bluuebunny/crossref_metadata_2025 huggingface dataset:
Understanding the Inhibition of Color Change in Problematic Red Parent Material Hydric Soils
Authors: Mack Sara C. , Rabenhorst Martin C. , Berkowitz Jacob F.
Published: May 2019

Core Ideas

Problematic red parent material (PRPM) soils lack typical hydromorphological characteristics.

Hematite mineralogy was suspected to limit redox‐induced color change in PRPM soils, but mechanisms were previously unknown.

Physical occlusion of Fe oxides in fine (silt and sand sized) lithic fragments did not induce color change resistance.

Significant Al for Fe substitution in hematite of PRPM soils was not observed, excluding that mechanism.

The large size of hematite crystals limits Fe reduction resulting in color change resistance in PRPM soils.

Problematic red parent material (PRPM) soils resist redox‐induced color changes and development of redoximorphic features, posing a challenge to hydric soil and wetland identification. Previous studies suggested that color change resistance was a function of the mineralogical properties of hematite inherited from soil parent materials, but the underlying cause of the phenomenon has remained uncertain. In this study, several hypotheses (i.e., physical occlusion, Al substitution, and crystal size) were investigated to explore the mechanism of PRPM soil color change resistance. The physical occlusion hypothesis was assessed by comparing Color Change Propensity Index (CCPI) values between size fractions for both PRPM and non‐PRPM soils. Persistence of color change resistance (low CCPI) in the finest (clay) fractions of all PRPM soils resulted in removing the physical occlusion hypothesis from consideration. Substitution of Al for Fe in hematite was compared between PRPM and non‐PRPM clay fractions by observing X‐ray diffraction (XRD) peak shifts. Substitution of Al in hematite remained low for the PRPM samples (mean 0.8 mol%), compared with the non‐PRPM (mean 6.8 mol%) suggesting that Al substitution is not the cause of observed color change resistance. Finally, mean hematite crystallite size was evaluated using Scherrer equation calculations. Mean hematite crystallite size in PRPM soils was significantly larger than non‐PRPM soils (P = 0.0039), suggesting that color change resistance and the PRPM soil phenomenon are derived from the large size of hematite crystals.
Effect of Macroporosity on Pedotransfer Function Estimates at the Field Scale
Authors: Zhang Xi , Zhu Junfeng , Wendroth Ole , Matocha Christopher , Edwards Dwayne
Published: May 2019

Core Ideas

Estimation ofKsusing established PTFs for one specific field was evaluated.

Selected PTFs exhibited unsatisfactory prediction ofKsat the field scale.

Taking macropore volume effect into account improved the prediction ofKswith PTFs.

Saturated hydraulic conductivity (Ks) is one of the crucial hydraulic properties for assessing water and solute transport in soils. However, direct measurement ofKsis time consuming and arduous. Alternatively, pedotransfer functions (PTFs) have been developed to estimateKsindirectly through more easily measurable soil properties that are part of regional, national, or international databases. These PTFs are usually based on datasets collected from large regions. However, their validity for a specific site remains unclear. The objectives of this study were to evaluate the performance of established PTFs in estimatingKsin a specific field and improve PTFs to arrive at a locally adapted estimation result forKs. Forty‐one soil samples were collected from 10 locations at five depths at a farmland in western Kentucky for hydraulic conductivity and physical property measurements. The performance of seven PTFs in estimatingKswas evaluated using the root mean square error (RMSE), Nash–Sutcliffe efficiency (NSE), and the coefficient of determination (R2). At this scale, all the selected PTFs exhibited unsatisfactory prediction ofKs(high RMSE, low NSE andR2). In the field studied, approximately 60% of variance inKscould be explained by soil texture and macropore components based on factor analysis. Clay content and macroporosity were identified as the most representative variables for each component. The performance of a PTF in estimatingKsfor the field site investigated was significantly improved by including macroporosity (pores with diameter >75 μm) as a predictor. The results confirmed that soil structure was crucial in characterizing soil hydraulic conductivity.
The role of mineral nanoparticles at a fluid-magnetite interface: Implications for trace-element uptake in hydrothermal systems
Authors: Yin Shuo , Wirth Richard , Ma Changqian , Xu Jiannan
Published: May 2019

The migrating fluid-mineral interface provides an opportunity for the uptake of trace elements as solid solutions in the newly formed crystal lattice during the non-equilibrium growth of the crystal. However, mineral nanoparticles could precipitate directly from the interfacial fluid when it evolves to a supersaturated situation. To better understand the role of mineral nanoparticles in this scenario, this study focuses on a well-documented magnetite with oscillatory zoning from a skarn deposit by using high-resolution transmission electron microscopy (TEM). Our results show that the Al concentration in magnetite measured on a micrometer-scale is caused by three different effects: Al solid solution, Al-rich nanometer-sized lamellae, and zinc spinel nanoparticles in the host magnetite. Here, we propose a genetic relationship among the three different phases mentioned above. At first, a continuous increase of the Al concentration in the interfacial fluid can be incorporated into the crystal lattice of magnetite forming a solid solution. During cooling in a later stage, aluminum in magnetite is oversaturated and exsolution of hercynite (Al-rich lamellae) occurs from the host magnetite. If the Al concentration at the fluid-magnetite interface still increases during further growth of magnetite, the substitution of Fe by Al has gradually reached saturation so that aluminum cannot be incorporated in the magnetite crystal structure any longer. Using the magnetite lattice as a template, nucleation of abundant zinc spinel nanoparticles occurs. This will, in turn, lead to a gradual depletion of Al concentration in the interfacial fluid until the available ions for zinc spinel nucleation and growth have been used up. As a result, the migrating fluid-magnetite interface will enrich the Al concentration in the interfacial fluid until the available ion concentration is sufficient for nucleation of zinc spinel phase again. The fluid-mineral interface in this mechanism has been repeatedly utilized during crystal growth, providing an efficient way for the uptake of trace element from a related undersaturated bulk fluid.
Gender in Afghanistan's Wheat and Agricultural Literature- How to Get to Empowerment?
Authors: Drucza Kristie , Peveri Valentina
Published: May 2019

