bluuebunny/crossref_metadata_2025 huggingface dataset:
A Novel High-Pressure, Low Temperature Perforation Diverter
Authors: Navarrete R. C. , Asadi M. , Fleenor S. M.
Published: January 2018

A novel high-pressure perforation diverter was developed, which is capable of holding pressure differentials of at least 3,750 psi. This diverter was tested in a laboratory model geometry intended to simulate a typical perforation tunnel in an unconventional oil and gas well. This geometry was placed at the bottom of a high-pressure fluid loss cell. Testing was performed at temperatures between 70°F and 180°F at constant pressure. The pressure was incrementally increased from 1,000 psi to 3,750 psi and allowed to equilibrate at each step. The flow rate was monitored through the perforation tunnel as a function of time. There was variation in the flow rate as the pressure was incrementally increased, resulting from the adjustments in the mechanical structure that the diverter forms in the perforation tunnel as a result of the applied pressure. The terminal flow rate was negligible at approximately 3,750 psi. To simulate the removal of the diverter formulation from the perforation tunnel, the perforation tunnel geometry was inverted and constant low flow rates were applied until the diverter was removed. The pressure differential was recorded during this process. The removal data showed that low pressure differentials were required to remove the diverter from the perforation tunnel (25 psi to 200 psi) depending on the shut-in time and the temperature. The salinity of the water affected the performance of the diverter and can be used to fine tune the degree of seal to the perforation. Salinity also helps disaggregate the diverter, facilitating its removal from the well.
Perforation Crushed Zone Characteristics in a Subsurface Sandstone
Authors: Craddock G. G. , Smith John , Haggerty Dennis
Published: January 2018

The nature of the crushed zone is important to the overall hydrocarbon flow following perforation. This work examines the nature of such formation damage using testing and simulation. Furthermore, the crushed zone's effect on overall formation productivity is also discussed.

Using a shock hydrocode, the crushed zone is compared and contrasted by thickness and density for deep penetrating (DP) and big hole (BH) charges. The results are compared to information obtained from flow-laboratory-created crushed zones from previous perforation tests. Information from flow-laboratory testing is then used as input to model flow through the crushed zone and hence measure permeability. A study of the relative effect of the crushed zone on skin effects, including its relative contribution to the overall perforation skin, is presented.

Simulation results indicate that the crushed zone from a DP charge is much thinner than the BH charge layer. These results are obviously charge dependent (in the same class). Visual observations show a structure that differs in the crushed zone from the ambient zone around the perforation. A flow model is derived, which accounts for the transition of hydrocarbon flow through the crushed zone. The crushed zone results are then considered in overall flow production, demonstrating when its effect becomes applicable. These results are reflected in a charge penetration code. Combining all of the information, a recommendation is made to help achieve optimal production downhole.
The Remediation of Oilfield Asphaltenic Deposits: Near-Well-Bore Application
Authors: Budd N. , Joshi N. B. , Russell C. , Paille A. , Li Q.
Published: January 2018

Asphaltene deposition in petroleum production can cause major economic and safety issues for operators. The most commonly applied solution for remediation is a prolonged solvent soak with an aromatic petroleum solvent, such as toluene or xylene. In many cases, these solvents have demonstrated a low dissolving efficiency, and a high frequency of soaks is needed, resulting in unacceptable levels of deferred production.

Nalco Champion has undertaken product development research to provide an appropriate chemical solution. The work presented here describes the technology and techniques used to design chemical product packages and are applicable to both onshore and deepwater production environments. Measurement of the overall solubility parameters of the chemical - deposit interactions, and their implications for product design will be discussed. The ability of the chemical to penetrate and break up the deposit matrix will also be described, as this is a significant factor for solvating efficacy. Finally, a proof-of-concept case history showing success in remediating near-wellbore asphaltene deposits will be presented.

A remediation "pill" containing three separate chemistries was designed for an early-life Anadarko Gulf of Mexico subsea well experiencing asphaltene deposition issues in the lower tubing and near-wellbore region. The three chemistries composing the pill (products A, B, and C) were shown to act synergistically in laboratory studies and were highly effective in remediating field asphaltene deposition relative to pure aromatic solvent. The different make-up chemistries of the pill were targeted primarily to near-wellbore asphaltene deposition, and succeeded in increasing near-wellbore permeability. To deliver the chemistry to the affected area, the pill was deployed topsides between two steel pigs and displaced through the subsea flow loop using dead oil into the desired well. The pill volume was large enough to allow for bullheading though the affected downhole area and approximately five radial feet into the near-wellbore region. A thirty six hour static soak was then used to allow effective penetration and dissolution of the asphaltene deposit.

Multiple ensuing crude flowback samples were tested for constituent chemical residuals, as well as for asphaltene content. Post-treatment well test data showed an immediate increase in the well productivity index (PI) from 0.73 to 3.8. Oil production also increased from 1,600 STB/d to 2,900 STB/d. The positive increase in production lasted just over three months before asphaltene re-accumulation began to decrease the PI. A second identical treatment was conducted 10 months later with even better results.

The benefit of this novel remediation approach relative to traditional xylene soaks was highly apparent based on historical field data. Not only did it show a much greater asphaltene solvency and further increased oil rates, but it allowed for less frequent remediation events and deferred production.
An Experimental Investigation of Formation Damage Induced by PWRI in Unconsolidated Sands
Authors: Ochi Jalel , Oughanem Rezki
Published: January 2018

Formation damage is still a controversial subject within the industry especially when it takes place during Produced Water Re-Injection (PWRI). However, there is a consensus that formation damage results from a complex interaction between water quality, petro-physical and rock mechanical properties of the reservoir as well as the well architecture and completion.

