bluuebunny/crossref_metadata_2025 huggingface dataset:
Semantic roles of case relations vs. substantival word-formational categories
Authors: Topolińska Zuzanna
Published: March 2019

The author presents her version of the semantic paradigm of case in Slavic
and states that it is almost identical with the inventory of substantival
word-formational categories.
UPAYA PENINGKATAN KETERAMPILAN BERBICARA DALAM PEMBELAJARAN TEMATIK TERPADU MELALUI PI-MTPS KELAS IV SD
Authors: Suryani Dian
Published: March 2019

Tujuan penelitian ini adalah untuk mengetahui apakah peningkatan keterampilan berbicara tematik terpadu  dapat diupayakan melalui pendekatan inkuiri dan model TPS kelas IV SD semester 2 tahun pelajaran 2017/2018. Jenis penelitian ini adalah penelitian tindakan kelas (PTK), dengan menggunakan model spiral dari C. Kemmis dan Robin Mc. Taggart. Prosedur penelitian menggunakan 2 siklus, masing-masing siklus terdiri dari 3 tahap yakni, 1) perencanaan tindakan 2) pelaksanaan tindakan dan observasi, 3) refleksi. Subyek penelitian adalah siswa kelas IV SDN Tembarak Temanggung dengan 27 siswa yang terdiri dari 14 siswa laki-laki dan 13 siswa perempuan. Teknik pengumpulan data menggunakan observasi yang dilengkapi dengan rubrik pengukuran. Teknik analisis data adalah teknik persentase yakni membandingkan keterampilan berbicara dalam pembelajaran tematik terpadu melalui PI-MTPS antar siklus. Hasil penelitian menunjukkan bahwa terdapat peningkatan keterampilan berbicara tematik terpadu, yang diupayakan melalui PI-MTPS antar siklus, yakni sebanyak 44,4% dari seluruh siswa mencapai keterampilan berbicara tinggi di siklus 1 dan meningkat menjadi 81,4% dari seluruh siswa di siklus 2. Keterampilan berbicara dalam pembelajaran tematik terpadu meliputi keterampilan membuat rumusan masalah, keterampilan mengemukakan pendapat, terampil membaca puisi dengan intonasi, pelafalan dan ekpresi yang tepat serta lancar membaca puisi
PENGEMBANGAN MEDIA SCRAPBOOK PADA PEMBELAJARAN IPA
Authors: Veronica Indah , Whyu Pusari Ratna , Setiawardana M.Yusuf
Published: March 2019

In particular learning in natural science subjects, there are still a number of students who concentrate less on science, even less interested in the learning process, with the problem the researchers conducted research on scrapbook development in science learning. It is expected that with the development of these media students can be motivated and more enthusiastic in learning. The object and subject of this research are third grade students of elementary school. The data of this research are the results of media validation by material experts, media experts, and practitioners and the siwa III response to the developed media. This research uses Research and Development (R & D) research methodology and Borg and Gall development model. Media relevance is obtained from assessment by media experts and material experts. Based on the results of scrapbook media development research in science learning, the media developed proved valid based on the results of media validation by experts and practitioners. Learning media can also be accepted by students as evidenced by student responses taken by questionnaire responses used by researchers.

Keywords: Development, Media, Scrapbook
PENERAPAN PROJECT BASED LEARNING BERBANTUAN REWARD UNTUK MENINGKATKAN AKTIVITAS DAN PRESTASI BERKARYA SENI GRAFIS SISWA
Authors: Sri arisna Made
Published: March 2019

This research is a classroom action research which aims to (1) to increase student activity of class IX.3 SMP Negeri 2 Singarajain even semester of academic year 2017/2018 through implementation of reward-assisted project based learning, and (2) to increase the activity of students of class IX.3 SMP Negeri 2 Singarajain even semester of academic year 2017/2018 in producing graphic arts trough the implementation of Reward-assisted Project Based Learning. The research subjects of this action are the students of class IX.3 SMP Negeri 2 Singarajaat Academic Year 2017/2018 with total number of 36 students. This Class Action Research Design (PTK) follows the model of Stephen Kemmis conducted in two cycles. Each cycle is held in three or two meetings with each meeting 2 X 40 minutes and 1 X 40 minutes. This research data was collected by observation sheet and project test. The collected data were analyzed descriptively qualitative and quantitative descriptive. The result of the research shows that (1) the Implementation of Reward-assisted Project Based Learning can increase the students 'activity in graphic arts learning. Before the action, the students' activity is quite active, the cycle I is still quite active (52%) and in cycle II is more active (89%), (2) the Implementation of Reward-assisted Project Based Learning can improve the achievement of graphic art work. Before the average score cycle is 69.00 (36% completeness). After the action in the first cycle achievement works graphic arts students average score of 75.36 (mastery 53%), while in the second cycle average score of 84.58 (92% completeness).

Keywords: Project Based Learning, Reward, Activity, Activity, AchievementLearning
MENINGKATKAN HASIL BELAJAR PKn MELALUI IMPLEMENTASI KOOPERATIF LEARNING
Authors: Sunarti Ni Nyoman
Published: March 2019

This Classroom Action Research aims to improve student learning outcomes using student learning cooperative learning. The research was carried out in the State Elementary School 3 Mengwi, Badung with the subject of the action of 1 teacher and the recipient of the action subject were 25 grade VI students. This research was conducted in 3 cycles, each cycle using action procedures, namely planning, implementing actions, observing and reflecting. Based on the results of classroom action research on cooperative learning to improve the understanding of fifth grade students of SD No. 1 in the 2015/2016 school year in PKn learning, it was quite effective, which took place in 3 cycles. In the first cycle of student activity 50% of students did not get used to cooperative learning and there were still less interested in discussing. Teacher activity is classified as low with a score of 51.11% and student learning outcomes of 52%, therefore research was conducted in the second cycle with the acquisition of scores on student activities 70% and teacher activities 68.44%, while student learning outcomes in this cycle increased to 76%. Because researchers are not satisfied, there are still students who have not been optimally involved in the process of interaction with the group, so research was conducted in cycle III, with student activity results increasing to 100%, teacher activities becoming 88.44%, and student learning outcomes becoming 100%. From the results of this study it can be concluded that the use of the Cooperative Learning approach can improve PKn learning outcomes of students of ASEAN teaching material at SD No 3 Mengwi.

