIAGNOSA PENYAKIT CACAR PADA KULIT MANUSIA
Authors: Ndruru Eferoni
Published: October 2019

Expert system is a method used to implement human science to computer systems with the aim of solving a problem in the field of knowledge. Allergic disease is an overreaction from the body to certain particles from outside that enter the body which makes people feel uncomfortable and disturbed, allergies can occur with a variety of symptoms, some have experienced mild symptoms such as itchy eyes, sneezing, or reddened skin, and some are suffering from allergies with severe asthma. Factors from the causes of this allergy are very much encountered such as through the respiratory tract, through food, through drugs and so forth. Medical experts can use the application that has been built, which aims to make it easier to diagnose allergic diseases of the skin by only paying attention to the symptoms experienced. By using the Certainty Factor (CF) method, we get the value of a person's likelihood of developing allergic disease or not. The Certainty Factor (CF) method is very beneficial for the allergic skin disease system.

Keywords: 3-5 Expert Systems, Skinpox, Certainty Factor.
ANALISA KINERJA PEGAWAI UNIVERSITAS METHODIST INDONESIA MENGGUNAKAN FUZZY MULTI ATRIBUT DECISION
Authors: Gea Asaziduhu
Published: October 2019

Implementation of performance appraisals needs to be carried out by each organization or agency involving management. In this case the Indonesian Methodist University has Human Resources who carry out their duties in serving service activities with the aim of being able to manage and serve effectively and efficiently. In the role of decision support systems in the context of the overall information system is intended to improve performance through the application of information technology and determine the approach used in the decision making process, to evaluate interactive selection. This software was built using the Fuzzy model with the Multi Attribute Decision Making method. This software provides an assessment based on Job Execution Assessment (DP3), namely loyalty, work performance, responsibility, obedience, honesty, cooperation, initiative and leadership so that the results can be used as decision support for promotion. The importance of the assessment for work requires that the assessment must be truly objective, namely measuring the performance of employees at the true Methodist University of Indonesia ,. This means that the implementation of the assessment must reflect the actual implementation of work and evaluate employee behavior that reflects the success of the implementation of work that results in the satisfaction of people who receive services.

Keywords: Decision Support, Fuzzy, Multi Attribute Decision Making, Employee Performance
Aplikasi Absensi Berbasis Android Menggunakan Differensi Fitur Biometrika Wajah
Authors: Siregar Rosyidah , Lubis Yessi Fitri Annisah , Syahputri Nenna Irsa
Published: October 2019

Technological developments have changed the way of works in a variety of human activities that were originally manual to digital where data and information can be processed anytime and anywhere. The development of mobile devices which is characterized by the increasing number of users of smart devices or smartphones has now made it possible to do a variety of jobs thanks to its quite high computing capability. Digital attendance is currently being developed on computer-based devices using authentication using fingerprint. This can cause a long queue if applied to an institution or company with a large number of employees and tight working hours. Digital attendance using smartphone devices especially Android has now begun to be developed to utilize smartphone devices as an alternative to recording employee attendance. The problem of digital attendance on smartphone devices especially Android is the fingerprint authentication facility is only available on devices with prices that are still relatively expensive, making it difficult to reach by employees, so cheap authentication that can be used today is using facial features. This study uses facial biometrics features to validate and authenticate the identity of the face owner using simple feature differentiation values so as to minimize the complexity of the authentication process while maintaining the accuracy of the authentication results. With a threshold difference of 30 - 50% the system built can detect the owner's face accurately with different lighting and positions.

Keywords : Application, Attendance, Biometrics, Face.
Peran Perguruan Tinggi dalam Pengembangan Kepedulian Sosial Mahasiswa
Authors: Harry Anwar R. Anggoro Rahardjo
Published: October 2019

