bluuebunny/crossref_metadata_2025 huggingface dataset:
Core self-evaluations and work-family enrichment: the mediating role of distributive justice perceptions
Authors: Omar Alicia Graciela , Salessi Solana , Vaamonde Juan Diego , Urteaga Florencia
Published: September 2018

The aim of this study was twofold: to analyze the possible relationships between employees’ personality (as measured by core self-evaluations or CSE) and their feelings of work-family enrichment (WFE); and to examine whether distributivejustice perceptions act as a mediator in such relationships. A cross-sectional survey was conducted to collect data from 386 employees in public and private organizations located in Argentina. Structural equation modelling wasused to examine two integrative models that combined CSE, distributive justice, and WFE. Results reveal a good fit of the full mediation model (S-Bχ2 = 3.18, GFI= .99, CFI= .99, RMSEA= .03), in which distributive justice perceptions fully mediated the relations between CSE and WFE (γ = .13, IC= [-.03; .27]) and between CSE and FEW (γ = .09, IC= [-.08; .25]). Findings are discussed in the light of its theoretical and practical implications. The study provides valuable information for organizational authorities and HR managers to focus their efforts on both the development of CSE traits and the creation of fair and equitable work environments.
Diseño y validación de un instrumento para medir la autoeficacia para lactar de mujeres embarazadas mexicanas
Authors: Juárez Castelán Mariel Areli , Rojas Russell Mario Enrique , Serrano Alvarado Karina , Gómez García José Alberto , Huerta Ibáñez Alondra , Ramírez Aguilar Martín
Published: September 2018

La lactancia materna exclusiva (LME) es una de las conductas saludables con mayor valor protector para la salud del niño y de la madre. La autoeficacia es un predictor de diferentes conductas saludables. El objetivo de esta investigaciónfue diseñar y validar un instrumento para medir la autoeficacia para lactar en mujeres embarazadas. Se realizó un estudio instrumental con usuarias de dos centros de salud de primer nivel de atención, seleccionadas a través de unmuestreo no probabilístico. Se excluyeron aquellas mujeres que fueran analfabetas o tuvieran alguna condición médica que contraindicara la LME. Se utilizaron análisis descriptivos, bivariados y multivariados para obtener las propiedades psicométricas del instrumento. Participaron 369 mujeres. A través de un análisis factorial exploratorio se obtuvo una estructura unidimensional de 15 reactivos que explicó el 83% de la varianza total del instrumento (alfa de Cronbach = .93). Además, la autoeficacia para lactar se asoció (p <.05) con la intención para lactar, la edad y la escolaridad. El instrumento de autoeficacia para lactar obtenido mostró propiedades psicométricas adecuadas por lo que puede ser útil para identificar a las mujeres que están en riesgo de no iniciar la LME desde el nacimiento de su hijo, además, parece ser el primer instrumento de autoeficacia para lactar en México.
Actitudes hacia la labor profesional del psicólogo en Bogotá: un estudio descriptivo comparativo según el tiempo en terapia
Authors: Riveros-Munévar Fernando , Salamanca-Chacón Sergio-Andrés , Paredes-Estevez Sandra , Carvajal-Ovalle Diego , Umbarila-Contreras Lina-Isabel , Hernández-Mateus Vanessa , Gómez-Arbeláez Esteban , Candamil-Barahona Lina , Herrera-Moreno Daniela , Cueva-Nuñez María-Angélica , Acevedo María-Camila , Venegas-Muñóz Francisco
Published: September 2018

La presente investigación tuvo como objetivo determinar la actitud hacia la labor profesional del psicólogo en una muestra bogotana, según los tiempos de permanencia en terapia psicológica. Para ello se llevó a cabo un estudio detipo descriptivo con método de comparación de grupos. Se aplicó la escala de “actitudes” frente a la labor profesional del psicólogo a una muestra de 540 personas de nacionalidad colombiana, residentes en Bogotá. Se encontró unaactitud neutra hacia la labor profesional del psicólogo, destacando una mejor actitud por parte de las mujeres en comparación con los hombres, asimismo, una actitud más favorable en los participantes que han asistido mayor tiempo a terapia psicológica, actitud que empeora tras los 6 meses.
Interpretación del WISC-IV: Índices alternativos para la evaluación de las habilidades cristalizadas
Authors: Labin Agustina , Brenlla María Elena , Taborda Ruth Alejandra
Published: September 2018

En este artículo se presentan dos índices alternativos para la evaluación e interpretación de las habilidades cristalizadas a partir del WISC-IV versión argentina: el índice conocimiento léxico (Gc-VL) y el índice información general(Gc-K0). Para ello se trabajó con una muestra de 1036 casos. El análisis factorial confirmatorio revela altos índices que validan las nuevas puntuaciones. El análisis de fiabilidad resultó satisfactorio. A su vez, los resultados revelan correlaciones entre el índice comprensión verbal (ICV) del WISC-IV y los nuevos índices alternativos. Por último, se encontraron diferencias en las puntuaciones Gc-VL y Gc-K0 y el clima educativo del hogar. Si bien el WISC-IV propone cuatro índices compuestos y una medida global de la inteligencia (ICV, IRP, IMO, IVP y CIT), siguiendo los aportes de la teoría de Cattell-Horn-Carroll (CHC), se recomienda implementar estas puntuaciones alternativas en un contexto normativo e ipsativo, que favorezcan y enriquezcan el estudio de las capacidades cristalizadas del examinado.
Removal of organic matter from wastewater using M/Al-pillared clays (M = Fe or Mn) as coagulants
Authors: Gouttal Khadidja , Benghalem Abderrezak , Mimanne Goussem , Karim Benhabib
Published: September 2018

