bluuebunny/crossref_metadata_2025 huggingface dataset:
Comparison of prophylactic versus preemptive treatments in the management of cytomegalovirus infection in renal transplant recipients
Authors: Karaçin Cengiz , Yaşar Emre , Helvacı Özant , Güz Galip
Published: September 2020

To prevent acute or chronic rejection in renal transplant recipients, immunosuppressive treatments are applied. However, immunosuppressive treatments increase the risk of cytomegalovirus (CMV) infection. The aim of this study was to evaluate the differences in efficacy and cost of prophylactic and preemptive treatment strategies applied in respect of CMV infection to renal transplant recipients.

Methods. Patients who underwent renal transplantation in our center between 2010 and 2015, were retrospectively analyzed. The patients were allocated in two groups as those who received prophylaxis or preemptive treatment. A record was made of the kidney function tests (KFT), CMV PCR copy numbers, the presence of CMV infection, antiviral treatments received, and the costs were calculated of the tests and treatments. The groups were compared in respect of CMV infection and costs.

Results. A total of 71 patients with a median age of 38 years (range, 19-74 years) were included in the study. The prophylaxis group included 43 patients and the preemptive group included 28 patients. CMV infection was detected in 7 (16.3%) of the prophylaxis group and 2 (7.1%) patients of the preemptive group (p=0.467). The cost per month of the tests and treatment was lower in the preemptive group than in the prophylaxis group (p<0.001).

Conclusion. No significant difference was determined between the prophylactic and preemptive treatment protocols in respect of the CMV infection in the intermediate-risk group renal transplantation recipients. Preemptive treatment was seen to be a more cost-effective method than prophylactic treatment in Turkey.
Additional Treatment Using Transcatheter Arterial Infusion with Drug-Eluting Beads Transarterial Chemoembolization Contributes to Prolonged Survival of Patients with BCLC Stage C Hepatocellular Carcinoma after Discontinuing Lenvatinib: Preliminary Study
Authors: Ishikawa Toru , Ishikawa Toru , Endo Saori , Imai Michitaka , Azumi Motoi , Nozawa Yujiro , Sano Tomoe , Iwanaga Akito , Honma Terasu , Yoshida Toshiaki
Published: September 2020

Objective: Lenvatinib is considered the first-line treatment for unresectable advanced hepatocellular
carcinoma (HCC); however, in some clinical cases, discontinuation of lenvatinib is unavoidable. It is
important to elucidate if transcatheter arterial infusion (TAI) with drug-eluting beads transarterial
chemoembolization (DEB-TACE) is a feasible second-line treatment after discontinuing lenvatinib. In this
study, we aimed to evaluate the efficacy, hepatic function and nutritional status associated with TAI with
DEB-TACE for patients who previously discontinued lenvatinib.
Materials and Methods: We included 35 patients who were prescribed lenvatinib for unresectable HCC
between July 2018 and December 2019, of whom 12 discontinued lenvatinib during the study. The changes
in the albumin-bilirubin (ALBI) score and the controlling nutritional status (CONUT) score before and after
discontinuing lenvatinib were examined. Furthermore, the tolerability and survival of patients treated using
TAI with DEB-TACE as a second-line treatment were analysed.
Results: The ALBI and CONUT scores were significantly worse when lenvatinib was started and stopped
(p<0.05). The CONUT score was significantly worse in the second-line group than in the follow-up group
when beginning and discontinuing lenvatinib; however, this score tended to improve after DEB-TACE. The
group that underwent TAI with DEB-TACE as a second-line treatment had significantly better survival than
the follow-up group (log‑rank test, p=0.029; generalized Wilcoxon test, p=0.042).
Conclusion: In patients who could undergo TAI with DEB-TACE as a second-line treatment after
discontinuing lenvatinib, the CONUT score improved, while the ALBI score was maintained and welltolerated; these scores may have contributed to improved survival compared with follow-up patients. Future
studies with larger sample sizes are necessary to confirm our findings.
Endolymphatic Sac Tumor: A Rare Case
Authors: Algarni Amal , Algarni Amal , Orz Yaser , Muzzafar Sofia , Alshakweer Wafa
Published: September 2020

Endolymphatic sac tumor is rare, locally aggressive and non-metastasizing neoplasm arising from the
endolymphatic sac of the petrous portion of the temporal bone. Most occur in adult and present with
ipsilateral hearing loss. They can be sporadic or associated with Von-Hippel-Lindau disease. Patient with
endolymphatic sac tumor should be screened for VHL disease. We report a case of 52-year-old female with
dizziness and headache. Histopathology was consistent with typical features of endolymphatic sac tumor.
This was confirmed by cytokeratin and EMA positivity and TTF-1 negativity. This case is presented for its
rarity with only few cases reported.
Cannabinoid Hyperemesis Syndrome: A Review of the Literature
Authors: Eleonore Deceuninck , Denis Jacques
Published: September 2020

Background: Cannabinoid Hyperemesis Syndrome (CHS) is characterized by cyclic vomiting and compulsive need to take hot showers in the context of chronic cannabis use. Physicians' lack of knowledge of CHS often results in a diagnostic delay of several years. The purpose of this article is to describe CHS in order to enable physicians, and more particularly psychiatrists, to diagnose it as quickly as possible and thus avoid unnecessary additional invasive examinations. Subjects and methods: Bibliographic search for scientific articles published between 2004 and 2019 in the Cochrane, Medline, PubMed, and Psycinfo databases. Key words used were "hyperemesis", "cannabis", "cannabinoid". Results: CHS is associated with chronic cannabis use and typically manifests as incoercible cyclical vomiting, diffuse abdominal pain, and relief of symptoms by taking hot showers. Patients suffering from CHS generally visit emergency departments very regularly and undergo numerous additional examinations, both invasive and unnecessary. Since no organic cause can explain these symptoms, these patients are referred to the psychiatry department. The only curative treatment is the complete cessation of cannabis use. Conclusion: CHS is an under-diagnosed pathology because it is little known to physicians. This syndrome has unique clinical characteristics. Early recognition of CHS avoids repeated visits to the emergency room and unnecessary follow-up examinations.
Professional Opera Singers’ Voice Disorders In Relation To Voice Type
Authors: Clarós Pedro
Published: September 2020