Keywords: Cooperative Learning, PKn
UPAYA MENINGKATKAN KETERAMPILAN MEMBACA WACANA BERAKSARA BALI MELALUI PENERAPAN MODEL PEMBELAJARAN KOOPERATIF THINK-PAIR-SHARE
Authors: Perni Ni Nyoman
Published: March 2019

The main objectives of the study were: (1) improving the reading skills of Balinese-language discourse in class IX B4 Singaraja Public Middle School 6 semester 2018/2019 academic year, and (2) knowing the responses of class IX B4 Singaraja Public Middle School 6 semester academic year 2018/2019 towards the application of the Think-Pair-Share Cooperative learning model. This research is a classroom action research consisting of two cycles. Each cycle consists of 4 stages, namely: planning, action, observation / evaluation, and reflection. The subjects of this study were class IX B4 Singaraja Public Middle School 6 2018/2019 academic year as many as 31 students. Data on students' skills in reading Balinese-language discourse was collected through skills tests and data on student responses to the application of learning models collected through questionnaires at the end of cycle II. Data collected was analyzed descriptively. The results showed that: (1) the application of the Think-Pair-Share learning model can improve students' skills in reading Balinese literary discourse, namely from the average value of 79 (good) in the first cycle to 85 (very good) in the second cycle, and (2) student responses to the application of the Think-Pair-Share learning model are classified as very positive.

Keywords: Cooperative Think-Pair-Share, Balinese literary discourse.
The Influence of Transformational Leadership on Organizational Commitment and Job Satisfaction with Procedural Justice as Mediating Variable
Authors: Jaya Rico Saktiawan
Published: March 2019

The purpose of this research is to test the influence of transformational leadership on organizational commitment and job satisfaction with procedural justice as mediating variable. The role of the leader is very important given the nature of the leadership taken by these leaders can exert influence on employee commitment and job satisfaction, building on the principles of justice. This study uses a quantitative approach using a survey method and questionnaire instruments. Sampling of this research using purposive sampling that employees who have worked at least two years and subordinate superintendent in Coal and Processing Handling Division (CPHD) PT KPC. Hypothesis testing is conducted using hierarchical regression methods to test mediation in accordance with the rules of Baron and Kenny (1986). Questionnaire data processing taken by SPSS Statistics 21. The results of this study indicate that procedural justice is partially mediates the influence of transformational leadership on organizational commitment and job satisfaction.
Antecedents of online purchasing behavior Antesenden perilaku pembelian secara daring
Authors: Kuswati Rini , Saleha Amalia
Published: March 2019

Abstract : This study aims to determine the effect of information quality, service quality, as antecedent of  online purchasing decision behavior. The population in this study is consumer  who had been shopping for products or goods through the sale and purchase site of tokopedia.com. This study using 100 respondents, sampling technique with purposive sampling method. The paradigm of this study is positivism and using survey as design research. Data analyzed in this research includes measurement test, normality test, multicollinearity test and heteroskedastisity test. Hypothesis  testing  using  multiple linear regression analysis, t-test, F test, and the value  of coefficient of determination (R²). The results showed that the quality of information has a positive and significant effect on the behavior of online purchasing decisions. Service quality variable have positive and significant effect to online purchasing decision behavior. Confidence variables have a significant and negative effect on online purchase decision behavior. Simultaneously the quality of information, service quality, and trust have a significant influence on the behavior of purchasing decision. The variance of independent variables in explainable  online decision are  17,4% and the rest explained by other variable outside of this research.Abstraksi : Penelitian ini bertujuan untuk mengetahui pengaruh kualitas informasi, kualitas layanan, sebagai anteseden perilaku keputusan pembelian online. Populasi dalam penelitian ini adalah konsumen yang telah berbelanja produk atau barang melalui situs jual beli tokopedia.com. Penelitian ini menggunakan 100 responden, teknik pengambilan sampel dengan metode purposive sampling. Paradigma penelitian ini adalah positivisme dan menggunakan survei sebagai penelitian desain. Analisis data dalam penelitian ini meliputi uji pengukuran, uji normalitas, uji multikolinearitas dan uji heteroskedastisitas. Pengujian hipotesis menggunakan analisis regresi linier berganda, t-test, uji F, dan nilai koefisien determinasi (R²). Hasil penelitian menunjukkan bahwa kualitas informasi memiliki pengaruh positif dan signifikan terhadap perilaku keputusan pembelian online. Variabel kualitas layanan berpengaruh positif dan signifikan terhadap perilaku keputusan pembelian online. Variabel keyakinan memiliki pengaruh yang signifikan dan negatif terhadap perilaku keputusan pembelian online. Bersamaan dengan itu kualitas informasi, kualitas layanan, dan kepercayaan memiliki pengaruh yang signifikan terhadap perilaku keputusan pembelian. Varians variabel independen dalam keputusan online yang dapat dijelaskan adalah 17,4% dan sisanya dijelaskan oleh variabel lain di luar penelitian ini.
ANTIBACTERIAL ACTIVITY OF ETHANOLIC EXTRACT AND INFUSE OF Bauhinia variegata LEAVES AGAINST Streptococcus pyogenes
Authors: Sholihah Istiqamatush
Published: March 2019

