bluuebunny/crossref_metadata_2025 huggingface dataset:
DEBT EQUITY AND SHARE PRICE PERFORMANCE OF MANUFACTURING COMPANIES LISTED IN NIGERIA
Authors:   Babcock University, Ilishan Remo Ogun State, Nigeria., a Oladunjoye , O. Olawale. ,   Babcock University, Ilishan Remo Ogun State, Nigeria., b Ogbebor ,   Babcock University, Ilishan Remo Ogun State, Nigeria., I. Peter. ,   Babcock University, Ilishan Remo Ogun State, Nigeria., Y.S.A Alalade ,   Babcock University, Ilishan Remo Ogun State, Nigeria.
Published: August 2021

This study examined the impact of debt equity ratio on the share price performance of manufacturing firms listed in Nigeria between 2010 and 2019. The study adoptedan ex-post facto research design. A sample size of fifteen (15) listed manufacturing firms was used while panel regression models estimated using fixed effect model and random effect model, while the result of the Hausman test was utilized to select the appropriate model between fixed effect model and random effect model.The findings of the study reveals that the total debt to equity ratio is negative and significant influence on performance of share price {Coef. = -0.009 P-value > 0.05}. Return on Assets is also seen to be positive and significantly influence the performance of share price of listed manufacturing firm in Nigeria {Coef = 2.428 P-value = 0.000}. However, Size of firm {Coef. = -0.019 P-value = 0.344} is seen to have negative but insignificant effect on the performance of share price. The study therefore recommended that firm manager should cautious while using debt finance. Firm manager should consider the consequences of debt finance before making capital structure decision. They are supported to identify the optimum debt level and ensure that they are no use excessive amount of debt in capital structure.
ISSUES AND CHALLENGES ON DEVELOPING AND PROMOTING RAMAYANA TRAIL TOURISM IN SRI LANKA
Authors:   University College of Ratmalane-University of Vocational Technology., Premarathna U.A.D. , Arachchi R.S.S.W. ,   Sabaragamuwa University of Sri Lanka.
Published: August 2021

This study has been conducted related to the Ramayana tourism concept in Sri Lanka. Sri Lanka Tourism Promotion Bureau has launched the Ramayanaya Trail with the private sector to target the top-ranked Indian market over to Sri Lanka for religious reasons and other travel purposes. With the literature shreds of evidence by Ramayana epic Sri Lanka has significant cultural value on Ramayana trail with more than 50 relevant sites. With the findings of previous studies related to the Ramayana trail in the Sri Lankan context and surveys by local travel agents, there is no considerable popularity for the Ramayana trails sites among Indian tourists who visited Sri Lanka. Thus, the study has focused on developing and promoting issues of Ramayana tourism in the Sri Lankan context. The study was conducted under the qualitative approach to achieve the research objective to identify the issues and challenges of developing and promoting Ramayana trail as a cultural tourism product in Sri Lanka under the case study research design by considering Ramayana tourism in Sri Lanka as a case. The qualitative interview method was conducted by the snowball sampling method among Sri Lanka Tourism Promotion Bureau and 20 local tour operators and filed observations in 11 Ramayana sites in Sri Lanka were done as the primary data collection. Core issues and challenges have been identified under two categories as site-based and organizational-based.
THE STUDY OF PHYSICOCHEMICAL CHARACTERISTICS IN TREE BARK OF ACACIA NILOTICA L. WITH REFERENCE TO AIR POLLUTION AT INDORE, MADHYA PRADESH, INDIA
Authors:   Department of Botany Compfeeders Aisect College of Professional Studies, Indore, M. P., India., Trivedi Priya , Sainkhediya Jeetendra ,   Department of Botany Govt.PG College Sendhwa Dist. Barwani, Madhya Pradesh, India., Muwel Sukhalal ,   Department of Botany Govt. PG Bhagat Singh College, Jaora (M.P.), India.
Published: August 2021

The atmosphere might seem limitless but about 95% of the air is contaminated with first 12 -15 KM above the earth surface. The quality of the air gets deteriorated as a result of emissions of contaminants from all the mans activities including energy generation, manufacturing of goods and disposal of waste. Thus, to evaluate the effect of Air pollution on physicochemical characteristics a comparative study was undertaken in tree bark of Acacia nilotica L. with reference to different pollution area of Indore city. The result showed the variation in pH values which was recorded from 4.7 to 6.9. The lowest pH 5.0 was found at MPA and VPA in rainy season.Electrical conductivity was higher at all pollution areas. Highest value of electrical conductivity was recorded at VPA in rainy season 297.3 Âµmohs/cm2.While maximum % increase over LPA was seen in summer season at polluted area.
PAULO FREIRE E GESTÃO DEMOCRÁTICA: APROXIMAÇÕES EPISTEMOLÓGICAS E FORMATIVAS
Authors: Soares Guimarães Rodrigues Rodrigo , De Araújo Silva Luana Rosa
Published: August 2021

Este artigo faz uso de dados de uma pesquisa de doutorado com foco no percurso histórico da gestão democrática no Brasil, buscando aproximações epistemológicas com a obra do educador brasileiro Paulo Freire (1921-1997). Teve-se como métodos de pesquisa a análise documental dos instrumentos legais que normatizam esta concepção de gestão no país e a revisão bibliográfica da literatura sobre o tema, bem como da obra do autor. Buscou-se identificar nos referenciais compatibilização de conceitos, constatando-se convergências entre princípios desta gestão, com pressupostos da obra de Freire.
Heteroannulation Reaction of α-Aminoketones for the Efficient Synthesis of 4-Imidazolin-2-ones and 2-Thiones
Authors: Rebollar Araceli , Bautista Rafael , Gutiérrez Rsuini , Espinoza‑Hicks Carlos , Mendieta Aarón , Zárate-Zárate Daniel , Martínez-Mora Eder , Labarrios-Morán Ehecatl , Vázquez Miguel , Delgado Francisco , Tamariz Joaquín
Published: August 2021

