bluuebunny/crossref_metadata_2025 huggingface dataset:
Подходы к стимулированию покупателей в розничной торговле
Authors: Депутатова Елена Юрьевна , Ильяшенко Светлана Борисовна
Published: March 2018

Глобальные изменения, повлекшие за собой перераспределение дохода между высокомаржинальной офлайн- и низкомаржинальной онлайн-корзиной, вызвали не только необходимость изменений в сфере управления, но и в новых подходах к изучению покупательского поведения. Набор факторов и критериев, которыми руководствуются покупатели при выборе товаров и услуг является основополагающим вопросом теорий поведения потребителей.
Наличие в магазине широкого ассортимента товаров и услуг при ориентированной на целевой сегмент ценовой стратегии, и программ лояльности не является гарантией успеха в бизнесе. Экономическая рецессия, общий спад покупательской активности определяют стремление людей экономить, а значит, цена остается важным критерием выбора покупателя. Отечественный рынок заполнен марками отднотипных товаров, в связи с чем, стимулировать покупательскую активность становится сложнее. Улучшение качества представления товаров, в том числе, с помощью акций по стимулированию продаж (ценовых и неценовых) позволяют покупателям экономить или быть в этом убежденными. Розничные торговые предприятия, таким образом, реализуют больше товаров. Однако, такие маркетинговые мероприятия, во многом, носят эмоциональный характер: люди запасаются «впрок» или действуют под влиянием толпы. Получается, что рациональность выбора согласно теориям поведения представлена комплексом критериев, имеющих ярко выраженный эмпирический характер. Такая взаимообусловленность теорий рационального и эмпирического поведения потребителей определили актуальность данного исследования.
Привлечение и удержание покупателей в электронной торговле
Authors: Панкина Татьяна Викторовна , Никишин Александр Федорович , Бойкова Анастасия Владимировна
Published: March 2018

В секторе электронной торговли конкуренция значительно выше, чем в традиционной. В первую очередь это связано с отсутствием географических ограничений создания Интернет-магазина и достаточно небольшими начальными инвестициями. Кроме этого необходимо отметить, что покупатели в сети Интернет намного более мобильны и с легкостью меняют место совершения покупки. Данные факторы на фоне снижение покупательской способности, вызванной сложившимися экономическими условиями в стране, делают задачу привлечения и удержания покупателей Интернет-магазинов крайне актуальной. В статье предлагается комплекс мероприятий по привлечению и удержанию покупателей Интернет-магазинов на разных стадиях покупки, а также предложена методика оценки эффективности программы лояльности.
Ассортимент как фактор стимулирования продаж в электронной торговле
Authors: Бойкова Анастасия Владимировна , Брагин Леонид Александрович
Published: March 2018

В условиях ужесточения конкуренции на рынке, а также падения спроса организации торговли вынуждены искать направления повышения эффективности хозяйственной деятельности. Особенно остро указанная проблема проявляется в сфере электронной торговли. Зачастую в качестве основной задачи в современной литературе рассматриваются направления привлечения покупателя на сайт Интернет-магазина. Тем не менее, также важной задачей является удержание покупателя и его стимулирование к покупке товаров. В статье рассматривается роль ассортиментной политики в стимулировании продаж в электронной торговле. В частности, внимание уделяется сопутствующим товарам, его представлению на сайте Интернет-магазина, а также собственным торговым маркам.
Формирование и развитие биржевых структур и адаптация коммерческих организаций к современным условиям
Authors: Магомедов Габибула Джаруллаевич , Карпухин Александр Андреевич , Гурова Валерия Вадимовна
Published: March 2018

В статье рассмотрено понятие биржи, описаны функции товарной биржи, выполнен анализ финансовых показателей биржевой торговли АО «Московский мясокомбинат», охарактеризованы сделки, совершаемые на товарной бирже, представлены организационно-технические аспекты биржевой торговли, проведена оценка эффективности организации торговли коммерческого предприятия на Национальной товарной бирже.
Review on Globalization and Importance of Strategic Human Resource Management
Authors: Alharthey Dr. Bandar Khalaf
Published: March 2018

Strategic human resource management (SHRM) is the main concern of the managers who are expanding their business at global level. In the current era, recognition of value of the human factor is emphasized by the managers to align business strategy and HR policies. The main purpose of the article is to explore facts about the impact of globalization on HRM with special reference to SHRM. In order to assess these aspects, implications of globalization and SHRM will be analyzed and global orientation of HR professionals will be assessed, so that a deep insight about the importance of SHRM can be developed.
Chemical Castration Using Iron (III) Chloride Hexahydrate (KEBIRI KIMIAWI MENGGUNAKAN FERIKLORIDA HEKSAHIDRAT)
Authors: Ulum Mokhamad Fakhrul , Paramitha Devi , Sariningrum Arlita , Maharani Anizza Dyah Kartika , Tumbelaka Ligaya ITA , Noviana Deni
Published: March 2018

Chemical castration is a method that can be applied easily without any surgical intervention in animals. This study utilized iron (III) chloride hexahydrate (FeCl3.6H2O) as a new material for chemical castration in mice. Twenty seven adult male mice were divided into five groups: FeCl3 20% (n = 6), FeCl3 10% (n = 6), FeCl3 5.0% (n = 6), FeCl3 2.5% (n = 6), and control NaCl 0.9% (n = 3). A 0.2 mL of NaCl 0.9% or FeCl3 in various concentrations was injected intra-testicularly on each testis of the mice. Post-castration survival rate with LD50 values was obtained at the concentrations between 2.5-5.0% of FeCl3 groups, and 100% mice survived in the control group. The size of testis and concentration of spermatozoa decreased, in contrast with the increased concentration of FeCl3 solution used seven days post-injection compared to the control group.