Bauhinia variegata is a plant that has many virtues and widely grown in Indonesia. Yet the virtues and uses are still limited as the shade and ornamental plant. The purpose of this study is to determine the antibacterial ethanol extract activity and the infuse of Bauhinia Variegata leaves toward Streptococcus pyogenes and to determine the classes of compounds that have antibacterial activity. Bauhinia variegata leaves are extracted by maceration and infundation with 96% ethanol and distilled water. The test method of antibacterial activity is used disc difusson Kirby Bauer methods. The Analyses of the compounds which are contained in the Bauhinia Variegata leaves are done by TLC (Thin Layer Chromatography) and test tubes. The results showed that ethanol extract and infuse of Bauhinia Variegata leaves has no antibacterial activity toward Streptococcus pyogenes. TLC results and test tubes showed that the ethanol extract of Bauhinia Variegata leaves contain tannins, saponins, terpenoids, and alkaloids. While, the infuse of Bauhinia variegata leaves are saponins and alkaloids. Keywords: Bauhinia variegata, antibacterial, Streptococcus pyogenes, maceration, infundation.
Kajian Drug Related Problems (DRPs) Terhadap Pengobatan Pasien Stroke Iskemik di Rumah Sakit Pusat Otak Nasional Jakarta Periode Januari – Desember 2015 S
Authors: Meila Okpri , Rochana Handika Indri
Published: March 2019

This study aims to determine the percentage of DRPs of ptients with ischemic stroke at Brain Center National Hospital Jakarta. Based on data from the WHO 2006, each year there are approximately 13 million new stroke patients of which approximatelly 4,4 million of them die within 12 months.When patients undergo a treatment, most patients achieve optimal results that heal diseases suffered by patients but not least the failure in therapy. Therefore, the contribution required to identify, resolve and prevent problems in drug therapy known as Drug Related Problems (DRPs). The method used in this study is cross sectional. Total sample data obtained as many as 360 samples. The results showed indications without drugs of 55.62%, drugs without indication of 15.17%, drug interactions of 10.11%, patients fail to receive the drug of 7.86%, side effects of 6.18% and less drug selection right of 5.06%. Data show that the highest percentage of DRPs are indications without drugs.
Pengaruh Ekstrak Etanol Daun Murbei (Morus Alba L.) dengan Glibenklamid Terhadap Ekspresi Gen CYP3A4 pada Kultur Sel HepG2
Authors: Nuralih Nuralih , Churiyah Churiyah , Pambudi Sabar , Tamat Swasono R. , Meila Okpri
Published: March 2019

Mulberry leaf is a traditional herb and predicted has ecdysteronecompound which act as antihyperglicemid. Glybenclamide is a synthetic medicine used to cure diabetes mellitus type 2. The leaf reported as competitive inhibitor of CYP3A4 enzyme, which metabolizingglibenclamide. However, in many cases, combination of herbs with synthesis drugs causes interaction if used at the same time. This research aimed to see interaction of ethanol mulberry leaf extract with glibenclamide through CYP3A4 gene expression in HepG2 cell culture.Sample of mulberry extract, glibenclamide, and combination both sample were tested into cell HepG2 culture. Then RNA were isolated and purification using real time PCR to see the gene CYP3A4 expression. As a result, mulberry extract acts as inhibitor enzyme CYP3A4, while glibenclamide is enzyme substrate.The combination of mulberry and glibenclamide showed increased of expression of CYP3A4 gene, means greater enzyme produced, and lower medicine on blood plasma.
Uzaktan Öğrenenlerin Sosyal Medya Kullanımlarına Yönelik Bir Araştırma: AöfAnadolum Örneği
Authors: USTA İlker , UĞUR Serap , OKUR Muhammet Recep , KUŞ Gökhan
Published: March 2019

Facebook Türkiye’de üniversite öğrencileri arasında
en yaygın kullanılan sosyal paylaşım ağı olarak, bireylerin birbirleriyle etkileşim
sağladıkları ortamlardan biridir. İlk kez 1960’lı yılların başlarında iletişim
araştırmaları için kullanılan, kullanım ve doyumlar yaklaşımı; kullanıcıların
aktif olduğunu vurgulayan ve “medya insanlara ne yapıyor” sorusundan çok,
“insanlar medya ile ne yapıyor?” sorusuna odaklanarak kullanıcıların bilinçli
katılımcılar olduğunu savunmuştur. Kullanımlar ve doyumlar kuramında
kullanıcılar iletişime gerekli olduğu için değil gönüllü olduğu için
girmektedirler. Bu araştırmada Anadolu Üniversitesi Açıköğretim Sistemi
kurumsal Facebook sayfası olan AofAnadolum sosyal medya ortamı, kullanımlar ve
doyumlar yaklaşımı bağlamında incelenmiştir. Araştırma betimsel tarama yöntemi
ile gerçekleştirilmiştir. Veriler, 3 Şubat 2016-28 Şubat 2017 tarihleri
arasındaki Facebook tarafından sağlanan “sayfa istatistikleri” bölümünden elde
edilen verilerle sınırlıdır. Bu çerçevede Açıköğretim sistemi sosyal medya
hesabının kullanım durumu çeşitli değişkenler açısından incelenerek takipçilerinin
demografik özellikleri, kullanım durumlarındaki değişim ve takipçilerin
paylaşımlara gösterdikleri duygusal tepkiler belirlenmeye çalışılmıştır. Elde
edilen sonuçlar, kurumun sosyal medya ortamını bilgi verme amacıyla kullanmakta
olduğunu, takipçilerin ise daha çok enformasyon alma ve destek görme amacıyla
kullandığını, takipçilerin sınavlar ve sorular ile ilgili paylaşımlara ilgi
gösterdiğini ve tepkilerini bu ortamdan paylaştıklarını ortaya koymuştur.
İşitme Kayıplı Öğrencilerin Sosyal Bilgiler Dersine Yönelik Strateji Kullanımının Desteklenmesi
Authors: AKAY Elif
Published: March 2019

