bluuebunny/crossref_metadata_2025 huggingface dataset:
Pengembangan Bahan Ajar Balok dan Kubus Berbasis Etnomatematika dengan Konteks Candi Jolotundo Trawas Mojokerto
Authors: Ningrum Iid Fitria , Apriyono Fikri
Published: October 2021

Etnomatematika adalah suatu aktivitas kehidupan dari elemen-elemen masyarakat yang menjai rutinitas, atau ciri khas dari suatu daerah yang memiliki konsep-konsep matematika. Tujuan penelitian ini adalah: 1) Menjelaskan proses pengembangan bahan ajar balok dan kubus berbasis etnomatematika dengan konteks candi Jolotundo Trawas Mojokerto. 2) Menjelaskan kelayakan bahan ajar balok dan kubus berbasis etnomatematika dengan konteks candi Jolotundo Trawas Mojokerto yang dilihat dari aspek kelayakan, kevalidan dan keefektifan suatu produk. Penelitan ini memperoleh kesimpulan 1) Proses pengembangan bahan ajar balok dan kubus dibagi menjadi beberapa thap diantaranya yaitu; Tahap pertama yang dilakukan ialah tahap Analysis (analisis). Dalam tahap ini terdapat 3 langkah, yaitu (1) Analisis kebutuhan; (2) Analisis karakteristik siswa; dan (3) Analisis Etnomatematika. Tahap kedua yang dilakukan ialah tahap Design (perancangan). Tahap ini merupakan tahap penyusunan desain LKS, serta penyusunan desain instrumen. Tahap ketiga ialah Development (pengembangan). Dalam tahap ini dilakukan penilaian oleh para ahli. Dari hasil penilaian tersebut diperoleh penilaian kevalidan dari LKS. Selanjutnya, tahap keempat ialah Implementation (penerapan). Pada tahap ini dilakukan uji coba kepada siswa SMP Penanggungan Ngoro Mojokerto kelas VIII-A dengan diterapkannya pembelajaran menggunakan LKS yang telah dikembangkan. Sedangkan tahap kelima ialah Evaluation (evaluasi). Pada tahap ini diperoleh hasil penilaian yang digunakan untuk mengetahui kepraktisan dan keefektifan perangkat pembelajaran. 2)  Van den Nieveen dalam Rachmad (2010) menyatakan bahwa dalam penelitian pengembangan model pembelajaran perlu beberapa kriteria kualias atau kelayakan diantaranya; a) Kevalidan. Kriteria valid terpenuhi karena penilaian dari ketiga validator menghasilkan rata-rata total dalam kategori baik, dengan nilai rata-rata mencapai 3,2; b) Kepraktisan. Kriteria praktis terpenuhi karena LKS yang dikembangkan mendapatkan nilai rata-rata 3,9 dengan kriteria sangat baik dari angket respon siswa maupun guru yang sudah disebar; c) Keefektifan. Berdasarkan nilai post-test yang diberikan pada tahap uji coba, diperoleh data bahwa sebanyak 69% siswa dinyatakan tuntas. Dari ketiga aspek tersebut dapat diketahui bahwa bahan ajar yang dikembangkan layak untuk dipergunakan.
Studi Komparatif Hasil Belajar Matematika Siswa Berdasarkan Jurusan
Authors: Nabilah Nouri Alfin , Wulandari Yunita Nury , Pangertika Hilda Amalia
Published: October 2021

Penelitian ini bertujuan untuk mengetahui perbandingan hasil belajar matematika siswa pada masing-masing jurusan. Tempat penelitian adalah di Madrasah Aliyah Negeri 1 Jember. Subjek pada penelitian ini adalah seluruh siswa kelas XI pada semua jurusan di MAN 1 Jember. Metode yang digunakan dalam penelitian ini adalah kuantitatif, dengan teknik pengumpulan data menggunakan dataset statistic yang didapat dari hasil ulangan harian matematika kelas XI KD 3.3 tentang menjelaskan matriks dan kesamaan matriks dengan menggunakan masalah kontekstual dan melakukan operasi pada matriks yang meliputi penjumlahan, pengurangan, perkalian skalar, dan perkalian, serta transpose. Teknik analisis data menggunakan analisis kuantitatif inferensial dengan uji One-Way Anova. Hasil dari penelitian ini adalah diketahui adanya perbedaan hasil belajar matematika siswa disetiap jurusan, yakni jurusan Matematika-Ilmu Pengetahuan Alam (MIPA), Ilmu Pengetahuan Sosial (IPS), Program Keagamaan (PK), Bahasa, dan Bina Insan Cendekia (BIC). Jurusan sangat berpengaruh pada hasil belajar matematika, jika dilihat dari segi kemampuan nalar matematika maka jurusan BIC dan MIPA yang paling besar nilai hasil belajar matematikanya.
Membangun Epistemologi Kepemimpinan Spiritual Guna Memperkuat Pendidikan Islam: Suatu Telaah Diskursif
Authors: M M Samkhan
Published: October 2021

The problems in Islamic education today can be said to be confronted in terms of quality and poor cycles. Several studies have resulted in his analysis which has shown that leadership is the most important fact in an effort to change the cycle for the better. Therefore, it is necessary to construct a paradigmatic science, especially in the framework of the epistemology is able to bring strong leadership. This effort is intended to be carried out in developing and strengthening Islamic education with better management and in which there are Islamic values ​​as elan fundament of education management. Where these values ​​can build motivation and work performance that results in two goals, because the process developed is not only aimed at satisfaction and productivity, but also oriented towards values transcendental-eschatological (worship and the pleasure of God). The leadership is a visionary leadership and is able to build effective, efficient and productive organizational processes in conducive learning. This leadership model is none other; spiritual leadership that is able to give birth to the sun in the world of education.
Keywords: epistemology, spiritual leadership, Islamic education
 
