bluuebunny/crossref_metadata_2025 huggingface dataset:
Client Server Based Integrated School System Design and Implementation
Authors: Natsir M. Fauzi
Published: November 2021

The integrated school system is an application intended to process school data, such as processing student re-registration data, student attendance data, and student payment data. This data is not yet optimal, causing difficulties in finding information about student data and making reports that are not adequate. Therefore, an application that can support and solve these problems is needed. This application is built using the Apache webserver as the web server, using PHP as the programming language, and MySQL in database development. This study aims to design an integrated school system at SMAN 9 Makassar based on client-server. The type of research used is quantitative research, while data collection uses library research methods and field research (observation). The testing method uses black box testing, which focuses on the functional requirements of the software. With the integrated school system at SMAN 9 Makassar based on client-server, it can help staff and employees at SMAN 9 Makassar in terms of managing data related to the school. For example, in managing academic data, finance, libraries, personnel, teacher info, student info, and counseling agency.
Post Operative Cognitive Dysfunction: A Literature Review
Authors: Tambunan Irfan Ferdinand
Published: November 2021

Along with ages, elderly patients with comorbid who undergoing surgicalprocedures are more likely to experience cognitive disorders such as decreasedquality of life and loss of independence. This is known as postoperative cognitivedysfunction. The percentage is quite significant for old age to experience cognitivedisorders. Ages, education level, health and mental status can be a factor causingcognitive disorders. Comprehensive assessment of objective mental, social andfunctional status can increase patient preoperative. Perioperativepharmacological management can reduce the incidence of POCD. For example,minimal use of propofol in spinal anesthesia may reduce POCD in hip fracturesurgery. The use of dexmedetomidine in ventilated patients in the ICU may alsoreduce POCD. The etiology is still unclear, but there is a suspicion that the useof neurotoxic anesthetics can trigger the occurrence of POCD, but this has notbeen further proven.
A Mathematical Model on Linkage Leakage in Sewage Pipes Laid in a Porous Ground Using Computation Fluid Dynamics.
Authors: Ebelait Joseph , Twaibu Semwogerere , Nagulama Moses , Keikara Asaph Muhumuza
Published: November 2021

This study describes the linkage leakage in sewage pipes through a porous media using computational fluid dynamics with the presence of one leak through fluid simulations using the Ansys fluent 17.2 commercial software based on standard k-ε model under steady-state condition. The pipe section is three-dimensional with a pipe length of 40 mm, a pipe diameter of 20 mm, and leak orifice diameter of 2 mm with a porous media of length 25 mm and width 30 mm. The interest of this study was to reduce the rate of sewage leakage in pipes laid underground by use computational fluid dynamics. The simulation results obtained shows that when the flow is subjected to an outlet pressure between 100000 Pa to 275000 Pa the sewage leaks at pressures of 99499 Pa to 278799.8 Pa indicating that increase of outlet pressures increases the pressure at the leak point and also an increase in the inlet velocity resulted into an increase of velocity at the leak point and no significant change in sewage flow rate with increased inlet velocities. Therefore, monitoring of the pressure and velocity fields along the pipeline is an extremely important tool to identify leaks since these fields are affected by perturbations both before the leak point and after the leak point.
Settlement Schemes and their Implication on Eastern Mau Water Catchment, Kenya
Authors: Cherotich Fredah , Letema Sammy
Published: November 2021

Settlement schemes are aimed at settling landless people and those displaced by disasters to support socio-economic and environmental development of a country. Eastern Mau Forest Reserve is an important water catchment that has settlement schemes established, which has led to encroachments and degradation of the catchment. This paper, therefore, assesses the implications of human settlements on Eastern Mau water catchment by examining the trends in land use/cover change and river flows for four decades. Primary data was collected from key informant interviews based on purposive sampling whereas secondary data was derived from Landsat satellite images over a 10-year period and analysed using Maximum Likelihood Function from ArcGIS. Data on river flows from River Njoro was obtained from Water Resources Authority Office in Nakuru. Rainfall and temperature data were obtained from Kenya Meteorological Station in Nakuru. Time series analysis is used to understand the trend in river flows over time while Pearson correlation is used to determine relationship between farmlands and river flows. The results indicate a sharp decline in forest cover by 42.7% and an increase in farmlands by 41%. Dense vegetation and farmlands have an inverse relationship as an increase in farmlands lead to a decrease in forest cover. People have settled beyond the established settlement schemes boundaries leading to encroachment and drying up of some rivers. There is also an increase in rainfall and river flows over the years, with monthly river flows increasing in peak flows and declining during low seasons. There is a positive correlation between farmlands and river flows between 1989 and 2020. There is need for regeneration of encroached areas and defining boundary of Eastern Mau to allow initiatives and interventions that help with sustainable management of the catchment area.
An Analytical Review of Existing Supermarket Billing Systems
Authors: Gilbert Ocen , Twaibu Semwogerere , Umar Sekamwa , Davis Matovu
Published: November 2021

