bluuebunny/crossref_metadata_2025 huggingface dataset:
Effects of Freeze–Thaw Cycles on Strength and Wave Velocity of Lime-Stabilized Basalt Fiber-Reinforced Loess
Authors: Wang Wensong , Cao Guansen , Li Ye , Zhou Yuxi , Lu Ting , Zheng Binbin , Geng Weile
Published: April 2022

Basalt fiber is a new environmentally-friendly material with excellent potential for soil reinforcement in geotechnical engineering construction. This study explores the effects of freeze–thaw cycles on the unconfined compressive strength (UCS) and P-wave velocity (Vp) of lime-stabilized basalt fiber-reinforced loess. Reinforced loess samples with different proportions of basalt fiber and lime were subjected to 0, 1, 5, and 10 freeze–thaw cycles, and their UCS and Vp were subsequently measured. The test results showed that the addition of basalt fiber and lime to loess could enhance strength and improve resistance against freeze–thaw damage, and the freeze–thaw damage of reinforced loess decreases with the increase of basalt fiber content and length. A relationship between UCS and Vp of the reinforced samples was obtained for the same number of freeze–thaw cycles, and this relationship exhibited linear characteristics. The fitting results indicate that the Vp can be used to estimate the UCS after freeze–thaw damage. The research results not only have important practical significance in the application of basalt fiber in geotechnical engineering but also provide a reference for the non-destructive testing of the strength of loess after freeze–thaw cycles.
Optimal Processing Parameters of Transmission Parts of a Flapping-Wing Micro-Aerial Vehicle Using Precision Injection Molding
Authors: Huang Huei-Yu , Fan Fang-Yu , Lin Wei-Chun , Huang Chiung-Fang , Shen Yung-Kang , Lin Yi , Ruslin Muhammad
Published: April 2022

In this study, we designed and fabricated transmission parts for a flapping-wing micro-aerial vehicle (FW-MAV), which was fabricated by precision injection molding, and analyzed its warpage phenomena. First, a numerical simulation (Moldflow) was used to analyze the runner balance and temperature, pressure, and stress distributions of the base, gears, and linkage of the transmission structures in an FW-MAV. These data were then applied to fabricate a steel mold for an FW-MAV. Various process parameters (i.e., injection temperature, mold temperature, injection pressure, and packing time) for manufacturing transmission parts for the FW-MAV by precision injection molding were compared. The Taguchi method was employed to determine causes of warpage in the transmission parts. The experimental results revealed that the causes of warpage in the transmission parts were, in order of importance, the mold temperature, injection pressure, packing time, and injection temperature. After the transmission parts were assembled on the FW-MAV, experiments revealed that the MAV could achieve a flight time of 180 s. Mass production of the FW-MAV by precision injection molding could potentially produce substantial savings in time, manpower, and cost.
Fire Retardancy of Cementitious Panels with Larch and Spruce Bark as Bio-Admixtures
Authors: Pacher Thomas , Barbu Marius , Urstöger Johannes , Petutschnigg Alexander , Tudor Eugenia
Published: April 2022

The aim of this study is to investigate the production of fire-resistant panels made out of bark from spruce (Picea abies), larch (Larix decidua Mill.) and cement. This research included test panels produced from bark, cement, water and cement-bonded recycling material aiming for the target density of 750 kg/m3. The physical (density, dimension stability, thickness swelling) and mechanical properties such as tensile strength and compressive strength together with fire resistance were tested. Considering the results, appealing values have been achieved: max. compressive strength: 3.42 N/mm2; max. thickness swelling: 5.48%; and density: 515 to 791 kg/m3. In principle, the properties of the produced panels depend not only on the density, but also on the hydration and, above all, on the compaction and the composition of the boards. The fire tests demonstrated that the produced panels have an enormous potential in terms of fire resistance and could be utilized for fire-retardant applications.
Landslide Susceptibility Mapping along a Rapidly Uplifting River Valley of the Upper Jinsha River, Southeastern Tibetan Plateau, China
Authors: Sun Xiaohui , Chen Jianping , Li Yanrong , Rene Ngambua N.
Published: April 2022

As a result of the influence of plate movement, the upper reaches of Jinsha River have strong geological tectonic activities, large topographic fluctuations, and complex climate characteristics, which result in the frequent occurrence of landslide disasters. Hence, there is the need to carry out landslide susceptibility mapping in the upper reaches of Jinsha River to ensure the safety of local people’s property and the safe exploitation of hydraulic resources. In this study, InSAR technology and a field geological survey were used to map the landslides. Then, the curvature watershed method was used to divide the slope units. A conditioning factor system was established, which can reflect the characteristics of the rapid uplift and vertical distribution of rainfall in the special geological environment of the study area. Finally, logistic regression, random forest, and artificial neural network models were used to establish the landslide susceptibility model. The results show that the random forest model is optimal for the landslide susceptibility mapping in this area. Additionally, the area percentages of the very low, low, moderate, high, and very high susceptibility classes were 40.13%, 20.06%, 13.39%, 12.55%, and 13.87%, respectively. Based on the analysis of the landslide susceptibility map, we suggest that the landslide geological hazards resulting from the rapid uplift of the Tibetan Plateau and the significant decrease in sea level during a glacial period in the upper reaches of Jinsha River are controlled by the double disaster effect of the geodynamic system. Consequently, this study can guide local prevention and mitigation.
Modified Polyethersulfone Ultrafiltration Membrane for Enhanced Antifouling Capacity and Dye Catalytic Degradation Efficiency
Authors: Wang Mingming , Sun Feiyun , Zeng Haojie , Su Xiaoli , Zhou Guofei , Liu Hao , Xing Dingyu
Published: April 2022