Objective: To determine whether there is a relationship between the voice type and the prevalence of voice disorders, and to investigate the frequency of laryngological controls and voice rehabilitation amongst professional opera singers. Study design: Cohort study, composed of a survey, videolaryngoscopy and videostroboscopy. Setting: Referral center (Clarós Otorhinolaryngology Clinic) Subject and methods: Highly professional opera singers performing in the Gran Teatro del Liceo in Barcelona, were divided into 7 study groups based on their voice types. Study was composed of a survey about singing and voice care habits, followed by videolaryngoscopy and videostroboscopy determining the prevalence of voice disorders. Results: We examined 70 opera singers (30 females, 40 males; aged 19-70), divided into 7 equally numerous study groups based on their voice types. The prevalence of voice disorders was the highest amongst sopranos, i.e. 50% (50%,95%,CI:12-88,SD=.53), in comparison to 20% (20%,95%,CI:10-50,SD=.42) amongst countertenors, tenors and baritones, 10% (10%,95%,CI:13-33,SD=.32) amongst contraltos and mezzo-sopranos, and 0% amongst basses. Statistical significance was confirmed for difference between the group of the highest female and highest male voice (soprano and countertenor), and the group of the lowest female and lowest male voice, i.e. contralto and bass (Z=2.32,P=.02). Frequency of attending laryngological appointments and voice rehabilitation was generally very low, although was highest amongst sopranos. Conclusion: Results supported our hypothesis that the higher voices are at a heightened risk of having voice disorders. It can start the process of evaluating actual risk of vocal fold pathologies that opera singers are exposed to during their careers.
Gender Differences in Sexual Dysfunction of Patients with Schizophrenia
Authors: Nakhli Jaafar
Published: September 2020

The prevalence of sexual dysfunction in patients with schizophrenia ranged from 50 to 85%. One hundred outpatients with schizophrenia had participated in this study. All these patients had remission criteria. We used sociodemographic and clinical characteristics from medical files and we passed to our patients PANSS and ASEX. Comparison was between female and male groups. Sexual dysfunction was present in 55% of patients with schizophrenia. Women had higher total ASEX score than men especially in Arousal disorders and orgasm. There was a relationship between the ASEX total score and dose of treatment and with the severity of symptoms.
Infectious Aneurysm Formation after Coronary Stent Implantation
Authors: Soomro Khalida
Published: September 2020

The formation of coronary artery aneurysm (CAA) is one of the critical complications after percutaneous coronary intervention (PCI). The most common aetiologies and aggravating factors for aneurysmal dilatation are acquired, such as atherosclerosis, Kawasaki disease, Takayasu disease, connective tissue disease, trauma after percutaneous coronary intervention (PCI) and infections. Cardiac catheterization itself carries a negligible bacteremic risk. We present the case of a patient who had infective coronary artery aneurysms that developed after PCI. A 63 years old male who had ST-T MI 1 month back and underwent primary percutaneous coronary intervention with deployment of 1 Des stent in Mid left anterior polymer-based paclitaxel-eluting stent 63 years having primary PCI for LAD 1 month back in the left anterior descending artery and A large aneurysm developed MID DES. The patient had C/O high grade fever only since 3 weeks remained asymptomatic then had angina at rest for 4 days. An aneurysm was diagnosed at middle of DES on repeat coronary angiography. Intravascular ultrasound demonstrated a true aneurysm about 5.6 mm in diameter. We will review the literature and discuss the causes specially infectious aneurysm and treatment option of aneurysm with stent usually detected at the time of repeat angiography for recurrent symptoms or as apart of the routine angiographic follow up [1].
Certain properties of contra-T*12-continuous functions
Authors: J. Mustafa Hadi , M. H. Alabdulsada Layth
Published: September 2020

Abstractâ€”The concept of contra function was introduced by Dontchev [2], in this work, we use the notion of T*12-open to study a new class of function called a contra-T*12-continuous function as generalization of contra- continuous.
Converting of copper-lead matte: loss of gold and silver with slag
Authors:   Satbayev University, Almaty, KZ, Dosmukhamedov N.K. , Argyn A.A. ,   Satbayev University, Almaty, KZ, Zholdasbay Е.Е. ,   Satbayev University, Almaty, KZ, Kurmanseitov M.B. ,   Satbayev University, Almaty, KZ
Published: September 2020

Based on comprehensive studies, including methods of elemental, X-ray phase analysis and mineralogical studies of solid slag and dust samples, quantitative ratios of the forms of finding copper, lead and precious metals are determined, a mechanism for the distribution of gold and silver between converting products is established. It is shown that the loss of gold and silver under the conditions of converting of copper-lead matte is associated with their redistribution between converter slag and dust. It was established that the loss of gold with converter slag and dust is determined by the content of mechanical losses of copper in them. Loss of silver in the slag is determined by the content of lead in them. As a result of mathematical processing of the compositions of the converting products, the regression equation of pair correlation is constructed, which describes the dependence of the gold loss in slag on the mechanical loss of copper in it with a high correlation coefficient (r = 0.92). An increase in mechanical losses of copper in slag from 0.5 to 0.95% leads to an increase in the gold content in slag by more than 1.5 times. An increase in the copper content in the form of sulfide in dust from 1.5 to 3% increases the gold content in dust from 2 to 7%. Unlike gold, silver is highly correlated with lead. An increase in the content of lead in slag from 17 to 25% increases the silver content in it from 100 to 150 g / t. It is shown that in the process of converting copper-lead matte, it is necessary to provide measures to minimize losses of copper and lead in slag, which will reduce the gold and silver contents in them and significantly increase their extraction into blister copper. To reduce the loss of gold, a solution is necessary on the one hand, the task of reducing the mechanical loss of copper with slag, and on the other, minimizing dust removal under conditions of converting copper-lead mattes.
A mathematical model for determining the influence of factors on the stability of pillars and cameras
Authors:   Karaganda State Technical University, Tutanov S.K. , Tutanov M.S. ,   Karaganda State Technical University, Tutanova M.S. ,   Karaganda State Technical University
Published: September 2020

