bluuebunny/crossref_metadata_2025 huggingface dataset:
Comparative Assessment of Poverty Indicators in the European Part of the CIS and the European Union as a Social Criterion of Economic Security
Authors: Tsvetkov V. A. , Zoidov K. Kh. , Yankauskas K. S. , Kobil Sh.
Published: November 2020

The presented study comparatively analyzes indicators of the level of poverty and social inequality in Belarus, Ukraine, Moldova, and the European Union (EU) as a criterion of national economic security.

Aim. The study aims to examine existing approaches to determining the level of poverty and its dynamics and to consider suggestions for improving this methodology.

Tasks. The authors examine and comparatively analyze approaches and methods for determining the level of poverty and its dynamics in the European Union and the CIS countries that are not members of the Eurasian Economic Union (EAEU).

Methods. This study uses the methods of systems analysis, evolutionary-institutional theory, and historical approach.

Results. Determining the level of poverty based on the number of citizens with incomes below the subsistence level can lead to misrepresentation of the actual state of this phenomenon. Calculation of poverty indicators based on consumer spending provides more accurate data on the level of poverty in a country where a significant share of the population’s income is generated by remittances from individuals living abroad, which are not reflected in official income statistics. A comparative analysis of poverty dynamics shows that in 2013 the level of poverty in all four examined countries decreased compared to 2006. Poverty dynamics in Russia and Belarus is more synchronized than in Ukraine and Moldova. A common methodology for calculating the level of poverty in all EU countries makes it possible to conduct a more thorough comparative analysis of poverty dynamics and to formulate more accurate recommendations in the field of anti-poverty policies. Based on the identified poverty dynamics in the EU and Russia, it is highly possible that strategic objectives on poverty reduction in the European Union and Russia will not be completed.

Conclusions. To exclude the possibility of interested authorities influencing the dynamics of the poverty indicator by changing its threshold values depending on the current economic or political situation, it is necessary to switch to comprehensive assessment of this indicator in Russia. For comparative cross-country data analysis, it is advisable to consider the possibility of creating a Eurasian Statistics Service within the EAEU that would collect statistics and standardize statistical methods among the EAEU member states.
TAKING OF HOSTAGES
Authors: Okulov V. , Pulyayev I. , Melnyk O.
Published: November 2020

The article deals with the issue of taking the ship by pirates and holding the ship's crew hostage. Psychological types of terrorists. Three types of behavior observed in extreme situations are discussed. Forms of social organization held hostage or in captivity. Relationships with thieves. Which rule should be observed when being held hostage. Behavior during interrogation and storming the building by special forces.
Acidosis tubular renal asociada a intoxicación por trimetoprim-sulfametoxazol
Authors: Perdomo Quintero Daniela , Gomez Barrios Camilo Ernesto , Zamora Suarez Adriana , Cifuentes Gonzalez Juan Camilo
Published: November 2020

La combinación de trimetoprim-sulfametoxazol (TMP-SMZ o cotrimoxazol) tiene efecto bactericida sobre cocos gram positivos y bacilos gram negativos, con uso clínico en infecciones de piel y tejidos blandos, del tracto respiratorio y urinario, además con relevancia en la profilaxis y tratamiento de infecciones oportunistas en pacientes inmunosupresos.

Su uso en pacientes inmunocompetentes a dosis establecidas es seguro, con una baja tasa de eventos adversos. Sin embargo, en población con inmunosupresión: virus de inmunodeficiencia humana (VIH), trasplante, o usuarios de esteroides; los efectos adversos (EA) por este medicamento alcanzan 83% y por administración parenteral en dosis elevadas se ha documentado acidosis láctica secundaria al vehículo polietilenglicol.

Presentamos dos casos de pacientes que ingirieron TMP-SMZ en sobredosis, desarrollando acidosis tubular renal (ATR) tipo 2, la cual no se ha descrito en este medicamento y cuya hiperlactatemia no es explicable por el excipiente polietilenglicol debido a que el consumo fue oral
Bruce Lee’s Case: Intellectual Property vs. Free Access to Culture and Protection of Public Interest
Authors: Łągiewska Magdalena , Zeidler Kamil
Published: November 2020

This article provides a comprehensive analysis of Bruce Lee’s case by presenting the intellectual property rights mechanisms in the People’s Republic of China. The aim of this paper is to bring attention to the trademark law as well as to shed new light on infringements of personality rights, in particular portrait rights, in trademarks. This begs the question as to what kind of legal action should be undertaken by Bruce Lee’s heiress to protect her rights. Moreover, the article touches upon the conflict between the public interest and trademarks and tries to answer the question how to balance private holders’ rights with the public interest. In order to provide some hypothetical scenarios, the study focuses primarily on Bruce Lee’s case background and the new amendments to trademark law in China, bringing the authors to final deliberations on Bruce Lee as part of modern culture belonging to mankind as a whole. Therefore, our research aims to find a solution to the challenging problem of reconciling intellectual property rights protection mechanisms with the common cultural heritage.
Adoption of IR4.0 into Agricultural Sector in Malaysia: Potential and Challenges
Authors: Mat Lazim Rabiah , Mat Nawi Nazmi , Masroon Muhammad Hairie , Abdullah Najidah , Che Mohammad Iskandar Maryani
Published: November 2020

