bluuebunny/crossref_metadata_2025 huggingface dataset:
Η επίδραση του branding στη συμπεριφορά των Ελλήνων καταναλωτών στο ελαιόλαδο
Authors: Μπαζιάνα Σωτηρία
Published: April 2021

Το ελαιόλαδο αποτελεί για την Ελλάδα ένα παραδοσιακό αγροτικό προϊόν και κατέχει αξιόλογη θέση στον κλάδο τροφίμων, καθώς και σπουδαία σημασία για την οικονομική και κοινωνική ζωή της χώρας. Ωστόσο, παρότι η Ελλάδα παράγει ελαιόλαδο εξαιρετικής ποιότητας, η ανταγωνιστικότητα του κλάδου παρεμποδίζεται από την υψηλή γεωγραφική διασπορά των παραγωγικών μονάδων, τη λιγότερο προηγμένη τεχνολογία που χρησιμοποιείται στο στάδιο της επεξεργασίας και το μικρό μερίδιο αγοράς των επώνυμων (branded) προϊόντων. Ως εκ τούτου, το branding στην αγορά ελαιόλαδου αναδεικνύεται ως βασικός παράγοντας ενίσχυσης της ανταγωνιστικότητας του κλάδου. Σκοπός της παρούσας διατριβής είναι η διερεύνηση της επίδρασης του branding, δηλαδή της στρατηγικής διαμόρφωσης των στοιχείων του brand, στη συμπεριφορά των καταναλωτών απέναντι στα προϊόντα ελαιόλαδου. Στην έρευνα συμμετείχαν 488 καταναλωτές στη Θεσσαλονίκη, οι οποίοι κλήθηκαν να καταθέσουν τις στάσεις, απόψεις και αντιλήψεις τους σε ερωτηματολόγιο 54 ερωτήσεων. Σύμφωνα με τα ερευνητικά αποτελέσματα, αρχικά, διαπιστώθηκε ότι οι καταναλωτές επιλέγουν επώνυμα προϊόντα ελαιόλαδου βάσει της σχέσης ποιότητας-τιμής, αποδίδοντας μικρότερη έμφαση στη φήμη του brand, ενώ συνηθίζουν να προμηθεύονται ελαιόλαδο είτε από τοπικούς παραγωγούς ή από τα super-markets. Δεύτερον, βρέθηκε ότι οι επιλογές του brand ελαιόλαδου βασίζονται στις διασυνδέσεις του brand, την αντιληπτή ποιότητα και την πελατειακή πιστότητα. Τρίτον, τεκμηριώθηκε ότι η προτίμηση σε ένα brand ελαιόλαδου συσχετίζεται με αυξημένη αναγνωρισιμότητα του εμπορικού σήματος, βελτιωμένες αντιλήψεις περί ποιότητας και υψηλότερα επίπεδα πιστότητας. Τέλος, βρέθηκε ότι υψηλότερη κατανάλωση ελαιόλαδου συσχετίζεται με μεγαλύτερο βαθμό αναγνωρισιμότητας του brand και ισχυρότερες αντιλήψεις για την ποιοτική υπεροχή του έναντι άλλων προϊόντων λαδιού. Βάσει των ευρημάτων της μελέτης, επιβεβαιώνεται η περιορισμένη διαφοροποίηση των brands ελαιόλαδου στην ελληνική αγορά και συμπεραίνεται ότι στην ενίσχυση της ανταγωνιστικότητας του κλάδου τόσο εγχώρια όσο και διεθνώς μπορεί να συμβάλλει η υιοθέτηση ολοκληρωμένων στρατηγικών branding που στοχεύουν στη διαφοροποίηση των ελληνικών προϊόντων από τον ανταγωνισμό, στην προβολή των ποιοτικών τους χαρακτηριστικών και στην προσέλκυση μακροχρόνια πιστών πελατών.
How to visualise the unvisible – new video-based eyetracking paradigm "PILK!" for children aged 3 to 4
Authors: Saareoja Helen , Kaldoja Mari-Liis
Published: April 2021

Sotsiaalselt pädev laps märkab ja tõlgendab eri suhtlusstiimuleid ning suudab nende järgi arvestada oma suhtluspartneriga ja valida sobivad suhtluseesmärgid. Raskused stiimulite märkamisel ja tõlgendamisel võib olla aga üks põhjustest, miks laps käitub mõnes suhtlussituatsioonis ebasobivalt. Sotsiaalset pädevust hindavad hindamisvahendid üldiselt kinnitavad probleemi sotsiaalsetes suhtlusolukordades toimetulemisel, kuid ei anna teavet selle kohta, mis on nimetatud  raskuste põhjus, ega ka selle kohta, kuhu suunata teraapia fookus. Selle tühimiku täitmiseks koostati 2017–2018. aastal 12 originaalvideost koosnev sotsiaalse taju hindamise vahend "PILK!", millega saab hinnata, kuidas laps sõltuvalt  kontekstist fikseerib pilgu olulistele mitteverbaalsetele suhtlussignaalidele (pilgu suund, žestid, emotsioonid, vooruvahetus). Siinne esmauuring näitas, et koostatud hindamisvahendi videotes määratud huvipiirkonnad on suuresti sobilikud hindamaks, kuidas 3–4aastased lapsed pööravad tähelepanu sotsiaalselt olulistele stiimulitele. Uuringu tulemustest selgus, et parema probleemilahenduse oskustega lapsed fikseerisid enam pilku sotsiaalselt olulistele stiimulitele. Pilgu fikseerimise muster sõltus video kontekstist – enam tähelepanu sai inimese nägu, emotsiooni ja reaktsiooni väljendav nägu, tegevus ja sellega kaasnev objekt ning sümboolsed žestid.