Perguruan    tinggi    merasa    perlu    memperbaiki    sistem    pe ndidikan    dengan  memasukkan   kegiatan   pendidikan   karakter,   terutama   k arakter   peduli   sosial   dalam  pelaksanaan  kegiatan  bidang  pengabdian  masyarakat  y ang  mengajarkan  kebiasaan  cara  berpikir   dan   berperilaku   sehingga   mereka   mampu   hidu p   dan   bekerjasama   dengan  keluarga,  masyarakat,  bangsa  dan  negara,  serta  memb antu  mereka  dalam  membuat  keputusan  yang  tepat.  Tujuan  dilakukannya  penelitia n  ini  yaitu:  1)  untuk  mengetahui  pengembangan  kepedulian  sosial  melalui  pendidikan  k arakter  pada  Bidang  Pengabdian  Masyarakat  yang  dilakukan  oleh  Universitas  Langlang buana,  dan  2)  untuk  menemukan  upaya pengembangan kepedulian sosial di Universitas  Langlangbuana Bandung.  Metode  penelitian  yang  digunakan  termasuk  pada  pene litian  kualitatif,  dengan  desain  deskriptif  analitis  dan  pendekatan  fenomenol ogi.  Informan  penelitian  ini  adalah  ketua  lembaga  pengabdian  pengabdian  masyarakat,  uns ur-unsur  pendukung  pendidikan,  BEM (Badan Eksekutif Mahasiswa), dan DPM (Dewan Per wakilan Mahasiswa). Teknik  pengumpulan data menggunakan metode wawancara menda lam, observasi, dokumentasi.  Observasi tak berstruktur yang berkembang selama pe nelitian berupa field note.   Hasil  penelitian  ditemukan  bahwa  pengembangan  keped ulian  sosial  melalui  pendidikan   karakter   pada   Bidang   Pengabdian   Masyarak at   yang   dilakukan   oleh  Universitas  Langlangbuana  melalui  kegiatan  kemahasi swaan  dengan  menggunakan  cara  pembiasaan dan keteladanan. Cara pembiasaan dilaksa nakan dengan menciptakan budaya  peduli    di    lingkungan    Universitas    Langlangbuana    deng an    selalu    mendorong  mahasiswanya   untuk   terlibat   aktif   dalam   setiap   kegi atan   bidang   pemberdayaan  masyarakat   yang   diselenggarakan   universitas.   Peran  dosen   sebagai   teladan   bagi  mahasiswa,  maka  oleh  Universitas  Langlangbuana  mene mpatkan  dosen  yang  memiliki  karakter sebagai tenaga pelaksana  dalam membimbing,   menuntun dan mengawasi  setiap  kegiatan   yang   dilakukan.   Upaya   pengembangan   kepedul ian   sosial   di   Universitas  Langlangbuana  Bandung  dilakukan  dengan:  1)  Menentuk an  dosen  yang  berkarakter,  2)  Universitas  mendukung  penuh  setiap  kegiatan  berkait an  dengan  bidang  pengabdian  masyarakat,   baik   dalam   pembiayaan   maupun   pengadaan  sarana   dan   prasarana  pendukung, 3) Peningkatan kerjasama dengan instansi -instansi terkait dengan kegiatan di  bidang pengabdian masyarakat, dan 4) Lembaga, insti tusi, dosen dan mahasiswa
Pengaruh Penjadwalan Produksi dan Tata Letak Terhadap Kelancaran Proses Produksi di PT. Sinar Mulia Megah Abadi
Authors: Aji Nurjaman , Haryadi Dudi
Published: October 2019

Tujuan   dari   penelitian   ini   adalah   untuk   memperoleh  data   dan   informasi   tentang  penjadwalan  produksi  dan  tataletak  terhadap  kelanca ran  proses  produksi  sehingga  dapat  dilihat pengaruh penjadwalan produksi dan tata leta k terhadap kelancaran proses produksi  di  PT.  Sinar  Mulia  Megah  Abadi.  Metode  yang  digunak an  dalam  penelitian  ini  adalah  metode  deskriptif  dan  metode  verifikatif.  Variabel  bebas  adalah  penjadwalan  produksi  dan  tata  letak  sedangkan  variabel  terikat  adalah  ke lancaran  proses  produksi.  Teknik  pengumpulan  data  menggunakan  data  sampel  perusahaan   dari  tahun  2014  sampai  tahun  2016,  wawancara  dan  studi  kepustakaan.  Metode  anali sis  menggunakan  analisis  jalur  ( Path  Analysis ),  analisis  korelasi,  Uji  f,  danUji  t.  Dengan  mengg unakan  program  SPSS  Versi  21.  Hasil  analisis  jalur  menyimpulkan  bahwa  p enjadwalan  produksi  dan  tata  letak  berpengaruh   terhadap   kelancaran   proses   produksi.   Be sarnya   pengaruh   penjadwalan  produksi  dan  tata  letak  terhadap  kelancaran  proses  produksi  secara  simultan  adalah  penjadwalan  produksi  dan  tataletak  berpengaruh  seca ra  signifikan  terhadap  kelancaran  proses produksi.
Analisis Perbandingan Profitabilitas Sebelum dan Sesudah Menggunakan Teknologi Informasi
Authors: Sukmono Chiesa Utomo , Hendratno ,
Published: October 2019

Kemajuan teknologi mendorong segala sektor bisnis d i Indonesia untuk terus berinovasi salah satunya adalah sektor bisnis ritel. Munculnya bisnis–bisnis ritel baru ( startup ) yang berbasiskan teknologi informasi dapat menjadi suatu ancaman bagi perusahaan ritel konvensional seperti PT. Mitra Adiperkasa, Tbk atau yang biasa disebut dengan disruption. Hal tersebut menjadi dorongan bagi perusahaan untuk mengembangkan sektor bisnisnya. Teknologi informasi yang digunakan perus ahaan adalah e-commerce. Perusahaan meluncurkan situs penjualan online bernama MAP EMALL pada awal tahun 2016 dan pada pertengahan tahun yang sama perusahaa n sudah mendapatkan manfaat positif yaitu terjadinya peningkatan laba. Peneliti an ini bertujuan untuk mengetahui seberapa signifikan perbedaan profitabilitas yang d itimbulkan oleh penerapan teknologi informasi. Berdasarkan peningkatan laba, penelitian ini dikaitkan dengan rasio profitabilitas perusahaan yang diantara nya adalah NPM, ROI, dan ROE. Data yang digunakan pada penelitian ini adalah laporan keuang an dari tahun 2014 hingga tahun 2017. Periode Maret 2016 ditetapkan sebagai periode pisah batas karena pada periode tersebut perusahaan mulai menerapkan teknologi info rmasi. Pengujian data yang dilakukan pada penelitian ini adalah uji hipotesis komparatif. Hasil penelitian menunjukkan bahwa terjadi peningkatan profitabilita s setelah penerapan teknologi informasi dilihat dari ketiga aspek yaitu NPM, ROI, dan ROE. Perusahaan mendapatkan manfaat positif dari penerapan teknologi informasi. Tetapi, dilihat dari hasil uji beda perbedaan profitabilitas sebelum dan sesudah penera pan teknologi informasi dinilai kurang signifikan.
O Górgias de Platão e a ameaça do poder persuasivo na pólis
Authors: Castro Hedgar Lopes
Published: October 2019

