bluuebunny/crossref_metadata_2025 huggingface dataset:
A review of exploratory studies at RSC Energia into high-temperature voltage conversion systems for an electrically-propelled transportation spacecraft
Authors: SINYAVSKIY Viktor V. , TROITSKIY Stanislav R.
Published: May 2021

The paper presents studies conducted at RSC Energia that looked into the feasibility of developing a high-temperature high-power voltage converter of a low-voltage space power supply system for an electrically-propelled space transportation spacecraft based on classical voltage conversion systems using electroplasma gates (key elements) and high-temperature transformers. It provides electrical schematics fro voltage conversion systems. It presents results of experimental studies on lab prototypes of electroplasma gates with electrical power of tens and hundreds kilowatts, which have demonstrated that in principle it is possible to use them as a basis for development of high-temperature radiation-proof voltage converters with mass fraction of ~0.01 kg/A for such power sources as nuclear power-supply systems with sub-megawatt and megawatt thermionic converter reactor. It provides a rationale for selecting the voltage conversion frequency in systems without forced cooling. It provides an experimental proof that in principle it is possible to implement high-temperature transformers with 600°С operating temperature level, and gives recommendations on selection of materials.
Key words: Space power system, electrically-propelled transportation spacecraft, voltage converter, electroplasma gate, high-temperature transformer, conversion frequency.
ANALISIS FAKTOR-FAKTOR YANG MEMPENGARUHI STUNTING PADA BALITA DI KOTA GORONTALO MENGGUNAKAN REGRESI BINOMIAL NEGATIF
Authors: ZUBEDI FAHREZAL , ALIU MUFTIH ALWI , RAHIM YOLANDA , OROH FRANKY ALFRITS
Published: May 2021

This study aims to model stunting cases in children under five in Gorontalo city in 2018. In this model, it can be seen that the significant factors that affect stunting cases in children under five in Gorontalo city in 2018.  This study uses data on stunting cases in 9 (nine) districts in the city of Gorontalo and the factors that influence it. The research data were obtained from the Public Health in Gorontalo city. This study used one response variable, namely the number of cases of stunting and four predictor variables, namely number of toddlers who received exclusive breastfeeding, the percentage of low birth weight (LBW), the percentage toddlers who received complete basic immunization, and number of proper sanitation. The results obtained were the variables of number of toddlers who received exclusive breastfeeding and the percentage toddlers who received complete basic immunization which had a significant effect on stunting cases in children under five in the city of Gorontalo in 2018. This was indicated by the P-value of the variable for number of toddlers who received exclusive breastfeeding of 0.00283 and P-value of variable the percentage toddlers who get complete basic immunization is 0.06564.
MODEL HYBRID NONLINEAR REGRESSION LOGISTIC (NLR) –DOUBLE EXPONENSIAL SMOOTHING (DES) DAN PENERAPANNYA PADA JUMLAH KASUS KUMULATIF COVID-19 DI INDONESIA DAN BELANDA
Authors: NOVIDIANTO RADITYA
Published: May 2021

The economic relationship between Indonesia and the Netherlands is a good trade relationship, but the spread of COVID-19 disrupts the two countries' economies. Both countries need to have an explanation regarding the condition of COVID-19 to raise economic market sentiment. Based on this, Hybrid and non-hybrid models are used to predict the dispersion conditions and compare them through the MAPE value. The double-exponential nonlinear logistic regression hybrid model on the cumulative number of COVID-19 is not suitable for use in the Netherlands COVID-19 cases but is suitable for use in the cumulative number of COVID-19 cases Indonesia. The hybrid nonlinear regression logistic-double exponential model is one way to optimize MAPE, especially in training data. Based on the hybrid non-client regression logistic model, the peak incidence of Covid-19 in the Netherlands is estimated at 22 November 2020, and the hybrid nonlinear regression logistic-Double exponential model predicts that the peak of Covid-19 occurs in Indonesia on 28 November 2020. the Netherlands wave is around 2.83 percent and Indonesia 1.62 percent. Therefore the decline in Indonesia is predicted to be faster, but the Netherlands will reach the peak of the Indonesian news wave.
B7 Sperrung in Wuppertal als Reallabor zur Untersuchung des Modal-Shift-Potentials
Authors: Spiker Olivia
Published: May 2021

Die B7-Sperrung in Wuppertal hat zu einer Reduzierung des Kfz-Verkehrs auf der B7 und dem anliegenden Straßennetz sowie zu einer vermehrten Nutzung des ÖPNV geführt. Aus einer Untersuchung, inwieweit sich Interventionen als Pull-Maßnahme eignen, geht hervor, dass aus verschiedenen Auto-NutzerInnentypen unterschiedlich viele NutzerInnen auf den Umweltverbund wechseln. Die Erreichbarkeit von Alternativen ist ein wichtiges Kriterium. Neben objektiven Kriterien ist auch das subjektive Umweltbewusstsein für die Wechselbereitschaft ausschlaggebend.
Modal Shift auf der letzten Meile – Zur Wirksamkeit von Verlagerungsstrategien des städtischen Güterverkehrs und seiner Einbindung in die Verkehrsentwicklungsplanung
Authors: Leerkamp Bert
Published: May 2021

Shifting deliveries from trucks to cargo bikes is a strategic target in several Sustainable Urban Logistic Plans (SULP). Modal shift on the last mile can be justified by reclaiming urban space for pedestrians and bikes and to improve the amenity of using urban spaces. Complementary private car parking needs to be substantially reduced. Recipient-based delivery strategies can contribute to consolidate deliveries in the inner city and provide modal shift to cargo bikes.
Bedarfsorientierte Mobilitätsplanung Zur Relevanz einer mobilitätsorientierten Perspektive für die Beeinflussung der Verkehrsmittelwahl
Authors: Rammert Alexander , Hausigke Sven
Published: May 2021