 Summary
The Pre-clinical Test’s Results of the Efficiency of the Radiopharmaceutical Preperation "DTPA-Microspheres of Albumin, 90Y"
Authors: Vlasova O , Stepchenkova E , Petriev V , Klement'eva O. , Stepchenkov D , Krasnoperova A , Kuznetsov Aleksey , Nerozin N , Ivanov S , Kaprin A.
Published: April 2021

Purpose: Development of technology for producing a radiopharmaceutical based on 90Y labeled modified human blood albumin microspheres, and the study of the functional suitability of this drug in experimental animals.

Material and methods: The research team studied the following characteristics of the drug: the distribution and excretion of the drug after its intra-arterial administration; the mechanism of action of the drug in animals with model pathology; therapeutic efficacy of the drug in animals with a liver tumor model.

The following physicochemical characteristics of the developed radiopharmaceutical were announced: modified with DTPA and labeled 90Y human blood albumin microspheres, particle size 25-40 microns, radiochemical impurities less than 5.0%, 90Sr radionuclide impurities less than 0.002%, the amount of chemical impurities (Na, Al, Ca, Fe, Cu, Zn, Cd, Pb) not more than 10 μg / GBq, volumetric activity up to 150 mCi / ml at the date of preparation.

Sprague Dawley female rats were taken as experimental animals (body weight 220-260 g). Studies were conducted on a model pathology - hepatocellular carcinoma, which occurs in 85% of all malignant tumors of the human liver.

Results: in 2018-2019, nine pilot batches of the radiopharmaceutical product satisfying the declared characteristics were developed. Stable inhibition of the growth of tumor lesions by 7.62% was noted. The quality of life in animals with orthotopic tumor foci of hepatocarcinoma treated was better than in animals not treated. Life expectancy in the group of animals treated with the drug was higher than in the group of animals that did not receive treatment by 7.1%. The distribution of the drug was characterized by pulmonary bypass, not exceeding 9% of the injected activity and minimal forwarding into the circulating blood. The radiopharmaceutical was firmly held at the injection site and remained almost unchanged throughout the study. Binding to the tumor site of the drug was characterized by retention of at least 78% of the introduced activity.

Conclusion: Conducted preclinical studies of the pharmacokinetics of the drug show its potential suitability for the treatment of liver cancer by radionuclide embolization. According to the results of preclinical studies of the therapeutic effectiveness of the radiopharmaceutical, it should be considered effective for use.
Decontamination of Contaminated Areas, Environmental Objects and Infrastructure of Settlements in Radiation Accidents
Authors: Galushkin B. , Bogdanova L. , Molokanov A.
Published: April 2021

Purpose: To consider the issues of physical-mechanical decontamination of contaminated territories, environmental objects and infrastructure of settlements during a radiation accident and to develop a mathematical tool for evaluating forces and means during physical-mechanical decontamination. Materials and methods: Analyzed possible contamination of territories and facilities with radioactive materials during the accident at the Chernobyl nuclear power plant (NPP) and the Japanese Fukushima Daiichi NPP, the methods used for decontamination and technical means, and the effectiveness of their use. The experience in dealing with the consequences of large scale radiation accidents at NPP, including the Chernobyl and Fukushima Daiichi NPPs, shows that the decontamination of contaminated territories and settlements is a very time-consuming and costly undertaking, which is carried out to resume economic activity on large contaminated areas. To carry out such work, it is required to evaluate the needful amount of various sets of technical equipment involved, as well as the involvement of numerous organizations with their specialists and personnel. Results: The issues of physical-mechanical decontamination of roads and sections of the terrain, forest land, soil, buildings and structures and technical equipment are considered. The mathematical tool for evaluation the forces and means involved in decontamination measures is given. The developed methodological approaches can be used to assess the necessary forces and means, responding to emergency incidents of a different nature: in responding spills of oil and its products, disinfection of various objects and in other emergency situations. Conclusion: The developed calculation tool allows evaluate the forces and means necessary for decontamination in a contaminated area.
ANALISIS STRATEGI BAURAN PEMASARAN (MARKETING MIX) TERHADAP KEPUTUSAN PEMBELIAN KONSUMEN DI DISTRIBUTION OUTLET MAILBOX, YOGYAKARTA
Authors: Arfiyandi Aunul Khaq Syaifti , Adhilla Fitroh
Published: April 2021

This study aims to determine whether there is influence simultaneously and partial factor product, price, promotion and location of the purchasing decisions of consumers in the Distribution Outlet Mailbox in Yogyakarta and the factor of whether the greatest effect on consumer purchase decisions. The analysis used in this study is the analysis of t test (partial), f test analysis (simultaneously) and test the coefficient of multiple determination (R2). Samples taken in this study of 100 respondents who considered sufficiently representative of the population studied. Sampling technique using the incidental sampling (sampling with respondents met by chance at the time of the study). While data collecting technique using a questionnaire that is a list of questions given to a number of respondents to obtain data required in the research.Based on the results of t test analysis (partially) by Level of Significant (05) that there is influence of the partial product variable (X1) of (0,024), Price (X2) equal to (0.325), Promotion (X3) (0,000), and Location (X4) of (0.028) of the Consumer Buying Decision (Y). And based on results of test analysis f (simultaneously) is (0.000) with Level of Significant (05) and stated there is the influence of variables simultaneously Products (X1), Promotion (X3), and Location (X4) of the Consumer Buying Decision (Y) and variable rates (X2) has no effect signifika partially towards Consumer Purchase Decision (Y). The most dominant factor of influence on consumer purchasing decisions based on the data if the beta coefficient of the variable product (X1) of (0.222), Price (X2) equal to (0,110), Promotion (X3) (0.449), and Location (X4) for (0.201), factors that contribute the greatest value is a factor Promotions (X3), amounted to (0.449). The results obtained from the regression R 2 (coefficient of determination or R Square) of 0.623 means that the dependent variable (Y) in the model: Consumer Buying Decision (Y) explained by independent variables (X), namely Products (X1), Price (X2), Campaign (X3), and Location (X4) of 62.3%, while the remaining amount of 37.7% explained by other variables outside the model.
PERSEPSI KONSUMEN DI KALANGAN MAHASISWA DAN MASYARAKAT UMUM TERHADAP PONSEL PINTAR MEREK BLACKBERRY DI YOGYAKARTA
Authors: Adabi Azhar , Setyono Hendro
Published: April 2021