A retórica é uma questão central no Górgias de Platão. Por meio da discussão com três de seus praticantes, Sócrates visa definir o objeto da retórica, qual a sua relação com a justiça e com a felicidade dos cidadãos da pólis. A partir do diálogo entre Sócrates e os três oradores, que sempre partem da dóxa para falar ou discursar, intento evidenciar como essa instância relaciona intrinsecamente os cidadãos e os oradores, tanto na vida na pólis como no governo político. Os exames socráticos das afirmações e crenças retóricas, contidos ao longo do Górgias, são úteis para apresentar o rumo de seus discursos e como eles não se comprometem com a Justiça e com o Bem na vida política e ética da pólis. Esse compromisso, estando ausente, deflagra a ameaçadora relação entre oradores e cidadãos.
Da vontade geral como poder de fato e poder de direito: do exercício da soberania popular entre a unidade multíplice da sociedade (unitas ordinis) e a totalidade político-jurídica e econômico-social do estado
Authors: Da Rosa Luiz Carlos Mariano
Published: October 2019

Baseada na teoria de Rousseau, a pesquisa assinala que, consistindo na condição sine qua non para o exercício da soberania popular em uma construção que converge para as fronteiras que encerram a Constituição e o Estado, a Vontade Geral envolve a possibilidade de articulação da totalidade dos homens enquanto indivíduos em sua concreticidade histórico-cultural e econômico-social, o que implica a universalidade concreta, que advém do conjunto de vontades e fato econômico que caracteriza a sociedade e a dinâmica das relações intersubjetivas. Dessa forma, fundamentado em uma pesquisa bibliográfica, o artigo dialoga com a perspectiva da teoria institucional de Castoriadis, Lapassade e Lourau, defendendo que, caracterizando-se como um processo ético-jurídico de deliberação coletiva que implica a objetivação dos valores, necessidades e fins do povo enquanto corpo coletivo e moral através de um movimento econômico-político que envolve os momentos que encerram o instituído, o instituinte e a institucionalização, a Vontade Geral converte o conteúdo político-social em poder de direito. Portanto, convergindo para a superação da universalidade de um Direito que encerra um “dever-ser” e uma exterioridade coercitiva que se impõe em nome do bem comum da totalidade político-jurídica e econômico-social do Estado, a pesquisa mostra que a Vontade Geral se sobrepõe à ruptura que, envolvendo a ordem jurídica e a ordem social, caracteriza a instituição estatal sob a égide do liberalismo, possibilitando a instauração da democracia participativa.
الاحتراق النفسي وعلاقته بالرضا الوظيفي لدي معلمي مرحلة التعليم الثانوي
Authors: النعاس عمر مصطفي , منصور هاجر محمد
Published: October 2019

هدف هذا البحث إلي: التعرف علي العلاقة بين الاحتراق النفسي والرضا الوظيفي لدى معلمي مرحلة التعليم الثانوي بمدينة مصراتة، في ضوء متغيرات الجنس، والخبرة التدريسية، وقد استخدم الباحثان المنهج الوصفي الارتباطي، وقد تم تطبيق البحث علي عينة تضم (93) معلمًا ومعلمة من مرحلة التعليم الثانوي بمدينة مصراتة، وبنسبة (7 %) من مجتمع البحث الأصلي، والبالغ عددهم ( 1369) معلمًا ومعلمة، وقد توصلت نتائج هذا البحث إلي: وجود علاقة إيجابية ودالة عند مستوي دلالة (0.05) بين البعد الخاص بالمعلم، والإدارة، والإجهاد الانفعالي، وتبلد المشاعر، ونقص الشعور، ووجود علاقة دالة بين الإشراف التربوي، وتبلد المشاعر، ووجود علاقة دالة بين الحوافز والرواتب، والإجهاد الانفعالي، وكذالك وجود علاقة ارتباطيه دالة بين تبلد المشاعر ونقص الشعور، وعدم وجود علاقة ارتباطيه بين تقييم المعلم لمهنته في جميع أبعاد الاحتراق النفسي. كما توصل البحث إلى وجود فروق ذات دلاله إحصائية عند مستوي (0.05) بين الذكور والإناث لصالح الإناث فيما يتعلق بالحوافز والرواتب، والبيئة المدرسية، والبعد الاجتماعي، وتقييم المعلم لمهنته بينما لا توجد فروق في المعلم والإدارة، والإشراف التربوي. وكذلك عدم وجود فروق ذات دلاله إحصائية عند مستوي ( 0.05 )، فيما يتعلق بالإشراف التربوي، و الحوافز والرواتب، البيئة المدرسية، والبعد الاجتماعي، وتقييم المعلم لمهنته تبعا لسنوات الخبرة، بينما توجد فروق دالة في المعلم، والإدارة وكانت الفروق لصالح المجوعة الثانية أي مدة الخبرة من (5 ـ 10 سنوات). وفي ضوء نتائج البحث أوصي الباحثان ببعض التوصيات منها: التأكد من مناسبة أعباء العمل والمهام الموكلة للمعلمين علي مستوي الجنسين لتجنب شعورهم بالعجز والنقص؛ كما اقترحا إجراء بحوث ودراسات في الاحتراق النفسي وعلاقته بالرضا الوظيفي لدي معلمي مرحلة التعليم الاساسى.
KELIO TRASOS HORIZONTALIŲJŲ KREIVIŲ ĮTAKA TRANSPORTO SRAUTO GREIČIUI / INFLUENCE OF ROAD ALIGNMENT HORIZONTAL CURVE ON TRANSPORT FLOW OPERATING SPEED
Authors: Šeporaitis Mindaugas , Vorobjovas Viktoras
Published: October 2019