A lot of experimental work has been made in these last decades to understand and quantify the main mechanisms, parameters governing formation damage due to PWRI and the literature in this domain is plentiful. Nevertheless, a lot of questions are left unanswered particularly when it is a question of unconsolidated sands.

This paper describes a core-flooding program performed with sand packs at different permeabilities, variable water qualities and injection conditions. Experiments were performed by injecting well-characterized system that contains either solid particles, mono-sized oil droplets or both of them at various sizes and proportions.

It was shown that for mixture of solid and oil particles, the damage approach based on flow of solid suspensions alone doesn't apply and solid particles-oil droplets interaction is to be considered.

This paper also details the role of each of the produced water components, their interaction and deposition within the core as well as the subsequent damage they induce. More generally, answer to some practical questions would be provided like:

Do solid particles act by their size or concentration? Is oil in water content a key factor? How and where solids and oil deposit? Is there a critical concentration of solid particles and/or oil allowing injecting always in matrix regime and avoid fracturing unconsolidated reservoirs which often lie at shallow depths and in which fracturing can induce cap rock integrity and injection confinement issues? Would it be possible to control formation damage by controlling the injection conditions (flow rate, water salinity, etc…)?

The answers provided here would give practical rules to help in adequately designing and optimizing PWRI projects.
Microemulsions Increase Well Productivity by Removing Organic Deposits and Inorganic Scale in One Step
Authors: Quintero Lirio , Felipe Mary Jane , Miller Kyle , Ponnapati Ramakrishna , Loya Miguel
Published: January 2018

Organic and inorganic deposits that accumulate near the wellbore create flow restrictions. These restrictions result in significant losses of crude oil and gas production and are a serious concern for operators. The organic deposits are mainly paraffins and asphaltenes that precipitate from the crude oil, due to various mechanisms (e.g., changes in phase equilibrium and composition). Typical treatments for these deposits include solvents and acids. More recently, microemulsion fluids have been used for production enhancement.

The objective of this work is to formulate a multifunctional treatment fluid that is able to remove organic and inorganic deposits in one step. This removal can be achieved by formulating a single-phase fluid-type microemulsion that combines the two immiscible treatments (solvents for organic deposit removal and an acid blend for scale removal) and surfactants, including water-wetting molecules.

Systematic evaluation of the microemulsion with various samples of organic deposits and crude oils demonstrates that this novel multifunctional microemulsion treatment fluid completely disperses deposits of paraffins and asphaltenes, breaks viscous emulsions and sludge, removes inorganic scale, and alters the wettability condition of the solids from oil-wet to water-wet.

A case history from a multiple-well field trial is presented that demonstrates the successful application of the microemulsion, with acid, to remove organic material and inorganic scale in oil wells.
Field Application of Engineered Water Injection in Carbonate Reservoirs under Permeability Channeling and Gravity Underride Conditions
Authors: Adegbite Jamiu O. , Al-Shalabi Emad W. , Ghosh Bisweswar
Published: January 2018

This paper investigates field-scale predictions of engineered water injection (EWI) technology in the secondary and tertiary injection modes. Three synthetic 5-spot reservoir models were considered: homogeneous reservoir, heterogeneous reservoir with permeability channeling, and heterogeneous reservoir with gravity underride. The predictions were conducted by upscaling recently history matched coreflood experiments. More so, sensitivity analysis and volumetric sweep efficiency estimation for all the three reservoir models using both tracer and fractional flow methods were investigated. The results showed that the EWI in the secondary mode outperformed other injection techniques (secondary formation water injection (FWI) and tertiary EWI) in all the three reservoir models. Also, the best volumetric sweep efficiency was achieved for the homogeneous reservoir model, followed by the channeling model and then the gravity underride model. Based on the EWI technique interpreted through geochemistry, it is believed that the main reason behind the incremental oil recovery is wettability alteration. This study gives more insight into understanding EWI technology through which field-scale developments can be performed with more certainty and lower risk.
A Novel High Throughput Screening Approach for Flowback Aid Optimization
Authors: Nelson C. W. , Hilliard C. , Kalantar T. H. , Li Y. , Kuo T. , Makarychev-Mikhailov S. , Abivin P. , Prabhu R. , Khvostichenko D.
Published: January 2018

Flowback aid surfactants are key components for optimal water recovery after a fracturing treatment. However, comprehensive guidelines and discovery workflows for selecting an optimal flowback aid are lacking. A suite of carefully designed high-throughput screening tests coupled with industry performance tests was developed and applied to over 50 surfactants representing 12 chemical classes to create a portfolio of formation-specific flowback aids. Experiments were carried out in a two-stage approach that focuses both on intrinsic surfactant properties and on interactions with the reservoir environment. In the first stage, promising surfactant candidates were selected using high-throughput testing of surface tension, critical micelle concentration, cloud point, mineral adsorption, emulsification, and heat-aged stability. In the second stage, efficacy of surfactant candidates was assessed by testing fracturing fluid cleanup from selected shale matrices.