Retail shops and stores form part of the nation’s business sector involved in selling and providing several goods and services. The main objective was to study and analyse existing supermarket billing systems and possibly identify their weaknesses and strengths. This will enable us to generate an RFID billing system that is unique and even more advantageous than the existing systems. The methodology used was qualitative involving hard and soft document reviews and observational experiments. Findings revealed that there are several billing systems which include the manual price tag system where a mini-computer (calculator) is used to sum up the total bill per customer at a time, the barcode reader system, the smart chart with store cards, and the ‘smart shopping cart. It was noted that these have the advantage of giving confidence all the items are counted, paid for, save time and are cheap to use. However, they are also associated with several weaknesses like long waiting time (queues), the systems require a lot of human effort to read the barcodes which is not efficient, barcode systems sometimes fail to read, possible human errors while entering information, possible cheating through wrongly-fed information and the desynchronization effects because of the unreliable network. This was an awareness drive about the existing supermarket billing systems in order to enhance further studies on better ones
Consumption of Non-Food Consumer Goods by Families of Collective Farmers of the Molotov Region in the First Five Years After the War (1946–1950)
Authors:   Ural State University of Economics, Mamyachenkov Vladimir N.
Published: November 2021

Non-food consumer goods have always been, are and will remain important attributes of a person’s life. In addition to purely physiological, non-food goods satisfy a number of other needs that shape people as thinking creatures and distinguish them from animals. The article examines the problem of consumption of non-food consumer goods by collective farmers in one of the regions of the Urals, i.e. the former Molotov Region (presently, the Perm Region) during the first years after the Great Patriotic War (1946–1950). The topic of this article is relevant, since the problem of scientifically grounded and balanced consumption of non-food consumer goods by the population remains unresolved. The author turned to materials kept in two archives: Russian State Archives of Economics and State Archives of the Sverdlovsk Region. Some of these documents have never been published, including household budget surveys, which have a long history in Russia. Attention is focused on the fact that the determining factor in the material living conditions of collective farmers during the first post-war years was the permanent shortage of almost all consumer goods. The author demonstrates that in the period under study the consumption level of non-food consumer goods by collective farmers was unsatisfactory. It should be noted that such a low level of consumption by Molotov Region peasants in the first post-war years was no exception. It is concluded that there were no grounds for a rapid growth in the consumption of non-food consumer goods by this “secondary” category of the population (which collective farmers were at the time) during the period under study.
Political Sentiments of White Émigrés in the Far East in the 1920s
Authors:   Kursk State University, Pashin Vasiliy P.
Published: November 2021

Based on the documents from the Central Archives of the Foreign Intelligence Service of the Russian Federation and the State Archives of the Russian Federation, analysed in line with the anthropological approach, this article describes in broad outline the sentiments of white émigrés in the Far East during the 1920s. The archival documents include informant reports from the Beijing and Shanghai residencies of the Foreign Department of the Joint State Political Directorate (OGPU), summaries and analytical reports of the Counterintelligence Department of the OGPU, reports of operational officers of the Foreign Department of the OGPU, official and personal letters, reports and correspondence of top White Guard leaders, and reports from Chinese newspapers. The paper specifies the total number and location of exiles in the Far East. Further, it dwells on the reasons for Russian citizens’ emigration to China and mentions their peacetime occupations in Russia. Moreover, the article describes the attempts of foreign adversaries to involve white émigrés in anti-Soviet activities and the reasons for their failures. It is shown that white émigrés formed organizations for the purpose of cultural and other communication in a kindred environment and for mutual moral and material support. A conclusion is substantiated that the dogma of the irreconcilability of class interests influenced the tendentious selection of information about white émigrés, about their general “hostility” towards the Soviet Union. In addition, it is alleged here that the majority of white émigrés, including some of their leaders, wanted to return to their homeland. This conclusion is based not only on analytical information reports compiled by secret agents of the GPU-OGPU, but also on surveys initiated by top white émigré leaders and carried out abroad in the 1920s.
Qualitätsparameter und deren Wirkung
Authors: Behr Hans Martin , Obernberger Ingwald , Hartmann Hans , Schön Claudia , Mack Robert
Published: November 2021

Holzpellets der Qualitätsklasse A1 sind der derzeit am konsequentesten normierte Holzbrennstoff. Trotzdem weisen auch solche Pellets in der Feuerung ein deutlich unterschiedliches Emissions- und Ascheschmelzverhalten auf. Dies liegt vor allem daran, dass verschiedene Brennstoffkenndaten in der Normung gar nicht betrachtet werden. Doch deren verbrennungstechnische Bedeutung ist erheblich, sie wurde jetzt im Forschungsprojekt „FuturePelletSpec“ an mehreren Pelletfeuerungen nachgewiesen. Wenn daraus neue und erweiterte Brennstoffanforderungen abgeleitet werden sollen, sind entsprechende Schnellbestimmungsmethoden und vereinfachte Analyseverfahren erforderlich.
How Servant Leaders Psychologically Empower Their
Followers
Authors: Zorlu Özcan , Baytok Ahmet , Avan Ali , İnci Emre
Published: November 2021

