bluuebunny/crossref_metadata_2025 huggingface dataset:
A comparative study of mating and copulatory mechanics in Hippeutis complanatus and Segmentina oelandica (Gastropoda: Pulmonata)
Authors: Soldatenko E.V. , Petrov A.A.
Published: August 2019

Recent studies on mating and copulation in pulmonates have provided a better understanding of a functional relationship between various aspects of their biology and have greatly advanced our knowledge of their reproductive behaviour. Here we describe the mating behaviour, copulatory mechanics and genital anatomy of Hippeutis complanatus (Linnaeus, 1758), a Palaearctic freshwater pulmonates, and compare these results with those from Segmentina oelandica (Westerlund, 1885). In H. complanatus, the individual that initiates mating mounts the shell of the partner and crawls over its basal side to position itself at the shell aperture for intromission. The copulatory connection is achieved by the preputium and its musculo-glandular appendage (preputial organ) that attaches to the shell of the partner. Hippeutis complanatus and S. oelandica share a number of common traits in genital morphology and mating behaviour, most notably the unilateral copulation and the use of the preputial organ as a holdfast. These species also show some significant differences: the opposite orientation of the partners, chemical stimulation in S. oelandica and a significantly longer mating duration in H. complanatus. Overall, the mating behaviour of the two species shows a combination of shared and divergent traits that have potential of being useful as taxonomically informative characters.
First records of the tropical bed bug Cimex hemipterus (Heteroptera: Cimicidae) from Russia
Authors: Gapon D.A.
Published: August 2019

The tropical bedbug Cimex hemipterus (Fabricius, 1803) was found for the first time in Russia: in many districts of Moscow in 2015–16, in four districts of St Petersburg, in Moscow Prov., Smolensk and Saransk in 2016. Unusual activity during daytime in autumn was characteristic of individuals of this species in different places of St Petersburg. C. lectularius Linnaeus, 1758 was absent in St Petersburg and Moscow in places where C. hemipterus was found, and apparently the former species is displaced by the latter. In all localities, C. hemipterus is resistant to insecticides used for controlling C. lectularius. It may be expected that C. hemipterus will overwinter successfully in heated facilities in Russia and spread to other regions where it can displace C. lectularius.
Perlindungan Hukum Terhadap Pihak Ketiga Sebagai Pemilik Alat Berat Yang Digunakan Dalam Melakukan Tindak Pidana Perambahan Hutan
Authors: Sipayung Erlita , Pakpahan Kartina , Widiyani Heni , Devi Nelly Sri
Published: August 2019

Abstract

Forests are the lungs of the earth that produce huge amounts of oxygen that humans need to live. But at this time there are many criminal acts of forest encroachment that are carried out irresponsibly, so that it harms many parties such as third parties as owners of heavy equipment used to commit acts of forest encroachment. Article 78 paragraph (15) of Law Number 41 of 1999 concerning Forestry which stipulates that all forest products and proceeds of crime, violations or transportation equipment used to commit crimes or violations will be confiscated for the State. From this article, injustice arises for third parties who have heavy equipment when renting to others because their heavy equipment is seized by the State. Because the third party only rents the heavy equipment to other people without knowing that the person who hired uses it for a crime. This study uses a normative juridical method with library research data collection techniques, qualitative data analysis using inductive deductive methods. The legal action that can be taken by a third party is to object to the seizure placed on the object or object belonging to a third party as long as the case against it has not yet had a decision that has permanent legal force. By taking legal action against third parties to recover their property that was confiscated based on a decision concerning evidence of a crime which was considered relevant enough to provide justice to a third party.
Проблема частиномовної класифікації в сучасному мовознавстві
Authors: Боровська Олена , Підпала Вікторія
Published: August 2019

Introduction. All words of a language are divided into classes which are called parts of speech. Parts of speech are the main component of the morphological level in the language system and the starting point for any research. The concept of the speech parts as an objective grammatical classification of words is valuable for economical and adequate language descriptions. Moreover, parts of speech are an important source of human cognitive activity and means of categorization. The reference to a certain lexical-grammatical class determines the peculiarities of a language unit in speech, hence it demonstrates the importance of the parts of speech classification in the teaching of foreign languages. In this respect the controversial issues of the part of speech theory are considered to be one of the main tasks of modern linguistics. The polyfunctional and syncretic character of some words contributes to the complexity of creating a universal part of speech theory.Purpose. The aim of this study was to analyze the solving of the speech parts’ differentiation and to outline the prospects of this theory.Methods. The issue of the speech parts classification has been examined in detail by means of the inductive and deductive methods for analyzing and synthesizing scientific theories and concepts.Results. The modern linguistics focuses on the description of the speech parts in different languages and on the search for grammatical features and oppositions that characterize speech parts for different language types. The aim of the modern grammatical theory is to reveal the universal component and to explain its existence. The universal character of the speech parts can be outlined as follows: a) the text of any language is segmented into parts which can be correlated with the word; b) these parts differ from each other; and c) all these parts are determined by the affinity of human thinking.In the parts of speech theory there is a row of controversial aspects: the number of speech parts; units that are classified as parts of speech; the main property (grammatical, lexical-grammatical or semantic) of a part of speech; the hierarchy of parts of speech; and the reference of some words to a certain part of speech.Conclusion. The prospects of the part of speech theory are in the recognition of their universal character, in the consideration and differentiation of syncretic units and words.
La pharmacologie des antibiotiques dans le liquide cérébrospinal
Authors: Le Tilly O. , Bretonnière C. , Grégoire M.
Published: August 2019