This review of 45 documents demonstrates the massive evidence gap in gender relations in Afghanistan agriculture. Women face greater constraints than men in generating an income from agriculture, especially if single, but how this has changed over time and many other assumptions require empirical study. Furthermore, how to empower women economically in a patriarchal society is unclear, but the literature suggests that masculinity studies may present some answers. The review highlights the methodological challenges associated with conducting gender sensitive research in Afghanistan and the way misunderstood gender relations create further development challenges. Many questions remain about the role of agriculture in Afghanistan livelihoods and how this shapes, and is shaped by, gender relationships. Moreover, what an agenda for women’s empowerment should look like in Afghanistan’s rural farming communities remains unclear from the review. Empowering women in Afghan’s agriculture sector requires considerable experimentation, more data and contextually relevant, carefully designed programs. The review is relevant to development practitioners, researchers and agricultural scientists working in Afghanistan.
Water management systems of two towns in the Eastern Himalaya: case studies of Singtam in Sikkim and Kalimpong in West Bengal states of India
Authors: Sharma Ghanashyam , Namchu Chhayavani , Nyima Kalsang , Luitel Mahindra , Singh Sreoshi , Goodrich Chanda Gurung
Published: May 2019

This study examines the water supply systems, their sociopolitical dynamics, and the future of water management in two Indian towns in the Eastern Himalaya, Kalimpong in West Bengal and Singtam in Sikkim. The research was centred around issues of demand and supply, water scarcity and stress, equity, water governance, and the sustainable conservation and management of water resources in a climate change context. Methodologically based on surveys, focus group discussions, and key informants' interviews, this study finds that spring sources are drying alarmingly in Singtam, even as demand is increasing dramatically due to a floating population that is more than the number of local inhabitants. The town suffers from the lack of an adequate reservoir facility and the frequent damage of water supply pipes during the monsoon. Kalimpong faces acute water shortages all year round. The political tug of war between the state government agencies and the local government around the management and supply of water, declining water discharge in spring sources, the lack of water infrastructure for repair, maintenance, and supply, and the glaring inequity between the higher, middle, and lower income groups are the immediate issues around water in Kalimpong. The spring sources that supply drinking water to Kalimpong and Singtam need immediate conservation measures to arrest the declining state of discharge. Micro-planning at the local level, reviving drying springs, and the adoption of appropriate soil and water conservation practices on a watershed basis are all important ways forward. The development of water security plans and their strict enforcement through multi-institutional collaboration can contribute to improved water governance and socioecological restoration for sustainable water resources management.
Identification of Bioactive Coumarin(s) from Three Endophytic Fungal Species of Calophyllum tomentosum
Authors: Channabasava  , Melappa Govindappa
Published: May 2019

Background:

Many biologically important bioactive compounds have been identified in
Calophyllum tomentosum extract. Hence, we aimed to identify different endophytic fungal species
from different parts of the plants and their bioactive compounds.

Objective:

The study includes identification and characterization of bioactive compounds in the extracts
of endophytic fungal species of Calophyllum tomentosum.

Methods:

Different parts were used to assess the different endophytic fungi. Two different solvents
were used: extracts and qualitative solvents. TLC and GC-MS were employed to identify the bioactive
compounds. The bioactive compounds producing endophytes were identified by using18S
rRNA.

Results:

In total, 13 different fungal species were identified from different parts of the Calophyllum
tomentosum. The C. tomentosum leaf part showed seven different fungal endophytes from the barks
(four) and stems (two). The methanol extract of Fusarium species (stem), Cladosporium species
(bark) and hexane extract of Alternaria species (bark) showed a higher amount of coumarins in
qualitative methods and TLC. Based on the above results, for further GC-MS and molecular identification
studies, we selected three endophytes. In the GC-MS analysis, the methanol extract of
Fusarium species (stem) showed psoralen, and furocoumarin (imperatonin or ammidin); Cladosporium
species (bark) showed coumarin (2H-1-benzopyran-2-one), coumaric acid (3-benzofurancarboxylic
acid), hynecromone (coumarin 4), 4-hydroxy-9-(3-methyl-2-butyl)furo(3,2-g)chloronen-7-
one; and hexane extract of Alternaria species (bark) showed coumaric acid (3-benzofurancarboxylic
acid). The three fungal endophytes were identified as Fusarium equiseti, Cladosporium uredinicola
and Alternaria alternata from 18S rRNA analysis.