ABSTRAK

Kebiri/kastrasi kimiawi secara injeksi intra-testis merupakan metode pengebiriam yang dapat dilakukan dengan mudah tanpa prosedur bedah pada hewan. Penelitian ini memanfaatkan larutan besi (ferri/III) klorida (FeCl3) sebagai bahan baru untuk tindakan kebiri kimiawi pada mencit. Mencit jantan dewasa umur lima bulan sebanyak 27 ekor dibagi dalam lima kelompok yaitu FeCl3 20% (n=6), FeCl3 10% (n=6), FeCl3 5,0% (n=6), FeCl3 2,5% (n=6) dan kontrol NaCl 0,9% (n=3). Larutan FeCl3 sebanyak 0,2 mL diinjeksikan secara intra-testikel pada setiap organ testis. Daya hidup pascakebiri injeksi nilai LD 50 diperoleh pada kelompok FeCl3 konsentrasi di antara 2,5-5,0 % dan kelompok kontrol 100 % hidup. Organ testis dalam skrotum mengalami pengecilan ukuran dan konsentrasi spermatozoa mengalami penurunan seiring dengan peningkatan konsentrasi larutan FeCl3 yang digunakan setelah tujuh hari pasca injeksi dibandingkan dengan kontrol.
Characterization of Two Undescribed Mucoralean Species with Specific Habitats in Korea
Authors: Lee Seo Hee , Nguyen Thuong T. T. , Lee Hyang Burm
Published: March 2018

The order Mucorales, the largest in number of species within the Mucoromycotina, comprises typically fast-growing saprotrophic fungi. During a study of the fungal diversity of undiscovered taxa in Korea, two mucoralean strains, CNUFC-GWD3-9 and CNUFC-EGF1-4, were isolated from specific habitats including freshwater and fecal samples, respectively, in Korea. The strains were analyzed both for morphology and phylogeny based on the internal transcribed spacer (ITS) and large subunit (LSU) of 28S ribosomal DNA regions. On the basis of their morphological characteristics and sequence analyses, isolates CNUFC-GWD3-9 and CNUFC-EGF1-4 were confirmed to be Gilbertella persicaria and Pilobolus crystallinus, respectively.To the best of our knowledge, there are no published literature records of these two genera in Korea.
BASE NACIONAL COMUM CURRICULAR: À CONTRAMÃO DOS ESPAÇOS DE APRENDIZAGEM INOVADORES E INCLUSIVOS
Authors: Orrú Sílvia Ester
Published: March 2018

O texto trata da questão da Base Nacional Comum Curricular (BNCC) e de seus pressupostos enunciados sobre o que deve ser ensinado aos estudantes do Brasil pelas escolas de Educação Básica. Segundo o artigo 23 da LDBEN nº 9394/96, a Educação Básica pode se organizar de modos distintos e diversos para a promoção da educação. Essa abertura facultou às escolas com propostas de educação diferenciada a desenvolverem seus projetos pedagógicos fundamentados na autonomia, emancipação, liberdade, inovação e inclusão, tornando-se conhecidas como espaços de aprendizagem inovadores e inclusivos. Encontra-se, porém, na BNCC pressupostos que se apresentam opostos ao Art. 23, de modo a contrapor-se ao que vem sendo realizado por escolas que sustentam sua ação pedagógica pelo referido artigo.
ABORDAGEM QUANTITATIVA NA PESQUISA EM EDUCAÇÃO: INVESTIGAÇÕES NO COTIDIANO ESCOLAR
Authors: Nascimento Leandra Fernandes do , Cavalcante Maria Marina Dias
Published: March 2018

Esse artigo sintetiza o resultado dos estudos, pesquisas, discussões e debates realizados pelos autores e demais colegas de turma, participantes no percurso da disciplina de Seminário de Prática de Pesquisa I do Programa de Pós-Graduação em Educação de uma Universidade Brasileira concernente aos métodos de pesquisa e suas implicações epistemológicas na produção de conhecimentos científicos em Educação. Desse modo, o referido texto tem por objetivo discorrer acerca da abordagem quantitativa em educação com ênfase nas questões epistemológicas e metodológicas, destacando os aspectos histórico e teórico-metodológico referentes às pesquisas com abordagem quantitativa, registrando, portanto, seus fundamentos. Finalmente, registra-se uma discussão em torno das potencialidades e dos limites da utilização das pesquisas com abordagem quantitativa em Educação.
FERIA DEL LIBRO Y CULTURA DIGITAL
Authors: Mihal Ivana
Published: March 2018

El interés de los estudios antropológicos por las ferias del libro ha ido incrementándose de la mano de los aportes de esta disciplina al campo de estudio de las distintas maneras de leer en la actualidad; con las políticas orientadas a la lectura y con la industria editorial. Este trabajo en particular, se orienta a partir de los siguientes interrogantes: ¿qué características presentan las distintas ferias del libro?, ¿a qué se hace referencia con el término cultura digital en dichos eventos?, ¿qué singularidades tiene este fenómeno en relación con las producciones específicas de libros? Particularmente este texto se enfocará en la Feria Internacional del Libro de Buenos Aires llevada a cabo en mayo de 2016, a partir de un abordaje cualitativo, cuyos materiales se basan en un trabajo de campo realizado en el lugar, recuperando a su vez observaciones con y sin participación en actividades culturales de distinto tipo realizadas en ediciones anteriores en dicho evento. Asimismo, se complementará con materiales de fuentes secundarias.
CONTENIDOS DE LA ENSEÑANZA DE LA EDUCACIÓN FÍSICA ESCOLAR. DISCUSIONES EN TORNO AL CURRÍCULO EN ARGENTINA
Authors: Rodríguez Norma Beatriz
Published: March 2018