This article presents the results of the research in determining the parameters of the stress-strain state of the rock mass around pillars, cameras and factors, which affect their stability. The vertical section of cirque around the ledges is considered as well. A flat deformed rectangular plane is divided by triangle grid with a corresponding boundary. Boundary conditions are chosen as a calculation scheme. A multidimensional mathematical model of the pit sides stability was obtained from the geological and mining factors. From the obtained formula for a multidimensional model, we can determine the factors that affect the stability of pillars and cameras. The resulting ratio makes it possible to determine the desired value.
Study of the process of rhenium extraction from lead slime
Authors:   Al-Farabi Kazakh National University, Almaty, Kazakhstan, Berdikulova F.A. , Ikhlasova A.T. ,   Al-Farabi Kazakh National University, Almaty, Kazakhstan
Published: September 2020

This article studies the oxidative firing process of lead sludge of copper production for the purpose of extracting rhenium. As an oxidizer, calcium hypochlorite is used, which is simultaneously an oxidizer of low-valent rhenium compounds and a binding reagent of rhenium oxides to calcium perrenate. Optimal conditions for the firing process are found: the firing temperature is 500-600°C, the firing duration is 30-60 minutes, and the oxidizer consumption is 20-40 % of the sludge mass. As a result of thermal studies and experimental work, it was established that the rhenium oxidation process begins at 180-260 °C after the decomposition of calcium hypochlorite and completely ends at 500-600 °C with the formation of calcium perrenate. During water leaching of the stub under the following conditions: T: W=1: 3, temperature of 70 °C, duration of 60 minutes, a solution containing 546 mg/l of rhenium was obtained. The degree of rhenium recovery in the solution was 93-94 %.
Research of hydrometallurgical method of leaching gold from flotation tails with using bio-oxidation
Authors:   Satbayev University, Institute of Metallurgy and Ore Beneficiation JSC, Almaty, Kazakhstan, Koizhanova A.K. , Toktar G. ,   Satbayev University, Institute of Metallurgy and Ore Beneficiation JSC, Almaty, Kazakhstan, Craig E.Banks ,   Manchester Metropolitan University, England, Magomedov D.R. ,   Satbayev University, Institute of Metallurgy and Ore Beneficiation JSC, Almaty, Kazakhstan, Kubaizhanov A.A. ,   Satbayev University, Almaty, KZ
Published: September 2020

This paper shows the results of the comparative study of the efficiency of gold extraction methods from technogenic flotation tails by agitation cyanidation and biooxidation followed by leaching. A representative sample of flotation tails was taken at gold extraction plant of Altyntau Kokshetau LLP. It was established that in the test sample contains 0.47 g / t Au and 0.62 g / t Ag. The gold extraction degree from flotation tailings with 80% content of 0.071 mm fraction was 50%, and that with 90% content of 0.071 mm fraction was 60%. Gold extraction plant's flotation tailings grinded to 0-0.044 mm fraction with sodium peroxide were subjected to pre-oxidation. The gold extraction degree from flotation tailings with 90% content of 0.044mm fraction at a solid-liquid ratio of 1:4 and a cyanide concentration of 1 g/dm3 is 65.2%. By using an active strain of thionic cultures the gold extraction degree was 72.1%
On the issue of minimizing carbon dioxide emissions into the atmosphere during the processing of industrial waste
Authors:   S. Seifullin Kazakh Agro Technical University, Nur-Sultan, Kazakhstan, Dikhanbaev B.I. , Dikhanbaev A.B. ,   University of Energy and Communications, Almaty, Kazakhstan
Published: September 2020

The industrial activity of mankind using mineral raw materials and fossil fuels is steadily increasing man-made waste and carbon dioxide emissions. These factors, in turn, lead to pollution of the soil, air and an increase in the temperature of the earth’s atmosphere. This article discusses an example of waste-free processing of excavated slag and the search for a method of minimizing carbon dioxide in the exhaust gases of the smelting unit. When solving this problem, the main provisions of the method of extreme energy saving were used: 1) selection of a high-performance melting unit; 2) the formation of a technology that allows decreasing carbon dioxide emissions into the atmosphere; 3) development of a heating scheme for an energy-saving, waste-free, environmentally friendly processing of industrial waste. On the basis of the created energy-saving unit “reactor inversion phase – rotary kiln”, a thermal scheme for waste-free processing of zinc-containing slag has been developed. It is proposed that “CO2, H2O” in the reactor exhaust gas be reduced with zinc vapors to “CO, H2”. The resulting excess hydrogen will be used to displace from CO elemental carbon, which will serve as reducing agent in the zinc distiller. In case of implementation, the proposed system expects integrated waste management, minimization of CO2 emissions into the atmosphere up to 50% and a five-fold reduction in the specific fuel consumption per process
Extraction of copper from pregnant leaching solutions of lead dusts by liquid extraction
Authors:   LLP “Space of Implementation Research Testing”, Altaibayev B.T. , Khabiyev A.T. ,   Non-commercial joint-stock company "Satbayev University", Kazakhstan, Baigenzhenov O.S. ,   Non-commercial joint-stock company "Satbayev University", Almaty, Kazakhstan, Bulenbayev M.Zh. ,   LLP "Joint Venture "Southern Mining and Chemical Company", Turan M.D. ,   Firat University, Elazig, Turkey
Published: September 2020