Dieser Beitrag diskutiert, inwieweit Mobilität in der deutschen (Verkehrs-)Planungspraxis operationalisiert werden kann und welche Konsequenzen in Hinblick auf die Verkehrsmittelwahl damit einhergehen. Hierfür werden zunächst die theoretischen Grundlagen der Mobilitätsverständnisse sowie der Bedürfnistheorien dargelegt, bevor anschließend mit dem Begriff ‚Mobilitätsbedarf‘ eine alternative Planungsgröße konzeptioniert wird. Diese theoretischen Diskussionen werden im Anschluss am Beispiel des neuen Planungsinstruments der Mobilitätsberichterstattung planungspraktisch operationalisiert.
Effect on the fatty acid profiles of a microalgae strain (Dunaliella tertiolecta) using different lipid extraction techniques
Authors: Gómez-Cordova Fidel , Palomares-Ruiz Irma , Santos-Ballardo David , Mejias-Brizuela Nildia
Published: May 2021

Biodiesel is subject of research because it is less polluting when used in pure form or mixed with petroleum diesel. Microalgae are now a material new in research for mass production of biodiesel, so the techniques used for cell growth, biomass extraction and lipid extraction influence the profile of fatty acids susceptible to transesterification and consequently the quality of biofuel. This work shows the effect on the fatty acid profile of a Dunaliella tertiolecta strain using two lipid extraction techniques. For this, the culture was carried out in the medium F/2, the recovery of the biomass was carried out by sedimentation-flocculation with NaOH and once dry it was subjected to extraction with solvent by Soxhlet and by ultrasound to obtain lipids under the methodology by Bligh & Dyer. The fatty acids were analyzed by gas chromatography and the profile is made up of saturated-monounsaturated-polyunsaturated fatty acids and shows differences regarding the presence-absence and dry weight content. This represents a contribution to analyze the effect on physicochemical parameters established in Mexican regulations regarding the quality of biodiesel and to determine the potential of the microalgae strain for such production.
Characterization of SARS-CoV-2 cases in Mexico using data mining
Authors: Luna-Ramírez Enrique , Soria-Cruz Jorge , Velarde-Martínez Apolinar , Taya-Acosta Edgar Aurelio
Published: May 2021

In this paper, it is realized an analysis of the data published by the Federal Government of Mexico on the cases related to the test for detecting the presence of the SARS-CoV-2 virus, that originates the COVID-19 disease. More than a million cases were analyzed, most of which were positive to the test. For this study, twenty-one significant variables were considered, included the result of the test and the cases of death, going through the different factors that complicate a person’s health such as diabetes, chronic obstructive pulmonary disease (COPD), asthma, hypertension, obesity and smoking, among others. At the beginning of the study, the preparation of the data was carried out so that they could be treated using data mining techniques, based on the CRISP-DM methodology for extraction of knowledge. Thus, with the help of this type of techniques, data models were generated to characterize the development of the COVID-19 disease in the national and local (by States) panorama. As an important part of the models, various rules or correlations were observed among the different variables, which could be used to predict, in part, the future development of the COVID-19 disease in Mexico and, consequently, to establish best practices that target to reduce its social impact.
Learning the parabola through semiotic records in university students
Authors: Encinas-Pablos Francisco Javier , Peralta-García Julia Xochilt , Cuevas-Salazar Omar , Osorio-Sánchez Mucio
Published: May 2021

Learning achieved by students in their first course of mathematics at the university reflects a low achievement, which is especially observed in the topic of the parabola. Due to this problem, the objective of improving the academic achievement of students in that topic, through a didactic strategy based on semiotic representations, was proposed. To this end, a quantitative inquiry was carried out, with a pre-test post-test design, on both a control group and an experimental group. There, a total of 44 students, of an average age of 19 years who were taking the subject of Mathematics Foundations, participated. It was found that the gain between the post-test and pre-test measurement was significantly higher (p<0.01) in the experimental group with respect to the control group, where the conventional strategy for the course was being used. It is concluded that it is possible to improve the learning of the parabola in students through the strategy based on semiotic representations, and that it is highly recommended to apply it for the learning of other mathematical objects in the basic sciences courses of the engineering division.
Gömülü Süt Azı Dişlerin Prevalansı: Retrospektif Bir Çalışma
Authors: ÇALIŞKAN Seçil , ÖZDEMİR Canan , BAYRAK Şule , AYYILDIZ Sena
Published: May 2021

Amaç: Bu çalışmada, gömülü süt azı dişlerin prevalansını ve yaş, cinsiyet, dentisyon tipi, bulunduğu çene, gömülülük tipi ve altındaki daimi dişin varlığına göre dağılımını belirlemek amaçlandı.
Materyal ve metod: Çalışmada, Ocak 2016-Aralık 2018 tarihleri arasında 4-14 yaş aralığındaki toplam 19.000 hastanın panoramik radyografileri retrospektif olarak değerlendirildi. Hastanın yaşı, cinsiyeti, dentisyon tipi, gömülü süt azı dişinin numarası ve lokasyonu, gömülülük tipi ve gömülü süt azıların altında daimi diş olup/olmadığı kaydedildi. Verilerin istatistiksel olarak değerlendirilmesinde tanımlayıcı istatistikler ve Kolmogorov-Simirnov testi kullanıldı.
Bulgular: Çalışmada gömülü süt azı dişi görülme oranı %0.17 (n=32 hasta) olarak tespit edildi. Gömülü süt azı dişi tespit edilen hastaların yarısının süt dişlenme döneminde, yarısının karışık dişlenme döneminde olduğu belirlendi. 32 hastada toplam 38 gömülü süt azı dişi olduğu ve bu dişlerin 6 tanesinin primer gömülü, 32 tanesinin ise sekonder gömülü olduğu gözlendi. Alt çenede, üst çeneye göre daha fazla gömülü süt azı dişine rastlanıldı.
Sonuç: Süt dentistonda nadir görülen bir sürme problemi olan gömülü kalma durumu, rutin klinik ve radyografik muayenede sıklıkla gözden kaçmaktadır. Bu dişlerin erken teşhisi ve tedavisi olası dental ve ortodontik sorunların önüne geçecektir.
Applying Systems Thinking to Education: The RISE Systems Framework
Authors: Spivack Marla
Published: May 2021

