bluuebunny/crossref_metadata_2025_split huggingface dataset:
Forecasting CEMAC’s foreign exchange reserves in presence of unanticipated changes in oil prices: an interrupted time series modelling
Authors: Assoumou-Ella Giscard 
Published: May 2019

Abstract
The foreign exchange reserves of the Central African Economic and Monetary Community (CEMAC) countries have decreased since the fall of world oil price that began in July 2014. In fact, five of the six of the CEMAC countries are oil producers. Based on interrupted time series modeling, the analysis shows that the unanticipated changes in oil prices immediately led to a decline in the level of their foreign exchange reserves. The trend is also decreasing. The model predicts a continued degradation of these reserves if oil prices remain low. In these conditions, the CEMAC could experience a currency crisis if economic policies implemented in this region do not lead to a return of economic growth.
Safety of Sea Vessels in the Aspect of Model Research
Authors: Mironiuk Waldemar 
Published: May 2019

Abstract
The article presents a modern method of modeling stability and unsinkability of vessels using physical models of warships and merchant ships. Model tests of watercraft are carried out primarily to assess their marine properties in various operational states. The purpose of this research is to create technically useful calculation methods for forecasting the behavior of a vessel at sea in various meteorological conditions. The main role played by model tests and measurements on real objects is the verification of these methods. Both types of experiments are also a source of inspiration for creating new modified mathematical models and accounting methods based on them. These tests can contribute to the improvement of the safety of vessels at sea.
Use of Faultlessness Indicator to Rate Human Reliability in Human – Operating Aircraft System
Authors: Maciejewska Marta , Fuć Paweł , Galant Marta , Kardach Monika 
Published: May 2019

Abstract
In the M–T–E (man – technology – environment) system, human has a main influence on aircraft. In the article focused on M–T relations, which means human – technology, more accurately on a man impact on a plane, which is specify as human factor [3]. The role of human in this system can lead to an accident, caused by human mistake. In this article fa main question is how man effects on maintenance aircraft. To purpose the analysis the research was made with use of technical object – a simulator, which is located in Simulator Research Laboratory in Institute of Combustion Engines and Transport at Poznan University of Technology. The subject of analysis was a correctness of performing procedures, which every pilot is obligated to make before start operation. Based on tabular research result the analysis of chosen area was made.
Analysis of the Electronic Device Exploitation Process – Research Results
Authors: Paś Jacek , Buchla Sławomir 
Published: May 2019

Abstract
The paper presents an analysis of the operation process of the selected electronic device (ED) like tablet type X. The damage of ED is caused by environmental exposure or use contrary to the applicable operating instructions. The damage initiates the process of changing many or one of the usable features of a specific ED. This usually leads to damage, i.e. changes in the properties of components of a specific ED (e.g. touch screen, compact systems, resistors, capacitors, battery cells, etc.). The basic operational indicators of the ED were determined based on the analysis of the type of damage to all devices that were reported to the service center – 2 391 notifications. The research was carried out on the company’s website, and the duration was 15 months from the time of the introduction of the ED to the market.
Analysis of distribution of precipitation duration and amounts in Legnica in the period of 1966–2015
Authors: Jakubczyk Teresa 
Published: May 2019

Abstract
The paper presents the results of analysis of duration of precipitation sequences and the amounts of precipitation in individual sequences in Legnica. The study was aimed at an analysis of potential trends and regularities in atmospheric precipitations over the period of 1966–2015. On their basis a prediction attempt was made for trends in subsequent years. The analysis was made by fitting data to suitable distributions – the Weibull distribution for diurnal sums in sequences and the Pascal distribution for sequence durations, and then by analysing the variation of the particular indices such the mean value, variance and quartiles. The analysis was performed for five six-week periods in a year, from spring to late autumn, analysed in consecutive five-year periods. The trends of the analysed indices, observed over the fifty-year period, are not statistically significant, which indicates stability of precipitation conditions over the last half-century.
Influence of runoff of suspended solids on quality of surface water: Case study of the Szreniawa River
Authors: Kowalczyk Agnieszka , Smoroń Sylwester , Kopacz Marek 
Published: May 2019