Catalytic membranes, as a combination of heterogeneous advanced oxidation and membrane technology reaction systems, have important application prospects in the treatment of dyes and other organics. In practical applications, it is still challenging to construct catalytic membranes with excellent removal efficiency and fouling mitigation. Herein, molybdenum disulfide-iron oxyhydroxide (MoS2-FeOOH) was fabricated using iron oxide and MoS2 nanoflakes, which were synthesized by the hydrothermal method. Furthermore, by changing the concentration of MoS2-FeOOH, the MoS2-FeOOH/polyethersulfone (PES) composite ultrafiltration membrane was obtained with improved hydrophilicity, permeability, and antifouling capacity. The pure water flux of the composite membrane reached 385.3 L/(m2·h), which was 1.7 times that of the blank PES membrane. Compared with the blank membrane, with the increase of MoS2-FeOOH content, the MoS2-FeOOH/PES composite membranes had better adsorption capacity and catalytic performance, and the membrane with 3.0% MoS2-FeOOH content (M4) could be achieved at a 60.2% methylene blue (MB) degradation rate. In addition, the membrane flux recovery ratio (FRR) of the composite membrane also increased from 25.6% of blank PES membrane (M0) to more than 70% after two cycles of bovine serum albumin (BSA) filtration and hydraulic cleaning. The membrane with 2.25% MoS2-FeOOH content (M3) had the best antifouling performance, with the largest FRR and the smallest irreversible ratio (Rir). Catalytic self-cleaning of the composite membrane M3 recovered 95% of the initial flux with 0.1 mol/L H2O2 cleaning. The MoS2-FeOOH/PES composite membranes with the functions of excellent rejection and antifouling capacity have a good prospect in the treatment of printing and dyeing wastewater composed of soluble dyes.
Hybrid Ecological Footprint of Taipei
Authors: Lee Yung-Jaan
Published: April 2022

The Ecological Footprint (EF) has been effectively used at the global, national and regional levels, but the local EF accounting methods are lacking. The hybrid EF has been developed to calculate the local EF. It combines a “top-down” approach to determining national EF (five components other than Carbon Footprint, CF) with a “bottom-up” approach to determining local CF (food, housing, transportation). The use of the hybrid EF is cost-effective. The hybrid EF reflects the local context and can be used to measure the progress of local sustainable development and as a basis for environmental responsibility. This study uses statistical databases for Taiwan and Taipei to calculate the hybrid EF of Taipei in 2018. The hybrid EF of Taipei was 4.797 global hectares (gha) in that year, of which the top-down national EF was 0.613 gha and the bottom-up local CF was 4.184 gha. The hybrid EF is lower than Taiwan’s EF (6.460 gha), but the local CF is higher than Taiwan’s CF (3.890 gha), reflecting the urban nature and characteristics of Taipei, which has a high density, high income and high consumption expenditure. With respect to the local CF of Taipei, food is associated with the largest component of CF (2.806 gha), and transportation is associated with the second largest component thereof (1.133 gha). Housing is associated with the smallest component (0.245 gha). Based on these results, five refinements of hybrid EF accounting and two application dimensions are proposed. First, whether the hybrid EF captures the lifestyle of the real situation in Taipei warrants further investigation. Second, the components of national EF that are associated with food should be used to accommodate regional differences by applying a scaling factor. Third, Taiwan’s CF in 2018 accounted for 60.2% of its national EF, but Taipei’s CF accounted for 87.2% of its hybrid EF. Fourth, Taipei’s CF associated with housing is low (0.245 gha/person), while the values for eastern European cities are high (3.140 gha/person). Fifth, Taipei citizens have a fairly high CF associated with private vehicles, warranting a follow-up review of urban sustainable transportation policies.
Examining COVID-19-Related Changes toward More Climate-Friendly Food Consumption in Germany
Authors: Schmidt Karolin , Wallis Hannah , Sieverding Theresa , Matthies Ellen
Published: April 2022

The present study examined the overall potential that the COVID-19 pandemic and its restrictions have for the promotion of climate-friendly food consumption in Germany. We looked at COVID-19-related changes in people’s climate-friendly food-consumption behaviors by comparing retrospectively self-reported performances between the time period in which the COVID-19 restrictions were in place and the pre-COVID-19 period. Furthermore, we examined the durability of such COVID-19-related changes with regard to an imagined post-COVID-19 period and the role of people’s personal climate-protection norms in COVID-19-related behavioral changes. To do so, we conducted two online surveys in June/July 2020 with German consumers: (a) an online study in a sample that was representative of the German population (NCOR1 = 3092) and (b) another online study in a smaller sample of German consumers (NCOR2 = 300). Altogether, the data from both surveys indicated several COVID-19-related changes toward more climate-friendly food consumption, not only during the COVID-19 pandemic and its restrictions, but also with regard to long-term changes in a potential post-COVID-19 period. Furthermore, our results also provide initial empirical evidence that people’s personal climate-protection norms are relevant moderating factors of these short- and long-term COVID-19-related behavioral changes.
Climate Change Impacts and Extinction Risk Assessment of Nepeta Representatives (Lamiaceae) in Greece
Authors: Kougioumoutzis Konstantinos , Papanikolaou Alexandros , Kokkoris Ioannis P. , Strid Arne , Dimopoulos Panayotis , Panitsa Maria
Published: April 2022