This study
aims to examine any possible effects
of servant leadership (SL) on psychological empowerment
(PE) in terms of sub dimensionality. Implementing convenience sampling, 356 questionnaires were collected from five-star hotel employees in Antalya.
The overall relationships were tested by conducting Pearson’s correlation
analysis, and all constructs were subjected to the exploratory factor analysis
(EFA). Later on, confirmatory factor analysis (CFA) was conducted in terms of providing
support for dimensionality and confirmed convergent and discriminant validity
via Amos. To test the hypothesized model, structural equation modeling was employed.
The model showed that Agapao love has a substantial significant positive effect
on the meaning sub-dimension of the PE, and the same effect was observed in the
competence and impact sub-dimensions of the PE. Along with Agapao love, trust was
also significant and had positive effects on PE sub-dimensions. Referring to
our discussion in this paper, leaders should support their followers in terms
of psychological empowerment and preferably closely interact with their
subordinates as an expected leadership behavior in service enterprises. Besides,
trustworthiness is a crucial cue for kitchen employees in terms of motivation,
inspiration, and competence.
Can a Mature Sun & Beach Tourist Destination
Change Its Image Among Tourists?
Authors: Marin Jaume , Grijalvo Marc , Mundet Lluís
Published: November 2021

A destination’s image plays a central role in
conditioning the behavior of visiting tourists, and aligning tourism strategies
with social networks may contribute to a destination improving its image among
visitors. This study focuses on the impact of tourist strategies on how the
tourist’s image of the destination changes. A case study conducted in Lloret de
Mar, a mature destination with a new strategic plan to change its tourist’s
image, is analyzed by monitoring the comments made by tourists on social
networks over three years. Using software developed by Mabrian, over 600,000 Instagram
and Twitter comments were analyzed to verify whether Lloret de Mar's efforts were
giving results in their main markets. The results show a perception of change
in the destination’s image, which in turn leads to de-seasonalization and
diversification of the destination’s products. The research into and
implementation of a different strategic plan have enabled a repositioning of the
town’s image in its different markets. Despite this, however, Lloret de Mar remains
a sun and sand destination.
Reflection on the benignity or pathology of the presence of U waves in the electrocardiogram
Authors: IK Iribar Dieguez , J Lucas Cabornero , M Lopetegui Cano
Published: November 2021

We present the electrocardiogram (Figure 1) of a 14-year-old man in which, without related pathology, and incidentally in the context of a consultation for another reason, a U wave was detected in precordial leads V3 and V4. Does that U wave have pathological significance?
Effects of Electrotherapy on Delayed Onset Muscle Soreness (DOMS)
Authors: Sara Hosseini Seyedeh
Published: November 2021

In this article, the reasons for the occurrence of Delayed Onset Muscle Soreness (DOMS) and the effect of electrotherapy on it were discussed. Electrotherapy is a non-invasive and easy method to treat DOMS and muscle fatigue. As a result of intense and abnormal exercise, the creatine phosphokinase enzyme in the muscle increases and DOMS occur. DOMS can be treated with electrotherapy techniques such as micro-current electrotherapy. Micro-currents devices reduce the severity of DOMS symptoms by maintaining intracellular calcium homeostasis. Devices such as Transcutaneous Electrical Nerve Stimulation (TENS) and Micro-Current Electrical Therapy (MET) belong to the category of micro-currents. The number of electrotherapy sessions after the occurrence of DOMS and the frequency of electrotherapy devices are two important factors in the treatment of DOMS. TENS conducts electrical current to the body through electrodes that attach to the skin, and helping to reduce pain by releasing endorphins, a natural painkiller, and blocking the passage of pain to the brain. MET uses resonant frequencies to aid in deeper and longer treatment, increase the body’s production of natural catalysts in the healing process, and is more useful in chronic pain than TENS. Research has shown that electrotherapy has been shown to improve DOMS symptoms.
Intentional Replantation and 3d Obturation with Biodentine of a Resorbed Root in Young People: A Case Report
Authors: Messina Giovanni , Boschini Luca , dAlcontres Luigi Stagno , Milani Stefano , Cipollina Maria Elena , Bonandi Gaia , Bugea Calogero
Published: November 2021

Referred patient 14 years old (in orthodontic treatment) for a suspected resorption on a 2.1 that was exposed to a trauma [1]. After an apical x ray, a cone beam was performed to have a complete diagnosis [2,3]. Almost the 80% of the root is resorbed, after achieving the parents’ consent to the treatment, was planned an intentional replantation [4] and a retrograde approach. In case like this the treatment’s goal is an intentional replantation to stop the root resorption, removing all the resorbing tissue and rebuild the root by biodentine’s use [5]. The tooth was replanted and splinted to the ortho appliances to allow a precise position of replantation. The final X ray control confirmed the correct rebuilding of the root anatomy. After two weeks the endodontic treatment was performed at all. After 6 months the patient has completed the ortho treatment and the X ray control revealed a good response, the biodentine‘s stability and no sign of tissue inflammation. Since the good preliminary results at six months of the intentional replantation with Biodentine root rebuilding, this treatment, in young patient, can be considered as a good option to the maintainability of the tooth till the adult age and to long lasting prosthetic treatments.
Mathematical Modelling of the Addiction of Drug Substances among Students in Tertiary Institutions in Nigeria
Authors: Binuyo Adeyemi O , Osuntokun Oludare Temitope
Published: November 2021