Geometric parameters of road alignment are fundamental elements defining permissible speed and vice versa. Unlike permissible speed, determined operating speed in upgrade projects has a significant impact on the safe movement of transport on the roads. The article reviews the composition of the regional road network in Lithuania, the design speed, the permitted speed, the practical problems of applying the geometry parameters of the road alignment according to the legal documents valid in Lithuania, methods of horizontal curve selection in Lithuania and other countries are analysed in more detail. Comparative initial calculations of horizontal curves were performed using different side friction coefficients. Review summary of analysis conducted and statements are prepared for discussion.
The Distribution of Dense Cores near H ii Regions
Authors: Bobotsis George , Fich Michel
Published: October 2019

An investigation of dust emission associated with a large sample of H ii regions has been carried out. Stacked results from this sample suggest that each H ii region is at or near the center of a cluster of dense cores that extends far beyond the H ii region, and has a volume density that decreases as r
−3. The data also show evidence for enhanced numbers of cores near the boundary of the H ii regions. At the same time, a significant decrease in the number of cores, consistent with no cores, is observed in the interior of these H ii regions. Neither these H ii regions nor their associated massive OB stars were found to have a significant heating effect on their associated dusty clumps. “Clouds,” or the outermost layers of the clumps in which the cores are embedded, are found to exert a strong shielding effect against external heating sources. Despite this, a large portion of the identified cores were found to be warmer than their surrounding clouds and consequently may be in the initial stages of star formation. The star-formation efficiency of the 7 H ii region systems with the most reliable mass budgets ranged between 1% and 9%.
PRIMUS: Clustering of Star-forming and Quiescent Central Galaxies at 0.2 < z < 0.9
Authors: Berti Angela M. , Coil Alison L. , Hearin Andrew P. , Moustakas John
Published: October 2019

Previous work has demonstrated that at a given stellar mass, quiescent galaxies are more strongly clustered than star-forming galaxies. The contribution to this signal from central, as opposed to satellite, galaxies is not known, which has strong implications for galaxy evolution models. To investigate the contribution from central galaxies, here we present measurements of the clustering of isolated primary (IP) galaxies, used as a proxy for central galaxies, at 0.2 < z < 0.9 with data from the PRIsm MUlti-Object Survey (PRIMUS) galaxy redshift survey. Using a sample of spectroscopic redshifts for ∼60,000 galaxies with

covering 5 deg2 on the sky, we define IP galaxies using isolation cuts in spatial proximity and stellar mass of nearby galaxies. We find that at a fixed stellar mass, quiescent IP galaxies are more strongly clustered than star-forming IP galaxies at z ∼ 0.35 (10σ). Using mock galaxy catalogs based on the recent halo occupation models of Behroozi et al. and designed to replicate the parameters of the PRIMUS survey data set, we find that these clustering differences are due in part to quiescent central galaxies being more strongly clustered than star-forming central galaxies. This is consistent with either distinct stellar-to-halo mass relations for quiescent and star-forming central galaxies, and/or central galaxy assembly bias. We additionally use mock catalogs to assess the dependence of both incompleteness and satellite galaxy contamination in the IP galaxy samples on redshift, galaxy type, and stellar mass, and demonstrate how isolation criteria yield biased subsamples of central galaxies via environmental incompleteness, or the preferential exclusion of central galaxies in overdense environments.
Damping Mechanisms of the Solar Filament Longitudinal Oscillations in the Weak Magnetic Field
Authors: Zhang 张蠡 L. Y. 岳 , Fang 方 C. 成 , Chen 陈鹏 P. F. 飞
Published: October 2019