Abstract
Research was conducted in selected points of the Szreniawa River basin (area 712 km2) located in the Miechowska Upland and the Proszowice Plateau. In the years 2016–2017 water samples from the Szreniawa River were taken monthly and the concentration of suspended solids was determined by filtration. The concentration of biogenic components NO3-N, NH4-N and PO4-P was determined by a colorimetric method, using an automatic flow analyser. The average concentration of suspended solids ranged from 192 to 390 mg·dm−3 (with minimum values of 5–20 mg·dm−3 and maximum 837–3937 mg·dm−3) at individual points. There was an upward trend between the content of suspended solids and the concentration of biogenic components. An extremely high concentration of suspended solids happened during storm-like precipitation at the end of June 2017 and amounted to 3937.2 mg·dm−3. The concentration of biogenic components was also highest in this period and amounted to 2.50 mg·dm−3 of NO3-N, 0.49 mg·dm−3 of NH4-N and 1.18 mg·dm−3 of PO4-P. At low precipitation the concentration of suspended solids was also low (5.0 mg·dm−3). A similar pattern was observed for the concentration of biogenic components which was 0.39 mg·dm−3 of NO3-N, 0.17 mg·dm−3 of PO4-P and 0.08 mg·dm−3 of NH4-N.
Modeling of Synergetic Action of Radiation and Chemical Pollution on the Environmental Safety
Authors: Remez N. , Dychko A. , Yevtieieva L. , Kraychuk S. , Ostapchuk N. , Oliinyk J. 
Published: May 2019

Abstract
The present paper provides a simple mathematical model that describes the synergistic interaction of environmental factors that occur in urban ecosystem. The model predicts the value of maximum synergistic action and the condition for its achievement, as well as implies the dependence of synergistic action on the intensity of the agents used and the proportion of irreversible damages after the combined effects. The developed mathematical model can be used to predict the accumulation of pollution in the ground layer of soil.
Investigation of EDFA Performance in DWDM Transmission Systems Under Different Operating Conditions
Authors: Putrina J. , Olonkins S. , Bobrovs V. , Porins J. 
Published: May 2019

Abstract
The article investigates dependence of EDFA performance on its operating conditions. First of all, the impact of changes in channel spacing on the quality of the amplifier signal and on the desired EDFA configuration is observed – three different values of channel spacing are considered – 37.5 GHz, 50 GHz and 100 GHz. Afterwards, the impact of EDFA positioning on the quality of the amplified signal and the desired configuration is assessed. Three different EDFA positioning scenarios are considered – when the EDFA is used as a power booster, as an in-line amplifier and as a preamplifier. In all cases, such configuration of the EDFA is found that can ensure bit-error ratio (BER) values below 1·10−9 in all channels of the system. To assess the performance of the amplifiers, power penalty values are obtained in respect to identical transmission systems but without amplification.
Magnon and Phonon Excitations in Nanosized NiO
Authors: Mironova-Ulmane N. , Kuzmin A. , Sildos I. , Puust L. , Grabis J. 
Published: May 2019

Abstract
Single-crystal, microcrystalline and nanocrystalline nickel oxides (NiO) have been studied by Raman spectroscopy. A new band at ~200 cm−1 and TO-LO splitting of the band at 350–650 cm−1 have been found in the spectra of single-crystals NiO(100), NiO(110) and NiO(111). The Raman spectra of microcrystalline (1500 nm) and nanocrystalline (13–100 nm) NiO resemble those of the single crystals. They all contain the two-magnon band at 1500 cm−1, indicating that the oxides remain at room temperature in the antiferromagnetic phase. Besides, a new sharp Raman band has been observed at 500 cm−1 in nanocrystalline NiO. Its temperature dependence suggests the magnetic origin of the band, possibly associated with the one-phonon–one-magnon excitation at the Brillouin zone centre.
On the Solutions of Games in Normal Forms: Particular Models based on Nash Equilibrium Theory
Authors: Turbay Gabriel , Reyes Giovanni E. 
Published: May 2019