This study titled consumer perceptions among students and the general public against the Blackberry smart phone brand in the Jogjakarta. This study aims to determine whether there are difference among students in the consumer and the general public on smart phones. The research was conducted in Yogyakarta in  particular by using a questionnaire, each of 50 respondents who were sampled. By using the technique of sampling, snowball sampling. Analysis of test data used in the arithmetic mean statistic. From the survey results revealed that consumer perceptions of brand smart phone blackberry is positive, where the perception among students is better than the consumer’s perception among the general public. From the analysis of hypothesis testing concluded that the probability of > significance () means there is no difference among students in the consumer and the general public on blackberry smart phone brand. The price of smart phone based on the attribute probability value 0.540. While the quality attributes of a smart phone probability value of 0.149. And attribute value of the probability models of smart phones 0.638
PENGARUH KUALITAS PRODUK TERHADAP KEPUASAN KONSUMEN DAN KESETIAAN MEREK PADA PRODUK TOLAK ANGIN CAIR SIDOMUNCUL
Authors: Darnawati Dhewi Andria , Sutanto Aftoni
Published: April 2021

This study aims to determine how the effect of product quality to customer satisfaction and customer loyalty on the product Tolak Angin Cair Sidomuncul and to find out what is the most dominant variable affecting consumer satisfaction and brand loyalty to the product of Tolak Angin Cair Sidomuncul. The population in this study is that people in the District of Umbulharjo, the city of Yogyakarta. Sampling techniques used is incidental sampling. Sources of data from this study using primary data obtained from the deployment questionnaire. This study used data analysis techniques are qualitative and quantitative analysis (multiple regression analysis, t test and F test). T test results on customer satisfaction (Y1) show that for each of the performance variables (X1), Reliability (X2), Endurance (X3), Aesthetics (X4), and perceived quality (X5) obtained the calculated value of t-count> t-table. It can be concluded that the performance variables (X1), aesthetics (X4), the perceived quality (X5), the partial effect is not significant and, while the variables Reliability (X2), Endurance (X3) and significant effect on customer satisfaction and t test results on brand loyalty disimpilkan that performance (X1), Reliability (X2), Endurance (X3), Aesthetics (X4), partial and no significant effect, whereas the perceived quality variables (X5) of consumer  loyalty to the product Tolak Angin Sidomuncul. The results of the F test, F-table obtained  = 5% F-count on the consumer satisfaction of 7.420. While the F-count on brand loyalty of 16.728. Because the F-count value. F-table, then the performance of independent variables (X1), Reliability (X2), Endurance (X3), Aesthetics (X4), and perceived quality (X5) simultaneously affect consumer satisfaction and brand loyalty to the product of Tolak Angin Cair Sidomuncul.
ANALISIS PERBEDAAN MOTIVASI DAN PRESTASI KERJA ANTARA KARYAWAN TETAP DAN KARYAWAN KONTRAK PADA PERUSAHAAN “KAMPOENG BRASCO FACTORY OUTLET” CIPANAS CIANJUR JAWA BARAT
Authors: Prabowo Arjak , Muttaqiyathun Ani
Published: April 2021

The purpose of this study was to determine the difference of the variable work motivation among permanent employees and contract employees (financial motivation and non financial motivation), and differences in job performance between among permanent employees and contract employees at the company Kampoeng Brasco Factory outlet cipanas, cianjur, west java. The population in this study were all permanent employees and contract employees Kampoeng Brasco Factory outlet cipanas, cianjur, west java respectively numbered 35 people. The sample selected for permanent employees using sampling methods saturated. And for contract employees using random sampling methods. This study used independent sample t-test. Current Research showed that motivation difference between permanent employees and contract employees. Research on work performance variables showed that performance difference between permanent employees and contract employees.
REAKSI PASAR TERHADAP PENGUMUMAN KENAIKAN DAN PENURUNAN DIVIDEN PADA INDUSTRI PERBANKAN YANG TERDAFTAR DI BURSA EFEK INDONESIA PERIODE 2008-2010
Authors: Aisah Siti Nur , Sulistiyani Tina
Published: April 2021

This study aims to determine how the market reaction to announcements of dividend increases and decreases in the Banking Companies listed on the Indonesia Stock Exchange 2008-2010 period. This study population was 31 banking companies that announced dividend increases and decreases during the period 2008-2010. Data collection technique used was purposive sampling. Of the 31 existing populations, selected 7 samples that meet the criteria penelitian. Teknik analysis of the data used is the one sample t-test. The research proves that in 2009 the abnormal return only occurs on day 5 before the announcement of devidend increase, while the other day, thus indicating no abnormal return. Research in 2010, it is known that there is no abnormal return on announcement of an increase or descrease in dividends.
ANALISIS PENGARUH MARKET CAPITALIZATION TERHADAP HARGA SAHAM PADA PERUSAHAAN YANG TERDAFTAR DI BURSA EFEK INDONESIA
Authors: Nuraningrum Amanda Wahyu , Fitriani Dyah
Published: April 2021