Longitudinal oscillations of the solar filament have been investigated via numerical simulations continuously, but mainly in one dimension, where the magnetic field line is treated as a rigid flux tube. Whereas those one-dimensional (1D) simulations can roughly reproduce the observed oscillation periods, implying that gravity is the main restoring force for filament longitudinal oscillations, the decay time in 1D simulations is generally longer than in observations. In this paper, we perform a two-dimensional (2D) nonadiabatic magnetohydrodynamic simulation of filament longitudinal oscillations, and compare it with the 2D adiabatic case and 1D adiabatic and nonadiabatic cases. It is found that, whereas both nonadiabatic processes (radiation and heat conduction) can significantly reduce the decay time, wave leakage is another important mechanism to dissipate the kinetic energy of the oscillating filament when the magnetic field is weak so that gravity is comparable to Lorentz force. In this case, our simulations indicate that the pendulum model might lead to an error of ∼100% in determining the curvature radius of the dipped magnetic field using the longitudinal oscillation period when the gravity to Lorentz force ratio is close to unity.
Discovery of the Galactic High-mass Gamma-Ray Binary 4FGL J1405.1−6119
Authors: Corbet R. H. D. , Chomiuk L. , Coe M. J. , Coley J. B. , Dubus G. , Edwards P. G. , Martin P. , McBride V. A. , Stevens J. , Strader J. , Townsend L. J.
Published: October 2019

We report the identification from multiwavelength observations of the Fermi Large Area Telescope (LAT) source 4FGL J1405.1−6119 (=3FGL J1405.4−6119) as a high-mass gamma-ray binary. Observations with the LAT show that gamma-ray emission from the system is modulated at a period of 13.7135 ± 0.0019 days, with the presence of two maxima per orbit with different spectral properties. X-ray observations using the Neil Gehrels Swift Observatory X-ray Telescope show that X-ray emission is also modulated at this period, but with a single maximum that is closer to the secondary lower-energy gamma-ray maximum. A radio source, coincident with the X-ray source is also found from Australia Telescope Compact Array observations, and the radio emission is modulated on the gamma-ray period with similar phasing to the X-ray emission. A large degree of interstellar obscuration severely hampers optical observations, but a near-infrared counterpart is found. Near-infrared spectroscopy indicates an O6 III spectral classification. This is the third gamma-ray binary to be discovered with the Fermi-LAT from periodic modulation of the gamma-ray emission, the other two sources also have early O star, rather than Be star, counterparts. We consider at what distances we can detect such modulated gamma-ray emission with the LAT, and examine constraints on the gamma-ray binary population of the Milky Way.
Evidence of AGN Activity in the Gamma-Ray Emission from Two Starburst Galaxies
Authors: Peng 彭 Fang-Kun 方坤 , Zhang Hai-Ming , Wang Xiang-Yu , Wang Jun-Feng , Zhi Qi-Jun
Published: October 2019

Starburst galaxies are huge reservoirs of cosmic rays (CRs) and these CRs convert a significant fraction of their energy into gamma-rays by colliding with the interstellar medium (ISM). The produced GeV gamma-ray emission is temporally stable, and the flux is found to correlate well with indicators of star formation rates, such as the total infrared (IR) luminosity L
IR and monochromatic radio continuum luminosity at 1.4 GHz

, i.e., following L

γ
 − L
IR and

relations. Recently, gamma-ray excesses have been reported to be spatially coincident with two starburst galaxies, NGC 3424 and UGC 11041, in the fourth Fermi Large Area Telescope (LAT) source catalog (4FGL). Different from other starburst galaxies detected by Fermi-LAT, we find that the gamma-ray emission associated with NGC 3424 and UGC 11041 shows significant flux variability. With relatively weak infrared and radio emission, NGC 3424 and UGC 11041 appear as outliers of the L

γ
 − L
IR and

relations of starburst galaxies. These results suggest that NGC 3424 and UGC 11041 may harbor obscured active galactic nuclei (AGNs) and the AGN activities provide the dominant contribution to the gamma-ray emission as compared to that provided by the starburst activities.
Characteristics of a Gradual Filament Eruption and Subsequent CME Propagation in Relation to a Strong Geomagnetic Storm
Authors: Chen Chong , Liu Ying D. , Wang Rui , Zhao Xiaowei , Hu Huidong , Zhu Bei
Published: October 2019

An unexpected strong geomagnetic storm occurred on 2018 August 26, which was caused by a slow coronal mass ejection (CME) from a gradual eruption of a large quiet-region filament. We investigate the eruption and propagation characteristics of this CME in relation to the strong geomagnetic storm with remote sensing and in situ observations. Coronal magnetic fields around the filament are extrapolated and compared with extreme ultraviolet observations. We determine the propagation direction and tilt angle of the CME flux rope near the Sun using a graduated cylindrical shell (GCS) model and the Sun-to-Earth kinematics of the CME with wide-angle imaging observations from STEREO A. We reconstruct the flux-rope structure using a Grad–Shafranov technique based on the in situ measurements at the Earth and compare it with those from solar observations and the GCS results. Our conclusions are as follows: (1) the eruption of the filament was unusually slow and occurred in the regions with relatively low critical heights of the coronal field decay index; (2) the axis of the CME flux rope rotated in the corona as well as in interplanetary space, which tended to be aligned with the local heliospheric current sheet; (3) the CME was bracketed between slow and fast solar winds, which enhanced the magnetic field inside the CME at 1 au; (4) the geomagnetic storm was caused by the enhanced magnetic field and a southward orientation of the flux rope at 1 au from the rotation of the flux rope.
The Plasma β Evolution through the Solar Corona during Solar Cycles 23 and 24
Authors: Rodríguez Gómez Jenny Marcela , Palacios Judith , Vieira Luis E. A. , Lago Alisson Dal
Published: October 2019