In this paper, we formulated a mathematical model for the addiction of drug substances among students in the tertiary institutions in Nigeria. The model explains the dynamics of the use and the addiction of certain substances that are perceived as mood changing by the students in the tertiary institutions in Nigeria. The drug model will be analysed qualitatively. The basic reproductive number which is the drug addiction number of the mathematical model was determined using the next generation procedure. It was found that the drug free equilibrium point was found to be locally asymptotically stable whenever the drug addiction number is less than one and unstable otherwise. The analysis revealed that an increase in the recruitment rate of students and the rate at which the students return to the use and addiction of drugs would cause an increase in the drug addiction number. There are impacts on interaction among non-drug users and drug users in the system with time. An increase in the contact or limitation rate increases the population of drug users. It is hereby recommended that; government should intensify efforts to reduce or stop the spread of selling and purchasing of the drug substances through government policies among the students in the tertiary institutions in Nigeria.
Human Immunodeficiency Virus (HIV) Drug Resistance: A Global Narrative Review
Authors: Phiri Maureen Nkandu , Mudenda Steward
Published: November 2021

Background: Antiretroviral Therapy (ART) has significantly improved Human Immunodeficiency Virus (HIV) patients’ survival rates. However, the emergence of HIV Drug Resistance (HIVDR) has markedly reduced the effectiveness of Antiretroviral Therapy (ART). Aim: This narrative review was conducted to review published studies on HIV drug resistance and its consequences. Materials and methods: A literature search for this narrative review was carried out and the following databases were used PubMed, Google Scholar, and The Lancet. The cited articles were published from 1999 to 2021. The keywords used in the search of literature included ‘Antiretroviral therapy’, ‘resistance’, and ‘Human Immunodeficiency Virus drug resistance’, ‘HIV’, ‘HIV drug resistance’, ‘HIV vaccines’, and the Boolean word ‘AND’. Results: There is a high prevalence of HIV drug resistance globally that has been associated with some factors such as older age, non-adherence to treatment, long treatment duration, lower cell count and high viral load. HIV drug resistance may lead to treatment failure, prolongation of the time required to achieve viral suppression and leads to increased mortality. Increasing access to viral load monitoring can help mitigate HIV drug resistance. Conclusion: HIV drug resistance is a global threat to public health and has been associated with increased morbidity and mortality. Therefore, there is a need for more research to be carried out and various strategies like the use of antiretrovirals with a high genetic barrier to resistance need to be put in place to prevent further spread resistance. HIVDR must be monitored frequently taking into consideration the geographic variability. There is an urgent need for the development of anti-HIV vaccines that will help to prevent further transmission and spread of HIV.
A Review on the Effects of Heavy Metals on Aquatic Animals
Authors: Vajargah Mohammad Forouhar
Published: November 2021

The development of industries and the uncontrolled increase of population, the development of agricultural areas and the use of fertilizers and pesticides have caused industrial and municipal wastewaters as well as agricultural effluents with heavy metals to enter water ecosystems. After entering aquatic ecosystems, heavy metals accumulate in aquatic tissues and eventually enter the food chain. Research on heavy metal pollution in aquatic ecosystems is important from a public health perspective, maintaining the balance of those ecosystems and preventing biodegradation due to the adverse effects of pollutants. So, researchers have focused on determining the level of pollution of various water sources, how metals are absorbed by aquatic animals, bioaccumulation of heavy metals in various aquatic tissues and the possibility of using aquatic animals as biological indicators based on pollutant monitoring. Due to the importance of this issue, the present study has investigated the effect of heavy metals on fish.
SÍNDROME DA PESSOA RÍGIDA (STIFF-PERSON SYNDROME) E FATORES PREJUDICIAIS A ATIVIDADE MOTORA: RELATO DE UMA BAILARINA CLASSICA
Authors: Hartmann Cassio , César Dias Lopes Gabriel , Da Silva Ferreira Vieira Fábio , V Samuel Bensson , Antunes Rocha Hartmann Sandra
Published: November 2021

Procuramos descrever que uma síndrome pouco conhecida, por profissionais da área da saúde, afeta e prejudica a atividade motora. O presente trabalho tem como objetivo relatar os fatores prejudiciais da atividade motora de uma bailarina clássica,  acometida pela Síndrome da Pessoa Rígida como é conhecido na sua tradução em português e inglês como está entre parênteses (Stiff-Person Syndrome). Pode-se concluir que por ser autoimune rara, e sendo descrita há sessenta e quatro (64) anos, não existeestudos que venham contribuir axiologicamente e preencher uma vacuidade e lacuna, sobre a melhora da atividade motora e dos efeitos da pratica de atividades e exercícios físicos, sendo que a síndrome estudada além de afetar todos os segmentos motores,atinge também órgãos respiratórios como traqueia e laringe, dificultando o transporte de oxigênio até os pulmões, comprometendo a função do coração e provocando espasmos e engasgos durante a deglutição, necessitando de novas pesquisas dissertando sobre essa síndrome e das ações de intervenção dos profissionais de diversas áreas da saúde que irá contribuir axiologicamente para o referente estudo, gerando conhecimento epistemológico e prescrição de atividades e exercícios físicos.
Hospital and mid-term results of simultaneous correction of coronary and carotid arteries
Authors: Marchenko A. V. , Vronskiy A. S. , Myalyuk P. A. , Lazarkov P. V. , Sinelnikov Yu. S.
Published: November 2021