We observed trends in critical performance parameters with simple engineering design criteria, such as hydrophile/lipophile balance (HLB), or field conditions, such as salinity. All surfactants tested showed efficient surface tension reduction and minimal effect of salinity on surface tension. Critical micelle concentrations, however, decreased with increasing salinity, and the effect was more pronounced for surfactants with a greater HLB number. Further candidate differentiation for the optimal surfactant package was achieved by testing adsorption on shale minerals. The validity of the approach was confirmed by testing cleanup from sand and shale matrices with final product candidates.
Formation Damage Versus Chemical Performance - Important Aspects for Upscaling Scale Inhibitor Squeeze Core Floods for Carbonate Systems
Authors: Mokogwu Ike , Wilson Sam , Graham Gordon. M.
Published: January 2018

Core flood tests are regarded as critical to qualification and optimization of scale inhibitors (SIs) deployed in "squeeze" mode, to assess both formation damage and chemical performance. However, the different test protocols commonly adopted can have significant impact on the outcome of both these aspects. Generally, SI core flood tests are designed to obtain both pieces of information from a single flood, often compromising the optimal testing of either or leading to chemical performance aspects being favoured over formation damage orvice versa.

Recent reports have illustrated how differences in test protocols can impact chemical performance results for clastic sandstones; the work presented in this current paper examines similar challenges in tight carbonate systems, such as those exhibiting both matrix and fracture flow. It demonstrates the importance of conducting core flood tests under representative conditions for these more reactive substrates in order to qualify chemicals appropriatelysuch that upscaling to the field case can be accurately achieved.

A suite of core flood tests were conducted on outcropcarbonate cores under matrix- and fracture-dominated flow conditions (simulating both macro and micro fractures), which allowed examination of chemical behaviour under different application conditions, thus highlighting differences in chemical-retention properties and associated treatment lifetimes as well as in formation damage assessment. This paper examines results from fractured carbonate core tests, which were designed to examine SI interaction and retention where chemical transport is dominated by diffusion, and compares these withsystems where transport is dominated by advective flow in the rock matrix. The overall aim was to examine the impact that core test design can have on the results observed and to discuss the consequences of different test approaches for chemical qualification. In summary, results show that different fracture apertures and flow conditions (matrix versus fracture flow) result in significant differences in formation damage and chemical retention, illustrating the importance of correctly replicating near wellbore conditions when designing such tests.
Sand Production Caused by Water Hammer Events: Implications for Shut-In Protocols and Design of Water Injection Wells
Authors: Wang Haotian , Hwang Jongsoo , Mukul M. Sharma
Published: January 2018

A pressure pulse, known as a water hammer, can occur immediately after water injection wells are shut-in for emergency or operational reasons. Large pressure pulses may cause wellbore integrity problems such as sand-face failure and sand production. We propose a new workflow to simulate water hammer events, the resulting wellbore failure and sand production in water injectors. Based on the results of this workflow, recommendations are made for wellbore design and shut-in protocols for water injection wells.

The results presented in this paper, for the first time, allow us to quantitatively understand the role of well shut-downs and subsequent water hammer pressures on sand production. The failure of unconsolidated sands near the wellbore is affected by water hammer events, their amplitude, period, and attenuation. If a water hammer event occurs during shut-in of water injectors, the extent of the sand failure becomes larger and the failure zone continues to propagate along the stress concentration direction. The simulation results clearly show which parameters are important and suggest changes to well operations such as proper shut-in protocols that help to minimize the possibility of sand production. The results also suggest ways in which injectors can be designed to minimize the impact of water hammer events.
Use of Fluid Level Survey Data to Infer Near-Wellbore Conditions for Curing Lost Circulation Wells
Authors: Guo Boyun , Li J. , Cai Xiao , Zhang Xiaohui , Wang Gui
Published: January 2018

Lost circulation is commonly recognized as one of major drilling complications that cause low efficiency and a high cost in oil or gas well drilling. The current practice of mitigating lost circulation with lost circulation materials (LCM) is still empirical due to the lack of understanding of near-wellbore conditions. This work the first time uses pressure transient data analysis method to infer the near-wellbore conditions in lost circulation wells. The fluid level survey data can be converted to bottomhole pressure p data based on mud weight. Plot of numerical pressure derivatives data versus time data allows for identification of near-wellbore conditions and thus selection of the right type of LCM. Result of this study shows that a zero-slope trend in the plot of numerical dpdt data versus time t indicates a near wellbore condition of intersecting radial multiple fractures induced by heavy drilling fluids. Medium size LCM with a wide range of particle size distribution in a lighter drilling fluid are recommended for curring the well. A zero-slope trend in the plot of numerical tdpdt data versus time t indicates a wellbore that does not intersect any fracture. This suggests using fine size LCM with a narrow range of particle distribution in a lighter drilling fluid to cure the well. A zero-slope trend in the plot of numerical dpdt1/2 data versus time t implies a wellbore intersecting a singal fracture. This usually occurs in drilling naturally fractured carbonate reservoirs. Coarse size LCM with a wide range of particle size distribution are recommended for curring the well. A field case study illustrates that the result given by this investigation can be used for selecting LCM on the drilling site.
Scalar products and norm of Bethe vectors for integrable models based on $U_q(\widehat{\mathfrak{gl}}_{n})$
Authors: Hutsalyuk Arthur , Liashyk Andrii , Pakuliak Stanislav , Ragoucy Eric , Slavnov Nikita
Published: January 2018

We obtain recursion formulas for the Bethe vectors of models with
periodic boundary conditions solvable by the nested algebraic Bethe
ansatz and based on the quantum affine algebra
\uqgl{m}.
We also present a sum formula for their scalar products. This formula
describes the scalar product in terms of a sum over partitions of the
Bethe parameters, whose factors are characterized by two highest
coefficients. We provide different recursions for these highest
coefficients.