The plasma β is important in the investigation of interchanging roles of plasma and magnetic pressure in the solar atmosphere. It can help to describe features over the photosphere and their changes at different heights. The goal of this paper is to obtain the plasma β variations through the solar corona during solar cycles 23 and 24. The plasma β is reconstructed in different layers of the solar atmosphere. For this purpose, we use an updated version of the COronal DEnsity and Temperature model. In this version we selected different features in the solar atmosphere such as quiet-Sun (QS), faculae, and active regions. We calculate the β variations at different layers in the solar corona (R = 1.14, 1.19, 1.23, 1.28, 1.34, 1.40, 1.46, 1.53, 1.61, 1.74, 1.79, 1.84, and 1.90 R
⊙). In the photosphere we use temperature values from the FALC model to obtain plasma β in QS and faculae. Additionally, variations of the magnetic and kinetic pressure were modeled during the last solar cycles at coronal heights.
A Measurement of the Cosmic Microwave Background Lensing Potential and Power Spectrum from 500 deg2 of SPTpol Temperature and Polarization Data
Authors: Wu W. L. K. , Mocanu L. M. , Ade P. A. R. , Anderson A. J. , Austermann J. E. , Avva J. S. , Beall J. A. , Bender A. N. , Benson B. A. , Bianchini F. , Bleem L. E. , Carlstrom J. E. , Chang C. L. , Chiang H. C. , Citron R. , Moran C. Corbett , Crawford T. M. , Crites A. T. , Haan T. de , Dobbs M. A. , Everett W. , Gallicchio J. , George E. M. , Gilbert A. , Gupta N. , Halverson N. W. , Harrington N. , Henning J. W. , Hilton G. C. , Holder G. P. , Holzapfel W. L. , Hou Z. , Hrubes J. D. , Huang N. , Hubmayr J. , Irwin K. D. , Knox L. , Lee A. T. , Li D. , Lowitz A. , Manzotti A. , McMahon J. J. , Meyer S. S. , Millea M. , Montgomery J. , Nadolski A. , Natoli T. , Nibarger J. P. , Noble G. I. , Novosad V. , Omori Y. , Padin S. , Patil S. , Pryke C. , Reichardt C. L. , Ruhl J. E. , Saliwanchik B. R. , Sayre J. T. , Schaffer K. K. , Sievers C. , Simard G. , Smecher G. , Stark A. A. , Story K. T. , Tucker C. , Vanderlinde K. , Veach T. , Vieira J. D. , Wang G. , Whitehorn N. , Yefremenko V.
Published: October 2019

We present a measurement of the cosmic microwave background lensing potential using 500 deg2 of 150 GHz data from the SPTpol receiver on the South Pole Telescope. The lensing potential is reconstructed with signal-to-noise per mode greater than unity at lensing multipoles L ≲ 250, using a quadratic estimator on a combination of cosmic microwave background temperature and polarization maps. We report measurements of the lensing potential power spectrum in the multipole range of 100 < L < 2000 from sets of temperature-only (T), polarization-only (POL), and minimum-variance (MV) estimators. We measure the lensing amplitude by taking the ratio of the measured spectrum to the expected spectrum from the best-fit Λ cold dark matter model to the Planck 2015 TT + low P + lensing data set. For the minimum-variance estimator, we find

A

MV

=
0.944
±
0.058
(
Stat
.
)
±
0.025

(
Sys
.
)
;

restricting to only polarization data, we find

A

POL

=
0.906
±
0.090

(
Stat
.
)
±
0.040

(
Sys
.
)

. Considering statistical uncertainties alone, this is the most precise polarization-only lensing amplitude constraint to date (10.1σ) and is more precise than our temperature-only constraint. We perform null tests and consistency checks and find no evidence for significant contamination.
Simulations of Ice Chemistry in Cometary Nuclei
Authors: Garrod Robin T.
Published: October 2019

The first computational model of solid-phase chemistry in cometary nuclear ices is presented. An astrochemical kinetics model, the Model for Astrophysical Gas and Ice Chemical Kinetics And Layering, is adapted to trace the chemical evolution in multiple layers of cometary ice, over a representative period of 5 Gyr. Physical conditions are chosen appropriate for “cold storage” of the cometary nucleus in the outer solar system, prior to any active phase. The chemistry is simulated at a selection of static temperatures in the range 5–60 K, while the ice is exposed to the interstellar radiation field, inducing a photochemistry in the outer ice layers that produces significant formation of complex organic molecules. A treatment for the chemistry resulting from cosmic-ray bombardment of the ices is also introduced into the model, along with a new formulation for low-temperature photochemistry. Production of simple and complex molecules to depth on the order of 10 m or more is achieved, with local fractional abundances comparable to observed values in many cases. The production of substantial amounts of O2 (and H2O2) is found, suggesting that long-term processing by high-energy cosmic rays of cometary ices in situ, over a period on the order of 1 Gyr, may be sufficient to explain the large observed abundances of O2, if the overall loss of material from the comet is limited to a depth on the order of 10 m. Entry into the inner solar system could produce a further enhancement in the molecular content of the nuclear ices that may be quantifiable using this modeling approach.
The Role of Asymmetries in Thermal Nonequilibrium
Authors: Klimchuk James A. , Luna Manuel
Published: October 2019