Many education systems in low- and middle-income countries are experiencing a learning crisis. Many efforts to address this crisis do not account for the system features of education, meaning that they fail to consider the ways that interactions and feedback loops produce outcomes. Thinking through the feedback relationships that produce the education system can be challenging. The RISE Education Systems Framework, which is sufficiently structured to give boundaries to the analysis but sufficiently flexible to be adapted to multiple scenarios, can be helpful. The RISE Framework identifies four key relationships in an education system: politics, compact, management, and voice and choice; and five features that can be used to describe these relationships: delegation, finance, information, support, and motivation. This Framework can be a useful approach for characterising the key actors and interactions in the education system, thinking through how these interactions produce systems outcomes, and identifying ways to intervene that can shift the system towards better outcomes.
From problem-solving to sensemaking: A comparative meta-analysis of preparatory approaches for future learning
Authors: Sinha Tanmay , Kapur Manu
Published: May 2021

Against the backdrop of a growing body of research showing the effectiveness of problem-solving activities followed by instruction (PS-I), we report a meta-analysis of the effectiveness of three broad categories of preparatory activities on future learning from instruction: (a) problem-solving followed by instruction (PS-I), (b) scaffolded problem-solving followed by instruction (+PS-I), or (c) an alternative sensemaking activity followed by instruction (!PS-I)? We examined 118 experimental comparisons spanning 33 articles that compared PS-I with +PS-I and !PS-I designs. Although scaffolding was descriptively associated with a small effect size, there was no significant difference relative to PS-I (Hedge’s g -0.08 [95% CI -0.20, 0.04]). Additionally, PS-I exhibited a non-significant moderate effect (Hedge’s g 0.22 [95% CI -0.06, 0.51]) compared to !PS-I. Bayesian analyses strongly favored the null hypothesis for the comparison of PS-I with +PS-I (suggesting a 99% probability of the difference in effect between these designs being less than 0.2), while it suggested a 40.37% probability of at least a moderate effect favoring PS-I relative to !PS-I. Further, the estimation of true effect sizes after accounting for the publication bias suggested moderate effect sizes in favor of PS-I, when considering both comparison conditions +PS-I (Hedge’s g 0.55) and !PS-I (Hedge’s g 0.64).
The Effects of Ozone Exposure on Aged Soybean Seeds Stored in Different Packaging
Authors: Ambarsari Indrie , Cempaka Intan Gilang , Santoso Sigit Budi , Wulanjari Munir Eti , Nur Muhammad
Published: May 2021

This article describes an idea about improving the aged soybean seed quality through ozone application based on the consideration that the ozone's oxidative and reactive nature could preserve agriculture commodities during storage. Using soybean seeds that were naturally aged in room temperature storage (25±5°C) for two months, gaseous ozone's efficacy in rejuvenating the aged seeds was examined. The aged seeds were divided into three different packages: open container, polypropylene woven sack, and vacuum polyethylene plastic. Gaseous ozone at a capacity of 150 g/h was continuously exposed on packaged seeds during six months of storage under low temperature (18±5°C). The authors found that ozone in specific limit exposure could improve physiological characteristics and inhibit some chemical properties deterioration of aged soybean seeds during storage. Our technique allows for improvement in germination percentage and germination rate of aged seeds in the fourth month of ozone exposure (p<0.05). However, these physiological parameters decreased significantly in the sixth month of ozone exposure, signing that prolonged ozone exposure would lead to adverse effects due to excessive oxidation. The result also showed that ozone storage significantly retard the elevation of moisture and free fatty acid content of aged soybean seeds. The ozone effectiveness evaluation is confirmed in all packaging conditions, but the vacuum packaging offered better preservation on almost entirely seed quality parameters during storage, except for protein. This research result provides a promising technique to restore aged seed quality and can be used for better seed provision in the seed industry.
The Potency of Bifidobacterium spp. as an Alternative to Antibiotic Growth Promoters on Feed Conversion Ratio, Feed Efficiency, and Nutrient Intake in Laying Hens
Authors: Yulianto Andreas Berny , Al Arif Anam , Lokapirnasari Widya Paramita
Published: May 2021

This article describes a new idea about using Bifidobacteriumsp isolates as an alternative to antibiotic growth promoters, based on the ability of Bifidobacteriumsp isolates, which have the potential as a probiotic in laying hens. This study aims to prove that Bifobacteriumsp could improve production performance, including feed conversion ratio, feed efficiency, and nutrient intake (feed intake, crude protein intake, crude fiber intake, lipid intake, and organic matter). A total of 150 laying hens at 25 weeks of age were divided into three groups (P0: control, P1: 0.1% antibiotic growth promoters, P1: 0.05% Bifidobacterium spp. probiotic) and fed on a basal diet containing 2750 kcal/kg metabolizable energy and 18% crude protein for four weeks. The different supplementation to the basal diets showed significant differences (p<0.05) on feed conversion ratio, feed efficiency, feed intake, crude protein intake, crude fiber intake, lipid intake, and organic matter intake among the treatments. However, feed intake, feed conversion ratio, crude protein intake, crude fiber intake, lipid intake, and organic matter intake were lowest in the group fed with 0.5% of Bifidobacterium spp. The highest feed efficiency was obtained from the groups fed with 0.5% of Bifidobacterium spp, compared with the control and supplemented antibiotics growth promoters group. 0.5% of Bifidobacterium spp. supplementation to the diet of laying hens is beneficial for increasing feed efficiency and improving feed conversion ratio. The practical and theoretical significance of the results is that Bifidobacterium spp. can be used to improve production performance in laying hens.
The Source of Output Growth: Productivity Performance in the Indonesian Crude Palm Oil Industry
Authors: Sari Dyah Wulan , Islamiya Haura Azzahra Tarbiyah , Restikasari Wenny , Salmah Emi
Published: May 2021