This paper presents the results of studies of intermediate processing for liquid extraction and re-extraction of copper from sulfate solutions obtained during agitation sulfuric acid leaching of lead dusts, which are technogenic wastes of the Zhezkazgan copper smelter and contain valuable components: more than 38 % lead, 2.4 % iron, 3 % zinc, 3.5% copper, 0.7 % arsenic, etc. The utilization of them can provide additional commercial products and improve the ecological environment of the area where they are located. The article also presents the results of the material balance of the processes of liquid extraction and copper re-extraction.
Testing of the modified reagent during the dressing of oxidized copper ore in the enlarged laboratory conditions
Authors:   Zh. Abishev Chemical-Metallurgical Institute, Karaganda, Republic of Kazakhstan, Oskembekov I.M. , Burkitseterkyzy G. ,   Zh. Abishev Chemical-Metallurgical Institute, Karaganda, Republic of Kazakhstan, Akubaeva M.А. ,   Zh. Abishev Chemical-Metallurgical Institute, Karaganda, Republic of Kazakhstan, Gizatullina D.R. ,   Zh. Abishev Chemical-Metallurgical Institute, Karaganda, Republic of Kazakhstan, Zhunussov E.M. ,   Zh. Abishev Chemical-Metallurgical Institute, Karaganda, Republic of Kazakhstan
Published: September 2020

In connection with the depletion of the ore base of the copper industry, there is a question of replenishing raw materials. In this regard, the involvement of oxidized copper ores in the processing is an urgent task. The paper presents the results of testing on an enlarged laboratory scale of the technology of flotation beneficiation of oxidized copper ore in the Balkhash region, based on preliminary sulfidization of the ore with a modified reagent. Research has been carried out to study the kinetics of the main, control and cleaning operations of oxidized copper ore flotation. Based on the data obtained, graphs of the dependence of copper extraction on the duration of operations were constructed. It has been established that preliminary sulfidization of ore with a modified reagent at its consumption of 20% of the stoichiometrically required amount makes it possible to obtain a commercial flotation copper concentrate with a content of 21% and recovery of 85% of copper.
Obtaining hydroxyapatite coatings by mechanochemical interaction
Authors:   Satbayev University, Institute of Metallurgy and Ore Beneficiation JSC, Almaty, Kazakhstan, Mamaeva А.А. , Kenzhegulov А.K. ,   Satbayev University, Institute of Metallurgy and Ore Beneficiation JSC, Almaty, Kazakhstan, Panichkin А.V. ,   Satbayev University, Institute of Metallurgy and Ore Beneficiation JSC, Almaty, Kazakhstan, Shah A. ,   Sultan Idris Education University, Malaysia
Published: September 2020

The research represents a newly-developed simple method to apply hydroxyapatite by gas-dynamic spraying. The hydroxyapatite coating formed on VT1-0 titanium were obtained following the mechanochemical interaction of hydroxyapatite and titanium with gas-dynamic spraying. The article proposes the phase composition, surface morphology, and roughness of these coatings. The surface morphology of the hydroxyapatite coating had a porous structure. The transverse sections of coatings were researched to study the interaction of hydroxyapatite with a titanium base. It was shown that the coatings mainly form in the titanium bedding depressions. Analyzing the roughness parameter Ra of hydroxyapatite coatings made it possible to conclude that the samples obtained fell almost within the same limits. These data are within the roughness optimum (Ra = 2-3 μm) of artificial surfaces aimed to manifest the best human osteogenic properties. The analyzed phase composition enabled to establish the fact that the hydroxyapatite layer composition does not change significantly after spraying that is important for biomedical use.
Uranium extraction with modified sorbents
Authors:   Satbayev University, Institute of Metallurgy and Ore Beneficiation JSC, Almaty, Kazakhstan, Abdikerim B.E. , Kenzhaliyev B.K. ,   Satbayev University, Institute of Metallurgy and Ore Beneficiation JSC, Almaty, Kazakhstan, Surkova T.Yu. ,   Satbayev University, Institute of Metallurgy and Ore Beneficiation JSC, Almaty, Kazakhstan, Didik N. ,   Universitas Negeri Yogyakarta, Indonesia, Berkinbayeva A.N. ,   Satbayev University, Institute of Metallurgy and Ore Beneficiation JSC, Almaty, Kazakhstan, Dosymbayeva Z.D. ,   Satbayev University, Institute of Metallurgy and Ore Beneficiation JSC, Almaty, Kazakhstan, Umirbekova N.S. ,   Satbayev University, Institute of Metallurgy and Ore Beneficiation JSC, Almaty, Kazakhstan
Published: September 2020

Hydrometallurgical processing of uranium-containing raw materials generates a significant amount of liquid industry-related waste, namely waste solutions that require disposal. Sorption is known as one of the most effective methods for purifying liquid matters contaminated with radionuclides. Various modification options are being developed for the purpose of using natural sorbents and increasing their sorption capacity. The authors proposed the methods for modifying natural aluminosilicate and coal-mineral raw materials. Zeolite found at the Kusmurun deposit and shungite from the Koksu deposit were selected for the research. The methods are based on obtaining solid-phase extractants. It was proposed to modify natural sorbents with a mixture of tributyl phosphate and di2-ethylhexyl phosphoric acid in kerosene, as well as a mixture of phosphoric acid and polyacrylamide. It was demonstrated that the first method is preferable for zeolite, and the second one for shungite. The research addressed the sorption properties of modified sorbents in static and dynamic modes. Uranium sorption isotherms were plotted. The maximum sorption capacity and the Langmuir constant were calculated. The research allowed synthesizing an organopolymer based on shungite, glycidyl methacrylate, orthophosphoric, and hydroxyethyl diphosphoric acids. Its sorption properties were studied under dynamic conditions. Its sorption capacity was assessed in comparison with modified natural sorbents.
Hubungan Media Sosial dalam Pembentukan Karakter Anak
Authors: Dewi Erni Ratna
Published: September 2020

