bluuebunny/crossref_metadata_2025 huggingface dataset:
Forecasting US Tourists’ inflow to Slovenia by modified Holt-Winters Damped model: A case in the Tourism industry logistics and supply chains
Authors: Dragan Dejan , Keshavarzsaleh Abolfazl , Kramberger Tomaž , Jereb Borut , Rosi Maja
Published: July 2019

Forecasting is important in many branches of logistics, including the logistics related to Tourism supply chains. With an increasing inflow of American tourists, planning and forecasting the US tourists’ inflow to Slovenia have gained far more importance attention amongst scholars and practitioners. This study, therefore, was conducted to forecast the American tourists’ inflow to Slovenia using one of the predictive models based on the exponential smoothing approach, namely Holt-Winters damped additive (HWDA) exponential smoothing method. The model was modified by several improvements, while the obtained results were generalized to other supply chain components. The results show that the forecasting system can predict well the observed inflow, while the methodology used to derive the model might have enriched the plethora of existing practical forecasting approaches in the tourism domain. Benchmarking demonstrates that the proposed model outperforms a competitive ARIMA model and official forecasts. The practical implications are also discussed in this paper.
A Multi-Objective Solution of Green Vehicle Routing Problem
Authors: Kabadurmuş Özgür , Erdoğan Mehmet Serdar , Özkan Yiğitcan , Köseoğlu Mertcan
Published: July 2019

Distribution is one of the major sources of carbon emissions and this issue has been addressed by Green Vehicle Routing Problem (GVRP). This problem aims to fulfill the demand of a set of customers using a homogeneous fleet of Alternative Fuel Vehicles (AFV) originating from a single depot. The problem also includes a set of Alternative Fuel Stations (AFS) that can serve the AFVs. Since AFVs started to operate very recently, Alternative Fuel Stations servicing them are very few. Therefore, the driving span of the AFVs is very limited. This makes the routing decisions of AFVs more difficult. In this study, we formulated a multi-objective optimization model of Green Vehicle Routing Problem with two conflicting objective functions. While the first objective of our GVRP formulation aims to minimize total CO
2 emission, which is proportional to the distance, the second aims to minimize the maximum traveling time of all routes. To solve this multi-objective problem, we used ɛ-constraint method, a multi-objective optimization technique, and found the Pareto optimal solutions. The problem is formulated as a Mixed-Integer Linear Programming (MILP) model in IBM OPL CPLEX. To test our proposed method, we generated two hypothetical but realistic distribution cases in Izmir, Turkey. The first case study focuses on an inner-city distribution in Izmir, and the second case study involves a regional distribution in the Aegean Region of Turkey. We presented the Pareto optimal solutions and showed that there is a tradeoff between the maximum distribution time and carbon emissions. The results showed that routes become shorter, the number of generated routes (and therefore, vehicles) increases and vehicles visit a lower number of fuel stations as the maximum traveling time decreases. We also showed that as maximum traveling time decreases, the solution time significantly decreases.
The application of AHP in the development of a taxonomy of merchant marine deck officers’ non-technical skills (NTS)
Authors: Saeed Farhan , Bury Alan , Bonsall Stephen , Riahi Ramin
Published: July 2019

The importance of NTS has been realised in many safety critical industries. Recently the maritime domain has also embraced the idea and implemented an NTS training course for both merchant marine deck and engineering officers. NTS encompass both interpersonal and cognitive skills such as situational awareness, teamwork, decision making, leadership, managerial skills, communication and language skills. Well-developed NTS training allow ship’s officers to recognise quickly when a problem is developing and manage the situation safely and efficiently with the available team members. As a result, the evaluation and grading of deck officers’ NTS is necessary to assure safety at sea, reduce the effects of human error on-board ships, and allow ship board operations to be performed safely. This paper identifies the skills necessary for deck officers to effectively perform their duties on the bridge of a ship. To achieve this, initially, a taxonomy of deck officers’ NTS is developed through a review of relevant literature and the conducting of semi-structured interviews with experienced seafarers. Subsequently, NTS weighting data is collected from experienced seafarers to allow the weight of each element of the taxonomy to be established by the use of the Analytical Hierarchy Process (AHP).
Effects of the type of biomass and ashing temperature on the properties of solid fuel ashes
Authors: Horák Jiří , Kuboňová Lenka , Dej Milan , Laciok Vendula , Tomšejová Šárka , Hopan František , Krpec Kamil , Koloničný Jan
Published: July 2019

Ashes were prepared by annealing selected types of solid fuels (biomass: corn cobs, sunflower husks, olive pomace, hay pellets and rice husks; coal: lignite and bituminous; and alternative fuel: paper sludge) at different temperatures (550°C, 815°C and 975°C). Based on X-ray fluorescence spectra, the slagging/fouling indexes were used to study the effects of the type of ash and the ashing temperature on the ash fouling and slagging properties. Slagging indexes were compared with the ash fusion temperatures. Ash fusion temperatures were measured by a LECO AF-700. The lowest deformation temperature (below 1000°C) was seen for the ashes prepared from hay pellets and corn cobs. On the other hand, the deformation temperature exceeded 1500°C for ashes prepared from paper sludge, sunflower husks and rice husks. By calculating the different slagging/fouling indexes, all the ashes exhibited slagging/fouling problems of varying degrees.
Strontium-based nanosized phosphates as anticorrosive fillers of epoxy and polyurethane coating compositions
Authors: Kowalczyk Krzysztof , Gołąbek Justyna , Przywecka Katarzyna , Grzmil Barbara
Published: July 2019

