bluuebunny/crossref_metadata_2025_split huggingface dataset:
Wear and corrosion behavior of coconut shell ash (CSA) reinforced Al6061 metal matrix composites
Authors: Purushothaman Lakshmikanthan , Balakrishnan Prabu 
Published: January 2020

Abstract
The wear and electrochemical corrosion behavior of Al6061-CSA composites with varying weight percentages of CSA reinforcement have been investigated. A pin on disc apparatus was used to characterize the wear resistance of the prepared composite specimens. Open-circuit corrosion potential (OCP) and potentiodynamic polarization measurements (PDP) were used to study the corrosion behavior of prepared Al6061-CSA composites in 3.5 % NaCl solution. The characterization was performed through EDS and SEM. The wear rate of the composites decreased with increase in wt.-% of the CSA. It was observed that with an increase in CSA, the coefficient of friction and friction force of the composites increased. The composites produced have better corrosion resistance than the base matrix aluminum alloy Al6061. The corrosion resistance of the composites starts to increase with an increase in CSA content up to 6 wt.-%, and then it starts decreasing. FSEM and XRD analysis were performed on the morphology of composites in 3.5 % NaCl solution.
STUDI KOMPARATIF: PERBEDAAN STATUS IDENTITAS DIRI REMAJA DITINJAU DARI POLA ASUH ORANGTUA DI UNIVERSITAS X DI JAKARTA
Authors: Appulembang Yeni Anna , Agustina Agustina 
Published: January 2020

Penelitian ini bertujuan untuk mengetahui perbedaan status identitas diri remaja ditinjau dari pola asuh. Subyek yang digunakan adalah remaja yang kuliah di Universitas X di Jakarta dipilih dengan menggunakan Purposive Sampling. Peneliti menggunakan pendekatan kuantitatif komparatif dengan melakukan uji perbedaan. Alat ukur yang digunakan ada dua yaitu pola asuh dan Identitas diri. Berdasarkan hasil pengujian reliabilitas dan validitas maka diperoleh nilai Alpha Cronbach pada pola asuh ayah dimensi acceptance sebesar 0.940 dan pola asuh Ibu sebesar 0.930 dan dimensi demandingness pada pola asuh ayah sebesar 0.825 dan pola asuh ibu sebesar 0.874. Sedangkan pada status identitas identity diffusion sebesar 0.567; identity foreclosure sebesar 0.652; identity moratorium sebesar 0.309 dan identity achievement sebesar 0.674. Analisis data pada penelitian ini menggunakan uji perbedaan Kruskal Wallis dan hasilnya menunjukkan bahwa tidak terdapat perbedaan status identity diffusion, identity moratorium, identity achievement, namun terdapat perbedaan status identity foreclosure ditinjau pola asuh Ayah. Pada pola asuh ibu, ditemukan tidak terdapat perbedaan pada identity diffusion dan identity achievement namun terdapat perbedaan status identity foreclosure dan identity moratorium. Adapun rekomendasi dari penelitian ini adalah orangtua perlu mendampingi anak dalam tahap perkembangannya sehingga anak dapat menentukan status identitasnya.__________________________________________________________The aim of this research to determine differences self identity with parenting style. Subject in this research used adolescences in University X Jakarta using purposive sampling. The study was a quantitative research with design was comparative study. The instrument used was a questionnaire such as Parenting style and Self Identity. The reliability and validity test used Alpha Cronbach and the values was 0.940 for acceptance of father’s parenting style and 0.930 of mother’s parenting style. Otherwhile, 0.825 for demandingness of father’s parenting style and 0.874 of mother’s parenting style. The validity dan reliability of self identity statuse was 0.567 for identity diffusion; identity foreclosure was 0.652; identity moratorium was 0.309 and identity achievement was 0.674. The analysis data used Kruskal Wallis and the result found that there is no difference between self identity in adolescent dimension identity diffusion, moratorium and identity achievement but there is difference between self identity foreclosure with the father’s parenting style. Otherwhile, there is no difference between identity diffusion and identity achievement but there is difference between identity foreclosure and identity moratorium of mother’s parenting style. Recommend of this research to the parents can be monitor the development their children to found their identity statuse.
PELAKSANAAN LAYANAN KONSELING BERBASIS BIRO (STUDI DESKRIPTIF PADA BIRO KONSELING EDUPOTENSIA FOUNDATION BANDUNG)
Authors: Hanifa Hanna Permata , Kusumaningtyas Ratna , Arvianto Resha Yusmar 
Published: January 2020