Este trabajo es el resultado de una investigación mayor que discute los contenidos de la enseñanza en el currículo de la Educación Física[1]. Siendo el caso argentino un ejemplo y una posibilidad de reflexión teórico- epistemológica sobre la organización curricular. Pero también es estudio de un caso, los Contenidos Básicos Comunes para el área de Educación Física, en el marco de una reforma educativa que propuso contenidos básicos para la educación en la República Argentina, en la década de 1990. La hipótesis que adelantamos es que la transición de una Educación Física a una Educación Corporal tiene su correlato en el diálogo que la primera realiza con la psicología del desarrollo y la segunda con el psicoanálisis. Pero también, en la propia constitución de su objeto, en tanto la primera trata con conocimientos y la segunda con el saber. En el análisis de los documentos primarios recuperamos los datos que nos permitieron abordar nuestra hipótesis en un sentido práctico.
Dissolved Organic Carbon in Leachate after Application of Granular and Liquid N–P–K Fertilizers to a Sugarcane Soil
Authors: Pittaway P. A. , Melland A. R. , Antille D. L. , Marchuk S.
Published: March 2018

The progressive decline of soil organic matter (SOM) threatens the sustainability of arable cropping worldwide. Residue removal and burning, destruction of protected microsites, and the acceleration of microbial decomposition are key factors. Desorption of SOM by ammonia‐based fertilizers from organomineral complexes in soil may also play a role. A urea‐ and molasses‐based liquid fertilizer formulation and a urea‐based granular formulation were applied at recommended and district practice rates, respectively, to soil leaching columns, with unfertilized columns used as controls. The chemistry of leachate collected from the columns, filled with two sandy soils differing in recent cropping history, was monitored over eight successive wet–dry drainage events. The pH, electrical conductivity, and concentration and species of N in leachate was compared with the concentration and aromaticity of dissolved organic C (DOC) to indicate if salt solutions derived from the two fertilizers extracted SOM from clay mineral sites. Cation exchange capacity and exchangeable cations in the soil were monitored at the start and end of the trial. Fertilizer application increased DOC in leachate up to 40 times above the control, but reduced aromaticity (specific ultraviolet light absorbance at 253.7 nm). Dissolved organic C was linearly proportional to leachate NH4–N concentration. Exchangeable Ca and Mg in soil from fertilized columns at the end of both trials were significantly lower than in unfertilized soil, indicating that ammonium salt solutions derived from the fertilizers extracted cations and variably charged organic matter from soil mineral exchange sites. Desorption of organic matter and divalent cations from organomineral sites by ammonia‐based fertilizers may be implicated in soil acidification.

Core Ideas

Ammonium N displaces DOC from organomineral complexes.

Fertilizers formulated with molasses stimulate N immobilization.

Displaced DOM is less aromatic than unfertilized DOM.

Displacement of DOM contributes to acidification.

DOM leaching with nitrate may increase N2O emissions.
Effects of Calcium and Magnesium Fertilization on Antioxidant Activities during Cassava Postharvest Physiological Deterioration
Authors: Djabou Astride Stéphanie Mouafi , Qin Yuling , Thaddee Boudjeko , Figueiredo Priscila Gonzales , Feifei An , Carvalho Luiz J. C. B. , Omokolo Denis Ndoumou , Li Kaimian , Niemenak Nicolas , Chen Songbi
Published: March 2018

The current research addressed the effect of fertilizers containing Ca2+ and Mg2+ on cassava (Manihot esculenta Crantz) storage roots (CSRs) during postharvest physiological deterioration (PPD). Cassava PPD tolerant and susceptible genotypes were grown in pots and treated with fertilizers containing Ca2+ or Mg2+. Eight months after planting, CSRs were harvested and stored at room temperature for 30 d. Morphological changes, antioxidant activities, mineral content, and starch content were determined. The results indicated that application of Ca2+ and Mg2+ fertilizers delayed PPD for >10 d in the susceptible genotype (SC5), but Mg2+ fertilizer elevated PPD in the tolerant genotype (QZ1). The Ca2+ fertilizer significantly increased fresh weight. A significant decrease in starch content in CSRs of SC5 treated with Mg2+ fertilizer was observed. The Mg2+ fertilizer slightly enhanced Ca2+, Mg2+, and K+ contents in both genotypes. In addition, Ca2+ fertilization led to a significant increase in H2O2 content and subsequent elevation of activities of catalase and peroxidase in both genotypes, especially at harvest. Our findings suggest that soil fertilization with fertilizers containing Ca2+ and Mg2+ may play a distinct role in PPD delay in CSRs.
Lysimeters in Vadose Zone Research
Authors: Pütz Thomas , Fank Johann , Flury Markus
Published: March 2018

Core Ideas

Lysimeters bridge the gap between laboratory and field experiments.

Lysimeters allow the measurement of a complete water balance.

