bluuebunny/crossref_metadata_2025 huggingface dataset:
Analisis Pengaruh Jenis Pelumas Dasar Sintetik SAE 10W-40 Terhadap Daya, Torsi dan Konsumsi Bahan Bakar Mesin TIPE 2NR
Authors: Antonius Dikky , Turnip Kimar , Atmadi Priyono , Krisnamurti Alexander Gede Lucky
Published: July 2019

Kendaraan roda 4/mobil menjadi moda transportasi utama saat ini, dan untuk memelihara kualitas kendaraan, perlu dilakukan perawatan dan servis berkala. Salah satu jenis servis tersebut adalah penggantian pelumas/oli. Saat ini terdapat berbagai merk pelumas yang menawarkan berbagai spesifikasi oli, dimana kualitas oli tersebut dipengaruhi oleh jenis bahan dasarnya. Dalam penelitian ini diadakan pengujian perbandingan pengaruh oli dengan bahan dasar sintetik jenis PAO (Polyalphaolephines), Organic Ester dan PAG (Pholyalkhylenglycol). Pengujian ini dilakukan dengan dynamometer dan software Techstream (Toyota). Hasil menunjukkan bahwa untuk mesin tipe 2NR pelumas dasar jenis PAO mempunyai Daya sekaligus torsi yang paling maksimum (sebesar 98.1 HP pada putaran 6200 RPM; dan 126.2 Nm) dibanding pelumas lainnya. Hal yang sama ditunjukkan dalam hal konsumsi bahan bakar. Pelumas jenis PAO menempati konsumsi bahan bakar paling rendah, sementara PAG menempati posisi yang boros, walaupun ketiga jenis pelumas ini mempunyai tendensi yang sama dalam hal konsumsi bahan bakar untuk kecepatan tinggi.

4-Wheeled vehicles/cars become the main mode of transportation recently. To maintain the quality of the vehicles, some maintenance act should be applied periodically. One most favourable is the replacement of lubricants / oil. There are various types of lubricants along with their specifications, where the lubricants quality defined by their components. In this research, three types of synthetic lubricants; PAO (Polyalphaolephines), Organic Ester and PAG (Polyalkylenglycol) are compared. Dynamometer are used as experiment equipment to compare the result of Power along with their Torque, while Techstream software (Toyota) are used to compare their fuel consumption. The result shows that PAO lubricant-type has a highest Power and Torque (98.1 HP pada putaran 6200 RPM; dan 126.2 Nm) compare to the other lubricant-types. The same thing shows in the fuel-consumption experiments. PAO shows the lowest SFC number which means become the most economic lubricant types, while the PAG located to the most extravagant lubricant-type.
A Analisis Kinerja Pembangkit Listrik Dual-Fuel Berbasis Gasifikasi Municipal Solid Waste
Authors: Adnyana I Gede Suparsa , Kusuma Gusti Bagus Wijaya , Suriadi I Gusti Agung Kade
Published: July 2019

Telah dilakukan penelitian tentang pengaruh dual-fuel hasil gasifikasi bahan bakar biomasa terhadap daya keluaran pada mesin diesel kapasitas 40 kW. Penelitian ini bertujuan untuk mengetahui pengaruh aliran gas hasil gasifikasi biomasa sampah campuran perkotaan terhadap daya keluaran pada mesin diesel kapasitas 40 kW. Pengukuran dilakukan dengan mengukur laju udara pembakaran bukaan 0 %, 50 % dan 100%, laju alir syngas, konsumsi bahan bakar spesifik, daya yang dihasilkan dan beban listrik yang diberikan 0%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100%. Data menunjukan bahwa penggunaan, dual-fuel menghasilkan daya keluaran yang lebih besar dibandingkan dan juga mengurangi penggunaan solar sebesar 53.25% dibandingkan single-fuel. Sedangkan dengan membandingkan konsumsi bahan bakar total antara Bukaan Penuh dan Setengah, Bukaan Setengah untuk menghasilkan daya yang sama dengan Bukaan Penuh pada rasio beban 100% yaitu 36.6 kW perlu melakukan pengoperasian lebih banyak 3.05 kali namun mampu mengurangi konsumsi bahan bakar total sejumlah 5.835 kg/Jam.

Research on the effect of dual-fuel biomass fuel gasification results on the output power of diesel engines with a capacity of 40 kW. This study aims to determine the effect of gas flow from urban mixed biomass gasification results on the output power of diesel engines with a capacity of 40 kW. Measurements were made by measuring the open air combustion rate of 0%, 50% and 100%, syngas flow rate, specific fuel consumption, power generated and electrical loads given 0%, 10%, 20%, 30%, 40%, 50 %, 60%, 70%, 80%, 90%, 100%. Data shows that the use of dual-fuel produces greater output power and also reduces diesel fuel use by 53.25% compared to single-fuel. Whereas by comparing the total fuel consumption between Full and Half Openings, Half Openings to produce the same power as Full Openings at a load ratio of 100%, which is 36.6 kW, it needs to do more operation 3.05 times but is able to reduce the total fuel consumption by 5,835 kg / hour .
A Analisis Kinerja PLTD Dual-Fuel Di PT. Indonesia Power UBP Bali
Authors: Putra I Gede Kusuma , Kusuma I Gusti Bagus Wijaya , Budiana Penindra I Made Dwi
Published: July 2019

Penelitian kinerja PLTD dual-fuel berbahan bakar solar dan gas hasil gasifikasi bambu di PT. Indonesia Power UBP Bali ini bertujuan untuk mengetahui kemampuan bambu agar mampu mengurangi penggunaan bahan bakar solar yang kini ketersediaannya semakin menispis dengan menggunakan sistem dual-fuel pada pembangkit listrik tenaga diesel. Pengukuran dilakukan dengan mengukur laju alir udara pembakaran dengan bukaan 0%, 50% dan 100%, laju alir gas produser (syngas), konsumsi bahan bakar spesifik, dan daya genset, serta rasio beban listrik yang diberikan 0%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100% dengan kapasitas genset 40 kW. Data yang didapatkan menunjukkan daya yang dihasilkan dari mode dual-fuel lebih besar yaitu 36,6 kW, dan konsumsi bahan bakar yang lebih sedikit yaitu 6,55 L/jam dengan 100% bukaan valve udara pembakaran.Substitusi penggunaan bahan bakar syngas terhadap bahan bakar solar mampu mengurangi total penggunaan bahan bakar solar sebesar 47,3%.