Sosyal Bilgiler; problem
çözme, karar verme ve araştırma becerilerinin gelişimini amaçlayan bir derstir.
Bu nedenle öğrencilerin akademik
gelişimlerini izleyebilmeleri, bilgiyi kavrayıp transfer edebilmeleri ve
problemlere çözüm üretebilmeleri için Sosyal Bilgiler dersi stratejilerini
kullanabilmeleri gerekmektedir. Bu araştırmanın amacı, kaynaştırma ortamındaki
işitme kayıplı öğrencilerin Sosyal Bilgiler dersi stratejilerinin nasıl
desteklendiğini ortaya koymaktır. Araştırmada bütüncül tek durum deseni
kullanılmıştır. Veriler gözlemler, görüşmeler, belgeler, araştırma günlüğü ve
süreç ürünleri ile toplanmıştır. Strateji kullanımına odaklanılarak
gerçekleştirilen sosyal bilgiler destek özel eğitim hizmetinin, kaynaştırma
ortamındaki işitme kayıplı öğrencilere bilgiyi sınıflandırarak,
ilişkilendirerek, çıkarımlarda bulunarak ve olayların oluş zamanına göre
sıralayarak anlamlandırmalarında katkı sağladığı görülmüştür.
Öğretmenler Ne Zaman ve Nasıl Yetkin Bir Uzman Olurlar: Coğrafya Öğretmenleri Örneği
Authors: ÖZTÜRK Mustafa , GÖNÜLAÇAR Hasan
Published: March 2019

Öğretmenler
mesleki yaşantılarına benzer şartlarda; acemi (novice) bir şekilde başlarlar.
Ancak yetkin bir uzmanlığa ulaşmak her öğretmen için mümkün olmayabilir. Bu
çalışmada coğrafya öğretmenleri örneğinden hareketle, Türkiye'de öğretmenlerin
yetkin uzman olma süreci; buna bağlı olarak ilerleyen kariyer gelişimleri ve bu
süreçte mesleklerini nasıl öğrendikleri irdelenmiştir. Çalışmaya Türkiye’nin farklı illerinde ve
farklı lise türlerinde görev yapan, hizmet süresi on beş yıl ve üzeri olan
toplam yirmi beş coğrafya öğretmeni katılmıştır. Çalışmada
veri, yarı-yapılandırılmış görüşme tekniği ile toplanmış ve QDA Miner Lite 2.0.5 nitel analiz
programıyla içerik analizine tabi tutulmuştur. Elde edilen bulgulara göre,
katılımcıların birçoğunun mesleğe çok kolay bir başlangıç yapmadıkları,
öğretmenliği temel olarak rol model aldıkları eski bir öğretmenlerinden ve
kendi deneyimlerinden hareketle öğrendikleri belirlenmiştir. Katılımcıların
mesleki gelişimlerine yönelik motivasyonlarının genellikle düşük olduğu ve mesleki
gelişimleri bakımından farklı paydaşlardan yeterli desteği görmedikleri ortaya
çıkmaktadır. Katılımcıların çalışmada betimlendiği şekilde yetkin uzmanlığın
ölçütlerini tam olarak karşılamadıkları ancak hâlihazırda şu üç kariyer aşamasına
yönelik yetkinliklere sahip oldukları anlaşılmaktadır: Acemilik dönemi,
uzmanlığa geçiş dönemi ve uzmanlık dönemi.
Extraction and Partial Purification of Protease from Bilimbi (Averrhoa bilimbi L.)
Authors: Ismail Normah , Mohamad Kharoe Nur' Ain
Published: March 2019

Unripe and ripe bilimbi (Averrhoa bilimbi L.) were ground and the extracted juices were partially purified by ammonium sulfate precipitation at the concentrations of 40 and 60% (w/v). The collected proteases were analysed for pH, temperature stability, storage stability, molecular weight distribution, protein concentration and protein content. Protein content of bilimbi fruit was 0.89 g. Protease activity ofboth the unripe and ripe fruit were optimum at pH 4 and 40°C when the juice were purified at 40 and 60% ammonium sulfate precipitation. A decreased in protease activity was observed during the seven days of storage at 4°C. Molecular weight distribution indicated that the proteases protein bands fall between IO to 220 kDa. Protein bands were observed at 25, 50 and 160 kDa in both the unripe and ripe bilimbi proteases purified with 40% ammonium sulfate, however, the bands were more intense in those from unripe bilimbi. No protein bands were seen in proteases purified with 60% ammonium sulfate. Protein concentration was higher for proteases extracted with 40% ammonium sulfate at both ripening stages. Thus, purification using 40% ammonium sulfate precipitation could be a successful method to partially purify proteases from bilimbi especially from the unripe stage.
Simple Modification Measurement of Photodegradability of Polymers by using Photo-induced Chemiluminescence Technique
Authors: Zakaria Siti Farhana , Millington Keith R
Published: March 2019

Polymers and organic materials that are exposed to sunlight undergo photooxidation, which leads to deterioration of their physical properties. To allow adequate performance under outdoor conditions, synthetic polymers require additives such as antioxidants and UV absorbers. A major problem with optimising polymer formulations to maximise their working life span is that accelerated weathering tests are empirical. The conditions differ significantly from real weathering situations, and samples require lengthy irradiation period. Degradation may not be apparent in the early stages of exposure, although this is when products such as hydroperoxides are formed which later cause acceleration of oxidation. A simple way of quantifying the number of free radicals presents in organic materials following exposure to light or heat is by measuring chemiluminescence (CL) emission. Most polymers emit CL when they undergo oxidative degradation, and it originates from the bimolecular reaction of macroperoxy radicals which creates an excited carbonyl.
Spatial Autocorrelation in the Study of Neighbourhoods towards Smart Cities: Empirical Evidence from Kerman, Iran
Authors: Hosseini Asra
Published: March 2019