Indonesia has become the largest producer and exporter of crude palm oil commodities in the world. Therefore, the production of CPO turns out to be very greedy for land. There are any problems in production CPO, therefore the study aims to develop a conceptual framework of the source of output growth, whether driven by input or productivity growth, and to implement this concept by investigating the source of output growth in the crude palm oil industry in Indonesia. The investigation applies firm-level panel data and follows a quantitative approach using general method of moments to estimate the production coefficients and calculate the input and productivity growth. The result shows that the output growth of the crude palm oil industry does not lead in productivity growth driven. It seems to be driven by input growth, not by productivity growth. Since growth is still driven by input, the crude palm oil industry will be less competitive in the world market. The high world demand for crude palm oil commodities from Indonesia must be met by using more efficient input factors, optimizing production scale, and supporting technological progress. The government, therefore, must have strategies that are more competitive in the global market.
Photovoltaic Placement for Losses Reduction and Voltage Stability Enhancement in the Port Moresby System, Papua New Guinea
Authors: Arief Ardiaty , Nappu Muhammad Bachtiar , Thomas Ian
Published: May 2021

The power grid in the capital city of Papua New Guinea, Port Moresby, still experiences problems of voltage stability and power losses due to many factors which is the common problem that most power systems continue to mitigate until today. The factors that give rise to these problems are the imbalance between generation and load and the long-distance of transmission lines. A possible solution to counteract these problems is to integrate photovoltaic systems into the power grid, especially at the load distribution network. This paper presents PV placement for Port Moresby system by using two stages, which are (1) identification of location with good irradiance then (2) determination of PV location by minimizing power losses and improving the voltage profile. This alternative approach is considered because Port Moresby city is situated in a location that is exposed to a significant amount of solar radiation of about 1976 kWh/m2 GHI annually. Therefore, this makes Port Moresby a suitable location to utilize this type of renewable energy technology. This research provides an analysis of the power flow within the Port Moresby grid through simulation using the Newton-Raphson method. The analysis and simulations are performed to identify the most sensitive buses within the system. Based on their high irradiance levels, these specific areas are identified as the best possible areas for integrating the photovoltaic system.
STUDY FOR EVALUATION OF COMPRISING OF CLOMIPHENE CITRATE, HUMAN MENOPAUSAL GONADOTROPIN WITH OR WITHOUT FOLLICLE STIMULATING HORMONE FOR OVULATION INDUCTION IN PATIENTS WITH INFERTILITY FOR INTRAUTERINE INSEMINATION AT NMCH, JAMUHAR, SASARAM, BIHAR
Authors: Sinha Smriti , Sinha Rita , Jana Debarshi
Published: May 2021

Background: To compare two protocols comprising of FSH/CC/HMG and CC/HMG for ovulation induction and IUI in women with infertility. Methods: 60 women with unexplained infertility were randomized using sequentially numbered opaque envelope method. Group A received inj FSH 150 units on day 2 of menstrual cycle and clomiphene citrate 100 mg from day 3 - 7, followed by injection HMG 150 units on day 9 of menstrual cycle. Group B received clomiphene citrate 100 mg from day 3-7, and HMG 150 units on day 7 and 9 of the menstrual cycle. Ovulation triggered with hCG 5000 units when dominant follicle was 18mm. Single IUI was done 36-42 hours afterwards. Results: Pregnancy occurred in 3 out of 30 women in 116 cycles Group A (with FSH) with a pregnancy rate of 10 percent, and 2.8% per cycle. In group B (without FSH) pregnancy occurred in 3 out of 30 women in 117 cycles with pregnancy rate of 10 percent, and 2.6% per cycle. The number of follicles per cycle was 1.36 and follicle size was 18.57 mm in group A. While in Group B numbers of follicles per cycle were 1.22, with average size of 18.9mm. Mean endometrial thickness was 7.7mm in Group A and 6.37 in Group B (p=.01, signicant). Mild OHSS was observed in one woman in Group B. No other side effects were observed in both the groups. Conclusions: The controlled ovarian stimulation regimes used in this study are equally effective, easy to administer, require less intensive monitoring and fewer medications, with little risk of OHSS and multiple gestation.
A STUDY ON PATTERN OF INTRACRANIAL INJURIES IN CASES OF FATAL HEAD INJURY
Authors: Kumar Dharmendra , Ritu Ritu , Choudhary Sohan Prasad , Jana Debarshi
Published: May 2021