Research on the performance of dual-fuel diesel power plant with diesel fuel and bamboo gasification gas in PT. Indonesia Power UBP Bali aims to determine the ability of bamboo to be able to reduce the use of diesel fuel which is now the availability is running low, by using a dual-fuel system in a diesel power plant. Measurements were made by measuring the combustion air flow with openings of 0%, 50% and 100%, producer gas flow rate (syngas), specific fuel consumption, and generator power, and the ratio of electrical loads given 0%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100%, with a generator capacity of 40 kW. The data obtained shows that the power produced from the dual-fuel mode is greater at 36.6 kW, and less fuel consumption of 6.55 L/h with 100% combustion air valve openings.The substitution for the use of syngas fuel for diesel fuel is able to reduce the total use of diesel fuel by 47.3%.
Kinerja Termal Pipa Kalor Tembaga pada Fluida Kerja Air
Authors: Febraldo David , Septiadi Wayan Nata , Astawa Ketut
Published: July 2019

Pipa kalor (Heat pipe) merupakan salah satu teknologi penukar kalor dua fase sistem pasif, pipa kalor itu sendiri memiliki struktur dengan konduktivitas termal tinggi, hal ini memungkinkan transportasi panas dengan mempertahankan perbedaan suhu sehingga seragam di sepanjang bagian yang dipanaskan dan didinginkan. Kinerja termal pipa kalor dapat ditentukan dari nilai hambatan panas. Ketika hambatan panas bernilai kecil, maka laju perpindahan kalor meningkat begitu pula sebaliknya. Pengujian kinerja termal  pipa kalor tembaga pada fluida kerja air telah dilakukan. Kinerja termal dapat diamati dari hasil pengambilan data temperatur dan pengolahan data. Hasil dari penelitian ini menunjukkan perbedaan temperatur antara temperatur pemanas dan dan temperatur fluida terus meningkat dengan kenaikan laju perpindahan panas dari variasi beban pemanasan 70 volt, 90 volt, 110 vot, 130 volt, dan 150 volt.

Heat pipe is a passive two-phase heat exchanger technology, heat pipe itself has a structure with high thermal conductivity, this allows heat transportation by maintaining a uniform temperature difference along the heated and cooled part. Thermal performance of heat pipes can be determined from the value of heat resistance. When heat resistance is small, the heat transfer rate increases and vice versa. Testing the thermal performance of copper heat pipes on the working fluid of water has been carried out. Thermal performance can be observed from the results of temperature data collection and data processing. The results of this study indicate the temperature difference between heating temperature and fluid temperature continues to increase with increasing heat transfer rates from variations in heating loads of 70 volts, 90 volts, 110 vot, 130 volts, and 150 volts.
The Role Of Foreign Ownership In Moderating The Effect Of Company Size On Intellectual Capital Disclosure
Authors: Chen Ming
Published: July 2019

The purpose of the empirical study is to examine whether foreign ownership in moderating the relationship between company size and disclosure of intellectual capital. In this study, the variables of foreign ownership are measured by the amount of foreign ownership divided by the total number of shareholders in the company. The size of the company is proxied by Market Capitalization. Moreover, the disclosure of intellectual capital is measured by the ICD (Intellectual Capital Disclosure) Index which amounts to 25 items. The sample of this research is manufacturing companies listed on the Indonesia Stock Exchange from 2014 to 2017. This study uses the MRA model and uses SPSS as a testing tool. The result of this study is the foreign ownership is able to moderate the relationship between company size and disclosure of intellectual capital.
FORMAÇÃO TÉCNICA E MERCADO DE TRABALHO: UM ESTUDO DA IMPORTÂNCIA-DESEMPENHO SOB A ÓTICA DOS GESTORES QUE ATUAM COM TÉCNICOS EM ADMINISTRAÇÃO EGRESSOS DO SENAC-ES
Authors: Silveira Júnior Robson , Dumer Miguel Carlos Ramos , Gobbi Beatriz Christo , Carvalho Nádia , Dumer Juliana Bremenkamp Medeiros
Published: July 2019

Com um estudo exploratório-descritivo foi desenvolvido e aplicado uma survey com objetivo de avaliar a percepção de gestores da Grande Vitória-ES sobre a relevância e o desempenho dos profissionais técnicos egressos do curso técnico de administração do SENAC-ES, em relação às competências preconizadas na formação destes. Foram entrevistados gestores que tralham ou trabalharam diretamente com profissionais técnicos em administração formados pelo SENAC-ES, de empresas da mesma região da grande Vitória-ES. A entrevista foi aplicada em outubro de 2015 e dividida em duas etapas. A primeira dizia respeito a dados gerais dos respondentes e da empresa, a segunda apresentavam características das competências esperadas dos egressos, para que declarassem a relevância que atribuem e o afetivo desempenho destas pelo egresso. Os dados foram dispostos e analisados a partir da utilização da matriz de importância-desempenho desenvolvida por Slack (1993). Como resultado viu-se que os gestores atribuem maior importância às características observadas do que percebem de desenvolvimento das mesmas nos profissionais técnicos em administração. Além disso, três tipos de competências encontram-se em situação que demanda atenção urgente, conforme opinião dos gestores e os padrões da matriz.
O Papel do Design Na Construção De Marca Em Microempresas De Moda – Abordando O Ponto De Vista De Microempresários
Authors: Marques Debora Idalgo Paim
Published: July 2019