Anticorrosive epoxy and polyurethane coatings were compounded using zinc-free nanosized phosphates of strontium (SP) or strontium and aluminum (SAP). For comparison, a nanosized calcium aluminum ammonium phosphate (CAP) and a microsized zinc phosphate (ZP) were tested. Results of salts spray and cyclic corrosion tests revealed better anticorrosive properties of the SAP-based coatings in relation to the samples with the other Zn-free fillers or ZP. Electrochemical noise tests of uncoated steel in aqueous suspensions of the phosphates exhibited similar corrosion inhibition efficiency of the Sr-based phosphates and ZP, and worse anticorrosive features of CAP. Electrochemical impedance spectroscopy did not show better protective properties of ZP-based coatings than the samples with the Zn-free fillers.
Conversationally and Monologically-Produced Narratives: A Complex Story of Horizontal Décalages
Authors: Veneziano Edy
Published: July 2019

Theory-of- mind-related abilities present a long development characterized by both vertical and horizontal décalages. A vertical type of décalage can be seen in children’s abilities to take into account, on a practical level, others’ intentional and mental states and use internal state terms to talk about them before they are able to succeed, at the dominant representational level of functioning, in false belief tasks. Several horizontal décalages can also be observed. It is only after success in FB tasks that children can talk about the mental states of characters in fictional stories. Moreover, ToM-related and other inferential elements are expressed earlier and more frequently in conversationally-constructed than in monologically-produced narratives. This paper examines in particular this type of horizontal décalage by comparing the types of explanations produced by eighty 6- and 7-year-old French-speaking children during a short conversational intervention (SCI) focused on the causes of the story events to those expressed in monological narratives, about the same wordless picture story, produced immediately after or before the SCI. The results confirm that children expressed more ToM-related and other inferential elements during the SCI than in the two monologically-produced narratives. However, the comparison between explanations produced during the SCI and in the immediately following monological narrative also reveals complex relations among understanding, knowing and expressing this knowledge. The reasons and the significance of the horizontal décalages found in the study are discussed.
GPR surveying method as a tool for geodetic verification of GESUT database of utilities in the light of BSI PAS128
Authors: Gabryś Marta , Kryszyn Katarzyna , Ortyl Łukasz
Published: July 2019

Intensified investment processes in construction have resulted in increased interest in the methods of efficient detection, verification and location of underground utility networks. In addition to the well-known pipe and cable locating equipment, which has increased its efficiency and reliability through the development of technologies, GPRs are becoming more and more popular.

This publication presents the results of the experimental research carried out with the use of GPRs manufactured by two different companies as well as the results of the verification of underground utilities in real conditions. The GPRs have worked in the mode of the real-time location of their own position using the GNSS system or robotic total stations.

The GPR (Ground Penetrating Radar) surveys performed on a test field, consisting of 9 pipes with a known position, were aimed at assessing the accuracy of their identification on echograms. The utility line location errors were determined using three different combinations between the GPR and the locating instrument. It allowed the evaluation of the possibility of using these solutions for detection, verification and location of underground utility networks in the light of the Polish legal regulations and the British specification PAS 128.

The verification in real conditions was carried out in a typical urban space, characterised by an intense occurrence of underground utilities, that is, sewage systems, gas pipelines and power cables. It was based on the GESUT database captured from the county geodetic and cartographic documentation centre. The results of the visual analysis of the materials captured with the help of two measurement systems were described in detail, however, the verification was carried out only for one set of data. The authors have presented the procedure of processing echograms and detecting the location of pipeline axes based on their vectorisation. The authors of this research paper have performed a numerical analysis of the compliance of the profiles of utility lines with the information from the base map for two variants of the GPR data integration with the coordinates. The authors of this research paper have also presented an alternative concept of capturing the profile of a utility line in the field based on the processing of GPR data in 3D – the so-called C-scan. The conclusions summarise the possible factors affecting the surveying results and the methods of eliminating sources of errors, both for the GPR and geodetic data.
The Interpretation of Null Subjects in a Radical Pro-drop Language: Topic Chains and Discourse-semantic Requirements in Chinese
Authors: Frascarelli Mara , Casentini Marco
Published: July 2019

Based on original data collected through an online experiment, evidence is provided in this paper that the interpretation of null subjects in a radical pro-drop language like Chinese relies on the topic criterion proposed for consistent and partial pro-drop languages (Frascarelli 2007 and Frascarelli 2018), thereby supporting the theory that the null subject parameter implies an information-structural strategy for interpretation. Nevertheless, radical Chinese shows specificities that must be integrated in this theory for a comprehensive account. In particular, even though silent topic can start chains (consistent with the topic criterion), data show a significant preference for overt and local topics as antecedents. This locality requirement thus integrates phonological visibility in a general syntactic condition (minimal overt link condition), proposing an interesting parallel with the properties shown by partial pro-drop languages (Frascarelli and Jimenez-Fernandez in press). The present investigation also contributes to outline the structural differences existing between adverbial clauses in Chinese, supporting a distinction between central and peripheral adverbial clauses (Haegeman 2012). Specifically, while temporal and conditional clauses show the properties of nonrestrictive relative clauses, this is not the case for concessive clauses, which merged as subordinate clauses in either the C-domain or the high split-TP area. Differences between temporal and conditional clauses are attributed to the presence of an overt operator in the latter, and the pre-matrix position of adverbial clauses is explained in the light of their discourse role as frame-setters (Krifka 2007).
A cross-linguistic database of phonetic transcription systems
Authors: Anderson Cormac , Tresoldi Tiago , Chacon Thiago , Fehn Anne-Maria , Walworth Mary , Forkel Robert , List Johann-Mattis
Published: July 2019