Thermal nonequilibrium (TNE) is a fascinating situation that occurs in coronal magnetic flux tubes (loops) for which no solution to the steady-state fluid equations exists. The plasma is constantly evolving even though the heating that produces the hot temperatures does not. This is a promising explanation for isolated phenomena such as prominences, coronal rain, and long-period pulsating loops, but it may also have much broader relevance. As known for some time, TNE requires that the heating be both (quasi-)steady and concentrated at low coronal altitudes. Recent studies indicate that asymmetries are also important, with large enough asymmetries in the heating and/or cross-sectional area resulting in steady flow rather than TNE. Using reasonable approximations, we have derived two formulae for quantifying the conditions necessary for TNE. As a rough rule of thumb, the ratio of apex to footpoint heating rates must be less than about 0.1, and asymmetries must be less than about a factor of 3. The precise values are case-dependent. We have tested our formulae with 1D hydrodynamic loop simulations and find a very acceptable agreement. These results are important for developing physical insight about TNE and assessing how widespread it may be on the Sun.
Supernova Shocks in Molecular Clouds: Velocity Distribution of Molecular Hydrogen
Authors: Reach William T. , Tram Le Ngoc , Richter Matthew , Gusdorf Antoine , DeWitt Curtis
Published: October 2019

Supernovae from core collapse of massive stars drive shocks into the molecular clouds from which the stars formed. Such shocks affect future star formation from the molecular clouds, and the fast-moving, dense gas with compressed magnetic fields is associated with enhanced cosmic rays. This paper presents new theoretical modeling, using the Paris–Durham shock model, and new observations at high spectral resolution, using the Stratospheric Observatory for Infrared Astronomy, of the H2 S(5) pure rotational line from molecular shocks in the supernova remnant IC 443. We generate MHD models for nonsteady-state shocks driven by the pressure of the IC 443 blast wave into gas of densities 103–105 cm−3. We present the first detailed derivation of the shape of the velocity profile for emission from H2 lines behind such shocks, taking into account the shock age, preshock density, and magnetic field. For preshock densities 103–105 cm−3, the H2 emission arises from layers that extend 0.01–0.0003 pc behind the shock, respectively. The predicted shifts of line centers, and the line widths, of the H2 lines range from 20–2 and 30–4 km s−1, respectively. The a priori models are compared to the observed line profiles, showing that clumps C and G can be explained by shocks into gas with density 103 to 2 × 104 cm−3 and strong magnetic fields. Two positions in clump B were observed. For clump B2 (a fainter region near clump B), the H2 spectrum requires a J-type shock into moderate-density gas (∼102 cm−3) with the gas accelerated to 100 km s−1 from its preshock location. Clump B1 requires both a magnetic-dominated C-type shock (like for clumps C and G) and a J-type shock (like for clump B2) to explain the highest observed velocities. The J-type shocks that produce high-velocity molecules may be locations where the magnetic field is nearly parallel to the shock velocity, which makes it impossible for a C-type shock (with ions and neutrals separated) to form.
Internal Dynamics and Stellar Content of Nine Ultra-diffuse Galaxies in the Coma Cluster Prove Their Evolutionary Link with Dwarf Early-type Galaxies*
Authors: Chilingarian Igor V. , Afanasiev Anton V. , Grishin Kirill A. , Fabricant Daniel , Moran Sean
Published: October 2019

Ultra-diffuse galaxies (UDGs) are spatially extended, low surface brightness stellar systems with regular elliptical-like morphology found in a wide range of environments. Studies of the internal dynamics and dark matter content of UDGs that would elucidate their formation and evolution have been hampered by their low surface brightnesses. Here, we present spatially resolved velocity profiles, stellar velocity dispersions, ages, and metallicities for nine UDGs in the Coma cluster. We use intermediate-resolution spectra obtained with Binospec, the MMT's new high-throughput optical spectrograph. We derive dark matter fractions between 50% and 90% within the half-light radius using Jeans dynamical models. Three galaxies exhibit major axis rotation, two others have highly anisotropic stellar orbits, and one shows signs of triaxiality. In the Faber–Jackson and mass–metallicity relations, the nine UDGs fill the gap between cluster dwarf elliptical (dE) and fainter dwarf spheroidal galaxies. Overall, the observed properties of all nine UDGs can be explained by a combination of internal processes (supernovae feedback) and environmental effects (ram pressure stripping, interaction with neighbors). These observations suggest that UDGs and dEs are members of the same galaxy population.
A Census of Early-phase High-mass Star Formation in the Central Molecular Zone
Authors: Lu 吕 Xing 行 , Mills Elisabeth A. C. , Ginsburg Adam , Walker Daniel L. , Barnes Ashley T. , Butterfield Natalie , Henshaw Jonathan D. , Battersby Cara , Kruijssen J. M. Diederik , Longmore Steven N. , Zhang Qizhou , Bally John , Kauffmann Jens , Ott Jürgen , Rickert Matthew , Wang Ke
Published: October 2019

We present new observations of the C-band continuum emission and masers to assess high-mass (>8