Le liquide cérébrospinal (LCS) est produit par les plexus choroïdes des ventricules cérébraux avec pour rôle de protéger le système nerveux central des agressions mécaniques (chocs) et infectieuses (virus, bactéries, parasites) et de lui apporter des nutriments essentiels à son fonctionnement optimal. Il est anatomiquement à l'interface entre le compartiment sanguin, le liquide interstitiel cérébral et le compartiment lymphatique. Sa composition est fortement influencée par ces structures. Deux barrières permettent de réguler le passage moléculaire dans le système nerveux central et limitent fortement l'accès à ce dernier : la barrière hématoencéphalique et la barrière hématoméningée. La diffusion des antibiotiques dans le LCS, mais également dans le parenchyme cérébral dépend de plusieurs facteurs : la taille de la molécule, sa lipophilie, la liaison aux protéines plasmatiques et l'intégrité des barrières hématoencéphalique et hématoméningée. Les phénomènes d'inflammation méningée observés dans les méningites bactériennes augmentent la perméabilité des barrières et facilitent la diffusion des agents antibiotiques. Les molécules diffusant le mieux dans le LCS sont les fluoroquinolones, le linézolide, l'association triméthoprime- sulfaméthoxazole, la rifampicine et la fosfomycine. Les bêtalactamines présentent une diffusion assez faible mais qui augmente fortement en cas d'inflammation méningée. Des posologies journalières très élevées permettent de contourner l'écueil de la diffusion. De nombreux paramètres influencent la diffusion des antibiotiques dans le LCS. Le choix de l'antibiothérapie adaptée se fait en fonction de ces paramètres et du type d'infection à traiter en concertation pluridisciplinaire.
ARCHITECTURE OF THE FIRST HIGH SCHOOLS IN TOMSK LATE IN THE 19th CENTURY
Authors: Fadeev K. V.
Published: August 2019

The article deals with the history of the emergence and development of the first high schools in Tomsk. The architectural aspect associated with the provision of the high schools with their own buildings adapted to the educational process is described, which, in turn, affected the formation of the architectural appearance of Tomsk.

Late in the 19th century, eclecticism characterized by a mixture of different styles, became the dominant architectural trend in the appearance of buildings in Tomsk. One of the trends in eclecticism was the brick style, according to which the educational institutions were built most of all, including the Mariinsky women's and provincial men's high schools.

The relevance of the study is conditioned by the problems of preserving the architectural heritage of the second half of the 19th century in relation to the historical center of the city, which is an important cultural and educational factor.

The purpose of this work is to study the brick style architecture of the first high schools in Tomsk. The study is based on the principles of historicism and objectivity. The specific historical methods include a study of bibliographic and comparative sources and methods of architectural analysis of the cultural objects.

It is shown that the activities of a number of architects resulted in a unique architectural heritage of the 19th century, forming the architectural appearance of the historical part of Tomsk. The results of this study are reported at the meeting of Pushkin Historical Society.
CONCEPTUAL MODEL OF FUNCTIONAL ZONING OF TEMPORARY RESIDENCE IN THE ARCTIC REGIONS OF RUSSIA
Authors: Tokarev A. E.
Published: August 2019

Purpose: The aim of this work is to study the environmental issues of northern urban planning and create a conceptual model of the functional zoning of the temporary residence module for the Far North. The purpose includes summary of the problems and threats of protected natural areas, namely the Arctic National Park of Russia; a study of the main historical town-planning of the ideal cities, clarification of aspects of the modern city planning in extreme conditions ; the analysis of the conceptual project “Cities of the Future”, in which the environmental problem is the main requirement for the artificial environment for human life; a description of urban planning principles and space-planning decisions of existing camps in the north of Russia and reveal the significant shortcomings of construction in these conditions ; formulation and systematization of specific requirements for the modern architecture of temporary Arctic settlements; propose a conceptual model of functional zoning of a temporary residence module in the Far North regions.

Research findings: A new composition of the Arctic module for temporary residence of the 21st century is considered. A list and zoning scheme of the main and auxiliary premises, united by functional zones is discussed. The requirements for residential, public and technical spaces of the complex are defined and formulated.

Practical implications: The proposed temporary residence modules can be used for Arctic regions of Russia. The functional zoning will allow to create a spatial environment of autonomous bioclimatic temporary residence module for the Russian Arctic National Park.
An Investigation of the Effects of the Official Development Assistance on GDP Per Capita in Pakistan
Authors: Tariq Muhammad , Jehangir Muhammad , Ali Hussain
Published: August 2019

The paper investigates the influence of official development support on Pakistan GDP per capita making use of time series yearly data from 1991 to 1917. ADF has been used for examining the level of integration of the data. After that, ARDL has been used for discovering the short and long-run relationship of the official development assistance and the GDP per capita. The results uncover that official assistance relationship with GDP per capita became negative in the short run in addition to a long-run period. In similar manner inflation also became negatively significant in the short and long run. Additionally, lag GDP per capita is positively significant. Population growth turned positively significant in the long run. In addition, it has become negatively significant in the short-run period of time. Furthermore, the Error Correction coefficient is –0. 83% and remained significant
The Ignored Skill in EFL Context “Listening”: A Review of Selected Article by Omar Gokhan Ulum
Authors: Yunira Sandra
Published: August 2019