Conclusions:

Based on the above results, the three endophytic fungal species confirm the presence of
coumarins and therefore, can be used for the production of coumarins instead of the plant.
A Review on Heat Transfer Enhancement Using Magnetic Nanofluids
Authors: Hussain Taliv , Javed Mohammad Talha , Ansari Raquib Imam
Published: May 2019

Magnetic nanofluids are defined as fluids exhibiting magnetic properties. These fluids
are generated by suspending nanoparticles of magnetic nature in any base fluids. Magnetic
nanofluids have been a topic of interest for researchers because of their highly useful and manipulatable
properties. With the use of these fluids, heat transfer and flow characteristics can be controlled
by applying external magnetic fields. This paper reviews recent investigations in the field
of magnetic nanofluids with the purpose of assessing the effects of various parameters on their
heat transfer and flow characteristics. The objective of this review is to study the research done in
this field and understand the level at which this technology stands with all its opportunities and
challenges. The review has been classified into experimental and numerical simulation work. Investigations
in the presence and absence of magnetic field have been discussed under experimental
work. Investigations in the domain of numerical simulation of magnetic nanofluids have been
classified into single phase and multiphase analysis. Some novel applications of magnetic nanofluids
have also been discussed. It has been concluded that research in the field of magnetic nanofluids
is still in the preliminary stages and further experimental and simulation work needs to be
done. The physical process needs to be understood with a deeper perspective to create better models
for simulation. In spite of the challenges, research in this field of study has given exciting results
and it holds vast potential applications.
ORGANIZAÇÕES INTERNACIONAIS NÃO-ESTATAIS, DESENVOLVIMENTO ECONÔMICO E TRANSPLANTES JURÍDICOS: EM DEFESA DO DESCOLONIALISMO NA AMÉRICA LATINA
Authors: Leitão Roberto Guilherme
Published: May 2019

A compreensão dos problemas do desenvolvimento econômico na América Latina, sob uma matriz regional e uma lógica metrópole-colônia, suscita e perpassa algumas considerações relacionais que envolvem as ideias império, leis de império, Estado de Direito, Teoria dos Transplantes Legais (legal transplants) e a Escola direito e desenvolvimento (law and development). A questão que se coloca é: A questão que se coloca é: Como estabelecer e conceber um modelo de desenvolvimento econômico emancipatório (descolonial), a partir das necessidades e desigualdades próprios da região, frente a multiplicidade de institutos e instrumentos de ordenação-manipulação de poder econômico, notadamente frente as condicionalidades e condicionantes dos Organismos Internacionais Não-Estatais (Banco mundial)? Este é o objeto central do artigo. A pesquisa é eminentemente documental, tendo como referencial teórico o conceito de teoria dos transplantes legais, "law and development" e a matriz desenvolvimentista descolonial, desenvolvidos pelos Professores Watson, Mattei, Frankenberg, Lopez-Medina e Mignolo. O método de investigação científica, ou seja, analítico substancial. O artigo aborda as teorias de comparação constitucional, em uma perspectiva dinâmica dos "fluxos jurídicos", próprio do contexto normativo globalizante, utilizando-se fundamentos doutrinários da Teoria dos legal transplants contextualizados histórica e culturalmente com a realidade latino-americana, no propósito de consagrar identidade e fundamento legitimador do desenvolvimento econômico. Por fim, demonstra-se que a internacionalização de modelos de desenvolvimento econômico consagra reformas políticos-institucionais e jurídicos, engendradas por Organismos Internacionais Não-Estatais.
O QUE AS MOBILIZAÇÕES BRASILEIRAS OCORRIDAS EM 2013 TÊM A VER COM O CONSTITUCIONALISMO LATINO-AMERICANO?
Authors: Copelli Copatti Lívia
Published: May 2019

O estudo busca compreender o constitucionalismo democrático brasileiro e o novo constitucionalismo latino-americano, com a análise sobre as mobilizações sociais ocorridas no Brasil em 2013 e a possível relação que se pode estabelecer entre estas e o constitucionalismo latino-americano. Para isso desenvolve-se a análise do constitucionalismo democrático brasileiro, ressaltando a evolução do Estado e a concretização da democracia pela Constituição Federal de 1988, com destaque para a abertura à participação social. Também, extremamente importante para o objetivo é a análise do novo constitucionalismo latino – americano, com especial atenção para as características e aspectos mais marcantes da ruptura com o processo colonizador europeu, como o reconhecimento da diversidade, o estabelecimento de um Estado plurinacional e plural- participativo. Ao final, a análise centra-se nas manifestações sociais ocorridas no Brasil em 2013 e na relação com aspectos do novo constitucionalismo latino-americano, em especial o processo de democratização, a diversidade e a participação. Com isso, é possível compreender que as mobilizações sociais de 2013 estão relacionadas com o novo constitucionalismo latino-americano, especialmente pela luta pelos direitos fundamentais e o desejo de participar das decisões públicas.
EXPERIMENTALISMO E ANÁLISE INSTITUCIONAL NO CURSO FGV DIREITO RIO: UM PROJETO EM CONSTRUÇÃO
Authors: Falcão Joaquim , Delfino Pedro
Published: May 2019

