bluuebunny/crossref_metadata_2025_split huggingface dataset:
МЕТОДИЧЕСКИЕ ОСНОВЫ ОЦЕНКИ ЭФФЕКТИВНОСТИ СОЛНЕЧНЫХ ТЕПЛОВЫХ УСТАНОВОК
Authors: Дибиров Магомед Гаджимагомедович , Амадзиева Наида Абдуллаевна , Дибирова Маржанат Магомедовна 
Published: October 2018

Целью данной работы является разработка основ методики оценки эффективности солнечной тепловой установки. Методология проведения работы. Исследование основывается на общенаучной методологии, которая предусматривает применение системного подхода к решению рассматриваемой проблемы. Результаты. В статье представлена методика оценки эффективности солнечных тепловых установок, которые используются для отопления и горячего водоснабжения жилищно-коммунальных, сельскохозяйственных и промышленных зданий и сооружений, расположенных в благоприятных климатических условиях. Наиболее благоприятными для использования солнечной энергии регионами России является Северо-Кавказский федеральный округ. Годовое поступление солнечной энергии на горизонтальную поверхность в этих регионах колеблется от 1280 до 1870 кВт*ч на 1 кв. м в год, а продолжительность солнечного излучения составляет от 2000 до 3000 часов в год. Выполнен расчет эффективности солнечной установки для горячего водоснабжения и частичного отопления жилого дома, в которых использованы разработанные нами солнечные коллекторы. Благодаря широкому использованию полимерных материалов при изготовлении коллекторов и простой технологии изготовления, их стоимость не превышает 5000 руб./кв. м). Капитальные затраты на солнечные установки не превышают 9000 рублей на 1 кв. м, включая стоимость тепловых аккумуляторов, вспомогательного оборудования, монтажных и пуско-наладочных работ. Ежегодные эксплуатационные затраты практически отсутствуют. Поэтому срок окупаемости таких установок не превышает 3 года, а коэффициент замещения – не менее 40 %. Солнечные тепловые установки являются конкурентоспособными и могут обеспечить положительные экономические, социальные и экологические эффекты. Область применения. Проектирование и создание солнечных энергетических установок, комбинированных систем с солнечными тепловыми коллекторами, тепловыми насосами, тепловыми аккумуляторами, простых водонагревательных установок, предназначенных для горячего водоснабжения отопления жилых домов или других потребителей тепловой низкопотенциальной энергии. Развитие этих технологий необходимо для постепенного перехода к домам с полным теплообеспечением за счет возобновляемой солнечной энергии. Выводы. Расчеты экономической эффективности и результаты испытаний солнечных установок в Дагестане определили их высокую энергетическую и экономическую эффективность.
Malmquist Data Envelopment Analysis as a tool to evaluate the Productivity levels of Container Ports in Developing Countries located in East and Southern Africa.
Authors: OSUNDIRAN Adeola Oluwatoyin , OKONTA Felix 
Published: October 2018

Aim: The purpose of this paper is to examine the productivity of 12 container ports located in East and Southern African developing nations for the period of 2014-2016. Furthermore, to investigate the sources of productivity change over the time period. Design / Research methods: This research collects data on the 12 container ports. The productivity of these ports is analyzed using the Data Envelopment Analysis based Malmquist productivity index. This is decomposed into technological changes and technical efficiency. The sources of productivity change are identified.Conclusions /findings: The major finding of this study is the trend in the port efficiency level over the three year period of analysis. Therefore assisting maritime policymakers and port authorities on what aspect of the port production need enhancement. Originality/value of the article: Evaluation of ports in developing nations in Africa is not common. Also, the year under examination is less than five years. Therefore the result is relevant to port authorities as well as to the African nations.Implications of the research: 90% of import and exports into developing African nations are done by sea. The implication of this is that an efficient or inefficient port will have a multiplier effect on the nation’s economy. Great improvement in port productivity will enhance economic growth and development.Limitations of the research: Port efficiency should be evaluated on a yearly basis to serve as a major determinant of port productivity. However, this evaluation is based on availability of data.
Benchmarking technical efficiency of rice farms in Ghana: An empirical application of alternative production frontier approaches
Authors: COFFIE Rebecca Owusu 
Published: October 2018