) star formation at early evolutionary phases in the inner 200 pc of the Central Molecular Zone (CMZ) of the Galaxy. The continuum observation is complete to free–free emission from stars above 10–11

in 91% of the covered area. We identify 104 compact sources in the continuum emission, among which five are confirmed ultracompact H ii regions, 12 are candidates of ultracompact H ii regions, and the remaining 87 sources are mostly massive stars in clusters, field stars, evolved stars, pulsars, extragalactic sources, or of unknown nature that is to be investigated. We detect class ii CH3OH masers at 23 positions, among which six are new detections. We confirm six known H2CO masers in two high-mass star-forming regions and detect two new H2CO masers toward the Sgr C cloud, making it the ninth region in the Galaxy that contains masers of this type. In spite of these detections, we find that current high-mass star formation in the inner CMZ is only taking place in seven isolated clouds. The results suggest that star formation at early evolutionary phases in the CMZ is about 10 times less efficient than expected from the dense gas star formation relation, which is in line with previous studies that focus on more evolved phases of star formation. This means that if there will be any impending, next burst of star formation in the CMZ, it has not yet begun.
The Outcome of Diabetic Patients with Cardiomyopathy in Critical Care Unit: Hospital and Short-Term Outcome in a Period of Six Months to One Year
Authors: Obaid Najjat , El Hadidy Samir , El Badry Mahmoud , Khaled Hassan
Published: October 2019

BACKGROUND: Diabetes mellitus (DM) is a major risk factor for heart failure (HF) and coronary artery disease (CAD). DM may cause structural changes involving the left ventricle (LV) systolic and diastolic function.
AIM: To compare patients who have diabetes and ischemic cardiomyopathy (ICM) to those with diabetic cardiomyopathy (DMCMP) regarding LV systolic function, diastolic function, in hospital long term and short-term mortality.
METHODS: Ninety diabetic patients with heart failure and left ventricular ejection fraction (LVEF) ≤ 35%, admitted to Critical Care Medicine department Cairo University were divided into two groups based on coronary angiography results; group I (ICM) n = 48 patients and group II (DMCMP) n = 42 patients.
RESULTS: Group I patients had higher mean age (63 ± 7 years), (p = 0.004), Hypertension (p ˂ 0.001) and dyslipidemia (p = 0.008) were significantly more present in group I compared to group II. No significant differences were found regarding LVEF, global longitudinal strain (GLS), E/A and E/É ratio in both groups. A significant difference in the wall motion score index (WMSI) in group I; (1.4 ± 0.4) versus group II; (1.1 ± 0.2), (p = 0.005) was found. In the study, 6 patients had a cardiogenic shock with no documented in-hospital mortality. At 6 months, statistically, significantly higher mortality rates were found in group I, (p = 0.006), while at one year there was no significant difference in the mortality between the two groups, (p = 0.077). In comparison of the survived and non-survived patients at 6 months and one year in group I (ICM) there was a significant difference in LVEF (40 ± 6% vs 23 ± 6%, p ˂ 0.001), GLS (- 8.1 ± 2.4 vs - 4.6 ± 2.6, p = 0.007), E/A (1.25 ± 0.91 vs 1.8 ± 0.5, p = 0.038), E/É (11.68 ± 7.5 vs 21.3 ± 3.6, p = 0.001) respectively. In group ll (DMCMP) there was no documented mortality at 6 months follow up, however, at one year there was statistically significant difference in the mortality between survived and non-survived patients; the LVEF (35 ± 8% vs 25 ± 2%, p = 0.014), GLS (-7.9 ± 2.9% vs -5 ± 0.1%, p = 0.032), E/A (1.45 ± 0.8 vs 3.3 ± 0, p = 0.006) respectively. The E/É ratio in group ll was not significantly different between the groups (15.73 ± 5.3 vs 15 ± 1, p = 0.873).
CONCLUSION: The combination of cardiomyopathy and diabetes affects LV systolic and diastolic function; however; ischemic cardiomyopathy and diabetic cardiomyopathy had a similar systolic and diastolic function. Ischemic cardiomyopathy is associated with worse prognosis compared to diabetic cardiomyopathy.
Plant Functional Traits in Tropical Dry Forests
Authors: Singh Shipra , Verma Abhishek K.
Published: October 2019

Plants have certain characteristics which allow them to respond to various environmental conditions, like changes in climate, water scarcity in the soil, lack of minerals; among others. In some of these traits, the responses to climatic phenomena such as drought can be evidenced through morphological adaptations (spines, succulent tissues, trichomes) or physiological adaptations (regulation of water potential at the cellular level, the concentration of nutrients, etc.). A systematic literature review was performed to study plant functional traits (PFTs) in tropical dry forests (TDFs). The chapter suggests the role of functional traits in community dynamics and processes. The authors will also highlight the limitations of PFTs in TDFs and how they can be improved.
Geospatial Solutions for Forest Management
Authors: Shrestha Him Lal
Published: October 2019

Nepal is experiencing forest degradation and deforestation due to diverse drivers which are more geographically distributed and having impact at different levels. Those causes and their spatial distribution can be assessed using geospatial approach through GIS, Remote Sensing, and GPS technologies. This approach involves mainly spatial analysis of the resources and their causal factors. Nepal has also implemented several successful forest conservation programs such as Community Forest Development Program, perceived as the most successful program at government initiation. The forest degradation and restoration both can be assessed using GIS technologies. Nepal has already experienced adoption of such technologies to develop the dataset and monitor the forest resource in terms of land use land cover and, forest cover change over the period as a part of National Forest Inventory.