In addition, we show that when the Bethe vectors are on-shell, their
norm takes the form of a Gaudin determinant.
INDIGENOUS PEOPLES IN THE SACRED GEOGRAPHY OF ETHNIC TERRITORIES (CASES OF THE SHOR PEOPLE AND THE TOZHU-TUVANS)
Authors: Веденин Алексей , Vedenin Aleksei , Осипов Константин , Osipov Konstantin
Published: January 2018

Preserving the indigenous peoples’ traditional cultures is a problem of current special interest from research and practice perspectives. Indigenous peoples of the world were always largely affected by dominating societies and forced to transform their original cultures, way of life and identity. In this regard, surviving indigenous culture practices require a special support based on the scientifi understanding of their meanings from the point of view of sustainable preservation of ethno-cultural environments. Cult and sacred places, be they natural sites or human-made facilities, remain crucial but quite vulnerable cultural elements of indigenous ethnic groups. They are important spatial objects which preserve indigenous peoples’ culture memory and different ethnic traditions connected with religion, spiritual culture and mythology. This paper summarizes main results of an interdisciplinary research of cult and sacred places used by the Shor people in the Kemerovoregion and the Tozhu-Tuvans in TuvaRepublic(Russian Federation). During their 2015 – 2017 fi the authors identifi a lot of sacred places, revered by indigenous communities, and described them in terms of their signifi as elements of living indigenous cultures. The data obtained in the process of fi allowed the authors to map the sacred places, as well as the main risks and threats associated with them. The latter include: mining activities, infrastructural and tourism facilities, etc. The identifi threats lead both to the destruction of the sacred places as well to extinction of indigenous knowledge.
ECOLOGICAL ISSUES OF THE OPEN-AIR ECO-MUSEUMS IN THE TOM’ RIVER VALLEY
Authors: Кимеев Валерий , Kimeev V.
Published: January 2018

The paper features environmental problems of the protected natural landscape zones of the two ecomuseums – The Tazgol in Mountain Shoriya and the Tyulbersky Gorodok. Both the museums are located in the Kuzbass Tom’ River Valley (Pritomye) and function as independent municipal budgetary institutions. The research project included a number of actions aimed at creating engineering infrastructure, preservation and restoration of both the territory of the ecomuseums and the surrounding natural landscape. The paper reveals some issues that may interfere with these plans and the role of the local authorities, other organizations and local population in their implementation. It offers some solutions for these complex problems by joint efforts of museum staff, local municipal authorities, departments of culture, forest complex, ecology and natural resources of the Administration of the Kemerovo region and various local enterprises, such as the Kemerovo State University practice bases, the Shor National Park, travel companies, etc.).
PROSPECTS FOR DEVELOPMENT OF SACRAL TOURISM IN KEMEROVO REGION AND THE REPUBLIC OF TUVA
Authors: Чайкина Елизавета , Chaikina Elizaveta , Веденин Алексей , Vedenin Aleksey
Published: January 2018

The paper considers a number of issues linked with the possibilities for the development of sacral (or esoteric) tourism in the Kemerovo Region and the Republicof Tuvaas most promising areas from the point of view of tourist industry. The authors assess the sacral tourism development as a way to attract more domestic and foreign tourist into the regions and review their recreational resources as well. The paper shows the signifi of sacral tourism resources for indigenous communities in the Kemerovoregion and the Republicof Tuva. As one of main conclusions in this regard, the authors state that presence of cult objects and unique indigenous culture in the regions shape key conditions needed for sacral tourism development. The research includes the existing esoteric tourist routes operating within both regions: the analysis has revealed that the sacral tourism in the Republicof Tuvahas a higher level of development than that of the Kemerovoregion. The fi part of the paper offers a list of actions necessary for successful development of sacral tourism within the regions. The authors’ attention is mostly focused on the interaction between the tourism business representatives and the indigenous communities.
CONTENT OF PHOTOSYNTHETIC PIGMENTS IN URBAN WOOD SPECIES
Authors: Сарсацкая Анна , Sarsatskaya Anna
Published: January 2018

The study features the content of photosynthetic pigments in the leaves of Larix sibirica Ledeb, Tilia cordata Mill, Populus alba Ledeb x Populus sowietica piramidalis Jabl, Acer negundo Ledeb and Acer tataricum Ledeb in various types of urban green zones. It has been established that the pigment content is a species trait and correlatively depends on the growing conditions (remoteness from pollution sources and transport highways). In ecologically safe areas, high values of photosynthetic pigments in all species have been established, especially the indicators of the pigment amount and the ratio of chlorophyll p>
The study involves the structure and content of the green pigment of chlorophyll in healthy and damaged leaves. In gas-resistant plant species in an urban environment, the content of a-chlorophyll and the sum of the green pigments are several times higher than in the leaves of medium-resistant species. The authors point out a change in the content of photosynthetic pigments from the concentration of acid gases in the environment and the rate of their absorption.
Recovery of phenolic compounds from multi-component solution by a synthesized activated carbon using resorcinol and formaldehyde
Authors: Madureira Joana , Melo Rita , Verde Sandra Cabo , Matos Inês , Bernardo Maria , Noronha João P. , Margaça Fernanda M. A. , Fonseca Isabel M.
Published: January 2018

