bluuebunny/crossref_metadata_2025_split huggingface dataset:
Chiral separation of beta-blockers by high-performance liquid chromatography and determination of bisoprolol enantiomers in surface waters
Authors: Pocrnić Marijana , Ansorge Martin , Dovhunová Magda , Habinovec Iva , Tesařová Eva , Galić Nives 
Published: April 2020

Abstract
Beta-blockers are chiral compounds with enantiomers that have different bioactivity, which means that while one is active, the other can be inactive or even harmful. Due to their high consumption and incomplete degradation in waste water, they may reach surface waters and affect aquatic organisms. To address this issue we developed a chromatographic method suitable for determining beta-blocker enantiomers in surface waters. It was tested on five beta-blockers (acebutolol, atenolol, bisoprolol, labetalol and metoprolol) and validated on bisoprolol enantiomers. Good enantioseparation of all analysed beta-blockers was achieved on the Chirobiotic V column with the mobile phase composed of methanol/acetic acid/triethylamine (100/0.20/0.15 v/v/v) at a flow rate of 0.5 mL/min and column temperature of 45 °C. Method proved to be linear in the concentration range from 0.075 µg/mL to 5 µg/mL, and showed good recovery. The limits of bisoprolol enantiomer detection were 0.025 µg/mL and 0.026 µg/mL and of quantification 0.075 µg/mL and 0.075 µg/mL. Despite its limitations, it seems to be a promising method for bisoprolol enantiomer analysis in surface water samples. Further research could focus on waste water analysis, where enantiomer concentrations may be high. Furthermore, transferring the method to a more sensitive one such as liquid chromatography coupled with tandem mass spectrometry and using ammonium acetate as the mobile phase additive instead of acetic acid and triethylamine would perhaps yield much lower limits of detection and quantification.
Factors Influencing the Cooperative Relationship between Enterprises in the Supply Chain of China’s Marine Engineering Equipment Manufacturing Industry-An study based on GRNN-DEMATEL method
Authors: Li Tuochen , Qiao Lin , Ding Yingying 
Published: April 2020

Abstract
Based on the data of China’s Marine engineering equipment industry, in this Paper, the key influencing factors are identified by using Grounded theory and GRNN-DEMATEL method. The study results show the key influencing factors include enterprise’s operational, technical capabilities, enterprise’s social recognition, enterprise’s willingness to cooperate, trust between enterprises, communication and collaboration, opportunism and external environment. Second, enterprise’s operational and technical capabilities are the most important and critical factors, external environment is an irresistible factor. This study enriches and develops the study of supply chain management, and provides theoretical guidance and reference for improving the industry competitiveness.
Fractional Interaction of Financial Agents in a Stock Market Network
Authors: Balcı Mehmet Ali 
Published: April 2020

Abstract
In this study, we present a model which represents the interaction of financial companies in their network. Since the long time series have a global memory effect, we present our model in the terms of fractional integro-differential equations. This model characterize the behavior of the complex network where vertices are the financial companies operating in XU100 and edges are formed by distance based on Pearson correlation coefficient. This behavior can be seen as the financial interactions of the agents. Hence, we first cluster the complex network in the terms of high modularity of the edges. Then, we give a system of fractional integro-differential equation model with two parameters. First parameter defines the strength of the connection of agents to their cluster. Hence, to estimate this parameter we use vibrational potential of each agent in their cluster. The second parameter in our model defines how much agents in a cluster affect each other. Therefore, we use the disparity measure of PMFGs of each cluster to estimate second parameter. To solve model numerically we use an efficient algorithmic decomposition method and concluded that those solutions are consistent with real world data. The model and the solutions we present with fractional derivative show that the real data of Borsa Istanbul Stock Exchange Market always seek for an equilibrium state.
Discrete Normal Vector Field Approximation via Time Scale Calculus
Authors: Akgandüller Ömer , Atmaca Sibel Paşalı 
Published: April 2020

Abstract
The theory of time scales calculus have long been a subject to many researchers from different disciplines. Beside the unification and the extension aspects of the theory, it emerge as a powerful tool for mimetic discretization process. In this study, we present a framework to find normal vector fields of discrete point sets in ℝ3 by using symmetric differential on time scales. A surface parameterized by the tensor product of two time scales can be analogously expressed as the vertex set of non-regular rectangular grids. If the time scales are dense, then the discrete grid structure vanishes. If the time scales are isolated, then the further geometric analysis can be executed by using symmetric dynamic differential. Moreover, we present an algorithmic procedure to determine the symmetric dynamic differential structure on the neighborhood of points in surfaces. Our results indicate that the method we present has good approximation to unit normal vector fields of parameterized surfaces rather than the Delaunay triangulation for some points.
Perception of Food Security at Household Level by Students of the University of Warmia and Mazury in Olsztyn
Authors: Marks-Bielska Renata , Zenkova Inga , Parzonka Aneta , Opalach Damian 
Published: April 2020