Head injuries are the most common cause of death in trauma patients throughout the world. These injuries occur due to many causes most common
of them being road trafc accidents, followed by fall, assault, etc. The dissection technique of scalp, skull and dura was in accordance with the
procedures suggested by Gresham GA and Turner AF and the brain dissection as suggested by Ludwig J. Among the 42 cases, highest number of
cases was between the age of 51-60 years with 12 cases (28.6%) and the lowest < 20 years with 4 cases (9.5%). The highest number of cases were
seen among the upper middle class with 19(45.2%). There were 30 (71.4%) cases of road trafc accidents and the remaining 12 (28.6%) were case
of fall (fall from height, fall of objects etc). Among the cases with skull fracture 23.8% (10) had linear fractures, 11.9% (5) had comminuted
fracture, 2.4% (1) had diastatic fracture and others (61.9%) had no fractures. Subdural hemorrhage was the commonest (n=34) intracranial injury
observed. Highest number of fractures were present in the middle cranial fossa (n=16) among them 11 was linear fractures and 5 were comminuted
fractures.
ROLE OF SUBCUTANEOUS SUCTION DRAIN IN REDUCING SURGICAL SITE INFECTIONS AFTER EMERGENCY LAPAROTOMY AT SKMCH, MUZAFFARPUR, BIHAR
Authors: Kumar Sanjay , Vikram Kumar , Kumar Manoj , Jana Debarshi
Published: May 2021

Background: One of important morbidity postoperatively is surgical site infection and the important cause is collection of blood and serous uids
which can get infected and this factor is even more important in emergency laparotomies. our prospective randomised study compares the
incidence of surgical site infection in post emergency abdominal surgical wounds with subcutaneous suction drains versus those in whom drain was
not placed. Methods: A prospective interventional study of 100 subjects done in department of surgery at Sri Krishna Medical College and
Hospital, Muzaffarpur, Bihar. On the basis of exclusion and inclusion criteria patient were randomly selected for cases (with post-operative suction
drain) and controls. subcutaneous drain in emergency setting play signicant role in reducing the incidence of surgical site infection which is
signicant statistically. Results: 24% of patients in drain group develop surgical site infections. 50% of patients in non-drain group develop
infection. Incidence of infection in drain group was lower than the no drain group (p value 0.05) and was statistically signicant. Conclusions:
Subcutaneous drain in emergency laparotomy play signicant role in reducing the incidence of surgical site infection
CLINICALAND ELECTROPHYSIOLOGICAL STUDY OF THE PERIPHERAL NERVOUS SYSTEM IN THE ELDERLY PEOPLE IN DARBHANGA
Authors: Bala Nutan , Priyanka Priyanka , Kumari Sheela , Jana Debarshi
Published: May 2021

The effect of age on the peripheral nervous system was investigated by clinical examination and neurophysiological studies in 59 subjects aged 60-
103 years and 23 young subjects. Afull laboratory screen for factors which, though clinically silent, may constitute risk factors (RFs) for peripheral
neuropathy was also performed in the elderly subjects. Our ndings show that the presence of RFs affects exceptionally the electrophysiological
parameters in a statistically signicant way.
The age-dependent changes in nerve conduction parameters were well predicted by non-linear models. The simultaneous electromyographical
study demonstrates the re-innervation capacity of the motor system
Laparoscopic resection for gastric GISTs: surgical and long-term outcomes of 133 cases
Authors: Jian-Xian Lin  , Qian Yu  , Mi Lin  , Chao-Hui Zheng  , Ping Li  , Jian-Wei Xie  , Jun Lu  , Qi-Yue Chen  , Long-long Cao  , Ju-li Lin  , Chang-Ming Huang
Published: May 2021

Background It aims to evaluate the surgical efficacy and long-term survival of different laparoscopic surgeries for gastric GISTs. Methods From a prospectively collected database, 133 patients with primary gastric GISTs undergoing laparoscopic surgery were selected from January 2008 to December 2014. They were divided into three groups according to the different operations that were performed, including laparoscopic gastric wedge resection (LWR Group, n=103), laparoscopic subtotal gastrectomy (LSG Group, n=18) and laparoscopic total gastrectomy (LTG group, n=12). Clinicopathological features and short- and long-term outcomes were analyzed retrospectively. Results All patients had received R0 resection. There were no differences among the three groups in age, BMI or NIH risk classification. Compared with the LSG group and LTG group, the LWR group had a shorter operative time, less blood loss, fewer operative complications and shorter time to ground activities, semi-liquid diet and hospital stay (P<0.05). There was no statistically significant difference in time to first flatus and liquid diet or in the rate of postoperative complications (P<0.05). In the patients with a large tumor (size≥5 cm), LWR was significantly associated with shorter operative time, less blood loss and shorter hospital stay compared with the laparoscopic gastric non-wedge resection (N-LWR) (P<0.05). The median follow-up was 30 months, with 4 cases of recurrence and 3 deaths. The 5-year cumulative survival rate was similar among the three groups (P>0.05). Conclusions Compared with LSG and LTG, more favorable minimally invasive results can be achieved from LWR for gastric GISTs, which may be the optimal surgical procedure.
Resectable gastric signet ring cell carcinoma: clinicopathological characteristics and survival outcomes
Authors: Ines Zemni  , Houyem Mansouri  , Ines Ben Safta  , Mohamed Ali Ayadi  , Tarek Ben Dhiab  , Riadh Chargui  , Khaled Rahal
Published: May 2021