Abstract Aim: In spite of investments in new technologies to improve upon rice production in Ghana, productivity levels are still low. It is therefore important to assess the efficiency of farmers and identify sources of inefficiency to develop policies to reduce inefficiencies. This paper aims to investigate the extent and drivers of technical efficiency of rice farmers in Ghana.Design/Research methods: Bias-corrected data envelopment and restricted single-stage stochastic frontier models are employed to examine the technical efficiency of farmers and its determinants. The data for empirical application come from a farm production survey comprising a total sample of 197 rice farmers from Ghana.Conclusions and findings: The analyses revealed on average, farmers are about 65% technically efficient. This result indicates that there is a potential to improve upon technical efficiency of farmers by about 35% within the existing state of resources and technology. Furthermore, the drivers of technical efficiency were identified as food insecurity status and membership of farmer based organisation. Specifically, the results show an inverse relationship between food insecurity status and technical efficiency; where higher levels of food insecurity are associated with lower levels of technical efficiency. Also, membership of farmer based organisation increases technical efficiency of farmers. Contrary to previous studies, non-farm income and credit access were not identified as significant drivers of technical efficiency among the sampled farmers. On the basis of the findings, policies should aim at reducing food insecurity among farmers and encouraging membership of farmer based organisations.Originality/value of the article: This paper provides evidence-based information on the extent of technical efficiency of rice farmers in Ghana and suggests measures for technical efficiency improvements.
(Con)viviendo con malaria: salud, enfermedad y autoatención en una comunidad rural en la Amazonia brasileña
Authors: Nogueira Dassuem , Garnelo Luiza 
Published: October 2018

En el artículo se analiza el sistema de autoatención a la malaria en una localidad rural de la Amazonia brasileña. Se explora la atribución de significados a esta enfermedad, sus causas, sintomatología, tratamientos, prevención y consecuencias para la salud y la capacidad laboral. Se describen estrategias para lidiar con portadores de malaria interna —cuando la persona padece malaria, pero los síntomas son poco evidentes y no se establece el papel social de enfermo—. A partir de casos socialmente definidos como malaria y malaria interna se instituye el manejo de relaciones intracomunitarias de poder que pretenden garantizar recursos provenientes de políticas sanitarias y de la ayuda social a la población considerada en riesgo de enfermarse.
Derecho agrario, herencia y tierra en ejidos del Noroeste de México: un análisis sociocultural con perspectiva de género
Authors: Lagunas Vázques Magdalena , Beltrán Morales Luis Felipe , Ortega Rubio Alfredo 
Published: October 2018

Mediante una caracterización, en términos socioculturales, de las mujeres ejidatarias en cuatro ejidos de Baja California Sur, se estudian sus procesos de acceso a la tierra y el derecho agrario, los principales patrones de herencia y las desigualdades de género en su entorno rural ejidal. Se utilizan entrevistas semiestructuradas, a profundidad y diario de campo con perspectiva de género. El porcentaje de mujeres con derechos agrarios es mínimo y 90% los adquirió por herencia. Más de la mitad considera que existe discriminación hacia las mujeres. Los patrones culturales de acceso a la tierra, las costumbres sobre la herencia, y en general, el papel de la mujer campesina en la sociedad propician la situación de desigualdad de género que prevalece en el campo.
Crowd Simulation Pada Formasi Pasukan Kapal Laut Berbasis 3 Dimensi
Authors: Atthariq Atthariq 
Published: October 2018

Abstrak - Simulasi Kerumunan telah dikembangkan dalam berbagai produk komersial game, system peperangan, evakuasi kerumunan, film dan animasi. Dalam dunia peperangan simulasi juga sangat dibutuhkan untuk mempresentasikan perilaku dari sistem nyatan pada pasukan , seperti halnya pada pasukan kapal dalam membentuk formasi , maka Crowd Simulation pada Formasi Pasukan Kapal Laut berbasis 3 Dimensi ini bertujuan mensimulasikan Pasukan Kapal Laut yang membentuk formasi menuju target yang ditentukan menggunakan metode Steering Behavior Path Following . Path Following dipilih karena perilaku menyetir kapal laut memberi gambaran mengenai pergerakan yang statis menuju target formasi yang ditentukan . Setelah melakukan pengujian diketahui formasi kapal laut menuju target yang ditentukan dengan tepat.Kata kunci : Crowd Simulation , 3 Dimensi , Formasi, Steering Behavior.
Analisa Sistem Informasi untuk Proses Permintaan Data pada Universitas XYZ
Authors: Suryawan Angellia Debora , Veronica Veronica 
Published: October 2018