SummarySubject and purpose of work:The aim of this paper was to identify how students of the University of Warmia and Mazury in Olsztyn perceived food security at household level. It was verified whether selected students were able to define properly the terms connected with the topic and how food safety was assessed.Materials and methods:The survey was performed using a questionnaire as the research tool. The survey was conducted at three faculties in the following courses of studies: economics, law, and bioengineering of food production. Statistical data were included.Results:Most of the respondents considered food security at household level in Poland to be at a satisfying level. In most respondent’s households, expenditure on food in relation to income was at a higher level than the national average.Conclusions:Food security in the households of the surveyed students was ensured. The economic availability of food in the analysed households was good, as most respondents were able to purchase high quality food products.
The Development of Human Capital on the Labor Market of the Wielkopolskie Voivodeship
Authors: Kozak Sylwester , Grzęda Łukasz 
Published: April 2020

Summary

Subject and purpose of work: This paper presents the development of human capital on the labour market of the Wielkopolskie Voivodeship in 2004-2017.

Materials and methods: The study uses methods of literature review and comparative analysis based on data provided by Statistics Poland.

Results: The results of the analysis show that constant development of human capital is taking place in the Wielkopolskie Voivodeship, and its level measured by the number of students and graduates of universities, as well as the number of registered patents is comparable to the average in Poland. The high quality of human capital contributed to achieving above-average economic results and household incomes.

Conclusions: Development of human capital and raising professional qualifications at post-graduate studies was particularly important in the period of negative impact on the Polish economy of the financial crises of 2007-2009 and 2010-2012. A combination of higher education and innovative abilities, as well as involvement in R&D contributed to the increased competitiveness of the voivodeship’s economy.
Human Capital Evaluation and Capitalisation Specific to Rural Areas of Ukraine
Authors: Borodina Olena , Rykovska Oksana 
Published: April 2020

Summary

Subject and purpose of work: Human capital is one of the key drivers of rural economic development. The purpose of this paper was to study the main assets of human capital in rural areas and to evaluate this human capital; to identify development trends and devise the recommendations for increasing the impact of human capital in Ukraine’s rural areas on individual incomes and economic growth.

Materials and methods: The research focuses on evaluating the key assets of human capital in the rural areas of Ukraine – educations, health, qualifications, age and the integral evaluation of rural human capital. The data was gathered by random surveys of household living conditions conducted by the State Statistics Committee of Ukraine. Annual surveys cover 10,500 households.

Results: Results demonstrate that there were positive dynamics under the education component, while the health component was constantly in decline. The quantitative scoring of assets allowed preparing an integrated evaluation of human capital in rural areas of Ukraine and observing the dynamics of change in years. This indicator had declined before 2008. A decrease in the level of rural human capital in Ukraine started with the activation of large-scale agri-business in the late 1990s. Since 2009, human capital in rural areas has been increasing. The dynamics of human capital development in the rural areas of post- Euromaidan Ukraine demonstrate the specific nature of its capitalisation. Profit per human capital in rural areas depends not on its rate but on the human capital (holder) employment profile.

Conclusions: Received evaluations could be used for separation of priority state policy actions for balanced development, quantitative renovation and accumulation of human capital in rural areas.
The Operational Efficiency of Public Higher Vocational Schools in the Lubelskie Voivodeship
Authors: Pyra Mariusz 
Published: April 2020

SummarySubject and purpose of work:This paper aims to assess the operational efficiency of public higher vocational schools in the Lublin Region.Materials and methods:The assessment was based on the non-parametric method of data envelopment analysis (DEA) using the standard CCR-O model.Results:In most of the analysed models (E, N, O series), the public higher vocational schools in the Lublin Region were found to have improved their efficiency in 2019 relative to 2017.Conclusions:E-series models are very susceptible to changes, both in terms of inputs and effects. This gives the possibility of a significant impact on the increase in the assessment of the effectiveness of investigated units DMUs. N-series models demonstrate the importance of aggregation and quality of source data for the results of performance assessment. Class O models justify the need to look for and compare the use of other DEA model variants in the study of the effectiveness of public higher vocational schools.
Green Tourism as a Factor of Development of United Territorial Communities in Ukraine
Authors: Korkuna Oryslava , Korkuna Ivan , Kulyk Oksana 
Published: April 2020

Summary

Subject and purpose of work: Today, each united territorial community (UTC) has tourist potential, but not all can recognise, evaluate and use it. This paper deals with presenting contemporary issues and identifying prospects for green tourism development in united territorial communities.