From earliest cities to the present, spatial division into residential zones and neighbourhoods is the universal feature ofurban areas. This study explored issue ofmeasuring neighbourhoods through spatial autocorrelation method based on Moran's I index in respect of achieving to best neighbourhoods' model for forming cities smarter. The research carried out by selection of 35 neighbourhoods only within central part of traditional city of Kerman in Iran. The results illustrate, 75% ofneighbourhoods, area in the inner city of Kerman had clustered pattern, and it shows reduction in Moran's index is associated with disproportional distribution of density and increasing in Moran's I and Z-score have monotonic relation with more dense areas and clustered pattern. It may be more efficient for urban planner to focus on spatial autocorrelation to foster neighbourhood cohesion rather than emphasis on suburban area. It is recommended characteristics of historic neighbourhoods can be successfully linked to redevelopment plans toward making city smarter, and also people's quality of life can be related to the way that neighbourhoods' patterns are defined.
Electrical Resistivity, Thermal Stability and Tensile Strength of Rice Husk Flour-Plastic Waste Composites
Authors: Bahari Shahril Anuar , Kamlon Kamrie , Abu Kassim Masitah
Published: March 2019

In this study, the rice husk flour-plastic waste composites (RPC) was produced from polypropylene (PP) and high density polyethylene (HDPE) wastes with 30 and 50% rice husk flour (RHF) contents. RPC was made by melt compounding and compression moulding processes. The electrical resistivity, thermal stability and tensile strength of RPC were determined. The RPC was tested in electrical resistivity and tensile strength according to the ASTM D-257 and ASTM D-638 respectively, while thermal stability was tested using thermogravimetric analysis (TGA) method. From the results, high content of RHF reduces all properties, except for tensile modulus of elasticity (TMOE) in tensile strength test. The ability of moisture absorption and the presence of hemicelluloses, cellulose and silica in RHF reduce the electrical resistivity and thermal stability behaviour of RPC from 50% RHF. The good binding elements and filler agglomeration in RPC from 50% RHF improve only TMOE. Insufficient stress transfer and rigid interphase occurred between RHF and plastics during tensile maximum load and elongation at break (Eb) in tensile strength test. In general, RPC from HDPE indicates better thermal stability, tensile modulus ofrupture and Eb (in tensile strength test) compared to PP, based on the good behaviour of thermal conductivity, low water absorption, high molecular weight and good elongation properties of HDPE. However, RPC from PP shows good electrical resistance due to the low thermal expansion coefficient of PP.
Táctica de política. Pequeños cambios para mejorar la gerencia pública
Authors: Meza Oliver , Moreno Jaimes Carlos
Published: March 2019

No poca bibliografía apunta las dificultades políticas, presupuestales y de organización, que tiene la administración pública en México. Sin embargo, no se ha observado ni de manera sistemática ni suficiente las formas existentes para hacer frente a esas barreras. ¿Qué tipo de acciones tienen los gerentes públicos en sus repertorios para incrementar la eficacia de los programas que administran? En este trabajo, se identifica una forma que hemos dado en llamar táctica de política, por medio de la cual los gerentes públicos toman ventaja de la interacción entre la ciudadanía y los agentes del Estado para aprovechar la discrecionalidad burocrática a favor de la eficacia de la misma política. El artículo pretende definir las tácticas de política, ilustrar con un caso real cómo éstas se observan en la práctica y ofrecer vías alternas para mejorar la eficacia de las políticas, usando la discreción de los operadores de forma instrumental.
Examining Different Factors of Income Tax Non-Compliance in a Small Sample in Bangladesh
Authors: In Tishar Ashir , Hasanuzzaman Syed
Published: March 2019

Income tax non-compliance is worldwide delinquent and with the small volume of income tax collection Bangladesh has been facing its demerits for a long time. There is still a gap to measure income tax non-compliance behaviour in a micro direct approach. This study uses EVSCALE instrument to calculate the individual income tax non-compliance as a latent variable. The instrument consists of 15 items in Likert scale to measure the non-compliance behaviour of a person. The objective of this study is to identify the determinants of income tax non-compliance and key factors of EVSCALE in Bangladesh. The study collected opinions of taxpayers by primary data collection following a convenient sampling method. Logit regression analysis finds out that log monthly income, tax morale, tax education and occupation significantly influence income tax non-compliance. Exploratory factor analysis identifies six key factors that have consistency and shared variance. However, Cronbach’s alpha shows that five key factors have high reliability among six factors. According to rules of thumb, this study suggests that EVSCALE instrument needs modification by adding more items. This study argues that increasing participation in taxation system is a feasible policy for government instead of increasing tax rate.
Evaluación del comportamiento de un yacimiento de crudo pesado mediante la aplicación de la técnica THAI “Toe To Heel Air Injection”
Authors: Sepúlveda Jairo Antonio , Montaña William Fernando
Published: March 2019

Esta investigación fue diseñada para verificar resultados expuestos en la literatura técnica petrolera sobre la implementación de técnicas de recobro de crudo pesado y bitumen, y como complemento de algunas investigaciones realizadas previamente. En este documento se presenta el estudio y análisis de la evaluación del comportamiento de un yacimiento de crudo pesado mediante la técnica THAI por sus siglas en inglés (Toe-To-Heel Air Injection) que traduce inyección de aire desde el dedo hasta el talón del pozo productor horizontal. La simulación fue realizada en un simulador termal (Eclipse-Office), teniendo en cuenta que este proceso es de recuperación térmica, aplicado en crudos pesados y bitumen donde es necesario involucrar variables termodinámicas, termoquímicas, químicas, fisicoquímicas y este quiométricas. En la primera parte del contenido de esta investigación se analiza la selección de la configuración de pozos más exitosa para implementar en un piloto. Posteriormente al obtener el resultado del análisis anterior se evalúa y analiza el impacto que tienen algunas propiedades importantes de los yacimientos de crudos pesados en el recobro, tales como espesor, porosidad, saturación inicial de aceite, relación de permeabilidades, permeabilidad horizontal, profundidad y presión de yacimiento. La segunda parte consiste en el estudio de las condiciones operacionales de la técnica THAI en un yacimiento definido. Como tercera parte se diseñó un yacimiento con dos capas continuas productoras para analizar el efecto de la heterogeneidad en el desarrollo de la técnica THAI, donde se analizó el impacto en el recobro y en la producción de crudo. También se comparó el comportamiento de la producción del yacimiento de crudo pesado en producción en frio, con el mismo yacimiento aplicándole la técnica THAI. Por último se diseñó un yacimiento con dos pares de pozos para analizar el comportamiento de la técnica en un campo.
Caracterización de propiedades fisicoquímicas de los suelos de la zona Cafetera del municipio de Isnos con el fin de establecer su aptitud de uso y manejo
Authors: Torrente T. Armando , Ladino P. Álvaro
Published: March 2019