This paper aimed at reviewing the selected article entitled “The ignored Skill in EFL Context” written by Omer Gokhan Ulum. This study sees Ulum’s article as a unique study and essential to explore the difficulties of listening comprehension faced by students of the first-year university with elementary level English. Ulum’s research involved 50 EFL students from three different classes. The data was accumulated by interview and a set of questions. The outcome of the study showed that EFL students find it hard to understand the listening when people speak with numerous and uncommon accents. Also, the students do not have the skill to understand the meanings of words which are not pronounced accurately. This present study concluded that the students’ inability to quickly memorize the words or sentences that they have just overheard is highly likely to be the reason why the listening skill is considered as an ‘annoyance’ for the EFL students in the study. These results may help EFL teachers in boosting students’ listening comprehension skills. As an outcome, this present paper may say that Ulum’s article can be replicable onto similar research topics, especially on the methodology section.
ANALISIS KUALITAS LAYANAN PERPUSTAKAAN FAKULTAS PERTANIAN UNIVERSITAS PADJADJARAN DENGAN MENGGUNAKAN METODE LIBQUAL+TM
Authors: Laksana Surya Yoga , Rachmawati Tine Silvana , Yanto Andri
Published: August 2019

The purpose of the research is to analyze and determine the level of service quality of FAPERTA Library (Faculty of Agriculture) Padjadjaran University. The research method used in this research is descriptive survey method with a quantitative approach. The research instrument used to measure the level of service quality of FAPERTA Library of Padjadjaran University is LibQual+TM method. LibQual+TM method is a method that measures the level of service quality of a library based on three main dimensions are Affect of Service, Information Control, and Library as Place. The LibQual+TM method and perceived score, find out the service quality of Faculty of Agriculture Library, there is a gap between minimum expectation and actual (desired) expectation. Data collection of this research done by distributing questionnaires, observation, and interview. The results of the research show the quality of FAPERTA Unpad Library services for each measurement dimension LibQual+TM shows the service quality of FAPERTA Unpad Library is unpleasant. It indicates a lower user perception of what he or she is keeping before visiting the library.
Theoretical Perspectives of Discursive Phenomena: DA and Ethnomethodologically DA
Authors: Sihombing Indri C.
Published: August 2019

The aims of this paper try to discuss and present various theoretical perspectives of discursive phenomena, in specific the different research techniques widely known as, as well as the theories. Having presented the main assumptions of the approach the paper, then discusses and analyze discursive interactions’ phenomena, technologically mediated interaction or face-to-face. By concentrating on the pragmatic aspects of discourse, an ethnomethodologically approach of Discourse Analysis (DA), this paper may contribute important ideas and information in media interaction studies.
Simple solutions to the wave problem on the surface of a fluid with the linear hydroelastic model
Authors: Dobrokhotov S. Yu. , Il’yasov Kh. Kh. , Sekerzh-Zen’kovich S. Ya. , Tolstova O. L.
Published: August 2019

The problem of generation of waves on the surface of a water layer placed on an elastic base is considered. It is assumed that the generating source is located inside the elastic half-space. The Podyapolskii approach is used which is based on study of the solutions to the common linear system of equations of the theory of elasticity in the half-space and the theory of water waves linked at the interface by the corresponding boundary conditions. The previously obtained simplified dispersion relation for the water mode with account for the elastic base effect is used to derive a simple integral formula which associates the initial perturbation of a special kind in the elastic half-space and the amplitude of the surface water waves generated by this source. The obtained solutions are compared with the solutions based on the well-known piston model of long wave generation.
New method for synthesis of fine crystalline magnesium aluminate spinel
Authors: Panasyuk G. P. , Kozerozhets I. V. , Danchevskaya M. N. , Ivakin Yu. D. , Muravieva G. P. , Izotov A. D.
Published: August 2019

A new method for the synthesis of high-purity fine-crystalline aluminum-magnesium spinel MgAl2O4 was been proposed. The procedure includes treatment of mixture finely dispersed MgO and hydroxide Al(OH)3 or aluminum oxyhydroxide AlOOH by water fluid under supercritical conditions (T = 380-400 °С, PH2O =  22,8-23,0 MPa). It was been shown that the process of formation of the structure of aluminum-magnesium spinel proceeds through a solid-phase mechanism. By varying the conditions of synthesis, the new method of synthesis allows to adjust the size (from 20 nm to 5 µm) and shape (spherical, lamellar, bipyramidal) of particles of synthesized aluminum-magnesium spinel MgAl2O4.
Morphometry of the relief and debris flow features on the northern slope of the Great Caucasus
Authors: Karavaev V. A. , Seminozhenko S. S.
Published: August 2019

The morphometric indicators of the relief significantly affect the debris flow features in the mountains. The key characteristics are the angles of inclination and height, and when considering heights in the first place we pay attention not to their absolute values, but to the nature of the distribution. In the presented study, the analysis of the numerical values of these two indicators for the Western, Central and Eastern Caucasus was carried out on the basis of the original digital model of the relief. The average value of the tilt angles in the Western Caucasus is 0,5° more than in the Central and Eastern, which contributes to more active debris flows. On the other hand, the Western Caucasus is distinguished by smaller elevation differences. From the position of this factor, the Central Caucasus is the most dangerous. Thus, the nature of the distribution of absolute altitudes, along with high forestation, neutralizes the factor of more significant angles of inclination of surfaces and causes less debris flow danger in the Western Caucasus relative to the Central and Eastern.
Experimental study of the European river lamprey Lampetra fluviatilis (L.) downstream migrating smolts rheoreaction under various illuminations
Authors: Zvezdin A. O. , Pavlov D. S. , Tsimbalov I. A. , Kucheryavyy A. V.
Published: August 2019