The ongoing climate change has already left its imprint on species distributions, with rare, endemic species being more threatened. These changes are more prominent in regional biodiversity hotspots, such as Greece, which is already facing the short term impacts of human induced climate change. Greek flora hosts numerous endemic medicinal and aromatic plant taxa (MAPs), which are economically important and provide integral ecosystem services. The genus Nepeta is one of the largest Lamiaceae genera, containing several MAPs, yet, despite its taxonomical and economical significance, it remains vastly understudied in Greece. We explore the effects of climate change on the range of the Greek endemic Nepeta MAPs, via a species distribution models (SDMs) approach in an ensemble modeling framework, using soil, topographical and bioclimatic variables as predictors in three different time steps. By doing so, we attempt to estimate the current and future extinction risk of these taxa and to locate their current and future species richness hotspots in Greece. The taxa analyzed are expected to experience severe range retractions, with minor intraspecific variation across all time steps (p > 0.05), driven mainly by soil- and aridity-related variables. The extinction risk status of only one taxon is predicted to worsen in the future, while all other taxa will remain threatened. Current species richness hotspots are mainly located in southern Greece and are projected to shift both altitudinally and latitudinally over time (p < 0.01).
The ESG Reporting of EU Public Companies—Does the Company’s Capitalisation Matter?
Authors: Janicka Małgorzata , Sajnóg Artur
Published: April 2022

Large companies in the European Union are required to publish information related to environmental, social and governance (ESG) matters. The aim of our study is to determine the quality of ESG reporting in EU public companies (measured by the ESG-index) and its effect on their market capitalisation. Therefore, the results of our research will be both scientific and applicative, and they will be useful for investors when making investment decisions on the stock exchange. The research includes over 15,000 companies listed on 27 stock exchanges (in the “old” and “new” member states, EU-14 and EU-13, respectively), covering the period 2002 to 2019. The data were obtained from the Refinitiv database. We drew three conclusions after the research. Firstly, only 50% of the companies listed on the stock exchanges in the old EU member states and merely 5% of the companies from the new EU member states had reported ESG-indexes in any year of the research period. Secondly, we found a positive relationship between a company’s market capitalisation and the quality of its ESG reports. Thirdly, the market values of companies are positively but not strongly affected by the ESG-indexes.
Evaluation of Industrial Green Transformation in the Process of Urbanization: Regional Difference Analysis in China
Authors: Yue Jia-Pei , Zhang Fu-Qin
Published: April 2022

Population mobility and the expansion of construction land in industrial development promote urbanization, and the sustainable development of cities creates requirements for the green transformation of industry. This paper uses the directional distance function (DDF) and the global Malmquist–Luenberger (GML) index method—including urbanization factors—to calculate the industrial green transformation (IGT) index in China, and to analyze its evolution and spatial distribution characteristics. The results show that ignoring the urbanization factor will lead to the overestimation of the IGT. The growth of the index has multiple stages, and it shows a decreasing order in the middle, east and west regions. Overall, the distribution of the index spreads out over time, and the gap widens. In terms of spatial correlation, high values are mostly concentrated in the eastern region and low values are mostly concentrated in the western region, and the gap in the eastern region is larger than those in the central and western regions. Therefore, in addition to the transformation of industrial production into a circular economy model, it is also necessary to promote the circulation of technical talent between regions in the development of urbanization, reducing the unbalanced development between regions and comprehensively promoting the green transformation of industry.
Facial Asymmetry: A Narrative Review of the Most Common Neurological Causes
Authors: Chojdak-Łukasiewicz Justyna , Paradowski Bogusław
Published: April 2022

Symmetry of the face is one of the most important features for the perception of attractiveness. Asymmetry of the face means that the right and left sides of the face are not identical. Subclinical facial asymmetry is very common in the general population. Most people have some slight facial asymmetry, and this is the normal biological situation in humans. Abnormalities from soft tissue, dental, and skeletal elements lead to facial asymmetry. Asymmetry has many causal factors, and its aetiology includes both congenital and acquired conditions. Neurological facial asymmetry is scarcely addressed in the dental literature. In this narrative review, we focus on the most common neurological causes of facial asymmetry. From a neurological point of view, facial asymmetry can result from disturbances of the cranial nerves, developmental disorders, or myopathies. In the broad range of differential diagnostics of facial asymmetry, neurological abnormalities should be taken into consideration. The treatment must be related to the underlying cause. Complete knowledge of the aetiological factors and the character of the asymmetry plays a crucial role in formulating a treatment plan.
Internal Jugular Central Venous Catheter Tip Migration: Patient and Procedural Factors
Authors: Smith Tyler , Kaufman Claire , Quencer Keith
Published: April 2022

Background: The ideal central venous catheter (CVC) tip position placement is controversial, and CVCs do not remain in a fixed position after placement. This study evaluates both patient and procedural factors which may influence CVC tip migration and subsequent catheter dysfunction. Materials and Methods: This study evaluates CVC placements at a single institution. Patient age, gender, body mass index (BMI), catheter laterality, CVC type and indication for central venous access were recorded. Catheter tip location relative to the carina was measured at time of placement and removal utilizing supine fluoroscopic imaging. Patients’ electronic medical records were reviewed for evidence of catheter dysfunction. Statistical analysis was performed utilizing odds ratios and two tailed Student’s t-test. Results: 177 patients were included (101 female; mean age 55; mean BMI 29.2). Catheter types included 122 ports, 50 tunneled large bore central venous catheters (≥9 French), and 5 tunneled small bore central venous catheters (<9 French). 127 were right sided catheters, and 50 were left sided. Left sided CVCs had a mean cranial tip migration of 3.2 cm (standard deviation ±2.9 cm) compared to 0.8 cm (standard deviation ±1.9 cm) for right sided catheters (p = 0.000008). Catheters that migrated cranially by >2 cm had more than 7× greater risk of dysfunction compared to catheters that migrated ≤2 cm (odds ratio of 7.2; p = 0.0001). Left sided CVCs were significantly more likely to have >2 cm of cranial migration (odds ratio 6.9, 95% CI 3.4–14.2, p < 0.0001) and had a higher rate of dysfunction, likely due to this cranial migration (32% vs. 4.7%; p = 0.00001). Gender and BMI were not found to be associated with catheter dysfunction or an increased odds ratio of >2 cm cranial migration. Conclusions: Left-sided CVCs migrate an average of 2.4 cm cranially more than right-sided catheters. Additionally, when migration occurs, left-sided catheters are more likely to be dysfunctional. These suggest that lower initial placement may be beneficial in left-sided catheters.
Patterns of Cerebrospinal Fluid Alzheimer’s Dementia Biomarkers in People Living with HIV: Cross-Sectional Study on Associated Factors According to Viral Control, Neurological Confounders and Neurocognition
Authors: Trunfio Mattia , Atzori Cristiana , Pasquero Marta , Di Stefano Alessandro , Vai Daniela , Nigra Marco , Imperiale Daniele , Bonora Stefano , Di Perri Giovanni , Calcagno Andrea
Published: April 2022