Data is very important component in the organization and should be managed properly. Information with accurate, precise, and reliable data be beneficial for the organization for decision making. XYZ University realize that the data management is very important process. The needs of data must be supported properly and quickly, so that the required data can be accessed anytime and anywhere. In this study discusses the process of providing data according to user demand. The method in this paper is identification, define the problem, and data collection. XYZ University already has applications to support data requests, but not all data requests can be fulfilled in the system. There is still a process of data requests made through emails. Overall, the application for data requests very helpful for database and system admin staff, so the routine data requests through emails can be reduced. The application has also features for monitoring data requests from units, so the Manager can monitor the process of the data request and find out any unit that doing frequent data requests each month. But, the application also required for tracking data requests, so user can monitor status of data requests, who’s working on, and estimation time for processing data requests.
Index Terms - data, data request, database, information system.
Pengembangan Sistem Informasi Public E-Marketplace pada PT XYZ
Authors: Sulaiman Agus 
Published: October 2018

In this modern era, internet technology and information system are very crucial in helping people or companies running their business. The latest technology allows people to buy and sell online using an electronic system that is known as e-commerce. Admittedly, many people still feel insecure when doing transactions in cyberspace due to the fact that fraud often occurs between buyers and sellers.
To overcome this downside, this study aims to develop an online application that will provide a secure environment for sellers and buyers to transact named public e-marketplace. This system has several features. First, features for seller: registration functionality, login functionality, products management, transactions management, profile management. Second, features for buyer: registration functionality, login functionality, searching functionality for suppliers and products, transaction management, payment confirmation, Profile management. Third, features for admin: ability to view the status of the account, ability to update the account activation, payment verification, delivery verification, refund verification. For the security of the system used HTTPS on a page and form URL, SSL or TLS, Captcha secure word and password encryption. This application will be developed with ASP.NET technology, using SQL Server to store its database and Internet Information Service (IIS) as its web server.
Index Terms - e-marketplace, information system, security.
The 2.4 μm Galaxy Luminosity Function as Measured Using WISE. III. Measurement Results
Authors: Lake S. E. , Wright E. L. , Assef R. J. , Jarrett T. H. , Petty S. , Stanford S. A. , Stern D. , Tsai C.-W. 
Published: October 2018

Abstract
The Widefield Infrared Survey Explorer (WISE) satellite surveyed the entire sky multiple times in four infrared wavelengths (3.4, 4.6, 12, and 22 μm). The unprecedented combination of coverage area and depth gives us the opportunity to measure the luminosity function (LF) of galaxies, one of the fundamental quantities in the study of them, at 2.4 μm to an unparalleled level of formal statistical accuracy in the near-infrared. The big advantage of measuring LFs at wavelengths in the window of ≈2–3.5 μm is that it correlates more closely to the total stellar mass in galaxies than others. In this paper we report on the parameters of the 2.4 μm LF of galaxies obtained from applying the spectro-luminosity-functional-based methods to datasets from the previous papers in this series using the mean and covariance of 2.4 μm normalized spectral energy distributions (SEDs) from our previous work. In terms of the single Schechter function parameters evaluated at the present epoch, the combined result is:

,

(M
⋆ = −21.67 ± [0.02stat, 0.05sys] AB mag), and α = −1.050 ± [0.004stat, 0.04sys]. The high statistical accuracy comes from combining public redshift surveys with the wide coverage from WISE, and the unevenness in statistical accuracy is a result of our efforts to work around biases of uncertain origin that affect resolved and marginally resolved galaxies. With further refinements, the techniques applied in this work promise to advance the study of the SED of the universe.
A Cool Core Disturbed: Observational Evidence for the Coexistence of Subsonic Sloshing Gas and Stripped Shock-heated Gas around the Core of RX J1347.5–1145
Authors: Ueda Shutaro , Kitayama Tetsu , Oguri Masamune , Komatsu Eiichiro , Akahori Takuya , Iono Daisuke , Izumi Takumi , Kawabe Ryohei , Kohno Kotaro , Matsuo Hiroshi , Ota Naomi , Suto Yasushi , Takakuwa Shigehisa , Takizawa Motokazu , Tsutsumi Takahiro , Yoshikawa Kohji 
Published: October 2018