Rheoreaction of the downstream migrating smolts of the European river lamprey was studied in the experimental conditions at illuminations of day and night intensity. It was found that at the daytime the smolts are mostly dormant and if move downstream then in active-passive form (with the head against the stream, and their speed going beyond the velocity). This data is well within the findings on the night downstream migration of the smolts during the 24 h period in natural conditions. Thus, the downstream migration of the smolts has an active form.
Building a developmental state in Vietnam in the process of integrating into the ASEAN economic community
Authors: Nga Nguyen Hong
Published: August 2019

Vietnam has been exposed to various advantages and challenges since becoming a member of the AEC.This context requires innovation in the state's perception of governing, regulating and operating the country. In the contemporary stage, the developmental state model isof pivotal importance and necessity to the efforts of achieving the national goals ofprosperous people and a strong, democratic, equitable, and civilized country. This paper discusses concepts, roles and basic functions of a state, and analyzes key aspects of the formation ofa developmental state. Special focus is onthe state's market failure correcting role, its non-competitive nature, and the state that does not act for markets. The ultimate goals of the developmental state is to ensure the rights to live, liberties, and wealth of individuals. The concept of the developmental state wasfirst developed by Chalmers Ashby Johnson (1982). The developmental role of the state is centered on improvingits competence to promote market activities by means of ensuring public security, lessening uncertainty in the economy, mitigating asymmetricinformation, reducing transaction costs, etc. for markets. Finally, we suggest a package of seven solutions to the formation of a developmental government in Vietnam.
Изучение их свойств комплексов кислот на основе компонентов корня жузгуна
Authors: Райханова Р , Ташенов А , Омарова Н
Published: August 2019

Жузгун – это уникальное пустынное растение, содержащее в себе множествовеществ, используемых в лекарственных целях – алкалоиды, флаваноиды, фенолкарбоновыекислоты, лейкоантоцианидины и другие вещества. Основной компонент корня Calligonum (жузгуна) - кислота глицирризиновая - обладает собственной противовируснойактивностью, основанной на индуцировании образования интерферона. В статье отраженырезультаты исследования комплексного соединения глицирризиновой кислоты с ремантадином– противогриппозным препаратом.Получены новые комплексные соединения: кислотыглицирризиновой (КГ) с ремантадином — каллитадин; кислоты 18-дегидроглицирретовой (К18-ДГЛ) с ремантадином - каллиримант. Установлена структура полученных комплексныхсоединений с помощью ИК- и ЯМР-спектроскопии. В спектрах полученных соединенийобнаружено наличие полос поглощения, относящиеся к протонированной аминогруппе ( NH+3).У данных соединений обнаружена выраженная активность в отношении вируса гриппаА и умеренная в отношении вируса гриппа В, тогда как ремантадин активен только вотношении вируса гриппа А. Отличительной особенностью комплексных соединений другот друга является то, что каллитадин по противовирусной активности незначительноуступает каллириманту, но по снижению острой токсичности и гепатотоксичности превышаетпоследний. В дальнейшем планируются исследования каллитадинана гематопротекторнуюактивность.
Scientific - educational process and the research direction of the department of physical and economic geography
Authors: Dzhanaleeva G , Berdenov Zh
Published: August 2019

The work describes the history of education and the consistent formation of thedepartment of physical and economic geography of Eurasian National University named afterL.N.Gumilyov. The article presents the scientific school and the scientific direction of the department, the main scientific works of the teaching staff of the department. The work reflects thescientists who took an active part in the concept of development of the educational program offuture specialists - geographers.
Immediate effects of Physiotherapy v/s Yoga therapy on Symptoms of Dysmenorrhea
Authors: Sharma Urvashi , Gurprasad Padmaja
Published: August 2019

Background Dysmenorrhea is defined as the cramping pain accompanying menstruation. It is further classified into two types based on pathophysiology write one line about the types Primary dysmennorhea is widely prevalent in the general population. More than 50% of teenagers and 30-50% of menstruating women suffer from varying symptoms, such as, uterine cramps, nausea,backache, diarrhoea, giddiness, syncope and fainting. (1). Apart from pharmacological treatment physical exercises have been suggested as non pharmacological treatment. It is seen that exercises have analgesic effect in a non specific way. Various forms of exercise (for.eg. Yoga and physiotherapy) have shown different results in pain relief and premenstrual syndrome. Exercise have been shown as preventive measures as well. K taping is considered as an adjunct to physiotherapy treatment. (1) OBJECTIVES: 1. To assess the effectiveness of yoga poses along with k-taping in primary dysmenorrhea. 2. To assess the effectiveness of physiotherapy exercises along with k-taping in primary dysmenorrhea. 3. To compare the effectiveness of yoga poses v/s physiotherapy exercises along with kinesio taping (KT) in primary dysmenorrhea MATERIALS AND METHODOLOGY: This was a quasi experimental study that included 30 female participants who were suffering from dysmenorrhea. The subjects were randomly divided in to 2 groups; subjects in group A were given physiotherapy exercises and Kinesiotaping and group B were given yoga postures. These interventions were given on the first and second day of menstruation. RESULT AND CONCLUSION: The study concludes that both yogic postures and physiotherapy exercises helped in immediate reduction of symptoms in primary dysmennorhea. However, none of the treatment was considered superior.
Structural and Magnetic Studies on Pb4+ Substituted Cobalt Ferrite System
Authors: Labde B K , Padampalle A S , More N M
Published: August 2019