People living with HIV (PLWH) age with an excess burden of comorbidities that may increase the incidence of age-related complications. There is controversy surrounding the hypothesis that HIV can accelerate neurodegeneration and Alzheimer’s dementia (AD). We performed a retrospective study to analyze the distribution of cerebrospinal fluid (CSF) AD biomarkers (beta amyloid 1–42 fragment, tau, and phosphorylated tau) in adult PLWH (on cART with undetectable viremia, n = 136, with detectable viremia, n = 121, and with central nervous system CNS disorders regardless of viremia, n = 72) who underwent a lumbar puncture between 2008 to 2018; HIV-negative controls with AD were included (n = 84). Five subjects (1.5%) presented CSF biomarkers that were compatible with AD: one was diagnosed with AD, whereas the others showed HIV encephalitis, multiple sclerosis, cryptococcal meningitis, and neurotoxoplasmosis. Regardless of confounders, 79.6% of study participants presented normal CSF AD biomarkers. Isolated abnormalities in CSF beta amyloid 1–42 (7.9%) and tau (10.9%) were associated with age, biomarkers of intrathecal injury, and inflammation, although no HIV-specific feature was associated with abnormal CSF patterns. CSF levels of AD biomarkers very poorly overlapped between HIV-positive clinical categories and AD controls. Despite the correlations with neurocognitive performance, the inter-relationship between amyloid and tau proteins in PLWH seem to differ from that observed in AD subjects; the main driver of the isolated increase in tau seems represented by non-specific CNS inflammation, whereas the mechanisms underlying isolated amyloid consumption remain unclear.
Multidimensional Frailty and Vaccinations in Older People: A Cross-Sectional Study
Authors: Veronese Nicola , Vassallo Giusy , Armata Maria , Cilona Laura , Casalicchio Salvatore , Masnata Roberta , Costantino Claudio , Vitale Francesco , Giammanco Giovanni Maurizio , Maggi Stefania , Sabico Shaun , Al-Daghri Nasser M. , Dominguez Ligia J. , Barbagallo Mario
Published: April 2022

It is known that influenza, herpes zoster, pneumococcal and pertussis infections may increase morbidity and mortality in older people. Vaccinations against these pathogens are effective in older adults. Frailty seems to be an important determinant of vaccination rates, yet data supporting this association are still missing. Therefore, we aimed to investigate the prevalence of four recommended vaccinations (influenza, herpes zoster, pneumococcal and diphtheria-tetanus-pertussis) and the association with multidimensional frailty assessed using a self-reported comprehensive geriatric assessment tool, i.e., the multidimensional prognostic index (SELFY-MPI). Older participants visiting the outpatient clinic of Azienda Ospedaliera Universitaria, Palermo, Italy were included. The SELFY-MPI questionnaire score was calculated based on eight different domains, while the vaccination status was determined using self-reported information. We included 319 participants from the 500 initially considered (63.8%). Vaccination against influenza was observed in 70.5% of the cases, whilst only 1.3% received the vaccination against diphtheria-tetanus-pertussis. Participants with higher SELFY-MPI scores were more likely to report vaccination against pneumococcus (45.6 vs. 28.3%, p = 0.01), whilst no significant differences were observed for the other vaccinations. In conclusion, the coverage of recommended vaccinations is low. Higher SELFY-MPI scores and vaccination status, particularly anti-pneumococcus, appear to be associated, but future studies are urgently needed for confirming that frailty is associated with vaccination status in older people.
Safety and Immunogenicity of a Booster Vaccination by CoronaVac or BNT162b2 in Previously Two-Dose Inactivated Virus Vaccinated Individuals with Negative Neutralizing Antibody
Authors: Lai Kristi Tsz-Wan , Lai Wan Loong Emilie Yuen-Ting , Fung Terry Ling-Hiu , Luk Luke Wing-Pan , Lau Chor-Chiu , Zee Jonpaul Sze-Tsing , Ma Edmond Shiu-Kwan , Tang Bone Siu-Fai
Published: April 2022

COVID-19 has swept across the globe since 2019 and repeated waves of infection have been caused by different variants of the original SARS-CoV-2 (wild type), with the Omicron and Delta variants having dominated recently. Vaccination is among the most important measures in the absence of widespread use of antivirals for prevention of morbidity and mortality. Inactivated virus vaccine has been abundantly used in many countries as the primary two-dose regimen. We aim to study the safety and immunogenicity of CoronaVac (three-dose inactivated virus vaccine) and the BNT162b2 (two-dose inactivated virus vaccine followed by an mRNA vaccine) booster. Both CoronaVac and BNT162b2 boosters are generally safe and have good immunogenicity against the wild type SARS-CoV-2 and the Delta variant with the majority having neutralizing antibodies (NAb) on day 30 and day 90. However, the BNT162b2 booster is associated with a much higher proportion of positive NAb against the Omicron variant. Only 8% of day 30 and day 90 samples post CoronaVac booster have NAb against the Omicron variant. In addition, more BNT162b2 booster recipients are having positive T-cell responses using interferon gamma release assay. In places using inactivated virus vaccine as the primary two-dose scheme, the heterologous mRNA vaccine booster is safe and more immunogenic against the Omicron variant and should be considered as a preferred option during the current outbreak.
Anti-Gr-1 Antibody Provides Short-Term Depletion of MDSC in Lymphodepleted Mice with Active-Specific Melanoma Therapy
Authors: Rose Peter , van den Engel Natasja K. , Kovács Julia R. , Hatz Rudolf A. , Boon Louis , Winter Hauke
Published: April 2022