Agriculture remains as one of the important economic sectors in Malaysia which provides an employment for more than 1.6 million people. However, the growth of this sector may be hampered by a small-scale production, limited technological application, declining number of arable lands, environmental degradation due to climate change, rapid urbanization and aging farmers. In order to improve the competitiveness of the agricultural sector, farmers are encouraged to fully utilise modern technologies in their farms. In this context, adoption of industrial revolution 4.0 (IR4.0) in agricultural sector could bring many benefits, especially in minimizing the production costs and improving the quality of the products. Thus, this review focuses on the adoption strategies of IR4.0 into agricultural sector in Malaysia. A suitability of enabling technologies such as IoT, autonomous robot, big data analytics and artificial intelligent which are pillars for IR4.0 are individually evaluated. The readiness of agricultural industry in Malaysia to embrace this new concept is also discussed. The review also investigates the potentials and possible challenges would be faced by the industry in embracing IR4.0. The recommendations are also provided for farmers, industrial players and policy makes to makes sure a smooth adoption of IR4.0 into agricultural sector in Malaysia.
El Proceso de Selección y su Efecto en el Desempeño Laboral en el Personal de las Microfinancieras de la Ciudad de Quetzaltenango
Authors: León Castro Dalila Sofí­a
Published: November 2020

En esta investigación se analizó el proceso de selección y su efecto en el desempeño laboral en el personal de las Microfinancieras de la ciudad de Quetzaltenango, para el estudio se incluyó trece Microfinanciera, tomando como sujetos de investigación a los Coordinadores de oficina, Coordinadores de Recursos Humanos, personal administrativo y de campo. Las dimensiones abordadas fueron: el análisis del proceso de selección, la identificación de técnicas de selección, establecer el tiempo que dura el proceso de selección desde el momento en que se publica un puesto vacante hasta que se contrata al personal, la evaluación del desempeño laboral del personal, la identificación de los aspectos que se toman en cuenta y de mayor ponderación en la evaluación de desempeño laboral. Para recopilar la información se aplicó la técnica de la entrevista y se utilizó como instrumento dos guí­as diferentes de entrevista estructurada. Se concluyó, que el proceso de selección de personal tiene una estrecha relación con el desempeño laboral, lo que genera un efecto cuando una de las variables no se relaciona adecuadamente. Se determinó que las Microfinancieras de la ciudad de Quetzaltenango a pesar de tener bien diseñados los procesos de selección, así­ como la evaluación de los empleados, no se aplican de forma adecuada las técnicas de selección, debido a que no hay una separación de ellas, para los diferentes puestos ofertantes lo que no permite conocer realmente las caracterí­sticas de los aspirantes. Esto hace indispensable diferenciar las técnicas para cada posición que se tiene dentro de las Microfinancieras, para reclutar y seleccionar a los candidatos adecuados. La propuesta va enfocada, en dar a conocer a las Microfinanciera la importancia de hacer una separación de las técnicas de selección de personal, categorizándolas de acuerdo con la posición, esto permitirá contar con el personal apropiado y con un buen desempeño laboral.
Characterization of Rice Husk and Coconut Shell Briquette as an Alternative Solid Fuel
Authors: Jamilu Tanko  , Umaru Ahmadu  , Umar Sadiq  , Alhassan Muazu
Published: November 2020

The physical properties of briquettes made from rice husk and coconut shell in different ratios were evaluated based on their thermo-physical properties. The calculated calorific values of the rice husk and coconuts hell are 16.51 MJ/kg and 18.60 MJ/kg, with densities of 1.50 g/cm3 and 3.00 g/cm3, respectively. Coconut shell has lower moisture and ash content of 10% and 26%, respectively, before briquetting. Comparisons of the experimental and calculated calorific values of the briquettes (17 to 21 MJ/kg) showed that they are in agreement with those of the American Standard of Testing Materials (ASTM) and those reported in the literature. The results further showed that the calorific values of the five briquette ratios were not a function of their moisture and ash contents, rather their total carbon contents. The briquette at the ratio 90:10 of rice husk to coconut shell has the highest calorific value and implies that it has more heating advantages and will therefore be suitable as an alternative solid fuel.
FEATURES OF THE COENOFLORA OF LAWNS IN UFA
Authors: Anishchenko I. E. , Golovanov Ya. M. , Zhigunov O. Yu. , Abramova L. M.
Published: November 2020

Lawns are the most important element of the modern urban landscape. They are made by planting grasses at specially prepared homogeneous plots. The coenoflora of Ufa lawns currently includes 112 species of higher plants from 90 genera and 26 families. The characteristic of coenoflora is given on the basis of the performed geobotanical descriptions. Classical floristical analysis of coenoflora is carried out for various floristic spectra: family-genus, biomorphological, horological, ecological, and phytosociological. An assessment of the economic significance of the species was also given. The adventive component of the coenoflora consisting of 29 species was analyzed individually. It accounts for 25.9 % of the total species composition. It is specified that indexes of adventization of coenoflora are relatively low in Ufa in comparison with many other coenofloras of large cities. It can be connected with nature of habitats (absence of soil cover movement and relatively dense cover of lawn grasses and, consequently, absence of soil areas not occupied by plants. Such conditions prevent growing of adventive species). Particularly aggressive invasive plant species (Erigeron annuus, Hordeum jubatum, Solidago canadensis ) are recorded in the group of adventive species. The research proves that in large cities with great disruption of vegetation cover there is an increasing necessity of arranging high-quality lawn ground covers of different types, based on the correct selection of lawn species, optimal agricultural techniques. Ongoing processes that take place in the lawn plant communities should be considered.
REBIOPSY IN PATIENTS WITH ADVANCED NON-SMALL CELL LUNG CANCER AS THE BASIS OF INDIVIDUALIZED TREATMENT
Authors: Laktionov Konstantin , Zaretskiy Andrey , Yudin Denis , Shagin Dmitriy , Breder Valeriy
Published: November 2020