Children are valuable assets for parents, children become a reflection of how their parents themselves. Social media as a social structure that comes from individuals and organizations that comes from individuals and organizations that are bound by the similarity of users. The research method used is a combination of qualitative and quantitative descriptive or commonly reffered to as mixed methods. Data sources consist of primary and secondary data. The population in this study were parents of class IV to class VI at 4 Elementary Schools. The sampling technique used was random sampling method which was obtained by 124 respondents. Data analysis techniques are descriptive statistics and Chi-Square analysis. The results found that the social media is determined by the application, content and effects caused in the formation of children’s characters. Social media applications have a relationship in shaping the character of children. The application is tailored to the needs of children such as applications than can help the child’s learning process, increase their knowledge and socialization. Social media content has a relationship is shaping the character of children. The content is tailored to the needs of children who sould be a concern of parents to provide supervision of what children do with gadgets. The effect of social media has a relationship in the formation of children’s character. This shows that social media as a whole has a bad effect on the formation of childred’s characters. This is because social media not only has positive values, but also negative ones depending on the application and the content they have.
A review on convenience and pollution caused by baby diapers
Authors: Sachidhanandham Aishwariya , M Priyanka
Published: September 2020

The one-time use and throw material are both alluring and alarming. One such is a baby diaper that takes more than 400 years to degrade in a landfill. The industry is embracing nonwovens (pads, wipes, napkins) and single-use materials to cater to the huge demand from the consumer community. Hence, to combat this diaper pollution, awareness of both the sectors is important. The toxicity associated with a product loaded with chemicals and a conscious choice that is to be made between convenience and pollution is briefed here. The paper addresses the history, nature, market share of one-time disposals with a special focus on baby diapers. The pollution and challenges in recycling diapers along with sustainable brands and commercially successful companies making eco-friendly products are identified. The latest buzz, including biopolymers and circular economy, are also discussed to give a complete perspective on the topic.
A Mathematical Model of Shifted Gamma Distribution for Internet Traffic Packet Delay over a Next Generation Core Internetwork
Authors: Lam Dao Ngoc , Lap Le Huu , Thang Le Nhat
Published: September 2020

Broadband  Internet  traffic  is transported over the  next generation  core internetworks, which are composed of several IP/MPLS/GE network sections and transport  multi-services. In practice, IP packet delay is normally  measured  in  each  separated  network  section but  not  over  a  whole  internetwork.  It  is  proved  in  the paper  that  packet  delay  distribution  of  Internet  traffic component  in  core  network  sections  can  be approximately  expressed  as  a  shifted  gamma distribution.  Moreover  a  new  explicit  mathematical model  based  on  shifted  gamma  distribution  has  also been proposed to compose delay distribution of Internet traffic  packet  transported  over  a  core  internetwork from  component  ones  in  each  network  section.  It  is resulted from this model that Internet packet delay over an  internetwork  inherits  distribution  properties  from that  over  component  networks.  Other  properties  and parameters  relationship  of  the  model  such  as  additive property of shape and location parameters, the relation between  distribution  lower  moments  and  parameters, the dependence  of distribution  on parameters variation are also exposed in the paper. The proposed model of IP packet  delay  distributions  has  a  certain  scientific significance  and  plays  an  important  role  in  practical performance analysis, network  planning, designing and traffic engineering for improving the quality of service
Taxonomy of resource allocation algorithms for inner IaaS cloud data centres
Authors: Quan Dang Minh
Published: September 2020

Cloud computing has become more and more popular  with  the  widely  deployment  of  several  cloud infrastructures.  Infrastructure-as-a-service  (IaaS) Cloud  computing  replaces  bare  computer hardware. The cloud user  will use the virtual  machines (VMs)  to  fullfil  their  computing  requirements.  Among the  components  of  IaaS  cloud  software  stack,  the resource  allocation  module  is  very  important  as  it selects suitable VMs and the place to execute VMs. This paper  focuses  on  studying  and  classifying  algorithms used  in  the  resource  allocation  module.  The  issues  of how to apply those algorithms are also discussed.
SENDİKASYON KREDİLERİ İLE HİSSE SENEDİ PİYASASI HAREKETLERİ ARASINDAKİ İLİŞKİNİN ANALİZİ: TÜRKİYE ÖRNEĞİ
Authors: TEKİN Bilgehan
Published: September 2020

ÖZET Sendikasyon kredileri, farklı ülkelerden çok sayıda bankanın katıl sağladığı özel bir tür kredi sözleşmesidir. Sendikasyon kredileri, özellikle gelişmekte olan ülkeler için önemli bir dış finansman kaynağıdır. Sendikasyon kredisi, bankalar ve bankacılık sektöründeki uluslararası finans kurumlarının (fon kaynakları) ve piyasaların güvenini yansıtır. Katılımcı bankalar ve kredi tutarları yatırımcılar tarafından da dikkate alınmaktadır. Etkin piyasalar hipotezine göre, şirketler hakkındaki yeni bilgilerin hisse senedi fiyatlarını etkileyeceği varsayılmaktadır. Bu bağlamda, sendikasyon kredilerinin hisse senetlerinde fiyat hareketlerine yol açması beklenir. Bu çalışmada, Türkiye'de bankacılık sektörünün sağladığı sendikasyon kredileri ile hisse senedi piyasası endeksleri arasındaki ilişki araştırılmıştır. Bu kapsamda Bankacılık Düzenleme ve Denetleme Kurumu ile Borsa İstanbul’dan elde edilen veriler üzerinden Granger Nedensellik ve Johansen Eşbütünleşme analizleri gerçekleştirilmiştir. Sonuçlar değişkenler arasında kısa ve uzun dönemli ilişkiler olduğunu göstermektedir. Bankacılık sektörü endeksi ile sendikasyon kredileri arasında iki yönlü olan bu ilişki uzun vadede negatiftir. BIST100 ile sendikasyon kredisi kullanımı arasındaki ilişki pozitif ve çift yönlüdür.
İÇ KONTROL SİSTEMİNİN KURUMSALLAŞMA ÜZERİNE ETKİSİ: DEVLET ÜNİVERSİTELERİ ÜZERİNE BİR ARAŞTIRMA
Authors: HACIHASANOĞLU Tansel , ÇAĞLI Tolga
Published: September 2020