The hydrogenation of α-oximinoketones in methanol/HCl afforded α-aminoketones, which were applied without purification to the synthesis of 4-imidazolin-2-ones and 2-thiones, including chiral derivatives. The latter two series were obtained in high yields by a heteroannulation reaction of α-aminoketones with isocyanates and isothiocyanates, respectively. A double condensation of the α-aminoketones with two mol equivalents of the isocyanates produced a series of 4,5-dialkylN,3-diaryl-2-oxo-2,3-dihydro-1H-imidazole-1-carboxamides. With isothiocyanates, a single condensation reaction furnished a series of 4,5-dialkyl-1-aryl-1H-imidazole-2(3H)-thiones, which underwent alkylation with alkyl halides to form the corresponding 1-aryl-2-thioalkyl-1H-imidazoles in high yields.
Information about Dagestan in the Arabic Geographical Work Kitab al-a’lak an-nafisa of Ibn Rusta
Authors: Gizbulaev Magomed A.
Published: August 2021

The article provides information on the history of Dagestan in the 10th century on the basis of translation, commentary and comparative analysis of excerpts from the Arabic geographical work Kitab al-a’lak an-nafisa (Book of Precious Gems) by Abu ‘Ali Aḥmad ibn ‘Umar ibn Rusta who lived and wrote in Isfahan at the turn of the IX–X centuries about the history of the peoples of the Caucasus. As for information on Dagestan, Ibn Rusta’s work contains more information than Ibn Khordadbekh’s and Ibn Faqih’s works. In his work, Ibn Rusta adopts the ancient Greek theory of the division of the inhabited parts of the Earth into seven climates, for example, he places the region in question in the sixth and seventh climates. Ibn Rusta’s data on the geography and ethnography of northeastern Europe, as well as the political formations in the Caucasus, are unique and significantly supplement the author’s predecessors. The parts dedicated to Sarir, which gained its regional hegemony in the X century, are of particular importance. The author of the current article compares several reports on Dagestan from Ibn Rusta’s work with Ibn Khordadbekh’s Kitab al-masalik wa-l-mamalik and Ibn Faqih’s Kitab al-Buldan in order to determine whether the origin of the material is the same for these authors. As a result, only one passage was found that overlapped with the work of Ibn Khordadbekh. Also, it is noted that N. A. Karaulov’s translation contains interpretative flaws and some fragments from Ibn Rusta’s work are missing. The scientific significance of this article is determined by the fact that its materials can be used in further source studies in writing the medieval history of the Caucasus.
Myth therapy. Notes on collective traumatology
Authors:   St. Petersburg State University, Brodsky Alexander I.
Published: August 2021

The article analyzes the mechanisms for the formation of social myths, as well as their functions pertaining to collective trauma, and puts forward three theses. Firstly, the characteristics which turn text into myth depend not on its formal or essential features, but rather on its perception (how the audience interprets the meaning of its constituent statements). Anything can become a myth. Usually, a myth consists of depictions, statements, and explanations, that is, descriptive utterances. However, to understand a myth is to know the preconditions not for the truth and/or falsity of its constituent statements, but instead the implementation of certain rules of conduct. A myth is a description interpreted as a prescription. This approach makes it possible to understand how various scientific or philosophical theories, initially aiming to describe and explain the world, turn into myths determining the social behaviour of the masses. Secondly, a myth turns descriptions into prescriptions through “storytelling”. A myth is a narrative which inevitably uses certain tropes essential for all narratives. The form of the narrative makes it possible to establish a pseudo-logical connection between various “elementary statements” capturing real or fictional events. Without such a connection, there is no value and, therefore, no normative perception of these events. Thirdly, the transformation of a description or explanation of a traumatic event into imperatives is the most important form of the therapy of collective consciousness. A description of a traumatic event turning into a call for action and construction of a new reality presents perhaps the only way to get rid of the destructive consequences of psychological trauma, both at the collective and individual level.
History of Russian philosophy at Leningrad-Petersburg university
Authors:   St. Petersburg State University, Osipov Igor D.
Published: August 2021

The article analyzes the features of the establishment of Russian philosophy as an academic discipline at Leningrad-Petersburg University. In this regard, the work deals with the methodological principles and guidelines for courses in the history of Russian philosophy by professors P. F. Nikandrov and A. A. Galaktionov, ideological and philosophical foundations of their study guides, and the novelty of their approach to studying Russian philosophy. It is emphasized that this stage of the study of Russian philosophy at the Leningrad University can be characterized as critical; it made it possible to study in detail the concepts of many previously unknown thinkers to the general reader. The article examines the specificity of teaching Russian philosophy at the Department of the History of Russian Philosophy chaired by professor Alexandr F. Zamaleev. The conceptual frameworks that formed the basis of the new educational research paradigm are revealed. They were based on a comprehensive analysis of Russian philosophy in the context of the development of Russian spiritual culture, which made it possible to identify certain theoretical features in Russian philosophy: anthropologism, moralism, historicism, epistemological realism, etc. Significant attention in the article is given to the analysis of the methodology for the course “Political Thought in Russia” at St. Petersburg University, its structure and basic methodological guidelines are determined. It is argued that teaching Russian political thought was based on taking into account the traditions of statehood and political consciousness that developed in Russian society. The conclusion is made that in the process of the formation of Russian philosophy as a scientific and academic discipline at Leningrad-Petersburg University, objective difficulties arose in rethinking the methodology of historical and philosophical science as well as developing a new paradigm of socio-humanitarian and philosophical knowledge.
Digital humanities and development of the biographical method
Authors:   St. Petersburg State University, Artamoshkina Ludmila E. , Morawski Karol ,   Karkonosze State University of Applied Sciences, Prokudin Dmitry E. ,   St. Petersburg State University
Published: August 2021

