bluuebunny/crossref_metadata_2025 huggingface dataset:
Effects of harvester positioning errors on merchantable timber volume predicted and estimated from airborne laser scanner data in mature Norway spruce forests
Authors: Noordermeer Lennart , Næsset Erik , Gobakken Terje
Published: January 2022

Newly developed positioning systems in cut-to-length harvesters enable georeferencing of individual trees with submeter accuracy. Together with detailed tree measurements recorded during processing of the tree, georeferenced harvester data are emerging as a valuable tool for forest inventory. Previous studies have shown that harvester data can be linked to airborne laser scanner (ALS) data to estimate a range of forest attributes. However, there is little empirical evidence of the benefits of improved positioning accuracy of harvester data. The two objectives of this study were to (1) assess the accuracy of timber volume estimation using harvester data and ALS data acquired with different scanners over multiple years and (2) assess how harvester positioning errors affect merchantable timber volume predicted and estimated from ALS data. We used harvester data from 33 commercial logging operations, comprising 93 731 harvested stems georeferenced with sub-meter accuracy, as plot-level training data in an enhanced area-based inventory approach. By randomly altering the tree positions in Monte Carlo simulations, we assessed how prediction and estimation errors were influenced by different combinations of simulated positioning errors and grid cell sizes. We simulated positioning errors of 1, 2, â¦, 15 m and used grid cells of 100, 200, 300 and 400 m. Values of root mean square errors obtained for cell-level predictions of timber volume differed significantly for the different grid cell sizes. The use of larger grid cells resulted in a greater accuracy of timber volume predictions, which were also less affected by positioning errors. Accuracies of timber volume estimates at logging operation level decreased significantly with increasing levels of positioning error. The results highlight the benefit of accurate positioning of harvester data in forest inventory applications. Further, the results indicate that when estimating timber volume from ALS data and inaccurately positioned harvester data, larger grid cells are beneficial.2
Trafficking of women in Nigeria: causes, consequences and the way forward
Authors: Akor Linus Yusuf
Published: January 2022

The phenomenon of the trafficking of women, especially of young girls and women into exploitative sexual and commercial labor, has recently begun to attract local, national and international attention from world leaders, academics, the mass media, advocacy groups, the clergy and humanity in general. This is against the back drop of the fact that the trafficking of women has a number of far-reaching socio-economic, health and political consequences. Several factors, among them poverty, unemployment, ignorance and family size have been implicated as being reasons why women fall easy preys to the antics of traffickers. From available statistics, we can say that about 500,000 women are brought into the United States of America and Europe yearly for sexual and domestic servitude. Of the over 70,000 African victims of women trafficking, Nigerian women account for 70 percent of those trafficked to Italy alone. Fighting the menace requires a coordinated and concerted push from all stakeholders. This paper presents the causes and consequences of the trafficking of women from Nigeria to America and Europe. Empirical evidence indicates that the activities of traffickers, corrupt embassy officials, the country’s porous borders, poverty, refusal of victims to expose traffickers, delay in prosecuting apprehended culprits and biting youth unemployment have “conspired” to undermine the battle against the illicit trade. The paper makes far-reaching recommendations about how to mitigate the identified obstacles.
The Constitutional Premises of Subnational Self-Government in New Democracies
Authors: Blokker Paul
Published: January 2022

The paper discusses the significance and role of subnational democracy in the context of new European democracies in flux. In a context of fragile democratic traditions, the displacement of national sovereignty, and increasing civic adverseness to national politics, local forms of representative and direct democracy might – in advantageous circumstances – help to re-attach citizens to the democratic process. What is more, enhanced civic input into local and regional policy-making may enhance local capacities and strengthen forms of local cooperation. Subnational democracy might therefore work as a partial antidote to problems of European democracies, and in particular in the post-communist context. Local forms of democratic interaction have particular significance in the new democracies in that legacies of paternalism, hyper-centralized politics, socialist legality, and deeply engrained distrust towards politics tend to discourage democratic participation. Democracy on the local and regional levels is of a particularly intricate nature in that it is dependent on the way it is institutionalized and constitutionalized, and thus on legal guarantees of autonomy as well as on distinct values of self-government as communicated by constitutions. The paper will discuss the promises and problems of subnational democracy, and will subsequently briefly explore the constitutional premises of subnational self-government in the Czech Republic, Hungary, and Poland. The emerging picture shows both an increasing role for subnational self-government and significant hurdles to more widespread democracy on the local level.
Deconstructing social cohesion: towards an analytical framework for assessing social cohesion policies
Authors: Fenger Menno
Published: January 2022

Academics as well as policy-makers consider social cohesion as an important quality of cities. A high level of social cohesion is associated with a wide variety of positive characteristics of cities: for instance low crime rates, high economic growth, low unemployment and happy citizens. This has lead to a wide variety of policy initiatives explicitly or implicitly aimed at increasing social cohesion. The perceived importance remarkably contrasts with the lack of a clear definition and a widely agreed-upon analytical framework. The lack of conceptual consensus may be explained by the complexity of the concept. It has multiple dimensions and can be found on different institutional levels: from the level of states to the level of local neighbourhoods. In this article I develop an analytical framework that builds upon these multi-dimensional and multi-level characteristics and connect this with an attempt to classify policies aimed at increasing social cohesion.
Factors Affecting Initial Humoral Immune Response to SARS-CoV-2 Vaccines Among Patients With Inflammatory Bowel Diseases
Authors: Kappelman Michael D. , Weaver Kimberly N. , Zhang Xian , Dai Xiangfeng , Watkins Runa , Adler Jeremy , Dubinsky Marla C. , Kastl Arthur , Bousvaros Athos , Strople Jenifer A. , Cross Raymond K. , Higgins Peter D.R. , Ungaro Ryan C. , Bewtra Meenakshi , Bellaguarda Emanuelle A. , Farraye Francis A. , Boccieri Margie E. , Firestine A. , Chun Kelly Y. , Fernando Manory , Bastidas Monique , Zikry Michael , Long Millie D.
Published: January 2022