This study aimed at testing and analyzing how both the big market capitalization and the small one had an effect on the price stock. The population of this study was all companies listed in BEI in the period of 2007 – 2011. The purposive sampling with a quota sampling was applied in the technique as sampling, while the selection result of sampling was 36 companies with big market capitalization and 36 companies with small market capitalization. The method of data selection of this study was documentation because the data was taken from other sides. The dependent variable used in this study was price stock and the independent variable was market capitalization. The tools for data analysis applied Vector Error Correction Model (VECM). The result of this study indicated that the big market capitalization had a positive effect on the price stock and gave an effect of 69.91% on the price stock at the end of the period. While the small market capitalization had a positive effect on the price stock at 85.09%.
ANALISIS SEGMENTASI PASAR PADA GULE KEPALA IKAN BANK JO JALAN JENDERAL SUDIRMAN N0 40 BANTUL YOGYAKARTA
Authors: Apriadi Mukhlis , Adhilla Fitroh
Published: April 2021

This research used an object of Gule Kepala Ikan (Head Fish Curry) of Bank Jo as its research object. This research was aimed to know cluster shaped in Gule Kepala Ikan Bank Jo using demographic and behavioral variables. Population in this research was customers of Gule Kepala Ikan Bank Jo. Samples used numbered 150 respondents, while its sample taking usedaccidental sampling and purposive sampling techniques. Data used in this research was in form of primary data. Primary data was directly obtained from customers by distributing questionnaires fulfilled by Gule Kepala Ikan Bank Jo customers who were purchasing during this research performed. Variable used in this research was demographic and behavioral variables using a gender attribute, age, marital status, attitudes in selecting menu, income, tribes and occupation. Data collected was then processed using a direct marketing method. The data processing result of Gule Kepala Ikan Bank Jo respondents formed into two clusters with a still-waek model quality. Cluster 1 formed by 51 respondents by a cluster size of 34%, while cluster II formed by 99 respondents by a cluster size of 66%.
PENGARUH ORIENTASI PASAR PADA KUALITAS LAYANAN, KEPUASAN PELANGGAN, DAN LOYALITAS PELANGGAN SPEEDY PT TELKOM DI KOTA YOGYAKARTA
Authors: Abdillah Ihsany , Adhilla Fitroh
Published: April 2021

Market orientation is believed to be a source of competitive advantage that is difficult to imitate by competitors. This study aimed to determine the effect of market orientation on service quality, customer satisfaction, and customer loyalty Speedy PT Telkom in the city of Yogyakarta. The population in this study are all PT Telkom Speedy customers who live in city of Yogyakarta. Data analysis methods used in this study include descriptive and inferential methods, inferential method used is path analysis. The results of goodness of fit model shows that the X2 value, the value of CFI, and RMSEA values have had a good match. Based on the analysis of data shows that the determinants of customer loyalty Telkom Speedy Yogyakarta is a market orientation quality of service, and customer satisfaction.
ANALISIS PENGARUH FAKTOR INTERNAL DAN EKSTERNAL TERHADAP PENGAMBILAN SAHAM PERBANKAN BUMN YANG TERDAFTAR DI BEI PERIODE 2010-2014
Authors: Sanuri Sanuri , Kusuma Desta Rizky
Published: April 2021

This study aims to determine the influence of factors internal and external to the return of registered banking shares Indonesia Stock Exchange in 2010-2014. The population in this study were 4 BUMN bank companies registered in Indonesia Stock Exchange period 2010-2014 sampling techniques used is purposive sampling. obtained by 4 state-owned bank companies included in the independent variable criterion studied is Return On Assets (ROA), Capital Adequacy Ratio (CAR), Inflation Rate, and Rate of Interest Interest and the dependent variable studied is stock returns. Analysis Techniques used is Panel Data Regression and Hypothesis test using t-test. The results showed that both variables were simultaneously independent Return On Asset (ROA) has no effect on stock returns Partially the variables of the four independent variables are Return On Assets (ROA), Capital Adequacy Ratio (CAR), Inflation and Interest Rates are only Inflation and Interest rates that have a significant effect on stock returns. R-square value 33.42%.
PENGARUH KURS RUPIAH, TINGKAT SUKU BUNGA, DAN TINGKAT PENGANGGURAN TERHADAP HARGA SAHAM PADA PERUSAHAAN SUB SEKTOR PERTAMBANGAN MINYAK DAN GAS BUMI YANG TERCATAT DI BURSA EFEK INDONESIA PERIODE 2012-2017
Authors: Dewi Atika Puspita , Asakdiyah Salamatun
Published: April 2021

The monetary situation and the movement of macroeconomic variables are things  that  must be considered  an  investor  in  the  stock  trading activity in a country. The economic  situation  and  fluctuations  in  macro  variables  in  one country  can  affect  the  stock  price,  including  the  oil  and  gas  mining  sub-sector. This  study aimed to examine  the effect of  macroeconomic variables, namely exchange rate, interest rate, and unemployment rate to stock prices.  This study uses quantitative methods. The population in this study are all oil and gas mining sub-sector  companies  listed  in  Indonesia  Stock  Exchange  in  the  period  2012-2017. Sample selection technique is by using purposive sampling method. Based on  predetermined  criteria,  acquired 7 oil  and  gas  mining  sub-sector  companies sampled in this study. Data analysis techniques in this study using multiple linear regression analysis.  The results showed that the variables  simultaneously exchange  rate, interest rate, and  unemployment rate significant effect on stock price of oil and gas mining sub-sector  companies. Partially, variable Exchange Rate and Interest  Rate was  a  significant  influence  on stock price, while the variable Unemployment Rates no significant influence on stock price.
PENGARUH EARNING PER SHARE, DEBT TO EQUITY RATIO, RETURN ON EQUITY, DAN CURRENT RATIO TERHADAP PRICE TO BOOK VALUE PERUSAHAAN SUB SEKTOR ADVERTISING PRINTING MEDIA YANG TERDAFTAR DI BURSA EFEK INDONESIA TAHUN 2014-2017
Authors: Maudy Mutiara Via , Ismanto Deny
Published: April 2021

