bluuebunny/crossref_metadata_2025 huggingface dataset:
Three-Phase Sandstone Acidizing: Quantification and Analysis of Evolved CO2 in the Presence of Oil and Water
Authors: Muhemmed Sajjaat , Kumar Harish , Nasr-El-Din Hisham
Published: April 2019

The proposed paper presents a detailed study on evolving CO2 due to calcite mineral dissolution, and its ensuing activity during the matrix acidizing of sanstone reservoirs. Coreflood experiments were conducted in acidizing, and interpreted via simulation studies using a three-phase, two scale continuum model. Sensitivity studies were then performed on the calibrated simulation model. Acid injection was performed on 6 in.-length, 1.5 in.-diameter Bandera Brown sandstone cores of variable calcite content, using 15 wt% HCl single-phase coreflood experiments at high back pressures were conducted to calibrate and initially test the three-phase, two-scale continuum model. Experimentally measured rock-heterogeneity via computed tomography (CT) scans, relative-permeability and capillary pressures, oil-water interfacial tension and contact-angle parameters were inputs for three-phase, two-scale model-based history matching and sensitivity studies. The three-phase, two-scale continuum model was able to match all performed coreflood experiments with a good level of accuracy. The acid-calcite chemical reaction parameters were fixed in all cases to ensure consistency in analysis. Oil production was observed, with an average of 40% recovery of the residual oil in place at CO2 miscible pressures. CO2 miscibility in oil enhances swelling with time, which was seen as the main mechanism for oil production. A direct symmetry was observed between the oil recovery and average CO2 moles in oil. The recovery curve flattened once surrounding oil reached its full-saturation level with CO2. Reduction in oil-water interfacial-tension increased the recovery factor only by a slight margin, owing to dependency on evolved CO2 volume. Immiscible CO2 conditions yielded no residual oil recovery. The successful application of the three-phase, two-scale continuum model approach sets a new bar in the area of sandstone acidizing. The acid breakthrough criterion has been revised toward application in a three-phase environment. The potential of CO2, a by-product of acidizing, towards its contribution in swelling oil in the presence of a three-phase environment, and towards possible oil recovery in the event of flowing back a well.
Afet İçerikli Haberlerin Afetlere Karşı Toplumsal Kapasite Geliştirmeye Etkisi
Authors: YILMAZ Serhat
Published: April 2019

Afetlere karşı yürütülen hazırlık çalışmalarının en önemli hedeflerinden birisini toplumsal yaşamın devamlılığını sağlamak oluşturmaktadır. Bu hedefe ulaşabilmede ise afetlere karşı bireysel risk azaltma faaliyetlerinin yürütülmesi hayati önem taşımaktadır. Ancak afet riski altındaki bir toplumun geneline ulaşarak bu farkındalığı oluşturmak zaman ve maliyet açısından yüksek değerlerle gerçekleşebilmektedir. Günlük yaşam içerisinde bilgi ihtiyacının karşılanması amacıyla toplumun genelinde yaygın olarak kullanılan özellikle gazete ve televizyon gibi kitle iletişim araçları bu yüksek maliyetleri azaltabilecek önemli avantajlar sunmaktadır. Bu çalışma kapsamında kitle iletişim araçlarının sağladığı bu avantajların afetlere yönelik toplumsal kapasite geliştirme bağlamında ne kadar etkin kullanıldığı incelenmiştir. Bu bağlamda, Türkiye genelinde en çok okunan ilk üç gazete ve en yüksek izlenme oranına sahip ilk üç ana haber programının 21 Temmuz 2017 tarihli Bodrum Depremi özelinde yayımladıkları haberlerin içerik analizleri çerçeveleme kuramı kullanılarak incelenmekte ve afetlere karşı toplumsal kapasite geliştirmeye etkileri sorgulanmaktadır. Çalışmada kitle iletişim araçlarının afetlerle ilgili içeriklerde haberi büyük ilgi çeken (sansasyonel) boyutuyla ele aldığı, bireysel hazırlığa yönelik bir farkındalık oluşturmada kitle iletişim araçlarının sunduğu avantajlardan yeteri kadar yararlanılmadığı sonuçlarına ulaşılmaktadır.
Yüzeysel Sularda Pestisit Kalıntısının Araştırılması Çalışma Örneği; Alanya Alara Çayı
Authors: KOÇYİĞİT Hasan , SİNANOĞLU Firdevs
Published: April 2019