Background: Gastric signet ring cell carcinoma (SRCC) appears to have clinical features and survival rates particularly different from other histological types. The aim of this study was to investigate clinicopathological features and survival outcomes of SRCC and to compare them with non-signet ring cell carcinoma (NSRCC). Methods: We retrospectively studied 145 patients with non-metastatic gastric carcinoma who underwent gastrectomy in our institute from 2005 to 2015. Among them, 36 patients (9.4%) with SRCC were compared to 109 patients (90.6%) with NSRCC. Results: Patients with SRCC presented at a younger age (p=0.001) with more advanced stage III-IV disease (p=0.005) and advanced N stages with a higher rate of pN3 (p=0.0001), a higher number of invaded lymph nodes (p=0.002) and a higher rate of patients with a lymph node ratio exceeding 25% (63.9% vs 36.7, p=0.004). After a median follow up of 35.30 months, there was no significant difference in the 5 years overall (OS) survival between SRCC and NSRCC ((36.7% vs 45.7%, p=0.206).However, the 5 years progressive free survival (PFS) was significantly decreased in case of SRCC (38.7% vs 50.9%, p=0.038) with a higher rate of metastasis in (52.9% vs 29.5%, p=0.013) and peritoneal recurrence (35.3% vs 9.5%, p<0.0001). The main prognostic factors of PFS and OS in SRCC were tumoral stenosis, hypoprotidemia, tumor size, depth of invasion (p=0.001), perineural and lymphovascular invasion, the UICC stage and complete surgical resection. Conclusion: Gastric SRCC have a particular clinicopathological behavior compared to NSRCC suggesting its more aggressive character.
Determinants of surgical morbidity in gastric cancer: experience of a single center and literature review
Authors: Houyem Mansouri  , Ines Zemni  , Mohamed Ali Ayadi  , Ines Ben Safta  , Tarek Ben Dhiab  , Najet Mahjoub  , Leila Achouri  , Khaled Rahal
Published: May 2021

Background This study aimed to evaluate the severity of intraoperative and post operative complications of gastric cancer surgery and to investigate the predictive factors correlated to surgical morbidity. Methods We included 145 patients operated for gastric cancer. We investigated the risk factors associated with complications, length of hospital stay, operative time, and intraoperative blood transfusion (BT). Significant risk factors were analyzed by multiple logistic regression analysis. Results Postoperative complications occurred in 32 patients (22.1 %) and the rate of major complications was 7.6%. The rate of anastomotic fistula was 6.9% and was correlated to diabetes, tumor size, operative time, surgical margin, and extended lymphadenectomy. The mean risk factors for postoperative morbidity were the presence of comorbidities and ASA score (p = 0.021), intraoperative BT (p = 0.045) and prolonged operative time (p = 0.055). Conclusion surgical morbidity of gastric cancer is correlated to the extent of resection as well as the clinical and histological characteristics.
Multivariate versus Univariate Sensor Selection for Spatial Field Estimation
Authors: Nguyen Linh , Thiyagarajan Karthick , Ulapane Nalika , kodagoda sarath
Published: May 2021

The paper discusses the sensor selection problem in estimating spatial ﬁelds. It is demonstrated that selecting a subset of sensors depends on modelling spatial processes. It is ﬁrst proposed to exploit Gaussian process (GP) to model a univariate spatial ﬁeld and multivariate GP (MGP) to jointly represent multivariate spatial phenomena. A Mat´ern cross covariance function is employed in the MGP model to guarantee its cross-covariance matrices to be positive semi-deﬁnite. We then consider two corresponding univariate and multivariate sensor selection problems in effectively monitoring multiple spatial random ﬁelds. The sensor selection approaches were implemented in the real-world experiments and their performances were compared. Difference of results obtained by the univariate and multivariate sensor selection techniques is insigniﬁcant; that is, either of the methods can be efﬁciently used in practice.
Multi-Step Predictions for Adaptive Sampling using Proximal ADMM
Authors: Le Viet-Anh , Nguyen Linh , Nghiem Truong X.
Published: May 2021

The paper presents a novel approach by using multi- step predictions to address the adaptive sampling problem in a resources and obstacles constrained mobile robotic sensor network to efficiently monitor environmental spatial phenomena. It is first proposed to employ the Gaussian process (GP) to represent the spatial field, which can then be used to predict the field at unmeasured locations. The adaptive sampling problem aims to drive the mobile sensors to optimally navigate the environment where the sensors adaptively take measurements of the spatial phenomena at each sampling step. To this end, a conditional entropy based optimality criterion is proposed, which aims to minimize prediction uncertainty of the GP model. By predicting possible measurements the mobile sensors potentially take in a horizon of multiple sampling steps ahead and exploiting the chain rule of the conditional entropy, a multi-step predictions based adaptive sampling optimization problem is formulated. The objective of the optimization problem is to find the optimal sampling paths for the mobile sensors in multiple sampling steps ahead, which then provides their benefits in terms of better navigation, deployment and data collection with more informative sensor readings. However, the optimization problem is nonconvex, complex, constrained and mixed-integer. Therefore, it is proposed to employ the proximal alternating direction method of multipliers algorithm to efficiently solve the problem. More importantly, the solution obtained by the proposed approach is theoretically guaranteed to be converged to a stationary value. Effectiveness of the proposed algorithm was extensively validated by the real- world dataset, where the obtained results are highly promising.
Appendice. Bruno Trentin e il dibattito costituzionale europeo
Authors: Supiot Alain
Published: May 2021

In the context of an article published in2005on foreign readings on the evolution of social law, the distinguished French scholar Alain Supiot connects the elaboration of The Freedom Comes First to the European constitutional debate of the 2000s. Trentin's reflections on the inseparable link between work and knowledge in the third industrial revolution and on the centrality of the person for a political reform project based on the revival of the European social model and on the role of a federal Europe in the governance of globalization are adequately underlined. The transnational dimension of Bruno Trentin's political thought is confirmed in the field of labour law and in the debate on the European social model and the future of Europe
Postfazione. Il socialismo di Bruno Trentin come liberazione della persona
Authors: Mari Giovanni
Published: May 2021