INTRODUCTION:

Although an additional coronavirus disease 2019 vaccine dose for immunocompromised persons has been recommended in some countries, further data to guide vaccination strategies for patients with inflammatory bowel disease (IBD) are urgently needed. We sought to identify factors affecting initial humoral immune response to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccines among patients with IBD.

METHODS:

In this prospective cohort of SARS-CoV-2 immunized patients with IBD, we evaluated associations between participant age, sex, vaccine type, medication use, and the presence of a detectable antireceptor binding domain antibody and quantitative antibody level.

RESULTS:

In total, 1,909 participants were included (1,123, 692, and 94 received BNT162b2, mRNA-1273, and Ad26.COV2.S, respectively) of whom 96% achieved a positive antibody response. On multivariable analysis, factors associated with lack of antibody response were older age (P = 0.043), BNT162b2 vs mRNA-1273 (odds ratio [OR] 2.1, 95% confidence interval [CI] 1.0–3.9), and combination therapy with anti-TNF and 6MP, azathioprine, or methotrexate (OR 4.2, 95% CI 2.4–7.3). The use of 5-aminosalicylate or sulfasalazine (OR 0.3, 95% CI 0.1–0.8) and ustekinumab (OR 0.2, 95% CI 0.05–0.8) was associated with decreased odds of lacking antibody response.

DISCUSSION:

Most patients with IBD mount an initial response to SARS-CoV-2 vaccination; however, older patients and those treated with anti-TNF and immunomodulator have blunted responses and may benefit the most from an additional vaccine dose. Patients treated with other classes of immunosuppressive medications have more robust initial immune responses to vaccination. These data should inform key decisions about patient selection for additional coronavirus disease 2019 vaccine doses in patients with IBD.
Full-Thickness Scar Resection After R1/Rx Excised T1 Colorectal Cancers as an Alternative to Completion Surgery
Authors: Gijsbers Kim M. , Laclé Miangela M. , Elias Sjoerd G. , Backes Yara , Bosman Joukje H. , van Berkel Annemarie M. , Boersma Femke , Boonstra Jurjen J. , Bos Philip R. , Dekker Patty A.T. , Didden Paul D. , Geesing Joost M.J. , Groen John N. , Haasnoot Krijn J.C. , Kessels Koen , van Lent Anja U.G. , van der Schee Lisa , Schrauwen Ruud W.M. , Schreuder Ramon-Michel , Schwartz Matthijs P. , Seerden Tom J. , Spanier Marcel B.W.M. , Terhaar Sive Droste Jochim S. , Tuynman Jurriaan B. , de Vos tot Nederveen Cappel Wouter H. , van Westreenen Erik H.L. , Wolfhagen Frank H.J. , Vleggaar Frank P. , ter Borg Frank , Moons Leon M.G. ,   on behalf of the Dutch T1 CRC Working Group
Published: January 2022

INTRODUCTION:

Local full-thickness resections of the scar (FTRS) after local excision of a T1 colorectal cancer (CRC) with uncertain resection margins is proposed as an alternative strategy to completion surgery (CS), provided that no local intramural residual cancer (LIRC) is found. However, a comparison on long-term oncological outcome between both strategies is missing.

METHODS:

A large cohort of patients with consecutive T1 CRC between 2000 and 2017 was used. Patients were selected if they underwent a macroscopically complete local excision of a T1 CRC but positive or unassessable (R1/Rx) resection margins at histology and without lymphovascular invasion or poor differentiation. Patients treated with CS or FTRS were compared on the presence of CRC recurrence, a 5-year overall survival, disease-free survival, and metastasis-free survival.

RESULTS:

Of 3,697 patients with a T1 CRC, 434 met the inclusion criteria (mean age 66 years, 61% men). Three hundred thirty-four patients underwent CS, and 100 patients underwent FTRS. The median follow-up period was 64 months. CRC recurrence was seen in 7 patients who underwent CS (2.2%, 95% CI 0.9%–4.6%) and in 8 patients who underwent FTRS (9.0%, 95% CI 3.9%–17.7%). Disease-free survival was lower in FTRS strategy (96.8% vs 89.9%, P = 0.019), but 5 of the 8 FTRS recurrences could be treated with salvage surgery. The metastasis-free survival (CS 96.8% vs FTRS 92.1%, P = 0.10) and overall survival (CS 95.6% vs FTRS 94.4%, P = 0.55) did not differ significantly between both strategies.

DISCUSSION:

FTRS after local excision of a T1 CRC with R1/Rx resection margins as a sole risk factor, followed by surveillance and salvage surgery in case of CRC recurrence, could be a valid alternative strategy to CS.
Qualitative Validation of a Novel VR Program for Irritable Bowel Syndrome: A VR1 Study
Authors: Spiegel Brennan M.R. , Liran Omer , Gale Rebecca , Khalil Carine , Makaroff Katherine , Chernoff Robert , Raber Tiffany , Chang Bianca , Pichetshote Nipaporn , Rezaie Ali
Published: January 2022

INTRODUCTION:

Although gut-directed psychotherapies are effective for irritable bowel syndrome (IBS), they are rarely prescribed, given a paucity of trained clinicians. Virtual reality (VR) offers a solution by allowing patients to self-practice these techniques in a standardized manner.