This work is about organic matter removal from Sidi Bel Abbes wastewater plant (Algeria) by coagulation on pillared clays (PILCs) under pH and PZC (point of zero charge), conditions. Two pillared clays, M/Al-PILCs (M = Fe or Mn), were synthesized, characterized, and studied as coagulants. Results showed that Fe/Al-pillared clay exhibits superior efficiency, with 18% higher removal rate than the common coagulants alum (AS) and ferric chloride (FCl), and that sedimentation time has positive effect on turbidity removal, with 95.85% removal rate during 30 min. Moreover PILCs will not cause pH go down too low, which is an advantage for achieving the best overall treatment. The IR and UV bands' reduction reveals the breakdown fragmentation of high molecular weight organic substances into smaller units. The highest total organic carbon (supercritical water oxidation analysis) and chemical oxygen demand adsorption capacities (48.52% and 61.85% respectively) obtained for Fe/Al-PILC can be related to increased basal spacing between adjacent layers, creating favorable adsorption sites in the microporous system. The suggested adsorption mechanism involves strong interactions between pollutants and PILCs leading to PILC–pollutant complex formation.
Violencia obstétrica y morbilidad materna: Sucesos de violencia de género
Authors: Chávez Courtois Mayra Lilia , Sánchez Maya Norma Angélica
Published: September 2018

El artículo se centra en la relación de la práctica de violencia obstétrica con la morbilidad materna y en la manera en que ello contribuye a la violencia de género. Se aplicaron entrevistas semiestructuradas, se hicieron notas y observación de campo sobre experiencias de atención de parto en mujeres indígenas. Entre los resultados obtenidos, se identifica la realización de prácticas médicas de rutina innecesarias durante la atención del parto, con lo cual se vulnera a la mujer y se contribuye a la violencia de género. Relacionar las experiencias de violencia obstétrica y morbilidad materna permite explorar otras expresiones de la violencia de género. La originalidad del estudio radica en que es ineludible considerar la violencia obstétrica como un tipo de violencia hacia la mujer que transgrede su integridad durante el embarazo y el parto. En conclusión, la violencia obstétrica es una expresión de la violencia de género que no contribuye en la calidad de la salud materna.
β-caryophyllene Delivery Systems: Enhancing the Oral Pharmacokinetic and Stability
Authors: Santos Pauline S. , Oliveira Thaisa C. , R. Júnior Luís Mário , Figueiras Ana , Nunes Lívio C.C.
Published: September 2018

Background:

The β-caryophyllene (BCP), a phytocannabinoid present in various essential oils, demonstrated
selective action on the CB2 endocannabinoid receptor and attracted considerable attention because of its
several pharmacological activities. Despite this recognized potential, this hydrophobic compound is a volatile and
acid-sensitive sesquiterpene that readily oxidizes when exposed to air, and has low bioavailability in oral formulations.
Thus, the development of formulations that guarantee its stability and increase its bioavailability is a challenge
for its use in the pharmaceutical field.

Methods:

The present review brings for the first time a comprehensive overview of the controlled and vectorized
release formulations tested for BCP administration. Among these, we have addressed nanoemulsions, inclusion
complexes with cyclodextrins, liposomes, wound dressings, nanocomposites and nanoparticles. A literature
search was performed on Pubmed, Web of Science and Science direct, and patents documents were also searched
on European Patent Office, World Intellectual Property Organization and Brazilian National Institute of Industrial
Property.

Results:

The systems presented here may represent an interesting approach to overcome the limitations already
mentioned for this terpene. These systems proved to be promising for improving solubility, stability and controlled
release of this pharmacological relevant sesquiterpene. In the industrial field, some companies have filed
patent applications for the commercial use of the BCP, however, the use of pharmaceutical formulations still
appeared moderate.

Conclusion:

This prospective study evidenced the new perspectives related to BCP vectorization systems in the
pharmaceutical and industrial marketing field and may serve as a basis for further research and pharmaceutical
use of this powerful cannabinoid.
Serum Interleukin-33 as a Biomarker in Predicting Neonatal Sepsis in Premature Infants
Authors: Halil Halit , Tayman Cuneyt , Buyuktiryaki Mehmet , Okur Nilufer , Cakır Ufuk , Serkant Utku
Published: September 2018

Background:

Neonatal sepsis is considered as the most frequent cause of death in
newborns. Early diagnosis is important to reduce mortality and morbidity. The rapid progression of
the disease requires proper use of biomarkers specific for prompt diagnosis and intervention.

Objective:

We aimed to evaluate the benefit of interleukin-33 serum levels in the diagnosis and
treatment of neonatal sepsis.

Method:

We included 51 infants with neonatal sepsis as the main study group and 50 neonates
without sepsis as the control group. Serum levels of interleukin-6, interleukin-33 and C-reactive
protein were measured on the 1st, 3rd and 7th days of sepsis in the study group and on the 3rd
postpartum day in the control group, respectively.

Results:

Serum levels of interleukin-6, interleukin-33 and C-reactive protein were significantly higher
in the first day of sepsis. Serum levels of interleukin-6, interleukin-33 and C-reactive protein decreased
significantly on the 3rd and the 7th days of antibiotic treatment. We found a significant relationship
between interleukin-33 and C-reactive protein and between interleukin-6 and C-reactive protein on
the first day of sepsis.