Kebutuhan akan manfaat pelayanan BK kian dirasakan masyarakat secara luas. Keberadaan BK di Indonesia memang berawal dari dunia pendidikan. Seiring perkembangannya, organisasi biro penyedia jasa layanan BK mulai bermunculan di tengah masyarakat. Namun tidak semuanya asli berlatar belakang lulusan BK, melainkan dari jurusan Psikologi. Keadaan ini mendorong berdirinya organisasi atau yayasan biro penyedia jasa layanan konseling yaitu Edupotensia Foundation. Edupotensia Foundation memberikan layanan Konseling yang dilakukan langsung oleh konselor profesional dan lulusan BK sendiri. Kegiatan konseling berbasis biro bagi perkembangan dunia konseling di Indonesia menjadi hal baru yang harus terus dikembangkan. Penelitian ini menggunakan metode kualitatif dengan alat pengumpulan data berupa wawancara mendalam guna mendapatkan informasi secara rinci. Hasil yang didapat melalui penelitian ini adalah pelaksanaan konseling oleh Edupotensia Foundation dilakukan sesuai dengan prinsip, fungsi dan asaz konseling, berfokus pada pendekatan CBT, SFBT dan Life-Choaching. Selain itu, Edupotensia Foundation juga memberikan workshop pengembangan kompetensi konseling dan beragam pelatihan yang sesuai._______________________________________________________________ The need for benefits from Guidance and Counseling services is increasingly felt by the community at large. The existence of Guidance and Counseling in Indonesia does start from the world of education. Along with its development, the bureau organization of Guidance and Counseling service providers began to appear in the community. However, not all of them are from Guidance and Counseling background, but from the Department of Psychology. This situation encourages the establishment of a bureaus organization or foundation for counseling service providers namely Edupotensia Foundation. Edupotensia Foundation provides Counseling services conducted directly by professional counselors and Guidance and Counseling graduates themselves. Bureau-based counseling activities for the development of the world of counseling in Indonesia are new things that must continue to be developed. This study uses qualitative methods with data collection tools with in-depth interviews to obtain detailed information. The results obtained through this study are that the implementation of counseling by the Edupotensia Foundation is carried out in accordance with the principles, functions and counseling, focusing on the CBT, SFBT and Life-Choaching approaches. In addition, the Edupotensia Foundation also provides counseling competency development workshops and a variety of appropriate training.
Internalization of Value System in Mineral Materials Management Policies Instead of Metal And Rocks in Merauke District
Authors: MATURBONGS Edoardus , SUWITRI Sri , KISMARTINI Kismartin , PURNAWENI Hartuti 
Published: January 2020