We have conducted a pilot study of repeated tumor biopsy followed by molecular testing in order to facilitate treatment correction in patients with advanced non-small cell lung cancer progressing on their current therapy. Repeated tumor biopsy was showed to be feasible, well tolerated and highly informative. Use of molecular-matched therapy was associated with significant increase in overall survival in this difficult-to-treat group of cancer patients.
MODERN STRATEGIES FOR TREATMENT OF PATIENTS WITH BRAIN METASTASES
Authors: Banov Sergey , Golanov Andrey , Ilyalov Sergey , Vetlova Yelena , Antipina Natalya , Bekyashev Ali , Potapov Aleksandr
Published: November 2020

Brain metastases are the most common intracranial malignancy accounting for significant morbidity and mortality in cancer patients. The current treatment paradigm for brain metastasis depends on patient’s overall health status, the primary tumor pathology and the number and location of brain lesions. Treatment of brain metastases should be individualized for each patient: in case of single brain metastasis surgery or radiosurgery should be considered as first options of treatment; in case of multiple lesions whole-brain radiotherapy is the standard of care in association with systemic therapy or surgery/radiosurgery. Herein, we review the modern management options for these tumors including surgical resection, radiotherapy. In the last decades TKIs or monoclonal antibodies have showed an increase in overall response rate and overall survival in Phase II-III trials. The aim of this paper is to make an overview of the current approaches in management of patients with brain metastases.
THE ROLE OF PHOSPHATIDYLINOSITOL-3-KINASE IN CARCINOGENESIS
Authors: Oskina Natalya , Shcherbakov Aleksandr , Filipenko Maksim , Kushlinskiy Nikolay , Ovchinnikova L.
Published: November 2020

Currently it is established that cancer is a genetic disease and that somatic mutations are the initiators of the carcinogenic process. The PI3K/AKT/mTOR pathway is an important intracellular signaling pathway regulating the cell growth and metabolic activities. Aberrant activation of the PI3K pathway is commonly observed in many different cancers. In this review we analyze the genetic alterations of PI3K pathway in a variety of human malignancies and discuss their possible implications for diagnosis and therapy.
THE EFFECTIVENESS OF SCREENING FOR CANCER
Authors: Barchuk Anton , Gagua K. , Tarkov S. , Nefedova A. , Nefedov Andrey , Shcherbakov Aleksandr , Barchuk Aleksey , Kanaev Sergey , Gombolevskiy Viktor , Belyaev Aleksey , Arsenev Andrey , Kostitsyn K.
Published: November 2020

Cancer screening literature was discussed in this review publication. Broad spectrum of studies was used to make conclusion about effectiveness of screening methods in reaching its major objectives, perspective of screening methods for several cancer types were also discussed. Qualitative assessment of studies was done. Cervical cancer, breast cancer and colorectal cancer screening was proved to be effective. Effectiveness of prostate and lung cancer screening as well as population-based stomach cancer prevention is also discussed. Negative and inconclusive results of screening studies of the other cancer types were also mentioned and perspectives for future diagnostics option for cancer screening were given.
THE ASSOCIATION OF THE APOLIPOPROTEIN E4 ALLELE (RS 429358) WITH OVARIAN SEROUS ADENOCARCINOMA
Authors: Ivanova Tatyana , Sychenkova Nataliya , Khorokhorina Vera , Ryabchenko Nikolay , Ivanov Sergey , Krikunova Lyudmila
Published: November 2020

The distribution of APOE 4 allele (rs 429358, C) was analyzed in healthy women (N=454) and patients with ovarian serous adenocarcinoma (N=114) in order to identify genetic predisposition to the disease. We determined the prognostic indicators of the E4 allele as a marker: odds ratio (OR) and AUC (Area Under Curve) - an area under the ROC curve. It was shown that APOE 4 allele was significantly associated with ovarian serous adenocarcinoma (p = 0,003; 0R=1,94; AUC=0,55). The Е4 genotypes frequency was significantly increased among patients (p = 0.02; 0R=1,8). Separate analysis of the two age subgroups (over 46 years and younger) found that the chance of developing ovarian serous adenocarcinoma was significantly increased for older women (p = 0,006; OR = 2,24, AUC = 0,76). Possible associations of APOE 4 with the ovarian serous adenocarcinoma in women of reproductive age deserve further studying.
CHARACTERISTICS OF RELAPSES AFTER SURGICAL AND COMBINED TREATMENT FOR NON-SMALL CELL LUNG CANCER
Authors: Solodkiy Vladimir , Sotnikov Vladimir , Kharchenko Vladimir , Chkhikvadze Vladimir , Panshin Georgiy , Nudnov Nikolay , Morgunov Aleksandr , Trotsenko S.
Published: November 2020

Postoperative radiation therapy (PORT) in the combined treatment of non-small cell lung cancer (NSCLC) can improve the locoregional control of the disease regardless of the prevalence of tumor and improve the survival rates for the IIA-IIIB stage NSCLC compared with the surgical method alone. For more accurate assessment of the role of PORT the comparative analysis of the relapses structure after combined modality and surgical treatment of NSCLC was carried out.
CLINICAL-TOPOMETRIC PREPARATION FOR MODERN CONFORMAL EXTERNAL-BEAM RADIOTHERAPY (PRACTICAL ASPECTS)
Authors: Solodkiy Vladimir , Panshin Georgiy , Ivashin Aleksey
Published: November 2020