METHODS:

A multidisciplinary team developed IBS/VR, a program that transports users into immersive VR worlds that teach patients about the brain-gut axis, cognitive behavioral therapy, and gut-directed meditation. We tested IBS/VR in Rome IV IBS patients and used inductive analysis to evaluate perceptions and identify recommendations.

RESULTS:

We achieved thematic saturation after 9 interviews; 3 additional interviews revealed no emergent themes. After making 23 software changes based on patient feedback, we conducted 3 additional interviews which confirmed thematic saturation (N = 15 total).

DISCUSSION:

This study offers initial validation of the first VR program designed for IBS.
The use of radioactive substances in medicine — history and development prospects
Authors: Sheremeta M. S. , Trukhin A. A. , Korchagina M. O.
Published: January 2022

Nuclear medicine (NM) is a medical specialty that uses radionuclides (radioactive tracers) and ionising radiation for diagnostic and therapeutic (theranostic) purposes. Nuclear medicine arose and developed at the intersection of physics, chemistry and clinical medicine. The radiation emitted by radioisotopes can consist of gamma-, beta- and alpha emission, or it’s combination. Radioisotope of choice for medical purposes should have futher requirements: low radiotoxicity, suitable type of radiation, energy and half-life (several minutes to several hours and days), and also convenient detection of gamma ray radiation. The radionuclide is part of radiopharmaceutical (RP) and acts as its indicator. RP accumulates in morphological structures, becomes a carrier of coordinated information from patient to gamma camera or other equipment and reflects the dynamics of processes occurring in the examined organ. In 2021 NM celebrates its 80th anniversary. The trajectory of NM combines modern methods of radiotheranostics and applied genomic and post-genomic technologies.
Human resources problems of the endocrinological service and strategies for their solution
Authors: Pigarova E. A. , Vorotnikova S. Y.
Published: January 2022

The effectiveness of the healthcare system is largely determined by the staffing and qualifications of doctors. The human resources of the health care system is a critical aspect of the quality and accessibility of healthcare and the economy as a whole. Despite the existing staffing problems of the endocrinological service, the strengthening of the role of the state in solving this issue in the form of long-term planning of staffing, approaches to targeted training and distribution of specialists, as well as their material and social support, allows us to hope for the transition of positive dynamics into a confident resolution of the personnel crisis.
SOCIAL CAPITAL IN FISHERMEN LIVELIHOOD: CASE STUDY IN "KELOMPOK USAHA BERSAMA" (KUBE) KETAPANG, PANGKALPINANG, BANGKA
Authors: Wilujeng Panggio Restu , Saputra Putra Pratama , Rahman Bustami , Febriani Luna , Herdiyanti Herdiyanti , Hayati Laila
Published: January 2022

The empowerment of social community in a sustainable way becomes an unavoidable need, including within the fishermen community. As one of the economically marginalized social communities, the Fisherman community needs more serious attention from all related parties to create a join business group (Kelompok Usaha Bersama/KUBE) to improve their welfare. This article intends to find out how KUBE in Ketapang strengthen social capital in their groups as a strategy to increase the welfare of their members. This research was conducted using a qualitative approach through observation and in-depth interviews with 5 (five) fisherman informants as data collection techniques. The results showed that economic capital was not the main factor in increasing the empowerment of fishermen, but the social capital of KUBE group, such as networks, trust, and social bonds (bonding), have played a more important role in increasing the welfare of their members.Upaya untuk mengembangkan pemberdayaan kelompok sosial secara berkelanjutan saat ini menjadi suatu kebutuhan tak elakkan, termasuk dalam hal ini adalah kelompok nelayan. Sebagai salah satu kelompok sosial yang termarginalisasi secara ekonomi, kelompok ini membutuhkan intervensi dari berbagai pihak untuk meningkatkan kesejahteraannya. Salah satu strategi yang dilakukan oleh Kelompok Usaha Bersama (KUBE) di Ketapang, Pangkalpinang, Bangka adalah dengan memperkuat modal sosial dalam kelompok tersebut. Artikel ini bermaksud untuk mengetahui bagaimana upaya KUBE untuk menguatkan modal sosial di kelompok mereka sehingga mendorong para nelayan untuk menjadi lebih berdaya. Penelitian ini dilakukan dengan menggunakan pendekatan kualitatif dengan teknik pengumpulan data berupa observasi dan wawancara mendalam terhadap 5 (lima) orang informan nelayan anggota KUBE. Hasil penelitian menunjukkan bahwa modal ekonomi tidak menjadi faktor utama dalam meningkatkan keberdayaan nelayan, namun di kelompok KUBE ini modal sosial berupa jaringan, kepercayaan, dan ikatan sosial (bonding) memegang peranan yang lebih penting. Melalui kedua modal ini nelayan dapat saling membantu kebutuhan ekonomi satu sama lain, dan meningkatkan keberdayaan mereka dalam mencapai akses sumberdaya ekonomi yang lebih baik.
THE INFLUENCE OF COVID-19 INFORMATION ON WHATSAPP SOCIAL MEDIA TOWARDS COMMUNITY ANXIETY LEVEL
Authors: Lestari Puji , Adha Ikhsan Fauzi , Kusmantini Titik , Chandrasari Yuli
Published: January 2022