Consoante com as transformações socioeconômicas ocorridas nas últimas décadas, o mercado global do vestuário se organiza de maneira que grandes empresas, beneficiadas pela economia em escala, expandam-se e atuem em mercados de diversos países. Dessa forma, micro e pequenas empresas locais são impelidas a repensarem suas identidades de marca. Portanto, o intuito do presente artigo é abordar o papel do design na construção de marca em microempresas de moda, para isso, além da revisão de literatura sobre o assunto, são expostos os resultados de uma pesquisa de abordagem qualitativa, de base teórica ancorada no interacionismo simbólico, realizada com cinco microempresários do setor, na cidade de Porto Alegre. Os resultados indicam a consciência, por parte dos entrevistados, a respeito da importância do design, ainda que as percepções sobre o papel do design na construção de suas marcas variem entre os participantes ouvidos
PILVIÄ JA SATEENKAARIA – KESÄ NEW YORKISSA JULKAISUALAN KOULUTUKSESSA
Authors: Mikkonen Jenni , Lahikainen Johanna
Published: July 2019

Julkaisualan koulutus Columbian yliopistossa New Yorkissa opetti amerikkalaista työkulttuuria ja kustannusmaailmaa. Sen parasta antia olivat henkilökohtainen ohjaus, irtiotto ja unelman saavuttaminen. Haasteensa toivat pitkät päivät ja lähes tauottoman sosiaalisuuden vaatimus.
KUKA TUTKIMUKSESI ARVOA MITTAA, MILLÄ PERUSTEILLA, MITEN JA MIKSI?
Authors: Ojanen Mikko
Published: July 2019

Kolumni on julkaistu alun perin Musiikin suunnan numerossa 1/2019 (Ojanen 2019) ja se on avointa tiedettä ja tiedejulkaisemista käsittelevän kolumnitrilogian kolmas osa – sarjan aiemmat osat ovat Avoin tiede on huono otsikko (Ojanen 2018a) ja Julkaise avoimesti, mutta älä somessa (Ojanen 2018b)
Kuantifikasi Pengaruh Understandability dan Maintainability pada Evolusi Perangkat Lunak
Authors: Adhy Mochammad , Priyambadha Bayu , Pradana Fajar
Published: July 2019

Understandability dipercaya sebagai salah satu faktor yang mempengaruhi proses maintenance. Hal ini dikarenakan dalam praktiknya tidak selalu tim pengembang yang sama yang melakukan perbaikan kesalahan pada perangkat lunak. Jika pengembang sebelumnya tidak ada maka pengembang yang baru atau staff maintenance perlu untuk memahami sistemnya terlebih dahulu. Sebagai contoh, dalam sebuah percobaan mengenai inspeksi kode, 60% dari isu yang dilaporakan oleh reviewer profesional pada maintenance terkait dengan understandability. Berdasarkan realita tersebut munculah motivasi untuk melakukan penelitian mengukur seberapa besar keterkaitan understandability dengan maintainability pada evolusi perangkat lunak. Penelitian ini menggunakan pendekatan statistika yaitu spearman’s rank correlation untuk menganalisis tingkat keterkaitan antara understandability dengan maintainability. Berdasarkan percobaan yang dilakukan pada tiga macam perangkat lunak, ditemukan bahwa nilai rata-rata keterkaitan understandability terhadap maintainability pada proses evolusi perangkat lunak sebesar 0,95 yang menjelaskan bahwa korelasi kedua variabel tersebut sangatlah kuat.

Abstract

Understandability is believed to be one of the factors that affect maintenance process. This is because in practice it is not always the same development team is tasked to makes improvements to the software. If the previous developer does not exist then a new developer or maintenance staff needs to learn the system first. For example, in the experiment about code inspection, 60% of the issues reported by professional reviewers on maintenance related to understandability. Based on these realities, emerged a motivation to conduct a research related to the measurement of correlation between understandability and maintenance on software evolution. This research uses a statistical approach that is spearman’s rank correlation to analyze the level of linkage between understandability and maintainability. From the conducted experiment on three types of software in software evolution process shows that spearman’s rank correlation of 0,95 which means understandability has a very strong correlation with maintainability.
Analisis Sentimen pada Opini Pengguna Maskapai Penerbangan Menggunakan Hybrid Cuckoo Search
Authors: Rozi Nanang Fakhrur , Arianto Fandi , Hapsari Dian Puspita
Published: July 2019

Tingginya minat penggunaan pesawat terbang dipengaruhi oleh tingginya tingkat mobilitas masyarakat yang menuntut perpindahan kota dalam waktu yang singkat. Meski demikian, tidak semua maskapai penerbangan mampu memberikan layanan yang memuaskan bagi konsumennya. Kualitas layanan yang diberikan oleh suatu maskapai, baik dari segi keselamatan, keamanan, maupun kenyamanan, umumnya dapat diketahui melalui opini penumpang lainnya. Banyaknya opini negatif yang didapat oleh maskapai mengindikasikan buruknya kualitas layanannya, begitu pula sebaliknya. Akan tetapi, jumlah opini yang semakin hari semakin meningkat menyebabkan sulitnya konsumen dalam menilai kualitas maskapai secara cepat. Oleh karena itu, analisis sentimen dibutuhkan guna mempercepat konsumen dalam menilai kualitas layanan maskapai. Hybrid Cuckoo Search (HCS) merupakan salah satu metode yang dapat digunakan untuk melakukan analisis tersebut. Metode ini mampu mengelompokkan informasi secara cepat. Penelitian ini bertujuan untuk mengimplementasikan HCS dalam melakukan analisis sentimen pada data opini penumpang maskapai penerbangan. Hasil uji coba menunjukkan bahwa nilai rata-rata akurasi, precision, dan recall dari data opini 7 maskapai dengan 1.000 iterasi masing-masing sebesar 69,24%; 70,88%; dan 77,57%.

