bluuebunny/crossref_metadata_2025 huggingface dataset:
A New Physically-Based Spatially-Distributed Groundwater Flow Module for SWAT+
Authors: Bailey Ryan , Bieger Katrin , Arnold Jeffrey , Bosch David
Published: October 2020

Watershed models are used worldwide to assist with water and nutrient management under conditions of changing climate, land use, and population. Of these models, the Soil and Water Assessment Tool (SWAT) and SWAT+ are the most widely used, although their performance in groundwater-driven watersheds can sometimes be poor due to a simplistic representation of groundwater processes. The purpose of this paper is to introduce a new physically-based spatially-distributed groundwater flow module called gwflow for the SWAT+ watershed model. The module is embedded in the SWAT+ modeling code and is intended to replace the current SWAT+ aquifer module. The model accounts for recharge from SWAT+ Hydrologic Response Units (HRUs), lateral flow within the aquifer, Evapotranspiration (ET) from shallow groundwater, groundwater pumping, groundwater–surface water interactions through the streambed, and saturation excess flow. Groundwater head and groundwater storage are solved throughout the watershed domain using a water balance equation for each grid cell. The modified SWAT+ modeling code is applied to the Little River Experimental Watershed (LREW) (327 km2) in southern Georgia, USA for demonstration purposes. Using the gwflow module for the LREW increased run-time by 20% compared to the original SWAT+ modeling code. Results from an uncalibrated model are compared against streamflow discharge and groundwater head time series. Although further calibration is required if the LREW model is to be used for scenario analysis, results highlight the capabilities of the new SWAT+ code to simulate both land surface and subsurface hydrological processes and represent the watershed-wide water balance. Using the modified SWAT+ model can provide physically realistic groundwater flow gradients, fluxes, and interactions with streams for modeling studies that assess water supply and conservation practices. This paper also serves as a tutorial on modeling groundwater flow for general watershed modelers.
The Discovery of Highly Potent THP Derivatives as OCTN2 Inhibitors: From Structure-Based Virtual Screening to In Vivo Biological Activity
Authors: Di Cristo Francesca , Calarco Anna , Digilio Filomena Anna , Sinicropi Maria Stefania , Rosano Camillo , Galderisi Umberto , Melone Mariarosa Anna Beatrice , Saturnino Carmela , Peluso Gianfranco
Published: October 2020

A mismatch between β-oxidation and the tricarboxylic acid cycle (TCA) cycle flux in mitochondria produces an accumulation of lipid metabolic intermediates, resulting in both blunted metabolic flexibility and decreased glucose utilization in the affected cells. The ability of the cell to switch to glucose as an energy substrate can be restored by reducing the reliance of the cell on fatty acid oxidation. The inhibition of the carnitine system, limiting the carnitine shuttle to the oxidation of lipids in the mitochondria, allows cells to develop a high plasticity to metabolic rewiring with a decrease in fatty acid oxidation and a parallel increase in glucose oxidation. We found that 3-(2,2,2-trimethylhydrazine)propionate (THP), which is able to reduce cellular carnitine levels by blocking both carnitine biosynthesis and the cell membrane carnitine/organic cation transporter (OCTN2), was reported to improve mitochondrial dysfunction in several diseases, such as Huntington’s disease (HD). Here, new THP-derived carnitine-lowering agents (TCL), characterized by a high affinity for the OCTN2 with a minimal effect on carnitine synthesis, were developed, and their biological activities were evaluated in both in vitro and in vivo HD models. Certain compounds showed promising biological activities: reducing protein aggregates in HD cells, ameliorating motility defects, and increasing the lifespan of HD Drosophila melanogaster.
The Crucial Role of Xanthine Oxidase in CKD Progression Associated with Hypercholesterolemia
Authors: Kim You-Jin , Oh Se-Hyun , Ahn Ji-Sun , Yook Ju-Min , Kim Chan-Duck , Park Sun-Hee , Cho Jang-Hee , Kim Yong-Lim
Published: October 2020

In the present study, we investigated the effects of xanthine oxidase (XO) inhibition on cholesterol-induced renal dysfunction in chronic kidney disease (CKD) mice, and in low-density lipoprotein (LDL)-treated human kidney proximal tubule epithelial (HK-2) cells. ApoE knockout (KO) mice underwent uninephrectomy to induce CKD, and were fed a normal diet or high-cholesterol (HC) diet along with the XO inhibitor topiroxostat (1 mg/kg/day). HK-2 cells were treated with LDL (200 µg/mL) and topiroxostat (5 µM) or small interfering RNA against xanthine dehydrogenase (siXDH; 20 nM). In uninephrectomized ApoE KO mice, the HC diet increased cholesterol accumulation, oxidative stress, XO activity, and kidney damage, while topiroxostat attenuated the hypercholesterolemia-associated renal dysfunction. The HC diet induced cholesterol accumulation by regulating the expressions of genes involved in cholesterol efflux (Nr1h3 and Abca1) and synthesis (Srebf2 and Hmgcr), which was reversed by topiroxostat. Topiroxostat suppressed the expressions of genes related to hypercholesterolemia-associated inflammation and fibrosis in the unilateral kidney. LDL stimulation evoked changes in the cholesterol metabolism, nicotinamide adenine dinucleotide phosphate (NADPH) oxidase, and NF-κB pathways in HK-2 cells, which were mitigated by XO inhibition with topiroxostat or siXDH. These findings suggest that XO inhibition exerts renoprotective effects against hypercholesterolemia-associated kidney injury. XO could be a novel therapeutic target for hypercholesterolemia-associated kidney injury in uninephrectomized patients.
Usability in Patient-Oriented Drug Interaction Checkers—A Scandinavian Sampling and Heuristic Evaluation
Authors: Vingen David , Andrews Elias J. , Ferati Mexhid
Published: October 2020