Günümüzde
sanayileşmenin ve teknolojinin gelişmesi hayatı kolaylaştırırken diğer taraftan
çevre kirliliği sebebiyle kullanılabilir su kaynaklarının azalmasına sebep
olmaktadır. Sanayileşmenin ve teknolojinin en önemli çevre kirleticilerden biri
de tarımsal amaçlı kullanılan pestisitlerdir. Modern tarımın vazgeçilmezi olan
pestisitler endüstriyel, evsel vb. olmak üzere birçok alanda kullanılmaktadırlar.
Bu çalışmada Alanya ve çevresinin en önemli su kaynağı olan Alara Çayı
sularında pestisit kalıntısının araştırılması amaçlanmıştır. Yöredeki tarım
faaliyetlerinin yoğunluğu pestisit kalıntısının araştırılması açısından oldukça
önemlidir. Bu amaçla Alara Çayı üzerinde 4 adet numune alma noktası
belirlenmiştir. Bu noktalardan yağışlı ve kurak mevsimleri temsil edecek
şekilde numuneler alınmıştır. Alınan numunelerde 110 çeşit pestisitin kalıntı
seviyesi araştırılmıştır. Bu pestisitlerin seçilmesinde bölgede yetiştirilen
yaş sebze ve meyvelerin ihracatında istenen parametreler, Yerüstü Su Kalitesi
Yönetmeliği Tablo-4 ve Tablo-5 dikkate alınarak belirlenmiştir. Alınan
numuneler Quechers Metoduna göre ekstrakte edilip, LC-MSMS ve GC-MS cihazlarına
enjeksiyon işlemi yapılarak analiz edilmiştir. Analiz çalışmalarında Tespit ve
Tayin Limitleri ile Geri Kazanım çalışmaları yapılmıştır. Tespit Limitleri
(LOD) 0,23 ile 9,67 ppb arasında değişmektedir. Analiz sonuçlarına göre tespit
edilen pestisit değerlerinin Tayin Limitlerinden düşük olduğu gözlemlenmiştir.
Probing of perforated sections of gas wells with acoustic waves
Authors: Bulatova Z.A. , Scheglov A.V.
Published: April 2019

The propagation of an acoustic signal in a perforated gas well is studied.
Thermodynamic Justification of Physical Fields Effect on Oil Dispersed Systems
Authors: Kovaleva L.A. , Galimbecov A.D. , Galeeva L.N.
Published: April 2019

In the paper the filtration processes of a single-phase viscous liquid with the influence of a radio-frequency electromagnetic field with considering the adsorption process is studied. The general system of equations describing this process includes the heat equation and the mass transfer equation taking into account adsorption process. As a result of the research, it was established that when the radio -frequency EM field is affected, the adsorption process slows down, which has a good effect on the filtration capacity of the saturated rock. In the special case, in the absence of a field, the adsorption process follows the classical Langmuir kinetics. The results of the research can find wide application in substantiating fundamentally new science-intensive technologies for the use of electric fields, particularly, in oil production, taking into account the adsorption interaction.
On modelling the thermal stress state in reaction pipes of petroleum processing equipment
Authors: Khakimov A.G. , Tsirelman N.M.
Published: April 2019

This paper reports the research results on the thermal stress state in reaction pipes of petroleum processing equipment with heterogeneity of the temperature field taken into account.
Dynamics of the gas hydrate formation in a porous medium at the gas injection
Authors: Khasanov M.K. , Musakaev N.G.
Published: April 2019

The features of the gas hydrates formation at the gas injection into the porous medium initially saturated with gas and water are considered. Self-similar solutions of the axisymmetric problem describing the distribution of the main parameters in a reservoir are constructed. The solutions have been found according to which the gas hydrate formation can occur at the frontal surface or in the extended area.
About of the theory of washing away of gas from of the gashydrate massif
Authors: Chiglintseva A.S. , Shagapov V.Sh.
Published: April 2019

In this paper, attraction of gas from the composition of the gas hydrate array by washing out warm water.
A Novel Image Encryption Algorithm Using Multiple Encryption Techniques for Mobile Devices
Authors: Bhat Showkat Ahmad , Singh Amandeep
Published: April 2019

Background & Objective:

Digital multimedia exchange between different mobile communication
devices has increased rapidly with the invention of the high-speed data services like
LTE-A, LTE, and WiMAX. However, there are always certain security risks associated with the use
of wireless communication technologies.

Methods:

To protect the digital images against cryptographic attacks different image encryption algorithms
are being employed in the wireless communication networks. These algorithms use comparatively
less key spaces and accordingly offer inadequate security. The proposed algorithm described
in this paper based on Rubik’s cube principle because of its high confusion and diffusion
properties, Arnold function having effective scrambling power, blocking cipher with block encryption
and permutation powers. The main strength of the proposed algorithm lies in the large key spaces
and the combination of different high power encryption techniques at each stage of algorithm. The
different operations employed on the image are with four security keys of different key spaces at
multiple stages of the algorithm.

Results & Conclusion:

Finally, the effectiveness and the security analysis results shows that the proposed
image encryption algorithm attains high encryption and security capabilities along with high
resistance against cryptanalytic attacks, differential attacks and statistical attacks.
An Efficient Fitness Function for Clustering of Wireless Sensor Networks
Authors: Hoseinpour Atiieh , Lahijani Mojtaba Jafari , Hosseinpour Mohammad , Kazemitabar Javad
Published: April 2019

Background & Objective:

A sensor network is composed of a large number of sensor nodes
that are deployed to perform measurement and/or command and control in a field. Sensor nodes are battery
powered devices and replacement or recharging of their batteries may not be feasible. One of the
major challenges with sensory wireless networks is excessive energy consumption in nodes. Clustering
is one of the methods that has been offered for resolving this issue. In this paper, we pursue evolutionary
clustering and propose a new fitness function that har-nesses multiple propagation indices.

Methods:

In this paper we develop an efficient fitness function by first selecting the best clusters,
and then selecting the best attribution of cluster to clusters. The distance between the nodes and relevant
cluster heads was used for the mathematical modelling necessary. In the end we develop the fitness
function equation by using normalization of the raw data.