Problematika dalam pendidikan Islam saat ini bisa dikatakan berhadapan dalam masalah kualiatas dan siklus yang kurang baik. Dari beberapa penelitian telah mengahasilkan analisisnya yang telah menunjukkan bahwa kepemimpinan adalah fakta paling penting dalam upaya mengubah siklus yang lebih baik. Oleh karena itu, perlu adanya konstruks paradigmatik keilmuan terutama dalam kerangka epistemologi yang mampu melahirkan kepemimpinan yang kuat (strong leaderhip). Upaya ini guna dilakukan dalam membangun dan memperkuat pendidikan Islam dengan pengelolaan yang lebih baik dan didalamnya terdapat nilai-nilai Islam sebagai elan fundamen pengelolaan pendidikan. Yang dimana nilai-nilai tersebut dapat membangun motivasi dan performa kerja yang mengahasilkan dua tujuan, karena proses yang dikembangkan tidak hanya bertujuan pada kepuasan dan produktivitas, melainkan juga berorientasi pada nilai-nilai trasendental-eskatologis (ibadah dan keridhaan Allah). Kepemimpinan terebut merupakan kepemimpinan yang visoner dan mampu membangun proses organisasi yang efektif, efisien dan produktif dalam pembelajaran yang kondusif. Model kepemimpinan ini tidak lain adalah kepemimpinan spiritual yang mampu melahirkan surya dalam dunia pendidikan.
Kata Kunci: epistemologi, kepemimpinan spiritual, pendidikan Islam
Pengembangan Kompetensi Dosen di Sekolah Tinggi Agama Islam Riyadhul Jannah Jalancagak Subang Jawa Barat
Authors: Fajrussalam Hisny , Zulfa Fitria , Hidayat Indra Saeful , Saputra Ajat
Published: October 2021

The research aims to describe the competence development of lecturers at the Riyadhul Jannah Islamic College, Jalancagak Subang West Java. The study was conducted with a qualitative approach. Data obtained by observation, interview, and documentation techniques. The results obtained were the competence development of lecturers carried out by the Riyadhul Jannah Islamic Islamic College consisting of four variables, namely 1) communication and motivation; 2) lecturer professionalism; and 3) conflict management. Reformulation is needed in the lecturer development conducted by the Riyadhul Jannah Islamic College in order to improve the quality of higher education. Some homework also needs to be carried out to better support the process of lecturer development competence so that quality learning processes are achieved, namely re-selection of lecturers who are not linear and lecturer honorarium enhancement.
Penelitian ini bertujuan untuk mendeskripsikan pengembangan kompetensi dosen di Sekolah Tinggi Agama Islam Riyadhul Jannah Jalancagak Subang Jawa Barat. Penelitian dilakukan dengan pendekatan kualitatif. Data diperoleh dengan teknik observasi, wawancara, dan dokumentasi. Hasil yang diperoleh adalah pengembangan kompetensi dosen yang dilakukan oleh Sekolah Tinggi Agama Islam Riyadhul Jannah yang terdiri dari empat variabel, yaitu 1) komunikasi dan motivasi; 2) profesionalisme dosen; dan 3) manajemen konflik. Diperlukan reformulasi dalam pengembangan kompetensi dosen yang dilakukan oleh Sekolah Tinggi Agama Islam Riyadhul Jannah dalam rangka meningkatkan kualitas pendidikan tinggi. Beberapa pekerjaan rumah juga perlu dilakukan untuk lebih mendukung proses pengembangan kompetensi dosen sehingga proses pembelajaran yang berkualitas tercapai, yaitu pemilihan ulang dosen yang tidak linier dan peningkatan honorarium dosen.
Kata Kunci, pengembangan komepetensi dosen, perguruan tinggi Islam
FLAT-PRESSED WOOD PLASTIC COMPOSITES FROM COMMUNITY FOREST WOOD BARK AND RECYCLED POLYPROPYLENE: THE EFFECT OF PRESSING TEMPERATURE ON THE PHYSICAL, MECHANICAL, AND MORPHOLOGICAL PROPERTIES
Authors: Sutrisno  , Alamsyah Eka Mulya , Darwis Atmawi , Ahmad Alia Salima , Suzuki Shigehiko , Kobori Hikaru
Published: October 2021

The article describes a new idea related to the use of wood bark powder as a filler material in the production of wood plastic composites using flat-pressed method, based on its thermal stability and abundant availability, enabling replacing wood powder, which has been widely used. This research aims to study the effect of temperature on the physical, mechanical, and morphological properties of flat-pressed wood plastic composites made from Gmelina arborea bark and recycled polypropylene. A 40:60 mesh (5% moisture content) of G. arborea bark powder was mixed with recycled polypropylene (RPP) pellets with a weight ratio of 40:60 and a maleic anhydride (MAH) modifier as much as 5% of the weight of the RPP was added. Mixing the ingredients is done in a rotating blender for 15 minutes at a speed of 80 rpm until homogeneous. The mixture was heated at 175oC until the RPP pellets were completely melted and then cooled at room temperature. After that, the material mixture was made into powder and filtered, and then moulded in a steel plate mould at temperatures of 160, 165, and 170oC under a pressure of 30 kg/cm2 for 4 minutes with a target density of 1 g/cm3. Physical properties including density, moisture content, water absorption, thickness swelling, and volume shrinkage according to ASTM D570 standard were determined. Mechanical properties, such as modulus of elasticity (MOE) and modulus of rapture (MOR), referring to ASTM D7031 standard, and tensile strength parallel to panel length, referring to ASTM D638 standard, were also evaluated. In addition, composite morphology was also studied using scanning electron microscopy (SEM). The results showed that the increasing of pressing temperature had a significant effect on the improvement of moisture content, water absorption, thickness swelling, volume shrinkage, and MOR. MOR value increased by 34.12% when the pressing temperature increased form 160oC up to 170oC. Our method allows improving the physical and mechanical properties of wood bark plastic composites based on a pressing temperature of 170oC.
Towards Federated Learning-Enabled Visible Light Communication in 6G Systems
Authors: Naser Shimaa , Bariah Lina , muhaidat sami , Al-Qutayri Mahmoud , Damiani Ernesto , Sofotasios Paschalis C. , Debbah Merouane
Published: October 2021