Abstract
RX J1347.5–1145 (z = 0.451) is one of the most luminous X-ray galaxy clusters; it hosts a prominent cool core and exhibits a signature of a major merger. We present the first direct observational evidence for the subsonic nature of the sloshing motion of the cool core. We find that a residual X-ray image from the Chandra X-ray Observatory after removing the global emission shows a clear dipolar pattern characteristic of gas sloshing, whereas we find no significant residual in the Sunyaev–Zel’dovich effect (SZE) image from the Atacama Large Millimeter/submillimeter Array (ALMA). We estimate the equation of state of perturbations in the gas from the X-ray and SZE residual images. The inferred velocity is

km s−1, which is much lower than the adiabatic sound speed of the intracluster medium in the core. We thus conclude that the perturbation is nearly isobaric, and the gas sloshing motion is consistent with being in pressure equilibrium. Next, we report evidence for gas stripping of an infalling subcluster, which likely shock-heats the gas to a temperature well in excess of 20 keV. Using the mass distribution inferred from strong lensing images of the Hubble Space Telescope (HST), we find that the mass peak is located away from the peak position of the stripped gas with a statistical significance of >5σ. Unlike for the gas sloshing, the velocity inferred from the equation of state of the excess hot gas is comparable to the adiabatic sound speed expected for the 20 keV intracluster medium. All of the results support that the southeast substructure is created by a merger. On the other hand, the positional offset between the mass and the gas limits the self-interaction cross section of dark matter to be less than 3.7 h
−1 cm2 g−1 (95% CL).
Modeling of Absorption by Heavy Minor Species for the Hot Jupiter HD 209458b
Authors: Shaikhislamov I. F. , Khodachenko M. L. , Lammer H. , Fossati L. , Dwivedi N. , Güdel M. , Kislyakova K. G. , Johnstone C. P. , Berezutsky A. G. , Miroshnichenko I. B. , Posukh V. G. , Erkaev N. V. , Ivanov V. A. 
Published: October 2018

Abstract
The absorption of stellar radiation observed by HD 209458b in the resonant lines of O i and C ii has not yet been satisfactorily explained. We apply a 2D hydrodynamic multi-fluid model that self-consistently describes the expanding planetary wind, driven by stellar XUV radiation and influenced by tidal forces and the surrounding stellar wind. According to this model, HD 209458b has a hydrogen-dominated plasmasphere, expanding beyond the Roche lobe, in the form of two supersonic streams that propagate toward and away from the star. The species heavier than hydrogen and helium are dragged in the escaping material streams and accelerated up to 50 km s−1. Our simulations show that, assuming solar abundances, O i and C ii produce absorption due to the Doppler resonance mechanism at the level of 6%–10%, which is consistent with the observations. Most of this absorption takes place in the streams. The transit depth in the O i and C ii lines is unaffected by the stellar wind, unless it is strong enough to form a compact bowshock around the planet and able to redirect all the escaping material to the tail. In this case, the absorption profile becomes asymmetric due to the prominent blueshifted attenuation. Thus, the spectroscopic measurements enable probing of the planetary wind character, as well as the strength of the stellar wind. The computed absorption at wavelengths of the Si iii, Mg i, and Mg ii lines at solar abundances appears to be much stronger, compared to the observations. This possibly indicates that Si and Mg may be under-abundant in the upper atmosphere of HD 209458b.
A Magnified View of Circumnuclear Star Formation and Feedback around an Active Galactic Nucleus at z = 2.6
Authors: Geach J. E. , Ivison R. J. , Dye S. , Oteo I. 
Published: October 2018