The article emphasizes that at the present stage of development of clinical oncology radiotherapy for malignant tumors is one of the leading conservative methods of treatment of cancer of virtually all sites and at all stages of the neoplastic process. Thus for practical modern clinical-topographic training of cancer patients it is used biometric, radiological, isotopic, ultrasound and computed tomography studies, of which today medical imaging is an essential tool in the actual preparation of the computer the most optimal dosimetry plan for remote conformal radiotherapy.
Preliminary results of preoperative chemoradiotherapy with consolidating chemotherapy in patients with locally advanced rectal cancer
Authors: Rasulov Arsen , Kuzmichev Dmitriy , Polynovskiy Andrey , Aliev Vyacheslav , Tkachev Sergey , Kozlov Nikolay , Mamedly Z. , Suraeva Y.
Published: November 2020

Preliminary results of complex treatment of patients with locally advanced rectal cancer with preoperative chemoradio- therapy (CRT) and consolidating chemotherapy (CT) are dis- cussed in the article. The study includes 89 patients of a stage T3 (CRM +) - 4N0-2M0 of the tumor process. In group “A” there was performed preoperative CRT in an isozedosis of 56 Gy against a background of CT by capecitabine 825 mg / m2 twice daily per os with consolidating CT (2 courses of XELOX). In group “B” there was conducted a similar treat- ment without consolidating CT. Group “A” consisted of 49 patients, group “B” - 40 patients. In 9 (18.4%) patients of group “A” a complete clinical response was diagnosed in the follow-up survey, which was the reason for abstinence from surgical treatment and they were taken for dynamic observa- tion. In 9 of 40 (22.5%) operated patients from group “A” there was noted a clinically significant complete morphologi- cal response in tumor (T0N0). In the control group “B” no complete clinical response was achieved in any patient. A complete morphological response in tumor was recorded in 5 of 40 (12.5%) (T0N0) operated patients. A 2-year recurrence- free survival in group “A” was 91.4%, in group B - 70.1%. Locoregional relapses, after treatment in group “A”, were not currently registered, in group “B” this indicator was 2.5%. The frequency of distant metastasis in the study groups was 2.1% and 7.5%, respectively. The average life expectancy was 13.1 months. Preliminary results confirmed strengthening of anti- cancer effect of consolidating CT after prolonged CRT, which was manifested in an increase in the frequency of complete clinical and morphological regression of tumor and, accord- ingly, an improvement of long-term results. A complete clinical response, achieved in every fifth patient, allowed refraining from a disabling operation and saved a quality of life.
MICROBIOLOGICAL MONITORING OF PURULENT COMPLICATIONS IN CANCER PATIENTS
Authors: Khokhlova Olga , Alabusheva A. , Kapshuk D. , Yeremeeva O. , Sergeeva V. , Dykhno Yuriy , Yeremina Yekaterina , Potkina Nadezhda , Modestov Arseniy , Bobrova Olga , Peryanova Olga , Ямамото Т.
Published: November 2020

Infectious complications in cancer patients are an important public health problem. The purpose of the work is microbiological monitoring of purulent complications in cancer patients for the period 2003-2015. 4209 specimens from oncological patients were examined. The bacteriological method of investigation and PCR were used. It was established that gramnegative microflora occupied one of the leading places in the occurrence of purulent complications. A significant role was played by non-fermenting gram-negative pathogens - 32.8% of the total number of clinically significant strains. The main pathogens were characterized by a high degree of resistance to antimicrobial drugs - the proportion of MDR was 23.33%, XDR - 28.33%. The main mechanism of resistance in enterobacteria was the production of beta-lactamase of extended action (81.0%) including in K.pneumoniae (87.5%), E.coli (60.0%). During the follow-up period the number of methicillin -resistant strains increased significantly: MRSA - up to 52.5%, MRSE - up to 72.0%.
ROLE OF MITOCHONDRIAL NO-SYNTHASE IN THE IMPLEMENTATION OF ANTITUMOR EFFECTS OF POLYUNSATURATED FATTY ACIDS IN THE MODEL OF GUERIN’S CARCINOMA UNDER IN VIVO CONDITIONS
Authors: Marchenko Mikhail , Shmarakov Igor , Ketsa O.
Published: November 2020

NO-synthase activity and NO level in the mitochondrial fraction of rats Guerin’s carcinoma under conditions of different ю-3 and ю-6 polyunsaturated fatty acids (PUFAs) supplementation has been investigated. Guerin’s carcinoma was used as a cancer model. 0.5 ml of 30% carcinoma cell suspension in normal saline was implanted subcutaneously into thigh of a hind leg. The intensity of tumor growth was evaluated based on measurements of subcutaneous tumor size and coefficient of tumor mass. It was showed that ω-3 PUFAs supplementation before and after transplantation of Guerin’s carcinoma resulted in the decreases of tumor growth and coefficient of tumor mass in an organism. Additional ю-6 PUFA supplementation can stimulate tumor progression and increase tumor mass in body in the logarithmic phases of carcinogenesis as compared to the tumor-bearing rats. The effect depends on duration of ю-3 and ю-6 PUFAs administration and on the level of preliminary provision of an organism with these PUFAs. We found increased NO-synthase activity and NO content in mitochondrial fraction of Guerin’s carcinoma in animals of the group that was administered ю-3 PUFAs both before and post-implantation of the carcinoma during logarithmic phase of carcinogenesis. At the same time, the ю-6 PUFA administration does not contribute to significant changes in the NO-synthase system components in the mitochondrial fraction of Guerin’s carcinoma in comparison with the tumor-bearing rats.
FIRST RESULTS OF LAPAROSCOPIC PRESSURIZED INTRAPERITONEAL AEROSOL CHEMOTHERAPY (PIPAC) IN TREATMENT FOR PERITONEAL CARCINOMATOSIS IN PATIENTS WITH GASTRIC CANCER
Authors: Zakharenko Aleksandr , Vovin Kirill , Kupenskaya Tatyana , Rybalchenko Vitaliy , Natkha Aleksandr , Ten Oleg , Zaytsev Danila , Trushin Anton , Belyaev Mikhail , Bagnenko Sergey
Published: November 2020