The polycrystalline samples of Co1+xPbxFe2-2xO4 with x = 0.0,0.1,0.2,0.3,0.4, and 0.5 varying in the steps of 0.1 were prepared by using solid state reaction technique. The structural and magnetic properties have been investigated by means of X-ray diffraction, high field magnetization and a. c. susceptibility measurements. The X-ray analysis confirmed the single-phase formation of the samples. The distributions of divalent, trivalent and tetravalent cations among the tetrahedral (A) and octahedral (B) sites have been obtained from the observed and calculated intensity ratios. The X- ray intensity indicates that tetravalent Pb4+ ions occupy both A and B sites replacing iron ions. The added Co2+ ions also occupy at A sites with replacing iron ions for x = 0.0, 0.1 and 0.2 and there after very small amount of Co2+ migrate from A sites to B sites replacing Fe3+ ions for the composition x = 0.3, 0.4, 0.5. The variation of saturation magnetic moment per formula unit at room temperature with Pb4+ content is satisfactorily explained on the basis of Neel’s collinear spin ordering model for all the samples. The Curie temperatures decreases almost linearly with increase of Pb4+ content from x = 0.0 to 0.5.
The Influence of Climate Organization and Individual Characteristics on the Employees' Performance of Regional Office of Sulawesi, Maluku, and Its Alignments
Authors: Ardiansyah Muhammad , Handayani Sri Setya
Published: August 2019

Work productivity is the effective and efficient utilization of human resources, the accuracy or appropriateness of the use of methods or ways of working compared to the available tools and time, to achieve goals. The main measure is the completion of volumes and workload on time, using minimal human resources. Theoretically, many factors contribute to the productivity of employee work in an organization, the quality of both the external nature and the internal organizational environment. Every employee has different characteristics. This difference illustrates that each employee has different individual characteristics. Rivai (2011) (in Astri, 2015) states that "Individual characteristics are special traits, mental characteristics, morals or character possessed by someone who distinguishes it from others". This study aims to analyze and examine (1) To describe the organizational climate, individual character, and performance of employees of the BPJS Employment Office of the Sulawesi Maluku Regional Office and its Alignments; (2) To analyze the effect of organizational profiles, individual characteristics on the performance of BPJS Employment staff of the Sulawesi Maluku Regional Office and its Alignments. The survey was conducted on 203 employees of the Regional Office of the BPJS Employment Office of the Sulawesi Maluku Regional Office and their ranks were randomly selected. Data collected through observation, interviews, and questionnaires. Data were analyzed using descriptive analysis and PLS (Partial Least Square) analysis. The results showed that (1) Organizational Climate, Individual Character and Performance of Employees of BPJS Employees in the Sulawesi Maluku Regional Office and their ranks are classified as good; (2) Organizational climate and individual character significantly influence the performance of BPJS Employment staff of the Sulawesi Maluku Regional Office and its Alignments
Trace Matriks Berbentuk Khusus 2 X 2 Berpangkat Bilangan Bulat Positif
Authors: Fitri Aryani  , Titik Fatonah
Published: August 2019

Trace matriks ialah jumlah dari elemen diagonal utama dari matriks kuadrat. Penelitian ini membahas mengenai jejak kekuatan bilangan bulat positif matriks nyata 2x2. Ada dua langkah dalam membentuk bentuk umum dari trace matriks. Pertama, tentukan bentuk umum (An) dan buktikan menggunakan induksi matematika. Kedua, tentukan jejak bentuk umum (An) dan buktikan dengan bukti langsung. Hasilnya diperoleh bentuk umum jejak daya bilangan bulat positif dari matriks nyata 2x2 nyata untuk n ganjil dan n genap.

 

Trace matrix is ​​the sum of the main diagonal elements of the square matrix. This Paper discusses the trace of positive integer power of  real 2x2 special matrices. There are two steps in forming the general shape of the trace matrix. First, determine the general form of (An) and prove it using mathematical induction. Second, determine the general form trace (An) and prove it by direct proof. The results obtained a general shape of trace of positive integer power power of  real 2x2 special matrices for n odd and n even.
Sebuah Generalisasi Baru Barisan Fibonacci-Lucas
Authors: Musraini M Musraini M , Efendi Rustam , Pane Rolan , Lily Endang
Published: August 2019

Barisan Fibonacci dan Lucas telah digeneralisasi dalam banyak cara, beberapa dengan mempertahankan kondisi awal, dan lainnya dengan mempertahankan relasi rekurensi. Makalah ini menyajikan sebuah generalisasi baru barisan Fibonacci-Lucas yang didefinisikan oleh relasi rekurensi

B_n=B_(n-1)+B_(n-2),n≥2 , B_0=2b,B_1=s

dengan b dan s bilangan bulat  tak negatif. Selanjutnya, beberapa identitas dihasilkan dan diturunkan menggunakan formula Binet dan metode sederhana lainnya. Juga dibahas beberapa identitas dalam bentuk determinan.

 

The Fibonacci and Lucas sequence has been generalized in many ways, some by preserving the initial conditions, and others by preserving the recurrence relation. In this paper, a new generalization of Fibonacci-Lucas sequence is introduced and defined by the recurrence relation

B_n=B_(n-1)+B_(n-2),n≥2, with ,  B_0=2b,B_1=s                         

where b and s are non negative integers. Further, some identities are generated and derived by Binet’s formula and other simple methods. Also some determinant identities are discussed.
Analisis Model Matematika Penyebaran Penyakit Demam Berdarah Dengue dengan Treatment
Authors: Soleh Mohammad , Zulpikar Zulpikar , Desvina Ari Pani
Published: August 2019