Drug interactions are an important source of medical error and a topic of particular interest to patient audiences. Patients must be informed to be able to participate in decision-making affecting their health. This paper explores the availability of drug interaction checkers in Scandinavia and the prevalence and characteristics of usability issues preventing patients from benefiting from them. Drug interaction checkers were sampled and evaluated through heuristic evaluations. Issue-based data were analyzed through descriptive statistics, as well as single-case and cross-case qualitative analyses. The findings were interpreted side-by-side using a mixed-methods approach. The results showed a multitude of usability issues. Catastrophic issues indicating the safety of dangerous drug pairings were found in two of the checkers. Results also showed that the checkers lacked adaptive design, patient-oriented content, and adherence to basic design principles. A positive correlation was observed between system complexity and number of usability issues. We suggest that this comes from a lack of systematic design approach. The market for Scandinavian drug interaction checkers was as such characterized by a limited selection of checkers known to be used by patients for their utility, but failing to accommodate them in terms of system quality.
Surfaces of Revolution and Canal Surfaces with Generalized Cheng–Yau 1-Type Gauss Maps
Authors: Qian Jinhua , Fu Xueshan , Tian Xueqian , Kim Young Ho
Published: October 2020

In the present work, the notion of generalized Cheng–Yau 1-type Gauss map is proposed, which is similar to the idea of generalized 1-type Gauss maps. Based on this concept, the surfaces of revolution and the canal surfaces in the Euclidean three-space are classified. First of all, we show that the Gauss map of any surfaces of revolution with a unit speed profile curve is of generalized Cheng–Yau 1-type. At the same time, an oriented canal surface has a generalized Cheng–Yau 1-type Gauss map if, and only if, it is an open part of a surface of revolution or a torus.
Structure of the Polysaccharide Secreted by Vibrio alginolyticus CNCM I-5035 (Epidermist 4.0TM)
Authors: Drouillard Sophie , Chambon Rémi , Jeacomine Isabelle , Buon Laurine , Boisset Claire , Courtois Anthony , Thollas Bertrand , Morvan Pierre-Yves , Vallée Romuald , Helbert William
Published: October 2020

Vibrio alginolyticus (CNCM I-5035) secretes an exopolysaccharide used as ingredient in cosmetic industry under the trademark Epidermist 4.0TM. It is appreciated for its ability to improve the physical and chemical barrier functions of the skin by notably increasing the keratinocyte differentiation and epidermal renewal. Composition analyses and in depth characterization of the polysaccharides as well as oligosaccharides obtained by mild acid hydrolyses revealed that it was composed of a repetition unit of three residues: d-galactose (d-Gal), d-N-acetylglucosamine (GlcNAc) and l-N-acetylguluronic acid, of which 30% (M/M) was acetylated in position 3. The complete structure of the polysaccharide was resolved giving the repetition unit: [→3)-α-d-Gal-(1→4)-α-l-GulNAcA/α-l-3OAc-GulNAcA-(1→4)-β-d-GlcNAc-(1→].
Blue Mussel-Derived Peptides PIISVYWK and FSVVPSPK Trigger Wnt/β-Catenin Signaling-Mediated Osteogenesis in Human Bone Marrow Mesenchymal Stem Cells
Authors: Oh Yunok , Ahn Chang-Bum , Je Jae-Young
Published: October 2020

Marine-derived bioactive peptides have shown potential bone health promoting effects. Although various marine-derived bioactive peptides have potential nutraceutical or pharmaceutical properties, only a few of them are commercially available. This study presented an osteogenic mechanism of blue mussel-derived peptides PIISVYWK and FSVVPSPK as potential bone health promoting agents in human bone marrow-derived mesenchymal stem cells (hBMMSCs). Alkaline phosphatase (ALP) activity and mineralization were stimulated using PIISVYWK and FSVVPSPK as early and late markers of osteogenesis in a concentration-dependent manner. Western blot and RT-qPCR results revealed that PIISVYWK and FSVVPSPK increased osteoblast differentiation of hBMMSCs by activating canonical Wnt/β-catenin signaling-related proteins and mRNAs. Immunofluorescence images confirmed nuclear translocation of β-catenin in osteogenic differentiation. Treatment with the pharmacological inhibitor DKK-1 blocked PIISVYWK- and FSVVPSPK-induced ALP activity and mineralization, as well as mRNA expression of the canonical Wnt/β-catenin signaling pathway in hBMMSC differentiation into osteoblasts. These findings suggested that PIISVYWK and FSVVPSPK promoted the canonical Wnt/β-catenin signaling pathway in osteogenesis of hBMMSCs. Blue mussel-derived PIISVYWK and FSVVPSPK might help develop peptide-based therapeutic agents for bone-related diseases.
A Novel Approach for Measurement of Composition and Temperature of N-Decane/Butanol Blends Using Two-Color Laser-Induced Fluorescence of Nile Red
Authors: Koegl Matthias , Pahlevani Mohammad , Zigan Lars
Published: October 2020