Results:

Simulation results show improvement compared to previous fitness functions in clustering
of the wireless sensor networks.
The Repulsive Force Spectrum of Magnetorheological Fluids Based Tactile Devices Applicable to Robot Surgery
Authors: Park Yu-Jin , Yoon Ji-Young , Lee Ye-Ho , Choi Seung-Bok
Published: April 2019

Objective:

This paper presents controllable force ranges of tactile devices made of smart
Magnetorheological Fluids (MRF) and porous sponges (MR sponges in short).

Methods:

In order to identify the wide controllable range of the field-dependent repulsive force, three
MR sponge samples with three different MR fluids are fabricated using polyurethane foam and cling
film. Then, the repulsive forces of the samples are measured using the motor-driven experimental
apparatus and the results are presented with minimum and maximum values of the repulsive forces.
On the other hand, in order to investigate the feasibility of the proposed tactile device for application
to Robot-assisted Minimally Invasive Surgery (RMIS), pig’s organs such as liver, lung and heart,
whose viscoelastic properties are very similar to those of human tissues, are tested under same conditions.

Results:

It is shown that the range of the repulsive spectrum of the pig’s organs can be achieved using
the proposed samples by controlling the magnetic field intensity to be applied to MRF domain.
SOCIAL SUPPORT PERCEPTION AND SUCCESSFUL AGING AMONG JAVANESE PEOPLE
Authors: Karmiyati Diah
Published: April 2019

The objective of this research was to obtain a correlation between social support perception and successful aging among elderly Javanese people. This research was conducted by using quantitative correlational design. The method was intended to determine the contribution social support on successful aging. Subject of this research was the elderly whose the member of some elderly organization in Solo and Malang. The sampling technique used was purposive sampling based on the prescribed criteria of research subjects. Then, the collected data were then analyzed by using Pearson Correlation Method. The findings of this research showed that there was a significance positive correlation between social support perception and successful aging among Javanese people.
NILAI-NILAI ISLAM DALAM KONSTRUKSI SOSIAL KONSERVASI LINGKUNGAN PESISIR (STUDI DI MANGROVE CENTERTUBAN)
Authors: Sudiasmo Fandi
Published: April 2019

Various problems related to the growth of coastel area are rapidly relative, definitely the handling steps immediately should be concepted. In addition of what have been predicted, in this time one demage of the coastel area is demaged of mangrove, so that why the conservation in coastel area extremely needed because there are several benefits for society. Mangrove Center of Tuban (MCT) is one of institute that has been developing the conservation of coastel area. The purpose in this research is understanding the values of Islam in social construction of coastel area conservation in Tuban Mangroves Center, utilised the qualitative research with phenomenological approach, use the analysis techniques of research phenomenological Creswell data, did in Jenu village- Jenu subdistricts regency of Tuban. The existency of conservation activities surely not released to the process of social construction. The concept of social construction is the meaning of each individul process for each areas and each outside aspect consist of Externalitation process,Objectivation, and internalitation. Start from the activities, planting of mangrove that planted everyday, be a habits, have an institute other socialitation to make some conservations. Conservation activities as a realization of values in religion (Islam), pay attention to some areas not liberated from the verses of the holy Qur’an (QS Al Isra (17): 44).
Menuju Ecocentrisme: Menapaki Jalan Ekologis yang Etis
Authors: Murti Ghanesya Hari
Published: April 2019

Upaya untuk menghidupkan relasi yang harmonis antara manusia dengan alam selalu gagal dan menemukan polemik kendati kondisi tersebut selalu diidealkan bersama. Tentunya, usaha tersebut tidak hanya membutuhkan pikiran kritis tapi juga dorongan etis yang kuat. Posisi etis itu ada pada upaya untuk pindah dari cara berpikir antroposentris yang berpihak untuk mendominasi alam demi kebutuhan manusia menuju cara berpikir ekosentris yang menganggap bahwa kepentingan alam juga harus diikutkan haknya sebagai subjek hukum. Tulisan ini dengan begitu hendak 1) memberikan ilustrasi posisi etis pada dua peristiwa yang melibatkan alam sebagai sebagai subjek dan non subjek hukum, 2) mengurai argumentasi etis yang betengkar dan saling melegitimasi tindakan moral pada alam 3) menunjukkan argumentasi para intelektual khas libertarian Amerika yang berupaya menunjukkan posisi ecocentris yang mereka alami. Sederet perjalanan pemikiran para environmentalists itu dimaksudkan untuk merunut argumentasi akademis mengapa memberikan legal standing bagi sungai ataupun sebuah taman nasional menjadi normal. Sehingga muncul konsekuensi bahwa alam juga mampu menuntut hak yang sama di mata hukum untuk dihitung kepentingannya yang dilukai oleh manusia. Hanya dengan begitu, hak sungai untuk tetap jernih, burung untuk tetap berkepak dan lembah untuk tetap berlekuk bisa dinikmati sebagai buah perkembangan peradaban yang lebih etis.
Cromomicose por Fonsecaea Pedrosoi apresentando as tres fases conidiais, acrogena, acropleurogena e semi-endogena
Authors: Lacerda F. A. M. , Fernandes M. J. S. , Queiroz L. A.
Published: April 2019

Una muestra de Fonsecaea pedrosoi (Brumpt) Negroni 1936, fue aislada de un caso de cromomicosis forma plana y presentó tres fases de esporulación: Cladosporium, Rhinocladiella y Phialophora
Associação de candida mogii com albatrellus ovinus
Authors: De Queiroz L. A. , Cavalcanti M. A. Q.
Published: April 2019