Lymphodepletion, reconstitution and active-specific tumor cell vaccination (LRAST) enhances the induction of tumor-specific T cells in a murine melanoma model. Myeloid-derived suppressor cells (MDSC) may counteract the induction of tumor-reactive T cells and their therapeutic efficacy. Thus, the aim of the study was to evaluate a possible benefit of MDSC depletion using anti-Gr-1 antibodies (Ab) in combination with LRAST. Female C57BL/6 mice with 3 days established subcutaneous (s.c.) D5 melanoma were lymphodepleted with cyclophosphamide and reconstituted with naive splenocytes. Vaccination was performed with irradiated syngeneic mGM-CSF-secreting D5G6 melanoma cells. MDSC depletion was performed using anti-Gr-1 Ab (clone RB6-8C5). Induction of tumor-specific T cells derived from tumor vaccine draining lymph nodes (TVDLN) was evaluated by the amount of tumor-specific interferon (IFN)-γ release. LRAST combined with anti-Gr-1 mAb administration enhanced the induction of tumor-specific T cells in TVDLN capable of releasing IFN-γ in a tumor-specific manner. Additional anti-Gr-1 mAb administration in LRAST-treated mice delayed growth of D5 melanomas by two weeks. Furthermore, we elucidate the impact of anti-Gr-1-depleting antibodies on the memory T cell compartment. Our data indicate that standard of care treatment regimens against cancer can be improved by implementing agents, e.g., depleting antibodies, which target and eliminate MDSC.
Manajemen Risiko Dalam Bisnis Forex Dengan Metode House Of Risk
Authors: Fiqtyandi Alfath Ridwan , Nur Cahyo Winda
Published: April 2022

Tingginya minat dan ketertarikan masyarakat dunia terhadap dunia valuta asing atau forex (foreign exchange) meningkat cukup drastis dari tahun ke tahun. Dari data statistik yang diolah oleh BIS (Bank for International Settlement), yang mana menunjukkan data turnover foreign exchange market dari tahun 2001 yang hanya berkisar 1.239 billion  menjadi 5.067 billion di tahun 2016. Oleh karena bisnis forex ini memiliki tingkat risiko yang cukup tinggi, serta tingginya minat masyarakat dunia akan bisnis ini, maka perlu dilakukan penelitian terkait cara pengelolaan risiko dan pengambilan keputusan dalam bisnis forex tersebut.. Penelitian ini dilakukan dengan menggunakan metode house of risk dalam identifikasi sumber risiko dan tindakan mitigasinya. House of risk terdiri dari 2 fase. Fase pertama yaitu identifikasi kejadian risiko dan agen risiko. Dari hasil wawancara, diskusi, dan brainstorming yang dilakukan, diperoleh hasil bahwa dalam bisnis forex terdapat 10 kejadian risiko dan 13 agen risiko yang teridentifikasi. Kemudian dari hasil pareto diagram diperoleh 5 agen risiko terpilih berdasarkan nilai ARP tertinggi dengan perbandingan 80:20 sehingga mitigasi yang dilakukan dapat lebih fokus. Pada house of risk fase 2, dilakukan diskusi dan wawancara dan diperoleh 13 preventive action (PA) sekaligus dengan derajat kesulitan pada masing-masing PA sebagai nilai input dalam tabel house of risk fase 2. Berdasarkan hasil nilai ETD (effectiveness to difficulty) dilakukan pengurutan dari ke 13 PA tersebut, dimana mitigasi memilih broker yang teregulasi oleh regulator resmi dan diakui dunia (PA1) menempati prioritas tindakan pencegahan pertama dengan nilai ETD 4212, diikuti oleh 12 tindakan pencegahan lainnya dengan urutan ETD terbesar sampai terkecil.
Estimasi Ketidakpastian Nilai Acuan Kobalt Dan Mangan Dalam Matriks Air Minum Kemasan
Authors: Elishian Christine , Komalasari Isna , Mardika Handayani Eka , Zuas Oman , Hamim Nuryatini , Hindayani Ayu , Styarini Dyah , Pratiwi Eka
Published: April 2022

Ketidakpastian merupakan salah satu bagian penting dari nilai acuan suatu bahan acuan bersertifikat. Pada penelitian ini, komponen – komponen ketidakpastian pada penentuan nilai acuan kobalt (Co) dan Mangan (Mn) dalam bahan acuan matriks Air Minum Kemasan (AMK) telah berhasil diidentifikasi dan ditentukan dengan mengacu pada ISO/Guide 35:2017. Komponen yang berkontribusi pada nilai acuan Co dan Mn yaitu komponen ketidakpastian yang bersumber dari homogenitas sampel, ketidakpastian asal stabilitas jangka panjang penyimpanan dan ketidakpastian yang bersumber dari karakterisasi. Proses karakterisasi nilai acuan dilakukan dengan perbandingan dua metode yaitu ICP-MS dan ICP-OES menggunakan internal standar Ytrium dan kalibrasi eksternal. Nilai acuan logam Co dan Mn beserta ketidakpastiannya yaitu 14,8 ± 2,7 µg Kg-1 dan 41,6 ± 7,5 µg Kg-1 pada tingkat kepercayaan 95% dengan faktor cakupan 2. Adapun sumber kontributor terbesar ketidakpastian nilai acuan ditemukan berasal dari komponen stabilitas jangka panjang yaitu sebesar 1,17 µg Kg-1 (8%) dan 3,59 µg Kg-1 (9%) masing-masing untuk Co dan Mn.
Analisis Perubahan Tutupan Lahan Sebelum Dan Setelah Gempa Bumi Tahun 2018 Di Kecamatan Sambelia, Lombok Timur, Nusa Tenggara Barat
Authors: Arinka Fitri Vindy , Prasasti Indah
Published: April 2022