Public policy public comes from the existing problems in the community, so that policy objectives realized. Value systems as part of people's lives need to get places in the policy process, among others related to environmental management policies. As long as it is not metal minerals mining and rock in Merauke District, Papua Province, the mining generally leads to environmental damage, necessitating noteworthy local wisdom values as a value system in order to prevent damage to a sustainable environment. This research aims to analyze the value system of the local communities of Marind area can be internalised into the policy management of mineral ingredients instead of metal and rocks in Merauke District. Research methods are using qualitative approach. Data collected through interviews, documentation and further analyzed using observation and data analysis components from Milles, Huberman and SaldaÃ±a. The results showed that one of the value systems in society of Marind area such as Sasi i.e. Prohibition of entering a closed area in the customs, have sanctions for those who break them decisively, so internalization of Sasi as a value system culture in environmental protection needs implemented. It is particularly in the order of mineral material management policies instead of metal and rocks in Merauke District.
Key words: Value System, Sasi, Environment Condition, Policy, Mining Activity.
PERBEDAAN TEKNIK KASTRASI TERHADAP BOBOT BADAN, PANJANG DAN VOLUME SKROTUM PADA SAPI BALI
Authors: Priyanto Langgeng , Abrar Arfan , Muslim Gatot 
Published: January 2020

ABSTRAKPenelitian ini bertujuan mengamati perbandingan teknik kastrasi pada caudal dan vas deferent terhadap bobot badan, panjang dan volume skrotum pada sapi Bali. Penelitian ini dilaksanakan pada bulan Juni sampai Agustus 2016 dilaksanakan dikandang percobaan Jurusan Peternakan, Fakultas Pertanian, Universitas Sriwijaya. Metode penelitian menggunakan 6 ekor sapi Bali dibagi menjadi dua teknik, Pertama 3 ekor sapi yang dikastrasi dengan teknik pemotongan pada caudal (P0) dan kedua 3 ekor sapi yang dikastrasi dengan teknik pemotongan pada vas deferent (P1) metode statistik yang digunakan adalah uji T-Test. Hasil penelitian menunjukan adanya perbedaan bobot badan pada kedua metode teknik kastrasi pada caudal maupun pada vas deferent, sedangkan pada panjang dan volume skrotum tidak memberikan perbedaan yang secara signifikan terhadap perlakuan kedua metode kastrasi baik pada caudal maupun vas deferent.Kata Kunci: Sapi Bali, Kastrasi, Bobot Badan, Caudal, Vas Deferent, Skrotum. ABSTRACT This research aims was to study comparison orchiectomy techniques on caudal and vas deferent on body weight, the length and volume scrotum in Bali cattle. This research was conducted in June to August 2016 held in Animal Farm of Animal Science, Faculty of Agriculture, Sriwijaya University. The research method used 6 Bali cattle is divided into two techniques, first 3 cattle orchiectomy with technique of cutting in the caudal (P0) and second 3 cattle orchiectomy with technique of cutting in the vas deferent (P1) were applied in analyzes this research by using T-Test statistic method. The result showed differences in body weight between orchiectomy on the caudal and vas deferent, whereas on the length and volume of the scrotum did not give a significant difference to the treatment of orchiectomy between on the caudal and vas deferent.Keywords: Bali Cattle, Orchiectomy, Body Weight, Caudal, Vas Deferent, Scrotum.
Molas, Isidre & Pitarch, Ismael E.: «Las Cortes Generales en el Sistema Parlamentario de Gobierno» (Recensión)
Authors: Montejo Velilla Salvador 
Published: January 2020

Recensión sobre la obra: Isidre Molas e Ismael E. Pitarch. Las Cortes Generales en el Sistema Parlamentario de Gobierno. Tecnos. Madrid, 1987, 243 págs.
A Key Institution for Writing the Economic and Political History of Ottoman Muslims in the Early Modern Period
Authors: Spyropoulos Y. 
Published: January 2020