Abstract
The main objective of this paper is to present in a deductive way, solutions for general games played under normal conditions following competitive paths, applying core principles of Nash equilibrium. Here the normal approach implies strategic choices available for each player, formulated and implemented without any information concerning specific choices to be made by others players. It is convenient to keep in mind that John von Neumann and Oskar Morgenstern outlined a set of conditions for Nash equilibrium for a game in normal form, proposed as the basic framework to analyze the conditions and requirements for a particular Nash equilibrium to be the solution of the game. Theorems that exhibit imbedding relations among the Nash equilibriums of the game are given to examine the role of pre-play communication and the imbedding order in equilibrium selection. A core argument to claim here is that a generic case of Nash equilibriums that are strategically unstable relative to maxi-min strategies is given to emphasize the role of moves of the third kind and pre-play communication in correlated and coordinated solutions and the need to account for cases where Nash equilibriums are not plausible or even desirable as solutions for a game in normal form.
Empirical Test of Pollution Haven Hypothesis in Nigeria Using Autoregressive Distributed Lag (Ardl) Model
Authors: Ayadi Folorunso Sunday , Mlanga Sunday , Ikpor Monday Isaac , Nnachi Robert A. 
Published: May 2019

Abstract
This study set out to investigate the reality or otherwise of the pollution haven hypothesis in Nigeria using data from 1970 to 2017 and using the autoregressive distributed lag (ARDL) models both in the short and long run. The study used FDI inflows as measure of economic activity and carbon dioxide emission as a measure of regulatory stringency. The study finds the previous FDI inflows as a significant determinant of current FDI both in the short and long run. This implies that the more FDI an economy attracts, the more potentials it has to further attract more FDI. Population, a measure of demand condition of the host economy is positively and significantly related to FDI inflows both in the short run and in the long run. Trade openness has a positively significant impact on FDI inflows in the long run, meaning that globalization encourages FDI inflows. A year lag of the FDI has a positively significant impact on FDI inflows in the long run. This suggest that pollution haven hypothesis which states that industries with polluting technologies tend to relocate to countries or areas (pollution havens) with lax or less stringent environmental regulations is a reality for Nigeria. The implication of this is that government of Nigeria must weigh the beneficial impact of FDI inflows against the pollution impact of ‘dirty’ FDI before deciding or setting its environmental policy.
The Significant Correlation between Self Efficacy and the Role of Islamic Education Teachers as a Society Change Agent
Authors: Jaafar Noornajihan , Muhamad Nurul Asia Fasehah , Tamuri Ab. Halim , Ahmad Azhar Haji , Hussin Nur Hanani , Daud Mohd Khamal Md. , Ishak Maziahtusima 
Published: May 2019

Abstract
The role of Islamic education teacher (IET) as society change agent (SCA) requires a strong internal motivation factor. It begins with confidence in self-ability i.e. self-efficacy (SE) in implementing the trust given to them. This study aims to assess the relationship between SE ITE in Malaysia with the role of SCA in society. This quantitative study has involved 1382 IETs in Malaysia. The sampling technique used was cluster sampling and based on random sample selection. The findings show that the SE level of ITE is at high level. But the role of IET as SCA is at less satisfactory level. Furthermore, SE has been identified to have a significant relationship with IET’s role as SCA but was at weak level. The implication is, the study finds that the focus should be on restoring ITE’s mindset about the community’s work and developing the ummah, as well as the 21st century teaching and learning (T&L) skills. In fact, IET needs to be given practical exposure to engage in society through NGOs, surau, mosques, da’wah organization and government agencies.
Assessing Quality of Pharmacist-Led Education for Patients with COPD Using the Lung Information Needs Questionnaire: A Pilot Study
Authors: Barnett Teri Alisha , Jenkins Anastasia , Bouldin Alicia , Crumby Melvin , Morgan Alice Kelly , Warren Michael 
Published: May 2019

Background: Transitioning a patient from the hospital to home is an area of vulnerability for patients with Chronic Obstructive Pulmonary Disease (COPD). Patients with COPD frequently readmit as they often do not understand their disease state, medications or when to seek medical attention.
Objectives: The objective of this study is to determine the impact that pharmacist-led education has on a patient’s understanding of their disease state by assessing the results of the Lung Information Needs Questionnaire (LINQ).
Methods: This study uses a quasi-experimental design to formally assess pharmacist-led education provided to patients with COPD using the LINQ. The LINQ was used to assess knowledge of the disease state and medications before and after receiving education on disease state management, smoking cessation and proper medication use.
Results: A total of 17 patients completed the LINQ. The survey results showed a statistically significant improvement in patient understanding in 4 of the 6 targeted areas.
Conclusion: Results from the formal assessment using the LINQ suggest that pharmacist-lead education for COPD patients is beneficial and reliable. This study presents a continued need for patient education and research in this high-risk patient population.