The adsorption of four phenolic compounds (gallic acid, protocatechuic acid, vanillic acid and syringic acid) is investigated using a synthesized mesoporous carbon on both single and multi-component synthetic solutions. Some correlation of the adsorption capacity of the carbon and the nature of adsorbate could be made, except for gallic acid whose concentration decrease seems to be not exclusively due to adsorption but also to polymerization reaction. In the multi-component mixture, negative effects in the adsorption capacity are observed probably due to competition for the active centers of the adsorbent surface. In desorption studies, ethanol presents better performance than water and acetonitrile. Vanillic acid is the compound with the higher adsorption and interestingly it is then possible to desorb a relatively high amount of it from the adsorbent, which may represent a possibility for a selective recovery of vanillic acid. These results present a potential way to treat the wastewater from the cork industry.
The Degree of Subjective Complaints of Students Practice in Mechanical Technology Laboratories
Authors: Widana I Ketut
Published: January 2018

The working practice of the engineering students is part of the learning process that is irreducible and indispensable. The composition of  lecturing between theoretical and practical one is 40% to 60%. With this condition, the students spend more time at the laboratory. Generally, the students perform in the laboratory work by standing position. The design of research is observational cross-sectional. The method applied is observation, interview and measuring. The subjects of research are practicing students amounting to 21 students. Referring to the analysis of statistical test or Wilcoxon signed ranks test, the difference of effect of work position is significant, namely p < 0.05 towards musculoskeletal disorders (MSDs) before and after working. The quantity of the average complaint after working is score 44.62 ± 9.47. The result of Wilcoxon signed rank test shows that there is significant different effects of standing work position, namely p < 0.05 towards fatigue generally before and after working. The degree of the working pulse is on the average of 110.78  ± 17.80 bpm (beats per minutes) which can be categorized into the medium workload. Using paired t-test, the result is p < 0.05.
Integration of strategy experiential learning in e-module of electronic records management
Authors: Sutirman S. , Muhyadi M. , Surjono Herman Dwi
Published: January 2018

This study aims to determine the effectiveness of e-module of electronic records management integrated with experiential learning strategies to improve student achievement in the domain of cognitive, psychomotor, and affective. This study is a research and development. Model research and development used is Web-Based Instructional Design (WBID) developed by Davidson-Shivers and Rasmussen. The steps of research and development carried out by analysis, evaluation planning, concurrent design, implementation, and a summative evaluation. The approach used in this study consisted of qualitative and quantitative approaches. Collecting data used the Delphi technique, observation, documentation studies and tests. Research data analysis used qualitative analysis and quantitative analysis. Testing the effectiveness of the product used a quasi-experimental research design pretest-posttest non-equivalent control group. The results showed that the e-module of electronic records management integrated with experiential learning strategies can improve student achievement in the domain of cognitive, psychomotor, and affective.
Partnership model of vocational education with the business sector in civil engineering expertise program of Vocational Secondary Schools
Authors: Sandika I Kadek Budi , Slamet Slamet , Usman Husaini
Published: January 2018

This study aims to: (1) develop a partnership model of vocational education with business sectors in civil engineering expertise program of vocational secondary schools in Bali and (2)testing the effectiveness and efficiency of partnership model developed. The study used the design and development model of Richey & Klein (2009), which consists of three main phases, namely the phase of model development, model validation, and model testing. The phase of model development used the qualitative approach, through literature review, observation and interview. Expert review techniques were used in the model validation phase. The model testing used pre-experimental design with one-shot case study. The study found that the partnership model of vocational education with the business sector in civil engineering expertise program of vocational secondary schools in Bali involves several components, such as key stakeholders, the underlying principle of partnership, orientation/common goal, the management of educational resources (teachers and facilities), curriculum development, implementation of learning/training and work practices, competency test of graduates, distribution of learning outcomes/output, as well as monitoring, evaluation and feedback of partnership program. Experimental results show that the partnership model developed has met all of the criteria (effective, practical and efficient).
The accuracy aspects of publications of the Directorate of Vocational High School Development in promoting the existence of the secondary vocational education through mass media
Authors: Hadi Samsul , Suyanto Suyanto , Slamet Slamet
Published: January 2018

This study is an evaluation research aimed at examining the accuracy of substances, media, and publication schedules on the publications conducted by the Directorate of Vocational High School Development. The purposes of this study are: (1) to get information about the strength and weakness of the publication contexts which has become the basis of deciding the substances, media and publication schedule through mass media in order to get the publication effective and efficient to reach every level of society; (2) to get detail information about the accuracy of the using of substances, media and audiences’ habits in the implementation phase of the publication programs of the Directorate of Vocational High School Development through mass media. This research involved vocational high school communities as the samples, including the students, teachers and parents based on the stratified-cluster sampling technique. Meanwhile, the data analysis technique used was the descriptive statistic technique. In general, the result of this research shows that the substances of the publication are appropriate to public’s expectation, while the use of mass media and its publication schedule are not yet fully appropriate to achieve accuracy.
Developing quality evaluation instrument for Islamic Senior High School
Authors: Shodiq Muh , Suyata S. , Wibawa Sutrisna
Published: January 2018