Kamu ya da özel sektör işletmelerinin yanı sıra üniversitelerde de kurumsallaşma ve iç kontrol kavramlarının önemi artmaktadır. Özellikle devlet üniversiteleri karşısında özel üniversite sayısının artması bu kavramların önemini daha da arttırmaktadır. Devlet üniversitelerinin özel üniversitelere karşı eğitim kalitesini, öğrenci sayısını ve kaliteli bilimsel yayınlarını arttırma konusunda başarı gösterebilmeleri için kurumsallaşma ve iç kontrol sistemi konularında ilerleme kaydetmeleri gerekir. Bu çalışmada, devlet üniversitelerinde iç kontrol sisteminin kurumsallaşma üzerine etkisi araştırılmıştır. Çalışma devlet üniversitelerinin bünyesinde bulunan iç denetim birimlerine yönelik yapılmıştır. Söz konusu iç denetim birimlerinde çalışan iç denetçi ve iç denetim birim başkanlarına, kurumsallaşma ve iç kontrol konuları ile ilgili ölçeklerden oluşan anketler posta yolu ile gönderilmiştir. Elde edilen veriler analiz edildiğinde, devlet üniversitelerinin kurumsallaşma düzeyi ile iç kontrol sistemi arasında yüksek derecede ilişki olduğu belirlenmiş; iç kontrol sisteminin aynı zamanda kurumsallaşma düzeyi üzerinde önemli düzeyde etkiye sahip olduğu belirlenmiştir. Ayrıca üniversite bazında çeşitli demografik özellikler açısından iç kontrol sistemi ve kurumsallaşma düzeyinin farklılaşıp farklılaşmadığı kurulan hipotezler vasıtasıyla test edilmiştir.
Inwentarz biblioteki bernardynów w Kalwarii Zebrzydowskiej z 1617 roku
Authors: Pabin Władysław
Published: September 2020

Autor na podstawie pochodzącego z 1617 r. inwentarza biblioteki bernardynów z Kalwarii Zebrzydowskiej pokazuje w jak sposób można wykorzystać tego typu dokument w badaniach nad historią książki i księgozbiorów. Właściwy opis regestru i jego analiza metodyczna zostały poprzedzone historią księgozbioru kalwaryjskiego. Sam klasztor został ufundowany przez wojewodę krakowskiego Mikołaja Zebrzydowskiego w 1602 r. Bernardyni interesowali się książką i każdy klasztor posiadał bibliotekę. W przypadku Kalwarii istotnym źródłem do poznania najstarszej biblioteki jest inwentarz jej zasobów z 1617 r. Zakonnicy mieli do dyspozycji zasadniczą literaturę potrzebną w ich pracy wewnętrznej i zewnętrznej. Biblioteka znajdowała się w specjalnym pomieszczeniu, a książki były ustawione na półkach według formatu. Za skompletowanie zbioru i jego uporządkowanie odpowiedzialny był Ludwik Boguski (bibliotekarz konwentu w latach 1611–1618). Boguski niemal w całości skompletował bibliotekę, co niewątpliwie wpłynęło na sporządzony inwentarz. Współcześnie, analizując opisy książek podanych w inwentarzu, badacze mogą śledzi erudycję twórcy spisu i jego stosunek do książki (m.in. zwracając uwagę na to, co autor inwentarza uważa za ważne w książce, jakie podaje elementy ją charakteryzujące, jakie popełnia błędy). Można również zastanawiać się, czy autor sam wypracowuje schemat opisu czy też go zapożycza, czy pracę wykonuje mechanicznie, czy odnotowuje cechy wyróżniające.
Z dziejów biblioteki kodeńskiej Sapiehów
Authors: Domańska Hanna
Published: September 2020

Biblioteka zgromadzona w Kodniu założona została przez kanclerza wielkiego litewskiego Jana Ferdynanda Sapiehę (1680-1751). Powiększana przez spadkobierców, liczyła w chwili przekazania jej przez szambelana cesarza Napoleona i miecznika Księstwa Warszawskiego Aleksandra Sapiehę (1773-1812) Warszawskiemu Towarzystwu Królewskiemu Przyjaciół Nauk 6000 woluminów. Artykuł stanowi komunikat o stanie badań prowadzonych nad zagadnieniem biblioteki kodeńskiej oraz charakterem bibliofilstwa tych przedstawicieli wspomnianego rodu, którzy przyczynili się do powstania i pomnożenia księgozbioru. Analiza ta powstała w oparciu o istniejące źródła drukowane, archiwalia dotyczące Sapiehów przechowywane w Archiwum Głównym Akt Dawnych, Bibliotece XX Czartoryskich w Krakowie oraz Bibliotece Jagiellońskiej, a przede wszystkim w oparciu o analizę ocalałych egzemplarzy z proweniencjami sapieżyńskimi (227 pozycji), znajdujących się obecnie w Oddziale Starych Druków BUW.
Księgozbiór Wacława Aleksandra Maciejowskiego – warsztat pracy uczonego
Authors: Chober Halina
Published: September 2020