Abstract
We present Atacama Large Millimeter/submillimeter Array observations of an intrinsically radio-bright (L
1.4 GHz = (1.7 ± 0.1) × 1025 W Hz−1) and infrared luminous (L
IR ≈ 1013
L
⊙) galaxy at z = 2.6. The infrared-to-radio luminosity ratio, q = 1.8, indicates the presence of a radio-loud active galactic nucleus (AGN). Gravitational lensing by two foreground galaxies at z ≈ 0.2 provides access to physical scales of approximately 360 pc, and we resolve a 2.5 kpc radius ring of star-forming molecular gas, traced by atomic carbon C i (1 → 0) and carbon monoxide CO (J = 4 → 3). We also detect emission from the cyanide radical, CN (N = 4 → 3). With a velocity width of 680 km s−1, this traces dense molecular gas traveling at velocities nearly a factor of two larger than the rotation speed of the molecular ring. While this could indicate the presence of a dynamical and photochemical interaction between the AGN and molecular interstellar medium on scales of a few 100 pc, ongoing feedback is unlikely to have a significant impact on the assembly of stellar mass in the molecular ring, given the ∼10 s Myr depletion timescale due to star formation.
Un nouveau « Titre » à écrire…
Authors: Altwegg-Boussac Manon , Rrapi Patricia 
Published: October 2018

La revue du Conseil constitutionnel s’est donnée un nouveau titre : « Titre VII ». Des mots et chiffres ainsi prononcés ouvrent un temps de silence...Dont on ne sait pas tout de suite quoi en tirer.
B Cell Development sans B Cell Receptor Responsiveness Due to Unfolded Protein Response–Triggered Mef2c Protein Degradation
Authors: Chen Yi-Ting , Su Yu-Chia , Kung John T. 
Published: October 2018

Abstract
BCR engagement leads to activation and clonal expansion of B cells. The I-A12% mutant mouse possesses a branch site point mutation in the H2-Aa gene that causes highly reduced I-Aa protein expression. As I-A is a heterodimer made up of I-Aa and I-Ab, reduced I-Aa results not only in reduced surface I-A expression but also in an excess of unpaired I-Ab. B cells that develop in I-A12% mice proliferated in response to LPS stimulation but failed to do so upon BCR stimulation. Developing I-A12% B cells were engaged in unfolded protein response due to an excess of unpaired I-Ab. BCR responsiveness was restored by transduced I-Aa expression and by BiP, the unfolded protein response sensor. Reducing the load of unpaired I-Ab also restored BCR responsiveness of I-A12% B cells. Mef2c protein, a transcription factor required for BCR-stimulated proliferation, was missing in I-A12% B cells, and that transduced Mef2c expression restored BCR responsiveness. Mef2c protein appeared in I-A12% B cells after addition of proteasome inhibitors. Mef2c degradation was mediated by Skp2 E3 ligase, and that knockdown of Skp2 mRNA in I-A12% B cells restored BCR responsiveness. Our results point to a generalized incompatibility between BCR responsiveness and increased Skp2 stability. They also imply the existence of regulatory mechanisms other than Ig gene rearrangement that govern Mef2c turnover in a specific, exquisite, and dynamic fashion.
Integration of treatment technologies with Fenton reagent for laboratory effluent remediation
Authors: Pereira Chrystopher Allan Miranda , Brito Núbia Natália 
Published: October 2018

This study investigated of the potential value of the integration of the coagulation/flocculation, Advanced Oxidation Processes (AOP) (Fenton reagent) and slow sand filtration technologies, with the aim of treating laboratory wastewater. The treatment system was designed in laboratory scale through coagulation/flocculation. It involved the use of Jar Test equipment with a sequence of two rotational phases: fast mixes to 300 rpm for 20 seconds and slow mixes to 30 rpm for 6 minutes and 10 seconds, with the addition of anionic polymer and sedimentation for 60 minutes at ambient temperature. In the treatment via Fenton reagent, two rotational phases were used: rapid mixing at 300 rpm for 20 seconds with the addition of iron (Fe2+) and slow mixing at 30 rpm for 6 minutes and 10 seconds with the addition of hydrogen peroxide, followed by 60 minutes of sedimentation at ambient temperature. A cylindrical tank of polyvinyl chloride, sands and non-woven synthetic fabrics were used in the slow filtration. The filtration rate adopted was 3 m3 m-2 d-1 with a hydraulic retention time of 264 minutes. The best concentrations of chemical reagents used in the treatments were: 0.80 mg L-1 of polymeric anionic, 200.00 mg L-1 of H2O2 and 13.00 mg L-1 of total soluble iron. The integration of the treatment technologies made it possible to achieve a removal rate of 75.27% of COD and 94.12% of total phenols. Furthermore, the conjugation of the processes allowed the removal of 87.58% of TOC.