Many people in the Sorogenen Village and Mitra Griya Asri Housing communities are concerned about the COVID-19 information spread via the WhatsApp group social media. The goal of this study was to see how exposure to COVID-19 information on WhatsApp affected anxiety levels in the hamlet and housing communities, as well as to look at how exposure to COVID-19 information on WhatsApp affected anxiety levels in the communities. The Uses and Gratification Theory, Information Exposure Theory, Anxiety Theory, and Individual Difference Theory are all investigated in this study. The quantitative research method was applied, with each sample area consisting of 100 participants. All of the ideas employed in this study were evaluated on the designated population, according to the findings. The findings of the hypothesis 1 test show that the greater the exposure to COVID-19 information on WhatsApp, the higher the residents of Sorogenen Padukuhan's anxiety level. Hypothesis 2 was tested, claiming that the higher the level of exposure to COVID-19 information on WhatsApp social media, the higher the level of anxiety among Mitra Griya Asri Housing residents; and hypothesis 3 was tested, claiming that there is a difference in the effect of COVID-19 information on the people of the communities, but no difference in the level of anxiety among these residents. This research provides scientific contributions in the form of indicators of critical thinking to strengthen active audiences on Uses and Gratification Theory and intensity indicators on Information Exposure Theory.
WOMEN’S COMMODIFICATION ON TIKTOK: A SEMIOTIC STUDY OF “ELBOW STICKING' CHALLENGE
Authors: Rully Rully , Isbandi Fitri Susiswani , Utomo Ardian Setio , Khairiyah Ade Siti , Apriani Wulan
Published: January 2022

The use of social media has grown commonplace in today's culture. Every social media user now has a place to call their own in the digital age. Tiktok is one of the most popular and distinctive social media platforms, and it frequently abuses women through its many 'challenges' for content such as elbow sticking challange. This study takes a non-positivistic approach to the phenomena that occur in the society with a critical interpretive approach. Observations done in TikTok activities and engaging in interactions with TikTok users to be able to understand and uncover the commodification practices of women that occur in TikTok. This study revealed how intertextual the commodification of women in Tiktok was using a critical method that leverages Julia Kristeva's post-modern feminist outlook as a conceptual framework. The findings of this study reveal that the body, women, and culture are interwoven and produce meaning, which overrides earlier meanings by establishing new meanings that exploit Tiktok users, particularly women, which is consistent with media evolution, which also influences value meaning.
COLOR CONTROL OF THE DEVICE WITH LED TAPE ON THE VALUE OF TEMPERATURE AND HUMIDITY OF AIR
Authors: Kovalenko O. Yu. , Rybko M. D. , Mikaeva S. A. , Zhuravleva Yu. A.
Published: January 2022

The work is devoted to the development of a lighting device with control of the color of the LED strip depending on the value of temperature and humidity. To develop a prototype of a lighting installation, an A-Star 32U4 Micro microcontroller (analogue of Arduino Micro), 2 pieces of RGB tape of 5 and 10 cm each, a DHT11 temperature and humidity sensor, connecting wires, a case were purchased. The A-Star 32U4 Micro microcontroller used in the proposed setup is a universal programmable module based on the ATmega32U4 AVR microcontroller from Microchip (formerly Atmel), which has 32KB flash memory, 2.5KB RAM, and builtin USB functionality. A voltage regulator and power selection circuitry allows the board to be powered from either USB or an external 5.5V to 15V supply, while a resettable PTC fuse on the USB VBUS power supply and reverse protection on the VIN help protect it from accidental damage. In the course of the work, studies were carried out on the operation of the installation under normal conditions and at low and high temperatures.
RADIAL EXTRUSION OF A PIPE BILLET WITH INTERNAL LEDGE. METHODS FOR CALCULATING THE TECHNOLOGICAL PARAMETERS OF EXTRUSION OF PRODUCTS WITH DIFFERENT RADII OF THE UPPER AND LOWER PARTS
Authors: Vorontsov A. L. , Reshchikov E. O.
Published: January 2022

The scientifically grounded methods for calculating the main technological parameters of the internal radial extrusion of a pipe billet in order to obtain products with different radii of the upper and lower parts. All formulas are given that are necessary to determine the force of the process, the maximum stresses acting on various form-forming elements of the stamp, to determine the accumulated deformations at any points of the resulting product, and also to take into account the hardening of the extruded material.
Filmar-se, Sendo: O tempo narrativo presente em documentários autobiográficos
Authors: Kitofi Tonelo Gabriel
Published: January 2022

Este artigo aborda como a noção de um presente narrativo se transpõe de maneira própria em documentários de teor autobiográfico e pessoal. Filmes nos quais cineastas-autobiógrafos buscam transpor o presente de uma experiência vivida para a narrativa a partir de metodologias imagético-sonoras sincrônicas surgem na cinematografia documentária mundial no final da década de 1960. Tais aspectos da transposição de um presente autobiográfico ainda permeiam a filmografia contemporânea e estão patentes na filmografia de diversos países. O artigo explica a transposição de aspectos do tempo presente em narrativas autobiográficas a partir de três perspectivas: (1) a cotidianidade como matéria-prima da narratividade autobiográfica; (2) a temporalidade cronológica como estrutura de referência e de apoio para a narrativa autobiográfica; (3) a interação dialógica entre cineasta e pessoas filmadas como manifestação do presente autobiográfico por meio da emersão de afetos.
O Fantasma de Jackson Pollock: Os estranhos movimentos do pintor pelas lentes do cinema
Authors: Bergamaschi Alessandra
Published: January 2022