Visible light communication is envisaged as a promising enabling technology for sixth generation (6G) and beyond networks. It was introduced as a key enabler for reliable massive-scale connectivity, mainly thanks to its simple and low-cost implementation which require minor variations to the existing indoor lighting systems. The key features of VLC allow offloading data traffic from the current congested radio frequency (RF) spectrum in order to achieve effective short-range, high speed, and green communications. However, several challenges prevent the realization of the full potentials of VLC, namely the limited modulation bandwidth of light emitting diodes, the interference resulted from ambient light, the effects of optical diffuse reflection, the non-linearity of devices, and the random receiver orientation. Meanwhile, centralized machine learning (ML) techniques have exhibited great potentials in handling different challenges in communication systems. Specifically, it has been recently shown that ML algorithms exhibit superior capabilities in handling complicated network tasks, such as channel equalization, estimation and modeling, resources allocation, opportunistic spectrum access control, non-linearity compensation, performance monitoring, detection, decoding/encoding, and network optimization. Nevertheless, concerns relating to privacy and communication overhead when sharing raw data of the involved clients with a server constitute major bottlenecks in large-scale implementation of centralized ML techniques. This has motivated the emergence of a new distributed ML paradigm, namely federated learning (FL). This method can reduce the cost associated with transferring the raw data, and preserve clients privacy by training ML model locally and collaboratively at the clients side. Thus, the integration of FL in VLC networks can provide ubiquitous and reliable implementation of VLC systems. Based on this, for the first time in the open literature, we provide an overview about VLC technology and FL. Then, we introduce FL and its integration in VLC networks and provide an overview on the main design aspects. Finally, we highlight some interesting future research directions of FL that are envisioned to boost the performance of VLC systems.
Feedback Control of a Foldable Delta Mechanism with Integrated Inkjet-Printed Angle Sensors
Authors: Türkmen Dila , Acer Kalafat Merve
Published: October 2021

Foldable robotics is accepted as one of the leading technologies in the soft robotics field. Integrating the sensing components, including hinge angle proprioception, into the robot with a single fabrication method is a part of the field’s ultimate goal. Here we present a cheap single-step method for angle sensing integration into the hinges, with an accurate and reproducible performance. We use silver nanoparticle inkjet printing on the flexible structural layer (PET) of the foldable robot (i.e. Delta robot), using an office-type printer. Silver printed sensors were studied for slight bending applications; however, we report their behavior under a 1 mm minimum radius of curvature, an advanced range both for silver strain sensors and any printed hinge position sensors. Among the three patterns studied, one gave a mean absolute dynamic hysteresis error below 1 degree. Reproducibility of a printed angle sensor behavior is reported for the first time, with three prototypes of each pattern (2degree standard deviation). Printed sensor feedback is tested with proportional control for the first time, via set-point and tracking tasks. On-off control law is also implemented and errors below 1 degree are achieved. Proportional control performances are compared with encoder feedback control and the difference between the realized trajectories are found to be under 1 mm in the task plane.
A Heuristic Algorithm for Rate-Profiling of Polarization Adjusted Convolutional (PAC) codes
Authors: Mishra Samir Kumar , Katyal Digvijay , Ganapathi Sarvesha Anegundi
Published: October 2021

In this paper, we propose a heuristic algorithm for rate-profile construction of Arikan's Polarization Assisted Convolutional (PAC) codes. This method can be used for any blocklength, rate and convolutional precoding polynomial. The proposed algorithm tries to create a rate-profile for which the corresponding PAC code is, in a sense, locally optimized for having maximum possible minimum distance.

Simulation results show that PAC codes constructed with the proposed algorithm perform better in terms of frame erasure rate (FER) compared to the PAC codes constructed with rate profiling designs in existing literature for various list lengths. Further, by using a (64, 32) PAC code as an example, it is shown that the choice of convolutional precoding polynomial can have a significant impact on FER performance. Finally, we demonstrate that for a target FER of $\mathbf{10^{-5}}$, (128, 72) PAC codes constructed with our proposed algorithm is just 0.35 dB away from the information theoretic limit at this blocklength.
A Reconstruction Filter for Saturated Accelerometer Signals Due to Insufficient FSR in Foot-mounted Inertial Navigation System
Authors: Jao Chi-Shih , Shkel Andrei M.
Published: October 2021