Contrary to what non-practitioners might expect, the systems of phonetic notation used by linguists are highly idiosyncratic. Not only do various linguistic subfields disagree on the specific symbols they use to denote the speech sounds of languages, but also in large databases of sound inventories considerable variation can be found. Inspired by recent efforts to link cross-linguistic data with help of reference catalogues (Glottolog, Concepticon) across different resources, we present initial efforts to link different phonetic notation systems to a catalogue of speech sounds. This is achieved with the help of a database accompanied by a software framework that uses a limited but easily extendable set of non-binary feature values to allow for quick and convenient registration of different transcription systems, while at the same time linking to additional datasets with restricted inventories. Linking different transcription systems enables us to conveniently translate between different phonetic transcription systems, while linking sounds to databases allows users quick access to various kinds of metadata, including feature values, statistics on phoneme inventories, and information on prosody and sound classes. In order to prove the feasibility of this enterprise, we supplement an initial version of our cross-linguistic database of phonetic transcription systems (CLTS), which currently registers five transcription systems and links to fifteen datasets, as well as a web application, which permits users to conveniently test the power of the automatic translation across transcription systems.
Prevalência das hepatites B e C em moradores de rua em São Luís-MA
Authors: Silva Thiago Henrique dos Santos , Calisto Mariana Martins , Carvalho Ana Carolina Macedo de , Magalhães Hilário José Cardoso , Monteiro Neto Valério , Ribeiro Enzo Eldes Costa , Sousa Mariana Maryelle Ferreira de , Pereira Domingos Magno Santos , Monteiro Silvio Gomes
Published: July 2019

Prevalência de hepatite B e C e identificação do perfil epidemiológico de cem moradores de rua de São Luís-Maranhão. Objetivos: Caracterizar o perfil epidemiológico dos indivíduos portadores dos vírus das hepatites B e C; Analisar a prevalência e vulnerabilidade a ISTs em moradores de rua em São Luís- MA;. Métodos: Trata-se de um estudo epidemiológico do tipo transversal, descritivo-analítico de população de risco, ou seja, de moradores das ruas. O projeto foi aprovado pelo Comitê de Ética em Pesquisa da Universidade Ceuma com seguinte n° de parecer: 769.163. Resultados:. Na amostra com 105  moradores de rua de São Luis encontrou-se as seguintes prevalências: Hepatite C (3,8%) e não foi encontrado dentro do espaço amostral nenhum caso de hepatite B. Consumo de drogas: Crack(21,9%), Crack e Cocaína(40,0%), Cocaína(19,0%), Maconha(12,4%), Ignorado(6,7%). População composta em sua maioria (53,3%) por homens, (100%) heterossexuais, (59,5 %) não brancos. Conclusão: os dados obtidos demonstraram uma grande vulnerabilidade desse grupo populacional quanto as ISTs o que torna preocupante e de extrema importância a assistência a essa parcela da população de São Luis tanto no esclarecimento das medidas preventivas das ISTs quanto  na detecção precoce dessas doenças que podem se manifestar de forma silenciosa tais como a Hepatite B e C impactando assim na qualidade de vida desse grupo negligenciado pelas políticas públicas.Palavras-Chave: Hepatite B; Hepatite C; Moradores de Rua; IST; Prevalência;
PERANCANGAN KEY PERFORMANCE INDICATORS KINERJA SUPPLY CHAIN PT. XYZ DENGAN PENDEKATAN BALANCED SCORECARD
Authors: Hardono Joko
Published: July 2019

Pengukuran kinerja Supply Chain PT. XYZ hanya melihat dari produktivitas perusahaan. Produktivitas hanya mampu mengukur kinerja proses internal, pada proses internal dalam satu hubungan rantai pasok. Perusahaan perlu merancang model pengukuran kinerja supply chain secara keseluruhan dan terintegrasi dalam suatu hubungan kausal, mulai dari pemasok, proses internal kepada pelanggan, untuk mengetahui efektivitas perusahaan rantai pasokan. balanced scorecard memenuhi perspektif yang diperlukan. Model balanced scorecard digunakan sebagai kerangka kerja untuk merancang Key Performance Indicator (KPI) dari kinerja supply chain PT. XYZ. KPI adalah desain berdasarkan 4 perspektif, yaitu: proses internal, pelanggan, pembelajaran dan pertumbuhan dan perspektif keuangan. Pembobotan untuk menentukan prioritas antara perspektif dan KPI dilakukan dengan menggunakan Analytical Hierarchy Process (AHP). Hasil dari analisis dihasilkan 20 KPI. perspektif proses internal yang berisi 9 KPI dengan berat total 21,0%, perspektif pelanggan berisi 6 KPI dengan berat total 42,6%, Belajar dan perspektif pertumbuhan berisi 4 KPI dengan berat total 17,5%, perspektif Pemegang Saham mengandung 1 KPI dengan total berat 19,0. Kata kunci: Key Performance Indicator, Supply Chain, Balanced Scorecard, Analytical Hierarchy proceses
INOVASI RANCANGAN PRODUK DAN BISNIS MODEL TERMOPLASTIK DARI TEPUNG SINGKONG
Authors: Febriani Elfira
Published: July 2019

Pengembangan plastik biodegradable dari tepung singkong sangat potensial untuk dikembangkan karena bahan baku yang mudah didapatkan terutama di Indonesia. Plastik yang menggunakan bahan baku tepung singkong merupakan sebuah invensi yang harus dikembangkan untuk mengurangi masalah pencemaran lingkungan sehingga dapat menjadi sebuah bisnis yang dapat berkembang. Oleh sebab itu tujuan dari makalah ini adalah mengusulkan rancangan produk dan bisnis model termoplastik dari tepung singkong. Dalam perancangan produk untuk menghasilkan termoplastik menggunakan beberapa jenis bahan utama yaitu tepung tapioka, magnesium stearat, serta bahan pemlastis berupa gliserol 99% (b/b) serta akuades maka jika dihubungkan dengan teori tepung singkong berpotensi untuk dijadikan termoplastik dikarenakan memiliki kandungan pati (80-90%) dan serat (1.5-3%) yang tergolong cukup tinggi. Pada awalnya target pasar mungkin lebih ditujukan kepada masyarakat yang memiliki konsep back to nature. Rancangan termoplastik tersebut jika dirancang dalam sebuah model bisnis dengan konsep Business Model Canvass (BMC) yang terdiri dari sembilan elemen. Sembilan elemen BMC terdiri atas customer segments, value prepositions, channels, customer relationship, revenue streams, key resources, key activities, key partnership dan cost structure. Kata kunci: Rancangan Produk, Termoplastik, Business Model Canvass
PERANCANGAN STASIUN KERJA BAGIAN PACKING PADA PT. X
Authors: Adianto Adianto , Wijaya Indra
Published: July 2019