Study objective: to present the immediate and mid-term results of onestage surgical treatment of patients in the volume of CEE and CABG based on a differentiated approach to patient selection.Materials and methods: in FCCVS n.a. S.G. Suhanov, Perm developed an algorithm for choosing treatment tactics in patients with combined atherosclerotic lesions of the coronary and brachiocephalic arteries. According to this algorithm, for the period from 01.07.2014-01.01.2021, one-stage correction of CABG + CEE was performed in 104 patients. The primary endpoints were all-cause death, acute myocardial infarction (MI), transient ischemic attack (TIA), and stroke. Hospital and midterm results were analyzed. The average follow-up time in the study of mid-long-term results was 40.3 ± 20.4 months.Results: in the study of hospital outcomes, the mortality rate was 0%. There were recorded 3 (2.9%) cases of perioperative stroke and 1 (0.9%) case of myocardial infarction. There were no cases of TIA. The combined endpoint (death, acute MI, stroke, TIA) reached 4 (3.8%) patients. In the study of mid-term results, we were able to contact 96 patients out of 104 operated on (92.3%). The survival rate was 94.8%. 5 (5.2%) people died. There were 2 (2.1%) cases of myocardial infarction, 4 (4.1%) cases of stroke.Conclusions: simultaneous revascularization of the carotid and coronary regions of CABG + CEE is safe and allows adequate elimination of the lesion in both regions.
Testing the relationship between out-of-class student engagement and student learning outcomes: the case of business students in Vietnam
Authors: Trinh Thi Thu Giang
Published: November 2021

The topic of student engagement has emerged by the end of the last century and has become an interesting research topic for its robust correlation with a large number of desirable and positive educational outcomes. While in-class student engagement has been largely studied, out-of-class student engagement seems to receive less attention. This study closes the gap in the literature by presenting evidence on the relationship between out-of-class engagement and student learning outcomes using two different datasets of 492 and 491 business students in Hanoi, the capital city of Vietnam. The structural equation modeling analyses using SmartPLS show significant effects of cognitive and agentic engagement on student learning outcomes. In addition, out-of-class agentic engagement is confirmed to be a separate and distinct subcomponent of student engagement.
AN EXISTENCE RESULT FOR QUASILINEAR PARABOLIC SYSTEMS WITH LOWER ORDER TERMS
Authors: Balaadich Farah , Azroul Elhoussine
Published: November 2021

In this paper we prove the existence of weak solutions for a class of quasilinear parabolic systems, which correspond to diffusion problems, in the form where Ω is a bounded open domain of be given and The function v belongs to is in a moving and dissolving substance, the dissolution is described by f and the motion by g. We prove the existence result by using Galerkin’s approximation and the theory of Young measures.
A Sample of Massive Black Holes in Dwarf Galaxies Detected via [Fe x] Coronal Line Emission: Active Galactic Nuclei and/or Tidal Disruption Events
Authors: Molina Mallory , Reines Amy E. , Latimer Lilikoi , Baldassare Vivienne , Salehirad Sheyda
Published: November 2021

The massive black hole (BH) population in dwarf galaxies (M
BH ≲ 105
M
⊙) can provide strong constraints on the origin of BH seeds. However, traditional optical searches for active galactic nuclei (AGNs) only reliably detect high-accretion, relatively high-mass BHs in dwarf galaxies with low amounts of star formation, leaving a large portion of the overall BH population in dwarf galaxies relatively unexplored. Here, we present a sample of 81 dwarf galaxies (M
⋆ ≤ 3 × 109
M
⊙) with detectable [Fe x]λ6374 coronal line emission indicative of accretion onto massive BHs, only two of which were previously identified as optical AGNs. We analyze optical spectroscopy from the Sloan Digital Sky Survey and find [Fe x]λ6374 luminosities in the range L
[Fe x] ≈ 1036–1039 erg s−1, with a median value of 1.6 × 1038 erg s−1. The [Fe x]
λ6374 luminosities are generally much too high to be produced by stellar sources, including luminous Type IIn supernovae (SNe). Moreover, based on known SNe rates, we expect at most eight Type IIn SNe in our sample. That said, the [Fe x]λ6374 luminosities are consistent with accretion onto massive BHs from AGNs or tidal disruption events (TDEs). We find additional indicators of BH accretion in some cases using other emission line diagnostics, optical variability, and X-ray and radio emission (or some combination of these). However, many of the galaxies in our sample only have evidence for a massive BH based on their [Fe x]λ6374 luminosities. This work highlights the power of coronal line emission to find BHs in dwarf galaxies missed by other selection techniques and to probe the BH population in bluer, lower-mass dwarf galaxies.
Using a Neural Network Classifier to Select Galaxies with the Most Accurate Photometric Redshifts
Authors: Broussard Adam , Gawiser Eric
Published: November 2021

The Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST) will produce several billion photometric redshifts (photo-z's), enabling cosmological analyses to select a subset of galaxies with the most accurate photo-z. We perform initial redshift fits on Subaru Strategic Program galaxies with deep grizy photometry using Trees for Photo-Z (TPZ) before applying a custom neural network classifier (NNC) tuned to select galaxies with (z
phot − z
spec)/(1 + z
spec) < 0.10. We consider four cases of training and test sets ranging from an idealized case to using data augmentation to increase the representation of dim galaxies in the training set. Selections made using the NNC yield significant further improvements in outlier fraction and photo-z scatter (σ

z
) over those made with typical photo-z uncertainties. As an example, when selecting the best third of the galaxy sample, the NNC achieves a 35% improvement in outlier rate and a 23% improvement in σ