 

Abstract

The high demands of airplanes usage are influenced by the increasing levels of people's mobility who want to trip from one city to another in a short time. However, not all airlines company could provide satisfactory services for the consumers. The quality of services provided by an airline, in terms of safety, security, and convenience, is usually known through passenger opinions. The number of negative opinions gained by airlines indicates its poor quality of service and vice versa. However, the increasing number of opinion increases the difficulty of the consumer in assessing the quality of the airline quickly. Therefore, sentiment analysis is needed to accelerate the consumer in assessing the quality of airline services. Hybrid Cuckoo Search (HCS) is a method which can be used in conducting such analysis. This method is able to group information quickly. This study aims to implement HCS in conducting sentiment analysis on airline passenger opinion data. The results show that the averaged accuracy, precision, and recall from opinion dataset of 7 airlines company at 1,000 iteration are 69.24%, 70.88%, and 77.57% respectively.
Implementasi Mekanisme End-To-End Security pada IoT Middleware
Authors: Pramukantoro Eko Sakti , Bakhtiar Fariz Andri , Aji Ahmad Lutfi Bayu , Dewa Deny Hari Prasetya
Published: July 2019

Pada penelitian sebelumnya telah dikembangkan sebuah middleware dengan pendekatan event-driven yang mampu mendukung interoperabilitas berbagai macam perangkat sensor pada lingkungan IoT. Namun, skema komunikasi pada middleware tersebut masih terdapat celah keamanan dan menimbulkan ancaman berupa eavasdropping. Solusi dari permasalahan ini adalah menerapakan mekanisme end-to-end security. Dalam penelitian ini dilakukan penerapan algoritme kriptografi AES-CBC 128 pada komunikasi node sensor ke middleware dan mekanisme TLS pada komunikasi middleware dengan aplikasi berbasis IoT. Hasil yang didapat end-to-end security berbasis kriptografi pada pub/sub dapat menjamin kerahasiaan data dengan enkripsi payload akan tetapi topik masih terlihat, sedangkan TLS/SSL menjamin kerahasiaan seluruh data yang dikirim. Penggunaan mekanisme ini tidak berdampak signifikan pada delay pengiriman data, yaitu masih dibawah 1 detik

 Abstract

An IoT middleware for handling interoperability is proposed in previous works. However, a vulnerability that can lead to the eavesdropping attack exist. there is no security mechanism in the communication system among middleware with other parties like node sensors and subscribers. This research implements the end to end security to the existing IoT middleware.  AES-CBC 128 is used to secure communication between sensor nodes to middleware and used TLS/SLL between middleware and subscriber. The results show both mechanisms can securely communication between middleware and other parties, but AES-CBS can only secure data payload, not entire data. This mechanism has no significant impact on the delay transmission, which is still under 1 second
Implementasi Data Mining untuk Rekomendasi Pengambilan Mata Kuliah Pilihan Mahasiswa Sistem Informasi
Authors: Iswara I Putu Pradnyana , Supianto Ahmad Afif
Published: July 2019

Pada penelitian ini kami mengimplementasikan algoritma klasifikasi untuk memberikan rekomendasi kepada mahasiswa keminatan apa yang lebih cocok diambil berdasarkan nilai-nilai mata kuliah prasyarat di semester-semester sebelumnya. Diharapkan dengan adanya rekomendasi ini semakin jelas pembatas antara disiplin ilmu yang ada pada Program Studi Sistem Informasi Universitas Brawijaya dimana terdapat 3 jenis jalur keminatan mata kuliah pilihan yaitu Database, Logika & pemrograman dan Manajemen SI/TI. Data set yang terdiri dari data training dan data testing merupakan data akademik dari mahasiswa angkatan 2015 yang sudah mengambil mata kuliah pilihan, data target dari penelitian ini adalah data akademik mahasiswa angkatan 2016. Algoritma klasifikasi yang digunakan adalah Rule Induction, CHAID, Random Forest, ID3,  dan Naive Bayes. Komposisi dari data training dan testing diubah-ubah untuk mengetahui pengaruh perubahan komposisi tersebut. Kelima algoritma tersebut diuji sebanyak 5 kali. Dari seluruh hasil pengujian didapatkan rata-rata akurasi dari kelima metode yang diusulkan berturut-turut adalah 66,48%, 67,49%, 80,62%, 86,90% dan 77,68%. Hasil tersebut menunjukkan bahwa algoritma dengan rata-rata akurasi tertinggi dimiliki oleh algoritma ID3 dikarenakan algoritmanya yang fleksibel dan dapat lebih akurat untuk menguji data yang digunakan.
Tres momentos, una idea. Un concepto filosófico acerca del desarrollo del ser humano presente en la psicología contemporánea
Authors: Roldán Juan Pablo
Published: July 2019

Existen vínculos filosóficos entre el pensamiento romántico, el positivismo materialista, el psicoanálisis y algunas ideas centrales de las actuales neurociencias. Uno de ellos, de muchas consecuencias teóricas y prácticas, es la tesis metafísica que identifica el ‘orden temporal’ y el ‘orden de naturaleza’ en el desarrollo humano –las expresiones pertenecen a Santo Tomás de Aquino–. Se ilustra aquí esta hipótesis con la comparaciónentre tres momentos de la historia de la psicología, protagonizados por Cesare Lombroso, Sigmund Freud y Antonio Damasio respectivamente.
Un discreto homenaje a Juan Carlos Onetti
Authors: Rodríguez Mansilla Fernando
Published: July 2019