Materials and methods: This paper includes general scientific and special methods of research, in particular, analysis and synthesis, systematisation and generalization, and the dialectical approach. A dialectical method of cognition is used to specify the features of rural green tourism organisation in the EU Member States.

Results: The internal potential and opportunities for its involvement in the development of green tourism in the UTC were determined. The foreign experience is analysed and the perspectives of use of their practice in the development of green tourism are considered. The complex of tasks of the UTC to ensure the development of rural green tourism in the UTC of Ukraine is highlighted. It is established that green tourism can be an additional factor in filling the revenue part of the UTC’s budget and a factor in strengthening its capacity. A SWOT analysis of the development of green tourism in the UTCs of Ukraine was out. The main directions of development of green tourism were highlighted.

Conclusions: It was determined that green tourism could act as a catalyst for economic restructuring, provide demographic stability and solve the socio-economic problems arising nowadays during the formation and development of UTCs in Ukraine.
Efektivitas Perangkat Pembelajaran Berbasis Flipped Classroom untuk Meningkatkan Kemampuan Penalaran Matematis Peserta Didik
Authors: Fedistia Ridia , Musdi Edwin 
Published: April 2020

This study was aiming at determining the impact of mathematics learning instruments based on flipped classroom in improving students' mathematical reasoning abilities. This is development research adapting the Plomp development model. This research was conducted in three stages: preliminary research, prototyping phase, and assessment phase. The subjects of this study were students one of the senior high schools in Padang, Indonesia. The instrument used was a test of mathematical reasoning ability. Data were analyzed by quantitative methods. The results showed the number of students achieving the minimum criteria of mastering learning concerning mathematical reasoning ability, increasing from 47.22% to 75%. The mathematical reasoning ability of students in groups increased from the first to the fifth meeting, and the level of implementation of learning by the teacher was in a good category. This means that the learning tools based on Flipped Classroom were effective in improving students' mathematical reasoning abilities.
Pengaruh Model Pembelajaran Learning Cycle 5E terhadap Kemampuan Pemecahan Masalah Matematika Ditinjau dari Adversity Quotient Siswa
Authors: Ma'arif Abdul , Syaiful Syaiful , Hasibuan Muhammad Haris Effendi 
Published: April 2020

Problem-solving skill is required by students and a target in studying mathematics. However, the problem-solving skill of Indonesian students are lacking. One effort that can be done is applying the Model of Learning Cycle 5E. This research discussed the influence of the implementation of the learning cycle model on mathematics problem-solving skill viewed from students’ adversity quotient. This research used a quantitive approach, quasi-experimental study. The subjects were the 8th Grade students of SMP IT Ash-Shiddiiqi Jambi, consisting of two experiment classes and one control class. The instruments were post-test and adversity quotient questionnaire modified by Stoltz and had been validated by experts. Data analysis was conducted by Two-Way ANOVA. The results showed that there was no interaction between the learning cycle 5E model and mathematics problem-solving skill. This finding indicates that the model of learning cycle 5E affects problem-solving skills and can be applied to students with all types of adversity quotient.
Respon Pertumbuhan dan Pembungaan Bunga Lisptik ‘Soedjana Kasan’ terhadap Aplikasi GA3, Etefon, dan Paklobutrazol
Authors: Wardani Fitri Fatma , Damayanti Frisca , Rahayu Sri 
Published: April 2020