Em meados de Maio de 2015, o Diretor da FGV DIREITO RIO marcou uma reunião com o coordenador da graduação e com um aluno do 5° período. A conversa começou com a seguinte frase: "Olha, no próximo semestre eu gostaria de dar uma disciplina". O tema seria educação jurídica. - disse o Diretor. “Bacana professor, vou me inscrever nessa matéria aí com certeza” - disse o garoto com uma perceptível empolgação. - Mas tem um detalhe. Eu gostaria que você fosse professor na disciplina junto comigo. Depois disso, algumas semanas se passaram e coube ao aluno preparar uma proposta de curso. Em uma nova reunião, o estudante apresentou sua ideia. - Isso é completamente diferente do que eu havia imaginado. Sejamos francos, essa ideia é psicodélica. Mas nós vamos fazer mesmo assim - disse o diretor rindo. A estrutura do DNA de uma instituição é definida pelo que as pessoas fazem e não por aquilo que elas dizem. Se for possível estruturar o experimentalismo institucional em uma fórmula, a equação necessariamente exigirá (i) tolerância ao risco e (ii) abertura em relação ao que é diferente. Apenas nesse contexto é possível construir um curso que adota a seguinte premissa: alunos também podem ensinar. O desenrolar desse experimento são cenas das próximas seções.
O PROJETO “HISTÓRIA ORAL DO SUPREMO” DA FGV DIREITO RIO
Authors: Cantisano Pedro
Published: May 2019

O projeto “História Oral do Supremo (1988-2013)” foi liderado pela Escola de Direito da Fundação Getulio Vargas do Rio de Janeiro (FGV Direito Rio), com participação do Centro de Pesquisa e Documentação de História Contemporânea – CPDOC e da FGV Direito SP. O objetivo do projeto foi criar um registro audiovisual e escrito da história do Supremo Tribunal Federal a partir de depoimentos de ministros aposentados e em atividade. Todas as entrevistas realizadas estão disponíveis online em formato open access no site historiaoraldosupremo.fgv.br. Neste artigo, apresento em linhas gerais as origens do projeto no contexto da recepção da História Oral no Brasil, as fases de realização do projeto, seus desafios metodológicos e seu impacto dentro e fora da academia. Para além de produzir conteúdo biográfico, o projeto fornece material rico para pesquisas sobre a história e o funcionamento do STF. Para além de fonte de pesquisa, o projeto é parte de um esforço de democratização do conhecimento sobre esta institutição.
Estimating the Size of Key Populations in Kampala, Uganda: 3-Source Capture-Recapture Study
Authors: Doshi Reena H , Apodaca Kevin , Ogwal Moses , Bain Rommel , Amene Ermias , Kiyingi Herbert , Aluzimbi George , Musinguzi Geofrey , Serwadda David , McIntyre Anne F , Hladik Wolfgang
Published: May 2019

Background

Key populations, including people who inject drugs (PWID), men who have sex with men (MSM), and female sex workers (FSW), are disproportionately affected by the HIV epidemic. Understanding the magnitude of, and informing the public health response to, the HIV epidemic among these populations requires accurate size estimates. However, low social visibility poses challenges to these efforts.

Objective

The objective of this study was to derive population size estimates of PWID, MSM, and FSW in Kampala using capture-recapture.

Methods

Between June and October 2017, unique objects were distributed to the PWID, MSM, and FSW populations in Kampala. PWID, MSM, and FSW were each sampled during 3 independent captures; unique objects were offered in captures 1 and 2. PWID, MSM, and FSW sampled during captures 2 and 3 were asked if they had received either or both of the distributed objects. All captures were completed 1 week apart. The numbers of PWID, MSM, and FSW receiving one or both objects were determined. Population size estimates were derived using the Lincoln-Petersen method for 2-source capture-recapture (PWID) and Bayesian nonparametric latent-class model for 3-source capture-recapture (MSM and FSW).

Results

We sampled 467 PWID in capture 1 and 450 in capture 2; a total of 54 PWID were captured in both. We sampled 542, 574, and 598 MSM in captures 1, 2, and 3, respectively. There were 70 recaptures between captures 1 and 2, 103 recaptures between captures 2 and 3, and 155 recaptures between captures 1 and 3. There were 57 MSM captured in all 3 captures. We sampled 962, 965, and 1417 FSW in captures 1, 2, and 3, respectively. There were 316 recaptures between captures 1 and 2, 214 recaptures between captures 2 and 3, and 235 recaptures between captures 1 and 3. There were 109 FSW captured in all 3 rounds. The estimated number of PWID was 3892 (3090-5126), the estimated number of MSM was 14,019 (95% credible interval (CI) 4995-40,949), and the estimated number of FSW was 8848 (95% CI 6337-17,470).

Conclusions

Our population size estimates for PWID, MSM, and FSW in Kampala provide critical population denominator data to inform HIV prevention and treatment programs. The 3-source capture-recapture is a feasible method to advance key population size estimation.
Hubungan antara Problematic Internet Use dengan Prokrastinasi Akademik
Authors: Anggunani Annisa Risqi , Purwanto Budi
Published: May 2019