En este trabajo se ofrece un análisis de los préstamos y recreaciones que lleva a cabo Hugo Fontana de los materiales narrativos provenientes de la obra de Juan Carlos Onetti en su cuento “Agnieszka en la costa” (incluido en Desaparición de Susana Estévez, 2015). Mi objetivo es revelar tanto su esmerada adaptación como las implicancias semánticas que resultan de esa labor. Onetti era lector de novela negra y varios textos suyos recrean los mecanismos narrativos de este género. En Fontana encontramos un interés parecido, pero con una faceta nueva: la denuncia política.
Pengembangan Modul Berbasis Masalah Menulis Naskah Drama Siswa Kelas VIII SMP N 4 Siak Hulu Kabupaten Kampar
Authors: Suriadiman Noprieka
Published: July 2019

Teaching writing skill is one form of teaching language skills that must be mastered by students. One of the important writing activities carried out by students in school is the skill of drama scripts writing. However, in learning material for writing scripts, there were still many students learning outcomes that did not meet the KKM. The weakness of students in writing drama scripts was caused by various factors, such as the technique or approach used by the teacher was not appropriate and the learning materials provided were inadequate for students. So that the aim of the study was to produce a problem-based module in the learning of drama scripts writing. Further, the research subjects were eighth-grade students of SMPN 4 Siak Hulu amounting 36 students. The results of this study were valid, practical, and effective problem-based modules for eighth-grade students for learning drama scripts writing. It was also evidenced by the value of module validity of 91.41% with very valid criteria. The module practicality value was 83.82% with very practical criteria, while module practicality by students was 78.27% with practical criteria. Additionally, the effectiveness of the module consists of students’ evaluating the overall activity was 88.33% with very high criteria or very successful. On the other hand, the overall assessment of drama script writing was 84.04 with good qualifications.
Penerapan Metode JIGSAW untuk Meningkatkan Hasil Belajar Bahasa Indonesia Siswa Kelas V SD Negeri 010 Beringin Jaya
Authors: Asriani Eny
Published: July 2019

The author discussed the Indonesian language learning problem by incorporating the cooperative type jigsaw method in the teaching and learning process. The purpose of this study was to improve the learning outcomes of fifth-grade students at Beringin Jaya Elementary School using the jigsaw cooperative method. This research was conducted on the fifth-grade students of SDN 010 Beringin Jaya, with a total number of 20 students consisting of 12 female students and 8 male students. This research was conducted in 2 cycles starting from the end of March to May 2016. The results of the study showed that each cycle of teacher activity increased. It is seen that the teacher activity score in the first cycle got a score of 19 in the good category, and in the second cycle got a score of 23 categorized very well. Student activities from activities, in the first cycle, got a score of 20 categorized very well, and in the second cycle got a score of 22 very good categories. Additionally, the improvement of student learning outcomes was seen clearly, in the first cycle was 83.33%, while in the second cycle 91.66% of students completed. Thus, the use of the jigsaw cooperative method in Indonesian language learning can improve the learning outcomes of fifth-grade students of SDN 010 Beringin Jaya.
Peningkatkan Hasil Belajar Bahasa Indonesia dengan Pendekatan Interaksi Edukatif Siswa Kelas VI SD Negeri 008 Pulau Lancang Kecamatan Benai Kabupaten Kuantan Singingi
Authors: Idawati Idawati
Published: July 2019

The purpose of this study was to improve the learning outcomes of Indonesian language by using experiential learning models atsixth grade students of SD Negeri 008 Pulau Lancang, Benai District, Kuantan Singingi Regency. This research was conducted based on student learning activities in the Indonesian learning process is still low so as to produce learning does not meet the KKM which has been set by the school which is 70. Furthermore, this research was conducted in two cycles. Each cycle consists of four sides, namely planning, implementation, observation and reflection. To collect research data used a collection sheet that was filled by observers and learning outcomes tests given at the end of the cycle. Student learning activity data was analyzed by the number and percentage of students involved in each meeting. The improvement of learning outcomes can be seen from the number of students who completed at the end of the cycle. The results showed that learning activities and student learning outcomes improved after being implemented in the first cycle of students who achieved excellent grades from 12 students only 2 (17%), both 3 people (25%), sufficient categories of 2 people (17%) and at there are less categories of 5 students (42%) while in the second cycle increased to 8 students (67%) has found a very good category and 4 students (33%) in the good category that meant 100% of students have finished. Based on the result of the research, it can be concluded that the application of the educative learning model can improve the learning outcomes of Indonesian language of sixth grade students at SD Negeri 008 Pulau Lancang.
Peningkatan Hasil Belajar Bahasa Indonesia melalui Pendekatan Metode Inkuiri Model Kooperatif Tipe Make A Match Siswa Kelas V SD Negeri 008 Pulau Lancang
Authors: Lesta Raja
Published: July 2019

The purpose of class action research carried out to improve the activities and learning outcomes of Indonesian language subject by using the Inquiry Method cooperative learning model type make a match of the fifth grade at SDN 008 Pulau Lancang, Benai District, Kuantan Singingi District. To obtain the data, researcher used observation sheet to collect student activities that were fulfilled by the observer and test the learning outcomes given at the end of the cycle. Student learning activity data was analyzed by determining the number and percentage of students involved at each meeting. The improvement of learning outcomes can be seen from the number of students who completed at the end of the cycle. The results showed that the study of learning and student learning outcomes used improvement where in the initial data from 14 students only 2 people who achieved SKM after being implemented in the first cycle increased to 8 people (57.1%) and increased in the second cycle to 85.7 students who achieve completeness, so it increased by 28.6 % but there were still some students who had not yet achieved the SKM score. Overall, it can be concluded that inquiry into the cooperative learning model type make a match can improve learning outcomes Indonesian Language of the fifth grade at SDN 008 Pulau Lancang, Benai District, Kuantan Singingi District.
The Crystalline Sponge Method in Water
Authors: de Poel Wester , Tinnemans Paul , Duchateau Alexander L. L. , Honing Maarten , P. J. T. Rutjes Floris , Vlieg Elias , de Gelder Rene
Published: July 2019