z
compared to using uncertainties from TPZ. For cosmology and galaxy evolution studies, this method can be tuned to retain a particular sample size or to achieve a desired photo-z accuracy; our results show that it is possible to retain more than a third of an LSST-like galaxy sample while reducing σ

z
by a factor of 2 compared to the full sample, with one-fifth as many photo-z outliers. For surveys like LSST that are not limited by shot noise, this method enables a larger number of tomographic redshift bins and hence a significant increase in the total signal to noise of galaxy angular power spectra.
Synchronized Coevolution between Supermassive Black Holes and Galaxies over the Last Seven Billion Years as Revealed by Hyper Suprime-Cam
Authors: Li Junyao , Silverman John D. , Ding Xuheng , Strauss Michael A. , Goulding Andy , Schramm Malte , Yesuf Hassen M. , Sun Mouyuan , Xue Yongquan , Birrer Simon , Shi Jingjing , Toba Yoshiki , Nagao Tohru , Imanishi Masatoshi
Published: November 2021

We measure the evolution of the



BH

–



⋆

relation using 584 uniformly selected Sloan Digital Sky Survey quasars at 0.2 < z < 0.8. The black hole masses (



BH

) are derived from the single-epoch virial mass estimator using the Hβ emission line and span the range

7.0
<
log



BH

/

M

⊙

<
9.5

. The host-galaxy stellar masses (



⋆

), which cover the interval

10.0
<
log



⋆

/

M

⊙

<
11.5

, are determined by performing two-dimensional quasar-host decomposition of the Hyper Suprime-Cam images and spectral energy distribution fitting. To quantify sample selection biases and measurement uncertainties on the mass terms, a mock quasar sample is constructed to jointly constrain the redshift evolution of the



BH

–



⋆

relation and its intrinsic scatter (σ

μ
) through forward modeling. We find that the level of evolution is degenerate with σ

μ
, such that both a positive mild evolution (i.e.,



BH

/



⋆

increases with redshift) with a small σ

μ
and a negative mild evolution with a larger σ

μ
are consistent with our data. The posterior distribution of σ

μ
enables us to put a strong constraint on the intrinsic scatter of the



BH

–



⋆

relation, which has a best inference of

0.25

−
0.04

+
0.03

dex, consistent with the local value. The redshift evolution of the



BH

–



⋆

relation relative to the local relation is constrained to be

1
+
z

0.12

−
0.27

+
0.28

, in agreement with no significant evolution since z ∼ 0.8. The tight and unevolving



BH

–



⋆

relation is suggestive of a coupling through active galactic nuclei feedback or/and a common gas supply at work, thus restricting the mass ratio of galaxies and their black holes to a limited range. Given the considerable stellar disk component, the



BH

–



bulge

relation may evolve as previously seen at higher redshifts.
Nevus Lipomatosus Cutaneous Superficialis with a Histopathological Appearance Resembling Sclerotic Fibroma: A Rare Case Report
Authors: Ruray Rizka Ramadhani , Djawad Khairuddin , Nurdin Airin
Published: November 2021

Background: Nevus lipomatosus cutaneous superficialis (NLCS) of Hoffmann–Zurhelle is a benign idiopathic hamartoma. There are two types of NLCS, multiple and solitary. They are found in the abdomen, lower back, buttocks, hips, upper posterior thighs, and pelvis. The diagnosis can be evaluated with a typical histopathological of mature fat cells in the dermis, with 10%–50% of the dermis. Case Report: We reported a case of NLCS with clinical papules and multiple nodules on the buttocks since the age of 6 years with a history of lipoma removal. The dermoscopic examination was conducted to confirm the diagnosis. The histopathological examination showed a dominant sclerotic fibroma with two sessions of biopsy and a few mature fats on the dermis after deeper cuts paraffin block. Cryotherapy with an open spray method is treatment of choice in this patient. Discussion: The appearance of the dermis in NLCS can be normal or an increase in collagen. Interestingly, collagen has sclerosis partially and resembles sclerotic fibroma never been reported. NLCS increases the amount of collagen; however, collagen as sclerosis remains obscure. The features of NLCS histopathological with other morphological abnormalities in the dermis have been reported, such as NLCS with perifollicular fibroma (PF) features. The sclerotic fibroma features are other morphological abnormalities in NLCS, as reported in the PF.
Diagnostic Value of Acyl-Ghrelin in Type 2 Diabetic Patients with Non-alcoholic Fatty Liver Disease
Authors: Elabd Elham Youssef , El-Beik Diaa El-Din Mohammad Soliman , Bayoumy Essam Mohammed , Saleh Moguib , Ezzat Wafaa M. , Siddik Reham Ibrahim , Mohamed Azza Emam , Sayed Motaz Mohammed , Ali Mohamed Ossama
Published: November 2021

BACKGROUND: Nonalcoholic fatty liver disease (NAFLD) has become the leading cause of chronic liver disease worldwide. Type 2 diabetes (T2D) is described as one of the most significant risk factor for developing NAFLD, non-alcoholic steatohepatitis, and advanced cirrhosis. Liver biopsy cannot be used routinely to diagnose NAFLD. Therefore, it is critically urgent to develop a simple non-invasive test.

AIM: This study examined fasting Acyl-Ghrelin (AG) as a non-invasive biomarker to accurately diagnose NAFLD in diabetic patients.