Kondisi kerja yang kurang nyaman dapat menyebabkan kerugian, salah satunya adalah keluhan bagian tubuh yang sakit pada pekerja. PT. X adalah salah satu perusahaan plastik yang memproduksi plastik dengan skala produksi 80 ton per hari, dimana terdapat pekerja-pekerja yang bekerja dalam posisi yang tidak ergonomis, salah satunya di bagian packing plastik High Density Poly Ethelene (HDPE). Penelitian ini bertujuan untuk mengetahui nilai resiko postur kerja pekerja bagian packing HDPE di PT. X berdasarkan nilai RULA dan memperoleh rancangan stasiun kerja yang diusulkan dari hasil AHP untuk mengurangi rasa sakit pada saat bekerja. Dalam penelitian ini digunakan metode Nordic Body Map Questionare, Rapid Upper Limb Assesment (RULA), dan Analytical Hierarchy Process (AHP). Hasil analisis dengan metode RULA telah diusulkan rancangan stasiun kerja yang ergonomis.
PRODUKSI XANTHAN GUM SKALA PENGEMBANGAN MENGGUNAKAN LIMBAH PADAT TAPIOKA
Authors: Hasan Akhmad Endang Zainal , Yulianto Aton , Noviana Ika Mulawati Purwanti , Andini Siwi Putri
Published: July 2019

Xanthan gum merupakan polisakarida ekstra selular yang dihasilkan dari fermentasi dekstrosa oleh bakteri Xanthomonas campestris. Xanthan gum banyak digunakan dalam berbagai bidang industri sebagai stabilizer, pengental, dan pengemulsi. Dalam industri minyak, xanthan gum digunakan  untuk mengentalkan lumpur pengeboran dan membawa potongan padatan akibat pengeboran kembali ke permukaan. Proses fermentasi dilakukan pada biofermentor dimana substansinya diletakkan pada waktu bersamaan. Berdasarkan pengamatan, diperoleh xanthan gum pada komposisi limbah padat tapioka tertinggi 50 g / L dan urea 5 g / L. Optimasi dengan menggunakan Metode Permukaan Respon (RSM) dengan dua variabel yaitu limbah padat tapioka sebagai sumber karbon dan urea sebagai sumber nitrogen. Berdasarkan hasil perhitungan RSM, dapat disimpulkan bahwa setiap 16 jam respon maksimal mendekati titik pusat (0,0). Model memprediksi produksi xanthan gum optimal pada komposisi konsentrasi limbah padat tapioka sekitar 30 g / L dan urea 5 g / L. Hasil antara nilai prediksi dan nilai sebenarnya menunjukkan model dalam penelitian ini layak dan efektif. Hasil uji reologi menunjukkan karakteristik produk yang baik yang didukung oleh uji FTIR yang menunjukkan spektrum yang sama antara xanthan gum dengan xanthan gum komersial.
PERANCANGAN SISTEM INFORMASI PERAWATAN MESIN MENGGUNAKAN PENDEKATAN ANALISIS BERORIENTASI OBJEK
Authors: Kosasih Wilson , Sriwana Iphov Kumala , Purnama Winda Jeania
Published: July 2019

Makalah ini membahas sebuah rancangan sistem informasi yang berkaitan dengan manajemen perawatan mesin sehingga dapat menjalankan perawatan terencana secara optimal. Rancangan sistem informasi ini dikembangkan menggunakan pendekatan analisis berorientasi objek dengan unified modelling Language. Hasil rancangan ini akan mempermudah pelaksanaan manajemen perawatan dan manajemen berbasis data, seperti dapat mengetahui berbagai informasi mengenai personil perawatan, mesin, suku cadangnya, dan stok dari komponen, serta membuat form work order, permintaan komponen, pengontrolan harian, dan jadwal perawatan.
KARAKTERISTIK ANGKUTAN OJEK SEPEDA MOTOR DI KABUPATEN SIDOARJO (Studi Kasus Angkutan Ojek Sepeda Motor di Kecamatan Candi) THE CHARACTERISTIC OF MOTOCYCLE OJEK TRANSPORT IN SIDOARJO DISTRICT (Chase Study Motocycle Ojek Transport In Candi Sub-District)
Authors: Priyambodo Priyambodo , WR Dilla Joedi
Published: July 2019