O artigo se propõe analisar o filme experimental de Hans Namuth, Jackson Pollock 51, sobre o processo de Pollock na fase do dripping. Ao longo do texto serão evidenciados os desajustes entre a tentativa de capturar o segredo dos movimentos do artista em volta da tela e as opacidades introduzidas pela câmera, que ao invés de mostrar mais, paradoxalmente, desnaturaliza o olhar. Os casos de Matisse, que percebe a “estranha excitação” do gesto de sua mão no filme de François Campaux (1946), e da atuação de Picasso no filme de Georges Clouzot, O Mistério Picasso (1956), servirão como contrapontos para explorar o tema da mediação da pintura operada pela imagem em movimento, nesse momento de transição entre o modernismo e as práticas dos anos 1960, quando os artistas exploraram a potência do gesto e de seus duplos na performance, na videoarte e na body art.
Archivo, Memoria y Resignificación: Acercamientos al cine de reapropriación en México
Authors: Rashkin Elissa , Romo Álvarez J. Pablo
Published: January 2022

Este artículo explora las posibilidades analíticas del estudio del cine mexicano desde la desaparición y/o fragmentación de los archivos primordiales, para llegar posteriormente al ejercicio experimental de la reconstrucción. Nos avalamos del creciente corpus de historias trabajadas sobre y desde los márgenes de la cultura y la comunicación, donde los huecos y silencios hablan tanto como los hechos verificables. Partimos de la pérdida de la mayor parte del archivo cinematográfico mexicano del periodo silente, notando que, aun en periodos posteriores, la ausencia física de películas extraviadas o destruidas es exacerbada por varios tipos de olvido. Sin embargo, al generalizarse el acceso a la tecnología de producción, llegan a abundarse los indicios desligados de contextos identificables y, por lo tanto, desasociados de la memoria tanto individual como colectiva. Son estas imágenes incompletas, dispersas y residuales que el cine de reapropiación utiliza para plantear una suerte de reordenamiento simbólico: un ejercicio crítico de indagación acerca de la imagen fílmica, sus soportes materiales y los dispositivos que le dan origen. Para ejemplificar los argumentos, analizamos los cortometrajes Fantasmas del adiós de Ximena Cuevas (2019) y ¡Allá vienen! de Ezequiel Reyes (2018), ambos realizados a partir de archivos familiares, que permiten ilustrar las diferentes estrategias posibles para la resignificación de las memorias individuales y colectivas en el cine actual de reapropiación.
Economic Growth, Economic Development, and Poverty: A Bibliometric Analysis
Authors:   University of Tuzla, Babajic Amra , Suljic Mirza ,   University of Tuzla, Halilbegović Sanel
Published: January 2022

: The pertinacious problem of poverty in the world questions whether the existing mechanisms are effective in the poverty reduction process. Exploring this field has intensified since 1989, and this research provides an overview of the theoretical and empirical research that addresses economic development and poverty. Bibliometric analysis is performed, which includes names of the most common authors, journals, and countries of publications, as well as the frequency of words and expressions in the existing literature. Bibliometric units are researched from the Scopus database using keywords "economic development", "economic growth" and "poverty". The main contribution of this analysis is the review of existing literature addressing the key issues and identifying theoretical and empirical research in the field of economic development and poverty. This is the first study of its kind where scientific attention is being paid to economic growth, economic development, and poverty by the most influential journals and most prominent authors in economics.
PENDEKATAN METODE MARKOWITZ UNTUK OPTIMALISASI PORTOFOLIO DENGAN RISIKO EXPECTED SHORTFALL (ES) PADA SAHAM SYARIAH DILENGKAPI GUI MATLAB
Authors: Muthohiroh Umiyatun , Rahmawati Rita , Ispriyanti Dwi
Published: January 2022

A portfolio is a combination of two or more securities as investment targets for a certain period of time with certain conditions. The Markowitz method is a method that emphasizes efforts to maximize return expectations and can minimize stock risk. One method that can be used to measure risk is Expected Shortfall (ES). ES is an expected measure of risk whose value is above Value-at-Risk (VaR). To make it easier to calculate optimal portfolios with the Markowitz method and risk analysis with ES, an application was made using the Matlab GUI. The data used in this study consisted of three JII stocks including CPIN, CTRA, and BSDE stocks. The results of the portfolio formation with the Markowitz method obtained an optimal portfolio, namely the combination of CPIN = 34.7% and BSDE = 65.3% stocks. At the 95% confidence level, the ES value of 0.206727 is greater than the VaR value (0.15512).
ANALISIS TECHNOLOGY ACCEPTANCE MODEL PADA APLIKASI PLATFORM SHOPEE DENGAN PENDEKATAN PARTIAL LEAST SQUARE (STUDI KASUS PADA MAHASISWA UNIVERSITAS DIPONEGORO)
Authors: Faizah Ovie Auliya’atul , Suparti Suparti , Hoyyi Abdul
Published: January 2022