Conclusion:

Serum interleukin-33 level is up-regulated in neonatal sepsis, which might be used as a
novel diagnostic marker and also a useful tool to predict prognosis in early neonatal sepsis.
Event-related Potentials Improve the Efficiency of Cerebrospinal Fluid Biomarkers for Differential Diagnosis of Alzheimer’s Disease
Authors: Leko Mirjana Babić , Skorić Magdalena Krbot , Klepac Nataša , Borovečki Fran , Horvat Lea Langer , Vogrinc Željka , Sonicki Zdenko , Hof Patrick R. , Šimić Goran
Published: September 2018

Introduction:

The pathological process of Alzheimer's disease (AD) in the brain likely begins
20-30 years earlier than the emergence of its first clinical symptoms and symptoms of AD often overlap
with the symptoms of other primary causes of dementia. Therefore, it is crucially important to improve
early and differential diagnosis of the disease. Event-related potentials (ERP) measured non-invasively
by electroencephalography have shown diagnostic potential in AD.

Aims:

The aim of this study was to compare the efficiency of P300 and N200 potentials and reaction
time (RT) with commonly used protein biomarkers measured in the cerebrospinal fluid (CSF), including
amyloid β peptide (β1-42), total tau (t-tau), tau protein phosphorylated at threonine 181 (p-tau181), tau
protein phosphorylated at serine 199 (p-tau199), tau protein phosphorylated at threonine 231 (p-tau231),
and visinin-like protein 1 (VILIP-1) in differential diagnosis of AD in mild cognitive impairment (MCI)
and AD patients.

Subjects:

The study involved 49 AD patients, 28 patients with MCI, 4 healthy control subjects and 16
patients with other primary causes of dementia.

Results:

ERP (P300RT, N200RT, P300 counting and N200 counting) showed a moderate to strong correlation
with protein CSF biomarkers. We confirmed previous observations of moderate to strong correlation
between ERP and neuropsychological testing and showed that P300 latency and RT are shortened
in AD patients on therapy with acetylcholinesterase inhibitors. Using ERP and RT, a predictive model
for determination of AD likelihood in MCI patients was developed, detecting 56.3% of MCI patients
with high risk for development of AD in our cohort. MCI patients with pathological levels of Aβ1-42 had
prolonged P300 latency, indicating that a combination of ERP and CSF protein biomarkers could improve
the differential diagnosis of AD in MCI patients. Additionally, the results suggested the potential
of P300 latency in differentiating AD and FTD patients.

Conclusion:

Our data provide possible solutions for improvement of differential diagnosis of AD, and
reveal that the diagnostic efficiency of CSF protein biomarkers t-tau, p-tau181, p-tau199, p-tau231 and
VILIP-1 could be improved by adding ERP in clinical practice.
Ligand-Based Drug Design: Synthesis and Biological Evaluation of Substituted Benzoin Derivatives as Potential Antitumor Agents
Authors: Sabbah Dima A. , Ibrahim Ameerah H. , Talib Wamidh H. , Alqaisi Khalid M. , Sweidan Kamal , Bardaweel Sanaa K. , Sheikha Ghassan A. , Zhong Haizhen A. , Al-Shalabi Eveen , Khalaf Reema A. , Mubarak Mohammad S.
Published: September 2018

Background:

Phosphoinositide 3-kinase α (PI3Kα) has emerged as a promising target
for anticancer drug design.

Objectives:

Target compounds were designed to investigate the effect of the p-OCH3 motifs on
ligand/PI3Kα complex interaction and antiproliferative activity.

Methods:

Synthesis of the proposed compounds, biological examination tests against human colon
adenocarcinoma (HCT-116), breast adenocarcinoma (MCF-7), and breast carcinoma (T47D) cell
lines, along with Glide docking studies.

Results:

A series of 1,2-bis(4-methoxyphenyl)-2-oxoethyl benzoates was synthesized and characterized
by means of FT-IR, 1H and 13C NMR, and by elemental analysis. Biological investigation
demonstrated that the newly synthesized compounds exhibit antiproliferative activity in human colon
adenocarcinoma (HCT-116), breast adenocarcinoma (MCF-7), and breast carcinoma (T47D)
cell lines possibly via inhibition of PI3Kα and estrogen receptor alpha (ERα). Additionally, results
revealed that these compounds exert selective inhibitory activity, induce apoptosis, and suppress
VEGF production. Compound 3c exhibited promising antiproliferative activity in HCT-116 interrogating
that hydrogen bond-acceptor mediates ligand/PI3Kα complex formation on m- position.
Compounds 3e and 3i displayed high inhibitory activity in MCF-7 and T47D implying a wide cleft
discloses the o-attachment. Furthermore, compound 3g exerted selective inhibitory activity against
T47D. Glide docking studies against PI3Kα and ERα demonstrated that the series accommodate
binding to PI3Kα and/or ERα.

Conclusion:

The series exhibited a potential antitumor activity in human carcinoma cell lines encoding
PI3Kα and/or ERα.
Silimarin and Cancer
Authors: Liakopoulou Christina , Kazazis Christos , Vallianou Natalia G.
Published: September 2018

Background:

Silimarin is the dry mixture of a whole family of natural substances, extracted after the
addition of ethanol, methanol, and acetone. Silimarin consists mainly of silibin A and silibin B, as well as other less
important compounds.