Angkutan ojek sepeda motor muncul karena ketidakmampuan angkutan umum  (angkot/angdes/bus kota) menjangkau penumpang yang berdomisili di daerah-daerah pinggiran yang jauh dari akses angkutan umum. Tujuan dari penelitian ini adalah untuk mengetahui karakteristik dan tipologi alat angkut informal ojek sepeda motor. Dengan menggunakan alat analisis statistik deskriptif kualitatif, hasil penelitian antara lain menunjukkan bahwa karakteristik angkutan ojek sepeda motor di Kecamatan Candi Sidoarjo memiliki pola pelayanan tidak sama dengan pola pergerakan angkutan umum lainnya (bemo/angkot/angdes/bus kota). Angkutan ojek sepeda motor ini tidak berjadwal serta tidak memiliki rute yang pasti. Jarak tempuh operasional ojek sepeda motor tidak terbatas dan bervariasi dengan rute-rute yang tidak terlayani oleh angkutan umum angdes/angkot/bus kota. Karakteristik pola pergerakan angkutan ojek sepeda motor berada di luar jaringan angkutan umum angkot/angdes/bus kota. Karakteristik tarif yang dikenakan kepada penumpang sesuai dengan kesepakatan antara pengojek dengan penumpang dengan proses tawar menawar.
EVALUASI PELAYANAN KERETA API EKONOMI AC JARAK JAUH (STUDI KASUS KERETA API EKONOMI AC GAJAH WONG) THE EVALUATION OF RAIL TRANSPORTATION CLASS ECONOMY AC FOR LONG DISTANCE (CASE STUDY OF GAJAH WONG ECONOMY AC TRAIN)
Authors: Suharti Erna
Published: July 2019

Transportasi kereta api sebagai angkutan massal sudah saatnya dibenahi dan dikembangkan untuk memberikan kenyamanan kepada penumpang dengan meningkatkan kuantitas dan kualitas pelayanan. Salah satu pembenahan transportasi kereta api yang saat ini dilakukan oleh PT. Kereta Api Indonesia (Persero) adalah mengoperasikan kereta api (KA) ekonomi-AC untuk rute kereta api jarak jauh. Tujuan penelitian ini adalah untuk mengetahui tingkat kepuasan konsumen terhadap pelayanan kereta api ekonomi AC jarak jauh dan juga harapan penumpang untuk peningkatan pelayanan di masa depan. Penelitian dilakukan di KA ekonomi AC Gajah Wong dengan survei wawancara on board. Hasil analisis variabel aspek pelayanan, KA ekonomi AC Gajah Wong sudah memberikan pelayanan yang baik kepada penumpang namun belum memberikan kepuasan secara efektif. Hal ini terbukti dengan tingkat kepuasan dari indikator sarana dan sistem informasi adalah sebesar 75,018%, dari indikator operasional sebesar 72.773%, dan indikator SDM/Petugas adalah sebesar 74,728%, serta tingkat kepuasan total konsumen adalah sebesar 74,380% yang berada pada range Cause For Concern (71 % < X ≤ 77%).
ANALISIS PELUANG PENGGUNA JASA BERSEDIA MENGGUNAKAN JASA PELAYANAN PENGIRIMAN BARANG DOMESTIK (Studi Kasus: Service YES PT. JNE Ex. Jakarta-Jawa Timur) CHANCE ANALYSIS FOR THE SERVICES USER FOR DOMESTIC DELIVERY (STUDY CASE OF YES SERVICE PT. JNE EX. JAKARTA-EAST JAVA)
Authors: Parhusip Maria Magdalena Piolenta
Published: July 2019

PT. Jalur Nugraha Ekakurir (JNE) sebagai perusahaan pengiriman barang menawarkan  beberapa service layanan, namun seiring permasalahan kemacetan di jalan menyebabkan biaya operasional yang semakin meningkat. Hal ini menyebabkan perusahaan tersebut mengambil langkah menaikkan biaya pengiriman barang, namun harus terlebih dahulu mengetahui batas tarif yang masih dimaklumi oleh pengguna sesuai dengan kualitas pelayanannya, yang tepat sesuai dengan kebutuhan calon pengguna. Penelitian  ini dilakukan dengan wawancara langsung kepada PT. JNE dan hasil kuesioner  kepada  pihak pengguna jasa, kemudian diolah dengan teknik state preference dan permodelan ordered probit sehingga diketahui besaran probabilitas kesediaan calon pengguna jasa di PT. JNE. Hasil penelitian menunjukkan bahwa pengguna jasa bersedia menggunakan jasa pengiriman barang apabila jasa layanan yang harus ada di PT. JNE pada service YES adalah jaminan akan uang kembali, jaminan akan barang yang rusak, packaging barang  dan tarif pengiriman barang. Besaran prosentase bersedia menggunakan jasa pengiriman barang jika fasilitas pelayanan ini tidak disediakan adalah sekitar 1,3% . Prosentase tersebut akan  naik menjadi 84,45% jika keberadaan jasa pengiriman barang menyediakan kebijakan dengan menaikkan layanan dalam hal jaminan akan uang kembali, jaminan akan barang yang rusak, packaging barang  dan tarif pengiriman barang.
Optimization of Oil Production by Gas Lift Macaroni in “X” Field
Authors: Chrismon Chrismon , Kartoatmodjo R.S. Trijana , Mardiana Dwi Atty
Published: July 2019

The background of this research was that in X Field many gas wells have stopped flowing years ago and not economical production anymore. Therefore the company has decided to use gas lift which is proper to the sandy oil reservoir characteristic. The tubing of the well has no gas lift mandrel completion as the well was a gas producer. The objectives of this research was that to design gas lift macaroni (GLM) to optimize oil production rate. The design of this  research was  that  the  new  slim tubing 1.315  inch, called as macaroni tubing, was installed inside  the existing 3. 5inch  tubing. The gas lift valves are installed inside macaroni tubing. The data collection consists of reservoir data, surface data, and well diagram.The result of this research was that the gas lift macaroni installation can generate oil production rate of 425 STB/day of the three wells. Gas lift valves of well A is four valves, well B is five valves, and well C is three valves. The deviation of software and manual calculation of valves depth is less than 1%. The cost saving by installing gas lift macaroni instead of workover operation to change the existing tubing with new tubing equipped with gas lift valves is USD 5,620,955 of three wells.
Determination of Rock Type Using Hydraulic Flow Unit Concept to Predict Permeability with Artificial Neural Network
Authors: Yasmaniar Ghanima , Sitaresmi Ratnayu , Prakoso Suryo
Published: July 2019