This research aims to develop concept of the quality of education in Islamic Senior High School and know the validity and reliability of the factors that affect the development of quality indicators in Islamic Senior High School. Development of the procedures in this research included a needs analysis, product development, product test, and implementation/ dissemination. A sample of this research was Islamic Senior High School 1 Surakarta and Islamic Senior High School 1 Purwodadi, which were determined by a purposive random sampling. Data analysis techniques used was Confirmatory Factor Analysis (CFA), Lisrel version 8.54, and descriptive qualitative analysis. The results of the study showed that the development of quality indicator for Islamic Senior High School includes six criteria namely, the role of school principals, management of Islamic Senior High School, educators and Staffs, Students, facilities and infrastructures and the role of the community. It has met the indicators fit models, the Chi-Square value is 152.07, p > 0.05, and RMSEA is 0.068. The advantages of this Islamic Senior High School Quality Evaluation Instrument are namely comprehensive holistic approach, easy, not depending on the specific lessons conducted by educators. It can be used to map the various aspects of the education in Islamic school that need to be repaired; it is open to further developed) Islamic school quality evaluation instrument can be used as a school self-evaluation; it can be used effectively by schools without interrupting the learning process; it supports school accreditation and quality guarantee, and it is also independent.
Evaluasi proses bimbingan skripsi mahasiswa Universitas Negeri Yogyakarta berdasar perspektif pembelajaran orang dewasa
Authors: Sugito Sugito , Soenarto Sunaryo , Tohani Entoh
Published: January 2018

Dalam menghadapi tantangan dan permasalahan abad kedua puluh satu ini, pendidikan tinggi memiliki peran yang sangat strategis. Mata kuliah Skripsi dapat berperan untuk mengembangkan kemampuan guna menghadapi tantangan dan masalah yang dihadapi. Penelitian ini bertujuan untuk mengevaluasi proses pembimbingan skripsi dari perspektif teori pembelajaran orang dewasa, hambatan dan upaya yang dilakukan mahasiswa dan dosen dalam proses penulisan skripsi mahasiswa Universitas Negeri Yogyakarta (UNY). Penelitian ini dilakukan dengan menggunakan pendekatan kuantitatif. Sebagai sampel adalah mahasiswa yang sudah menyelesaikan penulisan skripsi, dan dosen pembimbing. Keduanya diambil secara purposif. Jumlah responden adalah 190 orang mahasiswa dan 53 orang dosen. Data dikumpulkan dengan menggunakan angket. Data yang diperoleh melalui angket dianalisis secara deskriptif kuantitatif dengan teknik persentase. Hasil penelitian menunjukkan: (1) proses pembimbingan cenderung sudah menggunakan prinsip pembelajaran orang dewasa, yang lebih menekankan pada proses belajar mandiri; (2) hambatan yang dihadapi meliputi substansi dan metode penelitian, kemampuan bahasa asing, psikologis, dan kelengkapan sumber referensi; dan (3) upaya yang dilakukan untuk mengatasi hambatan meliputi peningkatan motivasi diri, berusaha sendiri dan pemberian kesempataan dosen pada mahasiswa untuk menyampaikan permasalahan yang dihadapi. EVALUATION OF UNDERGRADUATE THESIS MENTORING PROCESS IN UNIVERSITAS NEGERI YOGYAKARTA BASED ON ADULT LEARNING PERSPECTIVEAbstractIn facing the twenty-first century’s challenges and problems, higher education plays a very strategic role. Undergraduate thesis can contribute in developing the ability to address the challenges and problems. This study aims at evaluating the process of mentoring through the lens of adult learning theory by looking at the students’ and lecturers’ obstacles and efforts in the process of thesis writing among college students. This research was conducted using a quantitative approach with a purposively selected sample of 190 students who have completed their thesis writing, and 53 supervisors. The data were collected by questionnaire and analyzed descriptively in percentages. The results show that: (1) the process of mentoring tends to have used the principle of adult learning with more emphasis on self-directed learning; (2) the encountered obstacles include research substance and methods, foreign language abilities, psychological factors, and reference sources; and (3) some activities done to overcome the obstacles include improving self-motivation, self-effort, and providing opportunities for the students to consult their problems to the lecturer.
जैन दर्शन के दार्शनिक स्वरूप का एक अध्ययन
Authors: काण्डपाल ममता
Published: January 2018