Por cinco años consecutivos fueron colectados especímenes de A. ovinus asociados a C. mogii.
Desain Senyawa Turunan Karbamat Sebagai Insektisida Baru Menggunakan Metoda In Silico
Authors: Ananto Agus Dwi , Mudasir Mudasir , Armunanto Ria
Published: April 2019

Linear equation of QSAR model of insecticidal activity of carbamate derivatives based on atomic charge and hydrofobic, electronic and steric descriptors has been investigated. The descriptors were calculated by semiempirical PM3 method and biological activities of the compound were taken from experiment. The relationship between descriptors and their biological activities was analyzed with multilinear regression analysis.The best linier equation resulted from that analysis is :

Log 1/LD 50 = 12,651 + (2,467 qC2) + (2,832 qC4) - (14,089 qC6) - (0,24 qO7) + (0,293 Î¼) - (0,08 SA (grid)) +(0,041 V)+ (0,141 EH) - (0,303 log P)

n = 39 ; r = 0,839 ; adjusted r2 = 0,612 ; SE = 0,355; Fhit/Ftable = 3,443 PRESS=5,188

Based on that model, a new carbamate derivative has been designed which show better predicted activity (log 1/LD50 = 9,79) while the old one (log 1/LD50 = 8,81). This new carbamate insecticide derivative can be synthesized laboratoriccally for the next prove.

Key Word:QSAR, Insecticides carbamate, PM3.
Sistem Pakar Antisipasi Kegagalan Pengembangan Sistem Informasi dengan Pendekatan Forward Chaining
Authors: AR Khairan
Published: April 2019

Dalam pengembangan sistem informasi, kemungkinan kesalahan atau

kegagalan (failure) cukup tinggi dan acap kali terjadi kasus kegagalan yang berulang yang dapat berakibat fatal bagi kelangsungan transaksi sistem pada suatu organisasi, sehingga penting untuk melakukan antisipasi untuk mengatasi kegagalan (failure) atau meminimalisir resiko kegagalan pengembangan sistem informasi tersebut. Pada penelitian ini dikaji beberapa kesalahan-kesalahan yang umum dan sering terjadi pada saat pengembangan sistem informasi menggunakan pendekatan forward chaining. Berdasarkan pada proses penelitian yang telah dilakukan, pendekatan metode penalaran kedepan (forward chaining) dapat digunakan dalam membentuk suatu aturan yang dapat melakukan penalaran terhadap pengetahuan kegagalan pengembangan sistem informasi dan setiap aturan yang dimasukkan ke dalam basis pengetahuan mampu di baca (dirunut) dengan baik oleh sistem.
Re-Deskripsi Leucopitermes Leucops; Subulitermes-Group (Isoptera, Termitidae, Nasutitermitinae) Di Stasiun Penelitian Suaq Balimbing, Aceh Selatan
Authors: Ernilasari Ernilasari , Syaukani Syaukani , Jauharlina Jauharlina
Published: April 2019

Leucopitermes leucops merupakan spesies rayap yang dimasukkan kedalam kelompok soil-feeding nasute atau Subulitermes-group yaitu spesies rayap pemakan material “tanah”. Rayap ini memiliki peran penting dalam proses dekomposisi material organik tanah. Taksonomi rayap Subulitermes-group selama ini masih sulit dipahami dan mengalami sejumlah revisi. Penelitian ini bertujuan untuk mendeskripsikan kembali rayap Leucopitermes leucops di Stasiun Penelitian Suaq Balimbing, Taman Nasional Gunung Leuser. Penelitian ini menggunakan metode belt-transek. Hasil penelitian berdasarkan deskripsi karakter morfologi Leucoptermes leucops menunjukkan bahwa karakter kapsul kepala pada kasta prajurit dan mandibel pada kasta pekerja menjadi karakter kunci untuk membedakan Leucopitermes leucops dengan spesies dari genus yang sama maupun dengan spesies Subulitermes-group lainnya.Leucopitermes leucops is a termite species of soil feeding-nasute or Subulitermes-groups its classification by "soil" feeders. This termite has an important role in the decomposition process of soil organic matter. Currently, the taxonomy of this group is still difficult to understand and experience a number of revisions. This study aims to re-describe of Leucopitermes leucops in Suaq Balimbing Research Station. The method used was a standardized sampling protocol (belt transect) method. The result was described based on morphological characters of Leucopitermes leucops it is found that the key characters to distinguish Leucopitermes leucops with species in the same genus and other Subulitermes-group species.
Genetic Variation Within the HLA-DRA1 Gene Modulates Susceptibility to Type 1 Diabetes in HLA-DR3 Homozygotes
Authors: Aydemir Özkan , Noble Janelle A. , Bailey Jeffrey A. , Lernmark Åke , Marsh Patrick , Andersson Svärd Agnes , Bearoff Frank , Blankenhorn Elizabeth P. , Mordes John P. ,   Better Diabetes Diagnosis (BDD) Study Group, Persson Martina , Elding Larsson Helena , Forsander Gun , Ivarsson Sten-Anders , Ludvigsson Johnny , Marcus Claude , Carlsson Annelie
Published: April 2019