Article Type: Original Research
Exploring the Impact of Technology Use with Cosmetic Science Guest-Speakers: A Qualitative Study
Authors: Baki Gabriella , Peeters Michael J 
Published: May 2019

Improvements in current classroom technology such as video conferencing have allowed geographically-distant guest-speakers to participate in teaching. However, is time and effort that faculty may spend coordinating guest-speakers helpful for their students’ learning? Relevance is key to motivation and learning, and therefore, it would seem that professionals who can share industry applications and their experiences should help promote relevance. During the core application-based cosmetic science coursework in an undergraduate cosmetic science and formulation design degree at the University of Toledo, multiple industry experts come in as guest-speakers. The majority of them join remotely via a real-time video conferencing tool. The purpose of this study was to both explore the impact of guest-speakers on these students’ learning, as well as to understand how guest-speakers might also value these experiences. Twenty-two students and sixteen guest-speakers participated. Using a qualitative approach, authors used an inductive thematic analysis of transcripts from focus-groups of students and interviews of guest-speakers. Twenty-one codes were identified, and five themes were constructed for both the student and guest-speaker groups. Themes from both groups were integrated and distilled into an essence related to teaching and learning. Our results indicated that students greatly appreciated the relevance from guest-speakers to augment their introductory/foundational instruction from faculty. From guest-speakers’ perspectives, teaching students was formative towards developing informed future coworkers for the cosmetic industry. Technology enabled much of this. Overall, we believe that professional, experienced guest-speakers can make an impact on students. We hope that other higher education institutions might consider technology to foster use of guest-speakers within their programs.

Article Type: Original Research
Sudahkah UKM Cor Kuningan Mengimplementasikan Keputusan Operasional?
Authors: Marlena Novi 
Published: May 2019

AbstrakKeputusan manajemen operasional banyak dibahas pada industri besar, tetapi seringkali terabaikan untuk usaha kecil. Obyek penelitian adalah UKM Whisnu yang bergerak dibidang kerajinan tangan yaitu cor kuningan. Meskipun dalam proses operasional UKM Whisnu masih menggunakan peralatan manual dan proses produksi memiliki ketergantungan yang tinggi dari kreativitas karyawan, produk handmade cor kuningan UKM Whisnu memiliki permintaan yang cukup tinggi setiap bulannya. Jenis penelitian ini adalah eksploratif dengan pendekatan kualitatif. Teknik yang digunakan untuk mengumpulkan data menggunakan observasi dan wawancara secara langsung dengan pemilik UKM Whisnu. Teknik analisis data penelitian terdiri dari empat tahapan yaitu pengumpulan data, reduksi data, penyajian data, dan penarikan kesimpulan. Hasil penelitian sepuluh keputusan operasional yang sudah dijalankan oleh pemilik UKM selaku manajer operasional berkaitan dengan perancansgan produk, pengelolan kualitas, perancangan proses, perancangan kapasitas, strategi lokasi, strategi tata letak, perancangan sumber daya manusia dan perancangan pekerjaan, pengelolaan rantai pasokan, pengeloaan persediaan dan perencanaan kebutuhan bahan baku, dan pemeliharaan. Have Already The Cor Of UKM Kuningan Implementing Operational Decisions? Abstract Operational management decisions are mostly discussed in large industries, but are often overlooked for small businesses. The object of the research is SME Whisnu which is engaged in handicraft ie brass cast. Although in SME Whisnu's operational process still using manual equipment and production process has high dependence of employee creativity, SME Whisnu brass handmade products have high demand every month. This type of research is explorative with a qualitative approach. Techniques used to collect using observations and interviews directly with the owner of SME Whisnu. Technique of research data analysis consist of four stages that is data collection, data reduction, data presentation, and conclusion. The results of the ten operational decisions conducted by the owners of SMEs as operational managers related to product design, quality management, process design, capacity design, location strategy, layout strategy, human resource design and job design, supply chain management, inventory management and raw material requirements planning, and maintenance.
Promosi Dan Harga pada Kepuasan Pelanggan Restoran Fast Food
Authors: Ditha Hadita 
Published: May 2019