This study aims to examine the effect of Earning Per Share, Debt To Equity Ratio, Return On Equity and Current Ratio to Price to Book Value on advertising printing  media  companies listed on the Indonesia Stock Exchange for the period 2014-2017. This  research  is  descriptive  quantitative  research.  The  research  population  is  all advertising printing  media  companies listed on the Indonesia Stock Exchange for the period 2014-2017 with a total of 15 companies. The sample selection was determined by purposive sampling technique with the criteria of the stock being sampled were the companies that published theirfinancial statements during the consecutive research year, so that samples are  12 companies were obtained. This study uses a statistical panel data regression analysis tool. The results of the study using Earning Per Share, Debt To Equity Ratio, Return On Equity and Current Ratio to Price to Book Value have results, the Debt To Equity Ratio variable affects the dependent variable Price to Book Value, while the other independent variables have no effect, that is; Earning Per Share, Return On Equity and Current Ratio. With the value of R Squared of 66.5% which explains the large influence on Price to Book Value.
PENGARUH PROMOSI, HARGA DAN KUALITAS PRODUK TERHADAP KEPUTUSAN PEMBELIAN SMARTPHONE VIVO PADA MASYARAKAT KOTA YOGYAKARTA
Authors: Prawira Endy Yudha , Sukardi Sukardi
Published: April 2021

This study aims to determine the effect of promotion, price, and product quality for Smartphone purchase decisions VIVO The population of this research is the consumers of the city community Yogyakarta which is more than 17 years old and has already been make purchases of VIVO Smartphone products and samples used as many as 95 consumers in Yogyakarta, community engineering Sampling in this study is Purposive Sampling. The data analysis tool used is a linear regression test multiple. The results of this study indicate that promotions and Product quality has a significant effect on purchasing decisions while the price does not significantly influence the decision purchase. Simultaneously promotion, price, and quality variables significant effect on purchasing decisions. Promotion factor, price, and product quality affect purchasing decisions of 24.1% while the remaining 75.9% is influenced by Other variables that are not present in this study. Researchers expected can test variables other than product promotion, price, and quality to make a purchase decision.
Islamic Capital Market Reaction on Presidential Election 2019 (Case Study of the Jakarta Islamic Index)
Authors: Utami Syintia Dwi , Qoyum Abdul
Published: April 2021

General Election (GE) is one of the most important political issues which has an impact on the economic condition. This research aims to reveal the effect of General Election 2019 on the capital market reaction. Specifically, the study compares the impact of three events in the GE 2019, namely, The General Election 2019, the announcement of Elected President 2019, and Mahkamah Konstitusi (MK) decision. By employing Abnormal Return with t-test analysis, the study reveals that the publication of the elected-president has the most significant impact on the Islamic Capital Market compares to the two other events. While using Trading Volume Activity (TVA), all the three events of GE 2019 affects the TVA. This finding suggests that for the Islamic capital market investor, the announcement of the elected president is seen as the most significant event that determines the whole of economic condition for the next five years. Hence, for the policy-makers, they must focus on the date of the announcement by preparing such a policy to maintain the market condition.
Financial Technology Regulation in Malaysia and Indonesia: A Comparative Study
Authors: Diniyya Aulia Arifatu , Aulia Mahdiah , Wahyudi Rofiul
Published: April 2021

Introduction to The Problem: The era of innovation in information technology has emerged to ease daily commercial transactions. The innovation in financial technology has created numerous new business model to cater the customers’ need. This development needs a regulation and supervision to avoid chaos in the financial system. Particularly in Indonesia and Malaysia, which both countries were recorded by CCAF to be among the top countries in the ASEAN region by the number of fintech firms.Purpose/Objective Study: This study is aimed to analyze the financial technology regulation and supervision in Indonesia and Malaysia.Design/Methodology/Approach: The comparative study is conducted to compare the regulatory environment related to Digital payment, Equity Crowdfunding, P2P lending, Crypto Asset, Consumer protection, cybersecurity law and Islamic fintech in both countriesFindings: The study found that compared to Malaysia, Indonesia has lack of jurisdiction that protecting the customer from the cyber-attack which highly threatening the fintech industry. Both countries also treat ICO differently. Malaysia treats it under RMO guidelines, while Indonesia banned it as the method of payment but still allows the trading of ICO as a commodity under Commodity Futures Regulatory Agency.
A creative collaboration during the COVID-19 pandemic: an intergenerational initiative
Authors: Pritchard Fiona
Published: April 2021

Lockdown restrictions signalled an end to in-person interaction and collaboration. However, video conferencing platforms have allowed an opportunity to continue the creative engagement of care home residents. Fiona Pritchard elaborates the results of an intergenerational creative project launched during the pandemic.
Wavelength calibration methods in laser wavelength measurement
Authors: Yuan Liang , Qiu Lirong
Published: April 2021