Demam Berdarah Dengue (DBD) adalah penyakit yang disebabkan oleh virus Dengue yang ditularkan ke tubuh manusia melalui gigitan nyamuk Aedes aegypti. Pasien yang terinfeksi virus memerlukan perawatan. Perawatan adalah metode yang penting dan efektif untuk mencegah dan mengendalikan penyebaran penyakit. Dalam makalah ini, kami membahas tentang analisis model matematika dari penularan demam berdarah dengan pengobatan. Studi ini meneliti model Esteva-Vargas yang dimodifikasi menggunakan pengobatan fungsi Wang. Hasil penelitian mengungkapkan bahwa ada satu kondisi kesetimbangan dari endemisitas penyakit. Jika pengobatan dilakukan dengan k<0,000186 kondisi kesetimbangan endemik penyakit stabil asimptotik, dan dalam jangka panjang akan selalu terjadi penyebaran penyakit. Sedangkan jika pengobatan dengan k≥0,000186 keadaan kesetimbangan endemik penyakit tidak stabil asimptotik, dan dalam jangka panjang akan bebas dari penyakit.

 

Dengue Hemorrhagic Fever (DHF) is a disease caused by Dengue virus that is transmitted to human body through AedesAegypti mosquito bites. Patients infected with the virus require treatment. treatment is an important and effective method to prevent and control the spread of disease. In this paper discusses about the mathematical model analysisof transmission dengue fever with treatment.This study examined the modified Esteva-Vargas model using the treatment of the Wang function. The results obtained, there is one disease endemic equilibrium state. If the treatment with k<0,000186then diseaseendemic equilibrium state is asymptotically stable, and in the long term will always happen deployment disease. Whereas if the treatment with k≥0,000186 then diseaseendemic equilibrium state is not asymptotically stable, and in the long term will always happen freedisease.
Metode Peramalan Deret Waktu Menggunakan Model Asymmetric Power Autoregressive Conditional Heteroskedastic (APARCH)
Authors: Kurniasari Dian , Ayu Masha Hana , Usman Mustofa
Published: August 2019

Era globalisasi menyebabkan banyak perubahan dalam pengembangan sistem ekonomi, salah satunya adalah data keuangan. Tujuan dari penelitian ini ialah untuk mendapatkan model terbaik dalam menganalisis dan memprediksi data penutupan harga saham mingguan untuk PT Adhi Karya (Persero) Tbk dari September 1990 hingga Januari 2016 yang berjumlah 1314 data. Model yang digunakan adalah model Asymmetric Power Autoregressive Conditional Heteroscedasticity (APARCH). Model terbaik dipilih berdasarkan Akaike Info Criterion (AIC) dan Schwarz Criterion (SC). Dari hasil analisis diperoleh model terbaik yaitu APARCH (1,1) dengan ARIMA (1,1,1) sebagai model rerata bersyarat. Hasil peramalan untuk 7 periode berikutnya menunjukkan bahwa perkiraan tersebut dalam interval kepercayaan 95% yang berarti bahwa hasil peramalan menggunakan model ini dapat dipercaya dalam kisaran 95%.

 

The era of globalization led to many changes in the development of economic systems, one of which is the data that is financially. The purpose of this study is to get the best model in analyzing and predicting weekly stock price closing data for PT Adhi Karya (Persero) Tbk from September 1990 to January 2016 which amounted to 1314 data. The model used is the Asymmetric Power Autoregressive Conditional Heteroscedasticity (APARCH) model. The best models are selected based on Akaike Info Criterion (AIC) and Schwarz Criterion (SC). From the analysis result obtained the best model that is APARCH (1,1) with ARIMA (1,1,1) as conditional average model. The result of forecasting for the next 7 periods shows that the forecast is within a 95% confidence interval which means that the forecasting result using this model can be trusted in the 95% range.
Pengaruh Ketebalan Elektroda Kerja TIO2/Grafit Terhadap Efisiensi Dye Sensitized Solar Cells (Dssc)
Authors: Nurhidayah Nurhidayah , Suwarni Suwarni , Rahayu Alfitri Usna Sri , Afrianto M. Ficky , Farid Faizar , Purbakawaca Rady , Deswadarni Frastica
Published: August 2019

Telah dilakukan pembuatan Dye Sensitized Solar Cells (DSSC) dengan elektroda kerja yang terbuat dari campuran TiO2 dan 14% grafit yang selanjutnya ditulis sebagai TiO2:C14%.Koloid TiO2:C14% dideposisikan pada substrat kaca konduktif Fluorine Doped Tin Oxide(FTO) dengan metode sol-gel-spin coating pada kecepatan 500, 1000 dan 1500 rpm selama 50 detik. Kemudian lapisan ini direndam selama 24 jam dalam pewarna (dye) yang diambil dari ekstrak kelopak bunga rosella (hibiscus sabdariffa). Untuk mengkarakterisasi bahan pembentuk sel surya dilakukan uji XRD dan SEM.  Uji efisiensi sel surya tersensitasi zat warna dihitung dengan menggunakan rangkaian karakteristik kurva IV. Dari hasil yang diperoleh ketebalan tertinggi diperoleh pada kecepatan putar 500 rpm dengan ketebalan lapisan 0,9 mm dan efisiensi yang dihasilkan adalah 0,014%.