The article deals with the methodological foundations of the biographical method in the context of digital humanities. The bidirectional character of biography leads us to the problem’s methodological level: social predicament of the individual world and reciprocal determinability of the social world by the individual world. The biographical method is closely linked to thematization of subjectivity. The biographical method’ s methodological problems are connected with context, reference, authenticity, and reflexivity. The authors link the biographical method with memory studies and emphasize that the turn to memory is associated with many theoretical questions and controversies related to the status of history as a science and its relation to the field of human memory. The multidirectional biography studies reveal the lack of a conceptual apparatus, common for the interdisciplinary space of humanities, which allows to develop the criteria for comparability of scientific research results. The authors associate the further development of the biographical method with the development of the modern information society. They note the prospects of using the methods of digital humanities associated with the search, selection and analysis of texts presented in digital form. The rationale for this thesis is that at present there is a constant increase of electronic texts that can be used both for the development of the biographical method and serve as its empirical base. The article demonstrates the possibility of applying the biographical method using the tools of digital humanities on the examples of research on the history of science, which are part of the world’s cultural heritage.
The thinning physicality of an artifact
Authors:   V. I. Vernadsky Crimean Federal University, Shorkin Alex D.
Published: August 2021

The article compares two versions of the development of cultural studies. In the first (wide) version, culture is traditionally understood as the whole artificially created “second nature”. According to the second, currently prevailing narrow version, the subject of cultural studies is the mental (ideational) aspects of cultures; the physicality of artifacts is supplanted to the periphery of research. A narrow interpretation of culture leads to a number of conceptual flaws and thematic gaps. The prospects of cultural studies are seen by the author in the advantages of a broad interpretation of culture. A model of the morphology of culture is proposed, which includes the frontier, discursive practices, and core values. Three types of artifacts form the frontier of culture on its border with the external environment (nature and other cultures): artificial things, modified organisms and social institutions. The nomenclature of discursive practices that make it possible to build a frontier includes knowledge, technology, and norms. Their historical and cultural configurations undergo significant metamorphoses. A special function of intergenerational translation of cultural achievements is performed by enculturation technologies. The values of cultures are presented, first of all, by symbols. In addition, they are transferred and rebuilt by simulacra, which are capable of performing both destructive and creative functions. Symbols promote following traditions and, simulacra — enriching or changing them. Symbols and simulacra direct the dynamics of cultures. To describe the dynamics of cultures, it is advisable to use the synergistic concept of persistent and transmutation attractors. In persistent attractors, cultures are delicately adapted to external challenges they are accustomed to. A drastic change in challenges pushes culture into one of two transmutation attractors, where it either perishes or gets a chance to become a civilization.
Science and Agribusiness in the History of Pig Factory Farming in Ontario
Authors: Mundstock Xavier de Carvalho Miguel
Published: August 2021

The article explores some of the connections between science and agribusiness in the history of pig factory farming in Ontario, Canada, between the 1950s and the present. The factory farm model of pig production submits animals to a very artificial way of life, which would not be possible without the inputs of scientific and technological innovations of the 20th century. Topics discussed include the use of antibiotics, swine nutrition, feed conversion (in)efficiency, and pork promotion and consumption. The primary sources utilized are a trade magazine, a census of agriculture, and other government and industry publications. The article sheds light on how notions such as “progress”, “improvement”, “modern” or “efficiency”, frequently used by scientists when referring to results of pig production, are restricted to narrow or internal considerations of the industry that, in turn, can be challenged by broader analysis of aspects (social, economic, environmental) of the food system. Scientists have not just produced scientific knowledge but in some cases have also promoted ideologies about animals and the food system. These ideologies of “progress”, “improvement”, “modern” or “efficiency”, as in the context of pig production in Ontario, only make sense if we understand the particular historical moment in the analysis, which since the 1950s has markedly been one of strong agribusiness interventionism.
“Espero que el SNI haya valido la pena”. Tensiones, negociaciones y rupturas entre mujeres científicas y sus parejas
Authors: Castañeda Rentería Liliana Ibeth , Contreras Tinoco Karla Alejandra
Published: August 2021

En este trabajo se analizan las experiencias de conciliación entre la vida laboral y vida la familiar de mujeres científicas que laboran en una institución de educación superior. En particular, se exponen los datos referentes a negociaciones, ganancias, tensiones y conflictos de estas mujeres con sus parejas. Se trata de un estudio cualitativo en el que se hicieron 21 entrevistas a científicas miembros del Sistema Nacional de Investigadores de la Universidad de Guadalajara. Los resultados muestran que las mujeres demandan explícitamente y luchan por la participación activa de sus parejas en la crianza de los hijos y en las actividades domésticas. En algunos casos se producen rupturas, tensiones y pérdidas de pareja en pro de la defensa del proyecto académico individual. Asimismo, el trabajo remunerado ha permitido a algunas mujeres reposicionarse y ocupar un lugar de mayor reconocimiento y valía frente a la pareja. En términos generales, se concluye que las mujeres académicas son agentes activos que buscan una participación activa en el ámbito privado de sus parejas.
Human Serum Albumin Nanoparticles as a Carrier for On-Demand
Sorafenib Delivery
Authors: Cusano Angela Maria , Ruvo Menotti , Caputo Tania Mariastella , Aliberti Anna , Cusano Andrea
Published: August 2021

Background:

Drug delivery systems based on Human Serum Albumin (HSA) have been
widely investigated due to their capability to interact with several molecules together with their nontoxicity,
non-immunogenicity and biocompatibility. Sorafenib (SOR) is a kinase inhibitor used as the firstline
treatment in hepatic cancer. However, because of its several intrinsic drawbacks (low solubility and
bioavailability), there is a growing need for discovering new carriers able to overcome the current limitations.