At present, accurate wavelength calibration plays an important role in laser spectrum measurements. Although the wavelength calibration methods have been investigated for a long time, there are no techniques that are particularly designed for laser spectral calibration to the best of our knowledge. A mathematical model for calibrating a pulse laser wavelength is first established, to the best of our knowledge. According to the analysis formula of dispersion aberration, a flat-field concave grating in the near-infrared band is designed. Then, a wavelength calibration model based on concave grating spectroscopy is proposed. Through adjusting the spectra of each pixel, we design a calibration algorithm based on the cubic spline interpolation and kernel regression methods. By compensating and interpolating spectral data, accurate wavelengths are obtained. Finally, some experiments verify the calibration performance of the proposed method. Meanwhile, the uncertainty of measurement is also analyzed.
Infrared image impulse noise suppression using tensor robust principal
component analysis and truncated total variation
Authors: Zhang Yan , Shao Yuyi , Shen Jinyue , Lu Yao , Zheng Zhouzhou , Sidib Yaya , Yu Bin
Published: April 2021

Infrared image denoising is an essential inverse problem that has been widely applied in many fields. However, when suppressing impulse noise, existing methods lead to blurred object details and loss of image information. Moreover, computational efficiency is another challenge for existing methods when processing infrared images with large resolution. An infrared image impulse-noise-suppression method is introduced based on tensor robust principal component analysis. Specifically, we propose a randomized tensor singular-value thresholding algorithm to solve the tensor kernel norm based on the matrix stochastic singular-value decomposition and tensor singular-value threshold. Combined with the image blocking, it can not only ensure the denoising performance but also greatly improve the algorithm’s efficiency. Finally, truncated total variation is applied to improve the smoothness of the denoised image. Experimental results indicate that the proposed algorithm outperforms the state-of-the-art methods in computational efficiency, denoising effect, and detail feature preservation.
Propagation of nonuniformly correlated Bessel beams in the air–sea turbulent link
Authors: Zhang Yalin , Wang Minghao , Zhou Zeyu
Published: April 2021

Nonuniformly correlated Bessel beams (NUCBs) have arbitrarily designed coherence distribution in the radial direction, which, coupled with the intrinsic nondiffraction characteristic of the Bessel amplitude, is supposed to exhibit improved reception quality in turbulent links. In this paper, the performance of NUCBs propagating through a special type of turbulent link, namely, the air–sea link, is analyzed. By means of wave optics simulation, the calculation of propagation properties such as aperture-averaged scintillation and the mean SNR of the NUCBs is conducted. Moreover, a comparative study between the nonuniformly and uniformly correlated Bessel beams (UCBs) is carried out.
Manifestation of aberrations in full-field optical coherence tomography
Authors: Barolle Victor , Scholler Jules , Mecê Pedro , Chassot Jean-Marie , Groux Kassandra , Fink Mathias , Claude Boccara A. , Aubry Alexandre
Published: April 2021

We report on a theoretical model for image formation in full-field optical coherence tomography (FFOCT). Because the spatial incoherence of the illumination acts as a virtual confocal pinhole in FFOCT, its imaging performance is equivalent to a scanning time-gated coherent confocal microscope. In agreement with optical experiments enabling a precise control of aberrations, FFOCT is shown to have nearly twice the resolution of standard imaging at moderate aberration level. Beyond a rigorous study on the sensitivity of FFOCT with respect to aberrations, this theoretical model paves the way towards an optimized design of adaptive optics and computational tools for high-resolution and deep imaging of biological tissues.
Active tapered double-clad fiber with low birefringence
Authors: Fedotov Andrei , Ustimchik Vasilii , Rissanen Joona , Kolosovskii Alexander , Voloshin Victor , Vorob’ev Igor , Gumenyuk Regina , Chamorovskiy Yuri , Filippov Valery
Published: April 2021

We addressed the problem of a state of polarization (SOP) drift caused by heating under intense clad pumping in different types of active tapered double-clad fibers. We investigated experimentally the variations of the SOP and degree of polarization (DOP) under clad pumping in polarization-maintaining (PANDA type) and regular (non-PM) Yb-doped double-clad large mode area tapered fibers. We discovered that the birefringence of active fibers is highly dependent on the launched pump power. To solve the problem of the SOP drift in active large mode are fibers, we, for the first time to the best of our knowledge, presented an active double-clad fiber with low intrinsic birefringence as a gain medium. An Yb-doped spun tapered double-clad fiber (sT-DCF) with intrinsic birefringence as low as 1.45×10−8 was manufactured and experimentally studied. We have proved experimentally that the DOP and SOP remains more stable in sT-DCF with increasing pump power compared to PM PANDA-type and regular non-PM tapered double-clad fibers. In particular, the SOP drift in sT-DCF is almost one order of magnitude less than in other tapered fibers, while the DOP drift in sT-DCF is comparable with the drift in PANDA-type fiber and one order of magnitude less than in the non-PM tapered fiber. An active sT-DCF showing efficient amplification was demonstrated in an all-fiber-based picosecond master-oscillator power-amplifier scheme. The system delivered 50 ps pulses at 1040 nm with an average power of 50 W, 34 dB gain, 26 µm MFD and perfect beam quality.
Phase-difference imaging based on FINCH
Authors: Sheng Wei , Liu Youwen , Shi Yaoyao , Jin Hengchun , Wang Jiming
Published: April 2021