 

The production of Dye Sensitized Solar Cells (DSSC) has been done. The transparent electrode is made by mixing of TiO2 and graphite 14% (TiO2:C14%). TiO2:C14% colloid is deposited on a conductive glass substrate Fluorine Doped Tin Oxide (FTO) by spin coating method at 500, 1000 and 1500 rpm during 50 second. Then, the layer is soaked of 24 hours in dye taken from the extract of rosella. SEM and XRD characterization are performed for looking properties of DSSC materials. The efficiency of DSSC is calculated by using the characteristic circuit IV curve. The highest efficiency value is obtained when the thickest active layer (0,9 mm) at 500 rpm, the resulting efficiency is 0,014%.
Sintesis Zeolit Terlapis Cupferron dan Aplikasinya Sebagai Adsorben Cu(II)
Authors: Ngatijo  , Faizar Farida  , Purmaida S Sihombing  , Rahmat Basuki
Published: August 2019

Zeolit-cupferron berhasil disintesis yang dikonfirmasi dengan data FT-IR, XRD dan SSA. Zeolit-cupferron disintesis dengan teknik pencampuran antara zeolite teraktivasi dan cupferron dengan rasio 0,5; 1,0; dan 1,5 : 10 (g :mL) selama 2 jam dan campuran yang dipeorleh dipisahkan dengan teknik sentrifugasi dan dikeringkan pada 50oC. Berdasarkan hasil analisis, luas permukaan spesifik zeolite pasca pelapisan dengan cupferron mengalami penurunan, namun ukuran pori mengalami peningkatan. Kristalinitas zeolite pasca pelapisan tidak mengalami perubahan yang signifikan tetapi berdasarkan analisis FT-IR keberadaan cupferron pada permukaan zeolite dapat dikonfirmasi. Rasio terbaik antara zeolite dan cupferron adalah 1,5 : 10. Kondisi optimum untuk aplikasi material zeolite-cupferron sebagai adsorben untuk Cu (II) adalah pada pH 5.

 

Zeolite-cupferron was successfully synthesized based on FT-IF, XRD, and SSA analysis. Zeolite-cupferron was synthesized by mixing technique by mixing the activated zeolite and cupferron at ratio 0,5, 1,0, and 1,5 : 10 (g:mL) for 2 h stir and then the mixture was centrifuged and dried at 50 °C. The result was the specific surface area of zeolite after coating by cupferron was decrease, hoever the pore size was increasing. Crystallinity after coating was not changed significantly but from FT-IR analysis reinforce the presumption that cupferron coated on zeolite. The best ratio of zeolite (g) and cupferron (mL) was 1,5:10. Application of zeolite-cupferron in adsorption Cu(II) onto this material optimum at pH = 5.
Uji Aktivitas Antimikroba dan Antioksidan dari Ekstrak Etanol Daun Keji Beling (Strobilanthes crispus BI)
Authors: Rumondang Bulan  , Firman Sebayang  , Emma Zaidar Nasution  , Putri Wulandari
Published: August 2019

Uji aktivitas antimikroba dari ekstrak etanol daun keji beling (Strobilanthes crispus BI) telah dilakukan terhadap mikroba Candida albicans, Microsporum gypseum, Bacillus cereus, dan Shigella dysentriae dengan metode difusi cakram. Uji aktivitas antioksidan ekstrak etanol daun keji beling dilakukan dengan metode DPPH. Daun keji beling yang telah halus, diekstraksi dengan metode maserasi menggunakan pelarut etanol 96% selama 2 hari, dan dipekatkan dengan rotary vacum evaporator. Uji aktivitas antimikroba dilakukan dengan variasi konsentrasi 100; 200; 300; 400; 500 mg/ml. Hasil skrining fitokimia ekstrak etanol daun keji beling menunjukkan hasil positif terhadap senyawa golongan alkaloid dan fenolik. Hasil penelitian menunjukkan ekstrak etanol daun keji beling efektif terhadap mikroba Candida albicans dan tidak efektif terhadap mikroba Microsporum gypseum, Bacillus cereus, dan Shigella dysentriae. Ekstrak etanol daun kejibeling mampu menghambat pertumbuhan Candida albicans dengan diameter zona bening untuk konsentrasi 100; 200; 300; 400; 500 mg/ml masing-masing adalah 11,53; 13,96; 15,46; 16,80; dan 18,20 mm. Uji aktivitas antioksidan ekstrak etanol daun keji beling dengan metode DPPH menunjukkan nilai IC50 sebesar 155,2 ppm.

 

The antimicrobial and antioxidant activity evaluation of leaves ethanol extract of KejiBeling (Strobilanthescrispus BI) has been carried out. The leaves of KejiBeling was grounded into powder and extracted using ethanol 96% (v/v) for 2x24 h and concentrated with rotary vacum evaporator. The antimicrobial activity was performed against several microbes, i.e. Candida albicans, Microsporumgypseum, Bacillus cereus, andShigella dysentriaeusing disk diffusion method. The antimicrobial activity was performed using several concentrations of leaves extract from 100-500mg/mL.The phytochemical screening showed the presence of alkaloid and phenolic group intheleaves ethanol extract of KejiBeling. The leaves ethanol extract of KejiBeling was antimicrobial active against Candida albicans with inhibition zone diameter of 11,53; 13,96; 15,46; 16,80; and 18,20 mm for the concentration of 100; 200; 300; 400; 500 mg/ml, respectively. The antioxidant activity of leaves ethanol extract showed IC50 value of 155,2 ppm
Media Pembelajaran Berbasis Lectora Inspire pada Mata Pelajaran IPA Kimia untuk Kelas VII SMP/MTs
Authors: Herdini  , Linda Roza , Shafiani Nur
Published: August 2019