Gempa bumi telah mengguncang wilayah Lombok, Nusa Tenggara Barat pada tanggal 29 Juli 2018 dan kembali terjadi tepatnya tanggal 5 Agustus dan 19 Agustus 2018. Akibat yang timbul oleh peristiwa ini diantaranya kerusakan infrastuktur pada bangunan, luka-luka hingga memakan korban jiwa. Salah satu dampak terparah berada di Kecamatan Sambelia. Pada penelitian ini dilakukan pemetaan tutupan lahan Kecamatan Sambelia pada tahun 2017, 2018, dan 2019. Analisis dilakukan berupa perbandingan ketiga peta agar diketahui perubahan tutupan lahan. Data yang digunakan adalah citra satelit Landsat 8 dan dilakukan klasifikasi supervised dengan metode Maximum Likelihood Classification. Tutupan lahan yang diidentifikasi pada studi ini adalah badan air, lahan pertanian dan perkebunan, lahan terbangun, lahan terbuka, hutan bakau, semak belukar, dan vegetasi tinggi. Hasil perubahan yang terdeteksi pada tahun 2017 sampai 2018 menunjukkan lahan vegetasi tinggi mengalami penurunan luas lahan yang masif. Selain lahan vegetasi tinggi, penurunan luas lahan juga terjadi pada lahan terbangun, hutan bakau, badan air, dan semak belukar sedangkan lahan terbuka sebaliknya. Pada tahun berikutnya, luas badan air dan lahan terbangun berbalik meningkat yang diikuti oleh lahan pertanian dan perkebunan. Berbeda dengan luas vegetasi tinggi, semak belukar, dan hutan bakau yang menurun secara konstan tiap tahunnya. Secara garis besar, uji akurasi terhadap peta tutupan lahan tahun 2017, 2018, dan 2019 menghasilkan overall accuracy masing-masing 97,14%, 92,50%, dan 91,42% serta Kappa Coefficient yakni 96,66%, 91,42%, dan 90%. Perubahan tutupan lahan terutama pada bangunan dan lahan terbuka diperkirakan sebagai akibat dari gempa bumi.
Stabilisasi Sistem Kontrol Bilinier Dengan Gangguan Menggunakan Linierisasi Eksak Dan Backstepping
Authors: Mu’tamar Khozin , Naiborhu Janson , Saragih Roberd
Published: April 2022

Sistem kontrol bilinear banyak digunakan dalam teknik dan kimia untuk memodelkan dinamika karena memiliki pendekatan dan kinerja yang lebih baik daripada sistem kontrol linier. Namun asumsi dan keterbatasan dalam pemodelan akan menghasilkan faktor ketidakpastian, yaitu berupa parameter taktentu dan fungsi gangguan. Pada artikel ini dibahas tentang desain kontrol pada sistem kontrol bilinier berorde dua dengan adanya fungsi gangguan. Diasumsikan sistem memiliki derajat relatif dua dan fungsi gangguan hanya berpengaruh pada dinamik variabel keadaan yang dikontrol. Sistem kontrol bilinier diasumsikan memiliki derajat relatif dua sehingga dapat ditransformasi secara eksak menjadi bentuk normal menggunakan transformasi umpan balik. Desain kontrol dilakukan berdasarkan sistem linier menggunakan metode backstepping. Hasil simulasi menunjukkan bahwa fungsi kontrol yang diperoleh dapat membawa luaran sistem dari titik awal menuju titik asal dalam waktu yang relatif singkat.
Refinement in Cultivar of Indian Mustard for Higher Yield Under Thermal Climatic Condition of Uttar Pradesh
Authors: Singh R.A. , Singh I.P. , Chaudhary V.R. , Singh R.K. , Pal S.B.
Published: April 2022

The refinement and assessment based field experiment was laid out during Rabi season of 2002 and 2003 on farmers fields at Mainpuri district under National Agricultural Technology Project, Zonal Agricultural Research Station, Mainpuri. The main objective was to find out suitable variety of Indian mustard for sowing in early period under thermal condition and replace the local Indian mustard cultivar ‘chhapka’. The nutrient status of pilot area was low. Five high yielding varieties i.e. Rohani, Varuna, Kanti, Urvarshi, Pusa Jai Kisan were tested with local cultivar Chhapka. The tested varieties of Indian mustard did not much differ in growth parameters but cv. Urvarshi displayed the superiority over all varieties. The lowest seed weight/plant (15.85 /plant) and test weight (4.30 gram) were weighed in local cultivar Chhapka, while highest seed weight/plant (18.00 g/plant) and test weight (4.95 gram) were recorded in cv. Urvarshi. The highest seed yield of 30.80 q/ha was noted under tested cultivar Urvarshi and lowest noted under Chaapka(15.70 q/ha). The other tested varieties yielded seed between these two limits. The highest net return of Rs. 99667/ha and BCR (1:3.56) were computed under Urvarshi cultivar. The lowest net return of Rs. 31717/ha and BCR (1:1.81) were computed under local cultivar Chhapka. The cultivar Urvarshi also increased net income of famers by 3.15 fold, which was higher over other tested varieties.
THE INTERPLAY BETWEEN PSYCHOLOGICAL CONTRACTUAL BREACH, SUPERVISOR TRUST, AND ORGANIZATIONAL INJUSTICE IN CONSTRUCTION INDUSTRY
Authors: Marwat Athar , Abil Adnan , Ali Amina
Published: April 2022