Type 1 diabetes (T1D) involves the interaction of multiple gene variants, environmental factors, and immunoregulatory dysfunction. Major T1D genetic risk loci encode HLA-DR and -DQ. Genetic heterogeneity and linkage disequilibrium in the highly polymorphic HLA region confound attempts to identify additional T1D susceptibility loci. To minimize HLA heterogeneity, T1D patients (N = 365) and control subjects (N = 668) homozygous for the HLA-DR3 high-risk haplotype were selected from multiple large T1D studies and examined to identify new T1D susceptibility loci using molecular inversion probe sequencing technology. We report that risk for T1D in HLA-DR3 homozygotes is increased significantly by a previously unreported haplotype of three single nucleotide polymorphisms (SNPs) within the first intron of HLA-DRA1. The homozygous risk haplotype has an odds ratio of 4.65 relative to the protective homozygous haplotype in our sample. Individually, these SNPs reportedly function as “expression quantitative trait loci,” modulating HLA-DR and -DQ expression. From our analysis of available data, we conclude that the tri-SNP haplotype within HLA-DRA1 may modulate class II expression, suggesting that increased T1D risk could be attributable to regulated expression of class II genes. These findings could help clarify the role of HLA in T1D susceptibility and improve diabetes risk assessment, particularly in high-risk HLA-DR3 homozygous individuals.
Exploring the Intention of FTA Utilization by Exporting SMEs: Evidence from South Korea
Authors: Song Joon-Heon , Moon Hee-Cheol
Published: April 2019

Considering the proliferation of free trade agreements (FTAs) worldwide, this study develops and empirically tests a conceptual model to explain the impact of CEO attitudes on the intention of exporting firms to utilize FTA preferential tariffs. Based on a survey of 221 exporting small and medium-sized enterprises in South Korea, this study employed partial least squares structural equation modelling to test the hypotheses. Results show that perceived usefulness and organizational learning partially mediate the relationship between CEO attitudes and intention to use FTA schemes. This study deepens our understanding on the firm’s internal process for utilizing FTA preferential tariffs.
Looking Back to Look Forward: Setting Future Research Agenda for International Business in Textiles and Clothing Industry
Authors: Chu Wai Ching Alice , Chan Man Hin Eve , Cheung Jenny , Nguyen Hong-Oanh
Published: April 2019

Since its development by Tinbergen (1962), the gravity model of international trade has widely been applied to analyse the effect of various factors on trade relationships between countries. Past studies on trade gravity vary not only in the mix of model variables but also in how they have come into the analysis. This study reviews existing literature on bilateral trade with an aim to identify influential predictors such as changes of trade policy and national development strategy and highlight important yet understudied factors such as transport and logistics infrastructure, and sustainable development. To demonstrate the needs to examine these critical factors across industry sectors, the study presents the case of textiles and clothing (T&C) production and trade between China and its trading partners as an illustration. Through the literature review, it shows how the gravity model can be applied to address current issues in international trade arena such as the potential trade war between the US and China, China’s Belt and Road Initiative (BRI), and other important factors shaping global T&C trade. This study offers future research directions for analysis of global trade in the T&C industry and contributes to the wider literature of international business and trade.
Early Chilhood, Characteristic and Creative-Social Development
Authors: Subur Subur
Published: April 2019

Every child born, not only has talent and creative potential, but also has social tendency. Talent and creative and social potential are important capital to determine child future. Talent and creativity can develop optimally when they are coached intensely and professionally. Well-developed talent will be very helpful for children future. Every parent wants to have creative and sociable child but, not all parents understand how to develop their children’s creative and social potential. Therefore special strategy to develop creative and social potential for early childhood, i.e.: playing, storytelling, singing, creating product, imagination, exploration, experiment, grouping, imitating, cooperative playing and sharing. The characteristics of social development are often associated by the skill of cooperation, rotation, initiative/leadership, sharing, discipline and participation.
Asymmetric Secret Key Transfer Scheme over an Open Channel in K-Deterministic Groups with the Conditions C (3) –T (6)
Authors: Bezverkhniy N. V. , Nikitina M. V.
Published: April 2019

The article solves a problem of developing a scheme to provide a secret key exchange over an open communication channel. The basic idea of creating such a scheme is well known. It is based on a concept of the one-way function. This refers to the functions whose values are calculated much easier than the inverse function values. When developing the one-way functions a recognition algorithm of words equality in groups with conditions of small cancellation C (3) - T (6) is used. In this case, the group is represented by a set of its generating and determining relations. All the work to accomplish development of algorithms and evaluate their complexity is carried out using the group diagrams of equality. The existence of such diagrams is proved in the well-known van Campen lemma. The paper result is that the proposed scheme for the exchange of secret keys has the following properties. Direct algorithms have a linear complexity, and a complexity of the inverse algorithms is exponential. It should be noted that the algorithms complexity was estimated by the areas of the corresponding group diagrams, which are determined by the number of areas they include. The constructed secret key represents some element of a pre-selected group with conditions C (3) – T (6). It can be represented in an infinite number of ways by words in the alphabet from the generators of the group. Thus, the remaining obstacle to the practical application of the key exchange scheme developed is the ambiguity of the secret key record. Finding a common representative as the lexicographically shortest word in the class of equal words turns out to be too difficult. Thus, this question remains open. Although the task of exchanging secret keys itself can be formally considered as solved.
Using an Observer in a Sliding Mode for Modeling Antiangiogenic Therapy
Authors: Vinogradova M. S. , Tkachev S. B. , Tkacheva O. S.
Published: April 2019

Currently, a slew of biomedical system models have been proposed, but in certain cases their real-world application is a challenge.

This is because in these models not all state variables can be measured. The task of restoring the state vector, which is to obtain estimates for its non-measurable components, can be solved by control theory methods, in which it is formulated as the task of constructing a state observer.