Objective:

To study HSA particles loaded with SOR as a thermal responsive drug delivery system.

Method:

A detailed spectroscopy analysis of the HSA and SOR interaction in solution was carried out
in order to characterize the temperature dependence of the complex. Based on this study, the synthesis
of HSA particles loaded with SOR was optimized. Particles were characterized by Dynamic Light Scattering,
Atomic Force Microscopy and by spectrofluorometer. Encapsulation efficiency and in vitro drug
release were quantified by RP-HPLC.

Results:

HSA particles were monodispersed in size (≈ 200 nm); encapsulation efficiency ranged from
25% to 58%. Drug release studies that were performed at 37 °C and 50 °C showed that HS5 particles
achieved a drug release of 0.430 μM in 72 hours at 50 °C in PBS buffer, accomplishing a 4.6-fold overall
SOR release enhancement following a temperature increase from 37 °C to 50 °C.

Conclusion:

The system herein presented has the potential to exert a therapeutic action (in the nM
range) triggering a sustained temperature-controllable release of relevant drugs.
Impact of RET Screening on the Management of Multiple Endocrine Neoplasia
Type 2A: 10 Years Experience and Follow-Up in Three Families
Authors: Wang Yue-Ping , Li Fei-Ping , Wang Hui-Hong , Fang Xu-Dong , Zhu Zai-Sheng , Chen Yong-Liang , Qi Xiao-Ping
Published: August 2021

Background:

Multiple endocrine neoplasia type 2A (MEN 2A) is mainly caused by
germline RET codon C634 mutation and is characterized by Medullary Thyroid Carcinoma
(MTC), pheochromocytoma (PHEO), and hyperparathyroidism (HPTH). The early diagnosis and
initial normative treatment are helpful for the long-term outcome of MEN2A.

Methods:

Three index cases and their 29 relatives from three families with MEN2A were included
in this study. Genetic screening was performed on all participants. Demographic, clinical profiles,
tumor histopathologic features, and follow-up records were systematically analyzed.

Results:

In total, RET C634Y mutation was identified in 10 individuals (10/32, 31.3%). Among
them, 5 presented with MTC symptoms, whereas the other 5 did not show apparent clinical manifestation,
and all were subjected to thyroidectomy with varying neck dissection. Compared to individuals
in the former, the latter benefited greatly from RET screening with significantly younger
age at diagnosis of MTC and surgery (18.1 ± 13.8 years vs. 39.0 ± 14.1 years, P =0.045), and lessaggressive
MTC behavior (size: 0.74 vs. 2.82 cm, P =0.026; LN+/resected: 20.0% vs. 100.0%, P
=0.048) and also lower recurrence rate of MTC (20.0% vs. 100.0%, P =0.048). The PHEO was
identified in 6 of the 10 carriers (60.0%), and all had undergone adrenal-sparing surgery. During
the 10 years of follow-up, one (16.7%) developed recurrence of PHEO.

Conclusion:

Integrated RET screening, serum calcitonin, and plasma metanephrine/ normetanephrine
levels can facilitate the early diagnosis and standardized MTC/PHEO surgery to improve
the prognosis of MEN2A. Laparoscopic adrenal-sparing surgery prior to the bilateral total
thyroidectomy is a preferred surgical approach for PHEO.
KONSEP GUGATAN PEMERINTAH ATAS PENCEMARAN LINGKUNGAN: KOMPARASI ANTARA INDONESIA DAN AMERIKA SERIKAT
Authors: Jonaidi Dona , Wibisana Andri
Published: August 2021

In recent years, the Minister of Environment and Forestry (MoEF) has intensified the use of its rights to sue for environmental damage. In most of the lawsuits, the courts have ruled in favor of the MoEF. Surprisingly, hitherto no restoration has taken place in areas where the MoEF’s claims for damages have been granted. Based on conceptual and comparative approaches, this research addresses the restoration of environmental damage in the United States of America and Indonesia. This article finds some problems with the restoration of environmental damage in Indonesia, such as the absence of a Recovery Plan, the use of theoretical damage valuation methods, and the absence of full compensation measures. This article also proposes some recommendations to improve the implementation of the government’s right to sue in Indonesia.
Effects of multi-level job demands on academic leaders' health impairment process and in-role performance among Malaysian research universities
Authors:   Department of Education Management, Planning and Policy, Faculty of Education, University of Malaya, Kuala Lumpur, Malaysia, et al. Graizi
Published: August 2021

This study's primary purpose was to investigate the effects of job demands on in-role performance through the health impairment process among academic leaders at Malaysian Research Universities (MRU)s. The focus was given to both groups' levels (faculties) and individuals' levels (educational leaders). Data were collected via a five-point Likert scale questionnaire emailed to 252 academics at 31 different faculties. Data analysis by utilizing Hierarchical Linear Modeling (HLM) revealed that while the health impairment process is negatively related to in-role performance, job demands from both individuals and group levels are positively associated with the impairment path. By applying the "Monte Carlo Mediation Test; MCMT" in the mediating pathways, the results revealed that the mediation affects academics' impairment health among the relation of individual/group demands and academic leaders' in-role performance. This research indicates that individual conditions influence academic performance, and the group's shared perception has a substantial role. In turn, decision-makers would gain a comprehensive understanding of potential factors that may impact educational leaders' well-being and performance and strive to improve them in a way that develops MRUs.
Грибовидная меза-структура для лавинных фотодиодов на гетероструктурах InAlAs/InGaAs
Authors: Малеев Н.А. , Кузьменков А.Г. , Кулагина М.М. , Васильев А.П. , Блохин С.А. , Трошков С.И. , Нащекин А.В. , Бобров М.А. , Блохин А.А. , Воропаев К.О. , Бугров В.Е. , Устинов В.М.
Published: August 2021