This study evidences the psychological contract breach and organizational injustice affect via negative influence of employees’ supervisor trust. Questionnaire survey was sent to the individual at the construction site for data collection. The sample comprises 194 full-time employees. After initial data normality & reliability testing, we conducted confirmatory factor analysis to assess validity of measures with AMOS. The results of our empirical study show that when faced with psychological contracts breaches, and injustice in the workplace, employees are less likely to trust supervisor and most likely to engage in neglecting behaviors. In view of these results, it was suggested that construction supervisors plan policies and strategies to facilitate implementation of an appropriate environment. It will also provide positive culture; where-ever employees more frequently execute behavior in the low breach of psychological contract with the justice environment.
FACTORS AFFECTING WOMEN'SCAREER CHOICE AND SELF-EFFICACY: EVIDENCE FROM KHYBER PAKHTUNKHWA, PAKISTAN
Authors: Ullah Farman , Yahya Salman
Published: April 2022

The research is based on the women's career choices in Khyber Pakhtunkhwa.The main focus of the research is to judge the perception that women of Peshawar hold about different occupations, her choice of choosing her career, and to which extent she is influential in choosing her career. The study is carried out in Khyber Pakhtunkhwa, especially Peshawar. Data is primary, and descriptive statistics are being used on the questionnaire.Two portion questionnaires are developed for the study. The study suggests that fathers influence female career choices. Most of the females in the telecom sector and Khyber Pakhtunkhwa prefer job security in the job sector.
Teorías de la educación y las tic como fundamento para la elaboración de una metodología basada en la realidad aumentada
Authors: Alejo Muñoz James , Rodríguez de Pinilla María Teresa , Cruz León Artemio
Published: April 2022

El proceso educativo se fortalece con el uso de las Tecnologías de la Información y Comunicación (TIC). Frente a las muchas opciones que ofrecen las TIC es importante probar aquellas que son emergentes. Este trabajo tiene por objetivo analizar las TIC dentro de algunos paradigmas de la educación y su uso en el salón de clase como sustento para la incorporación de la Realidad Aumentada (RA) dentro de la asignatura de la Filosofía y Ética en la Preparatoria Agrícola de la Universidad Autónoma Chapingo (PAUACH), institución caracterizada por su especialización agronómica. Se hizo una revisión bibliográfica enfocada en las Teorías de la Educación y algunos estudios experimentales, donde se aprecia que el profesor cumple un papel primordial para introducir la Realidad Aumentada en su labor docente. Se concluye que es posible la coexistencia de las TIC en las diferentes Teorías de la Educación, la importancia de conocer las características bajo las cuales se pretende hacer uso de éstas y la viabilidad de aplicarlas en clase.
Educação em tempos de pandemia, implicações do ensino on-line
Authors: Bernartt Roseane Mendes
Published: April 2022

Este artigo discute as mudanças ocorridas na educação brasileira durante a pandemia do COVID 19. O ensino via tecnologias digitais foi o recurso mais utilizado pelas escolas no Brasil durante o período de isolamento social, levando milhares de crianças e adolescentes do Ensino Fundamental a experimentaram uma nova modalidade de ensino. As desigualdades que historicamente dividem a educação pública da privada ficaram explícitas nesse momento em que o acesso às tecnologias é fundamental. A condição social do aluno mostrou-se determinante para sua aprendizagem. A tendência de propagação do ensino a distância no Brasil envolve vários interesses atrelados às vantagens econômicas e ideológicas que tal modo de ensino proporciona.
Educação no Brasil em tempos de pandemia
Authors: Filipak Sirley Terezinha , Guebert Mirian Célia Castellain , Borges Valdir
Published: April 2022

Educação no Brasil em tempos de pandemia é uma reflexão acerca da função da educação no referido contexto histórico-social. Abrange relações derivadas do trabalho docente e da gestão escolar, movidas pelas mudanças sociais, econômicas, políticas, educacionais e, tecnológicas. Objetivamos refletir sobre o contexto educacional brasileiro, no que tange ao trabalho docente e aos processos de gestão no intento de ressignificar a função da educação, enquanto construtora da autonomia e cidadania dos educandos, no contexto das ações educativas em tempos de pandemia, em que somos urgidos a agir e a decidir na incerteza. É uma pesquisa documental, fundamentada nos estudos de Adorno (1995), Bittar (2007), Dias e Porto (2010), Muller (2017), Perrenoud (200), ancorada na Lei de Diretrizes e Bases da Educação Nacional, nº 9.394/96 e nas recomendações da UNESCO (2020), incluindo a Força-tarefa internacional para ajuda aos professores. As reflexões e conceitos se pautam na ressignificação da educação como direito de todos. Percebe-se as fragilidades na organização temporal, estrutural em relação ao que se recomenda e ao que se constrói entre os sujeitos e a não efetiva função social da escola, bem como a integração de toda a sociedade brasileira, nestes tempos de pandemia.