The results of treatment of gastric cancer with peritoneal dissemination are not very comforting. The average life expectancy of patients after diagnosis is less than 6 months. Methods of systemic treatment are ineffective. The most effective strategy is regional treatment, a special place in recent years has taken intraperitoneal chemotherapy with low-dose Cisplatin and Doxorubicin administered as a pressurized aerosol (PIPAC). This article presents the analysis of the first results of treatment of patients with gastric cancer with peritoneal carcinomatosis, which was used PIPAC at conventional regimens (standard for this technique, low-dose cytostatics, exposure time and intraperitoneal pressure) and in the experimentally developed effective regimen. The developed PIPAC regimen proposed by the authors proved its safety and objectively more effective than the standard for such parameters as objective tumor response, histological response and overall survival of patients. The study will be continued to obtain statistically reliable results.
INDUCTION THERAPY AND METHODS OF PREVENTING THE DEVELOPMENT OF BRONCHOPLEURAL FISTULA IN LOCALLY ADVANCED FORMS OF NON-SMALL CELL LUNG CANCER
Authors: Yergnyan Stepan , Levchenko Yevgeniy , Kubekov I.
Published: November 2020

This review is devoted to the urgent problem of modern oncology - combined treatment of locally advanced lung cancer with neoadjuvant chemotherapy, chemoradiation, targeted therapy. Literature data on the influence of various variants of neoadjuvant therapy on the development of postoperative bronchopleural complications, risk factors, methods of their prevention are analyzed in detail. The role of primary and secondary plastics of the stump of the main bronchus, tracheobronchial anastomoses with various autoflaps is highlighted. The article analyzes the data of large meta-analyzes and works originating from specialized clinics dealing with this problem.
CYTOLOGICAL DIAGNOSIS AS A METHOD OF SCREENING OF PRE-MALIGNANT MELANOCYTIC TUMORS AND EARLY FORMS OF SKIN MELANOMA
Authors: Novik Viktor , Dreval D.
Published: November 2020

Cytohistological comparisons to the account of the clinical data and revision of cytological and histological preparations on a material received from 21 patients are made. Cytomorphological features of juvenile nevi (Spitz-nevus, Reed-nevus), dysplastic and atypical nevi and early forms of melanoma are described. The establishment at cytological examination of good-quality character of melanocytic defeats at the account of the clinical data could be the basis for appointment laser therapy. At revealing of atypical melanocytes in cytological preparations patients should be referred to specialized oncological institutions for surgical excision of tumor with the subsequent histological examination. Thus cytological examination could be used in dermatological practice as a method of screening pre-malignant melanocytic tumors and skin melanoma.
Royaumont’s aftermath in Iceland – Motion geometry, transformations and groups
Authors: Bjarnadóttir Kristín
Published: November 2020

In the Meran Program in 1905 and at the Royaumont Seminar in 1959, among the main themes were transformation geometry, including motion geometry, and group theory. Those themes entered some Danish mathematics textbooks and the English School Mathematics Project’s textbook series, both used in Iceland around 1970. One of the arguments for including group theory in school mathematics was that its structure corresponded to structures in the minds of children. Eventually, the emphasis on motion in geometry subordinated the structure of the transformation groups. These ideas proved short-lived in Iceland, they coincided with a great expansion of the school system, students were unaccustomed to studying textbooks in English, available teachers were not receptive, and mathematical analysis was considered neglected. In later applications, geometric transformations have become the basis of a large industry: animations in motion pictures and games. Keywords: motion geometry, transformation, group theory, School Mathematics Project
Actors in the changes of ICMI: Heinrich Behnke and Hans Freudenthal
Authors: Furinghetti Fulvia , Giacardi Livia , Menghini Marta
Published: November 2020

The years after WWII up to the late 1960s were crucial in the evolution of ICMI (International Commission on Mathematical Instruction) for both the settlement of some institutional aspects (mainly concerning the relationship with mathematicians) and the establishment of new trends of the activities. By referring to unpublished documents, this paper focuses on the role of two key figures in those years: Heinrich Behnke and Hans Freudenthal. As ICMI Secretary and later as President, Behnke tried to reshape the newborn ICMI after WWII and clarify the relationship with mathematicians. His action was completed by Freudenthal, who, as ICMI President, broke with the past and promoted initiatives that fostered the development of mathematics education as an academic field and the independence of ICMI from the community of mathematicians. Keywords: history, ICMI, mathematicians, mathematics education
Back to the future – a journey from current education reforms to reformations in the past
Authors: Weiss Yvette
Published: November 2020