E-commerce refers to business transactions using digital networks such as the internet. Based on the rank on the Appstore and Playstore, Shopee places the first rank. In 2019, Shopee had 56 million visitors. Meanwhile, in the same year, it had 3,225 workers. The imbalance between the number of Shopee visitors and Shopee employees allows users to be disappointed with Shopee's services, but on the other hand, there are also many users who are happy with its services. With both positive and negative responses to the services provided by Shopee, this study analyzes the factors affecting the acceptance of Shopee Apps on students of Universitas Diponegoro Semarang. The analysis was based on the Technology Acceptance Model (TAM). It used the Structural Equation Modeling with the Partial Least Square (SEM-PLS) approach. The study used primary data obtained by distributing questionnaires to students of Universitas Diponegoro. The result showed 28 valid indicators, 5 deal inner models, and 8 significant pathways. All the causality between latent variables contained in the Technology Acceptance Model (TAM) have a positive and significant effect, it's just that the results of integrating trust variables on TAM, namely the latent variable between trust and interest in usage behavior, have no significant effect.
The Effect of Plasma Nitridation on Surface Hardness of Titanium Alloy (Ti-6Al-4V) for Artificial Knee Joint Applications
Authors: Prasetya Angga Yunis , Darmanto Darmanto , Dzulfikar Muhammad
Published: January 2022

Nitriding has been carried out using plasma nitriding techniques for surface treatment of Titanium as a biomaterial component. The purpose of this study was to determine the effect of plasma nitriding on surface hardness that occurs in titanium. The material used is Titanium Alloy (Ti-6Al-4V) Grade 5 which is processed by plasma nitriding by varying nitrogen (N2) and argon (Ar) gases of (100% N2/0% Ar), (95% N2/5% Ar), (90% N2/10% Ar), (85% N2/15% Ar), (80% N2/20% Ar), and (75% N2/25% Ar), and temperature 400ºC, time 5 hours and a pressure of 1.6 bar. The test results show that the optimum hardness is found in the gas composition with a ratio of 95% N2: 5% Ar. Obtained a hardness of 371 HV/VHN or an increase of 159% of the raw material with hardness value of 143 HV/VHN
A Preliminary Study on the Design of C-Section Props
Authors: Sita Dowy Pratama , Khafidh Muhammad
Published: January 2022

A cesarean section (c-section) is a surgical procedure aimed to deliver a baby by opening the abdominal wall and uterus. Now, c-section is one of the choices that are often chosen by mothers when giving birth. The knowledge and skills of c-section are important in education that focuses on obstetrics and obstetrics, especially for prospective specialist doctors taking the title of Specialist in Obstetrics and Gynecology (SpOG). Residents are required to be able to understand the procedure of c-section both in theory and practice. To train and improve c-section skills, one of the methods used is to use c-section props. This study aims to design and manufacture c-section props that resemble actual conditions and can be used repeatedly. The cesarean section props consist of three main parts, namely the abdominal body, the uterus, and the synthetic skin layer of the abdomen. The product master uses 3D printer results with PLA filament material. The props are made of RTV-48 silicone rubber and Polyurethane Foam with a mold made of fiberglass composite using the Hand Lay-UP method. The c-section props produced can provide an overview of the general cesarean surgery procedure.
Construcción de modelos teóricos escolares en la contextualización del conocimiento químico en la enseñanza remota
Authors: Martínez Rodríguez Diana Carolina , Garay Garay Fredy Ramón
Published: January 2022

In the current situation, education, science and technology have been the support that society has had to face the difficulties of all kinds unleashed as a result of the crisis. For this reason, the curricula have been rethought seeking to be “flexible” to accommodate the real situation of the students, an example of this is the implementation of natural science classroom projects supported from the contextualization of knowledge, since remote teaching It has broken the social bonds that are built in the classroom and that are essential when generating meaningful learning. An effective way of achieving this contextualization is to recognize the elements that the student has at home and that, due to their familiarity, allow them to permeate the process of building theoretical school models. Thus, in this document an educational experience is outlined, which from the context of scientific knowledge, allowed the construction of school scientific models.
Diseño y evaluación de una estrategia de aprendizaje usando mesas anatómicas digitales en la asignatura Morfología del Aparato Cardiovascular de la Universidad Antonio Nariño
Authors: Rodríguez Muñoz Henry Efraín , Bernal Andrés
Published: January 2022

Despite the abundant literature focused on improving medical teaching process, there are still unsolved problems in this area. This research designs and evaluates a learning strategy related to Morphology subject in students of medicine at Antonio Nariño University using digital anatomic tables. The present research can be considered as a mixed designed where the perception of the use of Digital Anatomic Tables is analyzed, followed by a pedagogical strategy for teaching cardiovascular system morphology. The obtained results indicate that students prefer a teaching learning strategy mediated by information and communication technologies. Furthermore, apart from the versatility of the strategy, students’ results are better than those obtained in the traditional teaching.
Alimentando el lenguaje en niños con implante coclear en tiempos del coronavirus
Authors: Rodríguez Montoya Silvia Raquel , Camargo Cárdenas David Orlando
Published: January 2022

The main goal of this trial is to train parents as facilitators of communicative interactions in their natural environment with their children, users all of them of cochlear implants that promotes the development of verbal language, through a non-traditional pedagogical orientation such as hybrid tele-assistance, that is finely interacts with the education for health and family well-being. The methodological approach was exploratory, descriptive, through hybrid sessions with synchronous sessions of an hour and a half with the parents and video-recorded samples of their communicative interactions during spontaneous speech with children in their natural environment “at home”. As a result, with the parents are achieved, the reestablishment of the communicative circuit and a positive change in the “linguistic nutrition” in their practices of participatory intervention during the dialogues with their children. In the future, the intangible costs that must be assumed because of the unexpected arrival of a child with hearing loss are reduced. In parallel, a place is generated for the reflection of a solid pedagogical and investigative proposal that makes transdisciplinarity visible as the first responders in health with projection in family, social and school education.
Herramientas digitales para recolección, procesamiento y presentación de datos de campo como instrumento para afrontar la contingencia COVID-19
Authors: Alvarado Acosta Didier Haid
Published: January 2022