In this work, the possibility of using a two-color LIF (laser-induced fluorescence) approach for fuel composition and temperature measurements using nile red dissolved in n-decane/butanol blends is investigated. The studies were conducted in a specially designed micro cell enabling the detection of the spectral LIF intensities over a wide range of temperatures (283–423 K) and butanol concentrations (0–100 vol.%) in mixtures with n-decane. Furthermore, absorption spectra were analyzed for these fuel mixtures. At constant temperature, the absorption and LIF signals exhibit a large spectral shift toward higher wavelengths with increasing butanol concentration. Based on this fact, a two-color detection approach is proposed that enables the determination of the butanol concentration. This is reasonable when temperature changes and evaporation effects accompanied with dye enrichment can be neglected. For n-decane, no spectral shift and broadening of the spectrum are observed for various temperatures. However, for butanol admixture, two-color thermometry is possible as long as the dye and butanol concentrations are kept constant. For example, the LIF spectrum shows a distinct broadening for B20 (i.e., 80 vol.% n-decane, 20 vol.% butanol) and a shift of the peak toward lower wavelengths of about 40 nm for temperature variations of 140 K.
Characterization of a Low-Cost Plastic Fiber Array Detector for Proton Beam Dosimetry
Authors: Ozkan Loch Cigdem , Eichenberger Michael Alexander , Togno Michele , Zinsli Simon Pascal , Egloff Martina , Papa Angela , Ischebeck Rasmus , Lomax Antony John , Peier Peter , Safai Sairos
Published: October 2020

The Pencil Beam Scanning (PBS) technique in proton therapy uses fast magnets to scan the tumor volume rapidly. Changing the proton energy allows changing to layers in the third dimension, hence scanning the same volume several times. The PBS approach permits adapting the speed and/or current to modulate the delivered dose. We built a simple prototype that measures the dose distribution in a single step. The active detection material consists of a single layer of scintillating fibers (i.e., 1D) with an active length of 100 mm, a width of 18.25 mm, and an insignificant space (20 μm) between them. A commercial CMOS-based camera detects the scintillation light. Short exposure times allow running the camera at high frame rates, thus, monitoring the beam motion. A simple image processing method extracts the dose information from each fiber of the array. The prototype would allow scaling the concept to multiple layers read out by the same camera, such that the costs do not scale with the dimensions of the fiber array. Presented here are the characteristics of the prototype, studied under two modalities: spatial resolution, linearity, and energy dependence, characterized at the Center for Proton Therapy (Paul Scherrer Institute); the dose rate response, measured at an electron accelerator (Swiss Federal Institute of Metrology).
Robotic Localization Based on Planar Cable Robot and Hall Sensor Array Applied to Magnetic Capsule Endoscope
Authors: Kim Min-Cheol , Kim Eui-Sun , Park Jong-Oh , Choi Eunpyo , Kim Chang-Sei
Published: October 2020

Recently an active locomotive capsule endoscope (CE) for diagnosis and treatment in the digestive system has been widely studied. However, real-time localization to achieve precise feedback control and record suspicious positioning in the intestine is still challenging owing to the limitation of capsule size, relatively large diagnostic volume, and compatibility of other devices in clinical site. To address this issue, we present a novel robotic localization sensing methodology based on the kinematics of a planar cable driven parallel robot (CDPR) and measurements of the quasistatic magnetic field of a Hall effect sensor (HES) array. The arrangement of HES and the Levenberg-Marquardt (LM) algorithm are applied to estimate the position of the permanent magnet (PM) in the CE, and the planar CDPR is incorporated to follow the PM in the CE. By tracking control of the planar CDPR, the position of PM in any arbitrary position can be obtained through robot forward kinematics with respect to the global coordinates at the bedside. The experimental results show that the root mean square error (RMSE) for the estimated position value of PM was less than 1.13 mm in the X, Y, and Z directions and less than 1.14° in the θ and φ orientation, where the sensing space could be extended to ±70 mm for the given 34 × 34 mm2 HES array and the average moving distance in the Z-direction is 40 ± 2.42 mm. The proposed method of the robotic sensing with HES and CDPR may advance the sensing space expansion technology by utilizing the provided single sensor module of limited sensible volume.
Deep Learning-Based Violin Bowing Action Recognition
Authors: Sun Shih-Wei , Liu Bao-Yun , Chang Pao-Chi
Published: October 2020

We propose a violin bowing action recognition system that can accurately recognize distinct bowing actions in classical violin performance. This system can recognize bowing actions by analyzing signals from a depth camera and from inertial sensors that are worn by a violinist. The contribution of this study is threefold: (1) a dataset comprising violin bowing actions was constructed from data captured by a depth camera and multiple inertial sensors; (2) data augmentation was achieved for depth-frame data through rotation in three-dimensional world coordinates and for inertial sensing data through yaw, pitch, and roll angle transformations; and, (3) bowing action classifiers were trained using different modalities, to compensate for the strengths and weaknesses of each modality, based on deep learning methods with a decision-level fusion process. In experiments, large external motions and subtle local motions produced from violin bow manipulations were both accurately recognized by the proposed system (average accuracy > 80%).
Validity of a Local Positioning System during Outdoor and Indoor Conditions for Team Sports
Authors: Alt Prisca S. , Baumgart Christian , Ueberschär Olaf , Freiwald Jürgen , Hoppe Matthias W.
Published: October 2020

This study aimed to compare the validity of a local positioning system (LPS) during outdoor and indoor conditions for team sports. The impact of different filtering techniques was also investigated. Five male team sport athletes (age: 27 ± 2 years; maximum oxygen uptake: 48.4 ± 5.1 mL/min/kg) performed 10 trials on a team sport-specific circuit on an artificial turf and in a sports hall. During the circuit, athletes wore two devices of a recent 20-Hz LPS. From the reported raw and differently filtered velocity data, distances covered during different walking, jogging, and sprinting sections within the circuit were computed for which the circuit was equipped with double-light timing gates as criterion measures. The validity was determined by comparing the known and measured distances via the relative typical error of estimate (TEE). The LPS validity for measuring distances covered was good to moderate during both environments (TEE: 0.9–7.1%), whereby the outdoor validity (TEE: 0.9–6.4%) was superior than indoor validity (TEE: 1.2–7.1%). During both environments, validity outcomes of an unknown manufacturer filter were superior (TEE: 0.9–6.2%) compared to those of a standard Butterworth filter (TEE: 0.9–6.4%) and to unprocessed raw data (TEE: 1.0–7.1%). Our findings show that the evaluated LPS can be considered as a good to moderately valid tracking technology to assess running-based movement patterns in team sports during outdoor and indoor conditions. However, outdoor was superior to indoor validity, and also impacted by the applied filtering technique. Our outcomes should be considered for practical purposes like match and training analyses in team sport environments.
An Efficient Two-Factor Authentication Scheme Based on the Merkle Tree
Authors: Yin Xinming , He Junhui , Guo Yi , Han Dezhi , Li Kuan-Ching , Castiglione Arcangelo
Published: October 2020