Learning from history does not automatically mean that history prevents us from repeating mistakes. We cannot see what happens in the future, even with the most profound knowledge of the past. Although it is not possible to make such causal connections, the study of structural components, which recur and make up patterns, can certainly contribute to sharpening political judgement. How can the teaching of the history of mathematics education then help to support an understanding of possible courses of individual actions without indoctrination through the political or even ideologically influenced production of time references? The paper presents the concept of a lecture course in mathematics education, held at the University of Mainz. We take as a point of departure the everyday experience of our prospective mathematics teacher with various current education reforms and present seemingly similar processes during former reforms. Here we limit ourselves to reforms during the 19th and 20th century.
The pedagogical aim of recreational mathematics’ mechanical puzzles at the end of the 19th century in France
Authors: Rougetet Lisa
Published: November 2020

This contribution is presented within the scope of a historical reflection on the place and the role of recreational mathematics in mathematics education at the end of the 19th century in France, focusing on a specific form of mathematical recreation: the Baguenaudier. The history of this mechanical puzzle, along with its resolution through mathematical tools – in particular the binary system –, reveals the pedagogical interests of the use of mathematical recreations in education. This last aspect was fully accepted in France in the 1880s, for instance with the French mathematician and author of mathematical recreations Édouard Lucas who highlighted the relevance of certain scientific games to teach and practice arithmetic. Keywords: recreational mathematics, Baguenaudier, 19th century France, binary system
PENGEMBANGAN SISTEM ABSENSI ONLINE BERBASIS WEB MENGGUNAKAN MAPS JAVASRIPTS API
Authors: Manu Gerlan Apriandy , Benufinit Yonly Adrianus
Published: November 2020

Tujuan dari penelitian ini untuk membuat rancang bangun sistem absensi online dengan menggunakan Maps Javascripts API yang dapat menampilkan laporan absensi dalam bentuk peta. Aplikasi Absensi digunakan untuk mendata karyawan, mencatat kehadiran karyawan, mencari data karyawan, dan membuat pelaporan presensi kehadiran karyawan pada rentang waktu tertentu. Terdapat beberapa mesin fingerprint yang dapat digunakan dengan mudah dan telah dilengkapi dengan aplikasi manajemen absensi. Kelemahan penggunaan mesin fingerprint ini adalah absensi hanya bisa dilakukan pada lokasi mesin fingerprint tersebut berada. Dengan adanya Work Form Home (WFH) absensi dengan menggunakan mesin fingerprint menjadi tidak efektif untuk digunakan. Absensi Online menjadi solusi terbaik untuk dapat mencatat kehadiran karyawan pada lokasi dimana saja. Pada penelitian ini dikembangkan suatu Sistem Absensi Online berbasis Web dengan menggunakan metode Rapid Application Development (RAD). Penggunaan Maps Javascripts API pada Sistem Absensi Online dapat berfungsi merekam data latitude dan longitude dari perangkat yang digunakan karyawan saat melakukan absensi online.
First inland record of Bull shark Carcharhinus leucas (Müller & Henle, 1839) (Carcharhiniformes: Carcharhinidae) in Celebes, Indonesia
Authors: Hasan Veryl , Islam Izzul
Published: November 2020

A single specimen (c. 86.2 cm) juvenile of Bull shark Carcharhinus leucas (Müller & Henle, 1839) was captured and photographed by local fisherman using a casting net on 13 February 2018 in Pangkajene River, about 16 km inland, Pangkajene District, South Celebes, Indonesia. This finding is considered as a first inland record of C. leucas in Celebes, and fourth inland records in Indonesia after Papua, Sumatra and Borneo. Monitoring is needed to asses the possibility of Celebes as a migration route and breeding ground of C. leucas.
Gossypetin Derivatives are also Putative Inhibitors of SARS-COV 2: Results of a Computational Study
Authors: Giguet-Valard Anna-Gaelle , Raguette Kevin , Morin Stephanie , Bellance Remi , Ravin Juliette Smith
Published: November 2020

SARS-CoV-2 is the third most highly virulent human coronavirus of the 21st century. It is linked with fatal respiratory illness. Currently, there are still no effective treatments of Covid-19. Among many drugs evaluated, few have proven conclusive clinical efficacy. Furthermore, the spread of the disease mandates that ideal medications against Covid-19 be cheap and available worldwide. Therefore, there is a rationale to evaluate whether treatments of natural origin from aromatic and medicinal plants have the ability to prevent and/or treat COVID-19. We evaluated in this study the inhibition of COVID-19 protease by natural plants compounds such as Gossypetin-3'-O-glucoside (G3'G). G3'G has been isolated from the petals of Talipariti elatum Sw. found almost exclusively in Martinique. It has no crystallography or modelisation studies. Antifungal and antioxidant properties are already published. We study its binding affinity so potential inhibition capability against SARS-CoV2 3CLpro mean protease as compared to other previously tested natural or pharmacological molecules by molecular docking. We propose Gossypetin derivatives as good tropical natural compounds candidate that should be further investigated to prevent or treat COVID19.
EL SERVICIO AL CLIENTE COMO FILOSOFÍA Y FACTOR DE CALIDAD DE LAS PYMES DEL CANTÓN LA LIBERTAD.
Authors: Vera Campuzano Nury , Castillo Vera Dennise Castillo Vera , Collins Ventura Nathyn , Carrera Endara Fernando
Published: November 2020