Abstract This articles main argument is that in the course of the eighteenth century, the Janissary corps evolved into a powerful platform for the exchange of people, goods, and ideas between different localities covering a vast geographical area. By elaborating on this idea this paper maintains that the Janissaries should be treated as a key institutionfor the examination of Muslim economic and political history in the Ottoman periphery.We claim thatthe studyof their networkshas the potential to drastically redefine our current perception of the sociopolitical and financial role of Muslims in the early modern Ottoman Empire.Such a research can help us create a more balanced and less Eurocentric picture of the trading operations of Muslims in the regionand better understandthe dissemination of ideas and political movements between a number of Muslim communities where the Janissaries had a strong presence.Аннотация Главныи тезис статьи то, что на протяжении XVIII века, корпус янычар эволюционировал в мощную платформу перемещения людеи, товаров и идеи между различными регионами обширного географического пространства. Обосновывая эту идею, автор статьи подчеркивает, что янычары как институт являются своеобразным ключом к исследованию экономическои и политическои истории исламских общин на периферии Османскои империи. На взгляд автора, исследование этих сетеи взаимодеиствия позволяет радикально пересмотреть нынешнее восприятие социополитическои и финансовои роли мусульман в Османскои империи раннего Нового времени. Подобные исследования дают возможность выработать более сбалансированную и менее евроцентричную картину мусульманских торговых операции в регионе, и лучше понять распространение идеи и политических движении среди различных исламских общин в тех регионах, где присутствие янычар было значимым.
ТИПОЛОГІЗАЦІЯ КУЛЬТУРИ: КОНЦЕПТУАЛЬНІ ПІДХОДИ
Authors: Петруня-Пилявська Наталія 
Published: January 2020

Проаналізовано, що типологізація культури є розгляд культури та її специфічні культурологічні підходи відповідно до її внутрішньої динаміки та історичного розвитку, класифікаційні особливості, розподілу за типами культур людської цивілізації. Простежено, що процедура типологізації культур залежить від обраного критерію, тому теорія культури може запропонувати різноманітні варіанти класифікацій. Виділено такі типи культур: етнічна культура, з розглядом дефініції «етнічність». Показано, що етнічна культура найбільше виявляється у таких сферах, як природна, або національна, мова, а також в певному порядку побуту, у повсякденній поведінці, в традиціях, звичаях, віруваннях, типових ментально-психологічних рисах її носіїв. Зроблено висновок, що вищою формою етнічності в сучасному світі є нація і що на фундаменті етнічної спільності часто виникають національні культури. Доведено, що національна культура вміщує всю сукупність цінностей, норм, звичаїв, вірувань людей, що належать до однієї нації, тобто тих, хто має територіальну, господарську, ментальну і мовленнєву спільність. Простежено, що концептуальним підходом у типологізації культури є загальновизнана основа для об’єднання культур у групи, якою слугує поняття «культурна епоха». Зіставлено формалізаційний і цивілізаційний підходи у типологізації культур. Доведено, що цивілізаційний підхід у типологізації культур розрізняє окремі цивілізації за такими характерологічними критеріями, як історичний період, географічний простір, провідна технологія виробництва, політичні відносини, специфіка духовного життя. Проаналізовано, що загальновизнаною в теорії культури є історична типологізація культур, концептуальним підходом якої є класифікація за історичним типом із подальшими узагальненнями, виокремленнями типових груп і тенденцій розвитку.
Maximal Fillings of Moon Polyominoes, Simplicial Complexes, and Schubert Polynomials
Authors: Serrano Luis , Stump Christian 
Published: January 2020

We exhibit a canonical connection between maximal $(0,1)$-fillings of a moon polyomino avoiding north-east chains of a given length and reduced pipe dreams of a certain permutation. Following this approach we show that the simplicial complex of such maximal fillings is a vertex-decomposable, and thus shellable, sphere. In particular, this implies a positivity result for Schubert polynomials. Moreover, for Ferrers shapes we construct a bijection to maximal fillings avoiding south-east chains of the same length which specializes to a bijection between $k$-triangulations of the $n$-gon and $k$-fans of Dyck paths of length $2(n-2k)$. Using this, we translate a conjectured cyclic sieving phenomenon for $k$-triangulations with rotation to the language of $k$-flagged tableaux with promotion.
The Effect of Random Edge Removal on Network Degree Sequence
Authors: DuBois Thomas , Eubank Stephen , Srinivasan Aravind 
Published: January 2020