Palavras-chave:  Educação. Professores. Estudantes. Pandemia.
A práxis coletiva em Makarenko
Authors: Nobre Iziane Silvestre
Published: April 2022

Este artigo é resultado preliminar de uma pesquisa de doutorado em Educação, cujo objetivo é investigar a práxis dentro do processo revolucionário soviético. Dentro das contribuições da pesquisa, destaca-se o papel de Makarenko – educador ucraniano cuja experiência teórico-prática estava alicerçada na construção de uma pedagogia calcada no princípio da solidariedade e da cooperação existentes entre as pessoas. A pedagogia makareniana era reflexo de uma sociedade cuja práxis político-educativa estava voltada para a gestão coletiva da vida social. Com uma revisão de literatura sobre a práxis coletiva de Makarenko, extraiu-se uma metodologia que procurava aliar teoria e prática, mediante o trabalho e uma práxis coletiva, cuja finalidade era contribuir na formação de uma nova personalidade dentro das contradições de uma sociedade em transição.
Formação de Professores: projetos escolares como possibilidade de transversalizar a educação ambiental na educação básica
Authors: Seidel Vorpagel Fernanda , Da Silva Cousin Cláudia , Ariza Ariza Leidy Gabriela
Published: April 2022

Este artigo refere-se a um estudo embasado pela pesquisa qualitativa, com abordagem fenomenológica e hermenêutica, tendo como questão de pesquisa: o que é isso que se mostra de Educação Ambiental Crítica e Transformadora nas narrativas acerca do contexto escolar brasileiro e colombiano? O objetivo da pesquisa intentou compreender como a Educação Ambiental Crítica e Transformadora se mostra nas escolas da Educação Básica, em diferentes lugares socioespaciais no Brasil e na Colômbia. Para a produção dos dados foram utilizadas entrevistas narrativas, sendo analisadas pela abordagem da Análise Textual Discursiva (MORAES; GALIAZZI, 2016). Desse modo, a partir de uma categoria emergente, apresentamos o metatexto intitulado: A formação inicial e continuada de professores: os projetos escolares como possibilidade de transversalizar a Educação Ambiental. A relevância social desta pesquisa consiste em potencializar e instrumentalizar a práxis de Educação Ambiental Crítica e Transformadora, a partir de projetos escolares no cotidiano escolar, por meio da formação de professores, tanto no Brasil como na Colômbia.
Analisis Tingkat Kepuasan Mahasiswa XYZ Terhadap Program PERMATA-SAKTI Tahun 2020 dengan Metode HEdPERF dan HiEDQUAL
Authors: Febriani Nabilah Dwi , Fathoni Muhammad Zainuddin , Ismiyah Elly
Published: April 2022

Kepuasan mahasiswa merupakan salah satu hal yang sangat penting dalam peningkatan kualitas layanan dalam perguruan tinggi. Kepuasan mahasiswa terbentuk apabila seluruh kebutuhan mahasiswa selama menempuh perkuliahan dapat dipenuhi dengan baik oleh perguruan tinggi. Merdeka Belajar – Kampus Merdeka (MBKM) merupakan kebijakan yang dikeluarkan oleh Kemendikbud dalam rangka mendorong mahasiswa untuk menguasai berbagai bidang keilmuan. Merdeka Belajar – Kampus Merdeka (MBKM) memiliki berbagai macam program salah satunya yaitu pertukaran pelajar. PERMATA-SAKTI merupakan salah satu bentuk implementasi dari pertukaran pelajar. Pada tahun-tahun sebelumnya, PERMATA-SAKTI dilakukan secara offline dengan mendatangi kampus pertukaran. Namun, pada 2020 program PERMATA-SAKTI dilakukan secara online akibat pandemi COVID-19 yang melanda seluruh Indonesia. Dalam implementasinya, tentu tidak semulus tahun-tahun sebelumnya karena adanya peralihan dari offline ke online sehingga membutuhkan penyesuaian. Adanya penyesuaikan tersebut paling tidak dapat mempengaruhi kepuasan mahasiswa terhadap program PERMATA-SAKTI. Penelitian ini bertujuan untuk mengukur tingkat kepuasan mahasiswa XYZ terhadap Program PERMATA-SAKTI tahun 2020. Selain itu, penelitian ini juga bertujuan untuk mengetahui atribut-atribut yang mempengaruhi kepuasan mahasiswa serta memberikan usulan terkait kualitas pelayanan pada Program PERMATA-SAKTI yang ada di Universitas XYZ. Metode yang digunakan adalah HEdPERF dan HiEDQUAL. Metode HEdPERF dan HiEDQUAL memiliki dasar konsep yang sama dengan metode SERVQUAL yaitu mengukur kepuasan berdasarkan nilai gap antara persepsi dan harapan. Hasil yang didapat adalah terdapat 20 atribut yang memiliki nilai gap negatif atau sebesar 68,9% dari keseluruhan atribut dimana berasal dari atribut yang terkait dengan PT Pengirim sebesar 37,9% dan PT Penerima sebesar 31,03% sedangkan untuk atribut yang terkait dengan belmawa seluruhnya memiliki nilai gap yang positif. Nilai gap terbesar adalah terletak pada atribut ke 28 sebesar -0,39 yaitu “ketersediaan layanan kesehatan bagi mahasiswa PERMATA-SAKTI dari PT Pengirim”. Usulan yang diberikan adalah memberikan treatment khusus kepada mahasiswa PERMATA-SAKTI berupa konsultasi kesehatan secara berkala sehingga kesehatan fisik dapat tetap terjaga selama mengikuti kuliah pertukaran. Secara keseluruhan, kepuasan mahasiswa XYZ terhadap Program PERMATA-SAKTI tahun 2020 masih belum begitu tinggi sehingga perlu dilakukan perbaikan-perbaikan utamanya untuk atribut yang memiliki nilai gap negatif terbesar.Kata kunci— Kepuasan Mahasiswa; Program PERMATA-SAKTI; HEdPERF dan HiEDQUAL