Lysimeters provide a complete mass balance for a representative ecosystem segment.

Lysimeters are methodological experimental tools to study the water and matter fluxes in the vadose zone, as well as the environmental fate of chemicals. Lysimeters are available in various types. The most sophisticated lysimeters are filled monolithically, are equipped with a pressure‐controlled lower boundary, and are weighable, allowing the measurement of hydraulic fluxes, i.e., rainfall, drainage, evapotranspiration, dew, and hoar frost with high precision. This special section of Vadose Zone Journal reports on current lysimeter research.
Regulating Big Data effects in the European insurance market
Authors: Porrini Donatella
Published: March 2018

The article analyzes the regulatory framework in the insurance market in connection with the advent of Big Data, such as information collected from different sources that can be manipulated by new technologies. The use of Big Data offers significant opportunities to the insurance companies in terms of digitization of the distribution channels and greater knowledge of the customers, which is instrumental to a more effective identification of the individual’s risk profile, as well as improvement of the competitiveness. However, regulatory measures are needed for a proper use of Big Data in terms of respect of the individual privacy, potential discrimination and constraint on competition.
Assessment of drinking water suitability in low income rural areas: a case study in Sixaola, Costa Rica
Authors: Mena-Rivera Leonardo , Quirós-Vega José
Published: March 2018

Vegas-Las Palmas is a rural settlement located in the southern Caribbean region of Costa Rica on the border with Panama. Its population does not have access to potable water, and inhabitants depend on water from wells at the water table level to meet their needs. These wells lack basic infrastructure to protect this water from contamination. In this study, water quality was evaluated at 12 wells from 2014 to 2016 (n = 72). The results revealed high concentrations of faecal coliforms and Escherichia coli with maximum values of 4.6 × 104 MPN/100 mL and 1.1 × 104 MPN/100 mL, respectively. In addition, maximum values of pH, conductivity, turbidity, Ca, Mg, K, Fe, Mn, Cd and Pb were found to be outside the standard limits (nationally and internationally) for potable water. Possible sources of water contamination are associated with the geomorphological characteristics of the area, as well as with hydrometeorological and anthropogenic factors such as the lack of sewerage, the presence of latrines, animals near the wells and the use of agrochemicals. The water quality was heterogeneous among wells, and all of them were found to have conditions that caused water to be unfit for human consumption.
Ligand and Structure-based Modeling of Passive Diffusion through the Blood-Brain Barrier
Authors: Vilar Santiago , Sobarzo-Sanchez Eduardo , Santana Lourdes , Uriarte Eugenio
Published: March 2018

Background:

Blood-brain barrier transport is an important process to be considered in drug
candidates. The blood-brain barrier protects the brain from toxicological agents and, therefore, also
establishes a restrictive mechanism for the delivery of drugs into the brain. Although there are different
and complex mechanisms implicated in drug transport, in this review we focused on the prediction of
passive diffusion through the blood-brain barrier.

Methods:

We elaborated on ligand-based and structure-based models that have been described to predict
the blood-brain barrier permeability.

Results:

Multiple 2D and 3D QSPR/QSAR models and integrative approaches have been published to
establish quantitative and qualitative relationships with the blood-brain barrier permeability. We explained
different types of descriptors that correlate with passive diffusion along with data analysis
methods. Moreover, we discussed the applicability of other types of molecular structure-based simulations,
such as molecular dynamics, and their implications in the prediction of passive diffusion. Challenges
and limitations of experimental measurements of permeability and in silico predictive methods
were also described.

Conclusion:

Improvements in the prediction of blood-brain barrier permeability from different types
of in silico models are crucial to optimize the process of Central Nervous System drug discovery and
development.
Synthesis Under Microwave Irradiation and Molecular Docking of Some Novel Bioactive Thiadiazoles
Authors: Gomha Sobhi M. , Edress Mastora M. , Muhammad Zeinab A. , Gaber Hatem M. , Amin Mohamed M. , Matar Islam K.
Published: March 2018

Background: A novel series of fused imidazole was prepared from the reaction of 2- bromoacetyl-3-phenyl-1,3,4-thiadiazole with various heterocyclic amines under microwave irradiation. The structures of all the novel products were elucidated based on the elemental analysis and spectral data.  Results: In addition, the biological activity of the newly synthesized compounds was evaluated and the results obtained indicate their potency as anti-inflammatory, analgesic and anti- ulcer agents.  Conclusion: The binding mechanism of the most active compounds was studied using MOE to analyze the molecular interactions.
Synthesis and Biological Evaluation of Coumarins Derivatives as Potential Inhibitors of the Production of Pseudomonas aeruginosa Virulence Factor Pyocyanin
Authors: da S.M. Forezi Luana , Froes Thamires Quadros , Cardoso Mariana F.C. , de Oliveira Maciel Carine Assuncao , Nicastro Gianluca G. , Baldini Regina L. , Costa Dora C.S. , Ferreira Vitor F. , Castilho Marcelo S. , de C. da Silva Fernando
Published: March 2018