Methods:

Silimarin has been demonstrated to “inhibit cell proliferation and to induce apoptosis, while also having
anti-angiogenic properties.” The induction of apoptosis in cancer cells has been mediated by the involvement of ER
stress.

Results:

Silibinin has the potential to operate as a STAT3-targeted inhibitor as well as an inhibitor of the upregulation
of the immune checkpoint regulator PD-L1 and also EMT regulators, thus being a promising adjuvant in
NSCLC. It has also been documented to suppress cancer cells be means of down- regulating actin cytoskeleton and
PI3K / Akt molecular pathways. Several studies have demonstrated that silibinin exerts its protective potential partly
through interacting with the tumor suppressor gene p53.

Conclusions:

It is noteworthy that research has been carried out on the enhancement of silimarin’s bioavailability,
especially by the preparation of specific nanoformulas, and its probable additional use together with the chemotherapeutic
regimens in the near future.
An App That Incorporates Gamification, Mini-Games, and Social Connection to Improve Men's Mental Health and Well-Being (MindMax): Participatory Design Process
Authors: Cheng Vanessa Wan Sze , Davenport Tracey A , Johnson Daniel , Vella Kellie , Mitchell Jo , Hickie Ian B
Published: September 2018

Background

Men have different mental health needs as compared with women, and women make up the primary audience of most digital mental health interventions. An Australian football-themed (specifically Australian Football League, AFL) app named MindMax incorporating psychoeducation, gamification, mini-games, and social connection was developed in an effort to address this issue.

Objective

The aim of this study was to identify the best way to structure and present MindMax, an app that aims to deliver psychoeducational modules, and create a Web-based community centering on well-being, AFL, and video games for men aged 16 to 35 years who are interested in AFL or video games.

Methods

We conducted 6 participatory design (PD) workshops with people aged 16 to 35 years in 3 cities in Australia, to identify the best way to present MindMax, and contracted a digital development agency to develop MindMax. We then iteratively tested MindMax prototypes with 15 user experience testing interviews across 3 separate time points: 2 before app launch and 1 after app launch.

Results

A total of 40 individuals (25 male and 15 female) participated in the PD workshops, and a total of 15 individuals (10 male and 5 female) participated in user experience interviews. Broadly, participants expressed a preference for activities requiring active engagement that practiced useful skills. They were also sensitive to how content was presented and wanted the ability to customize their own app experience. Although participants agreed that social motivations were important for engagement with an app, they recommended not to mimic existing social networks.

Conclusions

In basing itself strongly within the AFL subculture and by incorporating gamification as well as mini-games, MindMax aimed to tackle mental health help-seeking barriers for people who enjoy AFL or video games, with a particular emphasis on men, and to provide psychoeducation on strategies to increase mental health and well-being. If MindMax is successful, this would indicate that generalizing this approach to other traditional sporting codes and even competitive video gaming leagues (esports) would be fruitful.
Teenage Pregnancy and the Quest for a Place for Pregnant Girls: A Study on the Rule of Pregnant Student Expulsion in Yogyakarta, Indonesia
Authors: Asriani Desintha Dwi
Published: September 2018

This study attempts to reveal the problem that lies behind the discourse of teenage pregnancy in relation to the politics of place. It primarily derives from the tendency of a number of schools in Indonesia to expel pregnant students. The quest of a “place” simply refers to public spaces that are more contested for pregnant girls. However, the term place is not limited to its literal definition of physical location. Rather, it involves more complex dimensions such as gender dichotomy, body politics, and the politics of modernity. By examining interview data acquired from several school teachers and girls, this research will contextualize such case within the paradoxical relation between the conception of modernity in delivering the idea of progress and participation, and the extent to which the maternal body is mobilized within the discourse of gender dichotomy in public.
The Role of Commissioners in Health Service Provision: Lessons Learned from Primary Care Trusts (PCTs) England
Authors: Nurhayati Pradhikna Yunik , Allen Barbara
Published: September 2018

It is the government’s responsibility to reach policy outcomes. Since the needs of citizen vary, the government needs to improve the way it delivers public services. Monopolistic provision of public service by government becomes inadequate to fulfill the needs of the community. One of the ways pursued by the government is working with the third sector, through procurement and commissioning. National Health Services (NHS) in the UK is one of the examples of commissioning in the healthcare service. The role of commissioning has been done by Primary Care Trusts (PCTs) from 2002 until 2014. Since commissioning became the center of public health provision, the role of commissioners has become pivotal. Using systematic review, this study aims to examine the role of commissioners in health service provision in England. It can be concluded that commissioners (PCT) play an essential role in identifying the needs of the community. This early stage of planning relied on the knowledge, skills, and capacity of commissioners. Unfortunately, not every commissioner has the capability to perform the commissioning process. Therefore, a partnership with other stakeholders is critical to overcoming the limitations of resources, including the capacity, time, and funding. The other findings suggest that national policy by the central government has contributed to the success of commissioning. Results revealed that national targets often prevented commissioners from reaching the local targets, especially when resources were insuﬃcient.
Representasi Konflik Politik 1965 dalam Cerpen Susuk Kekebalan karya Han Gagas
Authors: Sulistyo Hary
Published: September 2018