The diffraction theory was used to calculate the point spread function (PSF) of a typical Fresnel incoherent correlation holography (FINCH) system. It was found that the phase of the reconstructed image corresponds to the phase difference between the original points in two mutually perpendicular polarization directions. The experimental results show that the FINCH system with reasonable parameters can realize the phase-difference imaging of objects and measure the phase difference of cross-polarization directions in birefringent materials.
Resource-effective quantum key distribution: a field trial in Padua city center
Authors: Avesani Marco , Calderaro Luca , Foletto Giulio , Agnesi Costantino , Picciariello Francesco , Santagiustina Francesco B. L. , Scriminich Alessia , Stanco Andrea , Vedovato Francesco , Zahidy Mujtaba , Vallone Giuseppe , Villoresi Paolo
Published: April 2021

Field trials are of key importance for novel technologies seeking commercialization and widespread adoption. This is also the case for quantum key distribution (QKD), which allows distant parties to distill a secret key with unconditional security. Typically, QKD demonstrations over urban infrastructures require complex stabilization and synchronization systems to maintain a low quantum bit error and high secret key rates over time. Here we present a field trial that exploits low-complexity self-stabilized hardware and a novel synchronization technique, to perform QKD over optical fibers deployed in the city center of Padua, Italy. Two techniques recently introduced by our research group are evaluated in a real-world environment: the iPOGNAC polarization encoder was used for preparation of the quantum states, while temporal synchronization was performed with the Qubit4Sync algorithm. The results here presented demonstrate the validity and robustness of our resource-effective QKD system, which can be easily and rapidly installed in an existing telecommunication infrastructure, thus representing an important step towards mature, efficient, and low-cost QKD systems.
Excellent performance of a cryogenic Nd:YAlO3 laser with low wavefront distortion based on zero thermal expansion
Authors: Song Yan-Jie , Xu Yuan-Zhai , Meng Shuai , Jiang Xing-Xing , Shao Chong-Feng , Song Ze-Xin , Zong Nan , Wang Zhi-Min , Bo Yong , Wang Xiao-Jun , Lin Zhe-Shuai , Peng Qin-Jun
Published: April 2021

High-power solid-state lasers with good beam quality are attracting great attention on account of their important applications in industry and military. However, the thermal effects generated in the laser host materials seriously limit power scaling and degrade the beam quality. Thermal lensing and thermally induced wavefront deformation are the main causes of the beam quality deterioration. Here we investigate the performance of a zero thermal expansion (ZTE) solid-state laser gain material. In a proof-of-principle experiment, an

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(Nd:YAP) perovskite crystal is chosen to be the gain medium for ZTE around 180 K. The laser performance spanning the temperature range from 80 to 290 K is studied. The maximum output power and minimum threshold pump power were obtained at a temperature of 180 K. Moreover, the measured thermal focal power and peak-to-valley value of the wavefront distortion also reach a minimum at this temperature, an additional benefit from the crystal’s ZTE coefficient. We envisage that these results will open a new route towards the development of high-power and high-beam-quality lasers through the use of ZTE gain materials.
Topological scattering singularities and embedded eigenstates for polarization control and sensing applications
Authors: Sakotic Zarko , Krasnok Alex , Alú Andrea , Jankovic Nikolina
Published: April 2021

Epsilon-near-zero and epsilon near-pole materials enable reflective systems supporting a class of symmetry-protected and accidental embedded eigenstates (EEs) characterized by a diverging phase resonance. Here we show that pairs of topologically protected scattering singularities necessarily emerge from EEs when a non-Hermitian parameter is introduced, lifting the degeneracy between oppositely charged singularities. The underlying topological charges are characterized by an integer winding number and appear as phase vortices of the complex reflection coefficient. By creating and annihilating them, we show that these singularities obey charge conservation, and provide versatile control of amplitude, phase, and polarization in reflection, with potential applications for polarization control and sensing.
Control of pre-replicative complex during the division cycle in Chlamydomonas reinhardtii
Authors: Ikui Amy E. , Ueki Noriko , Pecani Kresti , Cross Frederick R.
Published: April 2021

DNA replication is fundamental to all living organisms. In yeast and animals, it is triggered by an assembly of pre-replicative complex including ORC, CDC6 and MCMs. Cyclin Dependent Kinase (CDK) regulates both assembly and firing of the pre-replicative complex. We tested temperature-sensitive mutants blocking Chlamydomonas DNA replication. The mutants were partially or completely defective in DNA replication and did not produce mitotic spindles. After a long G1, wild type Chlamydomonas cells enter a division phase when it undergoes multiple rapid synchronous divisions (‘multiple fission’). Using tagged transgenic strains, we found that MCM4 and MCM6 were localized to the nucleus throughout the entire multiple fission division cycle, except for transient cytoplasmic localization during each mitosis. Chlamydomonas CDC6 was transiently localized in nucleus in early division cycles. CDC6 protein levels were very low, probably due to proteasomal degradation. CDC6 levels were severely reduced by inactivation of CDKA1 (CDK1 ortholog) but not the plant-specific CDKB1. Proteasome inhibition did not detectably increase CDC6 levels in the cdka1 mutant, suggesting that CDKA1 might upregulate CDC6 at the transcriptional level. All of the DNA replication proteins tested were essentially undetectable until late G1. They accumulated specifically during multiple fission and then were degraded as cells completed their terminal divisions. We speculate that loading of origins with the MCM helicase may not occur until the end of the long G1, unlike in the budding yeast system. We also developed a simple assay for salt-resistant chromatin binding of MCM4, and found that tight MCM4 loading was dependent on ORC1, CDC6 and MCM6, but not on RNR1 or CDKB1. These results provide a microbial framework for approaching replication control in the plant kingdom.
Bioinformatic analysis linking genomic defects to chemosensitivity and mechanism of action
Authors: Covell David G.
Published: April 2021