Antimicrobial Resistance (AMR) is a serious problem for the humans since it threatens the
effective prevention and treatment of an ever-increasing range of infections caused by bacteria, parasites,
viruses and fungi. One way around this problem is to act on the virulence factors, produced by
bacteria, which increase their infection effectiveness. In view of these facts, new coumarin derivatives
were synthesized and evaluated for their anti-virulence biological activity towards Pseudomonas
aeruginosa. The results suggest that coumarin derivatives with a secondary carbon at C-3 position
reduces P. aeruginosa growth whereas compounds with one additional substituent have a significant
effect over pyocyanin production (10k EC50 7 ± 2 µM; 10l EC50 42 ± 13 µM). Moreover, 10k reduces P.
aeruginosa motility and biofilm formation, what is compatible with a quorum sensing related mechanism
of action.
Functionalized Multi Walled Carbon Nanotubes-Reinforced Hollow Fiber Solid/Liquid Phase Microextraction and HPLC-DAD for Determination of Phenazopyridine in Urine
Authors: Al-Hashimi Nabil N. , Awwad Anas I. , Al-Hashimi Aqeel N. , Mansi Iman A. , Shahin Rand O. , Hamed Saja H.
Published: March 2018

Introduction:

A sensitive analytical method based on functionalized multi walled carbon nanotubes reinforced hollow fiber solid/liquid phase microextraction (F-MWCNTs-HF-SLPME) forwarded with HPLC-DAD for analyzing phenazopyridine from urine is presented.

Materials and Methods:

The extraction of phenazopyridine is performed using specially designed FMWCNTs- HF-SLPME device constructed as follows: the functionalized multi walled carbon nanotubes (F-MWCNTs) were immobilized into the pores of 2.5 cm hollow fiber micro-tube using capillary forces and ultrasonication, then, the lumen of the micro-tube was filled with 1-octanol with two ends sealed. Subsequently, the device was placed into 10-mL of urine sample containing the analyte with agitation. After ending extraction, the device was removed, rinsed, sonicated in 250 µL of organic solvent and analyzed directly by the separation system.

Results and Conclusion:

Different parameters affecting the performance of the developed method were optimized. The method showed good linearity with (R2) 0.999 and good repeatability with (RSDs) from 3.7 to 0.9% at analyte concentration ranged from 0.01 to 10 µg L-1 of spiked urine samples. The limit of detection/ quantitation, LODs/LOQs was 0.02/0.09 µg L-1. In comparison with reference methods, the developed method is considered as a promising microextraction technique for determination of trace phenazopyridine in human urine using a common HPLC without further cleanup procedures.
The effectiveness of the cooperative problem-based learning in improving the elementary school students’ critical thinking skills and interpersonal intelligence
Authors: Amrullah Khalis , Suwarjo Suwarjo
Published: March 2018

This research aims to find out the effect of the cooperative problem-based learning on the improvement of the critical thinking and interpersonal intelligence of the fifth-grade students. This research was a quasi-experiment with the pretest-posttest control group design. The subjects were all fifth-grade students of SDN Liang Anggang 1, Pandahan 1, and Pandahan 2, Bati-Bati District of South Kalimantan in the second semester of the academic year 2015/2016. Data collection techniques that used were test and scale technique. The test was used to find out the critical thinking and the scale were used to find out the interpersonal intelligence.The hypothesis was tested using t-test and MANOVA with 0.05 significant levels. The result of this research shows that the use of the cooperative problem-based learning model in natural science teaching is effective in improving critical thinking and interpersonal intelligence of the fifth-grade students. Based on the result of t-test in posttest, the experimental I and II with control group show that the sig. < 0.05 and the result of the MANOVA in the experimental I and II with control group show that the significant value 0.000 ˂ 0.05.
Teachers’ scientific approach implementation in inculcating the students’ scientific attitudes
Authors: Masithoh Dewi
Published: March 2018

The study aimed at attaining an overview on teaching experiences by means of guided inquiry model of the scientific approach in order to inculcate the scientific attitudes among the students of Luqman Al Hakim International Integrated Islamic Primary School Yogyakarta. The study was a qualitative research using the ethnographic classroom approach. The subjects in this study were the headmaster, the homeroom teachers of Grade 4A students, and the Grade 4A students. In collecting the data, the researchers conducted interview, observation, and documentation. Then, the instruments that the researchers employed were the interview guidelines and the observation guidelines. The data in this study were analyzed using Lankshear and Knobel models and the analysis also included the data that had been attained from both the observation and the interview. In order to test the data validity, the researchers conducted the subject triangulation and the method triangulation. The findings in this study thus revealed that the teaching activities that make use of the scientific approach consists of seven strands of learning cycles and these strands include the spiritual, moral, intellectual, physical, interpersonal, cultural, and social aspects. Each aspect has specific purpose and, as a result, by implementing each aspect the students will have the scientific attitudes similar to those owned by a scientist in solving their problems. The recounted teaching experiences, which made use of the scientific approach, have shown similarities in that teaching activities become more meaningful if they are conducted realistically with various learning activities both inside and outside the classroom. The constraints in the application of the scientific approach are varying the teachers’ ability in understanding the scientific approach, varying the learning styles and the learning abilities, and varying the learning process for the students who need special assistance.
ORMANCILIK ÇALIŞMALARINDA İŞ GÜVENLİĞİ ANALİZİNİN UYGULANMASI (KARABÜK ORMAN İŞLETMESİ ÖRNEĞİ)
Authors: TUNAY Metin , BOZKURT Ali
Published: March 2018