Con el propósito de caracterizar las propiedades de los suelos de la zona cafetera del municipio de Isnos, estableciendo su aptitud de uso y manejo, se tomaron como referentes los perfiles de suelo identificados según clasificación de la Federación Nacional de Cafeteros (1985), comprendiendo las unidades cartográficas del Ecotopo Cafetero 214B: San Agustín (Melanudands); Isnos (Basaltos); El Mortiño (Dystropets); Saladoblanco (Toba Volcánica); Magdalena (Lithic Ustorthent), entre otras. Además se analizaron y recomendaron 300 muestras de suelos aleatorias (2008), en el Laboratorio Multilab Agroanalitica de CENICAFE, para la fertilización del cultivo. Se utilizaron aerofotografías y software Autocad, Surfer y Arcgis para la georeferenciación en un mapa base y así crear mapas de variabilidad espacial por cada parámetro evaluado en los análisis de suelos, que junto al manejo estadístico permitió apreciar la variabilidad físico-química y homogenizar los suelos por unidad. El ecotopo corresponde principalmente a entisoles e inceptisoles, con pH ácidos adecuados al cultivo de café, altos contenidos de materia orgánica, texturas moderadamente pesadas, deficientes en fósforo, sin mayores restricciones en los demás elementos. En dos sectores se presentaron altos valores de aluminio, correlacionados con baja concentración de calcio, magnesio y pH. La clasificación agrológica del IGAC, permitió determinar que las unidades de suelos son aptas para la explotación agrícola, excepto la unidad Magdalena. Principalmente se ubican en las clases II y III, exigiendo prácticas moderadas de manejo y conservación de suelos. Esta clasificación se plasmó en un mapa a escala 1: 25000.
Efecto del flujo no Darcy y el desequilibrio en transferencia de masa sobre el comportamiento de la productividad de pozos en yacimientos de gas condensado
Authors: Montalvo Monje Eduardo , Lancheros Carlos Andrés
Published: March 2019

Para el flujo de fluidos a través de un medio poroso a bajas o moderadas tasas, la caída de presión en la dirección del flujo es proporcional a la velocidad del fluido, y la expresión matemática utilizada para su modelamiento es la ley de Darcy (flujo laminar). A tasas de flujo más altas, además del efecto de la viscosidad representado en la ecuación de Darcy, hay una fuerza inercial actuando y se debe a que las partículas del fluido se mueven a distintas velocidades en su trayectoria a través del medio poroso. Bajo estas circunstancias la ecuación de flujo apropiada es la de Forchheimer (flujo turbulento). Desde el punto de vista del fenómeno de transferencia de masa, en simulación de yacimientos, se asume un equilibrio termodinámico instantáneo entre los fluidos. En la región cercana al pozo, lugar en donde se presentan altas caídas de presión y altos caudales de flujo, éstos no pueden dar tiempo para que dicho equilibrio termodinámico ocurra. El líquido puede ser transportado en forma de nube (spray) en la fase gas. Si éste fuera el caso, la cantidad de líquido condensado en la región cercana al pozo podría ser baja, según la predicción de los simuladores; sin embargo los resultados de la simulación pueden llegar a sobreestimar la productividad del pozo. Hoy en día, este fenómeno puede ser modelado con la existencia de los simuladores de yacimientos, junto con la introducción de ecuaciones de estado (EOS). En este estudio se realizó el modelamiento de los efectos del flujo no darcy y del desequilibrio en transferencia de masa sobre el comportamiento de la productividad de pozos en yacimientos de gas condensado, utilizando el simulador Eclipse 300. Se estructura un modelo composicional, bidimensional, bifásico, radial, bloques centrados, usando la ecuación de estado de Peng-Robinson, para evaluar el comportamiento de la presión de fondo de pozo (BHP), el perfil de saturación de condensado y el comportamiento de las permeabilidades relativas.
Evaluación de algoritmos para estimar la derivada de presión en pruebas de pozos
Authors: González López Rubén Alberto
Published: March 2019