Through the commentary on a particularly interesting period taken from the Introduction to La libertà viene prima, the author intends to focus on Bruno Trentin's idea of socialism. Giovanni Mari underlines how this idea foresees the critique of four theses of the modern socialist tradition: 1) socialism is not a model of society, but a continuous process; 2) in our company the company does not constitute a world in itself; 3) the socialization of property does not solve the problems of democracy; 4) the center of civil coexistence is not constituted by the class but by the person. And four positive theses: 1) the form of political action does not foresee two separate times, first the seizure of power and then the reforms; 2) the measure of society is the freedom of the person; 3) the goal of the socialist process is the self-realization of the person; 4) everything begins with the person who works, that is, with the battle for freedom in work.
QUESTÕES SOBRE A ASCENÇÃO DAS DIREITAS NO CONTEXTO ATUAL:
Authors: Mortellaro Isidoro Davide
Published: May 2021

Entrevista concedida por Isidoro Davide Mortellaro, professor da Universidade de Bari, Itália. Partindo da Itália como um laboratório privilegiado das tendências políticas internacionais, aonde se assistiu o nascimento e a ascensão do fascismo, Mortellaro responde questões referentes à ascensão das direitas no contexto atual.
LA TEORIA DE LA PERSONALIDAD EM ANTONIO GRAMSCI Y SUA IMPLICANCIAS EDUCATIVAS
Authors: Gómez Sebastián
Published: May 2021

Resenha do livro "Il soggetto e l’educazione in Gramsci. Formazione dell’uomo e teoria della personalità".
O NEXO ENTRE O FASCISMO E A IGREJA CATÓLICA NA EDUCAÇÃO A PARTIR DA REFORMA GENTILE
Authors: Silva Deise Rosalio
Published: May 2021

O presente artigo versa sobre a relação entre o fascismo, a igreja e a reforma educacional implementada entre 1922 e 1923. Para tanto, analisará a Reforma Gentile à luz dos escritos carcerários de Gramsci e da produção de alguns autores de referência sobre a história da Itália. O fascismo determinaria uma nova maneira de encarar a educação pública. Mais do que chave fundamental de formação humana, ela passaria a ser instrumentalizadora, uma peça doutrinal do regime, por meio do aprofundamento do caráter dual do ensino, da tutela do ensino religioso e da obstrução de acesso amplo à cultura, ao ensino da gramática, latim e outros conteúdos clássicos e, consequentemente, ao desenvolvimento da reflexão crítica.
NEOPENTECOSTALISMO E NEOLIBERALISMO NO BRASIL
Authors: Cazavechia William Robson , Toledo Cézar de Alencar Arnaut de
Published: May 2021

O objetivo deste artigo é analisar a construção histórica do neopentecostalismo e relacioná-lo com o neoliberalismo no Brasil. Ele emerge de expressões religiosas do pentecostalismo, especialmente nos anos de 1970. Sua presença, cultural e política, é sentida pela utilização que faz dos meios de comunicação social, concomitante ao avanço das políticas e das determinações do neoliberalismo, a partir da década de 1990. É caracterizado pela utilização e pela adaptabilidade de seus ritos, cultos, liturgias à radiodifusão e pela participação institucional consolidada assentado sobre as dinâmicas das mídias e do mercado das coisas ligadas à religião, no âmbito da mística dos media. A materialidade de suas prerrogativas se deve ao exercício de sua atividade prática. Trata-se de uma ideologia adequada ao neoliberalismo pelo fato de que reproduz as desigualdades e mantém a alienação como condição de participação política.
POLÍTICA E EDUCAÇÃO:
Authors: Schlesener Anita
Published: May 2021

Este artigo traz algumas reflexões sobre a religião como ideologia a partir dos escritos de Antonio Gramsci, tendo como referência básica artigos escritos em 1916 e 1917 e fragmentos dos Cadernos do Cárcere, nos quais o autor explicita o significado do ideário religioso na formação do senso comum e a luta de classes como força que move a história. Gramsci acentua as contradições que perpassam a democracia burguesa e como a religião na Itália defende seus interesses políticos e ideológicos pela tentativa legal de controle da educação. Procura-se demonstrar ainda a atualidade destes textos ante os últimos acontecimentos que marcaram a política brasileira.
PROSPECTS FOR THE USE OF TRICHLOROETHYL AMIDES WITH THIOAMIDE FUNCTIONS IN THE TECHNOLOGY OF BRILLIANT NICKEL PLATING
Authors: Shurupov Dmitriy , Andreeva Yuliya , Balyueva Yuliya , Sosnovskaya Nina , Rozencveyg Igor'
Published: May 2021

The influence of organic additives in the nickel-plating sulfate electrolyte on the pos sibility of obtaining shiny coatings is investigated. The presence in the structure of the additive of

trichloramide fragments and substituents containing a thiocarbonyl group-a residue of thiourea or

rubeanoic acid, allows to obtain shiny nickel coatings without the introduction of additional reagents.
DEVELOPMENT OF A PROGRAM FOR CALCULATING THE CONCENTRATION FIELD OF THE DISTRIBUTION OF SULFUR DIOXIDE IN THE AIR
Authors: Blaschinskaya Oksana , Kobozev Vladimir , Patrushev Konstantin
Published: May 2021

A program for calculating the concentration field of the distribution of sulfur dioxide

in the air from a point source of emission using a kinetic model, taking into account the barrier surface

of green spaces, is considered.
ARTIFICIAL INTELLIGENCE IN POWER INDUSTRY
Authors: Konovalov Yuriy , Vaygachev Anton
Published: May 2021

Trends in the development of artificial intelligence and the use of neural networks as

applied to the power industry are considered. It is revealed that the well-known forecasting systems

based on artificial neural networks are difficult to formalize and get an unambiguous solution. There fore, this problem must be solved using a systematic approach that combines the capabilities of artifi cial neural networks and fuzzy logic under conditions of partial uncertainty of parameters
SIMULATION OF EMERGENCY MODES OF POWER SUPPLY SYSTEMS OF NON-TRACTION CONSUMERS
Authors: Lyubchenko Irina
Published: May 2021