In pedestrian inertial navigation, one possible placement of Inertial Measurement Units (IMUs) is on a footwear. This placement allows to limit the accumulation of navigation errors due to the bias drift of inertial sensors and is generally a preferable placement of sensors to achieve the highest precision of pedestrian inertial navigation. However, inertial sensors mounted on footwear experience significantly higher accelerations and angular velocities during regular pedestrian activities than during more conventional navigation tasks, which could exceed Full Scale Range (FSR) of many commercial-off-the-shelf IMUs, therefore degrading accuracy of pedestrian navigation systems. This paper proposes a reconstruction filter to mitigate localization error in pedestrian navigation due to insufficient FSR of inertial sensors. The proposed reconstruction filter approximates immeasurable accelerometer's signals with a triangular function and estimates the size of the triangles using a Gaussian Process regression. To evaluate performance of the proposed reconstruction filter, we conducted two series of indoor pedestrian navigation experiments with a VectorNav VN-200 IMU and an Analog Device ADIS16497-3 IMU. In the first series of experiments, forces experienced by the IMUs did not exceed the FSRs of the sensors, while in the second series, the forces surpassed the FSR of the VN-200 IMU and saturated the accelerometer's readings. The saturated readings reduced the accuracy of estimated positions using the VN-200 by 1.34× and 3.37× along horizontal and vertical directions. When applying our proposed reconstruction filter to the saturated measurements, the navigation accuracy was increased by 5% horizontally and 50% vertically, as compared to using unreconstructed signals.
Human-Machine Cooperative Decision Making Outperforms Individualism and Autonomy
Authors: Rothfuß Simon , Wörner Maximilian , Inga Jairo , Kiesel Andrea , Hohmann Sören
Published: October 2021

This article has been accepted for publication in IEEE Transactions on Human-Machine Systems (DOI: 10.1109/THMS.2023.3274916). The experiment reported in this paper provides a first experimental evaluation of human-machine cooperation on decision level: It explicitly focuses on the interaction of human and machine in cooperative decision making situations for which a suitable experimental design is introduced. Furthermore, it challenges conventional leader-follower approaches by comparing them to newly proposed automation designs based on cooperative decision making models. These models originate from negotiation theory and game theory and allow for an investigation of cooperative decision making between equal partners. This equality is motivated by similar approaches on the action level of human-machine cooperation.

The experiment’s results indicate an added value of the proposed automation designs in terms of objective cooperative performance as well as human trust in and satisfaction with the cooperation. Hence, the experiment yields the same insight on decision level as already observed on action level: it may be beneficial to design machines as equal cooperation partners and in accordance to models of emancipated human-machine cooperation.
Fundamental Limits on the Uplink Performance of the Dynamic-Ordered SIC Receiver
Authors: Lusvarghi Luca , Merani Maria Luisa
Published: October 2021

Due to the rapid and widespread growth of the Internet-of-Things (IoT) paradigm, present days witness an exponential increase in the number of connected devices. In this regard, the orthogonal transmission techniques featured by conventional 4G and 5G systems can only support a limited number of simultaneously active users, due to their low spectral efficiency and poorly flexible resource allocation.

To overcome such limitations, the 6G framework will include novel Next Generation Multiple Access (NGMA) solutions that will efficiently and flexibly connect a significantly larger number of devices over the same portion of spectrum. Under the NGMA umbrella, the Power-Domain Non-Orthogonal Multiple Access (PD-NOMA) technology is able to accommodate multiple users on the same frequencies by carefully assigning different power levels to the active users and employing Successive Interference Cancellation (SIC) receivers.

In this work, we put forth a novel analytical approach to evaluate the performance that PD-NOMA achieves on the uplink of a single cell when a dynamic-ordered SIC receiver is considered. 

With respect to other existing works, the fundamental limits on the system performance are assessed analytically for an arbitrary number $n$ of simultaneously transmitting users, and both the case of Rayleigh and lognormal-shadowed Rayleigh fading are examined.

The closed-form expressions presented in this work, whose correctness and excellent accuracy are validated through Monte Carlo simulations, disclose the impact of lognormal shadowing and an increasingly larger number of active users on the PD-NOMA performance. 
Equivalent-Circuit Modeling of Lossless and Lossy Bi-Periodic Scatterers by an Eigenstate Approach
Authors: Hernández-Escobar Alberto , Abdo-Sánchez Elena , Esteban Jaime , Martín-Guerrero Teresa María , Camacho-Peñalosa Carlos
Published: October 2021

The use of an eigenstate based equivalent circuit topology is proposed for the analysis and modeling of lossless and lossy bi-periodic scatterers. It can significantly simplify the design of this kind of surfaces, since it reduces the number of elements with respect to other general circuits. It contains at most only two admittances and two transformers depending on one unique transformation ratio. The real parts of these admittances can be assured to be non-negative, an interesting aspect in the modeling of lossy surfaces such as those present in asorbers. Moreover, due to the capability of decomposition into the eigenexcitations of the structure, the circuit provides important physical insight. Different cases of scatterers have been analyzed: symmetric and asymmetric, lossy and lossless. In all these cases, the modeling of the circuit admittances has been successfully achieved with a few RLC elements, positive and frequency independent. In the case of structures with symmetries, the transformation ratio directly reflects the physical orientation of the eigenexcitations of the scatterer. Furthermore, in the case of lossy scatterers but without symmetries, the resulting equivalent circuit reveals that their eigenexcitations are not linear polarizations, but elliptic polarizations whose properties are described by the complex transformation ratio.
Computational Impacts of SVCs on Optimal Power Flow using Approximated Active-Set Interior Point Algorithm
Authors: Sadat Sayed Abdullah , Rui Xinyang , Sahraei-Ardakani mostafa
Published: October 2021

Interior point methods (IPMs) are popular and powerful methods for solving large-scale nonlinear and nonconvex optimization problems, such as AC optimal power flow (ACOPF). There are various ways to model ACOPF, depending on the objective and the physical components that need to be optimized. This paper models shunt flexible AC transmission systems (FACTS). Shunt FACTS devices such as static VAR compensators (SVCs) are sources for reactive power compensations and addressing voltage stability issues. The co-optimization of SVCs with power dispatch can impact the computational performance of ACOPF. In this paper, we evaluate the performance of different ACOPF formulations with approximated active-set interior point (AASIP) algorithm and co-optimization of SVC set points alongside other decision variables. Our numerical results suggest that both AASIP and SVCs alone improves the computation performance of almost all formulations. The gain in performance, however, depends on the sparsity of the formulation. The most spares formulation, such as branch power flow rectangular voltages (BPFRV), shows the highest gain in performance. In the event of co-optimizing SVCs with power dispatch using AASIP, the performance gain is minimal. Finally, the results are verified using various test cases ranging from 500-bus systems to 9591-bus systems.
Protest against the politicians: Vote switching in the Italian 2016-2020 constitutional referenda
Authors: Bergman Matthew E. , Passarelli Gianluca
Published: October 2021