The Time-based One-Time Password (TOTP) algorithm is commonly used for two-factor authentication. In this algorithm, a shared secret is used to derive a One-Time Password (OTP). However, in TOTP, the client and the server need to agree on a shared secret (i.e., a key). As a consequence, an adversary can construct an OTP through the compromised key if the server is hacked. To solve this problem, Kogan et al. proposed T/Key, an OTP algorithm based on a hash chain. However, the efficiency of OTP generation and verification is low in T/Key. In this article, we propose a novel and efficient Merkle tree-based One-Time Password (MOTP) algorithm to overcome such limitations. Compared to T/Key, this proposal reduces the number of hash operations to generate and verify the OTP, at the cost of small server storage and tolerable client storage. Experimental analysis and security evaluation show that MOTP can resist leakage attacks against the server and bring a tiny delay to two-factor authentication and verification time.
Citizenship Training through sMOOCs: A Participative and Intercreative Learning
Authors: Gil-Quintana Javier , Osuna-Acedo Sara
Published: October 2020

sMOOCs (social massive open online courses) have revealed themselves as a remarkable opportunity to foster the culture of participation and open knowledge and sustainability. Due to their communicative potential, they make it possible for participants to interact, to create ubiquitous learning, and to build knowledge in a collective way. This educational and communicative line has set the basis for the European ECO (e-learning, communication, open data) Project, i.e., the purpose of our study, which, beyond training teachers, is decidedly betting on open life-long education. The results presented in the study have been elicited by following a quantitative methodology, through the analysis of a “sMOOC Step by Step” community, intended to become an educational gate to students’ empowerment, shared knowledge, and participation in the course. Results show that collaborative work practices organized by teachers in that virtual learning community encourage educational changes. Both the degree of satisfaction with the learning achieved and the way students perceive its direct applicability to real-life professional contexts prove the effectiveness of this training model. Our research has expanded, aiming to discover sMOOCs opportunities for teacher training and assessing the motivation shown by the virtual learning community towards such an educational reality.
Pelatihan Pembuatan Media Pembelajaran Di PGRI Kecamatan Cisarua
Authors: Maulana Hanhan , Afrianto Irawan , Setiyadi Angga , Agustia Richi Dwi , Hirawan Dedeng
Published: October 2020

ABSTRACT

The purpose of this community service is to improve the quality of the teaching staff by conducting training for making learning media and learning applications to calculate student scores. This activity used 2 methods, first was the provision of basic knowledge then continued by the direct practice carried out by the participants. This training was divided into 4 sessions, the first session was an introduction to the basic components of the Windows operating system, the second session was learning Microsoft Word, the third session was learning processing scores with Microsoft Excel and the last session was making learning media using Microsoft Power point. Training material was given by the instructor, assisted by a mentor who accompanied the participants in following the material presented. Evaluation was done by giving questions in the form of case study. The trainees completed the case study with the timeframe given by each instructor. Based on the results of the evaluation and observation of the enthusiasm of the participants, it can be concluded that the training was in accordance with the expected objectives. By participating in this training, teachers had the ability to use computers to support their work in carrying out education and teaching in schools.

Keywords: Community Service, Learning Media, Student Score Calculations, Microsoft Office Application, Teaching and Education

 

ABSTRAK

Tujuan dari pengabdian kepada masyarakat ini adalah Meningkatkan kualitas tenaga kependidikan dengan mengadakan pelatihan pembuatan media pembelajaran dan mempelajari aplikasi pengolahan nilai. Pengabdian kepada masyarakat ini menggunakan dua metode pertama adalah  pemberian materi kemudian dilanjutkan dengan  praktek langsung yang di lakukan oleh peserta. Pelatihan ini dibagi menjadi 4 sesi, sesi pertama adalah pengenalan terhadap komponen komponen dasar sitem operasi windows, sesi kedua adalah pembelajaran microsoft word, sesi ketiga adalah pembelajaran pengolahan nilai dengan microsoft excel dan sesi terakhir adalah pembuatan media pembelajaran menggunakan microsoft powerpoint. Materi pelatihan diberikan oleh pemateri dibantu dengan pendamping yang akan mendampingi peserta dalam mengikuti materi yang disampaikan. Evaluasi dilakukan dengan memberikan contoh soal berupa studi kasus. Peserta pelatihan  menyelesaikan soal dengan rentan waktu yang di berikan oleh masing masing pemateri. Berdasarkan hasil evaluasi dan pengamatan terhadap antusiasme peserta dapat disimpulkan bahwa pelatihan ini sudah sesuai dengan tujuan yang diharapkan. Dengan pemberian pelatihan ini guru-guru di lingkungan PGRI Kec. Cisarua memiliki kemampuan dalam menggunakan perangkat komputer dalam mendukung tugasnya dalam melaksanakan pendidikan dan pengajaran di sekolah.