Permeability is one of the important of reservoir characteristics, but is difficult to predict it. The accurate permeability values can be obtained from core data analysis, but it is not possible to do at all of the well intervals in the field. This study used 191 sandstone core samples from the Upper Cibulakan Formation in the North West Java Basin. The concept of HFU (Hydraulic Flow Unit) developed by Kozeny-Carman is used to generate the relationship between porosity and permeability for each rock type. Afterward, to estimate the permeability value at uncored intervals, the statistical methods of artificial neural network based on log data are used on G-19 Well, G Field which is located in the North West Java Basin. Based on core data analysis from this research, the reservoir consists of eight HFU with different equations to estimate permeability for each HFU. From this reserarch, the results of permeability calculations at uncored intervals are not much different from the core data at the same depth. Therefore the approach of permeability prediction can be used to determine the value of permeability without performing core data analysis so that it can save the company expenses.
Design of Flowline, Separator, and Slug Catcher in X Field
Authors: Aryana I Gede Dian , Fathaddin Muhammad Taufiq , Sulistyanto Djoko
Published: July 2019

The use of the pipeline is the safest method in sending oil and gas from one area to another in oil and gas transportation system. The only challenge is to keep the pressure drop in the pipeline as small as possible to avoid high pressure differences. This pressure difference can result in reduced production flow rate and affect the flow pattern in the pipeline. The condition can lead to high possibility of a slug on pipelines that drain multiphase flow. Slug becomes one of the main concerns transport processes multiphase flow in pipelines. The emergence of slug in the pipeline could cause an unstable hydrodynamic conditions will continue to affect the liquid level in the inlet separator and cause flooding in the separator. Some of the conclusions mainly on the diameter of the pipeline, the size of the slug catcher and the size of the separator obtained from the calculation based on the study of literature and simulations with software HYSIS and OLGA. Design slug catcher to accommodate the number of processes that occur in the production transportation of X oil and gas field through a pipeline 10 inches along the 12 km with 20.68 m3 volume of slug using 3 (three) finger with diameter 28 inches and length of 10 meters each. For the separation process of oil and gas in the first five (5) years of X oil and gas field  which has a high production of oil and condensate will require separator with 30 inches diameter, seam to seam height of 8.1 ft or 2.5 meters, with retention time for 2 minutes and the 3.2 slenderness ratio of the vertical separator.
Production Allocation on Commingled Two Layer Well Using Fingerprint Method
Authors: Zuhri Fahrudin , Sudibjo Rachmat , Kartoatmodjo R. S. Trijana
Published: July 2019

Production proportion ratio study of commingled well two layers reservoir has been developed by geochemistry approaching, with oil reservoir fingerpint methode by using Gas Chromatography then processed by Chemstation software. The study is developed to solve the commingled well production alocation problem in oil field. There are 4 oil samples will be analyzed to represent each layer and commingle production oil sample in 2009 and 2015.Result of study, figures out that oil fingerprint from commingle production has a difference as long as production time. Oil sample that taken from different commingle production time is predicted to produce a different ratio contribution form each layer of reservoir. Every layer reservoir has a different contribution from 2009 to 2015. Result of production proportion ratio study can be applied to decisionmaking of reservoir developement in an oil field, especially for well completion and enhanced oil recovery. This methode is proven to be a solution of commingle production problem of two layers reservoir. Fingerprint methode to determine production proportion ratio of commingled well production is the first in Indonesia.
Economic Evaluation of Y Gas Field Development Using Reservoir Simulator
Authors: Panjaitan Anita Theresa , Sudibjo Rachmat , Fenny Sri
Published: July 2019

Y Field which located around 28 km south east of Jakarta was discovered in 1989. Three wells have been drilled and suspended. The initial gas ini place (IGIP) of the field is 40.53 BSCF. The field will be developed in 2011. In this study, reservoir simulation model was made to predict the optimum development strategy of the field. This model consisted of 1,575,064 grid cells which were built in a black oil simulator. Two field development scenarios were defined with and without compressor. Simulation results show that the Recovery Factor at thel end of the contract is 61.40% and 62.14% respectively for Scenarios I and II without compressor. When compressor is applied then Recovey Factor of Scenarios I and II is 68.78% and 74.58%, correspondingly. Based on the economic parameters, Scenario II with compressor is the most attractive case, where IRR, POT, and NPV of the scenario are 41%, 2.9 years, and 14,808 MUS$.
TÜRKİYE’DE ENERJİ TÜKETİMİ VE EKONOMİK BÜYÜME: GRANGER NEDENSELLİK YAKLAŞIMI
Authors: YÜKSEL YILDIRIM Cevriye
Published: July 2019

Enerji, sanayileşme devrimi sonrası üretim ve tüketim faaliyetlerinin önemli ve zorunlu bir girdisi haline gelmiştir. Keza ülke ekonomileri için büyümenin belirleyicisi olan enerji ekonomik büyümenin de temel kaynağıdır. Bu bağlamda hem gelişmiş hem de gelişmekte olan ekonomiler için ekonomik büyüme, enerji tüketimi ve karbon emisyonu arasındaki ilişki fazlaca dikkat çeken ve incelenen bir konu haline gelmiştir. Bu çalışmada ekonomik büyüme, enerji tüketimi ve karbon emisyonu arasındaki ilişki Türkiye açısından incelenmeye çalışılmıştır. Veri seti yıllık olarak elde edilmiş olup 1961-2014 dönemlerini kapsamaktadır. Verileri analize uygun hale getirmek için öncelikle zaman serilerinde uygulanan durağanlık testlerinden ADF ve PP testleri yapılmıştır. Daha sonra değişkenler arasında eşbütünleşme analizi yapılmıştır. Eşbütünleşme sonucunda VEC modeli kurulmuştur. Sonrasında Granger nedensellik analizi yapılmıştır. Analiz sonucunda kişi başı GSYH’den kişi başına enerji tüketimine doğru tek yönlü ve kişi başı enerji kullanımından kişi başı karbon emisyonuna doğru tek yönlü bir nedensellik olduğu sonucuna ulaşılmıştır.
Performance Measurement for Distributed Systems using 2TA and 3TA based on OPNET Principles
Authors: Ibrahim Bishar R. , Zeebaree Subhi R.M. , Hussan Bzar Kh.
Published: July 2019