This study aims to find out the relationship between problematic internet use (PIU) and academic procrastination in college students. This study took place in the Faculty of Psychology, Universitas Gadjah Mada with 190 students as the participants. The data were collected using Academic Procrastination Scale (APS) and Generalized Problematic Internet Use-2 (GPIUS2) that has been adapted in Bahasa. Hypothesis is analyzed using Pearson's product-moment correlation which shows that there is a positive relationship between problematic internet use and academic procrastination (r = 0,478; p = 0,000 (p<0,01). Furthermore, additional analysis shows that there is no different level in problematic internet use and academic procrastination based on gender. Other than that, there is also a no different level of academic procrastination based on the duration of internet usage in one day. Conversely, there is a different level of problematic internet use based on the duration of internet usage in one day.
Ketangguhan Pribadi Orang tua Tunggal : Studi Kasus pada Perempuan Pasca Kematian Suami
Authors: Nurfitri Dara , Waringah Siti
Published: May 2019

Losing a husband due to death causes feelings of griefs and raises some problems. It changes the status of women became a single parent. The aims of this study are to understand what causes single parents to own hardiness and how the hardiness is able to help them rise from the critical period after their husband died. This study uses a qualitative method with a case study research. Informants are three single parents and three significant others. This study uses an in-depth semi-structured interview for data collection. The results show that the three informants were able to rise above the critical period after their husband died and survived as a single parent until now. This happens because all the informants have hardiness. The effort and time required for the informants to rise are different. Three factors that gave contribution to increasing hardiness are mastery experiences, feelings of positivity, and parental explanatory styles. In the other hand, the researcher found another factor that categorized as internal and external factors.
Jaringan Nomologis Rasionalitas Epistemik dengan Inteligensi dan Perfeksionisme
Authors: Handani Seisar Winengku , Hidayat Rahmat
Published: May 2019

Rationality is a human’s ability to think clearly in order to achieve his goals. Rationality has two types, epistemic and instrumental. Epistemic rationality is related judgment and instrumental rationality is related to decision making. This research aims to validate the nomological network between epistemic rationality, intelligence, and perfectionism. It also aims to analyze the latent factor of three variables. The subject of this research is 67 college student from several universities in Yogyakarta. Data collection was held using CBT to measure epistemic rationality and perfectionism while paper and pencil were used to measure intelligence. The result shows that in measurement level, epistemic rationality does not shape the nomological network with intelligence and perfectionism. However, this research found that three variables have two latent factors based on convergence and divergence factor analysis.
Kohesivitas Tim dan Sikap terhadap Kepemimpinan Wasit sebagai Prediktor Kecenderungan Perilaku Agresif Pemain Sepakbola
Authors: Akbar Amin , Hastjarjo Thomas Dicky
Published: May 2019

This study aims to determine the role of team cohesiveness and attitude toward referee leadership to the aggressiveness tendency in Indonesian professional football player. Participants in this research were 90 Indonesian professional football players in "Liga Satu Gojek-Traveloka". The data were collected using three instruments: aggressiveness behavioral tendencies scale, team cohesiveness scale, and attitude toward referee leadership scale. Data were analyzed using linear regression analysis in SPSS 20. Findings from this research were the team cohesiveness and the attitude towards referee leadership have contributed in aggressive behavioral tendencies of Indonesian professional football player, shown by the value of R = 0.509 and R square = 0.259 p <0.01. Team cohesiveness and the attitude toward referee leadership effectively contribute as much as 25.9% on the aggressiveness tendency among Indonesia professional football players.
Perancangan Dinamometer Skala Kecil untuk Pengujian Karakteristik Gesek Bahan Blok Rem Kereta Api
Authors: Bukhori Rizal Akhmad , Surojo Eko , Muhayat Nurul
Published: May 2019

The brake blocks are components of the railway braking system that are useful for reducing speed or stopping the railway. In the development of railway brake block material needs a device that capable of testing the characteristics of the brake block material. One of the important characteristics of the brake block material is the frictional characteristic. The method of testing the frictional characteristics of existing brake blocks include using the pin on disc method, direct testing on the railway and using a full-scale dynamometer. The full-scale dynamometer has advantages than other methods because it can test specimens according to the actual railway braking conditions in a short time and less preparations. However, with the same specimen size as the original, the cost of making the specimen and the full-scale dynamometer become expensive. Therefore, to reduce the cost of making device and test specimens, this study will design the dynamometer small-scale brake block testing. This paper use Pahl and Beitz design method which divides the design into four stages: clarification of the task, conceptual design, embodiment design, and detail design. This dynamometer is designed by considering function designs, structures, and forces that are adapted to the brake block contact pressure according to the original conditions. This dynamometer is designed to vary material, wheel speed, and contact presssure with the output of measurement of friction coefficient of brake block material. Brake block test specimens have a reduced size with a 1: 4 scale from their original size. The results obtained from this research are engineering drawings and dynamometer test model of railway braking.
Pembuatan Prototipe Aplikasi Distribusi Pangan Berbasis Sistem Informasi Geografis (SIG)
Authors: Medyawati Henny , Setiawan Budi , Hegarini Ega , Trinugroho Imam Ahmad
Published: May 2019

Food distribution and supply chain are the main problems to achieve food security in Indonesia. Geographical gaps, poor transportation systems and social differences in Indonesia induce a high complexity challenges to implement a perfect distribution system that can suitable with Indonesia characteristic. The purpose of this research is building a prototype for food distribution application using geographical information system (GIS) that can be implemented in Indonesia. GIS can visualize the entire data layer into a map which is easier to analyze. Indonesia consists of 34 provinces that spread over many island, each has specific geographical profile and transportation problems. This can be used as data layers with other instruments which related with food distribution in Indonesia. Building a food distribution application prototype is part of developing food distribution system which produce prototype of the system. Prototyping approach is being used to evaluate the designing result of GIS with analyzing features for food distribution in Indonesia. Final result for this research is an application that can be implemented into food distribution system that can create a stable food security in Indonesia, for all of the provinces.
Konsep Desain Pengelolaan Dan Pemeliharaan Prasarana Ruang Jalan Umum Sesuai Standar Laik Fungsi Jalan Dan Standar Ruang Terbuka Hijau Kawasan Perkotaan
Authors: Suwardo Suwardo , Utomo Heru Budi
Published: May 2019