Aunque hay muchos métodos para hallar la función derivada que brindan buenos resultados en otros escenarios, en ocasiones la naturaleza discreta de las curvas de presión de pozo hacen que el procesamiento de éstas no sea adecuado. Además el ruido que le imprimen a la prueba las herramientas con la que se adquieren los datos y otros fenómenos naturales ajenos al yacimiento, dificulta el análisis y la posterior interpretación de la prueba. Para determinar la función derivada de presión, es bastante común encontrar en la literatura los métodos de Bourdet, Simons y Horne. Últimamente se han utilizado con gran éxito algoritmos polinomiales como el de Spline y otros, no sólo, para hallar la función derivada de presión si no también, para filtrar los datos de la prueba de presión y así poder disminuirlas sobre presiones anormales que muchas veces hacen que éstas no se puedan interpretar. Laexploracióndelosmétodospolinomialeshanpermitidoevaluarloscualitativaycuantitativamente para compararlos con casos teóricos y de campo. Los métodos de mínimos cuadrados móviles y Savitzky – Golay se aplican tanto como filtro y como método derivativo. Así mismo, el método de la familia de los Spline, el Spline Periódico. En todos ellos el arreglo de puntos P vs t se divide en tramos más pequeños ya que ninguna curva de presión se ajusta a una función polinómica. El método de Savitzky – Golay, es muy útil como filtro para reducir el ruido de las pruebas, aunque utilizándolo para hallar la derivada, presentó inconsistencias en la parte del almacenamiento de la prueba, pero para tiempos tardíos resultó ser bastante apropiado. El método de mínimos cuadrados móviles, es recomendable para hallar la función derivada de presión, aunque basta que el polinomio de aproximación sea de grado 3 mientras que la ventana de los datos tratados se recomienda que sea grande. Por último, el método de Spline Periódico no se recomienda para determinar la derivada de pruebas de presión, pues los datos que se obtienen no muestran una tendencia satisfactoria.
Modelamiento termodinámico de los inhibidores de hidratos de gas (metanol) como formadores de depositaciones inorgánicas en sistemas de hidrocarburos
Authors: Castillo Benavides Carlos Iván , Chiriví Tenjo Jhon Alexander
Published: March 2019

El presente estudio modela el efecto causado al adicionar un inhibidor de hidratos de gastermodinámico como el metanol, en la formación de depositaciones inorgánicas de barita, calcita, halita, y eso y celestita. Para ello se utilizaron como fuentes bibliográficas diversos artículos publicados por la Sociedad de Ingenieros de Petróleos – SPE- y artículos publicados por investigadores de la Universidad de Rice en la SPE. Para modelar este efecto, se realizó una herramienta de cómputo en lenguaje de programación visual basic 6.0 denominada “OilScaleInhibidor”, que fue adicionada al programa “OilScale” desarrollado por el grupo de investigación de comportamiento de fases de la Universidad Surcolombiana COFA. La función de esta herramienta de cómputo, es predecir las depositaciones inorgánicas de barita, calcita, halita, yeso y celestita ocasionadas al adicionar metanol en sistemas gas/metanol/agua/sal.  La herramienta de cómputo OilScaleInhibidor, posee una exactitud aceptable en la predicción de las depositaciones inorgánicas ocasionadas por el efecto de adicionar inhibidor de hidratos de gas. Los valores obtenidos de índice de saturación mediante las diferentes fuentes analizadas generaron errores promedio absolutos de 8.5 %.
Fundamentos para la instrumentación y calibración de equipos en una batería de producción
Authors: López M. Juan Carlos , Tovar l. Mario Alberto , Hernández M. Jairo
Published: March 2019

Este artículo se refiere al proyecto que se presentó al personal que labora en la compañía HYDROCARBON SERVICES LTDA., así coma a los contratistas a quienes se suministró la información suficiente acerca de los procedimientos de calibración de los principales instrumentos que se encuentran en una batería. También el proyecto cuenta con una base teórica que provee a las estudiantes de ingeniería de petróleos una excelente guía. Teniendo presente la anterior, se aclarara la importancia de mantener calibrados los instrumentos de medición y la realización de calibraciones de carácter preventivo para no solo garantizar que el proceso se ha llevado a cabo con mediciones precisas sino también para evitar las pérdidas por fallas en las equipos. Al enunciar los requisitos exigidos por la NTC-ISO-IEC 17025 (requisitos generales para el servicio en laboratorios de calibración y ensayo) se muestra cuáles son las características con que debe contar un laboratorio que preste los servicios de calibración a los instrumentos patrón, con las cuales se realizaran la calibración de los instrumentos en la batería. Finalmente se cuenta con la descripción  de los principales instrumentos con que cuenta una batería y sus procedimientos de calibración conforme a las normas de seguridad y lineamientos del sistema de calidad de la compañía HYDROCARBON SERVICES LTDA.
ТЕОРЕТИЧНІ АСПЕКТИ МОДЕЛЮВАННЯ НАЦІОНАЛЬНОЇ ЕКОНОМІКИ ЗАСОБАМИ ЕКОНОМІЧНОЇ КІБЕРНЕТИКИ ТА БІЗНЕС-ІНФОРМАТИКИ
Authors: Chornyi Oleh
Published: March 2019

Стаття містить аналіз впливу розвитку технологій на можливості моделювання національної економіки.
З‘ясовано, що розробка сучасного програмного забезпечення, пов’язаного з економікою, прямо впливає на покращення процесів підзвітності та прозорості ведення економічної діяльності. Бізнес-інформатика та впровадження нових технологій мають масовий характер. Було проаналізовано, що економічна кібернетика більше пов‘язана з моделюванням економічних систем. Обидві дисципліни характеризуються міждисциплінарністю та перебуває на перетині економічної науки та комп’ютерної науки. У зв‘язку з цим постає проблема великомасштабної інтеграції та моделювання взаємодії економічних систем з іншими суспільними системами, для відображення всіх суттєвих факторів впливу на національну економіку.
FORMATION OF CORPORATE SOCIAL RESPONSIBILITY
Authors: Tkachenko Nataliia , Seliverstova Liudmila
Published: March 2019

The article deals with an approach to strategy of formation of corporate social responsibility of enterprises. The proposed approach will allow the enterprises with the limited budget to plan and achieve good results for the social environment.
СТАН ТА ТЕНДЕНЦІЇ РЕГУЛЮВАННЯ РОЗВИТКУ ГАЛУЗЕЙ МОРСЬКОГО ГОСПОДАРСТВА ТА КРУЇЗНОГО ТУРИЗМУ
Authors: Vdovenko Nataliіa , Pavlenko Marina
Published: March 2019