In March of 2020, the COVID-19 outbreak forced people to lock themselves inside their homes and begin the process of transitioning from face-to-face activities at work, schools and universities to a 100 % virtual method. Even when Communication Technologies (ICT) and online platforms have seen growth over the past two decades, including various virtual libraries developed by database publishers or web-based training programs that appear to shorten the learning curve (Lee, Hong y Nian, 2002), many people were unprepared for this transition and all of them are now dedicated to entering the new reality. In this order of ideas, the activities that have traditionally required the assistance of the staff have had to adapt with the use of new tools, which meet daily needs. A clear example is the field work collection tasks. In this group, there are different types such as surveys, photographs, reviews or on-site inspections. The current work presents the use of tools for collecting, validating, analysing and presenting data remotely and in real time. All of them based on the ArcGIS Online platform.
Międzynarodowe organizacje radykalnej lewicy wobec Unii Europejskiej. Analiza wybranych przykładów w kontekście pandemii SARS-CoV-2
Authors: Malendowicz Paweł
Published: January 2022

Przedmiotem artykułu jest analiza dokumentów programowych i publicystyki trzech ruchów i nurtów radykalnie lewicowych, które były reprezentowane przez takie organizacje międzynarodowe, jak: the Initiative of Communist and Workers’ Parties in order to study and elaborate European issues and to coordinate their activity (CWPE), the International Socialist Alternative (ISA) i the International Socialist Tendency (IST). W każdej z wymienionych organizacji aktywne były również polskie partie i grupy polityczne. Celem artykułu jest określenie przyczyn i treści krytyki Unii Europejskiej przez wymienione organizacje, wskazanie podobieństw i różnic między nimi, a także określenie różnic pomiędzy krytyką integracji europejskiej dokonaną przez ruchy radykalnej lewicy oraz ruch anarchistyczny i ruchy radykalnie nacjonalistyczne. Analiza została przeprowadzona z uwzględnieniem krytyki działań elit Unii Europejskiej i rządów państw europejskich w zwalczaniu pandemii SARS-CoV-2.
Criteria for assessing action undertaken by border municipalities towards a “green smart city”
Authors: Łaźniewska Ewa , Janicka Izabela , Górecki Tomasz
Published: January 2022

The article presents a proposal for a research tool that might assess the ecological activity of municipalities, with particular emphasis on those that lie on national boundaries. With climate change, it has become necessary to take into account the principles of sustainable growth while maintaining high living standards in the long term. Systematic research on the action undertaken by municipalities in this area is a necessary requirement in the coming years. For this reason, the main directions and areas of research in the process of approaching the concept of a “green smart city” have been outlined. The available literature is limited to research in the field of smart cities and examines solutions for large urban agglomerations. The evaluation criteria of “ecological maturity” proposed in this paper are designed for small border municipalities. One may accept the thesis that due to their specificity, location, natural diversity and the opportunities for cooperation with a foreign partner that they offer, border municipalities can create a model of ecological behaviour in terms of a “green smart city”. This evolution requires support and monitoring for policymakers, and the proposed online research tool may reveal “ecological immaturities”, decisional errors or just plain negligence. One might only hope that, as a result of these indications, the recommendations will prove valuable for all local government units. On the other hand, a number of doubts and dilemmas are raised that researchers are unable to eliminate at this stage.
The structure of the Eurosceptic movement in Poland – political and civil far-right extremists
Authors: Khmilevska Polina
Published: January 2022

Far-right extremist groups in Poland have undergone the substantive evolution over the course of last thirty years – from being marginalized, small in number group to being one of the most developed and numerous movements in civil society, as well as on the political landscape. The article examines the history of this movement, its stages of development and demonstrates how pivotal is the role of far-right groups in Euroscepticism in Poland.
Janusz Józef Węc, Germany’s Position on the System Reform of the European Union in the 2002–2016, Wydawnictwo Peter Lang, Berlin 2018, ss. 288.
Authors: Dulak Michał
Published: January 2022

Recenzja
Czynnik „arabskiej wiosny” w stosunkach Unia Europejska–Algieria
Authors: Stachurska-Szczesiak Katarzyna
Published: January 2022

W 10 rocznicę masowych protestów zwanych „wiosną arabską”, jakie przeszły przez państwa południowej flanki basenu Morza Śródziemnego (BMŚ), rozumienie świata staje się bardziej złożone. Dla Unii Europejskiej (UE) rewolty dokonane w państwach z nią sąsiadujących były „strategicznym zaskoczeniem” i zburzyły jej dotychczasowe założenia wobec regionu, zmuszając ją do ich rewizji i szybkiego reagowania. Dla społeczeństw arabskich były wyrazem „przebudzenia”, przełamując uczucie strachu oraz buntu wobec panujących reżimów autorytarnych, a także próbą odrzucenia neoliberalnego sposobu „urządzania świata”. Algieria zajmuje strategiczne miejsce na mapie bilateralnych relacji, jakie UE utrzymuje z państwami dotkniętymi „wiosną arabską. Bliskość geograficzna, przeszłość historyczna oraz potencjał jaki posiada to państwo sprawiają, że UE jest „na nowo” obecna w Algierii, wspierając ją w trudnej drodze przekształceń polityczno-gospodarczych.