The influence of sources of reactive power on the quality of electricity on the tires of

non-traction consumers who receive power from the two-wire-rail line in the event of a short circuit in

the contact network is studied. The results show that the use of sources of reactive power contributes

to the maintenance of voltage on the substation tires, significantly reducing the coefficient of

asymmetry in the reverse sequence.
ELECTROMAGNETIC SAFETY AT THE INTERSECTION OF TRACTION NETWORKS AND POWER LINES WHEN WORKING AT HEIGHT
Authors: Seredkin Dmitriy
Published: May 2021

The electromagnetic fields affecting the personnel during the maintenance of the

traction network from the leiter are considered. The results obtained during calculations using the

methodology developed at IrGUPS and implemented in the Fazonord software package show that the

electric and magnetic field strengths exceed the permissible levels for electrical personnel
LABOR PROTECTION IN THE CHILD CARE CENTER
Authors: Krasnova Anzhela , Glavinskaya Lyubov'
Published: May 2021

The article is devoted to the study of the work of a specialist in labor protection of

the Center for Assistance to children. The article analyzes the implementation of the work on the crea tion of an integrated system of protection of life, health, safety, fire safety, labor protect
STUDY OF THE TOXIC EFFECT OF ISOPROPYLMETACHARBORANE ON THE CNS WITH REPEATED ADMINISTRATION TO RATS
Authors: Makarova Veronika , Usov Konstantin
Published: May 2021

Evaluation of the effect of isopropyl methacarborane on the central nervous system with repeated inhalation in experimental animals was carried out.
FEATURES OF LABOR PROTECTION IN EDUCATIONAL INSTITUTIONS
Authors: Tropnikova Anna , Tropnikov Dmitriy , Igumen'scheva Viktoriya
Published: May 2021

The main features of labor protection in educational institutions are considered on

the example of the Angarsk technical school of building technologies.
FORMATION OF THE CREATIVE PERSONALITY OF THE JUNIOR STUDENT
Authors: Ageeva Ol'ga , Shamsova Yuliya , Sitosanova Ol'ga
Published: May 2021

The article examines one of the ways of forming the creative personality of a junior

student. The main goal of teaching construction from natural material is to form in junior students the

ability to design independently and creatively.
DIGITAL LITERACY
Authors: Grin Nadezhda
Published: May 2021

The article deals with three main aspects of digital literacy.
PERSUASION TACTICS
Authors: Sitosanova Ol'ga
Published: May 2021

The article discusses persuasion tactics and its main aspects
RISK MANAGEMENT TOOLS
Authors: Bychkova Gul'fira
Published: May 2021

A risk management tool is proposed – a universal matrix of preliminary expert as sessment that compares the types of risks and factors that affect the probability of their occurrence

and the amount of damage.
BIS(2-CHLOROPROPENYL)SULFIDE HETEROCYCLIZATION UNDER THE ACTION OF CHALCOGENS IN HYDRAZINE HYDRATE–KOH
Authors: Manuylov Viktor , Nikonova Valentina , Rozencveyg Igor' , Korchevin Nikolay
Published: May 2021

The sense of bis(2-chloropropenyl)sulfide heterocyclization at its interaction with

sulfur, selen and tellur in the hydrazine hydrate–KOH system has been studied. The suggest plausible

mechanism of different heterocycles formation is discussed.
ISOTHIURONIUM SALTS CONTAINING OXYGEN OR NITROGEN ATOMS IN AN ORGANIC FRAGMENT – A NEW TYPE OF GLOSS-FORMING AGENTS IN ELECTROCHEMICAL NICKEL PLATING
Authors: Preina Anastasiya , Dmitrieva Valeriya , Grabel'nyh Valentina , Sosnovskaya Nina
Published: May 2021

Based on chlorex, bis (2-chloroethyl) disubstituted isothiuronium salts containing

additional oxygen or nitrogen atoms have been synthesized for amine and thiourea. The resulting salts

were studied as gloss-forming additives in the Watts electrolyte for the electrochemical production of

shiny nickel coatings. The electrolysis modes that ensure the production of high-quality coatings are

found.
Perspectivas na Horticultura
Authors:   João Paulo Tadeu Dias, Dias João Paulo Tadeu
Published: May 2021

Este livro traz possíveis apontamentos de novas tecnologias em horticultura e apresenta panoramas de técnicas de manejo, colheita e pós-colheita de hortaliças. Tudo isso num mercado cada vez mais dinâmico e com demandas crescentes para produtos orgânicos, sustentáveis e saudáveis, bem como hortaliças não convencionais, processadas minimamente e certificações.
FARMART: COMPLETE SOLUTION OF SMART FARMING
Authors: Lucky Yadav  , Mr.Karthick.S
Published: May 2021

With the increase in technology related to IoT, the concepts are being readily applied to Smart Agriculture that can help in providing data about the land as per the provided input. The farmart is a complete solution of smart farming. Which is developed for the farmers to optimize use of water for agricultural crop. As water supply is becoming a scare in today’s life it is important to adopt the smart solution in farming also. The project describes how irrigation can be handle smartly using IOT. This project can help farmers to save their time and give complete information about the soil and climate by which farmers can decide when crop needs water and as it’s a smart farming it can be done automatically by the farmart. The primary aim of the project is used for detecting soil moisture and climate condition and depending on the condition it sprinkle the water in field. And this entire information is sent to user’s mobile phone through SMS. This system involves using a WSN with different sensor which help farmart to take action. And this whole system is programmed into a microcontroller which control the irrigation system and quantity of water being used. And then send this information to user with the help of duplex communication channel working on an interface of cellular-internet which allow user to get every information on his phone through an app and a webpage.