Penelitian ini bertujuan untuk mengembangkan media pembelajaran berbasis Lectora Inspire pada mata pelajaran ilmu kimia untuk kelas tujuh SMP. Desain Penelitian dan Pengembangan dengan model Plomp digunakan dalam penelitian ini. Ini terdiri dari empat fase; penyelidikan awal, desain, realisasi dan konstruksi, dan validasi, pengujian dan revisi. Penelitian ini dilakukan di Fakultas Keguruan dan Ilmu Pendidikan Universitas Riau. Objek penelitian ini adalah media pembelajaran Lectora Inspire. Data dikumpulkan dengan memvalidasi media pembelajaran berbasis Lectora Inspire ke tiga validator (ahli media dan ahli materi pelajaran) dan uji coba terbatas untuk guru dan siswa di SMP Negeri 4 dan SMP Babussalam Pekanbaru. Hasil penelitian menunjukkan skor rata-rata validator adalah 98,31% dan skor uji coba terbatas berdasarkan tanggapan kuesioner guru dan skor rata-rata siswa masing-masing 99,48% dan 96,67%. Hasil penelitian ini menunjukkan bahwa media pembelajaran berbasis Lectora Inspire pada mata pelajaran IPA kelas VII SMP valid dan dapat digunakan sebagai media pembelajaran.

 

This study aims to develop Lectora Inspire based learning media on chemical science subjects for the seventh grade of Junior High School. Research and Development design with Plomp model was used in this study. It’s consists of four phases; initial investigation, design, realization and construction, and validation, test and revision. The study was conducted at Faculty of Teacher Training and Education University of Riau. The object for this study is Lectora Inspire learning media. Data were collected by validating Lectora Inspire-based learning media to the three validator (media expert and subject matter experts) and limited trials for teachers and students at State Junior High School 4 and Babussalam Junior High School Pekanbaru. The results showed  average score of validator is 98.31% and score of limited trial based on questionnaire responses of teachers and students average score are 99.48% and 96.67% respectively. The results of this study indicated that Lectora Inspire based learning media on chemical science subject for the seventh grade of Junior High School were valid and can be used as a learning media.
Penggunaan Software Adobe Flash CS6 dalam Perancangan Media Pembelajaran Kimia untuk Siswa Kelas X SMA
Authors: Rindang Kembar Sari  , Intan Sawila
Published: August 2019

Pengembangan media pembelajaran menggunakan perangkat lunak Adobeflash CS 6 perlu diimplementasikan di lingkungan pendidikan, terutama untuk pelajaran sains seperti kimia. Penggunaan media pembelajaran berbasis komputer sebenarnya bukanlah hal baru, walaupun hanya sedikit orang yang dapat mengembangkannya, baik dengan aplikasi Microsoft power point atau aplikasi pembelajaran produk media berbasis media lainnya. Adobe Flash CS 6 adalah aplikasi yang dapat digunakan untuk membuat desain dan membangun alat presentasi, publikasi atau aplikasi lain seperti media pembelajaran. Tujuan dari penelitian ini adalah untuk menghasilkan media pembelajaran ikatan kimia untuk kelas X SMA menggunakan perangkat lunak Adobeflash CS 6 yang valid dalam desain, penggunaan praktis dalam pembelajaran dan efektif bagi siswa. Jenis penelitian yang digunakan adalah Penelitian dan Pengembangan (Litbang). Langkah-langkah penelitian dan pengembangan (R and D) yang diterapkan adalah versi ADDIE (Analisis-Desain-Kembangkan-Implement-evaluasi) menggunakan model pengembangan multimedia Luther Sutopo. Perangkat lunak Adobeflash CS 6 sebagai perangkat lunak utama, Corel Draw X4 dan Swish Max 4 sebagai perangkat lunak pendukung. Media pembelajaran bonding kimia dalam tes validitas, tes kepraktisan dan tes efektivitas / respon siswa dengan skor berturut-turut: 85,44, 86,77 dan 86,8 dengan kriteria valid, sangat praktis dan baik.

 

The development of instructional media using Adobeflash CS 6 software needs to be implemented in educational environment, especially for science lesson such as chemistry. The use of computer-based learning media actually is not new, although only a few people who can develop it, either with Microsoft power point applications or other media-based media product learning applications. Adobe Flash CS 6 is an application that can be used to create design and build presentation tools, publications or other applications such as learning media. The purpose of this research is to produce chemical bonding learning media for class X SMA using Adobeflash CS 6 software valid in design, practical use in learning and effective for students. The type of research used is Research and Development (R and D). The research and development (R and D) steps applied are the ADDIE (Analysis-Design-Develop-Implement-evaluate) version using the Luther Sutopo multimedia development model. Adobeflash CS 6 software as the main software, Corel Draw X4 and Swish Max 4 as supporting software. Chemical bonding learning media in validity test, practicality test and effectiveness test / student response with consecutive scores: 85,44, 86,77 and 86,8 with valid criterion, very practical and good.
PENINGKATAN KUALITAS WARMER STERNO JELLY DENGAN METODE TAGUCHI
Authors: Ahmad Anton Royanto , Budiyanto Aris , Mu’alif Fazar , Widodo Slamet
Published: August 2019

Alternative fuel will be one of the solutions for resolving energy crisis that happening now. Methanol gel is one of them that have lot of benefits. In this paper will be discussing how to increase quality of methanol gel. The quality that we pursue is to decrease number of explosion when the process of incineration was executed. Only four factors observed in this study, include; using purple dye, number of NCl volume, number of layer, and using water as raw material. Experiment method used in this study was Taguchi Method with L8 orthogonal array and twice repetitions. The results that we get were quite surprising. Using ANOVA with 95% level of confidence as analyzer the results, show us that the influencing factors for methanol gel quality were using purple dye, number of layer, and using water.