Resumen: El presente estudio responde a la evaluación del servicio al cliente y su incidencia en la gestión de calidad de las Pymes del cantón La Libertad, como medio para superar las expectativas del mercado meta, y que permita fortalecer fidelidad de los clientes. En un entorno competitivo las empresas sin importar su índole deben emplear acciones estratégicas que permitan mejorar sus resultados organizacionales, por lo tanto, mejorar continuamente el servicio al cliente se ha convertido en un factor clave para alcanzar los objetivos organizacionales, debido que permite crear interés en el mercado meta, mantener a los clientes actuales, y alcanzar un posicionamiento positivo en el target, de esta manera contribuye a las empresas uno de los estándares de calidad necesarios para ser considera una empresa sostenible y competitiva. La metodología utilizada está basada en método inductivo a través de entrevistas realizadas a los gerentes de Pymes del cantón La Libertad dedicadas al sector comercial, por otro lado, la aplicación método deductivo mediante encuestas a los integrantes de la organización, con el fin de evaluar las acciones estratégicas que emplean para alcanzar la satisfacción de los clientes. El modelo de gestión de calidad basado en el servicio al cliente busca fortalecer las acciones administrativas que realizan las empresas, mediante bases sólidas, 2 y oportunas, por ende, se ha estructurado un modelo en base a cinco factores: gestión de recursos, medición y análisis, innovación continua del producto, y desarrollo de recursos humanos; que al aplicarse ambos se alcanza se fortalece el desempeño organizacional.
Peningkatan Kecerdasan Terhadap Kinerja SDM Dengan IT Sebagai Variabel Moderating
Authors: A'yun Annisa Qurrota
Published: November 2020

This study aims to analyze the influence of intellectual, emotional, spiritual intelligence on HR performance with IT being moderate in an agency. The discussion of the importance of the influence of IT with intelligence to improve HR performance has been widely discussed in several literature studies. Although there are many other factors that affect the performance of primary schools, this study only discusses the existence of trust and commitment as determinants of HR performance. Data obtained from 63 respondents using a questionnaire. Data analysis using SPSS 17 shows that the performance of human resources in the agency can be improved by paying attention to the intelligence level of employees towards the agency. Intellectual, emotional, spiritual intelligence with IT as moderate have a positive and significant effect on HR performance.
Entrepreneurial Marketing dan Trust Terhadap Marketing Performance
Authors: Liliyan Aditya
Published: November 2020

The purpose of this research is to determine the level of entrepreneurial marketing and trust carried out by SMEs and to contribute to literature and conceptual models on the effect of entrepreneurial marketing and trust on marketing performance. The sample in this study were SMEs in the handicraft sector in Rembang, Central Java. The number of samples studied was 200 samples. The sampling technique used purposive sampling. The sample criteria are SMEs that have been running a business for at least 3 (three) years. This is because in measuring the dimensions of marketing performance there are several indicators of the level of achievement of marketing performance each year, at least for a minimum of 3 years it can be seen the marketing performance of these SMEs. Data analysis using multiple regression modeling. The results show that entrepreneurial marketing has a significant effect on marketing performance, trust has a significant effect on marketing performance, entrepreneurial marketing and trust simultaneously have a significant effect on marketing performance.
Corporate Governance dan Keputusan Pendanaan
Authors: Yasmin Annisa , Fitdiarini Noorlaily
Published: November 2020

This research aims to examine the influence of corporate governance on financing decisions or capital structures on manufacturing companies listed on the Indonesia Stock Exchange for the period 2008-2010. In this study, corporate governance was projected with board size, independent commissioner, managerial ownership, and institutional ownership, while funding decisions were projected with debt ratio. The technique used to test the influence of corporate governance on capital structures is using multiple linear regression analysis. The results found that board size and board composition have a significant negative effect on the capital structure, while managerial ownership, and institutional ownership do not have a significant influence on the capital structure.
The Role of Leadership and Influence on Employee Performance in Digital Era
Authors: Iskamto Dedi
Published: November 2020

This research is a quantitative discretive research. According to Sugiono (2010), quantitative descriptions are research by drawing a conclusion from the data tabulated in the form of frequency distribution tables. The location of this research is at PT Mitra Beton Mandiri (MBM), Pekanbaru Riau City. The sample sample is 67 people. The results showed bbased on the total average value of the leadership recapitulation results, it is known that the respondent's response to the statement on the leadership variable is agree with the average value of 3.95%. From these data it can be seen that the leadership is good. Based on the average value of the performance recapitulation results, it is known that the respondent's response to the statement on the performance variable is in agreement with the average value of 4.00%. From these data it can be concluded that the employee's performance is good. Based on the results of the recapitulation of the leadership variable with the lowest average score for the tenth question with an average score of 3.83, which is for the achievement orientation indicator. Based on the results of the recapitulation of performance variables with the lowest average score for the eleventh question with an average score of 3.90, namely for the Communication indicator.
Two-epoch Orbit Estimation for Wide Binaries Resolved in Hipparcos and Gaia
Authors: Makarov Valeri V.
Published: November 2020