Mushroom mesa structure for InAlAs/InGaAs avalanche photodiodes (APD) was proposed and investigated. APD heterostructrures were grown by molecular-beam epitaxy. Fabricated APDs with sensitive area diameter of about 30 micron were passivated by SiN deposition and demonstrate avalanche breakdown voltage Vbr ~ 70-80 V. At applied bias of 0.9 Vbr the dark current was ~ 75-200 nA. The single-mode coupled APDs demonstrate responsivity at a gain of unity is high than 0.5A/W at 1550 nm.
Исследование влияния вида молниеотвода на спектр электромагнитных помех на антенне под моделью носового обтекателя самолета с использованием искусственной грозовой ячейки
Authors: Темников А.Г. , Черненский Л.Л. , Орлов А.В. , Лысов Н.Ю. , Белова О.С. , Ковалев Д.И. , Кившар Т.К.
Published: August 2021

The results of physical modeling of the influence of solid and segment lightning diverter strips on the spectrum of electromagnetic interference on the antenna under the model of the nose radome of the aircraft under the influence of an artificial thunderstorm cell are presented. It is shown that the use of segment lightning diverter strips leads to the appearance of signals with frequencies up to units of gigahertz in the spectrum on the antenna. The connection between the spectrum of signals on the antenna and the spectral characteristics of current pulses on the lightning diverter strip is established. The influence of discharges along the radome surface and between the segments on the electromagnetic spectrum is revealed interference on the antenna under the radome.
Authors’ Responses to Peer Reviews of “Utility of the ROX Index in Predicting Intubation for Patients With COVID-19–Related Hypoxemic Respiratory Failure Receiving High-Flow Nasal Therapy: Retrospective Cohort Study” (Preprint)
Authors: Patel Maulin , Chowdhury Junad , Mills Nicole , Marron Robert , Gangemi Andrew , Dorey-Stein Zachariah , Yousef Ibraheem , Zheng Matthew , Tragesser Lauren , Giurintano Julie , Gupta Rohit , Rali Parth , D'Alonzo Gilbert , Zhao Huaqing , Patlakh Nicole , Marchetti Nathaniel , Criner Gerard , Gordon Matthew
Published: August 2021

UNSTRUCTURED

These are author responses to peer review.
Klasifikasi Aktivitas Manusia Menggunakan Extreme Learning Machine dan Seleksi Fitur Information Gain
Authors: Fitra A. Bachtiar  , Fajar Pradana  , Issa Arwani
Published: August 2021

Pengenalan aktivitas manusia dalam kehidupan sehari-hari dapat memberikan manfaat yang cukup besar. Akan tetapi, penelitian terkait pengenalan aktivitas manusia masih menghadapi beberapa permasalahan, yaitu pengambilan data yang bersifat unobtrusive, banyaknya fitur yang digunakan dalam pemodelan, dan pengunaan algoritme pemodelan untuk mengenali aktivitas manusia. Hal tersebut akan berdampak pada hasil penelitian dan hasil klasifikasi dari algoritme yang diusulkan. Pada makalah ini, dilakukan studi awal klasifikasi aktivitas manusia. Pengenalan aktivitas manusia dilakukan untuk memprediksi lima aktivitas manusia, yaitu berjalan, naik tangga, turun tangga, duduk, dan berdiri. Data yang digunakan adalah data sekunder dengan jumlah 1.500 baris data dan 561 fitur. Seleksi fitur dilakukan terlebih dahulu menggunakan Information Gain dengan pemilihan fitur menggunakan pendekatan persentil. Subset dari data tersebut kemudian dinormalisasi dan diklasifikasi menggunakan ELM. Parameter berupa jumlah hidden neuron optimum pada model ELM dicari terlebih dahulu untuk dapat menghasilkan nilai akurasi yang tinggi. Hasil seleksi fitur yang didapatkan yaitu sejumlah 420 subset fitur terbaik. Parameter sejumlah 100 hidden neuron menghasilkan akurasi tertinggi untuk pengenalan aktivitas manusia. Hasil pemodelan menggunakan ELM memperoleh akurasi, presisi, recall, dan F1-score sebesar 0,85.
Perancangan Kontrol Pelacakan Lintasan untuk Robot Otonom Bergerak Beroda dengan Penggerak Diferensial
Authors: Stephen I.C. Gulo  , Tua Tamba
Published: August 2021

Robot bergerak beroda dengan penggerak diferensial (DDWMR) merupakan salah satu jenis robot bergerak yang telah digunakan di berbagai aplikasi karena kemampuan mobilitasnya. Salah satu isu penting dalam desain DDWMR adalah terkait penentuan metode kontrol untuk memastikan DDWMR tersebut dapat berpindah secara otonom dari satu pose awal menuju pose akhir tertentu. Tantangan utama pada isu tersebut adalah perlunya merancang pengontrol yang mampu mengatasi batasan non-holonomic pada pergerakan DDWMR. Untuk menjawab tantangan tersebut, makalah ini mengajukan suatu metode kontrol yang menggabungkan teknik perancangan lintasan halus dan teknik kontrol pelacakan lintasan berbasis analisis kestabilan Lyapunov. Pada metode yang diajukan, lintasan referensi berbentuk fungsi polinomial terlebih dahulu dirancang untuk menghubungkan pose awal dan akhir DDWMR yang diinginkan berdasarkan informasi titik jalan (waypoints) di antara keduanya. Sinyal kontrol umpan balik berbasis metode kestabilan Lyapunov kemudian dirancang untuk mengontrol DDWMR dalam mengikuti lintasan referensi yang diperoleh dengan error pelacakan seminimal mungkin. Hasil simulasi numerik ditunjukkan untuk mengilustrasikan keandalan metode kontrol yang diusulkan.
Regresi Linear untuk Mengurangi Bias Sistem Penilaian Uraian Singkat
Authors: Silmi Fauziati  , Adhistya Erna Permanasari  , Indriana Hidayah  , Eko Wahyu Nugroho  , Bobby Rian Dewangga
Published: August 2021