A joint analysis of the NCI60 small molecule screening data, their genetically defective genes, and mechanisms of action (MOA) of FDA approved cancer drugs screened in the NCI60 is proposed for identifying links between chemosensitivity, genomic defects and MOA. Self-Organizing-Maps (SOMs) are used to organize the chemosensitivity data. Student’s t-tests are used to identify SOM clusters with enhanced chemosensitivity for tumor cell lines with versus without genetically defective genes. Fisher’s exact and chi-square tests are used to reveal instances where defective gene to chemosensitivity associations have enriched MOAs. The results of this analysis find a relatively small set of defective genes, inclusive ofABL1,AXL,BRAF,CDC25A,CDKN2A,IGF1R,KRAS,MECOM,MMP1,MYC,NOTCH1,NRAS,PIK3CG,PTK2,RPTOR,SPTBN1,STAT2,TNKSandZHX2, as possible candidates for roles in chemosensitivity for compound MOAs that target primarily, but not exclusively, kinases, nucleic acid synthesis, protein synthesis, apoptosis and tubulin. These results find exploitable instances of enhanced chemosensitivity of compound MOA’s for selected defective genes. Collectively these findings will advance the interpretation of pre-clinical screening data as well as contribute towards the goals of cancer drug discovery, development decision making, and explanation of drug mechanisms.
Impact of pulsed-wave-Doppler velocity-envelope tracing techniques on classification of complete fetal cardiac cycles
Authors: Sulas Eleonora , Ortu Emanuele , Urru Monica , Tumbarello Roberto , Raffo Luigi , Solinas Giuliana , Pani Danilo
Published: April 2021

Fetal echocardiography is an operator-dependent examination technique requiring a high level of expertise. Pulsed-wave Doppler (PWD) is often used as a reference for the mechanical activity of the heart, from which several quantitative parameters can be extracted. These aspects suggest the development of software tools that can reliably identify complete and clinically meaningful fetal cardiac cycles that can enable their automatic measurement. Several scientific works have addressed the tracing of the PWD velocity envelope. In this work, we assess the different steps involved in the signal processing chains that enable PWD envelope tracing. We apply a supervised classifier trained on envelopes traced by different signal processing chains for distinguishing complete and measurable PWD heartbeats from incomplete or malformed ones, which makes it possible to determine the impact of each of the different processing steps on the detection accuracy. In this study, we collected 43 images and labeled 174,319 PWD segments from 25 pregnant women volunteers. By considering seven envelope tracing techniques and the 23 different processing steps involved in their implementation, the results of our study reveal that, compared to the steps investigated in most other works, those that achieve binarisation and envelope extraction are significantly more important (p < 0.05). The best approaches among those studied enabled greater than 98% accuracy on our large manually annotated dataset.
Long-term treatment with transcranial pulsed electromagnetic fields improves movement speed and elevates cerebrospinal erythropoietin in Parkinson’s disease
Authors: Jensen Bente Rona , Malling Anne Sofie Bøgh , Schmidt Sissel Ida , Meyer Morten , Morberg Bo Mohr , Wermuth Lene
Published: April 2021

Background

Parkinson’s disease is characterized by motor dysfunctions including bradykinesia. In a recent study, eight weeks of daily transcranial stimulation with bipolar pulsed electromagnetic fields improved functional rate of force development and decreased inter-hand tremor coherence in patients with mild Parkinson’s disease.

Objective

To investigate the effect of long-term treatment with transcranial bipolar pulsed electromagnetic fields on motor performance in terms of movement speed and on neurotrophic and angiogenic factors.

Methods

Patients diagnosed with idiopathic Parkinson’s disease had either daily 30-min treatment with bipolar (±50 V) transcranial pulsed electromagnetic stimulation (squared pulses, 3ms duration) for three eight-week periods separated by one-week pauses (T-PEMF group) (n = 16) or were included in a PD-control group (n = 8). Movement speed was assessed in a six-cycle sit-to-stand task performed on a force plate. Cerebrospinal fluid and venous blood were collected and analyzed for erythropoietin and vascular endothelial growth factor.

Results

Major significant improvement of movement speed compared to the natural development of the disease was found (p = 0.001). Thus, task completion time decreased gradually during the treatment period from 10.10s to 8.23s (p<0.001). The untreated PD-control group did not change (p = 0.458). The treated group did not differ statistically from that of a healthy age matched reference group at completion of treatment. Erythropoietin concentration in the cerebrospinal fluid also increased significantly in the treated group (p = 0.012).

Conclusion

Long-term treatment with transcranial bipolar pulsed electromagnetic fields increased movement speed markedly and elevated erythropoietin levels. We hypothesize that treatment with transcranial bipolar pulsed electromagnetic fields improved functional performance by increasing dopamine levels in the brain, possibly through erythropoietin induced neural repair and/or protection of dopaminergic neurons.
Agricultural co-operatives participating in supply chain integration in China: A qualitative comparative analysis
Authors: Zhang Jiacheng , Luo Jianli , Li Jia
Published: April 2021

Agro-food supply chain integration (ASCI) plays a growingly important role in the stable and sustainable development of agriculture. However, it is challenging for core firms to integrate the small-scale and scatted farmers due to complex transaction processes and volatile relationships in China. Agricultural co-operatives are organizations that unite farmers’ power and help them achieve economic benefits. Our research focuses on ASCI from the perspective of co-operatives. A comprehensive cooperative framework, including trinity co-operatives and trinity federations, is conducted to figure out the position and process of agricultural co-operatives in ASCI, while QCA provides detailed collaborative patterns for agricultural co-operatives to adopt. Results show that agricultural co-operatives can achieve high economic and social/environmental performance when participating in ASCI. This study further completes the ASCI literature and offers many managerial and academic implications to co-operatives’ members and policy-makers.