This paper presents a comparative study of two designs and analysis: Two Tier Architecture (2TA) and Three Tier Architecture (3TA).  By using Optimized Network Engineering Tool (OPNET) modeler network-efficiency is done evaluation. OPNET, a professional simulation tool, is relied on to check the system with many clients from networks for both 2TA and 3TA. The outcomes demonstrate that 3TA is more capable than 2TA in term of data assessment is done utilizing OPNET modeler, which gives a convenient and easy-to-utilize platform for simulating extensive criterion networks. So, it will give more achievement when extended with many clients from networks with eight or sixteen clients. The models are utilized to study how the performance of the network is influenced by the different design decisions that are made to upgrade the system. This paper likewise examines ways in which the OPNET modules have been produced so that students could learn computer network concepts, and not exactly how to use OPNET software.
12 Facts about Temporary Urbanists
Authors: Whitaker Stephan D.
Published: July 2019

Urban areas seem to be enjoying a renaissance of sorts due in part to the many young professionals who have moved into central neighborhoods since the 2000s. Many of these young professionals are thought to move back out after they have started families, but the details of these migration patterns are not well-known. I analyze data from the Federal Reserve Bank of New York/Equifax Consumer Credit Panel to answer 12 questions about these temporary urbanists—those who choose to move into an urban neighborhood and spend part of their early adulthood there.
The Trump Administration’s destruction of the Economic Research Service: An American Tragedy
Authors: Nestle Marion
Published: July 2019

Not relevant
Influência da arborização e da edificação na dispersão de material particulado respirável em cidade costeira altamente urbanizada (Fortaleza, CE-Brasil) (Influence of afforestation and building on the dispersion of respirable particulate material in a highly urbanized coastal city (Fortaleza, CE-Brazil))
Authors: Marques Elissandra Viana , Rocha Camille Arraes , Santos Rafael Pereira dos , Ramos Fernanda Caroline Leal , Lima Joyce Leylane Rocha , Cattony Carlos Mattoso , Silva Marcus Vinicius Chagas da , Zanella Maria Elisa , Cavalcante Rivelino Martins
Published: July 2019

O presente artigo tem como intuito abordar a influencia existente entre o índice de arborização e edificação com níveis do material particulado respirável (MP 2,5µm) e condições atmosféricas em áreas utilizadas para práticas de esportes e lazer no centro urbano de Fortaleza, CE, tendo em vista a melhora ou piora das condições atmosféricas em locais, predominantemente, ocupados por vegetação ou edifícios. Assim, foram coletados dados primários das concentrações de MP2,5 com a amostragem ativa e dados meteorológicos com uma estação meteorológica portátil em 7 pontos de amostragem distribuídos no Município. Os índices de Arborização e Edificação foram feitos por meio do Software ArcGis, consistindo no mapeamento e delimitação da área de cobertura por copas de árvores e edifícios nos pontos de amostragem selecionados. Assim, foi realizada a correlação estatística dos dados, onde verificou-se, como resultado, os tipos de correlações existentes, classificando-as como positivas ou negativas e fortes ou fracas. Assim, esse trabalho permitiu observar a influência entre as concentrações de MP2.5 na atmosfera e as variáveis meteorológicas, e a relação dos índices construídos com o MP2.5 e com a velocidade do vento.AbstractThe present article aims to address the influence between the index of vegetation and edification with respirable particulate matter levels (PM 2.5μm) and atmospheric conditions in areas used for sports and leisure practices in the urban center of Fortaleza, CE, with a view to improving or worse weather conditions at locations predominantly occupied by vegetation or buildings. Thus, primary data of the concentrations of PM2.5 with active sampling and meteorological data were collected with a portable meteorological station in 7 sampling points distributed in the Municipality. The vegetation and edification indexes were made through ArcGIS Software, consisting of the mapping and delimitation of the coverage area by crowns of trees and buildings at the selected sampling points. Thus, the statistical correlation of the data was performed, where as a result the types of correlations were found, classifying them as positive or negative and strong or weak. Thus, this work allowed to observe the influence between the concentrations of PM2.5 in the atmosphere and the meteorological variables, and the relation of the indices constructed with PM2.5 and with the wind speed.Keywords: atmospheric pollution, urban vegetation, verticalization, particles, meteorological factors
Macroeconomic determinants of corporate failures in Poland
Authors: Jędrzej Siciński
Published: July 2019

This study aims at identifying macroeconomic factors of corporate bankruptcy.The main objective of this work is to analyse quantity of bankruptcy in Poland in 2000-2017 and attempt to estimate parameters of the regression model where the number of insolvent companies is explained by variance of macroeconomic factors. Essential data has been collected from GUS and Coface resources. Based on selected, macroecomic variables, econometric cause-effect model has been developed. The equation has been estimated by the Ordinary Least Squares method (OLS). A statistical investigation resulted in observing few macroeconomic factors with influence on corporate failure intensity in Poland, among others: expenditures on consumer goods and services, export and exchange rates.
The Effect of Rosehip Seed Supplementation into Laying Hens Diets on Performance, Egg Quality Traits, Yolk Lipid Profile and Serum Parameters
Authors: KAYA Hatice , KAYA Adem , ESENBUĞA Nurinisa , Macit Muhlis
Published: July 2019