The Hipparcos catalog and its Double and Multiple System Annex (DMSA) lists 4099 components with individual proper motions and coordinates on the epoch 1991.25. Many of these long-period binary stars are also present in Gaia Data Release 2 (DR2). Using the available relative positions and proper motions separated by 24.25 yr, the equations of relative orbital motion can be solved for the two epoch eccentric anomalies, orbital period, and eccentricity. This method employs elimination of the linear Thiele–Innes unknowns and nonlinear optimization of the remaining condition equations. The quality of these solutions is compromised by the insufficient condition and modest precision of the Hipparcos astrometric data, as revealed by Monte Carlo simulations with artificially perturbed data points. The presence of multiple systems and optical pairs can also perturb the results. Limited experiments with artificial data indicate that useful estimates can be obtained with a 25 yr epoch difference for wide binaries with orbital periods up to ∼500 yr. The prospects of this method dramatically improve with the proposed next-generation space astrometry missions such as Gaia-NIR and Theia, especially when additional conditions are included from astrometric or spectroscopic measurements. An ancillary catalog of cross-identification and astrometric information for 1295 double-star pairs cross-matched in Gaia DR2 and Hipparcos is also published.
A Closer Look at Exoplanet Occurrence Rates: Considering the Multiplicity of Stars without Detected Planets
Authors: Savel Arjun B. , Dressing Courtney D. , Hirsch Lea A. , Ciardi David R. , Fleming Jordan P. C. , Giacalone Steven A. , Mayo Andrew W. , Christiansen Jessie L.
Published: November 2020

One core goal of the Kepler mission was to determine the frequency of Earth-like planets that orbit Sun-like stars. Accurately estimating this planet occurrence rate requires both a well-vetted list of planets and a clear understanding of the stars searched for planets. Previous ground-based follow-up observations have, through a variety of methods, sought to improve our knowledge of stars that are known to host planets. Kepler targets without detected planets, however, have not been subjected to the same intensity of follow-up observations. In this paper, we constrain better the stellar multiplicity for stars around which Kepler could have theoretically detected a transiting Earth-sized planet in the habitable zone. We subsequently aim to improve estimates of the exoplanet search completeness—the fraction of exoplanets that were detected by Kepler—with our analysis. By obtaining adaptive optics observations of 71 Kepler target stars from the Shane 3 m telescope at Lick Observatory, we detected 14 candidate stellar companions within 4″ of 13 target stars. Of these 14 candidate stellar companions, we determine through multiple independent methods that 3 are likely to be bound to their corresponding target star. We then assess the impact of our observations on exoplanet occurrence rate calculations, finding an increase in occurrence of 6% (0.9σ) for various estimates of the frequency of Earth-like planets and an increase of 26% (4.5σ) for super-Earths and sub-Neptunes. These occurrence increases are not entirely commensurate with theoretical predictions, though this discrepancy may be due to differences in the treatment of stellar binarity.
Beyond Equilibrium Temperature: How the Atmosphere/Interior Connection Affects the Onset of Methane, Ammonia, and Clouds in Warm Transiting Giant Planets
Authors: Fortney Jonathan J. , Visscher Channon , Marley Mark S. , Hood Callie E. , Line Michael R. , Thorngren Daniel P. , Freedman Richard S. , Lupu Roxana
Published: November 2020

The atmospheric pressure–temperature profiles for transiting giant planets cross a range of chemical transitions. Here we show that the particular shapes of these irradiated profiles for warm giant planets below ∼1300 K lead to striking differences in the behavior of nonequilibrium chemistry compared to brown dwarfs of similar temperatures. Our particular focus is H2O, CO, CH4, CO2, and NH3 in Jupiter- and Neptune-class planets. We show that the cooling history of a planet, which depends most significantly on planetary mass and age, can have a dominant effect on abundances in the visible atmosphere, often swamping trends one might expect based on T
eq alone. The onset of detectable CH4 in spectra can be delayed to lower T
eq for some planets compared to equilibrium, or pushed to higher T
eq. The detectability of NH3 is typically enhanced compared to equilibrium expectations, which is opposite to the brown dwarf case. We find that both CH4 and NH3 can become detectable at around the same T
eq (at T
eq values that vary with mass and metallicity), whereas these “onset” temperatures are widely spaced for brown dwarfs. We suggest observational strategies to search for atmospheric trends and stress that nonequilibrium chemistry and clouds can serve as probes of atmospheric physics. As examples of atmospheric complexity, we assess three Neptune-class planets, GJ 436b, GJ 3470b, and WASP-107, all around T
eq = 700 K. Tidal heating due to eccentricity damping in all three planets heats the deep atmosphere by thousands of degrees and may explain the absence of CH4 in these cool atmospheres. Atmospheric abundances must be interpreted in the context of physical characteristics of the planet.
Biases and Cosmic Variance in Molecular Gas Abundance Measurements at High Redshift
Authors: Keenan Ryan P. , Marrone Daniel P. , Keating Garrett K.
Published: November 2020

Recent deep millimeter-wave surveys have attempted to measure the carbon monoxide (CO) luminosity function and mean molecular gas density through blind detections of CO emission lines. While the cosmic star formation rate density is now constrained in fields of hundreds of square arcminutes or more, molecular gas studies have been limited to ≤50 arcmin2. These small fields result in significant biases that have not been accounted for in published results. To quantify these biases, we assign CO luminosities to halos in cosmological simulations to produce mock observations for a range of field sizes. We find that fields of ≲10 arcmin2 alter the recovered shape of the luminosity function, causing underestimates of the number of bright objects. Our models suggest that current surveys are sensitive enough to detect sources responsible for approximately half of the cosmic molecular gas density at high redshift. However, uncertainties in the gas density measurement are large, and cosmic variance may double the uncertainty claimed in these surveys. As a result, the field size needed to detect redshift evolution in the molecular gas at high confidence may be more than one order of magnitude larger than what current surveys have achieved. Shot power intensity mapping measurements are particularly sensitive to Poisson variance and require yet larger areas to constrain the gas density or its evolution. We provide a simple prescription for approximating uncertainty in total CO emission as a function of survey area and redshift for both direct detection and intensity mapping surveys.