PATIENTS AND METHODS: Sixty-one patients with T2D were divided into a test group with NAFLD, and a control group without NAFLD. Secondary causes of fatty liver, chronic viral hepatitis, and drug-induced liver damage were excluded from the study. Anthropometric measurements, lipid profile, fasting blood sugar (FBS), liver enzyme activities, and fasting AG levels were collected. Data management and analysis were performed using statistical package for social sciences version 20.

RESULTS: Fasting AG level (pg/ml) in the test group (56.1 ± 10.7) was increased, but not statically significant compared with the control group (37.8 ± 9.3), p > 0.05. However, significant metabolic changes were observed in body weight, waist circumference, FBS, alanine transaminase, and aspartate transaminase between test and control groups. The mean values in the test group are 93.2 ± 14.5, 115.4 ± 7.6, 144.2 ± 25.9, 21.1 ± 5.7, and 32.3 ± 2.1. While the mean values are 87.7 ± 7.3, 95 ± 3.8, 123.7 ± 20.7, 18.6 ± 5, and 20 ± 7, respectively, in the control group.

CONCLUSIONS: While elevated AG levels alone were not significant, elevated AG levels plus other parameters of liver damage and obesity were associated with the diagnosis of NAFLD. However, more studies are needed to consider elevated AG as a diagnostic marker in NAFLD patients with T2D.
« Quand commencent les comptes, ou la remise en cause du don »
Authors: Préchoux Véronique , Grevin Anouk
Published: November 2021

De nombreuses organisations s’engagent dans le courant des entreprises libérées, misant sur la capacité des salariés à s’auto-motiver et à s’organiser eux-mêmes dans leur travail, ce qui implique de leur part un fort engagement. Étonnamment, la littérature sur le sujet interroge très peu les conditions de cet engagement et sa reconnaissance. L’article rapporte une recherche-intervention réalisée au sein d’une entreprise libérée, confrontée à une profonde crise d’engagement de ses salariés et de reconnaissance. Il propose de sortir de l’approche de la reconnaissance traditionnelle en GRH qui mobilise généralement la notion de calcul entre contribution et rétribution, et d’envisager la logique du don, où l’enjeu est alors de reconnaître ce qui est donné dans le travail, sans exclure pour autant une part de calcul. L’étude empirique permet ainsi d’identifier deux logiques dominantes, celle du don et celle du calcul, présentes simultanément sur le terrain, et ce que chacune d’elles produit. Une lecture par le don montre que les salariés basculent dans la logique du calcul et du contrat dès lors qu’ils ne trouvent plus leur compte dans l’entreprise, signalant une rupture de la dynamique du don. L’article pointe l’enjeu de la reconnaissance pour alimenter l’équilibre fragile de la dynamique du don et de l’engagement.
La financiarisation de la dette des collectivités locales comme solution à la pénurie financière : genèse de l’Agence France Locale
Authors: Ferlazzo Edoardo
Published: November 2021

Cet article revient sur la genèse de l’Agence France locale, première agence française de financement des collectivités locales, ayant comme particularité de se financer exclusivement sur les marchés obligataires pour produire du crédit. Il met en évidence que la financiarisation induite par cette agence est finalement institutionnalisée en raison d’arbitrages financiers d’un État souhaitant substituer à une ressource publique une ressource privée pour financer l’action publique locale et respecter sa propre contrainte budgétaire.
La gouvernance urbaine « les pieds dans l’eau »
Authors: Boughedada Thibault
Published: November 2021

Cette contribution analyse les interactions entre les politiques d’aménagement du foncier sur la commune de Cotonou (Bénin) – particulièrement les opérations dites de lotissement et de remembrement –, et l’exposition importante de celle-ci aux contraintes environnementales, en particulier les inondations. Adossé à un travail de terrain qui recouvre plusieurs quartiers vulnérables de la ville, à des entretiens qualitatifs avec toute une chaine d’acteurs intervenants à différentes échelles, des cabinets de géomètres et urbanistes aux différents services municipaux et ministériels liés aux politiques foncières et d’aménagement, ce travail montre que ces politiques renforcent plutôt qu’elles n’atténuent la vulnérabilité de la ville et de ses habitants face aux risques environnementaux.
Les stratégies open-sources selon le paradigme des modèles économiques
Authors: Jullien Nicolas , Viseur Robert
Published: November 2021

De nombreuses entreprises utilisent des logiciels libres dans leurs propositions commerciales. Il existe de nombreuses études de cas sur leur modèle d’affaires. Cependant, il manque une analyse globale synthétisant et structurant les différents modèles open-sources. En nous appuyant sur le cadre des modèles économiques et la littérature en systèmes d’information, nous partons des besoins en offres libres pour caractériser et comparer des modèles économiques open-sources. Cela nous permet de discuter le lien entre captation de valeur et ressources clefs. Le modèle de l’open-source apparaît basé sur la gestion et le contrôle de la dynamique d’évolution des logiciels (« logiciel flux »), dans une industrie qui s’était habituée à vendre des produits (« logiciel stock »).
Determinants of profitability of black soldier fly farming enterprise in Kenya
Authors: Mutuku K.V. , Mukhebi A.W. , Orinda M.A. , Tanga C.M.
Published: November 2021