This study was carried out to determine the effect of dietary rosehip seed (RS) supplementation into layer diets at different levels on performance, egg quality traits and some serum parameters. A total of 72 Lohmann layers, 46 weeks old, were divided into three treatment groups. The control group was fed with commercial layer diet (K), and the other two groups were fed with basal diet + 10% ground rosehip seeds  (K1) and basal diet + 15% ground rosehip seeds  (K2) for 12 weeks.  The water and feed were provided as ad-libitum during the trial. The rosehip seed supplementation level at 15% into layer diets increased the feed consumption and egg yield (p<0.05), and decreased the damaged egg ratio. Though some egg quality traits such as the yolk colour, shell thickness and shell weight  increased (p<0.05) in eggs from K2 group, there were  no significant differences (p> 0.05)  among the groups in respect to other egg quality traits such as shape index, shell strength, albumen and yolk indexes and Haugh unit values. Total cholesterol, cholesterol esters, free fatty acids and triglyceride contents in the egg yolks from treatment groups were not affected by dietary treatments (p> 0.05). Serum parameters such as albumin, total cholesterol, VLDL, triglyceride and ALT values increased (p <0.05) with the RS supplementation at level of 15%  into layer diet. Results showed that rosehip seed supplementation into layer diets may be beneficial to improve egg quality traits especially such as shell thickness and to decrease damaged egg ratio. But further investigations are needed to clarify the use of rosehip seed in layer diets and its effects on performance, egg quality and serum parameters.
Comparison of Spray Transfer and Penetration of Different Hydraulic Nozzles at Low Application Volume
Authors: SAYINCI Bahadır , DEMİR Bünyamin , ÇÖMLEK Rüçhan , BOYDAŞ Gökalp
Published: July 2019

Seven hydraulic nozzle types (standard-ST;

hollow cone-KH; multirange-LU; standard with narrow angle-STD; antidrift-AD;

air-induction-IDK; twinjet air-induction-IDKT) were compared in terms of spray

transfer and drop penetration. Spray treatments were carried out at a constant

application volume of 90 L ha-1 with a linear-motion simulator. WSP’s

were placed onto metal poles and into artificial plant at both horizontal and

vertical planes. Two different operating pressures (250 and 500 kPa) and the

nozzle position angles (0º and 45º) were used in the experiments. Spray

transfer levels at vertical plane were quite lower than the spray transfer levels

at horizontal plane. The greatest spray coverage was achieved with LU and ST

nozzles producing fine droplets. The greatest drop penetration at vertical

plane was obtained from IDK nozzle. Only 25% of the drops transferred to the

open target reached the stem and root collar region of the plant canopy. With

increasing operating pressures, spray coverage increased by 1,17 times at

horizontal plane and 1,50 times at vertical plane. With increasing nozzle

position angles, spray coverage at vertical plane increased by 40%. The

greatest coverage was achieved on front surface of the vertical target and

drops reaching to side and rear surfaces were quite low.
Effects of Rhizobacteria on Plant Development, Quality of Flowering and Bulb Mineral Contents in Hyacinthus orientalis L.
Authors: PARLAKOVA KARAGÖZ Fazilet , DURSU Atilla , KOTAN Recep
Published: July 2019

Size of bulbs is directly proportional to the quality of the flower, the commercial value of the bulb and getting more bulblet. The research was carried out to evaluate the effects of PGPR on plant growth parameters, flowering, bulb quality and bulb mineral contents in hyacinth (Hyacinthus orientalis L. cv. Aiolos) under greenhouse condition. In the study, there were 5 applications: (T1) Pseudomonas putida strain RCK-42A, (T2) Kluyvera cryocrescens strain RCK-113C, (T3) Paenibacillus polymyxa strain RCK-12E, (T4) Bacillus subtilis strain RCK-17C, and (T5) Control (uninoculated bacteria). The surface-sterilized bulbs were incubated separately by shaking at 80 rpm for two hours at 28 ºC to coat the bulbs with the bacteria. The chlorophyll content (50.02), leaf length (26.03 cm), leaf area (268.38cm2), flower fresh and dry weight (15.54 g and 0.88 g) in T2 (Kluyvera cryocrescens strain RCK-113C) was found as the maximum according to other applications. The highest leaf width (6.37 cm) and the highest floret number were observed in T4. It was shown that the maximum bulb diameter (42.57 mm), bulb length (40.01 mm) and bulb weight (12.01 g) were determined in T2. The maximum N (2.90%), P (1.98%) and Ca (1.74%) were found in T3. Maximum Fe (0.48 mg kg-1), Mn (151.20 mg kg-1) and Zn (35.28 mg kg-1) were found in T1. Use of especially Kluyvera cryocrescens strain RCK-113C and Pseudomonas putida strain RCK-42A bacterial isolates may be effective in maintaining the sustainability of the environment and growing medium in the cultivation of hyacinth and also the development of bio fertilizer.
Presentación
Authors: Herrera Mena Sajid Alfredo , Claps Arenas María Eugenia
Published: July 2019

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Espacios y opinión pública durante la anexión del Reino de Guatemala a México: San Salvador, 1821
Authors: Herrera Mena Sajid Alfredo
Published: July 2019

Entre noviembre y diciembre de 1821, tras la independencia de España, las autoridades interinas del Reino de Guatemala, los republicanos sansalvadoreños y los pueblos discutieron sobre cuál era el espacio público legítimo para decidir el futuro político del istmo. Inicialmente, se apostó por realizar un Congreso Nacional; sin embargo, factores endógenos y exógenos hicieron posible que los pueblos, en concejo abierto, tomaran una decisión abrumadora por la unión al Imperio mexicano. El objetivo de este ensayo es dar cuenta de este proceso por el cual, en momentos en los que se cimentaban las bases del sistema representativo, se impuso la voluntad directa de los pueblos a través de su opinión expresada públicamente.