The objectives of the research are (1) to identify the infrastructure of green open space (RTH) concept on the road corridor, (2) to analyze the fulfillment of road space conditions against the requirements of road functional (SLFJ), (3) to analyze the completeness and condition of the road facilities to meet the green open space standard (SRTH), and (4) to set up development directives and design concepts for the management and maintenance of road space infrastructures that support green open space standards based on road functional requirements. Primary data for the analysis were obtained by direct observation/survey at the research site in Jalan Abu Bakar Ali, Malioboro, and Solo in Yogyakarta City and survey of respondents of road users with questionnaires. Secondary data used to support the analysis are (a) road map and condition of around study sites, (b) assumptions in design standards, (c) standards on markers, signs, lighting, drainage, and (d) related study reports. The method of quantitative and qualitative analysis according to SLFJ and SRTH was applied rationally. It can be concluded that the knowledge and perceptions of respondents about the use of road space and environmental conditions around the road in the three locations was obtained in Good category with scores of 3.4; 3.52; and 4.2, respectively. In Jalan Abu Bakar Ali respondents responded Agreed (score of 4.18), meaning that it required additional facilities and maintenance of the RTH’s facilities and landscape. The management and maintenance of RTH's infrastructure and facilities of Jalan Abu Bakar Ali, Jalan Malioboro and Jalan Solo has been done by Yogyakarta City Planning Agency, organized and well-scheduled. Based on the evaluation of road functional requirement in Jalan Abu Bakar Ali (secondary collector), Jalan Malioboro (secondary artery), and Jalan Solo (secondary artery), all that are categorized as Conditional Function (LS). It means that the road has not fulfilled some road functional requirements in terms of utilization of road space, or there are still technical recommendations that must be met so that roads can be categorized as Function (LF). It obtained that Road Use Space (RUMAJA) is not effectively used, which characterized by still many permanent and non permanent buildings in the RUMAJA area. The design concept of the management and maintenance of road infrastructure should be based on the principle of maximizing road function (according to SLFJ) and the fulfillment of green open spaces on sidewalks and around (according to SRTH).
Pengujian Distribusi Beban Kerja Web Secara Statis pada Sistem Server Web Berbasis Cluster dengan Algoritma Never Queue
Authors: Angsar Nongki
Published: May 2019

The increase in web traffic and the development of network bandwidth that is relatively faster than the development of microprocessor technology today causes the one point server platform to be no longer sufficient to meet the scalability requirements of web server systems. Multiple server platforms are the answer. One known solution is cluster-based web server systems. In this study, a cluster-based web server system would be designed with the Never Queue algorithm and continued with testing the distribution of web workload on this system. The tests were carried out by generating HTTP workloads statically (with fast HTTP requests per fixed second) and dynamically (rapid HTTP requests per second that change or rise regularly) from the client to the web server system pool. Followed by analyzing data package traffic. In this study, the results of static testing with rapid HTTP requests per second which still showed that the Never Queue algorithm distributed HTTP requests to the web server system pool properly and got HTTP replies that tend to be stable at the HTTP average of 1031.8 replies/s. As for the rapid parameters of TCP connections, response times and errors increased with the rapid increasing HTTP requests generated. The average output was at 2,983 Mbps.
The Profitability of Dutch Business in Late Colonial Indonesia
Authors: Lindblad Jan Thomas
Published: May 2019

The issue of profitability of colonial business lies at the core of the argument about a possible colonial drain depriving the overseas territory of opportunities to selfsustained economic growth. This contribution seeks to assess whether profit rates of private foreign firms in the colonial economy can be considered excessive or a reasonable compensation for capital and know-how made available to the colony. The article contains brief sections on historiography and methodology as well as new estimates, including a preliminary discussion of results. The article argues that profit rates in colonial business were generally higher than elsewhere, but also that the difference was smaller than has often been imagined.
Management of Market Development of South East Europe Countries
Authors: Vidovic Aleksandra
Published: May 2019

Development management in most cases starts closer economic cooperation in order to increase GDP and welfare, which is primarily economic. Market liberalization has in fact started the integration of European states. The countries of South East Europe need to aim at for development paying particular attention to the maintenance of macroeconomic stability South East Europe need to aim at management changes paying particular attention to the maintenance of macroeconomic stability, competitiveness and cooperation with the European Union.In this work, the author wishes to emphasize the importance of development management, long-term sustainable and stable growth is the priority of every society that passes through the transition period. The focus of the paper is the management of market development, where a comparison of the situation of the three countries within the European Union is given: Croatia, Romania and Bulgaria and three candidate countries for membership of the European Union: Bosnia and Herzegovina, Serbia and Montenegro.
Pérdida de visión por diabetes: detección y tratamiento
Authors: Thébault Stéphanie
Published: May 2019