Bu çalışma ile ormancılık
çalışmalarında iş güvenliği analizinin uygulanması amaçlanmıştır. Karabük Orman
İşletme Müdürlüğü sorumluluk alanında vahidi fiyatla çalışan toplam 100 işçi
ile yapılan anketlerden elde edilen veriler irdelenmiş, işçilerin sosyal durumları,
alışkanlıkları, iş kazaları ve kazaların nedenlerinin tespiti ile çalışma
ortamında iş kazası ve meslek hastalığı oluşturabilecek riskler değerlendirilip
bunların engellenmesine yönelik iyileştirme önerilerinde bulunulmuştur. Risk
değerlendirmesinin Fine & Kinney metodu ile gerçekleştirilmesi sağlanmış,
hesaplanan RÖS değerleri ile risk önem dereceleri ve düzenleyici önleyici
faaliyet verileri elde edilmiştir. Elde edilen verilere göre; orman işçilerinden %
56’sının en az bir defa iş kazası geçirdiği, kaza nedenlerinin ise başlıca
çalışma yeri zorluğu, aşırı yorgunluk-uykusuzluk, işi hafife alma-dikkatsizlik
gibi faktörler olduğu belirlenmiştir. Son olarak, gerekli önlemlerin alınması
için öneriler sunulmuştur.
Editorial note
Authors: Lapina Yulia
Published: March 2018

The recent issue of the journal Risk Governance and Control: Financial Markets & Institutions is devoted to the issues of fixed investments, risk management practices, inflation uncertainty, budgetary discipline, debtor’s right etc.
Targeted killing with drones? Old arguments, new technologies
Authors: Meisels Tamar
Published: March 2018

The question of how to contend with terrorism in keeping with our preexisting
moral and legal commitments now challenges Europe as well as Israel and the
United States: how do we apply Just War Theory and International Law to
asymmetrical warfare, specifically to our counter terrorism measures? What
can the classic moral argument in Just and Unjust Wars teach us about
contemporary targeted killings with drones? I begin with a defense of
targeted killing, arguing for the advantages of pin pointed attacks over any
alternative measure available for combatting terrorism. Assuming the
legitimacy of killing combatants in wartime, I argue, there is nothing wrong,
and in fact much that is right, with targeting particular terrorists selected
by name, as long as their assassinations can be reasonably expected to reduce
terrorist hostilities rather than increase it. Subsequently, I offer some
further thoughts and comments on the use of remotely piloted aircrafts to
carry out targeted killings, and address the various sources for discomfort
with this practice identified by Michael Walzer and others.
On conservative matrices in summability of series
Authors: Yu Dansheng
Published: March 2018

In the present paper, we give some sufficient conditions for a matrix belongs
to the class B (?n, ?n; ?n, ?n; ?) when ? ? ? (p,q). Our results
generalize the result of Das [4] and Yu [13]. Some applications of the main
results are given
A new semi-analytical approach for numerical solving of cauchy problem for differential equations with delay
Authors: Rebenda Josef , Smarda Zdeněk , Khan Yasir
Published: March 2018

In the paper, we present new semi-analytical approach for FDE?s consisting in
combination of the method of steps and a technique called differential
transformation method (DTM). This approach reduces the original Cauchy
problem for delayed or neutral differential equation to Cauchy problem for
ordinary differential equation for which DTM is convenient and efficient
method. Moreover, there is no need of any symbolic calculations or initial
approximation guesstimates in contrast to methods like the homotopy analysis
method, the homotopy perturbation method, the variational iteration method
or the Adomian decomposition method. The efficiency of the proposed method is
shown on certain classes of FDE?s with multiple constant delays including
FDE of neutral type. We also compare it to the current approach of using DTM
and the Adomian decomposition method where Cauchy problem is not well posed.
Oscillation results for second order matrix differential equations with damping
Authors: Başcı Yasemin , Tiryaki Aydın
Published: March 2018

By using the positive linear functional, including the general means and
Riccati technique, some new oscillation criteria are established for the
second order matrix differential equations (r(t)P(t)?(X(t))K(X'(t)))' +
p(t)R(t)?(X(t))K(X'(t)) + Q(t)F(X'(t))G(X(t)) = 0,t ? t0 > 0. The results
improve and generalize those given in some previous papers.
On some exact distributions in ranked set sampling
Authors: Sheikhi Ayyub
Published: March 2018

In this article we obtain the exact joint distribution of a ranked set
sample. We show that this distribution belongs to the family of unified
multivariate skew normal distributions. We also investigate a multivariate
skew-t distribution 62J12 using ranked set samples as an application of our
results. A numerical example is also provided to illustrate our results.
Angles and quasiconformal mappings between manifolds
Authors: Zhu Jian-Feng
Published: March 2018

In this paper we discuss the distortion of angles under quasiconformal
deformation between manifolds. Moreover, we obtain some useful inequalities.
A fixed point approach to the stability of sextic Lie *-derivations
Authors: Kang Dongseung , Koh Heejeong
Published: March 2018

We obtain a general solution of the sextic functional equation f (ax+by)+ f
(ax-by)+ f (bx+ay)+ f (bx-ay) = (ab)2(a2 + b2)[f(x+y)+f(x-y)]
+ 2(a2-b2)(a4-b4)[f(x)+f(y)] and investigate the stability of
sextic Lie *-derivations associated with the given functional equation via
fixed point method. Also, we present a counterexample for a single case.
Evaluation of Hessenberg determinants via generating function approach
Authors: Kılıç Emrah , Arıkan Talha
Published: March 2018