Tujuan penelitian ini untuk mengetahui pengaruh promosi, harga terhadap kepuasan pelanggan di restoran fast food CFC cabang mall Kalibata. Penelitian ini dilakukan melalui survei dengan eksplanasi secara deskriptif. Metode analisis yang digunakan dalam penelitian ini adalah metode kuantitatif. Metode pengolahan data yang digunakan penelitian adalah uji validitas, uji reabilitas, uji normalitas, uji heterokedasititas, dan uji multikolinieritas. Sampel yang digunakan dalam penelitian ini sebanyak 150 responden. Hasil penelitian ini menunjukan bahwa promosi berpengaruh secara parsial terhadap kepuasan pelanggan di restoran fast food, terbukti dalam penelitian ini bahwa t hitung 8,573 lebih besar dari t tabel 0.1603. Harga berpengaruh negatif secara signifikan terhadap kepuasan pelanggan di restoran fast food. Terbukti bahwa t hitung 3.327 lebih besar dari t tabel 0.1603. Promosi dan harga berpengaruh secara simultan terhadap kepuasan pelanggan di restoran fast food, maka berdasarkan hasil penelitian ini, dapat di simpulkan bahwa f hitung 63,737 lebih besar dari f tabel 3,115. Berdasarkan hasil penelitian tersebut maka perusahaan perlu melakukan inovasi yang berkelanjutan terutama dalam hal ini meningkatkan promosi dan harga yang lebih baik lagi sehingga dapat meningkatkan kepuasan pelanggan di restoran fast food CFC cabang mall kalibata.The Effect Of Promotions And Prices On Customer Satisfaction In Fast Food RestaurantAbstractThe purpose of this study was to determine the effect of promotion, prices on customer satisfaction at the fast food CFC restaurant, Kalibata mall branch. This research was conducted through a survey with descriptive explanation. The analytical method used in this study is a quantitative method. Data processing methods used in this research are validity test, reliability test, normality test, heterocyticity test, and multicollinearity test. The sample used in this study were 150 respondents. The results of this study indicate that promotion has a partial effect on customer satisfaction at fast food restaurants, as evidenced in this study that t count of 8.573 is greater than t table 0.1603. Price has a significant negative effect on customer satisfaction at fast food restaurants. It is proven that t count 3.327 is greater than t table 0.1603. Promotions and prices have a simultaneous effect on customer satisfaction at fast food restaurants, so based on the results of this study, it can be concluded that f count 63,737 is greater than f table 3.115. Based on the results of these studies, the company needs to carry out continuous innovation, especially in this case increasing promotion and better prices so that it can increase customer satisfaction at the fast food CFC restaurant, mall kalibata branch.
Workflow Interdependence Analysis of Projects in Business Ecosystems
Authors: Anastasia Tsvetkova  , Kent Eriksson  , Raymond E. Levitt  , Kim Wikstrom  
Published: May 2019

This article contributes to engineering project research by studying how projects relate to their surrounding context. The article presents a framework for the analysis of workflow interdependencies in a project that is situated in a business ecosystem. The analysis is used to reduce costly conflicts in the business ecosystem, and the framework shows how the project is positively impacted by the resolution of those conflicts. The framework elaborates James Thompson’s notion of pooled, sequential and reciprocal interdependence and distinguishes between compatible-reciprocal and contentious-reciprocal interdependencies. The relationship between interdependence types and their corresponding coordination and governance mechanisms, originally posited for interdependence between tasks and groups within a single organization, applies equally well to interdependence types and governance mechanisms across firm boundaries within a business ecosystem. We analyze a cargo vessel development project within the short sea logistics business ecosystem to illustrate how the proposed framework can remove unproductive workflow conflicts and enhance value creation.