Kata kunci: Pengabdian kepada masyarakat, Media pembelajaran, Pengolahan nilai siswa,  Pelatihan penggunaan aplikasi Microsoft, Pendidikan dan Pengajaran
Nosso encontro com a leitura e a ALB: memórias e sentidos
Authors: Pontes Rute Batista de
Published: October 2020

Nosso encontro com a leitura e a ALB: memórias e sentidos
Cartazes dos COLES: discursos em imagens
Authors: Silva Lilian Lopes Martin da , Oliveira Luciane Moreira de
Published: October 2020

O catálogo Tempo de Cole possui 19 cartazes dos Congressos de Leitura do Brasil, acompanhados de especificações técnicas e dos temários de cada congresso durante o período de 36 anos, de 1978 a 2014. A publicação é resultado do projeto “ALB: memórias”, cujo objetivo principal é a criação e a pesquisa do arquivo histórico da Associação de Leitura do Brasil (ALB), uma entidade criada em 1981, em estreita colaboração com a Faculdade de Educação da Universidade Estadual de Campinas (Unicamp). Neste texto apresenta-se um esforço de leitura dos cartazes dos congressos, que, em imagens e palavras, registram discursos significativos e que podem ser explorados para a construção de uma história da leitura em nosso país.
Conformable Sturm-Liouville Problem with Modified Coulomb Potential
Authors: BAŞ Erdal , NAJEMADEEN İsam
Published: October 2020

In this paper, Conformable derivative order version of the Sturm-Liouville problem having modified Coulomb potential is obtained. The studied system proves the shape of the conformable derivative general statement of the Sturm-Liouville operator with boundary conditions. Furthermore, real of eigenvalues and α-orthogonal of eigenfunctions have been proved for the problem considered. Additionally, the representation of the solution of the Sturm-Liouville problem having modified Coulomb potential is found. The results are shown comparatively by figures.
GTGS Gerçekleme Problemleri İçin Akıllı Çözümlerin Endüstriyel Bir Robot Manipülatöre Uygulanması
Authors: YUKSEL Tolga
Published: October 2020

Görüntü-tabanlı görsel servolama (GTGS) duruş kestirimi gerektirmediğinden robot manipülatörler için popüler GS yaklaşımlarından biridir. GTGS teorik sorunların yanında gerçekleme sırasındaki sorunlarla da baş etmek zorundadır. Bu gerçekleme sorunlarından temel üç tanesi sırasÜıyla etkileşim matrisinin tersinin eldesi, kontrolör için uygun bir sabit kazanç değerinin tanımlanması ve özniteliklerin görüş alanı içinde tutulmasıdır. GTGS için etkileşim matrisi her ne kadar yalancı tersi ile beraber kullanılsa da tekilliklerin oluşması durumunda kontrol yasası işleyememektedir. Diğer bir taraftan sabit kazanç değeri yakınsama hızı ile uç işlevci hızları arasında bir ödünleşmeye sebep olmaktadır. GTGS işleyişi sırasında özniteliklerin görüş alanını terk edebilmesi de yaygın bir sorundur. Bu çalışmada bu sorunları çözmek için önerilen akıllı yaklaşımların endüstriyel tipte bir robot manipülatör üzerine uygulanması hedeflenmiştir. Uygulamanın ilk aşaması olarak akıllı yaklaşımcı birimler etkileşim matrisinin tersinin yerini almakta ve tekillik sorunu ortadan kalkmaktadır. İkinci aşama olarak sabit kazanç yerine her çevrimde hata ve hata türevinin değerine göre kazanç hesabı yapan bir bulanık mantık birimi kullanılmıştır. Üçüncü aşamada ise alınan görüntü düzleminde bölgeler tanımlanmış, bir bulanık mantık birimi yardımıyla özniteliklerin görüş alanı içerisinde kalması sağlanmıştır. Çalışmada tüm gerçeklemelere dair deneysel sonuçlar sunulmuş ve tartışılmıştır.
Kaya Yünü Mineral Elyaf ve Mika Takviyeli Poliamid-6 Kompozitinin Termoset Polyester Kompozit Diske Karşı Aşınma Davranışları
Authors: ÜNAL Hüseyin , YETGİN Salih Hakan
Published: October 2020

Elektrik sektöründe kullanma amaçlı gerçekleştirilen bu çalışmada ağırlık olarak % 20 oranında kaya yünü mineral elyaf (KYME) ve mika takviyeli poliamid-6 (PA-6) termoplastik esaslı polimer kompozitler, termoset esaslı kompozit disk yüzeyine karşı aşınma ve sürtünme davranışları incelenmiştir. Çalışmanın amacı elektrik sektörü için aşınma direnci daha iyi olan polimer kompozit malzeme ile termoset doymamış polyester kompozit çiftini belirlemektir. Tribolojik deneyler disk üzerinde pim düzeneği bulunan bir aşınma cihazında gerçekleştirilmiştir. Karşı disk malzeme olarak ağırlık olarak % 40 kalsiyum karbonat ve % 25 oranında uzun cam elyaf takviyeli doymamış polyester kompozit malzemesi kullanılmıştır. Tribolojik testler, 0,5 m/s kayma hızında 0,707, 1,415, 2,123 ve 3,538 MPa basınç altında gerçekleştirilmiştir. Yapılan tribolojik çalışmalar sonucunda en düşük aşınma oranı 1.98x10-14 m2/N değeri ile %20 oranında mika takviyeli PA-6 kompozitinde elde edilmiştir. Mika takviyeli PA-6 kompoziti kaya yünü mineral elyaf takviyeli kompozite göre yaklaşık olarak % 42 oranında daha az aşındığı belirlenmiştir. Yapılan çalışma sonucunda elektriksel uygulamalarda kullanım amaçlı üretilen kompozit malzemelerden % 20 mika takviyeli PA-6 kompoziti ile %40 kalsiyum karbonat ve % 25 oranında uzun cam elyaf takviyeli doymamış polyester kompozit malzeme çifti elektrik kontak kesicilerde kullanılabilecek en uygun malzeme olarak tespit edilmiştir.
Distribución de tiempo libre e influencia al bienestar de trabajadores administrativos en una universidad pública en Chihuahua México
Authors: Viramontes Olivas Oscar Alejandro , Arroyo Ávila José René , Alvidrez Díaz María del Rosario , Guerra García Ernesto
Published: October 2020