Wacław Aleksander Maciejowski (1792-1883) był historykiem kultury, słowianoznawcą i reprezentantem kierunku romantyczno-słowianofilskiego, pierwszym w Polsce przedstawicielem szkoły historycznej w prawoznawstwie. Należał do grona najwybitniejszych polskich uczonych XIX w. Podejmując i rozwijając swoje badania nad dziejami narodów słowiańskich, zgromadził bogaty księgozbiór reprezentujący liczne, interesujące go dziedziny wiedzy. Niniejszy artykuł nie stanowi jednak pełnej monografii specjalistycznego księgozbioru Maciejowskiego, ale stawia sobie za zadanie charakterystykę tylko tej części pełniącej funkcji warsztatu naukowego. W artykule skupiono się również na relacjach obejmujących zainteresowania i twórczość naukową Maciejowskiego – jego kontakty naukowe, osobiste i korespondencyjne.  Konsekwencją takiego podejścia jest pominięcie wielu wybitnych dzieł naukowych oraz tych dyscyplin wiedzy, które są reprezentowane w omawianym księgozbiorze, ale nie odgrywają większej roli z punktu widzenia przyjętej metodologii. Wybrana część księgozbioru przedstawiona została zgodnie z chronologią zainteresowań bohatera artykułu w trzech podstawowych grupach tematycznych: historia, prawo, filologia. W obrębie tych bloków zastosowano układ środowisk naukowych (uniwersyteckie z okresu studiów Maciejowskiego, Warszawę, następie pozostałe ośrodki polskie i obce).
Akta hipoteczne i materialne jako źródła badań nad księgozbiorami prywatnymi XIX –XX wieku. Zagadnienia metodologiczne
Authors: Chamerska Halina
Published: September 2020

Dokumenty hipoteczne i notarialne (najczęściej pod postacią ksiąg wieczystych, wykazów hipotecznych, spisy nieruchomości, skorowidzów, testamentów, ksiąg korespondencji czy innych dobrowolnych czynności prawnych) nie często wzbudzał zainteresowanie badaczy. Walor tych zbiorów wzrósł jednak po zniszczeniach (całkowitych bądź częściowych) wielu bezcennych polskich archiwaliów w czasie II wojny światowej. Ze względu na utratę właściwszej bazy źródłowej zaczęto szukać „materiałów zastępczych”, które umożliwiłyby opracowanie wielu tematów i problemów, a akta hipoteczne i notarialne tylko w niewielkim stopniu uległy zagładzie. Celem artykułu jest więc przedstawienie potencjału źródłowego tychże dokumentów i wskazanie możliwości ich wykorzystania dla szeroko pojętych badań nad historią książki i bibliotek w XIX i XX w., w oparciu o akta z terenu Królestwa Polskiego. W artykule zwrócono również uwagę na trudności metodyczne związane z korzystaniem z tego typu materiałów źródłowych.
Narastanie księgozbioru Biblioteki Towarzystwa Przyjaciół Nauk w Warszawie (1802-1832)
Authors: Paszkiewicz Urszula
Published: September 2020

W artykule scharakteryzowano dzieje ofiarności dla Biblioteki Towarzystwa Przyjaciół Nauk w Warszawie (TPN). Zbiory TPN, narastające w ciągu 30 lat dzięki darom, zakupom, egzemplarzowi obowiązkowemu oraz wymianie dubletów, defektów i wydawnictw Towarzystwa, osiągnęły przed likwidacją Towarzystwa (1831) pokaźną liczbę 30 000 woluminów. W tekście scharakteryzowane zostały wymienione wyżej kategorie wpływów oraz podano liczne przykłady. Zwrócono uwagę na ofiarność społeczeństwa polskiego na rzecz Towarzystwa, a w celu zilustrowania zamierzeń ofiarodawców zaprezentowano fragmenty niektórych deklaracji darczyńców. Autorka tekstu w oparciu o akta TPN śledzi również kolejnych bibliotekarzy, „dozorców”, kustoszy i inspektorów Biblioteki, ich obowiązki oraz zasługi dla rozwoju i ostatecznego kształtu zbiorów. Co ważne, z zaprezentowanej na łamach artykułu analizy, rysują się dwie najważniejsze koncepcje gromadzenia zbiorów – z jednej strony mamy do czynienia z biblioteką jako warsztatem pracy naukowej, a z drugiej uniwersalnej biblioteki narodowej, skarbnicy piśmiennictwa ojczystego, którą tworzyli ofiarodawcy.
Polskie biblioteki szkolne w okresie międzywojennym. Zarys problematyki
Authors: Drzewiecki Marcin
Published: September 2020

W artykule zaprezentowany został stan bibliotek szkolnych okresu 20-lecia międzywojennego. Biblioteki szkolne po odzyskaniu niepodległości w 1918 r. były w katastrofalnej sytuacji i należało włożyć ogromny wysiłek w celu ich odbudowy. Mimo wielu braków w zakresie merytorycznej i organizacyjnej działalność bibliotek szkół powszechnych i średnich (ogólnokształcących i zawodowych), wkład władz oświatowych i całego społeczeństwa w rozwój księgozbiorów szkolnych był znaczny. Stworzony system oświaty w Polsce dał podwaliny sieci bibliotek szkolnych, które integralnie związane ze szkołą. Kłopoty państwa Polskiego natury finansowej, lokalowej nie sprzyjały rozwojowi bibliotek szkolnych. Materiał źródłowy do problematyki polskich bibliotek szkolnych w okresie międzywojennym jest niewielki.
Sifat Fisika Mekanika Briket Arang dengan Komposisi Jenis Kayu Gerunggang (Cratoxylon arborescens) dan Kayu Tumih (Combretocarpus rotundatus)
Authors: Alpian Alpian , Panjaitan Raynold , Jaya Adi , Yanciluk Yanciluk , Supriyati Wahyu Supriyati , Antang Emmy U.
Published: September 2020