जैन दर्शन प्राचीन दर्शनों में से एक है। जैन शब्द की उत्पत्ति ‘जिन‘ शब्द से मानी जाती है, जिसका अर्थ है विजेता। विजेता से तात्पर्य यह है कि, व्यक्ति द्वारा अपनी कामनाओं एंव मन को जीत लिया हो अर्थात विजय प्राप्त कर ली हो। और वह व्यक्ति जन्म-मृत्यु के क्रम से मुक्त हो गया हो। ऐसा माना जाता है कि जैन दर्शन लगभग छठी शताब्दी ई0 पू0 भगवान महावीर स्वामी के द्वारा पुनराव्रतित हुआ। जिन्हें ‘वर्धमान‘ ‘वीर‘ ‘अतिवीर‘ और सन्मति भी कहा जाता है। जैन दर्शन की उत्पत्ति का कारण वेदों की प्रमाणिकता एवं कर्मकाण्ड की अधिकता को माना जाता है। जहां एक ओर वेदों में ईश्वर को सत्ता का सर्वोच्च स्वामी माना गया है वहीं दूसरी ओर जैन दर्शन में अहिंसा को महत्वपूर्ण मानते हुए तीर्थंकरों को ही भगवान का स्थान दिया गया है। तथा तीर्थंकरों द्वारा दिये गये उपदेशों का पालन करना ही नियमसंगत माना गया है। इन्हीं जिनों के उपदेशें को मानने वाले जैन तथा उनके धर्म के सिद्वान्त जैन दर्शन के रूप में प्रसिद्व हुए। जैन दर्शन मानवीय मूल्यों पर आधारित दर्शन है। जो नैतिकता को प्रमाणिकता के आधार पर अपनाने पर बल देता है। जैन दर्शन की मान्यता के अनुसार जीव और कर्मों में से जब जीव सम्पूर्णतः अपनी आत्मा को कर्मों से मुक्त कर देता है तो वह स्वयं भगवान बन जाता है। और इसके साथ ही व्यक्ति को जैन दर्शन में विदित मौलिक मान्यताओं के अनुसार पुरूषार्थ करना पड़ता है, जिसे जैन दर्शन में ‘सम्यक् पुरूषार्थ‘ कहते हैं। नास्तिक दर्शनों में सबसे प्रमुख दर्शन ‘जैन दर्शन‘ को माना गया है। जैन दर्शन को ‘आर्हत दर्शन‘ के नाम से भी जाना जाता है। जैन दर्शन के अन्र्तगत चैबीस तीर्थंकर हुए जिनमें ऋषभदेव को प्रथम तथा महावीर स्वामी को चैबीसवां तीर्थंकर माना जाता है।
DEVELOPING EFFECTIVE COMMUNICATION SKILLS IN STUDENTS
Authors: Khambayat Shubhangi R.
Published: January 2018

Communication plays an important role in our everyday life. Good communication is therefore vital for effective functioning in the work environment. There is overwhelming evidence that proficiency in communication skills can make any individual more versatile, and thus more competitive in the workplace. Communication is a mode, which helps every one of us to transfer our messages, thoughts, feelings, thinking, imagination and ideas. This is a function pre-installed or naturally exists in every human being to show his/her existence by language. Thus, every student certainly needs effective and impressive communication skills. As a result, there are growing expectations from educational institutions to cater the needs of the workplace. One of the major issues we need to address includes, what measures should be taken to make the students work-ready‘? In this perspective, Teachers have an important role to play in enhancing the communication skills among students. Considering the diversity in the classroom, there is a growing demand to use innovative methods and strategies, including framing good quality instructional resources to enhance various sub-skills of communication among our students.
An attempt is made in this article, to contribute to the ongoing discussion in the changing contexts of communication skills from the perspective of preparing our students to face future challenges. The paper shares ideas on enhancing the four core elements of Communication skills, including listening, speaking, reading and writing skills in order to get an edge up in the competition for work and employment.
ANALISIS SPASIAL KEJADIAN PENYAKIT KUSTA DI KABUPATEN BLORA PROVINSI JAWA TENGAH
Authors: Kurniawan Jati , Radiono Sunardi , Kusnanto Hari
Published: January 2018

Purpose: The aim is to discover the existence of leprosy agglomeration and factors causing leprosy. Method: This epidemiological study was held in district of Blora. Data was analyzed using individual approach and spatial analysis. Results: There are agglomeration of leprosy cases at coordinates 7.215035 S and 111.535428 E radius of 10.54 km. Variables related to leprosy incidence are economic status and the distance of reservoir. The economic status obtained coefficient value -0.882169, error standard 0.372429, t-statistic -2.36869 and p-value 0.01881. While the distance of distance of reservoir obtained coefficient value 0.00344507, standard error 0.000965419, t-statistic 3.56847 and p-value 0.00045.Conclusion: There is agglomeration of leprosy patients. There is a correlation between the variable of economic status and the distance of reservoir with the leprosy incidence. Health agencies and related sectors need to provide informal skills training to leprosy patients for increasing family income.
Adolescent pregnant women experiences in three primary health care centers of Yogyakarta: the need of friendly and sensitive support care
Authors: Ardhia Dara , Wahyuni Budi , Nisman Wenny Artanty
Published: January 2018

Purpose: Explore the meaning of adolescent’s experience and social support needs from health staff in pregnancy.Method: This research was a qualitative research with phenomenology. The study was conducted in three catchment areas of Puskesmas Jetis, Gedongtengen and Umbulharjo 1 from 6 May to 7 July 2017. The selection of participants using the technique of maximal variation and the number of participants adjusted to the varied place of study and the variation of participants and the number of participants was 6. The research data was collected by using in-depth interview technique with semi-structured interview guide. The data were analyzed with Collaizi technique analysis.Results: There are 5 themes in this study that is, the experience of adolescents at the beginning of their pregnancies, differences in the reasons adolescent maintain their pregnancies, the form of support that adolescent have gained during pregnancy, adolescent perspectives on the behavior of health staff during accompanying pregnancy and social support needs of adolescent pregnancy from health staff .Conclusion: Adolescent acceptance of pregnancy occurs as pregnancy progresses, support from optimal health staff increases teen motivation to maintain and run pregnancy well and informational support from health staff is a key requirement for teenage pregnancy.
Modelos teóricos para el estudio métrico de la información documental
Authors: Lascurain María Luisa
Published: January 2018