Aeschynanthus ‘Soedjana Kasan’ atau bunga lipstik ‘Soeka’ adalah varietas baru hasil persilangan antara dua spesies bunga lipstik yaitu Aeschynanthus radicans Jack. dan Aeschynanthus tricolor Hook. Tanaman ini memiliki kelemahan yaitu berbunga setahun sekali dan bunganya cepat rontok. Tujuan dari penelitian ini adalah mengetahui pengaruh berbagai konsentrasi giberelin (GA3), etefon, dan paklobutrazol terhadap pertumbuhan dan pembungaan bunga lipstik ‘Soeka’. Rancangan percobaan yang digunakan adalah rancangan acak lengkap dengan sembilan perlakuan, yaitu GA3 50 ppm, GA3 100 ppm, GA3 150 ppm, etefon 50 ppm, etefon 100 ppm, paklobutrazol 50 ppm, paklobutrazol 100 ppm, dan paklobutrazol 150 ppm yang diaplikasikan pada tanaman berumur 4 minggu serta tanpa perlakuan ZPT sebagai kontrol. Setiap perlakuan diulang 5 kali sehingga terdapat 45 satuan percobaan. Masing-masing satuan percobaan terdiri dari satu pot berisi lima stek tanaman. Hasil menunjukkan bahwa pertambahan jumlah cabang terbanyak didapatkan pada tanaman dengan aplikasi GA3 150 ppm, sedangkan untuk pertambahan jumlah daun dan panjang cabang, aplikasi ZPT tidak berpengaruh nyata. Ruas batang bunga lipstik memendek dengan aplikasi etefon dan memanjang dengan aplikasi GA3 dan paklobutrazol. Waktu inisiasi tercepat adalah aplikasi etefon 50 dan 100 ppm yaitu 1 sampai 2 minggu setelah aplikasi. Aplikasi paklobutrazol 100 ppm menghasilkan jumlah bunga terbanyak dan bunga yang dihasilkan dapat bertahan hingga menjadi buah.
Kata kunci: Aeschynanthus, pembungaan, pertumbuhan, tanaman hias, zat pengatur tumbuh
Pengaruh Pemberian Mulsa dan Irigasi pada Pertumbuhan dan Hasil Bawang Merah (Allium cepa L. var. agregatum)
Authors: Zuliati Septiarini , Eko Sulistyono  , Heni Purnamawati  
Published: April 2020

Ketersediaan air untuk tanaman dapat dipertahankan dengan pemberian irigasi dan penggunaan mulsa. Penelitian ini dilakukan untuk mendapatkan volume irigasi pada berbagai jenis mulsa yang efisien untuk tanaman bawang merah varietas Bima Brebes. Rancangan penelitian tersusun secara acak kelompok dengan dua faktor dan tiga ulangan. Faktor pertama adalah tingkat volume irigasi berdasarkan evaporasi panci (Eo) yang terdiri dari 6 taraf yaitu 0.25 Eo, 0.50 Eo, 0.75 Eo, 1.00 Eo, 1.25 Eo, dan 1.50 Eo. Faktor kedua adalah jenis mulsa yang terdiri dari 3 taraf yaitu tanpa mulsa, mulsa plastik hitam perak, dan mulsa jerami. Interaksi antara volume irigasi dan jenis mulsa meningkatkan pertumbuhan tinggi tanaman, jumlah daun, jumlah anakan, volume akar, jumlah akar, bobot kering, diameter umbi, dan bobot basah umbi per rumpun. Kombinasi volume irigasi 1.50 Eo dengan mulsa plastik menghasilkan bobot basah umbi tertinggi dan tidak berbeda nyata dengan volume irigasi 0.50 Eo dan 0.75 Eo pada mulsa plastik serta volume irigasi 1.00 Eo dan 1.50 Eo tanpa pemberian mulsa. Kombinasi volume irigasi 0.50 Eo dengan pemakaian mulsa plastik direkomendasikan untuk alasan efisiensi pemakaian air dan penggunaan air yang lebih sedikit.
Kata kunci: diameter umbi, evaporasi, mulsa plastik plastik hitam perak, mulsa jerami
Penentuan Dosis N, P, dan K Optimum untuk Padi Gogo Kultivar Mayas Lokal Kalimantan
Authors: Arrasyid Bagus , Iskandar Lubis  , Suwarto  , Heni Purnamawati  
Published: April 2020

ABSTRAK
Pemupukan berimbang adalah metode yang efektif untuk meningkatkan produksi padi dan menjaga keberlanjutan lingkungan. Tujuan penelitian ini adalah untuk menentukan dosis optimum pupuk N, P, K untuk padi gogo kultivar Mayas. Penelitian dilaksanakan pada bulan Januari sampai dengan Juli 2019 di lahan Kebun Percobaan Leuwikopo, IPB University, Bogor. Percobaan terdiri atas tiga percobaan paralel untuk N, P dan K dengan tingkat dosis pupuk berbeda menggunakan rancangan kelompok lengkap teracak sebanyak tiga ulangan. Dosis pupuk yang digunakan yaitu 0, 50, 100, 150, dan 200% dari acuan (100% N = 150 kg Urea ha-1, 100% P = 100 kg SP36 ha-1, 100% K = 100 kg KCl ha-1). Hasil dari peubah yang diamati dikonversi menjadi hasil relatif dan persamaan kuadrat dibuat untuk menentukan dosis pupuk N, P dan K optimum padi gogo Mayas, yaitu 174.79% N, 90.76% P2O5, dan 77.14% K2O dari acuan yang setara dengan 120.60 kg N, 32.67 kg P2O5, dan 46.28 kg K2O ha-1 atau 261.18 kg urea, 90.76 kg SP36, dan 77.14 kg KCl ha-1.
Kata kunci: hasil relatif, multi nutrient response, dosis rekomendasi
The Effect of Cultural Values on Business Strategy Choices
Authors: Valencia. S. Permata Antonius. S. Setiawan, Johan. G. Ony, 
Published: April 2020