Los vínculos sociales históricamente construidos entre trabajo y tiempo libre, son un asunto complejo y dinámico de acuerdo a las desigualdades sociales en una colectividad contemporánea. El objetivo de esta investigación, fue analizar las jornadas laborales y la eficiente administración del tiempo libre, así como sus efectos en la salud integral, conciliación trabajo-familia y los beneficios en una actividad de ocio. El presente trabajo fue de naturaleza mixta; el diseño no experimental, transeccional
descriptivo, realizándose un censo a N= 290 empleados de confianza de una universidad pública en la ciudad de Chihuahua,aplicando un instrumento de encuenta con 43 items,desarrollando el método deductivo. Se llevó un análisis cuantitativo y cualitativo descriptivo, cuyos resultados indican que las personas desean tener suficiente tiempo para conciliar trabajo-familia, ocio y salud. Solo algunos, logran tener una exitosa conciliación trabajo-familia y una actividad de ocio, generando condiciones positivas en los empleados, tanto emocional, como físicamente. Sin embargo, se presentaron limitantes como la falta de tiempo, dinero y como factor social, la equidad de género en las obligaciones familiares. El concepto de ocio, tiene una percepción aun negativa en la sociedad, por lo que la conclusión de este trabajo es, que no existe educación generalizada hacia la administración del tiempo libre y el ocio en los colaboradores de confianza en la universidad, lo que influye en el equilibrio fisiológico, la salud integral y el desarrollo humano.
Recursos naturales, reestructuración y protesta socioambiental en el Estado de Campeche
Authors: Frutos Cortes Moisés , Torres Tello Giovanna Patricia , Solano Palacios Esther
Published: October 2020

El sureste de México es una región de profundos contrastes sociales, económicos, ambientales y políticos, con una vasta riqueza natural, y por esto mismo, factor de constantes conflictos ambientales desde hace varias décadas. Por ello, uno de los aspectos críticos que abordaremos en este trabajo de manera puntual, se refiere a la lógica perversa conocida en la literatura especializada como “la paradoja de la abundancia” o “la maldición de los recursos naturales” (Acosta, 2016: 391), que trata de la marcada contradicción entre la riqueza generada por la extracción y exportación de los abundantes recursos naturales y los magros beneficios para el grueso de la población. Esa histórica riqueza natural ha sido, paradójicamente, el detonante de las grandes transformaciones sociales y económicas vinculadas a los intercambios internacionales y el proceso de globalización. Bajo ese tenor, con las políticas desarrollistas se ha acelerado en la región un proceso de desencuentro de los sectores productivos inmersos en la modernización, con una parte significativa de la sociedad enfrentada a un clima de incertidumbre y violencia, pues en el sureste mexicano se está generando una fragmentación y diferenciación social acentuada. Este trabajo pretende ser un acercamiento sobre todo descriptivo, de conflictos y protestas socioambientales en Campeche. Con base en una revisión hemerográfica de los diarios locales de mayor circulación e impacto, tales como Por Esto, Tribuna de Campeche y Expreso de Campeche. Del año 2011 hasta mediados del 2017 se registraron 39 conflictos de corte ambiental, los cuales se tipificaron de la siguiente manera: agrícola, pesquero, forestal, industrial y urbano. Esto permitirá construir un análisis socio territorial de las acciones colectivas socioambientales en el estado y sus respectivas respuestas como acciones colectivas de los actores involucrados.
Importancia, sentido de pertenencia y continuidad del sistema cultivo nopal verdura (Opuntia ficus indica L.) en Cuautlacingo, Otumba, Estado de México
Authors: Reyes Terrazas Ana Surazi , Flores Sánchez Diego , Navarro Garza Hermilio , Pérez Olvera Ma. Antonia , Almaguer Vargas Gustavo
Published: October 2020

El nopal (Opuntia ficus indica L.) es un cultivo que históricamente ha estado intrínsecamente ligado al desarrollo y cultura del territorio mexicano siendo un símbolo de identidad cultural. No obstante, su valor cultural y de identidad, han sido escasamente abordados El objetivo de este trabajo fue describir la importancia, sentido de pertenencia y pervivencia del Sistema Cultivo Nopal verdura (SCNv) en Cuautlacingo, Otumba, Estado de México. El enfoque metodológico fue mixto, integró componentes cualitativos y cuantitativos. El instrumento empleado fue un cuestionario estructurada en tres ejes: 1. Origen e importancia de la producción de nopal verdura a nivel local, 2. La producción de nopal verdura como generadora de pertenencia e identidad territorial y 3. Futuro y perspectiva de continuidad generacional del Sistema de Cultivo Nopal verdura a nivel local. En el análisis de conglomerados se identificaron dos grupos de productores que se diferencian por: a los años dedicados al cultivo, motivación en su cultivo, estrategias de continuidad, perspectivas a futuro y empleo de mano de obra. La producción de nopal verdura es una actividad trasmitida de generación en generación, motor para la economía familiar y regional cuyo impacto en la comunidad es referido como desarrollo y bienestar local. Los productores tienen un sentido de identidad y pertenencia individual y colectiva hacia la producción de nopal ligada al territorio, lo que posibilita la continuidad generacional del SCNv. Así mismo, se manifiesta la necesidad de innovaciones tecnológicas y apoyos a la producción, las cuales deben ser atendidas a través de políticas públicas que no se enfoquen solamente en incentivar la producción sino en difundir los usos y el valor de este sistema de cultivo, dada la importancia socioeconómica y cultural que representa para las comunidades de la región.
Relations between Right-Wing Authoritarianism, Social Dominance Orientation, Individualism-Collectivism and Political Identities
Authors: GÜLDÜ Özgür
Published: October 2020