Makalah ini bertujuan untuk memperbaiki kinerja sistem penilaian tes uraian singkat. Perbaikan kinerja tersebut dilakukan dengan menambahkan regresi linear sederhana pada keluaran gabungan metode cosine similarity (dengan pembobotan frekuensi kata berbasis metode Term Frequency-Inverse Document Frequency (TF-IDF)) dan mekanisme pencocokan kata. Regresi linear dilakukan dengan menjadikan nilai uraian singkat (hasil cosine similarity dan pencocokan kata) sebagai variabel regressor. Untuk mengetahui efektivitas sistem penilaian yang diusulkan, diukur kinerja sistem penilaian relatif terhadap nilai manual yang dilakukan oleh dosen. Diperoleh bahwa sebelum dilakukan regresi linear, sistem penilaian cenderung mengeluarkan nilai lebih tinggi (nilai mengalami bias) dibandingkan nilai manual yang dilakukan dosen. Regresi linear memperbaiki kinerja sistem penilaian tersebut dengan mengurangi bias penilaian secara signifikan, yaitu nilai yang diberikan tidak cenderung lebih tinggi maupun lebih rendah daripada nilai manual oleh dosen. Bahwa bias penilaian dapat diturunkan secara signifikan dengan metode yang sederhana, yaitu regresi linear, diharapkan dapat memberikan kontribusi terhadap akselerasi proses penerapan sistem penilaian otomatis untuk tes uraian pada teknologi pembelajaran dalam jaringan seperti e-learning.
The Use of the Partner Surveillance Scale in Instagram: Psychometric Evaluation Based on the Graded Response Model
Authors: Suryadi Bambang , Putra Muhammad Dwirifqi Kharisma
Published: August 2021

The use of social media, especially Instagram, has become an increasingly powerful form of daily activity. This social media affects the romantic relationship of people, where people in relationships can conduct surveillance on the behaviors of their partner. This study provides an analysis of the psychometric properties of the Indonesian version of the Partner Surveillance Scale which contains 15 items and used a 4-point Likert scale format. The study recruited 214 female university students aged 17-23 years old, who used Instagram. The Graded Response Model (GRM) method was applied. As a result, the Indonesian version of the Partner Surveillance Scale was proved to have good psychometrics properties and had good fit to the GRM. All assumptions of GRM were met and the scale had high reliability. But, it should be noted that some items did not fit well with the model.  The results of this study also provide an alternative to the use of Confirmatory Factor Analysis (CFA) in analyzing polytomous data with GRM. This study concluded that the psychometric properties of the Partner Surveillance Scale were good.
Epistemología del lenguaje: algunos paradigmas explican el fenómeno
Authors: Ferreira Edna Maria de Oliveira , Vitorino César Costa , Samudio Sady Carolina Gayoso
Published: August 2021

RESUMEN

Es indiscutible el valor y la importancia del lenguaje como elemento de socialización entre los humanos. El lenguaje fomenta la cultura, o sea, es la base de la cultura en la sociedad. Este artículo objetiva sintetizar el trayecto hecho para que el lenguaje fuera considerado una ciencia, desde las teorías dualistas hasta las teorías lingüísticas contemporáneas, evidenciando posicionamientos filosóficos en cada perspectiva y sus contribuciones para que los estudios del lenguaje lograsen el status actual. Una pesquisa bibliográfica permitió una apreciación de los tres modelos más significativos para el entendimiento del lenguaje ydel sentido: el realismo; el mentalismo y el pragmatismo. Se constató que el lenguaje despierta la atención desde los sofistas y de los filósofos griegos, aunque haya divergencias entre ellos, pues el lugar de la esencia para Aristóteles es el alma y para Platón, la esencia está en lo real. Pero para ambos, las palabras, reales o mentales, son esencias. Por lo tanto, se puede entender que las contribuciones para la comprensión del lenguaje y sentido advenidas del pensamiento más antiguo surgen justamente de la tensión entre elesencialismo y el relativismo; y estas discusiones todavía están presentes en la contemporaneidad, a partir de Wittgenstein, Russel, Frege, Habermas, Foucault, Derrida y resultan en los estudios actuales sobre el lenguaje, como la teoría de la enunciación, de los actos de habla, del análisis del discurso, y otras áreas que hacen interface con el lenguaje. Martins (2005), Santaella (2016), Fiorin (2oo4, 2017) y Demolin y Storto (2017), entre otros teóricos, respaldaron la argumentación en este texto.