The strategy is important in the effort to achieve firm performance. The decision of an entrepreneur in determining the choice of strategy is often influenced by certain factors. Ethnic cultural values embraced by an entrepreneur will often be an important issue that will have an impact on the choice of their business strategy. Therefore, this study aims to examine the effect of cultural values on business strategy choices. The study was conducted using quantitative methods using primary data through a survey on micro, small and medium business entrepreneurs in Palembang city. A total of 150 questionnaires were distributed to entrepreneurs. The number of questionnaires used in this study was 107 (71%). Structural Equation Modeling (SEM) Partial Least Squares (PLS) analysis using Warp PLS version 5.0 software is used to test the hypothesis. The results of the study indicate that the cultural values embraced by entrepreneurs influence the choice of business strategies that they implement.
Toksoplasmosis Okular
Authors: Ariyeni Dessy , Helvinda Weni 
Published: April 2020

Toksoplasmosis merupakan penyakit yang disebabkan oleh Toksoplasma gondii yang merupakan protozoa obligat intraselular. Parasit ini mempunyai tiga bentuk morfologi yang berbeda, yaitu: tachizoites, bradizoites dan ookista. Transmisi parasit ke manusia dapat terjadi dengan cara termakan makanan yang mengandung ookista atau kista jaringan yang terdapat di dalam daging yang dimasak tidak sempurna. Dilaporkan kasus dengan diagnosis toksoplasmosis okular pada lima pasien yang datang ke RSUP Dr. M. Djamil Padang antara Februari sampai Mei 2015. Lima pasien datang dengan keluhan penglihatan kabur dengan onset yang berbeda-beda. Pada pemeriksaan oftalmologi didapatkan penurunan visus unilateral dan terdapatnya lesi di polus posterior dengan pinggir hiperpigmentasi pada pemeriksaan funduskopi. Semua pasien diberikan terapi trimethoprim/sulfamethoxazole selama 6 minggu. Perbaikan visus pada pasien toksoplasmosis okular terjadi setelah pemberian terapi selama 6 minggu dengan terapi trimethoprim/sulfamethoxazole walaupun tidak terlalu signifikan karena ada lesi didaerah makula.Kata kunci: lesi hiperpigmentasi, toksoplasmosis okular, trimethoprim / sulfamethoxazole
Faktor-Faktor yang Mempengaruhi Kepatuhan Peserta Mandiri Dalam Pembayaran Iuran Program Jaminan Kesehatan Nasional di Kota Solok
Authors: Wulandari Ayu , Syah Nur Afrainin , Ernawati Tuty 
Published: April 2020

Kepatuhan peserta mandiri membayar iuran Jaminan Kesehatan Nasional (JKN) di Kota Solok belum maksimal. Hal ini terlihat dari jumlah peserta mandiri yang menunggak di Kota Solok yaitu 69% dari peserta mandiri terdaftar. Tujuan: Mengidentifikasi faktor-faktor yang mempengaruhi kepatuhan peserta mandiri dalam pembayaran iuran Program JKN di Kota Solok. Metode: Penelitian ini menggunakan rancangan cross sectional, dengan sampel penelitian adalah peserta mandiri program JKN di Kota Solok yang terpilih secara acak. Analisis data dilakukan dengan uji Chi-square. Responden dalam penelitian ini adalah 105 orang peserta mandiri yang minimal berusia 17 tahun dan berdomisili di Kota Solok. Hasil: Uji statistik menunjukkan terdapat hubungan yang signifikan antara tingkat pengetahuan (p=0,019), pendapatan (p=0,038), persepsi terhadap pelayanan kesehatan (p=0,047) dan persepsi terhadap risiko (p=0,043) dengan kepatuhan pembayaran iuran peserta mandiri program JKN BPJS Kesehatan di Kota Solok. Simpulan: Tidak terdapat hubungan signifikan antara tingkat pendidikan, jarak tempuh tempat pembayaran iuran dan jumlah tanggungan terhadap kepatuhan pembayaran iuran peserta mandiri program JKN BPJS Kesehatan di Kota Solok. BPJS Kesehatan Cabang Solok harus meningkatkan kuantitas dan kualitas sosialisasi untuk meningkatkan pengetahuan peserta tentang hak dan kewajiban peserta mandiri program JKN.Kata kunci: kepatuhan, Iuran JKN, BPJS Kesehatan