Modelos teóricos para el estudio métrico de la información documental
Hacia la educación a distancia en la bibliotecología: algunas propuestas en México y en España
Authors: MARCOS RECIO JUAN C.
Published: January 2018

EL COMPROMISO DOCENTE DE UN GOBIERNO SE HACE REAL CUANDO LOS RESULTADOS DEL SISTEMA EDUCATIVO ALCANZAN GRADOS IMPORTANTES DE CALIDAD Y EFICIENCIA EN LA SOCIEDAD. PARA ELLO SE REQUIERE UN CONOCIMIENTO PREVIO DE LOS COMPONENTES SOCIALES, ECONÓMICOS Y, SOBRE TODO, EDUCATIVOS EN LOS TRES NIVELES PRINCIPALES: INSTITUCIÓN EDUCATIVA, DOCENTES Y ALUMNOS. SE EVALÚAN LOS ESTUDIOS ACTUALES Y SE PRESENTA UNA EVOLUCIÓN HACIA LA EDUCACIÓN A DISTANCIA DETERMINANDO SUS VENTAJAS E INCONVENIENTES. EL PUNTO DE PARTIDA ES LA SITUACIÓN ACTUAL DE LOS RECURSOS UTILIZADOS EN LA EDUCACIÓN MEXICANA EN BIBLIOTECOLOGÍA, TOMANDO COMO REFERENCIA ALGUNAS UNIVERSIDADES ESPAÑOLAS QUE TRABAJAN ESTAS HERRAMIENTAS. SE TRATA DE CURSOS, ASIGNATURAS O PARTE DE ELLAS EN MÉTODOS A DISTANCIA CON EL FIN DE CONOCER CUÁLES SON LAS APLICACIONES TECNOLÓGICAS CON LAS QUE CUENTA LA BIBLIOTECOLOGÍA.
Categorización de los conceptos en el análisis de contenido: su señalamiento desde la Retórica clásica hasta los Topic Maps
Authors: MOREIRO GONZÁLEZ JOSÉ A. , MORATO LARA JORGE , SÁNCHEZ CUADRADO SONIA , RODRÍGUEZ BARQUIN BEATRIZ AINHIZE
Published: January 2018

ANÁLISIS DE LAS TEORÍAS PROVENIENTES DE LA RETÓRICA CLÁSICA Y DE LA LINGÜÍSTICA DEL TEXTO SOBRE LAS QUE SE FIJAN LOS PROCEDIMIENTOS A SEGUIR DURANTE EL PROCESO DECONSTRUCTIVO-RECONSTRUCTIVO DEL ANÁLISIS DE CONTENIDO DE LOS DOCUMENTOS. SE PLANTEA LA SELECCIÓN DE LAS IDEAS PRINCIPALES DE LOS DISCURSOS SIGUIENDO LAS REGLAS GENERALES DEL CUESTIONAR, PROCESO HERMENÉUTICO AL QUE DEBE ESTAR SOMETIDO TODO HECHO COMUNICATIVO Y QUE TUVO EN RAMÓN LLULL LAS PROPUESTAS MÁS ORIGINALES. ASIMISMO SE DEFIENDE LA IMPORTANCIA QUE TIENE LA ORGANIZACIÓN SUPERESTRUCTURAL PARA LA LECTURA Y REPRESENTACIÓN DOCUMENTAL, Y SE PROPONEN VARIOS NIVELES Y PASOS A SEGUIR PARA HACER UNA CONVENIENTE DESCRIPCIÓN DEL CONTENIDO MACROESTRUCTURAL. LA ACTUACIÓN DEL ANALISTA SOBRE LOS DOCUMENTOS DEBE HACERSE DE ACUERDO CON LA PROPUESTA DE LLULL, EN LA ACTUALIDAD ENMARCADA BAJO EL PARADIGMA DE LASWELL (WH QUESTIONS) Y RECOGIDA POR LAS NORMAS INTERNACIONALES QUE MARCAN EL PROCESO DE ANÁLISIS. SE CONSIDERA TAMBIÉN LA INFLUENCIA QUE ESTAS TEORÍAS HAN TENIDO SOBRE LA ESTRUCTURA DE LOS TESAUROS Y LA FILOSOFÍA DE ACTUACIÓN DE LOS TOPIC MAPS.
Edición y subversión. Literatura clandestina en el Antiguo Régimen
Authors: ALFARO LÓPEZ HÉCTOR GUILLERMO
Published: January 2018

Edición y subversión. Literatura clandestina en el Antiguo Régimen
El último lector
Authors: ALFARO LÓPEZ HÉCTOR GUILLERMO
Published: January 2018

El último lector
Visual cues enhance user performance in virtual environments
Authors: Hwang Yongsuk , Shin Donghee
Published: January 2018

We examined the effects of visual cueing in an effort to identify the optimal way to present information in a 3-dimensional (3D) virtual environment. To strategically compensate for the lack of permanency, we combined dynamic and static visualizations into 1 medium by adding transparent
static images (visual cueing) to an animation. A between-subjects experiment (N = 100) was conducted to examine the effects of visual cueing on cognitive load and learning outcomes. Results showed that combining dynamic and static visualizations was beneficial for reducing cognitive
load, although it did not improve learning outcomes. On the basis of our findings, we suggest a design strategy for improving the effectiveness of 3D instructional animations that is broadly applicable to numerous learning contexts, such as virtual or augmented reality.