Energy is a major component in human daily life so it is needed in daily activities and production. The main source of energy used today comes from fossils such as petroleum, natural gas and coal which are non-renewable, unsustainable, limited in existence and can damage the environment. One of the more environmentally friendly and renewable energy substitutes is charcoal briquettes. The raw material used for the manufacture of charcoal briquettes is charcoal powder from biomass waste in land clearing in the Village of Kalampangan, Palangka Raya City. The fire burn the Kalampangan urban area in 2015. The burning area makes succession and overgrown of pioneer plants such as Gerunggang and Tumih that cannot use maximum. Both types of wood can be used as material for making charcoal briquettes. The purpose of this study is to determine the physical and mechanical properties of charcoal briquettes produced from biomass waste without burning fuel with several raw material compositions from Gerunggang and Tumih charcoal powders. The charcoal briquettes refer to the Indonesian National Standard (SNI 01-6235-2000) and ESDM Permen No. No. 047 of 2006. The number of treatments was 5 (T100: G0; T25: G75; T50: G50; T75: G25 and T0: G100) of 3 replications. The composition with the most potential test results in accordance with the both of standards that used is the composition of T100: G0 with a lower moisture content of 10.10%, density 0.98 g/cm3, and compressive strength 25.68 kg/cm2.
Struktur Komunitas Arthropoda Nokturnal pada Jagung Manis dan Kacang Panjang Organik dan Konvensional Di Lahan Gambut
Authors: Melhanah Melhanah , Supriati Lilies , Saraswati Dewi
Published: September 2020

Pertanian organik merupakan teknik budidaya pertanian yang berorientasi pada pemanfaatan bahan-bahan alami (lokal) denganmenekankanpada kestabilanlingkungan sedangkan pertanian konvensional merupakan kebiasaan yang dilakukan petani setempat.Indikatorkestabilan pertanianorganik maupun konvensional dapatdiketahuidaridiversitas dankelimpahan arthropoda nokturnal.Penelitian bertujuan untuk mengetahui struktur komunitas arthropoda nokturnal pada jagung manis dan kacang panjang organik dan konvensional di lahan gambut. Penelitian dilaksanakan pada lahan seluas 210 m2, yang dibagi menjadi 12 petak percobaan (luas per petak 12 m2). Lahan tersebut ditanami sayuran jagung manis dan kacang panjang dengan perlakuan organik dan konvensional. Penelitian menggunakan teknik perangkap cahaya (Light Trap)untuk menangkap arthropoda nokturnal. Pengolahan data ditabulasi dengan Microsoft Excel. Pada petak organik dijumpai 8 Ordo dan 25 famili, sedangkan pada petak konvensional dijumpai 7 ordo dan 28 famili. Komposisi peran ekologis arthropodanokturnal yang ditemukanpada petak organik maupun konvensional terdiri dari predator (62,50%), hama (18,54%),serangga berguna lainnya (10,00%) dan parasitoid (8,96%). Diversitas arthropoda nokturnal yang diperoleh pada petak organik kacang panjang berdasarkan indeks diversitas Shannon-Wiener menunjukkan nila tertinggi (H'=2,12), sedangkan petak lainnya menunjukkan nilai H > 1.
Aplikasi Beberapa Pupuk Organik tTerhadap Produksi, Kualitas Buah dDan EfisiensiAgronomi Melon di Tanah Gambut
Authors: Rosawanti Pienyani , Hidayati Nurul , Arfianto Fahruddin , Susilo Djoko Eko Hadi
Published: September 2020

This research aims to know the effect interaction of application of types and different dosage of organic fertilizers on production and fruit quality of melons on peatlands, effect of application of types and different dosage of organic fertilizers on production and fruit quality of melons on peatlands, and the agronomic efficiency of the use of several types and different dosage of organic fertilizers on production of melons on peatlands. This research design was used as a Randomized Block Design (RBD) consists of two factors with 4 replication. The first factor consisted of types of organic fertilizer (P) i.e. chicken manure (PA), guano manure (PG), and cow manure (PS). The second factor consisted of fertilizer dosage (D) i.e. 0 tons ha-1 (without fertilization, called control), D1 = 15 tons ha-1, D2 = 30 tons ha-1 and D3 = 45 tons ha-1. The data obtained by analysis of variance (ANOVA) or F test at a = 5% and 1% levels to determine the effect of treatment was tested further by HSD (honestly significant difference) testat the level of 5%. The result shows that the interaction type of organic fertilizer and the dosage of organic fertilizer treatment significant effect on the weight of the melon. Chicken manure is the best organic fertilizer on the size and quality of the melon. Dosage of 45 tons ha-1 organic fertilizer gave the highest results but it was not significantly different with a dosage of 30 tons ha-1. The use of chicken manure fertilizer of 30 tons ha-1 is more efficient in agronomy in increasing melons yield on peatlands.
PengaruhPenggunaanSubstrat pada Pengomposan Secara Anaerob Menggunakan Tandan Kosong Kelapa Sawit (TKKS) dari Limbah Media Jamur Merang
Authors: Supriyanto Supriyanto
Published: September 2020

The anaerobic decomposition process of organic matter in EFB from straw mushroom media waste with the addition of substrates from manur, sludge, EM4 and POME is an alternative treatment of organic material by producing compost and biogas. This study aims to determine the effect of the use of substrate in the composting process of EFB from the waste media of straw mushrooms and the content of chemical nutrients in compost EFB with anaerobic fermentation. The composting process is carried out by inserting EFB in anaerobic bioreactors and adding substrates containing the starter. During the decomposition process observations were carried out every week and every two weeks. The parameters analyzed are temperature, pH, C/N, available P, K-dd and biogas volume. The results showed that the anaerobic organic matter decomposition process carried out for 8 weeks contained the highest biogas production when treated using a substrate from EM4 with a biogas volume of 10L / day with temperatures reaching 30oC having a pH characteristic of 8.79; Nitrogen 1.04 - 1.68%, C-organic 15.30%, C / N 11.71, P-available 0.69 and K-dd 1.13%.