Palabras-clave: Epistemología. Lenguaje. Sentido. Conocimiento.
La democracia representativa y sus retos
Authors: González Ulloa Aguirre Pablo Armando
Published: August 2021

La democracia representativa está contantemente en crisis, por lo que se analiza si realmente hay un retroceso en el mundo y América Latina a través de varios estudios. Al final, el reto es hacer que las instituciones propias de la democracia funcionen de manera correcta y se incorporen formas de representación más eficientes. Ante democracias de baja intensidad, es fundamental crear capacidades institucionales del Estado, para renovar los canales de participación, crear una mejor rendición de cuentas política y fomentar una mayor participación de los ciudadanos en la toma de decisiones
Malathion Biodegradation by L. casei (NRRL1922) and L. acidophilus (NRRL 23431) in Fermented Skimmed Milk
Authors: El-Abd Shaimaa Basyouni Hassan , Abu-Shady Hala Mohamed , Elshebiny Hosam Abdel Fattah Mohamed , Ebrahim Mohamed Abdel-Azim Abdel-Aziz , Sayed Hayam Abdelnabi
Published: August 2021

The aim of this study was to investigate and trace the biodegradation products of the pesticide malathion in a comparative manner by two different lactobacilli strains; L. casei (NRRL1922) and L. acidophilus (NRRL 23431). The two strains were cultivated separately into skimmed milk supplemented with 5 ng/ml malathion. After incubation under the appropriate conditions, randomized samples were taken at intervals 24, 48, 72 and 120 hours along with control samples and analyzed for the presence of malathion and its degradation products by the GC-MS spectrometry; As well as, analyzed to record the level of phosphatase enzyme which suggested to be involved in the biodegradation process. The results showed a high ability of the two tested strains to degrade malathion with a superiority of L. acidophilus (NRRL 23431) over L. casei (NRRL 1922). The level of phosphatase enzyme was elevated in both strains in the presence of malathion and decreased gradually upon the depletion of malathion from the sample, which reflects the role of the phosphatase enzyme in the biodegradation process.
Phenotypic and Genotypic Detection of Extended-spectrum β-lactamase production by Klebsiella pneumoniae Isolated from Different Clinical Samples in Baghdad, Iraq
Authors: Samanje Jaleel , Mohammed Ahmed S. , Al-Hamami Maitham S.S.
Published: August 2021

The present study was conducted for the phenotyping of antibiotic resistance patterns among patients infected with Klebsiella pneumoniae, isolated from different clinical sites of the patients admitted to the Medical City Teaching Laboratories in Baghdad, Iraq, and to study the frequencies of the blaCTX-M, blaTEM, and blaOXA genes in the extended-spectrum b-lactamase (ESBL)-producing isolates. A total of 20 out of 35 (57.14%) K. pneumoniae isolates collected from different clinical samples were identified as ESBL producers using the combination disk test (CDT) against six types of antibiotics, as suggested by the Clinical and Laboratory Standards Institute. All K. pneumoniae isolates were observed for ESBL positivity using the CDT method and screened for blaTEM, blaCTX-M, and blaOXA genes by PCR using a specific primer. In total, 19/20 (95.0%) ESBL-positive isolates harbored the TEM genes, 18/20 (90.0%) carried CTX-M, while the blaOXA gene, for the first time in Baghdad city, was not reported in any of the isolates. A high occurrence of ESBL-producing K. pneumoniae was observed in our study based on the analysis of the TEM and CTX-M genes. Although molecular methods are more reliable in identifying ESBL production, routine clinical screening for ESBL-producing K. pneumoniae by phenotypic methods, such as CDT tests, must be introduced and encouraged in clinical settings because of its low cost.
Use of Solar Panel in Design of Footpath
Authors: Kore Ganesh
Published: August 2021

Abstract: Solar footpath is a series of solar panel interlink to each other The outer layer of solar panel is covered with mild steel(MS). The tempered glass is attached to mild steel fabrication. Glass is tempered is such a way that it can bear up to 1 ton of load, various test are taken on glass like 1) ball drop test, 2) fragmentation test 3) light transmission test. Lithium battery is used to store the energy produce form the solar panel. The plus point of this design is that even if few panels get damage due to natural calamity other panel will still continue producing energy. Keywords: Photovoltaic cell, Tempered glass, Solar footpath
Image Captioning using CNN and LSTM
Authors: Banda Anish
Published: August 2021

Abstract: In the model we proposed, we examine the deep neural networks-based image caption generation technique. We give image as input to the model, the technique give output in three different forms i.e., sentence in three different languages describing the image, mp3 audio file and an image file is also generated. In this model, we use the techniques of both computer vision and natural language processing. We are aiming to develop a model using the techniques of Convolutional Neural Network (CNN) and Long Short-Term Memory (LSTM) to build a model to generate a Caption. Target image is compared with the training images, we have a large dataset containing the training images, this is done by convolutional neural network. This model generates a decent description utilizing the trained data. To extract features from images we need encoder, we use CNN as encoder. To decode the description of image generated we use LSTM. To evaluate the accuracy of generated caption we use BLEU metric algorithm. It grades the quality of content generated. Performance is calculated by the standard calculation matrices. Keywords: CNN, RNN, LSTM, BLEU score, encoder, decoder, captions, image description.
ANADOLU SERAMİK SANATINDA MİTOLOJİK KAYNAKLI EJDERHA FİGÜRÜNÜN KULLANIMI VE GÜNÜMÜZ SERAMİK SANATINA YANSIMALARI
Authors: SAVAŞ Fulya
Published: August 2021