Cerpen Susuk Kekebalankarya Han Gagas merupakan salah satu cerpen dalam buku kumpulan cerpen Catatan Orang Gila. Cerpen tersebut menceritakankonflik politik 1965 dengan setingcerita di Ponorogo, Jawa Timur. Seperti halnya peristiwa bersejarah tersebut, Han Gagas menarasikan keterlibatan negara yang terepresentasikan dalam bentuk aparatusnya yaitutentarayang dibantu oleh masyarakat untuk menyerang tokohyang dianggap simpatisan Lekra, yaitu Warok Wulunggeni beserta pengikutnya sebagai representasi ideologi resisten terhadap hegemoni negara. Persoalan yang perlu dicermati berkaitan dengan bentuk representasi ideologi dominan sebagai cerminan hegemoni negara dalam cerpen, bentuk resistensi idologi resisten terhadap hegemoni negara dalam cerpen, danbentuk dominasi negara terhadap ideologi resisten yang tercermin dalam cerpen. Teori yang digunakan dalam tulisan ini adalah Negara dan Hegemoni Antonio Gramsci yang terdiri dari Hegemoni, Resistensi, Konsensus, dan Dominasi. Metode analisis tulisan ini dengan melihat persoalan tekstual dalam cerpen dan mengoperasikan vitur-vitur teori Antonio Gramsci yang berkaitan dengan perebutan momentumdan kekuasaan khususnya pada era 1965. Analisis tulisan ini menghasilkan; 1. Ideologi dominan sebagai representasi hegemoni negara dalam perebutan momentum yang terepresentasikan dalam cerpen tersebut adalah kelompok masyarakat anti-PKI yang dipimpin oleh Warok Wirodigdo dan seorang bapak bersenapan; 2. Bentuk resistensi ideologiresisten yang tercermin dalam cerpen tersebut yaitu perlawanan secara fisik oleh kelompok Warok Wulunggeni terhadap representasi negara yaitu massa yang dipimpin Warok Wirodigdo dan bapak bersenapan; 3. Dominasi negara terhadap kelompok resisten yaitupenumpasankelompok Warok Wulunggenisebagai tokoh Lekra. Kata kunci: susuk kekebalan, resistensi dan dominasi negara, konflik politik 1965
PENGEMBANGAN ALAT UKUR EVALUASI DAN PERANCANGAN PRODUK KURSI RODA
Authors: Jatmiko Hapsoro Agung , Dharmastiti Rini
Published: September 2018

A wheelchair is one of the mobility aids for people with disabilities. Availability of wheelchair type is very decisive for users based on the limitations they have. The problem felt by users in Indonesia today, especially in Yogyakarta, is that users have not got the right kind of wheelchairs with the needs, with certain limitations. This study aims to develop a wheelchair evaluation and to know the user's expectation of the wheelchair design. This study shows that there are problems due to the users not getting a wheelchair that suits their needs. The wheelchair design that the users want are the wheelchair with 3 wheels and have new feature.
SUBTITUSI SAMPAH ORGANIK DAN TANAH MEDITERAN MENJADI SEMEN ALTERNATIF SELAIN SEMEN PORTLAND
Authors: Syarif Muhammad , Sampebulu Victor , Tjaronge Muh. Wihardi , Junus Nasruddin
Published: September 2018

The results of this study aims to save the environment, through the discovery of new alternative materials by recycling organic waste, household waste, coal waste (fly ash and bottom ash), and substitution of mediteran land and clay into organic cement that is alternative cement in addition portland cement. Test results of organic cement chemical compound using laboratory testing method refers to ASTM C-114 and SNI 15-2049-2004. An indication of resembling a portland cement chemical compound is CaO of 65.36%, SiO₂ 18.84%, AlOO₃ 6.33%, Fe₂O₃ 2.29%, SO₃ 3.64%, MgO 1.35%, C₃S 66 , 72%, C₂S 3.98%, C₃A 12.9%, and C4Af 6.97%. Test methods of physical properties include testing of baseline time and end time and normal consistency value to organic cement, this test refers to ASTM C 191-04 and C 191-08 and ASTM C 187-04. Fineness of organic cement grains that passed in the mesh 200 mesh as much as 56%, more subtle than portland cement is 52%. The solid weight of organic cement is 1200 kg/m3, lighter than portland cement which reaches 1250 kg/m3. The initial setting time for organic cement was 105 minutes, longer than portland cement at 90 minutes. For the organic cement final time at 225 minutes, it was above the end time of portland cement at 180 minutes.
Analysts' Information Acquisition and Stock Price Synchronicity: A Regulatory Perspective from China
Authors: Jiang Haiyan , Zhou Donghua , Zhang Joseph H.
Published: September 2018

SYNOPSIS

Against the backdrop of the Chinese Directive 40 (China's Reg FD) issued in 2007 as an attempt to curb insider trading and to level the information playing field, this study investigates whether analysts' private information acquisition influences the extent to which firm-specific information is impounded into stock prices, i.e., stock price synchronicity, and how the restrictions on selective disclosures imposed by Directive 40 have shaped the relationship between analyst information acquisition and synchronicity. Using a pre-Directive 40 sample, we show that synchronicity is negatively related to analysts' private information acquisition, which provides support for the “information advantage” argument of analysts' information production. However, the ability of analysts' private information acquisition in improving firm-specific information incorporated into stock price is mitigated post-Directive 40 due to a restriction on selective disclosures and/or private communication. Moreover, we find that this regulatory impact varies for firms being followed by affiliated analysts versus non-affiliated analysts.