In this paper, we will present various results on computing of wide classes
of Hessenberg matrices whose entries are the terms of any sequence. We
present many new results on the subject as well as our results will cover
and generalize earlier many results by using generating function method.
Moreover, we will present a new approach on computing Hessenberg
determinants, whose entries are general higher order linear recursions with
arbitrary constant coefficients, based on finding an adjacency-factor matrix.
We will give some interesting showcases to show how to use our new method.
Absolute weighted arithmetic mean summability factors of infinite series and trigonometric fourier series
Authors: Bor Hüseyin
Published: March 2018

In this paper, we generalized a known theorem dealing with absolute weighted
arithmetic mean summability of infinite series by using a quasi-f-power
increasing sequence instead of a quasi-?-power increasing sequence. And we
applied it to the trigonometric Fourier series
A new high algebraic order efficient finite difference method for the solution of the Schrödinger equation
Authors: Dong Ming , Simos Theodore
Published: March 2018

The development of a new five-stages symmetric two-step method of fourteenth
algebraic order with vanished phase-lag and its first, second, third and
fourth derivatives is analyzed in this paper. More specifically: (1) we will
present the development of the new method, (2) we will determine the local
truncation error (LTE) of the new proposed method, (3) we will analyze the
local truncation error based on the radial time independent Schr?dinger
equation, (4) we will study the stability and the interval of periodicity of
the new proposed method based on a scalar test equation with frequency
different than the frequency of the scalar test equation used for the
phase-lag analysis, (5) we will test the efficiency of the new obtained method
based on its application on the coupled differential equations arising from
the Schr?dinger equation.
Symmetric difference between pseudo B-Fredholm spectrum and spectra originated from fredholm theory
Authors: Tajmouati Abdelaziz , Amouch Mohamed , Karmouni Mohammed
Published: March 2018

In this paper, we continue the study of the pseudo B-Fredholm operators of
Boasso, and the pseudo B-Weyl spectrum of Zariouh and Zguitti; in particular
we find that the pseudo B-Weyl spectrum is empty whenever the pseudo
B-Fredholm spectrum is, and look at the symmetric differences between the
pseudo B-Weyl and other spectra.
On asymptotically deferred statistical equivalence of sequences
Authors: Koşar Cem , Küçükaslan Mehmet , Et Mikail
Published: March 2018

In this study, combining the definition of asymptotically equivalence of
sequences and deferred density, the concepts of asymptotically deferred
statistical equivalence and strong deferred asymptotically equivalence of
nonnegative sequences are introduced. Besides, the main properties of
asymptotically deferred statistical equivalence and strong deferred
asymptotically equivalence, some inclusion and equivalence results are
given.
The drazin inverse of the sum of two matrices and its applications
Authors: Xia Lingling , Deng Bin
Published: March 2018

In this paper, we give the results for the Drazin inverse of P + Q, then
derive a representation for the Drazin inverse of a block matrix M = (A B C
D) under some conditions. Moreover, some alternative representations for
the Drazin inverse of MD where the generalized Schur complement S = D-CADB
is nonsingular. Finally, the numerical example is given to illustrate
our results.
Solvability of a 2 x 2 block operator matrix of chandrasekhar type on a Bananch algebra
Authors: Hashem H.H.G.
Published: March 2018

In this paper, we study the existence of solutions for a system of quadratic
integral equations of Chandrasekhar type by applying fixed point theorem of
a 2 x 2 block operator matrix defined on a nonempty bounded closed convex
subsets of Banach algebras where the entries are nonlinear operators.
Lie product preserving maps on Mn(F)
Authors: Dolinar Gregor , Kuzma Bojan , Marovt Janko
Published: March 2018

Bijective maps on matrices over arbitrary fields with sufficiently many
elements which preserve Lie product are characterized.
The eigenvalue problem with interaction conditions at one interior singular point
Authors: Mukhtarov Oktay , Aydemir Kadriye
Published: March 2018

Some physical processes, both classical physics and quantum physics reduced
to eigenvalue problems for Sturm-Liouville equations. In the recent years
there has been an increasing interest in discontinuous eigenvalue problems
for various Sturm-Liouville type equations. Such problems are connected with
heat transfer problems, vibrating string problems, diffraction problems and
etc. In this study we shall investigate a class of two order eigenvalue
problem with supplementary transmission conditions at one interior singular
point. We give an operator-theoretic interpretation in suitable Hilbert
space.
On generalized fractional operators and a gronwall type inequality with applications
Authors: Adjabi Yassine , Jarad Fahd , Abdeljawad Thabet
Published: March 2018

In this paper, we obtain the Gronwall type inequality for generalized
fractional operators unifying Riemann-Liouville and Hadamard fractional
operators. We apply this inequality to the dependence of the solution of
differential equations, involving generalized fractional derivatives, on both
the order and the initial conditions. More properties for the generalized
fractional operators are formulated and the solutions of initial value
problems in certain new weighted spaces of functions are established as
well.
Ulam stability of some functional inclusions for multi-valued mappings
Authors: Brzdęk Janusz , Piszczek Magdalena
Published: March 2018

We show that some multifunctions F : K ? n(Y), satisfying functional
inclusions of the form ? (x,F(?1(x)),..., F(?n(x)))? F(x)G(x), admit
near-selections f : K ? Y, fulfilling the functional equation ? (x,f
(?1(x)),..,, f(?n(x)))= f(x), where functions G : K ? n(Y), ?: K x
Yn ? Y and ?1,..., ?n ? KK are given, n is a fixed positive integer, K
is a nonempty set, (Y,?) is a group and n(Y) denotes the family of all
nonempty subsets of Y. Our results have been motivated by the notion of Ulam
stability and some earlier outcomes. The main tool in the proofs is a very
recent fixed point theorem for nonlinear operators, acting on some spaces of
multifunctions.
Characterization of a coating 316L applied by plasma transferred arc
Authors: Maslarevic Aleksandar , Bakic Gordana , Djukic Milos , Rajicic Bratislav , Maksimovic Vesna
Published: March 2018