Referenda provide the opportunity for voters to express political economic protest and provide additional ways to support parties they vote for in elections. Alternatively, referenda also provide voters a chance to express their policy references in a way that does not affect which party will lead the government. The rejection of the 2016 Italian Constitutional referendum by 60% of voters and the approval the 2020 Italian Constitutional Referendum by 70% of voters could be a result of changing political economic conditions, influences related to partisanship and party leadership, or a change in approval of the reforms contained within the referendum. The article examines these possibilities in turn and then in a multivariate analysis. First, the overall change in economic discontent, satisfaction with the governing coalition and leaders, and belief in the content of the reforms between 2016 and 2020 will be examined. We also examine the how voters of each of the parties in the 2018 general election shifted on these variables. Then individual level analysis of consistent voters and switchers will assess the relative strength of partisanship, economic, political, and referendum-specific factors in convincing voters to switch their vote. We find that referendum-specific factors had the strongest predictive power followed by those related to government approval. Voters approved of the contents that would reduce the number of politicians in Italy and used the referendum to express support or displeasure with the incumbent’s policy programme. Our results contribute to the studies on second-order elections where voters are allowed for greater expressive preferences.
Losers get sick? The effects of electoral defeat on perceptions of pandemic risk
Authors: Bobba Giuliano , Mancosu Moreno , Roncarolo Franca , Seddone Antonella , Vegetti Federico
Published: October 2021

Research in political behavior shows that citizens update their past perceptions and future expectations over several phenomena depending on whether their favorite party wins or loses the elections. This bias is explained by different psychological mechanisms triggered by individuals' attachment and trust in political parties. In this paper we investigate whether such a winner-loser effect conditions people's concerns about the Covid-19 pandemic. We leverage the occurrence of regional elections in six Italian regions in September 2020, right at the onset of the second wave of the pandemic in the country, to test whether supporting a candidate who won/lost the elections affects (1) people's fear to get sick with Covid-19, and (2) their expectation about the gravity of the upcoming second wave. Given that the public healthcare system in Italy is managed by the regions, we expect supporters of the losing candidate to lose trust in the region's ability to deal with the pandemic, hence increasing their personal concerns. We test this expectation using pre/post election panel data, and employing respondents from the other regions who voted at a concurrent referendum as a placebo group. Our results show that, while overall concerns tend to decrease from the first to the second wave, for elections losers they remain unchanged. This indicates that losing an election, albeit second-order, can affect citizens' outlook on future events in domains that are largely beyond political control.
Il disallineamento tra orientamenti elettorali e posizioni sui temi: una questione giovanile o di famiglia politica?
Authors: Tuorto Dario
Published: October 2021

The transformation of politics in contemporary democracies has led to the emergence of a new ideological conflict, alongside the traditional left-right scheme, described as liberal–authoritarian or cosmopolitan–nationalist cleavage (Kriesi et al. 2008; Hooghe and Marks 2002). This change brought to a redefinition of the linkages between issue and voting preferences, as many voters decide to support a party regardless of their positions on issues while voting for the same party. Within such framework, the contribute of the new generations to the growth of the electoral dealignment and volatility has been largely analysed (Miller et al. 1996; Franklin 2004; Plutzer 2002). Issue incongruency is part of the process. Young people are often considered to be tolerant and inclusive because they grew up under prosperous and secure conditions and developed post-materialist values of freedom, multiculturalism, progressivism (Inglehart and Welzel 2005; Janmaat and Keating 2019). However, the perspective of left-cosmopolitans engaged in electoral politics contrasts with the image of economically-insecure left-behind group of young people who don’t share the same progressive values (Bartle et al. 2020; Sloam and Henn 2019) and support right-wing political parties. What is still unknown is the extent to which extreme ideological traits and attitudes (e.g. negative discourses on immigration) combine with positions of openness on individual freedom. Likewise, the same contradiction can be found among left-wing voters who assume liberal position on economy or those economically left and culturally conservative. The article aims at analysing the relationship between issue positions and vote (propensity to vote). We test the hypotheses of a coherent vs incoherent ideological space by looking at the structure of voters’ preferences on economic (State vs. free market) as well as cultural issues (individual rights, attitudes towards minorities, European integration) and the differences between young people and older component of the electorate. The analysis is focused on the Italian case. Data are taken from the 2020 Itanes survey.
Mass Balance Method for Purity Assessment for Pesticide Analytical Standards
Authors: Kim Seung-Hwan , Kim Byungjoo , Joo Kwangguk , Ji Su-Eon , Chung Dae-Won , Lee Seok-Ki
Published: October 2021