The crystalline sponge method entails the elucidation of the (absolute) structure of molecules from a solution phase using single-crystal X-ray diffraction and eliminates the need for crystals of the target compound. An important limitation for the application of the crystalline sponge method is the instability of the available crystalline sponges that can act as host crystals. The host crystal that is most often used decomposes in protic or nucleophilic solvents or when guest molecules with Lewis basic substituents are introduced. Here we disclose a new class of (water) stable host crystals based on f-block metals. We show that these hosts not only increase the scope of the crystalline sponge method to a wider array of solvents and guests, but that they can even be applied to aqueous solutions containing hydrophilic guest molecules, thereby extending the crystalline sponge method to the important field of water-based chemistry.
Predicting Retrosynthetic Reaction using Self-Corrected Transformer Neural Networks
Authors: Zheng Shuangjia , Rao Jiahua , Zhang Zhongyue , Xu Jun , Yang Yuedong
Published: July 2019

Synthesis planning is the process of recursively decomposing target molecules into available precursors. Computer-aided retrosynthesis can potentially assist chemists in designing synthetic routes, but at present it is cumbersome and provides results of dissatisfactory quality. In this study, we develop a template-free self-corrected retrosynthesis predictor (SCROP) to perform a retrosynthesis prediction task trained by using the Transformer neural network architecture. In the method, the retrosynthesis planning is converted as a machine translation problem between molecular linear notations of reactants and the products. Coupled with a neural network-based syntax corrector, our method achieves an accuracy of 59.0% on a standard benchmark dataset, which increases >21% over other deep learning methods, and >6% over template-based methods. More importantly, our method shows an accuracy 1.7 times higher than other state-of-the-art methods for compounds not appearing in the training set.
Docking Flexible Cyclic Peptides with AutoDock CrankPep
Authors: Zhang Yuqi , Sanner Michel
Published: July 2019

While a new therapeutic cyclic peptide is approved nearly every year, docking large macrocycles has remained challenging. Here, we present a new version of our peptide docking software AutoDock CrankPep (ADCP), extended to dock peptides cyclized through their backbone and/or sidechain disulfide bonds. We show that within the top 10 solutions, ADCP identifies the proper interactions for 71% of a dataset of 38 complexes, thus making it a useful tool for rational peptide-based drug design.
Colloidal ReO3 Nanocrystals: Extra Re d-Electron Instigating a Plasmonic Response
Authors: Ghosh Sandeep , Lu Hsin-Che , Cho Shin Hum , Maruvada Thejaswi , Price Murphie C. , Milliron Delia
Published: July 2019

Rhenium (+6) oxide (ReO3) is metallic in nature, which means it can sustain localized surface plasmon resonance (LSPR) in its nanocrytalline form. Herein, we describe the colloidal synthesis of nanocrystals (NCs) of this compound, through a hot-injection route entail- ing the reduction of rhenium (+7) oxide with a long chain ether. This synthetic protocol is fundamentally different from the more widely em- ployed nucleophilic lysing of metal alkylcarboxylates for other metal oxide NCs. Owing to this difference, the NC surfaces are populated by ether molecules through an L-type coordination along with covalently bound (X-type) hydroxyl moieties, which enables easy switching from nonpolar to polar solvents without resorting to cumbersome ligand exchange procedures. These as-synthesized NCs exhibit absorption bands at around 590 nm (≈2.1 eV) and 410 nm (≈3 eV), which were respectively ascribed to their LSPR and interband absorptions by Mie theory simulations and Drude modeling. The LSPR response arises from the oscillation of free electron density created by the extra Re d-electron per ReO3 unit in the NC lattice, which resides in the conduction band. Further, the LSPR contribution facilitates the observation of dynamic optical modulation of the NC films as they undergo progressive electrochemical charging via ion (de)insertion. Ion (de)insertion leads to distinct dynamic optical signatures, and these changes are reversible in a wide potential range depending on the choice of the ion (lithium or tetrabu- tylammonium). Nanostructuring in ReO3 and the description of the associated plasmonic properties of these NCs made this optical modulation feasible, which were hitherto not reported for the bulk material. We envisage that the synthetic protocol described here will facilitate further exploration of such applications and fundamental studies of these plasmonic NCs
Theoretical Bounds on Electron Energy Filtering in Disordered Nanomaterials
Authors: Dodin Amro , Aull Brian F. , Kunz Roderick R. , Willard Adam
Published: July 2019

This manuscript presents a theoretical model for determining the electron energy filtering properties of nanocomposite materials. Individual nanoparticles can serve as energy filters for tunneling electrons due their discretized energy levels. Nanomaterials comprised of many individual nanoparticles can in principle serve the same purpose, however, particle polydispersity can lead to an additional source of energetic broadening. We describe a simple theoretical model that includes the effects of discrete energy levels and inhomogeneous broadening. We use this model to identify the material parameters needed for effective energy filtering by quantum dot solids.
Predicting and Experimentally Validating Hot-Spot Residues at Protein-Protein Interfaces
Authors: Ibarra Amaurys , Bartlett Gail J. , Hegedus Zsofia , Dutt Som , Hobor Fruzsina , Horner Katherine , Hetherington Kristina , Spence Kirstin , Nelson Adam , Edwards Thomas , Woolfson Derek N , Sessions Richard , Wilson Andrew
Published: July 2019