Parts of industrial machines and structures are often exposed to the action of aggressive environments, which in a short period of time can provoke the loss of their integrity. It is well known that for extending the service life against erosion and corrosion, protection of the exposed structure zone by coating is frequently used. Various application methods of protective coatings are applied, and the most common are welding and thermal spraying processes. The aim of this study was characterization of coatings made of stainless steel 316L, widely used in chemical and petrochemical industries. The coating was applied on a structural steel S235JR by plasma transferred arc using powder as a filler material. Due to a number of advantages, the plasma transferred arc (PTA) surfacing process has found significant usages in the field of surface protection. This paper presents results of hardness measurements in characteristic zones of the coating and the base material, as well as microstructural characterization of coatings using optical and scanning electron microscopy. Results of EDS analysis of the coating and hardness measurements indicated that a relatively high dilution (26.1 %) of the base material (BM) and the filler material (FM) occurred in a very narrow zone above the fusion line, and thus did not significantly affect the chemical composition of the rest of the coating. Also, erosion resistance tests of coatings were performed by changing the basic functional parameters that is the impact angle and the speed of erodent particles. It was observed that the erosion resistance of the coating material decreases approximately linearly with the increase of the particle speed. Also, with the increase of the impact angle of the erodent (up to 45 ?), the mass loss of the coating material is increased.
Postmortem serotonin level in cerebrospinal fluid as a marker of the manner of death
Authors: Damjanjuk Irina , Popovic Vesna , Lukic Vera , Soldatovic Ivan , Mihailovic Zoran , Atanasijevic Tatjana
Published: March 2018

Background/Aim. Serotonin [5-hydroxytriptanine (5-HT)], as a neurotransmitter in the central nervous system, is included in the regulation of autonomic and cognitive functions, sensory processing, motor activity, emotions, mood, and almost every kind of behavior. In forensic investigations of death, 5-HT has been studied in different body fluids, regarding the cause of death, particularly in suicides and drug abuse or as a marker of an acute stress response. The aim of this study was to establish 5-HT levels in cerebrospinal fluid (CSF) as a marker of its central activity during fatal event in deaths different in manner, particularly in cases where the victims were aware of the stressful event. Methods. Study sample consisted of 81 postmortem CSF obtained during autopsy. Concentrations of the 5-HT were established regarding natural versus violent (accidents, homicides and suicides) deaths. After preparation, samples were analyzed through the liquid chromatography-tandem mass spectrometry method. Results. Violent deaths had significantly higher 5-HT levels (U = 519.000; p < 0.05). Differences were found in mean values among different causes of death (higher in blunt injury, stabbing and intoxication, while lower in cardiac deaths and hypothermia) but without statistical significance. 5-HT levels significantly differed among age groups (?2 = 13.354; p = 0.001), with the tendency to decrease with age. No differences in 5-HT levels were observed regarding gender, length of agony period, and awareness of impending lethal outcome. The values tended to increase with postmortem interval albeit without significant differences. Conclusion. Serotonin could be a useful postmortem biochemical marker to distinguish natural and violent death, regardless of individual variability in concentrations.
Malignant postpartal gestational trophoblastic neoplasm: A rare appearance of equal ultrasonography and operative finding in uterine placental site trophoblastic tumor and choriocarcinoma
Authors: Maglic Rastko , Mihajlovic Sladjana , Ivic Bojana , Jokanovic Predrag , Dobrosavljevic Aleksandar , Maglic Dragana , Krusic Slavica
Published: March 2018

Introducton. Frequency of malignant gestational trophoblastic neoplasms (GTN) is estimated at 1.03 cases in 1,000 deliveries with 5 fold greater risk in patients younger than 20 and older than 40 years. Serum value of human chorionic gonadotropin is the most relevant parameter in diagnosis of GTN. In placental site trophoblastic tumor (PSTT), serum levels of chorionic gonadotropin do not have the same significance as they do in other malignant GTN. Definite diagnosis of PSTT is almost always confirmed by immunohistochemistry. Case report. In the course of just a few months (August 2016 to January 2017) in the Clinic for Obstetrics and Gynecology ?Narodni front? in Belgrade, two GTN patients were admitted and treated, with almost equal ultrasonography (pictures), operative findings and postoperative outcome. Due to histopathological and immunohistochemical examinations two different types of malignant GTN were confirmed. The first patient (admitted in August 2016), 26 years old, was admitted for uterine bleeding 11 months after vaginal delivery and histopathological examination confirmed PSTT. The second patient (admitted in January 2017), 27 years old, was admitted 4 months after vaginal delivery because of uterine bleeding. Histopathological examination confirmed choriocarcinoma. Conclusion. Considering the fact that malignant GTN can appear in different types, with different ultrasonography pictures, this report is significant because two distinctly different malignant GTN entities could appear with equal clinical manifestations and equal ultrasound pictures even when they may have very different course of the disease treatment and outcome. Such cases need correct diagnosis which may be reached only after immunohistochemical analysis. The ultrasound patterns, both in gray scale, color flow, and Doppler values, were almost equal in both cases and guided the diagnostic procedures to the final treatment, even regardless of their very different histopathology.