Many networks arise in a random and distributed fashion, and yet result in having a specific type of degree structure: e.g., the WWW, many social networks, biological networks, etc., exhibit power-law, stretched exponential, or similar degree structures. Much work has examined how a graph's degree-structure influences other graph properties such as connectivity, diameter, etc. Probabilistic edge removal models link failures, information spreading, and processes that consider (random) subgraphs. They also model spreading influence of information as in the independent cascade model. We examine what happens to a graph's degree structure under edge failures where the edges are removed independently with identical probabilities. We start by analyzing the effect of edge failure on the degree sequence for power-law and exponential networks, and improve upon results of Martin, Carr & Faulon and Cooper & Lu; then, using intuition from the power-law case, we derive asymptotic results for almost any degree sequence of interest. Our major result shows a classification of degree sequences which leads to simple rules that give much of the new expected degree sequence after random edge-removal; we also provide associated concentration bounds.
On the Ramsey Number $R(4,6)$
Authors: Exoo Geoffrey 
Published: January 2020

The lower bound for the classical Ramsey number $R(4,6)$ is improved from 35 to 36. The author has found 37 new edge colorings of $K_{35}$ that have no complete graphs of order 4 in the first color, and no complete graphs of order 6 in the second color. The most symmetric of the colorings has an automorphism group of order 4, with one fixed point, and is presented in detail. The colorings were found using a heuristic search procedure.
An Extension Theorem for Terraces
Authors: Ollis Matt , Willmott Devin 
Published: January 2020

We generalise an extension theorem for terraces for abelian groups to apply to non-abelian groups with a central subgroup isomorphic to the Klein 4-group $V$. We also give terraces for three of the non-abelian groups of order a multiple of 8 that have a cyclic subgroup of index 2 that may be used in the extension theorem. These results imply the existence of terraces for many groups that were not previously known to be terraced, including 27 non-abelian groups of order 64 and all groups of the form $V^s \times D_{8k}$ for all $s$ and all $k > 1$ where $D_{8k}$ is the dihedral group of order $8k$.
The Number of Ways to Assemble a Graph
Authors: Vince Andrew , Bóna Miklós 
Published: January 2020

Motivated by the question of how macromolecules assemble,the notion of an assembly tree of a graph is introduced. Given a graph $G$, the paper is concerned with enumerating the number of assembly trees of $G$, a problem that applies to the macromolecular assembly problem. Explicit formulas or generating functions are provided for the number of assembly trees of several families of graphs, in particular for what we call $(H,\phi)$-graphs. In some natural special cases, we use a powerful recent result of Zeilberger and Apagodu to provide recurrence relations for the diagonal of the relevant multivariate generating functions, and we use a result of Wimp and Zeilberger to find very precise asymptotic formulae for the coefficients of these diagonals. Future directions for reseach, as well as open questions, are suggested.
Oriented Hypergraphs: Introduction and Balance
Authors: Rusnak Lucas J. 
Published: January 2020

An oriented hypergraph is an oriented incidence structure that extends the concept of a signed graph. We introduce hypergraphic structures and techniques central to the extension of the circuit classication of signed graphs to oriented hypergraphs. Oriented hypergraphs are further decomposed into three families—balanced, balanceable, and unbalanceable—and we obtain a complete classification of the balanced circuits of oriented hypergraphs.
Rational Associahedra and Noncrossing Partitions
Authors: Armstrong Drew , Rhoades Brendon , Williams Nathan 
Published: January 2020