JEL Classifications: G14; G15; G17; G18.
Auditors' Communications with Audit Committees: The Influence of the Audit Committee's Oversight Approach
Authors: Fiolleau Krista , Hoang Kris , Pomeroy Bradley
Published: September 2018

Policymakers have identified effective communications between the auditor and the audit committee (AC) as an indicator of a quality audit, but little is known about the factors auditors consider when deciding what to communicate about significant accounting issues. We propose auditors use the AC's oversight approach as a cue for the level of detail in their communications that is necessary to satisfy the AC's preferences for auditors' insights on issues that were resolved with management. In our experiment, auditors resolved an inventory obsolescence issue with a hypothetical CFO, and then wrote a communication about it for the AC. We manipulate the AC's preference for getting involved in the issue resolution process and its reputation for asking questions. Our results, supplemented by findings from audit partner interviews, suggest auditors tailor their communications to the AC's oversight approach, the AC's industry and accounting knowledge, and the AC chair's preferred communication style.

Data Availability: Contact the authors.
Bokrecension: Strengthening Teaching and Learning in Research Universities. Strategies and Initiatives for Institutional Change
Authors: Axelsson Svante
Published: September 2018

Svante Axelsson om Bjørn Stensaker, Graham T. Bilbow, Lori Breslow & Rob van der Vaart (Eds.). StrengtheningTeaching and Learning in Research Universities. Strategies and Initiatives for Institutional Change.Palgrave Macmillan, 2017, 228 p.
KONTEKS RELIGIO-POLITIK PERKEMBANGAN SUFISME: Telaah Konsep Mahabbah dan Ma’rifah
Authors: Jinan Mutohharun
Published: September 2018

This paper discusses the essence of the concepts of Sufism (Sufism) mahabbah and ma'rifah and how and in what context the concepts of Sufism are formulated. These two concepts are the teachings of Sufism from three Sufi figures namely Rabi'ah al-Adawiyah, Zunnun al-Mishri and al-Gahazali. Can be concluded that the three Sufis in laying the foundations of Sufism teachings did not escape from the context of his time. Rabi'a and Zunnun both live in situations where people are busy taking care of the exoteric things that do not penetrate to the esoteric dimensions of Islam. Both have shifted from the paradigm of worship held by Muslims of his day, from fear of God to love to God. While al-Ghazali lives in a state of contradiction between various Islamic groups. Mahabbah and ma'rifah taught by the three Sufis is the implementation of piety in the process of truth-seeking encompassing plurality and cosmopolitanism in a phase of civilization.Makalah ini membahas hakikat konsep-konsep tasawuf (sufisme) mahabbah dan ma’rifah dan bagaimana dan dalam konteks apa konsep-konsep tasawuf itu dirumuskan. Kedua konsep ini merupaka ajaran tasawuf dari tiga tokoh sufi yaitu Rabi’ah al-Adawiyah, Zunnun al-Mishri dan al-Gahazali. Dapat disimpulkan bahwa ketiga sufi dalam meletakkan dasar-dasar ajaran tasawuf tidak luput dari konteks zamannya. Rabi’ah dan Zunnun sama-sama hidup dalam situasi dimana umat sibuk mengurus hal-hal yang sifatnya eksoteris yang tidak menembus pada dimensi esoteris Islam. Keduanya telah menggeser dari paradigma ibadah yang dipegangi oleh umat Islam di zamannya, dari takut kepada Allah menjadi cinta kepada Allah. Sedangkan al-Ghazali hidup dalam keadaan pertentangan antar berbagai golongan Islam. Mahabbah dan ma’rifah yang diajarkan oleh ketiga sufi merupakan implementasi kesalehan dalam proses pencarian kebenaran yang dilingkupi pluralitas dan kosmopolitanisme dalam suatu fase peradaban.
A Three-Level Inverter Based Static Compensator (STATCOM)
Authors: Onah Aniagboso John
Published: September 2018

In an electric utility network, the occurrence of voltage depression on transmission and distribution lines is due to the flow of reactive power. It is desirable to regulate the voltage within a narrow range of its nominal value (±5% range around their nominal values). Thus, reactive power control is necessary so as to control dynamic voltage swings under various system conditions and thereby improve the power system transmission and distribution performance. A fast acting Static Compensator (STATCOM) is required to produce or absorb reactive power so as to provide the necessary reactive power balance in transmission and distribution system. Modern reactive power compensation employs voltage source inverter (VSI). In this paper, a static compensator based on three-phase, three-level voltage source inverter (VSI) was investigated. The paper is intended to show how this STATCOM can be used to improve the ac system power factor and voltage regulation, and hence improve the performance of the transmission and distribution lines. Application of this STATCOM to a transmission system achieved unity power factor, thereby reducing the active power loss by 38.7% and consequently decreasing power costs, as well as increasing transmission system capacity. The presence of the STATCOM also reduced the reactive power flowing on the line from 2.79 MVAr to 1745VAr - resulting in optimum voltage regulation at the load bus. The reactive elements (L and C) are small in size.
Implementation of Microcontroller Based Distance Relay
Authors: Isa Abubakar , Verma H. K. , Shuaibu Abdurrahman , Saleh Mubarak Auwal
Published: September 2018