The article analyses Russian and foreign publications available in the field concerned to consider the problem of observer applications to biological systems. One of the types of state observers, an observer operating in a sliding mode in particular, is under consideration. The procedure to construct it for biological systems is shown by an example of a tumor growth model in which treatment is based on blocking the processes of angiogenesis.

For a nonlinear dynamic system describing the tumor growth in the process of antiangiogenic therapy, its normal form is shown and a nonlinear state observer in sliding modes is constructed. As the measurable system output, a variable appropriate to the tumor volume was selected. The estimate of the total vector of the system state, obtained by the observer, is used to build state feedback that stabilises the program trajectory. Mathematical modelling, which shows that, in principle, in sliding modes an observer can be used for control of biological systems, proves the theoretical principles.
THE INFLUENCE OF JOB SATISFACTION AND LEADERSHIP STYLE ON EMPLOYEE PERFORMANCE IN CV. PUTRI SION TUNGGUNJAGIR VILLAGE, MANTUP SUB-DISTRICT, LAMONGAN
Authors: Badriyah Nurul
Published: April 2019

The development of the business world today more rapidly resulting in tight competition. This is demanding business players in order to leap ahead of the competition with how to improve the quality of human resources and expected employee can improve performance. To be employee performance and the company is also required to pay attention to the factors that can affect the performance of the employees. This research is a type of quantitative research, data obtained with the spread of the questionnaire to 45 respondents. The population in this research is all employees on CV. Putri Sion which numbered 45 people. The Data obtained and then in the analysis using the validity test, test reliability test, classical assumptions, determination coefficient test, t test, F test and multiple linear regression analysis. This research result shows that partially, job satisfaction and leadership style significantly affect to employee performance meanwhile the most dominant affecting performance is employee jobs satisfaction.
Efectos de las interacciones interétnicas en las relaciones de género de la kumpania de gitanos en Quito
Authors: Villota Mera Jesús Eduardo
Published: April 2019

En este artículo se analizan los efectos que producen las interacciones sociales interétnicas en las relaciones de género de la comunidad gitana en Quito. Las interacciones son el resultado de procesos de sedentarización, tránsito a casas y adecuación a las dinámicas de la ciudad por parte del grupo desde finales del siglo XX. Estas interacciones responden a tres órdenes: el sexo-afectivo, el religioso-pentecostal y el relacional en espacios comerciales, los cuales se han estudiado a partir de una metodología cualitativa que ha incluido observación participante y entrevistas. Los resultados de la investigación muestran que las interacciones terminan respaldando un panorama de desigualdad desfavorable a las mujeres gitanas no exento, empero, de contradicciones y liberaciones gestadas por estas mismas mujeres.
Pola Komunikasi Guru dan Orang Tua dalam Pembinaan Akhlak Peserta Didik
Authors: Lestari Puji
Published: April 2019

This study uses a type of qualitative research (qualitative research), which aims.1), to determine the pattern of communication between parents and teachers in the moral development of students in SMA Negeri 2 Sukamaju District. Luwu Utara; 2) To find out the form of moral coaching of parents towards learning that is studying at SMA Negeri 2 Sukamaju district. Luwu Utara;3) to find out the form of moral coaching of students in schools conducted by the teacher; 4) to find out what is the teacher and teacher in the moral development of students. The results showed that 1) the pattern of communication and cooperation between parents and teachers in the moral coaching of students was good enough because there were parents and teachers in fostering the morality of students in SMA 2 Sukamaju; 2) There are several forms of parental moral coaching to students in SMA 2 Sukamaju; 3) Forms of Moral Coaching for Students in SMA 2 Sukamaju can be grouped into two forms of moral coaching, namely morality to humans, and the environment; 4) Constraints in the moral development of students are the family environment, association, and electronic media.
MANAJEMEN PENGELOLAAN KELAS GURU PENDIDIKAN AGAMA ISLAM DALAM MENINGKATKAN KEDISIPLINAN SISWA
Authors: Darman Andi
Published: April 2019

This study aims to find out the Islamic religious education teachers in managing the class and also note it to grade IX students in Malangke Barat 2 Public Middle School North Luwu Regency. This research is a field research that uses a qualitative approach that describes the phenomenon as it is. with data collection techniques, interviews, questionnaires and documentation. The data subjects in this study were PAI teachers of 2 people, students of class IX 71 people.The results of the study are: 1) the efforts of Islamic education teachers in classroom management in improving discipline, showing that: a) Implementing learning methods, conducting room arrangement, and evaluating after the learning process, b) Description of student discipline in each class occurs the noise made by students even though the teacher always reprimanded him and indicated the form of discipline that is the students disturbing each other, students mocked each other when a friend arrived late even though the teacher was in the process of explaining, and students made a fuss when the teacher was permission to leave, c) the correlation between the teacher's efforts Islamic education in the management of teacher classes in classroom management with discipline is closely related to the smooth of learning process. If the teacher is less skilled in classroom management, the learning process is hampered and the teaching objectives are difficult to achieve.
HUBUNGAN ANTARA PERSEPSI MASYARAKAT DAN MINAT SISWA MELANJUTKAN STUDI DI MTs
Authors: Asniati Asniati
Published: April 2019