Each positive rational number $x>0$ can be written uniquely as $x=a/(b-a)$ for coprime positive integers $0<a<b$. We will identify $x$ with the pair $(a,b)$. In this paper we define for each positive rational $x>0$ a simplicial complex $\mathsf{Ass}(x)=\mathsf{Ass}(a,b)$ called the rational associahedron. It is a pure simplicial complex of dimension $a-2$, and its maximal faces are counted by the rational Catalan number $$\mathsf{Cat}(x)=\mathsf{Cat}(a,b):=\frac{(a+b-1)!}{a!\,b!}.$$The cases $(a,b)=(n,n+1)$ and $(a,b)=(n,kn+1)$ recover the classical associahedron and its "Fuss-Catalan" generalization studied by Athanasiadis-Tzanaki and Fomin-Reading. We prove that $\mathsf{Ass}(a,b)$ is shellable and give nice product formulas for its $h$-vector (the rational Narayana numbers) and $f$-vector (the rational Kirkman numbers). We define $\mathsf{Ass}(a,b)$ via rational Dyck paths: lattice paths from $(0,0)$ to $(b,a)$ staying above the line $y = \frac{a}{b}x$. We also use rational Dyck paths to define a rational generalization of noncrossing perfect matchings of $[2n]$. In the case $(a,b) = (n, mn+1)$, our construction produces the noncrossing partitions of $[(m+1)n]$ in which each block has size $m+1$.
Semiarcs with Long Secants
Authors: Csajbók Bence 
Published: January 2020

In a projective plane $\Pi_q$ of order $q$, a non-empty point set $\mathcal{S}_t$ is a $t$-semiarc if the number of tangent lines to $\mathcal{S}_t$ at each of its points is $t$. If $\mathcal{S}_t$ is a $t$-semiarc in $\Pi_q$, $t<q$, then each line intersects $\mathcal{S}_t$ in at most $q+1-t$ points. Dover proved that semiovals (semiarcs with $t=1$) containing $q$ collinear points exist in $\Pi_q$ only if $q\leq 3$. We show that if $t>1$, then $t$-semiarcs with $q+1-t$ collinear points exist only if $t\geq \sqrt{q-1}$. In $\mathrm{PG}(2,q)$ we prove the lower bound $t\geq(q-1)/2$, with equality only if $\mathcal{S}_t$ is a blocking set of Rédei type of size $3(q+1)/2$.We call the symmetric difference of two lines, with $t$ further points removed from each line, a $V_t$-configuration. We give conditions ensuring a $t$-semiarc to contain a $V_t$-configuration and give the complete characterization of such $t$-semiarcs in $\mathrm{PG}(2,q)$.
Small Regular Graphs of Girth 7
Authors: Abreu M. , Araujo-Pardo G. , Balbuena C. , Labbate D. , Salas J. 
Published: January 2020

In this paper, we construct new infinite families of regular graphs of girth 7 of smallest order known so far. Our constructions are based on combinatorial and geometric properties of $(q+1,8)$-cages, for $q$ a prime power. We remove vertices from such cages and add matchings among the vertices of minimum degree to achieve regularity in the new graphs. We obtain $(q+1)$-regular graphs of girth 7 and order $2q^3+q^2+2q$ for each even prime power $q \ge 4$, and of order $2q^3+2q^2-q+1$ for each odd prime power $q\ge 5$. A corrigendum was added to this paper on 21 June 2016.
The Generating Function for Total Displacement
Authors: Guay-Paquet Mathieu , Petersen Kyle 
Published: January 2020

In a 1977 paper, Diaconis and Graham studied what Knuth calls the total displacement of a permutation $w$, which is the sum of the distances $|w(i)-i|$. In recent work of the first author and Tenner, this statistic appears as twice the type $A_{n-1}$ version of a statistic for Coxeter groups called the depth of $w$. There are various enumerative results for this statistic in the work of Diaconis and Graham, codified as exercises in Knuth's textbook, and some other results in the work of Petersen and Tenner. However, no formula for the generating function of this statistic appears in the literature. Knuth comments that "the generating function for total displacement does not appear to have a simple form." In this paper, we translate the problem of computing the distribution of total displacement into a problem of counting weighted Motzkin paths. In this way, standard techniques allow us to express the generating function for total displacement as a continued fraction.