Imazamox, a widely used herbicide, is currently managed by the Pesticide MRLs and Positive List System of the Ministry of Food and Drug Safety, and the development of reliable standard materials for analysis is urgently required. To confirm the reliability of the mass balance method, we measured the purity of the imazamox reference material (RM) certified by an RM producer accredited with ISO Guide 34 and estimated measurement uncertainty. According to this method, the content of structurally similar organic impurities was measured using high-performance liquid chromatographic coupled with ultraviolet (HPLC-UV), and the moisture, volatile impurities, and non-volatile impurities were quantitatively analyzed using a thermogravimetric analyzer (TGA). Purity and measurement uncertainty were calculated based on analysis of the HPLC-UV and TGA results obtained, and the validity of these values was confirmed by comparing with the values provided in the RM certificate.
Evaluation of Health Risk from Concentrations of Heavy Metal in PM-10 and PM-2.5 particles at Sasang Industrial Complex of Busan, Korea
Authors: Choi Seong-Hwa , Choi Seong-Woo , Kim Dong-Yeong , Cha Young-Wook , Park Seung-Woo , Lee Seo-I , Yoo Eun-Chul
Published: October 2021

We investigated the distribution of hazardous heavy metals (As, Cr6+, Ni, Cd, Pb, and Mn) and estimated the health risk related to the heavy metals in fine dust (PM-10 and PM-2.5) of Sasang industrial complex, Busan, Korea. The concentration of fine dust in the industrial complex was 1.2 times higher than in a residential area, while harmful heavy metals showed a difference of at least 1.3 times (Cd) and up to 6.5 times (Ni). The concentration of fine dust and carcinogenic heavy metals in the industrial complex increased significantly compared to the residential area in spring (March to May) and winter (December to February) months. A risk assessment was performed using Monte-Carlo simulations containing a four-step procedure. During hazard identification, As, Cr6+ Ni, Cd, and Pb were categorized as human carcinogens and probable human carcinogens and evaluated for their levels of excess cancer risk. For concentrations of over 90% Cr6+ and As, the excess cancer risk was over 10-5 (1 person per 100,000). The non-cancer hazard index of As, Cr6+, Cd, and Mn was below the limit value of 1.
Os desafios enfrentados pelos professores de educação física na rede estadual de ensino de Ponta Grossa – Paraná
Authors: Cordeiro Mariana Gaburro , Sousa Diego Petyk de , Paula Erica Fernanda de , Antunes Alfredo Cesar
Published: October 2021

OBJETIVO: Considerando as dificuldades presentes no ambiente escolar, o presente texto teve como objetivo identificar os desafios da profissão docente enfrentados pelos professores de Educação Física atuantes na Rede Estadual de Ensino da cidade de Ponta Grossa - Paraná. MÉTODOS: Para tanto, foram entrevistados doze professores de Educação Física e os dados foram analisados com o auxílio do software Iramuteq. RESULTADOS: Com os resultados foi possível observar que: os professores apresentam dificuldade em trabalhar com alguns conteúdos do currículo, principalmente os que exigem materiais diversificados, como esportes de aventura e jogos eletrônicos; as condições de trabalho não são consideradas ideais, principalmente no que refere-se a materiais e espaço; os professores consideram que alguns desafios enfrentados são característicos das escolas públicas; ainda há certa resistência dos alunos quanto as aulas teóricas; há relatos que indicam desvalorização da disciplina, se comparada com as demais. CONCLUSÃO: Com isso, pôde-se constatar que os resultados encontrados em Ponta Grossa foram semelhantes aos identificados em estudos anteriores, o que demonstra que apesar dos anos, alguns desafios permanecem. Além disso, acrescenta-se a dificuldade de trabalhar com os conteúdos propostos pela Base Nacional Comum Curricular e Currículo da Rede Estadual Paranaense, que são considerados novos tanto para os professores, como para os alunos.
МАРКЕТИНГОВІ ДОСЛІДЖЕННЯ У СФЕРІ ГОТЕЛЬНО-РЕСТОРАННОГО І ТУРИСТИЧНОГО БІЗНЕСУ: ПРОБЛЕМИ І НЕДОЛІКИ
Authors: Барна М. Ю. , Гліненко Л. К. , Дайновський Ю. А.
Published: October 2021

Стаття присвячена питанням організації, змісту і логіки маркетингових досліджень у сфері готельно-ресторанного та туристичного бізнесу. Метою статті є систематизація помилок, що мають місце у маркетингових дослідженнях для мінімізації у майбутньому їх кількості і негативного впливу на підприємницькі рішення. Проаналізовані типові помилки у маркетингових дослідженнях, серед яких: опитування разових, випадкових клієнтів як постійних; надмірна кількість груп, на які розбиваються респонденти; неврахування унікальності закладів і поліфакторності їх вибору споживачами; постановка більшої, ніж необхідно, кількості питань; переоцінка рівня кваліфікації респондентів у предметі дослідження; використання закритих запитань у ситуаціях, коли можливими є багато варіантів відповідей респондентів; об’єднання декількох запитань в одному; відсутність націленості дослідження на конкретні управлінські рішення; постановка недосяжних цілей; недостовірність і нерепрезентативність інформації, на підставі якої можуть прийматися рішення у сфері туристичного і готельно-ресторанного бізнесу. На підставі аналізу низки сайтів обґрунтовано «годинник» конкурентоспроможного сайту, який повинен містити 12 блоків, що є обов’язковими з точки зору впливу на потенційних замовників. Підкреслено, що подальші дослідження доцільно було б спрямувати на регулярний моніторинг здійснюваних маркетингових досліджень і узагальнення типів можливих помилок з метою їх недопущення у майбутньому.
КОНЦЕПТУАЛЬНІ ЗАСАДИ РОЗВИТКУ СОЦІАЛЬНОГО ТУРИЗМУ В УКРАЇНІ
Authors: Роговий А. В. , Забаштанський М. М.
Published: October 2021