Celem niniejszego artykułu jest analiza wpływu „wiosny arabskiej” na kształt współczesnych stosunków UE–Algieria, zwracając uwagę na ramy wyznaczone przez „Wspólne Priorytety Partnerstwa”, koncentrując się na trzech kluczowych sektorach współpracy ustalonych na lata 2018–2020.
A learned query rewrite system using Monte Carlo tree search
Authors: Zhou Xuanhe , Li Guoliang , Chai Chengliang , Feng Jianhua
Published: January 2022

Query rewrite transforms a SQL query into an equivalent one but with higher performance. However, SQL rewrite is an NP-hard problem, and existing approaches adopt heuristics to rewrite the queries. These heuristics have two main limitations. First, the order of applying different rewrite rules significantly affects the query performance. However, the search space of all possible rewrite orders grows exponentially with the number of query operators and rules and it is rather hard to find the optimal rewrite order. Existing methods apply a pre-defined order to rewrite queries and will fall in a local optimum. Second, different rewrite rules have different benefits for different queries. Existing methods work on single plans but cannot effectively estimate the benefits of rewriting a query. To address these challenges, we propose apolicy treebased query rewrite framework, where the root is the input query and each node is a rewritten query from its parent. We aim to explore the tree nodes in thepolicy treeto find the optimal rewrite query. We propose to useMonte Carlo Tree Searchto explore the policy tree, which navigates the policy tree to efficiently get the optimal node. Moreover, we propose a learning-based model to estimate the expected performance improvement of each rewritten query, which guides the tree search more accurately. We also propose a parallel algorithm that can explore the tree search in parallel in order to improve the performance. Experimental results showed that our method significantly outperformed existing approaches.
Butterfly support for off diagonal coefficients and boundedness of solutions to quasilinear elliptic systems
Authors: Leonardi Salvatore , Leonetti Francesco , Rocha Eugenio , Staicu Vasile
Published: January 2022

We consider quasilinear elliptic systems in divergence form. In general, we cannot expect that weak solutions are locally bounded because of De Giorgi’s counterexample. Here we assume that off-diagonal coefficients have a “butterfly support”: this allows us to prove local boundedness of weak solutions.
Optimized operation of large scale battery systems
Authors: Lehmann Daniel , Hidalgo Rodriguez Diego , Brack Michel
Published: January 2022

In the decentralized renewable driven electric energy system, economically viable battery systems become increasingly important for providing grid-related services. End of 2016, STEAG has successfully started the commercial operation of six 15 MW large scale battery systems which have been incorporated in STEAG’s primary control pool. During the commissioning phase, extensive effort has been spent in optimizing the operational efficiency of these systems with promising results. However, the operation experience has shown that there is still significant potential for improving the system behavior as well as reducing the aging of the battery cells. By analyzing historical data of the charging power associated with the state of charge management, opportunities for significantly reducing the operational costs have been identified. By means of more involved model-based control strategies, which adequately consider the specific characteristics of the battery system, and by using mathematical optimization and artificial intelligence, adapting the state of charge management strategy to new applications, these additional cost savings can be obtained. Apart from giving insights into the operational experience with large scale battery systems, the contribution of this paper lies in proposing strategies for reducing the operational costs of the battery system using classical approaches as well as mathematical optimization and neural networks. These approaches will be illustrated by simulation results.
Prevalence of type 2 diabetes mellitus, metabolic syndrome, and related morbidities in overweight and obese children
Authors: Dündar İsmail , Akıncı Ayşehan
Published: January 2022

Objectives

The aim of the study was to determine the prevalence of metabolic syndrome (MetS), type 2 diabetes mellitus (T2DM), and other comorbidities in overweight and obese children in Malatya, Turkey.

Methods

Retrospective cross-sectional study. We studied 860 obese and overweight children and adolescents (obese children Body mass index (BMI) >95th percentile, overweight children BMI >85th percentile) aged between 6 and 18 years. The diagnosis of MetS, impaired glucose tolerance (IGT), impaired fasting glucose (IFG), and T2DM were defined according to modified the World Health Organization criteria adapted for children. Other comorbidities were studied.

Results

Subjects (n=860) consisted of 113 overweight and 747 obese children of whom 434 (50.5%) were girls. MetS was significantly more prevalent in obese than overweight children (43.8 vs. 2.7%, p<0.001), and in pubertal than prepubertal children (41.1 vs. 31.7%, p<0.001). Mean homeostasis model assessment for insulin ratio (HOMA-IR) was 3.6 ± 2.0 in the prepubertal and 4.9 ± 2.4 in pubertal children (p<0.001). All cases underwent oral glucose tolerance test and IGT, IFG, and T2DM were diagnosed in 124 (14.4%), 19 (2.2%), and 32 (3.7%) cases, respectively. Insulin resistance (IR) was present in 606 cases (70.5%).

Conclusions

Puberty and obesity are important risk factors for MetS, T2DM, and IR. The prevalence of MetS, T2DM, and other morbidities was high in the study cohort. Obese children and adolescents should be carefully screened for T2DM, insulin resistance, hyperinsulinism, dyslipidemia, hypertension, IGT, and IFG. The prevention, early recognition, and treatment of obesity are essential to avoid associated morbidities.