This study compares university students who have nationalist, conservative, social democrat and socialist political identities in terms of right-wing authoritarianism, social dominance orientation and individualism-collectivism values. The sample was composed of 125 students with “nationalist” identity, 102 students with “conservative” identity, 144 students with “social democrat” identity and 139 students with “socialist” identity. The right-wing authoritarianism scale (RWA), social dominance orientation scale (SDO) and individualism-collectivism scale (INDCOL) were used in this study. The results showed that the students with conservative political identity received higher scores in right-wing authoritarianism personality traits than students of other political identities. In a similar way, the students with nationalist identity also had higher levels of high RWA than those with social democrat or socialist identity. The low RWA scores received by the socialist identity group were found to be higher on comparing with other identity groups. The vertical individualism and vertical collectivist levels of students with nationalist identity were higher than those of identity groups. And finally, it was also found that the right-wing authoritarianism, vertical individualism and high RWA levels of students who attended numerical or science departments were higher than the levels of students who attended verbal departments. The findings obtained are discussed within the framework of previous studies and theoretical approaches.
Eduardo Rinesi, Gabriel Nardacchione, Gabriel Vommaro (editores). Los lentes de Víctor Hugo. Transformaciones políticas y desafíos teóricos en la Argentina reciente
Authors: Ganem Dante Daniel
Published: October 2020

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Argentina, una vez más en la encrucijada
Authors: De Riz Liliana
Published: October 2020

Este artículo analiza las dimensiones de la crisis social y político-institucional que acompañó al colapso de la economía argentina a fnes de 2001, el proceso de normalización  institucional y pacifcación social, la presidencia de Néstor Kirchner y los comienzos de la presidencia de Cristina Kirchner. La autora sostiene que la fragmentación del Partido Justicialista y del espectro político no peronista, así como el mantenimiento de las redes clientelares y las rivalidades personales obstaculizan un proceso de aprendizaje innovador en la dirigencia política.
El cine en el Mercosur. El proceso de integración regional y las asimetrías de la industria cinematográfica
Authors: Moguillansky Marina
Published: October 2020

Este artículo discute las repercusiones del proceso de integración regional del Mercosur en el sector cinematográfico de los países miembro, a partir del análisis de las políticas nacionales y regionales que se han desarrollado desde su creación. Se describen las asimetrías estructurales y de políticas públicas en el sector cinematográfico entre los países miembro del Mercosur, especialmente marcadas entre los países grandes y los pequeños en todas las dimensiones consideradas. Luego, se analizan las iniciativas de políticas regionales que se han desarrollado en el Mercosur con el objetivo de paliar estas asimetrías en el sector cinematográfico: los acuerdos de co-distribución bilaterales, la creación de la Reunión Especializada de Autoridades Cinematográficas del Mercosur (RECAM) y del Foro de Competitividad para el Sector Cinematográfico.
Hacia un sistema de co-responsabilidad penal juvenil situado
Authors: Marcón Osvaldo
Published: October 2020

A partir de la vigencia de  la Convención Internacional sobre los Derechos del Niño, el modo en que el Estado debe reaccionar frente a delitos cometidos por ciudadanos menores de edad es objeto de discusión. El Garantismo se presenta, a través de la idea de la responsabilización penal, como solución universal que, así, no contempla singularidades locales y  atenta contra su pretensión garantista originaria. Dado que abre posibilidades a nuevas formas de tutela-represiva es necesario profundizar la discusión, detectando contradicciones y evitando dar por naturales algunos dominios conceptuales hegemónicos. No se trata de un problema solamente jurídico sino que está relacionado con un proyecto de Nación.
Congreso Internacional: Profundizando la democracia como forma de vida. Desafíos de la democracia participativa y los aprendizajes ciudadanos en el Siglo XXI. Rosario, Argentina, del 13 al 16 de mayo de 2010
Authors: Berdondini Mariana
Published: October 2020

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¿De qué hablamos cuando hablamos de izquierda hoy?
Authors: Quiroga Hugo
Published: October 2020

El artículo analiza el signifcado que reviste hoy el término izquierda en el mundo y, de manera particular, en América latina, luego del fracaso de los proyectos revolucionarios, del colapso de los países del Este, y de la crisis de la social-democracia. Hay un dato histórico fundamental en la realidad de los Estados latinoamericanos: la democracia electoral ha encontrado consenso en todos ellos. En este contexto, se ha señalado reiteradamente el ascenso de la izquierda en la región. El texto señala que la nueva izquierda latinoamericana, que se denomina a sí misma posneoliberal, podría ser calificada como izquierda antineoliberal, y que es el resultado, entre otras cosas, del fracaso del neoliberalismo aplicado en la región y de la crisis de los partidos.
Venezuela: once años de gestión de Hugo Chávez Frías y sus fuerzas bolivarianas (1999-2010)
Authors: López Maya Margarita
Published: October 2020

En diciembre de 1998, con el triunfo electoral de Hugo Chávez Frías y su alianza, el Polo Patriótico, comenzó en Venezuela un proceso de cambios que dura hasta hoy y se inició también en América latina, lo que algunos denominan el giro a la izquierda de la región. Chávez se impuso durante la campaña presidencial mediante un fuerte discurso polarizador y anti-neoliberal, que prometió desplazar defnitivamente a las elites políticas, que dominaban el Estado desde hacía décadas, acabar con la corrupción administrativa y encontrar a través de una democracia participativa, un nuevo modelo económico y político para el país. En este artículo pasamos revista a las gestiones gubernamentales de Hugo Chávez hasta hoy distinguiendo dos períodos de características diferenciadas: su primer gobierno orientado por la democracia participativa y protagónica; y el segundo período actualmente en curso, orientado por un proyecto denominado Socialismo del siglo XXI.
Estado, mercado y sociedad en el discurso de los thinks tanks económicos durante la década neoliberal
Authors: Cabrera María Claudia
Published: October 2020