Узагальнення існуючих концептуальних підходів до розуміння сутності та значення соціального туризму в розвитку національної економіки дозволило розкрити ключові тенденції розвитку, визначити його структурні елементи, поглибити сутність дефініції «соціальний туризм» під якою запропоновано розуміти створення можливостей для незабезпечених верств населення отримати туристичні послуги та задовольнити право на відпочинок за рахунок соціальних видатків держави, недержавних фондів, коштів благодійних організацій з метою відновлення продуктивних сил та збереження здоров’я суспільства. Охарактеризовано наукові підходи до розуміння складових принципів (цільового спрямування, доступності та своєчасності, гуманізму, системності та безповоротності, економічної доцільності) та функцій (соціальна, економічна, культурна) соціального туризму. Зроблено висновок про доцільність активізації процесів розвитку соціального туризму в країні та розробки відповідної концепції інкорпорованої до національної стратегії соціально-економічного розвитку держави.
SUBSTANTIATION OF ELEMENTS AND STRUCTURE OF ORGANIZATIONAL AND ECONOMIC MECHANISM OF INTERNET MARKETING FOR DEVELOPING TOURISM ENTERPRISES ON INNOVATIVE PRINCIPLES
Authors: Biletska Iryna
Published: October 2021

Perspective directions in strategizing the Internet marketing policy for innovative development of tourism enterprises are formed. A methodological approach has been developed and proposed, which allows to effectively and on an institutional basis combine opposite strategic vectors of activating Internet marketing of innovation: external vector (when a company focuses on innovation, related to trends in market demand and external need for innovation) and internal vector (when the path of innovative development and activity is determined by internal potential and financial resource capacity). Thus, the peculiarity of the author's approach is in the identification of organizational-managerial, information-technological, integrated, financial-investment, marketing, immanent, infrastructural, cluster and interactive spatial-network directions of innovative development with clear signs of synergy. The applied significance of the research is to determine the strategic concept and design a structure of the organizational and economic mechanism for improving Internet marketing of tourism enterprises on an innovative basis, as well as to substantiate the provisions of the organizational and economic mechanism of tourism development on an innovative basis. The scientific novelty of the research results is that the developed tools of policy of formation and implementation of organizational and economic mechanism of Internet marketing for the tourism enterprise development on innovative principles based on new tools and concepts of system and complexity of their combination, traditional substantiation of a set of proposals for the organization and control of innovation, the introduction of a number of economic incentives and motives for its internal and external actors. Such innovative principles allowed to substantiate the essential-typological and applied characteristics of functional and structural elements of the organizational-economic mechanism: institutional-legal base, administrative-functional apparatus, information-analytical block, scientific-technical support, financial-investment support, market-interface superstructure, intellectual-personnel component and logistics.
Ratlarda Siklofosfamid ile Deneysel Olarak Oluşturulan Anemi Modelinde Smilax excelsa L. Etanol Ekstresinin Etkisi
Authors: CELLAT Mustafa , AYDIN Tuba
Published: October 2021

Bu çalışmada, ratlarda siklofosfamid (CP) ile deneysel olarak oluşturulan anemi modelinde Smilax excelsa L. etanol ekstresinin etkisi araştırıldı. Çalışma toplam 4 gruptan oluştu. Grup 1 ve 2’deki ratlara oral gavaj yöntemi kullanılarak 28 gün süre ile günlük 1 ml serum fizyolojik, grup 3 ve 4’deki ratlara ise 400 mg/kg dozda Smilax excelsa L. etanol ekstresi uygulandı. Ayrıca grup 2 ve 4’deki ratlara haftada bir kez olmak üzere toplam dört doz 50 mg/kg CP uygulaması intramusküler olarak yapıldı. Çalışmanın 28. günü bütün ratlardan anestezi altında kan örnekleri alındı ve daha sonra ötanazi işlemi uygulandı. Kan örneklerinde eritrosit sayısı (RBC), lökosit sayısı (WBC), hemoglobin konsantrasyonu (HGB), hematokrit değer (Hct), ortalama eritrosit hemoglobini (MCH), ortalama eritrosit hacmi (MCV) ve ortalama eritrosit dağılım genişliği (RDW) gibi hematolojik parametreler incelendi. Serum malondialdehit (MDA) ve indirgenmiş glutatyon (GSH) düzeyleri ile katalaz (CAT) ve glutatyonperoksidaz (GSH-Px) enzim aktivitelerine spektrofotometrik olarak bakıldı. Grup 4’de Smilax excelsa L. etanol ekstresi tedavisinin serum MDA düzeyini düşürdüğü, CAT ve GSH-Px enzim aktivitelerini ise arttırdığı belirlendi. Ayrıca bu tedavinin RBC, HGB ve Hct gibi hematolojik parametrelerde iyileşmelere sebep olduğu, RDW değerlerini ise azalttığı gözlemlendi. Sonuç olarak Smilax excelsa’nın sahip olduğu güçlü antioksidan etki ile CP’nin kemik iliğindeki baskılayıcı etkisini azalttığı ve anemi şekillenmesini önlediği görüldü.
Editorial
Authors: Alvim Davis Moreira , Malacarne Robson
Published: October 2021

A Revista Eletrônica Debates em Educação Científica e Tecnológica (DECT) é resultado do trabalho coletivo que envolve professores do Programa de Pós-graduação em Educação em Ciências e Matemática (Educimat) e do Programa de Pós-graduação em Ensino de Humanidades (PPGEH). A DECT publica textos científicos produzidos em língua portuguesa ou espanhola, nos formatos de artigos científicos (empírico, experimental ou teórico), ensaios e resenhas de livro e de tese/dissertações, organizados em seis linhas temáticas norteadas pelo texto central, a saber: a) ensino de ciências e matemática, b) ensino de humanidades, c) formação inicial e continuada de professores, d) tecnologias educacionais e recursos didáticos, e) educação profissional, e f) diversidade e inclusão social, todos no contexto da educação científica e tecnológica.
DIVULGAÇÃO CIENTÍFICA NA ÁREA DE EDUCAÇÃO E AFINS: ESTUDO EXPLORATÓRIO DAS PUBLICAÇÕES DA FACED/UFRGS
Authors: Clipes Ferreira Ana Gabriela , Duval Wannmacher Clóvis Milton
Published: October 2021