Here we describe a comparative analysis of multiple CAS methods, which highlights effective approaches to improve the accuracy of predicting hot-spot residues. Alongside this, we introduce a new method, BUDE Alanine Scanning, which can be applied to single structures from crystallography, and to structural ensembles from NMR or molecular dynamics data. The comparative analyses facilitate accurate prediction of hot-spots that we validate experimentally with three diverse targets: NOXA-B/MCL-1 (an α helix-mediated PPI), SIMS/SUMO and GKAP/SHANK-PDZ (both β strand-mediated interactions). Finally, the approach is applied to the accurate prediction of hot-residues at a topographically novel Affimer/BCL-xL protein-protein interface.
Identification of Strategic Molecules for Future Circular Supply Chains Using Large Reaction Networks
Authors: Weber Jana , Lio’ Pietro , Lapkin Alexei
Published: July 2019

Networks of chemical reactions represent relationships between molecules within chemical supply chains and promise to enhance planning of multi-step synthesis routes from bio-renewable feedstocks. This study aims to identify strategic moleculesin chemical reaction networks that may potentially play a significant role within the future circular economy. We mine a commercially available database in order to assemble a network of chemical reactions. We describe molecules within the network by a portfolio of graph theoretical features, and identify strategic molecules with an isolation forest search algorithm. In this work we have identified a list of potential strategic molecules and indicated possibilities for reaction planning using these. This is exemplified by a potential supply chain of functional molecules from bio-waste streams that could be used as feedstocks without being converted to syngas. This work extends the methodology of analysis of reaction networks to the generic problem of development of new reaction pathways based on novel feedstocks.
Idiopathic Thrombocytopenic Purpura (ITP): A Case Report
Authors: Santosh Agarwal  , Neha Jajodia  , Subha Laksmi  , Priya Kandpal
Published: July 2019

Idiopathic thrombocytopenic purpura (ITP) is an anomalous decrease in the number of platelets with obscure etiologic causes. Clinical signs primarily include muco-cutaneous i.e. Petechia, purpura, ecchymosis. The most important aspects of management in this disease, is to anticipate, and control bleeding hence preventing any life threatening consequences. Transfusion of platelets, steroid therapy, Anti-D immunoglobulin are the main stay of treatment. Thrombopoietin receptor agonists and splenectomy may be necessary in some severe cases. We report a case of a young girl with ITP, identified at our unit. She was admitted to the hospital for observation and was successfully treated with steroids therapy.
Rare Occurrence of Four Rooted Maxillary Third Molar: A Case Report
Authors: Shashank Yadav
Published: July 2019

This case report presents a rare variant of maxillary third molar variant, which had four roots. A 48-year-old male patient complained about severe pain in his left maxillary tooth region of the jaw. A clinical intraoral inspection and radiography were carried out on the tooth, and a diagnosis of chronic apical periodontitis was made. An uneventful extraction was performed for the same.
Significance of Correct Diagnosis of Odontogenic Extraoral Sinus: A Report Of Two Cases
Authors: Shweta Bansal  , Ruchi Juneja  , Gyanendra Mishra  , Akshay Nambiar
Published: July 2019

Cutaneous draining sinus tracts of odontogenic origin often are a diagnostic challenge. A delay in correctly diagnosing these types of lesions can result in unnecessary antibiotic therapy and surgical treatment. This case report presents the clinical course of two cases with extra-oral sinus tract formation, from diagnosis and treatment to short-term follow-up and evaluation. These facial lesions were initially misdiagnosed as lesions of non-odontogenic origin. Later on an odontogenic cause was identified and endodontic intervention resulted in resolution of the problem, confirming the initial misdiagnosis.
Ergonomics: Need of the Hour
Authors: Tarun Kalra  , Geeta Kalra  , Mohit Bansal  , Swati Uppal
Published: July 2019

The success in any practice is dependent on efficient workflow, with minimum risk to injury and cumulative trauma. Work in a dental office calls for deftness in cognitive abilities and can, more often than not, be physically challenging. Repeated use of movements and postures that go against the natural or anatomical alignment and limitations of the human body often lead to what is known as cumulative trauma leading to development of musculoskeletal disorders. The whole idea of ergonomics in the workplace is to avoid any such exigencies. Through this review it is intended to bring forth the widely known yet often neglected aspect of dental practice; that is the human factor in workplace efficiency.
World Autism Awareness Day
Authors: Parul Chawla
Published: July 2019

World Autism Awareness Day Editorial Comment By Parul Chawla, Editorial Co-ordinator, IHRJ
Stem Cell Therapy: A Review
Authors: Mridha Sharma  , Kirandeep Kaur
Published: July 2019

The human body is an intricate system consisting of numerous cells and tissues working in an organized fashion for the sustenance of life and stem cell biology become an important field for the understanding of tissue regeneration and implementation of regenerative medicine. Stem cells have capability of replicating themselves and can be readily available at the time of a planned procedure. Furthermore, it’s been shown that these cells have high potential to serve as resources not for medical therapies and tissue engineering, but also for dental or bone reconstruction. Stem cell research is not merely a science fiction but has rather opened the door for future treatment modalities.
Geriatrics and Periodontics: A Review
Authors: Mayank Jain  , Kesari Singh
Published: July 2019

Oral health is an important aspect of general well being and in the elderly population compromised oral care has been considered a major risk factor for various health problems. Hence oral-systemic diseases linkage is a special health concern for this elderly population and high quality of oral health care should be available to all regardless of age or circumstances.
Pulmonary Mucormycosis with Diabetes Mellitus: A Case Report
Authors: Shikha Jain  , Bharat Sharma
Published: July 2019