Black soldier fly (BSF) farming is emerging as a new farm enterprise in Kenya poised to provide high-quality and affordable alternative protein sources for animal feed production. Consequently, commercialisation and adoption require farmers to understand if the enterprise is economically viable. This study sought to assess the determinants of profitability of the BSF farm enterprise. A census survey was conducted whereby 34 well-established smallholder BSF farmers were interviewed. A double log regression analysis on the determinants of profitability of the BSF farm enterprise was done. The results revealed that 93.6% of the variation in enterprise gross margin was explained by the independent variables. Feed and household size contributed positively and significantly to the enterprise gross margin. Labour was significantly and negatively correlated to the enterprise gross margin. Farm size, gender, level of education, and age of the farmer did not significantly influence the gross margin of the enterprise. Furthermore, the survey showed that a 1% increase in man-hours spent in the BSF farming enterprise would result in a 0.34% reduction in the gross margin while a 1% increase in the usage of the rearing substrate would lead to a 1.38% increase in the gross margin. There is a need for farmers to reduce the man-hours spent in the BSF farms but at the same time increase significantly the utilisation of more rearing substrate to improve their profitability. However, a long-term socio-economic impact assessment on the BSF farming enterprise would be valuable to attract investors and interest in the insect production sector for animal feed.
Does carbon asset add value to clean energy market? Evidence from EU
Authors: Kanwal Memoona ,   Department of Management Sciences, COMSATS University Islamabad, Park Road, Islamabad, Pakistan, Khan Hashim
Published: November 2021

This paper examines if clean energy stocks help investors in managing carbon risk. We use the price of the European Union Allowance (EUA) and European clean energy index (ERIX) for the three phases of the EU-Emission Trading Scheme. Analyzing the time-varying correlation and volatility of EUA stock and ERIX through generalized orthogonal GO-GARCH model, the empirical results reveal relative independence of the European renewable energy market from the carbon market providing diversification benefits and value addition by including carbon assets in clean energy stock portfolio. Furthermore, three portfolios with different weight allocation strategies reveal that the carbon asset provides risk and downside risk benefits when mixed with a clean energy stock portfolio. These results are useful for investors who enter the market for value maximization and the regulators striving to make strategies for managing carbon risk.
Effect of dual-convolutional neural network model fusion for Aluminum profile surface defects classification and recognition
Authors: Liu Xiaochen ,   School of Mechanical Engineering, Dalian Jiaotong University, Dalian 116028, China, He Weidong , Zhang Yinghui , Yao Shixuan , Cui Ze ,   School of Software Engineering, Dalian University of Foreign Languages, Dalian 116044, China,   School of Control Science and Engineering, Dalian University of Technology, Dalian 116024, China
Published: November 2021

Classifying and identifying surface defects is essential during the production and use of aluminum profiles. Recently, the dual-convolutional neural network(CNN) model fusion framework has shown promising performance for defects classification and recognition. Spurred by this trend, this paper proposes an improved dual-CNN model fusion framework to classify and identify defects in aluminum profiles. Compared with traditional dual-CNN model fusion frameworks, the proposed architecture involves an improved fusion layer, fusion strategy, and classifier block. Specifically, the suggested method extracts the feature map of the aluminum profile RGB image from the pre-trained VGG16 model's pool5 layer and the feature map of the maximum pooling layer of the suggested A4 network, which is added after the Alexnet model. then, weighted bilinear interpolation unsamples the feature maps extracted from the maximum pooling layer of the A4 part. The network layer and upsampling schemes ensure equal feature map dimensions ensuring feature map merging utilizing an improved wavelet transform. Finally, global average pooling is employed in the classifier block instead of dense layers to reduce the model's parameters and avoid overfitting. The fused feature map is then input into the classifier block for classification. The experimental setup involves data augmentation and transfer learning to prevent overfitting due to the small-sized data sets exploited, while the K cross-validation method is employed to evaluate the model's performance during the training process. The experimental results demonstrate that the proposed dual-CNN model fusion framework attains a classification accuracy higher than current techniques, and specifically 4.3% higher than Alexnet, 2.5% for VGG16, 2.9% for Inception v3, 2.2% for VGG19, 3.6% for Resnet50, 3% for Resnet101, and 0.7% and 1.2% than the conventional dual-CNN fusion framework 1 and 2, respectively, proving the effectiveness of the proposed strategy.
Seasonal effects of the fatty acid composition of phospholipid and triacylglycerol in the muscle and liver of male Salmo trutta macrostigma
Authors: Kaçar S. , Kaya H. , Başhan M.
Published: November 2021

The seasonal effects on the fatty acid composition of triacylglycerol (TAG) and phospholipid (PL) in the muscle and liver of male Salmo trutta macrostigma were determined using the gas chromatographic (GC) method. The fatty acid (FA) compositions of total lipid, PL and TAG fractions were determined in muscle and liver tissues of S. trutta macrostigma. The phospholipids contained a higher proportion of 16:0 compared to the TAG in the muscle tissue of S. trutta macrostigma. Docosahexaenoic acid (22:6 ω-3) and eicosapentaenoic acid (20:5 ω-3) contents were high in both muscle and liver tissues. The total lipid contents in the muscle and liver were 1.07-2.45 and 3.00-4.64%, respectively. S. trutta macrostigma is a rich source of ω-3 and ω-6, polyunsaturated fatty acids (PUFA) with numerous benefits to human health.