La retinopatía diabética (rd), enfermedad de la retina comúnmente clasificada como una complicación vascular de la diabetes, es ahora reconocida como una afección que implica tanto a los vasos como a las neuronas (neurovascular). Muchas evidencias apuntan a que esta neuropatía sensorial resulta de la ruptura de la unidad neurovascular. A pesar de ello, las terapias actuales se centran en limitar las anomalías vasculares, incluyendo la formación de vasos sanguíneos irregulares y la hinchazón en la parte central de la retina (conocida como edema macular). Con base en que la ruptura de la unidad neurovascular es un evento temprano en la rd, muchos esfuerzos científicos se centran en encontrar los mecanismos que se vinculan con su ruptura, para lograr el desarrollo de nuevos tratamientos en etapas tempranas. Sin embargo, también hace falta desarrollar y validar nuevos marcadores tempranos de la función visual para reducir la duración de los ensayos clínicos y acelerar la entrega de nuevos tratamientos contra la rd para la población en general. En este trabajo, revisamos qué es la unidad neurovascular retiniana y las alteraciones tempranas que la misma sufre en condiciones de diabetes, y examinamos a detalle la necesidad de generar criterios de valoración temprana de la función visual para los futuros ensayos clínicos que evalúan los nuevos tratamientos para la rd.
PENGARUH PENGUMUMAN PEMBAYARAN DIVIDEN TUNAI TERHADAP PERUBAHAN RETURN SAHAM
Authors: Chadilla Ainul
Published: May 2019

This research aims to analyze the effect of cash devidend payment announcement on stock return. Compass 100 Index is a collection of 100 companies that have good financial performance as well as changes in the level and frequency of transactions is high prices. The result showed that there was a significant effect between cash devidend payment announcement and stock return changes. Some conditions showed an abnormal return, where in period t-2, t0, t1 and t3 were greater than t tables. It indicates that the payment announcement of cash devidend information increasing market trust and investor attractive.Keywords: Cash Dividend Payment Announcement, Stock Return changes, Compass 100 Index
PENGARUH KEBIJAKAN DIVIDEN TERHADAP HARGA SAHAM
Authors: Hakami Muhammad Ali Fikri
Published: May 2019

The research aim is to analyze the effect of dividend policy on company’s stock price. The analysis used Distributed-Lag Regression with Alt and Timbergen Method. The result shows that devident policy has lower contribution on stock price. Dividend on the t-2 period has a significant influence on the stock’s price, but on the t-1 period, and t-3 there were no significant effect. The finding indicates that dividend policy has a significant effet on stock price. it means the more dividend increase, stock’s price will increase high. Keyword: Dividend Policy, Stock Price, Timbergen Method.
PENGARUH KEPERCAYAAN, KEMUDAHAN MENGOPERASIKAN LAYANAN DAN RESIKO BELANJA ONLINE TERHADAP NIAT BELI MELALUI JEJARING SOSIAL
Authors: Haris Abdul
Published: May 2019

The research aims to analyze the effect of the rust, website usability, and the risk of online shopping on intentions to buy in social media. The analytical tool used in this research was a multiple linear regression with SPSS. The result shows that trust, website usability, and the risk of online shopping have a simoultaneously and partially influence on intention to buy. The practical implication is the F irm should provide more attention to trust, website usability, and the risk of online shopping. Its could be increasing sales and the consumer F eels safe and comfortable in the process of online shopping transactions.Keywords: trust, the easy of service operating, the risk of online shopping, purchase intention.
MEMPREDIKSI KEBANGKRUTAN PERUSAHAAN PERBANKAN (STUDI PADA PERUSAHAAN PERBANKAN YANG TERCATAT DI BEI)
Authors: Iswanto Iswanto
Published: May 2019

The purpose of this study is to determine the most influential ratio of CAMEL on bankruptcy of banking companies listed on the Stock Exchange. The other purpose is to predict bank bankruptcy. The result resesarch found that the ratios of CAMEL have a positive and significant effect in predicting bankruptcy of the banking company. The ratio of capital adequacy ratio (CAR) is accurate for predicting bank bankruptcy with a significance level of 0.014. It could be suggested that banks management should be pay more attention to the ratio of capital adequacy ratio (CAR) because it can provide a positive influence on the prediction of bank bankruptcy. Investors should be also pay more attention to the CAR when making a decision to minimize the risk. Further research should be consider other than CAMEL ratios, for example, aspects of compliance including Maximum Lending limit (LLL), reserve requirement (GWM), and Net Open Position (NOP). Keywords: Predicting Bankruptcy, CAMEL and CAR.
RESPON INVESTOR TERHADAP PERGANTIAN MENTERI KEUANGAN REPUBLIK INDONESIA PERIODE 20 MEI 2013
Authors: Ridwan Izaat Zakia
Published: May 2019

The research aims to determine the response of stock investors to the changing of Republic Indonesia’s Finance Minister on 20th May 2013. Data used the company’s stock index in LQ45 2013. Technique of collecting data is using documentary methods. Data analysis is using event study, and statistics. The result shows that changing of Finance Minister Period 20th May 2013 does not have a significant impact on return and abnormal return to be earned by investors before, during, and after changing.
KARAKTERISTIK INDIVIDU DAN PERILAKUKEWIRAUSAHAAN PENGUSAHA PRODUK UNGGULAN USAHA KECIL DAN MENENGAH KABUPATEN LUMAJANG
Authors: Bachtiar Andri
Published: May 2019