In this project microcontroller 8051 was used for comparisons between set Impedance and calculated Impedance for based distance relay of the protection of transmission line, based on that trip signal is send to circuit breaker. The Hardware consisted of main CT and VT, auxiliary VT and CT ,BLF ,sample and hold(S/H) circuit ,multiplexer ,ADC and microcontroller 8051.In which the main CT and VT step down the current and voltage respectably passed to auxiliary CT and VT for protecting the remaining components and convert the current into voltage in the output of auxiliary CT, then passed it to band limit filter to limit the frequency for samplingÂ  hold after sampling and hold circuit the signal is passed to multiplexer then to the ADC for analogue to digital conversion, after the conversion the digital signals is passed to the 8051 microcontroller to processing the signals that is calculating the average, impedance and compare it with the setÂ  impedance (store impedance) to generate trip signal when calculate impedance is less than or equal to set impedance. The trip signal is send to circuit breaker for tripping the first zone if condition is no it go to zone second zone and check the condition if yes trip is send to circuit breaker if no it go to third zone if yes trip and jump to initial point if not it go back to initial point. The relay software has been developed and simulated using Proteus software in which signal generator, ADC, microcontroller and LEDs are used for the purpose of checking fault in transmission.
Design and Simulation of Three Level Neutral Point Clamped Inverter Fed Induction Motor Drive
Authors: Balasubbareddy M. , KavyaDurga K. Sri
Published: September 2018

The objective of the project is to obtain some proficiency in building converters to control speed of medium voltage induction motors. The thesis covers summary of literature surveyed, selection of a topology of converter for design, design of a 3-Level NPC inverter power circuit and FOC parameters. The entire system has been simulated using PSIM software for verification of design. Results obtained are presented. Results prove that the understanding of the student (author) is satisfactory. A low voltage 10kW squirrel cage induction motor has been chosen as the load to converter for design and simulation. Future work may be design of complete control circuits implementing FOC, building complete hardware and testing the small motor chosen.
Over Current Protection Relay using Arduino Uno for Future Renewable Electric Energy Delivery and Management (FREEDM) System
Authors: Kotb Mohamed Fawzi , El-Saadawi Magdi , El-Desouky Eman H.
Published: September 2018

The FREEDM (Future Renewable Electric Energy Delivery and Management) system is a smart grid that enables wide integration between the Distributed Renewable Energy Resources (DRER) and Distributed Energy Storage Devices (DESD) with the conventional distribution system. This paper presents the design and implementation of an Arduino Uno microcontroller-based overcurrent relay with different characteristics (inverse, very inverse and extremely inverse) for FREEDM systems. An open source model with simple utilization of both hardware and software is created. A practical printed circuit board is designed with the required inputs and outputs to monitor and protect the branch connecting solid state transformer (SST) to the closed loop zones in the FREEDM system. A special program is designed using Proteus software package and easily integrated to the hardware card. To validate the proposed relay, the inverse, very inverse and extremely inverse overcurrent relay characteristics are tested using the proposed system simulator and compared with the characteristic recorded by the well-known IEC 60255-151standard. In order to guarantee the effectiveness of the system, a practical circuit including the proposed relay is formed, connected to a small load (motor) and normally inverse relay characteristic is tested. The proposed protection scheme proves high performance and accurate results.
Design, Description, Implementation and Assessment of a Multimedia Application with Simulations for Teaching Models of Light
Authors: Voudoukis Nikolaos
Published: September 2018

The purpose of this study is to describe the use of software and simulations at a didactical approach-teaching method about models of light to upper secondary education students and non major science university students. Light and models of light, is a subject proving too difficult to be taught. A research - didactical intervention was conducted to secondary education students. In order to support the intervention, educational material was developed including the subjects: Propagation, Reflection, Interference – Diffraction, Refraction, Absorption, Analysis – Synthesis and Polarization of light. The didactical approach, which is a proposal for scientific to educational models transformation concerning light, was applied during the school years 2015-2017 to one hundred forty three (143) students of upper secondary education in Athens, Greece. We present the educational software and the assessment/evaluation of the software. Results and general conclusions from the statistical analysis of this computer supported didactical attempt are also presented.
Analysis of Thermal Comfort in an Office Space Using Two Typical Ventilation Modes.
Authors: Okafor Chinedum Vincent , Okolie Kevin Chuks , Ogunoh Peter , Oguike Udeagwu Hyginus
Published: September 2018

This study carried out a comparative study to evaluate the air-conditioning performance of an office space under two typical ventilation modes (displacement and mixing ventilation system). A wall supply diffuser is located at the ceiling height for the mixing ventilation case, whereas, the supply diffuser is at the floor level for the displacement ventilation case. In both cases, the exhaust grill is located at the ceiling. From the result of the simulation, the researchers observed that the displacement ventilation system could have a higher risk of discomfort relating to vertical temperature gradient than when compared to the mixing ventilation case. More so, the simulation result indicates that the temperature distribution in an office building is a function of the type of ventilation system adopted and marginally affected by the diffuser arrangement.
Effects of Liquid Velocity on Pressure Gradient, Slip and Interfacial Friction Factor in Annular Flow in Horizontal Pipe
Authors: Osokogwu Uche
Published: September 2018