Mitoloji, tarihin kültür bütünlüğünü, yaşanılan geçmişin ritüellerini tasvirler ve sembolleşmiş hikâyeler aracılığıyla günümüze aktarmaktadır. Medeniyetlerin kültürel uzantısı olan mitolojiye ulaşılmada sanat yapıtlarında görülen figüratif dekorlar, geçmişimizi yansıtan tarihi bir belge niteliğini taşımaktadır. Bu yapıtlarda uygulanan figürler; geleneklerin tanınması ve uygarlıkların inançları hakkında bizlere yol gösterici olmaktadır. Bu figürler arasında yer alan efsanevi ejderha figürleri Anadolu seramik sanatında önemli yer teşkil etmektedir. Uzak doğu kökenli, insanları ve yapıları kötülüklerden koruduğuna inanılan güç ve kudrete sahip, ejderha motifinin var olmaya başladığı dönem itibariyle, seramik dekor unsuru olarak örnekleri, Anadolu Selçuklu seramik yüzeyler üzerinde görülmüştür. Bu yüzeylerde görülen ejderha figürünün tipik özelliği ; düğümlü, düğümsüz, ağzı açık, sivri dişli, kulakları dik, gözleri badem biçiminde olmasıdır. Eski inançlara göre bereket, kuvvet, gibi unsurlar ile özdeşleştirilen ejderha figürlerine yer, su, gök öğeleriyle birlikte farklı anlamlar yüklenmiştir. Geleneksel Türk seramik sanatında yer alan ejderha figürleri, farklılık getiren dekor, teknik anlayışı ile günümüz çağdaş seramik sanatında ulusal ve uluslararası seramik sanatçılarının eserlerine ilham kaynağı olmuştur. Bu makalede; mitolojik kaynaklı ejderha figürünü gelenekselleşmiş sembollerden farklı bir biçimde ele alan ve yorumlayan seramik sanatçılarının çalışmaları incelenmiştir. Türk kültüründe önemli bir belge niteliği taşıyan ve çoğu öyküye konu olmuş bu figürlerin çağdaş bir anlayış ile nasıl ele alındıkları irdelenmiştir.
Comparative analysis of the economic feasibility of using ultra-small spacecrafts
Authors: Nazarova Yulia A. , Tikhonov Vladimir A.
Published: August 2021

The relevance of the issue under consideration is associated with the evolution of existing technologies, due to which the functionality increases and the mass of the payload decreases, as a result of which the question of the use of cost-effective launch vehicles is raised. The purpose of this work is to carry out a comparative analysis of the feasibility of using ultra-light launch vehicles to provide services for the delivery of small spacecraft to low-earth orbit. The article is written within the framework of socio-economic research methods. Retrospective analysis and comparative approach are combined with the use of quantitative methods. The theoretical significance of the study consists in the analysis of the modern operation of small spacecraft and the state of the world rocket and space industry, analysis of the existing strategy of the State Corporation Roscosmos in the development of a new line of reusable launch vehicles and consideration of promising projects of domestic private companies involved in the creation of ultra-light launch vehicles. The practical significance lies in the possibility of using the results of studying the intensity of space launches when making strategic decisions on the use of ultra-light launch vehicles. Based on the assessment of existing forecasts for the development and creation of small-sized spacecraft, it is concluded that the world space market is interested in the types of satellites and classes of launch vehicles for their launch.
Pseudospheric shells in the construction
Authors: Gil-oulbé Mathieu , Ndomilep Ipel Junior Alphonse , Ngandu Prosper
Published: August 2021

The architects working with the shell use well-established geometry forms, which make up about 5-10 % of the number of known surfaces, in their projects. However, there is such a well-known surface of rotation, which from the 19th century to the present is very popular among mathematicians-geometers, but it is practically unknown to architects and designers, there are no examples of its use in the construction industry. This is a pseudosphere surface. For a pseudospherical surface with a pseudosphere rib radius, the Gaussian curvature at all points equals the constant negative number. The pseudosphere, or the surface of the Beltram, is generated by the rotation of the tracersis, evolvent of the chain line. The article provides an overview of known methods of calculation of pseudospherical shells and explores the strain-stress state of thin shells of revolution with close geometry parameters to identify optimal forms. As noted earlier, no examples of the use of the surface of the pseudosphere in the construction industry have been found in the scientific and technical literature. Only Kenneth Becher presented examples of pseudospheres implemented in nature: a gypsum model of the pseudosphere made by V. Martin Schilling at the end of the 19th century.
Implementation and Evaluation of a Team-Based Approach to Hospital Discharge Transition of Care
Authors: Van De Graaf Matthew , Patel Hemal , Sheehan Brynn , Ryal Jennifer
Published: August 2021

Background: Transitional care management (TCM) programs guide patients from hospital discharge to outpatient follow-up with the goal to decrease hospital readmissions and the cost of care. In 2017, the department of primary care internal medicine (PCIM) at Eastern Virginia Medical Group implemented TCM. We aimed to evaluate the efficacy and self-sustainability of this TCM program.
Methods: The TCM team contacted patients upon discharge to schedule the follow-up appointment. We coded patient contact as (1) no successful phone-call contact, patient did not attend appointment; (2) successful phone-call contact, patient did not attend appointment; and (3) patient attended appointment. We collected patient demographics, readmissions, and visit costs using manual chart review and electronic health record (EHR) data extraction. We conducted χ2 analysis, one-way analysis of variance, and unpaired t tests to assess associations between readmission rates or costs and TCM care.
Results: Initial analysis did not indicate significant associations between readmission rates and level of TCM care at 30 (χ2=1.40, P=.50), 60 (χ2=5.48, P=.06), or 90 (χ2=4.23, P=.12) days or significant differences in patient charges at 30 (F[2,59]=2.85, P=.06), 60 (F[2,91]=2.00, P=.14), or 90 (F[2,126]=1.39, P=.25) days. Follow-up analysis indicated significant associations between readmission rates and any level of TCM care at 60 (χ2=5.40, P=.02) and 90 (χ2=4.21, P=.04) days, but not at 30 days (χ2=1.39, P=.28).
Conclusions: Our TCM program review suggests that the benefits of transitional care extend beyond 30 days by decreasing readmission rates at 60 and 90 days after hospital discharge.