Mucormycosis is an uncommon but life threatening fungal infection that generally occurs mostly in immunocompromised patients. Patients do not respond to the antibiotics and so the condition may prove to be fatal if not timely detected. In this report, we summarize a case of pulmonary mucormycosis in a patient with diabetes mellitus who was cured using Amphotericin B.
Managing Antibiotic Associated Diarrhea With Pseudomembranous Colitis: A Case Report
Authors: Kandla Sharma  , Ankit Mangla
Published: July 2019

Antiobiotic associated diarrhea is a usual adverse event during antibiotic therapy. We present the case of a 32-year-old female diagnosed with diarrhea induced by antibiotics. After eradication of Helicobacter pylori by using antibiotics, she presented with hemorrhagic stools. The faecal examination was positive for, Clostridium difficile infection (CDI) although no toxins were detectable. Vancomycin was initiated for the C. difficile infection but the condition worsened due to treatment non-compliance. Finally oral metronidazole was prescribed. Stool abnormality improved and faecal test became negative after metronidazole treatment.
An Unusual Case Report of Erythematous Lichen Planus in a 23 Year Old Female
Authors: Kirandeep Kaur  , Mridha Sharma  , Gurkiran Kaur
Published: July 2019

Oral Lichen planus (OLP) or lichen ruber planus is was first described by Wilson in 1869 and affects about 0.5-1% of the population and 2.6% of the Indian population. It is more frequently present in the female population with age usually above 50 years which is inconsistent with the present case. The rate of malignant transformation of OLP is quite low, although erythematous OLP has a higher incidence. The diagnosis of OLP is done on the basis of clinical examination (oral and skin lesions), biopsy and direct immunofluorescence and its management is aimed mainly at palliation of the symptoms. The basic treatment for OLP includes topical and systemic corticosteroids
World Environment Day: Beat Plastic Pollution
Authors: Sahil Thakar
Published: July 2019

Editorial Comment on World Environment Day by Dr. Sahil Thkar, Co-Editor, IHRJ
A Cross-Sectional Study to assess the Oral Mucosal Conditions of Institutionalized Elderly People in India
Authors: Ravneet Randhawa  , Manvir Gill
Published: July 2019

INTRODUCTION: Institutionalized health care is expensive in most of the developing countries such as India. Due to which people residing in old care homes were having higher rate of oral disease.OBJECTIVES: To assess oral mucosal condition of institutionalized elderly people living in India.MATERIALS AND METHOD: A cross sectional survey was conducted among the 8old care homes in India and clinical examination was done to check any mucosal changes of oral cavity among the studied subjects. After the data collection descriptive statistics was done by using SPSS 22.0 version.RESULTS: Majority of the people were having oral mucosal conditions i.e. 31.75% and 26.35 % of the total study participants had OSMF (Oral Submucous Fibrosis) and Denture Stomatitis respectively.CONCLUSION: The present study concludes that oral mucosal condition is relatively poor in institutionalized elderly living
Validitas Tes Keterampilan Berpikir Kritis Remaja (TKBKR) di Universitas Pendidikan Indonesia
Authors: R. Marfu’i Lucky Nindi , Krisnanda Veno D.
Published: July 2019

This study aims to examine the validity of tests of critical thinking skills in adolescents. Validity tested based on; 1) test content, 2) response process, and 3) internal structure. The constructs of Critical Thinking Skills are 23 questions with the correct answer wrong with the answer answers in the form of reasons supporting the correct wrong answers. The subjects in this study amounted to 304 students from six faculties, namely FPMIPA, FIP, FPOK, FPIPS, FPBS, and FPTK at the Indonesian University of Education. The results of the study showed that of the 36 questions there were only 23 questions that could be maintained because 13 questions that had fallen had poor validity and measurement of adolescent critical thinking skills. Based on the results of the validity test of proof of the contents of the language expert, critical thinking experts, and experts in analytical ability mathematically evaluate that this test is feasible to use and the constructed answer key is in accordance with the questions presented. Based on evidences of the internal structure, it is explained that the KMO value of the results of factor analysis shows the number 0.570 with 2 components formed, namely analysis and evaluation capabilities. Suggestions for further research, TKBK has not been tested in its external validity in depth so that there needs to be evidence based on the relationship to other variables and based on the consequences of the test.
Masih Pentingkah UN bagi Siswa? Is UN Still Important for Students?
Authors: Lestari Suci Paramitha , Safari NFN
Published: July 2019

The main purpose of this study is to answer the following question. Is there any influence of junior high school student’s opinion on the importance of the National Examination against the 2018 National Examination results because currently the National Examination is no longer a determinant of graduation? The population of this study was junior high school students participated in the National Examination in 2018. The data in this study were in the form of test scores and students’ answers to questionnaires in 34 provinces throughout Indonesia. Filling out questionnaires was carried out voluntarily on the last day of the National Examination, so the number of respondents filling out the questionnaire was 3.224.331 from 37.859 junior high school students. The number of respondents is the sample in this study. Based on the results of the t-test analysis obtained as follows. The influence of student opinions stating that the UN is important and not important to the 2018 UN results even though the UN is not a determinant of graduation is proven. This means that there is a significant influence (P <0,000) of the student's opinions towards the 2018 National Examination results for subjects: Indonesian, English, Mathematics, and Science, (Sig. 0,000). Most of the SMP / MTs students amount to 199.222 (90.7%) stated that the National Examination was important, while students who stated that the UN was not important were 20.340 (9.3%) students. The conclusion is that there is an influence of the junior high school students’ opinion about the importance of the National Examination towards the 2018 UN results even though the National Examination is not a determinant of graduation.