Experimental investigations on annular flow behaviour in two-phase (air/water) flow in horizontal pipe were conducted using 2-inch (0.0504m) with a total length of 28.68m closed loop system. The emphasis from the experiments were on pressure gradient, slip and interfacial friction factor in annular flow. For interfacial friction factor, the entrainment, gas quality, the droplets and slip mixture density values were obtained through the experimental results which were substituted to determine it. In all, effects of liquid velocity were felt, as increase in superficial liquid velocity, increases the interfacial friction factor and pressure gradient in annular flow in horizontal pipes. More so, increase in superficial gas velocity, reduces the interfacial friction factor. Thus, interfacial friction factor decreases with increases in superficial gas velocity, while the pressure gradient increases with increase in superficial liquid velocity. The lower the superficial liquid velocity, the higher the slip but the lower the pressure gradient. Likewise, the lower the superficial liquid velocity, the more ripple waves obtained while the higher the superficial liquid velocity, the more disturbance waves in annular flow in horizontal pipe from the experiments.
Assessment of Lane-Sharing Manoeuvrability and Risk Exposure Effect on Motorcycling in Nigeria
Authors: Ibitoye Biliyamin Adeoye , Odeyemi Samson , Salman As-Shuara , Daudu Mariam
Published: September 2018

Motorcycle is becoming a very important mode of transport in most developing countries like Nigeria as a result of their easy accessibility to most local communities. However; due to their riding habits, motorcyclists now constitute larger percentage of fatal accidents on roads. This study is aimed at assessing the behaviour of motorcyclists on share lane with other motorised vehicles with the objective of determining the risks due to their exposure to crashes. Ilorin in Kwara State was selected as the study area, as most communities in this town are not accessible to good public transport system, thereby leaving commuters to depend solely on use of motorcycles for their daily trips. Field survey and questionnaire were used to collect necessary data. Three hundred consecutive motorcyclists were interviewed at ten selected locations (parking spots). The responses were analysed using SPSS v7.5 at the statistical significance p<0.05. The result found that due to motorcyclists’ body exposure during crash, lower leg are mostly affected with 38% value, followed by upper leg with 24% and head with 16% with remaining 22% as damaged only. This may warrant the need for provision of government of motorcycle lanes either with segregated travel lane or exclusively separated lane by the Federal government of Nigeria to form part of her safe road policy.
Unintended Consequences of California’s Cap-and-Trade: An Examination of Industrial Electricity Productivity since California Enacted Assembly Bill 32, the California Global Warming Solutions Act
Authors: Tanoos James J.
Published: September 2018

Greater American regulatory moving from federal to state governments has resulted in varying levels of environmental legislation and regulation. One example is the cap-and-trade system in California, which has been deemed a success in limiting greenhouse gas emissions as well as in earning revenue for the state. However, the coinciding production rates for polluting organizations has not been analyzed on a macro level. This study examined the air pollution and production rates of electricity organizations operating in California since cap-and-trade went into effect and found that since the legislation took effect, not only did production decreased slightly, but also, contrary to much analysis, the rates of air pollution from these organizations increased sharply.
Study on the Catalytic Effect of Nitric Acid Activated Myanmar Natural Clay for the Degradation of Plastic Wastes
Authors: Thant Amie , Hmwe Chaw Su Su
Published: September 2018

In this study, the performance of different acid treated Myanmar Natural Clay (Mabisian) was conducted the pyrolysis of mixed plastic wastes, 40% high density polyethylene, 30% polypropylene, 25% low density polyethylene and 5% polystyrene. Mabisian clay was refluxed with different concentration of nitric acid (2M, 4M, 6M, 8M, 10M, 12M and 14M)  at 100ºC for 3hrs followed by calcination at 500ºC for 1hr. The physico-chemical characteristics of resulted leached clay were studied by X-Ray Fluoresence spectroscopy (XRF), X-Ray Diffraction (XRD) and Fourier Transformed Infrared Spectroscopy (FTIR). The pyrolytic oil was characterized by Gas Chromatography – mass spectopy (GC-MS). XRF and FTIR studies indicated that acid treatment under reflux condition lead to the removal of octahedral Al3+ cations along with other impurities.  The chemical treatment increased the Si/Al ratio.  The maximum liquid yield (75%) was obtained at 12 M nitric acid, 3hr reaction time and 100 º C reaction temperatures. In addition, the percent peak area of gasoline range hydrocarbon was obtained 55.6% at optimum condition. Thus, the treated clay can be used as promising as catalyst support.
Performance Improvement of a Type of Turning Machines
Authors: Zhilevski Marin Milkov , Mikhov Mikho Rachev
Published: September 2018

The basic problems in modernization of a type of turning machines with digital program control are discussed in this paper. The main requirements for the drive system are analyzed and formulated. A number of models for computer simulation with various electric drives have been developed aiming at studying their dynamic and static regimes for the respective control algorithms. Some options for performance improvement of the respective drives are presented. The experimental research carried out confirms good performance of the applied solutions. The results of this study can be used in the design and set up of such driving systems.
Modern approach to materials currently used in transmissions gears
Authors: Matczak Joanna , Matczak Kamil
Published: September 2018

The article discusses the materials currently used for transmission elements as an alternative to traditionally used bearing, alloy and special steels, for carburizing and for improvement. The material properties were presented, the possibilities of their implementation were discussed, as well as the advantages and disadvantages of their application. A comparative analysis of the proposed materials was made. The possible development directions have been indicated.
Modernization of railway light led driver
Authors: Mezitis Mareks , Eiduks Janis , Muhitova Ruslans , Sansyzbajeva Zura , Semenchukovs Roberta , Semenchukovs Sergejs
Published: September 2018

The proof of the positive and negative aspects of various types of optical systems that have been introduced by the railway network. Special attention is paid to special LED lamps and their power driver modernization. Modelling of the power driver circuit in the SIMULINK environment has been finished