This study aims to determine the public perceptions around the Madrasah Tsanawiyah Sabilit Taqwa of Margomulyo Village, Tomoni Timur Subdistrict, East Luwu Regency, and to find out the interest of students to continue their study at Madrasah Tsanwiyah Sabilit Taqwa, Margomulyo Village, Tomoni Timur Subdistrict, East Luwu Regency, and to find out the significant relationship between people's perceptions and the interest of students continuing their studies at Madrasah Tsanawiyah Sabilit Taqwa. This research use descriptive quantitative and inferential research with ex-post facto research design that is symmetrical. The total population is 2037 consisting of 2003 people and class VII students as many as 34 students by sampling uses probability sampling and simple random sampling technique so that it is set to 100 societies while the determination of the sample for students with a total sampling technique so that 34 madrasah students class VII. The instrument used in this study was questionnaires, while the statistical analysis technique used was using the SPSS program ver. 20 for Windows.The results of SPSS data processing obtained an average score of public perception of 78.23 with a standard deviation of 7.477. Likewise, the average score of student interest is 79.50 with a standard deviation of 5,040. Based on the results of the study showed that public perceptions have a very strong relationship with the interest of students continuing their studies at Madrasah Tsanawiyah Sabilit Taqwa Margomulyo Village, Tomoni Timur District, East Luwu Regency with a significance level is 0.00 and the correlation coefficient level is 0.816. This shows that between public perceptions and the interest of students continuing their studies at Madrasah Tsanawiyah Sabilit Taqwa has a very strong and positive relationship
Content Analysis on Potential Character Inclusion in Listening I Course Syllabus and Materials
Authors: Nor Hidayah Nor
Published: April 2019

:   The development of programs of study, learning and teaching resources, lesson plans and assessment of students, and even teacher education are all based on curriculum. It is also related to the integration of character education in the learning process carried out from the planning, implementation, and evaluation of learning in all subjects and it can be adopted in making lesson planning (syllabus, lesson plans and teaching materials). Since character education has recently become an important issue in the Indonesian education system, this research examines the potential incorporation of the character education in Listening 1 course syllabus and materials by doing content analysis. The findings reveal that there are 18 characters of education that can be applied in the syllabus, they are Caring and Compassionate, Creative, Curious, Democratic, Discipline, Empathy, Honest, Inclusion/Communicative, Independent, Love Peace, Love Reading, Love the Nation, Nationalistic, Religious, Responsible, Sportive and Respectful, Tolerant, and Work hard. Those characters are incorporated to the 10 topics (Meeting people for the first time, Families, Numbers, Let’s eat, Free time, Gifts, Part time jobs, Celebration, Invention, and Folktales) and also include in Introduction, Self Study, Expansion, Middle test and Final Test of Listening 1 course materials.
COMPORTAMENTO DO CONSUMIDOR FRENTE À RUPTURA DE ESTOQUE
Authors: Barrichello Alcides , De Aguiar Fernando Henrique Oliveira , Morano Rogério Scabim , Toma Marina Onohara , Fracasso Enzo , De Pinho Franco Lara , Do Amaral Natalia Franco
Published: April 2019

O trabalho tem por objetivo identificar o comportamento do consumidor frente à ruptura de estoque em ponto de venda. Para tanto, foram identificadas ações no comportamento de compra frente à ruptura relacionadas a variáveis fidelidade ao varejo, fidelidade ao preço, compra planejada, compra postergada, compra urgente e abandono da compra. Contatou-se que os consumidores cujo critério de compra é fortemente baseado em preço, tendem a abandonar a compra quando não encontram o produto que costumam comprar; os consumidores que apresentam fidelidade a um canal de compra, tendem a abandonar a compra quando não encontram o produto no canal de costume; os consumidores que planejam suas compras com antecedência apresentam menor probabilidade de abandonar uma compra quando não encontram o produto; e os consumidores que planejam suas compras com antecedência apresentam menor probabilidade de abandonar uma compra quando não encontram o produto.
AS DESVANTAGENS DA UTILIZAÇÃO DE CAPITAL DE TERCEIROS ATRAVÉS DA EMISSÃO DE DEBÊNTURES: CASO ODEBRECHT
Authors: De Oliveira Eduardo César , Jacomossi Rafael Ricardo , Junger Alex Paubel
Published: April 2019

Existem muitos estudos sobre a composição ótima de capital, sendo que a interação entre capital próprio e capital de terceiros de cada empresa irá se modificar conforme o próprio perfil da empresa. Em busca de recursos muitas empresas aderem às subscrições de ações para captação de recursos ao invés de utilizar o capital de terceiros como empréstimos e financiamentos longo prazo e uma terceira via surge: a utilização de debêntures como maneira de financiar as operações das empresas. Este estudo apresenta os conceitos de composição de capital e as desvantagens da utilização da emissão de debêntures como capital de terceiros.
Effect of zinc oxide on liveweight, reproductive organ dimensions and spermatozoa production of Archachatina marginata during dry season
Authors: Abiona John Adesanya , Olaoye Taiwo Gabriel , Abioja Monsuru Oladimeji , Onagbesan Okanlawon Mohammed
Published: April 2019