The research aims to determine the characteristics of the individual entrepreneur's flagship product in small and medium enterprises Lumajang. Analysis tools used is the range of scale and cross tabulation. The result indicated that entrepreneur’s characteristic were high responsible, seeking an opportunities, resistant to risks and uncertainties, confidence, creative and flexible, require quick feedback, high energy level, motivation to excel, future-oriented, always learn from failure, and the ability to lead. The characteristics of entrepreneurial attitudes and behaviors are still need to increase in order to compete with others.
PEMBENTUKAN PORTOFOLIO OPTIMAL PADA BEBERAPA SAHAM YANG MASUK PADA INDEKS PEFINDO25 YANG TERCATAT DI BURSA EFEK INDONESIA
Authors: Sa’diyah Chalimatuz
Published: May 2019

This study aims to determine the stock that form the optimal portofolio and the proportion of funds invested and determine the rate of return and level of risk of the optimal portofolio of stocks that, is formed in the PEFINDO25 index listed on Indonesian Stock Exchange, in the study period at August 2011 to July 2013. The method of analysis used in this study is a single index model method and sampling techniques using purposive sampling. Based on the results of data analysis stocks that form the optimal portofolio in PEFINDO25 index in the period at August 2011 – July 2013, obtained three stocks included in the optimal portofolio members. The share are accompanied by the proportion of investment funds is BISI (BISI International Tbk) 48,4379%, GZCO (Gozco Plantations Tbk) 31,3017%, HRUM (Harum Energy Tbk) 20,2604%,. The stocks are result yield rate of return on a portofolio that will get investors at 0,151% and the portofolio risk level of  0,003%.
PENGARUH PERSONAL SELLING, DISPLAY PRODUCT DAN STORE ATMOSPHERE TERHADAP IMPULSE BUYING
Authors: Rizal Didid Haris Bahtiyar
Published: May 2019

This research aims to examine and analyze the effects of personal selling, product display, and store atmosphere simultaneously and partially towards consumer impulse buying consumer hypermart departemen store Malang Town Square. The sample size consisted of 100 respondents taken by accidental sampling. The data was analyzed by using the multiple linear regressions. The results showed personal selling, product display, and store atmosphere has the effect of simultaneously and partially towards impulse buying department store consumer matahari departemen store Malang Town Square. Variables store atmosphere dominant influence impulse buying in the consumer hypermart departemen store Malang Town Square.
PENGARUH DIMENSI EKUITAS MEREK TERHADAP MINAT BELI PADA KERTANEGARA GUEST HOUSE MALANG
Authors: Wardani Ervan Ade
Published: May 2019

Intention this research is to test dimension of equity brand have an effect to enthusiasm buy at Guest House Kertanegara Malang and to test brand equity influence to enthusiasm buy at Guest House. Population in this research are guest using service of Guest House Kertanegara, by using technique of convenience purposive sampling. Sample size 100 respondents. Technique analysis is linear regression analysis  by using test of regression doubled linear. The result of research show that linear regression analysis is positive relationshio between the brand equity and enthusiasm., test t test and f test, indicating that brand equity have influence of significant to enthusiasm buy. Between awareness brand, brand association, perception of quality, dimension brand and loyality owning most influence significan is awareness of brand, brand association, perception of quality of, and brand loyality.
STUDI KELAYAKAN PEMANFAATAN LIMBAH SUMPIT UNTUK PEMBUATAN PRODUK PENGISI RONGGA - RONGGA KERTAS PADA UD MUTIARA 9 SERANG BANTEN
Authors: Hermawan Eka Angkasa Putra Agni
Published: May 2019

This study aims to analyse levels of the feasiblity of the utilization of chopstick waste of the manufacture of filler products cavities. To measure the feasibility some aspects should be considered such as market, marketing, operational, human resources, and financial aspect. The result indicated that all acpect was feasible. The market aspect is feasible because it has high demand. Operation aspect is feasible because of modern technology used. Human resource aspects is feasible because of the there were skills labor own by the company, and financial aspect is also feasible because NPV more than zero and payback period less than estimated period.
PENINGKATAN KUALITAS LAYANAN KONSUMEN PADA RADIO RADIO DAKWAH ISLAMIAH 100,5 Fm
Authors: Setiawan Arif Agung
Published: May 2019

The purpose of this study was to determine the quality of service on 100.5 FM Radio Dakwah Islamiah, to know what service attributes less value performance and find out what attributes can be developed as a new added value, and to identify targets and priority repairs to be carried out by RDI 100.5 FM. The analysis tool used is Quality Function Deployment (QFD) by means House of Quality (HOQ) to convert the customer's voice directly to the technical requirements of the services produced. This study uses six operational variables, namely quality management, design of products and services, layout, location, process design and capacity, human resources in the job design attributes translate what the customer needs. The results of analysis shown that the quality of existing services in RDI 100.5 FM that is pretty good, but need repair and upgrading to meet the expectations of listeners is on the attributes of the hospitality crew, modulation radio announcer voice clarity. It is also shown to attribute that has a value that is less performance such as signal coverage, the number of pauses, specialization of employees, and knowable steps can companies do to improve the quality of service that has been sorted based on targets and priorities.