A divulgação científica produzida e inserida pela comunidade interdisciplinar da Faculdade de Educação da UFRGS é o tema deste artigo. Discute brevemente a importância da divulgação e popularização da ciência. Tem como objetivo geral a análise da produção científica e técnica em artigos de divulgação entre 2000 e 2014. Já os objetivos secundários são verificar os títulos e temáticas mais recorrentes e tecer considerações sobre o assunto. É um estudo descritivo e quantitativo, que teve os dados coletados da produção intelectual depositada no Sistema de Bibliotecas da UFRGS e tratados em planilha eletrônica. Como resultados, foram encontrados 139 artigos, menos de 1% da produção total. A pesquisa atendeu aos objetivos e foi possível ser realizada somente por ser coletada em uma base de dados não convencional para o tipo de estudos, que também incluiu um tipo de documento não analisado em estudos de produtividade, uma vez que não possuem o mesmo prestígio que os documentos tradicionalmente indexados em bases de dados de prestígio.
UTILIZANDO A EXPERIMENTAÇÃO PARA TRABALHAR OS ESTADOS FÍSICOS E A TRANSFORMAÇÃO DA MATÉRIA: UMA REVISÃO DE LITERATURA
Authors: De Oliveira Henrique José , Dos Santos Soares Leornardo Moura
Published: October 2021

Muito se tem discutido a respeito da importância das aulas de Ciências Naturais, bem como a importância de que o professor utilize metodologias além do ensino tradicional. Analisamos como os professores de ciências da educação básica utilizam a experimentação para trabalhar os estados físicos e a transformação da matéria em suas aulas. Para a realização deste trabalho utilizamos a pesquisa do tipo bibliográfica e qualitativa, possibilitando conhecer como a experimentação está sendo utilizada na sala de aula durante as aulas de ciências. Após a análise dos trabalhos, o que ficou mais evidente foi que a experimentação pode e deve ser utilizada na sala de aula, pois tanto alunos quanto professores destacaram a sua importância. Portanto, enfatizamos a relevância das aulas práticas em Ciências Naturais, pois elas contribuem para um processo de ensino e aprendizagem mais dinâmicos e significativo.
PRÁTICAS EM GEOCIÊNCIAS: CARACTERIZAÇÃO MORFOLÓGICA E GEOTÉCNICA IN SITU DE PERFIS DE INTEMPERISMO DE ARENITOS DA BACIA DO PARANÁ NO TRIÂNGULO MINEIRO (MG)
Authors: Gonçalvez de Freitas Lilian Gabriella Batista , Gomes Marques Eduardo Antônio
Published: October 2021

Este artigo apresenta os resultados de um estudo da morfologia de oito perfis de intemperismo desenvolvidos em alguns arenitos sob condições climáticas tropicais na região de Uberaba, no Estado de Minas Gerais, onde é possível observar características geológicas cuja análise contribuem para o ensino e aprendizado por meio de atividades práticas. Trata-se de uma pesquisa qualitativa, de campo, com coleta de amostras e análise de laboratório à luz das referências. O artigo contém dados, como a descrição de cada afloramento, bem como caracterização geotécnica in situ detalhada e registros fotográficos podendo levar a uma compreensão mais aprofundada dos conteúdos. Entre os oito afloramentos visitados, três foram selecionados com foco em diferentes classes de intemperismo, incluindo várias características da matriz das rochas e do perfil geológico como um todo. Os resultados mostram que os perfis de intemperismo dos arenitos apresentam uma fina camada de solo na porção superior dos perfis, os contatos entre diferentes camadas de material são tipicamente abruptos. Um forte controle estrutural sobre o intemperismo das rochas pode ser observado nos afloramentos, representado pela presença de juntas de alívio de tensão paralelas ao acamamento. Este controle desempenha um papel importante na diferenciação das camadas de rocha e nas classes de intemperismo. Finalmente, os parâmetros de dureza provaram serem úteis para a distinção de diferentes materiais intemperizados, principalmente quando relacionados com o estudo da matriz rochosa.
A CONSTITUIÇÃO DE SI EM PROFESSORES DO ENSINO MÉDIO TÉCNICO INTEGRADO: ARTICULAÇÕES ENTRE SUBJETIVIDADE, GOVERNAMENTALIDADE E NEOLIBERALISMO
Authors: Lima Rodriguez Breno , Bastos de Sá Marcia , De Oliveira Figueiredo Gustavo
Published: October 2021

Neste trabalho, debruçamo-nos sobre as formas pelas quais alguns docentes do ensino básico técnico e tecnológico (EBTT) criam seus itinerários de construção de si por meio da possibilidade de vislumbrar seus processos de subjetivação e a influência deles, se houver, nas relações tecidas pelos docentes entre suas trajetórias pessoais e de formação e de trabalho tendo como base metodológica as conversações estimuladas por um roteiro de entrevista semidiretiva. Trazemos relatos que nos chamaram a atenção desde sua produção pelos dez professores de uma escola federal que já atuaram, ou ainda atuam, no ensino médio integrado ao técnico. Como arcabouço teórico para conversar com nossos parceiros de pesquisa adotaremos o pensamento de Michel Foucault e Félix Guattari, usando como recorte para a discussão as técnicas de sujeição impostas pela governamentalidade neoliberal e os enfrentamentos com os quais os docentes se deparam.