Demand for Giant African Land Snail in Nigeria is so high such that it is very difficult to meet up with the supply as a protein source. However, during dry season, production at intensive level is often challenged with decline in growth and reproduction despite interventions to boost production. This study therefore evaluates the effect of zinc oxide on liveweight, reproductive organ dimensions and spermatozoa production of Giant African Land Snail (Archachatina marginata) during dry season. Thirty-two (32) snails with an average weight of 100 – 180 g were used for this experiment. The snails were allotted to four different feeding treatments which included concentrate diet only, concentrate +10 mg/kg of zinc oxide, concentrate +15 mg/kg of zinc oxide and concentrate +20 mg/kg of zinc oxide, respectively. Each treatment contained eight replicates. After nine weeks, five snails were selected from each treatment and dissected. Variables monitored were: weekly weight gain, shell circumference, shell length and shell diameter. Other reproductive data collected after dissections were: organ weight, reproductive tract weight, albumen weight, ovo-testis weight, gonado-somatic index (GSI) and spermatozoa concentration. The result showed that dietary zinc oxide significantly (P < 0.001) influenced feed intake, shell parameters, organ weight ovo-testis weight, albumen weight, gonado-somatic index, reproductive tract weight and spermatozoa concentration. Snailsfed zinc oxide supplemented diet had better shell measurements, organ weight, ovo-testis weight, albumen weight, gonadosomatic index and reproductive tract weight. Considering spermatozoa concentration, 10 mg/kg of zinc oxide inclusion into concentrate diet gave the highest concentration. The results of the present study showed that dietary zinc oxide positively influenced feed intake, shell measurements, organ weight, ovo-testis and albumen weight. Similarly, gonado-somatic index and spermatozoa production were also positively influenced. Therefore, 10 mg/kg inclusion of zinc oxide is recommended for better reproductive tract development, and spermatozoa production at the desirable economic level during the dry season production of Archachatina marginata.
Determinants of food price volatility in Nigeria
Authors: Fasanya Ismail Olaleke , Olawepo Feyikunayo
Published: April 2019

In this paper we examined the determinants of food price volatility in Nigeria using monthly data from January, 1997 to April, 2017. We employed the multivariate GARCH approach to evaluate the level of interdependence and the dynamics of volatility across these markets. In particular, the Baba-Engle-Kraft-Kroner (BEKK) model and the Dynamic Conditional Correlation (DCC) model were used for estimation. The findings showed that information shocks originating in Consumer Price Indices (CPI), lending rate, exchange rate and oil market have a direct effect on the current conditional volatility in food market while the information shocks originating in food have a direct effect on the current conditional volatility in all the markets considered except for oil. These results were insensitive to changes in data frequency and different oil price specification. Hence, the government should encourage the use of alternative sources of energy to reduce the effect of high oil prices on food prices and provide soft agricultural credit scheme to farmers with a low lending rate through specialized banks.
The Technique of Optimal Use of Facial Muscles in Trumpet Interpretation
Authors: Horez Iulian
Published: April 2019

Facial muscles have an overwhelming importance in obtaining a special sonority, a perfect instrumental technique. In fact, through their vibration all sonority is produced by these muscles, and the level of professionalism one can reach depends on their degree of efficient use. We shall next analyze the specific issues and modality of use. While playing a mouthpiece instrument, due to the way facial muscle s are used, the following issues arise: exaggerated facial muscles stretching, clamping, undue strain, vibration limitation (by over-pressing, outer reason).
Non-Take-Up of Social Assistance: Regional Differences and the Role of Social Norms
Authors: Hümbelin Oliver
Published: April 2019

This study estimates the prevalence of non-take-up of social assistance using administrative data from the Canton of Bern. Regional variation in non-take-up rates is then used to study the contextual effects of social norms with respect to welfare receipt legitimacy. Social norms are proxied with the degree of urbanity, language regions and communal voter shares of left- and right-wing parties. Multiple regression analysis, extended by several robustness checks, suggests that social norms do indeed have an impact on take-up behavior.
Un/Doing Ethnicity in Intervening Swiss Street-Level Bureaucracy. A Police Service and a Child Welfare Service – an Ethnographic Perspective
Authors: Piñeiro Esteban , Koch Martina
Published: April 2019

The article presents the empirical findings of a multi-site ethnography in two organizations in Swiss street-level bureaucracy. We examined both a municipal child welfare office and the police force of a medium-sized city. The focus was on the question as to whether and how ethnic differentiation takes place in such public agencies and what role it plays at work. The findings suggest that un/doing ethnicity follows an instrumental logic and that it is executed in manifold and ambivalent ways.
Islamophobia or Threat to Secularization? Lost Letter Experiments on the Discrimination Against Muslims in an Urban Area of Switzerland
Authors: Berger Roger , Berger Joël
Published: April 2019

Two explanations for discrimination against Muslims in Switzerland are threat to secularization and xenophobia. We conducted lost letter experiments and find that distinctively religious Muslim groups are indeed discriminated against, although not to a larger degree than Christian sects. Moreover, discrimination against Muslims decreases when there is no reference to religiousness. In sum, the discrimination against Muslims seems mainly to be a result of distinctive religious characteristics attributed to this group.
The Perception of Respondents of Intelligent Packaging in Slovakia as Ecological Innovations
Authors: Loučanová Erika , Parobek Ján , Nosáľová Martina , Dopico Ana
Published: April 2019

The research of new active and intelligent features has shown huge potential to optimise the supply chain and enhance consumer consciousness of food utilisation. The paper deals with the evaluation of the perception of intelligent packaging in Slovakia as ecological innovations through the Kano model. It focuses on to analysis the perception of different intelligent packaging features. The results indicate that customers‟ awareness of intelligent packaging is still at a very low level in Slovakia.