У статті висвітлено вітчизняний та світовий досвід у підходах до регулювання та розвитку галузей морського господарства та круїзного туризму як складової реалізації політики модернізації національної економіки. Викладено результати аналізу попередніх досліджень та поглиблене обґрунтування підходів щодо оцінки сучасного стану розвитку галузей морського господарства та круїзного туризму. Доведено, що збалансований розвиток галузей морського господарства сприяє забезпеченню координуючої ролі держави в реалізації національної туристичної політики із застосуванням принципів та методів регулювання, концентрації ресурсів держави на пріоритетних завданнях функціонування цієї сфери, заходів формування та розвитку інформаційної системи в круїзному туризмі та поступовій її інтеграції до світової інформаційної туристичної мережі в сучасних умовах.
John de Gruchy’s Understanding of the Kingdom of God as Articulated in “The Church Struggle in South Africa”
Authors: Dreyer Wim
Published: March 2019

In 2019, John W. de Gruchy turns 80 and it will be 40 years after his influential The Church Struggle in South Africa was published. This contribution reflects on the last chapter of De Gruchy’s book, titled The Kingdom of God in South Africa. In this chapter, De Gruchy engages with well-known theologians such as Niebuhr, Bonino, Barth, Bonhoeffer, Pannenberg and Moltmann. He enters into conversation with liberation theologians from South America and Africa. His interpretation of the kingdom of God within the context of South Africa, with all its socio-political challenges, became a seminal text in the theological critique of apartheid. De Gruchy concludes with a “theology of hope” with reference to Bonhoeffer’s letters from prison in which he reflects on Christian hope.
Attitudes to Evidence-Based Practice among Social Work Practitioners in South Africa
Authors: Booysen Frederik , Mbecke Paulin , De Gouveia Amanda , Manomano Tatenda , Tanga Pius
Published: March 2019

The implementation of evidence-based social work practice is an international priority. Attitudes to evidence-based practice are instrumental in its dissemination and active implementation. This paper, the first of its kind, explores the nature and correlates of attitudes to evidence-based practice among social work practitioners in South Africa, based on a descriptive statistical analysis of data from a small online survey. In terms of results, the Evidence-Based Practice Attitude Scale suggests that respondentsâ€™ attitudes to evidence-based practice are generally positive. One exception is the requirements sub-scale, where performance indicates some resistance to a regulatory or authoritarian approach to the implementation of evidence-based social work practice. Furthermore, the limited evidence presented here shows that more experienced social work practitioners are less inclined to adopt prescribed evidence-based practice. Moreover, they find such practice less appealing, and are less open to implementing new structured and manualised interventions. With regard to recommendations, it is proposed that training in evidence-based practice be incorporated into continuous professionalÂ development programmes for social work practitioners. In addition, studies of this nature should be replicated on a more comprehensive and representative scale in South Africa and other developing countries.
Branched Kissing Loops for the Construction of Diverse RNA Homooligomeric Nanostructures
Authors: Liu Di , Geary Cody , Chen Gang , Shao Yaming , Li Mo , Mao Chengde , Andersen Ebbe S. , Piccirilli Joseph A. , Rothemund Paul W. K. , Weizmann Yossi
Published: March 2019

This study presents a robust homooligomeric self-assembly system based on RNA and DNA tiles that are folded from a single-strand of nucleic acid and assemble via a novel artificially designed branched kissing-loops (bKL) motif. By adjusting the geometry of individual tiles, we have constructed a total of 16 different structures that demonstrate our control over the curvature, torsion, and number of helices of assembled structures. Furthermore, bKL-based tiles can be assembled cotranscriptionally, and can be expressed in living bacterial cells.
ON THE SITUATED SOCIO-CULTURAL MEANING OF BENEFACTIVES IN BALINESE
Authors: Pratiwi Desak Putu Eka , Arka I Wayan , Shiohara Asako
Published: March 2019

This paper discusses a preliminary corpus-based study of benefactives in Balinese, from a socio-cognitive theory of situated socio-cultural meaning (cf. Langlotz 2015, Danielle and Evans 2017). It is part of larger corpus-based research on parallel texts in the international SCOPIC (Social Cognition Parallax Interview Corpus) project (http://hdl.handle.net/10125/24742). Benefactive constructions are defined as those expressing states of affairs (SoA) hold to someone’s advantage (Kittilä and Zúñiga 2010).  The notion of '(someone's) advantage' in Balinese benefactive meaning is tightly embedded in Balinese cultural worlds, having complex positive social meanings in which concepts such as 'self', 'reciprocity', 'in-.out-group', and spiritual rewards are central. The socio-cultural worlds are evidently reflected the speech level system in Balinese. There are different forms with fine-grained social meanings such as three words for 'give' in Balinese depending on the relative social relations of event and/or speech participants. An incorrect choice of linguistic device would lead to incorrect social indexing; hence socially unacceptable or inappropriate, not giving rise to the intended positive benefactive meaning. Our findings show that benefactive meaning is expressible through different means (lexical, morphological, and analytical/constructional). Surprisingly, the lexical benefactive 'give' is 100% expressed through the verb baang in our Balinese SCOPIC corpus, suggesting that the corpus is rather skewed towards the common (or low) register.
Dossiê Literatura e Memória. Ruptura e continuidade, dependência e autonomia
Authors: Leão Andréa Borges
Published: March 2019

Se olhamos com atenção os artigos que compõem o dossiê Literatura e Memória um fio condutor é evidenciado: a análise da dinâmica interna dos textos que vai dos aspectos narrativos às técnicas utilizadas − os temas, personagens e as tramas − articula-se às atuações de indivíduos em condições sociais específicas de produção e circulação das obras. Cada artigo e a seu modo trata das reivindicações de singularidade literária como movimentos alternados de ruptura e continuidade, dependência e autonomia. Um dos pontos que organiza o fio condutor a ser percorrido considera o campo literário como realidade simultaneamente espacial e temporal. Isto porque as disputas e os trunfos alcançados no jogo das consagrações e descartes de intelectuais, artistas e escritores de uma geração ficam gravados para sempre na memória coletiva.