En este artículo se afirma que durante la décadade 1990 los economistas cumplieron el papelde intelectuales orgánicos de la hegemoníaneoliberal consolidada entonces y cuya crisis yclausura se expresó trágicamente en los acontecimientosde diciembre de 2001.Ellos pensaron un modelo de país basado enlos principios que señalaba la ideología económica sostenida por el neoliberalismo, que proponíauna visión del mundo que al mismo tiempoque desarraigaba la economía de la sociedad,subsumía lo social y lo político en el mercado–entendido a su vez como autorregulado–, porlo tanto, sus principios se hacían extensivos aaquellos dos ámbitos, produciendo a su vez activamenteesta ruptura y esa incorporación.La hipótesis que se presenta propone que,como parte de este proceso, lo social tambiénfue construido en términos económicos y comocuestión económica; por ende, durante el períodode hegemonía del pensamiento neoliberal losconceptos con los que se elaboraron los diagnósticosy las políticas remitían sus contenidosy fundamentos a la economía. Dada la hipótesisprecedente, este artículo se propone reconstruiry analizar el modo cómo los economistas significaronla sociedad en general y lo social enparticular.
Alfredo Bruno Bologna y otros. La política exterior de Cristina Fernández. Apreciaciones promediando su mandato
Authors: Simonoff Alejandro
Published: October 2020

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Olga Echeverría. Las voces del miedo. Los intelectuales autoritarios argentinos en las primeras décadas del siglo XX
Authors: Vicente Martín Alejandro
Published: October 2020

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El arte de nombrar: Guillermo O’Donnell y el desarrollo de la ciencia política en América latina
Authors: Bulcourf Pablo
Published: October 2020

Este artículo analiza los aportes del destacado politólogo argentino Guillermo O’Donnell a partir de su biografía intelectual, haciendo hincapié en su capacidad para crear conceptos que den cuenta de la particularidad histórica de los procesos socio-políticos en América latina. Como así también el papel que ha ocupado este intelectual en la construcción de las principales instituciones y redes dentro de la ciencia política tanto a nivel nacional como así también regional y mundial.
Un politólogo absoluto
Authors: D’Alessandro Martín
Published: October 2020

Si pudiera condensarse la obra de O’Donnell en una línea, la más adecuada sería “democratizar el Estado, institucionalizar la democracia, y profundizar la ciudadanía”. Estos tres temas, que son también tres aspiraciones normativas, fueron los que incentivaron toda su carrera como politólogo, como intelectual, como docente, y como ciudadano comprometido con América latina. En efecto, todas sus preocupaciones giraron ‒y marcaron el camino de varias generaciones de politólogos de la región y más allá‒ sobre estos temas desde sus primeras publicaciones. Este texto dará cuenta de parte de ese recorrido
El derecho a un buen estado
Authors: Peruzzotti Enrique
Published: October 2020

Este artículo recupera la refexión de O’ Donnell sobre las formas modernas del autoritarismo militar, los procesos de democratización, los desafíos que presentan los procesos de institucionalización democrática en América latina. El autor, en Democracia, agencia y estado se embarca en un proyecto de teoría política orientado a elaborar una teoría democrática “con intención comparativa” que permita abrir líneas de discusión teórica e investigación empírica sobre la experiencia de la democratización en países que no pertenecen a lo que  él denomina `el cuadrante Noroccidental del mundo´. La fuente de inspiración de dicha teoría, aclara el autor, es la preocupación por las falencias que presentan varias de las democracias latinoamericanas contemporáneas.
Integración regional y actores subnacionales. El caso del Mercosur
Authors: Botto Mercedes
Published: October 2020

La decisión de los gobiernos nacionales de integrarse y derribar fronteras genera cambios en los gobiernos subnacionales y constituye una ventana de oportunidad para que ellos aumenten su autonomía en la gestión internacional vis a vis los Estados centrales. Sin embargo, como lo demuestra este  artículo, la posibilidad de convertir este desafío en una oportunidad o en un problema dependerá de la modalidad y alcance de los procesos de integración, por una parte; y de la ubicación geográfica y el perfil productivo de cada provincia, por el otro. Con respecto al primero, el artículo identifca dos tipos de los incentivos: los directos y formales, como ser los canales de participación y los recursos que proveen los gobiernos del bloque a los actores subnacionales; y los incentivos  indirectos e informales, que por oposición a los primeros, derivan de la acción de los mercados y no de los Estados. El Mercosur es un caso híbrido a este respecto: si bien estamos frente a un proceso de apertura creciente de espacios y recursos a nivel nacional, la lógica que impera su dinámica y distribución sigue estando en manos de las burocracias nacionales y desincentiva la acción colectiva de carácter horizontal y transnacional, la que en definitiva sigue siendo motorizada por los mercados y reducida a aquellas provincias con mayores ventajas comparadas.
María Elena Lorenzini. Política Exterior, Alianza Estratégica y energía en América Latina. Las relaciones argentino-chilenas bajo la lupa
Authors: Simonoff Alejandro
Published: October 2020

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Adriana Chiroleu, Mónica Marquina y Eduardo Rinesi (compiladores). La política universitaria de los gobiernos Kirchner: continuidades, rupturas, complejidades
Authors: Atairo Daniela
Published: October 2020

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